diff --git a/apex/Android.bp b/apex/Android.bp
index ec0efe6..42a620b 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -12,22 +12,30 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-com_android_media_extractors = [
-    "libaacextractor",
-    "libamrextractor",
-    "libflacextractor",
-    "libmidiextractor",
-    "libmkvextractor",
-    "libmp3extractor",
-    "libmp4extractor",
-    "libmpeg2extractor",
-    "liboggextractor",
-    "libwavextractor",
-]
-
 apex_defaults {
     name: "com.android.media-defaults",
     java_libs: ["updatable-media"],
+    multilib: {
+        first: {
+            // Extractor process runs only with the primary ABI.
+            native_shared_libs: [
+                // Extractor plugins
+                "libaacextractor",
+                "libamrextractor",
+                "libflacextractor",
+                "libmidiextractor",
+                "libmkvextractor",
+                "libmp3extractor",
+                "libmp4extractor",
+                "libmpeg2extractor",
+                "liboggextractor",
+                "libwavextractor",
+            ],
+        },
+    },
+    prebuilts: [
+        "mediaextractor.policy",
+    ],
     key: "com.android.media.key",
     certificate: ":com.android.media.certificate",
 
@@ -39,12 +47,6 @@
     name: "com.android.media",
     manifest: "manifest.json",
     defaults: ["com.android.media-defaults"],
-    multilib: {
-        first: {
-            // Extractor process runs only with the primary ABI.
-            native_shared_libs: com_android_media_extractors,
-        },
-    },
 }
 
 filegroup {
@@ -66,6 +68,7 @@
         "com.android.media.swcodec-mediaswcodec.rc",
         "com.android.media.swcodec-ld.config.txt",
         "mediaswcodec.policy",
+        "mediaswcodec.xml",
     ],
     use_vendor: true,
     key: "com.android.media.swcodec.key",
diff --git a/apex/manifest.json b/apex/manifest.json
index cee94e2..03b9dd0 100644
--- a/apex/manifest.json
+++ b/apex/manifest.json
@@ -1,4 +1,4 @@
 {
   "name": "com.android.media",
-  "version": 210000000
+  "version": 220000000
 }
diff --git a/apex/manifest_codec.json b/apex/manifest_codec.json
index b83e65a..58ce868 100644
--- a/apex/manifest_codec.json
+++ b/apex/manifest_codec.json
@@ -1,4 +1,4 @@
 {
   "name": "com.android.media.swcodec",
-  "version": 210000000
+  "version": 220000000
 }
diff --git a/apex/testing/Android.bp b/apex/testing/Android.bp
index 297d864..701ced7 100644
--- a/apex/testing/Android.bp
+++ b/apex/testing/Android.bp
@@ -17,13 +17,6 @@
     manifest: "test_manifest.json",
     file_contexts: "com.android.media",
     defaults: ["com.android.media-defaults"],
-    multilib: {
-        both: {
-            // for test apex, built for both ABIs
-            native_shared_libs: com_android_media_extractors,
-        },
-    },
-    compile_multilib: "both",
     installable: false,
 }
 
diff --git a/drm/libmediadrm/CryptoHal.cpp b/drm/libmediadrm/CryptoHal.cpp
index 4dda5d7..d62ccd6 100644
--- a/drm/libmediadrm/CryptoHal.cpp
+++ b/drm/libmediadrm/CryptoHal.cpp
@@ -301,7 +301,7 @@
     ssize_t offset;
     size_t size;
 
-    if (memory == NULL && buffer == NULL) {
+    if (memory == NULL || buffer == NULL) {
         return UNEXPECTED_NULL;
     }
 
diff --git a/media/bufferpool/1.0/Connection.cpp b/media/bufferpool/1.0/Connection.cpp
index e58f595..be89701 100644
--- a/media/bufferpool/1.0/Connection.cpp
+++ b/media/bufferpool/1.0/Connection.cpp
@@ -32,14 +32,22 @@
             status = mAccessor->fetch(
                     mConnectionId, transactionId, bufferId, &handle);
             if (status == ResultStatus::OK) {
-                _hidl_cb(status, Buffer{bufferId, handle});
+                Buffer buffer = {};
+                buffer.id = bufferId;
+                buffer.buffer = handle;
+                _hidl_cb(status, buffer);
                 return Void();
             }
         } else {
             mAccessor->cleanUp(false);
         }
     }
-    _hidl_cb(status, Buffer{0, nullptr});
+
+    Buffer buffer = {};
+    buffer.id = 0;
+    buffer.buffer = nullptr;
+
+    _hidl_cb(status, buffer);
     return Void();
 }
 
diff --git a/media/bufferpool/2.0/Connection.cpp b/media/bufferpool/2.0/Connection.cpp
index 6bd0e79..57d0c7e 100644
--- a/media/bufferpool/2.0/Connection.cpp
+++ b/media/bufferpool/2.0/Connection.cpp
@@ -32,14 +32,22 @@
             status = mAccessor->fetch(
                     mConnectionId, transactionId, bufferId, &handle);
             if (status == ResultStatus::OK) {
-                _hidl_cb(status, Buffer{bufferId, handle});
+                Buffer buffer = {};
+                buffer.id = bufferId;
+                buffer.buffer = handle;
+                _hidl_cb(status, buffer);
                 return Void();
             }
         } else {
             mAccessor->cleanUp(false);
         }
     }
-    _hidl_cb(status, Buffer{0, nullptr});
+
+    Buffer buffer = {};
+    buffer.id = 0;
+    buffer.buffer = nullptr;
+
+    _hidl_cb(status, buffer);
     return Void();
 }
 
diff --git a/media/codec2/sfplugin/Codec2InfoBuilder.cpp b/media/codec2/sfplugin/Codec2InfoBuilder.cpp
index ead0a9b..1919597 100644
--- a/media/codec2/sfplugin/Codec2InfoBuilder.cpp
+++ b/media/codec2/sfplugin/Codec2InfoBuilder.cpp
@@ -212,6 +212,76 @@
     }
 }
 
+class Switch {
+    enum Flags : uint8_t {
+        // flags
+        IS_ENABLED = (1 << 0),
+        BY_DEFAULT = (1 << 1),
+    };
+
+    constexpr Switch(uint8_t flags) : mFlags(flags) {}
+
+    uint8_t mFlags;
+
+public:
+    // have to create class due to this bool conversion operator...
+    constexpr operator bool() const {
+        return mFlags & IS_ENABLED;
+    }
+
+    constexpr Switch operator!() const {
+        return Switch(mFlags ^ IS_ENABLED);
+    }
+
+    static constexpr Switch DISABLED() { return 0; };
+    static constexpr Switch ENABLED() { return IS_ENABLED; };
+    static constexpr Switch DISABLED_BY_DEFAULT() { return BY_DEFAULT; };
+    static constexpr Switch ENABLED_BY_DEFAULT() { return IS_ENABLED | BY_DEFAULT; };
+
+    const char *toString(const char *def = "??") const {
+        switch (mFlags) {
+        case 0:                         return "0";
+        case IS_ENABLED:                return "1";
+        case BY_DEFAULT:                return "(0)";
+        case IS_ENABLED | BY_DEFAULT:   return "(1)";
+        default: return def;
+        }
+    }
+
+};
+
+const char *asString(const Switch &s, const char *def = "??") {
+    return s.toString(def);
+}
+
+Switch isSettingEnabled(
+        std::string setting, const MediaCodecsXmlParser::AttributeMap &settings,
+        Switch def = Switch::DISABLED_BY_DEFAULT()) {
+    const auto enablement = settings.find(setting);
+    if (enablement == settings.end()) {
+        return def;
+    }
+    return enablement->second == "1" ? Switch::ENABLED() : Switch::DISABLED();
+}
+
+Switch isVariantEnabled(
+        std::string variant, const MediaCodecsXmlParser::AttributeMap &settings) {
+    return isSettingEnabled("variant-" + variant, settings);
+}
+
+Switch isVariantExpressionEnabled(
+        std::string exp, const MediaCodecsXmlParser::AttributeMap &settings) {
+    if (!exp.empty() && exp.at(0) == '!') {
+        return !isVariantEnabled(exp.substr(1, exp.size() - 1), settings);
+    }
+    return isVariantEnabled(exp, settings);
+}
+
+Switch isDomainEnabled(
+        std::string domain, const MediaCodecsXmlParser::AttributeMap &settings) {
+    return isSettingEnabled("domain-" + domain, settings);
+}
+
 } // unnamed namespace
 
 status_t Codec2InfoBuilder::buildMediaCodecList(MediaCodecListWriter* writer) {
@@ -248,15 +318,33 @@
     // Obtain Codec2Client
     std::vector<Traits> traits = Codec2Client::ListComponents();
 
-    MediaCodecsXmlParser parser(
-            MediaCodecsXmlParser::defaultSearchDirs,
-            "media_codecs_c2.xml",
-            "media_codecs_performance_c2.xml");
+    // parse APEX XML first, followed by vendor XML
+    MediaCodecsXmlParser parser;
+    parser.parseXmlFilesInSearchDirs(
+            parser.getDefaultXmlNames(),
+            { "/apex/com.android.media.swcodec/etc" });
+
+    // TODO: remove these c2-specific files once product moved to default file names
+    parser.parseXmlFilesInSearchDirs(
+            { "media_codecs_c2.xml", "media_codecs_performance_c2.xml" });
+
+    // parse default XML files
+    parser.parseXmlFilesInSearchDirs();
+
     if (parser.getParsingStatus() != OK) {
         ALOGD("XML parser no good");
         return OK;
     }
 
+    MediaCodecsXmlParser::AttributeMap settings = parser.getServiceAttributeMap();
+    for (const auto &v : settings) {
+        if (!hasPrefix(v.first, "media-type-")
+                && !hasPrefix(v.first, "domain-")
+                && !hasPrefix(v.first, "variant-")) {
+            writer->addGlobalSetting(v.first.c_str(), v.second.c_str());
+        }
+    }
+
     for (const Traits& trait : traits) {
         C2Component::rank_t rank = trait.rank;
 
@@ -341,12 +429,42 @@
                 break;
             }
 
+            const MediaCodecsXmlParser::CodecProperties &codec =
+                parser.getCodecMap().at(nameOrAlias);
+
+            // verify that either the codec is explicitly enabled, or one of its domains is
+            bool codecEnabled = codec.quirkSet.find("attribute::disabled") == codec.quirkSet.end();
+            if (!codecEnabled) {
+                for (const std::string &domain : codec.domainSet) {
+                    const Switch enabled = isDomainEnabled(domain, settings);
+                    ALOGV("codec entry '%s' is in domain '%s' that is '%s'",
+                            nameOrAlias.c_str(), domain.c_str(), asString(enabled));
+                    if (enabled) {
+                        codecEnabled = true;
+                        break;
+                    }
+                }
+            }
+            // if codec has variants, also check that at least one of them is enabled
+            bool variantEnabled = codec.variantSet.empty();
+            for (const std::string &variant : codec.variantSet) {
+                const Switch enabled = isVariantExpressionEnabled(variant, settings);
+                ALOGV("codec entry '%s' has a variant '%s' that is '%s'",
+                        nameOrAlias.c_str(), variant.c_str(), asString(enabled));
+                if (enabled) {
+                    variantEnabled = true;
+                    break;
+                }
+            }
+            if (!codecEnabled || !variantEnabled) {
+                ALOGD("codec entry for '%s' is disabled", nameOrAlias.c_str());
+                continue;
+            }
+
             ALOGV("adding codec entry for '%s'", nameOrAlias.c_str());
             std::unique_ptr<MediaCodecInfoWriter> codecInfo = writer->addMediaCodecInfo();
             codecInfo->setName(nameOrAlias.c_str());
             codecInfo->setOwner(("codec2::" + trait.owner).c_str());
-            const MediaCodecsXmlParser::CodecProperties &codec =
-                parser.getCodecMap().at(nameOrAlias);
 
             bool encoder = trait.kind == C2Component::KIND_ENCODER;
             typename std::underlying_type<MediaCodecInfo::Attributes>::type attrs = 0;
@@ -373,6 +491,7 @@
                     rank = xmlRank;
                 }
             }
+            ALOGV("rank: %u", (unsigned)rank);
             codecInfo->setRank(rank);
 
             for (const std::string &alias : codec.aliases) {
@@ -382,12 +501,39 @@
 
             for (auto typeIt = codec.typeMap.begin(); typeIt != codec.typeMap.end(); ++typeIt) {
                 const std::string &mediaType = typeIt->first;
+                const Switch typeEnabled = isSettingEnabled(
+                        "media-type-" + mediaType, settings, Switch::ENABLED_BY_DEFAULT());
+                const Switch domainTypeEnabled = isSettingEnabled(
+                        "media-type-" + mediaType + (encoder ? "-encoder" : "-decoder"),
+                        settings, Switch::ENABLED_BY_DEFAULT());
+                ALOGV("type '%s-%s' is '%s/%s'",
+                        mediaType.c_str(), (encoder ? "encoder" : "decoder"),
+                        asString(typeEnabled), asString(domainTypeEnabled));
+                if (!typeEnabled || !domainTypeEnabled) {
+                    ALOGD("media type '%s' for codec entry '%s' is disabled", mediaType.c_str(),
+                            nameOrAlias.c_str());
+                    continue;
+                }
+
+                ALOGI("adding type '%s'", typeIt->first.c_str());
                 const MediaCodecsXmlParser::AttributeMap &attrMap = typeIt->second;
                 std::unique_ptr<MediaCodecInfo::CapabilitiesWriter> caps =
                     codecInfo->addMediaType(mediaType.c_str());
-                for (auto attrIt = attrMap.begin(); attrIt != attrMap.end(); ++attrIt) {
-                    std::string key, value;
-                    std::tie(key, value) = *attrIt;
+                for (const auto &v : attrMap) {
+                    std::string key = v.first;
+                    std::string value = v.second;
+
+                    size_t variantSep = key.find(":::");
+                    if (variantSep != std::string::npos) {
+                        std::string variant = key.substr(0, variantSep);
+                        const Switch enabled = isVariantExpressionEnabled(variant, settings);
+                        ALOGV("variant '%s' is '%s'", variant.c_str(), asString(enabled));
+                        if (!enabled) {
+                            continue;
+                        }
+                        key = key.substr(variantSep + 3);
+                    }
+
                     if (key.find("feature-") == 0 && key.find("feature-bitrate-modes") != 0) {
                         int32_t intValue = 0;
                         // Ignore trailing bad characters and default to 0.
diff --git a/media/extractors/aac/Android.bp b/media/extractors/aac/Android.bp
index 6fe5970..a58167a 100644
--- a/media/extractors/aac/Android.bp
+++ b/media/extractors/aac/Android.bp
@@ -20,7 +20,7 @@
     name: "libaacextractor",
     relative_install_path: "extractors",
 
-    compile_multilib: "both",
+    compile_multilib: "first",
 
     cflags: [
         "-Werror",
diff --git a/media/extractors/amr/Android.bp b/media/extractors/amr/Android.bp
index b26b2d8..4bd933d 100644
--- a/media/extractors/amr/Android.bp
+++ b/media/extractors/amr/Android.bp
@@ -18,7 +18,7 @@
     name: "libamrextractor",
     relative_install_path: "extractors",
 
-    compile_multilib: "both",
+    compile_multilib: "first",
 
     cflags: [
         "-Werror",
diff --git a/media/extractors/flac/Android.bp b/media/extractors/flac/Android.bp
index 3e83090..3a3d051 100644
--- a/media/extractors/flac/Android.bp
+++ b/media/extractors/flac/Android.bp
@@ -24,7 +24,7 @@
     name: "libflacextractor",
     relative_install_path: "extractors",
 
-    compile_multilib: "both",
+    compile_multilib: "first",
 
     cflags: [
         "-Werror",
diff --git a/media/extractors/midi/Android.bp b/media/extractors/midi/Android.bp
index 6790dd6..7d42e70 100644
--- a/media/extractors/midi/Android.bp
+++ b/media/extractors/midi/Android.bp
@@ -19,7 +19,7 @@
     name: "libmidiextractor",
     relative_install_path: "extractors",
 
-    compile_multilib: "both",
+    compile_multilib: "first",
 
     cflags: [
         "-Werror",
diff --git a/media/extractors/mkv/Android.bp b/media/extractors/mkv/Android.bp
index 7c94149..1744d3d 100644
--- a/media/extractors/mkv/Android.bp
+++ b/media/extractors/mkv/Android.bp
@@ -25,7 +25,7 @@
     name: "libmkvextractor",
     relative_install_path: "extractors",
 
-    compile_multilib: "both",
+    compile_multilib: "first",
 
     cflags: [
         "-Werror",
diff --git a/media/extractors/mp3/Android.bp b/media/extractors/mp3/Android.bp
index 168ef68..4e2f248 100644
--- a/media/extractors/mp3/Android.bp
+++ b/media/extractors/mp3/Android.bp
@@ -24,7 +24,7 @@
     name: "libmp3extractor",
     relative_install_path: "extractors",
 
-    compile_multilib: "both",
+    compile_multilib: "first",
 
     cflags: [
         "-Werror",
diff --git a/media/extractors/mp4/Android.bp b/media/extractors/mp4/Android.bp
index 9b9c931..1b308aa 100644
--- a/media/extractors/mp4/Android.bp
+++ b/media/extractors/mp4/Android.bp
@@ -32,7 +32,7 @@
     ],
     version_script: "exports.lds",
     relative_install_path: "extractors",
-    compile_multilib: "both",
+    compile_multilib: "first",
 }
 
 cc_library_shared {
diff --git a/media/extractors/mpeg2/Android.bp b/media/extractors/mpeg2/Android.bp
index 14f49ae..0f0c72c 100644
--- a/media/extractors/mpeg2/Android.bp
+++ b/media/extractors/mpeg2/Android.bp
@@ -40,7 +40,7 @@
     name: "libmpeg2extractor",
     relative_install_path: "extractors",
 
-    compile_multilib: "both",
+    compile_multilib: "first",
 
     cflags: [
         "-Werror",
diff --git a/media/extractors/ogg/Android.bp b/media/extractors/ogg/Android.bp
index fd03f64..604ec59 100644
--- a/media/extractors/ogg/Android.bp
+++ b/media/extractors/ogg/Android.bp
@@ -26,7 +26,7 @@
     name: "liboggextractor",
     relative_install_path: "extractors",
 
-    compile_multilib: "both",
+    compile_multilib: "first",
 
     cflags: [
         "-Werror",
diff --git a/media/extractors/wav/Android.bp b/media/extractors/wav/Android.bp
index 15fd796..7e89271 100644
--- a/media/extractors/wav/Android.bp
+++ b/media/extractors/wav/Android.bp
@@ -21,7 +21,7 @@
     name: "libwavextractor",
     relative_install_path: "extractors",
 
