Merge "Benchmark: Use threadpool for multiple iterations" am: 7783c5b98b am: e23dafe500 am: 82d668f448 am: 0455ce9804

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1723081

Change-Id: I4a3daaeeeb1503d24f1b13177130e541d95da5dd
diff --git a/cmds/screenrecord/screenrecord.cpp b/cmds/screenrecord/screenrecord.cpp
index e6e3473..cd8fe97 100644
--- a/cmds/screenrecord/screenrecord.cpp
+++ b/cmds/screenrecord/screenrecord.cpp
@@ -1067,7 +1067,7 @@
 
     std::optional<PhysicalDisplayId> displayId = SurfaceComposerClient::getInternalDisplayId();
     if (!displayId) {
-        fprintf(stderr, "Failed to get token for internal display\n");
+        fprintf(stderr, "Failed to get ID for internal display\n");
         return 1;
     }
 
@@ -1168,17 +1168,14 @@
             }
             break;
         case 'd':
-            gPhysicalDisplayId = PhysicalDisplayId(atoll(optarg));
-            if (gPhysicalDisplayId.value == 0) {
-                fprintf(stderr, "Please specify a valid physical display id\n");
-                return 2;
-            } else if (SurfaceComposerClient::
-                    getPhysicalDisplayToken(gPhysicalDisplayId) == nullptr) {
-                fprintf(stderr, "Invalid physical display id: %s\n",
-                        to_string(gPhysicalDisplayId).c_str());
-                return 2;
+            if (const auto id = android::DisplayId::fromValue<PhysicalDisplayId>(atoll(optarg));
+                id && SurfaceComposerClient::getPhysicalDisplayToken(*id)) {
+                gPhysicalDisplayId = *id;
+                break;
             }
-            break;
+
+            fprintf(stderr, "Invalid physical display ID\n");
+            return 2;
         default:
             if (ic != '?') {
                 fprintf(stderr, "getopt_long returned unexpected value 0x%x\n", ic);
diff --git a/drm/mediadrm/plugins/TEST_MAPPING b/drm/mediadrm/plugins/TEST_MAPPING
index 7bd1568..87becb6 100644
--- a/drm/mediadrm/plugins/TEST_MAPPING
+++ b/drm/mediadrm/plugins/TEST_MAPPING
@@ -11,6 +11,9 @@
         },
         {
           "include-filter": "android.media.cts.MediaDrmMetricsTest"
+        },
+        {
+          "include-filter": "android.media.cts.NativeMediaDrmClearkeyTest"
         }
       ]
     }
diff --git a/drm/mediadrm/plugins/clearkey/hidl/DrmPlugin.cpp b/drm/mediadrm/plugins/clearkey/hidl/DrmPlugin.cpp
index 6a374f9..0cd9375 100644
--- a/drm/mediadrm/plugins/clearkey/hidl/DrmPlugin.cpp
+++ b/drm/mediadrm/plugins/clearkey/hidl/DrmPlugin.cpp
@@ -221,7 +221,6 @@
         if (requestString.find(kOfflineLicense) != std::string::npos) {
             std::string emptyResponse;
             std::string keySetIdString(keySetId.begin(), keySetId.end());
-            Mutex::Autolock lock(mFileHandleLock);
             if (!mFileHandle.StoreLicense(keySetIdString,
                     DeviceFiles::kLicenseStateReleasing,
                     emptyResponse)) {
@@ -337,7 +336,6 @@
         }
         *keySetId = kKeySetIdPrefix + ByteArrayToHexString(
                 reinterpret_cast<const uint8_t*>(randomData.data()), randomData.size());
-        Mutex::Autolock lock(mFileHandleLock);
         if (mFileHandle.LicenseExists(*keySetId)) {
             // collision, regenerate
             ALOGV("Retry generating KeySetId");
@@ -395,7 +393,6 @@
     if (status == Status::OK) {
         if (isOfflineLicense) {
             if (isRelease) {
-                Mutex::Autolock lock(mFileHandleLock);
                 mFileHandle.DeleteLicense(keySetId);
                 mSessionLibrary->destroySession(session);
             } else {
@@ -404,7 +401,6 @@
                     return Void();
                 }
 
-                Mutex::Autolock lock(mFileHandleLock);
                 bool ok = mFileHandle.StoreLicense(
                         keySetId,
                         DeviceFiles::kLicenseStateActive,
@@ -459,7 +455,6 @@
         DeviceFiles::LicenseState licenseState;
         std::string offlineLicense;
         Status status = Status::OK;
-        Mutex::Autolock lock(mFileHandleLock);
         if (!mFileHandle.RetrieveLicense(std::string(keySetId.begin(), keySetId.end()),
                 &licenseState, &offlineLicense)) {
             ALOGE("Failed to restore offline license");
@@ -769,8 +764,6 @@
 }
 
 Return<void> DrmPlugin::getOfflineLicenseKeySetIds(getOfflineLicenseKeySetIds_cb _hidl_cb) {
-    Mutex::Autolock lock(mFileHandleLock);
-
     std::vector<std::string> licenseNames = mFileHandle.ListLicenses();
     std::vector<KeySetId> keySetIds;
     if (mMockError != Status_V1_2::OK) {
@@ -791,7 +784,6 @@
         return toStatus_1_0(mMockError);
     }
     std::string licenseName(keySetId.begin(), keySetId.end());
-    Mutex::Autolock lock(mFileHandleLock);
     if (mFileHandle.DeleteLicense(licenseName)) {
         return Status::OK;
     }
@@ -800,8 +792,6 @@
 
 Return<void> DrmPlugin::getOfflineLicenseState(const KeySetId& keySetId,
         getOfflineLicenseState_cb _hidl_cb) {
-    Mutex::Autolock lock(mFileHandleLock);
-
     std::string licenseName(keySetId.begin(), keySetId.end());
     DeviceFiles::LicenseState state;
     std::string license;
diff --git a/drm/mediadrm/plugins/clearkey/hidl/MemoryFileSystem.cpp b/drm/mediadrm/plugins/clearkey/hidl/MemoryFileSystem.cpp
index e61db3f..56910be 100644
--- a/drm/mediadrm/plugins/clearkey/hidl/MemoryFileSystem.cpp
+++ b/drm/mediadrm/plugins/clearkey/hidl/MemoryFileSystem.cpp
@@ -24,13 +24,11 @@
 }
 
 bool MemoryFileSystem::FileExists(const std::string& fileName) const {
-    std::lock_guard<std::mutex> lock(mMemoryFileSystemLock);
     auto result = mMemoryFileSystem.find(fileName);
     return result != mMemoryFileSystem.end();
 }
 
 ssize_t MemoryFileSystem::GetFileSize(const std::string& fileName) const {
-    std::lock_guard<std::mutex> lock(mMemoryFileSystemLock);
     auto result = mMemoryFileSystem.find(fileName);
     if (result != mMemoryFileSystem.end()) {
         return static_cast<ssize_t>(result->second.getFileSize());
@@ -42,7 +40,6 @@
 
 std::vector<std::string> MemoryFileSystem::ListFiles() const {
     std::vector<std::string> list;
-    std::lock_guard<std::mutex> lock(mMemoryFileSystemLock);
     for (const auto& filename : mMemoryFileSystem) {
         list.push_back(filename.first);
     }
@@ -51,7 +48,6 @@
 
 size_t MemoryFileSystem::Read(const std::string& path, std::string* buffer) {
     std::string key = GetFileName(path);
-    std::lock_guard<std::mutex> lock(mMemoryFileSystemLock);
     auto result = mMemoryFileSystem.find(key);
     if (result != mMemoryFileSystem.end()) {
         std::string serializedHashFile = result->second.getContent();
@@ -65,7 +61,6 @@
 
 size_t MemoryFileSystem::Write(const std::string& path, const MemoryFile& memoryFile) {
     std::string key = GetFileName(path);
-    std::lock_guard<std::mutex> lock(mMemoryFileSystemLock);
     auto result = mMemoryFileSystem.find(key);
     if (result != mMemoryFileSystem.end()) {
         mMemoryFileSystem.erase(key);
@@ -75,7 +70,6 @@
 }
 
 bool MemoryFileSystem::RemoveFile(const std::string& fileName) {
-    std::lock_guard<std::mutex> lock(mMemoryFileSystemLock);
     auto result = mMemoryFileSystem.find(fileName);
     if (result != mMemoryFileSystem.end()) {
         mMemoryFileSystem.erase(result);
@@ -87,7 +81,6 @@
 }
 
 bool MemoryFileSystem::RemoveAllFiles() {
-    std::lock_guard<std::mutex> lock(mMemoryFileSystemLock);
     mMemoryFileSystem.clear();
     return mMemoryFileSystem.empty();
 }
diff --git a/drm/mediadrm/plugins/clearkey/hidl/include/DrmPlugin.h b/drm/mediadrm/plugins/clearkey/hidl/include/DrmPlugin.h
index 5d6e3da..cb5c9fe 100644
--- a/drm/mediadrm/plugins/clearkey/hidl/include/DrmPlugin.h
+++ b/drm/mediadrm/plugins/clearkey/hidl/include/DrmPlugin.h
@@ -432,8 +432,7 @@
         mMockError = Status_V1_2::OK;
     }
 
-    DeviceFiles mFileHandle GUARDED_BY(mFileHandleLock);
-    Mutex mFileHandleLock;
+    DeviceFiles mFileHandle;
     Mutex mSecureStopLock;
 
     CLEARKEY_DISALLOW_COPY_AND_ASSIGN_AND_NEW(DrmPlugin);
diff --git a/drm/mediadrm/plugins/clearkey/hidl/include/MemoryFileSystem.h b/drm/mediadrm/plugins/clearkey/hidl/include/MemoryFileSystem.h
index a90d818..1d98860 100644
--- a/drm/mediadrm/plugins/clearkey/hidl/include/MemoryFileSystem.h
+++ b/drm/mediadrm/plugins/clearkey/hidl/include/MemoryFileSystem.h
@@ -5,9 +5,7 @@
 #ifndef CLEARKEY_MEMORY_FILE_SYSTEM_H_
 #define CLEARKEY_MEMORY_FILE_SYSTEM_H_
 
-#include <android-base/thread_annotations.h>
 #include <map>
-#include <mutex>
 #include <string>
 
 #include "ClearKeyTypes.h"
@@ -51,12 +49,10 @@
     size_t Write(const std::string& pathName, const MemoryFile& memoryFile);
 
  private:
-    mutable std::mutex mMemoryFileSystemLock;
-
     // License file name is made up of a unique keySetId, therefore,
     // the filename can be used as the key to locate licenses in the
     // memory file system.
-    std::map<std::string, MemoryFile> mMemoryFileSystem GUARDED_BY(mMemoryFileSystemLock);
+    std::map<std::string, MemoryFile> mMemoryFileSystem;
 
     std::string GetFileName(const std::string& path);
 
diff --git a/media/codec2/components/gav1/C2SoftGav1Dec.cpp b/media/codec2/components/gav1/C2SoftGav1Dec.cpp
index 2fa4f25..ff59490 100644
--- a/media/codec2/components/gav1/C2SoftGav1Dec.cpp
+++ b/media/codec2/components/gav1/C2SoftGav1Dec.cpp
@@ -26,6 +26,11 @@
 #include <media/stagefright/foundation/MediaDefs.h>
 
 namespace android {
+namespace {
+
+constexpr uint8_t NEUTRAL_UV_VALUE = 128;
+
+}  // namespace
 
 // codecname set and passed in as a compile flag from Android.bp
 constexpr char COMPONENT_NAME[] = CODECNAME;
@@ -51,8 +56,8 @@
         DefineParam(mSize, C2_PARAMKEY_PICTURE_SIZE)
             .withDefault(new C2StreamPictureSizeInfo::output(0u, 320, 240))
             .withFields({
-                C2F(mSize, width).inRange(2, 2048, 2),
-                C2F(mSize, height).inRange(2, 2048, 2),
+                C2F(mSize, width).inRange(2, 4096, 2),
+                C2F(mSize, height).inRange(2, 4096, 2),
             })
             .withSetter(SizeSetter)
             .build());
@@ -464,7 +469,8 @@
                                         const uint8_t *srcY, const uint8_t *srcU, const uint8_t *srcV,
                                         size_t srcYStride, size_t srcUStride, size_t srcVStride,
                                         size_t dstYStride, size_t dstUVStride,
-                                        uint32_t width, uint32_t height) {
+                                        uint32_t width, uint32_t height,
+                                        bool isMonochrome) {
 
   for (size_t i = 0; i < height; ++i) {
     memcpy(dstY, srcY, width);
@@ -472,6 +478,17 @@
     dstY += dstYStride;
   }
 
+  if (isMonochrome) {
+    // Fill with neutral U/V values.
+    for (size_t i = 0; i < height / 2; ++i) {
+      memset(dstV, NEUTRAL_UV_VALUE, width / 2);
+      memset(dstU, NEUTRAL_UV_VALUE, width / 2);
+      dstV += dstUVStride;
+      dstU += dstUVStride;
+    }
+    return;
+  }
+
   for (size_t i = 0; i < height / 2; ++i) {
     memcpy(dstV, srcV, width / 2);
     srcV += srcVStride;
@@ -557,7 +574,7 @@
     const uint16_t *srcY, const uint16_t *srcU, const uint16_t *srcV,
     size_t srcYStride, size_t srcUStride, size_t srcVStride,
     size_t dstYStride, size_t dstUVStride,
-    size_t width, size_t height) {
+    size_t width, size_t height, bool isMonochrome) {
 
   for (size_t y = 0; y < height; ++y) {
     for (size_t x = 0; x < width; ++x) {
@@ -568,6 +585,17 @@
     dstY += dstYStride;
   }
 
+  if (isMonochrome) {
+    // Fill with neutral U/V values.
+    for (size_t y = 0; y < (height + 1) / 2; ++y) {
+      memset(dstV, NEUTRAL_UV_VALUE, (width + 1) / 2);
+      memset(dstU, NEUTRAL_UV_VALUE, (width + 1) / 2);
+      dstV += dstUVStride;
+      dstU += dstUVStride;
+    }
+    return;
+  }
+
   for (size_t y = 0; y < (height + 1) / 2; ++y) {
     for (size_t x = 0; x < (width + 1) / 2; ++x) {
       dstU[x] = (uint8_t)(srcU[x] >> 2);
@@ -623,8 +651,10 @@
     }
   }
 
-  // TODO(vigneshv): Add support for monochrome videos since AV1 supports it.
-  CHECK(buffer->image_format == libgav1::kImageFormatYuv420);
+  CHECK(buffer->image_format == libgav1::kImageFormatYuv420 ||
+        buffer->image_format == libgav1::kImageFormatMonochrome400);
+  const bool isMonochrome =
+      buffer->image_format == libgav1::kImageFormatMonochrome400;
 
   std::shared_ptr<C2GraphicBlock> block;
   uint32_t format = HAL_PIXEL_FORMAT_YV12;
@@ -636,6 +666,13 @@
     if (defaultColorAspects->primaries == C2Color::PRIMARIES_BT2020 &&
         defaultColorAspects->matrix == C2Color::MATRIX_BT2020 &&
         defaultColorAspects->transfer == C2Color::TRANSFER_ST2084) {
+      if (buffer->image_format != libgav1::kImageFormatYuv420) {
+        ALOGE("Only YUV420 output is supported when targeting RGBA_1010102");
+        mSignalledError = true;
+        work->result = C2_OMITTED;
+        work->workletsProcessed = 1u;
+        return false;
+      }
       format = HAL_PIXEL_FORMAT_RGBA_1010102;
     }
   }
@@ -682,21 +719,18 @@
           (uint32_t *)dstY, srcY, srcU, srcV, srcYStride / 2, srcUStride / 2,
           srcVStride / 2, dstYStride / sizeof(uint32_t), mWidth, mHeight);
     } else {
-      convertYUV420Planar16ToYUV420Planar(dstY, dstU, dstV,
-                                          srcY, srcU, srcV,
-                                          srcYStride / 2, srcUStride / 2, srcVStride / 2,
-                                          dstYStride, dstUVStride,
-                                          mWidth, mHeight);
+      convertYUV420Planar16ToYUV420Planar(
+          dstY, dstU, dstV, srcY, srcU, srcV, srcYStride / 2, srcUStride / 2,
+          srcVStride / 2, dstYStride, dstUVStride, mWidth, mHeight,
+          isMonochrome);
     }
   } else {
     const uint8_t *srcY = (const uint8_t *)buffer->plane[0];
     const uint8_t *srcU = (const uint8_t *)buffer->plane[1];
     const uint8_t *srcV = (const uint8_t *)buffer->plane[2];
-    copyOutputBufferToYV12Frame(dstY, dstU, dstV,
-                                srcY, srcU, srcV,
-                                srcYStride, srcUStride, srcVStride,
-                                dstYStride, dstUVStride,
-                                mWidth, mHeight);
+    copyOutputBufferToYV12Frame(
+        dstY, dstU, dstV, srcY, srcU, srcV, srcYStride, srcUStride, srcVStride,
+        dstYStride, dstUVStride, mWidth, mHeight, isMonochrome);
   }
   finishWork(buffer->user_private_data, work, std::move(block));
   block = nullptr;
diff --git a/media/libaaudio/src/Android.bp b/media/libaaudio/src/Android.bp
index 33a5c7f..cb08b1c 100644
--- a/media/libaaudio/src/Android.bp
+++ b/media/libaaudio/src/Android.bp
@@ -7,6 +7,65 @@
     default_applicable_licenses: ["frameworks_av_license"],
 }
 
+tidy_errors = [
+    // https://clang.llvm.org/extra/clang-tidy/checks/list.html
+    // For many categories, the checks are too many to specify individually.
+    // Feel free to disable as needed - as warnings are generally ignored,
+    // we treat warnings as errors.
+    "android-*",
+    "bugprone-*",
+    "cert-*",
+    "clang-analyzer-security*",
+    "google-*",
+    "misc-*",
+    //"modernize-*",  // explicitly list the modernize as they can be subjective.
+    "modernize-avoid-bind",
+    //"modernize-avoid-c-arrays", // std::array<> can be verbose
+    "modernize-concat-nested-namespaces",
+    //"modernize-deprecated-headers", // C headers still ok even if there is C++ equivalent.
+    "modernize-deprecated-ios-base-aliases",
+    "modernize-loop-convert",
+    "modernize-make-shared",
+    "modernize-make-unique",
+    "modernize-pass-by-value",
+    "modernize-raw-string-literal",
+    "modernize-redundant-void-arg",
+    "modernize-replace-auto-ptr",
+    "modernize-replace-random-shuffle",
+    "modernize-return-braced-init-list",
+    "modernize-shrink-to-fit",
+    "modernize-unary-static-assert",
+    // "modernize-use-auto", // found in AAudioAudio.cpp
+    "modernize-use-bool-literals",
+    "modernize-use-default-member-init",
+    "modernize-use-emplace",
+    "modernize-use-equals-default",
+    "modernize-use-equals-delete",
+    // "modernize-use-nodiscard", // found in aidl generated files
+    "modernize-use-noexcept",
+    "modernize-use-nullptr",
+    // "modernize-use-override", // found in aidl generated files
+    // "modernize-use-trailing-return-type", // not necessarily more readable
+    "modernize-use-transparent-functors",
+    "modernize-use-uncaught-exceptions",
+    // "modernize-use-using", // found typedef in several files
+    "performance-*",
+
+    // Remove some pedantic stylistic requirements.
+    "-android-cloexec-dup", // found in SharedMemoryParcelable.cpp
+    "-bugprone-macro-parentheses", // found in SharedMemoryParcelable.h
+    "-bugprone-narrowing-conversions", // found in several interface from size_t to int32_t
+
+    "-google-readability-casting", // C++ casts not always necessary and may be verbose
+    "-google-readability-todo", // do not require TODO(info)
+    "-google-build-using-namespace", // Reenable and fix later.
+    "-google-global-names-in-headers", // found in several files
+
+    "-misc-non-private-member-variables-in-classes", // found in aidl generated files
+
+    "-performance-no-int-to-ptr", // found in SharedMemoryParcelable.h
+]
+
 cc_library {
     name: "libaaudio",
 
@@ -52,7 +111,7 @@
         "libcutils",
         "libutils",
         "libbinder",
-        "libpermission",
+        "framework-permission-aidl-cpp",
     ],
 
     sanitize: {
@@ -64,6 +123,13 @@
         symbol_file: "libaaudio.map.txt",
         versions: ["28"],
     },
+
+    tidy: true,
+    tidy_checks: tidy_errors,
+    tidy_checks_as_errors: tidy_errors,
+    tidy_flags: [
+        "-format-style=file",
+    ]
 }
 
 cc_library {
@@ -156,6 +222,13 @@
         integer_overflow: true,
         misc_undefined: ["bounds"],
     },
+
+    tidy: true,
+    tidy_checks: tidy_errors,
+    tidy_checks_as_errors: tidy_errors,
+    tidy_flags: [
+        "-format-style=file",
+    ]
 }
 
 aidl_interface {
@@ -172,19 +245,14 @@
         "binding/aidl/aaudio/IAAudioService.aidl",
     ],
     imports: [
-        "audio_common-aidl",
+        "audioclient-types-aidl",
         "shared-file-region-aidl",
-        "framework-permission-aidl"
+        "framework-permission-aidl",
     ],
     backend:
     {
-        cpp: {
-            enabled: true,
-        },
         java: {
-            // TODO: need to have audio_common-aidl available in Java to enable
-            //       this.
-            enabled: false,
+            sdk_version: "module_current",
         },
     },
 }
diff --git a/media/libaaudio/src/binding/AAudioBinderClient.cpp b/media/libaaudio/src/binding/AAudioBinderClient.cpp
index fa5a2da..135bac3 100644
--- a/media/libaaudio/src/binding/AAudioBinderClient.cpp
+++ b/media/libaaudio/src/binding/AAudioBinderClient.cpp
@@ -36,13 +36,10 @@
 using android::IServiceManager;
 using android::defaultServiceManager;
 using android::interface_cast;
-using android::IInterface;
 using android::Mutex;
 using android::ProcessState;
 using android::sp;
 using android::status_t;
-using android::wp;
-using android::binder::Status;
 
 using namespace aaudio;
 
@@ -93,7 +90,7 @@
                     ALOGE("%s() - linkToDeath() returned %d", __func__, status);
                 }
                 aaudioService = interface_cast<IAAudioService>(binder);
-                mAdapter.reset(new Adapter(aaudioService, mAAudioClient));
+                mAdapter = std::make_shared<Adapter>(aaudioService, mAAudioClient);
                 needToRegister = true;
                 // Make sure callbacks can be received by mAAudioClient
                 ProcessState::self()->startThreadPool();
diff --git a/media/libaaudio/src/binding/AAudioBinderClient.h b/media/libaaudio/src/binding/AAudioBinderClient.h
index 6a7b639..557ced5 100644
--- a/media/libaaudio/src/binding/AAudioBinderClient.h
+++ b/media/libaaudio/src/binding/AAudioBinderClient.h
@@ -108,7 +108,7 @@
         return AAUDIO_ERROR_UNAVAILABLE;
     }
 
-    void onStreamChange(aaudio_handle_t handle, int32_t opcode, int32_t value) {
+    void onStreamChange(aaudio_handle_t /*handle*/, int32_t /*opcode*/, int32_t /*value*/) {
         // TODO This is just a stub so we can have a client Binder to pass to the service.
         // TODO Implemented in a later CL.
         ALOGW("onStreamChange called!");
@@ -116,7 +116,7 @@
 
     class AAudioClient : public android::IBinder::DeathRecipient, public BnAAudioClient {
     public:
-        AAudioClient(android::wp<AAudioBinderClient> aaudioBinderClient)
+        explicit AAudioClient(const android::wp<AAudioBinderClient>& aaudioBinderClient)
                 : mBinderClient(aaudioBinderClient) {
         }
 
@@ -150,10 +150,10 @@
     class Adapter : public AAudioBinderAdapter {
     public:
         Adapter(const android::sp<IAAudioService>& delegate,
-                const android::sp<AAudioClient>& aaudioClient)
+                android::sp<AAudioClient> aaudioClient)
                 : AAudioBinderAdapter(delegate.get()),
                   mDelegate(delegate),
-                  mAAudioClient(aaudioClient) {}
+                  mAAudioClient(std::move(aaudioClient)) {}
 
         virtual ~Adapter() {
             if (mDelegate != nullptr) {
diff --git a/media/libaaudio/src/binding/AAudioServiceInterface.h b/media/libaaudio/src/binding/AAudioServiceInterface.h
index 5d11512..bf94774 100644
--- a/media/libaaudio/src/binding/AAudioServiceInterface.h
+++ b/media/libaaudio/src/binding/AAudioServiceInterface.h
@@ -37,7 +37,7 @@
 class AAudioServiceInterface {
 public:
 
-    AAudioServiceInterface() {};
+    AAudioServiceInterface() = default;
     virtual ~AAudioServiceInterface() = default;
 
     virtual void registerClient(const android::sp<IAAudioClient>& client) = 0;
diff --git a/media/libaaudio/src/binding/AAudioStreamConfiguration.cpp b/media/libaaudio/src/binding/AAudioStreamConfiguration.cpp
index 2d501ef..f28e0d6 100644
--- a/media/libaaudio/src/binding/AAudioStreamConfiguration.cpp
+++ b/media/libaaudio/src/binding/AAudioStreamConfiguration.cpp
@@ -27,7 +27,7 @@
 
 using namespace aaudio;
 
