Merge "Fix the compiler error for the ternary operator, caused by Eigen rebase."
diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index 8f2dee1..14eff03 100644
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -1284,7 +1284,7 @@
             fflush(stdout);
             int outFd = STDOUT_FILENO;
             if (g_outputFile) {
-                outFd = open(g_outputFile, O_WRONLY | O_CREAT, 0644);
+                outFd = open(g_outputFile, O_WRONLY | O_CREAT | O_TRUNC, 0644);
             }
             if (outFd == -1) {
                 printf("Failed to open '%s', err=%d", g_outputFile, errno);
diff --git a/cmds/bugreportz/readme.md b/cmds/bugreportz/readme.md
index 2697f09..eb0d898 100644
--- a/cmds/bugreportz/readme.md
+++ b/cmds/bugreportz/readme.md
@@ -17,3 +17,4 @@
 
 - `OK:<path_to_bugreport_file>` in case of success.
 - `FAIL:<error message>` in case of failure.
+
diff --git a/cmds/dumpstate/dumpstate.cpp b/cmds/dumpstate/dumpstate.cpp
index 349bbed..1cf00f5 100644
--- a/cmds/dumpstate/dumpstate.cpp
+++ b/cmds/dumpstate/dumpstate.cpp
@@ -960,7 +960,7 @@
                {"ps", "-A", "-T", "-Z", "-O", "pri,nice,rtprio,sched,pcy"});
     RunCommand("LIBRANK", {"librank"}, CommandOptions::AS_ROOT);
 
-    RunCommand("HARDWARE HALS", {"lshal"});
+    RunCommand("HARDWARE HALS", {"lshal"}, CommandOptions::AS_ROOT);
 
     RunCommand("PRINTENV", {"printenv"});
     RunCommand("NETSTAT", {"netstat", "-nW"});
@@ -1059,7 +1059,7 @@
 #endif
     DumpFile("INTERRUPTS (2)", "/proc/interrupts");
 
-    print_properties();
+    RunCommand("SYSTEM PROPERTIES", {"getprop"});
 
     RunCommand("VOLD DUMP", {"vdc", "dump"});
     RunCommand("SECURE CONTAINERS", {"vdc", "asec", "list"});
@@ -1128,7 +1128,7 @@
     printf("== Running Application Activities\n");
     printf("========================================================\n");
 
-    RunDumpsys("APP ACTIVITIES", {"activity", "all"});
+    RunDumpsys("APP ACTIVITIES", {"activity", "-v", "all"});
 
     printf("========================================================\n");
     printf("== Running Application Services\n");
@@ -1161,7 +1161,7 @@
     printf("== Board\n");
     printf("========================================================\n");
 
-    ::android::sp<IDumpstateDevice> dumpstate_device(IDumpstateDevice::getService("dumpstate"));
+    ::android::sp<IDumpstateDevice> dumpstate_device(IDumpstateDevice::getService());
     if (dumpstate_device == nullptr) {
         MYLOGE("No IDumpstateDevice implementation\n");
         return;
diff --git a/cmds/dumpstate/dumpstate.h b/cmds/dumpstate/dumpstate.h
index d988429..7fcb980 100644
--- a/cmds/dumpstate/dumpstate.h
+++ b/cmds/dumpstate/dumpstate.h
@@ -363,9 +363,6 @@
 int dump_files(const std::string& title, const char* dir, bool (*skip)(const char* path),
                int (*dump_from_fd)(const char* title, const char* path, int fd));
 
-/* prints all the system properties */
-void print_properties();
-
 /** opens a socket and returns its file descriptor */
 int open_socket(const char *service);
 
diff --git a/cmds/dumpstate/utils.cpp b/cmds/dumpstate/utils.cpp
index baa6458..4655d33 100644
--- a/cmds/dumpstate/utils.cpp
+++ b/cmds/dumpstate/utils.cpp
@@ -710,40 +710,6 @@
     RunCommand(title, dumpsys, options);
 }
 
-size_t num_props = 0;
-static char* props[2000];
-
-static void print_prop(const char *key, const char *name, void *user) {
-    (void) user;
-    if (num_props < sizeof(props) / sizeof(props[0])) {
-        char buf[PROPERTY_KEY_MAX + PROPERTY_VALUE_MAX + 10];
-        snprintf(buf, sizeof(buf), "[%s]: [%s]\n", key, name);
-        props[num_props++] = strdup(buf);
-    }
-}
-
-static int compare_prop(const void *a, const void *b) {
-    return strcmp(*(char * const *) a, *(char * const *) b);
-}
-
-/* prints all the system properties */
-void print_properties() {
-    const char* title = "SYSTEM PROPERTIES";
-    DurationReporter duration_reporter(title);
-    printf("------ %s ------\n", title);
-    if (PropertiesHelper::IsDryRun()) return;
-    size_t i;
-    num_props = 0;
-    property_list(print_prop, NULL);
-    qsort(&props, num_props, sizeof(props[0]), compare_prop);
-
-    for (i = 0; i < num_props; ++i) {
-        fputs(props[i], stdout);
-        free(props[i]);
-    }
-    printf("\n");
-}
-
 int open_socket(const char *service) {
     int s = android_get_control_socket(service);
     if (s < 0) {
diff --git a/cmds/lshal/Android.bp b/cmds/lshal/Android.bp
index 5aab35a..39e0ba3 100644
--- a/cmds/lshal/Android.bp
+++ b/cmds/lshal/Android.bp
@@ -18,8 +18,10 @@
         "libbase",
         "libutils",
         "libhidlbase",
-        "android.hidl.manager@1.0",
         "libhidltransport",
+        "libhidl-gen-utils",
+        "libvintf",
+        "android.hidl.manager@1.0",
     ],
     srcs: [
         "Lshal.cpp"
diff --git a/cmds/lshal/Lshal.cpp b/cmds/lshal/Lshal.cpp
index 6fd9b21..9e60461 100644
--- a/cmds/lshal/Lshal.cpp
+++ b/cmds/lshal/Lshal.cpp
@@ -28,6 +28,9 @@
 #include <android-base/parseint.h>
 #include <android/hidl/manager/1.0/IServiceManager.h>
 #include <hidl/ServiceManagement.h>
+#include <hidl-util/FQName.h>
+#include <vintf/HalManifest.h>
+#include <vintf/parse_xml.h>
 
 #include "Timeout.h"
 
@@ -58,12 +61,13 @@
     return os.str();
 }
 
-static std::pair<hidl_string, hidl_string> split(const hidl_string &s, char c) {
+template<typename String>
+static std::pair<String, String> splitFirst(const String &s, char c) {
     const char *pos = strchr(s.c_str(), c);
     if (pos == nullptr) {
         return {s, {}};
     }
-    return {hidl_string(s.c_str(), pos - s.c_str()), hidl_string(pos + 1)};
+    return {String(s.c_str(), pos - s.c_str()), String(pos + 1)};
 }
 
 static std::vector<std::string> split(const std::string &s, char c) {
@@ -81,6 +85,14 @@
     return components;
 }
 
+static void replaceAll(std::string *s, char from, char to) {
+    for (size_t i = 0; i < s->size(); ++i) {
+        if (s->at(i) == from) {
+            s->at(i) = to;
+        }
+    }
+}
+
 std::string getCmdline(pid_t pid) {
     std::ifstream ifs("/proc/" + std::to_string(pid) + "/cmdline");
     std::string cmdline;
@@ -147,22 +159,37 @@
     return true;
 }
 
+void Lshal::forEachTable(const std::function<void(Table &)> &f) {
+    for (const Table &table : {mServicesTable, mPassthroughRefTable, mImplementationsTable}) {
+        f(const_cast<Table &>(table));
+    }
+}
+void Lshal::forEachTable(const std::function<void(const Table &)> &f) const {
+    for (const Table &table : {mServicesTable, mPassthroughRefTable, mImplementationsTable}) {
+        f(table);
+    }
+}
+
 void Lshal::postprocess() {
-    if (mSortColumn) {
-        std::sort(mTable.begin(), mTable.end(), mSortColumn);
-    }
-    for (TableEntry &entry : mTable) {
-        entry.serverCmdline = getCmdline(entry.serverPid);
-        removeDeadProcesses(&entry.clientPids);
-        for (auto pid : entry.clientPids) {
-            entry.clientCmdlines.push_back(this->getCmdline(pid));
+    forEachTable([this](Table &table) {
+        if (mSortColumn) {
+            std::sort(table.begin(), table.end(), mSortColumn);
         }
-    }
+        for (TableEntry &entry : table) {
+            entry.serverCmdline = getCmdline(entry.serverPid);
+            removeDeadProcesses(&entry.clientPids);
+            for (auto pid : entry.clientPids) {
+                entry.clientCmdlines.push_back(this->getCmdline(pid));
+            }
+        }
+    });
 }
 
 void Lshal::printLine(
         const std::string &interfaceName,
-        const std::string &transport, const std::string &server,
+        const std::string &transport,
+        const std::string &arch,
+        const std::string &server,
         const std::string &serverCmdline,
         const std::string &address, const std::string &clients,
         const std::string &clientCmdlines) const {
@@ -170,6 +197,8 @@
         mOut << std::setw(80) << interfaceName << "\t";
     if (mSelectedColumns & ENABLE_TRANSPORT)
         mOut << std::setw(10) << transport << "\t";
+    if (mSelectedColumns & ENABLE_ARCH)
+        mOut << std::setw(5) << arch << "\t";
     if (mSelectedColumns & ENABLE_SERVER_PID) {
         if (mEnableCmdlines) {
             mOut << std::setw(15) << serverCmdline << "\t";
@@ -189,38 +218,192 @@
     mOut << std::endl;
 }
 
-void Lshal::dump() const {
-    mOut << "All services:" << std::endl;
-    mOut << std::left;
-    printLine("Interface", "Transport", "Server", "Server CMD", "PTR", "Clients", "Clients CMD");
-    for (const auto &entry : mTable) {
-        printLine(entry.interfaceName,
-                entry.transport,
-                entry.serverPid == NO_PID ? "N/A" : std::to_string(entry.serverPid),
-                entry.serverCmdline,
-                entry.serverObjectAddress == NO_PTR ? "N/A" : toHexString(entry.serverObjectAddress),
-                join(entry.clientPids, " "),
-                join(entry.clientCmdlines, ";"));
+void Lshal::dumpVintf() const {
+    vintf::HalManifest manifest;
+    forEachTable([this, &manifest] (const Table &table) {
+        for (const TableEntry &entry : table) {
+
+            std::string fqInstanceName = entry.interfaceName;
+
+            if (&table == &mImplementationsTable) {
+                // Quick hack to work around *'s
+                replaceAll(&fqInstanceName, '*', 'D');
+            }
+            auto splittedFqInstanceName = splitFirst(fqInstanceName, '/');
+            FQName fqName(splittedFqInstanceName.first);
+            if (!fqName.isValid()) {
+                mErr << "Warning: '" << splittedFqInstanceName.first
+                     << "' is not a valid FQName." << std::endl;
+                continue;
+            }
+            // Strip out system libs.
+            // TODO(b/34772739): might want to add other framework HAL packages
+            if (fqName.inPackage("android.hidl")) {
+                continue;
+            }
+            std::string interfaceName =
+                    &table == &mImplementationsTable ? "" : fqName.name();
+            std::string instanceName =
+                    &table == &mImplementationsTable ? "" : splittedFqInstanceName.second;
+
+            vintf::Transport transport;
+            if (entry.transport == "hwbinder") {
+                transport = vintf::Transport::HWBINDER;
+            } else if (entry.transport == "passthrough") {
+                transport = vintf::Transport::PASSTHROUGH;
+            } else {
+                mErr << "Warning: '" << entry.transport << "' is not a valid transport." << std::endl;
+                continue;
+            }
+
+            vintf::ManifestHal *hal = manifest.getHal(fqName.package());
+            if (hal == nullptr) {
+                if (!manifest.add(vintf::ManifestHal{
+                    .format = vintf::HalFormat::HIDL,
+                    .name = fqName.package(),
+                    .impl = {.implLevel = vintf::ImplLevel::GENERIC, .impl = ""},
+                    .transport = transport
+                })) {
+                    mErr << "Warning: cannot add hal '" << fqInstanceName << "'" << std::endl;
+                    continue;
+                }
+                hal = manifest.getHal(fqName.package());
+            }
+            if (hal == nullptr) {
+                mErr << "Warning: cannot get hal '" << fqInstanceName
+                     << "' after adding it" << std::endl;
+                continue;
+            }
+            vintf::Version version{fqName.getPackageMajorVersion(), fqName.getPackageMinorVersion()};
+            if (std::find(hal->versions.begin(), hal->versions.end(), version) == hal->versions.end()) {
+                hal->versions.push_back(version);
+            }
+            if (&table != &mImplementationsTable) {
+                auto it = hal->interfaces.find(interfaceName);
+                if (it == hal->interfaces.end()) {
+                    hal->interfaces.insert({interfaceName, {interfaceName, {{instanceName}}}});
+                } else {
+                    it->second.instances.insert(instanceName);
+                }
+            }
+        }
+    });
+    mOut << vintf::gHalManifestConverter(manifest);
+}
+
+static const std::string &getArchString(Architecture arch) {
+    static const std::string sStr64 = "64";
+    static const std::string sStr32 = "32";
+    static const std::string sStrBoth = "32+64";
+    static const std::string sStrUnknown = "";
+    switch (arch) {
+        case ARCH64:
+            return sStr64;
+        case ARCH32:
+            return sStr32;
+        case ARCH_BOTH:
+            return sStrBoth;
+        case ARCH_UNKNOWN: // fall through
+        default:
+            return sStrUnknown;
     }
 }
 
-void Lshal::putEntry(TableEntry &&entry) {
-    mTable.push_back(std::forward<TableEntry>(entry));
+static Architecture fromBaseArchitecture(::android::hidl::base::V1_0::DebugInfo::Architecture a) {
+    switch (a) {
+        case ::android::hidl::base::V1_0::DebugInfo::Architecture::IS_64BIT:
+            return ARCH64;
+        case ::android::hidl::base::V1_0::DebugInfo::Architecture::IS_32BIT:
+            return ARCH32;
+        case ::android::hidl::base::V1_0::DebugInfo::Architecture::UNKNOWN: // fallthrough
+        default:
+            return ARCH_UNKNOWN;
+    }
+}
+
+void Lshal::dumpTable() {
+    mServicesTable.description =
+            "All binderized services (registered services through hwservicemanager)";
+    mPassthroughRefTable.description =
+            "All interfaces that getService() has ever return as a passthrough interface;\n"
+            "PIDs / processes shown below might be inaccurate because the process\n"
+            "might have relinquished the interface or might have died.\n"
+            "The Server / Server CMD column can be ignored.\n"
+            "The Clients / Clients CMD column shows all process that have ever dlopen'ed \n"
+            "the library and successfully fetched the passthrough implementation.";
+    mImplementationsTable.description =
+            "All available passthrough implementations (all -impl.so files)";
+    forEachTable([this] (const Table &table) {
+        mOut << table.description << std::endl;
+        mOut << std::left;
+        printLine("Interface", "Transport", "Arch", "Server", "Server CMD",
+                  "PTR", "Clients", "Clients CMD");
+        for (const auto &entry : table) {
+            printLine(entry.interfaceName,
+                    entry.transport,
+                    getArchString(entry.arch),
+                    entry.serverPid == NO_PID ? "N/A" : std::to_string(entry.serverPid),
+                    entry.serverCmdline,
+                    entry.serverObjectAddress == NO_PTR ? "N/A" : toHexString(entry.serverObjectAddress),
+                    join(entry.clientPids, " "),
+                    join(entry.clientCmdlines, ";"));
+        }
+        mOut << std::endl;
+    });
+
+}
+
+void Lshal::dump() {
+    if (mVintf) {
+        dumpVintf();
+        if (!!mFileOutput) {
+            mFileOutput.buf().close();
+            delete &mFileOutput.buf();
+            mFileOutput = nullptr;
+        }
+        mOut = std::cout;
+    } else {
+        dumpTable();
+    }
+}
+
+void Lshal::putEntry(TableEntrySource source, TableEntry &&entry) {
+    Table *table = nullptr;
+    switch (source) {
+        case HWSERVICEMANAGER_LIST :
+            table = &mServicesTable; break;
+        case PTSERVICEMANAGER_REG_CLIENT :
+            table = &mPassthroughRefTable; break;
+        case LIST_DLLIB :
+            table = &mImplementationsTable; break;
+        default:
+            mErr << "Error: Unknown source of entry " << source << std::endl;
+    }
+    if (table) {
+        table->entries.push_back(std::forward<TableEntry>(entry));
+    }
 }
 
 Status Lshal::fetchAllLibraries(const sp<IServiceManager> &manager) {
     using namespace ::android::hardware;
     using namespace ::android::hidl::manager::V1_0;
     using namespace ::android::hidl::base::V1_0;
-    auto ret = timeoutIPC(manager, &IServiceManager::list, [&] (const auto &fqInstanceNames) {
-        for (const auto &fqInstanceName : fqInstanceNames) {
-            putEntry({
-                .interfaceName = fqInstanceName,
+    auto ret = timeoutIPC(manager, &IServiceManager::debugDump, [&] (const auto &infos) {
+        std::map<std::string, TableEntry> entries;
+        for (const auto &info : infos) {
+            std::string interfaceName = std::string{info.interfaceName.c_str()} + "/" +
+                    std::string{info.instanceName.c_str()};
+            entries.emplace(interfaceName, TableEntry{
+                .interfaceName = interfaceName,
                 .transport = "passthrough",
                 .serverPid = NO_PID,
                 .serverObjectAddress = NO_PTR,
-                .clientPids = {}
-            });
+                .clientPids = {},
+                .arch = ARCH_UNKNOWN
+            }).first->second.arch |= fromBaseArchitecture(info.arch);
+        }
+        for (auto &&pair : entries) {
+            putEntry(LIST_DLLIB, std::move(pair.second));
         }
     });
     if (!ret.isOk()) {
@@ -233,18 +416,20 @@
 
 Status Lshal::fetchPassthrough(const sp<IServiceManager> &manager) {
     using namespace ::android::hardware;
+    using namespace ::android::hardware::details;
     using namespace ::android::hidl::manager::V1_0;
     using namespace ::android::hidl::base::V1_0;
     auto ret = timeoutIPC(manager, &IServiceManager::debugDump, [&] (const auto &infos) {
         for (const auto &info : infos) {
-            putEntry({
+            putEntry(PTSERVICEMANAGER_REG_CLIENT, {
                 .interfaceName =
                         std::string{info.interfaceName.c_str()} + "/" +
                         std::string{info.instanceName.c_str()},
                 .transport = "passthrough",
                 .serverPid = info.clientPids.size() == 1 ? info.clientPids[0] : NO_PID,
                 .serverObjectAddress = NO_PTR,
-                .clientPids = info.clientPids
+                .clientPids = info.clientPids,
+                .arch = fromBaseArchitecture(info.arch)
             });
         }
     });
@@ -262,79 +447,85 @@
     using namespace ::android::hidl::manager::V1_0;
     using namespace ::android::hidl::base::V1_0;
     const std::string mode = "hwbinder";
-    Status status = OK;
-    auto listRet = timeoutIPC(manager, &IServiceManager::list, [&] (const auto &fqInstanceNames) {
-        // server pid, .ptr value of binder object, child pids
-        std::map<std::string, DebugInfo> allDebugInfos;
-        std::map<pid_t, std::map<uint64_t, Pids>> allPids;
-        for (const auto &fqInstanceName : fqInstanceNames) {
-            const auto pair = split(fqInstanceName, '/');
-            const auto &serviceName = pair.first;
-            const auto &instanceName = pair.second;
-            auto getRet = timeoutIPC(manager, &IServiceManager::get, serviceName, instanceName);
-            if (!getRet.isOk()) {
-                mErr << "Warning: Skipping \"" << fqInstanceName << "\": "
-                     << "cannot be fetched from service manager:"
-                     << getRet.description() << std::endl;
-                status |= DUMP_BINDERIZED_ERROR;
-                continue;
-            }
-            sp<IBase> service = getRet;
-            if (service == nullptr) {
-                mErr << "Warning: Skipping \"" << fqInstanceName << "\": "
-                     << "cannot be fetched from service manager (null)";
-                status |= DUMP_BINDERIZED_ERROR;
-                continue;
-            }
-            auto debugRet = timeoutIPC(service, &IBase::getDebugInfo, [&] (const auto &debugInfo) {
-                allDebugInfos[fqInstanceName] = debugInfo;
-                if (debugInfo.pid >= 0) {
-                    allPids[static_cast<pid_t>(debugInfo.pid)].clear();
-                }
-            });
-            if (!debugRet.isOk()) {
-                mErr << "Warning: Skipping \"" << fqInstanceName << "\": "
-                     << "debugging information cannot be retrieved:"
-                     << debugRet.description() << std::endl;
-                status |= DUMP_BINDERIZED_ERROR;
-            }
-        }
-        for (auto &pair : allPids) {
-            pid_t serverPid = pair.first;
-            if (!getReferencedPids(serverPid, &allPids[serverPid])) {
-                mErr << "Warning: no information for PID " << serverPid
-                          << ", are you root?" << std::endl;
-                status |= DUMP_BINDERIZED_ERROR;
-            }
-        }
-        for (const auto &fqInstanceName : fqInstanceNames) {
-            auto it = allDebugInfos.find(fqInstanceName);
-            if (it == allDebugInfos.end()) {
-                putEntry({
-                    .interfaceName = fqInstanceName,
-                    .transport = mode,
-                    .serverPid = NO_PID,
-                    .serverObjectAddress = NO_PTR,
-                    .clientPids = {}
-                });
-                continue;
-            }
-            const DebugInfo &info = it->second;
-            putEntry({
-                .interfaceName = fqInstanceName,
-                .transport = mode,
-                .serverPid = info.pid,
-                .serverObjectAddress = info.ptr,
-                .clientPids = info.pid == NO_PID || info.ptr == NO_PTR
-                        ? Pids{} : allPids[info.pid][info.ptr]
-            });
-        }
 
+    hidl_vec<hidl_string> fqInstanceNames;
+    // copying out for timeoutIPC
+    auto listRet = timeoutIPC(manager, &IServiceManager::list, [&] (const auto &names) {
+        fqInstanceNames = names;
     });
     if (!listRet.isOk()) {
         mErr << "Error: Failed to list services for " << mode << ": "
              << listRet.description() << std::endl;
-        status |= DUMP_BINDERIZED_ERROR;
+        return DUMP_BINDERIZED_ERROR;
+    }
+
+    Status status = OK;
+    // server pid, .ptr value of binder object, child pids
+    std::map<std::string, DebugInfo> allDebugInfos;
+    std::map<pid_t, std::map<uint64_t, Pids>> allPids;
+    for (const auto &fqInstanceName : fqInstanceNames) {
+        const auto pair = splitFirst(fqInstanceName, '/');
+        const auto &serviceName = pair.first;
+        const auto &instanceName = pair.second;
+        auto getRet = timeoutIPC(manager, &IServiceManager::get, serviceName, instanceName);
+        if (!getRet.isOk()) {
+            mErr << "Warning: Skipping \"" << fqInstanceName << "\": "
+                 << "cannot be fetched from service manager:"
+                 << getRet.description() << std::endl;
+            status |= DUMP_BINDERIZED_ERROR;
+            continue;
+        }
+        sp<IBase> service = getRet;
+        if (service == nullptr) {
+            mErr << "Warning: Skipping \"" << fqInstanceName << "\": "
+                 << "cannot be fetched from service manager (null)";
+            status |= DUMP_BINDERIZED_ERROR;
+            continue;
+        }
+        auto debugRet = timeoutIPC(service, &IBase::getDebugInfo, [&] (const auto &debugInfo) {
+            allDebugInfos[fqInstanceName] = debugInfo;
+            if (debugInfo.pid >= 0) {
+                allPids[static_cast<pid_t>(debugInfo.pid)].clear();
+            }
+        });
+        if (!debugRet.isOk()) {
+            mErr << "Warning: Skipping \"" << fqInstanceName << "\": "
+                 << "debugging information cannot be retrieved:"
+                 << debugRet.description() << std::endl;
+            status |= DUMP_BINDERIZED_ERROR;
+        }
+    }
+    for (auto &pair : allPids) {
+        pid_t serverPid = pair.first;
+        if (!getReferencedPids(serverPid, &allPids[serverPid])) {
+            mErr << "Warning: no information for PID " << serverPid
+                      << ", are you root?" << std::endl;
+            status |= DUMP_BINDERIZED_ERROR;
+        }
+    }
+    for (const auto &fqInstanceName : fqInstanceNames) {
+        auto it = allDebugInfos.find(fqInstanceName);
+        if (it == allDebugInfos.end()) {
+            putEntry(HWSERVICEMANAGER_LIST, {
+                .interfaceName = fqInstanceName,
+                .transport = mode,
+                .serverPid = NO_PID,
+                .serverObjectAddress = NO_PTR,
+                .clientPids = {},
+                .arch = ARCH_UNKNOWN
+            });
+            continue;
+        }
+        const DebugInfo &info = it->second;
+        putEntry(HWSERVICEMANAGER_LIST, {
+            .interfaceName = fqInstanceName,
+            .transport = mode,
+            .serverPid = info.pid,
+            .serverObjectAddress = info.ptr,
+            .clientPids = info.pid == NO_PID || info.ptr == NO_PTR
+                    ? Pids{} : allPids[info.pid][info.ptr],
+            .arch = fromBaseArchitecture(info.arch),
+        });
     }
     return status;
 }
@@ -364,13 +555,14 @@
 void Lshal::usage() const {
     mErr
         << "usage: lshal" << std::endl
-        << "           Dump all hals with default ordering and columns [-itpc]." << std::endl
-        << "       lshal [--interface|-i] [--transport|-t]" << std::endl
+        << "           Dump all hals with default ordering and columns [-ipc]." << std::endl
+        << "       lshal [--interface|-i] [--transport|-t] [-r|--arch]" << std::endl
         << "             [--pid|-p] [--address|-a] [--clients|-c] [--cmdline|-m]" << std::endl
-        << "             [--sort={interface|i|pid|p}]" << std::endl
+        << "             [--sort={interface|i|pid|p}] [--init-vintf[=path]]" << std::endl
         << "           -i, --interface: print the interface name column" << std::endl
         << "           -n, --instance: print the instance name column" << std::endl
         << "           -t, --transport: print the transport mode column" << std::endl
+        << "           -r, --arch: print if the HAL is in 64-bit or 32-bit" << std::endl
         << "           -p, --pid: print the server PID, or server cmdline if -m is set" << std::endl
         << "           -a, --address: print the server object address column" << std::endl
         << "           -c, --clients: print the client PIDs, or client cmdlines if -m is set"
@@ -378,6 +570,8 @@
         << "           -m, --cmdline: print cmdline instead of PIDs" << std::endl
         << "           --sort=i, --sort=interface: sort by interface name" << std::endl
         << "           --sort=p, --sort=pid: sort by server pid" << std::endl
+        << "           --init-vintf=path: form a skeleton HAL manifest to specified file " << std::endl
+        << "                         (stdout if no file specified)" << std::endl
         << "       lshal [-h|--help]" << std::endl
         << "           -h, --help: show this help information." << std::endl;
 }
@@ -388,6 +582,7 @@
         {"help",      no_argument,       0, 'h' },
         {"interface", no_argument,       0, 'i' },
         {"transport", no_argument,       0, 't' },
+        {"arch",      no_argument,       0, 'r' },
         {"pid",       no_argument,       0, 'p' },
         {"address",   no_argument,       0, 'a' },
         {"clients",   no_argument,       0, 'c' },
@@ -395,6 +590,7 @@
 
         // long options without short alternatives
         {"sort",      required_argument, 0, 's' },
+        {"init-vintf",optional_argument, 0, 'v' },
         { 0,          0,                 0,  0  }
     };
 
@@ -403,7 +599,7 @@
     optind = 1;
     for (;;) {
         // using getopt_long in case we want to add other options in the future
-        c = getopt_long(argc, argv, "hitpacm", longOptions, &optionIndex);
+        c = getopt_long(argc, argv, "hitrpacm", longOptions, &optionIndex);
         if (c == -1) {
             break;
         }
@@ -420,6 +616,17 @@
             }
             break;
         }
+        case 'v': {
+            if (optarg) {
+                mFileOutput = new std::ofstream{optarg};
+                mOut = mFileOutput;
+                if (!mFileOutput.buf().is_open()) {
+                    mErr << "Could not open file '" << optarg << "'." << std::endl;
+                    return IO_ERROR;
+                }
+            }
+            mVintf = true;
+        }
         case 'i': {
             mSelectedColumns |= ENABLE_INTERFACE_NAME;
             break;
@@ -428,6 +635,10 @@
             mSelectedColumns |= ENABLE_TRANSPORT;
             break;
         }
+        case 'r': {
+            mSelectedColumns |= ENABLE_ARCH;
+            break;
+        }
         case 'p': {
             mSelectedColumns |= ENABLE_SERVER_PID;
             break;
@@ -452,8 +663,7 @@
     }
 
     if (mSelectedColumns == 0) {
-        mSelectedColumns = ENABLE_INTERFACE_NAME
-                | ENABLE_TRANSPORT | ENABLE_SERVER_PID | ENABLE_CLIENT_PIDS;
+        mSelectedColumns = ENABLE_INTERFACE_NAME | ENABLE_SERVER_PID | ENABLE_CLIENT_PIDS;
     }
     return OK;
 }
diff --git a/cmds/lshal/Lshal.h b/cmds/lshal/Lshal.h
index ead99dc..c9c6660 100644
--- a/cmds/lshal/Lshal.h
+++ b/cmds/lshal/Lshal.h
@@ -19,12 +19,13 @@
 
 #include <stdint.h>
 
-#include <iostream>
+#include <fstream>
 #include <string>
 #include <vector>
 
 #include <android/hidl/manager/1.0/IServiceManager.h>
 
+#include "NullableOStream.h"
 #include "TableEntry.h"
 
 namespace android {
@@ -38,6 +39,7 @@
     DUMP_BINDERIZED_ERROR                   = 1 << 3,
     DUMP_PASSTHROUGH_ERROR                  = 1 << 4,
     DUMP_ALL_LIBS_ERROR                     = 1 << 5,
+    IO_ERROR                                = 1 << 6,
 };
 using Status = unsigned int;
 
@@ -49,17 +51,21 @@
     Status parseArgs(int argc, char **argv);
     Status fetch();
     void postprocess();
-    void dump() const;
+    void dump();
     void usage() const;
-    void putEntry(TableEntry &&entry);
+    void putEntry(TableEntrySource source, TableEntry &&entry);
     Status fetchPassthrough(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);
     Status fetchBinderized(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);
     Status fetchAllLibraries(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager);
     bool getReferencedPids(
         pid_t serverPid, std::map<uint64_t, Pids> *objects) const;
+    void dumpTable();
+    void dumpVintf() const;
     void printLine(
             const std::string &interfaceName,
-            const std::string &transport, const std::string &server,
+            const std::string &transport,
+            const std::string &arch,
+            const std::string &server,
             const std::string &serverCmdline,
             const std::string &address, const std::string &clients,
             const std::string &clientCmdlines) const ;
@@ -68,14 +74,21 @@
     // Call getCmdline on all pid in pids. If it returns empty string, the process might
     // have died, and the pid is removed from pids.
     void removeDeadProcesses(Pids *pids);
+    void forEachTable(const std::function<void(Table &)> &f);
+    void forEachTable(const std::function<void(const Table &)> &f) const;
 
-    Table mTable{};
-    std::ostream &mErr = std::cerr;
-    std::ostream &mOut = std::cout;
+    Table mServicesTable{};
+    Table mPassthroughRefTable{};
+    Table mImplementationsTable{};
+
+    NullableOStream<std::ostream> mErr = std::cerr;
+    NullableOStream<std::ostream> mOut = std::cout;
+    NullableOStream<std::ofstream> mFileOutput = nullptr;
     TableEntryCompare mSortColumn = nullptr;
     TableEntrySelect mSelectedColumns = 0;
     // If true, cmdlines will be printed instead of pid.
-    bool mEnableCmdlines;
+    bool mEnableCmdlines = false;
+    bool mVintf = false;
     // If an entry does not exist, need to ask /proc/{pid}/cmdline to get it.
     // If an entry exist but is an empty string, process might have died.
     // If an entry exist and not empty, it contains the cached content of /proc/{pid}/cmdline.
diff --git a/cmds/lshal/NullableOStream.h b/cmds/lshal/NullableOStream.h
new file mode 100644
index 0000000..ab37a04
--- /dev/null
+++ b/cmds/lshal/NullableOStream.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FRAMEWORK_NATIVE_CMDS_LSHAL_NULLABLE_O_STREAM_H_
+#define FRAMEWORK_NATIVE_CMDS_LSHAL_NULLABLE_O_STREAM_H_
+
+#include <iostream>
+
+namespace android {
+namespace lshal {
+
+template<typename S>
+class NullableOStream {
+public:
+    NullableOStream(S &os) : mOs(&os) {}
+    NullableOStream(S *os) : mOs(os) {}
+    NullableOStream &operator=(S &os) {
+        mOs = &os;
+        return *this;
+    }
+    NullableOStream &operator=(S *os) {
+        mOs = os;
+        return *this;
+    }
+    template<typename Other>
+    NullableOStream &operator=(const NullableOStream<Other> &other) {
+        mOs = other.mOs;
+        return *this;
+    }
+
+    const NullableOStream &operator<<(std::ostream& (*pf)(std::ostream&)) const {
+        if (mOs) {
+            (*mOs) << pf;
+        }
+        return *this;
+    }
+    template<typename T>
+    const NullableOStream &operator<<(const T &rhs) const {
+        if (mOs) {
+            (*mOs) << rhs;
+        }
+        return *this;
+    }
+    S& buf() const {
+        return *mOs;
+    }
+    operator bool() const {
+        return mOs != nullptr;
+    }
+private:
+    template<typename>
+    friend class NullableOStream;
+
+    S *mOs = nullptr;
+};
+
+}  // namespace lshal
+}  // namespace android
+
+#endif  // FRAMEWORK_NATIVE_CMDS_LSHAL_NULLABLE_O_STREAM_H_
diff --git a/cmds/lshal/TableEntry.h b/cmds/lshal/TableEntry.h
index 4ec3a0c..2407b42 100644
--- a/cmds/lshal/TableEntry.h
+++ b/cmds/lshal/TableEntry.h
@@ -28,6 +28,21 @@
 
 using Pids = std::vector<int32_t>;
 
+enum : unsigned int {
+    HWSERVICEMANAGER_LIST, // through defaultServiceManager()->list()
+    PTSERVICEMANAGER_REG_CLIENT, // through registerPassthroughClient
+    LIST_DLLIB, // through listing dynamic libraries
+};
+using TableEntrySource = unsigned int;
+
+enum : unsigned int {
+    ARCH_UNKNOWN = 0,
+    ARCH64       = 1 << 0,
+    ARCH32       = 1 << 1,
+    ARCH_BOTH    = ARCH32 | ARCH64
+};
+using Architecture = unsigned int;
+
 struct TableEntry {
     std::string interfaceName;
     std::string transport;
@@ -36,6 +51,7 @@
     uint64_t serverObjectAddress;
     Pids clientPids;
     std::vector<std::string> clientCmdlines;
+    Architecture arch;
 
     static bool sortByInterfaceName(const TableEntry &a, const TableEntry &b) {
         return a.interfaceName < b.interfaceName;
@@ -45,7 +61,17 @@
     };
 };
 
-using Table = std::vector<TableEntry>;
+struct Table {
+    using Entries = std::vector<TableEntry>;
+    std::string description;
+    Entries entries;
+
+    Entries::iterator begin() { return entries.begin(); }
+    Entries::const_iterator begin() const { return entries.begin(); }
+    Entries::iterator end() { return entries.end(); }
+    Entries::const_iterator end() const { return entries.end(); }
+};
+
 using TableEntryCompare = std::function<bool(const TableEntry &, const TableEntry &)>;
 
 enum : unsigned int {
@@ -53,7 +79,8 @@
     ENABLE_TRANSPORT      = 1 << 1,
     ENABLE_SERVER_PID     = 1 << 2,
     ENABLE_SERVER_ADDR    = 1 << 3,
-    ENABLE_CLIENT_PIDS    = 1 << 4
+    ENABLE_CLIENT_PIDS    = 1 << 4,
+    ENABLE_ARCH           = 1 << 5
 };
 
 using TableEntrySelect = unsigned int;
diff --git a/cmds/surfacereplayer/replayer/Android.mk b/cmds/surfacereplayer/replayer/Android.mk
index 9f06033..1dd926c 100644
--- a/cmds/surfacereplayer/replayer/Android.mk
+++ b/cmds/surfacereplayer/replayer/Android.mk
@@ -42,6 +42,7 @@
     libutils \
     libprotobuf-cpp-lite \
     libbase \
+    libnativewindow \
 
 LOCAL_STATIC_LIBRARIES := \
     libtrace_proto \
diff --git a/cmds/surfacereplayer/replayer/Replayer.cpp b/cmds/surfacereplayer/replayer/Replayer.cpp
index a49da37..35b63ec 100644
--- a/cmds/surfacereplayer/replayer/Replayer.cpp
+++ b/cmds/surfacereplayer/replayer/Replayer.cpp
@@ -22,8 +22,6 @@
 
 #include <android-base/file.h>
 
-#include <binder/IMemory.h>
-
 #include <gui/BufferQueue.h>
 #include <gui/ISurfaceComposer.h>
 #include <gui/Surface.h>
diff --git a/cmds/surfacereplayer/replayer/Replayer.h b/cmds/surfacereplayer/replayer/Replayer.h
index f757fc3..f36c9fd 100644
--- a/cmds/surfacereplayer/replayer/Replayer.h
+++ b/cmds/surfacereplayer/replayer/Replayer.h
@@ -29,6 +29,7 @@
 #include <utils/Errors.h>
 #include <utils/StrongPointer.h>
 
+#include <stdatomic.h>
 #include <condition_variable>
 #include <memory>
 #include <mutex>
diff --git a/docs/Doxyfile b/docs/Doxyfile
index 3ea453f..bb0ca32 100644
--- a/docs/Doxyfile
+++ b/docs/Doxyfile
@@ -14,90 +14,90 @@
 # Project related configuration options
 #---------------------------------------------------------------------------
 
-# This tag specifies the encoding used for all characters in the config file 
-# that follow. The default is UTF-8 which is also the encoding used for all 
-# text before the first occurrence of this tag. Doxygen uses libiconv (or the 
-# iconv built into libc) for the transcoding. See 
+# This tag specifies the encoding used for all characters in the config file
+# that follow. The default is UTF-8 which is also the encoding used for all
+# text before the first occurrence of this tag. Doxygen uses libiconv (or the
+# iconv built into libc) for the transcoding. See
 # http://www.gnu.org/software/libiconv for the list of possible encodings.
 
 DOXYFILE_ENCODING      = UTF-8
 
-# The PROJECT_NAME tag is a single word (or sequence of words) that should 
-# identify the project. Note that if you do not use Doxywizard you need 
+# The PROJECT_NAME tag is a single word (or sequence of words) that should
+# identify the project. Note that if you do not use Doxywizard you need
 # to put quotes around the project name if it contains spaces.
 
 PROJECT_NAME           = "NDK API"
 
-# The PROJECT_NUMBER tag can be used to enter a project or revision number. 
-# This could be handy for archiving the generated documentation or 
+# The PROJECT_NUMBER tag can be used to enter a project or revision number.
+# This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 
+PROJECT_NUMBER         =
 
-# Using the PROJECT_BRIEF tag one can provide an optional one line description 
-# for a project that appears at the top of each page and should give viewer 
+# Using the PROJECT_BRIEF tag one can provide an optional one line description
+# for a project that appears at the top of each page and should give viewer
 # a quick idea about the purpose of the project. Keep the description short.
 
 PROJECT_BRIEF          = ""
 
-# With the PROJECT_LOGO tag one can specify an logo or icon that is 
-# included in the documentation. The maximum height of the logo should not 
-# exceed 55 pixels and the maximum width should not exceed 200 pixels. 
+# With the PROJECT_LOGO tag one can specify an logo or icon that is
+# included in the documentation. The maximum height of the logo should not
+# exceed 55 pixels and the maximum width should not exceed 200 pixels.
 # Doxygen will copy the logo to the output directory.
 
 PROJECT_LOGO           = logo.png
 
-# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
-# base path where the generated documentation will be put. 
-# If a relative path is entered, it will be relative to the location 
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
+# base path where the generated documentation will be put.
+# If a relative path is entered, it will be relative to the location
 # where doxygen was started. If left blank the current directory will be used.
 
-OUTPUT_DIRECTORY       = 
+OUTPUT_DIRECTORY       =
 
-# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create 
-# 4096 sub-directories (in 2 levels) under the output directory of each output 
-# format and will distribute the generated files over these directories. 
-# Enabling this option can be useful when feeding doxygen a huge amount of 
-# source files, where putting all generated files in the same directory would 
+# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create
+# 4096 sub-directories (in 2 levels) under the output directory of each output
+# format and will distribute the generated files over these directories.
+# Enabling this option can be useful when feeding doxygen a huge amount of
+# source files, where putting all generated files in the same directory would
 # otherwise cause performance problems for the file system.
 
 CREATE_SUBDIRS         = NO
 
-# The OUTPUT_LANGUAGE tag is used to specify the language in which all 
-# documentation generated by doxygen is written. Doxygen will use this 
-# information to generate all constant output in the proper language. 
-# The default language is English, other supported languages are: 
-# Afrikaans, Arabic, Brazilian, Catalan, Chinese, Chinese-Traditional, 
-# Croatian, Czech, Danish, Dutch, Esperanto, Farsi, Finnish, French, German, 
-# Greek, Hungarian, Italian, Japanese, Japanese-en (Japanese with English 
-# messages), Korean, Korean-en, Lithuanian, Norwegian, Macedonian, Persian, 
-# Polish, Portuguese, Romanian, Russian, Serbian, Serbian-Cyrillic, Slovak, 
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all
+# documentation generated by doxygen is written. Doxygen will use this
+# information to generate all constant output in the proper language.
+# The default language is English, other supported languages are:
+# Afrikaans, Arabic, Brazilian, Catalan, Chinese, Chinese-Traditional,
+# Croatian, Czech, Danish, Dutch, Esperanto, Farsi, Finnish, French, German,
+# Greek, Hungarian, Italian, Japanese, Japanese-en (Japanese with English
+# messages), Korean, Korean-en, Lithuanian, Norwegian, Macedonian, Persian,
+# Polish, Portuguese, Romanian, Russian, Serbian, Serbian-Cyrillic, Slovak,
 # Slovene, Spanish, Swedish, Ukrainian, and Vietnamese.
 
 OUTPUT_LANGUAGE        = English
 
-# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will 
-# include brief member descriptions after the members that are listed in 
-# the file and class documentation (similar to JavaDoc). 
+# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will
+# include brief member descriptions after the members that are listed in
+# the file and class documentation (similar to JavaDoc).
 # Set to NO to disable this.
 
 BRIEF_MEMBER_DESC      = YES
 
-# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend 
-# the brief description of a member or function before the detailed description. 
-# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the 
+# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend
+# the brief description of a member or function before the detailed description.
+# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
 # brief descriptions will be completely suppressed.
 
 REPEAT_BRIEF           = YES
 
-# This tag implements a quasi-intelligent brief description abbreviator 
-# that is used to form the text in various listings. Each string 
-# in this list, if found as the leading text of the brief description, will be 
-# stripped from the text and the result after processing the whole list, is 
-# used as the annotated text. Otherwise, the brief description is used as-is. 
-# If left blank, the following values are used ("$name" is automatically 
-# replaced with the name of the entity): "The $name class" "The $name widget" 
-# "The $name file" "is" "provides" "specifies" "contains" 
+# This tag implements a quasi-intelligent brief description abbreviator
+# that is used to form the text in various listings. Each string
+# in this list, if found as the leading text of the brief description, will be
+# stripped from the text and the result after processing the whole list, is
+# used as the annotated text. Otherwise, the brief description is used as-is.
+# If left blank, the following values are used ("$name" is automatically
+# replaced with the name of the entity): "The $name class" "The $name widget"
+# "The $name file" "is" "provides" "specifies" "contains"
 # "represents" "a" "an" "the"
 
 ABBREVIATE_BRIEF       = "The $name class" \
@@ -112,256 +112,256 @@
                          an \
                          the
 
-# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then 
-# Doxygen will generate a detailed section even if there is only a brief 
+# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then
+# Doxygen will generate a detailed section even if there is only a brief
 # description.
 
 ALWAYS_DETAILED_SEC    = NO
 
-# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all 
-# inherited members of a class in the documentation of that class as if those 
-# members were ordinary class members. Constructors, destructors and assignment 
+# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all
+# inherited members of a class in the documentation of that class as if those
+# members were ordinary class members. Constructors, destructors and assignment
 # operators of the base classes will not be shown.
 
 INLINE_INHERITED_MEMB  = NO
 
-# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full 
-# path before files name in the file list and in the header files. If set 
+# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full
+# path before files name in the file list and in the header files. If set
 # to NO the shortest path that makes the file name unique will be used.
 
 FULL_PATH_NAMES        = NO
 
-# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag 
-# can be used to strip a user-defined part of the path. Stripping is 
-# only done if one of the specified strings matches the left-hand part of 
-# the path. The tag can be used to show relative paths in the file list. 
-# If left blank the directory from which doxygen is run is used as the 
-# path to strip. Note that you specify absolute paths here, but also 
-# relative paths, which will be relative from the directory where doxygen is 
+# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag
+# can be used to strip a user-defined part of the path. Stripping is
+# only done if one of the specified strings matches the left-hand part of
+# the path. The tag can be used to show relative paths in the file list.
+# If left blank the directory from which doxygen is run is used as the
+# path to strip. Note that you specify absolute paths here, but also
+# relative paths, which will be relative from the directory where doxygen is
 # started.
 
-STRIP_FROM_PATH        = 
+STRIP_FROM_PATH        =
 
-# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of 
-# the path mentioned in the documentation of a class, which tells 
-# the reader which header file to include in order to use a class. 
-# If left blank only the name of the header file containing the class 
-# definition is used. Otherwise one should specify the include paths that 
+# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of
+# the path mentioned in the documentation of a class, which tells
+# the reader which header file to include in order to use a class.
+# If left blank only the name of the header file containing the class
+# definition is used. Otherwise one should specify the include paths that
 # are normally passed to the compiler using the -I flag.
 
-STRIP_FROM_INC_PATH    = 
+STRIP_FROM_INC_PATH    =
 
-# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter 
-# (but less readable) file names. This can be useful if your file system 
+# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter
+# (but less readable) file names. This can be useful if your file system
 # doesn't support long names like on DOS, Mac, or CD-ROM.
 
 SHORT_NAMES            = NO
 
-# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen 
-# will interpret the first line (until the first dot) of a JavaDoc-style 
-# comment as the brief description. If set to NO, the JavaDoc 
-# comments will behave just like regular Qt-style comments 
+# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen
+# will interpret the first line (until the first dot) of a JavaDoc-style
+# comment as the brief description. If set to NO, the JavaDoc
+# comments will behave just like regular Qt-style comments
 # (thus requiring an explicit @brief command for a brief description.)
 
 JAVADOC_AUTOBRIEF      = NO
 
-# If the QT_AUTOBRIEF tag is set to YES then Doxygen will 
-# interpret the first line (until the first dot) of a Qt-style 
-# comment as the brief description. If set to NO, the comments 
-# will behave just like regular Qt-style comments (thus requiring 
+# If the QT_AUTOBRIEF tag is set to YES then Doxygen will
+# interpret the first line (until the first dot) of a Qt-style
+# comment as the brief description. If set to NO, the comments
+# will behave just like regular Qt-style comments (thus requiring
 # an explicit \brief command for a brief description.)
 
 QT_AUTOBRIEF           = NO
 
-# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen 
-# treat a multi-line C++ special comment block (i.e. a block of //! or /// 
-# comments) as a brief description. This used to be the default behaviour. 
-# The new default is to treat a multi-line C++ comment block as a detailed 
+# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen
+# treat a multi-line C++ special comment block (i.e. a block of //! or ///
+# comments) as a brief description. This used to be the default behaviour.
+# The new default is to treat a multi-line C++ comment block as a detailed
 # description. Set this tag to YES if you prefer the old behaviour instead.
 
 MULTILINE_CPP_IS_BRIEF = NO
 
-# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented 
-# member inherits the documentation from any documented member that it 
+# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented
+# member inherits the documentation from any documented member that it
 # re-implements.
 
 INHERIT_DOCS           = YES
 
-# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce 
-# a new page for each member. If set to NO, the documentation of a member will 
+# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce
+# a new page for each member. If set to NO, the documentation of a member will
 # be part of the file/class/namespace that contains it.
 
 SEPARATE_MEMBER_PAGES  = NO
 
-# The TAB_SIZE tag can be used to set the number of spaces in a tab. 
+# The TAB_SIZE tag can be used to set the number of spaces in a tab.
 # Doxygen uses this value to replace tabs by spaces in code fragments.
 
 TAB_SIZE               = 4
 
-# This tag can be used to specify a number of aliases that acts 
-# as commands in the documentation. An alias has the form "name=value". 
-# For example adding "sideeffect=\par Side Effects:\n" will allow you to 
-# put the command \sideeffect (or @sideeffect) in the documentation, which 
-# will result in a user-defined paragraph with heading "Side Effects:". 
+# This tag can be used to specify a number of aliases that acts
+# as commands in the documentation. An alias has the form "name=value".
+# For example adding "sideeffect=\par Side Effects:\n" will allow you to
+# put the command \sideeffect (or @sideeffect) in the documentation, which
+# will result in a user-defined paragraph with heading "Side Effects:".
 # You can put \n's in the value part of an alias to insert newlines.
 
-ALIASES                = 
+ALIASES                =
 
-# This tag can be used to specify a number of word-keyword mappings (TCL only). 
-# A mapping has the form "name=value". For example adding 
-# "class=itcl::class" will allow you to use the command class in the 
+# This tag can be used to specify a number of word-keyword mappings (TCL only).
+# A mapping has the form "name=value". For example adding
+# "class=itcl::class" will allow you to use the command class in the
 # itcl::class meaning.
 
-TCL_SUBST              = 
+TCL_SUBST              =
 
-# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C 
-# sources only. Doxygen will then generate output that is more tailored for C. 
-# For instance, some of the names that are used will be different. The list 
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C
+# sources only. Doxygen will then generate output that is more tailored for C.
+# For instance, some of the names that are used will be different. The list
 # of all members will be omitted, etc.
 
 OPTIMIZE_OUTPUT_FOR_C  = YES
 
-# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java 
-# sources only. Doxygen will then generate output that is more tailored for 
-# Java. For instance, namespaces will be presented as packages, qualified 
+# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java
+# sources only. Doxygen will then generate output that is more tailored for
+# Java. For instance, namespaces will be presented as packages, qualified
 # scopes will look different, etc.
 
 OPTIMIZE_OUTPUT_JAVA   = NO
 
-# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran 
-# sources only. Doxygen will then generate output that is more tailored for 
+# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran
+# sources only. Doxygen will then generate output that is more tailored for
 # Fortran.
 
 OPTIMIZE_FOR_FORTRAN   = NO
 
-# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL 
-# sources. Doxygen will then generate output that is tailored for 
+# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL
+# sources. Doxygen will then generate output that is tailored for
 # VHDL.
 
 OPTIMIZE_OUTPUT_VHDL   = NO
 
-# Doxygen selects the parser to use depending on the extension of the files it 
-# parses. With this tag you can assign which parser to use for a given 
-# extension. Doxygen has a built-in mapping, but you can override or extend it 
-# using this tag. The format is ext=language, where ext is a file extension, 
-# and language is one of the parsers supported by doxygen: IDL, Java, 
-# Javascript, CSharp, C, C++, D, PHP, Objective-C, Python, Fortran, VHDL, C, 
-# C++. For instance to make doxygen treat .inc files as Fortran files (default 
-# is PHP), and .f files as C (default is Fortran), use: inc=Fortran f=C. Note 
-# that for custom extensions you also need to set FILE_PATTERNS otherwise the 
+# Doxygen selects the parser to use depending on the extension of the files it
+# parses. With this tag you can assign which parser to use for a given
+# extension. Doxygen has a built-in mapping, but you can override or extend it
+# using this tag. The format is ext=language, where ext is a file extension,
+# and language is one of the parsers supported by doxygen: IDL, Java,
+# Javascript, CSharp, C, C++, D, PHP, Objective-C, Python, Fortran, VHDL, C,
+# C++. For instance to make doxygen treat .inc files as Fortran files (default
+# is PHP), and .f files as C (default is Fortran), use: inc=Fortran f=C. Note
+# that for custom extensions you also need to set FILE_PATTERNS otherwise the
 # files are not read by doxygen.
 
-EXTENSION_MAPPING      = 
+EXTENSION_MAPPING      =
 
-# If MARKDOWN_SUPPORT is enabled (the default) then doxygen pre-processes all 
-# comments according to the Markdown format, which allows for more readable 
-# documentation. See http://daringfireball.net/projects/markdown/ for details. 
-# The output of markdown processing is further processed by doxygen, so you 
-# can mix doxygen, HTML, and XML commands with Markdown formatting. 
+# If MARKDOWN_SUPPORT is enabled (the default) then doxygen pre-processes all
+# comments according to the Markdown format, which allows for more readable
+# documentation. See http://daringfireball.net/projects/markdown/ for details.
+# The output of markdown processing is further processed by doxygen, so you
+# can mix doxygen, HTML, and XML commands with Markdown formatting.
 # Disable only in case of backward compatibilities issues.
 
 MARKDOWN_SUPPORT       = YES
 
-# When enabled doxygen tries to link words that correspond to documented classes, 
-# or namespaces to their corresponding documentation. Such a link can be 
-# prevented in individual cases by by putting a % sign in front of the word or 
+# When enabled doxygen tries to link words that correspond to documented classes,
+# or namespaces to their corresponding documentation. Such a link can be
+# prevented in individual cases by by putting a % sign in front of the word or
 # globally by setting AUTOLINK_SUPPORT to NO.
 
 AUTOLINK_SUPPORT       = YES
 
-# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want 
-# to include (a tag file for) the STL sources as input, then you should 
-# set this tag to YES in order to let doxygen match functions declarations and 
-# definitions whose arguments contain STL classes (e.g. func(std::string); v.s. 
-# func(std::string) {}). This also makes the inheritance and collaboration 
+# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want
+# to include (a tag file for) the STL sources as input, then you should
+# set this tag to YES in order to let doxygen match functions declarations and
+# definitions whose arguments contain STL classes (e.g. func(std::string); v.s.
+# func(std::string) {}). This also makes the inheritance and collaboration
 # diagrams that involve STL classes more complete and accurate.
 
 BUILTIN_STL_SUPPORT    = NO
 
-# If you use Microsoft's C++/CLI language, you should set this option to YES to 
+# If you use Microsoft's C++/CLI language, you should set this option to YES to
 # enable parsing support.
 
 CPP_CLI_SUPPORT        = NO
 
-# Set the SIP_SUPPORT tag to YES if your project consists of sip sources only. 
-# Doxygen will parse them like normal C++ but will assume all classes use public 
+# Set the SIP_SUPPORT tag to YES if your project consists of sip sources only.
+# Doxygen will parse them like normal C++ but will assume all classes use public
 # instead of private inheritance when no explicit protection keyword is present.
 
 SIP_SUPPORT            = NO
 
-# For Microsoft's IDL there are propget and propput attributes to indicate 
-# getter and setter methods for a property. Setting this option to YES (the 
-# default) will make doxygen replace the get and set methods by a property in 
-# the documentation. This will only work if the methods are indeed getting or 
-# setting a simple type. If this is not the case, or you want to show the 
+# For Microsoft's IDL there are propget and propput attributes to indicate
+# getter and setter methods for a property. Setting this option to YES (the
+# default) will make doxygen replace the get and set methods by a property in
+# the documentation. This will only work if the methods are indeed getting or
+# setting a simple type. If this is not the case, or you want to show the
 # methods anyway, you should set this option to NO.
 
 IDL_PROPERTY_SUPPORT   = YES
 
-# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC 
-# tag is set to YES, then doxygen will reuse the documentation of the first 
-# member in the group (if any) for the other members of the group. By default 
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
+# tag is set to YES, then doxygen will reuse the documentation of the first
+# member in the group (if any) for the other members of the group. By default
 # all members of a group must be documented explicitly.
 
 DISTRIBUTE_GROUP_DOC   = NO
 
-# Set the SUBGROUPING tag to YES (the default) to allow class member groups of 
-# the same type (for instance a group of public functions) to be put as a 
-# subgroup of that type (e.g. under the Public Functions section). Set it to 
-# NO to prevent subgrouping. Alternatively, this can be done per class using 
+# Set the SUBGROUPING tag to YES (the default) to allow class member groups of
+# the same type (for instance a group of public functions) to be put as a
+# subgroup of that type (e.g. under the Public Functions section). Set it to
+# NO to prevent subgrouping. Alternatively, this can be done per class using
 # the \nosubgrouping command.
 
 SUBGROUPING            = YES
 
-# When the INLINE_GROUPED_CLASSES tag is set to YES, classes, structs and 
-# unions are shown inside the group in which they are included (e.g. using 
-# @ingroup) instead of on a separate page (for HTML and Man pages) or 
+# When the INLINE_GROUPED_CLASSES tag is set to YES, classes, structs and
+# unions are shown inside the group in which they are included (e.g. using
+# @ingroup) instead of on a separate page (for HTML and Man pages) or
 # section (for LaTeX and RTF).
 
 INLINE_GROUPED_CLASSES = NO
 
-# When the INLINE_SIMPLE_STRUCTS tag is set to YES, structs, classes, and 
-# unions with only public data fields will be shown inline in the documentation 
-# of the scope in which they are defined (i.e. file, namespace, or group 
-# documentation), provided this scope is documented. If set to NO (the default), 
-# structs, classes, and unions are shown on a separate page (for HTML and Man 
+# When the INLINE_SIMPLE_STRUCTS tag is set to YES, structs, classes, and
+# unions with only public data fields will be shown inline in the documentation
+# of the scope in which they are defined (i.e. file, namespace, or group
+# documentation), provided this scope is documented. If set to NO (the default),
+# structs, classes, and unions are shown on a separate page (for HTML and Man
 # pages) or section (for LaTeX and RTF).
 
 INLINE_SIMPLE_STRUCTS  = NO
 
-# When TYPEDEF_HIDES_STRUCT is enabled, a typedef of a struct, union, or enum 
-# is documented as struct, union, or enum with the name of the typedef. So 
-# typedef struct TypeS {} TypeT, will appear in the documentation as a struct 
-# with name TypeT. When disabled the typedef will appear as a member of a file, 
-# namespace, or class. And the struct will be named TypeS. This can typically 
-# be useful for C code in case the coding convention dictates that all compound 
+# When TYPEDEF_HIDES_STRUCT is enabled, a typedef of a struct, union, or enum
+# is documented as struct, union, or enum with the name of the typedef. So
+# typedef struct TypeS {} TypeT, will appear in the documentation as a struct
+# with name TypeT. When disabled the typedef will appear as a member of a file,
+# namespace, or class. And the struct will be named TypeS. This can typically
+# be useful for C code in case the coding convention dictates that all compound
 # types are typedef'ed and only the typedef is referenced, never the tag name.
 
 TYPEDEF_HIDES_STRUCT   = NO
 
-# The SYMBOL_CACHE_SIZE determines the size of the internal cache use to 
-# determine which symbols to keep in memory and which to flush to disk. 
-# When the cache is full, less often used symbols will be written to disk. 
-# For small to medium size projects (<1000 input files) the default value is 
-# probably good enough. For larger projects a too small cache size can cause 
-# doxygen to be busy swapping symbols to and from disk most of the time 
-# causing a significant performance penalty. 
-# If the system has enough physical memory increasing the cache will improve the 
-# performance by keeping more symbols in memory. Note that the value works on 
-# a logarithmic scale so increasing the size by one will roughly double the 
-# memory usage. The cache size is given by this formula: 
-# 2^(16+SYMBOL_CACHE_SIZE). The valid range is 0..9, the default is 0, 
+# The SYMBOL_CACHE_SIZE determines the size of the internal cache use to
+# determine which symbols to keep in memory and which to flush to disk.
+# When the cache is full, less often used symbols will be written to disk.
+# For small to medium size projects (<1000 input files) the default value is
+# probably good enough. For larger projects a too small cache size can cause
+# doxygen to be busy swapping symbols to and from disk most of the time
+# causing a significant performance penalty.
+# If the system has enough physical memory increasing the cache will improve the
+# performance by keeping more symbols in memory. Note that the value works on
+# a logarithmic scale so increasing the size by one will roughly double the
+# memory usage. The cache size is given by this formula:
+# 2^(16+SYMBOL_CACHE_SIZE). The valid range is 0..9, the default is 0,
 # corresponding to a cache size of 2^16 = 65536 symbols.
 
 SYMBOL_CACHE_SIZE      = 0
 
-# Similar to the SYMBOL_CACHE_SIZE the size of the symbol lookup cache can be 
-# set using LOOKUP_CACHE_SIZE. This cache is used to resolve symbols given 
-# their name and scope. Since this can be an expensive process and often the 
-# same symbol appear multiple times in the code, doxygen keeps a cache of 
-# pre-resolved symbols. If the cache is too small doxygen will become slower. 
-# If the cache is too large, memory is wasted. The cache size is given by this 
-# formula: 2^(16+LOOKUP_CACHE_SIZE). The valid range is 0..9, the default is 0, 
+# Similar to the SYMBOL_CACHE_SIZE the size of the symbol lookup cache can be
+# set using LOOKUP_CACHE_SIZE. This cache is used to resolve symbols given
+# their name and scope. Since this can be an expensive process and often the
+# same symbol appear multiple times in the code, doxygen keeps a cache of
+# pre-resolved symbols. If the cache is too small doxygen will become slower.
+# If the cache is too large, memory is wasted. The cache size is given by this
+# formula: 2^(16+LOOKUP_CACHE_SIZE). The valid range is 0..9, the default is 0,
 # corresponding to a cache size of 2^16 = 65536 symbols.
 
 LOOKUP_CACHE_SIZE      = 0
@@ -370,329 +370,329 @@
 # Build related configuration options
 #---------------------------------------------------------------------------
 
-# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in 
-# documentation are documented, even if no documentation was available. 
-# Private class members and static file members will be hidden unless 
+# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in
+# documentation are documented, even if no documentation was available.
+# Private class members and static file members will be hidden unless
 # the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES
 
 EXTRACT_ALL            = YES
 
-# If the EXTRACT_PRIVATE tag is set to YES all private members of a class 
+# If the EXTRACT_PRIVATE tag is set to YES all private members of a class
 # will be included in the documentation.
 
 EXTRACT_PRIVATE        = NO
 
-# If the EXTRACT_PACKAGE tag is set to YES all members with package or internal 
+# If the EXTRACT_PACKAGE tag is set to YES all members with package or internal
 # scope will be included in the documentation.
 
 EXTRACT_PACKAGE        = NO
 
-# If the EXTRACT_STATIC tag is set to YES all static members of a file 
+# If the EXTRACT_STATIC tag is set to YES all static members of a file
 # will be included in the documentation.
 
 EXTRACT_STATIC         = NO
 
-# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) 
-# defined locally in source files will be included in the documentation. 
+# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs)
+# defined locally in source files will be included in the documentation.
 # If set to NO only classes defined in header files are included.
 
 EXTRACT_LOCAL_CLASSES  = YES
 
-# This flag is only useful for Objective-C code. When set to YES local 
-# methods, which are defined in the implementation section but not in 
-# the interface are included in the documentation. 
+# This flag is only useful for Objective-C code. When set to YES local
+# methods, which are defined in the implementation section but not in
+# the interface are included in the documentation.
 # If set to NO (the default) only methods in the interface are included.
 
 EXTRACT_LOCAL_METHODS  = NO
 
-# If this flag is set to YES, the members of anonymous namespaces will be 
-# extracted and appear in the documentation as a namespace called 
-# 'anonymous_namespace{file}', where file will be replaced with the base 
-# name of the file that contains the anonymous namespace. By default 
+# If this flag is set to YES, the members of anonymous namespaces will be
+# extracted and appear in the documentation as a namespace called
+# 'anonymous_namespace{file}', where file will be replaced with the base
+# name of the file that contains the anonymous namespace. By default
 # anonymous namespaces are hidden.
 
 EXTRACT_ANON_NSPACES   = NO
 
-# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all 
-# undocumented members of documented classes, files or namespaces. 
-# If set to NO (the default) these members will be included in the 
-# various overviews, but no documentation section is generated. 
+# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all
+# undocumented members of documented classes, files or namespaces.
+# If set to NO (the default) these members will be included in the
+# various overviews, but no documentation section is generated.
 # This option has no effect if EXTRACT_ALL is enabled.
 
 HIDE_UNDOC_MEMBERS     = NO
 
-# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all 
-# undocumented classes that are normally visible in the class hierarchy. 
-# If set to NO (the default) these classes will be included in the various 
+# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all
+# undocumented classes that are normally visible in the class hierarchy.
+# If set to NO (the default) these classes will be included in the various
 # overviews. This option has no effect if EXTRACT_ALL is enabled.
 
 HIDE_UNDOC_CLASSES     = NO
 
-# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all 
-# friend (class|struct|union) declarations. 
-# If set to NO (the default) these declarations will be included in the 
+# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all
+# friend (class|struct|union) declarations.
+# If set to NO (the default) these declarations will be included in the
 # documentation.
 
 HIDE_FRIEND_COMPOUNDS  = NO
 
-# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any 
-# documentation blocks found inside the body of a function. 
-# If set to NO (the default) these blocks will be appended to the 
+# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any
+# documentation blocks found inside the body of a function.
+# If set to NO (the default) these blocks will be appended to the
 # function's detailed documentation block.
 
 HIDE_IN_BODY_DOCS      = NO
 
-# The INTERNAL_DOCS tag determines if documentation 
-# that is typed after a \internal command is included. If the tag is set 
-# to NO (the default) then the documentation will be excluded. 
+# The INTERNAL_DOCS tag determines if documentation
+# that is typed after a \internal command is included. If the tag is set
+# to NO (the default) then the documentation will be excluded.
 # Set it to YES to include the internal documentation.
 
 INTERNAL_DOCS          = NO
 
-# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate 
-# file names in lower-case letters. If set to YES upper-case letters are also 
-# allowed. This is useful if you have classes or files whose names only differ 
-# in case and if your file system supports case sensitive file names. Windows 
+# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate
+# file names in lower-case letters. If set to YES upper-case letters are also
+# allowed. This is useful if you have classes or files whose names only differ
+# in case and if your file system supports case sensitive file names. Windows
 # and Mac users are advised to set this option to NO.
 
 CASE_SENSE_NAMES       = NO
 
-# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen 
-# will show members with their full class and namespace scopes in the 
+# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen
+# will show members with their full class and namespace scopes in the
 # documentation. If set to YES the scope will be hidden.
 
 HIDE_SCOPE_NAMES       = YES
 
-# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen 
-# will put a list of the files that are included by a file in the documentation 
+# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen
+# will put a list of the files that are included by a file in the documentation
 # of that file.
 