-    compile_multilib: "both",
+    compile_multilib: "first",
 
     cflags: [
         "-Werror",
diff --git a/media/libaaudio/src/legacy/AudioStreamRecord.cpp b/media/libaaudio/src/legacy/AudioStreamRecord.cpp
index 4a65fc9..71efc30 100644
--- a/media/libaaudio/src/legacy/AudioStreamRecord.cpp
+++ b/media/libaaudio/src/legacy/AudioStreamRecord.cpp
@@ -63,7 +63,9 @@
     // TODO Support UNSPECIFIED in AudioRecord. For now, use stereo if unspecified.
     int32_t samplesPerFrame = (getSamplesPerFrame() == AAUDIO_UNSPECIFIED)
                               ? 2 : getSamplesPerFrame();
-    audio_channel_mask_t channelMask = audio_channel_in_mask_from_count(samplesPerFrame);
+    audio_channel_mask_t channelMask = samplesPerFrame <= 2 ?
+                               audio_channel_in_mask_from_count(samplesPerFrame) :
+                               audio_channel_mask_for_index_assignment_from_count(samplesPerFrame);
 
     size_t frameCount = (builder.getBufferCapacity() == AAUDIO_UNSPECIFIED) ? 0
                         : builder.getBufferCapacity();
diff --git a/media/libaaudio/src/legacy/AudioStreamTrack.cpp b/media/libaaudio/src/legacy/AudioStreamTrack.cpp
index d628bf7..094cdd1 100644
--- a/media/libaaudio/src/legacy/AudioStreamTrack.cpp
+++ b/media/libaaudio/src/legacy/AudioStreamTrack.cpp
@@ -66,7 +66,9 @@
     // Use stereo if unspecified.
     int32_t samplesPerFrame = (getSamplesPerFrame() == AAUDIO_UNSPECIFIED)
                               ? 2 : getSamplesPerFrame();
-    audio_channel_mask_t channelMask = audio_channel_out_mask_from_count(samplesPerFrame);
+    audio_channel_mask_t channelMask = samplesPerFrame <= 2 ?
+                            audio_channel_out_mask_from_count(samplesPerFrame) :
+                            audio_channel_mask_for_index_assignment_from_count(samplesPerFrame);
 
     audio_output_flags_t flags;
     aaudio_performance_mode_t perfMode = getPerformanceMode();
diff --git a/media/libstagefright/codecs/amrwb/src/deemphasis_32.cpp b/media/libstagefright/codecs/amrwb/src/deemphasis_32.cpp
index b80555b..c0e4c51 100644
--- a/media/libstagefright/codecs/amrwb/src/deemphasis_32.cpp
+++ b/media/libstagefright/codecs/amrwb/src/deemphasis_32.cpp
@@ -131,7 +131,7 @@
     int16 lo, hi;
 
     L_tmp  = ((int32)x_hi[0]) << 16;
-    L_tmp += ((int32)x_lo[0]) << 4;
+    L_tmp += (((int32)x_lo[0]) << 4) & 0xFFFF;
     L_tmp  = shl_int32(L_tmp, 3);
 
     L_tmp = fxp_mac_16by16(*mem, mu, L_tmp),
@@ -144,7 +144,7 @@
     for (i = 1; i < L - 1; i++)
     {
         L_tmp  = ((int32)hi) << 16;
-        L_tmp += ((int32)lo) << 4;
+        L_tmp += (((int32)lo) << 4) & 0xFFFF;
         L_tmp  = shl_int32(L_tmp, 3);
         L_tmp  = fxp_mac_16by16(y[i - 1], mu, L_tmp),
                  L_tmp  = shl_int32(L_tmp, 1);           /* saturation can occur here */
@@ -153,7 +153,7 @@
         hi     = x_hi[i+1];
     }
     L_tmp  = ((int32)hi) << 16;
-    L_tmp += ((int32)lo) << 4;
+    L_tmp += (((int32)lo) << 4) & 0xFFFF;
     L_tmp  = shl_int32(L_tmp, 3);
     L_tmp  = fxp_mac_16by16(y[i - 1], mu, L_tmp),
              L_tmp  = shl_int32(L_tmp, 1);           /* saturation can occur here */
diff --git a/media/libstagefright/data/Android.bp b/media/libstagefright/data/Android.bp
new file mode 100644
index 0000000..616b4b3
--- /dev/null
+++ b/media/libstagefright/data/Android.bp
@@ -0,0 +1,6 @@
+prebuilt_etc {
+    name: "mediaswcodec.xml",
+    src: "media_codecs_sw.xml",
+    filename: "media_codecs.xml",
+    installable: false,
+}
diff --git a/media/libstagefright/data/media_codecs_sw.xml b/media/libstagefright/data/media_codecs_sw.xml
new file mode 100644
index 0000000..7ee1f4d
--- /dev/null
+++ b/media/libstagefright/data/media_codecs_sw.xml
@@ -0,0 +1,321 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!-- Copyright (C) 2014 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.
+-->
+
+<MediaCodecs>
+    <Settings>
+        <!-- disable TV and telephony domains by default. These must be opted in by OEMs -->
+        <Domain name="telephony" enabled="false" />
+        <Domain name="tv" enabled="false" />
+        <Variant name="slow-cpu" enabled="false" />
+    </Settings>
+    <Decoders>
+        <MediaCodec name="c2.android.mp3.decoder" type="audio/mpeg">
+            <Alias name="OMX.google.mp3.decoder" />
+            <Limit name="channel-count" max="2" />
+            <Limit name="sample-rate" ranges="8000,11025,12000,16000,22050,24000,32000,44100,48000" />
+            <Limit name="bitrate" range="8000-320000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.amrnb.decoder" type="audio/3gpp">
+            <Alias name="OMX.google.amrnb.decoder" />
+            <Limit name="channel-count" max="1" />
+            <Limit name="sample-rate" ranges="8000" />
+            <Limit name="bitrate" range="4750-12200" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.amrwb.decoder" type="audio/amr-wb">
+            <Alias name="OMX.google.amrwb.decoder" />
+            <Limit name="channel-count" max="1" />
+            <Limit name="sample-rate" ranges="16000" />
+            <Limit name="bitrate" range="6600-23850" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.aac.decoder" type="audio/mp4a-latm">
+            <Alias name="OMX.google.aac.decoder" />
+            <Limit name="channel-count" max="8" />
+            <Limit name="sample-rate" ranges="7350,8000,11025,12000,16000,22050,24000,32000,44100,48000" />
+            <Limit name="bitrate" range="8000-960000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.g711.alaw.decoder" type="audio/g711-alaw">
+            <Alias name="OMX.google.g711.alaw.decoder" />
+            <Limit name="channel-count" max="1" />
+            <Limit name="sample-rate" ranges="8000-48000" />
+            <Limit name="bitrate" range="64000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.g711.mlaw.decoder" type="audio/g711-mlaw">
+            <Alias name="OMX.google.g711.mlaw.decoder" />
+            <Limit name="channel-count" max="1" />
+            <Limit name="sample-rate" ranges="8000-48000" />
+            <Limit name="bitrate" range="64000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.vorbis.decoder" type="audio/vorbis">
+            <Alias name="OMX.google.vorbis.decoder" />
+            <Limit name="channel-count" max="8" />
+            <Limit name="sample-rate" ranges="8000-96000" />
+            <Limit name="bitrate" range="32000-500000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.opus.decoder" type="audio/opus">
+            <Alias name="OMX.google.opus.decoder" />
+            <Limit name="channel-count" max="8" />
+            <Limit name="sample-rate" ranges="48000" />
+            <Limit name="bitrate" range="6000-510000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.raw.decoder" type="audio/raw">
+            <Alias name="OMX.google.raw.decoder" />
+            <Limit name="channel-count" max="8" />
+            <Limit name="sample-rate" ranges="8000-96000" />
+            <Limit name="bitrate" range="1-10000000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.flac.decoder" type="audio/flac">
+            <Alias name="OMX.google.flac.decoder" />
+            <Limit name="channel-count" max="8" />
+            <Limit name="sample-rate" ranges="1-655350" />
+            <Limit name="bitrate" range="1-21000000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.gsm.decoder" type="audio/gsm" domain="telephony">
+            <Alias name="OMX.google.gsm.decoder" />
+            <Limit name="channel-count" max="1" />
+            <Limit name="sample-rate" ranges="8000" />
+            <Limit name="bitrate" range="13000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.mpeg4.decoder" type="video/mp4v-es">
+            <Alias name="OMX.google.mpeg4.decoder" />
+            <!-- profiles and levels:  ProfileSimple : Level3 -->
+            <Limit name="size" min="2x2" max="352x288" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="block-size" value="16x16" />
+            <Limit name="blocks-per-second" range="12-11880" />
+            <Limit name="bitrate" range="1-384000" />
+            <Feature name="adaptive-playback" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.h263.decoder" type="video/3gpp">
+            <Alias name="OMX.google.h263.decoder" />
+            <!-- profiles and levels:  ProfileBaseline : Level30, ProfileBaseline : Level45
+                    ProfileISWV2 : Level30, ProfileISWV2 : Level45 -->
+            <Limit name="size" min="2x2" max="352x288" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="bitrate" range="1-384000" />
+            <Feature name="adaptive-playback" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.avc.decoder" type="video/avc" variant="slow-cpu,!slow-cpu">
+            <Alias name="OMX.google.h264.decoder" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="block-size" value="16x16" />
+            <Variant name="!slow-cpu">
+                <Limit name="size" min="2x2" max="4080x4080" />
+                <!-- profiles and levels:  ProfileHigh : Level52 -->
+                <Limit name="block-count" range="1-32768" /> <!-- max 4096x2048 equivalent -->
+                <Limit name="blocks-per-second" range="1-1966080" />
+                <Limit name="bitrate" range="1-48000000" />
+            </Variant>
+            <Variant name="slow-cpu">
+                <Limit name="size" min="2x2" max="2048x2048" />
+                <!-- profiles and levels:  ProfileHigh : Level51 -->
+                <Limit name="block-count" range="1-16384" />
+                <Limit name="blocks-per-second" range="1-491520" />
+                <Limit name="bitrate" range="1-40000000" />
+            </Variant>
+            <Feature name="adaptive-playback" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.hevc.decoder" type="video/hevc" variant="slow-cpu,!slow-cpu">
+            <Alias name="OMX.google.hevc.decoder" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="block-size" value="8x8" />
+            <Variant name="!slow-cpu">
+                <Limit name="size" min="2x2" max="4096x4096" />
+                <!-- profiles and levels:  ProfileMain : MainTierLevel51 -->
+                <Limit name="block-count" range="1-196608" /> <!-- max 4096x3072 -->
+                <Limit name="blocks-per-second" range="1-2000000" />
+                <Limit name="bitrate" range="1-10000000" />
+            </Variant>
+            <Variant name="slow-cpu">
+                <Limit name="size" min="2x2" max="2048x2048" />
+                <!-- profiles and levels:  ProfileMain : MainTierLevel51 -->
+                <Limit name="block-count" range="1-65536" />
+                <Limit name="blocks-per-second" range="1-491520" />
+                <Limit name="bitrate" range="1-5000000" />
+            </Variant>
+            <Feature name="adaptive-playback" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.vp8.decoder" type="video/x-vnd.on2.vp8" variant="slow-cpu,!slow-cpu">
+            <Alias name="OMX.google.vp8.decoder" />
+            <Limit name="size" min="2x2" max="2048x2048" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="block-size" value="16x16" />
+            <Variant name="!slow-cpu">
+                <Limit name="block-count" range="1-16384" />
+                <Limit name="blocks-per-second" range="1-1000000" />
+                <Limit name="bitrate" range="1-40000000" />
+            </Variant>
+            <Variant name="slow-cpu">
+                <Limit name="block-count" range="1-8192" /> <!-- max 2048x1024 -->
+                <Limit name="blocks-per-second" range="1-1000000" />
+                <Limit name="bitrate" range="1-40000000" />
+            </Variant>
+            <Feature name="adaptive-playback" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.vp9.decoder" type="video/x-vnd.on2.vp9" variant="slow-cpu,!slow-cpu">
+            <Alias name="OMX.google.vp9.decoder" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="block-size" value="16x16" />
+            <Variant name="!slow-cpu">
+                <Limit name="size" min="2x2" max="2048x2048" />
+                <Limit name="block-count" range="1-16384" />
+                <Limit name="blocks-per-second" range="1-500000" />
+                <Limit name="bitrate" range="1-40000000" />
+            </Variant>
+            <Variant name="slow-cpu">
+                <Limit name="size" min="2x2" max="1280x1280" />
+                <Limit name="block-count" range="1-3600" /> <!-- max 1280x720 -->
+                <Limit name="blocks-per-second" range="1-108000" />
+                <Limit name="bitrate" range="1-5000000" />
+            </Variant>
+            <Feature name="adaptive-playback" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.av1.decoder" type="video/av01" variant="!slow-cpu">
+            <Limit name="size" min="2x2" max="1920x1080" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="block-size" value="16x16" />
+            <Limit name="block-count" range="1-16384" />
+            <Limit name="blocks-per-second" range="1-2073600" />
+            <Limit name="bitrate" range="1-120000000" />
+            <Feature name="adaptive-playback" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.mpeg2.decoder" type="video/mpeg2" domain="tv">
+            <Alias name="OMX.google.mpeg2.decoder" />
+            <!-- profiles and levels:  ProfileMain : LevelHL -->
+            <Limit name="size" min="16x16" max="1920x1088" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="block-size" value="16x16" />
+            <Limit name="blocks-per-second" range="1-244800" />
+            <Limit name="bitrate" range="1-20000000" />
+            <Feature name="adaptive-playback" />
+        </MediaCodec>
+    </Decoders>
+    <Encoders>
+        <MediaCodec name="c2.android.aac.encoder" type="audio/mp4a-latm">
+            <Alias name="OMX.google.aac.encoder" />
+            <Limit name="channel-count" max="6" />
+            <Limit name="sample-rate" ranges="8000,11025,12000,16000,22050,24000,32000,44100,48000" />
+            <!-- also may support 64000, 88200  and 96000 Hz -->
+            <Limit name="bitrate" range="8000-960000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.amrnb.encoder" type="audio/3gpp">
+            <Alias name="OMX.google.amrnb.encoder" />
+            <Limit name="channel-count" max="1" />
+            <Limit name="sample-rate" ranges="8000" />
+            <Limit name="bitrate" range="4750-12200" />
+            <Feature name="bitrate-modes" value="CBR" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.amrwb.encoder" type="audio/amr-wb">
+            <Alias name="OMX.google.amrwb.encoder" />
+            <Limit name="channel-count" max="1" />
+            <Limit name="sample-rate" ranges="16000" />
+            <Limit name="bitrate" range="6600-23850" />
+            <Feature name="bitrate-modes" value="CBR" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.flac.encoder" type="audio/flac">
+            <Alias name="OMX.google.flac.encoder" />
+            <Limit name="channel-count" max="2" />
+            <Limit name="sample-rate" ranges="1-655350" />
+            <Limit name="bitrate" range="1-21000000" />
+            <Limit name="complexity" range="0-8"  default="5" />
+            <Feature name="bitrate-modes" value="CQ" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.opus.encoder" type="audio/opus">
+            <Limit name="channel-count" max="2" />
+            <Limit name="sample-rate" ranges="8000,12000,16000,24000,48000" />
+            <Limit name="bitrate" range="500-512000" />
+            <Limit name="complexity" range="0-10"  default="5" />
+            <Feature name="bitrate-modes" value="CQ" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.h263.encoder" type="video/3gpp">
+            <Alias name="OMX.google.h263.encoder" />
+            <!-- profiles and levels:  ProfileBaseline : Level45 -->
+            <Limit name="size" min="176x144" max="176x144" />
+            <Limit name="alignment" value="16x16" />
+            <Limit name="bitrate" range="1-128000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.mpeg4.encoder" type="video/mp4v-es">
+            <Alias name="OMX.google.mpeg4.encoder" />
+            <!-- profiles and levels:  ProfileCore : Level2 -->
+            <Limit name="size" min="16x16" max="176x144" />
+            <Limit name="alignment" value="16x16" />
+            <Limit name="block-size" value="16x16" />
+            <Limit name="blocks-per-second" range="12-1485" />
+            <Limit name="bitrate" range="1-64000" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.avc.encoder" type="video/avc" variant="slow-cpu,!slow-cpu">
+            <Alias name="OMX.google.h264.encoder" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="block-size" value="16x16" />
+            <Variant name="!slow-cpu">
+                <Limit name="size" min="16x16" max="2048x2048" />
+                <!-- profiles and levels:  ProfileBaseline : Level41 -->
+                <Limit name="block-count" range="1-8192" /> <!-- max 2048x1024 -->
+                <Limit name="blocks-per-second" range="1-245760" />
+                <Limit name="bitrate" range="1-12000000" />
+            </Variant>
+            <Variant name="slow-cpu">
+                <Limit name="size" min="16x16" max="1808x1808" />
+                <!-- profiles and levels:  ProfileBaseline : Level3 -->
+                <Limit name="block-count" range="1-1620" />
+                <Limit name="blocks-per-second" range="1-40500" />
+                <Limit name="bitrate" range="1-2000000" />
+            </Variant>
+            <Feature name="intra-refresh" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.vp8.encoder" type="video/x-vnd.on2.vp8" variant="slow-cpu,!slow-cpu">
+            <Alias name="OMX.google.vp8.encoder" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="block-size" value="16x16" />
+            <Variant name="!slow-cpu">
+                <Limit name="size" min="2x2" max="2048x2048" />
+                <!-- profiles and levels:  ProfileMain : Level_Version0-3 -->
+                <!-- 2016 devices can encode at about 10fps at this block count -->
+                <Limit name="block-count" range="1-16384" />
+                <Limit name="bitrate" range="1-40000000" />
+            </Variant>
+            <Variant name="slow-cpu">
+                <Limit name="size" min="2x2" max="1280x1280" />
+                <!-- profiles and levels:  ProfileMain : Level_Version0-3 -->
+                <Limit name="block-count" range="1-3600" /> <!-- max 1280x720 -->
+                <Limit name="bitrate" range="1-20000000" />
+            </Variant>
+            <Feature name="bitrate-modes" value="VBR,CBR" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.hevc.encoder" type="video/hevc" variant="!slow-cpu">
+            <!-- profiles and levels:  ProfileMain : MainTierLevel51 -->
+            <Limit name="size" min="320x128" max="512x512" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="block-size" value="8x8" />
+            <Limit name="block-count" range="1-4096" /> <!-- max 512x512 -->
+            <Limit name="blocks-per-second" range="1-122880" />
+            <Limit name="bitrate" range="1-10000000" />
+            <Limit name="complexity" range="0-10"  default="0" />
+            <Limit name="quality" range="0-100"  default="80" />
+            <Feature name="bitrate-modes" value="VBR,CBR,CQ" />
+        </MediaCodec>
+        <MediaCodec name="c2.android.vp9.encoder" type="video/x-vnd.on2.vp9" variant="!slow-cpu">
+            <Alias name="OMX.google.vp9.encoder" />
+            <!-- profiles and levels:  ProfileMain : Level_Version0-3 -->
+            <Limit name="size" min="2x2" max="2048x2048" />
+            <Limit name="alignment" value="2x2" />
+            <Limit name="block-size" value="16x16" />
+            <!-- 2016 devices can encode at about 8fps at this block count -->
+            <Limit name="block-count" range="1-3600" /> <!-- max 1280x720 -->
+            <Limit name="bitrate" range="1-40000000" />
+            <Feature name="bitrate-modes" value="VBR,CBR" />
+        </MediaCodec>
+    </Encoders>
+</MediaCodecs>
diff --git a/media/libstagefright/foundation/include/media/stagefright/foundation/ADebug.h b/media/libstagefright/foundation/include/media/stagefright/foundation/ADebug.h
index 180694b..37388a0 100644
--- a/media/libstagefright/foundation/include/media/stagefright/foundation/ADebug.h
+++ b/media/libstagefright/foundation/include/media/stagefright/foundation/ADebug.h
@@ -53,9 +53,11 @@
 #define LITERAL_TO_STRING_INTERNAL(x)    #x
 #define LITERAL_TO_STRING(x) LITERAL_TO_STRING_INTERNAL(x)
 
-#ifdef CHECK
-#undef CHECK
-#endif
+// allow to use CHECK_OP from android-base/logging.h
+// TODO: longterm replace this with android-base/logging.h, but there are some nuances, e.g.
+// android-base CHECK_OP requires a copy constructor, whereas we don't.
+#ifndef CHECK_OP
+
 #define CHECK(condition)                                \
     LOG_ALWAYS_FATAL_IF(                                \
             !(condition),                               \
@@ -63,10 +65,6 @@
             __FILE__ ":" LITERAL_TO_STRING(__LINE__)    \
             " CHECK(" #condition ") failed.")
 