-using android::media::audio::common::AudioFormat;
+using android::media::AudioFormatSys;
 
 AAudioStreamConfiguration::AAudioStreamConfiguration(const StreamParameters& parcelable) {
     setSamplesPerFrame(parcelable.samplesPerFrame);
@@ -69,7 +69,7 @@
     static_assert(sizeof(aaudio_sharing_mode_t) == sizeof(result.sharingMode));
     result.sharingMode = getSharingMode();
     static_assert(sizeof(audio_format_t) == sizeof(result.audioFormat));
-    result.audioFormat = static_cast<AudioFormat>(getFormat());
+    result.audioFormat = static_cast<AudioFormatSys>(getFormat());
     static_assert(sizeof(aaudio_direction_t) == sizeof(result.direction));
     result.direction = getDirection();
     static_assert(sizeof(audio_usage_t) == sizeof(result.usage));
diff --git a/media/libaaudio/src/binding/AAudioStreamRequest.cpp b/media/libaaudio/src/binding/AAudioStreamRequest.cpp
index 8d90034..a4cc2bd 100644
--- a/media/libaaudio/src/binding/AAudioStreamRequest.cpp
+++ b/media/libaaudio/src/binding/AAudioStreamRequest.cpp
@@ -30,7 +30,7 @@
 using namespace aaudio;
 
 AAudioStreamRequest::AAudioStreamRequest(const StreamRequest& parcelable) :
-        mConfiguration(std::move(parcelable.params)),
+        mConfiguration(parcelable.params),
         mAttributionSource(parcelable.attributionSource),
         mSharingModeMatchRequired(parcelable.sharingModeMatchRequired),
         mInService(parcelable.inService) {
@@ -38,7 +38,7 @@
 
 StreamRequest AAudioStreamRequest::parcelable() const {
     StreamRequest result;
-    result.params = std::move(mConfiguration).parcelable();
+    result.params = mConfiguration.parcelable();
     result.attributionSource = mAttributionSource;
     result.sharingModeMatchRequired = mSharingModeMatchRequired;
     result.inService = mInService;
diff --git a/media/libaaudio/src/binding/AudioEndpointParcelable.cpp b/media/libaaudio/src/binding/AudioEndpointParcelable.cpp
index aa4ac27..dea3e4a 100644
--- a/media/libaaudio/src/binding/AudioEndpointParcelable.cpp
+++ b/media/libaaudio/src/binding/AudioEndpointParcelable.cpp
@@ -29,17 +29,15 @@
 #include "binding/AudioEndpointParcelable.h"
 
 using android::base::unique_fd;
-using android::media::SharedFileRegion;
-using android::NO_ERROR;
 using android::status_t;
 
 using namespace aaudio;
 
 AudioEndpointParcelable::AudioEndpointParcelable(Endpoint&& parcelable)
-        : mUpMessageQueueParcelable(std::move(parcelable.upMessageQueueParcelable)),
-          mDownMessageQueueParcelable(std::move(parcelable.downMessageQueueParcelable)),
-          mUpDataQueueParcelable(std::move(parcelable.upDataQueueParcelable)),
-          mDownDataQueueParcelable(std::move(parcelable.downDataQueueParcelable)),
+        : mUpMessageQueueParcelable(parcelable.upMessageQueueParcelable),
+          mDownMessageQueueParcelable(parcelable.downMessageQueueParcelable),
+          mUpDataQueueParcelable(parcelable.upDataQueueParcelable),
+          mDownDataQueueParcelable(parcelable.downDataQueueParcelable),
           mNumSharedMemories(parcelable.sharedMemories.size()) {
     for (size_t i = 0; i < parcelable.sharedMemories.size() && i < MAX_SHARED_MEMORIES; ++i) {
         // Re-construct.
@@ -56,10 +54,10 @@
 
 Endpoint AudioEndpointParcelable::parcelable()&& {
     Endpoint result;
-    result.upMessageQueueParcelable = std::move(mUpMessageQueueParcelable).parcelable();
-    result.downMessageQueueParcelable = std::move(mDownMessageQueueParcelable).parcelable();
-    result.upDataQueueParcelable = std::move(mUpDataQueueParcelable).parcelable();
-    result.downDataQueueParcelable = std::move(mDownDataQueueParcelable).parcelable();
+    result.upMessageQueueParcelable = mUpMessageQueueParcelable.parcelable();
+    result.downMessageQueueParcelable = mDownMessageQueueParcelable.parcelable();
+    result.upDataQueueParcelable = mUpDataQueueParcelable.parcelable();
+    result.downDataQueueParcelable = mDownDataQueueParcelable.parcelable();
     result.sharedMemories.reserve(std::min(mNumSharedMemories, MAX_SHARED_MEMORIES));
     for (size_t i = 0; i < mNumSharedMemories && i < MAX_SHARED_MEMORIES; ++i) {
         result.sharedMemories.emplace_back(std::move(mSharedMemories[i]).parcelable());
diff --git a/media/libaaudio/src/binding/AudioEndpointParcelable.h b/media/libaaudio/src/binding/AudioEndpointParcelable.h
index 5237a1a..544aa92 100644
--- a/media/libaaudio/src/binding/AudioEndpointParcelable.h
+++ b/media/libaaudio/src/binding/AudioEndpointParcelable.h
@@ -43,7 +43,7 @@
     // Ctor/assignment from a parcelable representation.
     // Since the parcelable object owns unique FDs (for shared memory blocks), move semantics are
     // provided to avoid the need to dupe.
-    AudioEndpointParcelable(Endpoint&& parcelable);
+    explicit AudioEndpointParcelable(Endpoint&& parcelable);
     AudioEndpointParcelable& operator=(Endpoint&& parcelable);
 
     /**
diff --git a/media/libaaudio/src/binding/RingBufferParcelable.cpp b/media/libaaudio/src/binding/RingBufferParcelable.cpp
index a4b3cec..fa7ca72 100644
--- a/media/libaaudio/src/binding/RingBufferParcelable.cpp
+++ b/media/libaaudio/src/binding/RingBufferParcelable.cpp
@@ -30,9 +30,9 @@
 using namespace aaudio;
 
 RingBufferParcelable::RingBufferParcelable(const RingBuffer& parcelable)
-        : mReadCounterParcelable(std::move(parcelable.readCounterParcelable)),
-          mWriteCounterParcelable(std::move(parcelable.writeCounterParcelable)),
-          mDataParcelable(std::move(parcelable.dataParcelable)),
+        : mReadCounterParcelable(parcelable.readCounterParcelable),
+          mWriteCounterParcelable(parcelable.writeCounterParcelable),
+          mDataParcelable(parcelable.dataParcelable),
           mBytesPerFrame(parcelable.bytesPerFrame),
           mFramesPerBurst(parcelable.framesPerBurst),
           mCapacityInFrames(parcelable.capacityInFrames),
@@ -42,9 +42,9 @@
 
 RingBuffer RingBufferParcelable::parcelable() const {
     RingBuffer result;
-    result.readCounterParcelable = std::move(mReadCounterParcelable).parcelable();
-    result.writeCounterParcelable = std::move(mWriteCounterParcelable).parcelable();
-    result.dataParcelable = std::move(mDataParcelable).parcelable();
+    result.readCounterParcelable = mReadCounterParcelable.parcelable();
+    result.writeCounterParcelable = mWriteCounterParcelable.parcelable();
+    result.dataParcelable = mDataParcelable.parcelable();
     result.bytesPerFrame = mBytesPerFrame;
     result.framesPerBurst = mFramesPerBurst;
     result.capacityInFrames = mCapacityInFrames;
diff --git a/media/libaaudio/src/binding/SharedMemoryParcelable.cpp b/media/libaaudio/src/binding/SharedMemoryParcelable.cpp
index eef238f..3a49655 100644
--- a/media/libaaudio/src/binding/SharedMemoryParcelable.cpp
+++ b/media/libaaudio/src/binding/SharedMemoryParcelable.cpp
@@ -32,7 +32,6 @@
 #include "binding/SharedMemoryParcelable.h"
 
 using android::base::unique_fd;
-using android::NO_ERROR;
 using android::status_t;
 using android::media::SharedFileRegion;
 
@@ -78,7 +77,7 @@
 }
 
 aaudio_result_t SharedMemoryParcelable::resolveSharedMemory(const unique_fd& fd) {
-    mResolvedAddress = (uint8_t *) mmap(0, mSizeInBytes, PROT_READ | PROT_WRITE,
+    mResolvedAddress = (uint8_t *) mmap(nullptr, mSizeInBytes, PROT_READ | PROT_WRITE,
                                         MAP_SHARED, fd.get(), 0);
     if (mResolvedAddress == MMAP_UNRESOLVED_ADDRESS) {
         ALOGE("mmap() failed for fd = %d, nBytes = %" PRId64 ", errno = %s",
diff --git a/media/libaaudio/src/binding/SharedRegionParcelable.cpp b/media/libaaudio/src/binding/SharedRegionParcelable.cpp
index 56b99c0..6fa109b 100644
--- a/media/libaaudio/src/binding/SharedRegionParcelable.cpp
+++ b/media/libaaudio/src/binding/SharedRegionParcelable.cpp
@@ -29,10 +29,7 @@
 #include "binding/SharedMemoryParcelable.h"
 #include "binding/SharedRegionParcelable.h"
 
-using android::NO_ERROR;
 using android::status_t;
-using android::Parcel;
-using android::Parcelable;
 
 using namespace aaudio;
 
diff --git a/media/libaaudio/src/binding/aidl/aaudio/StreamParameters.aidl b/media/libaaudio/src/binding/aidl/aaudio/StreamParameters.aidl
index b7c4f70..d1ba9b3 100644
--- a/media/libaaudio/src/binding/aidl/aaudio/StreamParameters.aidl
+++ b/media/libaaudio/src/binding/aidl/aaudio/StreamParameters.aidl
@@ -16,14 +16,14 @@
 
 package aaudio;
 
-import android.media.audio.common.AudioFormat;
+import android.media.AudioFormatSys;
 
 parcelable StreamParameters {
     int                                       samplesPerFrame;  //      = AAUDIO_UNSPECIFIED;
     int                                       sampleRate;  //           = AAUDIO_UNSPECIFIED;
     int                                       deviceId;  //             = AAUDIO_UNSPECIFIED;
     int /* aaudio_sharing_mode_t */           sharingMode;  //          = AAUDIO_SHARING_MODE_SHARED;
-    AudioFormat                               audioFormat;  //          = AUDIO_FORMAT_DEFAULT;
+    AudioFormatSys                            audioFormat;  //          = AUDIO_FORMAT_DEFAULT;
     int /* aaudio_direction_t */              direction;  //            = AAUDIO_DIRECTION_OUTPUT;
     int /* aaudio_usage_t */                  usage;  //                = AAUDIO_UNSPECIFIED;
     int /* aaudio_content_type_t */           contentType;  //          = AAUDIO_UNSPECIFIED;
diff --git a/media/libaaudio/src/client/AudioEndpoint.cpp b/media/libaaudio/src/client/AudioEndpoint.cpp
index ebc9f2b..24888de 100644
--- a/media/libaaudio/src/client/AudioEndpoint.cpp
+++ b/media/libaaudio/src/client/AudioEndpoint.cpp
@@ -31,13 +31,6 @@
 #define RIDICULOUSLY_LARGE_BUFFER_CAPACITY   (256 * 1024)
 #define RIDICULOUSLY_LARGE_FRAME_SIZE        4096
 
-AudioEndpoint::AudioEndpoint()
-    : mFreeRunning(false)
-    , mDataReadCounter(0)
-    , mDataWriteCounter(0)
-{
-}
-
 // TODO Consider moving to a method in RingBufferDescriptor
 static aaudio_result_t AudioEndpoint_validateQueueDescriptor(const char *type,
                                                   const RingBufferDescriptor *descriptor) {
diff --git a/media/libaaudio/src/client/AudioEndpoint.h b/media/libaaudio/src/client/AudioEndpoint.h
index 4c8d60f..b3dbc20 100644
--- a/media/libaaudio/src/client/AudioEndpoint.h
+++ b/media/libaaudio/src/client/AudioEndpoint.h
@@ -34,7 +34,7 @@
 class AudioEndpoint {
 
 public:
-    AudioEndpoint();
+    AudioEndpoint() = default;
 
     /**
      * Configure based on the EndPointDescriptor_t.
@@ -95,9 +95,9 @@
 private:
     std::unique_ptr<android::FifoBufferIndirect> mUpCommandQueue;
     std::unique_ptr<android::FifoBufferIndirect> mDataQueue;
-    bool                    mFreeRunning;
-    android::fifo_counter_t mDataReadCounter; // only used if free-running
-    android::fifo_counter_t mDataWriteCounter; // only used if free-running
+    bool                    mFreeRunning{false};
+    android::fifo_counter_t mDataReadCounter{0}; // only used if free-running
+    android::fifo_counter_t mDataWriteCounter{0}; // only used if free-running
 };
 
 } // namespace aaudio
diff --git a/media/libaaudio/src/client/AudioStreamInternal.cpp b/media/libaaudio/src/client/AudioStreamInternal.cpp
index cf2abe8..e584425 100644
--- a/media/libaaudio/src/client/AudioStreamInternal.cpp
+++ b/media/libaaudio/src/client/AudioStreamInternal.cpp
@@ -49,8 +49,6 @@
 // This is needed to make sense of the logs more easily.
 #define LOG_TAG (mInService ? "AudioStreamInternal_Service" : "AudioStreamInternal_Client")
 
-using android::Mutex;
-using android::WrappingBuffer;
 using android::content::AttributionSourceState;
 
 using namespace aaudio;
@@ -329,10 +327,10 @@
 {
     AudioStreamInternal *stream = (AudioStreamInternal *)context;
     //LOGD("oboe_callback_thread, stream = %p", stream);
-    if (stream != NULL) {
+    if (stream != nullptr) {
         return stream->callbackLoop();
     } else {
-        return NULL;
+        return nullptr;
     }
 }
 
@@ -421,7 +419,7 @@
     if (isDataCallbackSet()
             && (isActive() || getState() == AAUDIO_STREAM_STATE_DISCONNECTED)) {
         mCallbackEnabled.store(false);
-        aaudio_result_t result = joinThread_l(NULL); // may temporarily unlock mStreamLock
+        aaudio_result_t result = joinThread_l(nullptr); // may temporarily unlock mStreamLock
         if (result == AAUDIO_ERROR_INVALID_HANDLE) {
             ALOGD("%s() INVALID_HANDLE, stream was probably stolen", __func__);
             result = AAUDIO_OK;
@@ -508,7 +506,7 @@
     return result;
 }
 
-aaudio_result_t AudioStreamInternal::getTimestamp(clockid_t clockId,
+aaudio_result_t AudioStreamInternal::getTimestamp(clockid_t /*clockId*/,
                            int64_t *framePosition,
                            int64_t *timeNanoseconds) {
     // Generated in server and passed to client. Return latest.
diff --git a/media/libaaudio/src/client/AudioStreamInternal.h b/media/libaaudio/src/client/AudioStreamInternal.h
index fbe4c13..eab1382 100644
--- a/media/libaaudio/src/client/AudioStreamInternal.h
+++ b/media/libaaudio/src/client/AudioStreamInternal.h
@@ -116,7 +116,7 @@
 
     virtual void prepareBuffersForStart() {}
 
-    virtual void advanceClientToMatchServerPosition(int32_t serverMargin = 0) = 0;
+    virtual void advanceClientToMatchServerPosition(int32_t serverMargin) = 0;
 
     virtual void onFlushFromServer() {}
 
diff --git a/media/libaaudio/src/client/AudioStreamInternalCapture.cpp b/media/libaaudio/src/client/AudioStreamInternalCapture.cpp
index 2da5406..1efccb1 100644
--- a/media/libaaudio/src/client/AudioStreamInternalCapture.cpp
+++ b/media/libaaudio/src/client/AudioStreamInternalCapture.cpp
@@ -46,8 +46,6 @@
 
 }
 
-AudioStreamInternalCapture::~AudioStreamInternalCapture() {}
-
 void AudioStreamInternalCapture::advanceClientToMatchServerPosition(int32_t serverMargin) {
     int64_t readCounter = mAudioEndpoint->getDataReadCounter();
     int64_t writeCounter = mAudioEndpoint->getDataWriteCounter() + serverMargin;
@@ -109,7 +107,7 @@
     if (mNeedCatchUp.isRequested()) {
         // Catch an MMAP pointer that is already advancing.
         // This will avoid initial underruns caused by a slow cold start.
-        advanceClientToMatchServerPosition();
+        advanceClientToMatchServerPosition(0 /*serverMargin*/);
         mNeedCatchUp.acknowledge();
     }
 
@@ -228,7 +226,7 @@
 void *AudioStreamInternalCapture::callbackLoop() {
     aaudio_result_t result = AAUDIO_OK;
     aaudio_data_callback_result_t callbackResult = AAUDIO_CALLBACK_RESULT_CONTINUE;
-    if (!isDataCallbackSet()) return NULL;
+    if (!isDataCallbackSet()) return nullptr;
 
     // result might be a frame count
     while (mCallbackEnabled.load() && isActive() && (result >= 0)) {
@@ -260,5 +258,5 @@
 
     ALOGD("callbackLoop() exiting, result = %d, isActive() = %d",
           result, (int) isActive());
-    return NULL;
+    return nullptr;
 }
diff --git a/media/libaaudio/src/client/AudioStreamInternalCapture.h b/media/libaaudio/src/client/AudioStreamInternalCapture.h
index 251a7f2..87017de 100644
--- a/media/libaaudio/src/client/AudioStreamInternalCapture.h
+++ b/media/libaaudio/src/client/AudioStreamInternalCapture.h
@@ -28,8 +28,9 @@
 
 class AudioStreamInternalCapture : public AudioStreamInternal {
 public:
-    AudioStreamInternalCapture(AAudioServiceInterface  &serviceInterface, bool inService = false);
-    virtual ~AudioStreamInternalCapture();
+    explicit AudioStreamInternalCapture(AAudioServiceInterface  &serviceInterface,
+                                        bool inService = false);
+    virtual ~AudioStreamInternalCapture() = default;
 
     aaudio_result_t read(void *buffer,
                          int32_t numFrames,
@@ -45,7 +46,7 @@
     }
 protected:
 
-    void advanceClientToMatchServerPosition(int32_t serverOffset = 0) override;
+    void advanceClientToMatchServerPosition(int32_t serverOffset) override;
 
 /**
  * Low level data processing that will not block. It will just read or write as much as it can.
diff --git a/media/libaaudio/src/client/AudioStreamInternalPlay.cpp b/media/libaaudio/src/client/AudioStreamInternalPlay.cpp
index 71bde90..5921799 100644
--- a/media/libaaudio/src/client/AudioStreamInternalPlay.cpp
+++ b/media/libaaudio/src/client/AudioStreamInternalPlay.cpp
@@ -44,8 +44,6 @@
 
 }
 
-AudioStreamInternalPlay::~AudioStreamInternalPlay() {}
-
 constexpr int kRampMSec = 10; // time to apply a change in volume
 
 aaudio_result_t AudioStreamInternalPlay::open(const AudioStreamBuilder &builder) {
@@ -115,7 +113,7 @@
 }
 
 void AudioStreamInternalPlay::onFlushFromServer() {
-    advanceClientToMatchServerPosition();
+    advanceClientToMatchServerPosition(0 /*serverMargin*/);
 }
 
 // Write the data, block if needed and timeoutMillis > 0
@@ -281,7 +279,7 @@
     ALOGD("%s() entering >>>>>>>>>>>>>>>", __func__);
     aaudio_result_t result = AAUDIO_OK;
     aaudio_data_callback_result_t callbackResult = AAUDIO_CALLBACK_RESULT_CONTINUE;
-    if (!isDataCallbackSet()) return NULL;
+    if (!isDataCallbackSet()) return nullptr;
     int64_t timeoutNanos = calculateReasonableTimeout(mCallbackFrames);
 
     // result might be a frame count
@@ -309,7 +307,7 @@
 
     ALOGD("%s() exiting, result = %d, isActive() = %d <<<<<<<<<<<<<<",
           __func__, result, (int) isActive());
-    return NULL;
+    return nullptr;
 }
 
 //------------------------------------------------------------------------------
diff --git a/media/libaaudio/src/client/AudioStreamInternalPlay.h b/media/libaaudio/src/client/AudioStreamInternalPlay.h
index 03c957d..e761807 100644
--- a/media/libaaudio/src/client/AudioStreamInternalPlay.h
+++ b/media/libaaudio/src/client/AudioStreamInternalPlay.h
@@ -30,8 +30,9 @@
 
 class AudioStreamInternalPlay : public AudioStreamInternal {
 public:
-    AudioStreamInternalPlay(AAudioServiceInterface  &serviceInterface, bool inService = false);
-    virtual ~AudioStreamInternalPlay();
+    explicit AudioStreamInternalPlay(AAudioServiceInterface  &serviceInterface,
+                                     bool inService = false);
+    virtual ~AudioStreamInternalPlay() = default;
 
     aaudio_result_t open(const AudioStreamBuilder &builder) override;
 
@@ -66,7 +67,7 @@
 
     void prepareBuffersForStart() override;
 
-    void advanceClientToMatchServerPosition(int32_t serverMargin = 0) override;
+    void advanceClientToMatchServerPosition(int32_t serverMargin) override;
 
     void onFlushFromServer() override;
 
diff --git a/media/libaaudio/src/client/IsochronousClockModel.cpp b/media/libaaudio/src/client/IsochronousClockModel.cpp
index f0dcd44..6921271 100644
--- a/media/libaaudio/src/client/IsochronousClockModel.cpp
+++ b/media/libaaudio/src/client/IsochronousClockModel.cpp
@@ -43,14 +43,7 @@
 // and dumped to the log when the stream is stopped.
 