 SHOW_INCLUDE_FILES     = YES
 
-# If the FORCE_LOCAL_INCLUDES tag is set to YES then Doxygen 
-# will list include files with double quotes in the documentation 
+# If the FORCE_LOCAL_INCLUDES tag is set to YES then Doxygen
+# will list include files with double quotes in the documentation
 # rather than with sharp brackets.
 
 FORCE_LOCAL_INCLUDES   = NO
 
-# If the INLINE_INFO tag is set to YES (the default) then a tag [inline] 
+# If the INLINE_INFO tag is set to YES (the default) then a tag [inline]
 # is inserted in the documentation for inline members.
 
 INLINE_INFO            = YES
 
-# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen 
-# will sort the (detailed) documentation of file and class members 
-# alphabetically by member name. If set to NO the members will appear in 
+# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen
+# will sort the (detailed) documentation of file and class members
+# alphabetically by member name. If set to NO the members will appear in
 # declaration order.
 
 SORT_MEMBER_DOCS       = YES
 
-# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the 
-# brief documentation of file, namespace and class members alphabetically 
-# by member name. If set to NO (the default) the members will appear in 
+# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the
+# brief documentation of file, namespace and class members alphabetically
+# by member name. If set to NO (the default) the members will appear in
 # declaration order.
 
 SORT_BRIEF_DOCS        = NO
 
-# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen 
-# will sort the (brief and detailed) documentation of class members so that 
-# constructors and destructors are listed first. If set to NO (the default) 
-# the constructors will appear in the respective orders defined by 
-# SORT_MEMBER_DOCS and SORT_BRIEF_DOCS. 
-# This tag will be ignored for brief docs if SORT_BRIEF_DOCS is set to NO 
+# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen
+# will sort the (brief and detailed) documentation of class members so that
+# constructors and destructors are listed first. If set to NO (the default)
+# the constructors will appear in the respective orders defined by
+# SORT_MEMBER_DOCS and SORT_BRIEF_DOCS.
+# This tag will be ignored for brief docs if SORT_BRIEF_DOCS is set to NO
 # and ignored for detailed docs if SORT_MEMBER_DOCS is set to NO.
 
 SORT_MEMBERS_CTORS_1ST = NO
 
-# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the 
-# hierarchy of group names into alphabetical order. If set to NO (the default) 
+# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the
+# hierarchy of group names into alphabetical order. If set to NO (the default)
 # the group names will appear in their defined order.
 
 SORT_GROUP_NAMES       = NO
 
-# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be 
-# sorted by fully-qualified names, including namespaces. If set to 
-# NO (the default), the class list will be sorted only by class name, 
-# not including the namespace part. 
-# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES. 
-# Note: This option applies only to the class list, not to the 
+# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be
+# sorted by fully-qualified names, including namespaces. If set to
+# NO (the default), the class list will be sorted only by class name,
+# not including the namespace part.
+# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
+# Note: This option applies only to the class list, not to the
 # alphabetical list.
 
 SORT_BY_SCOPE_NAME     = NO
 
-# If the STRICT_PROTO_MATCHING option is enabled and doxygen fails to 
-# do proper type resolution of all parameters of a function it will reject a 
-# match between the prototype and the implementation of a member function even 
-# if there is only one candidate or it is obvious which candidate to choose 
-# by doing a simple string match. By disabling STRICT_PROTO_MATCHING doxygen 
+# If the STRICT_PROTO_MATCHING option is enabled and doxygen fails to
+# do proper type resolution of all parameters of a function it will reject a
+# match between the prototype and the implementation of a member function even
+# if there is only one candidate or it is obvious which candidate to choose
+# by doing a simple string match. By disabling STRICT_PROTO_MATCHING doxygen
 # will still accept a match between prototype and implementation in such cases.
 
 STRICT_PROTO_MATCHING  = NO
 
-# The GENERATE_TODOLIST tag can be used to enable (YES) or 
-# disable (NO) the todo list. This list is created by putting \todo 
+# The GENERATE_TODOLIST tag can be used to enable (YES) or
+# disable (NO) the todo list. This list is created by putting \todo
 # commands in the documentation.
 
 GENERATE_TODOLIST      = YES
 
-# The GENERATE_TESTLIST tag can be used to enable (YES) or 
-# disable (NO) the test list. This list is created by putting \test 
+# The GENERATE_TESTLIST tag can be used to enable (YES) or
+# disable (NO) the test list. This list is created by putting \test
 # commands in the documentation.
 
 GENERATE_TESTLIST      = YES
 
-# The GENERATE_BUGLIST tag can be used to enable (YES) or 
-# disable (NO) the bug list. This list is created by putting \bug 
+# The GENERATE_BUGLIST tag can be used to enable (YES) or
+# disable (NO) the bug list. This list is created by putting \bug
 # commands in the documentation.
 
 GENERATE_BUGLIST       = YES
 
-# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or 
-# disable (NO) the deprecated list. This list is created by putting 
+# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or
+# disable (NO) the deprecated list. This list is created by putting
 # \deprecated commands in the documentation.
 
 GENERATE_DEPRECATEDLIST= YES
 
-# The ENABLED_SECTIONS tag can be used to enable conditional 
-# documentation sections, marked by \if section-label ... \endif 
+# The ENABLED_SECTIONS tag can be used to enable conditional
+# documentation sections, marked by \if section-label ... \endif
 # and \cond section-label ... \endcond blocks.
 
-ENABLED_SECTIONS       = 
+ENABLED_SECTIONS       =
 
-# The MAX_INITIALIZER_LINES tag determines the maximum number of lines 
-# the initial value of a variable or macro consists of for it to appear in 
-# the documentation. If the initializer consists of more lines than specified 
-# here it will be hidden. Use a value of 0 to hide initializers completely. 
-# The appearance of the initializer of individual variables and macros in the 
-# documentation can be controlled using \showinitializer or \hideinitializer 
+# The MAX_INITIALIZER_LINES tag determines the maximum number of lines
+# the initial value of a variable or macro consists of for it to appear in
+# the documentation. If the initializer consists of more lines than specified
+# here it will be hidden. Use a value of 0 to hide initializers completely.
+# The appearance of the initializer of individual variables and macros in the
+# documentation can be controlled using \showinitializer or \hideinitializer
 # command in the documentation regardless of this setting.
 
 MAX_INITIALIZER_LINES  = 26
 
-# Set the SHOW_USED_FILES tag to NO to disable the list of files generated 
-# at the bottom of the documentation of classes and structs. If set to YES the 
+# Set the SHOW_USED_FILES tag to NO to disable the list of files generated
+# at the bottom of the documentation of classes and structs. If set to YES the
 # list will mention the files that were used to generate the documentation.
 
 SHOW_USED_FILES        = YES
 
-# Set the SHOW_FILES tag to NO to disable the generation of the Files page. 
-# This will remove the Files entry from the Quick Index and from the 
+# Set the SHOW_FILES tag to NO to disable the generation of the Files page.
+# This will remove the Files entry from the Quick Index and from the
 # Folder Tree View (if specified). The default is YES.
 
 SHOW_FILES             = YES
 
-# Set the SHOW_NAMESPACES tag to NO to disable the generation of the 
-# Namespaces page.  This will remove the Namespaces entry from the Quick Index 
+# Set the SHOW_NAMESPACES tag to NO to disable the generation of the
+# Namespaces page.  This will remove the Namespaces entry from the Quick Index
 # and from the Folder Tree View (if specified). The default is YES.
 
 SHOW_NAMESPACES        = YES
 
-# The FILE_VERSION_FILTER tag can be used to specify a program or script that 
-# doxygen should invoke to get the current version for each file (typically from 
-# the version control system). Doxygen will invoke the program by executing (via 
-# popen()) the command <command> <input-file>, where <command> is the value of 
-# the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file 
-# provided by doxygen. Whatever the program writes to standard output 
+# The FILE_VERSION_FILTER tag can be used to specify a program or script that
+# doxygen should invoke to get the current version for each file (typically from
+# the version control system). Doxygen will invoke the program by executing (via
+# popen()) the command <command> <input-file>, where <command> is the value of
+# the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file
+# provided by doxygen. Whatever the program writes to standard output
 # is used as the file version. See the manual for examples.
 
-FILE_VERSION_FILTER    = 
+FILE_VERSION_FILTER    =
 
-# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed 
-# by doxygen. The layout file controls the global structure of the generated 
-# output files in an output format independent way. To create the layout file 
-# that represents doxygen's defaults, run doxygen with the -l option. 
-# You can optionally specify a file name after the option, if omitted 
+# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed
+# by doxygen. The layout file controls the global structure of the generated
+# output files in an output format independent way. To create the layout file
+# that represents doxygen's defaults, run doxygen with the -l option.
+# You can optionally specify a file name after the option, if omitted
 # DoxygenLayout.xml will be used as the name of the layout file.
 
-LAYOUT_FILE            = 
+LAYOUT_FILE            =
 
-# The CITE_BIB_FILES tag can be used to specify one or more bib files 
-# containing the references data. This must be a list of .bib files. The 
-# .bib extension is automatically appended if omitted. Using this command 
-# requires the bibtex tool to be installed. See also 
-# http://en.wikipedia.org/wiki/BibTeX for more info. For LaTeX the style 
-# of the bibliography can be controlled using LATEX_BIB_STYLE. To use this 
-# feature you need bibtex and perl available in the search path. Do not use 
+# The CITE_BIB_FILES tag can be used to specify one or more bib files
+# containing the references data. This must be a list of .bib files. The
+# .bib extension is automatically appended if omitted. Using this command
+# requires the bibtex tool to be installed. See also
+# http://en.wikipedia.org/wiki/BibTeX for more info. For LaTeX the style
+# of the bibliography can be controlled using LATEX_BIB_STYLE. To use this
+# feature you need bibtex and perl available in the search path. Do not use
 # file names with spaces, bibtex cannot handle them.
 
-CITE_BIB_FILES         = 
+CITE_BIB_FILES         =
 
 #---------------------------------------------------------------------------
 # configuration options related to warning and progress messages
 #---------------------------------------------------------------------------
 
-# The QUIET tag can be used to turn on/off the messages that are generated 
+# The QUIET tag can be used to turn on/off the messages that are generated
 # by doxygen. Possible values are YES and NO. If left blank NO is used.
 
 QUIET                  = NO
 
-# The WARNINGS tag can be used to turn on/off the warning messages that are 
-# generated by doxygen. Possible values are YES and NO. If left blank 
+# The WARNINGS tag can be used to turn on/off the warning messages that are
+# generated by doxygen. Possible values are YES and NO. If left blank
 # NO is used.
 
 WARNINGS               = YES
 
-# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings 
-# for undocumented members. If EXTRACT_ALL is set to YES then this flag will 
+# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings
+# for undocumented members. If EXTRACT_ALL is set to YES then this flag will
 # automatically be disabled.
 
 WARN_IF_UNDOCUMENTED   = YES
 
-# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for 
-# potential errors in the documentation, such as not documenting some 
-# parameters in a documented function, or documenting parameters that 
+# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for
+# potential errors in the documentation, such as not documenting some
+# parameters in a documented function, or documenting parameters that
 # don't exist or using markup commands wrongly.
 
 WARN_IF_DOC_ERROR      = YES
 
-# The WARN_NO_PARAMDOC option can be enabled to get warnings for 
-# functions that are documented, but have no documentation for their parameters 
-# or return value. If set to NO (the default) doxygen will only warn about 
-# wrong or incomplete parameter documentation, but not about the absence of 
+# The WARN_NO_PARAMDOC option can be enabled to get warnings for
+# functions that are documented, but have no documentation for their parameters
+# or return value. If set to NO (the default) doxygen will only warn about
+# wrong or incomplete parameter documentation, but not about the absence of
 # documentation.
 
 WARN_NO_PARAMDOC       = NO
 
-# The WARN_FORMAT tag determines the format of the warning messages that 
-# doxygen can produce. The string should contain the $file, $line, and $text 
-# tags, which will be replaced by the file and line number from which the 
-# warning originated and the warning text. Optionally the format may contain 
-# $version, which will be replaced by the version of the file (if it could 
+# The WARN_FORMAT tag determines the format of the warning messages that
+# doxygen can produce. The string should contain the $file, $line, and $text
+# tags, which will be replaced by the file and line number from which the
+# warning originated and the warning text. Optionally the format may contain
+# $version, which will be replaced by the version of the file (if it could
 # be obtained via FILE_VERSION_FILTER)
 
 WARN_FORMAT            = "$file:$line: $text"
 
-# The WARN_LOGFILE tag can be used to specify a file to which warning 
-# and error messages should be written. If left blank the output is written 
+# The WARN_LOGFILE tag can be used to specify a file to which warning
+# and error messages should be written. If left blank the output is written
 # to stderr.
 
-WARN_LOGFILE           = 
+WARN_LOGFILE           =
 
 #---------------------------------------------------------------------------
 # configuration options related to the input files
 #---------------------------------------------------------------------------
 
-# The INPUT tag can be used to specify the files and/or directories that contain 
-# documented source files. You may enter file names like "myfile.cpp" or 
-# directories like "/usr/src/myproject". Separate the files or directories 
+# The INPUT tag can be used to specify the files and/or directories that contain
+# documented source files. You may enter file names like "myfile.cpp" or
+# directories like "/usr/src/myproject". Separate the files or directories
 # with spaces.
 
 INPUT                  = ../include/android ../../av/include/ndk ../../av/include/camera/ndk
 
-# This tag can be used to specify the character encoding of the source files 
-# that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is 
-# also the default input encoding. Doxygen uses libiconv (or the iconv built 
-# into libc) for the transcoding. See http://www.gnu.org/software/libiconv for 
+# This tag can be used to specify the character encoding of the source files
+# that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is
+# also the default input encoding. Doxygen uses libiconv (or the iconv built
+# into libc) for the transcoding. See http://www.gnu.org/software/libiconv for
 # the list of possible encodings.
 
 INPUT_ENCODING         = UTF-8
 
-# If the value of the INPUT tag contains directories, you can use the 
-# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp 
-# and *.h) to filter out the source-files in the directories. If left 
-# blank the following patterns are tested: 
-# *.c *.cc *.cxx *.cpp *.c++ *.d *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh 
-# *.hxx *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.dox *.py 
+# If the value of the INPUT tag contains directories, you can use the
+# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
+# and *.h) to filter out the source-files in the directories. If left
+# blank the following patterns are tested:
+# *.c *.cc *.cxx *.cpp *.c++ *.d *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh
+# *.hxx *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.dox *.py
 # *.f90 *.f *.for *.vhd *.vhdl
 
 FILE_PATTERNS          = *.c \
@@ -730,159 +730,159 @@
                          *.vhd \
                          *.vhdl
 
-# The RECURSIVE tag can be used to turn specify whether or not subdirectories 
-# should be searched for input files as well. Possible values are YES and NO. 
+# The RECURSIVE tag can be used to turn specify whether or not subdirectories
+# should be searched for input files as well. Possible values are YES and NO.
 # If left blank NO is used.
 
 RECURSIVE              = YES
 
-# The EXCLUDE tag can be used to specify files and/or directories that should be 
-# excluded from the INPUT source files. This way you can easily exclude a 
-# subdirectory from a directory tree whose root is specified with the INPUT tag. 
-# Note that relative paths are relative to the directory from which doxygen is 
+# The EXCLUDE tag can be used to specify files and/or directories that should be
+# excluded from the INPUT source files. This way you can easily exclude a
+# subdirectory from a directory tree whose root is specified with the INPUT tag.
+# Note that relative paths are relative to the directory from which doxygen is
 # run.
 
-EXCLUDE                = 
+EXCLUDE                =
 
-# The EXCLUDE_SYMLINKS tag can be used to select whether or not files or 
-# directories that are symbolic links (a Unix file system feature) are excluded 
+# The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
+# directories that are symbolic links (a Unix file system feature) are excluded
 # from the input.
 
 EXCLUDE_SYMLINKS       = NO
 
-# If the value of the INPUT tag contains directories, you can use the 
-# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude 
-# certain files from those directories. Note that the wildcards are matched 
-# against the file with absolute path, so to exclude all test directories 
+# If the value of the INPUT tag contains directories, you can use the
+# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
+# certain files from those directories. Note that the wildcards are matched
+# against the file with absolute path, so to exclude all test directories
 # for example use the pattern */test/*
 
-EXCLUDE_PATTERNS       = 
+EXCLUDE_PATTERNS       =
 
-# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names 
-# (namespaces, classes, functions, etc.) that should be excluded from the 
-# output. The symbol name can be a fully qualified name, a word, or if the 
-# wildcard * is used, a substring. Examples: ANamespace, AClass, 
+# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
+# (namespaces, classes, functions, etc.) that should be excluded from the
+# output. The symbol name can be a fully qualified name, a word, or if the
+# wildcard * is used, a substring. Examples: ANamespace, AClass,
 # AClass::ANamespace, ANamespace::*Test
 
-EXCLUDE_SYMBOLS        = 
+EXCLUDE_SYMBOLS        =
 
-# The EXAMPLE_PATH tag can be used to specify one or more files or 
-# directories that contain example code fragments that are included (see 
+# The EXAMPLE_PATH tag can be used to specify one or more files or
+# directories that contain example code fragments that are included (see
 # the \include command).
 
-EXAMPLE_PATH           = 
+EXAMPLE_PATH           =
 
-# If the value of the EXAMPLE_PATH tag contains directories, you can use the 
-# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp 
-# and *.h) to filter out the source-files in the directories. If left 
+# If the value of the EXAMPLE_PATH tag contains directories, you can use the
+# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
+# and *.h) to filter out the source-files in the directories. If left
 # blank all files are included.
 
 EXAMPLE_PATTERNS       = *
 
-# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be 
-# searched for input files to be used with the \include or \dontinclude 
-# commands irrespective of the value of the RECURSIVE tag. 
+# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
+# searched for input files to be used with the \include or \dontinclude
+# commands irrespective of the value of the RECURSIVE tag.
 # Possible values are YES and NO. If left blank NO is used.
 
 EXAMPLE_RECURSIVE      = NO
 
-# The IMAGE_PATH tag can be used to specify one or more files or 
-# directories that contain image that are included in the documentation (see 
+# The IMAGE_PATH tag can be used to specify one or more files or
+# directories that contain image that are included in the documentation (see
 # the \image command).
 
-IMAGE_PATH             = 
+IMAGE_PATH             =
 
-# The INPUT_FILTER tag can be used to specify a program that doxygen should 
-# invoke to filter for each input file. Doxygen will invoke the filter program 
-# by executing (via popen()) the command <filter> <input-file>, where <filter> 
-# is the value of the INPUT_FILTER tag, and <input-file> is the name of an 
-# input file. Doxygen will then use the output that the filter program writes 
-# to standard output.  If FILTER_PATTERNS is specified, this tag will be 
+# The INPUT_FILTER tag can be used to specify a program that doxygen should
+# invoke to filter for each input file. Doxygen will invoke the filter program
+# by executing (via popen()) the command <filter> <input-file>, where <filter>
+# is the value of the INPUT_FILTER tag, and <input-file> is the name of an
+# input file. Doxygen will then use the output that the filter program writes
+# to standard output.  If FILTER_PATTERNS is specified, this tag will be
 # ignored.
 
-INPUT_FILTER           = 
+INPUT_FILTER           =
 
-# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern 
-# basis.  Doxygen will compare the file name with each pattern and apply the 
-# filter if there is a match.  The filters are a list of the form: 
-# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further 
-# info on how filters are used. If FILTER_PATTERNS is empty or if 
+# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
+# basis.  Doxygen will compare the file name with each pattern and apply the
+# filter if there is a match.  The filters are a list of the form:
+# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further
+# info on how filters are used. If FILTER_PATTERNS is empty or if
 # non of the patterns match the file name, INPUT_FILTER is applied.
 
-FILTER_PATTERNS        = 
+FILTER_PATTERNS        =
 
-# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using 
-# INPUT_FILTER) will be used to filter the input files when producing source 
+# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
+# INPUT_FILTER) will be used to filter the input files when producing source
 # files to browse (i.e. when SOURCE_BROWSER is set to YES).
 
 FILTER_SOURCE_FILES    = NO
 
-# The FILTER_SOURCE_PATTERNS tag can be used to specify source filters per file 
-# pattern. A pattern will override the setting for FILTER_PATTERN (if any) 
-# and it is also possible to disable source filtering for a specific pattern 
-# using *.ext= (so without naming a filter). This option only has effect when 
+# The FILTER_SOURCE_PATTERNS tag can be used to specify source filters per file
+# pattern. A pattern will override the setting for FILTER_PATTERN (if any)
+# and it is also possible to disable source filtering for a specific pattern
+# using *.ext= (so without naming a filter). This option only has effect when
 # FILTER_SOURCE_FILES is enabled.
 
-FILTER_SOURCE_PATTERNS = 
+FILTER_SOURCE_PATTERNS =
 
-# If the USE_MD_FILE_AS_MAINPAGE tag refers to the name of a markdown file that 
-# is part of the input, its contents will be placed on the main page (index.html). 
-# This can be useful if you have a project on for instance GitHub and want reuse 
+# If the USE_MD_FILE_AS_MAINPAGE tag refers to the name of a markdown file that
+# is part of the input, its contents will be placed on the main page (index.html).
+# This can be useful if you have a project on for instance GitHub and want reuse
 # the introduction page also for the doxygen output.
 
-USE_MDFILE_AS_MAINPAGE = 
+USE_MDFILE_AS_MAINPAGE =
 
 #---------------------------------------------------------------------------
 # configuration options related to source browsing
 #---------------------------------------------------------------------------
 
-# If the SOURCE_BROWSER tag is set to YES then a list of source files will 
-# be generated. Documented entities will be cross-referenced with these sources. 
-# Note: To get rid of all source code in the generated output, make sure also 
+# If the SOURCE_BROWSER tag is set to YES then a list of source files will
+# be generated. Documented entities will be cross-referenced with these sources.
+# Note: To get rid of all source code in the generated output, make sure also
 # VERBATIM_HEADERS is set to NO.
 
 SOURCE_BROWSER         = NO
 
-# Setting the INLINE_SOURCES tag to YES will include the body 
+# Setting the INLINE_SOURCES tag to YES will include the body
 # of functions and classes directly in the documentation.
 
 INLINE_SOURCES         = NO
 
-# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct 
-# doxygen to hide any special comment blocks from generated source code 
+# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct
+# doxygen to hide any special comment blocks from generated source code
 # fragments. Normal C, C++ and Fortran comments will always remain visible.
 
 STRIP_CODE_COMMENTS    = NO
 
-# If the REFERENCED_BY_RELATION tag is set to YES 
-# then for each documented function all documented 
+# If the REFERENCED_BY_RELATION tag is set to YES
+# then for each documented function all documented
 # functions referencing it will be listed.
 
 REFERENCED_BY_RELATION = NO
 
-# If the REFERENCES_RELATION tag is set to YES 
-# then for each documented function all documented entities 
+# If the REFERENCES_RELATION tag is set to YES
+# then for each documented function all documented entities
 # called/used by that function will be listed.
 
 REFERENCES_RELATION    = NO
 
-# If the REFERENCES_LINK_SOURCE tag is set to YES (the default) 
-# and SOURCE_BROWSER tag is set to YES, then the hyperlinks from 
-# functions in REFERENCES_RELATION and REFERENCED_BY_RELATION lists will 
+# If the REFERENCES_LINK_SOURCE tag is set to YES (the default)
+# and SOURCE_BROWSER tag is set to YES, then the hyperlinks from
+# functions in REFERENCES_RELATION and REFERENCED_BY_RELATION lists will
 # link to the source code.  Otherwise they will link to the documentation.
 
 REFERENCES_LINK_SOURCE = YES
 
-# If the USE_HTAGS tag is set to YES then the references to source code 
-# will point to the HTML generated by the htags(1) tool instead of doxygen 
-# built-in source browser. The htags tool is part of GNU's global source 
-# tagging system (see http://www.gnu.org/software/global/global.html). You 
+# If the USE_HTAGS tag is set to YES then the references to source code
+# will point to the HTML generated by the htags(1) tool instead of doxygen
+# built-in source browser. The htags tool is part of GNU's global source
+# tagging system (see http://www.gnu.org/software/global/global.html). You
 # will need version 4.8.6 or higher.
 
 USE_HTAGS              = NO
 
-# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen 
-# will generate a verbatim copy of the header file for each class for 
+# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen
+# will generate a verbatim copy of the header file for each class for
 # which an include is specified. Set to NO to disable this.
 
 VERBATIM_HEADERS       = NO
@@ -891,170 +891,170 @@
 # configuration options related to the alphabetical class index
 #---------------------------------------------------------------------------
 
-# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index 
-# of all compounds will be generated. Enable this if the project 
+# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index
+# of all compounds will be generated. Enable this if the project
 # contains a lot of classes, structs, unions or interfaces.
 
 ALPHABETICAL_INDEX     = NO
 
-# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then 
-# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns 
+# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then
+# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns
 # in which this list will be split (can be a number in the range [1..20])
 
 COLS_IN_ALPHA_INDEX    = 5
 
-# In case all classes in a project start with a common prefix, all 
-# classes will be put under the same header in the alphabetical index. 
-# The IGNORE_PREFIX tag can be used to specify one or more prefixes that 
+# In case all classes in a project start with a common prefix, all
+# classes will be put under the same header in the alphabetical index.
+# The IGNORE_PREFIX tag can be used to specify one or more prefixes that
 # should be ignored while generating the index headers.
 
-IGNORE_PREFIX          = 
+IGNORE_PREFIX          =
 
 #---------------------------------------------------------------------------
 # configuration options related to the HTML output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_HTML tag is set to YES (the default) Doxygen will 
+# If the GENERATE_HTML tag is set to YES (the default) Doxygen will
 # generate HTML output.
 
 GENERATE_HTML          = YES
 
-# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. 
-# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# The HTML_OUTPUT tag is used to specify where the HTML docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
 # put in front of it. If left blank `html' will be used as the default path.
 
 HTML_OUTPUT            = $(HTML_OUTPUT)
 
-# The HTML_FILE_EXTENSION tag can be used to specify the file extension for 
-# each generated HTML page (for example: .htm,.php,.asp). If it is left blank 
+# The HTML_FILE_EXTENSION tag can be used to specify the file extension for
+# each generated HTML page (for example: .htm,.php,.asp). If it is left blank
 # doxygen will generate files with .html extension.
 
 HTML_FILE_EXTENSION    = .html
 
-# The HTML_HEADER tag can be used to specify a personal HTML header for 
-# each generated HTML page. If it is left blank doxygen will generate a 
-# standard header. Note that when using a custom header you are responsible  
-# for the proper inclusion of any scripts and style sheets that doxygen 
-# needs, which is dependent on the configuration options used. 
-# It is advised to generate a default header using "doxygen -w html 
-# header.html footer.html stylesheet.css YourConfigFile" and then modify 
-# that header. Note that the header is subject to change so you typically 
-# have to redo this when upgrading to a newer version of doxygen or when 
+# The HTML_HEADER tag can be used to specify a personal HTML header for
+# each generated HTML page. If it is left blank doxygen will generate a
+# standard header. Note that when using a custom header you are responsible
+# for the proper inclusion of any scripts and style sheets that doxygen
+# needs, which is dependent on the configuration options used.
+# It is advised to generate a default header using "doxygen -w html
+# header.html footer.html stylesheet.css YourConfigFile" and then modify
+# that header. Note that the header is subject to change so you typically
+# have to redo this when upgrading to a newer version of doxygen or when
 # changing the value of configuration settings such as GENERATE_TREEVIEW!
 
 HTML_HEADER            = $(HTML_HEADER)
 
-# The HTML_FOOTER tag can be used to specify a personal HTML footer for 
-# each generated HTML page. If it is left blank doxygen will generate a 
+# The HTML_FOOTER tag can be used to specify a personal HTML footer for
+# each generated HTML page. If it is left blank doxygen will generate a
 # standard footer.
 
 HTML_FOOTER            = $(HTML_FOOTER)
 
-# The HTML_STYLESHEET tag can be used to specify a user-defined cascading 
-# style sheet that is used by each HTML page. It can be used to 
-# fine-tune the look of the HTML output. If left blank doxygen will 
-# generate a default style sheet. Note that it is recommended to use 
-# HTML_EXTRA_STYLESHEET instead of this one, as it is more robust and this 
+# The HTML_STYLESHEET tag can be used to specify a user-defined cascading
+# style sheet that is used by each HTML page. It can be used to
+# fine-tune the look of the HTML output. If left blank doxygen will
+# generate a default style sheet. Note that it is recommended to use
+# HTML_EXTRA_STYLESHEET instead of this one, as it is more robust and this
 # tag will in the future become obsolete.
 
-HTML_STYLESHEET        = 
+HTML_STYLESHEET        =
 
-# The HTML_EXTRA_STYLESHEET tag can be used to specify an additional 
-# user-defined cascading style sheet that is included after the standard 
-# style sheets created by doxygen. Using this option one can overrule 
-# certain style aspects. This is preferred over using HTML_STYLESHEET 
-# since it does not replace the standard style sheet and is therefor more 
-# robust against future updates. Doxygen will copy the style sheet file to 
+# The HTML_EXTRA_STYLESHEET tag can be used to specify an additional
+# user-defined cascading style sheet that is included after the standard
+# style sheets created by doxygen. Using this option one can overrule
+# certain style aspects. This is preferred over using HTML_STYLESHEET
+# since it does not replace the standard style sheet and is therefor more
+# robust against future updates. Doxygen will copy the style sheet file to
 # the output directory.
 
-HTML_EXTRA_STYLESHEET  = 
+HTML_EXTRA_STYLESHEET  =
 
-# The HTML_EXTRA_FILES tag can be used to specify one or more extra images or 
-# other source files which should be copied to the HTML output directory. Note 
-# that these files will be copied to the base HTML output directory. Use the 
-# $relpath$ marker in the HTML_HEADER and/or HTML_FOOTER files to load these 
-# files. In the HTML_STYLESHEET file, use the file name only. Also note that 
+# The HTML_EXTRA_FILES tag can be used to specify one or more extra images or
+# other source files which should be copied to the HTML output directory. Note
+# that these files will be copied to the base HTML output directory. Use the
+# $relpath$ marker in the HTML_HEADER and/or HTML_FOOTER files to load these
+# files. In the HTML_STYLESHEET file, use the file name only. Also note that
 # the files will be copied as-is; there are no commands or markers available.
 
-HTML_EXTRA_FILES       = 
+HTML_EXTRA_FILES       =
 
-# The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. 
-# Doxygen will adjust the colors in the style sheet and background images 
-# according to this color. Hue is specified as an angle on a colorwheel, 
-# see http://en.wikipedia.org/wiki/Hue for more information. 
-# For instance the value 0 represents red, 60 is yellow, 120 is green, 
-# 180 is cyan, 240 is blue, 300 purple, and 360 is red again. 
+# The HTML_COLORSTYLE_HUE tag controls the color of the HTML output.
+# Doxygen will adjust the colors in the style sheet and background images
+# according to this color. Hue is specified as an angle on a colorwheel,
+# see http://en.wikipedia.org/wiki/Hue for more information.
+# For instance the value 0 represents red, 60 is yellow, 120 is green,
+# 180 is cyan, 240 is blue, 300 purple, and 360 is red again.
 # The allowed range is 0 to 359.
 
 HTML_COLORSTYLE_HUE    = 220
 
-# The HTML_COLORSTYLE_SAT tag controls the purity (or saturation) of 
-# the colors in the HTML output. For a value of 0 the output will use 
+# The HTML_COLORSTYLE_SAT tag controls the purity (or saturation) of
+# the colors in the HTML output. For a value of 0 the output will use
 # grayscales only. A value of 255 will produce the most vivid colors.
 
 HTML_COLORSTYLE_SAT    = 0
 
-# The HTML_COLORSTYLE_GAMMA tag controls the gamma correction applied to 
-# the luminance component of the colors in the HTML output. Values below 
-# 100 gradually make the output lighter, whereas values above 100 make 
-# the output darker. The value divided by 100 is the actual gamma applied, 
-# so 80 represents a gamma of 0.8, The value 220 represents a gamma of 2.2, 
+# The HTML_COLORSTYLE_GAMMA tag controls the gamma correction applied to
+# the luminance component of the colors in the HTML output. Values below
+# 100 gradually make the output lighter, whereas values above 100 make
+# the output darker. The value divided by 100 is the actual gamma applied,
+# so 80 represents a gamma of 0.8, The value 220 represents a gamma of 2.2,
 # and 100 does not change the gamma.
 
 HTML_COLORSTYLE_GAMMA  = 80
 
-# If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML 
-# page will contain the date and time when the page was generated. Setting 
+# If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML
+# page will contain the date and time when the page was generated. Setting
 # this to NO can help when comparing the output of multiple runs.
 
 HTML_TIMESTAMP         = YES
 
-# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML 
-# documentation will contain sections that can be hidden and shown after the 
+# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
+# documentation will contain sections that can be hidden and shown after the
 # page has loaded.
 
 HTML_DYNAMIC_SECTIONS  = NO
 
-# With HTML_INDEX_NUM_ENTRIES one can control the preferred number of 
-# entries shown in the various tree structured indices initially; the user 
-# can expand and collapse entries dynamically later on. Doxygen will expand 
-# the tree to such a level that at most the specified number of entries are 
-# visible (unless a fully collapsed tree already exceeds this amount). 
-# So setting the number of entries 1 will produce a full collapsed tree by 
-# default. 0 is a special value representing an infinite number of entries 
+# With HTML_INDEX_NUM_ENTRIES one can control the preferred number of
+# entries shown in the various tree structured indices initially; the user
+# can expand and collapse entries dynamically later on. Doxygen will expand
+# the tree to such a level that at most the specified number of entries are
+# visible (unless a fully collapsed tree already exceeds this amount).
+# So setting the number of entries 1 will produce a full collapsed tree by
+# default. 0 is a special value representing an infinite number of entries
 # and will result in a full expanded tree by default.
 
 HTML_INDEX_NUM_ENTRIES = 100
 
-# If the GENERATE_DOCSET tag is set to YES, additional index files 
-# will be generated that can be used as input for Apple's Xcode 3 
-# integrated development environment, introduced with OSX 10.5 (Leopard). 
-# To create a documentation set, doxygen will generate a Makefile in the 
-# HTML output directory. Running make will produce the docset in that 
-# directory and running "make install" will install the docset in 
-# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find 
-# it at startup. 
-# See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html 
+# If the GENERATE_DOCSET tag is set to YES, additional index files
+# will be generated that can be used as input for Apple's Xcode 3
+# integrated development environment, introduced with OSX 10.5 (Leopard).
+# To create a documentation set, doxygen will generate a Makefile in the
+# HTML output directory. Running make will produce the docset in that
+# directory and running "make install" will install the docset in
+# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find
+# it at startup.
+# See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html
 # for more information.
 
 GENERATE_DOCSET        = NO
 
-# When GENERATE_DOCSET tag is set to YES, this tag determines the name of the 
-# feed. A documentation feed provides an umbrella under which multiple 
-# documentation sets from a single provider (such as a company or product suite) 
+# When GENERATE_DOCSET tag is set to YES, this tag determines the name of the
+# feed. A documentation feed provides an umbrella under which multiple
+# documentation sets from a single provider (such as a company or product suite)
 # can be grouped.
 
 DOCSET_FEEDNAME        = "Doxygen generated docs"
 
-# When GENERATE_DOCSET tag is set to YES, this tag specifies a string that 
-# should uniquely identify the documentation set bundle. This should be a 
-# reverse domain-name style string, e.g. com.mycompany.MyDocSet. Doxygen 
+# When GENERATE_DOCSET tag is set to YES, this tag specifies a string that
+# should uniquely identify the documentation set bundle. This should be a
+# reverse domain-name style string, e.g. com.mycompany.MyDocSet. Doxygen
 # will append .docset to the name.
 
 DOCSET_BUNDLE_ID       = org.doxygen.Project
 
-# When GENERATE_PUBLISHER_ID tag specifies a string that should uniquely 
-# identify the documentation publisher. This should be a reverse domain-name 
+# When GENERATE_PUBLISHER_ID tag specifies a string that should uniquely
+# identify the documentation publisher. This should be a reverse domain-name
 # style string, e.g. com.mycompany.MyDocSet.documentation.
 
 DOCSET_PUBLISHER_ID    = org.doxygen.Publisher
@@ -1063,361 +1063,361 @@
 
 DOCSET_PUBLISHER_NAME  = Publisher
 
-# If the GENERATE_HTMLHELP tag is set to YES, additional index files 
-# will be generated that can be used as input for tools like the 
-# Microsoft HTML help workshop to generate a compiled HTML help file (.chm) 
+# If the GENERATE_HTMLHELP tag is set to YES, additional index files
+# will be generated that can be used as input for tools like the
+# Microsoft HTML help workshop to generate a compiled HTML help file (.chm)
 # of the generated HTML documentation.
 
 GENERATE_HTMLHELP      = NO
 
-# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can 
-# be used to specify the file name of the resulting .chm file. You 
-# can add a path in front of the file if the result should not be 
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can
+# be used to specify the file name of the resulting .chm file. You
+# can add a path in front of the file if the result should not be
 # written to the html output directory.
 
-CHM_FILE               = 
+CHM_FILE               =
 
-# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can 
-# be used to specify the location (absolute path including file name) of 
-# the HTML help compiler (hhc.exe). If non-empty doxygen will try to run 
+# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can
+# be used to specify the location (absolute path including file name) of
+# the HTML help compiler (hhc.exe). If non-empty doxygen will try to run
 # the HTML help compiler on the generated index.hhp.
 
-HHC_LOCATION           = 
+HHC_LOCATION           =
 
-# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag 
-# controls if a separate .chi index file is generated (YES) or that 
+# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag
+# controls if a separate .chi index file is generated (YES) or that
 # it should be included in the master .chm file (NO).
 
 GENERATE_CHI           = NO
 
-# If the GENERATE_HTMLHELP tag is set to YES, the CHM_INDEX_ENCODING 
-# is used to encode HtmlHelp index (hhk), content (hhc) and project file 
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_INDEX_ENCODING
+# is used to encode HtmlHelp index (hhk), content (hhc) and project file
 # content.
 
-CHM_INDEX_ENCODING     = 
+CHM_INDEX_ENCODING     =
 
-# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag 
-# controls whether a binary table of contents is generated (YES) or a 
+# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag
+# controls whether a binary table of contents is generated (YES) or a
 # normal table of contents (NO) in the .chm file.
 
 BINARY_TOC             = NO
 
-# The TOC_EXPAND flag can be set to YES to add extra items for group members 
+# The TOC_EXPAND flag can be set to YES to add extra items for group members
 # to the contents of the HTML help documentation and to the tree view.
 
 TOC_EXPAND             = NO
 
-# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and 
-# QHP_VIRTUAL_FOLDER are set, an additional index file will be generated 
-# that can be used as input for Qt's qhelpgenerator to generate a 
+# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and
+# QHP_VIRTUAL_FOLDER are set, an additional index file will be generated
+# that can be used as input for Qt's qhelpgenerator to generate a
 # Qt Compressed Help (.qch) of the generated HTML documentation.
 
 GENERATE_QHP           = NO
 
-# If the QHG_LOCATION tag is specified, the QCH_FILE tag can 
-# be used to specify the file name of the resulting .qch file. 
+# If the QHG_LOCATION tag is specified, the QCH_FILE tag can
+# be used to specify the file name of the resulting .qch file.
 # The path specified is relative to the HTML output folder.
 
-QCH_FILE               = 
+QCH_FILE               =
 
-# The QHP_NAMESPACE tag specifies the namespace to use when generating 
-# Qt Help Project output. For more information please see 
+# The QHP_NAMESPACE tag specifies the namespace to use when generating
+# Qt Help Project output. For more information please see
 # http://doc.trolltech.com/qthelpproject.html#namespace
 
 QHP_NAMESPACE          = org.doxygen.Project
 
-# The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating 
-# Qt Help Project output. For more information please see 
+# The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating
+# Qt Help Project output. For more information please see
 # http://doc.trolltech.com/qthelpproject.html#virtual-folders
 
 QHP_VIRTUAL_FOLDER     = doc
 
-# If QHP_CUST_FILTER_NAME is set, it specifies the name of a custom filter to 
-# add. For more information please see 
+# If QHP_CUST_FILTER_NAME is set, it specifies the name of a custom filter to
+# add. For more information please see
 # http://doc.trolltech.com/qthelpproject.html#custom-filters
 
-QHP_CUST_FILTER_NAME   = 
+QHP_CUST_FILTER_NAME   =
 
-# The QHP_CUST_FILT_ATTRS tag specifies the list of the attributes of the 
-# custom filter to add. For more information please see 
-# <a href="http://doc.trolltech.com/qthelpproject.html#custom-filters"> 
+# The QHP_CUST_FILT_ATTRS tag specifies the list of the attributes of the
+# custom filter to add. For more information please see
+# <a href="http://doc.trolltech.com/qthelpproject.html#custom-filters">
 # Qt Help Project / Custom Filters</a>.
 
-QHP_CUST_FILTER_ATTRS  = 
+QHP_CUST_FILTER_ATTRS  =
 
-# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this 
-# project's 
-# filter section matches. 
-# <a href="http://doc.trolltech.com/qthelpproject.html#filter-attributes"> 
+# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this
+# project's
+# filter section matches.
+# <a href="http://doc.trolltech.com/qthelpproject.html#filter-attributes">
 # Qt Help Project / Filter Attributes</a>.
 
-QHP_SECT_FILTER_ATTRS  = 
+QHP_SECT_FILTER_ATTRS  =
 
-# If the GENERATE_QHP tag is set to YES, the QHG_LOCATION tag can 
-# be used to specify the location of Qt's qhelpgenerator. 
-# If non-empty doxygen will try to run qhelpgenerator on the generated 
+# If the GENERATE_QHP tag is set to YES, the QHG_LOCATION tag can
+# be used to specify the location of Qt's qhelpgenerator.
+# If non-empty doxygen will try to run qhelpgenerator on the generated
 # .qhp file.
 
-QHG_LOCATION           = 
+QHG_LOCATION           =
 
-# If the GENERATE_ECLIPSEHELP tag is set to YES, additional index files  
-# will be generated, which together with the HTML files, form an Eclipse help 
-# plugin. To install this plugin and make it available under the help contents 
-# menu in Eclipse, the contents of the directory containing the HTML and XML 
-# files needs to be copied into the plugins directory of eclipse. The name of 
-# the directory within the plugins directory should be the same as 
-# the ECLIPSE_DOC_ID value. After copying Eclipse needs to be restarted before 
+# If the GENERATE_ECLIPSEHELP tag is set to YES, additional index files
+# will be generated, which together with the HTML files, form an Eclipse help
+# plugin. To install this plugin and make it available under the help contents
+# menu in Eclipse, the contents of the directory containing the HTML and XML
+# files needs to be copied into the plugins directory of eclipse. The name of
+# the directory within the plugins directory should be the same as
+# the ECLIPSE_DOC_ID value. After copying Eclipse needs to be restarted before
 # the help appears.
 
 GENERATE_ECLIPSEHELP   = NO
 
-# A unique identifier for the eclipse help plugin. When installing the plugin 
-# the directory name containing the HTML and XML files should also have 
+# A unique identifier for the eclipse help plugin. When installing the plugin
+# the directory name containing the HTML and XML files should also have
 # this name.
 
 ECLIPSE_DOC_ID         = org.doxygen.Project
 
-# The DISABLE_INDEX tag can be used to turn on/off the condensed index (tabs) 
-# at top of each HTML page. The value NO (the default) enables the index and 
-# the value YES disables it. Since the tabs have the same information as the 
-# navigation tree you can set this option to NO if you already set 
+# The DISABLE_INDEX tag can be used to turn on/off the condensed index (tabs)
+# at top of each HTML page. The value NO (the default) enables the index and
+# the value YES disables it. Since the tabs have the same information as the
+# navigation tree you can set this option to NO if you already set
 # GENERATE_TREEVIEW to YES.
 
 DISABLE_INDEX          = YES
 
-# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index 
-# structure should be generated to display hierarchical information. 
-# If the tag value is set to YES, a side panel will be generated 
-# containing a tree-like index structure (just like the one that 
-# is generated for HTML Help). For this to work a browser that supports 
-# JavaScript, DHTML, CSS and frames is required (i.e. any modern browser). 
-# Windows users are probably better off using the HTML help feature. 
-# Since the tree basically has the same information as the tab index you 
+# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
+# structure should be generated to display hierarchical information.
+# If the tag value is set to YES, a side panel will be generated
+# containing a tree-like index structure (just like the one that
+# is generated for HTML Help). For this to work a browser that supports
+# JavaScript, DHTML, CSS and frames is required (i.e. any modern browser).
+# Windows users are probably better off using the HTML help feature.
+# Since the tree basically has the same information as the tab index you
 # could consider to set DISABLE_INDEX to NO when enabling this option.
 
 GENERATE_TREEVIEW      = NO
 
-# The ENUM_VALUES_PER_LINE tag can be used to set the number of enum values 
-# (range [0,1..20]) that doxygen will group on one line in the generated HTML 
-# documentation. Note that a value of 0 will completely suppress the enum 
+# The ENUM_VALUES_PER_LINE tag can be used to set the number of enum values
+# (range [0,1..20]) that doxygen will group on one line in the generated HTML
+# documentation. Note that a value of 0 will completely suppress the enum
 # values from appearing in the overview section.
 
 ENUM_VALUES_PER_LINE   = 4
 
-# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be 
-# used to set the initial width (in pixels) of the frame in which the tree 
+# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be
+# used to set the initial width (in pixels) of the frame in which the tree
 # is shown.
 
 TREEVIEW_WIDTH         = 250
 
-# When the EXT_LINKS_IN_WINDOW option is set to YES doxygen will open 
+# When the EXT_LINKS_IN_WINDOW option is set to YES doxygen will open
 # links to external symbols imported via tag files in a separate window.
 
 EXT_LINKS_IN_WINDOW    = NO
 
-# Use this tag to change the font size of Latex formulas included 
-# as images in the HTML documentation. The default is 10. Note that 
-# when you change the font size after a successful doxygen run you need 
-# to manually remove any form_*.png images from the HTML output directory 
+# Use this tag to change the font size of Latex formulas included
+# as images in the HTML documentation. The default is 10. Note that
+# when you change the font size after a successful doxygen run you need
+# to manually remove any form_*.png images from the HTML output directory
 # to force them to be regenerated.
 
 FORMULA_FONTSIZE       = 10
 
-# Use the FORMULA_TRANPARENT tag to determine whether or not the images 
-# generated for formulas are transparent PNGs. Transparent PNGs are 
-# not supported properly for IE 6.0, but are supported on all modern browsers. 
-# Note that when changing this option you need to delete any form_*.png files 
+# Use the FORMULA_TRANPARENT tag to determine whether or not the images
+# generated for formulas are transparent PNGs. Transparent PNGs are
+# not supported properly for IE 6.0, but are supported on all modern browsers.
+# Note that when changing this option you need to delete any form_*.png files
 # in the HTML output before the changes have effect.
 
 FORMULA_TRANSPARENT    = YES
 
-# Enable the USE_MATHJAX option to render LaTeX formulas using MathJax 
-# (see http://www.mathjax.org) which uses client side Javascript for the 
-# rendering instead of using prerendered bitmaps. Use this if you do not 
-# have LaTeX installed or if you want to formulas look prettier in the HTML 
-# output. When enabled you may also need to install MathJax separately and 
+# Enable the USE_MATHJAX option to render LaTeX formulas using MathJax
+# (see http://www.mathjax.org) which uses client side Javascript for the
+# rendering instead of using prerendered bitmaps. Use this if you do not
+# have LaTeX installed or if you want to formulas look prettier in the HTML
+# output. When enabled you may also need to install MathJax separately and
 # configure the path to it using the MATHJAX_RELPATH option.
 
 USE_MATHJAX            = NO
 
-# When MathJax is enabled you can set the default output format to be used for 
-# thA MathJax output. Supported types are HTML-CSS, NativeMML (i.e. MathML) and 
-# SVG. The default value is HTML-CSS, which is slower, but has the best 
+# When MathJax is enabled you can set the default output format to be used for
+# thA MathJax output. Supported types are HTML-CSS, NativeMML (i.e. MathML) and
+# SVG. The default value is HTML-CSS, which is slower, but has the best
 # compatibility.
 
 MATHJAX_FORMAT         = HTML-CSS
 
-# When MathJax is enabled you need to specify the location relative to the 
-# HTML output directory using the MATHJAX_RELPATH option. The destination 
-# directory should contain the MathJax.js script. For instance, if the mathjax 
-# directory is located at the same level as the HTML output directory, then 
-# MATHJAX_RELPATH should be ../mathjax. The default value points to 
-# the MathJax Content Delivery Network so you can quickly see the result without 
-# installing MathJax.  However, it is strongly recommended to install a local 
+# When MathJax is enabled you need to specify the location relative to the
+# HTML output directory using the MATHJAX_RELPATH option. The destination
+# directory should contain the MathJax.js script. For instance, if the mathjax
+# directory is located at the same level as the HTML output directory, then
+# MATHJAX_RELPATH should be ../mathjax. The default value points to
+# the MathJax Content Delivery Network so you can quickly see the result without
+# installing MathJax.  However, it is strongly recommended to install a local
 # copy of MathJax from http://www.mathjax.org before deployment.
 
 MATHJAX_RELPATH        = http://cdn.mathjax.org/mathjax/latest
 
-# The MATHJAX_EXTENSIONS tag can be used to specify one or MathJax extension 
+# The MATHJAX_EXTENSIONS tag can be used to specify one or MathJax extension
 # names that should be enabled during MathJax rendering.
 
-MATHJAX_EXTENSIONS     = 
+MATHJAX_EXTENSIONS     =
 
-# When the SEARCHENGINE tag is enabled doxygen will generate a search box 
-# for the HTML output. The underlying search engine uses javascript 
-# and DHTML and should work on any modern browser. Note that when using 
-# HTML help (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets 
-# (GENERATE_DOCSET) there is already a search function so this one should 
-# typically be disabled. For large projects the javascript based search engine 
+# When the SEARCHENGINE tag is enabled doxygen will generate a search box
+# for the HTML output. The underlying search engine uses javascript
+# and DHTML and should work on any modern browser. Note that when using
+# HTML help (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets
+# (GENERATE_DOCSET) there is already a search function so this one should
+# typically be disabled. For large projects the javascript based search engine
 # can be slow, then enabling SERVER_BASED_SEARCH may provide a better solution.
 
 SEARCHENGINE           = NO
 
-# When the SERVER_BASED_SEARCH tag is enabled the search engine will be 
-# implemented using a web server instead of a web client using Javascript. 
-# There are two flavours of web server based search depending on the 
-# EXTERNAL_SEARCH setting. When disabled, doxygen will generate a PHP script for 
-# searching and an index file used by the script. When EXTERNAL_SEARCH is 
-# enabled the indexing and searching needs to be provided by external tools. 
+# When the SERVER_BASED_SEARCH tag is enabled the search engine will be
+# implemented using a web server instead of a web client using Javascript.
+# There are two flavours of web server based search depending on the
+# EXTERNAL_SEARCH setting. When disabled, doxygen will generate a PHP script for
+# searching and an index file used by the script. When EXTERNAL_SEARCH is
+# enabled the indexing and searching needs to be provided by external tools.
 # See the manual for details.
 
 SERVER_BASED_SEARCH    = NO
 
-# When EXTERNAL_SEARCH is enabled doxygen will no longer generate the PHP 
-# script for searching. Instead the search results are written to an XML file 
-# which needs to be processed by an external indexer. Doxygen will invoke an 
-# external search engine pointed to by the SEARCHENGINE_URL option to obtain 
-# the search results. Doxygen ships with an example indexer (doxyindexer) and 
-# search engine (doxysearch.cgi) which are based on the open source search engine 
+# When EXTERNAL_SEARCH is enabled doxygen will no longer generate the PHP
+# script for searching. Instead the search results are written to an XML file
+# which needs to be processed by an external indexer. Doxygen will invoke an
+# external search engine pointed to by the SEARCHENGINE_URL option to obtain
+# the search results. Doxygen ships with an example indexer (doxyindexer) and
+# search engine (doxysearch.cgi) which are based on the open source search engine
 # library Xapian. See the manual for configuration details.
 
 EXTERNAL_SEARCH        = NO
 
-# The SEARCHENGINE_URL should point to a search engine hosted by a web server 
-# which will returned the search results when EXTERNAL_SEARCH is enabled. 
-# Doxygen ships with an example search engine (doxysearch) which is based on 
-# the open source search engine library Xapian. See the manual for configuration 
+# The SEARCHENGINE_URL should point to a search engine hosted by a web server
+# which will returned the search results when EXTERNAL_SEARCH is enabled.
+# Doxygen ships with an example search engine (doxysearch) which is based on
+# the open source search engine library Xapian. See the manual for configuration
 # details.
 
-SEARCHENGINE_URL       = 
+SEARCHENGINE_URL       =
 
-# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the unindexed 
-# search data is written to a file for indexing by an external tool. With the 
+# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the unindexed
+# search data is written to a file for indexing by an external tool. With the
 # SEARCHDATA_FILE tag the name of this file can be specified.
 
 SEARCHDATA_FILE        = searchdata.xml
 
-# When SERVER_BASED_SEARCH AND EXTERNAL_SEARCH are both enabled the 
-# EXTERNAL_SEARCH_ID tag can be used as an identifier for the project. This is 
-# useful in combination with EXTRA_SEARCH_MAPPINGS to search through multiple 
+# When SERVER_BASED_SEARCH AND EXTERNAL_SEARCH are both enabled the
+# EXTERNAL_SEARCH_ID tag can be used as an identifier for the project. This is
+# useful in combination with EXTRA_SEARCH_MAPPINGS to search through multiple
 # projects and redirect the results back to the right project.
 
-EXTERNAL_SEARCH_ID     = 
+EXTERNAL_SEARCH_ID     =
 
-# The EXTRA_SEARCH_MAPPINGS tag can be used to enable searching through doxygen 
-# projects other than the one defined by this configuration file, but that are 
-# all added to the same external search index. Each project needs to have a 
-# unique id set via EXTERNAL_SEARCH_ID. The search mapping then maps the id 
-# of to a relative location where the documentation can be found. 
+# The EXTRA_SEARCH_MAPPINGS tag can be used to enable searching through doxygen
+# projects other than the one defined by this configuration file, but that are
+# all added to the same external search index. Each project needs to have a
+# unique id set via EXTERNAL_SEARCH_ID. The search mapping then maps the id
+# of to a relative location where the documentation can be found.
 # The format is: EXTRA_SEARCH_MAPPINGS = id1=loc1 id2=loc2 ...
 
-EXTRA_SEARCH_MAPPINGS  = 
+EXTRA_SEARCH_MAPPINGS  =
 
 #---------------------------------------------------------------------------
 # configuration options related to the LaTeX output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will 
+# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will
 # generate Latex output.
 
 GENERATE_LATEX         = NO
 
-# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. 
-# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
 # put in front of it. If left blank `latex' will be used as the default path.
 
 LATEX_OUTPUT           = latex
 
-# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be 
-# invoked. If left blank `latex' will be used as the default command name. 
-# Note that when enabling USE_PDFLATEX this option is only used for 
-# generating bitmaps for formulas in the HTML output, but not in the 
+# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
+# invoked. If left blank `latex' will be used as the default command name.
+# Note that when enabling USE_PDFLATEX this option is only used for
+# generating bitmaps for formulas in the HTML output, but not in the
 # Makefile that is written to the output directory.
 
 LATEX_CMD_NAME         = latex
 
-# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to 
-# generate index for LaTeX. If left blank `makeindex' will be used as the 
+# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to
+# generate index for LaTeX. If left blank `makeindex' will be used as the
 # default command name.
 
 MAKEINDEX_CMD_NAME     = makeindex
 
-# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact 
-# LaTeX documents. This may be useful for small projects and may help to 
+# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact
+# LaTeX documents. This may be useful for small projects and may help to
 # save some trees in general.
 
 COMPACT_LATEX          = NO
 
-# The PAPER_TYPE tag can be used to set the paper type that is used 
-# by the printer. Possible values are: a4, letter, legal and 
+# The PAPER_TYPE tag can be used to set the paper type that is used
+# by the printer. Possible values are: a4, letter, legal and
 # executive. If left blank a4wide will be used.
 
 PAPER_TYPE             = a4
 
-# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX 
+# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX
 # packages that should be included in the LaTeX output.
 
-EXTRA_PACKAGES         = 
+EXTRA_PACKAGES         =
 
-# The LATEX_HEADER tag can be used to specify a personal LaTeX header for 
-# the generated latex document. The header should contain everything until 
-# the first chapter. If it is left blank doxygen will generate a 
+# The LATEX_HEADER tag can be used to specify a personal LaTeX header for
+# the generated latex document. The header should contain everything until
+# the first chapter. If it is left blank doxygen will generate a
 # standard header. Notice: only use this tag if you know what you are doing!
 
-LATEX_HEADER           = 
+LATEX_HEADER           =
 
-# The LATEX_FOOTER tag can be used to specify a personal LaTeX footer for 
-# the generated latex document. The footer should contain everything after 
-# the last chapter. If it is left blank doxygen will generate a 
+# The LATEX_FOOTER tag can be used to specify a personal LaTeX footer for
+# the generated latex document. The footer should contain everything after
+# the last chapter. If it is left blank doxygen will generate a
 # standard footer. Notice: only use this tag if you know what you are doing!
 
-LATEX_FOOTER           = 
+LATEX_FOOTER           =
 
-# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated 
-# is prepared for conversion to pdf (using ps2pdf). The pdf file will 
-# contain links (just like the HTML output) instead of page references 
+# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated
+# is prepared for conversion to pdf (using ps2pdf). The pdf file will
+# contain links (just like the HTML output) instead of page references
 # This makes the output suitable for online browsing using a pdf viewer.
 
 PDF_HYPERLINKS         = YES
 
-# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of 
-# plain latex in the generated Makefile. Set this option to YES to get a 
+# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of
+# plain latex in the generated Makefile. Set this option to YES to get a
 # higher quality PDF documentation.
 
 USE_PDFLATEX           = YES
 
-# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode. 
-# command to the generated LaTeX files. This will instruct LaTeX to keep 
-# running if errors occur, instead of asking the user for help. 
+# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode.
+# command to the generated LaTeX files. This will instruct LaTeX to keep
+# running if errors occur, instead of asking the user for help.
 # This option is also used when generating formulas in HTML.
 
 LATEX_BATCHMODE        = NO
 
-# If LATEX_HIDE_INDICES is set to YES then doxygen will not 
-# include the index chapters (such as File Index, Compound Index, etc.) 
+# If LATEX_HIDE_INDICES is set to YES then doxygen will not
+# include the index chapters (such as File Index, Compound Index, etc.)
 # in the output.
 
 LATEX_HIDE_INDICES     = NO
 
-# If LATEX_SOURCE_CODE is set to YES then doxygen will include 
-# source code with syntax highlighting in the LaTeX output. 
-# Note that which sources are shown also depends on other settings 
+# If LATEX_SOURCE_CODE is set to YES then doxygen will include
+# source code with syntax highlighting in the LaTeX output.
+# Note that which sources are shown also depends on other settings
 # such as SOURCE_BROWSER.
 
 LATEX_SOURCE_CODE      = NO
 
-# The LATEX_BIB_STYLE tag can be used to specify the style to use for the 
-# bibliography, e.g. plainnat, or ieeetr. The default style is "plain". See 
+# The LATEX_BIB_STYLE tag can be used to specify the style to use for the
+# bibliography, e.g. plainnat, or ieeetr. The default style is "plain". See
 # http://en.wikipedia.org/wiki/BibTeX for more info.
 
 LATEX_BIB_STYLE        = plain
@@ -1426,68 +1426,68 @@
 # configuration options related to the RTF output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output 
-# The RTF output is optimized for Word 97 and may not look very pretty with 
+# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output
+# The RTF output is optimized for Word 97 and may not look very pretty with
 # other RTF readers or editors.
 
 GENERATE_RTF           = NO
 
-# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. 
-# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# The RTF_OUTPUT tag is used to specify where the RTF docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
 # put in front of it. If left blank `rtf' will be used as the default path.
 
 RTF_OUTPUT             = rtf
 
-# If the COMPACT_RTF tag is set to YES Doxygen generates more compact 
-# RTF documents. This may be useful for small projects and may help to 
+# If the COMPACT_RTF tag is set to YES Doxygen generates more compact
+# RTF documents. This may be useful for small projects and may help to
 # save some trees in general.
 
 COMPACT_RTF            = NO
 
-# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated 
-# will contain hyperlink fields. The RTF file will 
-# contain links (just like the HTML output) instead of page references. 
-# This makes the output suitable for online browsing using WORD or other 
-# programs which support those fields. 
+# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated
+# will contain hyperlink fields. The RTF file will
+# contain links (just like the HTML output) instead of page references.
+# This makes the output suitable for online browsing using WORD or other
+# programs which support those fields.
 # Note: wordpad (write) and others do not support links.
 
 RTF_HYPERLINKS         = NO
 
-# Load style sheet definitions from file. Syntax is similar to doxygen's 
-# config file, i.e. a series of assignments. You only have to provide 
+# Load style sheet definitions from file. Syntax is similar to doxygen's
+# config file, i.e. a series of assignments. You only have to provide
 # replacements, missing definitions are set to their default value.
 
-RTF_STYLESHEET_FILE    = 
+RTF_STYLESHEET_FILE    =
 
-# Set optional variables used in the generation of an rtf document. 
+# Set optional variables used in the generation of an rtf document.
 # Syntax is similar to doxygen's config file.
 
-RTF_EXTENSIONS_FILE    = 
+RTF_EXTENSIONS_FILE    =
 
 #---------------------------------------------------------------------------
 # configuration options related to the man page output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_MAN tag is set to YES (the default) Doxygen will 
+# If the GENERATE_MAN tag is set to YES (the default) Doxygen will
 # generate man pages
 
 GENERATE_MAN           = NO
 
-# The MAN_OUTPUT tag is used to specify where the man pages will be put. 
-# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# The MAN_OUTPUT tag is used to specify where the man pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
 # put in front of it. If left blank `man' will be used as the default path.
 
 MAN_OUTPUT             = man
 
-# The MAN_EXTENSION tag determines the extension that is added to 
+# The MAN_EXTENSION tag determines the extension that is added to
 # the generated man pages (default is the subroutine's section .3)
 
 MAN_EXTENSION          = .3
 
-# If the MAN_LINKS tag is set to YES and Doxygen generates man output, 
-# then it will generate one additional man file for each entity 
-# documented in the real man page(s). These additional files 
-# only source the real man page, but without them the man command 
+# If the MAN_LINKS tag is set to YES and Doxygen generates man output,
+# then it will generate one additional man file for each entity
+# documented in the real man page(s). These additional files
+# only source the real man page, but without them the man command
 # would be unable to find the correct page. The default is NO.
 
 MAN_LINKS              = NO
@@ -1496,33 +1496,33 @@
 # configuration options related to the XML output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_XML tag is set to YES Doxygen will 
-# generate an XML file that captures the structure of 
+# If the GENERATE_XML tag is set to YES Doxygen will
+# generate an XML file that captures the structure of
 # the code including all documentation.
 
 GENERATE_XML           = NO
 
-# The XML_OUTPUT tag is used to specify where the XML pages will be put. 
-# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# The XML_OUTPUT tag is used to specify where the XML pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
 # put in front of it. If left blank `xml' will be used as the default path.
 
 XML_OUTPUT             = xml
 
-# The XML_SCHEMA tag can be used to specify an XML schema, 
-# which can be used by a validating XML parser to check the 
+# The XML_SCHEMA tag can be used to specify an XML schema,
+# which can be used by a validating XML parser to check the
 # syntax of the XML files.
 
-XML_SCHEMA             = 
+XML_SCHEMA             =
 
-# The XML_DTD tag can be used to specify an XML DTD, 
-# which can be used by a validating XML parser to check the 
+# The XML_DTD tag can be used to specify an XML DTD,
+# which can be used by a validating XML parser to check the
 # syntax of the XML files.
 
-XML_DTD                = 
+XML_DTD                =
 
-# If the XML_PROGRAMLISTING tag is set to YES Doxygen will 
-# dump the program listings (including syntax highlighting 
-# and cross-referencing information) to the XML output. Note that 
+# If the XML_PROGRAMLISTING tag is set to YES Doxygen will
+# dump the program listings (including syntax highlighting
+# and cross-referencing information) to the XML output. Note that
 # enabling this will significantly increase the size of the XML output.
 
 XML_PROGRAMLISTING     = YES
@@ -1531,10 +1531,10 @@
 # configuration options for the AutoGen Definitions output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will 
-# generate an AutoGen Definitions (see autogen.sf.net) file 
-# that captures the structure of the code including all 
-# documentation. Note that this feature is still experimental 
+# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will
+# generate an AutoGen Definitions (see autogen.sf.net) file
+# that captures the structure of the code including all
+# documentation. Note that this feature is still experimental
 # and incomplete at the moment.
 
 GENERATE_AUTOGEN_DEF   = NO
@@ -1543,97 +1543,97 @@
 # configuration options related to the Perl module output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_PERLMOD tag is set to YES Doxygen will 
-# generate a Perl module file that captures the structure of 
-# the code including all documentation. Note that this 
-# feature is still experimental and incomplete at the 
+# If the GENERATE_PERLMOD tag is set to YES Doxygen will
+# generate a Perl module file that captures the structure of
+# the code including all documentation. Note that this
+# feature is still experimental and incomplete at the
 # moment.
 
 GENERATE_PERLMOD       = NO
 
-# If the PERLMOD_LATEX tag is set to YES Doxygen will generate 
-# the necessary Makefile rules, Perl scripts and LaTeX code to be able 
+# If the PERLMOD_LATEX tag is set to YES Doxygen will generate
+# the necessary Makefile rules, Perl scripts and LaTeX code to be able
 # to generate PDF and DVI output from the Perl module output.
 
 PERLMOD_LATEX          = NO
 
-# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be 
-# nicely formatted so it can be parsed by a human reader.  This is useful 
-# if you want to understand what is going on.  On the other hand, if this 
-# tag is set to NO the size of the Perl module output will be much smaller 
+# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be
+# nicely formatted so it can be parsed by a human reader.  This is useful
+# if you want to understand what is going on.  On the other hand, if this
+# tag is set to NO the size of the Perl module output will be much smaller
 # and Perl will parse it just the same.
 
 PERLMOD_PRETTY         = YES
 
-# The names of the make variables in the generated doxyrules.make file 
-# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. 
-# This is useful so different doxyrules.make files included by the same 
+# The names of the make variables in the generated doxyrules.make file
+# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX.
+# This is useful so different doxyrules.make files included by the same
 # Makefile don't overwrite each other's variables.
 
-PERLMOD_MAKEVAR_PREFIX = 
+PERLMOD_MAKEVAR_PREFIX =
 
 #---------------------------------------------------------------------------
 # Configuration options related to the preprocessor
 #---------------------------------------------------------------------------
 
-# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will 
-# evaluate all C-preprocessor directives found in the sources and include 
+# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will
+# evaluate all C-preprocessor directives found in the sources and include
 # files.
 
-ENABLE_PREPROCESSING   = YES
+ENABLE_PREPROCESSING   = NO
 
-# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro 
-# names in the source code. If set to NO (the default) only conditional 
-# compilation will be performed. Macro expansion can be done in a controlled 
+# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro
+# names in the source code. If set to NO (the default) only conditional
+# compilation will be performed. Macro expansion can be done in a controlled
 # way by setting EXPAND_ONLY_PREDEF to YES.
 