-#ifdef CHECK_OP
-#undef CHECK_OP
-#endif
-
 #define CHECK_OP(x,y,suffix,op)                                         \
     do {                                                                \
         const auto &a = x;                                              \
@@ -82,15 +80,6 @@
         }                                                               \
     } while (false)
 
-#ifdef CHECK_EQ
-#undef CHECK_EQ
-#undef CHECK_NE
-#undef CHECK_LE
-#undef CHECK_LT
-#undef CHECK_GE
-#undef CHECK_GT
-#endif
-
 #define CHECK_EQ(x,y)   CHECK_OP(x,y,EQ,==)
 #define CHECK_NE(x,y)   CHECK_OP(x,y,NE,!=)
 #define CHECK_LE(x,y)   CHECK_OP(x,y,LE,<=)
@@ -98,6 +87,8 @@
 #define CHECK_GE(x,y)   CHECK_OP(x,y,GE,>=)
 #define CHECK_GT(x,y)   CHECK_OP(x,y,GT,>)
 
+#endif
+
 #define TRESPASS(...) \
         LOG_ALWAYS_FATAL(                                       \
             __FILE__ ":" LITERAL_TO_STRING(__LINE__)            \
diff --git a/media/libstagefright/omx/1.0/Omx.cpp b/media/libstagefright/omx/1.0/Omx.cpp
index bb79f54..eef9ce3 100644
--- a/media/libstagefright/omx/1.0/Omx.cpp
+++ b/media/libstagefright/omx/1.0/Omx.cpp
@@ -43,6 +43,8 @@
 Omx::Omx() :
     mMaster(new OMXMaster()),
     mParser() {
+    (void)mParser.parseXmlFilesInSearchDirs();
+    (void)mParser.parseXmlPath(mParser.defaultProfilingResultsXmlPath);
 }
 
 Omx::~Omx() {
diff --git a/media/libstagefright/omx/1.0/OmxStore.cpp b/media/libstagefright/omx/1.0/OmxStore.cpp
index 2e041e3..67f478e 100644
--- a/media/libstagefright/omx/1.0/OmxStore.cpp
+++ b/media/libstagefright/omx/1.0/OmxStore.cpp
@@ -17,6 +17,8 @@
 #include <ios>
 #include <list>
 
+#define LOG_TAG "OmxStore"
+
 #include <android-base/logging.h>
 
 #include <media/stagefright/omx/1.0/Conversion.h>
@@ -30,16 +32,33 @@
 namespace V1_0 {
 namespace implementation {
 
+using ::android::hardware::media::omx::V1_0::Status;
+using ::android::hardware::media::omx::V1_0::IOmx;
+
 OmxStore::OmxStore(
+        const sp<IOmx> &omx,
         const char* owner,
-        const char* const* searchDirs,
-        const char* mainXmlName,
-        const char* performanceXmlName,
+        const std::vector<std::string> &searchDirs,
+        const std::vector<std::string> &xmlNames,
         const char* profilingResultsXmlPath) {
-    MediaCodecsXmlParser parser(searchDirs,
-            mainXmlName,
-            performanceXmlName,
-            profilingResultsXmlPath);
+    // retrieve list of omx nodes
+    std::set<std::string> nodes;
+    if (omx != nullptr) {
+        omx->listNodes([&nodes](const Status &status,
+                                const hidl_vec<IOmx::ComponentInfo> &nodeList) {
+            if (status == Status::OK) {
+                for (const IOmx::ComponentInfo& info : nodeList) {
+                    nodes.emplace(info.mName.c_str());
+                }
+            }
+        });
+    }
+
+    MediaCodecsXmlParser parser;
+    parser.parseXmlFilesInSearchDirs(xmlNames, searchDirs);
+    if (profilingResultsXmlPath != nullptr) {
+        parser.parseXmlPath(profilingResultsXmlPath);
+    }
     mParsingStatus = toStatus(parser.getParsingStatus());
 
     const auto& serviceAttributeMap = parser.getServiceAttributeMap();
@@ -66,6 +85,13 @@
         nodeList.resize(rolePair.second.nodeList.size());
         size_t j = 0;
         for (const auto& nodePair : rolePair.second.nodeList) {
+            if (!nodes.count(nodePair.second.name)) {
+                // not supported by this OMX instance
+                if (!strncasecmp(nodePair.second.name.c_str(), "omx.", 4)) {
+                    LOG(INFO) << "node [" << nodePair.second.name.c_str() << "] not found in IOmx";
+                }
+                continue;
+            }
             NodeInfo node;
             node.name = nodePair.second.name;
             node.owner = owner;
@@ -82,6 +108,7 @@
             nodeList[j] = std::move(node);
             ++j;
         }
+        nodeList.resize(j);
         mRoleList[i] = std::move(role);
         ++i;
     }
diff --git a/media/libstagefright/omx/Android.bp b/media/libstagefright/omx/Android.bp
index 0c50752..e260cae 100644
--- a/media/libstagefright/omx/Android.bp
+++ b/media/libstagefright/omx/Android.bp
@@ -41,7 +41,6 @@
         "libcutils",
         "libstagefright_foundation",
         "libstagefright_bufferqueue_helper",
-        "libstagefright_softomx",
         "libstagefright_xmlparser",
         "libdl",
         "libhidlbase",
@@ -79,14 +78,10 @@
 cc_library_shared {
     name: "libstagefright_softomx",
     vendor_available: true,
-    vndk: {
-        enabled: true,
-    },
 
     srcs: [
         "SimpleSoftOMXComponent.cpp",
         "SoftOMXComponent.cpp",
-        "SoftOMXPlugin.cpp",
         "SoftVideoDecoderOMXComponent.cpp",
         "SoftVideoEncoderOMXComponent.cpp",
     ],
@@ -126,6 +121,49 @@
     },
 }
 
+cc_library_shared {
+    name: "libstagefright_softomx_plugin",
+    vendor_available: true,
+
+    srcs: [
+        "SoftOMXPlugin.cpp",
+    ],
+
+    export_include_dirs: [
+        "include",
+    ],
+
+    header_libs: [
+        "media_plugin_headers",
+    ],
+
+    export_header_lib_headers: [
+        "media_plugin_headers",
+    ],
+
+    shared_libs: [
+        "libstagefright_softomx",
+        "libstagefright_foundation",
+        "liblog",
+        "libutils",
+    ],
+
+    cflags: [
+        "-Werror",
+        "-Wall",
+        "-Wno-unused-parameter",
+        "-Wno-documentation",
+    ],
+
+    sanitize: {
+        misc_undefined: [
+            "signed-integer-overflow",
+            "unsigned-integer-overflow",
+        ],
+        cfi: true,
+    },
+}
+
 cc_defaults {
     name: "libstagefright_softomx-defaults",
     vendor_available: true,
diff --git a/media/libstagefright/omx/OMXMaster.cpp b/media/libstagefright/omx/OMXMaster.cpp
index 0967b5f..8c5ca6e 100644
--- a/media/libstagefright/omx/OMXMaster.cpp
+++ b/media/libstagefright/omx/OMXMaster.cpp
@@ -29,8 +29,7 @@
 
 namespace android {
 
-OMXMaster::OMXMaster()
-    : mVendorLibHandle(NULL) {
+OMXMaster::OMXMaster() {
 
     pid_t pid = getpid();
     char filename[20];
@@ -52,47 +51,52 @@
     }
 
     addVendorPlugin();
-    addPlugin(new SoftOMXPlugin);
+    addPlatformPlugin();
 }
 
 OMXMaster::~OMXMaster() {
     clearPlugins();
-
-    if (mVendorLibHandle != NULL) {
-        dlclose(mVendorLibHandle);
-        mVendorLibHandle = NULL;
-    }
 }
 
 void OMXMaster::addVendorPlugin() {
     addPlugin("libstagefrighthw.so");
 }
 
-void OMXMaster::addPlugin(const char *libname) {
-    mVendorLibHandle = android_load_sphal_library(libname, RTLD_NOW);
+void OMXMaster::addPlatformPlugin() {
+    addPlugin("libstagefright_softomx_plugin.so");
+}
 
-    if (mVendorLibHandle == NULL) {
+void OMXMaster::addPlugin(const char *libname) {
+    void *libHandle = android_load_sphal_library(libname, RTLD_NOW);
+
+    if (libHandle == NULL) {
         return;
     }
 
     typedef OMXPluginBase *(*CreateOMXPluginFunc)();
     CreateOMXPluginFunc createOMXPlugin =
         (CreateOMXPluginFunc)dlsym(
-                mVendorLibHandle, "createOMXPlugin");
+                libHandle, "createOMXPlugin");
     if (!createOMXPlugin)
         createOMXPlugin = (CreateOMXPluginFunc)dlsym(
-                mVendorLibHandle, "_ZN7android15createOMXPluginEv");
+                libHandle, "_ZN7android15createOMXPluginEv");
 
+    OMXPluginBase *plugin = nullptr;
     if (createOMXPlugin) {
-        addPlugin((*createOMXPlugin)());
+        plugin = (*createOMXPlugin)();
+    }
+
+    if (plugin) {
+        mPlugins.push_back({ plugin, libHandle });
+        addPlugin(plugin);
+    } else {
+        android_unload_sphal_library(libHandle);
     }
 }
 
 void OMXMaster::addPlugin(OMXPluginBase *plugin) {
     Mutex::Autolock autoLock(mLock);
 
-    mPlugins.push_back(plugin);
-
     OMX_U32 index = 0;
 
     char name[128];
@@ -120,20 +124,20 @@
 void OMXMaster::clearPlugins() {
     Mutex::Autolock autoLock(mLock);
 
-    typedef void (*DestroyOMXPluginFunc)(OMXPluginBase*);
-    DestroyOMXPluginFunc destroyOMXPlugin =
-        (DestroyOMXPluginFunc)dlsym(
-                mVendorLibHandle, "destroyOMXPlugin");
-
     mPluginByComponentName.clear();
+    mPluginByInstance.clear();
 
-    for (List<OMXPluginBase *>::iterator it = mPlugins.begin();
-            it != mPlugins.end(); ++it) {
+    typedef void (*DestroyOMXPluginFunc)(OMXPluginBase*);
+    for (const Plugin &plugin : mPlugins) {
+        DestroyOMXPluginFunc destroyOMXPlugin =
+            (DestroyOMXPluginFunc)dlsym(
+                    plugin.mLibHandle, "destroyOMXPlugin");
         if (destroyOMXPlugin)
-            destroyOMXPlugin(*it);
+            destroyOMXPlugin(plugin.mOmx);
         else
-            delete *it;
-        *it = NULL;
+            delete plugin.mOmx;
+
+        android_unload_sphal_library(plugin.mLibHandle);
     }
 
     mPlugins.clear();
diff --git a/media/libstagefright/omx/SoftOMXPlugin.cpp b/media/libstagefright/omx/SoftOMXPlugin.cpp
index 1f3e8c1..a720bc9 100644
--- a/media/libstagefright/omx/SoftOMXPlugin.cpp
+++ b/media/libstagefright/omx/SoftOMXPlugin.cpp
@@ -71,6 +71,16 @@
 static const size_t kNumComponents =
     sizeof(kComponents) / sizeof(kComponents[0]);
 
+extern "C" OMXPluginBase* createOMXPlugin() {
+    ALOGI("createOMXPlugin");
+    return new SoftOMXPlugin();
+}
+
+extern "C" void destroyOMXPlugin(OMXPluginBase* plugin) {
+    ALOGI("destroyOMXPlugin");
+    delete plugin;
+}
+
 SoftOMXPlugin::SoftOMXPlugin() {
 }
 
diff --git a/media/libstagefright/omx/include/media/stagefright/omx/1.0/OmxStore.h b/media/libstagefright/omx/include/media/stagefright/omx/1.0/OmxStore.h
index 006d2d9..15d46991 100644
--- a/media/libstagefright/omx/include/media/stagefright/omx/1.0/OmxStore.h
+++ b/media/libstagefright/omx/include/media/stagefright/omx/1.0/OmxStore.h
@@ -20,6 +20,7 @@
 #include <hidl/MQDescriptor.h>
 #include <hidl/Status.h>
 
+#include <android/hardware/media/omx/1.0/IOmx.h>
 #include <android/hardware/media/omx/1.0/IOmxStore.h>
 #include <media/stagefright/xmlparser/MediaCodecsXmlParser.h>
 
@@ -43,15 +44,14 @@
 
 struct OmxStore : public IOmxStore {
     OmxStore(
+            const sp<IOmx> &omx = nullptr,
             const char* owner = "default",
-            const char* const* searchDirs
-                = MediaCodecsXmlParser::defaultSearchDirs,
-            const char* mainXmlName
-                = MediaCodecsXmlParser::defaultMainXmlName,
-            const char* performanceXmlName
-                = MediaCodecsXmlParser::defaultPerformanceXmlName,
-            const char* profilingResultsXmlPath
-                = MediaCodecsXmlParser::defaultProfilingResultsXmlPath);
+            const std::vector<std::string> &searchDirs =
+                MediaCodecsXmlParser::getDefaultSearchDirs(),
+            const std::vector<std::string> &xmlFiles =
+                MediaCodecsXmlParser::getDefaultXmlNames(),
+            const char *xmlProfilingResultsPath =
+                MediaCodecsXmlParser::defaultProfilingResultsXmlPath);
 
     virtual ~OmxStore();
 
diff --git a/media/libstagefright/omx/include/media/stagefright/omx/OMXMaster.h b/media/libstagefright/omx/include/media/stagefright/omx/OMXMaster.h
index 897f287..93eaef1 100644
--- a/media/libstagefright/omx/include/media/stagefright/omx/OMXMaster.h
+++ b/media/libstagefright/omx/include/media/stagefright/omx/OMXMaster.h
@@ -52,13 +52,16 @@
 private:
     char mProcessName[16];
     Mutex mLock;
-    List<OMXPluginBase *> mPlugins;
+    struct Plugin {
+        OMXPluginBase *mOmx;
+        void *mLibHandle;
+    };
+    List<Plugin> mPlugins;
     KeyedVector<String8, OMXPluginBase *> mPluginByComponentName;
     KeyedVector<OMX_COMPONENTTYPE *, OMXPluginBase *> mPluginByInstance;
 
-    void *mVendorLibHandle;
-
     void addVendorPlugin();
+    void addPlatformPlugin();
     void addPlugin(const char *libname);
     void addPlugin(OMXPluginBase *plugin);
     void clearPlugins();
diff --git a/media/libstagefright/xmlparser/Android.bp b/media/libstagefright/xmlparser/Android.bp
index 202e964..38de831 100644
--- a/media/libstagefright/xmlparser/Android.bp
+++ b/media/libstagefright/xmlparser/Android.bp
@@ -20,15 +20,12 @@
     ],
 
     shared_libs: [
+        "libbase",
         "libexpat",
         "liblog",
         "libstagefright_omx_utils",
     ],
 
-    header_libs: [
-        "libbase_headers",
-    ],
-
     cflags: [
         "-Werror",
         "-Wall",
diff --git a/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp b/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp
index 7046f61..6a1b9a8 100644
--- a/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp
+++ b/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp
@@ -19,12 +19,18 @@
 
 #include <media/stagefright/xmlparser/MediaCodecsXmlParser.h>
 
+#include <android-base/logging.h>
 #include <android-base/macros.h>
 #include <utils/Log.h>
+
 #include <media/stagefright/MediaErrors.h>
+#include <media/stagefright/foundation/ADebug.h>
 #include <media/stagefright/omx/OMXUtils.h>
-#include <sys/stat.h>
+
 #include <expat.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
 
 #include <algorithm>
 #include <cctype>
@@ -32,8 +38,15 @@
 
 namespace android {
 
+using MCXP = MediaCodecsXmlParser;
+
 namespace {
 
+bool fileExists(const std::string &path) {
+    struct stat fileStat;
+    return stat(path.c_str(), &fileStat) == 0 && S_ISREG(fileStat.st_mode);
+}
+
 /**
  * Search for a file in a list of search directories.
  *
@@ -44,7 +57,7 @@
  * search continues until the `nullptr` element in `searchDirs` is reached, at
  * which point the function returns `false`.
  *
- * \param[in] searchDirs Null-terminated array of search paths.
+ * \param[in] searchDirs array of search paths.
  * \param[in] fileName Name of the file to search.
  * \param[out] outPath Full path of the file. `outPath` will hold a valid file
  * name if the return value of this function is `true`.
@@ -52,14 +65,13 @@
  * valid file name; `false` otherwise.
  */
 bool findFileInDirs(
-        const char* const* searchDirs,
-        const char *fileName,
+        const std::vector<std::string> &searchDirs,
+        const std::string &fileName,
         std::string *outPath) {
-    for (; *searchDirs != nullptr; ++searchDirs) {
-        *outPath = std::string(*searchDirs) + "/" + fileName;
-        struct stat fileStat;
-        if (stat(outPath->c_str(), &fileStat) == 0 &&
-                S_ISREG(fileStat.st_mode)) {
+    for (const std::string &searchDir : searchDirs) {
+        std::string path = searchDir + "/" + fileName;
+        if (fileExists(path)) {
+            *outPath = path;
             return true;
         }
     }
@@ -85,123 +97,435 @@
 bool parseBoolean(const char* s) {
     return striEq(s, "y") ||
             striEq(s, "yes") ||
+            striEq(s, "enabled") ||
             striEq(s, "t") ||
             striEq(s, "true") ||
             striEq(s, "1");
 }
 