 IsochronousClockModel::IsochronousClockModel()
-        : mMarkerFramePosition(0)
-        , mMarkerNanoTime(0)
-        , mSampleRate(48000)
-        , mFramesPerBurst(48)
-        , mBurstPeriodNanos(0) // this will be updated before use
-        , mMaxMeasuredLatenessNanos(0)
-        , mLatenessForDriftNanos(kInitialLatenessForDriftNanos)
-        , mState(STATE_STOPPED)
+        : mLatenessForDriftNanos(kInitialLatenessForDriftNanos)
 {
     if ((AAudioProperty_getLogMask() & AAUDIO_LOG_CLOCK_MODEL_HISTOGRAM) != 0) {
         mHistogramMicros = std::make_unique<Histogram>(kHistogramBinCount,
diff --git a/media/libaaudio/src/client/IsochronousClockModel.h b/media/libaaudio/src/client/IsochronousClockModel.h
index 6280013..3007237 100644
--- a/media/libaaudio/src/client/IsochronousClockModel.h
+++ b/media/libaaudio/src/client/IsochronousClockModel.h
@@ -149,16 +149,16 @@
     static constexpr int32_t   kHistogramBinWidthMicros = 50;
     static constexpr int32_t   kHistogramBinCount = 128;
 
-    int64_t             mMarkerFramePosition; // Estimated HW position.
-    int64_t             mMarkerNanoTime;      // Estimated HW time.
-    int32_t             mSampleRate;
-    int32_t             mFramesPerBurst;      // number of frames transferred at one time.
-    int32_t             mBurstPeriodNanos;    // Time between HW bursts.
+    int64_t             mMarkerFramePosition{0}; // Estimated HW position.
+    int64_t             mMarkerNanoTime{0};      // Estimated HW time.
+    int32_t             mSampleRate{48000};
+    int32_t             mFramesPerBurst{48};     // number of frames transferred at one time.
+    int32_t             mBurstPeriodNanos{0};    // Time between HW bursts.
     // Includes mBurstPeriodNanos because we sample randomly over time.
-    int32_t             mMaxMeasuredLatenessNanos;
+    int32_t             mMaxMeasuredLatenessNanos{0};
     // Threshold for lateness that triggers a drift later in time.
     int32_t             mLatenessForDriftNanos;
-    clock_model_state_t mState;               // State machine handles startup sequence.
+    clock_model_state_t mState{STATE_STOPPED};   // State machine handles startup sequence.
 
     int32_t             mTimestampCount = 0;  // For logging.
 
diff --git a/media/libaaudio/src/core/AAudioStreamParameters.cpp b/media/libaaudio/src/core/AAudioStreamParameters.cpp
index acfac24..4d84474 100644
--- a/media/libaaudio/src/core/AAudioStreamParameters.cpp
+++ b/media/libaaudio/src/core/AAudioStreamParameters.cpp
@@ -30,9 +30,6 @@
 // HDMI supports up to 32 channels at 1536000 Hz.
 #define SAMPLE_RATE_HZ_MAX           1600000
 
-AAudioStreamParameters::AAudioStreamParameters() {}
-AAudioStreamParameters::~AAudioStreamParameters() {}
-
 void AAudioStreamParameters::copyFrom(const AAudioStreamParameters &other) {
     mSamplesPerFrame      = other.mSamplesPerFrame;
     mSampleRate           = other.mSampleRate;
diff --git a/media/libaaudio/src/core/AAudioStreamParameters.h b/media/libaaudio/src/core/AAudioStreamParameters.h
index 5737052..0349ffc 100644
--- a/media/libaaudio/src/core/AAudioStreamParameters.h
+++ b/media/libaaudio/src/core/AAudioStreamParameters.h
@@ -26,8 +26,8 @@
 
 class AAudioStreamParameters {
 public:
-    AAudioStreamParameters();
-    virtual ~AAudioStreamParameters();
+    AAudioStreamParameters() = default;
+    virtual ~AAudioStreamParameters() = default;
 
     int32_t getDeviceId() const {
         return mDeviceId;
@@ -141,7 +141,7 @@
     }
 
     // TODO b/182392769: reexamine if Identity can be used
-    void setOpPackageName(const std::optional<std::string> opPackageName) {
+    void setOpPackageName(const std::optional<std::string>& opPackageName) {
         mOpPackageName = opPackageName;
     }
 
@@ -149,7 +149,7 @@
         return mAttributionTag;
     }
 
-    void setAttributionTag(const std::optional<std::string> attributionTag) {
+    void setAttributionTag(const std::optional<std::string>& attributionTag) {
         mAttributionTag = attributionTag;
     }
 
diff --git a/media/libaaudio/src/core/AudioGlobal.h b/media/libaaudio/src/core/AudioGlobal.h
index 1e88d15..6c22744 100644
--- a/media/libaaudio/src/core/AudioGlobal.h
+++ b/media/libaaudio/src/core/AudioGlobal.h
@@ -31,7 +31,8 @@
 const char* AudioGlobal_convertResultToText(aaudio_result_t returnCode);
 const char* AudioGlobal_convertSharingModeToText(aaudio_sharing_mode_t mode);
 const char* AudioGlobal_convertStreamStateToText(aaudio_stream_state_t state);
-}
+
+} // namespace aaudio
 
 #endif  // AAUDIO_AUDIOGLOBAL_H
 
diff --git a/media/libaaudio/src/core/AudioStream.h b/media/libaaudio/src/core/AudioStream.h
index 2b45ed3..0068508 100644
--- a/media/libaaudio/src/core/AudioStream.h
+++ b/media/libaaudio/src/core/AudioStream.h
@@ -425,7 +425,7 @@
     // PlayerBase allows the system to control the stream volume.
     class MyPlayerBase : public android::PlayerBase {
     public:
-        MyPlayerBase() {};
+        MyPlayerBase() = default;
 
         virtual ~MyPlayerBase() = default;
 
@@ -554,7 +554,7 @@
      * @param numFrames
      * @return original pointer or the conversion buffer
      */
-    virtual const void * maybeConvertDeviceData(const void *audioData, int32_t numFrames) {
+    virtual const void * maybeConvertDeviceData(const void *audioData, int32_t /*numFrames*/) {
         return audioData;
     }
 
diff --git a/media/libaaudio/src/core/AudioStreamBuilder.cpp b/media/libaaudio/src/core/AudioStreamBuilder.cpp
index e015592..a3e42e9 100644
--- a/media/libaaudio/src/core/AudioStreamBuilder.cpp
+++ b/media/libaaudio/src/core/AudioStreamBuilder.cpp
@@ -53,16 +53,10 @@
 /*
  * AudioStreamBuilder
  */
-AudioStreamBuilder::AudioStreamBuilder() {
-}
-
-AudioStreamBuilder::~AudioStreamBuilder() {
-}
-
 static aaudio_result_t builder_createStream(aaudio_direction_t direction,
-                                         aaudio_sharing_mode_t sharingMode,
-                                         bool tryMMap,
-                                         android::sp<AudioStream> &stream) {
+                                            aaudio_sharing_mode_t /*sharingMode*/,
+                                            bool tryMMap,
+                                            android::sp<AudioStream> &stream) {
     aaudio_result_t result = AAUDIO_OK;
 
     switch (direction) {
diff --git a/media/libaaudio/src/core/AudioStreamBuilder.h b/media/libaaudio/src/core/AudioStreamBuilder.h
index 9f93341..f91c25a 100644
--- a/media/libaaudio/src/core/AudioStreamBuilder.h
+++ b/media/libaaudio/src/core/AudioStreamBuilder.h
@@ -31,9 +31,9 @@
  */
 class AudioStreamBuilder : public AAudioStreamParameters {
 public:
-    AudioStreamBuilder();
+    AudioStreamBuilder() = default;
 
-    ~AudioStreamBuilder();
+    ~AudioStreamBuilder() = default;
 
     bool isSharingModeMatchRequired() const {
         return mSharingModeMatchRequired;
diff --git a/media/libaaudio/src/fifo/FifoBuffer.h b/media/libaaudio/src/fifo/FifoBuffer.h
index 37548f0..7b0aca1 100644
--- a/media/libaaudio/src/fifo/FifoBuffer.h
+++ b/media/libaaudio/src/fifo/FifoBuffer.h
@@ -38,7 +38,7 @@
 
 class FifoBuffer {
 public:
-    FifoBuffer(int32_t bytesPerFrame);
+    explicit FifoBuffer(int32_t bytesPerFrame);
 
     virtual ~FifoBuffer() = default;
 
@@ -162,6 +162,6 @@
     uint8_t *mExternalStorage = nullptr;
 };
 
-}  // android
+}  // namespace android
 
 #endif //FIFO_FIFO_BUFFER_H
diff --git a/media/libaaudio/src/fifo/FifoController.h b/media/libaaudio/src/fifo/FifoController.h
index 057a94e..e15d444 100644
--- a/media/libaaudio/src/fifo/FifoController.h
+++ b/media/libaaudio/src/fifo/FifoController.h
@@ -36,7 +36,7 @@
     , mWriteCounter(0)
     {}
 
-    virtual ~FifoController() {}
+    virtual ~FifoController() = default;
 
     // TODO review use of memory barriers, probably incorrect
     virtual fifo_counter_t getReadCounter() override {
@@ -57,6 +57,6 @@
     std::atomic<fifo_counter_t> mWriteCounter;
 };
 
-}  // android
+}  // namespace android
 
 #endif //FIFO_FIFO_CONTROLLER_H
diff --git a/media/libaaudio/src/fifo/FifoControllerBase.cpp b/media/libaaudio/src/fifo/FifoControllerBase.cpp
index 1dece0e..ad6d041 100644
--- a/media/libaaudio/src/fifo/FifoControllerBase.cpp
+++ b/media/libaaudio/src/fifo/FifoControllerBase.cpp
@@ -29,9 +29,6 @@
 {
 }
 
-FifoControllerBase::~FifoControllerBase() {
-}
-
 fifo_frames_t FifoControllerBase::getFullFramesAvailable() {
     fifo_frames_t temp = 0;
     __builtin_sub_overflow(getWriteCounter(), getReadCounter(), &temp);
diff --git a/media/libaaudio/src/fifo/FifoControllerBase.h b/media/libaaudio/src/fifo/FifoControllerBase.h
index 1edb8a3..2a6173b 100644
--- a/media/libaaudio/src/fifo/FifoControllerBase.h
+++ b/media/libaaudio/src/fifo/FifoControllerBase.h
@@ -43,7 +43,7 @@
      */
     FifoControllerBase(fifo_frames_t capacity, fifo_frames_t threshold);
 
-    virtual ~FifoControllerBase();
+    virtual ~FifoControllerBase() = default;
 
     // Abstract methods to be implemented in subclasses.
     /**
@@ -123,6 +123,6 @@
     fifo_frames_t mThreshold;
 };
 
-}  // android
+}  // namespace android
 
 #endif // FIFO_FIFO_CONTROLLER_BASE_H
diff --git a/media/libaaudio/src/fifo/FifoControllerIndirect.h b/media/libaaudio/src/fifo/FifoControllerIndirect.h
index ec48e57..a59225a 100644
--- a/media/libaaudio/src/fifo/FifoControllerIndirect.h
+++ b/media/libaaudio/src/fifo/FifoControllerIndirect.h
@@ -44,7 +44,7 @@
         setReadCounter(0);
         setWriteCounter(0);
     }
-    virtual ~FifoControllerIndirect() {};
+    virtual ~FifoControllerIndirect() = default;
 
     // TODO review use of memory barriers, probably incorrect
     virtual fifo_counter_t getReadCounter() override {
@@ -68,6 +68,6 @@
     std::atomic<fifo_counter_t> * mWriteCounterAddress;
 };
 
-}  // android
+}  // namespace android
 
 #endif //FIFO_FIFO_CONTROLLER_INDIRECT_H
diff --git a/media/libaaudio/src/flowgraph/AudioProcessorBase.cpp b/media/libaaudio/src/flowgraph/AudioProcessorBase.cpp
index 5667fdb..d8ffd00 100644
--- a/media/libaaudio/src/flowgraph/AudioProcessorBase.cpp
+++ b/media/libaaudio/src/flowgraph/AudioProcessorBase.cpp
@@ -34,8 +34,7 @@
                                int32_t samplesPerFrame,
                                int32_t framesPerBlock)
         : AudioPort(parent, samplesPerFrame)
-        , mFramesPerBlock(framesPerBlock)
-        , mSampleBlock(NULL) {
+        , mFramesPerBlock(framesPerBlock) {
     int32_t numFloats = framesPerBlock * getSamplesPerFrame();
     mSampleBlock = new float[numFloats]{0.0f};
 }
@@ -61,13 +60,13 @@
 
 /***************************************************************************/
 int32_t AudioFloatInputPort::pullData(int64_t framePosition, int32_t numFrames) {
-    return (mConnected == NULL)
+    return (mConnected == nullptr)
             ? std::min(getFramesPerBlock(), numFrames)
             : mConnected->pullData(framePosition, numFrames);
 }
 
 float *AudioFloatInputPort::getBlock() {
-    if (mConnected == NULL) {
+    if (mConnected == nullptr) {
         return AudioFloatBlockPort::getBlock(); // loaded using setValue()
     } else {
         return mConnected->getBlock();
diff --git a/media/libaaudio/src/flowgraph/MonoToMultiConverter.cpp b/media/libaaudio/src/flowgraph/MonoToMultiConverter.cpp
index 78aad52..c6fcac6 100644
--- a/media/libaaudio/src/flowgraph/MonoToMultiConverter.cpp
+++ b/media/libaaudio/src/flowgraph/MonoToMultiConverter.cpp
@@ -26,8 +26,6 @@
         , output(*this, channelCount) {
 }
 
-MonoToMultiConverter::~MonoToMultiConverter() { }
-
 int32_t MonoToMultiConverter::onProcess(int64_t framePosition, int32_t numFrames) {
     int32_t framesToProcess = input.pullData(framePosition, numFrames);
 
diff --git a/media/libaaudio/src/flowgraph/MonoToMultiConverter.h b/media/libaaudio/src/flowgraph/MonoToMultiConverter.h
index 34d53c7..5058ae0 100644
--- a/media/libaaudio/src/flowgraph/MonoToMultiConverter.h
+++ b/media/libaaudio/src/flowgraph/MonoToMultiConverter.h
@@ -29,7 +29,7 @@
 public:
     explicit MonoToMultiConverter(int32_t channelCount);
 
-    virtual ~MonoToMultiConverter();
+    virtual ~MonoToMultiConverter() = default;
 
     int32_t onProcess(int64_t framePosition, int32_t numFrames) override;
 
diff --git a/media/libaaudio/src/flowgraph/RampLinear.cpp b/media/libaaudio/src/flowgraph/RampLinear.cpp
index a260828..0cc32e5 100644
--- a/media/libaaudio/src/flowgraph/RampLinear.cpp
+++ b/media/libaaudio/src/flowgraph/RampLinear.cpp
@@ -37,6 +37,10 @@
 
 void RampLinear::setTarget(float target) {
     mTarget.store(target);
+    // If the ramp has not been used then start immediately at this level.
+    if (mLastFramePosition < 0) {
+        forceCurrent(target);
+    }
 }
 
 float RampLinear::interpolateCurrent() {
diff --git a/media/libaaudio/src/flowgraph/SourceFloat.cpp b/media/libaaudio/src/flowgraph/SourceFloat.cpp
index 4bb674f..5b3a51e 100644
--- a/media/libaaudio/src/flowgraph/SourceFloat.cpp
+++ b/media/libaaudio/src/flowgraph/SourceFloat.cpp
@@ -25,7 +25,7 @@
         : AudioSource(channelCount) {
 }
 
-int32_t SourceFloat::onProcess(int64_t framePosition, int32_t numFrames) {
+int32_t SourceFloat::onProcess(int64_t /*framePosition*/, int32_t numFrames) {
 
     float *outputBuffer = output.getBlock();
     int32_t channelCount = output.getSamplesPerFrame();
diff --git a/media/libaaudio/src/flowgraph/SourceI16.cpp b/media/libaaudio/src/flowgraph/SourceI16.cpp
index c3fcec2..a645cc2 100644
--- a/media/libaaudio/src/flowgraph/SourceI16.cpp
+++ b/media/libaaudio/src/flowgraph/SourceI16.cpp
@@ -30,7 +30,7 @@
         : AudioSource(channelCount) {
 }
 
-int32_t SourceI16::onProcess(int64_t framePosition, int32_t numFrames) {
+int32_t SourceI16::onProcess(int64_t /*framePosition*/, int32_t numFrames) {
     float *floatData = output.getBlock();
     int32_t channelCount = output.getSamplesPerFrame();
 
diff --git a/media/libaaudio/src/flowgraph/SourceI24.cpp b/media/libaaudio/src/flowgraph/SourceI24.cpp
index 097954e..50fb98e 100644
--- a/media/libaaudio/src/flowgraph/SourceI24.cpp
+++ b/media/libaaudio/src/flowgraph/SourceI24.cpp
@@ -32,7 +32,7 @@
         : AudioSource(channelCount) {
 }
 
-int32_t SourceI24::onProcess(int64_t framePosition, int32_t numFrames) {
+int32_t SourceI24::onProcess(int64_t /*framePosition*/, int32_t numFrames) {
     float *floatData = output.getBlock();
     int32_t channelCount = output.getSamplesPerFrame();
 
diff --git a/media/libaaudio/src/flowgraph/SourceI32.cpp b/media/libaaudio/src/flowgraph/SourceI32.cpp
index e8177ad..95bfd8f 100644
--- a/media/libaaudio/src/flowgraph/SourceI32.cpp
+++ b/media/libaaudio/src/flowgraph/SourceI32.cpp
@@ -30,7 +30,7 @@
         : AudioSource(channelCount) {
 }
 
-int32_t SourceI32::onProcess(int64_t framePosition, int32_t numFrames) {
+int32_t SourceI32::onProcess(int64_t /*framePosition*/, int32_t numFrames) {
     float *floatData = output.getBlock();
     int32_t channelCount = output.getSamplesPerFrame();
 
diff --git a/media/libaaudio/src/legacy/AudioStreamLegacy.cpp b/media/libaaudio/src/legacy/AudioStreamLegacy.cpp
index 60eb73a..b6bd0e1 100644
--- a/media/libaaudio/src/legacy/AudioStreamLegacy.cpp
+++ b/media/libaaudio/src/legacy/AudioStreamLegacy.cpp
@@ -37,9 +37,6 @@
         : AudioStream() {
 }
 
-AudioStreamLegacy::~AudioStreamLegacy() {
-}
-
 // Called from AudioTrack.cpp or AudioRecord.cpp
 static void AudioStreamLegacy_callback(int event, void* userData, void *info) {
     AudioStreamLegacy *streamLegacy = (AudioStreamLegacy *) userData;
diff --git a/media/libaaudio/src/legacy/AudioStreamLegacy.h b/media/libaaudio/src/legacy/AudioStreamLegacy.h
index 88ef270..d9ba990 100644
--- a/media/libaaudio/src/legacy/AudioStreamLegacy.h
+++ b/media/libaaudio/src/legacy/AudioStreamLegacy.h
@@ -60,7 +60,7 @@
 public:
     AudioStreamLegacy();
 
-    virtual ~AudioStreamLegacy();
+    virtual ~AudioStreamLegacy() = default;
 
     aaudio_legacy_callback_t getLegacyCallback();
 
diff --git a/media/libaaudio/src/legacy/AudioStreamRecord.cpp b/media/libaaudio/src/legacy/AudioStreamRecord.cpp
index dc66742..20b909a 100644
--- a/media/libaaudio/src/legacy/AudioStreamRecord.cpp
+++ b/media/libaaudio/src/legacy/AudioStreamRecord.cpp
@@ -505,7 +505,7 @@
     return (aaudio_result_t) framesRead;
 }
 
-aaudio_result_t AudioStreamRecord::setBufferSize(int32_t requestedFrames)
+aaudio_result_t AudioStreamRecord::setBufferSize(int32_t /*requestedFrames*/)
 {
     return getBufferSize();
 }
diff --git a/media/libaaudio/src/legacy/AudioStreamTrack.cpp b/media/libaaudio/src/legacy/AudioStreamTrack.cpp
index 1d412c0..62f583c 100644
--- a/media/libaaudio/src/legacy/AudioStreamTrack.cpp
+++ b/media/libaaudio/src/legacy/AudioStreamTrack.cpp
@@ -162,11 +162,11 @@
             callback,
             callbackData,
             notificationFrames,
-            0,       // DEFAULT sharedBuffer*/,
+            nullptr,       // DEFAULT sharedBuffer*/,
             false,   // DEFAULT threadCanCallJava
             sessionId,
             streamTransferType,
-            NULL,    // DEFAULT audio_offload_info_t
+            nullptr,    // DEFAULT audio_offload_info_t
             AttributionSourceState(), // DEFAULT uid and pid
             &attributes,
             // WARNING - If doNotReconnect set true then audio stops after plugging and unplugging
diff --git a/media/libaaudio/src/utility/AAudioUtilities.h b/media/libaaudio/src/utility/AAudioUtilities.h
index 82eb77d..ee8cfd2 100644
--- a/media/libaaudio/src/utility/AAudioUtilities.h
+++ b/media/libaaudio/src/utility/AAudioUtilities.h
@@ -198,7 +198,7 @@
  * @return true if f() eventually returns true.
  */
 static inline bool AAudio_tryUntilTrue(
-        std::function<bool()> f, int times, int sleepMs) {
+        const std::function<bool()>& f, int times, int sleepMs) {
     static const useconds_t US_PER_MS = 1000;
 
     sleepMs = std::max(sleepMs, 0);
@@ -270,9 +270,7 @@
 
 class Timestamp {
 public:
-    Timestamp()
-            : mPosition(0)
-            , mNanoseconds(0) {}
+    Timestamp() = default;
     Timestamp(int64_t position, int64_t nanoseconds)
             : mPosition(position)
             , mNanoseconds(nanoseconds) {}
@@ -283,8 +281,8 @@
 
 private:
     // These cannot be const because we need to implement the copy assignment operator.
-    int64_t mPosition;
-    int64_t mNanoseconds;
+    int64_t mPosition{0};
+    int64_t mNanoseconds{0};
 };
 
 
diff --git a/media/libaaudio/src/utility/FixedBlockAdapter.h b/media/libaaudio/src/utility/FixedBlockAdapter.h
index 4dc7e68..290e473 100644
--- a/media/libaaudio/src/utility/FixedBlockAdapter.h
+++ b/media/libaaudio/src/utility/FixedBlockAdapter.h
@@ -35,7 +35,7 @@
 class FixedBlockAdapter
 {
 public:
-    FixedBlockAdapter(FixedBlockProcessor &fixedBlockProcessor)
+    explicit FixedBlockAdapter(FixedBlockProcessor &fixedBlockProcessor)
     : mFixedBlockProcessor(fixedBlockProcessor) {}
 
     virtual ~FixedBlockAdapter() = default;
diff --git a/media/libaaudio/src/utility/FixedBlockReader.h b/media/libaaudio/src/utility/FixedBlockReader.h
index 128dd52..dc82416 100644
--- a/media/libaaudio/src/utility/FixedBlockReader.h
+++ b/media/libaaudio/src/utility/FixedBlockReader.h
@@ -30,7 +30,7 @@
 class FixedBlockReader : public FixedBlockAdapter
 {
 public:
-    FixedBlockReader(FixedBlockProcessor &fixedBlockProcessor);
+    explicit FixedBlockReader(FixedBlockProcessor &fixedBlockProcessor);
 
     virtual ~FixedBlockReader() = default;
 
diff --git a/media/libaaudio/src/utility/FixedBlockWriter.h b/media/libaaudio/src/utility/FixedBlockWriter.h
index f1d917c..3e89b5d 100644
--- a/media/libaaudio/src/utility/FixedBlockWriter.h
+++ b/media/libaaudio/src/utility/FixedBlockWriter.h
@@ -28,7 +28,7 @@
 class FixedBlockWriter : public FixedBlockAdapter
 {
 public:
-    FixedBlockWriter(FixedBlockProcessor &fixedBlockProcessor);
+    explicit FixedBlockWriter(FixedBlockProcessor &fixedBlockProcessor);
 
     virtual ~FixedBlockWriter() = default;
 
diff --git a/media/libaaudio/src/utility/MonotonicCounter.h b/media/libaaudio/src/utility/MonotonicCounter.h
index 63add4e..313ccbd 100644
--- a/media/libaaudio/src/utility/MonotonicCounter.h
+++ b/media/libaaudio/src/utility/MonotonicCounter.h
@@ -30,8 +30,8 @@
 class MonotonicCounter {
 
 public:
-    MonotonicCounter() {};
-    virtual ~MonotonicCounter() {};
+    MonotonicCounter() = default;
+    virtual ~MonotonicCounter() = default;
 
     /**
      * @return current value of the counter
diff --git a/media/libaaudio/tests/test_flowgraph.cpp b/media/libaaudio/tests/test_flowgraph.cpp
index d563a7e..611cbf7 100644
--- a/media/libaaudio/tests/test_flowgraph.cpp
+++ b/media/libaaudio/tests/test_flowgraph.cpp
@@ -76,31 +76,40 @@
 }
 
 TEST(test_flowgraph, module_ramp_linear) {
+    constexpr int singleNumOutput = 1;
     constexpr int rampSize = 5;
     constexpr int numOutput = 100;
     constexpr float value = 1.0f;
-    constexpr float target = 100.0f;
+    constexpr float initialTarget = 10.0f;
+    constexpr float finalTarget = 100.0f;
+    constexpr float tolerance = 0.0001f; // arbitrary
     float output[numOutput] = {};
     RampLinear rampLinear{1};
     SinkFloat sinkFloat{1};
 
     rampLinear.input.setValue(value);
     rampLinear.setLengthInFrames(rampSize);
-    rampLinear.setTarget(target);
-    rampLinear.forceCurrent(0.0f);
-
     rampLinear.output.connect(&sinkFloat.input);
 
+    // Check that the values go to the initial target instantly.
+    rampLinear.setTarget(initialTarget);
+    int32_t singleNumRead = sinkFloat.read(output, singleNumOutput);
+    ASSERT_EQ(singleNumRead, singleNumOutput);
+    EXPECT_NEAR(value * initialTarget, output[0], tolerance);
+
+    // Now set target and check that the linear ramp works as expected.
+    rampLinear.setTarget(finalTarget);
     int32_t numRead = sinkFloat.read(output, numOutput);
+    const float incrementSize = (finalTarget - initialTarget) / rampSize;
     ASSERT_EQ(numOutput, numRead);
-    constexpr float tolerance = 0.0001f; // arbitrary
+
     int i = 0;
     for (; i < rampSize; i++) {
-        float expected = i * value * target / rampSize;
+        float expected = value * (initialTarget + i * incrementSize);
         EXPECT_NEAR(expected, output[i], tolerance);
     }
     for (; i < numOutput; i++) {
-        float expected = value * target;
+        float expected = value * finalTarget;
         EXPECT_NEAR(expected, output[i], tolerance);
     }
 }
diff --git a/media/libaudioclient/AidlConversion.cpp b/media/libaudioclient/AidlConversion.cpp
index 321e7f9..fa78f43 100644
--- a/media/libaudioclient/AidlConversion.cpp
+++ b/media/libaudioclient/AidlConversion.cpp
@@ -14,6 +14,11 @@
  * limitations under the License.
  */
 
+#include <algorithm>
+#include <unordered_map>
+#include <utility>
+#include <vector>
+
 #define LOG_TAG "AidlConversion"
 //#define LOG_NDEBUG 0
 #include <utils/Log.h>
@@ -21,6 +26,7 @@
 #include "media/AidlConversion.h"
 
 #include <media/ShmemCompat.h>
+#include <media/stagefright/foundation/MediaDefs.h>
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 // Utilities
@@ -273,18 +279,14 @@
             enumToMask_index<int32_t, media::AudioPortConfigType>);
 }
 
-ConversionResult<audio_channel_mask_t> aidl2legacy_int32_t_audio_channel_mask_t(int32_t aidl) {
-    // TODO(ytai): should we convert bit-by-bit?
-    // One problem here is that the representation is both opaque and is different based on the
-    // context (input vs. output). Can determine based on type and role, as per useInChannelMask().
+ConversionResult<audio_channel_mask_t> aidl2legacy_AudioChannelMask_audio_channel_mask_t(
+        media::AudioChannelMask aidl) {
     return convertReinterpret<audio_channel_mask_t>(aidl);
 }
 