 MACRO_EXPANSION        = NO
 
-# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES 
-# then the macro expansion is limited to the macros specified with the 
+# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES
+# then the macro expansion is limited to the macros specified with the
 # PREDEFINED and EXPAND_AS_DEFINED tags.
 
 EXPAND_ONLY_PREDEF     = NO
 
-# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files 
+# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files
 # pointed to by INCLUDE_PATH will be searched when a #include is found.
 
 SEARCH_INCLUDES        = YES
 
-# The INCLUDE_PATH tag can be used to specify one or more directories that 
-# contain include files that are not input files but should be processed by 
+# The INCLUDE_PATH tag can be used to specify one or more directories that
+# contain include files that are not input files but should be processed by
 # the preprocessor.
 
-INCLUDE_PATH           = 
+INCLUDE_PATH           =
 
-# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard 
-# patterns (like *.h and *.hpp) to filter out the header-files in the 
-# directories. If left blank, the patterns specified with FILE_PATTERNS will 
+# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
+# patterns (like *.h and *.hpp) to filter out the header-files in the
+# directories. If left blank, the patterns specified with FILE_PATTERNS will
 # be used.
 
-INCLUDE_FILE_PATTERNS  = 
+INCLUDE_FILE_PATTERNS  =
 
-# The PREDEFINED tag can be used to specify one or more macro names that 
-# are defined before the preprocessor is started (similar to the -D option of 
-# gcc). The argument of the tag is a list of macros of the form: name 
-# or name=definition (no spaces). If the definition and the = are 
-# omitted =1 is assumed. To prevent a macro definition from being 
-# undefined via #undef or recursively expanded use the := operator 
+# The PREDEFINED tag can be used to specify one or more macro names that
+# are defined before the preprocessor is started (similar to the -D option of
+# gcc). The argument of the tag is a list of macros of the form: name
+# or name=definition (no spaces). If the definition and the = are
+# omitted =1 is assumed. To prevent a macro definition from being
+# undefined via #undef or recursively expanded use the := operator
 # instead of the = operator.
 
-PREDEFINED             = 
+PREDEFINED             =
 
-# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then 
-# this tag can be used to specify a list of macro names that should be expanded. 
-# The macro definition that is found in the sources will be used. 
-# Use the PREDEFINED tag if you want to use a different macro definition that 
+# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then
+# this tag can be used to specify a list of macro names that should be expanded.
+# The macro definition that is found in the sources will be used.
+# Use the PREDEFINED tag if you want to use a different macro definition that
 # overrules the definition found in the source code.
 
-EXPAND_AS_DEFINED      = 
+EXPAND_AS_DEFINED      =
 
-# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then 
-# doxygen's preprocessor will remove all references to function-like macros 
-# that are alone on a line, have an all uppercase name, and do not end with a 
+# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then
+# doxygen's preprocessor will remove all references to function-like macros
+# that are alone on a line, have an all uppercase name, and do not end with a
 # semicolon, because these will confuse the parser if not removed.
 
 SKIP_FUNCTION_MACROS   = YES
@@ -1642,37 +1642,37 @@
 # Configuration::additions related to external references
 #---------------------------------------------------------------------------
 
-# The TAGFILES option can be used to specify one or more tagfiles. For each 
-# tag file the location of the external documentation should be added. The 
-# format of a tag file without this location is as follows: 
-#   TAGFILES = file1 file2 ... 
-# Adding location for the tag files is done as follows: 
-#   TAGFILES = file1=loc1 "file2 = loc2" ... 
-# where "loc1" and "loc2" can be relative or absolute paths 
-# or URLs. Note that each tag file must have a unique name (where the name does 
-# NOT include the path). If a tag file is not located in the directory in which 
+# The TAGFILES option can be used to specify one or more tagfiles. For each
+# tag file the location of the external documentation should be added. The
+# format of a tag file without this location is as follows:
+#   TAGFILES = file1 file2 ...
+# Adding location for the tag files is done as follows:
+#   TAGFILES = file1=loc1 "file2 = loc2" ...
+# where "loc1" and "loc2" can be relative or absolute paths
+# or URLs. Note that each tag file must have a unique name (where the name does
+# NOT include the path). If a tag file is not located in the directory in which
 # doxygen is run, you must also specify the path to the tagfile here.
 
-TAGFILES               = 
+TAGFILES               =
 
-# When a file name is specified after GENERATE_TAGFILE, doxygen will create 
+# When a file name is specified after GENERATE_TAGFILE, doxygen will create
 # a tag file that is based on the input files it reads.
 
-GENERATE_TAGFILE       = 
+GENERATE_TAGFILE       =
 
-# If the ALLEXTERNALS tag is set to YES all external classes will be listed 
-# in the class index. If set to NO only the inherited external classes 
+# If the ALLEXTERNALS tag is set to YES all external classes will be listed
+# in the class index. If set to NO only the inherited external classes
 # will be listed.
 
 ALLEXTERNALS           = NO
 
-# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed 
-# in the modules index. If set to NO, only the current project's groups will 
+# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed
+# in the modules index. If set to NO, only the current project's groups will
 # be listed.
 
 EXTERNAL_GROUPS        = YES
 
-# The PERL_PATH should be the absolute path and name of the perl script 
+# The PERL_PATH should be the absolute path and name of the perl script
 # interpreter (i.e. the result of `which perl').
 
 PERL_PATH              = /usr/bin/perl
@@ -1681,222 +1681,222 @@
 # Configuration options related to the dot tool
 #---------------------------------------------------------------------------
 
-# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will 
-# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base 
-# or super classes. Setting the tag to NO turns the diagrams off. Note that 
-# this option also works with HAVE_DOT disabled, but it is recommended to 
+# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will
+# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base
+# or super classes. Setting the tag to NO turns the diagrams off. Note that
+# this option also works with HAVE_DOT disabled, but it is recommended to
 # install and use dot, since it yields more powerful graphs.
 
 CLASS_DIAGRAMS         = NO
 
-# You can define message sequence charts within doxygen comments using the \msc 
-# command. Doxygen will then run the mscgen tool (see 
-# http://www.mcternan.me.uk/mscgen/) to produce the chart and insert it in the 
-# documentation. The MSCGEN_PATH tag allows you to specify the directory where 
-# the mscgen tool resides. If left empty the tool is assumed to be found in the 
+# You can define message sequence charts within doxygen comments using the \msc
+# command. Doxygen will then run the mscgen tool (see
+# http://www.mcternan.me.uk/mscgen/) to produce the chart and insert it in the
+# documentation. The MSCGEN_PATH tag allows you to specify the directory where
+# the mscgen tool resides. If left empty the tool is assumed to be found in the
 # default search path.
 
-MSCGEN_PATH            = 
+MSCGEN_PATH            =
 
-# If set to YES, the inheritance and collaboration graphs will hide 
-# inheritance and usage relations if the target is undocumented 
+# If set to YES, the inheritance and collaboration graphs will hide
+# inheritance and usage relations if the target is undocumented
 # or is not a class.
 
 HIDE_UNDOC_RELATIONS   = YES
 
-# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is 
-# available from the path. This tool is part of Graphviz, a graph visualization 
-# toolkit from AT&T and Lucent Bell Labs. The other options in this section 
+# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is
+# available from the path. This tool is part of Graphviz, a graph visualization
+# toolkit from AT&T and Lucent Bell Labs. The other options in this section
 # have no effect if this option is set to NO (the default)
 
 HAVE_DOT               = NO
 
-# The DOT_NUM_THREADS specifies the number of dot invocations doxygen is 
-# allowed to run in parallel. When set to 0 (the default) doxygen will 
-# base this on the number of processors available in the system. You can set it 
-# explicitly to a value larger than 0 to get control over the balance 
+# The DOT_NUM_THREADS specifies the number of dot invocations doxygen is
+# allowed to run in parallel. When set to 0 (the default) doxygen will
+# base this on the number of processors available in the system. You can set it
+# explicitly to a value larger than 0 to get control over the balance
 # between CPU load and processing speed.
 
 DOT_NUM_THREADS        = 0
 
-# By default doxygen will use the Helvetica font for all dot files that 
-# doxygen generates. When you want a differently looking font you can specify 
-# the font name using DOT_FONTNAME. You need to make sure dot is able to find 
-# the font, which can be done by putting it in a standard location or by setting 
-# the DOTFONTPATH environment variable or by setting DOT_FONTPATH to the 
+# By default doxygen will use the Helvetica font for all dot files that
+# doxygen generates. When you want a differently looking font you can specify
+# the font name using DOT_FONTNAME. You need to make sure dot is able to find
+# the font, which can be done by putting it in a standard location or by setting
+# the DOTFONTPATH environment variable or by setting DOT_FONTPATH to the
 # directory containing the font.
 
 DOT_FONTNAME           = Helvetica
 
-# The DOT_FONTSIZE tag can be used to set the size of the font of dot graphs. 
+# The DOT_FONTSIZE tag can be used to set the size of the font of dot graphs.
 # The default size is 10pt.
 
 DOT_FONTSIZE           = 10
 
-# By default doxygen will tell dot to use the Helvetica font. 
-# If you specify a different font using DOT_FONTNAME you can use DOT_FONTPATH to 
+# By default doxygen will tell dot to use the Helvetica font.
+# If you specify a different font using DOT_FONTNAME you can use DOT_FONTPATH to
 # set the path where dot can find it.
 
-DOT_FONTPATH           = 
+DOT_FONTPATH           =
 
-# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen 
-# will generate a graph for each documented class showing the direct and 
-# indirect inheritance relations. Setting this tag to YES will force the 
+# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for each documented class showing the direct and
+# indirect inheritance relations. Setting this tag to YES will force the
 # CLASS_DIAGRAMS tag to NO.
 
 CLASS_GRAPH            = YES
 
-# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen 
-# will generate a graph for each documented class showing the direct and 
-# indirect implementation dependencies (inheritance, containment, and 
+# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for each documented class showing the direct and
+# indirect implementation dependencies (inheritance, containment, and
 # class references variables) of the class with other documented classes.
 
 COLLABORATION_GRAPH    = YES
 
-# If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen 
+# If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen
 # will generate a graph for groups, showing the direct groups dependencies
 
 GROUP_GRAPHS           = YES
 
-# If the UML_LOOK tag is set to YES doxygen will generate inheritance and 
-# collaboration diagrams in a style similar to the OMG's Unified Modeling 
+# If the UML_LOOK tag is set to YES doxygen will generate inheritance and
+# collaboration diagrams in a style similar to the OMG's Unified Modeling
 # Language.
 
 UML_LOOK               = NO
 
-# If the UML_LOOK tag is enabled, the fields and methods are shown inside 
-# the class node. If there are many fields or methods and many nodes the 
-# graph may become too big to be useful. The UML_LIMIT_NUM_FIELDS 
-# threshold limits the number of items for each type to make the size more 
-# managable. Set this to 0 for no limit. Note that the threshold may be 
+# If the UML_LOOK tag is enabled, the fields and methods are shown inside
+# the class node. If there are many fields or methods and many nodes the
+# graph may become too big to be useful. The UML_LIMIT_NUM_FIELDS
+# threshold limits the number of items for each type to make the size more
+# managable. Set this to 0 for no limit. Note that the threshold may be
 # exceeded by 50% before the limit is enforced.
 
 UML_LIMIT_NUM_FIELDS   = 10
 
-# If set to YES, the inheritance and collaboration graphs will show the 
+# If set to YES, the inheritance and collaboration graphs will show the
 # relations between templates and their instances.
 
 TEMPLATE_RELATIONS     = NO
 
-# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT 
-# tags are set to YES then doxygen will generate a graph for each documented 
-# file showing the direct and indirect include dependencies of the file with 
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT
+# tags are set to YES then doxygen will generate a graph for each documented
+# file showing the direct and indirect include dependencies of the file with
 # other documented files.
 
 INCLUDE_GRAPH          = YES
 
-# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and 
-# HAVE_DOT tags are set to YES then doxygen will generate a graph for each 
-# documented header file showing the documented files that directly or 
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and
+# HAVE_DOT tags are set to YES then doxygen will generate a graph for each
+# documented header file showing the documented files that directly or
 # indirectly include this file.
 
 INCLUDED_BY_GRAPH      = YES
 
-# If the CALL_GRAPH and HAVE_DOT options are set to YES then 
-# doxygen will generate a call dependency graph for every global function 
-# or class method. Note that enabling this option will significantly increase 
-# the time of a run. So in most cases it will be better to enable call graphs 
+# If the CALL_GRAPH and HAVE_DOT options are set to YES then
+# doxygen will generate a call dependency graph for every global function
+# or class method. Note that enabling this option will significantly increase
+# the time of a run. So in most cases it will be better to enable call graphs
 # for selected functions only using the \callgraph command.
 
 CALL_GRAPH             = NO
 
-# If the CALLER_GRAPH and HAVE_DOT tags are set to YES then 
-# doxygen will generate a caller dependency graph for every global function 
-# or class method. Note that enabling this option will significantly increase 
-# the time of a run. So in most cases it will be better to enable caller 
+# If the CALLER_GRAPH and HAVE_DOT tags are set to YES then
+# doxygen will generate a caller dependency graph for every global function
+# or class method. Note that enabling this option will significantly increase
+# the time of a run. So in most cases it will be better to enable caller
 # graphs for selected functions only using the \callergraph command.
 
 CALLER_GRAPH           = NO
 
-# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen 
+# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen
 # will generate a graphical hierarchy of all classes instead of a textual one.
 
 GRAPHICAL_HIERARCHY    = YES
 
-# If the DIRECTORY_GRAPH and HAVE_DOT tags are set to YES 
-# then doxygen will show the dependencies a directory has on other directories 
-# in a graphical way. The dependency relations are determined by the #include 
+# If the DIRECTORY_GRAPH and HAVE_DOT tags are set to YES
+# then doxygen will show the dependencies a directory has on other directories
+# in a graphical way. The dependency relations are determined by the #include
 # relations between the files in the directories.
 
 DIRECTORY_GRAPH        = YES
 
-# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images 
-# generated by dot. Possible values are svg, png, jpg, or gif. 
-# If left blank png will be used. If you choose svg you need to set 
-# HTML_FILE_EXTENSION to xhtml in order to make the SVG files 
+# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images
+# generated by dot. Possible values are svg, png, jpg, or gif.
+# If left blank png will be used. If you choose svg you need to set
+# HTML_FILE_EXTENSION to xhtml in order to make the SVG files
 # visible in IE 9+ (other browsers do not have this requirement).
 
 DOT_IMAGE_FORMAT       = png
 
-# If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to 
-# enable generation of interactive SVG images that allow zooming and panning. 
-# Note that this requires a modern browser other than Internet Explorer. 
-# Tested and working are Firefox, Chrome, Safari, and Opera. For IE 9+ you 
-# need to set HTML_FILE_EXTENSION to xhtml in order to make the SVG files 
+# If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
+# enable generation of interactive SVG images that allow zooming and panning.
+# Note that this requires a modern browser other than Internet Explorer.
+# Tested and working are Firefox, Chrome, Safari, and Opera. For IE 9+ you
+# need to set HTML_FILE_EXTENSION to xhtml in order to make the SVG files
 # visible. Older versions of IE do not have SVG support.
 
 INTERACTIVE_SVG        = NO
 
-# The tag DOT_PATH can be used to specify the path where the dot tool can be 
+# The tag DOT_PATH can be used to specify the path where the dot tool can be
 # found. If left blank, it is assumed the dot tool can be found in the path.
 
-DOT_PATH               = 
+DOT_PATH               =
 
-# The DOTFILE_DIRS tag can be used to specify one or more directories that 
-# contain dot files that are included in the documentation (see the 
+# The DOTFILE_DIRS tag can be used to specify one or more directories that
+# contain dot files that are included in the documentation (see the
 # \dotfile command).
 
-DOTFILE_DIRS           = 
+DOTFILE_DIRS           =
 
-# The MSCFILE_DIRS tag can be used to specify one or more directories that 
-# contain msc files that are included in the documentation (see the 
+# The MSCFILE_DIRS tag can be used to specify one or more directories that
+# contain msc files that are included in the documentation (see the
 # \mscfile command).
 
-MSCFILE_DIRS           = 
+MSCFILE_DIRS           =
 
-# The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of 
-# nodes that will be shown in the graph. If the number of nodes in a graph 
-# becomes larger than this value, doxygen will truncate the graph, which is 
-# visualized by representing a node as a red box. Note that doxygen if the 
-# number of direct children of the root node in a graph is already larger than 
-# DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note 
+# The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of
+# nodes that will be shown in the graph. If the number of nodes in a graph
+# becomes larger than this value, doxygen will truncate the graph, which is
+# visualized by representing a node as a red box. Note that doxygen if the
+# number of direct children of the root node in a graph is already larger than
+# DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note
 # that the size of a graph can be further restricted by MAX_DOT_GRAPH_DEPTH.
 
 DOT_GRAPH_MAX_NODES    = 50
 
-# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the 
-# graphs generated by dot. A depth value of 3 means that only nodes reachable 
-# from the root by following a path via at most 3 edges will be shown. Nodes 
-# that lay further from the root node will be omitted. Note that setting this 
-# option to 1 or 2 may greatly reduce the computation time needed for large 
-# code bases. Also note that the size of a graph can be further restricted by 
+# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the
+# graphs generated by dot. A depth value of 3 means that only nodes reachable
+# from the root by following a path via at most 3 edges will be shown. Nodes
+# that lay further from the root node will be omitted. Note that setting this
+# option to 1 or 2 may greatly reduce the computation time needed for large
+# code bases. Also note that the size of a graph can be further restricted by
 # DOT_GRAPH_MAX_NODES. Using a depth of 0 means no depth restriction.
 
 MAX_DOT_GRAPH_DEPTH    = 0
 
-# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent 
-# background. This is disabled by default, because dot on Windows does not 
-# seem to support this out of the box. Warning: Depending on the platform used, 
-# enabling this option may lead to badly anti-aliased labels on the edges of 
+# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent
+# background. This is disabled by default, because dot on Windows does not
+# seem to support this out of the box. Warning: Depending on the platform used,
+# enabling this option may lead to badly anti-aliased labels on the edges of
 # a graph (i.e. they become hard to read).
 
 DOT_TRANSPARENT        = NO
 
-# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output 
-# files in one run (i.e. multiple -o and -T options on the command line). This 
-# makes dot run faster, but since only newer versions of dot (>1.8.10) 
+# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output
+# files in one run (i.e. multiple -o and -T options on the command line). This
+# makes dot run faster, but since only newer versions of dot (>1.8.10)
 # support this, this feature is disabled by default.
 
 DOT_MULTI_TARGETS      = NO
 
-# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will 
-# generate a legend page explaining the meaning of the various boxes and 
+# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will
+# generate a legend page explaining the meaning of the various boxes and
 # arrows in the dot generated graphs.
 
 GENERATE_LEGEND        = YES
 
-# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will 
-# remove the intermediate dot files that are used to generate 
+# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will
+# remove the intermediate dot files that are used to generate
 # the various graphs.
 
 DOT_CLEANUP            = YES
diff --git a/include/android/multinetwork.h b/include/android/multinetwork.h
index be01518..97892f8 100644
--- a/include/android/multinetwork.h
+++ b/include/android/multinetwork.h
@@ -56,12 +56,10 @@
 /**
  * Set the network to be used by the given socket file descriptor.
  *
- * To clear a previous socket binding invoke with NETWORK_UNSPECIFIED.
+ * To clear a previous socket binding, invoke with NETWORK_UNSPECIFIED.
  *
- * This is the equivalent of:
+ * This is the equivalent of: [android.net.Network#bindSocket()](https://developer.android.com/reference/android/net/Network.html#bindSocket(java.net.Socket))
  *
- *     [ android.net.Network#bindSocket() ]
- *     https://developer.android.com/reference/android/net/Network.html#bindSocket(java.net.Socket)
  */
 int android_setsocknetwork(net_handle_t network, int fd);
 
@@ -75,12 +73,10 @@
  * resolutions will fail.  This is by design so an application doesn't
  * accidentally use sockets it thinks are still bound to a particular network.
  *
- * To clear a previous process binding invoke with NETWORK_UNSPECIFIED.
+ * To clear a previous process binding, invoke with NETWORK_UNSPECIFIED.
  *
- * This is the equivalent of:
+ * This is the equivalent of: [android.net.ConnectivityManager#setProcessDefaultNetwork()](https://developer.android.com/reference/android/net/ConnectivityManager.html#setProcessDefaultNetwork(android.net.Network))
  *
- *     [ android.net.ConnectivityManager#setProcessDefaultNetwork() ]
- *     https://developer.android.com/reference/android/net/ConnectivityManager.html#setProcessDefaultNetwork(android.net.Network)
  */
 int android_setprocnetwork(net_handle_t network);
 
@@ -96,10 +92,8 @@
  *     - either |node| or |service| may be NULL, but not both
  *     - |res| must not be NULL
  *
- * This is the equivalent of:
+ * This is the equivalent of: [android.net.Network#getAllByName()](https://developer.android.com/reference/android/net/Network.html#getAllByName(java.lang.String))
  *
- *     [ android.net.Network#getAllByName() ]
- *     https://developer.android.com/reference/android/net/Network.html#getAllByName(java.lang.String)
  */
 int android_getaddrinfofornetwork(net_handle_t network,
         const char *node, const char *service,
diff --git a/include/android/sensor.h b/include/android/sensor.h
index 4a00818..a5e5c05 100644
--- a/include/android/sensor.h
+++ b/include/android/sensor.h
@@ -56,6 +56,7 @@
 extern "C" {
 #endif
 
+typedef struct AHardwareBuffer AHardwareBuffer;
 
 /**
  * Sensor types.
@@ -144,6 +145,30 @@
     AREPORTING_MODE_SPECIAL_TRIGGER = 3
 };
 
+/**
+ * Sensor Direct Report Rates.
+ */
+enum {
+    /** stopped */
+    ASENSOR_DIRECT_RATE_STOP = 0,
+    /** nominal 50Hz */
+    ASENSOR_DIRECT_RATE_NORMAL = 1,
+    /** nominal 200Hz */
+    ASENSOR_DIRECT_RATE_FAST = 2,
+    /** nominal 800Hz */
+    ASENSOR_DIRECT_RATE_VERY_FAST = 3
+};
+
+/**
+ * Sensor Direct Channel Type.
+ */
+enum {
+    /** shared memory created by ASharedMemory_create */
+    ASENSOR_DIRECT_CHANNEL_TYPE_SHARED_MEMORY = 1,
+    /** AHardwareBuffer */
+    ASENSOR_DIRECT_CHANNEL_TYPE_HARDWARE_BUFFER = 2
+};
+
 /*
  * A few useful constants
  */
@@ -391,6 +416,97 @@
  */
 int ASensorManager_destroyEventQueue(ASensorManager* manager, ASensorEventQueue* queue);
 
+#if __ANDROID_API__ >= __ANDROID_API_O__
+/**
+ * Create direct channel based on shared memory
+ *
+ * Create a direct channel of {@link ASENSOR_DIRECT_CHANNEL_TYPE_SHARED_MEMORY} to be used
+ * for configuring sensor direct report.
+ *
+ * \param manager the {@link ASensorManager} instance obtained from
+ *                {@link ASensorManager_getInstanceForPackage}.
+ * \param fd      file descriptor representing a shared memory created by
+ *                {@link ASharedMemory_create}
+ * \param size    size to be used, must be less or equal to size of shared memory.
+ *
+ * \return a positive integer as a channel id to be used in
+ *         {@link ASensorManager_destroyDirectChannel} and
+ *         {@link ASensorManager_configureDirectReport}, or value less or equal to 0 for failures.
+ */
+int ASensorManager_createSharedMemoryDirectChannel(ASensorManager* manager, int fd, size_t size);
+
+/**
+ * Create direct channel based on AHardwareBuffer
+ *
+ * Create a direct channel of {@link ASENSOR_DIRECT_CHANNEL_TYPE_HARDWARE_BUFFER} type to be used
+ * for configuring sensor direct report.
+ *
+ * \param manager the {@link ASensorManager} instance obtained from
+ *                {@link ASensorManager_getInstanceForPackage}.
+ * \param buffer  {@link AHardwareBuffer} instance created by {@link AHardwareBuffer_allocate}.
+ * \param size    the intended size to be used, must be less or equal to size of buffer.
+ *
+ * \return a positive integer as a channel id to be used in
+ *         {@link ASensorManager_destroyDirectChannel} and
+ *         {@link ASensorManager_configureDirectReport}, or value less or equal to 0 for failures.
+ */
+int ASensorManager_createHardwareBufferDirectChannel(
+        ASensorManager* manager, AHardwareBuffer const * buffer, size_t size);
+
+/**
+ * Destroy a direct channel
+ *
+ * Destroy a direct channel previously created using {@link ASensorManager_createDirectChannel}.
+ * The buffer used for creating direct channel does not get destroyed with
+ * {@link ASensorManager_destroy} and has to be close or released separately.
+ *
+ * \param manager the {@link ASensorManager} instance obtained from
+ *                {@link ASensorManager_getInstanceForPackage}.
+ * \param channelId channel id (a positive integer) returned from
+ *                  {@link ASensorManager_createSharedMemoryDirectChannel} or
+ *                  {@link ASensorManager_createHardwareBufferDirectChannel}.
+ */
+void ASensorManager_destroyDirectChannel(ASensorManager* manager, int channelId);
+
+/**
+ * Configure direct report on channel
+ *
+ * Configure sensor direct report on a direct channel: set rate to value other than
+ * {@link ASENSOR_DIRECT_RATE_STOP} so that sensor event can be directly
+ * written into the shared memory region used for creating the buffer; set rate to
+ * {@link ASENSOR_DIRECT_RATE_STOP} will stop the sensor direct report.
+ *
+ * To stop all active sensor direct report configured to a channel, set sensor to NULL and rate to
+ * {@link ASENSOR_DIRECT_RATE_STOP}.
+ *
+ * In order to successfully configure a direct report, the sensor has to support the specified rate
+ * and the channel type, which can be checked by {@link ASensor_getHighestDirectReportRateLevel} and
+ * {@link ASensor_isDirectChannelTypeSupported}, respectively.
+ *
+ * Example:
+ * \code{.cpp}
+ *      ASensorManager *manager = ...;
+ *      ASensor *sensor = ...;
+ *      int channelId = ...;
+ *
+ *      ASensorManager_configureDirectReport(
+ *              manager, sensor, channel_id, ASENSOR_DIRECT_RATE_FAST);
+ * \endcode
+ *
+ * \param manager   the {@link ASensorManager} instance obtained from
+ *                  {@link ASensorManager_getInstanceForPackage}.
+ * \param sensor    a {@link ASensor} to denote which sensor to be operate. It can be NULL if rate
+ *                  is {@link ASENSOR_DIRECT_RATE_STOP}, denoting stopping of all active sensor
+ *                  direct report.
+ * \param channelId channel id (a positive integer) returned from
+ *                  {@link ASensorManager_createSharedMemoryDirectChannel} or
+ *                  {@link ASensorManager_createHardwareBufferDirectChannel}.
+ *
+ * \return 0 for success or negative integer for failure.
+ */
+int ASensorManager_configureDirectReport(
+        ASensorManager* manager, ASensor const* sensor, int channelId, int rate);
+#endif
 
 /*****************************************************************************/
 
@@ -502,6 +618,29 @@
 bool ASensor_isWakeUpSensor(ASensor const* sensor);
 #endif /* __ANDROID_API__ >= 21 */
 
+#if __ANDROID_API__ >= __ANDROID_API_O__
+/**
+ * Test if sensor supports a certain type of direct channel.
+ *
+ * \param sensor  a {@link ASensor} to denote the sensor to be checked.
+ * \param channelType  Channel type constant, either
+ *                     {@ASENSOR_DIRECT_CHANNEL_TYPE_SHARED_MEMORY}
+ *                     or {@link ASENSOR_DIRECT_CHANNEL_TYPE_HARDWARE_BUFFER}.
+ * \returns true if sensor supports the specified direct channel type.
+ */
+bool ASensor_isDirectChannelTypeSupported(ASensor const* sensor, int channelType);
+/**
+ * Get the highest direct rate level that a sensor support.
+ *
+ * \param sensor  a {@link ASensor} to denote the sensor to be checked.
+ *
+ * \return a ASENSOR_DIRECT_RATE_... enum denoting the highest rate level supported by the sensor.
+ *         If return value is {@link ASENSOR_DIRECT_RATE_STOP}, it means the sensor
+ *         does not support direct report.
+ */
+int ASensor_getHighestDirectReportRateLevel(ASensor const* sensor);
+#endif
+
 #ifdef __cplusplus
 };
 #endif
diff --git a/include/android/sharedmem.h b/include/android/sharedmem.h
new file mode 100644
index 0000000..8f8a931
--- /dev/null
+++ b/include/android/sharedmem.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Memory
+ * @{
+ */
+
+/**
+ * @file sharedmem.h
+ */
+
+#ifndef ANDROID_SHARED_MEMORY_H
+#define ANDROID_SHARED_MEMORY_H
+
+#include <stddef.h>
+
+/******************************************************************
+ *
+ * IMPORTANT NOTICE:
+ *
+ *   This file is part of Android's set of stable system headers
+ *   exposed by the Android NDK (Native Development Kit).
+ *
+ *   Third-party source AND binary code relies on the definitions
+ *   here to be FROZEN ON ALL UPCOMING PLATFORM RELEASES.
+ *
+ *   - DO NOT MODIFY ENUMS (EXCEPT IF YOU ADD NEW 32-BIT VALUES)
+ *   - DO NOT MODIFY CONSTANTS OR FUNCTIONAL MACROS
+ *   - DO NOT CHANGE THE SIGNATURE OF FUNCTIONS IN ANY WAY
+ *   - DO NOT CHANGE THE LAYOUT OR SIZE OF STRUCTURES
+ */
+
+/**
+ * Structures and functions for a shared memory buffer that can be shared across process.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if __ANDROID_API__ >= __ANDROID_API_O__
+
+/**
+ * Create a shared memory region.
+ *
+ * Create shared memory region and returns an file descriptor.  The resulting file descriptor can be
+ * mmap'ed to process memory space with PROT_READ | PROT_WRITE | PROT_EXEC. Access to shared memory
+ * region can be restricted with {@link ASharedMemory_setProt}.
+ *
+ * Use close() to release the shared memory region.
+ *
+ * \param name an optional name.
+ * \param size size of the shared memory region
+ * \return file descriptor that denotes the shared memory; error code on failure.
+ */
+int ASharedMemory_create(const char *name, size_t size);
+
+/**
+ * Get the size of the shared memory region.
+ *
+ * \param fd file descriptor of the shared memory region
+ * \return size in bytes; 0 if fd is not a valid shared memory file descriptor.
+ */
+size_t ASharedMemory_getSize(int fd);
+
+/**
+ * Restrict access of shared memory region.
+ *
+ * This function restricts access of a shared memory region. Access can only be removed. The effect
+ * applies globally to all file descriptors in all processes across the system that refer to this
+ * shared memory region. Existing memory mapped regions are not affected.
+ *
+ * It is a common use case to create a shared memory region, map it read/write locally to intialize
+ * content, and then send the shared memory to another process with read only access. Code example
+ * as below (error handling ommited).
+ *
+ * \code{.c}
+ *   int fd = ASharedMemory_create("memory", 128);
+ *
+ *   // By default it has PROT_READ | PROT_WRITE | PROT_EXEC.
+ *   char *buffer = (char *) mmap(NULL, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ *
+ *   strcpy(buffer, "This is an example."); // trivially initialize content
+ *
+ *   // limit access to read only
+ *   ASharedMemory_setProt(fd, PROT_READ);
+ *
+ *   // share fd with another process here and the other process can only map with PROT_READ.
+ * \endcode
+ *
+ * \param fd   file descriptor of the shared memory region.
+ * \param prot any bitwise-or'ed combination of PROT_READ, PROT_WRITE, PROT_EXEC denoting
+ *             updated access. Note access can only be removed, but not added back.
+ * \return 0 for success, error code on failure.
+ */
+int ASharedMemory_setProt(int fd, int prot);
+
+#endif
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif // ANDROID_SHARED_MEMORY_H
+
+/** @} */
diff --git a/include/android/trace.h b/include/android/trace.h
index 6cdcfeb..d3b1fb6 100644
--- a/include/android/trace.h
+++ b/include/android/trace.h
@@ -14,6 +14,13 @@
  * limitations under the License.
  */
 
+/**
+ * @file trace.h
+ * @brief Writes trace events to the system trace buffer.
+ *
+ * These trace events can be collected and visualized using the Systrace tool.
+ * For information about using the Systrace tool, read <a href="https://developer.android.com/studio/profile/systrace.html">Analyzing UI Performance with Systrace</a>.
+ */
 
 #ifndef ANDROID_NATIVE_TRACE_H
 #define ANDROID_NATIVE_TRACE_H
diff --git a/include/binder/HalToken.h b/include/binder/HalToken.h
new file mode 100644
index 0000000..ce97c78
--- /dev/null
+++ b/include/binder/HalToken.h
@@ -0,0 +1,237 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HALTOKEN_H
+#define ANDROID_HALTOKEN_H
+
+#include <binder/Parcel.h>
+#include <hidl/HidlSupport.h>
+
+/**
+ * Hybrid Interfaces
+ * =================
+ *
+ * A hybrid interface is a binder interface that
+ * 1. is implemented both traditionally and as a wrapper around a hidl
+ *    interface, and allows querying whether the underlying instance comes from
+ *    a hidl interface or not; and
+ * 2. allows efficient calls to a hidl interface (if the underlying instance
+ *    comes from a hidl interface) by automatically creating the wrapper in the
+ *    process that calls it.
+ *
+ * Terminology:
+ * - `HalToken`: The type for a "token" of a hidl interface. This is defined to
+ *   be compatible with `ITokenManager.hal`.
+ * - `HInterface`: The base type for a hidl interface. Currently, it is defined
+ *   as `::android::hidl::base::V1_0::IBase`.
+ * - `HALINTERFACE`: The hidl interface that will be sent through binders.
+ * - `INTERFACE`: The binder interface that will be the wrapper of
+ *   `HALINTERFACE`. `INTERFACE` is supposed to be somewhat similar to
+ *   `HALINTERFACE`.
+ *
+ * To demonstrate how this is done, here is an example. Suppose `INTERFACE` is
+ * `IFoo` and `HALINTERFACE` is `HFoo`. The required steps are:
+ * 1. Use DECLARE_HYBRID_META_INTERFACE instead of DECLARE_META_INTERFACE in the
+ *    definition of `IFoo`. The usage is
+ *        DECLARE_HYBRID_META_INTERFACE(IFoo, HFoo)
+ *    inside the body of `IFoo`.
+ * 2. Create a converter class that derives from
+ *    `H2BConverter<HFoo, IFoo, BnFoo>`. Let us call this `H2BFoo`.
+ * 3. Add the following constructor in `H2BFoo` that call the corresponding
+ *    constructors in `H2BConverter`:
+ *        H2BFoo(const sp<HalInterface>& base) : CBase(base) {}
+ *    Note: `CBase = H2BConverter<HFoo, IFoo, BnFoo>` and `HalInterface = HFoo`
+ *    are member typedefs of `H2BConverter<HFoo, IFoo, BnFoo>`, so the above
+ *    line can be copied into `H2BFoo`.
+ * 4. Implement `IFoo` in `H2BFoo` on top of `HFoo`. `H2BConverter` provides a
+ *    protected `mBase` of type `sp<HFoo>` that can be used to access the `HFoo`
+ *    instance. (There is also a public function named `getHalInterface()` that
+ *    returns `mBase`.)
+ * 5. Create a hardware proxy class that derives from
+ *    `HpInterface<BpFoo, H2BFoo>`. Name this class `HpFoo`. (This name cannot
+ *    deviate. See step 8 below.)
+ * 6. Add the following constructor to `HpFoo`:
+ *        HpFoo(const sp<IBinder>& base): PBase(base) {}
+ *    Note: `PBase` a member typedef of `HpInterface<BpFoo, H2BFoo>` that is
+ *    equal to `HpInterface<BpFoo, H2BFoo>` itself, so the above line can be
+ *    copied verbatim into `HpFoo`.
+ * 7. Delegate all functions in `HpFoo` that come from `IFoo` except
+ *    `getHalInterface` to the protected member `mBase`,
+ *    which is defined in `HpInterface<BpFoo, H2BFoo>` (hence in `HpFoo`) with
+ *    type `IFoo`. (There is also a public function named `getBaseInterface()`
+ *    that returns `mBase`.)
+ * 8. Replace the existing `IMPLEMENT_META_INTERFACE` for INTERFACE by
+ *    `IMPLEMENT_HYBRID_META_INTERFACE`. Note that this macro relies on the
+ *    exact naming of `HpFoo`, where `Foo` comes from the interface name `IFoo`.
+ *    An example usage is
+ *        IMPLEMENT_HYBRID_META_INTERFACE(IFoo, HFoo, "example.interface.foo");
+ *
+ * `GETTOKEN` Template Argument
+ * ============================
+ *
+ * Following the instructions above, `H2BConverter` and `HpInterface` would use
+ * `transact()` to send over tokens, with `code` (the first argument of
+ * `transact()`) equal to a 4-byte value of '_GTK'. If this value clashes with
+ * other values already in use in the `Bp` class, it can be changed by supplying
+ * the last optional template argument to `H2BConverter` and `HpInterface`.
+ *
+ */
+
+namespace android {
+
+typedef uint64_t HalToken;
+typedef ::android::hidl::base::V1_0::IBase HInterface;
+
+sp<HInterface> retrieveHalInterface(const HalToken& token);
+bool createHalToken(const sp<HInterface>& interface, HalToken* token);
+bool deleteHalToken(const HalToken& token);
+
+template <
+        typename HINTERFACE,
+        typename INTERFACE,
+        typename BNINTERFACE,
+        uint32_t GETTOKEN = '_GTK'>
+class H2BConverter : public BNINTERFACE {
+public:
+    typedef H2BConverter<HINTERFACE, INTERFACE, BNINTERFACE, GETTOKEN> CBase; // Converter Base
+    typedef INTERFACE BaseInterface;
+    typedef HINTERFACE HalInterface;
+    static constexpr uint32_t GET_HAL_TOKEN = GETTOKEN;
+
+    H2BConverter(const sp<HalInterface>& base) : mBase(base) {}
+    virtual status_t onTransact(uint32_t code,
+            const Parcel& data, Parcel* reply, uint32_t flags = 0);
+    sp<HalInterface> getHalInterface() override { return mBase; }
+    HalInterface* getBaseInterface() { return mBase.get(); }
+
+protected:
+    sp<HalInterface> mBase;
+};
+
+template <
+        typename BPINTERFACE,
+        typename CONVERTER,
+        uint32_t GETTOKEN = '_GTK'>
+class HpInterface : public CONVERTER::BaseInterface {
+public:
+    typedef HpInterface<BPINTERFACE, CONVERTER, GETTOKEN> PBase; // Proxy Base
+    typedef typename CONVERTER::BaseInterface BaseInterface;
+    typedef typename CONVERTER::HalInterface HalInterface;
+    static constexpr uint32_t GET_HAL_TOKEN = GETTOKEN;
+
+    explicit HpInterface(const sp<IBinder>& impl);
+    sp<HalInterface> getHalInterface() override { return mHal; }
+    BaseInterface* getBaseInterface() { return mBase.get(); }
+
+protected:
+    sp<IBinder> mImpl;
+    sp<BaseInterface> mBase;
+    sp<HalInterface> mHal;
+    IBinder* onAsBinder() override { return mImpl.get(); }
+};
+
+// ----------------------------------------------------------------------
+
+#define DECLARE_HYBRID_META_INTERFACE(INTERFACE, HAL)                   \
+    static const ::android::String16 descriptor;                        \
+    static ::android::sp<I##INTERFACE> asInterface(                     \
+            const ::android::sp<::android::IBinder>& obj);              \
+    virtual const ::android::String16& getInterfaceDescriptor() const;  \
+    I##INTERFACE();                                                     \
+    virtual ~I##INTERFACE();                                            \
+    virtual sp<HAL> getHalInterface();                                  \
+
+
+#define IMPLEMENT_HYBRID_META_INTERFACE(INTERFACE, HAL, NAME)           \
+    const ::android::String16 I##INTERFACE::descriptor(NAME);           \
+    const ::android::String16&                                          \
+            I##INTERFACE::getInterfaceDescriptor() const {              \
+        return I##INTERFACE::descriptor;                                \
+    }                                                                   \
+    ::android::sp<I##INTERFACE> I##INTERFACE::asInterface(              \
+            const ::android::sp<::android::IBinder>& obj)               \
+    {                                                                   \
+        ::android::sp<I##INTERFACE> intr;                               \
+        if (obj != NULL) {                                              \
+            intr = static_cast<I##INTERFACE*>(                          \
+                obj->queryLocalInterface(                               \
+                        I##INTERFACE::descriptor).get());               \
+            if (intr == NULL) {                                         \
+                intr = new Hp##INTERFACE(obj);                          \
+            }                                                           \
+        }                                                               \
+        return intr;                                                    \
+    }                                                                   \
+    I##INTERFACE::I##INTERFACE() { }                                    \
+    I##INTERFACE::~I##INTERFACE() { }                                   \
+    sp<HAL> I##INTERFACE::getHalInterface() { return nullptr; }         \
+
+// ----------------------------------------------------------------------
+
+template <
+        typename HINTERFACE,
+        typename INTERFACE,
+        typename BNINTERFACE,
+        uint32_t GETTOKEN>
+status_t H2BConverter<HINTERFACE, INTERFACE, BNINTERFACE, GETTOKEN>::
+        onTransact(
+        uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
+    if (code == GET_HAL_TOKEN) {
+        HalToken token;
+        bool result;
+        result = createHalToken(mBase, &token);
+        if (!result) {
+            ALOGE("H2BConverter: Failed to create HAL token.");
+        }
+        reply->writeBool(result);
+        reply->writeUint64(token);
+        return NO_ERROR;
+    }
+    return BNINTERFACE::onTransact(code, data, reply, flags);
+}
+
+template <typename BPINTERFACE, typename CONVERTER, uint32_t GETTOKEN>
+HpInterface<BPINTERFACE, CONVERTER, GETTOKEN>::HpInterface(
+        const sp<IBinder>& impl) : mImpl(impl) {
+    Parcel data, reply;
+    data.writeInterfaceToken(BaseInterface::getInterfaceDescriptor());
+    if (impl->transact(GET_HAL_TOKEN, data, &reply) == NO_ERROR) {
+        bool tokenCreated = reply.readBool();
+        HalToken token = reply.readUint64();
+        if (!tokenCreated) {
+            ALOGE("HpInterface: Sender failed to create HAL token.");
+            mBase = new BPINTERFACE(impl);
+        } else {
+            sp<HInterface> hInterface = retrieveHalInterface(token);
+            deleteHalToken(token);
+            if (hInterface != nullptr) {
+                mHal = static_cast<HalInterface*>(hInterface.get());
+                mBase = new CONVERTER(mHal);
+            } else {
+                ALOGE("HpInterface: Cannot retrieve HAL interface from token.");
+                mBase = new BPINTERFACE(impl);
+            }
+        }
+    } else {
+        mBase = new BPINTERFACE(impl);
+    }
+}
+
+// ----------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_HALTOKEN_H
diff --git a/include/gui/Surface.h b/include/gui/Surface.h
index a3c2bfa..cfc68c6 100644
--- a/include/gui/Surface.h
+++ b/include/gui/Surface.h
@@ -155,6 +155,9 @@
             nsecs_t* outDisplayPresentTime, nsecs_t* outDisplayRetireTime,
             nsecs_t* outDequeueReadyTime, nsecs_t* outReleaseTime);
 
+    status_t getWideColorSupport(bool* supported);
+    status_t getHdrSupport(bool* supported);
+
     status_t getUniqueId(uint64_t* outId) const;
 
 protected:
@@ -215,6 +218,8 @@
     int dispatchEnableFrameTimestamps(va_list args);
     int dispatchGetCompositorTiming(va_list args);
     int dispatchGetFrameTimestamps(va_list args);
+    int dispatchGetWideColorSupport(va_list args);
+    int dispatchGetHdrSupport(va_list args);
 
 protected:
     virtual int dequeueBuffer(ANativeWindowBuffer** buffer, int* fenceFd);
diff --git a/include/gui/SurfaceComposerClient.h b/include/gui/SurfaceComposerClient.h
index 8302160..1e8cf76 100644
--- a/include/gui/SurfaceComposerClient.h
+++ b/include/gui/SurfaceComposerClient.h
@@ -21,7 +21,6 @@
 #include <sys/types.h>
 
 #include <binder/IBinder.h>
-#include <binder/IMemory.h>
 
 #include <utils/RefBase.h>
 #include <utils/Singleton.h>
@@ -148,7 +147,7 @@
     status_t    setTransparentRegionHint(const sp<IBinder>& id, const Region& transparent);
     status_t    setLayer(const sp<IBinder>& id, int32_t layer);
     status_t    setAlpha(const sp<IBinder>& id, float alpha=1.0f);
-    status_t    setMatrix(const sp<IBinder>& id, float dsdx, float dtdx, float dsdy, float dtdy);
+    status_t    setMatrix(const sp<IBinder>& id, float dsdx, float dtdx, float dtdy, float dsdy);
     status_t    setPosition(const sp<IBinder>& id, float x, float y);
     status_t    setSize(const sp<IBinder>& id, uint32_t w, uint32_t h);
     status_t    setCrop(const sp<IBinder>& id, const Rect& crop);
@@ -156,8 +155,11 @@
     status_t    setLayerStack(const sp<IBinder>& id, uint32_t layerStack);
     status_t    deferTransactionUntil(const sp<IBinder>& id,
             const sp<IBinder>& handle, uint64_t frameNumber);
+    status_t    deferTransactionUntil(const sp<IBinder>& id,
+            const sp<Surface>& handle, uint64_t frameNumber);
     status_t    reparentChildren(const sp<IBinder>& id,
             const sp<IBinder>& newParentHandle);
+    status_t    detachChildren(const sp<IBinder>& id);
     status_t    setOverrideScalingMode(const sp<IBinder>& id,
             int32_t overrideScalingMode);
     status_t    setGeometryAppliesWithResize(const sp<IBinder>& id);
diff --git a/include/gui/SurfaceControl.h b/include/gui/SurfaceControl.h
index 54c8fa9..8ee35bc 100644
--- a/include/gui/SurfaceControl.h
+++ b/include/gui/SurfaceControl.h
@@ -69,7 +69,7 @@
     status_t    setFlags(uint32_t flags, uint32_t mask);
     status_t    setTransparentRegionHint(const Region& transparent);
     status_t    setAlpha(float alpha=1.0f);
-    status_t    setMatrix(float dsdx, float dtdx, float dsdy, float dtdy);
+    status_t    setMatrix(float dsdx, float dtdx, float dtdy, float dsdy);
     status_t    setCrop(const Rect& crop);
     status_t    setFinalCrop(const Rect& crop);
 
@@ -80,11 +80,31 @@
     status_t    setGeometryAppliesWithResize();
 
     // Defers applying any changes made in this transaction until the Layer
-    // identified by handle reaches the given frameNumber
+    // identified by handle reaches the given frameNumber. If the Layer identified
+    // by handle is removed, then we will apply this transaction regardless of
+    // what frame number has been reached.
     status_t deferTransactionUntil(const sp<IBinder>& handle, uint64_t frameNumber);
+
+    // A variant of deferTransactionUntil which identifies the Layer we wait for by
+    // Surface instead of Handle. Useful for clients which may not have the
+    // SurfaceControl for some of their Surfaces. Otherwise behaves identically.
+    status_t deferTransactionUntil(const sp<Surface>& barrier, uint64_t frameNumber);
+
     // Reparents all children of this layer to the new parent handle.
     status_t reparentChildren(const sp<IBinder>& newParentHandle);
 
+    // Detaches all child surfaces (and their children recursively)
+    // from their SurfaceControl.
+    // The child SurfaceControl's will not throw exceptions or return errors,
+    // but transactions will have no effect.
+    // The child surfaces will continue to follow their parent surfaces,
+    // and remain eligible for rendering, but their relative state will be
+    // frozen. We use this in the WindowManager, in app shutdown/relaunch
+    // scenarios, where the app would otherwise clean up its child Surfaces.
+    // Sometimes the WindowManager needs to extend their lifetime slightly
+    // in order to perform an exit animation or prevent flicker.
+    status_t detachChildren();
+
     // Set an override scaling mode as documented in <system/window.h>
     // the override scaling mode will take precedence over any client
     // specified scaling mode. -1 will clear the override scaling mode.
diff --git a/include/media/cas/CasAPI.h b/include/media/cas/CasAPI.h
new file mode 100644
index 0000000..0e88019
--- /dev/null
+++ b/include/media/cas/CasAPI.h
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef CAS_API_H_
+#define CAS_API_H_
+
+#include <vector>
+#include <utils/String8.h>
+
+//  Loadable CasPlugin shared libraries should define the entry points
+//  as shown below:
+//
+//  extern "C" {
+//      extern android::CasFactory *createCasFactory();
+//      extern android::DescramblerFactory *createDescramblerFactory();
+//  }
+
+namespace android {
+
+struct CasPlugin;
+
+struct CasPluginDescriptor {
+    int32_t CA_system_id;
+    String8 name;
+};
+
+typedef std::vector<uint8_t> CasData;
+typedef std::vector<uint8_t> CasSessionId;
+typedef std::vector<uint8_t> CasEmm;
+typedef std::vector<uint8_t> CasEcm;
+typedef void (*CasPluginCallback)(
+        void *appData,
+        int32_t event,
+        int32_t arg,
+        uint8_t *data,
+        size_t size);
+
+struct CasFactory {
+    CasFactory() {}
+    virtual ~CasFactory() {}
+
+    // Determine if the plugin can handle the CA scheme identified by CA_system_id.
+    virtual bool isSystemIdSupported(
+            int32_t CA_system_id) const = 0;
+
+    // Get a list of the CA schemes supported by the plugin.
+    virtual status_t queryPlugins(
+            std::vector<CasPluginDescriptor> *descriptors) const = 0;
+
+    // Construct a new instance of a CasPlugin given a CA_system_id
+    virtual status_t createPlugin(
+            int32_t CA_system_id,
+            uint64_t appData,
+            CasPluginCallback callback,
+            CasPlugin **plugin) = 0;
+
+private:
+    CasFactory(const CasFactory &);
+    CasFactory &operator=(const CasFactory &); /* NOLINT */
+};
+
+struct CasPlugin {
+    CasPlugin() {}
+    virtual ~CasPlugin() {}
+
+    // Provide the CA private data from a CA_descriptor in the conditional
+    // access table to a CasPlugin.
+    virtual status_t setPrivateData(
+            const CasData &privateData) = 0;
+
+    // Open a session for descrambling a program. The session will receive the
+    // ECM stream corresponding to the CA_PID for the program.
+    virtual status_t openSession(
+            uint16_t program_number,
+            CasSessionId *sessionId) = 0;
+
+    // Open a session for descrambling an elementary stream inside a program.
+    // The session will receive the ECM stream corresponding to the CA_PID for
+    // the stream.
+    virtual status_t openSession(
+            uint16_t program_number,
+            uint16_t elementary_PID,
+            CasSessionId *sessionId) = 0;
+
+    // Close a previously opened session.
+    virtual status_t closeSession(
+            const CasSessionId &sessionId) = 0;
+
+    // Provide the CA private data from a CA_descriptor in the program map
+    // table to a CasPlugin.
+    virtual status_t setSessionPrivateData(
+            const CasSessionId &sessionId,
+            const CasData &privateData) = 0;
+
+    // Process an ECM from the ECM stream for this session’s elementary stream.
+    virtual status_t processEcm(
+            const CasSessionId &sessionId,
+            const CasEcm &ecm) = 0;
+
+    // Process an in-band EMM from the EMM stream.
+    virtual status_t processEmm(
+            const CasEmm &emm) = 0;
+
+    // Deliver an event to the CasPlugin. The format of the event is specific
+    // to the CA scheme and is opaque to the framework.
+    virtual status_t sendEvent(
+            int32_t event,
+            int32_t arg,
+            const CasData &eventData) = 0;
+
+    // Native implementation of the MediaCas Java API provision method.
+    virtual status_t provision(
+            const String8 &provisionString) = 0;
+
+    // Native implementation of the MediaCas Java API refreshEntitlements method
+    virtual status_t refreshEntitlements(
+            int32_t refreshType,
+            const CasData &refreshData) = 0;
+
+private:
+    CasPlugin(const CasPlugin &);
+    CasPlugin &operator=(const CasPlugin &); /* NOLINT */
+};
+
+extern "C" {
+    extern android::CasFactory *createCasFactory();
+}
+
+} // namespace android
+
+#endif // CAS_API_H_
diff --git a/include/media/cas/DescramblerAPI.h b/include/media/cas/DescramblerAPI.h
new file mode 100644
index 0000000..0a51952
--- /dev/null
+++ b/include/media/cas/DescramblerAPI.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef DESCRAMBLER_API_H_
+#define DESCRAMBLER_API_H_
+
+#include <media/stagefright/MediaErrors.h>
+#include <media/cas/CasAPI.h>
+
+namespace android {
+
+struct AString;
+struct DescramblerPlugin;
+
+struct DescramblerFactory {
+    DescramblerFactory() {}
+    virtual ~DescramblerFactory() {}
+
+    // Determine if the plugin can handle the CA scheme identified by CA_system_id.
+    virtual bool isSystemIdSupported(
+            int32_t CA_system_id) const = 0;
+
+    // Construct a new instance of a DescramblerPlugin given a CA_system_id
+    virtual status_t createPlugin(
+            int32_t CA_system_id, DescramblerPlugin **plugin) = 0;
+
+private:
+    DescramblerFactory(const DescramblerFactory &);
+    DescramblerFactory &operator=(const DescramblerFactory &);
+};
+
+struct DescramblerPlugin {
+    enum ScramblingControl {
+        kScrambling_Unscrambled = 0,
+        kScrambling_Reserved    = 1,
+        kScrambling_EvenKey     = 2,
+        kScrambling_OddKey      = 3,
+    };
+
+    struct SubSample {
+        uint32_t mNumBytesOfClearData;
+        uint32_t mNumBytesOfEncryptedData;
+    };
+
+    DescramblerPlugin() {}
+    virtual ~DescramblerPlugin() {}
+
+    // If this method returns false, a non-secure decoder will be used to
+    // decode the data after decryption. The decrypt API below will have
+    // to support insecure decryption of the data (secure = false) for
+    // media data of the given mime type.
+    virtual bool requiresSecureDecoderComponent(const char *mime) const = 0;
+
+    // A MediaCas session may be associated with a MediaCrypto session.  The
+    // associated MediaCas session is used to load decryption keys
+    // into the crypto/cas plugin.  The keys are then referenced by key-id
+    // in the 'key' parameter to the decrypt() method.
+    // Should return NO_ERROR on success, ERROR_DRM_SESSION_NOT_OPENED if
+    // the session is not opened and a code from MediaErrors.h otherwise.
+    virtual status_t setMediaCasSession(const CasSessionId& sessionId) = 0;
+
+    // If the error returned falls into the range
+    // ERROR_DRM_VENDOR_MIN..ERROR_DRM_VENDOR_MAX, errorDetailMsg should be
+    // filled in with an appropriate string.
+    // At the java level these special errors will then trigger a
+    // MediaCodec.CryptoException that gives clients access to both
+    // the error code and the errorDetailMsg.
+    // Returns a non-negative result to indicate the number of bytes written
+    // to the dstPtr, or a negative result to indicate an error.
+    virtual ssize_t descramble(
+            bool secure,
+            ScramblingControl scramblingControl,
+            size_t numSubSamples,
+            const SubSample *subSamples,
+            const void *srcPtr,
+            int32_t srcOffset,
+            void *dstPtr,
+            int32_t dstOffset,
+            AString *errorDetailMsg) = 0;
+
+private:
+    DescramblerPlugin(const DescramblerPlugin &);
+    DescramblerPlugin &operator=(const DescramblerPlugin &);
+};
+
+}  // namespace android
+
+extern "C" {
+    extern android::DescramblerFactory *createDescramblerFactory();
+}
+
+#endif  // DESCRAMBLER_API_H_
diff --git a/include/private/binder/Static.h b/include/private/binder/Static.h
index d104646..3d10456 100644
--- a/include/private/binder/Static.h
+++ b/include/private/binder/Static.h
@@ -20,7 +20,6 @@
 #include <utils/threads.h>
 
 #include <binder/IBinder.h>
-#include <binder/IMemory.h>
 #include <binder/ProcessState.h>
 #include <binder/IPermissionController.h>
 #include <binder/IServiceManager.h>
diff --git a/include/private/gui/LayerState.h b/include/private/gui/LayerState.h
index 2a1801b..20f51a5 100644
--- a/include/private/gui/LayerState.h
+++ b/include/private/gui/LayerState.h
@@ -24,6 +24,7 @@
 
 #include <ui/Region.h>
 #include <ui/Rect.h>
+#include <gui/IGraphicBufferProducer.h>
 
 namespace android {
 
@@ -57,6 +58,7 @@
         eOverrideScalingModeChanged = 0x00000800,
         eGeometryAppliesWithResize  = 0x00001000,
         eReparentChildren           = 0x00002000,
+        eDetachChildren             = 0x00004000
     };
 
     layer_state_t()
@@ -77,8 +79,8 @@
             struct matrix22_t {
                 float   dsdx{0};
                 float   dtdx{0};
-                float   dsdy{0};
                 float   dtdy{0};
+                float   dsdy{0};
             };
             sp<IBinder>     surface;
             uint32_t        what;
@@ -95,10 +97,13 @@
             matrix22_t      matrix;
             Rect            crop;
             Rect            finalCrop;
-            sp<IBinder>     handle;
+            sp<IBinder>     barrierHandle;
             sp<IBinder>     reparentHandle;
             uint64_t        frameNumber;
             int32_t         overrideScalingMode;
+
+            sp<IGraphicBufferProducer> barrierGbp;
+
             // non POD must be last. see write/read
             Region          transparentRegion;
 };
diff --git a/libs/binder/Android.bp b/libs/binder/Android.bp
index 93b8684..2cb44eb 100644
--- a/libs/binder/Android.bp
+++ b/libs/binder/Android.bp
@@ -34,6 +34,7 @@
         "IResultReceiver.cpp",
         "IServiceManager.cpp",
         "IShellCallback.cpp",
+        "HalToken.cpp",
         "MemoryBase.cpp",
         "MemoryDealer.cpp",
         "MemoryHeapBase.cpp",
@@ -65,6 +66,8 @@
         "liblog",
         "libcutils",
         "libutils",
+        "libhidlbase",
+        "android.hidl.token@1.0",
     ],
     export_shared_lib_headers: [
         "libbase",
diff --git a/libs/binder/HalToken.cpp b/libs/binder/HalToken.cpp
new file mode 100644
index 0000000..6e71a52
--- /dev/null
+++ b/libs/binder/HalToken.cpp
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2005 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "HalToken"
+
+#include <utils/Log.h>
+#include <binder/HalToken.h>
+
+#include <android/hidl/token/1.0/ITokenManager.h>
+
+namespace android {
+
+using ::android::hidl::token::V1_0::ITokenManager;
+
+sp<ITokenManager> gTokenManager = nullptr;
+
+ITokenManager* getTokenManager() {
+    if (gTokenManager != nullptr) {
+        return gTokenManager.get();
+    }
+    gTokenManager = ITokenManager::getService();
+    if (gTokenManager == nullptr) {
+        ALOGE("Cannot retrieve TokenManager.");
+    }
+    return gTokenManager.get();
+}
+
+sp<HInterface> retrieveHalInterface(const HalToken& token) {
+    auto transaction = getTokenManager()->get(token);
+    if (!transaction.isOk()) {
+        ALOGE("getHalInterface: Cannot obtain interface from token.");
+        return nullptr;
+    }
+    return static_cast<sp<HInterface> >(transaction);
+}
+
+bool createHalToken(const sp<HInterface>& interface, HalToken* token) {
+    auto transaction = getTokenManager()->createToken(interface);
+    if (!transaction.isOk()) {
+        ALOGE("createHalToken: Cannot create token from interface.");
+        return false;
+    }
+    *token = static_cast<HalToken>(transaction);
+    return true;
+}
+
+bool deleteHalToken(const HalToken& token) {
+    auto transaction = getTokenManager()->unregister(token);
+    if (!transaction.isOk()) {
+        ALOGE("deleteHalToken: Cannot unregister hal token.");
+        return false;
+    }
+    return true;
+}
+
+}; // namespace android
+
diff --git a/libs/binder/IActivityManager.cpp b/libs/binder/IActivityManager.cpp
index 87b295a..50a8b28 100644
--- a/libs/binder/IActivityManager.cpp
+++ b/libs/binder/IActivityManager.cpp
@@ -36,6 +36,7 @@
     virtual int openContentUri(const String16& stringUri)
     {
         Parcel data, reply;
+        data.writeInterfaceToken(IActivityManager::getInterfaceDescriptor());
         data.writeString16(stringUri);
         status_t ret = remote()->transact(OPEN_CONTENT_URI_TRANSACTION, data, & reply);
         int fd = -1;
diff --git a/libs/binder/IMemory.cpp b/libs/binder/IMemory.cpp
index f4e0a60..5c1a4f4 100644
--- a/libs/binder/IMemory.cpp
+++ b/libs/binder/IMemory.cpp
@@ -17,6 +17,8 @@
 #define LOG_TAG "IMemory"
 
 #include <atomic>
+#include <stdatomic.h>
+
 #include <fcntl.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -28,6 +30,7 @@
 #include <binder/IMemory.h>
 #include <binder/Parcel.h>
 #include <log/log.h>
+
 #include <utils/CallStack.h>
 #include <utils/KeyedVector.h>
 #include <utils/threads.h>
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index ddf1072..8f9c38a 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -107,6 +107,7 @@
         "libGLESv2",
         "libui",
         "libutils",
+        "libnativewindow",
         "liblog",
     ],
 
diff --git a/libs/gui/BufferQueueCore.cpp b/libs/gui/BufferQueueCore.cpp
index 6e6cce2..9e3fecb 100644
--- a/libs/gui/BufferQueueCore.cpp
+++ b/libs/gui/BufferQueueCore.cpp
@@ -29,6 +29,7 @@
 #include <inttypes.h>
 
 #include <cutils/properties.h>
+#include <cutils/atomic.h>
 
 #include <gui/BufferItem.h>
 #include <gui/BufferQueueCore.h>
diff --git a/libs/gui/ConsumerBase.cpp b/libs/gui/ConsumerBase.cpp
index c26de66..8acdfed 100644
--- a/libs/gui/ConsumerBase.cpp
+++ b/libs/gui/ConsumerBase.cpp
@@ -27,6 +27,8 @@
 
 #include <hardware/hardware.h>
 
+#include <cutils/atomic.h>
+
 #include <gui/BufferItem.h>
 #include <gui/IGraphicBufferAlloc.h>
 #include <gui/ISurfaceComposer.h>
diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index 06d1261..4d2692f 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -21,7 +21,6 @@
 #include <sys/types.h>
 
 #include <binder/Parcel.h>
-#include <binder/IMemory.h>
 #include <binder/IPCThreadState.h>
 #include <binder/IServiceManager.h>
 
diff --git a/libs/gui/ISurfaceComposerClient.cpp b/libs/gui/ISurfaceComposerClient.cpp
index 5a3fa04..db8a517 100644
--- a/libs/gui/ISurfaceComposerClient.cpp
+++ b/libs/gui/ISurfaceComposerClient.cpp
@@ -22,7 +22,6 @@
 #include <sys/types.h>
 
 #include <binder/Parcel.h>
-#include <binder/IMemory.h>
 #include <binder/IPCThreadState.h>
 #include <binder/IServiceManager.h>
 
diff --git a/libs/gui/LayerState.cpp b/libs/gui/LayerState.cpp
index bb552aa..2461cba 100644
--- a/libs/gui/LayerState.cpp
+++ b/libs/gui/LayerState.cpp
@@ -39,10 +39,11 @@
             output.writeInplace(sizeof(layer_state_t::matrix22_t))) = matrix;
     output.write(crop);
     output.write(finalCrop);
-    output.writeStrongBinder(handle);
+    output.writeStrongBinder(barrierHandle);
     output.writeStrongBinder(reparentHandle);
     output.writeUint64(frameNumber);
     output.writeInt32(overrideScalingMode);
+    output.writeStrongBinder(IInterface::asBinder(barrierGbp));
     output.write(transparentRegion);
     return NO_ERROR;
 }
@@ -68,10 +69,12 @@
     }
     input.read(crop);
     input.read(finalCrop);
-    handle = input.readStrongBinder();
+    barrierHandle = input.readStrongBinder();
     reparentHandle = input.readStrongBinder();
     frameNumber = input.readUint64();
     overrideScalingMode = input.readInt32();
+    barrierGbp =
+        interface_cast<IGraphicBufferProducer>(input.readStrongBinder());
     input.read(transparentRegion);
     return NO_ERROR;
 }
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index efb1524..ad1984a 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -26,9 +26,10 @@
 #include <utils/Trace.h>
 #include <utils/NativeHandle.h>
 
-#include <ui/Fence.h>
-#include <ui/Region.h>
 #include <ui/DisplayStatInfo.h>
+#include <ui/Fence.h>
+#include <ui/HdrCapabilities.h>
+#include <ui/Region.h>
 
 #include <gui/BufferItem.h>
 #include <gui/IProducerListener.h>
@@ -305,6 +306,51 @@
     return NO_ERROR;
 }
 
+status_t Surface::getWideColorSupport(bool* supported) {
+    ATRACE_CALL();
+
+    sp<IBinder> display(
+        composerService()->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+    Vector<android_color_mode_t> colorModes;
+    status_t err =
+        composerService()->getDisplayColorModes(display, &colorModes);
+
+    if (err)
+        return err;
+
+    *supported = false;
+    for (android_color_mode_t colorMode : colorModes) {
+        switch (colorMode) {
+            case HAL_COLOR_MODE_DISPLAY_P3:
+            case HAL_COLOR_MODE_ADOBE_RGB:
+            case HAL_COLOR_MODE_DCI_P3:
+                *supported = true;
+                break;
+            default:
+                break;
+        }
+    }
+
+    return NO_ERROR;
+}
+
+status_t Surface::getHdrSupport(bool* supported) {
+    ATRACE_CALL();
+
+    sp<IBinder> display(
+        composerService()->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+    HdrCapabilities hdrCapabilities;
+    status_t err =
+        composerService()->getHdrCapabilities(display, &hdrCapabilities);
+
+    if (err)
+        return err;
+
+    *supported = !hdrCapabilities.getSupportedHdrTypes().empty();
+
+    return NO_ERROR;
+}
+
 int Surface::hook_setSwapInterval(ANativeWindow* window, int interval) {
     Surface* c = getSelf(window);
     return c->setSwapInterval(interval);
@@ -880,6 +926,12 @@
     case NATIVE_WINDOW_GET_FRAME_TIMESTAMPS:
         res = dispatchGetFrameTimestamps(args);
         break;
+    case NATIVE_WINDOW_GET_WIDE_COLOR_SUPPORT:
+        res = dispatchGetWideColorSupport(args);
+        break;
+    case NATIVE_WINDOW_GET_HDR_SUPPORT:
+        res = dispatchGetHdrSupport(args);
+        break;
     default:
         res = NAME_NOT_FOUND;
         break;
@@ -1044,6 +1096,16 @@
             outDisplayRetireTime, outDequeueReadyTime, outReleaseTime);
 }
 