-status_t limitFoundMissingAttr(const char* name, const char *attr, bool found = true) {
-    ALOGE("limit '%s' with %s'%s' attribute", name,
-            (found ? "" : "no "), attr);
-    return BAD_VALUE;
+
+status_t combineStatus(status_t a, status_t b) {
+    if (a == NO_INIT) {
+        return b;
+    } else if ((a == OK && (b == NAME_NOT_FOUND || b == ALREADY_EXISTS || b == NO_INIT))
+            || (b == OK && (a == NAME_NOT_FOUND || a == ALREADY_EXISTS))) {
+        // ignore NAME_NOT_FOUND and ALREADY_EXIST errors as long as the other error is OK
+        // also handle OK + NO_INIT here
+        return OK;
+    } else {
+        // prefer the first error result
+        return a ? : b;
+    }
 }
 
-status_t limitError(const char* name, const char *msg) {
-    ALOGE("limit '%s' %s", name, msg);
-    return BAD_VALUE;
+MCXP::StringSet parseCommaSeparatedStringSet(const char *s) {
+    MCXP::StringSet result;
+    for (const char *ptr = s ? : ""; *ptr; ) {
+        const char *end = strchrnul(ptr, ',');
+        if (ptr != end) { // skip empty values
+            result.emplace(ptr, end - ptr);
+        }
+        ptr = end + ('\0' != *end);
+    }
+    return result;
 }
 
-status_t limitInvalidAttr(const char* name, const char* attr, const char* value) {
-    ALOGE("limit '%s' with invalid '%s' attribute (%s)", name,
-            attr, value);
-    return BAD_VALUE;
-}
+#define PLOGD(msg, ...) \
+        ALOGD(msg " at line %zu of %s", ##__VA_ARGS__, \
+                (size_t)::XML_GetCurrentLineNumber(mParser.get()), mPath.c_str());
 
-}; // unnamed namespace
+}  // unnamed namespace
 
-constexpr char const* MediaCodecsXmlParser::defaultSearchDirs[];
-constexpr char const* MediaCodecsXmlParser::defaultMainXmlName;
-constexpr char const* MediaCodecsXmlParser::defaultPerformanceXmlName;
+struct MediaCodecsXmlParser::Impl {
+    // status + error message
+    struct Result {
+    private:
+        status_t mStatus;
+        std::string mError;
+
+    public:
+        Result(status_t s, std::string error = "")
+            : mStatus(s),
+              mError(error) {
+            if (error.empty() && s) {
+                error = "Failed (" + std::string(asString(s)) + ")";
+            }
+        }
+        operator status_t() const { return mStatus; }
+        std::string error() const { return mError; }
+    };
+
+
+    // Parsed data
+    struct Data {
+        // Service attributes
+        AttributeMap mServiceAttributeMap;
+        CodecMap mCodecMap;
+        Result addGlobal(std::string key, std::string value, bool updating);
+    };
+
+    enum Section {
+        SECTION_TOPLEVEL,
+        SECTION_SETTINGS,
+        SECTION_DECODERS,
+        SECTION_DECODER,
+        SECTION_DECODER_TYPE,
+        SECTION_ENCODERS,
+        SECTION_ENCODER,
+        SECTION_ENCODER_TYPE,
+        SECTION_INCLUDE,
+        SECTION_VARIANT,
+        SECTION_UNKNOWN,
+    };
+
+    // XML parsing state
+    struct State {
+    private:
+        Data *mData;
+
+        // current codec and/or type, plus whether we are updating
+        struct CodecAndType {
+            std::string mName;
+            CodecMap::iterator mCodec;
+            TypeMap::iterator mType;
+            bool mUpdating;
+        };
+
+        // using vectors as we need to reset their sizes
+        std::vector<std::string> mIncludeStack;
+        std::vector<Section> mSectionStack;
+        std::vector<StringSet> mVariantsStack;
+        std::vector<CodecAndType> mCurrent;
+
+    public:
+        State(Data *data);
+
+        Data &data() { return *mData; }
+
+        // used to restore parsing state at XML include boundaries, in case parsing the included
+        // file fails.
+        struct RestorePoint {
+            size_t numIncludes;
+            size_t numSections;
+            size_t numVariantSets;
+            size_t numCodecAndTypes;
+        };
+
+        // method manipulating restore points (all state stacks)
+        RestorePoint createRestorePoint() const {
+            return {
+                mIncludeStack.size(), mSectionStack.size(), mVariantsStack.size(), mCurrent.size()
+            };
+        }
+
+        void restore(RestorePoint rp) {
+            CHECK_GE(mIncludeStack.size(), rp.numIncludes);
+            CHECK_GE(mSectionStack.size(), rp.numSections);
+            CHECK_GE(mVariantsStack.size(), rp.numVariantSets);
+            CHECK_GE(mCurrent.size(), rp.numCodecAndTypes);
+
+            mIncludeStack.resize(rp.numIncludes);
+            mSectionStack.resize(rp.numSections);
+            mVariantsStack.resize(rp.numVariantSets);
+            mCurrent.resize(rp.numCodecAndTypes);
+        }
+
+        // methods manipulating the include stack
+        Result enterInclude(const std::string &path);
+        void exitInclude() {
+            mIncludeStack.pop_back();
+        }
+
+        // methods manipulating the codec/type stack/state
+        bool inCodec() const {
+            return !mCurrent.empty() && mCurrent.back().mCodec != mData->mCodecMap.end();
+        }
+
+        bool inType() const {
+            return inCodec()
+                    && mCurrent.back().mType != mCurrent.back().mCodec->second.typeMap.end();
+        }
+
+        Result enterMediaCodec(bool encoder, const char *name, const char *type, bool update);
+        Result enterType(const char *name, bool update);
+        void exitCodecOrType() {
+            mCurrent.pop_back();
+        }
+
+        // can only be called when inCodec()
+        MediaCodecsXmlParser::CodecProperties &codec() {
+            return mCurrent.back().mCodec->second;
+        }
+        // can only be called when inCodec()
+        std::string codecName() const {
+            return mCurrent.back().mName;
+        }
+        // can only be called when inCodec()
+        bool updating() const {
+            return mCurrent.back().mUpdating;
+        }
+        // can only be called when inType()
+        MediaCodecsXmlParser::AttributeMap &type() {
+            return mCurrent.back().mType->second;
+        }
+
+        // methods manipulating the section stack
+        Section section() const {
+            return mSectionStack.back();
+        }
+        Section lastNonIncludeSection() const;
+        void enterSection(Section s) {
+            mSectionStack.push_back(s);
+        }
+        void exitSection() {
+            mSectionStack.pop_back();
+            CHECK(!mSectionStack.empty());
+        }
+
+        // methods manipulating the variants stack
+        StringSet variants() const {
+            return mVariantsStack.back();
+        }
+        void enterVariants(StringSet variants) {
+            mVariantsStack.push_back(variants);
+        }
+        void exitVariants() {
+            mVariantsStack.pop_back();
+        }
+
+        // utility methods
+
+        // updates rank, domains, variants and enabledness on the current codec/type
+        Result updateCodec(
+                const char *rank, StringSet domains, StringSet variants, const char *enabled);
+        // adds a key-value attribute detail to the current type of the current codec
+        void addDetail(const std::string &key, const std::string &value);
+    };
+
+    /** XML Parser (state) */
+    struct Parser {
+        State *mState;
+
+        Parser(State *state, std::string path);
+
+        // keep track of the parser state
+        std::shared_ptr<XML_ParserStruct> mParser;
+        std::string mPath;
+        std::string mHrefBase;
+        status_t mStatus;
+
+        void parseXmlFile();
+
+        // XML parser callbacks
+        static void StartElementHandlerWrapper(void *me, const char *name, const char **attrs);
+        static void EndElementHandlerWrapper(void *me, const char *name);
+
+        void startElementHandler(const char *name, const char **attrs);
+        void endElementHandler(const char *name);
+
+        void updateStatus(status_t status);
+        void logAnyErrors(const Result &status) const;
+        status_t getStatus() const { return mStatus; }
+
+        status_t addAlias(const char **attrs);
+        status_t addFeature(const char **attrs);
+        status_t addLimit(const char **attrs);
+        status_t addQuirk(const char **attrs, const char *prefix = nullptr);
+        status_t addSetting(const char **attrs, const char *prefix = nullptr);
+        status_t enterMediaCodec(const char **attrs, bool encoder);
+        status_t enterType(const char **attrs);
+        status_t includeXmlFile(const char **attrs);
+        status_t limitVariants(const char **attrs);
+
+        status_t updateMediaCodec(
+                const char *rank, const StringSet &domain, const StringSet &variants,
+                const char *enabled);
+    };
+
+    status_t parseXmlFilesInSearchDirs(
+        const std::vector<std::string> &fileNames,
+        const std::vector<std::string> &searchDirs);
+
+    status_t parseXmlPath(const std::string &path);
+
+    // Computed longest common prefix
+    Data mData;
+    State mState;
+
+    // Role map
+    mutable std::string mCommonPrefix;
+    mutable RoleMap mRoleMap;
+    mutable std::mutex mLock;
+
+    status_t mParsingStatus;
+
+    Impl()
+        : mState(&mData),
+          mParsingStatus(NO_INIT) {
+    }
+
+    void generateRoleMap() const;
+    void generateCommonPrefix() const;
+
+    const AttributeMap& getServiceAttributeMap() const {
+        std::lock_guard<std::mutex> guard(mLock);
+        return mData.mServiceAttributeMap;
+    }
+
+    const CodecMap& getCodecMap() const {
+        std::lock_guard<std::mutex> guard(mLock);
+        return mData.mCodecMap;
+    }
+
+    const RoleMap& getRoleMap() const;
+    const char* getCommonPrefix() const;
+
+    status_t getParsingStatus() const {
+        std::lock_guard<std::mutex> guard(mLock);
+        return mParsingStatus;
+    }
+};
+
 constexpr char const* MediaCodecsXmlParser::defaultProfilingResultsXmlPath;
 
-MediaCodecsXmlParser::MediaCodecsXmlParser(
-        const char* const* searchDirs,
-        const char* mainXmlName,
-        const char* performanceXmlName,
-        const char* profilingResultsXmlPath) :
-    mParsingStatus(NO_INIT),
-    mUpdate(false),
-    mCodecCounter(0) {
-    std::string path;
-    if (findFileInDirs(searchDirs, mainXmlName, &path)) {
-        parseTopLevelXMLFile(path.c_str(), false);
-    } else {
-        ALOGE("Cannot find %s", mainXmlName);
-        mParsingStatus = NAME_NOT_FOUND;
-    }
-    if (findFileInDirs(searchDirs, performanceXmlName, &path)) {
-        parseTopLevelXMLFile(path.c_str(), true);
-    }
-    if (profilingResultsXmlPath != nullptr) {
-        parseTopLevelXMLFile(profilingResultsXmlPath, true);
-    }
+MediaCodecsXmlParser::MediaCodecsXmlParser()
+    : mImpl(new Impl()) {
 }
 
-bool MediaCodecsXmlParser::parseTopLevelXMLFile(
-        const char *codecs_xml,
-        bool ignore_errors) {
-    // get href_base
-    const char *href_base_end = strrchr(codecs_xml, '/');
-    if (href_base_end != nullptr) {
-        mHrefBase = std::string(codecs_xml, href_base_end - codecs_xml + 1);
-    }
+status_t MediaCodecsXmlParser::parseXmlFilesInSearchDirs(
+        const std::vector<std::string> &fileNames,
+        const std::vector<std::string> &searchDirs) {
+    return mImpl->parseXmlFilesInSearchDirs(fileNames, searchDirs);
+}
 
-    mParsingStatus = OK; // keeping this here for safety
-    mCurrentSection = SECTION_TOPLEVEL;
+status_t MediaCodecsXmlParser::parseXmlPath(const std::string &path) {
+    return mImpl->parseXmlPath(path);
+}
 
-    parseXMLFile(codecs_xml);
-
-    if (mParsingStatus != OK) {
-        ALOGW("parseTopLevelXMLFile(%s) failed", codecs_xml);
-        if (ignore_errors) {
-            mParsingStatus = OK;
-            return false;
+status_t MediaCodecsXmlParser::Impl::parseXmlFilesInSearchDirs(
+        const std::vector<std::string> &fileNames,
+        const std::vector<std::string> &searchDirs) {
+    status_t res = NO_INIT;
+    for (const std::string fileName : fileNames) {
+        status_t err = NO_INIT;
+        std::string path;
+        if (findFileInDirs(searchDirs, fileName, &path)) {
+            err = parseXmlPath(path);
+        } else {
+            ALOGD("Cannot find %s", path.c_str());
         }
-        mCodecMap.clear();
-        return false;
+        res = combineStatus(res, err);
     }
-    return true;
+    return res;
+}
+
+status_t MediaCodecsXmlParser::Impl::parseXmlPath(const std::string &path) {
+    std::lock_guard<std::mutex> guard(mLock);
+    if (!fileExists(path)) {
+        ALOGD("Cannot find %s", path.c_str());
+        mParsingStatus = combineStatus(mParsingStatus, NAME_NOT_FOUND);
+        return NAME_NOT_FOUND;
+    }
+
+    // save state (even though we should always be at toplevel here)
+    State::RestorePoint rp = mState.createRestorePoint();
+    Parser parser(&mState, path);
+    parser.parseXmlFile();
+    mState.restore(rp);
+
+    if (parser.getStatus() != OK) {
+        ALOGD("parseXmlPath(%s) failed with %s", path.c_str(), asString(parser.getStatus()));
+    }
+    mParsingStatus = combineStatus(mParsingStatus, parser.getStatus());
+    return parser.getStatus();
 }
 
 MediaCodecsXmlParser::~MediaCodecsXmlParser() {
 }
 
-void MediaCodecsXmlParser::parseXMLFile(const char *path) {
+MediaCodecsXmlParser::Impl::State::State(MediaCodecsXmlParser::Impl::Data *data)
+    : mData(data) {
+    mSectionStack.emplace_back(SECTION_TOPLEVEL);
+}
+
+MediaCodecsXmlParser::Impl::Section
+MediaCodecsXmlParser::Impl::State::lastNonIncludeSection() const {
+    for (auto it = mSectionStack.end(); it != mSectionStack.begin(); --it) {
+        if (it[-1] != SECTION_INCLUDE) {
+            return it[-1];
+        }
+    }
+    TRESPASS("must have non-include section");
+}
+
+void MediaCodecsXmlParser::Impl::Parser::updateStatus(status_t status) {
+    mStatus = combineStatus(mStatus, status);
+}
+
+void MediaCodecsXmlParser::Impl::Parser::logAnyErrors(const Result &status) const {
+    if (status) {
+        if (status.error().empty()) {
+            PLOGD("error %s", asString((status_t)status));
+        } else {
+            PLOGD("%s", status.error().c_str());
+        }
+    }
+}
+
+MediaCodecsXmlParser::Impl::Parser::Parser(State *state, std::string path)
+    : mState(state),
+      mPath(path),
+      mStatus(NO_INIT) {
+    // determine href_base
+    std::string::size_type end = path.rfind("/");
+    if (end != std::string::npos) {
+        mHrefBase = path.substr(0, end + 1);
+    }
+}
+
+void MediaCodecsXmlParser::Impl::Parser::parseXmlFile() {
+    const char *path = mPath.c_str();
+    ALOGD("parsing %s...", path);
     FILE *file = fopen(path, "r");
 
     if (file == nullptr) {
-        ALOGW("unable to open media codecs configuration xml file: %s", path);
-        mParsingStatus = NAME_NOT_FOUND;
+        ALOGD("unable to open media codecs configuration xml file: %s", path);
+        mStatus = NAME_NOT_FOUND;
         return;
     }
 
-    XML_Parser parser = ::XML_ParserCreate(nullptr);
-    LOG_FATAL_IF(parser == nullptr, "XML_MediaCodecsXmlParserCreate() failed.");
+    mParser = std::shared_ptr<XML_ParserStruct>(
+        ::XML_ParserCreate(nullptr),
+        [](XML_ParserStruct *parser) { ::XML_ParserFree(parser); });
+    LOG_FATAL_IF(!mParser, "XML_MediaCodecsXmlParserCreate() failed.");
 
-    ::XML_SetUserData(parser, this);
-    ::XML_SetElementHandler(
-            parser, StartElementHandlerWrapper, EndElementHandlerWrapper);
+    ::XML_SetUserData(mParser.get(), this);
+    ::XML_SetElementHandler(mParser.get(), StartElementHandlerWrapper, EndElementHandlerWrapper);
 
     static constexpr int BUFF_SIZE = 512;
-    while (mParsingStatus == OK) {
-        void *buff = ::XML_GetBuffer(parser, BUFF_SIZE);
+    // updateStatus(OK);
+    if (mStatus == NO_INIT) {
+        mStatus = OK;
+    }
+    while (mStatus == OK) {
+        void *buff = ::XML_GetBuffer(mParser.get(), BUFF_SIZE);
         if (buff == nullptr) {
-            ALOGE("failed in call to XML_GetBuffer()");
-            mParsingStatus = UNKNOWN_ERROR;
+            ALOGD("failed in call to XML_GetBuffer()");
+            mStatus = UNKNOWN_ERROR;
             break;
         }
 
         int bytes_read = ::fread(buff, 1, BUFF_SIZE, file);
         if (bytes_read < 0) {
-            ALOGE("failed in call to read");
-            mParsingStatus = ERROR_IO;
+            ALOGD("failed in call to read");
+            mStatus = ERROR_IO;
             break;
         }
 
-        XML_Status status = ::XML_ParseBuffer(parser, bytes_read, bytes_read == 0);
+        XML_Status status = ::XML_ParseBuffer(mParser.get(), bytes_read, bytes_read == 0);
         if (status != XML_STATUS_OK) {
-            ALOGE("malformed (%s)", ::XML_ErrorString(::XML_GetErrorCode(parser)));
-            mParsingStatus = ERROR_MALFORMED;
+            PLOGD("malformed (%s)", ::XML_ErrorString(::XML_GetErrorCode(mParser.get())));
+            mStatus = ERROR_MALFORMED;
             break;
         }
 
@@ -210,39 +534,47 @@
         }
     }
 
-    ::XML_ParserFree(parser);
+    mParser.reset();
 
     fclose(file);
     file = nullptr;
 }
 
 // static
-void MediaCodecsXmlParser::StartElementHandlerWrapper(
+void MediaCodecsXmlParser::Impl::Parser::StartElementHandlerWrapper(
         void *me, const char *name, const char **attrs) {
-    static_cast<MediaCodecsXmlParser*>(me)->startElementHandler(name, attrs);
+    static_cast<MediaCodecsXmlParser::Impl::Parser*>(me)->startElementHandler(name, attrs);
 }
 
 // static
-void MediaCodecsXmlParser::EndElementHandlerWrapper(void *me, const char *name) {
-    static_cast<MediaCodecsXmlParser*>(me)->endElementHandler(name);
+void MediaCodecsXmlParser::Impl::Parser::EndElementHandlerWrapper(void *me, const char *name) {
+    static_cast<MediaCodecsXmlParser::Impl::Parser*>(me)->endElementHandler(name);
 }
 