-ConversionResult<int32_t> legacy2aidl_audio_channel_mask_t_int32_t(audio_channel_mask_t legacy) {
-    // TODO(ytai): should we convert bit-by-bit?
-    // One problem here is that the representation is both opaque and is different based on the
-    // context (input vs. output). Can determine based on type and role, as per useInChannelMask().
-    return convertReinterpret<int32_t>(legacy);
+ConversionResult<media::AudioChannelMask> legacy2aidl_audio_channel_mask_t_AudioChannelMask(
+        audio_channel_mask_t legacy) {
+    return convertReinterpret<media::AudioChannelMask>(legacy);
 }
 
 ConversionResult<audio_io_config_event> aidl2legacy_AudioIoConfigEvent_audio_io_config_event(
@@ -394,17 +396,641 @@
 }
 
 ConversionResult<audio_format_t> aidl2legacy_AudioFormat_audio_format_t(
-        media::audio::common::AudioFormat aidl) {
-    // This relies on AudioFormat being kept in sync with audio_format_t.
-    static_assert(sizeof(media::audio::common::AudioFormat) == sizeof(audio_format_t));
+        media::AudioFormatSys aidl) {
+    // This relies on AudioFormatSys being kept in sync with audio_format_t.
+    static_assert(sizeof(media::AudioFormatSys) == sizeof(audio_format_t));
     return static_cast<audio_format_t>(aidl);
 }
 
-ConversionResult<media::audio::common::AudioFormat> legacy2aidl_audio_format_t_AudioFormat(
+ConversionResult<media::AudioFormatSys> legacy2aidl_audio_format_t_AudioFormat(
         audio_format_t legacy) {
-    // This relies on AudioFormat being kept in sync with audio_format_t.
-    static_assert(sizeof(media::audio::common::AudioFormat) == sizeof(audio_format_t));
-    return static_cast<media::audio::common::AudioFormat>(legacy);
+    // This relies on AudioFormatSys being kept in sync with audio_format_t.
+    static_assert(sizeof(media::AudioFormatSys) == sizeof(audio_format_t));
+    return static_cast<media::AudioFormatSys>(legacy);
+}
+
+namespace {
+
+namespace detail {
+using AudioDevicePair = std::pair<audio_devices_t, media::AudioDeviceDescription>;
+using AudioDevicePairs = std::vector<AudioDevicePair>;
+using AudioFormatPair = std::pair<audio_format_t, media::AudioFormatDescription>;
+using AudioFormatPairs = std::vector<AudioFormatPair>;
+}
+
+media::AudioDeviceDescription make_AudioDeviceDescription(media::AudioDeviceType type,
+        const std::string& connection = "") {
+    media::AudioDeviceDescription result;
+    result.type = type;
+    result.connection = connection;
+    return result;
+}
+
+void append_AudioDeviceDescription(detail::AudioDevicePairs& pairs,
+        audio_devices_t inputType, audio_devices_t outputType,
+        media::AudioDeviceType inType, media::AudioDeviceType outType,
+        const std::string& connection = "") {
+    pairs.push_back(std::make_pair(inputType, make_AudioDeviceDescription(inType, connection)));
+    pairs.push_back(std::make_pair(outputType, make_AudioDeviceDescription(outType, connection)));
+}
+
+const detail::AudioDevicePairs& getAudioDevicePairs() {
+    static const detail::AudioDevicePairs pairs = []() {
+        detail::AudioDevicePairs pairs = {{
+            {
+                AUDIO_DEVICE_NONE, media::AudioDeviceDescription{}
+            },
+            {
+                AUDIO_DEVICE_OUT_EARPIECE, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_SPEAKER_EARPIECE)
+            },
+            {
+                AUDIO_DEVICE_OUT_SPEAKER, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_SPEAKER)
+            },
+            {
+                AUDIO_DEVICE_OUT_WIRED_HEADPHONE, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_HEADPHONE,
+                        media::AudioDeviceDescription::CONNECTION_ANALOG())
+            },
+            {
+                AUDIO_DEVICE_OUT_BLUETOOTH_SCO, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_DEVICE,
+                        media::AudioDeviceDescription::CONNECTION_BT_SCO())
+            },
+            {
+                AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_CARKIT,
+                        media::AudioDeviceDescription::CONNECTION_BT_SCO())
+            },
+            {
+                AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_HEADPHONE,
+                        media::AudioDeviceDescription::CONNECTION_BT_A2DP())
+            },
+            {
+                AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_SPEAKER,
+                        media::AudioDeviceDescription::CONNECTION_BT_A2DP())
+            },
+            {
+                AUDIO_DEVICE_OUT_TELEPHONY_TX, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_TELEPHONY_TX)
+            },
+            {
+                AUDIO_DEVICE_OUT_AUX_LINE, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_LINE_AUX)
+            },
+            {
+                AUDIO_DEVICE_OUT_SPEAKER_SAFE, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_SPEAKER_SAFE)
+            },
+            {
+                AUDIO_DEVICE_OUT_HEARING_AID, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_HEARING_AID,
+                        media::AudioDeviceDescription::CONNECTION_WIRELESS())
+            },
+            {
+                AUDIO_DEVICE_OUT_ECHO_CANCELLER, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_ECHO_CANCELLER)
+            },
+            {
+                AUDIO_DEVICE_OUT_BLE_SPEAKER, make_AudioDeviceDescription(
+                        media::AudioDeviceType::OUT_SPEAKER,
+                        media::AudioDeviceDescription::CONNECTION_BT_LE())
+            },
+            // AUDIO_DEVICE_IN_AMBIENT and IN_COMMUNICATION are removed since they were deprecated.
+            {
+                AUDIO_DEVICE_IN_BUILTIN_MIC, make_AudioDeviceDescription(
+                        media::AudioDeviceType::IN_MICROPHONE)
+            },
+            {
+                AUDIO_DEVICE_IN_BACK_MIC, make_AudioDeviceDescription(
+                        media::AudioDeviceType::IN_MICROPHONE_BACK)
+            },
+            {
+                AUDIO_DEVICE_IN_TELEPHONY_RX, make_AudioDeviceDescription(
+                        media::AudioDeviceType::IN_TELEPHONY_RX)
+            },
+            {
+                AUDIO_DEVICE_IN_TV_TUNER, make_AudioDeviceDescription(
+                        media::AudioDeviceType::IN_TV_TUNER)
+            },
+            {
+                AUDIO_DEVICE_IN_LOOPBACK, make_AudioDeviceDescription(
+                        media::AudioDeviceType::IN_LOOPBACK)
+            },
+            {
+                AUDIO_DEVICE_IN_BLUETOOTH_BLE, make_AudioDeviceDescription(
+                        media::AudioDeviceType::IN_DEVICE,
+                        media::AudioDeviceDescription::CONNECTION_BT_LE())
+            },
+            {
+                AUDIO_DEVICE_IN_ECHO_REFERENCE, make_AudioDeviceDescription(
+                        media::AudioDeviceType::IN_ECHO_REFERENCE)
+            }
+        }};
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_DEFAULT, AUDIO_DEVICE_OUT_DEFAULT,
+                media::AudioDeviceType::IN_DEFAULT, media::AudioDeviceType::OUT_DEFAULT);
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_WIRED_HEADSET, AUDIO_DEVICE_OUT_WIRED_HEADSET,
+                media::AudioDeviceType::IN_HEADSET, media::AudioDeviceType::OUT_HEADSET,
+                media::AudioDeviceDescription::CONNECTION_ANALOG());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET, AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET,
+                media::AudioDeviceType::IN_HEADSET, media::AudioDeviceType::OUT_HEADSET,
+                media::AudioDeviceDescription::CONNECTION_BT_SCO());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_HDMI, AUDIO_DEVICE_OUT_HDMI,
+                media::AudioDeviceType::IN_DEVICE, media::AudioDeviceType::OUT_DEVICE,
+                media::AudioDeviceDescription::CONNECTION_HDMI());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_REMOTE_SUBMIX, AUDIO_DEVICE_OUT_REMOTE_SUBMIX,
+                media::AudioDeviceType::IN_SUBMIX, media::AudioDeviceType::OUT_SUBMIX);
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET, AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET,
+                media::AudioDeviceType::IN_HEADSET, media::AudioDeviceType::OUT_HEADSET,
+                media::AudioDeviceDescription::CONNECTION_ANALOG_DOCK());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_DGTL_DOCK_HEADSET, AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET,
+                media::AudioDeviceType::IN_HEADSET, media::AudioDeviceType::OUT_HEADSET,
+                media::AudioDeviceDescription::CONNECTION_DIGITAL_DOCK());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_USB_ACCESSORY, AUDIO_DEVICE_OUT_USB_ACCESSORY,
+                media::AudioDeviceType::IN_ACCESSORY, media::AudioDeviceType::OUT_ACCESSORY,
+                media::AudioDeviceDescription::CONNECTION_USB());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_USB_DEVICE, AUDIO_DEVICE_OUT_USB_DEVICE,
+                media::AudioDeviceType::IN_DEVICE, media::AudioDeviceType::OUT_DEVICE,
+                media::AudioDeviceDescription::CONNECTION_USB());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_FM_TUNER, AUDIO_DEVICE_OUT_FM,
+                media::AudioDeviceType::IN_FM_TUNER, media::AudioDeviceType::OUT_FM);
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_LINE, AUDIO_DEVICE_OUT_LINE,
+                media::AudioDeviceType::IN_DEVICE, media::AudioDeviceType::OUT_DEVICE,
+                media::AudioDeviceDescription::CONNECTION_ANALOG());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_SPDIF, AUDIO_DEVICE_OUT_SPDIF,
+                media::AudioDeviceType::IN_DEVICE, media::AudioDeviceType::OUT_DEVICE,
+                media::AudioDeviceDescription::CONNECTION_SPDIF());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_BLUETOOTH_A2DP, AUDIO_DEVICE_OUT_BLUETOOTH_A2DP,
+                media::AudioDeviceType::IN_DEVICE, media::AudioDeviceType::OUT_DEVICE,
+                media::AudioDeviceDescription::CONNECTION_BT_A2DP());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_IP, AUDIO_DEVICE_OUT_IP,
+                media::AudioDeviceType::IN_DEVICE, media::AudioDeviceType::OUT_DEVICE,
+                media::AudioDeviceDescription::CONNECTION_IP_V4());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_BUS, AUDIO_DEVICE_OUT_BUS,
+                media::AudioDeviceType::IN_DEVICE, media::AudioDeviceType::OUT_DEVICE,
+                media::AudioDeviceDescription::CONNECTION_BUS());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_PROXY, AUDIO_DEVICE_OUT_PROXY,
+                media::AudioDeviceType::IN_AFE_PROXY, media::AudioDeviceType::OUT_AFE_PROXY);
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_USB_HEADSET, AUDIO_DEVICE_OUT_USB_HEADSET,
+                media::AudioDeviceType::IN_HEADSET, media::AudioDeviceType::OUT_HEADSET,
+                media::AudioDeviceDescription::CONNECTION_USB());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_HDMI_ARC, AUDIO_DEVICE_OUT_HDMI_ARC,
+                media::AudioDeviceType::IN_DEVICE, media::AudioDeviceType::OUT_DEVICE,
+                media::AudioDeviceDescription::CONNECTION_HDMI_ARC());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_HDMI_EARC, AUDIO_DEVICE_OUT_HDMI_EARC,
+                media::AudioDeviceType::IN_DEVICE, media::AudioDeviceType::OUT_DEVICE,
+                media::AudioDeviceDescription::CONNECTION_HDMI_EARC());
+        append_AudioDeviceDescription(pairs,
+                AUDIO_DEVICE_IN_BLE_HEADSET, AUDIO_DEVICE_OUT_BLE_HEADSET,
+                media::AudioDeviceType::IN_HEADSET, media::AudioDeviceType::OUT_HEADSET,
+                media::AudioDeviceDescription::CONNECTION_BT_LE());
+        return pairs;
+    }();
+    return pairs;
+}
+
+media::AudioFormatDescription make_AudioFormatDescription(media::AudioFormatType type) {
+    media::AudioFormatDescription result;
+    result.type = type;
+    return result;
+}
+
+media::AudioFormatDescription make_AudioFormatDescription(media::PcmType pcm) {
+    auto result = make_AudioFormatDescription(media::AudioFormatType::PCM);
+    result.pcm = pcm;
+    return result;
+}
+
+media::AudioFormatDescription make_AudioFormatDescription(const std::string& encoding) {
+    media::AudioFormatDescription result;
+    result.encoding = encoding;
+    return result;
+}
+
+media::AudioFormatDescription make_AudioFormatDescription(media::PcmType transport,
+        const std::string& encoding) {
+    auto result = make_AudioFormatDescription(encoding);
+    result.pcm = transport;
+    return result;
+}
+
+const detail::AudioFormatPairs& getAudioFormatPairs() {
+    static const detail::AudioFormatPairs pairs = {{
+        {
+            AUDIO_FORMAT_INVALID,
+            make_AudioFormatDescription(media::AudioFormatType::SYS_RESERVED_INVALID)
+        },
+        {
+            AUDIO_FORMAT_DEFAULT, media::AudioFormatDescription{}
+        },
+        {
+            AUDIO_FORMAT_PCM_16_BIT, make_AudioFormatDescription(media::PcmType::INT_16_BIT)
+        },
+        {
+            AUDIO_FORMAT_PCM_8_BIT, make_AudioFormatDescription(media::PcmType::UINT_8_BIT)
+        },
+        {
+            AUDIO_FORMAT_PCM_32_BIT, make_AudioFormatDescription(media::PcmType::INT_32_BIT)
+        },
+        {
+            AUDIO_FORMAT_PCM_8_24_BIT, make_AudioFormatDescription(media::PcmType::FIXED_Q_8_24)
+        },
+        {
+            AUDIO_FORMAT_PCM_FLOAT, make_AudioFormatDescription(media::PcmType::FLOAT_32_BIT)
+        },
+        {
+            AUDIO_FORMAT_PCM_24_BIT_PACKED, make_AudioFormatDescription(media::PcmType::INT_24_BIT)
+        },
+        {
+            // See the comment in MediaDefs.h.
+            AUDIO_FORMAT_MP3, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_MPEG)
+        },
+        {
+            AUDIO_FORMAT_AMR_NB, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_AMR_NB)
+        },
+        {
+            AUDIO_FORMAT_AMR_WB, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_AMR_WB)
+        },
+        {
+            // Note: in MediaDefs.cpp MEDIA_MIMETYPE_AUDIO_AAC = "audio/mp4a-latm".
+            AUDIO_FORMAT_AAC, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_AAC_FORMAT)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_MAIN, make_AudioFormatDescription("audio/aac.main")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_LC, make_AudioFormatDescription("audio/aac.lc")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_SSR, make_AudioFormatDescription("audio/aac.ssr")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_LTP, make_AudioFormatDescription("audio/aac.ltp")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_HE_V1, make_AudioFormatDescription("audio/aac.he.v1")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_SCALABLE, make_AudioFormatDescription("audio/aac.scalable")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ERLC, make_AudioFormatDescription("audio/aac.erlc")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_LD, make_AudioFormatDescription("audio/aac.ld")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_HE_V2, make_AudioFormatDescription("audio/aac.he.v2")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ELD, make_AudioFormatDescription("audio/aac.eld")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_XHE, make_AudioFormatDescription("audio/aac.xhe")
+        },
+        // AUDIO_FORMAT_HE_AAC_V1 and HE_AAC_V2 are removed since they were deprecated long time
+        // ago.
+        {
+            AUDIO_FORMAT_VORBIS, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_VORBIS)
+        },
+        {
+            AUDIO_FORMAT_OPUS, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_OPUS)
+        },
+        {
+            AUDIO_FORMAT_AC3, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_AC3)
+        },
+        {
+            AUDIO_FORMAT_E_AC3, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_EAC3)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_E_AC3_JOC, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_EAC3_JOC)
+        },
+        {
+            AUDIO_FORMAT_DTS, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_DTS)
+        },
+        {
+            AUDIO_FORMAT_DTS_HD, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_DTS_HD)
+        },
+        // In the future, we would like to represent encapsulated bitstreams as
+        // nested AudioFormatDescriptions. The legacy 'AUDIO_FORMAT_IEC61937' type doesn't
+        // specify the format of the encapsulated bitstream.
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_IEC61937,
+            make_AudioFormatDescription(media::PcmType::INT_16_BIT, "audio/x-iec61937")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_DOLBY_TRUEHD, make_AudioFormatDescription("audio/vnd.dolby.truehd")
+        },
+        {
+            AUDIO_FORMAT_EVRC, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_EVRC)
+        },
+        {
+            AUDIO_FORMAT_EVRCB, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_EVRCB)
+        },
+        {
+            AUDIO_FORMAT_EVRCWB, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_EVRCWB)
+        },
+        {
+            AUDIO_FORMAT_EVRCNW, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_EVRCNW)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADIF, make_AudioFormatDescription("audio/aac.adif")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_WMA, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_WMA)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_WMA_PRO, make_AudioFormatDescription("audio/x-ms-wma.pro")
+        },
+        {
+            AUDIO_FORMAT_AMR_WB_PLUS, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_AMR_WB_PLUS)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_MP2, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_MPEG_LAYER_II)
+        },
+        {
+            AUDIO_FORMAT_QCELP, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_QCELP)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_DSD, make_AudioFormatDescription("audio/vnd.sony.dsd")
+        },
+        {
+            AUDIO_FORMAT_FLAC, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_FLAC)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_ALAC, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_ALAC)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_APE, make_AudioFormatDescription("audio/x-ape")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_AAC_ADTS)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS_MAIN, make_AudioFormatDescription("audio/aac-adts.main")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS_LC, make_AudioFormatDescription("audio/aac-adts.lc")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS_SSR, make_AudioFormatDescription("audio/aac-adts.ssr")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS_LTP, make_AudioFormatDescription("audio/aac-adts.ltp")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS_HE_V1, make_AudioFormatDescription("audio/aac-adts.he.v1")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS_SCALABLE, make_AudioFormatDescription("audio/aac-adts.scalable")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS_ERLC, make_AudioFormatDescription("audio/aac-adts.erlc")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS_LD, make_AudioFormatDescription("audio/aac-adts.ld")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS_HE_V2, make_AudioFormatDescription("audio/aac-adts.he.v2")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS_ELD, make_AudioFormatDescription("audio/aac-adts.eld")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_ADTS_XHE, make_AudioFormatDescription("audio/aac-adts.xhe")
+        },
+        {
+            // Note: not in the IANA registry. "vnd.octel.sbc" is not BT SBC.
+            AUDIO_FORMAT_SBC, make_AudioFormatDescription("audio/x-sbc")
+        },
+        {
+            AUDIO_FORMAT_APTX, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_APTX)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_APTX_HD, make_AudioFormatDescription("audio/vnd.qcom.aptx.hd")
+        },
+        {
+            // Note: not in the IANA registry. Matches MediaDefs.cpp.
+            AUDIO_FORMAT_AC4, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_AC4)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_LDAC, make_AudioFormatDescription("audio/vnd.sony.ldac")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_MAT, make_AudioFormatDescription("audio/vnd.dolby.mat")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_MAT_1_0, make_AudioFormatDescription("audio/vnd.dolby.mat.1.0")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_MAT_2_0, make_AudioFormatDescription("audio/vnd.dolby.mat.2.0")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_MAT_2_1, make_AudioFormatDescription("audio/vnd.dolby.mat.2.1")
+        },
+        {
+            AUDIO_FORMAT_AAC_LATM, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_AAC)
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_LATM_LC, make_AudioFormatDescription("audio/mp4a-latm.lc")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_LATM_HE_V1, make_AudioFormatDescription("audio/mp4a-latm.he.v1")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_AAC_LATM_HE_V2, make_AudioFormatDescription("audio/mp4a-latm.he.v2")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_CELT, make_AudioFormatDescription("audio/x-celt")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_APTX_ADAPTIVE, make_AudioFormatDescription("audio/vnd.qcom.aptx.adaptive")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_LHDC, make_AudioFormatDescription("audio/vnd.savitech.lhdc")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_LHDC_LL, make_AudioFormatDescription("audio/vnd.savitech.lhdc.ll")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_APTX_TWSP, make_AudioFormatDescription("audio/vnd.qcom.aptx.twsp")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_LC3, make_AudioFormatDescription("audio/x-lc3")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_MPEGH, make_AudioFormatDescription("audio/x-mpegh")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_MPEGH_BL_L3, make_AudioFormatDescription("audio/x-mpegh.bl.l3")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_MPEGH_BL_L4, make_AudioFormatDescription("audio/x-mpegh.bl.l4")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_MPEGH_LC_L3, make_AudioFormatDescription("audio/x-mpegh.lc.l3")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_MPEGH_LC_L4, make_AudioFormatDescription("audio/x-mpegh.lc.l4")
+        },
+        {
+            // Note: not in the IANA registry.
+            AUDIO_FORMAT_IEC60958,
+            make_AudioFormatDescription(media::PcmType::INT_24_BIT, "audio/x-iec60958")
+        },
+        {
+            AUDIO_FORMAT_DTS_UHD, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_DTS_UHD)
+        },
+        {
+            AUDIO_FORMAT_DRA, make_AudioFormatDescription(MEDIA_MIMETYPE_AUDIO_DRA)
+        },
+    }};
+    return pairs;
+}
+
+template<typename S, typename T>
+std::unordered_map<S, T> make_DirectMap(const std::vector<std::pair<S, T>>& v) {
+    std::unordered_map<S, T> result(v.begin(), v.end());
+    LOG_ALWAYS_FATAL_IF(result.size() != v.size(), "Duplicate key elements detected");
+    return result;
+}
+
+template<typename S, typename T>
+std::unordered_map<T, S> make_ReverseMap(const std::vector<std::pair<S, T>>& v) {
+    std::unordered_map<T, S> result;
+    std::transform(v.begin(), v.end(), std::inserter(result, result.begin()),
+            [](const std::pair<S, T>& p) {
+                return std::make_pair(p.second, p.first);
+            });
+    LOG_ALWAYS_FATAL_IF(result.size() != v.size(), "Duplicate key elements detected");
+    return result;
+}
+
+}  // namespace
+
+ConversionResult<audio_devices_t> aidl2legacy_AudioDeviceDescription_audio_devices_t(
+        const media::AudioDeviceDescription& aidl) {
+    static const std::unordered_map<media::AudioDeviceDescription, audio_devices_t> m =
+            make_ReverseMap(getAudioDevicePairs());
+    if (auto it = m.find(aidl); it != m.end()) {
+        return it->second;
+    } else {
+        ALOGE("%s: no legacy audio_devices_t found for %s", __func__, aidl.toString().c_str());
+        return unexpected(BAD_VALUE);
+    }
+}
+
+ConversionResult<media::AudioDeviceDescription> legacy2aidl_audio_devices_t_AudioDeviceDescription(
+        audio_devices_t legacy) {
+    static const std::unordered_map<audio_devices_t, media::AudioDeviceDescription> m =
+            make_DirectMap(getAudioDevicePairs());
+    if (auto it = m.find(legacy); it != m.end()) {
+        return it->second;
+    } else {
+        ALOGE("%s: no AudioDeviceDescription found for legacy audio_devices_t value 0x%x",
+                __func__, legacy);
+        return unexpected(BAD_VALUE);
+    }
+}
+
+ConversionResult<audio_format_t> aidl2legacy_AudioFormatDescription_audio_format_t(
+        const media::AudioFormatDescription& aidl) {
+    static const std::unordered_map<media::AudioFormatDescription, audio_format_t> m =
+            make_ReverseMap(getAudioFormatPairs());
+    if (auto it = m.find(aidl); it != m.end()) {
+        return it->second;
+    } else {
+        ALOGE("%s: no legacy audio_format_t found for %s", __func__, aidl.toString().c_str());
+        return unexpected(BAD_VALUE);
+    }
+}
+
+ConversionResult<media::AudioFormatDescription> legacy2aidl_audio_format_t_AudioFormatDescription(
+        audio_format_t legacy) {
+    static const std::unordered_map<audio_format_t, media::AudioFormatDescription> m =
+            make_DirectMap(getAudioFormatPairs());
+    if (auto it = m.find(legacy); it != m.end()) {
+        return it->second;
+    } else {
+        ALOGE("%s: no AudioFormatDescription found for legacy audio_format_t value 0x%x",
+                __func__, legacy);
+        return unexpected(BAD_VALUE);
+    }
 }
 