+int Surface::dispatchGetWideColorSupport(va_list args) {
+    bool* outSupport = va_arg(args, bool*);
+    return getWideColorSupport(outSupport);
+}
+
+int Surface::dispatchGetHdrSupport(va_list args) {
+    bool* outSupport = va_arg(args, bool*);
+    return getHdrSupport(outSupport);
+}
+
 int Surface::connect(int api) {
     static sp<IProducerListener> listener = new DummyProducerListener();
     return connect(api, listener);
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index ae81c8f..088933a 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -26,7 +26,6 @@
 #include <utils/String8.h>
 #include <utils/threads.h>
 
-#include <binder/IMemory.h>
 #include <binder/IServiceManager.h>
 
 #include <system/graphics.h>
@@ -38,6 +37,7 @@
 #include <gui/IGraphicBufferProducer.h>
 #include <gui/ISurfaceComposer.h>
 #include <gui/ISurfaceComposerClient.h>
+#include <gui/Surface.h>
 #include <gui/SurfaceComposerClient.h>
 
 #include <private/gui/ComposerService.h>
@@ -157,7 +157,7 @@
     status_t setAlpha(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
             float alpha);
     status_t setMatrix(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
-            float dsdx, float dtdx, float dsdy, float dtdy);
+            float dsdx, float dtdx, float dtdy, float dsdy);
     status_t setOrientation(int orientation);
     status_t setCrop(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
             const Rect& crop);
@@ -168,9 +168,14 @@
     status_t deferTransactionUntil(const sp<SurfaceComposerClient>& client,
             const sp<IBinder>& id, const sp<IBinder>& handle,
             uint64_t frameNumber);
+    status_t deferTransactionUntil(const sp<SurfaceComposerClient>& client,
+            const sp<IBinder>& id, const sp<Surface>& barrierSurface,
+            uint64_t frameNumber);
     status_t reparentChildren(const sp<SurfaceComposerClient>& client,
             const sp<IBinder>& id,
             const sp<IBinder>& newParentHandle);
+    status_t detachChildren(const sp<SurfaceComposerClient>& client,
+            const sp<IBinder>& id);
     status_t setOverrideScalingMode(const sp<SurfaceComposerClient>& client,
             const sp<IBinder>& id, int32_t overrideScalingMode);
     status_t setGeometryAppliesWithResize(const sp<SurfaceComposerClient>& client,
@@ -392,7 +397,7 @@
 
 status_t Composer::setMatrix(const sp<SurfaceComposerClient>& client,
         const sp<IBinder>& id, float dsdx, float dtdx,
-        float dsdy, float dtdy) {
+        float dtdy, float dsdy) {
     Mutex::Autolock _l(mLock);
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
@@ -439,7 +444,21 @@
         return BAD_INDEX;
     }
     s->what |= layer_state_t::eDeferTransaction;
-    s->handle = handle;
+    s->barrierHandle = handle;
+    s->frameNumber = frameNumber;
+    return NO_ERROR;
+}
+
+status_t Composer::deferTransactionUntil(
+        const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
+        const sp<Surface>& barrierSurface, uint64_t frameNumber) {
+    Mutex::Autolock lock(mLock);
+    layer_state_t* s = getLayerStateLocked(client, id);
+    if (!s) {
+        return BAD_INDEX;
+    }
+    s->what |= layer_state_t::eDeferTransaction;
+    s->barrierGbp = barrierSurface->getIGraphicBufferProducer();
     s->frameNumber = frameNumber;
     return NO_ERROR;
 }
@@ -458,6 +477,18 @@
     return NO_ERROR;
 }
 
+status_t Composer::detachChildren(
+        const sp<SurfaceComposerClient>& client,
+        const sp<IBinder>& id) {
+    Mutex::Autolock lock(mLock);
+    layer_state_t* s = getLayerStateLocked(client, id);
+    if (!s) {
+        return BAD_INDEX;
+    }
+    s->what |= layer_state_t::eDetachChildren;
+    return NO_ERROR;
+}
+
 status_t Composer::setOverrideScalingMode(
         const sp<SurfaceComposerClient>& client,
         const sp<IBinder>& id, int32_t overrideScalingMode) {
@@ -768,8 +799,8 @@
 }
 
 status_t SurfaceComposerClient::setMatrix(const sp<IBinder>& id, float dsdx, float dtdx,
-        float dsdy, float dtdy) {
-    return getComposer().setMatrix(this, id, dsdx, dtdx, dsdy, dtdy);
+        float dtdy, float dsdy) {
+    return getComposer().setMatrix(this, id, dsdx, dtdx, dtdy, dsdy);
 }
 
 status_t SurfaceComposerClient::deferTransactionUntil(const sp<IBinder>& id,
@@ -777,11 +808,20 @@
     return getComposer().deferTransactionUntil(this, id, handle, frameNumber);
 }
 
+status_t SurfaceComposerClient::deferTransactionUntil(const sp<IBinder>& id,
+        const sp<Surface>& barrierSurface, uint64_t frameNumber) {
+    return getComposer().deferTransactionUntil(this, id, barrierSurface, frameNumber);
+}
+
 status_t SurfaceComposerClient::reparentChildren(const sp<IBinder>& id,
         const sp<IBinder>& newParentHandle) {
     return getComposer().reparentChildren(this, id, newParentHandle);
 }
 
+status_t SurfaceComposerClient::detachChildren(const sp<IBinder>& id) {
+    return getComposer().detachChildren(this, id);
+}
+
 status_t SurfaceComposerClient::setOverrideScalingMode(
         const sp<IBinder>& id, int32_t overrideScalingMode) {
     return getComposer().setOverrideScalingMode(
diff --git a/libs/gui/SurfaceControl.cpp b/libs/gui/SurfaceControl.cpp
index 0362216..1e69379 100644
--- a/libs/gui/SurfaceControl.cpp
+++ b/libs/gui/SurfaceControl.cpp
@@ -147,10 +147,10 @@
     if (err < 0) return err;
     return mClient->setAlpha(mHandle, alpha);
 }
-status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dsdy, float dtdy) {
+status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dtdy, float dsdy) {
     status_t err = validate();
     if (err < 0) return err;
-    return mClient->setMatrix(mHandle, dsdx, dtdx, dsdy, dtdy);
+    return mClient->setMatrix(mHandle, dsdx, dtdx, dtdy, dsdy);
 }
 status_t SurfaceControl::setCrop(const Rect& crop) {
     status_t err = validate();
@@ -170,12 +170,25 @@
     return mClient->deferTransactionUntil(mHandle, handle, frameNumber);
 }
 
+status_t SurfaceControl::deferTransactionUntil(const sp<Surface>& handle,
+        uint64_t frameNumber) {
+    status_t err = validate();
+    if (err < 0) return err;
+    return mClient->deferTransactionUntil(mHandle, handle, frameNumber);
+}
+
 status_t SurfaceControl::reparentChildren(const sp<IBinder>& newParentHandle) {
     status_t err = validate();
     if (err < 0) return err;
     return mClient->reparentChildren(mHandle, newParentHandle);
 }
 
+status_t SurfaceControl::detachChildren() {
+    status_t err = validate();
+    if (err < 0) return err;
+    return mClient->detachChildren(mHandle);
+}
+
 status_t SurfaceControl::setOverrideScalingMode(int32_t overrideScalingMode) {
     status_t err = validate();
     if (err < 0) return err;
diff --git a/libs/gui/tests/Android.bp b/libs/gui/tests/Android.bp
index 092d597..5944110 100644
--- a/libs/gui/tests/Android.bp
+++ b/libs/gui/tests/Android.bp
@@ -15,7 +15,6 @@
         "IGraphicBufferProducer_test.cpp",
         "MultiTextureConsumer_test.cpp",
         "Sensor_test.cpp",
-        "SRGB_test.cpp",
         "StreamSplitter_test.cpp",
         "SurfaceTextureClient_test.cpp",
         "SurfaceTextureFBO_test.cpp",
@@ -37,5 +36,6 @@
         "libgui",
         "libui",
         "libutils",
+        "libnativewindow"
     ],
 }
diff --git a/libs/gui/tests/SRGB_test.cpp b/libs/gui/tests/SRGB_test.cpp
deleted file mode 100644
index c2640cd..0000000
--- a/libs/gui/tests/SRGB_test.cpp
+++ /dev/null
@@ -1,486 +0,0 @@
-/*
- * Copyright 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "SRGB_test"
-//#define LOG_NDEBUG 0
-
-// Ignore for this file because it flags every instance of
-// ASSERT_EQ(GL_NO_ERROR, glGetError());
-#pragma clang diagnostic ignored "-Wsign-compare"
-
-#include "GLTest.h"
-
-#include <math.h>
-
-#include <gui/CpuConsumer.h>
-#include <gui/Surface.h>
-#include <gui/SurfaceComposerClient.h>
-
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-#include <GLES3/gl3.h>
-
-#include <android/native_window.h>
-
-#include <gtest/gtest.h>
-
-namespace android {
-
-class SRGBTest : public ::testing::Test {
-protected:
-    // Class constants
-    enum {
-        DISPLAY_WIDTH = 512,
-        DISPLAY_HEIGHT = 512,
-        PIXEL_SIZE = 4, // bytes or components
-        DISPLAY_SIZE = DISPLAY_WIDTH * DISPLAY_HEIGHT * PIXEL_SIZE,
-        ALPHA_VALUE = 223, // should be in [0, 255]
-        TOLERANCE = 1,
-    };
-    static const char SHOW_DEBUG_STRING[];
-
-    SRGBTest() :
-            mInputSurface(), mCpuConsumer(), mLockedBuffer(),
-            mEglDisplay(EGL_NO_DISPLAY), mEglConfig(),
-            mEglContext(EGL_NO_CONTEXT), mEglSurface(EGL_NO_SURFACE),
-            mComposerClient(), mSurfaceControl(), mOutputSurface() {
-    }
-
-    virtual ~SRGBTest() {
-        if (mEglDisplay != EGL_NO_DISPLAY) {
-            if (mEglSurface != EGL_NO_SURFACE) {
-                eglDestroySurface(mEglDisplay, mEglSurface);
-            }
-            if (mEglContext != EGL_NO_CONTEXT) {
-                eglDestroyContext(mEglDisplay, mEglContext);
-            }
-            eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE,
-                    EGL_NO_CONTEXT);
-            eglTerminate(mEglDisplay);
-        }
-    }
-
-    virtual void SetUp() {
-        sp<IGraphicBufferProducer> producer;
-        sp<IGraphicBufferConsumer> consumer;
-        BufferQueue::createBufferQueue(&producer, &consumer);
-        ASSERT_EQ(NO_ERROR, consumer->setDefaultBufferSize(
-                DISPLAY_WIDTH, DISPLAY_HEIGHT));
-        mCpuConsumer = new CpuConsumer(consumer, 1);
-        String8 name("CpuConsumer_for_SRGBTest");
-        mCpuConsumer->setName(name);
-        mInputSurface = new Surface(producer);
-
-        ASSERT_NO_FATAL_FAILURE(createEGLSurface(mInputSurface.get()));
-        ASSERT_NO_FATAL_FAILURE(createDebugSurface());
-    }
-
-    virtual void TearDown() {
-        ASSERT_NO_FATAL_FAILURE(copyToDebugSurface());
-        ASSERT_TRUE(mLockedBuffer.data != NULL);
-        ASSERT_EQ(NO_ERROR, mCpuConsumer->unlockBuffer(mLockedBuffer));
-    }
-
-    static float linearToSRGB(float l) {
-        if (l <= 0.0031308f) {
-            return l * 12.92f;
-        } else {
-            return 1.055f * pow(l, (1 / 2.4f)) - 0.055f;
-        }
-    }
-
-    static float srgbToLinear(float s) {
-        if (s <= 0.04045) {
-            return s / 12.92f;
-        } else {
-            return pow(((s + 0.055f) / 1.055f), 2.4f);
-        }
-    }
-
-    static uint8_t srgbToLinear(uint8_t u) {
-        float f = u / 255.0f;
-        return static_cast<uint8_t>(srgbToLinear(f) * 255.0f + 0.5f);
-    }
-
-    void fillTexture(bool writeAsSRGB) {
-        uint8_t* textureData = new uint8_t[DISPLAY_SIZE];
-
-        for (int y = 0; y < DISPLAY_HEIGHT; ++y) {
-            for (int x = 0; x < DISPLAY_WIDTH; ++x) {
-                float realValue = static_cast<float>(x) / (DISPLAY_WIDTH - 1);
-                realValue *= ALPHA_VALUE / 255.0f; // Premultiply by alpha
-                if (writeAsSRGB) {
-                    realValue = linearToSRGB(realValue);
-                }
-
-                int offset = (y * DISPLAY_WIDTH + x) * PIXEL_SIZE;
-                for (int c = 0; c < 3; ++c) {
-                    uint8_t intValue = static_cast<uint8_t>(
-                            realValue * 255.0f + 0.5f);
-                    textureData[offset + c] = intValue;
-                }
-                textureData[offset + 3] = ALPHA_VALUE;
-            }
-        }
-
-        glTexImage2D(GL_TEXTURE_2D, 0, writeAsSRGB ? GL_SRGB8_ALPHA8 : GL_RGBA8,
-                DISPLAY_WIDTH, DISPLAY_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE,
-                textureData);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-
-        delete[] textureData;
-    }
-
-    void initShaders() {
-        static const char vertexSource[] =
-            "attribute vec4 vPosition;\n"
-            "varying vec2 texCoords;\n"
-            "void main() {\n"
-            "  texCoords = 0.5 * (vPosition.xy + vec2(1.0, 1.0));\n"
-            "  gl_Position = vPosition;\n"
-            "}\n";
-
-        static const char fragmentSource[] =
-            "precision mediump float;\n"
-            "uniform sampler2D texSampler;\n"
-            "varying vec2 texCoords;\n"
-            "void main() {\n"
-            "  gl_FragColor = texture2D(texSampler, texCoords);\n"
-            "}\n";
-
-        GLuint program;
-        {
-            SCOPED_TRACE("Creating shader program");
-            ASSERT_NO_FATAL_FAILURE(GLTest::createProgram(
-                    vertexSource, fragmentSource, &program));
-        }
-
-        GLint positionHandle = glGetAttribLocation(program, "vPosition");
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        ASSERT_NE(-1, positionHandle);
-
-        GLint samplerHandle = glGetUniformLocation(program, "texSampler");
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        ASSERT_NE(-1, samplerHandle);
-
-        static const GLfloat vertices[] = {
-            -1.0f, 1.0f,
-            -1.0f, -1.0f,
-            1.0f, -1.0f,
-            1.0f, 1.0f,
-        };
-
-        glVertexAttribPointer(positionHandle, 2, GL_FLOAT, GL_FALSE, 0, vertices);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glEnableVertexAttribArray(positionHandle);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-
-        glUseProgram(program);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glUniform1i(samplerHandle, 0);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-
-        GLuint textureHandle;
-        glGenTextures(1, &textureHandle);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glBindTexture(GL_TEXTURE_2D, textureHandle);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-    }
-
-    void drawTexture(bool asSRGB, GLint x, GLint y, GLsizei width,
-            GLsizei height) {
-        ASSERT_NO_FATAL_FAILURE(fillTexture(asSRGB));
-        glViewport(x, y, width, height);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-    }
-
-    void checkLockedBuffer(PixelFormat format, android_dataspace dataSpace) {
-        ASSERT_EQ(mLockedBuffer.format, format);
-        ASSERT_EQ(mLockedBuffer.width, DISPLAY_WIDTH);
-        ASSERT_EQ(mLockedBuffer.height, DISPLAY_HEIGHT);
-        ASSERT_EQ(mLockedBuffer.dataSpace, dataSpace);
-    }
-
-    static bool withinTolerance(int a, int b) {
-        int diff = a - b;
-        return diff >= 0 ? diff <= TOLERANCE : -diff <= TOLERANCE;
-    }
-
-    // Primary producer and consumer
-    sp<Surface> mInputSurface;
-    sp<CpuConsumer> mCpuConsumer;
-    CpuConsumer::LockedBuffer mLockedBuffer;
-
-    EGLDisplay mEglDisplay;
-    EGLConfig mEglConfig;
-    EGLContext mEglContext;
-    EGLSurface mEglSurface;
-
-    // Auxiliary display output
-    sp<SurfaceComposerClient> mComposerClient;
-    sp<SurfaceControl> mSurfaceControl;
-    sp<Surface> mOutputSurface;
-
-private:
-    void createEGLSurface(Surface* inputSurface) {
-        mEglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-        ASSERT_NE(EGL_NO_DISPLAY, mEglDisplay);
-
-        EXPECT_TRUE(eglInitialize(mEglDisplay, NULL, NULL));
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-        static const EGLint configAttribs[] = {
-            EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
-            EGL_RENDERABLE_TYPE, EGL_OPENGL_ES3_BIT_KHR,
-            EGL_RED_SIZE, 8,
-            EGL_GREEN_SIZE, 8,
-            EGL_BLUE_SIZE, 8,
-            EGL_ALPHA_SIZE, 8,
-            EGL_NONE };
-
-        EGLint numConfigs = 0;
-        EXPECT_TRUE(eglChooseConfig(mEglDisplay, configAttribs, &mEglConfig, 1,
-                &numConfigs));
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-        ASSERT_GT(numConfigs, 0);
-
-        static const EGLint contextAttribs[] = {
-            EGL_CONTEXT_CLIENT_VERSION, 3,
-            EGL_NONE } ;
-
-        mEglContext = eglCreateContext(mEglDisplay, mEglConfig, EGL_NO_CONTEXT,
-                contextAttribs);
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-        ASSERT_NE(EGL_NO_CONTEXT, mEglContext);
-
-        mEglSurface = eglCreateWindowSurface(mEglDisplay, mEglConfig,
-                inputSurface, NULL);
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-        ASSERT_NE(EGL_NO_SURFACE, mEglSurface);
-
-        EXPECT_TRUE(eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface,
-                mEglContext));
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-    }
-
-    void createDebugSurface() {
-        if (getenv(SHOW_DEBUG_STRING) == NULL) return;
-
-        mComposerClient = new SurfaceComposerClient;
-        ASSERT_EQ(NO_ERROR, mComposerClient->initCheck());
-
-        mSurfaceControl = mComposerClient->createSurface(
-                String8("SRGBTest Surface"), DISPLAY_WIDTH, DISPLAY_HEIGHT,
-                PIXEL_FORMAT_RGBA_8888);
-
-        ASSERT_TRUE(mSurfaceControl != NULL);
-        ASSERT_TRUE(mSurfaceControl->isValid());
-
-        SurfaceComposerClient::openGlobalTransaction();
-        ASSERT_EQ(NO_ERROR, mSurfaceControl->setLayer(0x7FFFFFFF));
-        ASSERT_EQ(NO_ERROR, mSurfaceControl->show());
-        SurfaceComposerClient::closeGlobalTransaction();
-
-        ANativeWindow_Buffer outBuffer;
-        ARect inOutDirtyBounds;
-        mOutputSurface = mSurfaceControl->getSurface();
-        mOutputSurface->lock(&outBuffer, &inOutDirtyBounds);
-        uint8_t* bytePointer = reinterpret_cast<uint8_t*>(outBuffer.bits);
-        for (int y = 0; y < outBuffer.height; ++y) {
-            int rowOffset = y * outBuffer.stride; // pixels
-            for (int x = 0; x < outBuffer.width; ++x) {
-                int colOffset = (rowOffset + x) * PIXEL_SIZE; // bytes
-                for (int c = 0; c < PIXEL_SIZE; ++c) {
-                    int offset = colOffset + c;
-                    bytePointer[offset] = ((c + 1) * 56) - 1;
-                }
-            }
-        }
-        mOutputSurface->unlockAndPost();
-    }
-
-    void copyToDebugSurface() {
-        if (!mOutputSurface.get()) return;
-
-        size_t bufferSize = mLockedBuffer.height * mLockedBuffer.stride *
-                PIXEL_SIZE;
-
-        ANativeWindow_Buffer outBuffer;
-        ARect outBufferBounds;
-        mOutputSurface->lock(&outBuffer, &outBufferBounds);
-        ASSERT_EQ(mLockedBuffer.width, static_cast<uint32_t>(outBuffer.width));
-        ASSERT_EQ(mLockedBuffer.height, static_cast<uint32_t>(outBuffer.height));
-        ASSERT_EQ(mLockedBuffer.stride, static_cast<uint32_t>(outBuffer.stride));
-
-        if (mLockedBuffer.format == outBuffer.format) {
-            memcpy(outBuffer.bits, mLockedBuffer.data, bufferSize);
-        } else {
-            ASSERT_EQ(mLockedBuffer.format, PIXEL_FORMAT_RGBA_8888);
-            ASSERT_EQ(mLockedBuffer.dataSpace, HAL_DATASPACE_SRGB);
-            ASSERT_EQ(outBuffer.format, PIXEL_FORMAT_RGBA_8888);
-            uint8_t* outPointer = reinterpret_cast<uint8_t*>(outBuffer.bits);
-            for (int y = 0; y < outBuffer.height; ++y) {
-                int rowOffset = y * outBuffer.stride; // pixels
-                for (int x = 0; x < outBuffer.width; ++x) {
-                    int colOffset = (rowOffset + x) * PIXEL_SIZE; // bytes
-
-                    // RGB are converted
-                    for (int c = 0; c < (PIXEL_SIZE - 1); ++c) {
-                        outPointer[colOffset + c] = srgbToLinear(
-                                mLockedBuffer.data[colOffset + c]);
-                    }
-
-                    // Alpha isn't converted
-                    outPointer[colOffset + 3] =
-                            mLockedBuffer.data[colOffset + 3];
-                }
-            }
-        }
-        mOutputSurface->unlockAndPost();
-
-        int sleepSeconds = atoi(getenv(SHOW_DEBUG_STRING));
-        sleep(sleepSeconds);
-    }
-};
-
-const char SRGBTest::SHOW_DEBUG_STRING[] = "DEBUG_OUTPUT_SECONDS";
-
-TEST_F(SRGBTest, GLRenderFromSRGBTexture) {
-    ASSERT_NO_FATAL_FAILURE(initShaders());
-
-    // The RGB texture is displayed in the top half
-    ASSERT_NO_FATAL_FAILURE(drawTexture(false, 0, DISPLAY_HEIGHT / 2,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT / 2));
-
-    // The SRGB texture is displayed in the bottom half
-    ASSERT_NO_FATAL_FAILURE(drawTexture(true, 0, 0,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT / 2));
-
-    eglSwapBuffers(mEglDisplay, mEglSurface);
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    // Lock
-    ASSERT_EQ(NO_ERROR, mCpuConsumer->lockNextBuffer(&mLockedBuffer));
-    ASSERT_NO_FATAL_FAILURE(
-        checkLockedBuffer(PIXEL_FORMAT_RGBA_8888, HAL_DATASPACE_UNKNOWN));
-
-    // Compare a pixel in the middle of each texture
-    int midSRGBOffset = (DISPLAY_HEIGHT / 4) * mLockedBuffer.stride *
-            PIXEL_SIZE;
-    int midRGBOffset = midSRGBOffset * 3;
-    midRGBOffset += (DISPLAY_WIDTH / 2) * PIXEL_SIZE;
-    midSRGBOffset += (DISPLAY_WIDTH / 2) * PIXEL_SIZE;
-    for (int c = 0; c < PIXEL_SIZE; ++c) {
-        int expectedValue = mLockedBuffer.data[midRGBOffset + c];
-        int actualValue = mLockedBuffer.data[midSRGBOffset + c];
-        ASSERT_PRED2(withinTolerance, expectedValue, actualValue);
-    }
-
-    // mLockedBuffer is unlocked in TearDown so we can copy data from it to
-    // the debug surface if necessary
-}
-
-// XXX: Disabled since we don't currently expect this to work
-TEST_F(SRGBTest, DISABLED_RenderToSRGBSurface) {
-    ASSERT_NO_FATAL_FAILURE(initShaders());
-
-    // By default, the first buffer we write into will be RGB
-
-    // Render an RGB texture across the whole surface
-    ASSERT_NO_FATAL_FAILURE(drawTexture(false, 0, 0,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT));
-    eglSwapBuffers(mEglDisplay, mEglSurface);
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    // Lock
-    ASSERT_EQ(NO_ERROR, mCpuConsumer->lockNextBuffer(&mLockedBuffer));
-    ASSERT_NO_FATAL_FAILURE(
-        checkLockedBuffer(PIXEL_FORMAT_RGBA_8888, HAL_DATASPACE_UNKNOWN));
-
-    // Save the values of the middle pixel for later comparison against SRGB
-    uint8_t values[PIXEL_SIZE] = {};
-    int middleOffset = (DISPLAY_HEIGHT / 2) * mLockedBuffer.stride *
-            PIXEL_SIZE;
-    middleOffset += (DISPLAY_WIDTH / 2) * PIXEL_SIZE;
-    for (int c = 0; c < PIXEL_SIZE; ++c) {
-        values[c] = mLockedBuffer.data[middleOffset + c];
-    }
-
-    // Unlock
-    ASSERT_EQ(NO_ERROR, mCpuConsumer->unlockBuffer(mLockedBuffer));
-
-    // Switch to SRGB window surface
-    static const int srgbAttribs[] = {
-        EGL_GL_COLORSPACE_KHR, EGL_GL_COLORSPACE_SRGB_KHR,
-        EGL_NONE,
-    };
-
-    EXPECT_TRUE(eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE,
-            mEglContext));
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    EXPECT_TRUE(eglDestroySurface(mEglDisplay, mEglSurface));
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    mEglSurface = eglCreateWindowSurface(mEglDisplay, mEglConfig,
-            mInputSurface.get(), srgbAttribs);
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-    ASSERT_NE(EGL_NO_SURFACE, mEglSurface);
-
-    EXPECT_TRUE(eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface,
-            mEglContext));
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    // Render the texture again
-    ASSERT_NO_FATAL_FAILURE(drawTexture(false, 0, 0,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT));
-    eglSwapBuffers(mEglDisplay, mEglSurface);
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    // Lock
-    ASSERT_EQ(NO_ERROR, mCpuConsumer->lockNextBuffer(&mLockedBuffer));
-
-    // Make sure we actually got the SRGB buffer on the consumer side
-    ASSERT_NO_FATAL_FAILURE(
-        checkLockedBuffer(PIXEL_FORMAT_RGBA_8888, HAL_DATASPACE_SRGB));
-
-    // Verify that the stored value is the same, accounting for RGB/SRGB
-    for (int c = 0; c < PIXEL_SIZE; ++c) {
-        // The alpha value should be equivalent before linear->SRGB
-        float rgbAsSRGB = (c == 3) ? values[c] / 255.0f :
-                linearToSRGB(values[c] / 255.0f);
-        int expectedValue = rgbAsSRGB * 255.0f + 0.5f;
-        int actualValue = mLockedBuffer.data[middleOffset + c];
-        ASSERT_PRED2(withinTolerance, expectedValue, actualValue);
-    }
-
-    // mLockedBuffer is unlocked in TearDown so we can copy data from it to
-    // the debug surface if necessary
-}
-
-} // namespace android
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index ceeb90a..da6f13d 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -18,13 +18,13 @@
 
 #include <gtest/gtest.h>
 
-#include <binder/IMemory.h>
 #include <binder/ProcessState.h>
+#include <cutils/properties.h>
+#include <gui/BufferItemConsumer.h>
 #include <gui/IDisplayEventConnection.h>
 #include <gui/ISurfaceComposer.h>
 #include <gui/Surface.h>
 #include <gui/SurfaceComposerClient.h>
-#include <gui/BufferItemConsumer.h>
 #include <private/gui/ComposerService.h>
 #include <ui/Rect.h>
 #include <utils/String8.h>
@@ -253,6 +253,35 @@
     EXPECT_STREQ("TestConsumer", surface->getConsumerName().string());
 }
 
+TEST_F(SurfaceTest, GetWideColorSupport) {
+    sp<IGraphicBufferProducer> producer;
+    sp<IGraphicBufferConsumer> consumer;
+    BufferQueue::createBufferQueue(&producer, &consumer);
+
+    sp<DummyConsumer> dummyConsumer(new DummyConsumer);
+    consumer->consumerConnect(dummyConsumer, false);
+    consumer->setConsumerName(String8("TestConsumer"));
+
+    sp<Surface> surface = new Surface(producer);
+    sp<ANativeWindow> window(surface);
+    native_window_api_connect(window.get(), NATIVE_WINDOW_API_CPU);
+
+    bool supported;
+    surface->getWideColorSupport(&supported);
+
+    // TODO(courtneygo): How can we know what device we are on to
+    // verify that this is correct?
+    char product[PROPERTY_VALUE_MAX] = "0";
+    property_get("ro.build.product", product, "0");
+    std::cerr << "[          ] product = " << product << std::endl;
+
+    if (strcmp("marlin", product) == 0 || strcmp("sailfish", product) == 0) {
+        ASSERT_EQ(true, supported);
+    } else {
+        ASSERT_EQ(false, supported);
+    }
+}
+
 TEST_F(SurfaceTest, DynamicSetBufferCount) {
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
diff --git a/libs/input/Android.bp b/libs/input/Android.bp
index 9485d5b..9294419 100644
--- a/libs/input/Android.bp
+++ b/libs/input/Android.bp
@@ -17,7 +17,11 @@
 cc_library {
     name: "libinput",
     host_supported: true,
-
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+    ],
     srcs: [
         "Input.cpp",
         "InputDevice.cpp",
diff --git a/libs/input/InputDevice.cpp b/libs/input/InputDevice.cpp
index d755ed3..4287abe 100644
--- a/libs/input/InputDevice.cpp
+++ b/libs/input/InputDevice.cpp
@@ -21,6 +21,7 @@
 #include <ctype.h>
 
 #include <input/InputDevice.h>
+#include <input/InputEventLabels.h>
 
 namespace android {
 
@@ -87,17 +88,23 @@
         const String8& name, InputDeviceConfigurationFileType type) {
     // Search system repository.
     String8 path;
-    path.setTo(getenv("ANDROID_ROOT"));
-    path.append("/usr/");
-    appendInputDeviceConfigurationFileRelativePath(path, name, type);
+
+    // Treblized input device config files will be located /odm/usr or /vendor/usr.
+    const char *rootsForPartition[] {"/odm", "/vendor", getenv("ANDROID_ROOT")};
+    for (size_t i = 0; i < size(rootsForPartition); i++) {
+        path.setTo(rootsForPartition[i]);
+        path.append("/usr/");
+        appendInputDeviceConfigurationFileRelativePath(path, name, type);
 #if DEBUG_PROBE
-    ALOGD("Probing for system provided input device configuration file: path='%s'", path.string());
+        ALOGD("Probing for system provided input device configuration file: path='%s'",
+              path.string());
 #endif
-    if (!access(path.string(), R_OK)) {
+        if (!access(path.string(), R_OK)) {
 #if DEBUG_PROBE
-        ALOGD("Found");
+            ALOGD("Found");
 #endif
-        return path;
+            return path;
+        }
     }
 
     // Search user repository.
diff --git a/libs/input/Keyboard.cpp b/libs/input/Keyboard.cpp
index 9a01395..07f2289 100644
--- a/libs/input/Keyboard.cpp
+++ b/libs/input/Keyboard.cpp
@@ -208,7 +208,6 @@
 }
 
 int32_t updateMetaState(int32_t keyCode, bool down, int32_t oldMetaState) {
-    int32_t mask;
     switch (keyCode) {
     case AKEYCODE_ALT_LEFT:
         return setEphemeralMetaState(AMETA_ALT_LEFT_ON, down, oldMetaState);
diff --git a/libs/nativewindow/AHardwareBuffer.cpp b/libs/nativewindow/AHardwareBuffer.cpp
new file mode 100644
index 0000000..3fbab17
--- /dev/null
+++ b/libs/nativewindow/AHardwareBuffer.cpp
@@ -0,0 +1,435 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AHardwareBuffer"
+
+#include <android/hardware_buffer.h>
+
+#include <errno.h>
+#include <sys/socket.h>
+#include <memory>
+
+#include <cutils/native_handle.h>
+#include <log/log.h>
+#include <utils/StrongPointer.h>
+#include <ui/GraphicBuffer.h>
+#include <system/graphics.h>
+#include <hardware/gralloc1.h>
+
+#include <private/android/AHardwareBufferHelpers.h>
+
+
+static constexpr int kDataBufferSize = 64 * sizeof(int);  // 64 ints
+
+using namespace android;
+
+// ----------------------------------------------------------------------------
+// Public functions
+// ----------------------------------------------------------------------------
+
+int AHardwareBuffer_allocate(const AHardwareBuffer_Desc* desc, AHardwareBuffer** outBuffer) {
+    if (!outBuffer || !desc)
+        return BAD_VALUE;
+
+    int format = AHardwareBuffer_convertToPixelFormat(desc->format);
+    if (format == 0) {
+        ALOGE("Invalid pixel format %u", desc->format);
+        return BAD_VALUE;
+    }
+
+    if (desc->format == AHARDWAREBUFFER_FORMAT_BLOB && desc->height != 1) {
+        ALOGE("Height must be 1 when using the AHARDWAREBUFFER_FORMAT_BLOB format");
+        return BAD_VALUE;
+    }
+
+    uint64_t producerUsage = 0;
+    uint64_t consumerUsage = 0;
+    AHardwareBuffer_convertToGrallocUsageBits(&producerUsage, &consumerUsage, desc->usage0,
+            desc->usage1);
+
+    sp<GraphicBuffer> gbuffer(new GraphicBuffer(
+            desc->width, desc->height, format, desc->layers, producerUsage, consumerUsage,
+            std::string("AHardwareBuffer pid [") + std::to_string(getpid()) + "]"));
+
+    status_t err = gbuffer->initCheck();
+    if (err != 0 || gbuffer->handle == 0) {
+        if (err == NO_MEMORY) {
+            GraphicBuffer::dumpAllocationsToSystemLog();
+        }
+        ALOGE("GraphicBufferAlloc::createGraphicBuffer(w=%u, h=%u, lc=%u) failed (%s), handle=%p",
+                desc->width, desc->height, desc->layers, strerror(-err), gbuffer->handle);
+        return err;
+    }
+
+    *outBuffer = AHardwareBuffer_from_GraphicBuffer(gbuffer.get());
+
+    // Ensure the buffer doesn't get destroyed when the sp<> goes away.
+    AHardwareBuffer_acquire(*outBuffer);
+    return NO_ERROR;
+}
+
+void AHardwareBuffer_acquire(AHardwareBuffer* buffer) {
+    AHardwareBuffer_to_GraphicBuffer(buffer)->incStrong((void*)AHardwareBuffer_acquire);
+}
+
+void AHardwareBuffer_release(AHardwareBuffer* buffer) {
+    AHardwareBuffer_to_GraphicBuffer(buffer)->decStrong((void*)AHardwareBuffer_release);
+}
+
+void AHardwareBuffer_describe(const AHardwareBuffer* buffer,
+        AHardwareBuffer_Desc* outDesc) {
+    if (!buffer || !outDesc) return;
+
+    const GraphicBuffer* gbuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+
+    outDesc->width = gbuffer->getWidth();
+    outDesc->height = gbuffer->getHeight();
+    outDesc->layers = gbuffer->getLayerCount();
+    AHardwareBuffer_convertFromGrallocUsageBits(&outDesc->usage0, &outDesc->usage1,
+            gbuffer->getUsage(), gbuffer->getUsage());
+    outDesc->format = AHardwareBuffer_convertFromPixelFormat(
+            static_cast<uint32_t>(gbuffer->getPixelFormat()));
+}
+
+int AHardwareBuffer_lock(AHardwareBuffer* buffer, uint64_t usage0,
+        int32_t fence, const ARect* rect, void** outVirtualAddress) {
+    if (!buffer) return BAD_VALUE;
+
+    if (usage0 & ~(AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN |
+                   AHARDWAREBUFFER_USAGE0_CPU_WRITE_OFTEN)) {
+        ALOGE("Invalid usage flags passed to AHardwareBuffer_lock; only "
+                " AHARDWAREBUFFER_USAGE0_CPU_* flags are allowed");
+        return BAD_VALUE;
+    }
+
+    uint64_t producerUsage = 0;
+    uint64_t consumerUsage = 0;
+    AHardwareBuffer_convertToGrallocUsageBits(&producerUsage, &consumerUsage, usage0, 0);
+    GraphicBuffer* gBuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+    Rect bounds;
+    if (!rect) {
+        bounds.set(Rect(gBuffer->getWidth(), gBuffer->getHeight()));
+    } else {
+        bounds.set(Rect(rect->left, rect->top, rect->right, rect->bottom));
+    }
+    return gBuffer->lockAsync(producerUsage, consumerUsage, bounds,
+            outVirtualAddress, fence);
+}
+
+int AHardwareBuffer_unlock(AHardwareBuffer* buffer, int32_t* fence) {
+    if (!buffer) return BAD_VALUE;
+
+    GraphicBuffer* gBuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+    return gBuffer->unlockAsync(fence);
+}
+
+int AHardwareBuffer_sendHandleToUnixSocket(const AHardwareBuffer* buffer,
+        int socketFd) {
+    if (!buffer) return BAD_VALUE;
+    const GraphicBuffer* gBuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+
+    size_t flattenedSize = gBuffer->getFlattenedSize();
+    size_t fdCount = gBuffer->getFdCount();
+
+    std::unique_ptr<uint8_t[]> data(new uint8_t[flattenedSize]);
+    std::unique_ptr<int[]> fds(new int[fdCount]);
+
+    // Make copies of needed items since flatten modifies them, and we don't
+    // want to send anything if there's an error during flatten.
+    size_t flattenedSizeCopy = flattenedSize;
+    size_t fdCountCopy = fdCount;
+    void* dataStart = data.get();
+    int* fdsStart = fds.get();
+    status_t err = gBuffer->flatten(dataStart, flattenedSizeCopy, fdsStart,
+            fdCountCopy);
+    if (err != NO_ERROR) {
+        return err;
+    }
+
+    struct iovec iov[1];
+    iov[0].iov_base = data.get();
+    iov[0].iov_len = flattenedSize;
+
+    char buf[CMSG_SPACE(kDataBufferSize)];
+    struct msghdr msg = {
+            .msg_control = buf,
+            .msg_controllen = sizeof(buf),
+            .msg_iov = &iov[0],
+            .msg_iovlen = 1,
+    };
+
+    struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg);
+    cmsg->cmsg_level = SOL_SOCKET;
+    cmsg->cmsg_type = SCM_RIGHTS;
+    cmsg->cmsg_len = CMSG_LEN(sizeof(int) * fdCount);
+    int* fdData = reinterpret_cast<int*>(CMSG_DATA(cmsg));
+    memcpy(fdData, fds.get(), sizeof(int) * fdCount);
+    msg.msg_controllen = cmsg->cmsg_len;
+
+    int result = sendmsg(socketFd, &msg, 0);
+    if (result <= 0) {
+        ALOGE("Error writing AHardwareBuffer to socket: error %#x (%s)",
+                result, strerror(errno));
+        return result;
+    }
+    return NO_ERROR;
+}
+
+int AHardwareBuffer_recvHandleFromUnixSocket(int socketFd,
+        AHardwareBuffer** outBuffer) {
+    if (!outBuffer) return BAD_VALUE;
+
+    char dataBuf[CMSG_SPACE(kDataBufferSize)];
+    char fdBuf[CMSG_SPACE(kDataBufferSize)];
+    struct iovec iov[1];
+    iov[0].iov_base = dataBuf;
+    iov[0].iov_len = sizeof(dataBuf);
+
+    struct msghdr msg = {
+            .msg_control = fdBuf,
+            .msg_controllen = sizeof(fdBuf),
+            .msg_iov = &iov[0],
+            .msg_iovlen = 1,
+    };
+
+    int result = recvmsg(socketFd, &msg, 0);
+    if (result <= 0) {
+        ALOGE("Error reading AHardwareBuffer from socket: error %#x (%s)",
+                result, strerror(errno));
+        return result;
+    }
+
+    if (msg.msg_iovlen != 1) {
+        ALOGE("Error reading AHardwareBuffer from socket: bad data length");
+        return INVALID_OPERATION;
+    }
+
+    if (msg.msg_controllen % sizeof(int) != 0) {
+        ALOGE("Error reading AHardwareBuffer from socket: bad fd length");
+        return INVALID_OPERATION;
+    }
+
+    size_t dataLen = msg.msg_iov[0].iov_len;
+    const void* data = static_cast<const void*>(msg.msg_iov[0].iov_base);
+    if (!data) {
+        ALOGE("Error reading AHardwareBuffer from socket: no buffer data");
+        return INVALID_OPERATION;
+    }
+
+    struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg);
+    if (!cmsg) {
+        ALOGE("Error reading AHardwareBuffer from socket: no fd header");
+        return INVALID_OPERATION;
+    }
+
+    size_t fdCount = msg.msg_controllen >> 2;
+    const int* fdData = reinterpret_cast<const int*>(CMSG_DATA(cmsg));
+    if (!fdData) {
+        ALOGE("Error reading AHardwareBuffer from socket: no fd data");
+        return INVALID_OPERATION;
+    }
+
+    GraphicBuffer* gBuffer = new GraphicBuffer();
+    status_t err = gBuffer->unflatten(data, dataLen, fdData, fdCount);
+    if (err != NO_ERROR) {
+        return err;
+    }
+    *outBuffer = AHardwareBuffer_from_GraphicBuffer(gBuffer);
+    // Ensure the buffer has a positive ref-count.
+    AHardwareBuffer_acquire(*outBuffer);
+
+    return NO_ERROR;
+}
+
+const struct native_handle* AHardwareBuffer_getNativeHandle(
+        const AHardwareBuffer* buffer) {
+    if (!buffer) return nullptr;
+    const GraphicBuffer* gbuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+    return gbuffer->handle;
+}
+
+
+// ----------------------------------------------------------------------------
+// Helpers implementation
+// ----------------------------------------------------------------------------
+
+namespace android {
+
+// A 1:1 mapping of AHardwaqreBuffer bitmasks to gralloc1 bitmasks.
+struct UsageMaskMapping {
+    uint64_t hardwareBufferMask;
+    uint64_t grallocMask;
+};
+
+static constexpr UsageMaskMapping kUsage0ProducerMapping[] = {
+    { AHARDWAREBUFFER_USAGE0_CPU_WRITE, GRALLOC1_PRODUCER_USAGE_CPU_WRITE },
+    { AHARDWAREBUFFER_USAGE0_CPU_WRITE_OFTEN, GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN },
+    { AHARDWAREBUFFER_USAGE0_GPU_COLOR_OUTPUT, GRALLOC1_PRODUCER_USAGE_GPU_RENDER_TARGET },
+    { AHARDWAREBUFFER_USAGE0_PROTECTED_CONTENT, GRALLOC1_PRODUCER_USAGE_PROTECTED },
+    { AHARDWAREBUFFER_USAGE0_SENSOR_DIRECT_DATA, GRALLOC1_PRODUCER_USAGE_SENSOR_DIRECT_DATA },
+};
+
+static constexpr UsageMaskMapping kUsage1ProducerMapping[] = {
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_0, GRALLOC1_PRODUCER_USAGE_PRIVATE_0 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_1, GRALLOC1_PRODUCER_USAGE_PRIVATE_1 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_2, GRALLOC1_PRODUCER_USAGE_PRIVATE_2 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_3, GRALLOC1_PRODUCER_USAGE_PRIVATE_3 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_4, GRALLOC1_PRODUCER_USAGE_PRIVATE_4 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_5, GRALLOC1_PRODUCER_USAGE_PRIVATE_5 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_6, GRALLOC1_PRODUCER_USAGE_PRIVATE_6 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_7, GRALLOC1_PRODUCER_USAGE_PRIVATE_7 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_8, GRALLOC1_PRODUCER_USAGE_PRIVATE_8 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_9, GRALLOC1_PRODUCER_USAGE_PRIVATE_9 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_10, GRALLOC1_PRODUCER_USAGE_PRIVATE_10 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_11, GRALLOC1_PRODUCER_USAGE_PRIVATE_11 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_12, GRALLOC1_PRODUCER_USAGE_PRIVATE_12 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_13, GRALLOC1_PRODUCER_USAGE_PRIVATE_13 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_14, GRALLOC1_PRODUCER_USAGE_PRIVATE_14 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_15, GRALLOC1_PRODUCER_USAGE_PRIVATE_15 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_16, GRALLOC1_PRODUCER_USAGE_PRIVATE_16 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_17, GRALLOC1_PRODUCER_USAGE_PRIVATE_17 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_18, GRALLOC1_PRODUCER_USAGE_PRIVATE_18 },
+    { AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_19, GRALLOC1_PRODUCER_USAGE_PRIVATE_19 },
+};
+
+static constexpr UsageMaskMapping kUsage0ConsumerMapping[] = {
+    { AHARDWAREBUFFER_USAGE0_CPU_READ, GRALLOC1_CONSUMER_USAGE_CPU_READ },
+    { AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN, GRALLOC1_CONSUMER_USAGE_CPU_READ_OFTEN },
+    { AHARDWAREBUFFER_USAGE0_GPU_SAMPLED_IMAGE, GRALLOC1_CONSUMER_USAGE_GPU_TEXTURE },
+    { AHARDWAREBUFFER_USAGE0_GPU_DATA_BUFFER, GRALLOC1_CONSUMER_USAGE_GPU_DATA_BUFFER },
+    { AHARDWAREBUFFER_USAGE0_VIDEO_ENCODE, GRALLOC1_CONSUMER_USAGE_VIDEO_ENCODER },
+};
+
+static constexpr UsageMaskMapping kUsage1ConsumerMapping[] = {
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_0, GRALLOC1_CONSUMER_USAGE_PRIVATE_0 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_1, GRALLOC1_CONSUMER_USAGE_PRIVATE_1 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_2, GRALLOC1_CONSUMER_USAGE_PRIVATE_2 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_3, GRALLOC1_CONSUMER_USAGE_PRIVATE_3 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_4, GRALLOC1_CONSUMER_USAGE_PRIVATE_4 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_5, GRALLOC1_CONSUMER_USAGE_PRIVATE_5 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_6, GRALLOC1_CONSUMER_USAGE_PRIVATE_6 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_7, GRALLOC1_CONSUMER_USAGE_PRIVATE_7 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_8, GRALLOC1_CONSUMER_USAGE_PRIVATE_8 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_9, GRALLOC1_CONSUMER_USAGE_PRIVATE_9 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_10, GRALLOC1_CONSUMER_USAGE_PRIVATE_10 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_11, GRALLOC1_CONSUMER_USAGE_PRIVATE_11 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_12, GRALLOC1_CONSUMER_USAGE_PRIVATE_12 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_13, GRALLOC1_CONSUMER_USAGE_PRIVATE_13 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_14, GRALLOC1_CONSUMER_USAGE_PRIVATE_14 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_15, GRALLOC1_CONSUMER_USAGE_PRIVATE_15 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_16, GRALLOC1_CONSUMER_USAGE_PRIVATE_16 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_17, GRALLOC1_CONSUMER_USAGE_PRIVATE_17 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_18, GRALLOC1_CONSUMER_USAGE_PRIVATE_18 },
+    { AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_19, GRALLOC1_CONSUMER_USAGE_PRIVATE_19 },
+};
+
+static inline bool containsBits(uint64_t mask, uint64_t bitsToCheck) {
+    return (mask & bitsToCheck) == bitsToCheck && bitsToCheck;
+}
+
+uint32_t AHardwareBuffer_convertFromPixelFormat(uint32_t format) {
+    switch (format) {
+        case HAL_PIXEL_FORMAT_RGBA_8888:    return AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM;
+        case HAL_PIXEL_FORMAT_RGBX_8888:    return AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM;
+        case HAL_PIXEL_FORMAT_RGB_565:      return AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM;
+        case HAL_PIXEL_FORMAT_RGB_888:      return AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM;
+        case HAL_PIXEL_FORMAT_RGBA_FP16:    return AHARDWAREBUFFER_FORMAT_R16G16B16A16_SFLOAT;
+        case HAL_PIXEL_FORMAT_RGBA_1010102: return AHARDWAREBUFFER_FORMAT_A2R10G10B10_UNORM_PACK32;
+        case HAL_PIXEL_FORMAT_BLOB:         return AHARDWAREBUFFER_FORMAT_BLOB;
+        default:ALOGE("Unknown pixel format %u", format);
+            return 0;
+    }
+}
+
+uint32_t AHardwareBuffer_convertToPixelFormat(uint32_t format) {
+    switch (format) {
+        case AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM:         return HAL_PIXEL_FORMAT_RGBA_8888;
+        case AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM:         return HAL_PIXEL_FORMAT_RGBX_8888;
+        case AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM:           return HAL_PIXEL_FORMAT_RGB_565;
+        case AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM:           return HAL_PIXEL_FORMAT_RGB_888;
+        case AHARDWAREBUFFER_FORMAT_R16G16B16A16_SFLOAT:    return HAL_PIXEL_FORMAT_RGBA_FP16;
+        case AHARDWAREBUFFER_FORMAT_A2R10G10B10_UNORM_PACK32: return HAL_PIXEL_FORMAT_RGBA_1010102;
+        case AHARDWAREBUFFER_FORMAT_BLOB:                   return HAL_PIXEL_FORMAT_BLOB;
+        default:ALOGE("Unknown AHardwareBuffer format %u", format);
+            return 0;
+    }
+}
+
+void AHardwareBuffer_convertToGrallocUsageBits(uint64_t* outProducerUsage,
+    uint64_t* outConsumerUsage, uint64_t usage0, uint64_t usage1) {
+    *outProducerUsage = 0;
+    *outConsumerUsage = 0;
+    for (const UsageMaskMapping& mapping : kUsage0ProducerMapping) {
+        if (containsBits(usage0, mapping.hardwareBufferMask)) {
+            *outProducerUsage |= mapping.grallocMask;
+        }
+    }
+    for (const UsageMaskMapping& mapping : kUsage1ProducerMapping) {
+        if (containsBits(usage1, mapping.hardwareBufferMask)) {
+            *outProducerUsage |= mapping.grallocMask;
+        }
+    }
+    for (const UsageMaskMapping& mapping : kUsage0ConsumerMapping) {
+        if (containsBits(usage0, mapping.hardwareBufferMask)) {
+            *outConsumerUsage |= mapping.grallocMask;
+        }
+    }
+    for (const UsageMaskMapping& mapping : kUsage1ConsumerMapping) {
+        if (containsBits(usage1, mapping.hardwareBufferMask)) {
+            *outConsumerUsage |= mapping.grallocMask;
+        }
+    }
+}
+
+void AHardwareBuffer_convertFromGrallocUsageBits(uint64_t* outUsage0, uint64_t* outUsage1,
+        uint64_t producerUsage, uint64_t consumerUsage) {
+    *outUsage0 = 0;
+    *outUsage1 = 0;
+    for (const UsageMaskMapping& mapping : kUsage0ProducerMapping) {
+        if (containsBits(producerUsage, mapping.grallocMask)) {
+            *outUsage0 |= mapping.hardwareBufferMask;
+        }
+    }
+    for (const UsageMaskMapping& mapping : kUsage1ProducerMapping) {
+        if (containsBits(producerUsage, mapping.grallocMask)) {
+            *outUsage1 |= mapping.hardwareBufferMask;
+        }
+    }
+    for (const UsageMaskMapping& mapping : kUsage0ConsumerMapping) {
+        if (containsBits(consumerUsage, mapping.grallocMask)) {
+            *outUsage0 |= mapping.hardwareBufferMask;
+        }
+    }
+    for (const UsageMaskMapping& mapping : kUsage1ConsumerMapping) {
+        if (containsBits(consumerUsage, mapping.grallocMask)) {
+            *outUsage1 |= mapping.hardwareBufferMask;
+        }
+    }
+}
+
+const GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(const AHardwareBuffer* buffer) {
+    return reinterpret_cast<const GraphicBuffer*>(buffer);
+}
+
+GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(AHardwareBuffer* buffer) {
+    return reinterpret_cast<GraphicBuffer*>(buffer);
+}
+
+AHardwareBuffer* AHardwareBuffer_from_GraphicBuffer(GraphicBuffer* buffer) {
+    return reinterpret_cast<AHardwareBuffer*>(buffer);
+}
+
+} // namespace android
diff --git a/libs/nativewindow/ANativeWindow.cpp b/libs/nativewindow/ANativeWindow.cpp
new file mode 100644
index 0000000..34c136a
--- /dev/null
+++ b/libs/nativewindow/ANativeWindow.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "ANativeWindow"
+
+#include <android/native_window.h>
+#include <system/window.h>
+
+void ANativeWindow_acquire(ANativeWindow* window) {
+    window->incStrong((void*)ANativeWindow_acquire);
+}
+
+void ANativeWindow_release(ANativeWindow* window) {
+    window->decStrong((void*)ANativeWindow_release);
+}
+
+static int32_t getWindowProp(ANativeWindow* window, int what) {
+    int value;
+    int res = window->query(window, what, &value);
+    return res < 0 ? res : value;
+}
+
+int32_t ANativeWindow_getWidth(ANativeWindow* window) {
+    return getWindowProp(window, NATIVE_WINDOW_WIDTH);
+}
+
+int32_t ANativeWindow_getHeight(ANativeWindow* window) {
+    return getWindowProp(window, NATIVE_WINDOW_HEIGHT);
+}
+
+int32_t ANativeWindow_getFormat(ANativeWindow* window) {
+    return getWindowProp(window, NATIVE_WINDOW_FORMAT);
+}
+
+int32_t ANativeWindow_setBuffersGeometry(ANativeWindow* window, int32_t width,
+        int32_t height, int32_t format) {
+    int32_t err = native_window_set_buffers_format(window, format);
+    if (!err) {
+        err = native_window_set_buffers_user_dimensions(window, width, height);
+        if (!err) {
+            int mode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
+            if (width && height) {
+                mode = NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW;
+            }
+            err = native_window_set_scaling_mode(window, mode);
+        }
+    }
+    return err;
+}
+
+int32_t ANativeWindow_lock(ANativeWindow* window, ANativeWindow_Buffer* outBuffer,
+        ARect* inOutDirtyBounds) {
+    return window->perform(window, NATIVE_WINDOW_LOCK, outBuffer, inOutDirtyBounds);
+}
+
+int32_t ANativeWindow_unlockAndPost(ANativeWindow* window) {
+    return window->perform(window, NATIVE_WINDOW_UNLOCK_AND_POST);
+}
diff --git a/libs/nativewindow/Android.bp b/libs/nativewindow/Android.bp
new file mode 100644
index 0000000..9c5f096
--- /dev/null
+++ b/libs/nativewindow/Android.bp
@@ -0,0 +1,60 @@
+// Copyright (C) 2017 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+ndk_headers {
+    name: "libnativewindow_headers",
+    from: "include/android",
+    to: "android",
+    srcs: ["include/android/*.h"],
+    license: "NOTICE",
+}
+
+ndk_library {
+    name: "libnativewindow.ndk",
+    symbol_file: "libnativewindow.map.txt",
+
+    // Android O
+    first_version: "26",
+}
+
+cc_library {
+    name: "libnativewindow",
+    export_include_dirs: ["include"],
+
+    clang: true,
+
+    srcs: [
+        "AHardwareBuffer.cpp",
+        "ANativeWindow.cpp",
+    ],
+
+    shared_libs: [
+        "libhardware",
+        "libcutils",
+        "liblog",
+        "libutils",
+        "libui",
+    ],
+
+    static_libs: [
+        "libarect",
+    ],
+
+    // headers we include in our public headers
+    export_static_lib_headers: [
+        "libarect",
+    ],
+}
+
+subdirs = ["tests"]
diff --git a/libs/nativewindow/MODULE_LICENSE_APACHE2 b/libs/nativewindow/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libs/nativewindow/MODULE_LICENSE_APACHE2
diff --git a/libs/nativewindow/NOTICE b/libs/nativewindow/NOTICE
new file mode 100644
index 0000000..c5b1efa
--- /dev/null
+++ b/libs/nativewindow/NOTICE
@@ -0,0 +1,190 @@
+
+   Copyright (c) 2005-2008, The Android Open Source Project
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
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+      any Contribution intentionally submitted for inclusion in the Work
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+      the terms of any separate license agreement you may have executed
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+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
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+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      PARTICULAR PURPOSE. You are solely responsible for determining the
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
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+
diff --git a/include/android/hardware_buffer.h b/libs/nativewindow/include/android/hardware_buffer.h
similarity index 75%
rename from include/android/hardware_buffer.h
rename to libs/nativewindow/include/android/hardware_buffer.h
index 9c08c7b..ef49995 100644
--- a/include/android/hardware_buffer.h
+++ b/libs/nativewindow/include/android/hardware_buffer.h
@@ -97,10 +97,6 @@
     AHARDWAREBUFFER_USAGE0_GPU_SAMPLED_IMAGE      = 1ULL << 10,
     /* The buffer will be written to by the GPU */
     AHARDWAREBUFFER_USAGE0_GPU_COLOR_OUTPUT       = 1ULL << 11,
-    /* The buffer will be read from and written to by the GPU */
-    AHARDWAREBUFFER_USAGE0_GPU_STORAGE_IMAGE      =
-            AHARDWAREBUFFER_USAGE0_GPU_SAMPLED_IMAGE |
-            AHARDWAREBUFFER_USAGE0_GPU_COLOR_OUTPUT,
     /* The buffer will be used as a cubemap texture */
     AHARDWAREBUFFER_USAGE0_GPU_CUBEMAP            = 1ULL << 13,
     /* The buffer will be used as a shader storage or uniform buffer object*/
@@ -113,13 +109,57 @@
     AHARDWAREBUFFER_USAGE0_VIDEO_ENCODE           = 1ULL << 21,
 };
 
+/* These flags are intended only for use by device-specific graphics drivers. */
+enum {
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_19 = 1ULL << 24,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_19 = 1ULL << 25,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_18 = 1ULL << 26,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_18 = 1ULL << 27,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_17 = 1ULL << 28,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_17 = 1ULL << 29,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_16 = 1ULL << 30,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_16 = 1ULL << 31,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_15 = 1ULL << 32,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_15 = 1ULL << 33,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_14 = 1ULL << 34,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_14 = 1ULL << 35,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_13 = 1ULL << 36,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_13 = 1ULL << 37,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_12 = 1ULL << 38,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_12 = 1ULL << 39,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_11 = 1ULL << 40,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_11 = 1ULL << 41,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_10 = 1ULL << 42,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_10 = 1ULL << 43,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_9 = 1ULL << 44,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_9 = 1ULL << 45,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_8 = 1ULL << 46,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_8 = 1ULL << 47,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_7 = 1ULL << 48,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_7 = 1ULL << 49,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_6 = 1ULL << 50,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_6 = 1ULL << 51,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_5 = 1ULL << 52,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_5 = 1ULL << 53,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_4 = 1ULL << 54,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_4 = 1ULL << 55,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_3 = 1ULL << 56,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_3 = 1ULL << 57,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_2 = 1ULL << 58,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_2 = 1ULL << 59,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_1 = 1ULL << 60,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_1 = 1ULL << 61,
+    AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_0 = 1ULL << 62,
+    AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_0 = 1ULL << 63,
+};
+
 typedef struct AHardwareBuffer_Desc {
     uint32_t    width;
     uint32_t    height;
     uint32_t    layers;
+    uint32_t    format;     // One of AHARDWAREBUFFER_FORMAT_*
     uint64_t    usage0;     // Combination of AHARDWAREBUFFER_USAGE0_*
     uint64_t    usage1;     // Initialize to zero, reserved for future use
-    uint32_t    format;     // One of AHARDWAREBUFFER_FORMAT_*
 } AHardwareBuffer_Desc;
 
 typedef struct AHardwareBuffer AHardwareBuffer;
diff --git a/include/android/native_window.h b/libs/nativewindow/include/android/native_window.h
similarity index 100%
rename from include/android/native_window.h
rename to libs/nativewindow/include/android/native_window.h
diff --git a/libs/nativewindow/include/private/android/AHardwareBufferHelpers.h b/libs/nativewindow/include/private/android/AHardwareBufferHelpers.h
new file mode 100644
index 0000000..612ee80
--- /dev/null
+++ b/libs/nativewindow/include/private/android/AHardwareBufferHelpers.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H
+#define ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H
+
+/*
+ * This file contains utility functions related to AHardwareBuffer, mostly to
+ * convert to/from HAL formats.
+ *
+ * These are PRIVATE methods, so this file can NEVER appear in a public NDK
+ * header. They are used by higher level libraries such as core/jni.
+ */
+
+#include <stdint.h>
+
+struct AHardwareBuffer;
+
+namespace android {
+
+uint32_t AHardwareBuffer_convertFromPixelFormat(uint32_t format);
+
+uint32_t AHardwareBuffer_convertToPixelFormat(uint32_t format);
+
+void AHardwareBuffer_convertToGrallocUsageBits(uint64_t* outProducerUsage,
+    uint64_t* outConsumerUsage, uint64_t usage0, uint64_t usage1);
+
+void AHardwareBuffer_convertFromGrallocUsageBits(uint64_t* outUsage0, uint64_t* outUsage1,
+    uint64_t producerUsage, uint64_t consumerUsage);
+
+class GraphicBuffer;
+const GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(const AHardwareBuffer* buffer);
+GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(AHardwareBuffer* buffer);
+AHardwareBuffer* AHardwareBuffer_from_GraphicBuffer(GraphicBuffer* buffer);
+
+} // namespace android
+
+#endif // ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H
diff --git a/libs/nativewindow/libnativewindow.map.txt b/libs/nativewindow/libnativewindow.map.txt
new file mode 100644
index 0000000..dcfabac
--- /dev/null
+++ b/libs/nativewindow/libnativewindow.map.txt
@@ -0,0 +1,26 @@
+LIBNATIVEWINDOW {
+  global:
+    AHardwareBuffer_acquire;
+    AHardwareBuffer_allocate;
+    AHardwareBuffer_describe;
+    AHardwareBuffer_fromHardwareBuffer;
+    AHardwareBuffer_getNativeHandle;
+    AHardwareBuffer_lock;
+    AHardwareBuffer_recvHandleFromUnixSocket;
+    AHardwareBuffer_release;
+    AHardwareBuffer_sendHandleToUnixSocket;
+    AHardwareBuffer_toHardwareBuffer;
+    AHardwareBuffer_unlock;
+    ANativeWindow_acquire;
+    ANativeWindow_fromSurface;
+    ANativeWindow_fromSurfaceTexture;
+    ANativeWindow_getFormat;
+    ANativeWindow_getHeight;
+    ANativeWindow_getWidth;
+    ANativeWindow_lock;
+    ANativeWindow_release;
+    ANativeWindow_setBuffersGeometry;
+    ANativeWindow_unlockAndPost;
+  local:
+    *;
+};
diff --git a/libs/nativewindow/tests/AHardwareBufferTest.cpp b/libs/nativewindow/tests/AHardwareBufferTest.cpp
new file mode 100644
index 0000000..1099043
--- /dev/null
+++ b/libs/nativewindow/tests/AHardwareBufferTest.cpp
@@ -0,0 +1,186 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AHardwareBuffer_test"
+//#define LOG_NDEBUG 0
+
+#include <android/hardware_buffer.h>
+#include <private/android/AHardwareBufferHelpers.h>
+#include <hardware/gralloc1.h>
+
+#include <gtest/gtest.h>
+
+using namespace android;
+
+static ::testing::AssertionResult BuildHexFailureMessage(uint64_t expected,
+        uint64_t actual, const char* type) {
+    std::ostringstream ss;
+    ss << type << " 0x" << std::hex << actual
+            << " does not match expected " << type << " 0x" << std::hex
+            << expected;
+    return ::testing::AssertionFailure() << ss.str();
+}
+
+static ::testing::AssertionResult TestUsageConversion(
+        uint64_t grallocProducerUsage, uint64_t grallocConsumerUsage,
+        uint64_t hardwareBufferUsage0, uint64_t hardwareBufferUsage1) {
+    uint64_t producerUsage = 0;
+    uint64_t consumerUsage = 0;
+    uint64_t usage0 = 0;
+    uint64_t usage1 = 0;
+
+    AHardwareBuffer_convertToGrallocUsageBits(
+            &producerUsage, &consumerUsage, hardwareBufferUsage0, hardwareBufferUsage1);
+    if (producerUsage != grallocProducerUsage)
+        return BuildHexFailureMessage(grallocProducerUsage, producerUsage,
+                "producer");
+    if (consumerUsage != grallocConsumerUsage)
+        return BuildHexFailureMessage(grallocConsumerUsage, consumerUsage,
+                "consumer");
+
+    AHardwareBuffer_convertFromGrallocUsageBits(
+            &usage0, &usage1, grallocProducerUsage, grallocConsumerUsage);
+    if (usage0 != hardwareBufferUsage0)
+        return BuildHexFailureMessage(hardwareBufferUsage0, usage0, "usage0");
+    if (usage1 != hardwareBufferUsage1)
+        return BuildHexFailureMessage(hardwareBufferUsage1, usage1, "usage1");
+
+    return testing::AssertionSuccess();
+}
+
+// This is a unit test rather than going through AHardwareBuffer because not
+// all flags may be supported by the host device.
+TEST(AHardwareBufferTest, ConvertToAndFromGrallocBits) {
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_CPU_READ,
+            AHARDWAREBUFFER_USAGE0_CPU_READ, 0));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_CPU_READ_OFTEN,
+            AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN, 0));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_CPU_WRITE, 0,
+            AHARDWAREBUFFER_USAGE0_CPU_WRITE, 0));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN, 0,
+            AHARDWAREBUFFER_USAGE0_CPU_WRITE_OFTEN, 0));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_GPU_TEXTURE,
+            AHARDWAREBUFFER_USAGE0_GPU_SAMPLED_IMAGE, 0));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_GPU_RENDER_TARGET,
+            0, AHARDWAREBUFFER_USAGE0_GPU_COLOR_OUTPUT, 0));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_GPU_DATA_BUFFER,
+            AHARDWAREBUFFER_USAGE0_GPU_DATA_BUFFER, 0));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PROTECTED, 0,
+            AHARDWAREBUFFER_USAGE0_PROTECTED_CONTENT, 0));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_SENSOR_DIRECT_DATA,
+            0, AHARDWAREBUFFER_USAGE0_SENSOR_DIRECT_DATA, 0));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_VIDEO_ENCODER,
+            AHARDWAREBUFFER_USAGE0_VIDEO_ENCODE, 0));
+
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_0, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_0));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_1, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_1));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_2, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_2));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_3, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_3));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_4, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_4));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_5, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_5));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_6, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_6));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_7, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_7));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_8, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_8));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_9, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_9));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_10, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_10));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_11, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_11));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_12, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_12));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_13, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_13));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_14, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_14));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_15, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_15));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_16, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_16));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_17, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_17));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_18, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_18));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_PRIVATE_19, 0,
+            0, AHARDWAREBUFFER_USAGE1_PRODUCER_PRIVATE_19));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_0,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_0));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_1,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_1));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_2,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_2));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_3,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_3));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_4,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_4));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_5,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_5));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_6,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_6));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_7,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_7));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_8,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_8));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_9,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_9));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_10,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_10));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_11,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_11));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_12,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_12));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_13,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_13));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_14,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_14));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_15,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_15));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_16,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_16));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_17,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_17));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_18,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_18));
+    EXPECT_TRUE(TestUsageConversion(0, GRALLOC1_CONSUMER_USAGE_PRIVATE_19,
+            0, AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_19));
+
+    // Test some more complex flag combinations.
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_CPU_WRITE,
+            GRALLOC1_CONSUMER_USAGE_CPU_READ,
+            AHARDWAREBUFFER_USAGE0_CPU_READ | AHARDWAREBUFFER_USAGE0_CPU_WRITE,
+            0));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN, 0,
+            AHARDWAREBUFFER_USAGE0_CPU_WRITE_OFTEN, 0));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_GPU_RENDER_TARGET,
+            GRALLOC1_CONSUMER_USAGE_GPU_TEXTURE |
+                    GRALLOC1_CONSUMER_USAGE_PRIVATE_17,
+            AHARDWAREBUFFER_USAGE0_GPU_COLOR_OUTPUT |
+                    AHARDWAREBUFFER_USAGE0_GPU_SAMPLED_IMAGE,
+            AHARDWAREBUFFER_USAGE1_CONSUMER_PRIVATE_17));
+    EXPECT_TRUE(TestUsageConversion(GRALLOC1_PRODUCER_USAGE_SENSOR_DIRECT_DATA,
+            GRALLOC1_CONSUMER_USAGE_GPU_DATA_BUFFER,
+            AHARDWAREBUFFER_USAGE0_GPU_DATA_BUFFER |
+                    AHARDWAREBUFFER_USAGE0_SENSOR_DIRECT_DATA, 0));
+}
diff --git a/libs/nativewindow/tests/Android.bp b/libs/nativewindow/tests/Android.bp
new file mode 100644
index 0000000..437ab75
--- /dev/null
+++ b/libs/nativewindow/tests/Android.bp
@@ -0,0 +1,21 @@
+//
+// Copyright (C) 2017 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "AHardwareBufferTest",
+    shared_libs: ["libnativewindow"],
+    srcs: ["AHardwareBufferTest.cpp"],
+}
diff --git a/libs/ui/GrallocAllocator.cpp b/libs/ui/GrallocAllocator.cpp
index 5c5d5b3..7af55e7 100644
--- a/libs/ui/GrallocAllocator.cpp
+++ b/libs/ui/GrallocAllocator.cpp
@@ -29,7 +29,7 @@
 