-status_t MediaCodecsXmlParser::includeXMLFile(const char **attrs) {
+status_t MediaCodecsXmlParser::Impl::Parser::includeXmlFile(const char **attrs) {
     const char *href = nullptr;
     size_t i = 0;
     while (attrs[i] != nullptr) {
-        if (strEq(attrs[i], "href")) {
-            if (attrs[++i] == nullptr) {
-                return BAD_VALUE;
-            }
-            href = attrs[i];
-        } else {
-            ALOGE("includeXMLFile: unrecognized attribute: %s", attrs[i]);
+        CHECK((i & 1) == 0);
+        if (attrs[i + 1] == nullptr) {
+            PLOGD("Include: attribute '%s' is null", attrs[i]);
             return BAD_VALUE;
         }
+
+        if (strEq(attrs[i], "href")) {
+            href = attrs[++i];
+        } else {
+            PLOGD("Include: ignoring unrecognized attribute '%s'", attrs[i]);
+            ++i;
+        }
         ++i;
     }
 
+    if (href == nullptr) {
+        PLOGD("Include with no 'href' attribute");
+        return BAD_VALUE;
+    }
+
     // For security reasons and for simplicity, file names can only contain
     // [a-zA-Z0-9_.] and must start with  media_codecs_ and end with .xml
     for (i = 0; href[i] != '\0'; i++) {
@@ -252,74 +584,114 @@
                 (href[i] >= 'a' && href[i] <= 'z')) {
             continue;
         }
-        ALOGE("invalid include file name: %s", href);
+        PLOGD("invalid include file name: %s", href);
         return BAD_VALUE;
     }
 
     std::string filename = href;
     if (filename.compare(0, 13, "media_codecs_") != 0 ||
             filename.compare(filename.size() - 4, 4, ".xml") != 0) {
-        ALOGE("invalid include file name: %s", href);
+        PLOGD("invalid include file name: %s", href);
         return BAD_VALUE;
     }
     filename.insert(0, mHrefBase);
 
-    status_t oldParsingStatus = mParsingStatus;
+    Result res = mState->enterInclude(filename);
+    if (res) {
+        logAnyErrors(res);
+        return res;
+    }
 
-    parseXMLFile(filename.c_str());
-
-    status_t newParsingStatus = mParsingStatus;
-    mParsingStatus = oldParsingStatus;
-    return newParsingStatus;
+    // save state so that we can resume even if XML parsing of the included file failed midway
+    State::RestorePoint rp = mState->createRestorePoint();
+    Parser parser(mState, filename);
+    parser.parseXmlFile();
+    mState->restore(rp);
+    mState->exitInclude();
+    return parser.getStatus();
 }
 
-void MediaCodecsXmlParser::startElementHandler(
+MediaCodecsXmlParser::Impl::Result
+MediaCodecsXmlParser::Impl::State::enterInclude(const std::string &fileName) {
+    if (std::find(mIncludeStack.begin(), mIncludeStack.end(), fileName)
+            != mIncludeStack.end()) {
+        return { BAD_VALUE, "recursive include chain" };
+    }
+    mIncludeStack.emplace_back(fileName);
+    return OK;
+}
+
+void MediaCodecsXmlParser::Impl::Parser::startElementHandler(
         const char *name, const char **attrs) {
     bool inType = true;
+    Result err = NO_INIT;
 
+    Section section = mState->section();
+
+    // handle include at any level
     if (strEq(name, "Include")) {
-        if (includeXMLFile(attrs) == OK) {
-            mSectionStack.push_back(mCurrentSection);
-            mCurrentSection = SECTION_INCLUDE;
-        }
+        mState->enterSection(SECTION_INCLUDE);
+        updateStatus(includeXmlFile(attrs));
         return;
     }
 
-    switch (mCurrentSection) {
+    // handle include section (top level)
+    if (section == SECTION_INCLUDE) {
+        if (strEq(name, "Included")) {
+            return;
+        }
+        // imitate prior level
+        section = mState->lastNonIncludeSection();
+    }
+
+    switch (section) {
         case SECTION_TOPLEVEL:
         {
+            Section nextSection;
             if (strEq(name, "Decoders")) {
-                mCurrentSection = SECTION_DECODERS;
+                nextSection = SECTION_DECODERS;
             } else if (strEq(name, "Encoders")) {
-                mCurrentSection = SECTION_ENCODERS;
+                nextSection = SECTION_ENCODERS;
             } else if (strEq(name, "Settings")) {
-                mCurrentSection = SECTION_SETTINGS;
+                nextSection = SECTION_SETTINGS;
+            } else if (strEq(name, "MediaCodecs")) {
+                return;
+            } else {
+                break;
             }
-            break;
+            mState->enterSection(nextSection);
+            return;
         }
 
         case SECTION_SETTINGS:
         {
             if (strEq(name, "Setting")) {
-                (void)addSettingFromAttributes(attrs);
+                err = addSetting(attrs);
+            } else if (strEq(name, "Variant")) {
+                err = addSetting(attrs, "variant-");
+            } else if (strEq(name, "Domain")) {
+                err = addSetting(attrs, "domain-");
+            } else {
+                break;
             }
-            break;
+            updateStatus(err);
+            return;
         }
 
         case SECTION_DECODERS:
-        {
-            if (strEq(name, "MediaCodec")) {
-                (void)addMediaCodecFromAttributes(false /* encoder */, attrs);
-                mCurrentSection = SECTION_DECODER;
-            }
-            break;
-        }
-
         case SECTION_ENCODERS:
         {
             if (strEq(name, "MediaCodec")) {
-                (void)addMediaCodecFromAttributes(true /* encoder */, attrs);
-                mCurrentSection = SECTION_ENCODER;
+                err = enterMediaCodec(attrs, section == SECTION_ENCODERS);
+                updateStatus(err);
+                if (err != OK) { // skip this element on error
+                    mState->enterSection(SECTION_UNKNOWN);
+                } else {
+                    mState->enterVariants(mState->codec().variantSet);
+                    mState->enterSection(
+                            section == SECTION_DECODERS ? SECTION_DECODER : SECTION_ENCODER);
+                }
+                return;
             }
             break;
         }
@@ -327,14 +699,21 @@
         case SECTION_DECODER:
         case SECTION_ENCODER:
         {
-            if (strEq(name, "Quirk") || strEq(name, "Attribute")) {
-                (void)addQuirk(attrs, name);
+            if (strEq(name, "Quirk")) {
+                err = addQuirk(attrs, "quirk::");
+            } else if (strEq(name, "Attribute")) {
+                err = addQuirk(attrs, "attribute::");
+            } else if (strEq(name, "Alias")) {
+                err = addAlias(attrs);
             } else if (strEq(name, "Type")) {
-                (void)addTypeFromAttributes(attrs,
-                        (mCurrentSection == SECTION_ENCODER));
-                mCurrentSection =
-                        (mCurrentSection == SECTION_DECODER ?
-                        SECTION_DECODER_TYPE : SECTION_ENCODER_TYPE);
+                err = enterType(attrs);
+                if (err != OK) { // skip this element on error
+                    mState->enterSection(SECTION_UNKNOWN);
+                } else {
+                    mState->enterSection(
+                            section == SECTION_DECODER
+                                    ? SECTION_DECODER_TYPE : SECTION_ENCODER_TYPE);
+                }
             }
         }
         inType = false;
@@ -342,91 +721,102 @@
 
         case SECTION_DECODER_TYPE:
         case SECTION_ENCODER_TYPE:
+        case SECTION_VARIANT:
         {
             // ignore limits and features specified outside of type
-            bool outside = !inType &&
-                    mCurrentType == mCurrentCodec->second.typeMap.end();
-            if (outside &&
-                    (strEq(name, "Limit") || strEq(name, "Feature"))) {
-                ALOGW("ignoring %s specified outside of a Type", name);
-            } else if (strEq(name, "Alias")) {
-                (void)addAlias(attrs);
+            if (!mState->inType()
+                    && (strEq(name, "Limit") || strEq(name, "Feature") || strEq(name, "Variant"))) {
+                PLOGD("ignoring %s specified outside of a Type", name);
+                return;
             } else if (strEq(name, "Limit")) {
-                (void)addLimit(attrs);
+                err = addLimit(attrs);
             } else if (strEq(name, "Feature")) {
-                (void)addFeature(attrs);
+                err = addFeature(attrs);
+            } else if (strEq(name, "Variant") && section != SECTION_VARIANT) {
+                err = limitVariants(attrs);
+                mState->enterSection(err == OK ? SECTION_VARIANT : SECTION_UNKNOWN);
+            } else if (inType
+                    && (strEq(name, "Alias") || strEq(name, "Attribute") || strEq(name, "Quirk"))) {
+                PLOGD("ignoring %s specified not directly in a MediaCodec", name);
+                return;
+            } else if (err == NO_INIT) {
+                break;
             }
-            break;
+            updateStatus(err);
+            return;
         }
 
         default:
             break;
     }
 
+    if (section != SECTION_UNKNOWN) {
+        PLOGD("Ignoring unrecognized tag <%s>", name);
+    }
+    mState->enterSection(SECTION_UNKNOWN);
 }
 
-void MediaCodecsXmlParser::endElementHandler(const char *name) {
-    switch (mCurrentSection) {
+void MediaCodecsXmlParser::Impl::Parser::endElementHandler(const char *name) {
+    // XMLParser handles tag matching, so we really just need to handle the section state here
+    Section section = mState->section();
+    switch (section) {
+        case SECTION_INCLUDE:
+        {
+            // this could also be any of: Included, MediaCodecs
+            if (strEq(name, "Include")) {
+                mState->exitSection();
+                return;
+            }
+            break;
+        }
+
         case SECTION_SETTINGS:
         {
+            // this could also be any of: Domain, Variant, Setting
             if (strEq(name, "Settings")) {
-                mCurrentSection = SECTION_TOPLEVEL;
+                mState->exitSection();
             }
             break;
         }
 
         case SECTION_DECODERS:
-        {
-            if (strEq(name, "Decoders")) {
-                mCurrentSection = SECTION_TOPLEVEL;
-            }
-            break;
-        }
-
         case SECTION_ENCODERS:
+        case SECTION_UNKNOWN:
         {
-            if (strEq(name, "Encoders")) {
-                mCurrentSection = SECTION_TOPLEVEL;
-            }
+            mState->exitSection();
             break;
         }
 
         case SECTION_DECODER_TYPE:
         case SECTION_ENCODER_TYPE:
         {
+            // this could also be any of: Alias, Limit, Feature
             if (strEq(name, "Type")) {
-                mCurrentSection =
-                        (mCurrentSection == SECTION_DECODER_TYPE ?
-                        SECTION_DECODER : SECTION_ENCODER);
-
-                mCurrentType = mCurrentCodec->second.typeMap.end();
+                mState->exitSection();
+                mState->exitCodecOrType();
             }
             break;
         }
 
         case SECTION_DECODER:
-        {
-            if (strEq(name, "MediaCodec")) {
-                mCurrentSection = SECTION_DECODERS;
-                mCurrentName.clear();
-            }
-            break;
-        }
-
         case SECTION_ENCODER:
         {
+            // this could also be any of: Alias, Limit, Quirk, Variant
             if (strEq(name, "MediaCodec")) {
-                mCurrentSection = SECTION_ENCODERS;
-                mCurrentName.clear();
+                mState->exitSection();
+                mState->exitCodecOrType();
+                mState->exitVariants();
             }
             break;
         }
 
-        case SECTION_INCLUDE:
+        case SECTION_VARIANT:
         {
-            if (strEq(name, "Include") && (mSectionStack.size() > 0)) {
-                mCurrentSection = mSectionStack.back();
-                mSectionStack.pop_back();
+            // this could also be any of: Alias, Limit, Quirk
+            if (strEq(name, "Variant")) {
+                mState->exitSection();
+                mState->exitVariants();
+                return;
             }
             break;
         }
@@ -434,264 +824,302 @@
         default:
             break;
     }
-
 }
 
-status_t MediaCodecsXmlParser::addSettingFromAttributes(const char **attrs) {
-    const char *name = nullptr;
-    const char *value = nullptr;
-    const char *update = nullptr;
+status_t MediaCodecsXmlParser::Impl::Parser::addSetting(const char **attrs, const char *prefix) {
+    const char *a_name = nullptr;
+    const char *a_value = nullptr;
+    const char *a_update = nullptr;
+    bool isBoolean = false;
 
     size_t i = 0;
     while (attrs[i] != nullptr) {
-        if (strEq(attrs[i], "name")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addSettingFromAttributes: name is null");
-                return BAD_VALUE;
-            }
-            name = attrs[i];
-        } else if (strEq(attrs[i], "value")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addSettingFromAttributes: value is null");
-                return BAD_VALUE;
-            }
-            value = attrs[i];
-        } else if (strEq(attrs[i], "update")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addSettingFromAttributes: update is null");
-                return BAD_VALUE;
-            }
-            update = attrs[i];
-        } else {
-            ALOGE("addSettingFromAttributes: unrecognized attribute: %s", attrs[i]);
+        CHECK((i & 1) == 0);
+        if (attrs[i + 1] == nullptr) {
+            PLOGD("Setting: attribute '%s' is null", attrs[i]);
             return BAD_VALUE;
         }
+
+        if (strEq(attrs[i], "name")) {
+            a_name = attrs[++i];
+        } else if (strEq(attrs[i], "value") || strEq(attrs[i], "enabled")) {
+            if (a_value) {
+                PLOGD("Setting: redundant attribute '%s'", attrs[i]);
+                return BAD_VALUE;
+            }
+            isBoolean = strEq(attrs[i], "enabled");
+            a_value = attrs[++i];
+        } else if (strEq(attrs[i], "update")) {
+            a_update = attrs[++i];
+        } else {
+            PLOGD("Setting: ignoring unrecognized attribute '%s'", attrs[i]);
+            ++i;
+        }
         ++i;
     }
 
-    if (name == nullptr || value == nullptr) {
-        ALOGE("addSettingFromAttributes: name or value unspecified");
+    if (a_name == nullptr || a_value == nullptr) {
+        PLOGD("Setting with no 'name' or 'value' attribute");
         return BAD_VALUE;
     }
 
     // Boolean values are converted to "0" or "1".
-    if (strHasPrefix(name, "supports-")) {
-        value = parseBoolean(value) ? "1" : "0";
+    if (strHasPrefix(a_name, "supports-") || isBoolean) {
+        a_value = parseBoolean(a_value) ? "1" : "0";
     }
 
-    mUpdate = (update != nullptr) && parseBoolean(update);
-    auto attribute = mServiceAttributeMap.find(name);
+    bool update = (a_update != nullptr) && parseBoolean(a_update);
+    Result res = mState->data().addGlobal(std::string(prefix ? : "") + a_name, a_value, update);
+    if (res != OK) {
+        PLOGD("Setting: %s", res.error().c_str());
+    }
+    return res;
+}
+
+MediaCodecsXmlParser::Impl::Result MediaCodecsXmlParser::Impl::Data::addGlobal(
+        std::string key, std::string value, bool updating) {
+    auto attribute = mServiceAttributeMap.find(key);
     if (attribute == mServiceAttributeMap.end()) { // New attribute name
-        if (mUpdate) {
-            ALOGE("addSettingFromAttributes: updating non-existing setting");
-            return BAD_VALUE;
+        if (updating) {
+            return { NAME_NOT_FOUND, "cannot update non-existing setting" };
         }
-        mServiceAttributeMap.insert(Attribute(name, value));
+        mServiceAttributeMap.insert(Attribute(key, value));
     } else { // Existing attribute name
-        if (!mUpdate) {
-            ALOGE("addSettingFromAttributes: adding existing setting");
-        }
         attribute->second = value;
+        if (!updating) {
+            return { ALREADY_EXISTS, "updating existing setting" };
+        }
     }
 
     return OK;
 }
 
-status_t MediaCodecsXmlParser::addMediaCodecFromAttributes(
-        bool encoder, const char **attrs) {
-    const char *name = nullptr;
-    const char *type = nullptr;
-    const char *update = nullptr;
-    const char *rank = nullptr;
+status_t MediaCodecsXmlParser::Impl::Parser::enterMediaCodec(
+        const char **attrs, bool encoder) {
+    const char *a_name = nullptr;
+    const char *a_type = nullptr;
+    const char *a_update = nullptr;
+    const char *a_rank = nullptr;
+    const char *a_domain = nullptr;
+    const char *a_variant = nullptr;
+    const char *a_enabled = nullptr;
 
     size_t i = 0;
     while (attrs[i] != nullptr) {
-        if (strEq(attrs[i], "name")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addMediaCodecFromAttributes: name is null");
-                return BAD_VALUE;
-            }
-            name = attrs[i];
-        } else if (strEq(attrs[i], "type")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addMediaCodecFromAttributes: type is null");
-                return BAD_VALUE;
-            }
-            type = attrs[i];
-        } else if (strEq(attrs[i], "update")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addMediaCodecFromAttributes: update is null");
-                return BAD_VALUE;
-            }
-            update = attrs[i];
-        } else if (strEq(attrs[i], "rank")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addMediaCodecFromAttributes: rank is null");
-                return BAD_VALUE;
-            }
-            rank = attrs[i];
-        } else {
-            ALOGE("addMediaCodecFromAttributes: unrecognized attribute: %s", attrs[i]);
+        CHECK((i & 1) == 0);
+        if (attrs[i + 1] == nullptr) {
+            PLOGD("MediaCodec: attribute '%s' is null", attrs[i]);
             return BAD_VALUE;
         }
+
+        if (strEq(attrs[i], "name")) {
+            a_name = attrs[++i];
+        } else if (strEq(attrs[i], "type")) {
+            a_type = attrs[++i];
+        } else if (strEq(attrs[i], "update")) {
+            a_update = attrs[++i];
+        } else if (strEq(attrs[i], "rank")) {
+            a_rank = attrs[++i];
+        } else if (strEq(attrs[i], "domain")) {
+            a_domain = attrs[++i];
+        } else if (strEq(attrs[i], "variant")) {
+            a_variant = attrs[++i];
+        } else if (strEq(attrs[i], "enabled")) {
+            a_enabled = attrs[++i];
+        } else {
+            PLOGD("MediaCodec: ignoring unrecognized attribute '%s'", attrs[i]);
+            ++i;
+        }
         ++i;
     }
 
-    if (name == nullptr) {
-        ALOGE("addMediaCodecFromAttributes: name not found");
+    if (a_name == nullptr) {
+        PLOGD("MediaCodec with no 'name' attribute");
         return BAD_VALUE;
     }
 