 ConversionResult<audio_gain_mode_t> aidl2legacy_AudioGainMode_audio_gain_mode_t(media::AudioGainMode aidl) {
@@ -465,7 +1091,7 @@
     legacy.index = VALUE_OR_RETURN(convertIntegral<int>(aidl.index));
     legacy.mode = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_gain_mode_t_mask(aidl.mode));
     legacy.channel_mask =
-            VALUE_OR_RETURN(aidl2legacy_int32_t_audio_channel_mask_t(aidl.channelMask));
+            VALUE_OR_RETURN(aidl2legacy_AudioChannelMask_audio_channel_mask_t(aidl.channelMask));
     const bool isInput = VALUE_OR_RETURN(direction(role, type)) == Direction::INPUT;
     const bool isJoint = bitmaskIsSet(aidl.mode, media::AudioGainMode::JOINT);
     size_t numValues = isJoint ? 1
@@ -487,7 +1113,7 @@
     aidl.index = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.index));
     aidl.mode = VALUE_OR_RETURN(legacy2aidl_audio_gain_mode_t_int32_t_mask(legacy.mode));
     aidl.channelMask =
-            VALUE_OR_RETURN(legacy2aidl_audio_channel_mask_t_int32_t(legacy.channel_mask));
+            VALUE_OR_RETURN(legacy2aidl_audio_channel_mask_t_AudioChannelMask(legacy.channel_mask));
     const bool isInput = VALUE_OR_RETURN(direction(role, type)) == Direction::INPUT;
     const bool isJoint = (legacy.mode & AUDIO_GAIN_MODE_JOINT) != 0;
     size_t numValues = isJoint ? 1
@@ -1054,7 +1680,8 @@
     }
     if (bitmaskIsSet(aidl.configMask, media::AudioPortConfigType::CHANNEL_MASK)) {
         legacy.channel_mask =
-                VALUE_OR_RETURN(aidl2legacy_int32_t_audio_channel_mask_t(aidl.channelMask));
+                VALUE_OR_RETURN(
+                        aidl2legacy_AudioChannelMask_audio_channel_mask_t(aidl.channelMask));
     }
     if (bitmaskIsSet(aidl.configMask, media::AudioPortConfigType::FORMAT)) {
         legacy.format = VALUE_OR_RETURN(aidl2legacy_AudioFormat_audio_format_t(aidl.format));
@@ -1083,7 +1710,8 @@
     }
     if (legacy.config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) {
         aidl.channelMask =
-                VALUE_OR_RETURN(legacy2aidl_audio_channel_mask_t_int32_t(legacy.channel_mask));
+                VALUE_OR_RETURN(
+                        legacy2aidl_audio_channel_mask_t_AudioChannelMask(legacy.channel_mask));
     }
     if (legacy.config_mask & AUDIO_PORT_CONFIG_FORMAT) {
         aidl.format = VALUE_OR_RETURN(legacy2aidl_audio_format_t_AudioFormat(legacy.format));
@@ -1154,7 +1782,7 @@
     legacy->mSamplingRate = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.samplingRate));
     legacy->mFormat = VALUE_OR_RETURN(aidl2legacy_AudioFormat_audio_format_t(aidl.format));
     legacy->mChannelMask =
-            VALUE_OR_RETURN(aidl2legacy_int32_t_audio_channel_mask_t(aidl.channelMask));
+            VALUE_OR_RETURN(aidl2legacy_AudioChannelMask_audio_channel_mask_t(aidl.channelMask));
     legacy->mFrameCount = VALUE_OR_RETURN(convertIntegral<size_t>(aidl.frameCount));
     legacy->mFrameCountHAL = VALUE_OR_RETURN(convertIntegral<size_t>(aidl.frameCountHAL));
     legacy->mLatency = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.latency));
@@ -1170,7 +1798,7 @@
     aidl.samplingRate = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy->mSamplingRate));
     aidl.format = VALUE_OR_RETURN(legacy2aidl_audio_format_t_AudioFormat(legacy->mFormat));
     aidl.channelMask = VALUE_OR_RETURN(
-            legacy2aidl_audio_channel_mask_t_int32_t(legacy->mChannelMask));
+            legacy2aidl_audio_channel_mask_t_AudioChannelMask(legacy->mChannelMask));
     aidl.frameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(legacy->mFrameCount));
     aidl.frameCountHAL = VALUE_OR_RETURN(convertIntegral<int64_t>(legacy->mFrameCountHAL));
     aidl.latency = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy->mLatency));
@@ -1503,7 +2131,7 @@
     aidl.version = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.version));
     aidl.config.sampleRate = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.sample_rate));
     aidl.config.channelMask = VALUE_OR_RETURN(
-            legacy2aidl_audio_channel_mask_t_int32_t(legacy.channel_mask));
+            legacy2aidl_audio_channel_mask_t_AudioChannelMask(legacy.channel_mask));
     aidl.config.format = VALUE_OR_RETURN(legacy2aidl_audio_format_t_AudioFormat(legacy.format));
     aidl.streamType = VALUE_OR_RETURN(
             legacy2aidl_audio_stream_type_t_AudioStreamType(legacy.stream_type));
@@ -1535,7 +2163,7 @@
     audio_config_t legacy;
     legacy.sample_rate = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.sampleRate));
     legacy.channel_mask = VALUE_OR_RETURN(
-            aidl2legacy_int32_t_audio_channel_mask_t(aidl.channelMask));
+            aidl2legacy_AudioChannelMask_audio_channel_mask_t(aidl.channelMask));
     legacy.format = VALUE_OR_RETURN(aidl2legacy_AudioFormat_audio_format_t(aidl.format));
     legacy.offload_info = VALUE_OR_RETURN(
             aidl2legacy_AudioOffloadInfo_audio_offload_info_t(aidl.offloadInfo));
@@ -1548,7 +2176,7 @@
     media::AudioConfig aidl;
     aidl.sampleRate = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.sample_rate));
     aidl.channelMask = VALUE_OR_RETURN(
-            legacy2aidl_audio_channel_mask_t_int32_t(legacy.channel_mask));
+            legacy2aidl_audio_channel_mask_t_AudioChannelMask(legacy.channel_mask));
     aidl.format = VALUE_OR_RETURN(legacy2aidl_audio_format_t_AudioFormat(legacy.format));
     aidl.offloadInfo = VALUE_OR_RETURN(
             legacy2aidl_audio_offload_info_t_AudioOffloadInfo(legacy.offload_info));
@@ -1561,7 +2189,7 @@
     audio_config_base_t legacy;
     legacy.sample_rate = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.sampleRate));
     legacy.channel_mask = VALUE_OR_RETURN(
-            aidl2legacy_int32_t_audio_channel_mask_t(aidl.channelMask));
+            aidl2legacy_AudioChannelMask_audio_channel_mask_t(aidl.channelMask));
     legacy.format = VALUE_OR_RETURN(aidl2legacy_AudioFormat_audio_format_t(aidl.format));
     return legacy;
 }
@@ -1571,7 +2199,7 @@
     media::AudioConfigBase aidl;
     aidl.sampleRate = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.sample_rate));
     aidl.channelMask = VALUE_OR_RETURN(
-            legacy2aidl_audio_channel_mask_t_int32_t(legacy.channel_mask));
+            legacy2aidl_audio_channel_mask_t_AudioChannelMask(legacy.channel_mask));
     aidl.format = VALUE_OR_RETURN(legacy2aidl_audio_format_t_AudioFormat(legacy.format));
     return aidl;
 }
@@ -1916,7 +2544,7 @@
     }
     RETURN_IF_ERROR(
             convertRange(aidl.channelMasks.begin(), aidl.channelMasks.end(), legacy.channel_masks,
-                         aidl2legacy_int32_t_audio_channel_mask_t));
+                         aidl2legacy_AudioChannelMask_audio_channel_mask_t));
     legacy.num_channel_masks = aidl.channelMasks.size();
 
     legacy.encapsulation_type = VALUE_OR_RETURN(
@@ -1943,7 +2571,7 @@
     RETURN_IF_ERROR(
             convertRange(legacy.channel_masks, legacy.channel_masks + legacy.num_channel_masks,
                          std::back_inserter(aidl.channelMasks),
-                         legacy2aidl_audio_channel_mask_t_int32_t));
+                         legacy2aidl_audio_channel_mask_t_AudioChannelMask));
 
     aidl.encapsulationType = VALUE_OR_RETURN(
             legacy2aidl_audio_encapsulation_type_t_AudioEncapsulationType(
@@ -1956,7 +2584,7 @@
     audio_gain legacy;
     legacy.mode = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_gain_mode_t_mask(aidl.mode));
     legacy.channel_mask = VALUE_OR_RETURN(
-            aidl2legacy_int32_t_audio_channel_mask_t(aidl.channelMask));
+            aidl2legacy_AudioChannelMask_audio_channel_mask_t(aidl.channelMask));
     legacy.min_value = VALUE_OR_RETURN(convertIntegral<int>(aidl.minValue));
     legacy.max_value = VALUE_OR_RETURN(convertIntegral<int>(aidl.maxValue));
     legacy.default_value = VALUE_OR_RETURN(convertIntegral<int>(aidl.defaultValue));
@@ -1971,7 +2599,7 @@
     media::AudioGain aidl;
     aidl.mode = VALUE_OR_RETURN(legacy2aidl_audio_gain_mode_t_int32_t_mask(legacy.mode));
     aidl.channelMask = VALUE_OR_RETURN(
-            legacy2aidl_audio_channel_mask_t_int32_t(legacy.channel_mask));
+            legacy2aidl_audio_channel_mask_t_AudioChannelMask(legacy.channel_mask));
     aidl.minValue = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.min_value));
     aidl.maxValue = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.max_value));
     aidl.defaultValue = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.default_value));
diff --git a/media/libaudioclient/Android.bp b/media/libaudioclient/Android.bp
index 9c307ff..a23c844 100644
--- a/media/libaudioclient/Android.bp
+++ b/media/libaudioclient/Android.bp
@@ -229,6 +229,7 @@
         "libbinder",
         "liblog",
         "libshmemcompat",
+        "libstagefright_foundation",
         "libutils",
         "shared-file-region-aidl-cpp",
         "framework-permission-aidl-cpp",
@@ -302,15 +303,21 @@
     local_include_dir: "aidl",
     srcs: [
         "aidl/android/media/AudioAttributesInternal.aidl",
+        "aidl/android/media/AudioChannelMask.aidl",
         "aidl/android/media/AudioClient.aidl",
         "aidl/android/media/AudioConfig.aidl",
         "aidl/android/media/AudioConfigBase.aidl",
         "aidl/android/media/AudioContentType.aidl",
         "aidl/android/media/AudioDevice.aidl",
+        "aidl/android/media/AudioDeviceDescription.aidl",
+        "aidl/android/media/AudioDeviceType.aidl",
         "aidl/android/media/AudioDualMonoMode.aidl",
         "aidl/android/media/AudioEncapsulationMode.aidl",
         "aidl/android/media/AudioEncapsulationMetadataType.aidl",
         "aidl/android/media/AudioEncapsulationType.aidl",
+        "aidl/android/media/AudioFormatDescription.aidl",
+        "aidl/android/media/AudioFormatType.aidl",
+        "aidl/android/media/AudioFormatSys.aidl",
         "aidl/android/media/AudioFlag.aidl",
         "aidl/android/media/AudioGain.aidl",
         "aidl/android/media/AudioGainConfig.aidl",
@@ -350,10 +357,11 @@
         "aidl/android/media/AudioVibratorInfo.aidl",
         "aidl/android/media/EffectDescriptor.aidl",
         "aidl/android/media/ExtraAudioDescriptor.aidl",
+        "aidl/android/media/PcmType.aidl",
         "aidl/android/media/TrackSecondaryOutputInfo.aidl",
     ],
     imports: [
-        "audio_common-aidl",
+        "android.media.audio.common.types",
         "framework-permission-aidl",
     ],
     backend: {
@@ -364,6 +372,9 @@
                 "com.android.media",
             ],
         },
+        java: {
+            sdk_version: "module_current",
+        },
     },
 }
 aidl_interface {
@@ -391,7 +402,6 @@
         "aidl/android/media/SoundTriggerSession.aidl",
     ],
     imports: [
-        "audio_common-aidl",
         "audioclient-types-aidl",
     ],
     backend: {
@@ -402,6 +412,9 @@
                 "com.android.media",
             ],
         },
+        java: {
+            sdk_version: "module_current",
+        },
     },
 }
 
@@ -431,7 +444,6 @@
         "aidl/android/media/IAudioTrackCallback.aidl",
     ],
     imports: [
-        "audio_common-aidl",
         "audioclient-types-aidl",
         "av-types-aidl",
         "effect-aidl",
@@ -447,6 +459,9 @@
                 "com.android.media",
             ],
         },
+        java: {
+            sdk_version: "module_current",
+        },
     },
 }
 
@@ -465,7 +480,6 @@
         "aidl/android/media/IAudioPolicyServiceClient.aidl",
     ],
     imports: [
-        "audio_common-aidl",
         "audioclient-types-aidl",
         "audiopolicy-types-aidl",
         "capture_state_listener-aidl",
@@ -481,5 +495,8 @@
                 "com.android.media",
             ],
         },
+        java: {
+            sdk_version: "module_current",
+        },
     },
 }
diff --git a/media/libaudioclient/AudioRecord.cpp b/media/libaudioclient/AudioRecord.cpp
index a1d3bdb..a02a373 100644
--- a/media/libaudioclient/AudioRecord.cpp
+++ b/media/libaudioclient/AudioRecord.cpp
@@ -668,6 +668,8 @@
 // ---- Explicit Routing ---------------------------------------------------
 status_t AudioRecord::setInputDevice(audio_port_handle_t deviceId) {
     AutoMutex lock(mLock);
+    ALOGV("%s(%d): deviceId=%d mSelectedDeviceId=%d",
+            __func__, mPortId, deviceId, mSelectedDeviceId);
     if (mSelectedDeviceId != deviceId) {
         mSelectedDeviceId = deviceId;
         if (mStatus == NO_ERROR) {
diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index 88e752b..640f547 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -1865,7 +1865,7 @@
     media::Int numSurroundFormatsAidl;
     numSurroundFormatsAidl.value =
             VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(*numSurroundFormats));
-    std::vector<media::audio::common::AudioFormat> surroundFormatsAidl;
+    std::vector<media::AudioFormatSys> surroundFormatsAidl;
     std::vector<bool> surroundFormatsEnabledAidl;
     RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(
             aps->getSurroundFormats(&numSurroundFormatsAidl, &surroundFormatsAidl,
@@ -1892,7 +1892,7 @@
     media::Int numSurroundFormatsAidl;
     numSurroundFormatsAidl.value =
             VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(*numSurroundFormats));
-    std::vector<media::audio::common::AudioFormat> surroundFormatsAidl;
+    std::vector<media::AudioFormatSys> surroundFormatsAidl;
     RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(
             aps->getReportedSurroundFormats(&numSurroundFormatsAidl, &surroundFormatsAidl)));
 
@@ -1908,7 +1908,7 @@
     const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
     if (aps == 0) return PERMISSION_DENIED;
 
-    media::audio::common::AudioFormat audioFormatAidl = VALUE_OR_RETURN_STATUS(
+    media::AudioFormatSys audioFormatAidl = VALUE_OR_RETURN_STATUS(
             legacy2aidl_audio_format_t_AudioFormat(audioFormat));
     return statusTFromBinderStatus(
             aps->setSurroundFormatEnabled(audioFormatAidl, enabled));
@@ -1962,7 +1962,7 @@
             & aps = AudioSystem::get_audio_policy_service();
     if (aps == 0) return PERMISSION_DENIED;
 
-    std::vector<media::audio::common::AudioFormat> formatsAidl;
+    std::vector<media::AudioFormatSys> formatsAidl;
     RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(
             aps->getHwOffloadEncodingFormatsSupportedForA2DP(&formatsAidl)));
     *formats = VALUE_OR_RETURN_STATUS(
diff --git a/media/libaudioclient/AudioTrack.cpp b/media/libaudioclient/AudioTrack.cpp
index 6765bdb..594c3f3 100644
--- a/media/libaudioclient/AudioTrack.cpp
+++ b/media/libaudioclient/AudioTrack.cpp
@@ -1555,6 +1555,8 @@
 
 status_t AudioTrack::setOutputDevice(audio_port_handle_t deviceId) {
     AutoMutex lock(mLock);
+    ALOGV("%s(%d): deviceId=%d mSelectedDeviceId=%d",
+            __func__, mPortId, deviceId, mSelectedDeviceId);
     if (mSelectedDeviceId != deviceId) {
         mSelectedDeviceId = deviceId;
         if (mStatus == NO_ERROR) {
diff --git a/media/libaudioclient/IAudioFlinger.cpp b/media/libaudioclient/IAudioFlinger.cpp
index 0564cdf..f89de97 100644
--- a/media/libaudioclient/IAudioFlinger.cpp
+++ b/media/libaudioclient/IAudioFlinger.cpp
@@ -238,7 +238,7 @@
 audio_format_t AudioFlingerClientAdapter::format(audio_io_handle_t output) const {
     auto result = [&]() -> ConversionResult<audio_format_t> {
         int32_t outputAidl = VALUE_OR_RETURN(legacy2aidl_audio_io_handle_t_int32_t(output));
-        media::audio::common::AudioFormat aidlRet;
+        media::AudioFormatSys aidlRet;
         RETURN_IF_ERROR(statusTFromBinderStatus(mDelegate->format(outputAidl, &aidlRet)));
         return aidl2legacy_AudioFormat_audio_format_t(aidlRet);
     }();
@@ -406,10 +406,10 @@
                                                      audio_channel_mask_t channelMask) const {
     auto result = [&]() -> ConversionResult<size_t> {
         int32_t sampleRateAidl = VALUE_OR_RETURN(convertIntegral<int32_t>(sampleRate));
-        media::audio::common::AudioFormat formatAidl = VALUE_OR_RETURN(
+        media::AudioFormatSys formatAidl = VALUE_OR_RETURN(
                 legacy2aidl_audio_format_t_AudioFormat(format));
-        int32_t channelMaskAidl = VALUE_OR_RETURN(
-                legacy2aidl_audio_channel_mask_t_int32_t(channelMask));
+        media::AudioChannelMask channelMaskAidl = VALUE_OR_RETURN(
+                legacy2aidl_audio_channel_mask_t_AudioChannelMask(channelMask));
         int64_t aidlRet;
         RETURN_IF_ERROR(statusTFromBinderStatus(
                 mDelegate->getInputBufferSize(sampleRateAidl, formatAidl, channelMaskAidl,
@@ -798,7 +798,7 @@
 }
 
 Status AudioFlingerServerAdapter::format(int32_t output,
-                                         media::audio::common::AudioFormat* _aidl_return) {
+                                         media::AudioFormatSys* _aidl_return) {
     audio_io_handle_t outputLegacy = VALUE_OR_RETURN_BINDER(
             aidl2legacy_int32_t_audio_io_handle_t(output));
     *_aidl_return = VALUE_OR_RETURN_BINDER(
@@ -926,13 +926,14 @@
 }
 
 Status AudioFlingerServerAdapter::getInputBufferSize(int32_t sampleRate,
-                                                     media::audio::common::AudioFormat format,
-                                                     int32_t channelMask, int64_t* _aidl_return) {
+                                                     media::AudioFormatSys format,
+                                                     media::AudioChannelMask channelMask,
+                                                     int64_t* _aidl_return) {
     uint32_t sampleRateLegacy = VALUE_OR_RETURN_BINDER(convertIntegral<uint32_t>(sampleRate));
     audio_format_t formatLegacy = VALUE_OR_RETURN_BINDER(
             aidl2legacy_AudioFormat_audio_format_t(format));
     audio_channel_mask_t channelMaskLegacy = VALUE_OR_RETURN_BINDER(
-            aidl2legacy_int32_t_audio_channel_mask_t(channelMask));
+            aidl2legacy_AudioChannelMask_audio_channel_mask_t(channelMask));
     size_t size = mDelegate->getInputBufferSize(sampleRateLegacy, formatLegacy, channelMaskLegacy);
     *_aidl_return = VALUE_OR_RETURN_BINDER(convertIntegral<int64_t>(size));
     return Status::ok();
diff --git a/media/libaudioclient/TEST_MAPPING b/media/libaudioclient/TEST_MAPPING
new file mode 100644
index 0000000..d8c18c0
--- /dev/null
+++ b/media/libaudioclient/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "presubmit": [
+    {
+       "name": "audio_aidl_conversion_tests"
+    }
+  ]
+}
diff --git a/media/libaudioclient/aidl/android/media/AudioChannelMask.aidl b/media/libaudioclient/aidl/android/media/AudioChannelMask.aidl
new file mode 100644
index 0000000..1e7e6e5
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/AudioChannelMask.aidl
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+package android.media;
+
+/**
+ * AudioChannelMask is an opaque type and its internal layout should not be
+ * assumed as it may change in the future.
+ *
+ * This is a temporary implementation to provide a distinct type (instead of
+ * 'int') in all the places that need a channel mask. Later the enum will be
+ * replaced with a type which is more extensible by vendors.
+ *
+ * The actual value range of this enum is the same as of
+ * the 'audio_channel_mask_t' enum.
+ *
+ * {@hide}
+ */
+@Backing(type="int")
+enum AudioChannelMask {
+   /**
+    * Framework use only, do not constitute a valid channel mask.
+    */
+   INVALID = 0xC0000000,
+
+   NONE = 0,
+   /**
+    * Since the current code never uses the values of the SAIDL enum
+    * directly--it uses the values of the C enum and coerces the type--
+    * we don't specify any other values here.
+    */
+}
diff --git a/media/libaudioclient/aidl/android/media/AudioConfig.aidl b/media/libaudioclient/aidl/android/media/AudioConfig.aidl
index 8dc97d3..dc4e9e4 100644
--- a/media/libaudioclient/aidl/android/media/AudioConfig.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioConfig.aidl
@@ -16,20 +16,17 @@
 
 package android.media;
 
+import android.media.AudioChannelMask;
+import android.media.AudioFormatSys;
 import android.media.AudioOffloadInfo;
-import android.media.audio.common.AudioFormat;
 
 /**
  * {@hide}
  */
 parcelable AudioConfig {
     int sampleRate;
-    /**
-     * Interpreted as audio_channel_mask_t.
-     * TODO(ytai): Create a designated type.
-     */
-    int channelMask;
-    AudioFormat format;
+    AudioChannelMask channelMask;
+    AudioFormatSys format;
     AudioOffloadInfo offloadInfo;
     long frameCount;
 }
diff --git a/media/libaudioclient/aidl/android/media/AudioConfigBase.aidl b/media/libaudioclient/aidl/android/media/AudioConfigBase.aidl
index 8353c0d..59fbee6 100644
--- a/media/libaudioclient/aidl/android/media/AudioConfigBase.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioConfigBase.aidl
@@ -16,14 +16,14 @@
 
 package android.media;
 
-import android.media.audio.common.AudioFormat;
+import android.media.AudioChannelMask;
+import android.media.AudioFormatSys;
 