 Allocator::Allocator()
 {
-    mAllocator = IAllocator::getService("gralloc");
+    mAllocator = IAllocator::getService();
     if (mAllocator != nullptr) {
         mAllocator->createClient(
                 [&](const auto& tmpError, const auto& tmpClient) {
diff --git a/libs/ui/GrallocMapper.cpp b/libs/ui/GrallocMapper.cpp
index 6884dcb..8095247 100644
--- a/libs/ui/GrallocMapper.cpp
+++ b/libs/ui/GrallocMapper.cpp
@@ -28,7 +28,7 @@
 
 Mapper::Mapper()
 {
-    mMapper = IMapper::getService("gralloc-mapper");
+    mMapper = IMapper::getService();
     if (mMapper != nullptr && mMapper->isRemote()) {
         LOG_ALWAYS_FATAL("gralloc-mapper must be in passthrough mode");
     }
diff --git a/libs/ui/GraphicBuffer.cpp b/libs/ui/GraphicBuffer.cpp
index 37ebfb3..9006178 100644
--- a/libs/ui/GraphicBuffer.cpp
+++ b/libs/ui/GraphicBuffer.cpp
@@ -16,7 +16,12 @@
 
 #define LOG_TAG "GraphicBuffer"
 
+#include <cutils/atomic.h>
+
 #include <ui/GraphicBuffer.h>
+
+#include <cutils/atomic.h>
+
 #include <ui/GrallocMapper.h>
 #include <ui/GraphicBufferAllocator.h>
 #include <ui/GraphicBufferMapper.h>
diff --git a/libs/ui/tests/Android.bp b/libs/ui/tests/Android.bp
index 6733505..b55c212 100644
--- a/libs/ui/tests/Android.bp
+++ b/libs/ui/tests/Android.bp
@@ -25,3 +25,9 @@
     shared_libs: ["libui"],
     srcs: ["colorspace_test.cpp"],
 }
+
+cc_test {
+    name: "Gralloc1Mapper_test",
+    shared_libs: ["libui", "libutils"],
+    srcs: ["Gralloc1Mapper_test.cpp"],
+}
diff --git a/libs/ui/tests/Gralloc1Mapper_test.cpp b/libs/ui/tests/Gralloc1Mapper_test.cpp
new file mode 100644
index 0000000..b7c9f0f
--- /dev/null
+++ b/libs/ui/tests/Gralloc1Mapper_test.cpp
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Gralloc1Mapper_test"
+//#define LOG_NDEBUG 0
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <ui/GraphicBuffer.h>
+#include <ui/GraphicBufferMapper.h>
+#include <utils/Errors.h>
+
+#include <gtest/gtest.h>
+
+using namespace android;
+
+class Gralloc1MapperTest : public ::testing::Test
+{
+public:
+    ~Gralloc1MapperTest() override = default;
+
+protected:
+    void SetUp() override {
+        buffer = new GraphicBuffer(4, 8, HAL_PIXEL_FORMAT_RGBA_8888, 1,
+                GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN,
+                GRALLOC1_CONSUMER_USAGE_CPU_READ_OFTEN, "Gralloc1MapperTest");
+        ASSERT_NE(nullptr, buffer.get());
+
+        handle = static_cast<buffer_handle_t>(buffer->handle);
+
+        mapper = &GraphicBufferMapper::get();
+    }
+
+    sp<GraphicBuffer> buffer;
+    buffer_handle_t handle;
+    GraphicBufferMapper* mapper;
+};
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getDimensions) {
+    uint32_t width = 0;
+    uint32_t height = 0;
+    status_t err = mapper->getDimensions(handle, &width, &height);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+    EXPECT_EQ(4U, width);
+    EXPECT_EQ(8U, height);
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getFormat) {
+    int32_t value = 0;
+    status_t err = mapper->getFormat(handle, &value);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+    EXPECT_EQ(HAL_PIXEL_FORMAT_RGBA_8888, value);
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getLayerCount) {
+    uint32_t value = 0;
+    status_t err = mapper->getLayerCount(handle, &value);
+    if (err != GRALLOC1_ERROR_UNSUPPORTED) {
+        EXPECT_EQ(1U, value);
+    }
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getProducerUsage) {
+    uint64_t value = 0;
+    status_t err = mapper->getProducerUsage(handle, &value);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+    EXPECT_EQ(GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN, value);
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getConsumerUsage) {
+    uint64_t value = 0;
+    status_t err = mapper->getConsumerUsage(handle, &value);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+    EXPECT_EQ(GRALLOC1_CONSUMER_USAGE_CPU_READ_OFTEN, value);
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getBackingStore) {
+    uint64_t value = 0;
+    status_t err = mapper->getBackingStore(handle, &value);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getStride) {
+    uint32_t value = 0;
+    status_t err = mapper->getStride(handle, &value);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+    // The stride should be at least the width of the buffer.
+    EXPECT_LE(4U, value);
+}
diff --git a/libs/vr/libbufferhub/bufferhub_tests.cpp b/libs/vr/libbufferhub/bufferhub_tests.cpp
index 0b9e0cc..fa61c4a 100644
--- a/libs/vr/libbufferhub/bufferhub_tests.cpp
+++ b/libs/vr/libbufferhub/bufferhub_tests.cpp
@@ -1,4 +1,3 @@
-#include <android/native_window.h>
 #include <gtest/gtest.h>
 #include <private/dvr/buffer_hub_client.h>
 
diff --git a/libs/vr/libdisplay/Android.mk b/libs/vr/libdisplay/Android.mk
index f0e62df..6a9458c 100644
--- a/libs/vr/libdisplay/Android.mk
+++ b/libs/vr/libdisplay/Android.mk
@@ -46,7 +46,8 @@
 	libui \
 	libgui \
 	libhardware \
-	libsync
+	libsync \
+	libnativewindow \
 
 staticLibraries := \
 	libbufferhub \
diff --git a/libs/vr/libdisplay/display_manager_client.cpp b/libs/vr/libdisplay/display_manager_client.cpp
index f454b08..8fd3627 100644
--- a/libs/vr/libdisplay/display_manager_client.cpp
+++ b/libs/vr/libdisplay/display_manager_client.cpp
@@ -41,6 +41,23 @@
   delete client;
 }
 
+int dvrDisplayManagerClientGetEventFd(DvrDisplayManagerClient* client) {
+  return client->client->event_fd();
+}
+
+int dvrDisplayManagerClientTranslateEpollEventMask(
+    DvrDisplayManagerClient* client, int in_events, int* out_events) {
+  auto result = client->client->GetChannel()->GetEventMask(in_events);
+
+  if (!result) {
+    return -EIO;
+  }
+
+  *out_events = result.get();
+
+  return 0;
+}
+
 int dvrDisplayManagerClientGetSurfaceList(
     DvrDisplayManagerClient* client,
     DvrDisplayManagerClientSurfaceList** surface_list) {
diff --git a/libs/vr/libdisplay/include/private/dvr/display_manager_client.h b/libs/vr/libdisplay/include/private/dvr/display_manager_client.h
index f28c1e4..8ba9175 100644
--- a/libs/vr/libdisplay/include/private/dvr/display_manager_client.h
+++ b/libs/vr/libdisplay/include/private/dvr/display_manager_client.h
@@ -19,6 +19,21 @@
 
 void dvrDisplayManagerClientDestroy(DvrDisplayManagerClient* client);
 
+// Return an event fd for checking if there was an event on the server
+// Note that the only event which will be flagged is POLLIN. You must use
+// dvrDisplayManagerClientTranslateEpollEventMask in order to get the real
+// event flags.
+// @return the fd
+int dvrDisplayManagerClientGetEventFd(DvrDisplayManagerClient* client);
+
+// Once you have received an epoll event, you must translate it to its true
+// flags. This is a workaround for working with UDS.
+// @param in_events pass in the epoll revents that were initially returned
+// @param on success, this value will be overwritten with the true epoll values
+// @return 0 on success, non-zero otherwise
+int dvrDisplayManagerClientTranslateEpollEventMask(
+    DvrDisplayManagerClient* client, int in_events, int* out_events);
+
 // If successful, populates |surface_list| with a list of application
 // surfaces the display is currently using.
 //
diff --git a/libs/vr/libdisplay/include/private/dvr/display_manager_client_impl.h b/libs/vr/libdisplay/include/private/dvr/display_manager_client_impl.h
index 645ccce..4ecd8d4 100644
--- a/libs/vr/libdisplay/include/private/dvr/display_manager_client_impl.h
+++ b/libs/vr/libdisplay/include/private/dvr/display_manager_client_impl.h
@@ -20,6 +20,9 @@
   int GetSurfaceBuffers(
       int surface_id, std::vector<std::unique_ptr<BufferConsumer>>* consumers);
 
+  using Client::event_fd;
+  using Client::GetChannel;
+
  private:
   friend BASE;
 
diff --git a/libs/vr/libeds/Android.mk b/libs/vr/libeds/Android.mk
index fd2c56e..d2e6526 100644
--- a/libs/vr/libeds/Android.mk
+++ b/libs/vr/libeds/Android.mk
@@ -37,7 +37,6 @@
 	libGLESv1_CM \
 	libGLESv2 \
 	libvulkan \
-	libandroid
 
 staticLibraries := \
 	libdisplay \
diff --git a/libs/vr/libsensor/Android.mk b/libs/vr/libsensor/Android.mk
index 89abcb0..8c7ad43 100644
--- a/libs/vr/libsensor/Android.mk
+++ b/libs/vr/libsensor/Android.mk
@@ -32,7 +32,6 @@
 	libhardware \
 	liblog \
 	libutils \
-	libandroid \
 
 include $(CLEAR_VARS)
 LOCAL_SRC_FILES := $(sourceFiles)
diff --git a/libs/vr/libsensor/tests/sensor_app_tests.cpp b/libs/vr/libsensor/tests/sensor_app_tests.cpp
index 0f5bf00..64c9864 100644
--- a/libs/vr/libsensor/tests/sensor_app_tests.cpp
+++ b/libs/vr/libsensor/tests/sensor_app_tests.cpp
@@ -1,6 +1,7 @@
 #include <EGL/egl.h>
 #include <GLES2/gl2.h>
 #include <math.h>
+#include <inttypes.h>
 
 #include <dvr/graphics.h>
 #include <dvr/pose_client.h>
diff --git a/libs/vr/libvrflinger/Android.mk b/libs/vr/libvrflinger/Android.mk
index 1706f30..3450788 100644
--- a/libs/vr/libvrflinger/Android.mk
+++ b/libs/vr/libvrflinger/Android.mk
@@ -56,6 +56,7 @@
 	libcutils \
 	liblog \
 	libhardware \
+	libnativewindow \
 	libutils \
 	libEGL \
 	libGLESv1_CM \
diff --git a/opengl/include/EGL/eglext.h b/opengl/include/EGL/eglext.h
index 0ac74db..740ead3 100644
--- a/opengl/include/EGL/eglext.h
+++ b/opengl/include/EGL/eglext.h
@@ -623,9 +623,9 @@
 #define EGL_ANDROID_get_native_client_buffer 1
 struct AHardwareBuffer;
 #ifdef EGL_EGLEXT_PROTOTYPES
-EGLAPI EGLClientBuffer eglGetNativeClientBufferANDROID (const AHardwareBuffer *buffer);
+EGLAPI EGLClientBuffer eglGetNativeClientBufferANDROID (const struct AHardwareBuffer *buffer);
 #else
-typedef EGLClientBuffer (EGLAPIENTRYP PFNEGLGETNATIVECLIENTBUFFERANDROID) (const AHardwareBuffer *buffer);
+typedef EGLClientBuffer (EGLAPIENTRYP PFNEGLGETNATIVECLIENTBUFFERANDROID) (const struct AHardwareBuffer *buffer);
 #endif
 #endif
 
diff --git a/opengl/libs/Android.bp b/opengl/libs/Android.bp
index 865313c..4fa6a33 100644
--- a/opengl/libs/Android.bp
+++ b/opengl/libs/Android.bp
@@ -80,6 +80,7 @@
         "libbinder",
         "libutils",
         "libui",
+        "libnativewindow",
     ],
 }
 
diff --git a/opengl/libs/EGL/Loader.cpp b/opengl/libs/EGL/Loader.cpp
index b1ca13d..9aedc61 100644
--- a/opengl/libs/EGL/Loader.cpp
+++ b/opengl/libs/EGL/Loader.cpp
@@ -17,26 +17,21 @@
 //#define LOG_NDEBUG 0
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
-#include <array>
-#include <ctype.h>
+#include "Loader.h"
+
 #include <dirent.h>
 #include <dlfcn.h>
-#include <errno.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
 
 #include <android/dlext.h>
 #include <cutils/properties.h>
 #include <log/log.h>
+
+#include <utils/String8.h>
 #include <utils/Trace.h>
+
 #include <ui/GraphicsEnv.h>
 
-#include <EGL/egl.h>
-
 #include "egldefs.h"
-#include "Loader.h"
 
 // ----------------------------------------------------------------------------
 namespace android {
@@ -437,10 +432,10 @@
     return android_dlopen_ext(path, mode, info);
 }
 
-static const std::array<const char*, 2> HAL_SUBNAME_KEY_PROPERTIES = {{
+static const char* HAL_SUBNAME_KEY_PROPERTIES[2] = {
     "ro.hardware.egl",
     "ro.board.platform",
-}};
+};
 
 static void* load_updated_driver(const char* kind, android_namespace_t* ns) {
     ATRACE_CALL();
@@ -454,10 +449,10 @@
         if (property_get(key, prop, nullptr) > 0) {
             String8 name;
             name.appendFormat("lib%s_%s.so", kind, prop);
-            so = do_android_dlopen_ext(name.string(), RTLD_LOCAL | RTLD_NOW,
-                    &dlextinfo);
-            if (so)
+            so = do_android_dlopen_ext(name.string(), RTLD_LOCAL | RTLD_NOW, &dlextinfo);
+            if (so) {
                 return so;
+            }
         }
     }
     return nullptr;
diff --git a/opengl/libs/EGL/Loader.h b/opengl/libs/EGL/Loader.h
index b0743a5..2dd4206 100644
--- a/opengl/libs/EGL/Loader.h
+++ b/opengl/libs/EGL/Loader.h
@@ -17,13 +17,10 @@
 #ifndef ANDROID_EGL_LOADER_H
 #define ANDROID_EGL_LOADER_H
 
-#include <ctype.h>
-#include <string.h>
-#include <errno.h>
+#include <stdint.h>
 
 #include <utils/Errors.h>
 #include <utils/Singleton.h>
-#include <utils/String8.h>
 
 #include <EGL/egl.h>
 
@@ -33,12 +30,10 @@
 
 struct egl_connection_t;
 
-class Loader : public Singleton<Loader>
-{
+class Loader : public Singleton<Loader> {
     friend class Singleton<Loader>;
 
-    typedef __eglMustCastToProperFunctionPointerType (*getProcAddressType)(
-            const char*);
+    typedef __eglMustCastToProperFunctionPointerType (* getProcAddressType)(const char*);
    
     enum {
         EGL         = 0x01,
diff --git a/opengl/libs/EGL/egl.cpp b/opengl/libs/EGL/egl.cpp
index ee83ada..34b0ba2 100644
--- a/opengl/libs/EGL/egl.cpp
+++ b/opengl/libs/EGL/egl.cpp
@@ -14,30 +14,26 @@
  ** limitations under the License.
  */
 
-#include <ctype.h>
 #include <stdlib.h>
-#include <string.h>
 
 #include <hardware/gralloc.h>
-#include <system/window.h>
 
 #include <EGL/egl.h>
-#include <EGL/eglext.h>
 
 #include <cutils/atomic.h>
 #include <cutils/properties.h>
+
 #include <log/log.h>
+
 #include <utils/CallStack.h>
-#include <utils/String8.h>
 
 #include "../egl_impl.h"
 
-#include "egl_tls.h"
 #include "egldefs.h"
-#include "Loader.h"
-
+#include "egl_tls.h"
 #include "egl_display.h"
 #include "egl_object.h"
+#include "Loader.h"
 
 typedef __eglMustCastToProperFunctionPointerType EGLFuncPointer;
 
diff --git a/opengl/libs/EGL/eglApi.cpp b/opengl/libs/EGL/eglApi.cpp
index f15c29d..e52713f 100644
--- a/opengl/libs/EGL/eglApi.cpp
+++ b/opengl/libs/EGL/eglApi.cpp
@@ -22,15 +22,14 @@
 #include <string.h>
 
 #include <hardware/gralloc1.h>
-#include <system/window.h>
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 
 #include <android/hardware_buffer.h>
-#include <cutils/atomic.h>
+#include <private/android/AHardwareBufferHelpers.h>
+
 #include <cutils/compiler.h>
-#include <cutils/memory.h>
 #include <cutils/properties.h>
 #include <log/log.h>
 
@@ -38,22 +37,21 @@
 
 #include <ui/GraphicBuffer.h>
 
+
 #include <utils/KeyedVector.h>
-#include <utils/SortedVector.h>
 #include <utils/String8.h>
 #include <utils/Trace.h>
+#include <utils/Thread.h>
 
 #include "binder/Binder.h"
 #include "binder/Parcel.h"
 #include "binder/IServiceManager.h"
 
 #include "../egl_impl.h"
-#include "../hooks.h"
 
 #include "egl_display.h"
 #include "egl_object.h"
 #include "egl_tls.h"
-#include "egldefs.h"
 
 using namespace android;
 
@@ -81,7 +79,11 @@
  *
  * NOTE: Both strings MUST have a single space as the last character.
  */
-extern char const * const gBuiltinExtensionString =
+
+extern char const * const gBuiltinExtensionString;
+extern char const * const gExtensionString;
+
+char const * const gBuiltinExtensionString =
         "EGL_KHR_get_all_proc_addresses "
         "EGL_ANDROID_presentation_time "
         "EGL_KHR_swap_buffers_with_damage "
@@ -90,7 +92,8 @@
         "EGL_ANDROID_front_buffer_auto_refresh "
         "EGL_ANDROID_get_frame_timestamps "
         ;
-extern char const * const gExtensionString  =
+
+char const * const gExtensionString  =
         "EGL_KHR_image "                        // mandatory
         "EGL_KHR_image_base "                   // mandatory
         "EGL_KHR_image_pixmap "
@@ -123,6 +126,7 @@
         "EGL_EXT_yuv_surface "
         "EGL_EXT_protected_content "
         "EGL_IMG_context_priority "
+        "EGL_KHR_no_config_context "
         ;
 
 // extensions not exposed to applications but used by the ANDROID system
@@ -301,7 +305,7 @@
     clearError();
 
     egl_display_ptr dp = get_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 
     EGLBoolean res = dp->initialize(major, minor);
 
@@ -317,7 +321,7 @@
     clearError();
 
     egl_display_ptr dp = get_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 
     EGLBoolean res = dp->terminate();
 
@@ -338,7 +342,7 @@
     if (!dp) return EGL_FALSE;
 
     if (num_config==0) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
     }
 
     EGLBoolean res = EGL_FALSE;
@@ -363,7 +367,7 @@
     if (!dp) return EGL_FALSE;
 
     if (num_config==0) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
     }
 
     EGLBoolean res = EGL_FALSE;
@@ -395,6 +399,8 @@
                         case EGL_CONFIG_CAVEAT:
                             attribCaveat = &attrib_list[attribCount];
                             break;
+                        default:
+                            break;
                     }
                     attribCount++;
                 }
@@ -490,14 +496,8 @@
         cnx->egl.eglGetConfigAttrib(iDpy, config, EGL_COLOR_COMPONENT_TYPE_EXT,
                                     &componentType);
 
-        // by default, just pick appropriate RGBA
-        EGLint format = HAL_PIXEL_FORMAT_RGBA_8888;
-        if (dp->haveExtension("EGL_EXT_pixel_format_float") &&
-            (componentType == EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT)) {
-            format = HAL_PIXEL_FORMAT_RGBA_FP16;
-        }
+        EGLint format;
         android_dataspace dataSpace = HAL_DATASPACE_UNKNOWN;
-
         EGLint a = 0;
         EGLint r, g, b;
         r = g = b = 0;
@@ -630,7 +630,7 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t * const s = get_surface(surface);
     EGLBoolean result = s->cnx->egl.eglDestroySurface(dp->disp.dpy, s->surface);
@@ -650,7 +650,7 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     return s->cnx->egl.eglQuerySurface(
@@ -669,7 +669,6 @@
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
         setError(EGL_BAD_SURFACE, EGL_FALSE);
-        return;
     }
 }
 
@@ -728,7 +727,7 @@
 
     ContextRef _c(dp.get(), ctx);
     if (!_c.get())
-        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
 
     egl_context_t * const c = get_context(ctx);
     EGLBoolean result = c->cnx->egl.eglDestroyContext(dp->disp.dpy, c->context);
@@ -744,14 +743,14 @@
     clearError();
 
     egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 
     // If ctx is not EGL_NO_CONTEXT, read is not EGL_NO_SURFACE, or draw is not
     // EGL_NO_SURFACE, then an EGL_NOT_INITIALIZED error is generated if dpy is
     // a valid but uninitialized display.
     if ( (ctx != EGL_NO_CONTEXT) || (read != EGL_NO_SURFACE) ||
          (draw != EGL_NO_SURFACE) ) {
-        if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
+        if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
     }
 
     // get a reference to the object passed in
@@ -762,7 +761,7 @@
     // validate the context (if not EGL_NO_CONTEXT)
     if ((ctx != EGL_NO_CONTEXT) && !_c.get()) {
         // EGL_NO_CONTEXT is valid
-        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
     }
 
     // these are the underlying implementation's object
@@ -785,7 +784,7 @@
         // no context given, use the implementation of the current context
         if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
             // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
-            return setError(EGL_BAD_MATCH, EGL_FALSE);
+            return setError(EGL_BAD_MATCH, (EGLBoolean)EGL_FALSE);
         }
         if (cur_c == NULL) {
             // no current context
@@ -796,14 +795,14 @@
 
     // retrieve the underlying implementation's draw EGLSurface
     if (draw != EGL_NO_SURFACE) {
-        if (!_d.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        if (!_d.get()) return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
         d = get_surface(draw);
         impl_draw = d->surface;
     }
 
     // retrieve the underlying implementation's read EGLSurface
     if (read != EGL_NO_SURFACE) {
-        if (!_r.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        if (!_r.get()) return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
         r = get_surface(read);
         impl_read = r->surface;
     }
@@ -827,7 +826,7 @@
     } else {
         // this will ALOGE the error
         egl_connection_t* const cnx = &gEGLImpl;
-        result = setError(cnx->egl.eglGetError(), EGL_FALSE);
+        result = setError(cnx->egl.eglGetError(), (EGLBoolean)EGL_FALSE);
     }
     return result;
 }
@@ -842,7 +841,7 @@
     if (!dp) return EGL_FALSE;
 
     ContextRef _c(dp.get(), ctx);
-    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+    if (!_c.get()) return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
 
     egl_context_t * const c = get_context(ctx);
     return c->cnx->egl.eglQueryContext(
@@ -903,7 +902,7 @@
 
     egl_connection_t* const cnx = &gEGLImpl;
     if (!cnx->dso)
-        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
 
     return cnx->egl.eglWaitGL();
 }
@@ -914,7 +913,7 @@
 
     egl_connection_t* const cnx = &gEGLImpl;
     if (!cnx->dso)
-        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
 
     return cnx->egl.eglWaitNative(engine);
 }
@@ -1042,7 +1041,7 @@
             thread->mQueue.push_back(sync);
             thread->mCondition.signal();
             thread->mFramesQueued++;
-            ATRACE_INT("GPU Frames Outstanding", thread->mQueue.size());
+            ATRACE_INT("GPU Frames Outstanding", int32_t(thread->mQueue.size()));
         }
     }
 
@@ -1076,7 +1075,7 @@
             Mutex::Autolock lock(mMutex);
             mQueue.removeAt(0);
             mFramesCompleted++;
-            ATRACE_INT("GPU Frames Outstanding", mQueue.size());
+            ATRACE_INT("GPU Frames Outstanding", int32_t(mQueue.size()));
         }
         return true;
     }
@@ -1099,7 +1098,7 @@
 
     SurfaceRef _s(dp.get(), draw);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(draw);
 
@@ -1164,7 +1163,7 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     return s->cnx->egl.eglCopyBuffers(dp->disp.dpy, s->surface, target);
@@ -1182,7 +1181,7 @@
     // If we want to support EGL_EXT_client_extensions later, we can return
     // the client extension string here instead.
     if (dpy == EGL_NO_DISPLAY && name == EGL_EXTENSIONS)
-        return setErrorQuiet(EGL_BAD_DISPLAY, nullptr);
+        return setErrorQuiet(EGL_BAD_DISPLAY, (const char*)0);
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) return (const char *) NULL;
@@ -1196,6 +1195,8 @@
             return dp->getExtensionString();
         case EGL_CLIENT_APIS:
             return dp->getClientApiString();
+        default:
+            break;
     }
     return setError(EGL_BAD_PARAMETER, (const char *)0);
 }
@@ -1216,6 +1217,8 @@
             return dp->disp.queryString.extensions;
         case EGL_CLIENT_APIS:
             return dp->disp.queryString.clientApi;
+        default:
+            break;
     }
     return setError(EGL_BAD_PARAMETER, (const char *)0);
 }
@@ -1234,7 +1237,7 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t * const s = get_surface(surface);
 
@@ -1242,27 +1245,23 @@
         if (!s->win.get()) {
             setError(EGL_BAD_SURFACE, EGL_FALSE);
         }
-        int err = native_window_set_auto_refresh(s->win.get(),
-            value ? true : false);
-        return (err == NO_ERROR) ? EGL_TRUE :
-            setError(EGL_BAD_SURFACE, EGL_FALSE);
+        int err = native_window_set_auto_refresh(s->win.get(), value ? true : false);
+        return (err == NO_ERROR) ? EGL_TRUE : setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     if (attribute == EGL_TIMESTAMPS_ANDROID) {
         if (!s->win.get()) {
-            return setError(EGL_BAD_SURFACE, EGL_FALSE);
+            return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
         }
-        int err = native_window_enable_frame_timestamps(
-                s->win.get(), value ? true : false);
-        return (err == NO_ERROR) ? EGL_TRUE :
-            setError(EGL_BAD_SURFACE, EGL_FALSE);
+        int err = native_window_enable_frame_timestamps(s->win.get(), value ? true : false);
+        return (err == NO_ERROR) ? EGL_TRUE : setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     if (s->cnx->egl.eglSurfaceAttrib) {
         return s->cnx->egl.eglSurfaceAttrib(
                 dp->disp.dpy, s->surface, attribute, value);
     }
-    return setError(EGL_BAD_SURFACE, EGL_FALSE);
+    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 }
 
 EGLBoolean eglBindTexImage(
@@ -1275,14 +1274,14 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     if (s->cnx->egl.eglBindTexImage) {
         return s->cnx->egl.eglBindTexImage(
                 dp->disp.dpy, s->surface, buffer);
     }
-    return setError(EGL_BAD_SURFACE, EGL_FALSE);
+    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 }
 
 EGLBoolean eglReleaseTexImage(
@@ -1295,14 +1294,14 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     if (s->cnx->egl.eglReleaseTexImage) {
         return s->cnx->egl.eglReleaseTexImage(
                 dp->disp.dpy, s->surface, buffer);
     }
-    return setError(EGL_BAD_SURFACE, EGL_FALSE);
+    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 }
 
 EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
@@ -1332,7 +1331,7 @@
 
     egl_connection_t* const cnx = &gEGLImpl;
     if (!cnx->dso)
-        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
 
     EGLBoolean res;
     if (cnx->egl.eglWaitClient) {
@@ -1348,7 +1347,7 @@
     clearError();
 
     if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
     }
 
     // bind this API on all EGLs
@@ -1365,7 +1364,7 @@
     clearError();
 
     if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
     }
 
     egl_connection_t* const cnx = &gEGLImpl;
@@ -1423,14 +1422,14 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     if (s->cnx->egl.eglLockSurfaceKHR) {
         return s->cnx->egl.eglLockSurfaceKHR(
                 dp->disp.dpy, s->surface, attrib_list);
     }
-    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 }
 
 EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface)
@@ -1442,13 +1441,13 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     if (s->cnx->egl.eglUnlockSurfaceKHR) {
         return s->cnx->egl.eglUnlockSurfaceKHR(dp->disp.dpy, s->surface);
     }
-    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 }
 
 EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
@@ -1546,7 +1545,7 @@
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) return EGL_FALSE;
 
-    EGLBoolean result = EGL_FALSE;
+    EGLint result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
     if (cnx->dso && cnx->egl.eglClientWaitSyncKHR) {
         result = cnx->egl.eglClientWaitSyncKHR(
@@ -1991,9 +1990,7 @@
 
     if (!buffer) return setError(EGL_BAD_PARAMETER, (EGLClientBuffer)0);
 
-    // FIXME: remove this dangerous reinterpret_cast.
-    const GraphicBuffer* graphicBuffer =
-            reinterpret_cast<const GraphicBuffer*>(buffer);
+    const GraphicBuffer* graphicBuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
     return static_cast<EGLClientBuffer>(graphicBuffer->getNativeBuffer());
 }
 
@@ -2005,7 +2002,7 @@
     clearError();
 
     if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLuint64NV)EGL_FALSE);
     }
 
     EGLuint64NV ret = 0;
@@ -2015,7 +2012,7 @@
         return cnx->egl.eglGetSystemTimeFrequencyNV();
     }
 
-    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
+    return setErrorQuiet(EGL_BAD_DISPLAY, (EGLuint64NV)0);
 }
 
 EGLuint64NV eglGetSystemTimeNV()
@@ -2023,7 +2020,7 @@
     clearError();
 
     if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLuint64NV)EGL_FALSE);
     }
 
     EGLuint64NV ret = 0;
@@ -2033,7 +2030,7 @@
         return cnx->egl.eglGetSystemTimeNV();
     }
 
-    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
+    return setErrorQuiet(EGL_BAD_DISPLAY, (EGLuint64NV)0);
 }
 
 // ----------------------------------------------------------------------------
@@ -2071,18 +2068,18 @@
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) {
-        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
     }
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     egl_surface_t const * const s = get_surface(surface);
 
     if (!s->win.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     uint64_t nextFrameId = 0;
@@ -2092,7 +2089,7 @@
         // This should not happen. Return an error that is not in the spec
         // so it's obvious something is very wrong.
         ALOGE("eglGetNextFrameId: Unexpected error.");
-        return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
+        return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
     }
 
     *frameId = nextFrameId;
@@ -2106,18 +2103,18 @@
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) {
-        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
     }
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     egl_surface_t const * const s = get_surface(surface);
 
     if (!s->win.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     nsecs_t* compositeDeadline = nullptr;
@@ -2136,7 +2133,7 @@
                 compositeToPresentLatency = &values[i];
                 break;
             default:
-                return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+                return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
         }
     }
 
@@ -2147,12 +2144,12 @@
       case NO_ERROR:
         return EGL_TRUE;
       case INVALID_OPERATION:
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
       default:
         // This should not happen. Return an error that is not in the spec
         // so it's obvious something is very wrong.
         ALOGE("eglGetCompositorTiming: Unexpected error.");
-        return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
+        return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
     }
 }
 
@@ -2163,19 +2160,19 @@
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) {
-        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
     }
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     egl_surface_t const * const s = get_surface(surface);
 
     ANativeWindow* window = s->win.get();
     if (!window) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     switch (name) {
@@ -2196,18 +2193,18 @@
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) {
-        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
     }
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     egl_surface_t const * const s = get_surface(surface);
 
     if (!s->win.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     nsecs_t* requestedPresentTime = nullptr;
@@ -2254,7 +2251,7 @@
                 releaseTime = &values[i];
                 break;
             default:
-                return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+                return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
         }
     }
 
@@ -2264,19 +2261,19 @@
             displayRetireTime, dequeueReadyTime, releaseTime);
 
     switch (ret) {
-      case NO_ERROR:
-        return EGL_TRUE;
-      case NAME_NOT_FOUND:
-        return setError(EGL_BAD_ACCESS, EGL_FALSE);
-      case INVALID_OPERATION:
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
-      case BAD_VALUE:
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
-      default:
-        // This should not happen. Return an error that is not in the spec
-        // so it's obvious something is very wrong.
-        ALOGE("eglGetFrameTimestamps: Unexpected error.");
-        return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
+        case NO_ERROR:
+            return EGL_TRUE;
+        case NAME_NOT_FOUND:
+            return setError(EGL_BAD_ACCESS, (EGLBoolean)EGL_FALSE);
+        case INVALID_OPERATION:
+            return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+        case BAD_VALUE:
+            return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
+        default:
+            // This should not happen. Return an error that is not in the spec
+            // so it's obvious something is very wrong.
+            ALOGE("eglGetFrameTimestamps: Unexpected error.");
+            return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
     }
 }
 
@@ -2287,19 +2284,19 @@
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) {
-        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
     }
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     egl_surface_t const * const s = get_surface(surface);
 
     ANativeWindow* window = s->win.get();
     if (!window) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     switch (timestamp) {
@@ -2317,14 +2314,12 @@
             return EGL_TRUE;
         case EGL_DISPLAY_PRESENT_TIME_ANDROID: {
             int value = 0;
-            window->query(window,
-                    NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_PRESENT, &value);
+            window->query(window, NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_PRESENT, &value);
             return value == 0 ? EGL_FALSE : EGL_TRUE;
         }
         case EGL_DISPLAY_RETIRE_TIME_ANDROID: {
             int value = 0;
-            window->query(window,
-                    NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_RETIRE, &value);
+            window->query(window, NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_RETIRE, &value);
             return value == 0 ? EGL_FALSE : EGL_TRUE;
         }
         default:
diff --git a/opengl/libs/EGL/egl_cache.cpp b/opengl/libs/EGL/egl_cache.cpp
index 1fe322d..e46716c 100644
--- a/opengl/libs/EGL/egl_cache.cpp
+++ b/opengl/libs/EGL/egl_cache.cpp
@@ -14,18 +14,17 @@
  ** limitations under the License.
  */
 
+#include "egl_cache.h"
+
 #include "../egl_impl.h"
 
-#include "egl_cache.h"
 #include "egl_display.h"
-#include "egldefs.h"
 
-#include <fcntl.h>
 #include <inttypes.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
+
+#include <utils/Thread.h>
 
 // Cache size limits.
 static const size_t maxKeySize = 12 * 1024;
@@ -87,7 +86,7 @@
         bool atStart = !strncmp(BC_EXT_STR " ", exts, bcExtLen+1);
         bool atEnd = (bcExtLen+1) < extsLen &&
                 !strcmp(" " BC_EXT_STR, exts + extsLen - (bcExtLen+1));
-        bool inMiddle = strstr(exts, " " BC_EXT_STR " ");
+        bool inMiddle = strstr(exts, " " BC_EXT_STR " ") != nullptr;
         if (equal || atStart || atEnd || inMiddle) {
             PFNEGLSETBLOBCACHEFUNCSANDROIDPROC eglSetBlobCacheFuncsANDROID;
             eglSetBlobCacheFuncsANDROID =
diff --git a/opengl/libs/EGL/egl_cache.h b/opengl/libs/EGL/egl_cache.h
index 8760009..e7f1712 100644
--- a/opengl/libs/EGL/egl_cache.h
+++ b/opengl/libs/EGL/egl_cache.h
@@ -21,6 +21,7 @@
 #include <EGL/eglext.h>
 
 #include <utils/BlobCache.h>
+#include <utils/Mutex.h>
 #include <utils/String8.h>
 #include <utils/StrongPointer.h>
 
diff --git a/opengl/libs/EGL/egl_display.cpp b/opengl/libs/EGL/egl_display.cpp
index d7df40c..c804fa7 100644
--- a/opengl/libs/EGL/egl_display.cpp
+++ b/opengl/libs/EGL/egl_display.cpp
@@ -17,16 +17,16 @@
 #define __STDC_LIMIT_MACROS 1
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
-#include <string.h>
+#include "egl_display.h"
 
 #include "../egl_impl.h"
 
 #include "egl_cache.h"
-#include "egl_display.h"
 #include "egl_object.h"
 #include "egl_tls.h"
 #include "Loader.h"
 #include <cutils/properties.h>
+
 #include <utils/Trace.h>
 
 // ----------------------------------------------------------------------------
diff --git a/opengl/libs/EGL/egl_display.h b/opengl/libs/EGL/egl_display.h
index e17558c..f5e7294 100644
--- a/opengl/libs/EGL/egl_display.h
+++ b/opengl/libs/EGL/egl_display.h
@@ -18,16 +18,16 @@
 #define ANDROID_EGL_DISPLAY_H
 
 
-#include <ctype.h>
 #include <stdint.h>
-#include <stdlib.h>
+#include <stddef.h>
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 
 #include <cutils/compiler.h>
 #include <utils/SortedVector.h>
-#include <utils/threads.h>
+#include <utils/Condition.h>
+#include <utils/Mutex.h>
 #include <utils/String8.h>
 
 #include "egldefs.h"
diff --git a/opengl/libs/EGL/egl_object.cpp b/opengl/libs/EGL/egl_object.cpp
index 7fc5609..b553d71 100644
--- a/opengl/libs/EGL/egl_object.cpp
+++ b/opengl/libs/EGL/egl_object.cpp
@@ -14,19 +14,10 @@
  ** limitations under the License.
  */
 
-#include <string>
+#include "egl_object.h"
+
 #include <sstream>
 
-#include <ctype.h>
-#include <stdint.h>
-#include <stdlib.h>
-
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-
-#include <utils/threads.h>
-
-#include "egl_object.h"
 
 // ----------------------------------------------------------------------------
 namespace android {
diff --git a/opengl/libs/EGL/egl_object.h b/opengl/libs/EGL/egl_object.h
index 8ceba1d..f4012ab 100644
--- a/opengl/libs/EGL/egl_object.h
+++ b/opengl/libs/EGL/egl_object.h
@@ -17,15 +17,13 @@
 #ifndef ANDROID_EGL_OBJECT_H
 #define ANDROID_EGL_OBJECT_H
 
-#include <atomic>
-#include <ctype.h>
 #include <stdint.h>
-#include <stdlib.h>
+#include <stddef.h>
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 
-#include <utils/threads.h>
+#include <utils/StrongPointer.h>
 #include <utils/String8.h>
 #include <utils/Vector.h>
 
@@ -62,8 +60,8 @@
     template <typename N, typename T>
     class LocalRef {
         egl_object_t* ref;
-        LocalRef();
-        explicit LocalRef(const LocalRef* rhs);
+        LocalRef() = delete;
+        LocalRef(const LocalRef* rhs) = delete;
     public:
         ~LocalRef();
         explicit LocalRef(egl_object_t* rhs);
diff --git a/opengl/libs/EGL/egl_tls.cpp b/opengl/libs/EGL/egl_tls.cpp
index 6de5f27..ca8684e 100644
--- a/opengl/libs/EGL/egl_tls.cpp
+++ b/opengl/libs/EGL/egl_tls.cpp
@@ -14,16 +14,14 @@
  ** limitations under the License.
  */
 
-#include <pthread.h>
+#include "egl_tls.h"
+
 #include <stdlib.h>
 
 #include <cutils/properties.h>
 #include <log/log.h>
 #include <utils/CallStack.h>
 
-#include <EGL/egl.h>
-
-#include "egl_tls.h"
 
 namespace android {
 
@@ -31,7 +29,7 @@
 pthread_once_t egl_tls_t::sOnceKey = PTHREAD_ONCE_INIT;
 
 egl_tls_t::egl_tls_t()
-    : error(EGL_SUCCESS), ctx(0), logCallWithNoContext(EGL_TRUE) {
+    : error(EGL_SUCCESS), ctx(0), logCallWithNoContext(true) {
 }
 
 const char *egl_tls_t::egl_strerror(EGLint err) {
@@ -85,11 +83,12 @@
 
 bool egl_tls_t::logNoContextCall() {
     egl_tls_t* tls = getTLS();
-    if (tls->logCallWithNoContext == true) {
+    if (tls->logCallWithNoContext) {
         tls->logCallWithNoContext = false;
         return true;
     }
     return false;
+
 }
 
 egl_tls_t* egl_tls_t::getTLS() {
diff --git a/opengl/libs/EGL/egl_tls.h b/opengl/libs/EGL/egl_tls.h
index 00eae0b..9feae68 100644
--- a/opengl/libs/EGL/egl_tls.h
+++ b/opengl/libs/EGL/egl_tls.h
@@ -17,11 +17,9 @@
 #ifndef ANDROID_EGL_TLS_H
 #define ANDROID_EGL_TLS_H
 
-#include <pthread.h>
-
 #include <EGL/egl.h>
 
-#include "egldefs.h"
+#include <pthread.h>
 
 // ----------------------------------------------------------------------------
 namespace android {
@@ -36,7 +34,7 @@
 
     EGLint      error;
     EGLContext  ctx;
-    EGLBoolean  logCallWithNoContext;
+    bool        logCallWithNoContext;
 
     egl_tls_t();
     static void validateTLSKey();
diff --git a/opengl/libs/egl_impl.h b/opengl/libs/egl_impl.h
index c0990ec..a8855ef 100644
--- a/opengl/libs/egl_impl.h
+++ b/opengl/libs/egl_impl.h
@@ -17,8 +17,6 @@
 #ifndef ANDROID_EGL_IMPL_H
 #define ANDROID_EGL_IMPL_H
 
-#include <ctype.h>
-
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 #include <EGL/eglplatform.h>
@@ -30,8 +28,7 @@
 // ----------------------------------------------------------------------------
 
 EGLAPI const GLubyte * egl_get_string_for_current_context(GLenum name);
-EGLAPI const GLubyte * egl_get_string_for_current_context(GLenum name,
-                                                          GLuint index);
+EGLAPI const GLubyte * egl_get_string_for_current_context(GLenum name, GLuint index);
 EGLAPI GLint egl_get_num_extensions_for_current_context();
 
 // ----------------------------------------------------------------------------
diff --git a/services/sensorservice/SensorDevice.cpp b/services/sensorservice/SensorDevice.cpp
index 3edd50b..7bd495f 100644
--- a/services/sensorservice/SensorDevice.cpp
+++ b/services/sensorservice/SensorDevice.cpp
@@ -13,21 +13,18 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-#include <inttypes.h>
-#include <math.h>
-#include <stdint.h>
-#include <sys/types.h>
+#include "SensorDevice.h"
+#include "SensorService.h"
 
 #include <android-base/logging.h>
+#include <sensors/convert.h>
 #include <utils/Atomic.h>
 #include <utils/Errors.h>
 #include <utils/Singleton.h>
 
-#include "SensorDevice.h"
-#include "SensorService.h"
-
-#include <sensors/convert.h>
+#include <chrono>
+#include <cinttypes>
+#include <thread>
 
 using android::hardware::hidl_vec;
 
@@ -55,13 +52,38 @@
 }
 
 SensorDevice::SensorDevice() {
-    mSensors = ISensors::getService();
+    // SensorDevice may wait upto 100ms * 10 = 1s for hidl service.
+    constexpr auto RETRY_DELAY = std::chrono::milliseconds(100);
+    size_t retry = 10;
 
-    if (mSensors == NULL) {
-        return;
+    while (true) {
+        int initStep = 0;
+        mSensors = ISensors::getService();
+        if (mSensors != nullptr) {
+            ++initStep;
+            // Poke ISensor service. If it has lingering connection from previous generation of
+            // system server, it will kill itself. There is no intention to handle the poll result,
+            // which will be done since the size is 0.
+            if(mSensors->poll(0, [](auto, const auto &, const auto &) {}).isOk()) {
+                // ok to continue
+                break;
+            }
+            // hidl service is restarting, pointer is invalid.
+            mSensors = nullptr;
+        }
+
+        if (--retry <= 0) {
+            ALOGE("Cannot connect to ISensors hidl service!");
+            return;
+        }
+        // Delay 100ms before retry, hidl service is expected to come up in short time after
+        // crash.
+        ALOGI("%s unsuccessful, try again soon (remaining retry %zu).",
+                (initStep == 0) ? "getService()" : "poll() check", retry);
+        std::this_thread::sleep_for(RETRY_DELAY);
     }
 
-    mSensors->getSensorsList(
+    checkReturn(mSensors->getSensorsList(
             [&](const auto &list) {
                 const size_t count = list.size();
 
@@ -74,19 +96,19 @@
 
                     mActivationCount.add(list[i].sensorHandle, model);
 
-                    mSensors->activate(list[i].sensorHandle, 0 /* enabled */);
+                    checkReturn(mSensors->activate(list[i].sensorHandle, 0 /* enabled */));
                 }
-            });
+            }));
 
     mIsDirectReportSupported =
-           (mSensors->unregisterDirectChannel(-1) != Result::INVALID_OPERATION);
+           (checkReturn(mSensors->unregisterDirectChannel(-1)) != Result::INVALID_OPERATION);
 }
 
 void SensorDevice::handleDynamicSensorConnection(int handle, bool connected) {
     if (connected) {
         Info model;
         mActivationCount.add(handle, model);
-        mSensors->activate(handle, 0 /* enabled */);
+        checkReturn(mSensors->activate(handle, 0 /* enabled */));
     } else {
         mActivationCount.removeItem(handle);
     }
@@ -96,7 +118,7 @@
     if (mSensors == NULL) return "HAL not initialized\n";
 
     String8 result;
-    mSensors->getSensorsList([&](const auto &list) {
+    checkReturn(mSensors->getSensorsList([&](const auto &list) {
             const size_t count = list.size();
 
             result.appendFormat(
@@ -141,7 +163,7 @@
                         "}, selected = %.1f ms\n",
                         info.bestBatchParams.batchTimeout / 1e6f);
             }
-        });
+        }));
 
     return result.string();
 }
@@ -161,7 +183,7 @@
 
     ssize_t err;
 
-    mSensors->poll(
+    checkReturn(mSensors->poll(
             count,
             [&](auto result,
                 const auto &events,
@@ -172,7 +194,7 @@
                 } else {
                     err = StatusFromResult(result);
                 }
-            });
+            }));
 
     return err;
 }
@@ -237,10 +259,10 @@
                          "\t>>> actuating h/w batch %d %d %" PRId64 " %" PRId64, handle,
                          info.bestBatchParams.flags, info.bestBatchParams.batchDelay,
                          info.bestBatchParams.batchTimeout);
-                mSensors->batch(
+                checkReturn(mSensors->batch(
                         handle,
                         info.bestBatchParams.batchDelay,
-                        info.bestBatchParams.batchTimeout);
+                        info.bestBatchParams.batchTimeout));
             }
         } else {
             // sensor wasn't enabled for this ident
@@ -254,7 +276,7 @@
     if (actuateHardware) {
         ALOGD_IF(DEBUG_CONNECTIONS, "\t>>> actuating h/w activate handle=%d enabled=%d", handle,
                  enabled);
-        err = StatusFromResult(mSensors->activate(handle, enabled));
+        err = StatusFromResult(checkReturn(mSensors->activate(handle, enabled)));
         ALOGE_IF(err, "Error %s sensor %d (%s)", enabled ? "activating" : "disabling", handle,
                  strerror(-err));
 
@@ -311,10 +333,10 @@
                  info.bestBatchParams.flags, info.bestBatchParams.batchDelay,
                  info.bestBatchParams.batchTimeout);
         err = StatusFromResult(
-                mSensors->batch(
+                checkReturn(mSensors->batch(
                     handle,
                     info.bestBatchParams.batchDelay,
-                    info.bestBatchParams.batchTimeout));
+                    info.bestBatchParams.batchTimeout)));
         if (err != NO_ERROR) {
             ALOGE("sensor batch failed %p %d %d %" PRId64 " %" PRId64 " err=%s",
                   mSensors.get(), handle,
@@ -348,7 +370,7 @@
     info.selectBatchParams();
 
     return StatusFromResult(
-            mSensors->batch(handle, info.bestBatchParams.batchDelay, 0));
+            checkReturn(mSensors->batch(handle, info.bestBatchParams.batchDelay, 0)));
 }
 
 int SensorDevice::getHalDeviceVersion() const {
@@ -359,7 +381,7 @@
 status_t SensorDevice::flush(void* ident, int handle) {
     if (isClientDisabled(ident)) return INVALID_OPERATION;
     ALOGD_IF(DEBUG_CONNECTIONS, "\t>>> actuating h/w flush %d", handle);
-    return StatusFromResult(mSensors->flush(handle));
+    return StatusFromResult(checkReturn(mSensors->flush(handle)));
 }
 
 bool SensorDevice::isClientDisabled(void* ident) {
@@ -383,15 +405,15 @@
         ALOGD_IF(DEBUG_CONNECTIONS, "\t>> reenable actuating h/w sensor enable handle=%d ",
                    sensor_handle);
         status_t err = StatusFromResult(
-                mSensors->batch(
+                checkReturn(mSensors->batch(
                     sensor_handle,
                     info.bestBatchParams.batchDelay,
-                    info.bestBatchParams.batchTimeout));
+                    info.bestBatchParams.batchTimeout)));
         ALOGE_IF(err, "Error calling batch on sensor %d (%s)", sensor_handle, strerror(-err));
 
         if (err == NO_ERROR) {
             err = StatusFromResult(
-                    mSensors->activate(sensor_handle, 1 /* enabled */));
+                    checkReturn(mSensors->activate(sensor_handle, 1 /* enabled */)));
             ALOGE_IF(err, "Error activating sensor %d (%s)", sensor_handle, strerror(-err));
         }
     }
@@ -406,7 +428,7 @@
            const int sensor_handle = mActivationCount.keyAt(i);
            ALOGD_IF(DEBUG_CONNECTIONS, "\t>> actuating h/w sensor disable handle=%d ",
                    sensor_handle);
-           mSensors->activate(sensor_handle, 0 /* enabled */);
+           checkReturn(mSensors->activate(sensor_handle, 0 /* enabled */));
 
            // Add all the connections that were registered for this sensor to the disabled
            // clients list.
@@ -431,14 +453,14 @@
     Event ev;
     convertFromSensorEvent(*injected_sensor_event, &ev);
 
-    return StatusFromResult(mSensors->injectSensorData(ev));
+    return StatusFromResult(checkReturn(mSensors->injectSensorData(ev)));
 }
 
 status_t SensorDevice::setMode(uint32_t mode) {
 
      return StatusFromResult(
-             mSensors->setOperationMode(
-                 static_cast<hardware::sensors::V1_0::OperationMode>(mode)));
+             checkReturn(mSensors->setOperationMode(
+                 static_cast<hardware::sensors::V1_0::OperationMode>(mode))));
 }
 
 // ---------------------------------------------------------------------------
@@ -529,20 +551,20 @@
     };
 
     int32_t ret;
-    mSensors->registerDirectChannel(mem,
+    checkReturn(mSensors->registerDirectChannel(mem,
             [&ret](auto result, auto channelHandle) {
                 if (result == Result::OK) {
                     ret = channelHandle;
                 } else {
                     ret = StatusFromResult(result);
                 }
-            });
+            }));
     return ret;
 }
 
 void SensorDevice::unregisterDirectChannel(int32_t channelHandle) {
     Mutex::Autolock _l(mLock);
-    mSensors->unregisterDirectChannel(channelHandle);
+    checkReturn(mSensors->unregisterDirectChannel(channelHandle));
 }
 
 int32_t SensorDevice::configureDirectChannel(int32_t sensorHandle,
@@ -568,7 +590,7 @@
     }
 
     int32_t ret;
-    mSensors->configDirectReport(sensorHandle, channelHandle, rate,
+    checkReturn(mSensors->configDirectReport(sensorHandle, channelHandle, rate,
             [&ret, rate] (auto result, auto token) {
                 if (rate == RateLevel::STOP) {
                     ret = StatusFromResult(result);
@@ -579,7 +601,7 @@
                         ret = StatusFromResult(result);
                     }
                 }
-            });
+            }));
 
     return ret;
 }
@@ -635,5 +657,10 @@
     }
 }
 
+void SensorDevice::handleHidlDeath(const std::string & detail) {
+    // restart is the only option at present.
+    LOG_ALWAYS_FATAL("Abort due to ISensors hidl service failure, detail: %s.", detail.c_str());
+}
+
 // ---------------------------------------------------------------------------
 }; // namespace android
diff --git a/services/sensorservice/SensorDevice.h b/services/sensorservice/SensorDevice.h
index 7f95429..55a745f 100644
--- a/services/sensorservice/SensorDevice.h
+++ b/services/sensorservice/SensorDevice.h
@@ -37,6 +37,7 @@
 
 // ---------------------------------------------------------------------------
 using SensorServiceUtil::Dumpable;
+using hardware::Return;
 
 class SensorDevice : public Singleton<SensorDevice>, public Dumpable {
 public:
@@ -128,6 +129,15 @@
     SortedVector<void *> mDisabledClients;
     SensorDevice();
 
+    static void handleHidlDeath(const std::string &detail);
+    template<typename T>
+    static Return<T> checkReturn(Return<T> &&ret) {
+        if (!ret.isOk()) {
+            handleHidlDeath(ret.description());
+        }
+        return std::move(ret);
+    }
+
     bool isClientDisabled(void* ident);
     bool isClientDisabledLocked(void* ident);
 
diff --git a/services/surfaceflinger/Android.mk b/services/surfaceflinger/Android.mk
index 24c68ec..afaccd2 100644
--- a/services/surfaceflinger/Android.mk
+++ b/services/surfaceflinger/Android.mk
@@ -131,9 +131,11 @@
 
 LOCAL_CFLAGS += -fvisibility=hidden -Werror=format
 
+LOCAL_HEADER_LIBRARIES := \
+    android.hardware.configstore-utils
+
 LOCAL_STATIC_LIBRARIES := \
     libhwcomposer-command-buffer \
-    android.hardware.configstore-utils \
     libtrace_proto \
     libvkjson \
     libvr_manager \
diff --git a/services/surfaceflinger/Client.cpp b/services/surfaceflinger/Client.cpp
index 2b4f4cb..9ddae2b 100644
--- a/services/surfaceflinger/Client.cpp
+++ b/services/surfaceflinger/Client.cpp
@@ -49,7 +49,10 @@
 {
     const size_t count = mLayers.size();
     for (size_t i=0 ; i<count ; i++) {
-        mFlinger->removeLayer(mLayers.valueAt(i));
+        sp<Layer> l = mLayers.valueAt(i).promote();
+        if (l != nullptr) {
+            mFlinger->removeLayer(l);
+        }
     }
 }
 
diff --git a/services/surfaceflinger/DisplayDevice.h b/services/surfaceflinger/DisplayDevice.h
index 92ede08..caa7adc 100644
--- a/services/surfaceflinger/DisplayDevice.h
+++ b/services/surfaceflinger/DisplayDevice.h
@@ -242,7 +242,11 @@
     static status_t orientationToTransfrom(int orientation,
             int w, int h, Transform* tr);
 
+    // The identifier of the active layer stack for this display. Several displays
+    // can use the same layer stack: A z-ordered group of layers (sometimes called
+    // "surfaces"). Any given layer can only be on a single layer stack.
     uint32_t mLayerStack;
+
     int mOrientation;
     static uint32_t sPrimaryDisplayOrientation;
     // user-provided visible area of the layer stack
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
index 3e9ef24..c6e6dcb 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
@@ -131,7 +131,7 @@
     if (mIsUsingVrComposer) {
         mComposer = IComposer::getService("vr_hwcomposer");
     } else {
-        mComposer = IComposer::getService("hwcomposer");
+        mComposer = IComposer::getService(); // use default name
     }
 
     if (mComposer == nullptr) {
diff --git a/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.cpp b/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.cpp
index d72139e..4187890 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.cpp
@@ -961,8 +961,6 @@
         uint32_t* outNumRequests) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
-    ALOGV("[%" PRIu64 "] Entering validate", mId);
-
     if (!mChanges) {
         if (!mDevice.prepareAllDisplays()) {
             return Error::BadDisplay;
@@ -1189,8 +1187,6 @@
         return false;
     }
 
-    ALOGV("[%" PRIu64 "] Entering prepare", mId);
-
     allocateRequestedContents();
     assignHwc1LayerIds();
 
@@ -2207,7 +2203,6 @@
 // Adapter helpers
 
 void HWC2On1Adapter::populateCapabilities() {
-    ALOGV("populateCapabilities");
     if (mHwc1MinorVersion >= 3U) {
         int supportedTypes = 0;
         auto result = mHwc1Device->query(mHwc1Device,
@@ -2265,8 +2260,6 @@
 }
 
 void HWC2On1Adapter::populatePrimary() {
-    ALOGV("populatePrimary");
-
     std::unique_lock<std::recursive_timed_mutex> lock(mStateMutex);
 
     auto display = std::make_shared<Display>(*this, HWC2::DisplayType::Physical);
@@ -2367,6 +2360,83 @@
     return true;
 }
 
+void dumpHWC1Message(hwc_composer_device_1* device, size_t numDisplays,
+                     hwc_display_contents_1_t** displays) {
+    ALOGV("*****************************");
+    size_t displayId = 0;
+    while (displayId < numDisplays) {
+        hwc_display_contents_1_t* display = displays[displayId];
+
+        ALOGV("hwc_display_contents_1_t[%zu] @0x%p", displayId, display);
+        if (display == nullptr) {
+            displayId++;
+            continue;
+        }
+        ALOGV("  retirefd:0x%08x", display->retireFenceFd);
+        ALOGV("  outbuf  :0x%p", display->outbuf);
+        ALOGV("  outbuffd:0x%08x", display->outbufAcquireFenceFd);
+        ALOGV("  flags   :0x%08x", display->flags);
+        for(size_t layerId=0 ; layerId < display->numHwLayers ; layerId++) {
+            hwc_layer_1_t& layer = display->hwLayers[layerId];
+            ALOGV("    Layer[%zu]:", layerId);
+            ALOGV("      composition        : 0x%08x", layer.compositionType);
+            ALOGV("      hints              : 0x%08x", layer.hints);
+            ALOGV("      flags              : 0x%08x", layer.flags);
+            ALOGV("      handle             : 0x%p", layer.handle);
+            ALOGV("      transform          : 0x%08x", layer.transform);
+            ALOGV("      blending           : 0x%08x", layer.blending);
+            ALOGV("      sourceCropf        : %f, %f, %f, %f",
+                  layer.sourceCropf.left,
+                  layer.sourceCropf.top,
+                  layer.sourceCropf.right,
+                  layer.sourceCropf.bottom);
+            ALOGV("      displayFrame       : %d, %d, %d, %d",
+                  layer.displayFrame.left,
+                  layer.displayFrame.left,
+                  layer.displayFrame.left,
+                  layer.displayFrame.left);
+            hwc_region_t& visReg = layer.visibleRegionScreen;
+            ALOGV("      visibleRegionScreen: #0x%08zx[@0x%p]",
+                  visReg.numRects,
+                  visReg.rects);
+            for (size_t visRegId=0; visRegId < visReg.numRects ; visRegId++) {
+                if (layer.visibleRegionScreen.rects == nullptr) {
+                    ALOGV("        null");
+                } else {
+                    ALOGV("        visibleRegionScreen[%zu] %d, %d, %d, %d",
+                          visRegId,
+                          visReg.rects[visRegId].left,
+                          visReg.rects[visRegId].top,
+                          visReg.rects[visRegId].right,
+                          visReg.rects[visRegId].bottom);
+                }
+            }
+            ALOGV("      acquireFenceFd     : 0x%08x", layer.acquireFenceFd);
+            ALOGV("      releaseFenceFd     : 0x%08x", layer.releaseFenceFd);
+            ALOGV("      planeAlpha         : 0x%08x", layer.planeAlpha);
+            if (getMinorVersion(device) < 5)
+               continue;
+            ALOGV("      surfaceDamage      : #0x%08zx[@0x%p]",
+                  layer.surfaceDamage.numRects,
+                  layer.surfaceDamage.rects);
+            for (size_t sdId=0; sdId < layer.surfaceDamage.numRects ; sdId++) {
+                if (layer.surfaceDamage.rects == nullptr) {
+                    ALOGV("      null");
+                } else {
+                    ALOGV("      surfaceDamage[%zu] %d, %d, %d, %d",
+                          sdId,
+                          layer.surfaceDamage.rects[sdId].left,
+                          layer.surfaceDamage.rects[sdId].top,
+                          layer.surfaceDamage.rects[sdId].right,
+                          layer.surfaceDamage.rects[sdId].bottom);
+                }
+            }
+        }
+        displayId++;
+    }
+    ALOGV("-----------------------------");
+}
+
 Error HWC2On1Adapter::setAllDisplays() {
     ATRACE_CALL();
 
@@ -2391,6 +2461,7 @@
     ALOGV("Calling HWC1 set");
     {
         ATRACE_NAME("HWC1 set");
+        //dumpHWC1Message(mHwc1Device, mHwc1Contents.size(), mHwc1Contents.data());
         mHwc1Device->set(mHwc1Device, mHwc1Contents.size(),
                 mHwc1Contents.data());
     }
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 4a281d4..f03491f 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -69,7 +69,8 @@
       mCBContext(),
       mEventHandler(nullptr),
       mVSyncCounts(),
-      mRemainingHwcVirtualDisplays(0)
+      mRemainingHwcVirtualDisplays(0),
+      mDumpMayLockUp(false)
 {
     for (size_t i=0 ; i<HWC_NUM_PHYSICAL_DISPLAY_TYPES ; i++) {
         mLastHwVSync[i] = 0;
@@ -489,6 +490,8 @@
         return NO_ERROR;
     }
 
+    mDumpMayLockUp = true;
+
     uint32_t numTypes = 0;
     uint32_t numRequests = 0;
     auto error = hwcDisplay->validate(&numTypes, &numRequests);
@@ -633,6 +636,9 @@
     auto& displayData = mDisplayData[displayId];
     auto& hwcDisplay = displayData.hwcDisplay;
     auto error = hwcDisplay->present(&displayData.lastPresentFence);
+
+    mDumpMayLockUp = false;
+
     if (error != HWC2::Error::None) {
         ALOGE("presentAndGetReleaseFences: failed for display %d: %s (%d)",
               displayId, to_string(error).c_str(), static_cast<int32_t>(error));
@@ -878,6 +884,11 @@
 }
 
 void HWComposer::dump(String8& result) const {
+    if (mDumpMayLockUp) {
+        result.append("HWComposer dump skipped because present in progress");
+        return;
+    }
+
     // TODO: In order to provide a dump equivalent to HWC1, we need to shadow
     // all the state going into the layers. This is probably better done in
     // Layer itself, but it's going to take a bit of work to get there.
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index 0713709..20cca39 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -231,6 +231,9 @@
 
     // thread-safe
     mutable Mutex mVsyncLock;
+
+    // XXX temporary workaround for b/35806047
+    mutable std::atomic<bool> mDumpMayLockUp;
 };
 
 class HWComposerBufferCache {
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 2f83c0e..c3f8665 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -604,14 +604,15 @@
     // this gives us only the "orientation" component of the transform
     const State& s(getDrawingState());
 #ifdef USE_HWC2
+    auto blendMode = HWC2::BlendMode::None;
     if (!isOpaque(s) || s.alpha != 1.0f) {
-        auto blendMode = mPremultipliedAlpha ?
+        blendMode = mPremultipliedAlpha ?
                 HWC2::BlendMode::Premultiplied : HWC2::BlendMode::Coverage;
-        auto error = hwcLayer->setBlendMode(blendMode);
-        ALOGE_IF(error != HWC2::Error::None, "[%s] Failed to set blend mode %s:"
-                " %s (%d)", mName.string(), to_string(blendMode).c_str(),
-                to_string(error).c_str(), static_cast<int32_t>(error));
     }
+    auto error = hwcLayer->setBlendMode(blendMode);
+    ALOGE_IF(error != HWC2::Error::None, "[%s] Failed to set blend mode %s:"
+             " %s (%d)", mName.string(), to_string(blendMode).c_str(),
+             to_string(error).c_str(), static_cast<int32_t>(error));
 #else
     if (!isOpaque(s) || s.alpha != 0xFF) {
         layer.setBlending(mPremultipliedAlpha ?
@@ -666,7 +667,7 @@
     }
     const Transform& tr(displayDevice->getTransform());
     Rect transformedFrame = tr.transform(frame);
-    auto error = hwcLayer->setDisplayFrame(transformedFrame);
+    error = hwcLayer->setDisplayFrame(transformedFrame);
     if (error != HWC2::Error::None) {
         ALOGE("[%s] Failed to set display frame [%d, %d, %d, %d]: %s (%d)",
                 mName.string(), transformedFrame.left, transformedFrame.top,
@@ -1436,29 +1437,23 @@
 