-    mUpdate = (update != nullptr) && parseBoolean(update);
-    mCurrentCodec = mCodecMap.find(name);
-    if (mCurrentCodec == mCodecMap.end()) { // New codec name
-        if (mUpdate) {
-            ALOGW("addMediaCodecFromAttributes: cannot update "
-                  "non-existing codec \"%s\".", name);
-            return BAD_VALUE;
+    bool update = (a_update != nullptr) && parseBoolean(a_update);
+    if (a_domain != nullptr) {
+        // disable codecs with domain by default (unless updating)
+        if (!a_enabled && !update) {
+            a_enabled = "false";
+        }
+    }
+
+    Result res = mState->enterMediaCodec(encoder, a_name, a_type, update);
+    if (res != OK) {
+        logAnyErrors(res);
+        return res;
+    }
+
+    return updateMediaCodec(
+            a_rank, parseCommaSeparatedStringSet(a_domain),
+            parseCommaSeparatedStringSet(a_variant), a_enabled);
+}
+
+MediaCodecsXmlParser::Impl::Result
+MediaCodecsXmlParser::Impl::State::enterMediaCodec(
+        bool encoder, const char *name, const char *type, bool updating) {
+    // store name even in case of an error
+    CodecMap::iterator codecIt = mData->mCodecMap.find(name);
+    TypeMap::iterator typeIt;
+    if (codecIt == mData->mCodecMap.end()) { // New codec name
+        if (updating) {
+            return { NAME_NOT_FOUND, "MediaCodec: cannot update non-existing codec" };
         }
         // Create a new codec in mCodecMap
-        mCurrentCodec = mCodecMap.insert(
-                Codec(name, CodecProperties())).first;
+        codecIt = mData->mCodecMap.insert(Codec(name, CodecProperties())).first;
         if (type != nullptr) {
-            mCurrentType = mCurrentCodec->second.typeMap.insert(
-                    Type(type, AttributeMap())).first;
+            typeIt = codecIt->second.typeMap.insert(Type(type, AttributeMap())).first;
         } else {
-            mCurrentType = mCurrentCodec->second.typeMap.end();
+            typeIt = codecIt->second.typeMap.end();
         }
-        mCurrentCodec->second.isEncoder = encoder;
-        mCurrentCodec->second.order = mCodecCounter++;
+        codecIt->second.isEncoder = encoder;
+        codecIt->second.order = mData->mCodecMap.size();
     } else { // Existing codec name
-        if (!mUpdate) {
-            ALOGW("addMediaCodecFromAttributes: trying to add "
-                  "existing codec \"%s\"", name);
-            return ALREADY_EXISTS;
+        if (!updating) {
+            return { ALREADY_EXISTS, "MediaCodec: cannot add existing codec" };
         }
         if (type != nullptr) {
-            mCurrentType = mCurrentCodec->second.typeMap.find(type);
-            if (mCurrentType == mCurrentCodec->second.typeMap.end()) {
-                ALOGE("addMediaCodecFromAttributes: cannot update "
-                      "non-existing type \"%s\" for codec \"%s\"",
-                        type, name);
-                return BAD_VALUE;
+            typeIt = codecIt->second.typeMap.find(type);
+            if (typeIt == codecIt->second.typeMap.end()) {
+                return { NAME_NOT_FOUND, "MediaCodec: cannot update non-existing type for codec" };
             }
         } else {
             // This should happen only when the codec has at most one type.
-            mCurrentType = mCurrentCodec->second.typeMap.begin();
-            if (mCurrentType == mCurrentCodec->second.typeMap.end()) {
-                ALOGE("addMediaCodecFromAttributes: cannot update "
-                      "codec \"%s\" without type specified", name);
-                return BAD_VALUE;
+            typeIt = codecIt->second.typeMap.begin();
+            if (typeIt == codecIt->second.typeMap.end()
+                    || codecIt->second.typeMap.size() != 1) {
+                return { BAD_VALUE, "MediaCodec: cannot update codec without type specified" };
             }
         }
     }
+    mCurrent.emplace_back(CodecAndType{name, codecIt, typeIt, updating});
+    return OK;
+}
+
+status_t MediaCodecsXmlParser::Impl::Parser::updateMediaCodec(
+        const char *rank, const StringSet &domains, const StringSet &variants,
+        const char *enabled) {
+    CHECK(mState->inCodec());
+    CodecProperties &codec = mState->codec();
 
     if (rank != nullptr) {
-        if (!mCurrentCodec->second.rank.empty() && mCurrentCodec->second.rank != rank) {
-            ALOGE("addMediaCodecFromAttributes: code \"%s\" rank changed from \"%s\" to \"%s\"",
-                    name, mCurrentCodec->second.rank.c_str(), rank);
-            return BAD_VALUE;
-        }
-        mCurrentCodec->second.rank = rank;
+        ALOGD_IF(!codec.rank.empty() && codec.rank != rank,
+                "codec '%s' rank changed from '%s' to '%s'",
+                mState->codecName().c_str(), codec.rank.c_str(), rank);
+        codec.rank = rank;
     }
 
+    codec.variantSet = variants;
+
+    for (const std::string &domain : domains) {
+        if (domain.size() && domain.at(0) == '!') {
+            codec.domainSet.erase(domain.substr(1));
+        } else {
+            codec.domainSet.emplace(domain);
+        }
+    }
+
+    if (enabled != nullptr) {
+        if (parseBoolean(enabled)) {
+            codec.quirkSet.erase("attribute::disabled");
+            ALOGD("enabling %s", mState->codecName().c_str());
+        } else {
+            codec.quirkSet.emplace("attribute::disabled");
+            ALOGD("disabling %s", mState->codecName().c_str());
+        }
+    }
     return OK;
 }
 
-status_t MediaCodecsXmlParser::addQuirk(const char **attrs, const char *tag) {
-    if (mCurrentCodec == mCodecMap.end()) {
-        return BAD_VALUE;
-    }
-
-    const char *name = nullptr;
+status_t MediaCodecsXmlParser::Impl::Parser::addQuirk(const char **attrs, const char *prefix) {
+    CHECK(mState->inCodec());
+    const char *a_name = nullptr;
 
     size_t i = 0;
     while (attrs[i] != nullptr) {
-        if (strEq(attrs[i], "name")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addQuirk: name is null");
-                return BAD_VALUE;
-            }
-            name = attrs[i];
-        } else {
-            ALOGE("addQuirk: unrecognized attribute: %s", attrs[i]);
+        CHECK((i & 1) == 0);
+        if (attrs[i + 1] == nullptr) {
+            PLOGD("Quirk: attribute '%s' is null", attrs[i]);
             return BAD_VALUE;
         }
+
+        if (strEq(attrs[i], "name")) {
+            a_name = attrs[++i];
+        } else {
+            PLOGD("Quirk: ignoring unrecognized attribute '%s'", attrs[i]);
+            ++i;
+        }
         ++i;
     }
 
-    if (name == nullptr) {
-        ALOGE("addQuirk: name not found");
+    if (a_name == nullptr) {
+        PLOGD("Quirk with no 'name' attribute");
         return BAD_VALUE;
     }
 
-    std::string tagString = tag;
-    std::transform(tagString.begin(), tagString.end(), tagString.begin(), ::tolower);
-    tagString.append("::");
-    tagString.append(name);
-    mCurrentCodec->second.quirkSet.emplace(tagString.c_str());
-    ALOGI("adding %s to %s", tagString.c_str(), mCurrentCodec->first.c_str());
+    std::string key = std::string(prefix ? : "") + a_name;
+    mState->codec().quirkSet.emplace(key);
+    ALOGV("adding %s to %s", key.c_str(), mState->codecName().c_str());
     return OK;
 }
 
-status_t MediaCodecsXmlParser::addTypeFromAttributes(const char **attrs, bool encoder) {
-    if (mCurrentCodec == mCodecMap.end()) {
-        return BAD_VALUE;
-    }
+status_t MediaCodecsXmlParser::Impl::Parser::enterType(const char **attrs) {
+    CHECK(mState->inCodec());
 
-    const char *name = nullptr;
-    const char *update = nullptr;
+    const char *a_name = nullptr;
+    const char *a_update = nullptr;
 
     size_t i = 0;
     while (attrs[i] != nullptr) {
+        CHECK((i & 1) == 0);
+        if (attrs[i + 1] == nullptr) {
+            PLOGD("Type: attribute '%s' is null", attrs[i]);
+            return BAD_VALUE;
+        }
+
         if (strEq(attrs[i], "name")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addTypeFromAttributes: name is null");
-                return BAD_VALUE;
-            }
-            name = attrs[i];
+            a_name = attrs[++i];
         } else if (strEq(attrs[i], "update")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addTypeFromAttributes: update is null");
-                return BAD_VALUE;
-            }
-            update = attrs[i];
+            a_update = attrs[++i];
         } else {
-            ALOGE("addTypeFromAttributes: unrecognized attribute: %s", attrs[i]);
-            return BAD_VALUE;
+            PLOGD("Type: ignoring unrecognized attribute '%s'", attrs[i]);
+            ++i;
         }
         ++i;
     }
 
-    if (name == nullptr) {
+    if (a_name == nullptr) {
+        PLOGD("Type with no 'name' attribute");
         return BAD_VALUE;
     }
 
-    mCurrentCodec->second.isEncoder = encoder;
-    mCurrentType = mCurrentCodec->second.typeMap.find(name);
-    if (!mUpdate) {
-        if (mCurrentType != mCurrentCodec->second.typeMap.end()) {
-            ALOGW("addTypeFromAttributes: trying to update "
-                  "existing type \"%s\"", name);
-            return ALREADY_EXISTS;
+    bool update = (a_update != nullptr) && parseBoolean(a_update);
+    return mState->enterType(a_name, update);
+}
+
+MediaCodecsXmlParser::Impl::Result
+MediaCodecsXmlParser::Impl::State::enterType(const char *name, bool update) {
+    update = update || updating(); // handle parent
+
+    CodecMap::iterator codecIt = mCurrent.back().mCodec;
+    TypeMap::iterator typeIt = codecIt->second.typeMap.find(name);
+    if (!update) {
+        if (typeIt != codecIt->second.typeMap.end()) {
+            return { ALREADY_EXISTS, "trying to update existing type '" + std::string(name) + "'" };
         }
-        mCurrentType = mCurrentCodec->second.typeMap.insert(
-                Type(name, AttributeMap())).first;
-    } else if (mCurrentType == mCurrentCodec->second.typeMap.end()) {
-        ALOGE("addTypeFromAttributes: updating non-existing type");
-        return BAD_VALUE;
+        typeIt = codecIt->second.typeMap.insert(Type(name, AttributeMap())).first;
+    } else if (typeIt == codecIt->second.typeMap.end()) {
+        return { NAME_NOT_FOUND, "addType: updating non-existing type" };
     }
+    mCurrent.push_back({ codecName(), codecIt, typeIt, update });
+    CHECK(inType());
     return OK;
 }
 
-status_t MediaCodecsXmlParser::addLimit(const char **attrs) {
-    if (mCurrentCodec == mCodecMap.end()) {
-        return BAD_VALUE;
-    }
-    if (mCurrentType == mCurrentCodec->second.typeMap.end()) {
-        return BAD_VALUE;
-    }
-
+status_t MediaCodecsXmlParser::Impl::Parser::addLimit(const char **attrs) {
+    CHECK(mState->inType());
     const char* a_name = nullptr;
     const char* a_default = nullptr;
     const char* a_in = nullptr;
@@ -704,69 +1132,39 @@
 
     size_t i = 0;
     while (attrs[i] != nullptr) {
-        if (strEq(attrs[i], "name")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addLimit: name is null");
-                return BAD_VALUE;
-            }
-            a_name = attrs[i];
-        } else if (strEq(attrs[i], "default")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addLimit: default is null");
-                return BAD_VALUE;
-            }
-            a_default = attrs[i];
-        } else if (strEq(attrs[i], "in")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addLimit: in is null");
-                return BAD_VALUE;
-            }
-            a_in = attrs[i];
-        } else if (strEq(attrs[i], "max")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addLimit: max is null");
-                return BAD_VALUE;
-            }
-            a_max = attrs[i];
-        } else if (strEq(attrs[i], "min")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addLimit: min is null");
-                return BAD_VALUE;
-            }
-            a_min = attrs[i];
-        } else if (strEq(attrs[i], "range")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addLimit: range is null");
-                return BAD_VALUE;
-            }
-            a_range = attrs[i];
-        } else if (strEq(attrs[i], "ranges")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addLimit: ranges is null");
-                return BAD_VALUE;
-            }
-            a_ranges = attrs[i];
-        } else if (strEq(attrs[i], "scale")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addLimit: scale is null");
-                return BAD_VALUE;
-            }
-            a_scale = attrs[i];
-        } else if (strEq(attrs[i], "value")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addLimit: value is null");
-                return BAD_VALUE;
-            }
-            a_value = attrs[i];
-        } else {
-            ALOGE("addLimit: unrecognized limit: %s", attrs[i]);
+        CHECK((i & 1) == 0);
+        if (attrs[i + 1] == nullptr) {
+            PLOGD("Limit: attribute '%s' is null", attrs[i]);
             return BAD_VALUE;
         }
+
+        if (strEq(attrs[i], "name")) {
+            a_name = attrs[++i];
+        } else if (strEq(attrs[i], "default")) {
+            a_default = attrs[++i];
+        } else if (strEq(attrs[i], "in")) {
+            a_in = attrs[++i];
+        } else if (strEq(attrs[i], "max")) {
+            a_max = attrs[++i];
+        } else if (strEq(attrs[i], "min")) {
+            a_min = attrs[++i];
+        } else if (strEq(attrs[i], "range")) {
+            a_range = attrs[++i];
+        } else if (strEq(attrs[i], "ranges")) {
+            a_ranges = attrs[++i];
+        } else if (strEq(attrs[i], "scale")) {
+            a_scale = attrs[++i];
+        } else if (strEq(attrs[i], "value")) {
+            a_value = attrs[++i];
+        } else {
+            PLOGD("Limit: ignoring unrecognized limit: %s", attrs[i]);
+            ++i;
+        }
         ++i;
     }
 
     if (a_name == nullptr) {
-        ALOGE("limit with no 'name' attribute");
+        PLOGD("Limit with no 'name' attribute");
         return BAD_VALUE;
     }
 
@@ -774,8 +1172,50 @@
     // measured-frame-rate, measured-blocks-per-second: range
     // quality: range + default + [scale]
     // complexity: range + default
-    std::string range;
-    if (strEq(a_name, "aspect-ratio") ||
+    std::string key = a_name, value;
+
+    // don't allow specifying more than one of value, range or min/max
+    if ((a_value != nullptr) + (a_range != nullptr) + (a_ranges != nullptr)
+            + (a_min != nullptr || a_max != nullptr) > 1) {
+        PLOGD("Limit '%s' has multiple 'min'/'max', 'range', 'ranges' or 'value' attributes",
+                a_name);
+        return BAD_VALUE;
+    }
+
+    // Min/max limits (only containing min or max attribute)
+    //
+    // Current "max" limits are "channel-count", "concurrent-instances".
+    // There are no current "min" limits
+    //
+    // Range limits. "range" is specified in exactly one of the following forms:
+    // 1) min-max
+    // 2) value-value
+    // 3) range
+    //
+    // Current range limits are "aspect-ratio", "bitrate", "block-count", "blocks-per-second",
+    // "complexity", "frame-rate", "quality", "size", "measured-blocks-per-second",
+    // "performance-point-*", "measured-frame-rate-*"
+    //
+    // Other limits (containing only value or ranges)
+    //
+    // Current ranges limit is "sample-rate"
+    if ((a_min != nullptr) ^ (a_max != nullptr)) {
+        // min/max limit
+        if (a_max != nullptr) {
+            key = "max-" + key;
+            value = a_max;
+        } else if (a_min != nullptr) {
+            key = "min-" + key;
+            value = a_min;
+        }
+    } else if (a_min != nullptr && a_max != nullptr) {
+        // min-max
+        key += "-range";
+        value = a_min + std::string("-") + a_max;
+    } else if (a_value != nullptr) {
+        // value-value or value
+        value = a_value;
+        if (strEq(a_name, "aspect-ratio") ||
             strEq(a_name, "bitrate") ||
             strEq(a_name, "block-count") ||
             strEq(a_name, "blocks-per-second") ||
@@ -786,249 +1226,199 @@
             strEq(a_name, "measured-blocks-per-second") ||
             strHasPrefix(a_name, "performance-point-") ||
             strHasPrefix(a_name, "measured-frame-rate-")) {
-        // "range" is specified in exactly one of the following forms:
-        // 1) min-max
-        // 2) value-value
-        // 3) range
-        if (a_min != nullptr && a_max != nullptr) {
-            // min-max
-            if (a_range != nullptr || a_value != nullptr) {
-                return limitError(a_name, "has 'min' and 'max' as well as 'range' or "
-                        "'value' attributes");
-            }
-            range = a_min;
-            range += '-';
-            range += a_max;
-        } else if (a_min != nullptr || a_max != nullptr) {
-            return limitError(a_name, "has only 'min' or 'max' attribute");
-        } else if (a_value != nullptr) {
-            // value-value
-            if (a_range != nullptr) {
-                return limitError(a_name, "has both 'range' and 'value' attributes");
-            }
-            range = a_value;
-            range += '-';
-            range += a_value;
-        } else if (a_range == nullptr) {
-            return limitError(a_name, "with no 'range', 'value' or 'min'/'max' attributes");
-        } else {
-            // range
-            range = a_range;
+            key += "-range";
+            value += std::string("-") + a_value;
         }
-
-        // "aspect-ratio" requires some special treatment.
-        if (strEq(a_name, "aspect-ratio")) {
-            // "aspect-ratio" must have "in".
-            if (a_in == nullptr) {
-                return limitFoundMissingAttr(a_name, "in", false);
-            }
-            // "in" must be either "pixels" or "blocks".
-            if (!strEq(a_in, "pixels") && !strEq(a_in, "blocks")) {
-                return limitInvalidAttr(a_name, "in", a_in);
-            }
-            // name will be "pixel-aspect-ratio-range" or
-            // "block-aspect-ratio-range".
-            mCurrentType->second[
-                    std::string(a_in).substr(0, strlen(a_in) - 1) +
-                    "-aspect-ratio-range"] = range;
-        } else {
-            // For everything else (apart from "aspect-ratio"), simply append
-            // "-range" to the name for the range-type property.
-            mCurrentType->second[std::string(a_name) + "-range"] = range;
-
-            // Only "quality" may have "scale".
-            if (!strEq(a_name, "quality") && a_scale != nullptr) {
-                return limitFoundMissingAttr(a_name, "scale");
-            } else if (strEq(a_name, "quality")) {
-                // The default value of "quality-scale" is "linear".
-                mCurrentType->second["quality-scale"] = a_scale == nullptr ?
-                        "linear" : a_scale;
-            }
-
-            // "quality" and "complexity" must have "default".
-            // Other limits must not have "default".
-            if (strEq(a_name, "quality") || strEq(a_name, "complexity")) {
-                if (a_default == nullptr) {
-                    return limitFoundMissingAttr(a_name, "default", false);
-                }
-                // name will be "quality-default" or "complexity-default".
-                mCurrentType->second[std::string(a_name) + "-default"] = a_default;
-            } else if (a_default != nullptr) {
-                return limitFoundMissingAttr(a_name, "default", true);
-            }
-        }
+    } else if (a_range != nullptr) {
+        // range
+        key += "-range";
+        value = a_range;
+    } else if (a_ranges != nullptr) {
+        // ranges
+        key += "-ranges";
+        value = a_ranges;
     } else {
-        if (a_default != nullptr) {
-            return limitFoundMissingAttr(a_name, "default");
-        }
-        if (a_in != nullptr) {
-            return limitFoundMissingAttr(a_name, "in");
-        }
-        if (a_scale != nullptr) {
-            return limitFoundMissingAttr(a_name, "scale");
-        }
-        if (a_range != nullptr) {
-            return limitFoundMissingAttr(a_name, "range");
-        }
-        if (a_min != nullptr) {
-            return limitFoundMissingAttr(a_name, "min");
-        }
-
-        if (a_max != nullptr) {
-            // "max" must exist if and only if name is "channel-count" or
-            // "concurrent-instances".
-            // "min" is not ncessary.
-            if (strEq(a_name, "channel-count") ||
-                    strEq(a_name, "concurrent-instances")) {
-                mCurrentType->second[std::string("max-") + a_name] = a_max;
-            } else {
-                return limitFoundMissingAttr(a_name, "max", false);
-            }
-        } else if (strEq(a_name, "channel-count") ||
-                strEq(a_name, "concurrent-instances")) {
-            return limitFoundMissingAttr(a_name, "max");
-        }
-
-        if (a_ranges != nullptr) {
-            // "ranges" must exist if and only if name is "sample-rate".
-            if (strEq(a_name, "sample-rate")) {
-                mCurrentType->second["sample-rate-ranges"] = a_ranges;
-            } else {
-                return limitFoundMissingAttr(a_name, "ranges", false);
-            }
-        } else if (strEq(a_name, "sample-rate")) {
-            return limitFoundMissingAttr(a_name, "ranges");
-        }
-
-        if (a_value != nullptr) {
-            // "value" must exist if and only if name is "alignment" or
-            // "block-size".
-            if (strEq(a_name, "alignment") || strEq(a_name, "block-size")) {
-                mCurrentType->second[a_name] = a_value;
-            } else {
-                return limitFoundMissingAttr(a_name, "value", false);
-            }
-        } else if (strEq(a_name, "alignment") || strEq(a_name, "block-size")) {
-            return limitFoundMissingAttr(a_name, "value", false);
-        }
-
+        PLOGD("Limit '%s' with no 'range', 'value' or 'min'/'max' attributes", a_name);
+        return BAD_VALUE;
     }
 