 /**
  * {@hide}
  */
 parcelable AudioConfigBase {
     int sampleRate;
-    /** Interpreted as audio_channel_mask_t. */
-    int channelMask;
-    AudioFormat format;
+    AudioChannelMask channelMask;
+    AudioFormatSys format;
 }
diff --git a/media/libaudioclient/aidl/android/media/AudioDeviceDescription.aidl b/media/libaudioclient/aidl/android/media/AudioDeviceDescription.aidl
new file mode 100644
index 0000000..f7548b9
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/AudioDeviceDescription.aidl
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+package android.media;
+
+import android.media.AudioDeviceType;
+
+parcelable AudioDeviceDescription {
+    /**
+     * Type and directionality of the device. For bidirectional audio devices
+     * two descriptions need to be created, having the same value for
+     * the 'connection' field.
+     *
+     * See 'AudioDeviceType' for the list of supported values.
+     */
+    AudioDeviceType type = AudioDeviceType.NONE;
+    /**
+     * Specifies the type of the connection of the device to the audio system.
+     * Usually it's some kind of a communication protocol, e.g. Bluetooth SCO or
+     * USB. There is a list of connection types recognized by the framework,
+     * defined using 'CONNECTION_' constants. Vendors can add their own
+     * connection types with "vx.<vendor>." prefix.
+     *
+     * When the 'connection' field is left empty and 'type != NONE | DEFAULT',
+     * it is assumed that the device is permanently attached to the audio
+     * system, e.g. a built-in speaker or microphone.
+     *
+     * The 'connection' field must be left empty if 'type' is 'NONE' or
+     * '{IN|OUT}_DEFAULT'.
+     */
+    @utf8InCpp String connection;
+    /**
+     * Analog connection, for example, via 3.5 mm analog jack.
+     */
+    const @utf8InCpp String CONNECTION_ANALOG = "analog";
+    /**
+     * Low-End (Analog) Desk Dock.
+     */
+    const @utf8InCpp String CONNECTION_ANALOG_DOCK = "analog-dock";
+    /**
+     * Bluetooth A2DP connection.
+     */
+    const @utf8InCpp String CONNECTION_BT_A2DP = "bt-a2dp";
+    /**
+     * Bluetooth Low Energy (LE) connection.
+     */
+    const @utf8InCpp String CONNECTION_BT_LE = "bt-le";
+    /**
+     * Bluetooth SCO connection.
+     */
+    const @utf8InCpp String CONNECTION_BT_SCO = "bt-sco";
+    /**
+     * Bus connection. Mostly used in automotive scenarios.
+     */
+    const @utf8InCpp String CONNECTION_BUS = "bus";
+    /**
+     * High-End (Digital) Desk Dock.
+     */
+    const @utf8InCpp String CONNECTION_DIGITAL_DOCK = "digital-dock";
+    /**
+     * HDMI connection.
+     */
+    const @utf8InCpp String CONNECTION_HDMI = "hdmi";
+    /**
+     * HDMI ARC connection.
+     */
+    const @utf8InCpp String CONNECTION_HDMI_ARC = "hdmi-arc";
+    /**
+     * HDMI eARC connection.
+     */
+    const @utf8InCpp String CONNECTION_HDMI_EARC = "hdmi-earc";
+    /**
+     * IP v4 connection.
+     */
+    const @utf8InCpp String CONNECTION_IP_V4 = "ip-v4";
+    /**
+     * SPDIF connection.
+     */
+    const @utf8InCpp String CONNECTION_SPDIF = "spdif";
+    /**
+     * A wireless connection when the actual protocol is unspecified.
+     */
+    const @utf8InCpp String CONNECTION_WIRELESS = "wireless";
+    /**
+     * USB connection.
+     */
+    const @utf8InCpp String CONNECTION_USB = "usb";
+}
diff --git a/media/libaudioclient/aidl/android/media/AudioDeviceType.aidl b/media/libaudioclient/aidl/android/media/AudioDeviceType.aidl
new file mode 100644
index 0000000..4da9fd6
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/AudioDeviceType.aidl
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+package android.media;
+
+/**
+ * The type of the audio device. Only used as part of 'AudioDeviceDescription'
+ * structure.
+ *
+ * Types are divided into "input" and "output" categories. Audio devices that
+ * have both audio input and output, for example, headsets, are represented by a
+ * pair of input and output device types.
+ *
+ * The 'AudioDeviceType' intentionally binds together directionality and 'kind'
+ * of the device to avoid making them fully orthogonal. This is because not all
+ * types of devices are bidirectional, for example, speakers can only be used
+ * for output and microphones can only be used for input (at least, in the
+ * context of the audio framework).
+ */
+@Backing(type="int")
+enum AudioDeviceType {
+    /**
+     * "None" type is a "null" value. All fields of 'AudioDeviceDescription'
+     * must have default / empty / null values.
+     */
+    NONE = 0,
+    /**
+     * The "default" device is used when the client does not have any
+     * preference for a particular device.
+     */
+    IN_DEFAULT = 1,
+    /**
+     * A device implementing Android Open Accessory protocol.
+     */
+    IN_ACCESSORY = 2,
+    /**
+     * Input from a DSP front-end proxy device.
+     */
+    IN_AFE_PROXY = 3,
+    /**
+     * Used when only the connection protocol is known, e.g. a "HDMI Device."
+     */
+    IN_DEVICE = 4,
+    /**
+     * A device providing reference input for echo canceller.
+     */
+    IN_ECHO_REFERENCE = 5,
+    /**
+     * FM Tuner input.
+     */
+    IN_FM_TUNER = 6,
+    /**
+     * A microphone of a headset.
+     */
+    IN_HEADSET = 7,
+    /**
+     * Loopback input.
+     */
+    IN_LOOPBACK = 8,
+    /**
+     * The main microphone (the frontal mic on mobile devices).
+     */
+    IN_MICROPHONE = 9,
+    /**
+     * The secondary microphone (the back mic on mobile devices).
+     */
+    IN_MICROPHONE_BACK = 10,
+    /**
+     * Input from a submix of other streams.
+     */
+    IN_SUBMIX = 11,
+    /**
+     * Audio received via the telephone line.
+     */
+    IN_TELEPHONY_RX = 12,
+    /**
+     * TV Tuner audio input.
+     */
+    IN_TV_TUNER = 13,
+    /**
+     * The "default" device is used when the client does not have any
+     * preference for a particular device.
+     */
+    OUT_DEFAULT = 129,
+    /**
+     * A device implementing Android Open Accessory protocol.
+     */
+    OUT_ACCESSORY = 130,
+    /**
+     * Output from a DSP front-end proxy device.
+     */
+    OUT_AFE_PROXY = 131,
+    /**
+     * Car audio system.
+     */
+    OUT_CARKIT = 132,
+    /**
+     * Used when only the connection protocol is known, e.g. a "HDMI Device."
+     */
+    OUT_DEVICE = 133,
+    /**
+     * The echo canceller device.
+     */
+    OUT_ECHO_CANCELLER = 134,
+    /**
+     * The FM Tuner device.
+     */
+    OUT_FM = 135,
+    /**
+     * Headphones.
+     */
+    OUT_HEADPHONE = 136,
+    /**
+     * Headphones of a headset.
+     */
+    OUT_HEADSET = 137,
+    /**
+     * Hearing aid.
+     */
+    OUT_HEARING_AID = 138,
+    /**
+     * Secondary line level output.
+     */
+    OUT_LINE_AUX = 139,
+    /**
+     * The main speaker.
+     */
+    OUT_SPEAKER = 140,
+    /**
+     * The speaker of a mobile device in the case when it is close to the ear.
+     */
+    OUT_SPEAKER_EARPIECE = 141,
+    /**
+     * The main speaker with overload / overheating protection.
+     */
+    OUT_SPEAKER_SAFE = 142,
+    /**
+     * Output into a submix.
+     */
+    OUT_SUBMIX = 143,
+    /**
+     * Output into a telephone line.
+     */
+    OUT_TELEPHONY_TX = 144,
+}
diff --git a/media/libaudioclient/aidl/android/media/AudioFormatDescription.aidl b/media/libaudioclient/aidl/android/media/AudioFormatDescription.aidl
new file mode 100644
index 0000000..a656348
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/AudioFormatDescription.aidl
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+package android.media;
+
+import android.media.AudioFormatType;
+import android.media.PcmType;
+
+/**
+ * An extensible type for specifying audio formats. All formats are largely
+ * divided into two classes: PCM and non-PCM (bitstreams). Bitstreams can
+ * be encapsulated into PCM streams.
+ *
+ * The type defined in a way to make each format uniquely identifiable, so
+ * that if the framework and the HAL construct a value for the same type
+ * (e.g. PCM 16 bit), they will produce identical parcelables which will have
+ * identical hashes. This makes possible deduplicating type descriptions
+ * by the framework when they are received from different HAL modules without
+ * relying on having some centralized registry of enumeration values.
+ *
+ * {@hide}
+ */
+parcelable AudioFormatDescription {
+    /**
+     * The type of the audio format. See the 'AudioFormatType' for the
+     * list of supported values.
+     */
+    AudioFormatType type = AudioFormatType.DEFAULT;
+    /**
+     * The type of the PCM stream or the transport stream for PCM
+     * encapsulations.  See 'PcmType' for the list of supported values.
+     */
+    PcmType pcm = PcmType.DEFAULT;
+    /**
+     * Optional encoding specification. Must be left empty when:
+     *
+     *  - 'type == DEFAULT && pcm == DEFAULT' -- that means "default" type;
+     *  - 'type == PCM' -- that means a regular PCM stream (not an encapsulation
+     *    of an encoded bitstream).
+     *
+     * For PCM encapsulations of encoded bitstreams (e.g. an encapsulation
+     * according to IEC-61937 standard), the value of the 'pcm' field must
+     * be set accordingly, as an example, PCM_INT_16_BIT must be used for
+     * IEC-61937. Note that 'type == NON_PCM' in this case.
+     *
+     * Encoding names mostly follow IANA standards for media types (MIME), and
+     * frameworks/av/media/libstagefright/foundation/MediaDefs.cpp with the
+     * latter having priority.  Since there are still many audio types not found
+     * in any of these lists, the following rules are applied:
+     *
+     *   - If there is a direct MIME type for the encoding, the MIME type name
+     *     is used as is, e.g. "audio/eac3" for the EAC-3 format.
+     *   - If the encoding is a "subformat" of a MIME-registered format,
+     *     the latter is augmented with a suffix, e.g. "audio/eac3-joc" for the
+     *     JOC extension of EAC-3.
+     *   - If it's a proprietary format, a "vnd." prefix is added, similar to
+     *     IANA rules, e.g. "audio/vnd.dolby.truehd".
+     *   - Otherwise, "x-" prefix is added, e.g. "audio/x-iec61937".
+     *   - All MIME types not found in the IANA formats list have an associated
+     *     comment.
+     *
+     * For PCM encapsulations with a known bitstream format, the latter
+     * is added to the encapsulation encoding as a suffix, after a "+" char.
+     * For example, an IEC61937 encapsulation of AC3 has the following
+     * representation:
+     *   type = NON_PCM,
+     *   pcm = PcmType.INT_16_BIT,
+     *   encoding = "audio/x-iec61937+audio/ac3"
+     */
+    @utf8InCpp String encoding;
+}
diff --git a/media/libaudioclient/aidl/android/media/AudioFormatSys.aidl b/media/libaudioclient/aidl/android/media/AudioFormatSys.aidl
new file mode 100644
index 0000000..95a3753
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/AudioFormatSys.aidl
@@ -0,0 +1,161 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+package android.media;
+
+/**
+ * Audio format  is a 32-bit word that consists of:
+ *   main format field (upper 8 bits)
+ *   sub format field (lower 24 bits).
+ *
+ * The main format indicates the main codec type. The sub format field indicates
+ * options and parameters for each format. The sub format is mainly used for
+ * record to indicate for instance the requested bitrate or profile.  It can
+ * also be used for certain formats to give informations not present in the
+ * encoded audio stream (e.g. octet alignement for AMR).
+ *
+ * This type corresponds to enums in system/audio.h, whereas 'AudioFormat.aidl'
+ * located in frameworks/base/media/java/android/media is the type used by SDK.
+ * Both types are in the 'android.media' package.
+ *
+ * {@hide}
+ */
+@Backing(type="int")
+enum AudioFormatSys {
+   /**
+    * Framework use only, do not constitute valid formats.
+    */
+   MAIN_MASK = 0xFF000000,
+   SUB_MASK = 0x00FFFFFF,
+   INVALID = 0xFFFFFFFF,
+   PCM = 0x00000000,
+
+   DEFAULT = 0,
+
+   PCM_16_BIT = 0x1,
+   PCM_8_BIT = 0x2,
+   PCM_32_BIT = 0x3,
+   PCM_8_24_BIT = 0x4,
+   PCM_FLOAT = 0x5,
+   PCM_24_BIT_PACKED = 0x6,
+   MP3 = 0x01000000,
+   AMR_NB = 0x02000000,
+   AMR_WB = 0x03000000,
+   AAC = 0x04000000,
+   AAC_MAIN = 0x04000001,
+   AAC_LC = 0x04000002,
+   AAC_SSR = 0x04000004,
+   AAC_LTP = 0x04000008,
+   AAC_HE_V1 = 0x04000010,
+   AAC_SCALABLE = 0x04000020,
+   AAC_ERLC = 0x04000040,
+   AAC_LD = 0x04000080,
+   AAC_HE_V2 = 0x040000100,
+   AAC_ELD = 0x040000200,
+   AAC_XHE = 0x040000300,
+   /**
+    * Deprecated, Use AAC_HE_V1.
+    */
+   HE_AAC_V1 = 0x05000000,
+   /**
+    * Deprecated, Use AAC_HE_V2.
+    */
+   HE_AAC_V2 = 0x06000000,
+   VORBIS = 0x07000000,
+   OPUS = 0x08000000,
+   AC3 = 0x09000000,
+   E_AC3 = 0x0A000000,
+   E_AC3_JOC = 0x0A000001,
+   DTS = 0x0B000000,
+   DTS_HD = 0x0C000000,
+   IEC61937 = 0x0D000000,
+   DOLBY_TRUEHD = 0x0E000000,
+   EVRC = 0x10000000,
+   EVRCB = 0x11000000,
+   EVRCWB = 0x12000000,
+   EVRCNW = 0x13000000,
+   AAC_ADIF = 0x14000000,
+   WMA = 0x15000000,
+   WMA_PRO = 0x16000000,
+   AMR_WB_PLUS = 0x17000000,
+   MP2 = 0x18000000,
+   QCELP = 0x19000000,
+   DSD = 0x1A000000,
+   FLAC = 0x1B000000,
+   ALAC = 0x1C000000,
+   APE = 0x1D000000,
+   AAC_ADTS = 0x1E000000,
+   AAC_ADTS_MAIN = 0x1E000001,
+   AAC_ADTS_LC = 0x1E000002,
+   AAC_ADTS_SSR = 0x1E000004,
+   AAC_ADTS_LTP = 0x1E000008,
+   AAC_ADTS_HE_V1 = 0x1E000010,
+   AAC_ADTS_SCALABLE = 0x1E000020,
+   AAC_ADTS_ERLC = 0x1E000040,
+   AAC_ADTS_LD = 0x1E000080,
+   AAC_ADTS_HE_V2 = 0x1E000100,
+   AAC_ADTS_ELD = 0x1E000200,
+   AAC_ADTS_XHE = 0x1E000300,
+   SBC = 0x1F000000,
+   APTX = 0x20000000,
+   APTX_HD = 0x21000000,
+   AC4 = 0x22000000,
+   LDAC = 0x23000000,
+   MAT = 0x24000000,
+   MAT_1_0 = 0x24000001,
+   MAT_2_0 = 0x24000002,
+   MAT_2_1 = 0x24000003,
+   AAC_LATM = 0x25000000,
+   AAC_LATM_LC = 0x25000002,
+   AAC_LATM_HE_V1 = 0x25000010,
+   AAC_LATM_HE_V2 = 0x25000100,
+   CELT = 0x26000000,
+   APTX_ADAPTIVE = 0x27000000,
+   LHDC = 0x28000000,
+   LHDC_LL = 0x29000000,
+   APTX_TWSP = 0x2A000000,
+   LC3 = 0x2B000000,
+   MPEGH = 0x2C000000,
+   MPEGH_BL_L3 = 0x2C000013,
+   MPEGH_BL_L4 = 0x2C000014,
+   MPEGH_LC_L3 = 0x2C000023,
+   MPEGH_LC_L4 = 0x2C000024,
+   IEC60958 = 0x2D000000,
+   DTS_UHD = 0x2E000000,
+   DRA = 0x2F000000,
+   /**
+    * Subformats.
+    */
+   AAC_SUB_MAIN = 0x1,
+   AAC_SUB_LC = 0x2,
+   AAC_SUB_SSR = 0x4,
+   AAC_SUB_LTP = 0x8,
+   AAC_SUB_HE_V1 = 0x10,
+   AAC_SUB_SCALABLE = 0x20,
+   AAC_SUB_ERLC = 0x40,
+   AAC_SUB_LD = 0x80,
+   AAC_SUB_HE_V2 = 0x100,
+   AAC_SUB_ELD = 0x200,
+   AAC_SUB_XHE = 0x300,
+   E_AC3_SUB_JOC = 0x1,
+   MAT_SUB_1_0 = 0x1,
+   MAT_SUB_2_0 = 0x2,
+   MAT_SUB_2_1 = 0x3,
+   MPEGH_SUB_BL_L3 = 0x13,
+   MPEGH_SUB_BL_L4 = 0x14,
+   MPEGH_SUB_LC_L3 = 0x23,
+   MPEGH_SUB_LC_L4 = 0x24,
+}
diff --git a/media/libaudioclient/aidl/android/media/AudioFormatType.aidl b/media/libaudioclient/aidl/android/media/AudioFormatType.aidl
new file mode 100644
index 0000000..31ed2be
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/AudioFormatType.aidl
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+package android.media;
+
+/**
+ * The type of the audio format. Only used as part of 'AudioFormatDescription'
+ * structure.
+ */
+@Backing(type="byte")
+enum AudioFormatType {
+    /**
+     * "Default" type is used when the client does not care about the actual
+     * format. All fields of 'AudioFormatDescription' must have default / empty
+     * / null values.
+     */
+    DEFAULT = 0,
+    /**
+     * When the 'encoding' field of 'AudioFormatDescription' is not empty, it
+     * specifies the codec used for bitstream (non-PCM) data. It is also used
+     * in the case when the bitstream data is encapsulated into a PCM stream,
+     * see the documentation for 'AudioFormatDescription'.
+     */
+    NON_PCM = DEFAULT,
+    /**
+     * PCM type. The 'pcm' field of 'AudioFormatDescription' is used to specify
+     * the actual sample size and representation.
+     */
+    PCM = 1,
+    /**
+     * Value reserved for system use only. HALs must never return this value to
+     * the system or accept it from the system.
+     */
+    SYS_RESERVED_INVALID = -1,
+}
diff --git a/media/libaudioclient/aidl/android/media/AudioGain.aidl b/media/libaudioclient/aidl/android/media/AudioGain.aidl
index 048b295..58cf1c9 100644
--- a/media/libaudioclient/aidl/android/media/AudioGain.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioGain.aidl
@@ -16,6 +16,8 @@
 
 package android.media;
 
+import android.media.AudioChannelMask;
+
 /**
  * {@hide}
  */
@@ -25,8 +27,7 @@
     boolean useForVolume;
     /** Bitmask, indexed by AudioGainMode. */
     int mode;
-    /** Interpreted as audio_channel_mask_t. */
-    int channelMask;
+    AudioChannelMask channelMask;
     int minValue;
     int maxValue;
     int defaultValue;
diff --git a/media/libaudioclient/aidl/android/media/AudioGainConfig.aidl b/media/libaudioclient/aidl/android/media/AudioGainConfig.aidl
index b93c2dc..67b77a5 100644
--- a/media/libaudioclient/aidl/android/media/AudioGainConfig.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioGainConfig.aidl
@@ -16,6 +16,8 @@
 
 package android.media;
 
+import android.media.AudioChannelMask;
+
 /**
  * {@hide}
  */
@@ -28,9 +30,8 @@
 
     /**
      * Channels which gain value follows. N/A in joint mode.
-     * Interpreted as audio_channel_mask_t.
      */
-    int channelMask;
+    AudioChannelMask channelMask;
 
     /**
      * Gain values in millibels.
diff --git a/media/libaudioclient/aidl/android/media/AudioIoDescriptor.aidl b/media/libaudioclient/aidl/android/media/AudioIoDescriptor.aidl
index 876ef9b..80dfdcd 100644
--- a/media/libaudioclient/aidl/android/media/AudioIoDescriptor.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioIoDescriptor.aidl
@@ -16,8 +16,9 @@
 
 package android.media;
 
+import android.media.AudioChannelMask;
+import android.media.AudioFormatSys;
 import android.media.AudioPatch;
-import android.media.audio.common.AudioFormat;
 
 /**
  * {@hide}
@@ -27,9 +28,8 @@
     int ioHandle;
     AudioPatch patch;
     int samplingRate;
-    AudioFormat format;
-    /** Interpreted as audio_channel_mask_t. */
-    int channelMask;
+    AudioFormatSys format;
+    AudioChannelMask channelMask;
     long frameCount;
     long frameCountHAL;
     /** Only valid for output. */
diff --git a/media/libaudioclient/aidl/android/media/AudioOffloadInfo.aidl b/media/libaudioclient/aidl/android/media/AudioOffloadInfo.aidl
index c86b3f0..693c818 100644
--- a/media/libaudioclient/aidl/android/media/AudioOffloadInfo.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioOffloadInfo.aidl
@@ -20,7 +20,7 @@
 import android.media.AudioEncapsulationMode;
 import android.media.AudioStreamType;
 import android.media.AudioUsage;
-import android.media.audio.common.AudioFormat;
+import android.media.AudioFormatSys;
 
 /**
  * {@hide}
diff --git a/media/libaudioclient/aidl/android/media/AudioPortConfig.aidl b/media/libaudioclient/aidl/android/media/AudioPortConfig.aidl
index 2dd30a4..7489792 100644
--- a/media/libaudioclient/aidl/android/media/AudioPortConfig.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioPortConfig.aidl
@@ -16,13 +16,14 @@
 
 package android.media;
 
+import android.media.AudioChannelMask;
 import android.media.AudioGainConfig;
 import android.media.AudioIoFlags;
 import android.media.AudioPortConfigExt;
 import android.media.AudioPortConfigType;
 import android.media.AudioPortRole;
 import android.media.AudioPortType;
-import android.media.audio.common.AudioFormat;
+import android.media.AudioFormatSys;
 
 /**
  * {@hide}
@@ -43,14 +44,12 @@
     int sampleRate;
     /**
      * Channel mask, if applicable.
-     * Interpreted as audio_channel_mask_t.
-     * TODO: bitmask?
      */
-    int channelMask;
+    AudioChannelMask channelMask;
     /**
      * Format, if applicable.
      */
-    AudioFormat format;
+    AudioFormatSys format;
     /** Gain to apply, if applicable. */
     AudioGainConfig gain;
     /** Framework only: HW_AV_SYNC, DIRECT, ... */
diff --git a/media/libaudioclient/aidl/android/media/AudioProfile.aidl b/media/libaudioclient/aidl/android/media/AudioProfile.aidl
index afb288f..0de7ca9 100644
--- a/media/libaudioclient/aidl/android/media/AudioProfile.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioProfile.aidl
@@ -16,8 +16,9 @@
 
 package android.media;
 
+import android.media.AudioChannelMask;
 import android.media.AudioEncapsulationType;
-import android.media.audio.common.AudioFormat;
+import android.media.AudioFormatSys;
 
 /**
  * {@hide}
@@ -25,9 +26,8 @@
 parcelable AudioProfile {
     @utf8InCpp String name;
     /** The format for an audio profile should only be set when initialized. */
-    AudioFormat format;
-    /** Interpreted as audio_channel_mask_t. */
-    int[] channelMasks;
+    AudioFormatSys format;
+    AudioChannelMask[] channelMasks;
     int[] samplingRates;
     boolean isDynamicFormat;
     boolean isDynamicChannels;
diff --git a/media/libaudioclient/aidl/android/media/IAudioFlingerService.aidl b/media/libaudioclient/aidl/android/media/IAudioFlingerService.aidl
index d2cae6d..98a3e3b 100644
--- a/media/libaudioclient/aidl/android/media/IAudioFlingerService.aidl
+++ b/media/libaudioclient/aidl/android/media/IAudioFlingerService.aidl
@@ -16,6 +16,7 @@
 
 package android.media;
 
+import android.media.AudioChannelMask;
 import android.media.AudioMode;
 import android.media.AudioPatch;
 import android.media.AudioPort;
@@ -41,7 +42,7 @@
 import android.media.MicrophoneInfoData;
 import android.media.RenderPosition;
 import android.media.TrackSecondaryOutputInfo;
-import android.media.audio.common.AudioFormat;
+import android.media.AudioFormatSys;
 
 /**
  * {@hide}
@@ -62,7 +63,7 @@
      */
     int sampleRate(int /* audio_io_handle_t */ ioHandle);
 
-    AudioFormat format(int /* audio_io_handle_t */ output);
+    AudioFormatSys format(int /* audio_io_handle_t */ output);
 
     long frameCount(int /* audio_io_handle_t */ ioHandle);
 
@@ -115,8 +116,8 @@
     // Retrieve the audio recording buffer size in bytes.
     // FIXME This API assumes a route, and so should be deprecated.
     long getInputBufferSize(int sampleRate,
-                            AudioFormat format,
-                            int /* audio_channel_mask_t */ channelMask);
+                            AudioFormatSys format,
+                            AudioChannelMask channelMask);
 
     OpenOutputResponse openOutput(in OpenOutputRequest request);
     int /* audio_io_handle_t */ openDuplicateOutput(int /* audio_io_handle_t */ output1,
diff --git a/media/libaudioclient/aidl/android/media/IAudioPolicyService.aidl b/media/libaudioclient/aidl/android/media/IAudioPolicyService.aidl
index 65bcd82..184b024 100644
--- a/media/libaudioclient/aidl/android/media/IAudioPolicyService.aidl
+++ b/media/libaudioclient/aidl/android/media/IAudioPolicyService.aidl
@@ -16,10 +16,9 @@
 
 package android.media;
 
+import android.media.AudioFormatSys;
 import android.content.AttributionSourceState;
 
-import android.media.audio.common.AudioFormat;
-
 import android.media.AudioAttributesEx;
 import android.media.AudioAttributesInternal;
 import android.media.AudioConfig;
@@ -63,13 +62,13 @@
     void setDeviceConnectionState(in AudioDevice device,
                                   in AudioPolicyDeviceState state,
                                   @utf8InCpp String deviceName,
-                                  in AudioFormat encodedFormat);
+                                  in AudioFormatSys encodedFormat);
 
     AudioPolicyDeviceState getDeviceConnectionState(in AudioDevice device);
 
     void handleDeviceConfigChange(in AudioDevice device,
                                   @utf8InCpp String deviceName,
-                                  in AudioFormat encodedFormat);
+                                  in AudioFormatSys encodedFormat);
 
     void setPhoneState(AudioMode state, int /* uid_t */ uid);
 
@@ -279,7 +278,7 @@
      * number of elements without actually retrieving them.
      */
     void getSurroundFormats(inout Int count,
-                            out AudioFormat[] formats,
+                            out AudioFormatSys[] formats,
                             out boolean[] formatsEnabled);
 
     /**
@@ -291,11 +290,11 @@
      * number of elements without actually retrieving them.
      */
     void getReportedSurroundFormats(inout Int count,
-                                    out AudioFormat[] formats);
+                                    out AudioFormatSys[] formats);
 
-    AudioFormat[] getHwOffloadEncodingFormatsSupportedForA2DP();
+    AudioFormatSys[] getHwOffloadEncodingFormatsSupportedForA2DP();
 