     // If this transaction is waiting on the receipt of a frame, generate a sync
     // point and send it to the remote layer.
-    if (mCurrentState.handle != nullptr) {
-        sp<IBinder> strongBinder = mCurrentState.handle.promote();
-        sp<Handle> handle = nullptr;
-        sp<Layer> handleLayer = nullptr;
-        if (strongBinder != nullptr) {
-            handle = static_cast<Handle*>(strongBinder.get());
-            handleLayer = handle->owner.promote();
-        }
-        if (strongBinder == nullptr || handleLayer == nullptr) {
-            ALOGE("[%s] Unable to promote Layer handle", mName.string());
+    if (mCurrentState.barrierLayer != nullptr) {
+        sp<Layer> barrierLayer = mCurrentState.barrierLayer.promote();
+        if (barrierLayer == nullptr) {
+            ALOGE("[%s] Unable to promote barrier Layer.", mName.string());
             // If we can't promote the layer we are intended to wait on,
             // then it is expired or otherwise invalid. Allow this transaction
             // to be applied as per normal (no synchronization).
-            mCurrentState.handle = nullptr;
+            mCurrentState.barrierLayer = nullptr;
         } else {
             auto syncPoint = std::make_shared<SyncPoint>(
                     mCurrentState.frameNumber);
-            if (handleLayer->addSyncPoint(syncPoint)) {
+            if (barrierLayer->addSyncPoint(syncPoint)) {
                 mRemoteSyncPoints.push_back(std::move(syncPoint));
             } else {
                 // We already missed the frame we're supposed to synchronize
                 // on, so go ahead and apply the state update
-                mCurrentState.handle = nullptr;
+                mCurrentState.barrierLayer = nullptr;
             }
         }
 
@@ -1481,7 +1476,7 @@
 bool Layer::applyPendingStates(State* stateToCommit) {
     bool stateUpdateAvailable = false;
     while (!mPendingStates.empty()) {
-        if (mPendingStates[0].handle != nullptr) {
+        if (mPendingStates[0].barrierLayer != nullptr) {
             if (mRemoteSyncPoints.empty()) {
                 // If we don't have a sync point for this, apply it anyway. It
                 // will be visually wrong, but it should keep us from getting
@@ -1733,7 +1728,7 @@
 bool Layer::setMatrix(const layer_state_t::matrix22_t& matrix) {
     mCurrentState.sequence++;
     mCurrentState.requested.transform.set(
-            matrix.dsdx, matrix.dsdy, matrix.dtdx, matrix.dtdy);
+            matrix.dsdx, matrix.dtdy, matrix.dtdx, matrix.dsdy);
     mCurrentState.modified = true;
     setTransactionFlags(eTransactionNeeded);
     return true;
@@ -1828,17 +1823,24 @@
     return p->getLayerStack();
 }
 
-void Layer::deferTransactionUntil(const sp<IBinder>& handle,
+void Layer::deferTransactionUntil(const sp<Layer>& barrierLayer,
         uint64_t frameNumber) {
-    mCurrentState.handle = handle;
+    mCurrentState.barrierLayer = barrierLayer;
     mCurrentState.frameNumber = frameNumber;
     // We don't set eTransactionNeeded, because just receiving a deferral
     // request without any other state updates shouldn't actually induce a delay
     mCurrentState.modified = true;
     pushPendingState();
-    mCurrentState.handle = nullptr;
+    mCurrentState.barrierLayer = nullptr;
     mCurrentState.frameNumber = 0;
     mCurrentState.modified = false;
+    ALOGE("Deferred transaction");
+}
+
+void Layer::deferTransactionUntil(const sp<IBinder>& barrierHandle,
+        uint64_t frameNumber) {
+    sp<Handle> handle = static_cast<Handle*>(barrierHandle.get());
+    deferTransactionUntil(handle->owner.promote(), frameNumber);
 }
 
 void Layer::useSurfaceDamage() {
@@ -2454,6 +2456,21 @@
     return true;
 }
 
+bool Layer::detachChildren() {
+    traverseInZOrder([this](Layer* child) {
+        if (child == this) {
+            return;
+        }
+
+        sp<Client> client(child->mClientRef.promote());
+        if (client != nullptr) {
+            client->detachLayer(child);
+        }
+    });
+
+    return true;
+}
+
 void Layer::setParent(const sp<Layer>& layer) {
     mParent = layer;
 }
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index c5fea73..e2b2a3a 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -109,7 +109,14 @@
         Geometry active;
         Geometry requested;
         int32_t z;
+
+        // The identifier of the layer stack this layer belongs to. A layer can
+        // only be associated to a single layer stack. A layer stack is a
+        // z-ordered group of layers which can be associated to one or more
+        // displays. Using the same layer stack on different displays is a way
+        // to achieve mirroring.
         uint32_t layerStack;
+
 #ifdef USE_HWC2
         float alpha;
 #else
@@ -128,9 +135,9 @@
         // finalCrop is expressed in display space coordinate.
         Rect finalCrop;
 
-        // If set, defers this state update until the Layer identified by handle
+        // If set, defers this state update until the identified Layer
         // receives a frame with the given frameNumber
-        wp<IBinder> handle;
+        wp<Layer> barrierLayer;
         uint64_t frameNumber;
 
         // the transparentRegion hint is a bit special, it's latched only
@@ -171,10 +178,12 @@
     bool setLayerStack(uint32_t layerStack);
     bool setDataSpace(android_dataspace dataSpace);
     uint32_t getLayerStack() const;
-    void deferTransactionUntil(const sp<IBinder>& handle, uint64_t frameNumber);
+    void deferTransactionUntil(const sp<IBinder>& barrierHandle, uint64_t frameNumber);
+    void deferTransactionUntil(const sp<Layer>& barrierLayer, uint64_t frameNumber);
     bool setOverrideScalingMode(int32_t overrideScalingMode);
     void setInfo(uint32_t type, uint32_t appId);
     bool reparentChildren(const sp<IBinder>& layer);
+    bool detachChildren();
 
     // If we have received a new buffer this frame, we will pass its surface
     // damage down to hardware composer. Otherwise, we must send a region with
@@ -695,6 +704,11 @@
         Rect displayFrame;
         FloatRect sourceCrop;
     };
+
+    // A layer can be attached to multiple displays when operating in mirror mode
+    // (a.k.a: when several displays are attached with equal layerStack). In this
+    // case we need to keep track. In non-mirror mode, a layer will have only one.
+    // HWCInfo. This map key is a display layerStack.
     std::unordered_map<int32_t, HWCInfo> mHwcLayers;
 
     // We need one HWComposerBufferCache for each HWC display.  We cannot have
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 2781e8c..daeac27 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -33,7 +33,6 @@
 
 #include <binder/IPCThreadState.h>
 #include <binder/IServiceManager.h>
-#include <binder/MemoryHeapBase.h>
 #include <binder/PermissionCache.h>
 
 #include <dvr/vr_flinger.h>
@@ -157,6 +156,7 @@
         mVisibleRegionsDirty(false),
         mGeometryInvalid(false),
         mAnimCompositionPending(false),
+        mVrModeSupported(0),
         mDebugRegion(0),
         mDebugDDMS(0),
         mDebugDisableHWC(0),
@@ -167,7 +167,7 @@
         mLastTransactionTime(0),
         mBootFinished(false),
         mForceFullDamage(false),
-        mInterceptor(),
+        mInterceptor(this),
         mPrimaryDispSync("PrimaryDispSync"),
         mPrimaryHWVsyncEnabled(false),
         mHWVsyncAvailable(false),
@@ -176,14 +176,20 @@
         mFrameBuckets(),
         mTotalTime(0),
         mLastSwapTime(0),
-        mNumLayers(0),
-        mEnterVrMode(false)
+        mNumLayers(0)
+#ifdef USE_HWC2
+        ,mEnterVrMode(false)
+#endif
 {
     ALOGI("SurfaceFlinger is starting");
 
     // debugging stuff...
     char value[PROPERTY_VALUE_MAX];
 
+    // TODO (urbanus): remove once b/35319396 is fixed.
+    property_get("ro.boot.vr", value, "0");
+    mVrModeSupported = atoi(value);
+
     property_get("ro.bq.gpu_to_cpu_unsupported", value, "0");
     mGpuToCpuSupported = !atoi(value);
 
@@ -627,6 +633,11 @@
 bool SurfaceFlinger::authenticateSurfaceTexture(
         const sp<IGraphicBufferProducer>& bufferProducer) const {
     Mutex::Autolock _l(mStateLock);
+    return authenticateSurfaceTextureLocked(bufferProducer);
+}
+
+bool SurfaceFlinger::authenticateSurfaceTextureLocked(
+        const sp<IGraphicBufferProducer>& bufferProducer) const {
     sp<IBinder> surfaceTextureBinder(IInterface::asBinder(bufferProducer));
     return mGraphicBufferProducerList.indexOf(surfaceTextureBinder) >= 0;
 }
@@ -1204,12 +1215,17 @@
 }
 
 void SurfaceFlinger::updateVrMode() {
+    bool enteringVrMode = mEnterVrMode;
+    if (enteringVrMode == mHwc->isUsingVrComposer()) {
+        return;
+    }
+    if (enteringVrMode && !mVrHwc) {
+        // Construct new HWComposer without holding any locks.
+        mVrHwc = new HWComposer(true);
+        ALOGV("Vr HWC created");
+    }
     {
         Mutex::Autolock _l(mStateLock);
-        bool enteringVrMode = mEnterVrMode;
-        if (enteringVrMode == mHwc->isUsingVrComposer()) {
-            return;
-        }
 
         if (enteringVrMode) {
             // Start vrflinger thread, if it hasn't been started already.
@@ -1224,11 +1240,6 @@
                 }
             }
 
-            if (!mVrHwc) {
-                mVrHwc = new HWComposer(true);
-                ALOGV("Vr HWC created");
-            }
-
             resetHwc();
 
             mHwc = mVrHwc;
@@ -1256,8 +1267,11 @@
     ATRACE_CALL();
     switch (what) {
         case MessageQueue::INVALIDATE: {
-            // TODO(eieio): Disabled until SELinux issues are resolved.
-            //updateVrMode();
+            // TODO(eieio): Tied to a conditional until SELinux issues
+            // are resolved.
+            if (mVrModeSupported) {
+                updateVrMode();
+            }
 
             bool frameMissed = !mHadClientComposition &&
                     mPreviousPresentFence != Fence::NO_FENCE &&
@@ -1265,6 +1279,7 @@
                             Fence::SIGNAL_TIME_PENDING);
             ATRACE_INT("FrameMissed", static_cast<int>(frameMissed));
             if (mPropagateBackpressure && frameMissed) {
+                ALOGD("Backpressure trigger, skipping transaction & refresh!");
                 signalLayerUpdate();
                 break;
             }
@@ -1579,6 +1594,9 @@
                             layer->setHwcLayer(displayDevice->getHwcDisplayId(),
                                     nullptr);
                         }
+                    } else {
+                        layer->setHwcLayer(displayDevice->getHwcDisplayId(),
+                                nullptr);
                     }
                 });
             }
@@ -1633,7 +1651,6 @@
             if (hwcId >= 0) {
                 const Vector<sp<Layer>>& currentLayers(
                         displayDevice->getVisibleLayersSortedByZ());
-                bool foundLayerWithoutHwc = false;
                 for (size_t i = 0; i < currentLayers.size(); i++) {
                     const auto& layer = currentLayers[i];
                     if (!layer->hasHwcLayer(hwcId)) {
@@ -1642,7 +1659,6 @@
                             layer->setHwcLayer(hwcId, std::move(hwcLayer));
                         } else {
                             layer->forceClientComposition(hwcId);
-                            foundLayerWithoutHwc = true;
                             continue;
                         }
                     }
@@ -2527,14 +2543,7 @@
     return NO_ERROR;
 }
 
-status_t SurfaceFlinger::removeLayer(const wp<Layer>& weakLayer) {
-    Mutex::Autolock _l(mStateLock);
-    sp<Layer> layer = weakLayer.promote();
-    if (layer == nullptr) {
-        // The layer has already been removed, carry on
-        return NO_ERROR;
-    }
-
+status_t SurfaceFlinger::removeLayer(const sp<Layer>& layer) {
     const auto& p = layer->getParent();
     const ssize_t index = (p != nullptr) ? p->removeChild(layer) :
         mCurrentState.layersSortedByZ.remove(layer);
@@ -2796,7 +2805,19 @@
             }
         }
         if (what & layer_state_t::eDeferTransaction) {
-            layer->deferTransactionUntil(s.handle, s.frameNumber);
+            if (s.barrierHandle != nullptr) {
+                layer->deferTransactionUntil(s.barrierHandle, s.frameNumber);
+            } else if (s.barrierGbp != nullptr) {
+                const sp<IGraphicBufferProducer>& gbp = s.barrierGbp;
+                if (authenticateSurfaceTextureLocked(gbp)) {
+                    const auto& otherLayer =
+                        (static_cast<MonitoredProducer*>(gbp.get()))->getLayer();
+                    layer->deferTransactionUntil(otherLayer, s.frameNumber);
+                } else {
+                    ALOGE("Attempt to defer transaction to to an"
+                            " unrecognized GraphicBufferProducer");
+                }
+            }
             // We don't trigger a traversal here because if no other state is
             // changed, we don't want this to cause any more work
         }
@@ -2805,6 +2826,9 @@
                 flags |= eTransactionNeeded|eTraversalNeeded;
             }
         }
+        if (what & layer_state_t::eDetachChildren) {
+            layer->detachChildren();
+        }
         if (what & layer_state_t::eOverrideScalingModeChanged) {
             layer->setOverrideScalingMode(s.overrideScalingMode);
             // We don't trigger a traversal here because if no other state is
@@ -2901,7 +2925,7 @@
 
 status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle)
 {
-    // called by the window manager when it wants to remove a Layer
+    // called by a client when it wants to remove a Layer
     status_t err = NO_ERROR;
     sp<Layer> l(client->getLayerUser(handle));
     if (l != NULL) {
@@ -2917,7 +2941,15 @@
 {
     // called by ~LayerCleaner() when all references to the IBinder (handle)
     // are gone
-    return removeLayer(layer);
+    sp<Layer> l = layer.promote();
+    if (l == nullptr) {
+        // The layer has already been removed, carry on
+        return NO_ERROR;
+    } if (l->getParent() != nullptr) {
+        // If we have a parent, then we can continue to live as long as it does.
+        return NO_ERROR;
+    }
+    return removeLayer(l);
 }
 
 // ---------------------------------------------------------------------------
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index c43786a..d63c0bb 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -36,8 +36,6 @@
 #include <utils/SortedVector.h>
 #include <utils/threads.h>
 
-#include <binder/IMemory.h>
-
 #include <ui/FenceTime.h>
 #include <ui/PixelFormat.h>
 #include <math/mat4.h>
@@ -160,6 +158,9 @@
         return *mRenderEngine;
     }
 
+    bool authenticateSurfaceTextureLocked(
+        const sp<IGraphicBufferProducer>& bufferProducer) const;
+
 private:
     friend class Client;
     friend class DisplayEventConnection;
@@ -329,7 +330,7 @@
     status_t onLayerDestroyed(const wp<Layer>& layer);
 
     // remove a layer from SurfaceFlinger immediately
-    status_t removeLayer(const wp<Layer>& layer);
+    status_t removeLayer(const sp<Layer>& layer);
 
     // add a layer to SurfaceFlinger
     status_t addClientLayer(const sp<Client>& client,
@@ -556,6 +557,7 @@
     DefaultKeyedVector< wp<IBinder>, sp<DisplayDevice> > mDisplays;
 
     // don't use a lock for these, we don't care
+    int mVrModeSupported;
     int mDebugRegion;
     int mDebugDDMS;
     int mDebugDisableHWC;
diff --git a/services/surfaceflinger/SurfaceFlingerConsumer.cpp b/services/surfaceflinger/SurfaceFlingerConsumer.cpp
index 04f4f7e..2fcbdba 100644
--- a/services/surfaceflinger/SurfaceFlingerConsumer.cpp
+++ b/services/surfaceflinger/SurfaceFlingerConsumer.cpp
@@ -223,7 +223,7 @@
     status_t result = releaseBufferLocked(mPendingRelease.currentTexture,
             mPendingRelease.graphicBuffer, mPendingRelease.display,
             mPendingRelease.fence);
-    ALOGE_IF(result != NO_ERROR, "releasePendingBuffer failed: %s (%d)",
+    ALOGE_IF(result < NO_ERROR, "releasePendingBuffer failed: %s (%d)",
             strerror(-result), result);
     mPendingRelease = PendingRelease();
     return true;
diff --git a/services/surfaceflinger/SurfaceFlinger_hwc1.cpp b/services/surfaceflinger/SurfaceFlinger_hwc1.cpp
index 5aaaab1..fe8dd0c 100644
--- a/services/surfaceflinger/SurfaceFlinger_hwc1.cpp
+++ b/services/surfaceflinger/SurfaceFlinger_hwc1.cpp
@@ -33,7 +33,6 @@
 
 #include <binder/IPCThreadState.h>
 #include <binder/IServiceManager.h>
-#include <binder/MemoryHeapBase.h>
 #include <binder/PermissionCache.h>
 
 #include <ui/DisplayInfo.h>
@@ -155,7 +154,7 @@
         mLastTransactionTime(0),
         mBootFinished(false),
         mForceFullDamage(false),
-        mInterceptor(),
+        mInterceptor(this),
         mPrimaryDispSync("PrimaryDispSync"),
         mPrimaryHWVsyncEnabled(false),
         mHWVsyncAvailable(false),
@@ -628,6 +627,11 @@
 bool SurfaceFlinger::authenticateSurfaceTexture(
         const sp<IGraphicBufferProducer>& bufferProducer) const {
     Mutex::Autolock _l(mStateLock);
+    return authenticateSurfaceTextureLocked(bufferProducer);
+}
+
+bool SurfaceFlinger::authenticateSurfaceTextureLocked(
+        const sp<IGraphicBufferProducer>& bufferProducer) const {
     sp<IBinder> surfaceTextureBinder(IInterface::asBinder(bufferProducer));
     return mGraphicBufferProducerList.indexOf(surfaceTextureBinder) >= 0;
 }
@@ -2313,14 +2317,7 @@
     return NO_ERROR;
 }
 
-status_t SurfaceFlinger::removeLayer(const wp<Layer>& weakLayer) {
-    Mutex::Autolock _l(mStateLock);
-    sp<Layer> layer = weakLayer.promote();
-    if (layer == nullptr) {
-        // The layer has already been removed, carry on
-        return NO_ERROR;
-    }
-
+status_t SurfaceFlinger::removeLayer(const sp<Layer>& layer) {
     const auto& p = layer->getParent();
     const ssize_t index = (p != nullptr) ? p->removeChild(layer) :
              mCurrentState.layersSortedByZ.remove(layer);
@@ -2582,7 +2579,19 @@
             }
         }
         if (what & layer_state_t::eDeferTransaction) {
-            layer->deferTransactionUntil(s.handle, s.frameNumber);
+            if (s.barrierHandle != nullptr) {
+                layer->deferTransactionUntil(s.barrierHandle, s.frameNumber);
+            } else if (s.barrierGbp != nullptr) {
+                const sp<IGraphicBufferProducer>& gbp = s.barrierGbp;
+                if (authenticateSurfaceTextureLocked(gbp)) {
+                    const auto& otherLayer =
+                        (static_cast<MonitoredProducer*>(gbp.get()))->getLayer();
+                    layer->deferTransactionUntil(otherLayer, s.frameNumber);
+                } else {
+                    ALOGE("Attempt to defer transaction to to an"
+                            " unrecognized GraphicBufferProducer");
+                }
+            }
             // We don't trigger a traversal here because if no other state is
             // changed, we don't want this to cause any more work
         }
@@ -2591,6 +2600,9 @@
                 flags |= eTransactionNeeded|eTraversalNeeded;
             }
         }
+        if (what & layer_state_t::eDetachChildren) {
+            layer->detachChildren();
+        }
         if (what & layer_state_t::eOverrideScalingModeChanged) {
             layer->setOverrideScalingMode(s.overrideScalingMode);
             // We don't trigger a traversal here because if no other state is
@@ -2687,7 +2699,7 @@
 
 status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle)
 {
-    // called by the window manager when it wants to remove a Layer
+    // called by a client when it wants to remove a Layer
     status_t err = NO_ERROR;
     sp<Layer> l(client->getLayerUser(handle));
     if (l != NULL) {
@@ -2703,7 +2715,15 @@
 {
     // called by ~LayerCleaner() when all references to the IBinder (handle)
     // are gone
-    return removeLayer(layer);
+    sp<Layer> l = layer.promote();
+    if (l == nullptr) {
+        // The layer has already been removed, carry on
+        return NO_ERROR;
+    } if (l->getParent() != nullptr) {
+        // If we have a parent, then we can continue to live as long as it does.
+        return NO_ERROR;
+    }
+    return removeLayer(l);
 }
 
 // ---------------------------------------------------------------------------
diff --git a/services/surfaceflinger/SurfaceInterceptor.cpp b/services/surfaceflinger/SurfaceInterceptor.cpp
index 2d6472a..026fe80 100644
--- a/services/surfaceflinger/SurfaceInterceptor.cpp
+++ b/services/surfaceflinger/SurfaceInterceptor.cpp
@@ -31,6 +31,11 @@
 
 // ----------------------------------------------------------------------------
 
+SurfaceInterceptor::SurfaceInterceptor(SurfaceFlinger* flinger)
+    :   mFlinger(flinger)
+{
+}
+
 void SurfaceInterceptor::enable(const SortedVector<sp<Layer>>& layers,
         const DefaultKeyedVector< wp<IBinder>, DisplayDeviceState>& displays)
 {
@@ -97,8 +102,8 @@
     addTransparentRegionLocked(transaction, layerId, layer->mCurrentState.activeTransparentRegion);
     addLayerStackLocked(transaction, layerId, layer->mCurrentState.layerStack);
     addCropLocked(transaction, layerId, layer->mCurrentState.crop);
-    if (layer->mCurrentState.handle != nullptr) {
-        addDeferTransactionLocked(transaction, layerId, layer->mCurrentState.handle,
+    if (layer->mCurrentState.barrierLayer != nullptr) {
+        addDeferTransactionLocked(transaction, layerId, layer->mCurrentState.barrierLayer.promote(),
                 layer->mCurrentState.frameNumber);
     }
     addFinalCropLocked(transaction, layerId, layer->mCurrentState.finalCrop);
@@ -287,10 +292,9 @@
 }
 
 void SurfaceInterceptor::addDeferTransactionLocked(Transaction* transaction, int32_t layerId,
-        const wp<const IBinder>& weakHandle, uint64_t frameNumber)
+        const sp<const Layer>& layer, uint64_t frameNumber)
 {
     SurfaceChange* change(createSurfaceChangeLocked(transaction, layerId));
-    const sp<const Layer> layer(getLayer(weakHandle));
     if (layer == nullptr) {
         ALOGE("An existing layer could not be retrieved with the handle"
                 " for the deferred transaction");
@@ -349,7 +353,18 @@
         addCropLocked(transaction, layerId, state.crop);
     }
     if (state.what & layer_state_t::eDeferTransaction) {
-        addDeferTransactionLocked(transaction, layerId, state.handle, state.frameNumber);
+        sp<Layer> otherLayer = nullptr;
+        if (state.barrierHandle != nullptr) {
+            otherLayer = static_cast<Layer::Handle*>(state.barrierHandle.get())->owner.promote();
+        } else if (state.barrierGbp != nullptr) {
+            auto const& gbp = state.barrierGbp;
+            if (mFlinger->authenticateSurfaceTextureLocked(gbp)) {
+                otherLayer = (static_cast<MonitoredProducer*>(gbp.get()))->getLayer();
+            } else {
+                ALOGE("Attempt to defer transaction to to an unrecognized GraphicBufferProducer");
+            }
+        }
+        addDeferTransactionLocked(transaction, layerId, otherLayer, state.frameNumber);
     }
     if (state.what & layer_state_t::eFinalCropChanged) {
         addFinalCropLocked(transaction, layerId, state.finalCrop);
diff --git a/services/surfaceflinger/SurfaceInterceptor.h b/services/surfaceflinger/SurfaceInterceptor.h
index 9af6e61..30ebcc6 100644
--- a/services/surfaceflinger/SurfaceInterceptor.h
+++ b/services/surfaceflinger/SurfaceInterceptor.h
@@ -28,6 +28,7 @@
 
 class BufferItem;
 class Layer;
+class SurfaceFlinger;
 struct DisplayState;
 struct layer_state_t;
 
@@ -39,6 +40,7 @@
  */
 class SurfaceInterceptor {
 public:
+    SurfaceInterceptor(SurfaceFlinger* const flinger);
     // Both vectors are used to capture the current state of SF as the initial snapshot in the trace
     void enable(const SortedVector<sp<Layer>>& layers,
             const DefaultKeyedVector< wp<IBinder>, DisplayDeviceState>& displays);
@@ -102,7 +104,7 @@
     void addLayerStackLocked(Transaction* transaction, int32_t layerId, uint32_t layerStack);
     void addCropLocked(Transaction* transaction, int32_t layerId, const Rect& rect);
     void addDeferTransactionLocked(Transaction* transaction, int32_t layerId,
-            const wp<const IBinder>& weakHandle, uint64_t frameNumber);
+            const sp<const Layer>& layer, uint64_t frameNumber);
     void addFinalCropLocked(Transaction* transaction, int32_t layerId, const Rect& rect);
     void addOverrideScalingModeLocked(Transaction* transaction, int32_t layerId,
             int32_t overrideScalingMode);
@@ -129,6 +131,7 @@
     std::string mOutputFileName {DEFAULT_FILENAME};
     std::mutex mTraceMutex {};
     Trace mTrace {};
+    SurfaceFlinger* const mFlinger;
 };
 
 }
diff --git a/services/surfaceflinger/tests/Transaction_test.cpp b/services/surfaceflinger/tests/Transaction_test.cpp
index d9f1438..aeb557a 100644
--- a/services/surfaceflinger/tests/Transaction_test.cpp
+++ b/services/surfaceflinger/tests/Transaction_test.cpp
@@ -18,8 +18,6 @@
 
 #include <android/native_window.h>
 
-#include <binder/IMemory.h>
-
 #include <gui/ISurfaceComposer.h>
 #include <gui/Surface.h>
 #include <gui/SurfaceComposerClient.h>
@@ -199,9 +197,9 @@
     {
         SCOPED_TRACE("before move");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel(  0,  12,  63,  63, 195);
-        sc->checkPixel( 75,  75, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(0, 12);
+        sc->expectFGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 
     SurfaceComposerClient::openGlobalTransaction();
@@ -211,9 +209,9 @@
         // This should reflect the new position, but not the new color.
         SCOPED_TRACE("after move, before redraw");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75,  63,  63, 195);
-        sc->checkPixel(145, 145, 195,  63,  63);
+        sc->expectBGColor(24, 24);
+        sc->expectBGColor(75, 75);
+        sc->expectFGColor(145, 145);
     }
 
     fillSurfaceRGBA8(mFGSurfaceControl, 63, 195, 63);
@@ -222,9 +220,9 @@
         // This should reflect the new position and the new color.
         SCOPED_TRACE("after redraw");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75,  63,  63, 195);
-        sc->checkPixel(145, 145,  63, 195,  63);
+        sc->expectBGColor(24, 24);
+        sc->expectBGColor(75, 75);
+        sc->checkPixel(145, 145, 63, 195, 63);
     }
 }
 
@@ -233,9 +231,9 @@
     {
         SCOPED_TRACE("before resize");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel(  0,  12,  63,  63, 195);
-        sc->checkPixel( 75,  75, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(0, 12);
+        sc->expectFGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 
     ALOGD("resizing");
@@ -248,9 +246,9 @@
         // has not yet received a buffer of the correct size.
         SCOPED_TRACE("after resize, before redraw");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel(  0,  12,  63,  63, 195);
-        sc->checkPixel( 75,  75, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(0, 12);
+        sc->expectFGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 
     ALOGD("drawing");
@@ -261,9 +259,9 @@
         // This should reflect the new size and the new color.
         SCOPED_TRACE("after redraw");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75,  63, 195,  63);
-        sc->checkPixel(145, 145,  63, 195,  63);
+        sc->expectBGColor(24, 24);
+        sc->checkPixel(75, 75, 63, 195, 63);
+        sc->checkPixel(145, 145, 63, 195, 63);
     }
 }
 
@@ -272,9 +270,9 @@
     {
         SCOPED_TRACE("before crop");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectFGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 
     SurfaceComposerClient::openGlobalTransaction();
@@ -285,11 +283,11 @@
         // This should crop the foreground surface.
         SCOPED_TRACE("after crop");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75,  63,  63, 195);
-        sc->checkPixel( 95,  80, 195,  63,  63);
-        sc->checkPixel( 80,  95, 195,  63,  63);
-        sc->checkPixel( 96,  96,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectBGColor(75, 75);
+        sc->expectFGColor(95, 80);
+        sc->expectFGColor(80, 95);
+        sc->expectBGColor(96, 96);
     }
 }
 
@@ -298,9 +296,9 @@
     {
         SCOPED_TRACE("before crop");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectFGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
     SurfaceComposerClient::openGlobalTransaction();
     Rect cropRect(16, 16, 32, 32);
@@ -310,11 +308,11 @@
         // This should crop the foreground surface.
         SCOPED_TRACE("after crop");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75,  63,  63, 195);
-        sc->checkPixel( 95,  80,  63,  63, 195);
-        sc->checkPixel( 80,  95,  63,  63, 195);
-        sc->checkPixel( 96,  96,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectBGColor(75, 75);
+        sc->expectBGColor(95, 80);
+        sc->expectBGColor(80, 95);
+        sc->expectBGColor(96, 96);
     }
 }
 
@@ -323,9 +321,9 @@
     {
         SCOPED_TRACE("before setLayer");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectFGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 
     SurfaceComposerClient::openGlobalTransaction();
@@ -335,9 +333,9 @@
         // This should hide the foreground surface beneath the background.
         SCOPED_TRACE("after setLayer");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75,  63,  63, 195);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectBGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 }
 
@@ -346,9 +344,9 @@
     {
         SCOPED_TRACE("before hide");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectFGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 
     SurfaceComposerClient::openGlobalTransaction();
@@ -358,9 +356,9 @@
         // This should hide the foreground surface.
         SCOPED_TRACE("after hide, before show");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75,  63,  63, 195);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectBGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 
     SurfaceComposerClient::openGlobalTransaction();
@@ -370,9 +368,9 @@
         // This should show the foreground surface.
         SCOPED_TRACE("after show");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectFGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 }
 
@@ -381,9 +379,9 @@
     {
         SCOPED_TRACE("before setAlpha");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectFGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 
     SurfaceComposerClient::openGlobalTransaction();
@@ -393,9 +391,9 @@
         // This should set foreground to be 75% opaque.
         SCOPED_TRACE("after setAlpha");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75, 162,  63,  96);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->checkPixel(75, 75, 162, 63, 96);
+        sc->expectBGColor(145, 145);
     }
 }
 
@@ -404,9 +402,9 @@
     {
         SCOPED_TRACE("before setLayerStack");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectFGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 
     SurfaceComposerClient::openGlobalTransaction();
@@ -417,9 +415,9 @@
         // layer stack.
         SCOPED_TRACE("after setLayerStack");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75,  63,  63, 195);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectBGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 }
 
@@ -428,9 +426,9 @@
     {
         SCOPED_TRACE("before setFlags");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectFGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 
     SurfaceComposerClient::openGlobalTransaction();
@@ -441,9 +439,9 @@
         // This should hide the foreground surface
         SCOPED_TRACE("after setFlags");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 75,  75,  63,  63, 195);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectBGColor(75, 75);
+        sc->expectBGColor(145, 145);
     }
 }
 
@@ -452,10 +450,10 @@
     {
         SCOPED_TRACE("before setMatrix");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 91,  96, 195,  63,  63);
-        sc->checkPixel( 96, 101, 195,  63,  63);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectFGColor(91, 96);
+        sc->expectFGColor(96, 101);
+        sc->expectBGColor(145, 145);
     }
 
     SurfaceComposerClient::openGlobalTransaction();
@@ -465,10 +463,10 @@
     {
         SCOPED_TRACE("after setMatrix");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 24,  24,  63,  63, 195);
-        sc->checkPixel( 91,  96, 195,  63,  63);
-        sc->checkPixel( 96,  91,  63,  63, 195);
-        sc->checkPixel(145, 145,  63,  63, 195);
+        sc->expectBGColor(24, 24);
+        sc->expectFGColor(91, 96);
+        sc->expectBGColor(96, 91);
+        sc->expectBGColor(145, 145);
     }
 }
 
@@ -477,9 +475,9 @@
     {
         SCOPED_TRACE("before anything");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 32,  32,  63,  63, 195);
-        sc->checkPixel( 96,  96, 195,  63,  63);
-        sc->checkPixel(160, 160,  63,  63, 195);
+        sc->expectBGColor(32, 32);
+        sc->expectFGColor(96, 96);
+        sc->expectBGColor(160, 160);
     }
 
     // set up two deferred transactions on different frames
@@ -498,9 +496,9 @@
     {
         SCOPED_TRACE("before any trigger");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 32,  32,  63,  63, 195);
-        sc->checkPixel( 96,  96, 195,  63,  63);
-        sc->checkPixel(160, 160,  63,  63, 195);
+        sc->expectBGColor(32, 32);
+        sc->expectFGColor(96, 96);
+        sc->expectBGColor(160, 160);
     }
 
     // should trigger the first deferred transaction, but not the second one
@@ -508,9 +506,9 @@
     {
         SCOPED_TRACE("after first trigger");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 32,  32,  63,  63, 195);
-        sc->checkPixel( 96,  96, 162,  63,  96);
-        sc->checkPixel(160, 160,  63,  63, 195);
+        sc->expectBGColor(32, 32);
+        sc->checkPixel(96, 96, 162, 63, 96);
+        sc->expectBGColor(160, 160);
     }
 
     // should show up immediately since it's not deferred
@@ -523,9 +521,9 @@
     {
         SCOPED_TRACE("after second trigger");
         ScreenCapture::captureScreen(&sc);
-        sc->checkPixel( 32,  32,  63,  63, 195);
-        sc->checkPixel( 96,  96,  63,  63, 195);
-        sc->checkPixel(160, 160, 195,  63,  63);
+        sc->expectBGColor(32, 32);
+        sc->expectBGColor(96, 96);
+        sc->expectFGColor(160, 160);
     }
 }
 
@@ -630,4 +628,68 @@
         mCapture->expectFGColor(20, 20);
     }
 }
+
+TEST_F(ChildLayerTest, ReparentChildren) {
+    SurfaceComposerClient::openGlobalTransaction();
+    mChild->show();
+    mChild->setPosition(10, 10);
+    mFGSurfaceControl->setPosition(64, 64);
+    SurfaceComposerClient::closeGlobalTransaction(true);
+
+    {
+        ScreenCapture::captureScreen(&mCapture);
+        // Top left of foreground must now be visible
+        mCapture->expectFGColor(64, 64);
+        // But 10 pixels in we should see the child surface
+        mCapture->expectChildColor(74, 74);
+        // And 10 more pixels we should be back to the foreground surface
+        mCapture->expectFGColor(84, 84);
+    }
+    mFGSurfaceControl->reparentChildren(mBGSurfaceControl->getHandle());
+    {
+        ScreenCapture::captureScreen(&mCapture);
+        mCapture->expectFGColor(64, 64);
+        // In reparenting we should have exposed the entire foreground surface.
+        mCapture->expectFGColor(74, 74);
+        // And the child layer should now begin at 10, 10 (since the BG
+        // layer is at (0, 0)).
+        mCapture->expectBGColor(9, 9);
+        mCapture->expectChildColor(10, 10);
+    }
+}
+
+TEST_F(ChildLayerTest, DetachChildren) {
+    SurfaceComposerClient::openGlobalTransaction();
+    mChild->show();
+    mChild->setPosition(10, 10);
+    mFGSurfaceControl->setPosition(64, 64);
+    SurfaceComposerClient::closeGlobalTransaction(true);
+
+    {
+        ScreenCapture::captureScreen(&mCapture);
+        // Top left of foreground must now be visible
+        mCapture->expectFGColor(64, 64);
+        // But 10 pixels in we should see the child surface
+        mCapture->expectChildColor(74, 74);
+        // And 10 more pixels we should be back to the foreground surface
+        mCapture->expectFGColor(84, 84);
+    }
+
+    SurfaceComposerClient::openGlobalTransaction();
+    mFGSurfaceControl->detachChildren();
+    SurfaceComposerClient::closeGlobalTransaction();
+
+    SurfaceComposerClient::openGlobalTransaction();
+    mChild->hide();
+    SurfaceComposerClient::closeGlobalTransaction();
+
+    // Nothing should have changed.
+    {
+        ScreenCapture::captureScreen(&mCapture);
+        mCapture->expectFGColor(64, 64);
+        mCapture->expectChildColor(74, 74);
+        mCapture->expectFGColor(84, 84);
+    }
+}
+
 }
diff --git a/services/vr/sensord/pose_service.cpp b/services/vr/sensord/pose_service.cpp
index 40eb21d..32a2160 100644
--- a/services/vr/sensord/pose_service.cpp
+++ b/services/vr/sensord/pose_service.cpp
@@ -25,8 +25,6 @@
 #include <private/dvr/sensor_constants.h>
 #include <utils/Trace.h>
 
-#define arraysize(x) (static_cast<ssize_t>(std::extent<decltype(x)>::value))
-
 using android::pdx::LocalChannelHandle;
 using android::pdx::default_transport::Endpoint;
 using android::pdx::Status;
@@ -35,11 +33,8 @@
 namespace dvr {
 
 using Vector3d = vec3d;
-using Vector3f = vec3f;
 using Rotationd = quatd;
-using Rotationf = quatf;
 using AngleAxisd = Eigen::AngleAxis<double>;
-using AngleAxisf = Eigen::AngleAxis<float>;
 
 namespace {
 // Wait a few seconds before checking if we need to disable sensors.
@@ -69,7 +64,6 @@
 
 static constexpr int kDatasetIdLength = 36;
 static constexpr char kDatasetIdChars[] = "0123456789abcdef-";
-static constexpr char kDatasetLocation[] = "/data/sdcard/datasets/";
 
 // These are the flags used by BufferProducer::CreatePersistentUncachedBlob,
 // plus PRIVATE_ADSP_HEAP to allow access from the DSP.
@@ -77,14 +71,6 @@
     GRALLOC_USAGE_SW_READ_RARELY | GRALLOC_USAGE_SW_WRITE_RARELY |
     GRALLOC_USAGE_PRIVATE_UNCACHED | GRALLOC_USAGE_PRIVATE_ADSP_HEAP;
 
-// Extract yaw angle from a given quaternion rotation.
-// Y-axis is considered to be vertical. Result is in rad.
-template <typename T>
-T ExtractYaw(Eigen::Quaternion<T> rotation) {
-  const Eigen::Vector3<T> yaw_axis = rotation * vec3::UnitZ();
-  return std::atan2(yaw_axis.z(), yaw_axis.x());
-}
-
 std::string GetPoseModeString(DvrPoseMode mode) {
   switch (mode) {
     case DVR_POSE_MODE_6DOF:
@@ -110,19 +96,6 @@
   }
 }
 
-inline std::string GetVector3dString(const Vector3d& vector) {
-  std::ostringstream stream;
-  stream << "[" << vector[0] << "," << vector[1] << "," << vector[2] << "]";
-  return stream.str();
-}
-
-inline std::string GetRotationdString(const Rotationd& rotation) {
-  std::ostringstream stream;
-  stream << "[" << rotation.w() << ", " << GetVector3dString(rotation.vec())
-         << "]";
-  return stream.str();
-}
-
 }  // namespace
 
 PoseService::PoseService(SensorThread* sensor_thread)
diff --git a/services/vr/sensord/sensor_ndk_thread.cpp b/services/vr/sensord/sensor_ndk_thread.cpp
index 815453b..9c3abbc 100644
--- a/services/vr/sensord/sensor_ndk_thread.cpp
+++ b/services/vr/sensord/sensor_ndk_thread.cpp
@@ -37,11 +37,10 @@
     // Start ALooper and initialize sensor access.
     {
       std::unique_lock<std::mutex> lock(mutex_);
-      initialization_result_ = InitializeSensors();
+      InitializeSensors();
       thread_started_ = true;
       init_condition_.notify_one();
-      if (!initialization_result_)
-        return;
+      // Continue on failure - the loop below will periodically retry.
     }
 
     EventConsumer consumer;
@@ -61,7 +60,7 @@
       constexpr int kMaxEvents = 100;
       sensors_event_t events[kMaxEvents];
       ssize_t event_count = 0;
-      if (looper_ && sensor_manager_) {
+      if (initialization_result_) {
         int poll_fd, poll_events;
         void* poll_source;
         // Poll for events.
@@ -79,7 +78,6 @@
           // This happens when sensorservice has died and restarted. To avoid
           // spinning we need to restart the sensor access.
           DestroySensors();
-          InitializeSensors();
         }
       } else {
         // When there is no sensor_device_, we still call the consumer at
@@ -114,7 +112,8 @@
   }
 
   // At this point, we've successfully initialized everything.
-  *out_success = initialization_result_;
+  // The NDK sensor thread will continue to retry on error, so assume success here.
+  *out_success = true;
 }
 
 SensorNdkThread::~SensorNdkThread() {
@@ -167,10 +166,13 @@
     }
   }
 
+  initialization_result_ = true;
   return true;
 }
 
 void SensorNdkThread::DestroySensors() {
+  if (!event_queue_)
+    return;
   for (size_t sensor_index = 0; sensor_index < sensor_user_count_.size();
        ++sensor_index) {
     if (sensor_user_count_[sensor_index] > 0) {
@@ -178,9 +180,19 @@
     }
   }
   ASensorManager_destroyEventQueue(sensor_manager_, event_queue_);
+  event_queue_ = nullptr;
+  initialization_result_ = false;
 }
 
 void SensorNdkThread::UpdateSensorUse() {
+  if (!initialization_result_) {
+    // Sleep for 1 second to avoid spinning during system instability.
+    usleep(1000 * 1000);
+    InitializeSensors();
+    if (!initialization_result_)
+      return;
+  }
+
   if (!enable_sensors_.empty()) {
     for (int sensor_index : enable_sensors_) {
       if (sensor_user_count_[sensor_index]++ == 0) {
diff --git a/services/vr/virtual_touchpad/Android.mk b/services/vr/virtual_touchpad/Android.mk
index 4224aaa..b78eb99 100644
--- a/services/vr/virtual_touchpad/Android.mk
+++ b/services/vr/virtual_touchpad/Android.mk
@@ -6,13 +6,14 @@
 
 src := \
   EvdevInjector.cpp \
-  VirtualTouchpad.cpp
+  VirtualTouchpadEvdev.cpp
 
 shared_libs := \
   libbase
 
 include $(CLEAR_VARS)
 LOCAL_SRC_FILES := $(src)
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
 LOCAL_SHARED_LIBRARIES := $(shared_libs)
 LOCAL_CPPFLAGS += -std=c++11
 LOCAL_CFLAGS += -DLOG_TAG=\"VrVirtualTouchpad\"
@@ -29,11 +30,13 @@
 static_libs := \
   libbase \
   libcutils \
+  libutils \
   libvirtualtouchpad
 
 $(foreach file,$(test_src_files), \
     $(eval include $(CLEAR_VARS)) \
     $(eval LOCAL_SRC_FILES := $(file)) \
+    $(eval LOCAL_C_INCLUDES := $(LOCAL_PATH)/include) \
     $(eval LOCAL_STATIC_LIBRARIES := $(static_libs)) \
     $(eval LOCAL_SHARED_LIBRARIES := $(shared_libs)) \
     $(eval LOCAL_CPPFLAGS += -std=c++11) \
@@ -63,6 +66,7 @@
 
 include $(CLEAR_VARS)
 LOCAL_SRC_FILES := $(src)
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
 LOCAL_STATIC_LIBRARIES := $(static_libs)
 LOCAL_SHARED_LIBRARIES := $(shared_libs)
 LOCAL_CPPFLAGS += -std=c++11
@@ -74,3 +78,27 @@
 LOCAL_MULTILIB := 64
 LOCAL_CXX_STL := libc++_static
 include $(BUILD_EXECUTABLE)
+
+
+# Touchpad client library.
+
+src := \
+  VirtualTouchpadClient.cpp \
+  aidl/android/dvr/VirtualTouchpadService.aidl
+
+shared_libs := \
+  libbase \
+  libbinder \
+  libutils
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := $(src)
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
+LOCAL_SHARED_LIBRARIES := $(shared_libs)
+LOCAL_CPPFLAGS += -std=c++11
+LOCAL_CFLAGS += -DLOG_TAG=\"VirtualTouchpadClient\"
+LOCAL_LDLIBS := -llog
+LOCAL_MODULE := libvirtualtouchpadclient
+LOCAL_MODULE_TAGS := optional
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
+include $(BUILD_STATIC_LIBRARY)
diff --git a/services/vr/virtual_touchpad/VirtualTouchpad.h b/services/vr/virtual_touchpad/VirtualTouchpad.h
deleted file mode 100644
index 17aeb35..0000000
--- a/services/vr/virtual_touchpad/VirtualTouchpad.h
+++ /dev/null
@@ -1,77 +0,0 @@
-#ifndef ANDROID_DVR_VIRTUAL_TOUCHPAD_H
-#define ANDROID_DVR_VIRTUAL_TOUCHPAD_H
-
-#include <memory>
-
-#include "EvdevInjector.h"
-
-namespace android {
-namespace dvr {
-
-class EvdevInjector;
-
-// Provides a virtual touchpad for injecting events into the input system.
-//
-class VirtualTouchpad {
- public:
-  VirtualTouchpad() {}
-  ~VirtualTouchpad() {}
-
-  // |Intialize()| must be called once on a VirtualTouchpad before
-  // and other public method. Returns zero on success.
-  int Initialize();
-
-  // Generate a simulated touch event.
-  //
-  // @param x Horizontal touch position.
-  // @param y Vertical touch position.
-  //            Values must be in the range [0.0, 1.0).
-  // @param pressure Touch pressure.
-  //            Positive values represent contact; use 1.0f if contact
-  //            is binary. Use 0.0f for no contact.
-  // @returns Zero on success.
-  //
-  int Touch(float x, float y, float pressure);
-
-  // Generate a simulated touchpad button state.
-  //
-  // @param buttons A union of MotionEvent BUTTON_* values.
-  // @returns Zero on success.
-  //
-  // Currently only BUTTON_BACK is supported, as the implementation
-  // restricts itself to operations actually required by VrWindowManager.
-  //
-  int ButtonState(int buttons);
-
- protected:
-  // Must be called only between construction and Initialize().
-  inline void SetEvdevInjectorForTesting(EvdevInjector* injector) {
-    injector_ = injector;
-  }
-
- private:
-  // Except for testing, the |EvdevInjector| used to inject evdev events.
-  std::unique_ptr<EvdevInjector> owned_injector_;
-
-  // Active pointer to |owned_injector_| or to a testing injector.
-  EvdevInjector* injector_ = nullptr;
-
-  // Previous (x, y) position in device space, to suppress redundant events.
-  int32_t last_device_x_ = INT32_MIN;
-  int32_t last_device_y_ = INT32_MIN;
-
-  // Records current touch state (0=up 1=down) in bit 0, and previous state
-  // in bit 1, to track transitions.
-  int touches_ = 0;
-
-  // Previous injected button state, to detect changes.
-  int32_t last_motion_event_buttons_ = 0;
-
-  VirtualTouchpad(const VirtualTouchpad&) = delete;
-  void operator=(const VirtualTouchpad&) = delete;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_VIRTUAL_TOUCHPAD_H
diff --git a/services/vr/virtual_touchpad/VirtualTouchpadClient.cpp b/services/vr/virtual_touchpad/VirtualTouchpadClient.cpp
new file mode 100644
index 0000000..23a2e31
--- /dev/null
+++ b/services/vr/virtual_touchpad/VirtualTouchpadClient.cpp
@@ -0,0 +1,52 @@
+#include "VirtualTouchpadClient.h"
+
+#include <android/dvr/IVirtualTouchpadService.h>
+#include <binder/IServiceManager.h>
+
+namespace android {
+namespace dvr {
+
+namespace {
+
+class VirtualTouchpadClientImpl : public VirtualTouchpadClient {
+ public:
+  VirtualTouchpadClientImpl(sp<IVirtualTouchpadService> service)
+      : service_(service) {}
+  ~VirtualTouchpadClientImpl() {}
+
+  status_t Touch(float x, float y, float pressure) override {
+    if (service_ == nullptr) {
+      return NO_INIT;
+    }
+    return service_->touch(x, y, pressure).transactionError();
+  }
+  status_t ButtonState(int buttons) override {
+    if (service_ == nullptr) {
+      return NO_INIT;
+    }
+    return service_->buttonState(buttons).transactionError();
+  }
+
+ private:
+  sp<IVirtualTouchpadService> service_;
+};
+
+}  // anonymous namespace
+
+sp<VirtualTouchpad> VirtualTouchpadClient::Create() {
+  sp<IServiceManager> sm = defaultServiceManager();
+  if (sm == nullptr) {
+    ALOGE("no service manager");
+    return sp<VirtualTouchpad>();
+  }
+  sp<IVirtualTouchpadService> service = interface_cast<IVirtualTouchpadService>(
+      sm->getService(IVirtualTouchpadService::SERVICE_NAME()));
+  if (service == nullptr) {
+    ALOGE("failed to get service");
+    return sp<VirtualTouchpad>();
+  }
+  return new VirtualTouchpadClientImpl(service);
+}
+
+}  // namespace dvr
+}  // namespace android
diff --git a/services/vr/virtual_touchpad/VirtualTouchpad.cpp b/services/vr/virtual_touchpad/VirtualTouchpadEvdev.cpp
similarity index 87%
rename from services/vr/virtual_touchpad/VirtualTouchpad.cpp
rename to services/vr/virtual_touchpad/VirtualTouchpadEvdev.cpp
index 4793058..ae31156 100644
--- a/services/vr/virtual_touchpad/VirtualTouchpad.cpp
+++ b/services/vr/virtual_touchpad/VirtualTouchpadEvdev.cpp
@@ -1,4 +1,4 @@
-#include "VirtualTouchpad.h"
+#include "VirtualTouchpadEvdev.h"
 
 #include <android/input.h>
 #include <inttypes.h>
@@ -30,7 +30,17 @@
 
 }  // anonymous namespace
 
-int VirtualTouchpad::Initialize() {
+sp<VirtualTouchpad> VirtualTouchpadEvdev::Create() {
+  VirtualTouchpadEvdev* const touchpad = new VirtualTouchpadEvdev();
+  const status_t status = touchpad->Initialize();
+  if (status) {
+    ALOGE("initialization failed: %d", status);
+    return sp<VirtualTouchpad>();
+  }
+  return sp<VirtualTouchpad>(touchpad);
+}
+
+int VirtualTouchpadEvdev::Initialize() {
   if (!injector_) {
     owned_injector_.reset(new EvdevInjector());
     injector_ = owned_injector_.get();
@@ -46,7 +56,7 @@
   return injector_->GetError();
 }
 
-int VirtualTouchpad::Touch(float x, float y, float pressure) {
+int VirtualTouchpadEvdev::Touch(float x, float y, float pressure) {
   if ((x < 0.0f) || (x >= 1.0f) || (y < 0.0f) || (y >= 1.0f)) {
     return EINVAL;
   }
@@ -91,7 +101,7 @@
   return injector_->GetError();
 }
 
-int VirtualTouchpad::ButtonState(int buttons) {
+int VirtualTouchpadEvdev::ButtonState(int buttons) {
   const int changes = last_motion_event_buttons_ ^ buttons;
   if (!changes) {
     return 0;
diff --git a/services/vr/virtual_touchpad/VirtualTouchpadEvdev.h b/services/vr/virtual_touchpad/VirtualTouchpadEvdev.h
new file mode 100644
index 0000000..c763529
--- /dev/null
+++ b/services/vr/virtual_touchpad/VirtualTouchpadEvdev.h
@@ -0,0 +1,59 @@
+#ifndef ANDROID_DVR_VIRTUAL_TOUCHPAD_EVDEV_H
+#define ANDROID_DVR_VIRTUAL_TOUCHPAD_EVDEV_H
+
+#include <memory>
+
+#include "VirtualTouchpad.h"
+#include "EvdevInjector.h"
+
+namespace android {
+namespace dvr {
+
+class EvdevInjector;
+
+// VirtualTouchpadEvdev implements a VirtualTouchpad by injecting evdev events.
+//
+class VirtualTouchpadEvdev : public VirtualTouchpad {
+ public:
+  static sp<VirtualTouchpad> Create();
+
+  // VirtualTouchpad implementation:
+  status_t Touch(float x, float y, float pressure) override;
+  status_t ButtonState(int buttons) override;
+
+ protected:
+  VirtualTouchpadEvdev() {}
+  ~VirtualTouchpadEvdev() {}
+  status_t Initialize();
+
+  // Must be called only between construction and Initialize().
+  inline void SetEvdevInjectorForTesting(EvdevInjector* injector) {
+    injector_ = injector;
+  }
+
+ private:
+  // Except for testing, the |EvdevInjector| used to inject evdev events.
+  std::unique_ptr<EvdevInjector> owned_injector_;
+
+  // Active pointer to |owned_injector_| or to a testing injector.
+  EvdevInjector* injector_ = nullptr;
+
+  // Previous (x, y) position in device space, to suppress redundant events.
+  int32_t last_device_x_ = INT32_MIN;
+  int32_t last_device_y_ = INT32_MIN;
+
+  // Records current touch state (0=up 1=down) in bit 0, and previous state
+  // in bit 1, to track transitions.
+  int touches_ = 0;
+
+  // Previous injected button state, to detect changes.
+  int32_t last_motion_event_buttons_ = 0;
+
+  VirtualTouchpadEvdev(const VirtualTouchpadEvdev&) = delete;
+  void operator=(const VirtualTouchpadEvdev&) = delete;
+};
+
+}  // namespace dvr
+}  // namespace android
+
+#endif  // ANDROID_DVR_VIRTUAL_TOUCHPAD_EVDEV_H
diff --git a/services/vr/virtual_touchpad/VirtualTouchpadService.cpp b/services/vr/virtual_touchpad/VirtualTouchpadService.cpp
index 25c1a4f..3fcb8fc 100644
--- a/services/vr/virtual_touchpad/VirtualTouchpadService.cpp
+++ b/services/vr/virtual_touchpad/VirtualTouchpadService.cpp
@@ -8,19 +8,15 @@
 namespace android {
 namespace dvr {
 
-int VirtualTouchpadService::Initialize() {
-  return touchpad_.Initialize();
-}
-
 binder::Status VirtualTouchpadService::touch(float x, float y, float pressure) {
-  const int error = touchpad_.Touch(x, y, pressure);
-  return error ? binder::Status::fromServiceSpecificError(error)
+  const status_t error = touchpad_->Touch(x, y, pressure);
+  return error ? binder::Status::fromStatusT(error)
                : binder::Status::ok();
 }
 
 binder::Status VirtualTouchpadService::buttonState(int buttons) {
-  const int error = touchpad_.ButtonState(buttons);
-  return error ? binder::Status::fromServiceSpecificError(error)
+  const status_t error = touchpad_->ButtonState(buttons);
+  return error ? binder::Status::fromStatusT(error)
                : binder::Status::ok();
 }
 
diff --git a/services/vr/virtual_touchpad/VirtualTouchpadService.h b/services/vr/virtual_touchpad/VirtualTouchpadService.h
index e2426e3..b832c8f 100644
--- a/services/vr/virtual_touchpad/VirtualTouchpadService.h
+++ b/services/vr/virtual_touchpad/VirtualTouchpadService.h
@@ -13,22 +13,16 @@
 //
 class VirtualTouchpadService : public BnVirtualTouchpadService {
  public:
-  VirtualTouchpadService(VirtualTouchpad& touchpad)
+  VirtualTouchpadService(sp<VirtualTouchpad> touchpad)
       : touchpad_(touchpad) {}
 
-  // Must be called before clients can connect.
-  // Returns 0 if initialization is successful.
-  int Initialize();
-
-  static char const* getServiceName() { return "virtual_touchpad"; }
-
  protected:
   // Implements IVirtualTouchpadService.
-  ::android::binder::Status touch(float x, float y, float pressure) override;
-  ::android::binder::Status buttonState(int buttons) override;
+  binder::Status touch(float x, float y, float pressure) override;
+  binder::Status buttonState(int buttons) override;
 
  private:
-  VirtualTouchpad& touchpad_;
+  sp<VirtualTouchpad> touchpad_;
 
   VirtualTouchpadService(const VirtualTouchpadService&) = delete;
   void operator=(const VirtualTouchpadService&) = delete;
diff --git a/services/vr/virtual_touchpad/aidl/android/dvr/VirtualTouchpadService.aidl b/services/vr/virtual_touchpad/aidl/android/dvr/VirtualTouchpadService.aidl
index e048837..c2044da 100644
--- a/services/vr/virtual_touchpad/aidl/android/dvr/VirtualTouchpadService.aidl
+++ b/services/vr/virtual_touchpad/aidl/android/dvr/VirtualTouchpadService.aidl
@@ -3,6 +3,8 @@
 /** @hide */
 interface VirtualTouchpadService
 {
+  const String SERVICE_NAME = "virtual_touchpad";
+
   /**
    * Generate a simulated touch event.
    *
diff --git a/services/vr/virtual_touchpad/include/VirtualTouchpad.h b/services/vr/virtual_touchpad/include/VirtualTouchpad.h
new file mode 100644
index 0000000..bbaf69b
--- /dev/null
+++ b/services/vr/virtual_touchpad/include/VirtualTouchpad.h
@@ -0,0 +1,57 @@
+#ifndef ANDROID_DVR_VIRTUAL_TOUCHPAD_INTERFACE_H
+#define ANDROID_DVR_VIRTUAL_TOUCHPAD_INTERFACE_H
+
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+#include <utils/StrongPointer.h>
+
+namespace android {
+namespace dvr {
+
+// Provides a virtual touchpad for injecting events into the input system.
+//
+class VirtualTouchpad : public RefBase {
+ public:
+  // Create a virtual touchpad.
+  // Implementations should provide this, and hide their constructors.
+  // For the user, switching implementations should be as simple as changing
+  // the class whose |Create()| is called.
+  static sp<VirtualTouchpad> Create() {
+    return sp<VirtualTouchpad>();
+  }
+
+  // Generate a simulated touch event.
+  //
+  // @param x Horizontal touch position.
+  // @param y Vertical touch position.
+  //            Values must be in the range [0.0, 1.0).
+  // @param pressure Touch pressure.
+  //            Positive values represent contact; use 1.0f if contact
+  //            is binary. Use 0.0f for no contact.
+  // @returns OK on success.
+  //
+  virtual status_t Touch(float x, float y, float pressure) = 0;
+
+  // Generate a simulated touchpad button state.
+  //
+  // @param buttons A union of MotionEvent BUTTON_* values.
+  // @returns OK on success.
+  //
+  // Currently only BUTTON_BACK is supported, as the implementation
+  // restricts itself to operations actually required by VrWindowManager.
+  //
+  virtual status_t ButtonState(int buttons) = 0;
+
+ protected:
+  VirtualTouchpad() {}
+  virtual ~VirtualTouchpad() {}
+
+ private:
+  VirtualTouchpad(const VirtualTouchpad&) = delete;
+  void operator=(const VirtualTouchpad&) = delete;
+};
+
+}  // namespace dvr
+}  // namespace android
+
+#endif  // ANDROID_DVR_VIRTUAL_TOUCHPAD_INTERFACE_H
diff --git a/services/vr/virtual_touchpad/include/VirtualTouchpadClient.h b/services/vr/virtual_touchpad/include/VirtualTouchpadClient.h
new file mode 100644
index 0000000..46bec0e
--- /dev/null
+++ b/services/vr/virtual_touchpad/include/VirtualTouchpadClient.h
@@ -0,0 +1,31 @@
+#ifndef ANDROID_DVR_VIRTUAL_TOUCHPAD_CLIENT_H
+#define ANDROID_DVR_VIRTUAL_TOUCHPAD_CLIENT_H
+
+#include "VirtualTouchpad.h"
+
+namespace android {
+namespace dvr {
+
+// VirtualTouchpadClient implements a VirtualTouchpad by connecting to
+// a VirtualTouchpadService over Binder.
+//
+class VirtualTouchpadClient : public VirtualTouchpad {
+ public:
+  // VirtualTouchpad implementation:
+  static sp<VirtualTouchpad> Create();
+  status_t Touch(float x, float y, float pressure) override;
+  status_t ButtonState(int buttons) override;
+
+ protected:
+  VirtualTouchpadClient() {}
+  virtual ~VirtualTouchpadClient() {}
+
+ private:
+  VirtualTouchpadClient(const VirtualTouchpadClient&) = delete;
+  void operator=(const VirtualTouchpadClient&) = delete;
+};
+
+}  // namespace dvr
+}  // namespace android
+
+#endif  // ANDROID_DVR_VIRTUAL_TOUCHPAD_CLIENT_H
diff --git a/services/vr/virtual_touchpad/main.cpp b/services/vr/virtual_touchpad/main.cpp
index 1debe9f..e73f8b9 100644
--- a/services/vr/virtual_touchpad/main.cpp
+++ b/services/vr/virtual_touchpad/main.cpp
@@ -3,17 +3,13 @@
 #include <binder/ProcessState.h>
 #include <log/log.h>
 
+#include "VirtualTouchpadEvdev.h"
 #include "VirtualTouchpadService.h"
 
 int main() {
   ALOGI("Starting");
-  android::dvr::VirtualTouchpad touchpad;
-  android::dvr::VirtualTouchpadService touchpad_service(touchpad);
-  const int touchpad_status = touchpad_service.Initialize();
-  if (touchpad_status) {
-    ALOGE("virtual touchpad initialization failed: %d", touchpad_status);
-    exit(1);
-  }
+  android::dvr::VirtualTouchpadService touchpad_service(
+      android::dvr::VirtualTouchpadEvdev::Create());
 
   signal(SIGPIPE, SIG_IGN);
   android::sp<android::ProcessState> ps(android::ProcessState::self());
@@ -23,7 +19,7 @@
 
   android::sp<android::IServiceManager> sm(android::defaultServiceManager());
   const android::status_t service_status =
-      sm->addService(android::String16(touchpad_service.getServiceName()),
+      sm->addService(android::String16(touchpad_service.SERVICE_NAME()),
                      &touchpad_service, false /*allowIsolated*/);
   if (service_status != android::OK) {
     ALOGE("virtual touchpad service not added: %d",
diff --git a/services/vr/virtual_touchpad/tests/VirtualTouchpad_test.cpp b/services/vr/virtual_touchpad/tests/VirtualTouchpad_test.cpp
index 256c6bc..b448fd1 100644
--- a/services/vr/virtual_touchpad/tests/VirtualTouchpad_test.cpp
+++ b/services/vr/virtual_touchpad/tests/VirtualTouchpad_test.cpp
@@ -1,12 +1,12 @@
 #include <android/input.h>
+#include <gtest/gtest.h>
+#include <linux/input.h>
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
-#include <gtest/gtest.h>
-#include <linux/input.h>
 
 #include "EvdevInjector.h"
-#include "VirtualTouchpad.h"
+#include "VirtualTouchpadEvdev.h"
 
 namespace android {
 namespace dvr {
@@ -21,7 +21,7 @@
     event.type = type;
     event.code = code;
     event.value = value;
-    Write(&event, sizeof (event));
+    Write(&event, sizeof(event));
   }
 };
 
@@ -87,16 +87,17 @@
 
 class EvdevInjectorForTesting : public EvdevInjector {
  public:
-  EvdevInjectorForTesting(UInput& uinput) {
-    SetUInputForTesting(&uinput);
-  }
+  EvdevInjectorForTesting(UInput& uinput) { SetUInputForTesting(&uinput); }
   const uinput_user_dev* GetUiDev() const { return GetUiDevForTesting(); }
 };
 
-class VirtualTouchpadForTesting : public VirtualTouchpad {
+class VirtualTouchpadForTesting : public VirtualTouchpadEvdev {
  public:
-  VirtualTouchpadForTesting(EvdevInjector& injector) {
-    SetEvdevInjectorForTesting(&injector);
+  static sp<VirtualTouchpad> Create(EvdevInjectorForTesting& injector) {
+    VirtualTouchpadForTesting* const touchpad = new VirtualTouchpadForTesting();
+    touchpad->SetEvdevInjectorForTesting(&injector);
+    touchpad->Initialize();
+    return sp<VirtualTouchpad>(touchpad);
   }
 };
 
@@ -113,17 +114,13 @@
 
 }  // anonymous namespace
 
-class VirtualTouchpadTest : public testing::Test {
-};
+class VirtualTouchpadTest : public testing::Test {};
 
 TEST_F(VirtualTouchpadTest, Goodness) {
   UInputRecorder expect;
   UInputRecorder record;
   EvdevInjectorForTesting injector(record);
-  VirtualTouchpadForTesting touchpad(injector);
-
-  const int initialization_status = touchpad.Initialize();
-  EXPECT_EQ(0, initialization_status);
+  sp<VirtualTouchpad> touchpad(VirtualTouchpadForTesting::Create(injector));
 
   // Check some aspects of uinput_user_dev.
   const uinput_user_dev* uidev = injector.GetUiDev();
@@ -154,13 +151,13 @@
   expect.IoctlSetInt(UI_SET_EVBIT, EV_KEY);
   expect.IoctlSetInt(UI_SET_KEYBIT, BTN_TOUCH);
   // From ConfigureEnd():
-  expect.Write(uidev, sizeof (uinput_user_dev));
+  expect.Write(uidev, sizeof(uinput_user_dev));
   expect.IoctlVoid(UI_DEV_CREATE);
   EXPECT_EQ(expect.GetString(), record.GetString());
 
   expect.Reset();
   record.Reset();
-  int touch_status = touchpad.Touch(0, 0, 0);
+  int touch_status = touchpad->Touch(0, 0, 0);
   EXPECT_EQ(0, touch_status);
   expect.WriteInputEvent(EV_ABS, ABS_MT_SLOT, 0);
   expect.WriteInputEvent(EV_ABS, ABS_MT_TRACKING_ID, 0);
@@ -171,7 +168,7 @@
 
   expect.Reset();
   record.Reset();
-  touch_status = touchpad.Touch(0.25f, 0.75f, 0.5f);
+  touch_status = touchpad->Touch(0.25f, 0.75f, 0.5f);
   EXPECT_EQ(0, touch_status);
   expect.WriteInputEvent(EV_ABS, ABS_MT_TRACKING_ID, 0);
   expect.WriteInputEvent(EV_ABS, ABS_MT_POSITION_X, 0.25f * width);
@@ -182,7 +179,7 @@
 
   expect.Reset();
   record.Reset();
-  touch_status = touchpad.Touch(1.0f, 1.0f, 1.0f);
+  touch_status = touchpad->Touch(1.0f, 1.0f, 1.0f);
   EXPECT_EQ(0, touch_status);
   expect.WriteInputEvent(EV_ABS, ABS_MT_TRACKING_ID, 0);
   expect.WriteInputEvent(EV_ABS, ABS_MT_POSITION_X, width);
@@ -192,7 +189,7 @@
 
   expect.Reset();
   record.Reset();
-  touch_status = touchpad.Touch(0.25f, 0.75f, -0.01f);
+  touch_status = touchpad->Touch(0.25f, 0.75f, -0.01f);
   EXPECT_EQ(0, touch_status);
   expect.WriteInputEvent(EV_KEY, BTN_TOUCH, EvdevInjector::KEY_RELEASE);
   expect.WriteInputEvent(EV_ABS, ABS_MT_TRACKING_ID, -1);
@@ -201,7 +198,7 @@
 
   expect.Reset();
   record.Reset();
-  touch_status = touchpad.ButtonState(AMOTION_EVENT_BUTTON_BACK);
+  touch_status = touchpad->ButtonState(AMOTION_EVENT_BUTTON_BACK);
   EXPECT_EQ(0, touch_status);
   expect.WriteInputEvent(EV_KEY, BTN_BACK, EvdevInjector::KEY_PRESS);
   expect.WriteInputEvent(EV_SYN, SYN_REPORT, 0);
@@ -209,13 +206,13 @@
 
   expect.Reset();
   record.Reset();
-  touch_status = touchpad.ButtonState(AMOTION_EVENT_BUTTON_BACK);
+  touch_status = touchpad->ButtonState(AMOTION_EVENT_BUTTON_BACK);
   EXPECT_EQ(0, touch_status);
   EXPECT_EQ(expect.GetString(), record.GetString());
 
   expect.Reset();
   record.Reset();
-  touch_status = touchpad.ButtonState(0);
+  touch_status = touchpad->ButtonState(0);
   EXPECT_EQ(0, touch_status);
   expect.WriteInputEvent(EV_KEY, BTN_BACK, EvdevInjector::KEY_RELEASE);
   expect.WriteInputEvent(EV_SYN, SYN_REPORT, 0);
@@ -229,56 +226,29 @@
   UInputRecorder expect;
   UInputRecorder record;
   EvdevInjectorForTesting injector(record);
-  VirtualTouchpadForTesting touchpad(injector);
-
-  // Touch before initialization should return an error,
-  // and should not result in any system calls.
-  expect.Reset();
-  record.Reset();
-  int touch_status = touchpad.Touch(0.25f, 0.75f, -0.01f);
-  EXPECT_NE(0, touch_status);
-  EXPECT_EQ(expect.GetString(), record.GetString());
-
-  // Button change before initialization should return an error,
-  // and should not result in any system calls.
-  expect.Reset();
-  record.Reset();
-  touch_status = touchpad.ButtonState(AMOTION_EVENT_BUTTON_BACK);
-  EXPECT_NE(0, touch_status);
-  EXPECT_EQ(expect.GetString(), record.GetString());
-
-  expect.Reset();
-  record.Reset();
-  touchpad.Initialize();
-
-  // Repeated initialization should return an error,
-  // and should not result in any system calls.
-  expect.Reset();
-  record.Reset();
-  const int initialization_status = touchpad.Initialize();
-  EXPECT_NE(0, initialization_status);
-  EXPECT_EQ(expect.GetString(), record.GetString());
+  sp<VirtualTouchpad> touchpad(
+      VirtualTouchpadForTesting::Create(injector));
 