+    // handle 'in' attribute - this changes the key
+    if (a_in != nullptr) {
+        // Currently "aspect-ratio" uses in attribute
+        const size_t a_in_len = strlen(a_in);
+        key = std::string(a_in, a_in_len - a_in[a_in_len] == 's') + '-' + key;
+    }
+
+    // handle 'scale' attribute - this adds a new detail
+    if (a_scale != nullptr) {
+        mState->addDetail(a_name + std::string("-scale"), a_scale);
+    } else if (strEq(a_name, "quality")) {
+        // The default value of "quality-scale" is "linear" even if unspecified.
+        mState->addDetail(a_name + std::string("-scale"), "linear");
+    }
+
+    // handle 'default' attribute - this adds a new detail
+    if (a_default != nullptr) {
+        mState->addDetail(a_name + std::string("-default"), a_default);
+    }
+
+    mState->addDetail(key, value);
     return OK;
 }
 
-status_t MediaCodecsXmlParser::addFeature(const char **attrs) {
-    if (mCurrentCodec == mCodecMap.end()) {
-        return BAD_VALUE;
+void MediaCodecsXmlParser::Impl::State::addDetail(
+        const std::string &key, const std::string &value) {
+    CHECK(inType());
+    ALOGI("limit: %s = %s", key.c_str(), value.c_str());
+    const StringSet &variants = mVariantsStack.back();
+    if (variants.empty()) {
+        type()[key] = value;
+    } else {
+        for (const std::string &variant : variants) {
+            type()[variant + ":::" + key] = value;
+        }
     }
-    if (mCurrentType == mCurrentCodec->second.typeMap.end()) {
+}
+
+status_t MediaCodecsXmlParser::Impl::Parser::limitVariants(const char **attrs) {
+    const char* a_name = nullptr;
+
+    size_t i = 0;
+    while (attrs[i] != nullptr) {
+        CHECK((i & 1) == 0);
+        if (attrs[i + 1] == nullptr) {
+            PLOGD("Variant: attribute '%s' is null", attrs[i]);
+            return BAD_VALUE;
+        }
+        if (strEq(attrs[i], "name")) {
+            a_name = attrs[++i];
+        } else {
+            PLOGD("Variant: ignoring unrecognized attribute: %s", attrs[i]);
+            ++i;
+        }
+        ++i;
+    }
+
+    if (a_name == nullptr || *a_name == '\0') {
+        PLOGD("Variant with no or empty 'name' attribute");
         return BAD_VALUE;
     }
 
+    StringSet variants;
+    for (const std::string &variant : parseCommaSeparatedStringSet(a_name)) {
+        if (mState->variants().count(variant)) {
+            variants.emplace(variant);
+        } else {
+            PLOGD("Variant: variant '%s' not in parent variants", variant.c_str());
+            return BAD_VALUE;
+        }
+    }
+    mState->enterVariants(variants);
+    return OK;
+}
+
+status_t MediaCodecsXmlParser::Impl::Parser::addFeature(const char **attrs) {
+    CHECK(mState->inType());
     size_t i = 0;
-    const char *name = nullptr;
+    const char *a_name = nullptr;
     int32_t optional = -1;
     int32_t required = -1;
-    const char *value = nullptr;
+    const char *a_value = nullptr;
 
     while (attrs[i] != nullptr) {
-        if (strEq(attrs[i], "name")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addFeature: name is null");
-                return BAD_VALUE;
-            }
-            name = attrs[i];
-        } else if (strEq(attrs[i], "optional")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addFeature: optional is null");
-                return BAD_VALUE;
-            }
-            optional = parseBoolean(attrs[i]) ? 1 : 0;
-        } else if (strEq(attrs[i], "required")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addFeature: required is null");
-                return BAD_VALUE;
-            }
-            required = parseBoolean(attrs[i]) ? 1 : 0;
-        } else if (strEq(attrs[i], "value")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addFeature: value is null");
-                return BAD_VALUE;
-            }
-            value = attrs[i];
-        } else {
-            ALOGE("addFeature: unrecognized attribute: %s", attrs[i]);
+        CHECK((i & 1) == 0);
+        if (attrs[i + 1] == nullptr) {
+            PLOGD("Feature: attribute '%s' is null", attrs[i]);
             return BAD_VALUE;
         }
+
+        if (strEq(attrs[i], "name")) {
+            a_name = attrs[++i];
+        } else if (strEq(attrs[i], "optional")) {
+            optional = parseBoolean(attrs[++i]) ? 1 : 0;
+        } else if (strEq(attrs[i], "required")) {
+            required = parseBoolean(attrs[++i]) ? 1 : 0;
+        } else if (strEq(attrs[i], "value")) {
+            a_value = attrs[++i];
+        } else {
+            PLOGD("Feature: ignoring unrecognized attribute '%s'", attrs[i]);
+            ++i;
+        }
         ++i;
     }
 
     // Every feature must have a name.
-    if (name == nullptr) {
-        ALOGE("feature with no 'name' attribute");
+    if (a_name == nullptr) {
+        PLOGD("Feature with no 'name' attribute");
         return BAD_VALUE;
     }
 
-    if ((optional != -1) || (required != -1)) {
-        if (optional == required) {
-            ALOGE("feature '%s' is both/neither optional and required", name);
+    if (a_value != nullptr) {
+        if (optional != -1 || required != -1) {
+            PLOGD("Feature '%s' has both value and optional/required attributes", a_name);
             return BAD_VALUE;
         }
-        if ((optional == 1) || (required == 1)) {
-            if (value != nullptr) {
-                ALOGE("feature '%s' cannot have extra 'value'", name);
-                return BAD_VALUE;
-            }
-            mCurrentType->second[std::string("feature-") + name] =
-                    optional == 1 ? "0" : "1";
-            return OK;
+    } else {
+        if (optional == required && optional != -1) {
+            PLOGD("Feature '%s' is both/neither optional and required", a_name);
+            return BAD_VALUE;
         }
+        a_value = (required == 1 || optional == 0) ? "1" : "0";
     }
-    mCurrentType->second[std::string("feature-") + name] = value == nullptr ?
-            "0" : value;
+
+    mState->addDetail(std::string("feature-") + a_name, a_value ? : "0");
     return OK;
 }
 
-status_t MediaCodecsXmlParser::addAlias(const char **attrs) {
+status_t MediaCodecsXmlParser::Impl::Parser::addAlias(const char **attrs) {
+    CHECK(mState->inCodec());
     size_t i = 0;
-    const char *name = nullptr;
+    const char *a_name = nullptr;
 
     while (attrs[i] != nullptr) {
-        if (strEq(attrs[i], "name")) {
-            if (attrs[++i] == nullptr) {
-                ALOGE("addAlias: name is null");
-                return BAD_VALUE;
-            }
-            name = attrs[i];
-        } else {
-            ALOGE("addAlias: unrecognized attribute: %s", attrs[i]);
+        CHECK((i & 1) == 0);
+        if (attrs[i + 1] == nullptr) {
+            PLOGD("Alias: attribute '%s' is null", attrs[i]);
             return BAD_VALUE;
         }
+
+        if (strEq(attrs[i], "name")) {
+            a_name = attrs[++i];
+        } else {
+            PLOGD("Alias: ignoring unrecognized attribute '%s'", attrs[i]);
+            ++i;
+        }
         ++i;
     }
 
     // Every feature must have a name.
-    if (name == nullptr) {
-        ALOGE("alias with no 'name' attribute");
+    if (a_name == nullptr) {
+        PLOGD("Alias with no 'name' attribute");
         return BAD_VALUE;
     }
 
-    mCurrentCodec->second.aliases.emplace_back(name);
+    mState->codec().aliases.emplace_back(a_name);
     return OK;
 }
 
 const MediaCodecsXmlParser::AttributeMap&
-        MediaCodecsXmlParser::getServiceAttributeMap() const {
-    return mServiceAttributeMap;
+MediaCodecsXmlParser::getServiceAttributeMap() const {
+    return mImpl->getServiceAttributeMap();
 }
 
 const MediaCodecsXmlParser::CodecMap&
-        MediaCodecsXmlParser::getCodecMap() const {
-    return mCodecMap;
+MediaCodecsXmlParser::getCodecMap() const {
+    return mImpl->getCodecMap();
 }
 
 const MediaCodecsXmlParser::RoleMap&
-        MediaCodecsXmlParser::getRoleMap() const {
+MediaCodecsXmlParser::getRoleMap() const {
+    return mImpl->getRoleMap();
+}
+
+const MediaCodecsXmlParser::RoleMap&
+MediaCodecsXmlParser::Impl::getRoleMap() const {
+    std::lock_guard<std::mutex> guard(mLock);
     if (mRoleMap.empty()) {
         generateRoleMap();
     }
@@ -1036,6 +1426,11 @@
 }
 
 const char* MediaCodecsXmlParser::getCommonPrefix() const {
+    return mImpl->getCommonPrefix();
+}
+
+const char* MediaCodecsXmlParser::Impl::getCommonPrefix() const {
+    std::lock_guard<std::mutex> guard(mLock);
     if (mCommonPrefix.empty()) {
         generateCommonPrefix();
     }
@@ -1043,12 +1438,15 @@
 }
 
 status_t MediaCodecsXmlParser::getParsingStatus() const {
-    return mParsingStatus;
+    return mImpl->getParsingStatus();
 }
 
-void MediaCodecsXmlParser::generateRoleMap() const {
-    for (const auto& codec : mCodecMap) {
-        const auto& codecName = codec.first;
+void MediaCodecsXmlParser::Impl::generateRoleMap() const {
+    for (const auto& codec : mData.mCodecMap) {
+        const auto &codecName = codec.first;
+        if (codecName == "<dummy>") {
+            continue;
+        }
         bool isEncoder = codec.second.isEncoder;
         size_t order = codec.second.order;
         std::string rank = codec.second.rank;
@@ -1116,14 +1514,14 @@
     }
 }
 
-void MediaCodecsXmlParser::generateCommonPrefix() const {
-    if (mCodecMap.empty()) {
+void MediaCodecsXmlParser::Impl::generateCommonPrefix() const {
+    if (mData.mCodecMap.empty()) {
         return;
     }
-    auto i = mCodecMap.cbegin();
+    auto i = mData.mCodecMap.cbegin();
     auto first = i->first.cbegin();
     auto last = i->first.cend();
-    for (++i; i != mCodecMap.cend(); ++i) {
+    for (++i; i != mData.mCodecMap.cend(); ++i) {
         last = std::mismatch(
                 first, last, i->first.cbegin(), i->first.cend()).first;
     }
@@ -1131,4 +1529,3 @@
 }
 
 } // namespace android
-
diff --git a/media/libstagefright/xmlparser/include/media/stagefright/xmlparser/MediaCodecsXmlParser.h b/media/libstagefright/xmlparser/include/media/stagefright/xmlparser/MediaCodecsXmlParser.h
index 7a986b7..b666de4 100644
--- a/media/libstagefright/xmlparser/include/media/stagefright/xmlparser/MediaCodecsXmlParser.h
+++ b/media/libstagefright/xmlparser/include/media/stagefright/xmlparser/MediaCodecsXmlParser.h
@@ -19,34 +19,31 @@
 
 #include <sys/types.h>
 #include <utils/Errors.h>
-#include <utils/Vector.h>
-#include <utils/StrongPointer.h>
 
-#include <string>
-#include <set>
 #include <map>
+#include <mutex>
+#include <set>
+#include <string>
 #include <vector>
 
+struct XML_ParserStruct; // from expat library
+
 namespace android {
 
 class MediaCodecsXmlParser {
 public:
 
     // Treblized media codec list will be located in /odm/etc or /vendor/etc.
-    static constexpr char const* defaultSearchDirs[] =
-            {"/odm/etc", "/vendor/etc", "/etc", nullptr};
-    static constexpr char const* defaultMainXmlName =
-            "media_codecs.xml";
-    static constexpr char const* defaultPerformanceXmlName =
-            "media_codecs_performance.xml";
+    static std::vector<std::string> getDefaultSearchDirs() {
+            return { "/odm/etc", "/vendor/etc", "/etc" };
+    }
+    static std::vector<std::string> getDefaultXmlNames() {
+            return { "media_codecs.xml", "media_codecs_performance.xml" };
+    }
     static constexpr char const* defaultProfilingResultsXmlPath =
             "/data/misc/media/media_codecs_profiling_results.xml";
 
-    MediaCodecsXmlParser(
-            const char* const* searchDirs = defaultSearchDirs,
-            const char* mainXmlName = defaultMainXmlName,
-            const char* performanceXmlName = defaultPerformanceXmlName,
-            const char* profilingResultsXmlPath = defaultProfilingResultsXmlPath);
+    MediaCodecsXmlParser();
     ~MediaCodecsXmlParser();
 
     typedef std::pair<std::string, std::string> Attribute;
@@ -55,7 +52,7 @@
     typedef std::pair<std::string, AttributeMap> Type;
     typedef std::map<std::string, AttributeMap> TypeMap;
 
-    typedef std::set<std::string> QuirkSet;
+    typedef std::set<std::string> StringSet;
 
     /**
      * Properties of a codec (node)
@@ -63,7 +60,9 @@
     struct CodecProperties {
         bool isEncoder;    ///< Whether this codec is an encoder or a decoder
         size_t order;      ///< Order of appearance in the file (starting from 0)
-        QuirkSet quirkSet; ///< Set of quirks requested by this codec
+        StringSet quirkSet; ///< Set of quirks requested by this codec
+        StringSet domainSet; ///< Set of domains this codec is in
+        StringSet variantSet; ///< Set of variants this codec is enabled on
         TypeMap typeMap;   ///< Map of types supported by this codec
         std::vector<std::string> aliases; ///< Name aliases for this codec
         std::string rank;  ///< Rank of this codec. This is a numeric string.
@@ -119,70 +118,31 @@
 
     status_t getParsingStatus() const;
 
+    /**
+     * Parse top level XML files from a group of search directories.
+     *
+     * @param xmlFiles ordered list of XML file names (no paths)
+     * @param searchDirs ordered list of paths to consider
+     *
+     * @return parsing status
+     */
+    status_t parseXmlFilesInSearchDirs(
+            const std::vector<std::string> &xmlFiles = getDefaultXmlNames(),
+            const std::vector<std::string> &searchDirs = getDefaultSearchDirs());
+
+
+    /**
+     * Parse a top level XML file.
+     *
+     * @param path XML file path
+     *
+     * @return parsing status
+     */
+    status_t parseXmlPath(const std::string &path);
+
 private:
-    enum Section {
-        SECTION_TOPLEVEL,
-        SECTION_SETTINGS,
-        SECTION_DECODERS,
-        SECTION_DECODER,
-        SECTION_DECODER_TYPE,
-        SECTION_ENCODERS,
-        SECTION_ENCODER,
-        SECTION_ENCODER_TYPE,
-        SECTION_INCLUDE,
-    };
-
-    status_t mParsingStatus;
-    Section mCurrentSection;
-    bool mUpdate;
-    std::vector<Section> mSectionStack;
-    std::string mHrefBase;
-
-    // Service attributes
-    AttributeMap mServiceAttributeMap;
-
-    // Codec attributes
-    std::string mCurrentName;
-    std::set<std::string> mCodecSet;
-    Codec mCodecListTemp[2048];
-    CodecMap mCodecMap;
-    size_t mCodecCounter;
-    CodecMap::iterator mCurrentCodec;
-    TypeMap::iterator mCurrentType;
-
-    // Role map
-    mutable RoleMap mRoleMap;
-
-    // Computed longest common prefix
-    mutable std::string mCommonPrefix;
-
-    bool parseTopLevelXMLFile(const char *path, bool ignore_errors = false);
-
-    void parseXMLFile(const char *path);
-
-    static void StartElementHandlerWrapper(
-            void *me, const char *name, const char **attrs);
-
-    static void EndElementHandlerWrapper(void *me, const char *name);
-
-    void startElementHandler(const char *name, const char **attrs);
-    void endElementHandler(const char *name);
-
-    status_t includeXMLFile(const char **attrs);
-    status_t addSettingFromAttributes(const char **attrs);
-    status_t addMediaCodecFromAttributes(bool encoder, const char **attrs);
-    void addMediaCodec(bool encoder, const char *name,
-            const char *type = nullptr);
-
-    status_t addQuirk(const char **attrs, const char *tag);
-    status_t addTypeFromAttributes(const char **attrs, bool encoder);
-    status_t addAlias(const char **attrs);
-    status_t addLimit(const char **attrs);
-    status_t addFeature(const char **attrs);
-    void addType(const char *name);
-
-    void generateRoleMap() const;
-    void generateCommonPrefix() const;
+    struct Impl;
+    std::shared_ptr<Impl> mImpl;
 