-    void setSurroundFormatEnabled(AudioFormat audioFormat, boolean enabled);
+    void setSurroundFormatEnabled(AudioFormatSys audioFormat, boolean enabled);
 
     void setAssistantUid(int /* uid_t */ uid);
 
diff --git a/media/libaudioclient/aidl/android/media/PcmType.aidl b/media/libaudioclient/aidl/android/media/PcmType.aidl
new file mode 100644
index 0000000..c9e327c
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/PcmType.aidl
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+package android.media;
+
+/**
+ * The type of the encoding used for representing PCM samples. Only used as
+ * part of 'AudioFormatDescription' structure.
+ */
+@Backing(type="byte")
+enum PcmType {
+    /**
+     * "Default" value used when the type 'AudioFormatDescription' is "default".
+     */
+    DEFAULT = 0,
+    /**
+     * Unsigned 8-bit integer.
+     */
+    UINT_8_BIT = DEFAULT,
+    /**
+     * Signed 16-bit integer.
+     */
+    INT_16_BIT = 1,
+    /**
+     * Signed 32-bit integer.
+     */
+    INT_32_BIT = 2,
+    /**
+     * Q8.24 fixed point format.
+     */
+    FIXED_Q_8_24 = 3,
+    /**
+     * IEEE 754 32-bit floating point format.
+     */
+    FLOAT_32_BIT = 4,
+    /**
+     * Signed 24-bit integer.
+     */
+    INT_24_BIT = 5,
+}
diff --git a/media/libaudioclient/include/media/AidlConversion.h b/media/libaudioclient/include/media/AidlConversion.h
index 4ec69c7..422d94f 100644
--- a/media/libaudioclient/include/media/AidlConversion.h
+++ b/media/libaudioclient/include/media/AidlConversion.h
@@ -25,11 +25,13 @@
 #include <android/media/AudioClient.h>
 #include <android/media/AudioConfig.h>
 #include <android/media/AudioConfigBase.h>
+#include <android/media/AudioDeviceDescription.h>
 #include <android/media/AudioDualMonoMode.h>
 #include <android/media/AudioEncapsulationMode.h>
 #include <android/media/AudioEncapsulationMetadataType.h>
 #include <android/media/AudioEncapsulationType.h>
 #include <android/media/AudioFlag.h>
+#include <android/media/AudioFormatDescription.h>
 #include <android/media/AudioGain.h>
 #include <android/media/AudioGainMode.h>
 #include <android/media/AudioInputFlags.h>
@@ -96,8 +98,10 @@
 ConversionResult<unsigned int> aidl2legacy_int32_t_config_mask(int32_t aidl);
 ConversionResult<int32_t> legacy2aidl_config_mask_int32_t(unsigned int legacy);
 
-ConversionResult<audio_channel_mask_t> aidl2legacy_int32_t_audio_channel_mask_t(int32_t aidl);
-ConversionResult<int32_t> legacy2aidl_audio_channel_mask_t_int32_t(audio_channel_mask_t legacy);
+ConversionResult<audio_channel_mask_t> aidl2legacy_AudioChannelMask_audio_channel_mask_t(
+        media::AudioChannelMask aidl);
+ConversionResult<media::AudioChannelMask> legacy2aidl_audio_channel_mask_t_AudioChannelMask(
+        audio_channel_mask_t legacy);
 
 ConversionResult<pid_t> aidl2legacy_int32_t_pid_t(int32_t aidl);
 ConversionResult<int32_t> legacy2aidl_pid_t_int32_t(pid_t legacy);
@@ -132,8 +136,18 @@
         audio_port_type_t legacy);
 
 ConversionResult<audio_format_t> aidl2legacy_AudioFormat_audio_format_t(
-        media::audio::common::AudioFormat aidl);
-ConversionResult<media::audio::common::AudioFormat> legacy2aidl_audio_format_t_AudioFormat(
+        media::AudioFormatSys aidl);
+ConversionResult<media::AudioFormatSys> legacy2aidl_audio_format_t_AudioFormat(
+        audio_format_t legacy);
+
+ConversionResult<audio_devices_t> aidl2legacy_AudioDeviceDescription_audio_devices_t(
+        const media::AudioDeviceDescription& aidl);
+ConversionResult<media::AudioDeviceDescription> legacy2aidl_audio_devices_t_AudioDeviceDescription(
+        audio_devices_t legacy);
+
+ConversionResult<audio_format_t> aidl2legacy_AudioFormatDescription_audio_format_t(
+        const media::AudioFormatDescription& aidl);
+ConversionResult<media::AudioFormatDescription> legacy2aidl_audio_format_t_AudioFormatDescription(
         audio_format_t legacy);
 
 ConversionResult<audio_gain_mode_t>
diff --git a/media/libaudioclient/include/media/AudioCommonTypes.h b/media/libaudioclient/include/media/AudioCommonTypes.h
index 5dfe5fc..613d6bd 100644
--- a/media/libaudioclient/include/media/AudioCommonTypes.h
+++ b/media/libaudioclient/include/media/AudioCommonTypes.h
@@ -17,9 +17,49 @@
 
 #pragma once
 
+#include <functional>
+
+#include <android/media/AudioDeviceDescription.h>
+#include <android/media/AudioFormatDescription.h>
+#include <binder/Parcelable.h>
 #include <system/audio.h>
 #include <system/audio_policy.h>
-#include <binder/Parcelable.h>
+
+namespace {
+// see boost::hash_combine
+#if defined(__clang__)
+__attribute__((no_sanitize("unsigned-integer-overflow")))
+#endif
+static size_t hash_combine(size_t seed, size_t v) {
+    return std::hash<size_t>{}(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
+}
+}
+
+namespace std {
+
+// Note: when extending Audio{Device|Format}Description we need to account for the
+// possibility of comparison between different versions of it, e.g. a HAL
+// may be using a previous version of the AIDL interface.
+template<> struct hash<android::media::AudioDeviceDescription>
+{
+    std::size_t operator()(const android::media::AudioDeviceDescription& add) const noexcept {
+        return hash_combine(
+                std::hash<android::media::AudioDeviceType>{}(add.type),
+                std::hash<std::string>{}(add.connection));
+    }
+};
+
+template<> struct hash<android::media::AudioFormatDescription>
+{
+    std::size_t operator()(const android::media::AudioFormatDescription& afd) const noexcept {
+        return hash_combine(
+                std::hash<android::media::AudioFormatType>{}(afd.type),
+                hash_combine(
+                        std::hash<android::media::PcmType>{}(afd.pcm),
+                        std::hash<std::string>{}(afd.encoding)));
+    }
+};
+}  // namespace std
 
 namespace android {
 
@@ -45,4 +85,3 @@
 static const volume_group_t VOLUME_GROUP_NONE = static_cast<volume_group_t>(-1);
 
 } // namespace android
-
diff --git a/media/libaudioclient/include/media/IAudioFlinger.h b/media/libaudioclient/include/media/IAudioFlinger.h
index 327b37e..634326e 100644
--- a/media/libaudioclient/include/media/IAudioFlinger.h
+++ b/media/libaudioclient/include/media/IAudioFlinger.h
@@ -562,7 +562,7 @@
     Status createRecord(const media::CreateRecordRequest& request,
                         media::CreateRecordResponse* _aidl_return) override;
     Status sampleRate(int32_t ioHandle, int32_t* _aidl_return) override;
-    Status format(int32_t output, media::audio::common::AudioFormat* _aidl_return) override;
+    Status format(int32_t output, media::AudioFormatSys* _aidl_return) override;
     Status frameCount(int32_t ioHandle, int64_t* _aidl_return) override;
     Status latency(int32_t output, int32_t* _aidl_return) override;
     Status setMasterVolume(float value) override;
@@ -584,8 +584,8 @@
     Status
     getParameters(int32_t ioHandle, const std::string& keys, std::string* _aidl_return) override;
     Status registerClient(const sp<media::IAudioFlingerClient>& client) override;
-    Status getInputBufferSize(int32_t sampleRate, media::audio::common::AudioFormat format,
-                              int32_t channelMask, int64_t* _aidl_return) override;
+    Status getInputBufferSize(int32_t sampleRate, media::AudioFormatSys format,
+                              media::AudioChannelMask channelMask, int64_t* _aidl_return) override;
     Status openOutput(const media::OpenOutputRequest& request,
                       media::OpenOutputResponse* _aidl_return) override;
     Status openDuplicateOutput(int32_t output1, int32_t output2, int32_t* _aidl_return) override;
diff --git a/media/libaudioclient/tests/Android.bp b/media/libaudioclient/tests/Android.bp
index def7ca6..2279244 100644
--- a/media/libaudioclient/tests/Android.bp
+++ b/media/libaudioclient/tests/Android.bp
@@ -9,10 +9,34 @@
 
 cc_defaults {
     name: "libaudioclient_tests_defaults",
+    test_suites: ["device-tests"],
     cflags: [
         "-Wall",
         "-Werror",
     ],
+    sanitize: {
+        misc_undefined: [
+            "unsigned-integer-overflow",
+            "signed-integer-overflow",
+        ],
+    },
+}
+
+cc_test {
+    name: "audio_aidl_conversion_tests",
+    defaults: ["libaudioclient_tests_defaults"],
+    srcs: ["audio_aidl_legacy_conversion_tests.cpp"],
+    shared_libs: [
+        "libbinder",
+        "libcutils",
+        "liblog",
+        "libutils",
+    ],
+    static_libs: [
+        "audioclient-types-aidl-cpp",
+        "libaudioclient_aidl_conversion",
+        "libstagefright_foundation",
+    ],
 }
 
 cc_test {
@@ -30,8 +54,10 @@
 cc_test {
     name: "test_create_audiotrack",
     defaults: ["libaudioclient_tests_defaults"],
-    srcs: ["test_create_audiotrack.cpp",
-           "test_create_utils.cpp"],
+    srcs: [
+        "test_create_audiotrack.cpp",
+        "test_create_utils.cpp",
+    ],
     header_libs: [
         "libmedia_headers",
         "libmediametrics_headers",
@@ -49,8 +75,10 @@
 cc_test {
     name: "test_create_audiorecord",
     defaults: ["libaudioclient_tests_defaults"],
-    srcs: ["test_create_audiorecord.cpp",
-           "test_create_utils.cpp"],
+    srcs: [
+        "test_create_audiorecord.cpp",
+        "test_create_utils.cpp",
+    ],
     header_libs: [
         "libmedia_headers",
         "libmediametrics_headers",
diff --git a/media/libaudioclient/tests/audio_aidl_legacy_conversion_tests.cpp b/media/libaudioclient/tests/audio_aidl_legacy_conversion_tests.cpp
new file mode 100644
index 0000000..ca609ab
--- /dev/null
+++ b/media/libaudioclient/tests/audio_aidl_legacy_conversion_tests.cpp
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2021 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 <gtest/gtest.h>
+
+#include <media/AudioCommonTypes.h>
+#include <media/AidlConversion.h>
+
+using namespace android;
+using namespace android::aidl_utils;
+
+namespace {
+
+size_t hash(const media::AudioDeviceDescription& add) {
+    return std::hash<media::AudioDeviceDescription>{}(add);
+}
+
+size_t hash(const media::AudioFormatDescription& afd) {
+    return std::hash<media::AudioFormatDescription>{}(afd);
+}
+
+media::AudioDeviceDescription make_AudioDeviceDescription(media::AudioDeviceType type,
+        const std::string& connection = "") {
+    media::AudioDeviceDescription result;
+    result.type = type;
+    result.connection = connection;
+    return result;
+}
+
+media::AudioDeviceDescription make_ADD_None() {
+    return media::AudioDeviceDescription{};
+}
+
+media::AudioDeviceDescription make_ADD_DefaultIn() {
+    return make_AudioDeviceDescription(media::AudioDeviceType::IN_DEFAULT);
+}
+
+media::AudioDeviceDescription make_ADD_DefaultOut() {
+    return make_AudioDeviceDescription(media::AudioDeviceType::OUT_DEFAULT);
+}
+
+media::AudioDeviceDescription make_ADD_WiredHeadset() {
+    return make_AudioDeviceDescription(media::AudioDeviceType::OUT_HEADSET,
+            media::AudioDeviceDescription::CONNECTION_ANALOG());
+}
+
+media::AudioDeviceDescription make_ADD_BtScoHeadset() {
+    return make_AudioDeviceDescription(media::AudioDeviceType::OUT_HEADSET,
+            media::AudioDeviceDescription::CONNECTION_BT_SCO());
+}
+
+media::AudioFormatDescription make_AudioFormatDescription(media::AudioFormatType type) {
+    media::AudioFormatDescription result;
+    result.type = type;
+    return result;
+}
+
+media::AudioFormatDescription make_AudioFormatDescription(media::PcmType pcm) {
+    auto result = make_AudioFormatDescription(media::AudioFormatType::PCM);
+    result.pcm = pcm;
+    return result;
+}
+
+media::AudioFormatDescription make_AudioFormatDescription(const std::string& encoding) {
+    media::AudioFormatDescription result;
+    result.encoding = encoding;
+    return result;
+}
+
+media::AudioFormatDescription make_AudioFormatDescription(media::PcmType transport,
+        const std::string& encoding) {
+    auto result = make_AudioFormatDescription(encoding);
+    result.pcm = transport;
+    return result;
+}
+
+media::AudioFormatDescription make_AFD_Default() {
+    return media::AudioFormatDescription{};
+}
+
+media::AudioFormatDescription make_AFD_Invalid() {
+    return make_AudioFormatDescription(media::AudioFormatType::SYS_RESERVED_INVALID);
+}
+
+media::AudioFormatDescription make_AFD_Pcm16Bit() {
+    return make_AudioFormatDescription(media::PcmType::INT_16_BIT);
+}
+
+media::AudioFormatDescription make_AFD_Bitstream() {
+    return make_AudioFormatDescription("example");
+}
+
+media::AudioFormatDescription make_AFD_Encap() {
+    return make_AudioFormatDescription(media::PcmType::INT_16_BIT, "example.encap");
+}
+
+media::AudioFormatDescription make_AFD_Encap_with_Enc() {
+    auto afd = make_AFD_Encap();
+    afd.encoding += "+example";
+    return afd;
+}
+
+}  // namespace
+
+// Verify that two independently constructed ADDs/AFDs have the same hash.
+// This ensures that regardless of whether the ADD/AFD instance originates
+// from, it can be correctly compared to other ADD/AFD instance. Thus,
+// for example, a 16-bit integer format description provided by HAL
+// is identical to the same format description constructed by the framework.
+class HashIdentityTest : public ::testing::Test {
+  public:
+    template<typename T> void verifyHashIdentity(const std::vector<std::function<T()>>& valueGens) {
+        for (size_t i = 0; i < valueGens.size(); ++i) {
+            for (size_t j = 0; j < valueGens.size(); ++j) {
+                if (i == j) {
+                    EXPECT_EQ(hash(valueGens[i]()), hash(valueGens[i]())) << i;
+                } else {
+                    EXPECT_NE(hash(valueGens[i]()), hash(valueGens[j]())) << i << ", " << j;
+                }
+            }
+        }
+    }
+};
+
+TEST_F(HashIdentityTest, AudioDeviceDescriptionHashIdentity) {
+    verifyHashIdentity<media::AudioDeviceDescription>({
+            make_ADD_None, make_ADD_DefaultIn, make_ADD_DefaultOut, make_ADD_WiredHeadset,
+            make_ADD_BtScoHeadset});
+}
+
+TEST_F(HashIdentityTest, AudioFormatDescriptionHashIdentity) {
+    verifyHashIdentity<media::AudioFormatDescription>({
+            make_AFD_Default, make_AFD_Invalid, make_AFD_Pcm16Bit, make_AFD_Bitstream,
+            make_AFD_Encap, make_AFD_Encap_with_Enc});
+}
+
+class AudioDeviceDescriptionRoundTripTest :
+        public testing::TestWithParam<media::AudioDeviceDescription> {};
+TEST_P(AudioDeviceDescriptionRoundTripTest, Aidl2Legacy2Aidl) {
+    const auto initial = GetParam();
+    auto conv = aidl2legacy_AudioDeviceDescription_audio_devices_t(initial);
+    ASSERT_TRUE(conv.ok());
+    auto convBack = legacy2aidl_audio_devices_t_AudioDeviceDescription(conv.value());
+    ASSERT_TRUE(convBack.ok());
+    EXPECT_EQ(initial, convBack.value());
+}
+INSTANTIATE_TEST_SUITE_P(AudioDeviceDescriptionRoundTrip,
+        AudioDeviceDescriptionRoundTripTest,
+        testing::Values(media::AudioDeviceDescription{}, make_ADD_DefaultIn(),
+                make_ADD_DefaultOut(), make_ADD_WiredHeadset(), make_ADD_BtScoHeadset()));
+
+class AudioFormatDescriptionRoundTripTest :
+        public testing::TestWithParam<media::AudioFormatDescription> {};
+TEST_P(AudioFormatDescriptionRoundTripTest, Aidl2Legacy2Aidl) {
+    const auto initial = GetParam();
+    auto conv = aidl2legacy_AudioFormatDescription_audio_format_t(initial);
+    ASSERT_TRUE(conv.ok());
+    auto convBack = legacy2aidl_audio_format_t_AudioFormatDescription(conv.value());
+    ASSERT_TRUE(convBack.ok());
+    EXPECT_EQ(initial, convBack.value());
+}
+INSTANTIATE_TEST_SUITE_P(AudioFormatDescriptionRoundTrip,
+        AudioFormatDescriptionRoundTripTest,
+        testing::Values(make_AFD_Invalid(), media::AudioFormatDescription{}, make_AFD_Pcm16Bit()));
diff --git a/media/libaudiofoundation/AudioGain.cpp b/media/libaudiofoundation/AudioGain.cpp
index 1dee938..5cc2b2f 100644
--- a/media/libaudiofoundation/AudioGain.cpp
+++ b/media/libaudiofoundation/AudioGain.cpp
@@ -142,7 +142,7 @@
     parcelable->mode = VALUE_OR_RETURN_STATUS(
             legacy2aidl_audio_gain_mode_t_int32_t_mask(mGain.mode));
     parcelable->channelMask = VALUE_OR_RETURN_STATUS(
-            legacy2aidl_audio_channel_mask_t_int32_t(mGain.channel_mask));
+            legacy2aidl_audio_channel_mask_t_AudioChannelMask(mGain.channel_mask));
     parcelable->minValue = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mGain.min_value));
     parcelable->maxValue = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mGain.max_value));
     parcelable->defaultValue = VALUE_OR_RETURN_STATUS(
@@ -166,7 +166,7 @@
     mGain.mode = VALUE_OR_RETURN_STATUS(
             aidl2legacy_int32_t_audio_gain_mode_t_mask(parcelable.mode));
     mGain.channel_mask = VALUE_OR_RETURN_STATUS(
-            aidl2legacy_int32_t_audio_channel_mask_t(parcelable.channelMask));
+            aidl2legacy_AudioChannelMask_audio_channel_mask_t(parcelable.channelMask));
     mGain.min_value = VALUE_OR_RETURN_STATUS(convertIntegral<int>(parcelable.minValue));
     mGain.max_value = VALUE_OR_RETURN_STATUS(convertIntegral<int>(parcelable.maxValue));
     mGain.default_value = VALUE_OR_RETURN_STATUS(convertIntegral<int>(parcelable.defaultValue));
diff --git a/media/libaudiofoundation/AudioPort.cpp b/media/libaudiofoundation/AudioPort.cpp
index fafabd9..fc67c59 100644
--- a/media/libaudiofoundation/AudioPort.cpp
+++ b/media/libaudiofoundation/AudioPort.cpp
@@ -340,13 +340,13 @@
     parcelable->sampleRate = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mSamplingRate));
     parcelable->format = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_format_t_AudioFormat(mFormat));
     parcelable->channelMask = VALUE_OR_RETURN_STATUS(
-            legacy2aidl_audio_channel_mask_t_int32_t(mChannelMask));
+            legacy2aidl_audio_channel_mask_t_AudioChannelMask(mChannelMask));
     parcelable->id = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_port_handle_t_int32_t(mId));
     parcelable->gain.index = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mGain.index));
     parcelable->gain.mode = VALUE_OR_RETURN_STATUS(
             legacy2aidl_audio_gain_mode_t_int32_t_mask(mGain.mode));
     parcelable->gain.channelMask = VALUE_OR_RETURN_STATUS(
-            legacy2aidl_audio_channel_mask_t_int32_t(mGain.channel_mask));
+            legacy2aidl_audio_channel_mask_t_AudioChannelMask(mGain.channel_mask));
     parcelable->gain.rampDurationMs = VALUE_OR_RETURN_STATUS(
             convertIntegral<int32_t>(mGain.ramp_duration_ms));
     parcelable->gain.values = VALUE_OR_RETURN_STATUS(convertContainer<std::vector<int32_t>>(
@@ -364,13 +364,13 @@
     mSamplingRate = VALUE_OR_RETURN_STATUS(convertIntegral<unsigned int>(parcelable.sampleRate));
     mFormat = VALUE_OR_RETURN_STATUS(aidl2legacy_AudioFormat_audio_format_t(parcelable.format));
     mChannelMask = VALUE_OR_RETURN_STATUS(
-            aidl2legacy_int32_t_audio_channel_mask_t(parcelable.channelMask));
+            aidl2legacy_AudioChannelMask_audio_channel_mask_t(parcelable.channelMask));
     mId = VALUE_OR_RETURN_STATUS(aidl2legacy_int32_t_audio_port_handle_t(parcelable.id));
     mGain.index = VALUE_OR_RETURN_STATUS(convertIntegral<int>(parcelable.gain.index));
     mGain.mode = VALUE_OR_RETURN_STATUS(
             aidl2legacy_int32_t_audio_gain_mode_t_mask(parcelable.gain.mode));
     mGain.channel_mask = VALUE_OR_RETURN_STATUS(
-            aidl2legacy_int32_t_audio_channel_mask_t(parcelable.gain.channelMask));
+            aidl2legacy_AudioChannelMask_audio_channel_mask_t(parcelable.gain.channelMask));
     mGain.ramp_duration_ms = VALUE_OR_RETURN_STATUS(
             convertIntegral<unsigned int>(parcelable.gain.rampDurationMs));
     if (parcelable.gain.values.size() > std::size(mGain.values)) {
diff --git a/media/libaudiofoundation/AudioProfile.cpp b/media/libaudiofoundation/AudioProfile.cpp
index 8ac3f73..7243131 100644
--- a/media/libaudiofoundation/AudioProfile.cpp
+++ b/media/libaudiofoundation/AudioProfile.cpp
@@ -165,8 +165,9 @@
     parcelable.name = mName;
     parcelable.format = VALUE_OR_RETURN(legacy2aidl_audio_format_t_AudioFormat(mFormat));
     parcelable.channelMasks = VALUE_OR_RETURN(
-            convertContainer<std::vector<int32_t>>(mChannelMasks,
-                                                   legacy2aidl_audio_channel_mask_t_int32_t));
+            convertContainer<std::vector<media::AudioChannelMask>>(
+                    mChannelMasks,
+                    legacy2aidl_audio_channel_mask_t_AudioChannelMask));
     parcelable.samplingRates = VALUE_OR_RETURN(
             convertContainer<std::vector<int32_t>>(mSamplingRates,
                                                    convertIntegral<int32_t, uint32_t>));
@@ -194,7 +195,7 @@
     legacy->mFormat = VALUE_OR_RETURN(aidl2legacy_AudioFormat_audio_format_t(parcelable.format));
     legacy->mChannelMasks = VALUE_OR_RETURN(
             convertContainer<ChannelMaskSet>(parcelable.channelMasks,
-                                             aidl2legacy_int32_t_audio_channel_mask_t));
+                                             aidl2legacy_AudioChannelMask_audio_channel_mask_t));
     legacy->mSamplingRates = VALUE_OR_RETURN(
             convertContainer<SampleRateSet>(parcelable.samplingRates,
                                             convertIntegral<uint32_t, int32_t>));
diff --git a/media/libmedia/IMediaPlayer.cpp b/media/libmedia/IMediaPlayer.cpp
index c89c023..c9f361e 100644
--- a/media/libmedia/IMediaPlayer.cpp
+++ b/media/libmedia/IMediaPlayer.cpp
@@ -17,7 +17,6 @@
 
 #include <arpa/inet.h>
 #include <stdint.h>
-#include <sys/types.h>
 
 #include <android/IDataSource.h>
 #include <binder/IPCThreadState.h>
diff --git a/media/libmedia/tests/codeclist/Android.bp b/media/libmedia/tests/codeclist/Android.bp
index 7dd0caa..57af9a9 100644
--- a/media/libmedia/tests/codeclist/Android.bp
+++ b/media/libmedia/tests/codeclist/Android.bp
@@ -25,7 +25,7 @@
 
 cc_test {
     name: "CodecListTest",
-    test_suites: ["device-tests"],
+    test_suites: ["device-tests", "mts"],
     gtest: true,
 
     srcs: [
@@ -41,7 +41,7 @@
         "libstagefright_xmlparser",
         "libutils",
     ],
-
+    compile_multilib: "first",
     cflags: [
         "-Werror",
         "-Wall",
diff --git a/media/libstagefright/MediaCodec.cpp b/media/libstagefright/MediaCodec.cpp
index f2bcebb..13e7279 100644
--- a/media/libstagefright/MediaCodec.cpp
+++ b/media/libstagefright/MediaCodec.cpp
@@ -4691,8 +4691,8 @@
     }
     const CryptoPlugin::SubSample *subSamples;
     size_t numSubSamples;
-    const uint8_t *key;
-    const uint8_t *iv;
+    const uint8_t *key = NULL;
+    const uint8_t *iv = NULL;
     CryptoPlugin::Mode mode = CryptoPlugin::kMode_Unencrypted;
 