   // Touch off-screen should return an error,
   // and should not result in any system calls.
   expect.Reset();
   record.Reset();
-  touch_status = touchpad.Touch(-0.25f, 0.75f, 1.0f);
-  EXPECT_NE(0, touch_status);
-  touch_status = touchpad.Touch(0.25f, -0.75f, 1.0f);
-  EXPECT_NE(0, touch_status);
-  touch_status = touchpad.Touch(1.25f, 0.75f, 1.0f);
-  EXPECT_NE(0, touch_status);
-  touch_status = touchpad.Touch(0.25f, 1.75f, 1.0f);
-  EXPECT_NE(0, touch_status);
+  status_t touch_status = touchpad->Touch(-0.25f, 0.75f, 1.0f);
+  EXPECT_NE(OK, touch_status);
+  touch_status = touchpad->Touch(0.25f, -0.75f, 1.0f);
+  EXPECT_NE(OK, touch_status);
+  touch_status = touchpad->Touch(1.25f, 0.75f, 1.0f);
+  EXPECT_NE(OK, touch_status);
+  touch_status = touchpad->Touch(0.25f, 1.75f, 1.0f);
+  EXPECT_NE(OK, touch_status);
   EXPECT_EQ(expect.GetString(), record.GetString());
 
   // Unsupported button should return an error,
   // and should not result in any system calls.
   expect.Reset();
   record.Reset();
-  touch_status = touchpad.ButtonState(AMOTION_EVENT_BUTTON_FORWARD);
-  EXPECT_NE(0, touch_status);
+  touch_status = touchpad->ButtonState(AMOTION_EVENT_BUTTON_FORWARD);
+  EXPECT_NE(OK, touch_status);
   EXPECT_EQ(expect.GetString(), record.GetString());
 }
 
diff --git a/services/vr/vr_window_manager/Android.mk b/services/vr/vr_window_manager/Android.mk
index e9552bc..ddb58e9 100644
--- a/services/vr/vr_window_manager/Android.mk
+++ b/services/vr/vr_window_manager/Android.mk
@@ -14,29 +14,6 @@
 
 LOCAL_PATH := $(call my-dir)
 
-binder_src := \
-  vr_window_manager_binder.cpp \
-  aidl/android/service/vr/IVrWindowManager.aidl
-
-static_libs := \
-  libcutils
-
-shared_libs := \
-  libbase \
-  libbinder \
-  libutils
-
-include $(CLEAR_VARS)
-LOCAL_SRC_FILES := $(binder_src)
-LOCAL_STATIC_LIBRARIES := $(static_libs)
-LOCAL_SHARED_LIBRARIES := $(shared_libs)
-LOCAL_CPPFLAGS += -std=c++11
-LOCAL_CFLAGS += -DLOG_TAG=\"VrWindowManager\"
-LOCAL_LDLIBS := -llog
-LOCAL_MODULE := libvrwm_binder
-LOCAL_MODULE_TAGS := optional
-include $(BUILD_STATIC_LIBRARY)
-
 native_src := \
   application.cpp \
   controller_mesh.cpp \
@@ -47,7 +24,8 @@
   surface_flinger_view.cpp \
   texture.cpp \
   vr_window_manager.cpp \
-  ../virtual_touchpad/aidl/android/dvr/VirtualTouchpadService.aidl \
+  vr_window_manager_binder.cpp \
+  aidl/android/service/vr/IVrWindowManager.aidl
 
 static_libs := \
   libdisplay \
@@ -61,12 +39,13 @@
   libperformance \
   libpdx_default_transport \
   libcutils \
+  libvr_manager \
+  libvirtualtouchpadclient
 
 shared_libs := \
   android.dvr.composer@1.0 \
   android.hardware.graphics.composer@2.1 \
   libvrhwc \
-  libandroid \
   libbase \
   libbinder \
   libinput \
@@ -85,7 +64,7 @@
 
 include $(CLEAR_VARS)
 LOCAL_SRC_FILES := $(native_src)
-LOCAL_STATIC_LIBRARIES := $(static_libs) libvrwm_binder
+LOCAL_STATIC_LIBRARIES := $(static_libs)
 LOCAL_SHARED_LIBRARIES := $(shared_libs)
 LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES
 LOCAL_CFLAGS += -DEGL_EGLEXT_PROTOTYPES
diff --git a/services/vr/vr_window_manager/application.cpp b/services/vr/vr_window_manager/application.cpp
index 33cd499..dba797f 100644
--- a/services/vr/vr_window_manager/application.cpp
+++ b/services/vr/vr_window_manager/application.cpp
@@ -1,5 +1,6 @@
 #include "application.h"
 
+#include <inttypes.h>
 #include <EGL/egl.h>
 #include <GLES3/gl3.h>
 #include <binder/IServiceManager.h>
@@ -16,9 +17,16 @@
 namespace android {
 namespace dvr {
 
-Application::Application() {}
+Application::Application() {
+  vr_mode_listener_ = new VrModeListener(this);
+}
 
 Application::~Application() {
+  sp<IVrManager> vrManagerService = interface_cast<IVrManager>(
+      defaultServiceManager()->getService(String16("vrmanager")));
+  if (vrManagerService.get()) {
+    vrManagerService->unregisterListener(vr_mode_listener_);
+  }
 }
 
 int Application::Initialize() {
@@ -28,6 +36,11 @@
   elbow_model_.Enable(ElbowModel::kDefaultNeckPosition, is_right_handed);
   last_frame_time_ = std::chrono::system_clock::now();
 
+  sp<IVrManager> vrManagerService = interface_cast<IVrManager>(
+      defaultServiceManager()->getService(String16("vrmanager")));
+  if (vrManagerService.get()) {
+    vrManagerService->registerListener(vr_mode_listener_);
+  }
   return 0;
 }
 
@@ -273,6 +286,11 @@
 }
 
 void Application::SetVisibility(bool visible) {
+  if (visible && !initialized_) {
+    if (AllocateResources())
+      ALOGE("Failed to allocate resources");
+  }
+
   bool changed = is_visible_ != visible;
   if (changed) {
     is_visible_ = visible;
@@ -295,5 +313,10 @@
   wake_up_init_and_render_.notify_one();
 }
 
+void Application::VrModeListener::onVrStateChanged(bool enabled) {
+  if (!enabled)
+    app_->QueueTask(MainThreadTask::ExitingVrMode);
+}
+
 }  // namespace dvr
 }  // namespace android
diff --git a/services/vr/vr_window_manager/application.h b/services/vr/vr_window_manager/application.h
index c7aa4dd..2c60e0a 100644
--- a/services/vr/vr_window_manager/application.h
+++ b/services/vr/vr_window_manager/application.h
@@ -4,6 +4,7 @@
 #include <memory>
 #include <private/dvr/types.h>
 #include <stdint.h>
+#include <vr/vr_manager/vr_manager.h>
 
 #include <chrono>
 #include <mutex>
@@ -43,6 +44,16 @@
     Show,
   };
 
+  class VrModeListener : public BnVrStateCallbacks {
+   public:
+    VrModeListener(Application *app) : app_(app) {}
+    void onVrStateChanged(bool enabled) override;
+
+   private:
+    Application *app_;
+  };
+
+  sp<VrModeListener> vr_mode_listener_;
   virtual void OnDrawFrame() = 0;
   virtual void DrawEye(EyeType eye, const mat4& perspective,
                        const mat4& eye_matrix, const mat4& head_matrix) = 0;
diff --git a/services/vr/vr_window_manager/composer/1.0/Android.bp b/services/vr/vr_window_manager/composer/1.0/Android.bp
index 5e791a7..58f83f8 100644
--- a/services/vr/vr_window_manager/composer/1.0/Android.bp
+++ b/services/vr/vr_window_manager/composer/1.0/Android.bp
@@ -6,13 +6,9 @@
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hidl:system/libhidl/transport -randroid.hardware:hardware/interfaces/ -randroid.dvr:frameworks/native/services/vr/vr_window_manager android.dvr.composer@1.0",
     srcs: [
         "IVrComposerClient.hal",
-        "IVrComposerView.hal",
-        "IVrComposerCallback.hal",
     ],
     out: [
         "android/dvr/composer/1.0/VrComposerClientAll.cpp",
-        "android/dvr/composer/1.0/VrComposerViewAll.cpp",
-        "android/dvr/composer/1.0/VrComposerCallbackAll.cpp",
     ],
 }
 
@@ -22,8 +18,6 @@
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hidl:system/libhidl/transport -randroid.hardware:hardware/interfaces/ -randroid.dvr:frameworks/native/services/vr/vr_window_manager android.dvr.composer@1.0",
     srcs: [
         "IVrComposerClient.hal",
-        "IVrComposerView.hal",
-        "IVrComposerCallback.hal",
     ],
     out: [
         "android/dvr/composer/1.0/IVrComposerClient.h",
@@ -31,18 +25,6 @@
         "android/dvr/composer/1.0/BnHwVrComposerClient.h",
         "android/dvr/composer/1.0/BpHwVrComposerClient.h",
         "android/dvr/composer/1.0/BsVrComposerClient.h",
-
-        "android/dvr/composer/1.0/IVrComposerView.h",
-        "android/dvr/composer/1.0/IHwVrComposerView.h",
-        "android/dvr/composer/1.0/BnHwVrComposerView.h",
-        "android/dvr/composer/1.0/BpHwVrComposerView.h",
-        "android/dvr/composer/1.0/BsVrComposerView.h",
-
-        "android/dvr/composer/1.0/IVrComposerCallback.h",
-        "android/dvr/composer/1.0/IHwVrComposerCallback.h",
-        "android/dvr/composer/1.0/BnHwVrComposerCallback.h",
-        "android/dvr/composer/1.0/BpHwVrComposerCallback.h",
-        "android/dvr/composer/1.0/BsVrComposerCallback.h",
     ],
 }
 
diff --git a/services/vr/vr_window_manager/composer/1.0/IVrComposerCallback.hal b/services/vr/vr_window_manager/composer/1.0/IVrComposerCallback.hal
deleted file mode 100644
index 6e7255e..0000000
--- a/services/vr/vr_window_manager/composer/1.0/IVrComposerCallback.hal
+++ /dev/null
@@ -1,18 +0,0 @@
-package android.dvr.composer@1.0;
-
-import android.hardware.graphics.composer@2.1::IComposerClient;
-
-interface IVrComposerCallback {
-    struct Layer {
-        handle buffer;
-        handle fence;
-        android.hardware.graphics.composer@2.1::IComposerClient.Rect display_frame;
-        android.hardware.graphics.composer@2.1::IComposerClient.FRect crop;
-        android.hardware.graphics.composer@2.1::IComposerClient.BlendMode blend_mode;
-        float alpha;
-        uint32_t type;
-        uint32_t app_id;
-    };
-
-    onNewFrame(vec<Layer> frame);
-};
diff --git a/services/vr/vr_window_manager/composer/1.0/IVrComposerView.hal b/services/vr/vr_window_manager/composer/1.0/IVrComposerView.hal
deleted file mode 100644
index e16131a..0000000
--- a/services/vr/vr_window_manager/composer/1.0/IVrComposerView.hal
+++ /dev/null
@@ -1,9 +0,0 @@
-package android.dvr.composer@1.0;
-
-import IVrComposerCallback;
-
-interface IVrComposerView {
-    registerCallback(IVrComposerCallback callback);
-
-    releaseFrame();
-};
diff --git a/services/vr/vr_window_manager/composer/Android.bp b/services/vr/vr_window_manager/composer/Android.bp
index 08c105c..7c8bb86 100644
--- a/services/vr/vr_window_manager/composer/Android.bp
+++ b/services/vr/vr_window_manager/composer/Android.bp
@@ -6,7 +6,6 @@
   name: "libvrhwc",
 
   srcs: [
-    "impl/sync_timeline.cpp",
     "impl/vr_composer_view.cpp",
     "impl/vr_hwc.cpp",
     "impl/vr_composer_client.cpp",
@@ -33,11 +32,6 @@
 
   export_include_dirs: ["."],
 
-  include_dirs: [
-    // Access to software sync timeline.
-    "system/core/libsync",
-  ],
-
   cflags: [
     "-DLOG_TAG=\"vrhwc\"",
   ],
diff --git a/services/vr/vr_window_manager/composer/impl/sync_timeline.cpp b/services/vr/vr_window_manager/composer/impl/sync_timeline.cpp
deleted file mode 100644
index e63ed26..0000000
--- a/services/vr/vr_window_manager/composer/impl/sync_timeline.cpp
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Copyright 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "sync_timeline.h"
-
-#include <sys/cdefs.h>
-#include <sw_sync.h>
-#include <unistd.h>
-
-namespace android {
-namespace dvr {
-
-SyncTimeline::SyncTimeline() {}
-
-SyncTimeline::~SyncTimeline() {}
-
-bool SyncTimeline::Initialize() {
-  timeline_fd_.reset(sw_sync_timeline_create());
-  return timeline_fd_ >= 0;
-}
-
-int SyncTimeline::CreateFence(int time) {
-  return sw_sync_fence_create(timeline_fd_.get(), "dummy fence", time);
-}
-
-bool SyncTimeline::IncrementTimeline() {
-  return sw_sync_timeline_inc(timeline_fd_.get(), 1) == 0;
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/services/vr/vr_window_manager/composer/impl/sync_timeline.h b/services/vr/vr_window_manager/composer/impl/sync_timeline.h
deleted file mode 100644
index 945acbd..0000000
--- a/services/vr/vr_window_manager/composer/impl/sync_timeline.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#ifndef VR_WINDOW_MANAGER_COMPOSER_IMPL_SYNC_TIMELINE_H_
-#define VR_WINDOW_MANAGER_COMPOSER_IMPL_SYNC_TIMELINE_H_
-
-#include <android-base/unique_fd.h>
-
-namespace android {
-namespace dvr {
-
-// TODO(dnicoara): Remove this and move to EGL based fences.
-class SyncTimeline {
- public:
-  SyncTimeline();
-  ~SyncTimeline();
-
-  bool Initialize();
-
-  int CreateFence(int time);
-  bool IncrementTimeline();
-
- private:
-  base::unique_fd timeline_fd_;
-
-  SyncTimeline(const SyncTimeline&) = delete;
-  void operator=(const SyncTimeline&) = delete;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // VR_WINDOW_MANAGER_COMPOSER_IMPL_SYNC_TIMELINE_H_
diff --git a/services/vr/vr_window_manager/composer/impl/vr_composer_view.cpp b/services/vr/vr_window_manager/composer/impl/vr_composer_view.cpp
index 1096a37..299e8f1 100644
--- a/services/vr/vr_window_manager/composer/impl/vr_composer_view.cpp
+++ b/services/vr/vr_window_manager/composer/impl/vr_composer_view.cpp
@@ -16,19 +16,12 @@
   composer_view_->RegisterObserver(this);
 }
 
-void VrComposerView::ReleaseFrame() {
-  LOG_ALWAYS_FATAL_IF(!composer_view_, "VrComposerView not initialized");
-  composer_view_->ReleaseFrame();
-}
-
-void VrComposerView::OnNewFrame(const ComposerView::Frame& frame) {
+base::unique_fd VrComposerView::OnNewFrame(const ComposerView::Frame& frame) {
   std::lock_guard<std::mutex> guard(mutex_);
-  if (!callback_.get()) {
-    ReleaseFrame();
-    return;
-  }
+  if (!callback_.get())
+    return base::unique_fd();
 
-  callback_->OnNewFrame(frame);
+  return callback_->OnNewFrame(frame);
 }
 
 }  // namespace dvr
diff --git a/services/vr/vr_window_manager/composer/impl/vr_composer_view.h b/services/vr/vr_window_manager/composer/impl/vr_composer_view.h
index 5a938e9..8c5ee1f 100644
--- a/services/vr/vr_window_manager/composer/impl/vr_composer_view.h
+++ b/services/vr/vr_window_manager/composer/impl/vr_composer_view.h
@@ -13,7 +13,7 @@
   class Callback {
    public:
     virtual ~Callback() = default;
-    virtual void OnNewFrame(const ComposerView::Frame& frame) = 0;
+    virtual base::unique_fd OnNewFrame(const ComposerView::Frame& frame) = 0;
   };
 
   VrComposerView(std::unique_ptr<Callback> callback);
@@ -21,10 +21,8 @@
 
   void Initialize(ComposerView* composer_view);
 
-  void ReleaseFrame();
-
   // ComposerView::Observer
-  void OnNewFrame(const ComposerView::Frame& frame) override;
+  base::unique_fd OnNewFrame(const ComposerView::Frame& frame) override;
 
  private:
   ComposerView* composer_view_;
diff --git a/services/vr/vr_window_manager/composer/impl/vr_hwc.cpp b/services/vr/vr_window_manager/composer/impl/vr_hwc.cpp
index 264ee1c..6a78c98 100644
--- a/services/vr/vr_window_manager/composer/impl/vr_hwc.cpp
+++ b/services/vr/vr_window_manager/composer/impl/vr_hwc.cpp
@@ -21,7 +21,6 @@
 
 #include <mutex>
 
-#include "sync_timeline.h"
 #include "vr_composer_client.h"
 
 using namespace android::hardware::graphics::common::V1_0;
@@ -86,8 +85,6 @@
 
 HwcDisplay::~HwcDisplay() {}
 
-bool HwcDisplay::Initialize() { return hwc_timeline_.Initialize(); }
-
 bool HwcDisplay::SetClientTarget(const native_handle_t* handle,
                                  base::unique_fd fence) {
   if (handle)
@@ -105,14 +102,14 @@
 
 HwcLayer* HwcDisplay::GetLayer(Layer id) {
   for (size_t i = 0; i < layers_.size(); ++i)
-    if (layers_[i].id == id) return &layers_[i];
+    if (layers_[i].info.id == id) return &layers_[i];
 
   return nullptr;
 }
 
 bool HwcDisplay::DestroyLayer(Layer id) {
   for (auto it = layers_.begin(); it != layers_.end(); ++it) {
-    if (it->id == id) {
+    if (it->info.id == id) {
       layers_.erase(it);
       return true;
     }
@@ -148,7 +145,7 @@
   for (size_t i = 0; i < layers_.size(); ++i) {
     if (i >= first_client_layer && i <= last_client_layer) {
       if (layers_[i].composition_type != IComposerClient::Composition::CLIENT) {
-        layer_ids->push_back(layers_[i].id);
+        layer_ids->push_back(layers_[i].info.id);
         types->push_back(IComposerClient::Composition::CLIENT);
         layers_[i].composition_type = IComposerClient::Composition::CLIENT;
       }
@@ -157,7 +154,7 @@
     }
 
     if (layers_[i].composition_type != IComposerClient::Composition::DEVICE) {
-      layer_ids->push_back(layers_[i].id);
+      layer_ids->push_back(layers_[i].info.id);
       types->push_back(IComposerClient::Composition::DEVICE);
       layers_[i].composition_type = IComposerClient::Composition::DEVICE;
     }
@@ -205,26 +202,18 @@
     return Error::BAD_LAYER;
   }
 
-  // Increment the time the fence is signalled every time we get the
-  // presentation frame. This ensures that calling ReleaseFrame() only affects
-  // the current frame.
-  fence_time_++;
   out_frames->swap(frame);
   return Error::NONE;
 }
 
-void HwcDisplay::GetReleaseFences(int* present_fence,
-                                  std::vector<Layer>* layer_ids,
-                                  std::vector<int>* fences) {
-  *present_fence = hwc_timeline_.CreateFence(fence_time_);
-  for (const auto& layer : layers_) {
-    layer_ids->push_back(layer.id);
-    fences->push_back(hwc_timeline_.CreateFence(fence_time_));
-  }
-}
+std::vector<Layer> HwcDisplay::UpdateLastFrameAndGetLastFrameLayers() {
+  std::vector<Layer> last_frame_layers;
+  last_frame_layers.swap(last_frame_layers_ids_);
 
-void HwcDisplay::ReleaseFrame() {
-  hwc_timeline_.IncrementTimeline();
+  for (const auto& layer : layers_)
+    last_frame_layers_ids_.push_back(layer.info.id);
+
+  return last_frame_layers;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -234,8 +223,6 @@
 
 VrHwc::~VrHwc() {}
 
-bool VrHwc::Initialize() { return display_.Initialize(); }
-
 bool VrHwc::hasCapability(Capability capability) const { return false; }
 
 void VrHwc::removeClient() {
@@ -270,7 +257,7 @@
   std::lock_guard<std::mutex> guard(mutex_);
 
   HwcLayer* layer = display_.CreateLayer();
-  *outLayer = layer->id;
+  *outLayer = layer->info.id;
   return Error::NONE;
 }
 
@@ -456,24 +443,33 @@
                             std::vector<Layer>* outLayers,
                             std::vector<int32_t>* outReleaseFences) {
   *outPresentFence = -1;
+  outLayers->clear();
+  outReleaseFences->clear();
+
   if (display != kDefaultDisplayId) {
     return Error::BAD_DISPLAY;
   }
 
   std::vector<ComposerView::ComposerLayer> frame;
-  {
-    std::lock_guard<std::mutex> guard(mutex_);
-    Error status = display_.GetFrame(&frame);
-    if (status != Error::NONE)
-      return status;
+  std::vector<Layer> last_frame_layers;
+  std::lock_guard<std::mutex> guard(mutex_);
+  Error status = display_.GetFrame(&frame);
+  if (status != Error::NONE)
+    return status;
 
-    display_.GetReleaseFences(outPresentFence, outLayers, outReleaseFences);
-  }
+  last_frame_layers = display_.UpdateLastFrameAndGetLastFrameLayers();
 
+  base::unique_fd fence;
   if (observer_)
-    observer_->OnNewFrame(frame);
-  else
-    ReleaseFrame();
+    fence = observer_->OnNewFrame(frame);
+
+  if (fence.get() < 0)
+    return Error::NONE;
+
+  *outPresentFence = dup(fence.get());
+  outLayers->swap(last_frame_layers);
+  for (size_t i = 0; i < outLayers->size(); ++i)
+    outReleaseFences->push_back(dup(fence.get()));
 
   return Error::NONE;
 }
@@ -669,11 +665,6 @@
     observer_ = nullptr;
 }
 
-void VrHwc::ReleaseFrame() {
-  std::lock_guard<std::mutex> guard(mutex_);
-  display_.ReleaseFrame();
-}
-
 ComposerView* GetComposerViewFromIComposer(
     hardware::graphics::composer::V2_1::IComposer* composer) {
   return static_cast<VrHwc*>(composer);
diff --git a/services/vr/vr_window_manager/composer/impl/vr_hwc.h b/services/vr/vr_window_manager/composer/impl/vr_hwc.h
index 9450097..df09687 100644
--- a/services/vr/vr_window_manager/composer/impl/vr_hwc.h
+++ b/services/vr/vr_window_manager/composer/impl/vr_hwc.h
@@ -16,6 +16,7 @@
 #ifndef VR_WINDOW_MANAGER_COMPOSER_IMPL_VR_HWC_H_
 #define VR_WINDOW_MANAGER_COMPOSER_IMPL_VR_HWC_H_
 
+#include <android-base/unique_fd.h>
 #include <android/hardware/graphics/composer/2.1/IComposer.h>
 #include <ComposerBase.h>
 #include <ui/Fence.h>
@@ -24,8 +25,6 @@
 
 #include <mutex>
 
-#include "sync_timeline.h"
-
 using namespace android::hardware::graphics::common::V1_0;
 using namespace android::hardware::graphics::composer::V2_1;
 
@@ -57,6 +56,7 @@
 
     // TODO(dnicoara): Add all layer properties. For now just the basics to get
     // it going.
+    Layer id;
     sp<GraphicBuffer> buffer;
     sp<Fence> fence;
     Recti display_frame;
@@ -75,25 +75,23 @@
 
     // Returns a list of layers that need to be shown together. Layers are
     // returned in z-order, with the lowest layer first.
-    virtual void OnNewFrame(const Frame& frame) = 0;
+    virtual base::unique_fd OnNewFrame(const Frame& frame) = 0;
   };
 
   virtual ~ComposerView() {}
 
   virtual void RegisterObserver(Observer* observer) = 0;
   virtual void UnregisterObserver(Observer* observer) = 0;
-
-  // Called to release the oldest frame received by the observer.
-  virtual void ReleaseFrame() = 0;
 };
 
 struct HwcLayer {
   using Composition =
       hardware::graphics::composer::V2_1::IComposerClient::Composition;
 
-  HwcLayer(Layer new_id) : id(new_id) {}
+  HwcLayer(Layer new_id) {
+    info.id = new_id;
+  }
 
-  Layer id;
   Composition composition_type;
   uint32_t z_order;
   ComposerView::ComposerLayer info;
@@ -104,8 +102,6 @@
   HwcDisplay();
   ~HwcDisplay();
 
-  bool Initialize();
-
   HwcLayer* CreateLayer();
   bool DestroyLayer(Layer id);
   HwcLayer* GetLayer(Layer id);
@@ -118,10 +114,7 @@
 
   Error GetFrame(std::vector<ComposerView::ComposerLayer>* out_frame);
 
-  void GetReleaseFences(int* present_fence, std::vector<Layer>* layer_ids,
-                        std::vector<int>* fences);
-
-  void ReleaseFrame();
+  std::vector<Layer> UpdateLastFrameAndGetLastFrameLayers();
 
  private:
   // The client target buffer and the associated fence.
@@ -132,19 +125,11 @@
   // List of currently active layers.
   std::vector<HwcLayer> layers_;
 
+  std::vector<Layer> last_frame_layers_ids_;
+
   // Layer ID generator.
   uint64_t layer_ids_ = 1;
 
-  // Creates software sync fences used to signal releasing frames.
-  SyncTimeline hwc_timeline_;
-
-  // Keeps track of the current fence time. Used in conjunction with
-  // |hwc_timeline_| to properly signal frame release times. Allows the observer
-  // to receive multiple presentation frames without calling ReleaseFrame() in
-  // between each presentation. When the observer is ready to release a frame
-  // only the oldest presentation frame is affected by the release.
-  int fence_time_ = 0;
-
   HwcDisplay(const HwcDisplay&) = delete;
   void operator=(const HwcDisplay&) = delete;
 };
@@ -154,8 +139,6 @@
   VrHwc();
   ~VrHwc() override;
 
-  bool Initialize();
-
   bool hasCapability(Capability capability) const;
 
   Error setLayerInfo(Display display, Layer layer, uint32_t type,
@@ -246,7 +229,6 @@
   // ComposerView:
   void RegisterObserver(Observer* observer) override;
   void UnregisterObserver(Observer* observer) override;
-  void ReleaseFrame() override;
 
  private:
   wp<VrComposerClient> client_;
diff --git a/services/vr/vr_window_manager/hwc_callback.cpp b/services/vr/vr_window_manager/hwc_callback.cpp
index d3cd38c..05ec64a 100644
--- a/services/vr/vr_window_manager/hwc_callback.cpp
+++ b/services/vr/vr_window_manager/hwc_callback.cpp
@@ -38,7 +38,7 @@
 HwcCallback::~HwcCallback() {
 }
 
-void HwcCallback::OnNewFrame(const ComposerView::Frame& frame) {
+base::unique_fd HwcCallback::OnNewFrame(const ComposerView::Frame& frame) {
   std::vector<HwcLayer> hwc_frame(frame.size());
   for (size_t i = 0; i < frame.size(); ++i) {
     hwc_frame[i] = HwcLayer{
@@ -53,7 +53,8 @@
     };
   }
 
-  client_->OnFrame(std::make_unique<Frame>(std::move(hwc_frame)));
+  return client_->OnFrame(
+      std::make_unique<Frame>(std::move(hwc_frame)));
 }
 
 HwcCallback::Frame::Frame(std::vector<HwcLayer>&& layers)
diff --git a/services/vr/vr_window_manager/hwc_callback.h b/services/vr/vr_window_manager/hwc_callback.h
index d4d6e66..be56856 100644
--- a/services/vr/vr_window_manager/hwc_callback.h
+++ b/services/vr/vr_window_manager/hwc_callback.h
@@ -6,6 +6,7 @@
 #include <mutex>
 #include <vector>
 
+#include <android-base/unique_fd.h>
 #include <impl/vr_composer_view.h>
 #include <impl/vr_hwc.h>
 
@@ -24,7 +25,8 @@
   struct HwcLayer {
     enum LayerType : uint32_t {
       // These are from frameworks/base/core/java/android/view/WindowManager.java
-      kUndefinedWindow = 0,
+      kSurfaceFlingerLayer = 0,
+      kUndefinedWindow = ~0U,
       kFirstApplicationWindow = 1,
       kLastApplicationWindow = 99,
       kFirstSubWindow = 1000,
@@ -41,6 +43,19 @@
         // Always skip the following layer types
       case kNavigationBar:
       case kStatusBar:
+      case kSurfaceFlingerLayer:
+      case kUndefinedWindow:
+        return true;
+      default:
+        return false;
+      }
+    }
+
+    // This is a layer that provides some other functionality, eg dim layer.
+    // We use this to determine the point at which layers are "on top".
+    bool is_extra_layer() const {
+      switch(type) {
+      case kSurfaceFlingerLayer:
       case kUndefinedWindow:
         return true;
       default:
@@ -79,14 +94,15 @@
   class Client {
    public:
     virtual ~Client() {}
-    virtual void OnFrame(std::unique_ptr<Frame>) = 0;
+    virtual base::unique_fd OnFrame(std::unique_ptr<Frame>) = 0;
   };
 
   explicit HwcCallback(Client* client);
   ~HwcCallback() override;
 
  private:
-  void OnNewFrame(const ComposerView::Frame& frame) override;
+  base::unique_fd OnNewFrame(const ComposerView::Frame& frame) override;
+
   Client *client_;
 
   HwcCallback(const HwcCallback&) = delete;
diff --git a/services/vr/vr_window_manager/shell_view.cpp b/services/vr/vr_window_manager/shell_view.cpp
index 84b8467..7321ed0 100644
--- a/services/vr/vr_window_manager/shell_view.cpp
+++ b/services/vr/vr_window_manager/shell_view.cpp
@@ -195,7 +195,8 @@
                                             uint32_t vr_app) {
   auto& layers = frame.layers();
 
-  // We assume the first two layers are the VR app.
+  // We assume the first two layers are the VR app. In the case of a 2D app,
+  // there will be the app + at least one system layer so this is still safe.
   if (layers.size() < kVRAppLayerCount)
     return ViewMode::Hidden;
 
@@ -203,19 +204,23 @@
       layers[1].appid != layers[0].appid) {
     if (layers[1].appid != layers[0].appid && layers[0].appid) {
       // This might be a 2D app.
+      // If a dim layer exists afterwards it is much more likely that this is
+      // actually an app launch artifact.
+      for (size_t i = 2; i < layers.size(); i++) {
+        if (layers[i].is_extra_layer())
+          return ViewMode::Hidden;
+      }
       return ViewMode::App;
     }
     return ViewMode::Hidden;
   }
 
-  // If a non-VR-app, non-skipped layer appears, show.
   size_t index = kVRAppLayerCount;
   // Now, find a dim layer if it exists.
   // If it does, ignore any layers behind it for visibility determination.
   for (size_t i = index; i < layers.size(); i++) {
-    if (layers[i].appid == 0) {
+    if (layers[i].appid == HwcCallback::HwcLayer::kSurfaceFlingerLayer) {
       index = i + 1;
-      break;
     }
   }
 
@@ -319,10 +324,6 @@
         frame.frame->Finish() == HwcCallback::FrameStatus::kFinished) {
       current_frame_ = std::move(frame);
       pending_frames_.pop_front();
-
-      for(int i = 0; i < skipped_frame_count_ + 1; i++)
-        surface_flinger_view_->ReleaseFrame();
-      skipped_frame_count_ = 0;
     }
   }
 }
@@ -392,7 +393,7 @@
   return true;
 }
 
-void ShellView::OnFrame(std::unique_ptr<HwcCallback::Frame> frame) {
+base::unique_fd ShellView::OnFrame(std::unique_ptr<HwcCallback::Frame> frame) {
   ViewMode visibility =
       CalculateVisibilityFromLayerConfig(*frame.get(), current_vr_app_);
 
@@ -409,7 +410,6 @@
   pending_frames_.emplace_back(std::move(frame), visibility);
 
   if (pending_frames_.size() > kMaximumPendingFrames) {
-    skipped_frame_count_++;
     pending_frames_.pop_front();
   }
 
@@ -424,9 +424,10 @@
   // so give it a kick.
   if (visibility != ViewMode::Hidden &&
       current_frame_.visibility == ViewMode::Hidden) {
-    QueueTask(MainThreadTask::EnteringVrMode);
     QueueTask(MainThreadTask::Show);
   }
+
+  return base::unique_fd(dup(release_fence_.get()));
 }
 
 bool ShellView::IsHit(const vec3& view_location, const vec3& view_direction,
@@ -518,6 +519,20 @@
 
     DrawIme();
   }
+
+  EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+  EGLSyncKHR sync = eglCreateSyncKHR(display, EGL_SYNC_NATIVE_FENCE_ANDROID,
+                                     nullptr);
+  if (sync != EGL_NO_SYNC_KHR) {
+    // Need to flush in order to get the fence FD.
+    glFlush();
+    base::unique_fd fence(eglDupNativeFenceFDANDROID(display, sync));
+    eglDestroySyncKHR(display, sync);
+    UpdateReleaseFence(std::move(fence));
+  } else {
+    ALOGE("Failed to create sync fence");
+    UpdateReleaseFence(base::unique_fd());
+  }
 }
 
 void ShellView::DrawIme() {
@@ -688,10 +703,7 @@
 }
 
 bool ShellView::InitializeTouch() {
-  virtual_touchpad_ =
-      android::interface_cast<android::dvr::IVirtualTouchpadService>(
-          android::defaultServiceManager()->getService(
-              android::String16("virtual_touchpad")));
+  virtual_touchpad_ = VirtualTouchpadClient::Create();
   if (!virtual_touchpad_.get()) {
     ALOGE("Failed to connect to virtual touchpad");
     return false;
@@ -708,12 +720,12 @@
     }
   }
 
-  const android::binder::Status status = virtual_touchpad_->touch(
+  const android::status_t status = virtual_touchpad_->Touch(
       hit_location_in_window_coord_.x() / size_.x(),
       hit_location_in_window_coord_.y() / size_.y(),
       is_touching_ ? 1.0f : 0.0f);
-  if (!status.isOk()) {
-    ALOGE("touch failed: %s", status.toString8().string());
+  if (status != OK) {
+    ALOGE("touch failed: %d", status);
   }
 }
 
@@ -735,14 +747,18 @@
     return false;
   }
 
-  const android::binder::Status status =
-      virtual_touchpad_->buttonState(touchpad_buttons_);
-  if (!status.isOk()) {
-    ALOGE("touchpad button failed: %d %s", touchpad_buttons_,
-          status.toString8().string());
+  const android::status_t status =
+      virtual_touchpad_->ButtonState(touchpad_buttons_);
+  if (status != OK) {
+    ALOGE("touchpad button failed: %d %d", touchpad_buttons_, status);
   }
   return true;
 }
 
+void ShellView::UpdateReleaseFence(base::unique_fd fence) {
+  std::lock_guard<std::mutex> guard(pending_frame_mutex_);
+  release_fence_ = std::move(fence);
+}
+
 }  // namespace dvr
 }  // namespace android
diff --git a/services/vr/vr_window_manager/shell_view.h b/services/vr/vr_window_manager/shell_view.h
index 39b5451..c477669 100644
--- a/services/vr/vr_window_manager/shell_view.h
+++ b/services/vr/vr_window_manager/shell_view.h
@@ -3,10 +3,10 @@
 
 #include <private/dvr/graphics/mesh.h>
 #include <private/dvr/graphics/shader_program.h>
-#include <android/dvr/IVirtualTouchpadService.h>
 
 #include <deque>
 
+#include "VirtualTouchpadClient.h"
 #include "application.h"
 #include "reticle.h"
 #include "shell_view_binder_interface.h"
@@ -69,16 +69,15 @@
 
   void AdvanceFrame();
 
+  void UpdateReleaseFence(base::unique_fd fence);
+
   // HwcCallback::Client:
-  void OnFrame(std::unique_ptr<HwcCallback::Frame> frame) override;
+  base::unique_fd OnFrame(std::unique_ptr<HwcCallback::Frame> frame) override;
 
   std::unique_ptr<ShaderProgram> program_;
   std::unique_ptr<ShaderProgram> overlay_program_;
   std::unique_ptr<ShaderProgram> controller_program_;
 
-  // This starts at -1 so we don't call ReleaseFrame for the first frame.
-  int skipped_frame_count_ = -1;
-
   uint32_t current_vr_app_;
 
   // Used to center the scene when the shell becomes visible.
@@ -91,7 +90,7 @@
 
   std::unique_ptr<SurfaceFlingerView> surface_flinger_view_;
   std::unique_ptr<Reticle> reticle_;
-  sp<IVirtualTouchpadService> virtual_touchpad_;
+  sp<VirtualTouchpad> virtual_touchpad_;
   std::vector<TextureLayer> textures_;
   TextureLayer ime_texture_;
 
@@ -126,6 +125,8 @@
 
   mat4 controller_translate_;
 
+  base::unique_fd release_fence_;
+
   ShellView(const ShellView&) = delete;
   void operator=(const ShellView&) = delete;
 };
diff --git a/services/vr/vr_window_manager/surface_flinger_view.cpp b/services/vr/vr_window_manager/surface_flinger_view.cpp
index d42d3ff..63bc143 100644
--- a/services/vr/vr_window_manager/surface_flinger_view.cpp
+++ b/services/vr/vr_window_manager/surface_flinger_view.cpp
@@ -84,9 +84,5 @@
   return true;
 }
 
-void SurfaceFlingerView::ReleaseFrame() {
-  vr_composer_view_->ReleaseFrame();
-}
-
 }  // namespace dvr
 }  // namespace android
diff --git a/services/vr/vr_window_manager/surface_flinger_view.h b/services/vr/vr_window_manager/surface_flinger_view.h
index 9c16192..7370299 100644
--- a/services/vr/vr_window_manager/surface_flinger_view.h
+++ b/services/vr/vr_window_manager/surface_flinger_view.h
@@ -36,8 +36,6 @@
                    TextureLayer* ime_layer, bool debug,
                    bool skip_first_layer) const;
 
-  void ReleaseFrame();
-
  private:
   sp<IComposer> vr_hwcomposer_;
   std::unique_ptr<VrComposerView> vr_composer_view_;
diff --git a/vulkan/api/platform.api b/vulkan/api/platform.api
index fb8e3ce..b82cbb4 100644
--- a/vulkan/api/platform.api
+++ b/vulkan/api/platform.api
@@ -49,4 +49,5 @@
 @internal type void* HINSTANCE
 @internal type void* HWND
 @internal type void* HANDLE
+@internal type u32   DWORD
 @internal class SECURITY_ATTRIBUTES {}
diff --git a/vulkan/api/vulkan.api b/vulkan/api/vulkan.api
index eed44ad..cfeeeef 100644
--- a/vulkan/api/vulkan.api
+++ b/vulkan/api/vulkan.api
@@ -45,118 +45,154 @@
 // API keyword, but needs special handling by some templates
 define NULL_HANDLE 0
 
+// 1
 @extension("VK_KHR_surface") define VK_KHR_SURFACE_SPEC_VERSION                 25
 @extension("VK_KHR_surface") define VK_KHR_SURFACE_EXTENSION_NAME               "VK_KHR_surface"
 
+// 2
 @extension("VK_KHR_swapchain") define VK_KHR_SWAPCHAIN_SPEC_VERSION             68
 @extension("VK_KHR_swapchain") define VK_KHR_SWAPCHAIN_EXTENSION_NAME           "VK_KHR_swapchain"
 
+// 3
 @extension("VK_KHR_display") define VK_KHR_DISPLAY_SPEC_VERSION                 21
 @extension("VK_KHR_display") define VK_KHR_DISPLAY_EXTENSION_NAME               "VK_KHR_display"
 
+// 4
 @extension("VK_KHR_display_swapchain") define VK_KHR_DISPLAY_SWAPCHAIN_SPEC_VERSION     9
 @extension("VK_KHR_display_swapchain") define VK_KHR_DISPLAY_SWAPCHAIN_EXTENSION_NAME   "VK_KHR_display_swapchain"
 
+// 5
 @extension("VK_KHR_xlib_surface") define VK_KHR_XLIB_SURFACE_SPEC_VERSION       6
 @extension("VK_KHR_xlib_surface") define VK_KHR_XLIB_SURFACE_NAME               "VK_KHR_xlib_surface"
 
+// 6
 @extension("VK_KHR_xcb_surface") define VK_KHR_XCB_SURFACE_SPEC_VERSION         6
 @extension("VK_KHR_xcb_surface") define VK_KHR_XCB_SURFACE_NAME                 "VK_KHR_xcb_surface"
 
+// 7
 @extension("VK_KHR_wayland_surface") define VK_KHR_WAYLAND_SURFACE_SPEC_VERSION 5
 @extension("VK_KHR_wayland_surface") define VK_KHR_WAYLAND_SURFACE_NAME         "VK_KHR_wayland_surface"
 
+// 8
 @extension("VK_KHR_mir_surface") define VK_KHR_MIR_SURFACE_SPEC_VERSION         4
 @extension("VK_KHR_mir_surface") define VK_KHR_MIR_SURFACE_NAME                 "VK_KHR_mir_surface"
 
+// 9
 @extension("VK_KHR_android_surface") define VK_KHR_ANDROID_SURFACE_SPEC_VERSION 6
 @extension("VK_KHR_android_surface") define VK_KHR_ANDROID_SURFACE_NAME         "VK_KHR_android_surface"
 
+// 10
 @extension("VK_KHR_win32_surface") define VK_KHR_WIN32_SURFACE_SPEC_VERSION     5
 @extension("VK_KHR_win32_surface") define VK_KHR_WIN32_SURFACE_NAME             "VK_KHR_win32_surface"
 
-@extension("VK_KHR_incremental_present") define VK_KHR_INCREMENTAL_PRESENT_SPEC_VERSION 1
-@extension("VK_KHR_incremental_present") define VK_KHR_INCREMENTAL_PRESENT_NAME         "VK_KHR_incremental_present"
-
-@extension("VK_ANDROID_native_buffer") define VK_ANDROID_NATIVE_BUFFER_SPEC_VERSION     6
+// 11
+@extension("VK_ANDROID_native_buffer") define VK_ANDROID_NATIVE_BUFFER_SPEC_VERSION     7
 @extension("VK_ANDROID_native_buffer") define VK_ANDROID_NATIVE_BUFFER_NAME             "VK_ANDROID_native_buffer"
 
-@extension("VK_GOOGLE_display_timing") define VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION     1
-@extension("VK_GOOGLE_display_timing") define VK_GOOGLE_DISPLAY_TIMING_NAME             "VK_GOOGLE_display_timing"
-
+// 12
 @extension("VK_EXT_debug_report") define VK_EXT_DEBUG_REPORT_SPEC_VERSION       4
 @extension("VK_EXT_debug_report") define VK_EXT_DEBUG_REPORT_NAME               "VK_EXT_debug_report"
 
+// 13
 @extension("VK_NV_glsl_shader") define VK_NV_GLSL_SHADER_SPEC_VERSION           1
 @extension("VK_NV_glsl_shader") define VK_NV_GLSL_SHADER_NAME                   "VK_NV_glsl_shader"
 
+// 15
 @extension("VK_KHR_sampler_mirror_clamp_to_edge") define VK_KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE_SPEC_VERSION   1
 @extension("VK_KHR_sampler_mirror_clamp_to_edge") define VK_KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE_NAME           "VK_KHR_sampler_mirror_clamp_to_edge"
 
+// 16
 @extension("VK_IMG_filter_cubic") define VK_IMG_FILTER_CUBIC_SPEC_VERSION       1
 @extension("VK_IMG_filter_cubic") define VK_IMG_FILTER_CUBIC_NAME               "VK_IMG_filter_cubic"
 
+// 19
 @extension("VK_AMD_rasterization_order") define VK_AMD_RASTERIZATION_ORDER_SPEC_VERSION   1
 @extension("VK_AMD_rasterization_order") define VK_AMD_RASTERIZATION_ORDER_NAME           "VK_AMD_rasterization_order"
 
+// 21
 @extension("VK_AMD_shader_trinary_minmax") define VK_AMD_SHADER_TRINARY_MINMAX_SPEC_VERSION 1
 @extension("VK_AMD_shader_trinary_minmax") define VK_AMD_SHADER_TRINARY_MINMAX_EXTENSION_NAME "VK_AMD_shader_trinary_minmax"
 
+// 22
 @extension("VK_AMD_shader_explicit_vertex_parameter") define VK_AMD_SHADER_EXPLICIT_VERTEX_PARAMETER_SPEC_VERSION 1
 @extension("VK_AMD_shader_explicit_vertex_parameter") define VK_AMD_SHADER_EXPLICIT_VERTEX_PARAMETER_EXTENSION_NAME "VK_AMD_shader_explicit_vertex_parameter"
 
+// 23
 @extension("VK_EXT_debug_marker") define VK_EXT_DEBUG_MARKER_SPEC_VERSION       3
 @extension("VK_EXT_debug_marker") define VK_EXT_DEBUG_MARKER_NAME               "VK_EXT_debug_marker"
 
+// 26
 @extension("VK_AMD_gcn_shader") define VK_AMD_GCN_SHADER_SPEC_VERSION 1
 @extension("VK_AMD_gcn_shader") define VK_AMD_GCN_SHADER_EXTENSION_NAME "VK_AMD_gcn_shader"
 
+// 27
 @extension("VK_NV_dedicated_allocation") define VK_NV_DEDICATED_ALLOCATION_SPEC_VERSION 1
 @extension("VK_NV_dedicated_allocation") define VK_NV_DEDICATED_ALLOCATION_EXTENSION_NAME "VK_NV_dedicated_allocation"
 
-@extension("VK_KHR_get_physical_device_properties2") define VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_SPEC_VERSION 1
-@extension("VK_KHR_get_physical_device_properties2") define VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME "VK_KHR_get_physical_device_properties2"
-
-@extension("VK_AMD_draw_indirect_count") define VK_AMD_DRAW_INDIRECT_COUNT_SPEC_VERSION 1
-@extension("VK_AMD_draw_indirect_count") define VK_AMD_DRAW_INDIRECT_COUNT_EXTENSION_NAME "VK_AMD_draw_indirect_count"
-
-@extension("VK_AMD_negative_viewport_height") define VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_SPEC_VERSION 1
-@extension("VK_AMD_negative_viewport_height") define VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_EXTENSION_NAME "VK_AMD_negative_viewport_height"
-
-@extension("VK_AMD_gpu_shader_half_float") define VK_AMD_GPU_SHADER_HALF_FLOAT_SPEC_VERSION 1
-@extension("VK_AMD_gpu_shader_half_float") define VK_AMD_GPU_SHADER_HALF_FLOAT_EXTENSION_NAME "VK_AMD_gpu_shader_half_float"
-
-@extension("VK_AMD_shader_ballot") define VK_AMD_SHADER_BALLOT_SPEC_VERSION 1
-@extension("VK_AMD_shader_ballot") define VK_AMD_SHADER_BALLOT_EXTENSION_NAME "VK_AMD_shader_ballot"
-
+// 28
 @extension("VK_IMG_format_pvrtc") define VK_IMG_FORMAT_PVRTC_SPEC_VERSION 1
 @extension("VK_IMG_format_pvrtc") define VK_IMG_FORMAT_PVRTC_EXTENSION_NAME "VK_IMG_format_pvrtc"
 
+// 34
+@extension("VK_AMD_draw_indirect_count") define VK_AMD_DRAW_INDIRECT_COUNT_SPEC_VERSION 1
+@extension("VK_AMD_draw_indirect_count") define VK_AMD_DRAW_INDIRECT_COUNT_EXTENSION_NAME "VK_AMD_draw_indirect_count"
+
+// 36
+@extension("VK_AMD_negative_viewport_height") define VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_SPEC_VERSION 1
+@extension("VK_AMD_negative_viewport_height") define VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_EXTENSION_NAME "VK_AMD_negative_viewport_height"
+
+// 37
+@extension("VK_AMD_gpu_shader_half_float") define VK_AMD_GPU_SHADER_HALF_FLOAT_SPEC_VERSION 1
+@extension("VK_AMD_gpu_shader_half_float") define VK_AMD_GPU_SHADER_HALF_FLOAT_EXTENSION_NAME "VK_AMD_gpu_shader_half_float"
+
+// 38
+@extension("VK_AMD_shader_ballot") define VK_AMD_SHADER_BALLOT_SPEC_VERSION 1
+@extension("VK_AMD_shader_ballot") define VK_AMD_SHADER_BALLOT_EXTENSION_NAME "VK_AMD_shader_ballot"
+
+// 56
 @extension("VK_NV_external_memory_capabilities") define VK_NV_EXTERNAL_MEMORY_CAPABILITIES_SPEC_VERSION 1
 @extension("VK_NV_external_memory_capabilities") define VK_NV_EXTERNAL_MEMORY_CAPABILITIES_EXTENSION_NAME "VK_NV_external_memory_capabilities"
 
+// 57
 @extension("VK_NV_external_memory") define VK_NV_EXTERNAL_MEMORY_SPEC_VERSION 1
 @extension("VK_NV_external_memory") define VK_NV_EXTERNAL_MEMORY_EXTENSION_NAME "VK_NV_external_memory"
 
+// 58
 @extension("VK_NV_external_memory_win32") define VK_NV_EXTERNAL_MEMORY_WIN32_SPEC_VERSION 1
 @extension("VK_NV_external_memory_win32") define VK_NV_EXTERNAL_MEMORY_WIN32_EXTENSION_NAME "VK_NV_external_memory_win32"
 
+// 59
 @extension("VK_NV_win32_keyed_mutex") define VK_NV_WIN32_KEYED_MUTEX_SPEC_VERSION 1
 @extension("VK_NV_win32_keyed_mutex") define VK_NV_WIN32_KEYED_MUTEX_EXTENSION_NAME "VK_NV_win32_keyed_mutex"
 
+// 60
+@extension("VK_KHR_get_physical_device_properties2") define VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_SPEC_VERSION 1
+@extension("VK_KHR_get_physical_device_properties2") define VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME "VK_KHR_get_physical_device_properties2"
+
+// 62
 @extension("VK_EXT_validation_flags") define VK_EXT_VALIDATION_FLAGS_SPEC_VERSION 1
 @extension("VK_EXT_validation_flags") define VK_EXT_VALIDATION_FLAGS_EXTENSION_NAME "VK_EXT_validation_flags"
 
+// 85
+@extension("VK_KHR_incremental_present") define VK_KHR_INCREMENTAL_PRESENT_SPEC_VERSION 1
+@extension("VK_KHR_incremental_present") define VK_KHR_INCREMENTAL_PRESENT_NAME "VK_KHR_incremental_present"
+
+// 87
 @extension("VK_NVX_device_generated_commands") define VK_NVX_DEVICE_GENERATED_COMMANDS_SPEC_VERSION 1
 @extension("VK_NVX_device_generated_commands") define VK_NVX_DEVICE_GENERATED_COMMANDS_EXTENSION_NAME "VK_NVX_device_generated_commands"
 
+// 93
+@extension("VK_GOOGLE_display_timing") define VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION 1
+@extension("VK_GOOGLE_display_timing") define VK_GOOGLE_DISPLAY_TIMING_NAME "VK_GOOGLE_display_timing"
+
+// 106
+@extension("VK_EXT_hdr_metadata") define VK_EXT_HDR_METADATA_SPEC_VERSION 1
+@extension("VK_EXT_hdr_metadata") define VK_EXT_HDR_METADATA_EXTENSION_NAME "VK_EXT_hdr_metadata"
+
+// 112
 @extension("VK_KHR_shared_presentable_image") define VK_KHR_SHARED_PRESENTABLE_IMAGE_SPEC_VERSION 1
 @extension("VK_KHR_shared_presentable_image") define VK_KHR_SHARED_PRESENTABLE_IMAGE_EXTENSION_NAME "VK_KHR_shared_presentable_image"
 
-@extension("VK_EXT_HDR_METADATA_SPEC_VERSION") define VK_EXT_HDR_METADATA_SPEC_VERSION 1
-@extension("VK_EXT_HDR_METADATA_EXTENSION_NAME") define VK_EXT_HDR_METADATA_EXTENSION_NAME "VK_EXT_hdr_metadata"
-
-
 /////////////
 //  Types  //
 /////////////
@@ -652,28 +688,14 @@
     VK_FORMAT_ASTC_12x12_SRGB_BLOCK                         = 184,
 
     //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG = 1000054000,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG = 1000054001,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG = 1000054002,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG = 1000054003,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG = 1000054004,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG = 1000054005,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG = 1000054006,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG = 1000054007,
+    VK_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG                   = 1000054000,
+    VK_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG                   = 1000054001,
+    VK_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG                   = 1000054002,
+    VK_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG                   = 1000054003,
+    VK_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG                    = 1000054004,
+    VK_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG                    = 1000054005,
+    VK_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG                    = 1000054006,
+    VK_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG                    = 1000054007,
 }
 
 /// Structure type enumerant
@@ -763,6 +785,7 @@
     //@extension("VK_ANDROID_native_buffer")
     VK_STRUCTURE_TYPE_NATIVE_BUFFER_ANDROID                     = 1000010000,
     VK_STRUCTURE_TYPE_SWAPCHAIN_IMAGE_CREATE_INFO_ANDROID       = 1000010001,
+    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENTATION_PROPERTIES_ANDROID = 1000010002,
 
     //@extension("VK_GOOGLE_display_timing")
     VK_STRUCTURE_TYPE_PRESENT_TIMES_INFO_GOOGLE                 = 1000092000,
@@ -775,87 +798,49 @@
 
     //@extension("VK_EXT_debug_marker")
     VK_STRUCTURE_TYPE_DEBUG_MARKER_OBJECT_NAME_INFO_EXT         = 1000022000,
-
-    //@extension("VK_EXT_debug_marker")
     VK_STRUCTURE_TYPE_DEBUG_MARKER_OBJECT_TAG_INFO_EXT          = 1000022001,
-
-    //@extension("VK_EXT_debug_marker")
     VK_STRUCTURE_TYPE_DEBUG_MARKER_MARKER_INFO_EXT              = 1000022002,
 
     //@extension("VK_NV_dedicated_allocation")
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_IMAGE_CREATE_INFO_NV = 1000026000,
-
-    //@extension("VK_NV_dedicated_allocation")
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_BUFFER_CREATE_INFO_NV = 1000026001,
-
-    //@extension("VK_NV_dedicated_allocation")
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_MEMORY_ALLOCATE_INFO_NV = 1000026002,
 
     //@extension("VK_NV_external_memory")
-    VK_STRUCTURE_TYPE_EXTERNAL_MEMORY_IMAGE_CREATE_INFO_NV = 1000056000,
-
-    //@extension("VK_NV_external_memory")
-    VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO_NV = 1000056001,
+    VK_STRUCTURE_TYPE_EXTERNAL_MEMORY_IMAGE_CREATE_INFO_NV      = 1000056000,
+    VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO_NV            = 1000056001,
 
     //@extension("VK_NV_external_memory_win32")
-    VK_STRUCTURE_TYPE_IMPORT_MEMORY_WIN32_HANDLE_INFO_NV = 1000057000,
-
-    //@extension("VK_NV_external_memory_win32")
-    VK_STRUCTURE_TYPE_EXPORT_MEMORY_WIN32_HANDLE_INFO_NV = 1000057001,
+    VK_STRUCTURE_TYPE_IMPORT_MEMORY_WIN32_HANDLE_INFO_NV        = 1000057000,
+    VK_STRUCTURE_TYPE_EXPORT_MEMORY_WIN32_HANDLE_INFO_NV        = 1000057001,
 
     //@extension("VK_NV_win32_keyed_mutex")
     VK_STRUCTURE_TYPE_WIN32_KEYED_MUTEX_ACQUIRE_RELEASE_INFO_NV = 1000058000,
 
     //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2_KHR = 1000059000,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2_KHR = 1000059001,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_FORMAT_PROPERTIES_2_KHR = 1000059002,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_IMAGE_FORMAT_PROPERTIES_2_KHR = 1000059003,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_FORMAT_INFO_2_KHR = 1000059004,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_QUEUE_FAMILY_PROPERTIES_2_KHR = 1000059005,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_PROPERTIES_2_KHR = 1000059006,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_SPARSE_IMAGE_FORMAT_PROPERTIES_2_KHR = 1000059007,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
+    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2_KHR            = 1000059000,
+    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2_KHR          = 1000059001,
+    VK_STRUCTURE_TYPE_FORMAT_PROPERTIES_2_KHR                   = 1000059002,
+    VK_STRUCTURE_TYPE_IMAGE_FORMAT_PROPERTIES_2_KHR             = 1000059003,
+    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_FORMAT_INFO_2_KHR   = 1000059004,
+    VK_STRUCTURE_TYPE_QUEUE_FAMILY_PROPERTIES_2_KHR             = 1000059005,
+    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_PROPERTIES_2_KHR   = 1000059006,
+    VK_STRUCTURE_TYPE_SPARSE_IMAGE_FORMAT_PROPERTIES_2_KHR      = 1000059007,
     VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SPARSE_IMAGE_FORMAT_INFO_2_KHR = 1000059008,
 
     //@extension("VK_EXT_validation_flags")
-    VK_STRUCTURE_TYPE_VALIDATION_FLAGS_EXT = 1000061000,
+    VK_STRUCTURE_TYPE_VALIDATION_FLAGS_EXT                      = 1000061000,
 
     //@extension("VK_KHR_incremental_present")
-    VK_STRUCTURE_TYPE_PRESENT_REGIONS_KHR = 1000084000,
+    VK_STRUCTURE_TYPE_PRESENT_REGIONS_KHR                       = 1000084000,
 
     //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_OBJECT_TABLE_CREATE_INFO_NVX = 1000086000,
-
-    //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_INDIRECT_COMMANDS_LAYOUT_CREATE_INFO_NVX = 1000086001,
-
-    //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_CMD_PROCESS_COMMANDS_INFO_NVX = 1000086002,
-
-    //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_CMD_RESERVE_SPACE_FOR_COMMANDS_INFO_NVX = 1000086003,
-
-    //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_DEVICE_GENERATED_COMMANDS_LIMITS_NVX = 1000086004,
-
-    //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_DEVICE_GENERATED_COMMANDS_FEATURES_NVX = 1000086005,
+    VK_STRUCTURE_TYPE_OBJECT_TABLE_CREATE_INFO_NVX              = 1000086000,
+    VK_STRUCTURE_TYPE_INDIRECT_COMMANDS_LAYOUT_CREATE_INFO_NVX  = 1000086001,
+    VK_STRUCTURE_TYPE_CMD_PROCESS_COMMANDS_INFO_NVX             = 1000086002,
+    VK_STRUCTURE_TYPE_CMD_RESERVE_SPACE_FOR_COMMANDS_INFO_NVX   = 1000086003,
+    VK_STRUCTURE_TYPE_DEVICE_GENERATED_COMMANDS_LIMITS_NVX      = 1000086004,
+    VK_STRUCTURE_TYPE_DEVICE_GENERATED_COMMANDS_FEATURES_NVX    = 1000086005,
 }
 
 enum VkSubpassContents {
@@ -941,7 +926,7 @@
 @extension("VK_KHR_surface")
 enum VkColorSpaceKHR {
     VK_COLORSPACE_SRGB_NONLINEAR_KHR                        = 0x00000000,
-    VK_COLOR_SPACE_DISPLAY_P3_LINEAR_EXT 	 	    = 1000104001,
+    VK_COLOR_SPACE_DISPLAY_P3_LINEAR_EXT                    = 1000104001,
     VK_COLOR_SPACE_DISPLAY_P3_NONLINEAR_EXT                 = 1000104002,
     VK_COLOR_SPACE_SCRGB_LINEAR_EXT                         = 1000104003,
     VK_COLOR_SPACE_SCRGB_NONLINEAR_EXT                      = 1000104004,
@@ -1011,23 +996,23 @@
 
 @extension("VK_NVX_device_generated_commands")
 enum VkIndirectCommandsTokenTypeNVX {
-    VK_INDIRECT_COMMANDS_TOKEN_PIPELINE_NVX = 0,
-    VK_INDIRECT_COMMANDS_TOKEN_DESCRIPTOR_SET_NVX = 1,
-    VK_INDIRECT_COMMANDS_TOKEN_INDEX_BUFFER_NVX = 2,
-    VK_INDIRECT_COMMANDS_TOKEN_VERTEX_BUFFER_NVX = 3,
-    VK_INDIRECT_COMMANDS_TOKEN_PUSH_CONSTANT_NVX = 4,
-    VK_INDIRECT_COMMANDS_TOKEN_DRAW_INDEXED_NVX = 5,
-    VK_INDIRECT_COMMANDS_TOKEN_DRAW_NVX = 6,
-    VK_INDIRECT_COMMANDS_TOKEN_DISPATCH_NVX = 7,
+    VK_INDIRECT_COMMANDS_TOKEN_PIPELINE_NVX                 = 0,
+    VK_INDIRECT_COMMANDS_TOKEN_DESCRIPTOR_SET_NVX           = 1,
+    VK_INDIRECT_COMMANDS_TOKEN_INDEX_BUFFER_NVX             = 2,
+    VK_INDIRECT_COMMANDS_TOKEN_VERTEX_BUFFER_NVX            = 3,
+    VK_INDIRECT_COMMANDS_TOKEN_PUSH_CONSTANT_NVX            = 4,
+    VK_INDIRECT_COMMANDS_TOKEN_DRAW_INDEXED_NVX             = 5,
+    VK_INDIRECT_COMMANDS_TOKEN_DRAW_NVX                     = 6,
+    VK_INDIRECT_COMMANDS_TOKEN_DISPATCH_NVX                 = 7,
 }
 
 @extension("VK_NVX_device_generated_commands")
 enum VkObjectEntryTypeNVX {
-    VK_OBJECT_ENTRY_DESCRIPTOR_SET_NVX = 0,
-    VK_OBJECT_ENTRY_PIPELINE_NVX = 1,
-    VK_OBJECT_ENTRY_INDEX_BUFFER_NVX = 2,
-    VK_OBJECT_ENTRY_VERTEX_BUFFER_NVX = 3,
-    VK_OBJECT_ENTRY_PUSH_CONSTANT_NVX = 4,
+    VK_OBJECT_ENTRY_DESCRIPTOR_SET_NVX                      = 0,
+    VK_OBJECT_ENTRY_PIPELINE_NVX                            = 1,
+    VK_OBJECT_ENTRY_INDEX_BUFFER_NVX                        = 2,
+    VK_OBJECT_ENTRY_VERTEX_BUFFER_NVX                       = 3,
+    VK_OBJECT_ENTRY_PUSH_CONSTANT_NVX                       = 4,
 }
 
 /////////////////
@@ -1082,8 +1067,6 @@
 
     //@extension("VK_NVX_device_generated_commands")
     VK_ACCESS_COMMAND_PROCESS_READ_BIT_NVX                  = 0x00020000,
-
-    //@extension("VK_NVX_device_generated_commands")
     VK_ACCESS_COMMAND_PROCESS_WRITE_BIT_NVX                 = 0x00040000,
 }
 
@@ -1570,6 +1553,13 @@
 //bitfield VkWin32SurfaceCreateFlagBitsKHR {
 //}
 
+@extension("VK_ANDROID_native_buffer")
+type VkFlags VkSwapchainImageUsageFlagsANDROID
+@extension("VK_ANDROID_native_buffer")
+bitfield VkSwapchainImageUsageFlagBitsANDROID {
+    VK_SWAPCHAIN_IMAGE_USAGE_FLAGS_SHARED_BIT_ANDROID = 0x00000001,
+}
+
 @extension("VK_EXT_debug_report")
 type VkFlags VkDebugReportFlagsEXT
 @extension("VK_EXT_debug_report")
@@ -1581,51 +1571,43 @@
     VK_DEBUG_REPORT_DEBUG_BIT_EXT                           = 0x00000010,
 }
 
-@extension("VK_ANDROID_native_buffer")
-type VkFlags VkSwapchainImageUsageFlagsANDROID
-@extension("VK_ANDROID_native_buffer")
-bitfield VkSwapchainImageUsageFlagBitsANDROID {
-    VK_SWAPCHAIN_IMAGE_USAGE_FLAGS_SHARED_BIT_ANDROID = 0x00000001,
-}
-
 @extension("VK_NV_external_memory_capabilities")
 type VkFlags VkExternalMemoryHandleTypeFlagsNV
 @extension("VK_NV_external_memory_capabilities")
 bitfield VkExternalMemoryHandleTypeFlagBitsNV {
-    VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT_NV = 0x00000001,
-    VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_KMT_BIT_NV = 0x00000002,
-    VK_EXTERNAL_MEMORY_HANDLE_TYPE_D3D11_IMAGE_BIT_NV = 0x00000004,
-    VK_EXTERNAL_MEMORY_HANDLE_TYPE_D3D11_IMAGE_KMT_BIT_NV = 0x00000008,
+    VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT_NV      = 0x00000001,
+    VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_KMT_BIT_NV  = 0x00000002,
+    VK_EXTERNAL_MEMORY_HANDLE_TYPE_D3D11_IMAGE_BIT_NV       = 0x00000004,
+    VK_EXTERNAL_MEMORY_HANDLE_TYPE_D3D11_IMAGE_KMT_BIT_NV   = 0x00000008,
 }
 