     // We allow the simpler queueInputBuffer API to be used even in
@@ -4707,8 +4707,6 @@
 
             subSamples = &ss;
             numSubSamples = 1;
-            key = NULL;
-            iv = NULL;
             pattern.mEncryptBlocks = 0;
             pattern.mSkipBlocks = 0;
         }
diff --git a/media/libstagefright/foundation/MediaDefs.cpp b/media/libstagefright/foundation/MediaDefs.cpp
index ada5d81..0ec5ad5 100644
--- a/media/libstagefright/foundation/MediaDefs.cpp
+++ b/media/libstagefright/foundation/MediaDefs.cpp
@@ -65,7 +65,17 @@
 const char *MEDIA_MIMETYPE_AUDIO_WMA = "audio/x-ms-wma";
 const char *MEDIA_MIMETYPE_AUDIO_MS_ADPCM = "audio/x-adpcm-ms";
 const char *MEDIA_MIMETYPE_AUDIO_DVI_IMA_ADPCM = "audio/x-adpcm-dvi-ima";
-
+const char *MEDIA_MIMETYPE_AUDIO_DTS = "audio/vnd.dts";
+const char *MEDIA_MIMETYPE_AUDIO_DTS_HD = "audio/vnd.dts.hd";
+const char *MEDIA_MIMETYPE_AUDIO_DTS_UHD = "audio/vnd.dts.uhd";
+const char *MEDIA_MIMETYPE_AUDIO_EVRC = "audio/evrc";
+const char *MEDIA_MIMETYPE_AUDIO_EVRCB = "audio/evrcb";
+const char *MEDIA_MIMETYPE_AUDIO_EVRCWB = "audio/evrcwb";
+const char *MEDIA_MIMETYPE_AUDIO_EVRCNW = "audio/evrcnw";
+const char *MEDIA_MIMETYPE_AUDIO_AMR_WB_PLUS = "audio/amr-wb+";
+const char *MEDIA_MIMETYPE_AUDIO_APTX = "audio/aptx";
+const char *MEDIA_MIMETYPE_AUDIO_DRA = "audio/vnd.dra";
+const char *MEDIA_MIMETYPE_AUDIO_AAC_FORMAT = "audio/aac";
 
 const char *MEDIA_MIMETYPE_CONTAINER_MPEG4 = "video/mp4";
 const char *MEDIA_MIMETYPE_CONTAINER_WAV = "audio/x-wav";
diff --git a/media/libstagefright/foundation/include/media/stagefright/foundation/MediaDefs.h b/media/libstagefright/foundation/include/media/stagefright/foundation/MediaDefs.h
index f5cecef..afa0c6d 100644
--- a/media/libstagefright/foundation/include/media/stagefright/foundation/MediaDefs.h
+++ b/media/libstagefright/foundation/include/media/stagefright/foundation/MediaDefs.h
@@ -67,7 +67,17 @@
 extern const char *MEDIA_MIMETYPE_AUDIO_WMA;
 extern const char *MEDIA_MIMETYPE_AUDIO_MS_ADPCM;
 extern const char *MEDIA_MIMETYPE_AUDIO_DVI_IMA_ADPCM;
-
+extern const char *MEDIA_MIMETYPE_AUDIO_DTS;
+extern const char *MEDIA_MIMETYPE_AUDIO_DTS_HD;
+extern const char *MEDIA_MIMETYPE_AUDIO_DTS_UHD;
+extern const char *MEDIA_MIMETYPE_AUDIO_EVRC;
+extern const char *MEDIA_MIMETYPE_AUDIO_EVRCB;
+extern const char *MEDIA_MIMETYPE_AUDIO_EVRCWB;
+extern const char *MEDIA_MIMETYPE_AUDIO_EVRCNW;
+extern const char *MEDIA_MIMETYPE_AUDIO_AMR_WB_PLUS;
+extern const char *MEDIA_MIMETYPE_AUDIO_APTX;
+extern const char *MEDIA_MIMETYPE_AUDIO_DRA;
+extern const char *MEDIA_MIMETYPE_AUDIO_AAC_FORMAT;
 
 extern const char *MEDIA_MIMETYPE_CONTAINER_MPEG4;
 extern const char *MEDIA_MIMETYPE_CONTAINER_WAV;
diff --git a/media/utils/fuzzers/ServiceUtilitiesFuzz.cpp b/media/utils/fuzzers/ServiceUtilitiesFuzz.cpp
index 6e52512..51e8d7a 100644
--- a/media/utils/fuzzers/ServiceUtilitiesFuzz.cpp
+++ b/media/utils/fuzzers/ServiceUtilitiesFuzz.cpp
@@ -17,7 +17,7 @@
 #include <fcntl.h>
 
 #include <functional>
-#include <type_traits>
+#include  <type_traits>
 
 #include <android/content/AttributionSourceState.h>
 #include "fuzzer/FuzzedDataProvider.h"
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 2e866ff..ccb82f2 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -2123,8 +2123,9 @@
                                              audio_port_handle_t *portId)
 {
     ALOGV("%s() source %d, sampling rate %d, format %#x, channel mask %#x, session %d, "
-          "flags %#x attributes=%s", __func__, attr->source, config->sample_rate,
-          config->format, config->channel_mask, session, flags, toString(*attr).c_str());
+          "flags %#x attributes=%s requested device ID %d",
+          __func__, attr->source, config->sample_rate, config->format, config->channel_mask,
+          session, flags, toString(*attr).c_str(), *selectedDeviceId);
 
     status_t status = NO_ERROR;
     audio_source_t halInputSource;
diff --git a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
index 3298f6b..1ebf76b 100644
--- a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
+++ b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
@@ -99,7 +99,7 @@
         const media::AudioDevice& deviceAidl,
         media::AudioPolicyDeviceState stateAidl,
         const std::string& deviceNameAidl,
-        media::audio::common::AudioFormat encodedFormatAidl) {
+        media::AudioFormatSys encodedFormatAidl) {
     audio_devices_t device = VALUE_OR_RETURN_BINDER_STATUS(
             aidl2legacy_int32_t_audio_devices_t(deviceAidl.type));
     audio_policy_dev_state_t state = VALUE_OR_RETURN_BINDER_STATUS(
@@ -149,7 +149,7 @@
 Status AudioPolicyService::handleDeviceConfigChange(
         const media::AudioDevice& deviceAidl,
         const std::string& deviceNameAidl,
-        media::audio::common::AudioFormat encodedFormatAidl) {
+        media::AudioFormatSys encodedFormatAidl) {
     audio_devices_t device = VALUE_OR_RETURN_BINDER_STATUS(
             aidl2legacy_int32_t_audio_devices_t(deviceAidl.type));
     audio_format_t encodedFormat = VALUE_OR_RETURN_BINDER_STATUS(
@@ -1819,7 +1819,7 @@
 }
 
 Status AudioPolicyService::getSurroundFormats(media::Int* count,
-        std::vector<media::audio::common::AudioFormat>* formats,
+        std::vector<media::AudioFormatSys>* formats,
         std::vector<bool>* formatsEnabled) {
     unsigned int numSurroundFormats = VALUE_OR_RETURN_BINDER_STATUS(
             convertIntegral<unsigned int>(count->value));
@@ -1851,7 +1851,7 @@
 }
 
 Status AudioPolicyService::getReportedSurroundFormats(
-        media::Int* count, std::vector<media::audio::common::AudioFormat>* formats) {
+        media::Int* count, std::vector<media::AudioFormatSys>* formats) {
     unsigned int numSurroundFormats = VALUE_OR_RETURN_BINDER_STATUS(
             convertIntegral<unsigned int>(count->value));
     if (numSurroundFormats > MAX_ITEMS_PER_LIST) {
@@ -1877,7 +1877,7 @@
 }
 
 Status AudioPolicyService::getHwOffloadEncodingFormatsSupportedForA2DP(
-        std::vector<media::audio::common::AudioFormat>* _aidl_return) {
+        std::vector<media::AudioFormatSys>* _aidl_return) {
     std::vector<audio_format_t> formats;
 
     if (mAudioPolicyManager == NULL) {
@@ -1888,14 +1888,14 @@
     RETURN_IF_BINDER_ERROR(binderStatusFromStatusT(
             mAudioPolicyManager->getHwOffloadEncodingFormatsSupportedForA2DP(&formats)));
     *_aidl_return = VALUE_OR_RETURN_BINDER_STATUS(
-            convertContainer<std::vector<media::audio::common::AudioFormat>>(
+            convertContainer<std::vector<media::AudioFormatSys>>(
                     formats,
                     legacy2aidl_audio_format_t_AudioFormat));
     return Status::ok();
 }
 
 Status AudioPolicyService::setSurroundFormatEnabled(
-        media::audio::common::AudioFormat audioFormatAidl, bool enabled) {
+        media::AudioFormatSys audioFormatAidl, bool enabled) {
     audio_format_t audioFormat = VALUE_OR_RETURN_BINDER_STATUS(
             aidl2legacy_AudioFormat_audio_format_t(audioFormatAidl));
     if (mAudioPolicyManager == NULL) {
diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
index ac9c20f..b583484 100644
--- a/services/audiopolicy/service/AudioPolicyService.h
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -70,13 +70,13 @@
             const media::AudioDevice& device,
             media::AudioPolicyDeviceState state,
             const std::string& deviceName,
-            media::audio::common::AudioFormat encodedFormat) override;
+            media::AudioFormatSys encodedFormat) override;
     binder::Status getDeviceConnectionState(const media::AudioDevice& device,
                                             media::AudioPolicyDeviceState* _aidl_return) override;
     binder::Status handleDeviceConfigChange(
             const media::AudioDevice& device,
             const std::string& deviceName,
-            media::audio::common::AudioFormat encodedFormat) override;
+            media::AudioFormatSys encodedFormat) override;
     binder::Status setPhoneState(media::AudioMode state, int32_t uid) override;
     binder::Status setForceUse(media::AudioPolicyForceUse usage,
                                media::AudioPolicyForcedConfig config) override;
@@ -189,13 +189,13 @@
     binder::Status getStreamVolumeDB(media::AudioStreamType stream, int32_t index, int32_t device,
                                      float* _aidl_return) override;
     binder::Status getSurroundFormats(media::Int* count,
-                                      std::vector<media::audio::common::AudioFormat>* formats,
+                                      std::vector<media::AudioFormatSys>* formats,
                                       std::vector<bool>* formatsEnabled) override;
     binder::Status getReportedSurroundFormats(
-            media::Int* count, std::vector<media::audio::common::AudioFormat>* formats) override;
+            media::Int* count, std::vector<media::AudioFormatSys>* formats) override;
     binder::Status getHwOffloadEncodingFormatsSupportedForA2DP(
-            std::vector<media::audio::common::AudioFormat>* _aidl_return) override;
-    binder::Status setSurroundFormatEnabled(media::audio::common::AudioFormat audioFormat,
+            std::vector<media::AudioFormatSys>* _aidl_return) override;
+    binder::Status setSurroundFormatEnabled(media::AudioFormatSys audioFormat,
                                             bool enabled) override;
     binder::Status setAssistantUid(int32_t uid) override;
     binder::Status setA11yServicesUids(const std::vector<int32_t>& uids) override;
diff --git a/services/audiopolicy/tests/Android.bp b/services/audiopolicy/tests/Android.bp
index b296fb0..8fbe8b2 100644
--- a/services/audiopolicy/tests/Android.bp
+++ b/services/audiopolicy/tests/Android.bp
@@ -25,7 +25,7 @@
         "libmedia_helper",
         "libutils",
         "libxml2",
-        "libpermission",
+        "framework-permission-aidl-cpp",
         "libbinder",
     ],
 
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index 3deea6b..c380711 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -1861,6 +1861,27 @@
     CameraServiceProxyWrapper::logOpen(cameraId, facing, clientPackageName,
             effectiveApiLevel, isNdk, openLatencyMs);
 
+    {
+        Mutex::Autolock lock(mInjectionParametersLock);
+        if (cameraId == mInjectionInternalCamId && mInjectionInitPending) {
+            mInjectionInitPending = false;
+            status_t res = NO_ERROR;
+            auto clientDescriptor = mActiveClientManager.get(mInjectionInternalCamId);
+            if (clientDescriptor != nullptr) {
+                BasicClient* baseClientPtr = clientDescriptor->getValue().get();
+                res = baseClientPtr->injectCamera(mInjectionExternalCamId, mCameraProviderManager);
+                if (res != OK) {
+                    mInjectionStatusListener->notifyInjectionError(mInjectionExternalCamId, res);
+                }
+            } else {
+                ALOGE("%s: Internal camera ID = %s 's client does not exist!",
+                        __FUNCTION__, mInjectionInternalCamId.string());
+                res = NO_INIT;
+                mInjectionStatusListener->notifyInjectionError(mInjectionExternalCamId, res);
+            }
+        }
+    }
+
     return ret;
 }
 
@@ -2521,7 +2542,7 @@
         const String16& externalCamId,
         const sp<ICameraInjectionCallback>& callback,
         /*out*/
-        sp<hardware::camera2::ICameraInjectionSession>* cameraInjectionSession) {
+        sp<ICameraInjectionSession>* cameraInjectionSession) {
     ATRACE_CALL();
 
     if (!checkCallingPermission(sCameraInjectExternalCameraPermission)) {
@@ -2538,18 +2559,30 @@
         __FUNCTION__, String8(packageName).string(),
         String8(internalCamId).string(), String8(externalCamId).string());
 
-    binder::Status ret = binder::Status::ok();
-    // TODO: Implement the injection camera function.
-    // ret = internalInjectCamera(...);
-    // if(!ret.isOk()) {
-    //     mInjectionStatusListener->notifyInjectionError(...);
-    //     return ret;
-    // }
-
+    {
+        Mutex::Autolock lock(mInjectionParametersLock);
+        mInjectionInternalCamId = String8(internalCamId);
+        mInjectionExternalCamId = String8(externalCamId);
+        status_t res = NO_ERROR;
+        auto clientDescriptor = mActiveClientManager.get(mInjectionInternalCamId);
+        // If the client already exists, we can directly connect to the camera device through the
+        // client's injectCamera(), otherwise we need to wait until the client is established
+        // (execute connectHelper()) before injecting the camera to the camera device.
+        if (clientDescriptor != nullptr) {
+            mInjectionInitPending = false;
+            BasicClient* baseClientPtr = clientDescriptor->getValue().get();
+            res = baseClientPtr->injectCamera(mInjectionExternalCamId, mCameraProviderManager);
+            if(res != OK) {
+                mInjectionStatusListener->notifyInjectionError(mInjectionExternalCamId, res);
+            }
+        } else {
+            mInjectionInitPending = true;
+        }
+    }
     mInjectionStatusListener->addListener(callback);
     *cameraInjectionSession = new CameraInjectionSession(this);
 
-    return ret;
+    return binder::Status::ok();
 }
 
 void CameraService::removeByClient(const BasicClient* client) {
@@ -3814,13 +3847,50 @@
 }
 
 void CameraService::InjectionStatusListener::notifyInjectionError(
-        int errorCode) {
+        String8 injectedCamId, status_t err) {
     Mutex::Autolock lock(mListenerLock);
     if (mCameraInjectionCallback == nullptr) {
         ALOGW("InjectionStatusListener: mCameraInjectionCallback == nullptr");
         return;
     }
-    mCameraInjectionCallback->onInjectionError(errorCode);
+
+    switch (err) {
+        case -ENODEV:
+            mCameraInjectionCallback->onInjectionError(
+                    ICameraInjectionCallback::ERROR_INJECTION_SESSION);
+            ALOGE("No camera device with ID \"%s\" currently available!",
+                    injectedCamId.string());
+            break;
+        case -EBUSY:
+            mCameraInjectionCallback->onInjectionError(
+                    ICameraInjectionCallback::ERROR_INJECTION_SESSION);
+            ALOGE("Higher-priority client using camera, ID \"%s\" currently unavailable!",
+                    injectedCamId.string());
+            break;
+        case DEAD_OBJECT:
+            mCameraInjectionCallback->onInjectionError(
+                    ICameraInjectionCallback::ERROR_INJECTION_SESSION);
+            ALOGE("Camera ID \"%s\" object is dead!",
+                    injectedCamId.string());
+            break;
+        case INVALID_OPERATION:
+            mCameraInjectionCallback->onInjectionError(
+                    ICameraInjectionCallback::ERROR_INJECTION_SESSION);
+            ALOGE("Camera ID \"%s\" encountered an operating or internal error!",
+                    injectedCamId.string());
+            break;
+        case UNKNOWN_TRANSACTION:
+            mCameraInjectionCallback->onInjectionError(
+                    ICameraInjectionCallback::ERROR_INJECTION_UNSUPPORTED);
+            ALOGE("Camera ID \"%s\" method doesn't support!",
+                    injectedCamId.string());
+            break;
+        default:
+            mCameraInjectionCallback->onInjectionError(
+                    ICameraInjectionCallback::ERROR_INJECTION_INVALID_ERROR);
+            ALOGE("Unexpected error %s (%d) opening camera \"%s\"!",
+                    strerror(-err), err, injectedCamId.string());
+    }
 }
 
 void CameraService::InjectionStatusListener::binderDied(
@@ -3829,7 +3899,12 @@
     ALOGV("InjectionStatusListener: ICameraInjectionCallback has died");
     auto parent = mParent.promote();
     if (parent != nullptr) {
-        parent->stopInjectionImpl();
+        parent->clearInjectionParameters();
+        auto clientDescriptor = parent->mActiveClientManager.get(parent->mInjectionInternalCamId);
+        if (clientDescriptor != nullptr) {
+            BasicClient* baseClientPtr = clientDescriptor->getValue().get();
+            baseClientPtr->stopInjection();
+        }
     }
 }
 
@@ -3845,7 +3920,20 @@
         return STATUS_ERROR(ICameraInjectionCallback::ERROR_INJECTION_SERVICE,
                 "Camera service encountered error");
     }
-    parent->stopInjectionImpl();
+
+    status_t res = NO_ERROR;
+    parent->clearInjectionParameters();
+    auto clientDescriptor = parent->mActiveClientManager.get(parent->mInjectionInternalCamId);
+    if (clientDescriptor != nullptr) {
+        BasicClient* baseClientPtr = clientDescriptor->getValue().get();
+        res = baseClientPtr->stopInjection();
+        if (res != OK) {
+            ALOGE("CameraInjectionSession: Failed to stop the injection camera!"
+                " ret != NO_ERROR: %d", res);
+            return STATUS_ERROR(ICameraInjectionCallback::ERROR_INJECTION_SESSION,
+                "Camera session encountered error");
+        }
+    }
     return binder::Status::ok();
 }
 
@@ -4554,10 +4642,14 @@
     return mode;
 }
 
-void CameraService::stopInjectionImpl() {
+void CameraService::clearInjectionParameters() {
+    {
+        Mutex::Autolock lock(mInjectionParametersLock);
+        mInjectionInitPending = true;
+        mInjectionInternalCamId = "";
+    }
+    mInjectionExternalCamId = "";
     mInjectionStatusListener->removeListener();
-
-    // TODO: Implement the stop injection function.
 }
 
 }; // namespace android
diff --git a/services/camera/libcameraservice/CameraService.h b/services/camera/libcameraservice/CameraService.h
index 1fb7104..dc194cc 100644
--- a/services/camera/libcameraservice/CameraService.h
+++ b/services/camera/libcameraservice/CameraService.h
@@ -320,6 +320,14 @@
         // Set/reset camera mute
         virtual status_t setCameraMute(bool enabled) = 0;
 
+        // The injection camera session to replace the internal camera
+        // session.
+        virtual status_t injectCamera(const String8& injectedCamId,
+                sp<CameraProviderManager> manager) = 0;
+
+        // Stop the injection camera and restore to internal camera session.
+        virtual status_t stopInjection() = 0;
+
     protected:
         BasicClient(const sp<CameraService>& cameraService,
                 const sp<IBinder>& remoteCallback,
@@ -1190,7 +1198,7 @@
 
             void addListener(const sp<hardware::camera2::ICameraInjectionCallback>& callback);
             void removeListener();
-            void notifyInjectionError(int errorCode);
+            void notifyInjectionError(String8 injectedCamId, status_t err);
 
             // IBinder::DeathRecipient implementation
             virtual void binderDied(const wp<IBinder>& who);
@@ -1217,7 +1225,15 @@
             wp<CameraService> mParent;
     };
 
-    void stopInjectionImpl();
+    void clearInjectionParameters();
+
+    // This is the existing camera id being replaced.
+    String8 mInjectionInternalCamId;
+    // This is the external camera Id replacing the internalId.
+    String8 mInjectionExternalCamId;
+    bool mInjectionInitPending = true;
+    // Guard mInjectionInternalCamId and mInjectionInitPending.
+    Mutex mInjectionParametersLock;
 };
 
 } // namespace android
diff --git a/services/camera/libcameraservice/api2/CameraOfflineSessionClient.cpp b/services/camera/libcameraservice/api2/CameraOfflineSessionClient.cpp
index ef15f2d..652842b 100644
--- a/services/camera/libcameraservice/api2/CameraOfflineSessionClient.cpp
+++ b/services/camera/libcameraservice/api2/CameraOfflineSessionClient.cpp
@@ -330,5 +330,19 @@
                 CaptureResultExtras());
 }
 
+status_t CameraOfflineSessionClient::injectCamera(const String8& injectedCamId,
+            sp<CameraProviderManager> manager) {
+    ALOGV("%s: This client doesn't support the injection camera. injectedCamId: %s providerPtr: %p",
+            __FUNCTION__, injectedCamId.string(), manager.get());
+
+    return OK;
+}
+
+status_t CameraOfflineSessionClient::stopInjection() {
+    ALOGV("%s: This client doesn't support the injection camera.", __FUNCTION__);
+
+    return OK;
+}
+
 // ----------------------------------------------------------------------------
 }; // namespace android
diff --git a/services/camera/libcameraservice/api2/CameraOfflineSessionClient.h b/services/camera/libcameraservice/api2/CameraOfflineSessionClient.h
index b219a4c..b5238b8 100644
--- a/services/camera/libcameraservice/api2/CameraOfflineSessionClient.h
+++ b/services/camera/libcameraservice/api2/CameraOfflineSessionClient.h
@@ -98,6 +98,9 @@
     void notifyPrepared(int streamId) override;
     void notifyRequestQueueEmpty() override;
     void notifyRepeatingRequestError(long lastFrameNumber) override;
+    status_t injectCamera(const String8& injectedCamId,
+            sp<CameraProviderManager> manager) override;
+    status_t stopInjection() override;
 
 private:
     mutable Mutex mBinderSerializationLock;
diff --git a/services/camera/libcameraservice/common/Camera2ClientBase.cpp b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
index 13d044a..1147e23 100644
--- a/services/camera/libcameraservice/common/Camera2ClientBase.cpp
+++ b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
@@ -413,6 +413,17 @@
     mRemoteCallback.clear();
 }
 
+template <typename TClientBase>
+status_t Camera2ClientBase<TClientBase>::injectCamera(const String8& injectedCamId,
+        sp<CameraProviderManager> manager) {
+    return mDevice->injectCamera(injectedCamId, manager);
+}
+
+template <typename TClientBase>
+status_t Camera2ClientBase<TClientBase>::stopInjection() {
+    return mDevice->stopInjection();
+}
+
 template class Camera2ClientBase<CameraService::Client>;
 template class Camera2ClientBase<CameraDeviceClientBase>;
 
diff --git a/services/camera/libcameraservice/common/Camera2ClientBase.h b/services/camera/libcameraservice/common/Camera2ClientBase.h
index 6246f7b..b593bfa 100644
--- a/services/camera/libcameraservice/common/Camera2ClientBase.h
+++ b/services/camera/libcameraservice/common/Camera2ClientBase.h
@@ -114,6 +114,10 @@
         mutable Mutex mRemoteCallbackLock;
     } mSharedCameraCallbacks;
 
+    status_t      injectCamera(const String8& injectedCamId,
+                               sp<CameraProviderManager> manager) override;
+    status_t      stopInjection() override;
+
 protected:
 
     // The PID provided in the constructor call
diff --git a/services/camera/libcameraservice/common/CameraDeviceBase.h b/services/camera/libcameraservice/common/CameraDeviceBase.h
index 85b0cc2..3c95ed3 100644
--- a/services/camera/libcameraservice/common/CameraDeviceBase.h
+++ b/services/camera/libcameraservice/common/CameraDeviceBase.h
@@ -427,6 +427,18 @@
      */
     void setImageDumpMask(int mask) { mImageDumpMask = mask; }
 
+    /**
+     * The injection camera session to replace the internal camera
+     * session.
+     */
+    virtual status_t injectCamera(const String8& injectedCamId,
+            sp<CameraProviderManager> manager) = 0;
+
+    /**
+     * Stop the injection camera and restore to internal camera session.
+     */
+    virtual status_t stopInjection() = 0;
+
 protected:
     bool mImageDumpMask = 0;
 };