 @extension("VK_NV_external_memory_capabilities")
 type VkFlags VkExternalMemoryFeatureFlagsNV
 @extension("VK_NV_external_memory_capabilities")
 bitfield VkExternalMemoryFeatureFlagBitsNV {
-    VK_EXTERNAL_MEMORY_FEATURE_DEDICATED_ONLY_BIT_NV = 0x00000001,
-    VK_EXTERNAL_MEMORY_FEATURE_EXPORTABLE_BIT_NV = 0x00000002,
-    VK_EXTERNAL_MEMORY_FEATURE_IMPORTABLE_BIT_NV = 0x00000004,
+    VK_EXTERNAL_MEMORY_FEATURE_DEDICATED_ONLY_BIT_NV        = 0x00000001,
+    VK_EXTERNAL_MEMORY_FEATURE_EXPORTABLE_BIT_NV            = 0x00000002,
+    VK_EXTERNAL_MEMORY_FEATURE_IMPORTABLE_BIT_NV            = 0x00000004,
 }
 
 @extension("VK_NVX_device_generated_commands")
 type VkFlags VkIndirectCommandsLayoutUsageFlagsNVX
 @extension("VK_NVX_device_generated_commands")
 bitfield VkIndirectCommandsLayoutUsageFlagBitsNVX {
-    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_UNORDERED_SEQUENCES_BIT_NVX = 0x00000001,
-    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_SPARSE_SEQUENCES_BIT_NVX = 0x00000002,
-    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_EMPTY_EXECUTIONS_BIT_NVX = 0x00000004,
-    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_INDEXED_SEQUENCES_BIT_NVX = 0x00000008,
+    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_UNORDERED_SEQUENCES_BIT_NVX   = 0x00000001,
+    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_SPARSE_SEQUENCES_BIT_NVX      = 0x00000002,
+    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_EMPTY_EXECUTIONS_BIT_NVX      = 0x00000004,
+    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_INDEXED_SEQUENCES_BIT_NVX     = 0x00000008,
 }
 
 @extension("VK_NVX_device_generated_commands")
 type VkFlags VkObjectEntryUsageFlagsNVX
 @extension("VK_NVX_device_generated_commands")
 bitfield VkObjectEntryUsageFlagBitsNVX {
-    VK_OBJECT_ENTRY_USAGE_GRAPHICS_BIT_NVX = 0x00000001,
-    VK_OBJECT_ENTRY_USAGE_COMPUTE_BIT_NVX = 0x00000002,
+    VK_OBJECT_ENTRY_USAGE_GRAPHICS_BIT_NVX                  = 0x00000001,
+    VK_OBJECT_ENTRY_USAGE_COMPUTE_BIT_NVX                   = 0x00000002,
 }
 
-
 //////////////////
 //  Structures  //
 //////////////////
@@ -2933,6 +2915,13 @@
     VkSwapchainImageUsageFlagsANDROID           flags
 }
 
+@extension("VK_ANDROID_native_buffer")
+class VkPhysicalDevicePresentationPropertiesANDROID {
+    VkStructureType                             sType
+    void*                                       pNext
+    VkBool32                                    sharedImage
+}
+
 @extension("VK_GOOGLE_display_timing")
 class VkRefreshCycleDurationGOOGLE {
     u64                                         minRefreshDuration
@@ -3028,6 +3017,57 @@
     VkBuffer                                    buffer
 }
 
+@extension("VK_NV_external_memory_capabilities")
+class VkExternalImageFormatPropertiesNV {
+    VkImageFormatProperties                     imageFormatProperties
+    VkExternalMemoryFeatureFlagsNV              externalMemoryFeatures
+    VkExternalMemoryHandleTypeFlagsNV           exportFromImportedHandleTypes
+    VkExternalMemoryHandleTypeFlagsNV           compatibleHandleTypes
+}
+
+@extension("VK_NV_external_memory")
+class VkExternalMemoryImageCreateInfoNV {
+    VkStructureType                             sType
+    const void*                                 pNext
+    VkExternalMemoryHandleTypeFlagsNV           handleTypes
+}
+
+@extension("VK_NV_external_memory")
+class VkExportMemoryAllocateInfoNV {
+    VkStructureType                             sType
+    const void*                                 pNext
+    VkExternalMemoryHandleTypeFlagsNV           handleTypes
+}
+
+@extension("VK_NV_external_memory_win32")
+class VkImportMemoryWin32HandleInfoNV {
+    VkStructureType                             sType
+    const void*                                 pNext
+    VkExternalMemoryHandleTypeFlagsNV           handleType
+    platform.HANDLE                             handle
+}
+
+@extension("VK_NV_external_memory_win32")
+class VkExportMemoryWin32HandleInfoNV {
+    VkStructureType                             sType
+    const void*                                 pNext
+    const platform.SECURITY_ATTRIBUTES*         pAttributes
+    platform.DWORD                              dwAccess
+}
+
+@extension("VK_NV_win32_keyed_mutex")
+class VkWin32KeyedMutexAcquireReleaseInfoNV {
+    VkStructureType                             sType
+    const void*                                 pNext
+    u32                                         acquireCount
+    const VkDeviceMemory*                       pAcquireSyncs
+    const u64*                                  pAcquireKeys
+    const u32*                                  pAcquireTimeoutMilliseconds
+    u32                                         releaseCount
+    const VkDeviceMemory*                       pReleaseSyncs
+    const u64*                                  pReleaseKeys
+}
+
 @extension("VK_KHR_get_physical_device_properties2")
 class VkPhysicalDeviceFeatures2KHR {
     VkStructureType                             sType
@@ -3099,78 +3139,6 @@
     VkImageTiling                               tiling
 }
 
-@extension("VK_KHR_incremental_present")
-class VkRectLayerKHR {
-    VkOffset2D                                  offset
-    VkExtent2D                                  extent
-    u32                                         layer
-}
-
-@extension("VK_KHR_incremental_present")
-class VkPresentRegionKHR {
-    u32                                         rectangleCount
-    const VkRectLayerKHR*                       pRectangles
-}
-
-@extension("VK_KHR_incremental_present")
-class VkPresentRegionsKHR {
-    VkStructureType                             sType
-    const void*                                 pNext
-    u32                                         swapchainCount
-    const VkPresentRegionKHR*                   pRegions
-}
-
-@extension("VK_NV_external_memory_capabilities")
-class VkExternalImageFormatPropertiesNV {
-    VkImageFormatProperties                     imageFormatProperties
-    VkExternalMemoryFeatureFlagsNV              externalMemoryFeatures
-    VkExternalMemoryHandleTypeFlagsNV           exportFromImportedHandleTypes
-    VkExternalMemoryHandleTypeFlagsNV           compatibleHandleTypes
-}
-
-@extension("VK_NV_external_memory")
-class VkExternalMemoryImageCreateInfoNV {
-    VkStructureType                             sType
-    const void*                                 pNext
-    VkExternalMemoryHandleTypeFlagsNV           handleTypes
-}
-
-@extension("VK_NV_external_memory")
-class VkExportMemoryAllocateInfoNV {
-    VkStructureType                             sType
-    const void*                                 pNext
-    VkExternalMemoryHandleTypeFlagsNV           handleTypes
-}
-
-@extension("VK_NV_external_memory_win32")
-class VkImportMemoryWin32HandleInfoNV {
-    VkStructureType                             sType
-    const void*                                 pNext
-    VkExternalMemoryHandleTypeFlagsNV           handleType
-    platform.HANDLE                             handle
-}
-
-@extension("VK_NV_external_memory_win32")
-class VkExportMemoryWin32HandleInfoNV {
-    VkStructureType                             sType
-    const void*                                 pNext
-    const platform.SECURITY_ATTRIBUTES*         pAttributes
-    u32                                         dwAccess
-}
-
-@extension("VK_NV_win32_keyed_mutex")
-class VkWin32KeyedMutexAcquireReleaseInfoNV {
-    VkStructureType                             sType
-    const void*                                 pNext
-    u32                                         acquireCount
-    const VkDeviceMemory*                       pAcquireSyncs
-    const u64*                                  pAcquireKeys
-    const u32*                                  pAcquireTimeoutMilliseconds
-    u32                                         releaseCount
-    const VkDeviceMemory*                       pReleaseSyncs
-    const u64*                                  pReleaseKeys
-}
-
 @extension("VK_EXT_validation_flags")
 class VkValidationFlagsEXT {
     VkStructureType                             sType
@@ -3305,6 +3273,27 @@
     VkShaderStageFlags                          stageFlags
 }
 
+@extension("VK_KHR_incremental_present")
+class VkRectLayerKHR {
+    VkOffset2D                                  offset
+    VkExtent2D                                  extent
+    u32                                         layer
+}
+
+@extension("VK_KHR_incremental_present")
+class VkPresentRegionKHR {
+    u32                                         rectangleCount
+    const VkRectLayerKHR*                       pRectangles
+}
+
+@extension("VK_KHR_incremental_present")
+class VkPresentRegionsKHR {
+    VkStructureType                             sType
+    const void*                                 pNext
+    u32                                         swapchainCount
+    const VkPresentRegionKHR*                   pRegions
+}
+
 @extension("VK_EXT_hdr_metadata")
 class VkXYColorEXT {
     f32    x
@@ -3323,8 +3312,6 @@
     f32             maxFrameAverageLightLevel
 }
 
-
-
 ////////////////
 //  Commands  //
 ////////////////
@@ -5997,6 +5984,50 @@
         VkDebugMarkerMarkerInfoEXT*                 pMarkerInfo) {
 }
 
+@extension("VK_AMD_draw_indirect_count")
+cmd void vkCmdDrawIndirectCountAMD(
+        VkCommandBuffer                             commandBuffer,
+        VkBuffer                                    buffer,
+        VkDeviceSize                                offset,
+        VkBuffer                                    countBuffer,
+        VkDeviceSize                                countBufferOffset,
+        u32                                         maxDrawCount,
+        u32                                         stride) {
+}
+
+@extension("VK_AMD_draw_indirect_count")
+cmd void vkCmdDrawIndexedIndirectCountAMD(
+        VkCommandBuffer                             commandBuffer,
+        VkBuffer                                    buffer,
+        VkDeviceSize                                offset,
+        VkBuffer                                    countBuffer,
+        VkDeviceSize                                countBufferOffset,
+        u32                                         maxDrawCount,
+        u32                                         stride) {
+}
+
+@extension("VK_NV_external_memory_capabilities")
+cmd VkResult vkGetPhysicalDeviceExternalImageFormatPropertiesNV(
+        VkPhysicalDevice                            physicalDevice,
+        VkFormat                                    format,
+        VkImageType                                 type,
+        VkImageTiling                               tiling,
+        VkImageUsageFlags                           usage,
+        VkImageCreateFlags                          flags,
+        VkExternalMemoryHandleTypeFlagsNV           externalHandleType,
+        VkExternalImageFormatPropertiesNV*          pExternalImageFormatProperties) {
+    return ?
+}
+
+@extension("VK_NV_external_memory_win32")
+cmd VkResult vkGetMemoryWin32HandleNV(
+        VkDevice                                    device,
+        VkDeviceMemory                              memory,
+        VkExternalMemoryHandleTypeFlagsNV           handleType,
+        platform.HANDLE*                            pHandle) {
+    return ?
+}
+
 @extension("VK_KHR_get_physical_device_properties2")
 cmd void vkGetPhysicalDeviceFeatures2KHR(
         VkPhysicalDevice                            physicalDevice,
@@ -6045,64 +6076,20 @@
         VkSparseImageFormatProperties2KHR*          pProperties) {
 }
 
-@extension("VK_AMD_draw_indirect_count")
-cmd void vkCmdDrawIndirectCountAMD(
-        VkCommandBuffer                             commandBuffer,
-        VkBuffer                                    buffer,
-        VkDeviceSize                                offset,
-        VkBuffer                                    countBuffer,
-        VkDeviceSize                                countBufferOffset,
-        u32                                         maxDrawCount,
-        u32                                         stride) {
-}
-
-@extension("VK_AMD_draw_indirect_count")
-cmd void vkCmdDrawIndexedIndirectCountAMD(
-        VkCommandBuffer                             commandBuffer,
-        VkBuffer                                    buffer,
-        VkDeviceSize                                offset,
-        VkBuffer                                    countBuffer,
-        VkDeviceSize                                countBufferOffset,
-        u32                                         maxDrawCount,
-        u32                                         stride) {
-}
-
-@extension("VK_NV_external_memory_capabilities")
-cmd VkResult vkGetPhysicalDeviceExternalImageFormatPropertiesNV(
-        VkPhysicalDevice                            physicalDevice,
-        VkFormat                                    format,
-        VkImageType                                 type,
-        VkImageTiling                               tiling,
-        VkImageUsageFlags                           usage,
-        VkImageCreateFlags                          flags,
-        VkExternalMemoryHandleTypeFlagsNV           externalHandleType,
-        VkExternalImageFormatPropertiesNV*          pExternalImageFormatProperties) {
-    return ?
-}
-
-@extension("VK_NV_external_memory_win32")
-cmd VkResult vkGetMemoryWin32HandleNV(
-        VkDevice                                    device,
-        VkDeviceMemory                              memory,
-        VkExternalMemoryHandleTypeFlagsNV           handleType,
-        platform.HANDLE*                            pHandle) {
-    return ?
-}
-
-@extension("VK_NV_external_memory_win32")
-cmd void  vkCmdProcessCommandsNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd void vkCmdProcessCommandsNVX(
         VkCommandBuffer                             commandBuffer,
         const VkCmdProcessCommandsInfoNVX*          pProcessCommandsInfo) {
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd void  vkCmdReserveSpaceForCommandsNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd void vkCmdReserveSpaceForCommandsNVX(
         VkCommandBuffer                             commandBuffer,
         const VkCmdReserveSpaceForCommandsInfoNVX*  pReserveSpaceInfo) {
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd VkResult  vkCreateIndirectCommandsLayoutNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd VkResult vkCreateIndirectCommandsLayoutNVX(
         VkDevice                                    device,
         const VkIndirectCommandsLayoutCreateInfoNVX* pCreateInfo,
         const VkAllocationCallbacks*                pAllocator,
@@ -6110,15 +6097,15 @@
     return ?
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd void  vkDestroyIndirectCommandsLayoutNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd void vkDestroyIndirectCommandsLayoutNVX(
         VkDevice                                    device,
         VkIndirectCommandsLayoutNVX                 indirectCommandsLayout,
         const VkAllocationCallbacks*                pAllocator) {
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd VkResult  vkCreateObjectTableNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd VkResult vkCreateObjectTableNVX(
         VkDevice                                    device,
         const VkObjectTableCreateInfoNVX*           pCreateInfo,
         const VkAllocationCallbacks*                pAllocator,
@@ -6126,15 +6113,15 @@
     return ?
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd void  vkDestroyObjectTableNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd void vkDestroyObjectTableNVX(
         VkDevice                                    device,
         VkObjectTableNVX                            objectTable,
         const VkAllocationCallbacks*                pAllocator) {
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd VkResult  vkRegisterObjectsNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd VkResult vkRegisterObjectsNVX(
         VkDevice                                    device,
         VkObjectTableNVX                            objectTable,
         u32                                         objectCount,
@@ -6143,8 +6130,8 @@
     return ?
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd VkResult  vkUnregisterObjectsNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd VkResult vkUnregisterObjectsNVX(
         VkDevice                                    device,
         VkObjectTableNVX                            objectTable,
         u32                                         objectCount,
@@ -6153,13 +6140,21 @@
     return ?
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd void  vkGetPhysicalDeviceGeneratedCommandsPropertiesNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd void vkGetPhysicalDeviceGeneratedCommandsPropertiesNVX(
         VkPhysicalDevice                            physicalDevice,
         VkDeviceGeneratedCommandsFeaturesNVX*       pFeatures,
         VkDeviceGeneratedCommandsLimitsNVX*         pLimits) {
 }
 
+@extension("VK_EXT_hdr_metadata")
+cmd void vkSetHdrMetadataEXT(
+    VkDevice                                        device,
+    u32                                             swapchainCount,
+    const VkSwapchainKHR*                           pSwapchains,
+    const VkHdrMetadataEXT*                         pMetadata) {
+}
+
 @extension("VK_KHR_shared_presentable_image")
 cmd VkResult vkGetSwapchainStatusKHR(
         VkDevice                                    device,
@@ -6167,15 +6162,6 @@
     return ?
 }
 
-@extension("VK_EXT_hdr_metadata")
-cmd void  vkSetHdrMetadataEXT(
-    VkDevice                                        device,
-    u32                                             swapchainCount,
-    const VkSwapchainKHR*                           pSwapchains,
-    const VkHdrMetadataEXT*                         pMetadata) {
-}
-
-
 ////////////////
 // Validation //
 ////////////////
diff --git a/vulkan/include/vulkan/vk_android_native_buffer.h b/vulkan/include/vulkan/vk_android_native_buffer.h
index d7c5a07..43a9a9c 100644
--- a/vulkan/include/vulkan/vk_android_native_buffer.h
+++ b/vulkan/include/vulkan/vk_android_native_buffer.h
@@ -37,12 +37,13 @@
  * backwards-compatibility support is temporary, and will likely be removed in
  * (along with all gralloc0 support) in a future release.
  */
-#define VK_ANDROID_NATIVE_BUFFER_SPEC_VERSION     6
+#define VK_ANDROID_NATIVE_BUFFER_SPEC_VERSION     7
 #define VK_ANDROID_NATIVE_BUFFER_EXTENSION_NAME   "VK_ANDROID_native_buffer"
 
 #define VK_ANDROID_NATIVE_BUFFER_ENUM(type,id)    ((type)(1000000000 + (1000 * (VK_ANDROID_NATIVE_BUFFER_EXTENSION_NUMBER - 1)) + (id)))
 #define VK_STRUCTURE_TYPE_NATIVE_BUFFER_ANDROID   VK_ANDROID_NATIVE_BUFFER_ENUM(VkStructureType, 0)
 #define VK_STRUCTURE_TYPE_SWAPCHAIN_IMAGE_CREATE_INFO_ANDROID VK_ANDROID_NATIVE_BUFFER_ENUM(VkStructureType, 1)
+#define VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENTATION_PROPERTIES_ANDROID VK_ANDROID_NATIVE_BUFFER_ENUM(VkStructureType, 2)
 
 typedef enum VkSwapchainImageUsageFlagBitsANDROID {
     VK_SWAPCHAIN_IMAGE_USAGE_SHARED_BIT_ANDROID = 0x00000001,
@@ -75,6 +76,13 @@
     VkSwapchainImageUsageFlagsANDROID      usage;
 } VkSwapchainImageCreateInfoANDROID;
 
+typedef struct {
+    VkStructureType                        sType; // must be VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENTATION_PROPERTIES_ANDROID
+    const void*                            pNext;
+
+    VkBool32                               sharedImage;
+} VkPhysicalDevicePresentationPropertiesANDROID;
+
 // -- DEPRECATED in SPEC_VERSION 6 --
 typedef VkResult (VKAPI_PTR *PFN_vkGetSwapchainGrallocUsageANDROID)(VkDevice device, VkFormat format, VkImageUsageFlags imageUsage, int* grallocUsage);
 // -- ADDED in SPEC_VERSION 6 --
diff --git a/vulkan/include/vulkan/vk_platform.h b/vulkan/include/vulkan/vk_platform.h
index 610c723..2054447 100644
--- a/vulkan/include/vulkan/vk_platform.h
+++ b/vulkan/include/vulkan/vk_platform.h
@@ -53,7 +53,7 @@
     #define VKAPI_PTR  VKAPI_CALL
 #elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH < 7
     #error "Vulkan isn't supported for the 'armeabi' NDK ABI"
-#elif defined(__ANDROID__) && __ARM_ARCH >= 7 && __ARM_32BIT_STATE
+#elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH >= 7 && defined(__ARM_32BIT_STATE)
     // On Android 32-bit ARM targets, Vulkan functions use the "hardfloat"
     // calling convention, i.e. float parameters are passed in registers. This
     // is true even if the rest of the application passes floats on the stack,
@@ -94,9 +94,6 @@
 // controls inclusion of the extension interfaces in vulkan.h.
 
 #ifdef VK_USE_PLATFORM_ANDROID_KHR
-// FIXME: this forces a dependency on libandroid.so, we can't have that right now
-// because of circular dependencies. this will be resolved at a later time.
-//#include <android/native_window.h>
 struct ANativeWindow;
 #endif
 
diff --git a/vulkan/include/vulkan/vulkan.h b/vulkan/include/vulkan/vulkan.h
index 16f43e5..3c8ee1c 100644
--- a/vulkan/include/vulkan/vulkan.h
+++ b/vulkan/include/vulkan/vulkan.h
@@ -220,7 +220,6 @@
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_IMAGE_CREATE_INFO_NV = 1000026000,
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_BUFFER_CREATE_INFO_NV = 1000026001,
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_MEMORY_ALLOCATE_INFO_NV = 1000026002,
-    VK_STRUCTURE_TYPE_PRESENT_REGIONS_KHR = 1000084000,
     VK_STRUCTURE_TYPE_EXTERNAL_MEMORY_IMAGE_CREATE_INFO_NV = 1000056000,
     VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO_NV = 1000056001,
     VK_STRUCTURE_TYPE_IMPORT_MEMORY_WIN32_HANDLE_INFO_NV = 1000057000,
@@ -236,6 +235,7 @@
     VK_STRUCTURE_TYPE_SPARSE_IMAGE_FORMAT_PROPERTIES_2_KHR = 1000059007,
     VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SPARSE_IMAGE_FORMAT_INFO_2_KHR = 1000059008,
     VK_STRUCTURE_TYPE_VALIDATION_FLAGS_EXT = 1000061000,
+    VK_STRUCTURE_TYPE_PRESENT_REGIONS_KHR = 1000084000,
     VK_STRUCTURE_TYPE_OBJECT_TABLE_CREATE_INFO_NVX = 1000086000,
     VK_STRUCTURE_TYPE_INDIRECT_COMMANDS_LAYOUT_CREATE_INFO_NVX = 1000086001,
     VK_STRUCTURE_TYPE_CMD_PROCESS_COMMANDS_INFO_NVX = 1000086002,
@@ -3218,18 +3218,19 @@
 
 typedef enum VkColorSpaceKHR {
     VK_COLOR_SPACE_SRGB_NONLINEAR_KHR = 0,
-    VK_COLOR_SPACE_DISPLAY_P3_LINEAR_EXT = 1000104001,
-    VK_COLOR_SPACE_DISPLAY_P3_NONLINEAR_EXT = 1000104002,
-    VK_COLOR_SPACE_SCRGB_LINEAR_EXT = 1000104003,
-    VK_COLOR_SPACE_SCRGB_NONLINEAR_EXT = 1000104004,
-    VK_COLOR_SPACE_DCI_P3_LINEAR_EXT = 1000104005,
-    VK_COLOR_SPACE_DCI_P3_NONLINEAR_EXT = 1000104006,
-    VK_COLOR_SPACE_BT709_LINEAR_EXT = 1000104007,
-    VK_COLOR_SPACE_BT709_NONLINEAR_EXT = 1000104008,
-    VK_COLOR_SPACE_BT2020_LINEAR_EXT = 1000104009,
-    VK_COLOR_SPACE_BT2020_NONLINEAR_EXT = 1000104010,
+    VK_COLOR_SPACE_DISPLAY_P3_NONLINEAR_EXT = 1000104001,
+    VK_COLOR_SPACE_EXTENDED_SRGB_LINEAR_EXT = 1000104002,
+    VK_COLOR_SPACE_EXTENDED_SRGB_NONLINEAR_EXT = 1000104003,
+    VK_COLOR_SPACE_DCI_P3_LINEAR_EXT = 1000104004,
+    VK_COLOR_SPACE_DCI_P3_NONLINEAR_EXT = 1000104005,
+    VK_COLOR_SPACE_BT709_LINEAR_EXT = 1000104006,
+    VK_COLOR_SPACE_BT709_NONLINEAR_EXT = 1000104007,
+    VK_COLOR_SPACE_BT2020_LINEAR_EXT = 1000104008,
+    VK_COLOR_SPACE_BT2020_170M_EXT = 1000104009,
+    VK_COLOR_SPACE_BT2020_ST2084_EXT = 1000104010,
     VK_COLOR_SPACE_ADOBERGB_LINEAR_EXT = 1000104011,
     VK_COLOR_SPACE_ADOBERGB_NONLINEAR_EXT = 1000104012,
+    VK_COLOR_SPACE_PASS_THROUGH_EXT = 1000104013,
     VK_COLOR_SPACE_BEGIN_RANGE_KHR = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR,
     VK_COLOR_SPACE_END_RANGE_KHR = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR,
     VK_COLOR_SPACE_RANGE_SIZE_KHR = (VK_COLOR_SPACE_SRGB_NONLINEAR_KHR - VK_COLOR_SPACE_SRGB_NONLINEAR_KHR + 1),
@@ -3702,7 +3703,6 @@
 
 #ifdef VK_USE_PLATFORM_ANDROID_KHR
 #define VK_KHR_android_surface 1
-#include <android/native_window.h>
 
 #define VK_KHR_ANDROID_SURFACE_SPEC_VERSION 6
 #define VK_KHR_ANDROID_SURFACE_EXTENSION_NAME "VK_KHR_android_surface"
@@ -3713,7 +3713,7 @@
     VkStructureType                   sType;
     const void*                       pNext;
     VkAndroidSurfaceCreateFlagsKHR    flags;
-    ANativeWindow*                    window;
+    struct ANativeWindow*             window;
 } VkAndroidSurfaceCreateInfoKHR;
 
 
@@ -4154,52 +4154,6 @@
 } VkDedicatedAllocationMemoryAllocateInfoNV;
 
 
-#define VK_GOOGLE_display_timing 1
-#define VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION 1
-#define VK_GOOGLE_DISPLAY_TIMING_EXTENSION_NAME "VK_GOOGLE_display_timing"
-
-typedef struct VkRefreshCycleDurationGOOGLE {
-    uint64_t    refreshDuration;
-} VkRefreshCycleDurationGOOGLE;
-
-typedef struct VkPastPresentationTimingGOOGLE {
-    uint32_t    presentID;
-    uint64_t    desiredPresentTime;
-    uint64_t    actualPresentTime;
-    uint64_t    earliestPresentTime;
-    uint64_t    presentMargin;
-} VkPastPresentationTimingGOOGLE;
-
-typedef struct VkPresentTimeGOOGLE {
-    uint32_t    presentID;
-    uint64_t    desiredPresentTime;
-} VkPresentTimeGOOGLE;
-
-typedef struct VkPresentTimesInfoGOOGLE {
-    VkStructureType               sType;
-    const void*                   pNext;
-    uint32_t                      swapchainCount;
-    const VkPresentTimeGOOGLE*    pTimes;
-} VkPresentTimesInfoGOOGLE;
-
-
-typedef VkResult (VKAPI_PTR *PFN_vkGetRefreshCycleDurationGOOGLE)(VkDevice device, VkSwapchainKHR swapchain, VkRefreshCycleDurationGOOGLE* pDisplayTimingProperties);
-typedef VkResult (VKAPI_PTR *PFN_vkGetPastPresentationTimingGOOGLE)(VkDevice device, VkSwapchainKHR swapchain, uint32_t* pPresentationTimingCount, VkPastPresentationTimingGOOGLE* pPresentationTimings);
-
-#ifndef VK_NO_PROTOTYPES
-VKAPI_ATTR VkResult VKAPI_CALL vkGetRefreshCycleDurationGOOGLE(
-    VkDevice                                    device,
-    VkSwapchainKHR                              swapchain,
-    VkRefreshCycleDurationGOOGLE*               pDisplayTimingProperties);
-
-VKAPI_ATTR VkResult VKAPI_CALL vkGetPastPresentationTimingGOOGLE(
-    VkDevice                                    device,
-    VkSwapchainKHR                              swapchain,
-    uint32_t*                                   pPresentationTimingCount,
-    VkPastPresentationTimingGOOGLE*             pPresentationTimings);
-#endif
-
-
 #define VK_AMD_draw_indirect_count 1
 #define VK_AMD_DRAW_INDIRECT_COUNT_SPEC_VERSION 1
 #define VK_AMD_DRAW_INDIRECT_COUNT_EXTENSION_NAME "VK_AMD_draw_indirect_count"
@@ -4608,6 +4562,55 @@
     VkDeviceGeneratedCommandsLimitsNVX*         pLimits);
 #endif
 
+#define VK_GOOGLE_display_timing 1
+#define VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION 1
+#define VK_GOOGLE_DISPLAY_TIMING_EXTENSION_NAME "VK_GOOGLE_display_timing"
+
+typedef struct VkRefreshCycleDurationGOOGLE {
+    uint64_t    refreshDuration;
+} VkRefreshCycleDurationGOOGLE;
+
+typedef struct VkPastPresentationTimingGOOGLE {
+    uint32_t    presentID;
+    uint64_t    desiredPresentTime;
+    uint64_t    actualPresentTime;
+    uint64_t    earliestPresentTime;
+    uint64_t    presentMargin;
+} VkPastPresentationTimingGOOGLE;
+
+typedef struct VkPresentTimeGOOGLE {
+    uint32_t    presentID;
+    uint64_t    desiredPresentTime;
+} VkPresentTimeGOOGLE;
+
+typedef struct VkPresentTimesInfoGOOGLE {
+    VkStructureType               sType;
+    const void*                   pNext;
+    uint32_t                      swapchainCount;
+    const VkPresentTimeGOOGLE*    pTimes;
+} VkPresentTimesInfoGOOGLE;
+
+
+typedef VkResult (VKAPI_PTR *PFN_vkGetRefreshCycleDurationGOOGLE)(VkDevice device, VkSwapchainKHR swapchain, VkRefreshCycleDurationGOOGLE* pDisplayTimingProperties);
+typedef VkResult (VKAPI_PTR *PFN_vkGetPastPresentationTimingGOOGLE)(VkDevice device, VkSwapchainKHR swapchain, uint32_t* pPresentationTimingCount, VkPastPresentationTimingGOOGLE* pPresentationTimings);
+
+#ifndef VK_NO_PROTOTYPES
+VKAPI_ATTR VkResult VKAPI_CALL vkGetRefreshCycleDurationGOOGLE(
+    VkDevice                                    device,
+    VkSwapchainKHR                              swapchain,
+    VkRefreshCycleDurationGOOGLE*               pDisplayTimingProperties);
+
+VKAPI_ATTR VkResult VKAPI_CALL vkGetPastPresentationTimingGOOGLE(
+    VkDevice                                    device,
+    VkSwapchainKHR                              swapchain,
+    uint32_t*                                   pPresentationTimingCount,
+    VkPastPresentationTimingGOOGLE*             pPresentationTimings);
+#endif
+
+#define VK_EXT_swapchain_colorspace 1
+#define VK_EXT_SWAPCHAIN_COLOR_SPACE_SPEC_VERSION 1
+#define VK_EXT_SWAPCHAIN_COLOR_SPACE_EXTENSION_NAME "VK_EXT_swapchain_colorspace"
+
 #define VK_EXT_hdr_metadata 1
 #define VK_EXT_HDR_METADATA_SPEC_VERSION  0
 #define VK_EXT_HDR_METADATA_EXTENSION_NAME "VK_EXT_hdr_metadata"
diff --git a/vulkan/libvulkan/code-generator.tmpl b/vulkan/libvulkan/code-generator.tmpl
index caf38bc..992c5d1 100644
--- a/vulkan/libvulkan/code-generator.tmpl
+++ b/vulkan/libvulkan/code-generator.tmpl
@@ -319,7 +319,7 @@
 }

 ProcHook::Extension GetProcHookExtension(const char* name) {
-  {{$exts := Strings (Macro "driver.InterceptedExtensions") | SplitOn "\n"}}
+  {{$exts := Strings (Macro "driver.KnownExtensions") | SplitOn "\n"}}
   // clang-format off
   {{range $e := $exts}}
     if (strcmp(name, "{{$e}}") == 0) return ProcHook::{{TrimPrefix "VK_" $e}};
@@ -683,12 +683,24 @@
 VK_ANDROID_native_buffer
 VK_EXT_debug_report
 VK_EXT_hdr_metadata
+VK_EXT_swapchain_colorspace
 VK_GOOGLE_display_timing
 VK_KHR_android_surface
 VK_KHR_incremental_present
+VK_KHR_shared_presentable_image
 VK_KHR_surface
 VK_KHR_swapchain
-VK_KHR_shared_presentable_image
+{{end}}
+
+
+{{/*
+------------------------------------------------------------------------------
+  Emits a list of extensions known to vulkan::driver.
+------------------------------------------------------------------------------
+*/}}
+{{define "driver.KnownExtensions"}}
+{{Macro "driver.InterceptedExtensions"}}
+VK_KHR_get_physical_device_properties2
 {{end}}
 
 
@@ -776,7 +788,7 @@
       };
 
       enum Extension {
-        {{$exts := Strings (Macro "driver.InterceptedExtensions") | SplitOn "\n"}}
+        {{$exts := Strings (Macro "driver.KnownExtensions") | SplitOn "\n"}}
         {{range $e := $exts}}
           {{TrimPrefix "VK_" $e}},
         {{end}}
@@ -965,7 +977,7 @@
     {{else if eq $.Name "vkDestroyImage"}}true
 
     {{else if eq $.Name "vkGetPhysicalDeviceProperties"}}true
-
+    {{else if eq $.Name "vkGetPhysicalDeviceProperties2KHR"}}true
     {{end}}
 
     {{$ext := GetAnnotation $ "extension"}}
@@ -1122,6 +1134,8 @@
   {{else if eq $ext "VK_KHR_wayland_surface"}}true
   {{else if eq $ext "VK_KHR_mir_surface"}}true
   {{else if eq $ext "VK_KHR_win32_surface"}}true
+  {{else if eq $ext "VK_NV_external_memory_win32"}}true
+  {{else if eq $ext "VK_NV_win32_keyed_mutex"}}true
   {{end}}
 {{end}}
 
diff --git a/vulkan/libvulkan/driver.cpp b/vulkan/libvulkan/driver.cpp
index 71bfecf..b62eec6 100644
--- a/vulkan/libvulkan/driver.cpp
+++ b/vulkan/libvulkan/driver.cpp
@@ -29,6 +29,7 @@
 #include <android/dlext.h>
 #include <cutils/properties.h>
 #include <ui/GraphicsEnv.h>
+#include <utils/Vector.h>
 
 #include "driver.h"
 #include "stubhal.h"
@@ -446,6 +447,7 @@
         switch (ext_bit) {
             case ProcHook::KHR_android_surface:
             case ProcHook::KHR_surface:
+            case ProcHook::EXT_swapchain_colorspace:
                 hook_extensions_.set(ext_bit);
                 // return now as these extensions do not require HAL support
                 return;
@@ -454,6 +456,7 @@
                 hook_extensions_.set(ext_bit);
                 break;
             case ProcHook::EXTENSION_UNKNOWN:
+            case ProcHook::KHR_get_physical_device_properties2:
                 // HAL's extensions
                 break;
             default:
@@ -469,6 +472,7 @@
                 break;
             case ProcHook::KHR_incremental_present:
             case ProcHook::GOOGLE_display_timing:
+            case ProcHook::KHR_shared_presentable_image:
                 hook_extensions_.set(ext_bit);
                 // return now as these extensions do not require HAL support
                 return;
@@ -478,9 +482,6 @@
             case ProcHook::EXTENSION_UNKNOWN:
                 // HAL's extensions
                 break;
-            case ProcHook::KHR_shared_presentable_image:
-                // Exposed by HAL, but API surface is all in the loader
-                break;
             default:
                 ALOGW("Ignored invalid device extension %s", name);
                 return;
@@ -498,10 +499,6 @@
             if (ext_bit == ProcHook::ANDROID_native_buffer)
                 hook_extensions_.set(ProcHook::KHR_swapchain);
 
-            // Exposed by HAL, but API surface is all in the loader
-            if (ext_bit == ProcHook::KHR_shared_presentable_image)
-                hook_extensions_.set(ext_bit);
-
             hal_extensions_.set(ext_bit);
         }
 
@@ -677,11 +674,13 @@
     const char* pLayerName,
     uint32_t* pPropertyCount,
     VkExtensionProperties* pProperties) {
-    static const std::array<VkExtensionProperties, 2> loader_extensions = {{
+    static const std::array<VkExtensionProperties, 3> loader_extensions = {{
         // WSI extensions
         {VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_SURFACE_SPEC_VERSION},
         {VK_KHR_ANDROID_SURFACE_EXTENSION_NAME,
          VK_KHR_ANDROID_SURFACE_SPEC_VERSION},
+        {VK_EXT_SWAPCHAIN_COLOR_SPACE_EXTENSION_NAME,
+         VK_EXT_SWAPCHAIN_COLOR_SPACE_SPEC_VERSION},
     }};
     static const VkExtensionProperties loader_debug_report_extension = {
         VK_EXT_DEBUG_REPORT_EXTENSION_NAME, VK_EXT_DEBUG_REPORT_SPEC_VERSION,
@@ -734,21 +733,60 @@
     return result;
 }
 
+bool QueryPresentationProperties(
+    VkPhysicalDevice physicalDevice,
+    VkPhysicalDevicePresentationPropertiesANDROID *presentation_properties)
+{
+    const InstanceData& data = GetData(physicalDevice);
+
+    // GPDP2 must be present and enabled on the instance.
+    if (!data.driver.GetPhysicalDeviceProperties2KHR)
+        return false;
+
+    // Request the android-specific presentation properties via GPDP2
+    VkPhysicalDeviceProperties2KHR properties = {
+        VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2_KHR,
+        presentation_properties,
+        {}
+    };
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wold-style-cast"
+    presentation_properties->sType =
+        VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENTATION_PROPERTIES_ANDROID;
+#pragma clang diagnostic pop
+    presentation_properties->pNext = nullptr;
+    presentation_properties->sharedImage = VK_FALSE;
+
+    data.driver.GetPhysicalDeviceProperties2KHR(physicalDevice,
+                                                &properties);
+
+    return true;
+}
+
 VkResult EnumerateDeviceExtensionProperties(
     VkPhysicalDevice physicalDevice,
     const char* pLayerName,
     uint32_t* pPropertyCount,
     VkExtensionProperties* pProperties) {
     const InstanceData& data = GetData(physicalDevice);
-    static const std::array<VkExtensionProperties, 3> loader_extensions = {{
-        // WSI extensions
-        {VK_KHR_INCREMENTAL_PRESENT_EXTENSION_NAME,
-         VK_KHR_INCREMENTAL_PRESENT_SPEC_VERSION},
-        {VK_GOOGLE_DISPLAY_TIMING_EXTENSION_NAME,
-         VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION},
-        {VK_EXT_HDR_METADATA_EXTENSION_NAME,
-         VK_EXT_HDR_METADATA_SPEC_VERSION},
-    }};
+    // extensions that are unconditionally exposed by the loader
+    android::Vector<VkExtensionProperties> loader_extensions;
+    loader_extensions.push_back({
+        VK_KHR_INCREMENTAL_PRESENT_EXTENSION_NAME,
+        VK_KHR_INCREMENTAL_PRESENT_SPEC_VERSION});
+    loader_extensions.push_back({
+        VK_GOOGLE_DISPLAY_TIMING_EXTENSION_NAME,
+        VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION});
+
+    // conditionally add shared_presentable_image if supportable
+    VkPhysicalDevicePresentationPropertiesANDROID presentation_properties;
+    if (QueryPresentationProperties(physicalDevice, &presentation_properties) &&
+        presentation_properties.sharedImage) {
+        loader_extensions.push_back({
+            VK_KHR_SHARED_PRESENTABLE_IMAGE_EXTENSION_NAME,
+            VK_KHR_SHARED_PRESENTABLE_IMAGE_SPEC_VERSION});
+    }
 
     // enumerate our extensions first
     if (!pLayerName && pProperties) {
diff --git a/vulkan/libvulkan/driver.h b/vulkan/libvulkan/driver.h
index 5383f59..7f8ae98 100644
--- a/vulkan/libvulkan/driver.h
+++ b/vulkan/libvulkan/driver.h
@@ -109,6 +109,10 @@
 bool OpenHAL();
 const VkAllocationCallbacks& GetDefaultAllocator();
 
+bool QueryPresentationProperties(
+    VkPhysicalDevice physicalDevice,
+    VkPhysicalDevicePresentationPropertiesANDROID *presentation_properties);
+
 // clang-format off
 VKAPI_ATTR PFN_vkVoidFunction GetInstanceProcAddr(VkInstance instance, const char* pName);
 VKAPI_ATTR PFN_vkVoidFunction GetDeviceProcAddr(VkDevice device, const char* pName);
diff --git a/vulkan/libvulkan/driver_gen.cpp b/vulkan/libvulkan/driver_gen.cpp
index 59964fb..fc3f87a 100644
--- a/vulkan/libvulkan/driver_gen.cpp
+++ b/vulkan/libvulkan/driver_gen.cpp
@@ -93,6 +93,14 @@
     }
 }
 
+VKAPI_ATTR void checkedSetHdrMetadataEXT(VkDevice device, uint32_t swapchainCount, const VkSwapchainKHR* pSwapchains, const VkHdrMetadataEXT* pMetadata) {
+    if (GetData(device).hook_extensions[ProcHook::EXT_hdr_metadata]) {
+        SetHdrMetadataEXT(device, swapchainCount, pSwapchains, pMetadata);
+    } else {
+        Logger(device).Err(device, "VK_EXT_hdr_metadata not enabled. vkSetHdrMetadataEXT not executed.");
+    }
+}
+
 VKAPI_ATTR VkResult checkedGetSwapchainStatusKHR(VkDevice device, VkSwapchainKHR swapchain) {
     if (GetData(device).hook_extensions[ProcHook::KHR_shared_presentable_image]) {
         return GetSwapchainStatusKHR(device, swapchain);
@@ -102,14 +110,6 @@
     }
 }
 
-VKAPI_ATTR void checkedSetHdrMetadataEXT(VkDevice device, uint32_t swapchainCount, const VkSwapchainKHR* pSwapchains, const VkHdrMetadataEXT* pMetadata) {
-    if (GetData(device).hook_extensions[ProcHook::EXT_hdr_metadata]) {
-        SetHdrMetadataEXT(device, swapchainCount, pSwapchains, pMetadata);
-    } else {
-        Logger(device).Err(device, "VK_EXT_hdr_metadata not enabled. vkSetHdrMetadataEXT not executed.");
-    }
-}
-
 // clang-format on
 
 const ProcHook g_proc_hooks[] = {
@@ -365,12 +365,14 @@
     if (strcmp(name, "VK_ANDROID_native_buffer") == 0) return ProcHook::ANDROID_native_buffer;
     if (strcmp(name, "VK_EXT_debug_report") == 0) return ProcHook::EXT_debug_report;
     if (strcmp(name, "VK_EXT_hdr_metadata") == 0) return ProcHook::EXT_hdr_metadata;
+    if (strcmp(name, "VK_EXT_swapchain_colorspace") == 0) return ProcHook::EXT_swapchain_colorspace;
     if (strcmp(name, "VK_GOOGLE_display_timing") == 0) return ProcHook::GOOGLE_display_timing;
     if (strcmp(name, "VK_KHR_android_surface") == 0) return ProcHook::KHR_android_surface;
     if (strcmp(name, "VK_KHR_incremental_present") == 0) return ProcHook::KHR_incremental_present;
+    if (strcmp(name, "VK_KHR_shared_presentable_image") == 0) return ProcHook::KHR_shared_presentable_image;
     if (strcmp(name, "VK_KHR_surface") == 0) return ProcHook::KHR_surface;
     if (strcmp(name, "VK_KHR_swapchain") == 0) return ProcHook::KHR_swapchain;
-    if (strcmp(name, "VK_KHR_shared_presentable_image") == 0) return ProcHook::KHR_shared_presentable_image;
+    if (strcmp(name, "VK_KHR_get_physical_device_properties2") == 0) return ProcHook::KHR_get_physical_device_properties2;
     // clang-format on
     return ProcHook::EXTENSION_UNKNOWN;
 }
@@ -409,6 +411,7 @@
     INIT_PROC_EXT(EXT_debug_report, true, instance, CreateDebugReportCallbackEXT);
     INIT_PROC_EXT(EXT_debug_report, true, instance, DestroyDebugReportCallbackEXT);
     INIT_PROC_EXT(EXT_debug_report, true, instance, DebugReportMessageEXT);
+    INIT_PROC_EXT(KHR_get_physical_device_properties2, true, instance, GetPhysicalDeviceProperties2KHR);
     // clang-format on
 
     return success;
diff --git a/vulkan/libvulkan/driver_gen.h b/vulkan/libvulkan/driver_gen.h
index 273e796..738da5b 100644
--- a/vulkan/libvulkan/driver_gen.h
+++ b/vulkan/libvulkan/driver_gen.h
@@ -36,12 +36,14 @@
         ANDROID_native_buffer,
         EXT_debug_report,
         EXT_hdr_metadata,
+        EXT_swapchain_colorspace,
         GOOGLE_display_timing,
         KHR_android_surface,
         KHR_incremental_present,
+        KHR_shared_presentable_image,
         KHR_surface,
         KHR_swapchain,
-        KHR_shared_presentable_image,
+        KHR_get_physical_device_properties2,
 
         EXTENSION_CORE,  // valid bit
         EXTENSION_COUNT,
@@ -67,6 +69,7 @@
     PFN_vkCreateDebugReportCallbackEXT CreateDebugReportCallbackEXT;
     PFN_vkDestroyDebugReportCallbackEXT DestroyDebugReportCallbackEXT;
     PFN_vkDebugReportMessageEXT DebugReportMessageEXT;
+    PFN_vkGetPhysicalDeviceProperties2KHR GetPhysicalDeviceProperties2KHR;
     // clang-format on
 };
 
diff --git a/vulkan/libvulkan/swapchain.cpp b/vulkan/libvulkan/swapchain.cpp
index b1e3d61..a0ae1f3 100644
--- a/vulkan/libvulkan/swapchain.cpp
+++ b/vulkan/libvulkan/swapchain.cpp
@@ -380,6 +380,75 @@
     *count = num_copied;
 }
 
+android_pixel_format GetNativePixelFormat(VkFormat format) {
+    android_pixel_format native_format = HAL_PIXEL_FORMAT_RGBA_8888;
+    switch (format) {
+        case VK_FORMAT_R8G8B8A8_UNORM:
+        case VK_FORMAT_R8G8B8A8_SRGB:
+            native_format = HAL_PIXEL_FORMAT_RGBA_8888;
+            break;
+        case VK_FORMAT_R5G6B5_UNORM_PACK16:
+            native_format = HAL_PIXEL_FORMAT_RGB_565;
+            break;
+        case VK_FORMAT_R16G16B16A16_SFLOAT:
+            native_format = HAL_PIXEL_FORMAT_RGBA_FP16;
+            break;
+        case VK_FORMAT_A2R10G10B10_UNORM_PACK32:
+            native_format = HAL_PIXEL_FORMAT_RGBA_1010102;
+            break;
+        default:
+            ALOGV("unsupported swapchain format %d", format);
+            break;
+    }
+    return native_format;
+}
+
+android_dataspace GetNativeDataspace(VkColorSpaceKHR colorspace) {
+    switch (colorspace) {
+        case VK_COLOR_SPACE_SRGB_NONLINEAR_KHR:
+            return HAL_DATASPACE_V0_SRGB;
+        case VK_COLOR_SPACE_DISPLAY_P3_NONLINEAR_EXT:
+            return HAL_DATASPACE_DISPLAY_P3;
+        case VK_COLOR_SPACE_EXTENDED_SRGB_LINEAR_EXT:
+            return HAL_DATASPACE_V0_SCRGB_LINEAR;
+        case VK_COLOR_SPACE_EXTENDED_SRGB_NONLINEAR_EXT:
+            return HAL_DATASPACE_V0_SCRGB;
+        case VK_COLOR_SPACE_DCI_P3_LINEAR_EXT:
+            return HAL_DATASPACE_DCI_P3_LINEAR;
+        case VK_COLOR_SPACE_DCI_P3_NONLINEAR_EXT:
+            return HAL_DATASPACE_DCI_P3;
+        case VK_COLOR_SPACE_BT709_LINEAR_EXT:
+            return HAL_DATASPACE_V0_SRGB_LINEAR;
+        case VK_COLOR_SPACE_BT709_NONLINEAR_EXT:
+            return HAL_DATASPACE_V0_SRGB;
+        case VK_COLOR_SPACE_BT2020_170M_EXT:
+            return static_cast<android_dataspace>(
+                HAL_DATASPACE_STANDARD_BT2020 |
+                HAL_DATASPACE_TRANSFER_SMPTE_170M | HAL_DATASPACE_RANGE_FULL);
+        case VK_COLOR_SPACE_BT2020_ST2084_EXT:
+            return static_cast<android_dataspace>(
+                HAL_DATASPACE_STANDARD_BT2020 | HAL_DATASPACE_TRANSFER_ST2084 |
+                HAL_DATASPACE_RANGE_FULL);
+        case VK_COLOR_SPACE_ADOBERGB_LINEAR_EXT:
+            return static_cast<android_dataspace>(
+                HAL_DATASPACE_STANDARD_ADOBE_RGB |
+                HAL_DATASPACE_TRANSFER_LINEAR | HAL_DATASPACE_RANGE_FULL);
+        case VK_COLOR_SPACE_ADOBERGB_NONLINEAR_EXT:
+            return HAL_DATASPACE_ADOBE_RGB;
+
+        // Pass through is intended to allow app to provide data that is passed
+        // to the display system without modification.
+        case VK_COLOR_SPACE_PASS_THROUGH_EXT:
+            return HAL_DATASPACE_ARBITRARY;
+
+        default:
+            // This indicates that we don't know about the
+            // dataspace specified and we should indicate that
+            // it's unsupported
+            return HAL_DATASPACE_UNKNOWN;
+    }
+}
+
 }  // anonymous namespace
 
 VKAPI_ATTR
@@ -410,7 +479,7 @@
               err);
         surface->~Surface();
         allocator->pfnFree(allocator->pUserData, surface);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_NATIVE_WINDOW_IN_USE_KHR;
     }
 
     *out_surface = HandleFromSurface(surface);
@@ -458,13 +527,13 @@
     if (err != 0) {
         ALOGE("NATIVE_WINDOW_DEFAULT_WIDTH query failed: %s (%d)",
               strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
     err = window->query(window, NATIVE_WINDOW_DEFAULT_HEIGHT, &height);
     if (err != 0) {
         ALOGE("NATIVE_WINDOW_DEFAULT_WIDTH query failed: %s (%d)",
               strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     int transform_hint;
@@ -472,7 +541,7 @@
     if (err != 0) {
         ALOGE("NATIVE_WINDOW_TRANSFORM_HINT query failed: %s (%d)",
               strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     // TODO(jessehall): Figure out what the min/max values should be.
@@ -512,10 +581,12 @@
 }
 
 VKAPI_ATTR
-VkResult GetPhysicalDeviceSurfaceFormatsKHR(VkPhysicalDevice /*pdev*/,
-                                            VkSurfaceKHR /*surface*/,
+VkResult GetPhysicalDeviceSurfaceFormatsKHR(VkPhysicalDevice pdev,
+                                            VkSurfaceKHR surface_handle,
                                             uint32_t* count,
                                             VkSurfaceFormatKHR* formats) {
+    const InstanceData& instance_data = GetData(pdev);
+
     // TODO(jessehall): Fill out the set of supported formats. Longer term, add
     // a new gralloc method to query whether a (format, usage) pair is
     // supported, and check that for each gralloc format that corresponds to a
@@ -528,40 +599,82 @@
         {VK_FORMAT_R5G6B5_UNORM_PACK16, VK_COLOR_SPACE_SRGB_NONLINEAR_KHR},
     };
     const uint32_t kNumFormats = sizeof(kFormats) / sizeof(kFormats[0]);
+    uint32_t total_num_formats = kNumFormats;
+
+    bool wide_color_support = false;
+    Surface& surface = *SurfaceFromHandle(surface_handle);
+    int err = native_window_get_wide_color_support(surface.window.get(),
+                                                   &wide_color_support);
+    if (err) {
+        // Not allowed to return a more sensible error code, so do this
+        return VK_ERROR_OUT_OF_HOST_MEMORY;
+    }
+    ALOGV("wide_color_support is: %d", wide_color_support);
+    wide_color_support =
+        wide_color_support &&
+        instance_data.hook_extensions.test(ProcHook::EXT_swapchain_colorspace);
+
+    const VkSurfaceFormatKHR kWideColorFormats[] = {
+        {VK_FORMAT_R16G16B16A16_SFLOAT,
+         VK_COLOR_SPACE_EXTENDED_SRGB_LINEAR_EXT},
+        {VK_FORMAT_A2R10G10B10_UNORM_PACK32,
+         VK_COLOR_SPACE_DISPLAY_P3_NONLINEAR_EXT},
+    };
+    const uint32_t kNumWideColorFormats =
+        sizeof(kWideColorFormats) / sizeof(kWideColorFormats[0]);
+    if (wide_color_support) {
+        total_num_formats += kNumWideColorFormats;
+    }
 
     VkResult result = VK_SUCCESS;
     if (formats) {
-        if (*count < kNumFormats)
+        uint32_t out_count = 0;
+        uint32_t transfer_count = 0;
+        if (*count < total_num_formats)
             result = VK_INCOMPLETE;
-        *count = std::min(*count, kNumFormats);
-        std::copy(kFormats, kFormats + *count, formats);
+        transfer_count = std::min(*count, kNumFormats);
+        std::copy(kFormats, kFormats + transfer_count, formats);
+        out_count += transfer_count;
+        if (wide_color_support) {
+            transfer_count = std::min(*count - out_count, kNumWideColorFormats);
+            std::copy(kWideColorFormats, kWideColorFormats + transfer_count,
+                      formats + out_count);
+            out_count += transfer_count;
+        }
+        *count = out_count;
     } else {
-        *count = kNumFormats;
+        *count = total_num_formats;
     }
     return result;
 }
 
 VKAPI_ATTR
-VkResult GetPhysicalDeviceSurfacePresentModesKHR(VkPhysicalDevice /*pdev*/,
+VkResult GetPhysicalDeviceSurfacePresentModesKHR(VkPhysicalDevice pdev,
                                                  VkSurfaceKHR /*surface*/,
                                                  uint32_t* count,
                                                  VkPresentModeKHR* modes) {
-    const VkPresentModeKHR kModes[] = {
-        VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_FIFO_KHR,
-        // TODO(chrisforbes): should only expose this if the driver can.
-        // VK_PRESENT_MODE_SHARED_DEMAND_REFRESH_KHR,
-        // VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR,
-    };
-    const uint32_t kNumModes = sizeof(kModes) / sizeof(kModes[0]);
+    android::Vector<VkPresentModeKHR> present_modes;
+    present_modes.push_back(VK_PRESENT_MODE_MAILBOX_KHR);
+    present_modes.push_back(VK_PRESENT_MODE_FIFO_KHR);
+
+    VkPhysicalDevicePresentationPropertiesANDROID present_properties;
+    if (QueryPresentationProperties(pdev, &present_properties)) {
+        if (present_properties.sharedImage) {
+            present_modes.push_back(VK_PRESENT_MODE_SHARED_DEMAND_REFRESH_KHR);
+            present_modes.push_back(VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR);
+        }
+    }
+
+    uint32_t num_modes = uint32_t(present_modes.size());
 
     VkResult result = VK_SUCCESS;
     if (modes) {
-        if (*count < kNumModes)
+        if (*count < num_modes)
             result = VK_INCOMPLETE;
-        *count = std::min(*count, kNumModes);
-        std::copy(kModes, kModes + *count, modes);
+        *count = std::min(*count, num_modes);
+        std::copy(present_modes.begin(), present_modes.begin() + int(*count), modes);
     } else {
-        *count = kNumModes;
+        *count = num_modes;
     }
     return result;
 }
@@ -588,12 +701,21 @@
     if (!allocator)
         allocator = &GetData(device).allocator;
 
+    android_pixel_format native_pixel_format =
+        GetNativePixelFormat(create_info->imageFormat);
+    android_dataspace native_dataspace =
+        GetNativeDataspace(create_info->imageColorSpace);
+    if (native_dataspace == HAL_DATASPACE_UNKNOWN) {
+        ALOGE(
+            "CreateSwapchainKHR(VkSwapchainCreateInfoKHR.imageColorSpace = %d) "
+            "failed: Unsupported color space",
+            create_info->imageColorSpace);
+        return VK_ERROR_INITIALIZATION_FAILED;
+    }
+
     ALOGV_IF(create_info->imageArrayLayers != 1,
              "swapchain imageArrayLayers=%u not supported",
              create_info->imageArrayLayers);
-    ALOGV_IF(create_info->imageColorSpace != VK_COLOR_SPACE_SRGB_NONLINEAR_KHR,
-             "swapchain imageColorSpace=%u not supported",
-             create_info->imageColorSpace);
     ALOGV_IF((create_info->preTransform & ~kSupportedTransforms) != 0,
              "swapchain preTransform=%#x not supported",
              create_info->preTransform);
@@ -642,65 +764,55 @@
     if (err != 0) {
         ALOGE("native_window_set_buffer_count(0) failed: %s (%d)",
               strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
-    err = surface.window->setSwapInterval(surface.window.get(), 1);
+    int swap_interval =
+        create_info->presentMode == VK_PRESENT_MODE_MAILBOX_KHR ? 0 : 1;
+    err = surface.window->setSwapInterval(surface.window.get(), swap_interval);
     if (err != 0) {
         // TODO(jessehall): Improve error reporting. Can we enumerate possible
         // errors and translate them to valid Vulkan result codes?
         ALOGE("native_window->setSwapInterval(1) failed: %s (%d)",
               strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     err = native_window_set_shared_buffer_mode(surface.window.get(), false);
     if (err != 0) {
         ALOGE("native_window_set_shared_buffer_mode(false) failed: %s (%d)",
               strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     err = native_window_set_auto_refresh(surface.window.get(), false);
     if (err != 0) {
         ALOGE("native_window_set_auto_refresh(false) failed: %s (%d)",
               strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     // -- Configure the native window --
 
     const auto& dispatch = GetData(device).driver;
 
-    int native_format = HAL_PIXEL_FORMAT_RGBA_8888;
-    switch (create_info->imageFormat) {
-        case VK_FORMAT_R8G8B8A8_UNORM:
-        case VK_FORMAT_R8G8B8A8_SRGB:
-            native_format = HAL_PIXEL_FORMAT_RGBA_8888;
-            break;
-        case VK_FORMAT_R5G6B5_UNORM_PACK16:
-            native_format = HAL_PIXEL_FORMAT_RGB_565;
-            break;
-        default:
-            ALOGV("unsupported swapchain format %d", create_info->imageFormat);
-            break;
-    }
-    err = native_window_set_buffers_format(surface.window.get(), native_format);
+    err = native_window_set_buffers_format(surface.window.get(),
+                                           native_pixel_format);
     if (err != 0) {
         // TODO(jessehall): Improve error reporting. Can we enumerate possible
         // errors and translate them to valid Vulkan result codes?
         ALOGE("native_window_set_buffers_format(%d) failed: %s (%d)",
-              native_format, strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+              native_pixel_format, strerror(-err), err);
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
     err = native_window_set_buffers_data_space(surface.window.get(),
-                                               HAL_DATASPACE_SRGB_LINEAR);
+                                               native_dataspace);
     if (err != 0) {
         // TODO(jessehall): Improve error reporting. Can we enumerate possible
         // errors and translate them to valid Vulkan result codes?
         ALOGE("native_window_set_buffers_data_space(%d) failed: %s (%d)",
-              HAL_DATASPACE_SRGB_LINEAR, strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+              native_dataspace, strerror(-err), err);
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     err = native_window_set_buffers_dimensions(
@@ -712,7 +824,7 @@
         ALOGE("native_window_set_buffers_dimensions(%d,%d) failed: %s (%d)",
               create_info->imageExtent.width, create_info->imageExtent.height,
               strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     // VkSwapchainCreateInfo::preTransform indicates the transformation the app
@@ -732,7 +844,7 @@
         ALOGE("native_window_set_buffers_transform(%d) failed: %s (%d)",
               InvertTransformToNative(create_info->preTransform),
               strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     err = native_window_set_scaling_mode(
@@ -742,7 +854,7 @@
         // errors and translate them to valid Vulkan result codes?
         ALOGE("native_window_set_scaling_mode(SCALE_TO_WINDOW) failed: %s (%d)",
               strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     int query_value;
@@ -754,16 +866,9 @@
         // errors and translate them to valid Vulkan result codes?
         ALOGE("window->query failed: %s (%d) value=%d", strerror(-err), err,
               query_value);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
     uint32_t min_undequeued_buffers = static_cast<uint32_t>(query_value);
-    // The MIN_UNDEQUEUED_BUFFERS query doesn't know whether we'll be using
-    // async mode or not, and assumes not. But in async mode, the BufferQueue
-    // requires an extra undequeued buffer.
-    // See BufferQueueCore::getMinUndequeuedBufferCountLocked().
-    if (create_info->presentMode == VK_PRESENT_MODE_MAILBOX_KHR)
-        min_undequeued_buffers += 1;
-
     uint32_t num_images =
         (create_info->minImageCount - 1) + min_undequeued_buffers;
     err = native_window_set_buffer_count(surface.window.get(), num_images);
@@ -772,7 +877,7 @@
         // errors and translate them to valid Vulkan result codes?
         ALOGE("native_window_set_buffer_count(%d) failed: %s (%d)", num_images,
               strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     VkSwapchainImageUsageFlagsANDROID swapchain_image_usage = 0;
@@ -783,7 +888,7 @@
         err = native_window_set_shared_buffer_mode(surface.window.get(), true);
         if (err != 0) {
             ALOGE("native_window_set_shared_buffer_mode failed: %s (%d)", strerror(-err), err);
-            return VK_ERROR_INITIALIZATION_FAILED;
+            return VK_ERROR_SURFACE_LOST_KHR;
         }
     }
 
@@ -791,14 +896,15 @@
         err = native_window_set_auto_refresh(surface.window.get(), true);
         if (err != 0) {
             ALOGE("native_window_set_auto_refresh failed: %s (%d)", strerror(-err), err);
-            return VK_ERROR_INITIALIZATION_FAILED;
+            return VK_ERROR_SURFACE_LOST_KHR;
         }
     }
 
     int gralloc_usage = 0;
     if (dispatch.GetSwapchainGrallocUsage2ANDROID) {
         uint64_t consumer_usage, producer_usage;
-        if (GetData(device).driver_version == 256587285) {
+        uint32_t driver_version = GetData(device).driver_version;
+        if (driver_version == 256587285 || driver_version == 96011958) {
             // HACK workaround for loader/driver mismatch during transition to
             // vkGetSwapchainGrallocUsage2ANDROID.
             typedef VkResult(VKAPI_PTR *
@@ -819,7 +925,7 @@
         }
         if (result != VK_SUCCESS) {
             ALOGE("vkGetSwapchainGrallocUsage2ANDROID failed: %d", result);
-            return VK_ERROR_INITIALIZATION_FAILED;
+            return VK_ERROR_SURFACE_LOST_KHR;
         }
         // TODO: This is the same translation done by Gralloc1On0Adapter.
         // Remove it once ANativeWindow has been updated to take gralloc1-style
@@ -832,7 +938,7 @@
             &gralloc_usage);
         if (result != VK_SUCCESS) {
             ALOGE("vkGetSwapchainGrallocUsageANDROID failed: %d", result);
-            return VK_ERROR_INITIALIZATION_FAILED;
+            return VK_ERROR_SURFACE_LOST_KHR;
         }
     }
     err = native_window_set_usage(surface.window.get(), gralloc_usage);
@@ -840,18 +946,7 @@
         // TODO(jessehall): Improve error reporting. Can we enumerate possible
         // errors and translate them to valid Vulkan result codes?
         ALOGE("native_window_set_usage failed: %s (%d)", strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
-    }
-
-    int swap_interval =
-        create_info->presentMode == VK_PRESENT_MODE_MAILBOX_KHR ? 0 : 1;
-    err = surface.window->setSwapInterval(surface.window.get(), swap_interval);
-    if (err != 0) {
-        // TODO(jessehall): Improve error reporting. Can we enumerate possible
-        // errors and translate them to valid Vulkan result codes?
-        ALOGE("native_window->setSwapInterval(%d) failed: %s (%d)",
-              swap_interval, strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     // -- Allocate our Swapchain object --
@@ -910,7 +1005,7 @@
             // TODO(jessehall): Improve error reporting. Can we enumerate
             // possible errors and translate them to valid Vulkan result codes?
             ALOGE("dequeueBuffer[%u] failed: %s (%d)", i, strerror(-err), err);
-            result = VK_ERROR_INITIALIZATION_FAILED;
+            result = VK_ERROR_SURFACE_LOST_KHR;
             break;
         }
         img.buffer = buffer;
@@ -1046,7 +1141,7 @@
         // TODO(jessehall): Improve error reporting. Can we enumerate possible
         // errors and translate them to valid Vulkan result codes?
         ALOGE("dequeueBuffer failed: %s (%d)", strerror(-err), err);
-        return VK_ERROR_INITIALIZATION_FAILED;
+        return VK_ERROR_SURFACE_LOST_KHR;
     }
 
     uint32_t idx;
diff --git a/vulkan/libvulkan/swapchain.h b/vulkan/libvulkan/swapchain.h
index 4d9f18f..976c995 100644
--- a/vulkan/libvulkan/swapchain.h
+++ b/vulkan/libvulkan/swapchain.h
@@ -27,7 +27,7 @@
 VKAPI_ATTR void DestroySurfaceKHR(VkInstance instance, VkSurfaceKHR surface, const VkAllocationCallbacks* allocator);
 VKAPI_ATTR VkResult GetPhysicalDeviceSurfaceSupportKHR(VkPhysicalDevice pdev, uint32_t queue_family, VkSurfaceKHR surface, VkBool32* pSupported);
 VKAPI_ATTR VkResult GetPhysicalDeviceSurfaceCapabilitiesKHR(VkPhysicalDevice pdev, VkSurfaceKHR surface, VkSurfaceCapabilitiesKHR* capabilities);
-VKAPI_ATTR VkResult GetPhysicalDeviceSurfaceFormatsKHR(VkPhysicalDevice pdev, VkSurfaceKHR surface, uint32_t* count, VkSurfaceFormatKHR* formats);
+VKAPI_ATTR VkResult GetPhysicalDeviceSurfaceFormatsKHR(VkPhysicalDevice pdev, VkSurfaceKHR surface_handle, uint32_t* count, VkSurfaceFormatKHR* formats);
 VKAPI_ATTR VkResult GetPhysicalDeviceSurfacePresentModesKHR(VkPhysicalDevice pdev, VkSurfaceKHR surface, uint32_t* count, VkPresentModeKHR* modes);
 VKAPI_ATTR VkResult CreateSwapchainKHR(VkDevice device, const VkSwapchainCreateInfoKHR* create_info, const VkAllocationCallbacks* allocator, VkSwapchainKHR* swapchain_handle);
 VKAPI_ATTR void DestroySwapchainKHR(VkDevice device, VkSwapchainKHR swapchain_handle, const VkAllocationCallbacks* allocator);