     MediaCodecsXmlParser(const MediaCodecsXmlParser&) = delete;
     MediaCodecsXmlParser& operator=(const MediaCodecsXmlParser&) = delete;
@@ -191,4 +151,3 @@
 } // namespace android
 
 #endif // MEDIA_STAGEFRIGHT_XMLPARSER_H_
-
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index a48b733..7daa929 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -3277,6 +3277,7 @@
 
         Vector< sp<EffectChain> > effectChains;
         audio_session_t activeHapticSessionId = AUDIO_SESSION_NONE;
+        std::vector<sp<Track>> activeTracks;
 
         // If the device is AUDIO_DEVICE_OUT_BUS, check for downstream latency.
         //
@@ -3563,6 +3564,12 @@
                 }
             }
 
+            // Acquire a local copy of active tracks with lock (release w/o lock).
+            //
+            // Control methods on the track acquire the ThreadBase lock (e.g. start()
+            // stop(), pause(), etc.), but the threadLoop is entitled to call audio
+            // data / buffer methods on tracks from activeTracks without the ThreadBase lock.
+            activeTracks.insert(activeTracks.end(), mActiveTracks.begin(), mActiveTracks.end());
         } // mLock scope ends
 
         if (mBytesRemaining == 0) {
@@ -3577,6 +3584,13 @@
                 threadLoop_sleepTime();
                 if (mSleepTimeUs == 0) {
                     mCurrentWriteLength = mSinkBufferSize;
+
+                    // Tally underrun frames as we are inserting 0s here.
+                    for (const auto& track : activeTracks) {
+                        if (track->mFillingUpStatus == Track::FS_ACTIVE) {
+                            track->mAudioTrackServerProxy->tallyUnderrunFrames(mNormalFrameCount);
+                        }
+                    }
                 }
             }
             // Either threadLoop_mix() or threadLoop_sleepTime() should have set
diff --git a/services/audiopolicy/common/managerdefinitions/include/AudioPort.h b/services/audiopolicy/common/managerdefinitions/include/AudioPort.h
index 2d182bd..d906f11 100644
--- a/services/audiopolicy/common/managerdefinitions/include/AudioPort.h
+++ b/services/audiopolicy/common/managerdefinitions/include/AudioPort.h
@@ -112,6 +112,9 @@
     static bool isBetterFormatMatch(audio_format_t newFormat,
                                         audio_format_t currentFormat,
                                         audio_format_t targetFormat);
+    static uint32_t formatDistance(audio_format_t format1,
+                                   audio_format_t format2);
+    static const uint32_t kFormatDistanceMax = 4;
 
     audio_module_handle_t getModuleHandle() const;
     uint32_t getModuleVersionMajor() const;
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp
index a66c695..c11490a 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp
@@ -282,30 +282,25 @@
     return index1 - index2;
 }
 
+uint32_t AudioPort::formatDistance(audio_format_t format1, audio_format_t format2)
+{
+    if (format1 == format2) {
+        return 0;
+    }
+    if (format1 == AUDIO_FORMAT_INVALID || format2 == AUDIO_FORMAT_INVALID) {
+        return kFormatDistanceMax;
+    }
+    int diffBytes = (int)audio_bytes_per_sample(format1) -
+            audio_bytes_per_sample(format2);
+
+    return abs(diffBytes);
+}
+
 bool AudioPort::isBetterFormatMatch(audio_format_t newFormat,
                                     audio_format_t currentFormat,
                                     audio_format_t targetFormat)
 {
-    if (newFormat == currentFormat) {
-        return false;
-    }
-    if (currentFormat == AUDIO_FORMAT_INVALID) {
-        return true;
-    }
-    if (newFormat == targetFormat) {
-        return true;
-    }
-    int currentDiffBytes = (int)audio_bytes_per_sample(targetFormat) -
-            audio_bytes_per_sample(currentFormat);
-    int newDiffBytes = (int)audio_bytes_per_sample(targetFormat) -
-            audio_bytes_per_sample(newFormat);
-
-    if (abs(newDiffBytes) < abs(currentDiffBytes)) {
-        return true;
-    } else if (abs(newDiffBytes) == abs(currentDiffBytes)) {
-        return (newDiffBytes >= 0);
-    }
-    return false;
+    return formatDistance(newFormat, targetFormat) < formatDistance(currentFormat, targetFormat);
 }
 
 void AudioPort::pickAudioProfile(uint32_t &samplingRate,
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index c0ca440..2dc7cad 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -36,12 +36,12 @@
 #define AUDIO_POLICY_BLUETOOTH_LEGACY_HAL_XML_CONFIG_FILE_NAME \
         "audio_policy_configuration_bluetooth_legacy_hal.xml"
 
+#include <algorithm>
 #include <inttypes.h>
 #include <math.h>
 #include <set>
 #include <unordered_set>
 #include <vector>
-
 #include <AudioPolicyManagerInterface.h>
 #include <AudioPolicyEngineInstance.h>
 #include <cutils/properties.h>
@@ -592,7 +592,7 @@
                     AUDIO_DEVICE_OUT_TELEPHONY_TX, String8(), AUDIO_FORMAT_DEFAULT);
     SortedVector<audio_io_handle_t> outputs =
             getOutputsForDevices(DeviceVector(outputDevice), mOutputs);
-    audio_io_handle_t output = selectOutput(outputs, AUDIO_OUTPUT_FLAG_NONE, AUDIO_FORMAT_INVALID);
+    const audio_io_handle_t output = selectOutput(outputs);
     // request to reuse existing output stream if one is already opened to reach the target device
     if (output != AUDIO_IO_HANDLE_NONE) {
         sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output);
@@ -883,7 +883,7 @@
     // and AudioSystem::getOutputSamplingRate().
 
     SortedVector<audio_io_handle_t> outputs = getOutputsForDevices(devices, mOutputs);
-    audio_io_handle_t output = selectOutput(outputs, AUDIO_OUTPUT_FLAG_NONE, AUDIO_FORMAT_INVALID);
+    const audio_io_handle_t output = selectOutput(outputs);
 
     ALOGV("getOutput() stream %d selected devices %s, output %d", stream,
           devices.toString().c_str(), output);
@@ -1430,108 +1430,125 @@
                                                        audio_channel_mask_t channelMask,
                                                        uint32_t samplingRate)
 {
+    LOG_ALWAYS_FATAL_IF(!(format == AUDIO_FORMAT_INVALID || audio_is_linear_pcm(format)),
+        "%s called with format %#x", __func__, format);
+
+    // Flags disqualifying an output: the match must happen before calling selectOutput()
+    static const audio_output_flags_t kExcludedFlags = (audio_output_flags_t)
+        (AUDIO_OUTPUT_FLAG_HW_AV_SYNC | AUDIO_OUTPUT_FLAG_MMAP_NOIRQ | AUDIO_OUTPUT_FLAG_DIRECT);
+
+    // Flags expressing a functional request: must be honored in priority over
+    // other criteria
+    static const audio_output_flags_t kFunctionalFlags = (audio_output_flags_t)
+        (AUDIO_OUTPUT_FLAG_VOIP_RX | AUDIO_OUTPUT_FLAG_INCALL_MUSIC |
+            AUDIO_OUTPUT_FLAG_TTS | AUDIO_OUTPUT_FLAG_DIRECT_PCM);
+    // Flags expressing a performance request: have lower priority than serving
+    // requested sampling rate or channel mask
+    static const audio_output_flags_t kPerformanceFlags = (audio_output_flags_t)
+        (AUDIO_OUTPUT_FLAG_FAST | AUDIO_OUTPUT_FLAG_DEEP_BUFFER |
+            AUDIO_OUTPUT_FLAG_RAW | AUDIO_OUTPUT_FLAG_SYNC);
+
+    const audio_output_flags_t functionalFlags =
+        (audio_output_flags_t)(flags & kFunctionalFlags);
+    const audio_output_flags_t performanceFlags =
+        (audio_output_flags_t)(flags & kPerformanceFlags);
+
+    audio_io_handle_t bestOutput = (outputs.size() == 0) ? AUDIO_IO_HANDLE_NONE : outputs[0];
+
     // select one output among several that provide a path to a particular device or set of
     // devices (the list was previously build by getOutputsForDevices()).
     // The priority is as follows:
     // 1: the output supporting haptic playback when requesting haptic playback
-    // 2: the output with the highest number of requested policy flags
-    // 3: the output with the bit depth the closest to the requested one
-    // 4: the primary output
-    // 5: the first output in the list
+    // 2: the output with the highest number of requested functional flags
+    // 3: the output supporting the exact channel mask
+    // 4: the output with a higher channel count than requested
+    // 5: the output with a higher sampling rate than requested
+    // 6: the output with the highest number of requested performance flags
+    // 7: the output with the bit depth the closest to the requested one
+    // 8: the primary output
+    // 9: the first output in the list
 
-    if (outputs.size() == 0) {
-        return AUDIO_IO_HANDLE_NONE;
-    }
-    if (outputs.size() == 1) {
-        return outputs[0];
-    }
+    // matching criteria values in priority order for best matching output so far
+    std::vector<uint32_t> bestMatchCriteria(8, 0);
 
-    int maxCommonFlags = 0;
-    const size_t hapticChannelCount = audio_channel_count_from_out_mask(
-            channelMask & AUDIO_CHANNEL_HAPTIC_ALL);
-    audio_io_handle_t outputForFlags = AUDIO_IO_HANDLE_NONE;
-    audio_io_handle_t outputForPrimary = AUDIO_IO_HANDLE_NONE;
-    audio_io_handle_t outputForFormat = AUDIO_IO_HANDLE_NONE;
-    audio_format_t bestFormat = AUDIO_FORMAT_INVALID;
-    audio_format_t bestFormatForFlags = AUDIO_FORMAT_INVALID;
-
-    // Flags which must be present on both the request and the selected output
-    static const audio_output_flags_t kMandatedFlags = (audio_output_flags_t)
-        (AUDIO_OUTPUT_FLAG_HW_AV_SYNC | AUDIO_OUTPUT_FLAG_MMAP_NOIRQ);
+    const uint32_t channelCount = audio_channel_count_from_out_mask(channelMask);
+    const uint32_t hapticChannelCount = audio_channel_count_from_out_mask(
+        channelMask & AUDIO_CHANNEL_HAPTIC_ALL);
 
     for (audio_io_handle_t output : outputs) {
         sp<SwAudioOutputDescriptor> outputDesc = mOutputs.valueFor(output);
-        if (!outputDesc->isDuplicated()) {
-            if (outputDesc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) {
-                continue;
-            }
-            // If haptic channel is specified, use the haptic output if present.
-            // When using haptic output, same audio format and sample rate are required.
-            if (hapticChannelCount > 0) {
-                // If haptic channel is specified, use the first output that
-                // support haptic playback.
-                if (audio_channel_count_from_out_mask(
-                        outputDesc->mChannelMask & AUDIO_CHANNEL_HAPTIC_ALL) >= hapticChannelCount
-                        && format == outputDesc->mFormat
-                        && samplingRate == outputDesc->mSamplingRate) {
-                    return output;
-                }
-            } else {
-                // When haptic channel is not specified, skip haptic output.
-                if (outputDesc->mChannelMask & AUDIO_CHANNEL_HAPTIC_ALL) {
-                    continue;
-                }
-            }
-            if ((kMandatedFlags & flags) !=
-                (kMandatedFlags & outputDesc->mProfile->getFlags())) {
-                continue;
-            }
+        // matching criteria values in priority order for current output
+        std::vector<uint32_t> currentMatchCriteria(8, 0);
 
-            // if a valid format is specified, skip output if not compatible
-            if (format != AUDIO_FORMAT_INVALID) {
-                if (!audio_is_linear_pcm(format)) {
-                    continue;
-                }
-                if (AudioPort::isBetterFormatMatch(
-                        outputDesc->mFormat, bestFormat, format)) {
-                    outputForFormat = output;
-                    bestFormat = outputDesc->mFormat;
-                }
-            }
+        if (outputDesc->isDuplicated()) {
+            continue;
+        }
+        if ((kExcludedFlags & outputDesc->mFlags) != 0) {
+            continue;
+        }
 
-            int commonFlags = popcount(outputDesc->mProfile->getFlags() & flags);
-            if (commonFlags >= maxCommonFlags) {
-                if (commonFlags == maxCommonFlags) {
-                    if (format != AUDIO_FORMAT_INVALID
-                            && AudioPort::isBetterFormatMatch(
-                                    outputDesc->mFormat, bestFormatForFlags, format)) {
-                        outputForFlags = output;
-                        bestFormatForFlags = outputDesc->mFormat;
-                    }
-                } else {
-                    outputForFlags = output;
-                    maxCommonFlags = commonFlags;
-                    bestFormatForFlags = outputDesc->mFormat;
-                }
-                ALOGV("selectOutput() commonFlags for output %d, %04x", output, commonFlags);
+        // If haptic channel is specified, use the haptic output if present.
+        // When using haptic output, same audio format and sample rate are required.
+        const uint32_t outputHapticChannelCount = audio_channel_count_from_out_mask(
+            outputDesc->mChannelMask & AUDIO_CHANNEL_HAPTIC_ALL);
+        if ((hapticChannelCount == 0) != (outputHapticChannelCount == 0)) {
+            continue;
+        }
+        if (outputHapticChannelCount >= hapticChannelCount
+            && format == outputDesc->mFormat
+            && samplingRate == outputDesc->mSamplingRate) {
+                currentMatchCriteria[0] = outputHapticChannelCount;
+        }
+
+        // functional flags match
+        currentMatchCriteria[1] = popcount(outputDesc->mFlags & functionalFlags);
+
+        // channel mask and channel count match
+        uint32_t outputChannelCount = audio_channel_count_from_out_mask(outputDesc->mChannelMask);
+        if (channelMask != AUDIO_CHANNEL_NONE && channelCount > 2 &&
+            channelCount <= outputChannelCount) {
+            if ((audio_channel_mask_get_representation(channelMask) ==
+                    audio_channel_mask_get_representation(outputDesc->mChannelMask)) &&
+                    ((channelMask & outputDesc->mChannelMask) == channelMask)) {
+                currentMatchCriteria[2] = outputChannelCount;
             }
-            if (outputDesc->mProfile->getFlags() & AUDIO_OUTPUT_FLAG_PRIMARY) {
-                outputForPrimary = output;
-            }
+            currentMatchCriteria[3] = outputChannelCount;
+        }
+
+        // sampling rate match
+        if (samplingRate > SAMPLE_RATE_HZ_DEFAULT &&
+                samplingRate <= outputDesc->mSamplingRate) {
+            currentMatchCriteria[4] = outputDesc->mSamplingRate;
+        }
+
+        // performance flags match
+        currentMatchCriteria[5] = popcount(outputDesc->mFlags & performanceFlags);
+
+        // format match
+        if (format != AUDIO_FORMAT_INVALID) {
+            currentMatchCriteria[6] =
+                AudioPort::kFormatDistanceMax -
+                AudioPort::formatDistance(format, outputDesc->mFormat);
+        }
+
+        // primary output match
+        currentMatchCriteria[7] = outputDesc->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY;
+
+        // compare match criteria by priority then value
+        if (std::lexicographical_compare(bestMatchCriteria.begin(), bestMatchCriteria.end(),
+                currentMatchCriteria.begin(), currentMatchCriteria.end())) {
+            bestMatchCriteria = currentMatchCriteria;
+            bestOutput = output;
+
+            std::stringstream result;
+            std::copy(bestMatchCriteria.begin(), bestMatchCriteria.end(),
+                std::ostream_iterator<int>(result, " "));
+            ALOGV("%s new bestOutput %d criteria %s",
+                __func__, bestOutput, result.str().c_str());
         }
     }
 
-    if (outputForFlags != AUDIO_IO_HANDLE_NONE) {
-        return outputForFlags;
-    }
-    if (outputForFormat != AUDIO_IO_HANDLE_NONE) {
-        return outputForFormat;
-    }
-    if (outputForPrimary != AUDIO_IO_HANDLE_NONE) {
-        return outputForPrimary;
-    }
-
-    return outputs[0];
+    return bestOutput;
 }
 
 status_t AudioPolicyManager::startOutput(audio_port_handle_t portId)
@@ -3003,22 +3020,11 @@
 
 status_t AudioPolicyManager::removeUidDeviceAffinities(uid_t uid) {
     ALOGV("%s() uid=%d", __FUNCTION__, uid);
-    Vector<AudioDeviceTypeAddr> devices;
-    status_t res =  mPolicyMixes.getDevicesForUid(uid, devices);
-    if (res == NO_ERROR) {
-        // reevaluate outputs for all found devices
-        for (size_t i = 0; i < devices.size(); i++) {
-            sp<DeviceDescriptor> devDesc = mHwModules.getDeviceDescriptor(
-                    devices[i].mType, devices[i].mAddress, String8(),
-                    AUDIO_FORMAT_DEFAULT);
-            SortedVector<audio_io_handle_t> outputs;
-            if (checkOutputsForDevice(devDesc, AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE,
-                    outputs) != NO_ERROR) {
-                ALOGE("%s() error in checkOutputsForDevice for device=%08x addr=%s",
-                        __FUNCTION__, devices[i].mType, devices[i].mAddress.string());
-                return INVALID_OPERATION;
-            }
-        }
+    status_t res = mPolicyMixes.removeUidDeviceAffinities(uid);
+    if (res != NO_ERROR) {
+        ALOGE("%s() Could not remove all device affinities fo uid = %d",
+            __FUNCTION__, uid);
+        return INVALID_OPERATION;
     }
 
     return res;
@@ -3485,7 +3491,7 @@
                             getOutputsForDevices(DeviceVector(sinkDevice), mOutputs);
                     // if the sink device is reachable via an opened output stream, request to go via
                     // this output stream by adding a second source to the patch description
-                    audio_io_handle_t output = selectOutput(outputs);
+                    const audio_io_handle_t output = selectOutput(outputs);
                     if (output != AUDIO_IO_HANDLE_NONE) {
                         sp<AudioOutputDescriptor> outputDesc = mOutputs.valueFor(output);
                         if (outputDesc->isDuplicated()) {
diff --git a/services/camera/libcameraservice/device3/Camera3Device.cpp b/services/camera/libcameraservice/device3/Camera3Device.cpp
index 415b2d8..f4abba4 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Device.cpp
@@ -2522,6 +2522,9 @@
         CLOGE("Stream %d is unknown", streamId);
         return BAD_VALUE;
     }
+
+    // isConsumerConfigurationDeferred will be off after setConsumers
+    bool isDeferred = stream->isConsumerConfigurationDeferred();
     status_t res = stream->setConsumers(consumers);
     if (res != OK) {
         CLOGE("Stream %d set consumer failed (error %d %s) ", streamId, res, strerror(-res));
@@ -2537,7 +2540,7 @@
         surfaceIds->push_back(id);
     }
 
-    if (stream->isConsumerConfigurationDeferred()) {
+    if (isDeferred) {
         if (!stream->isConfiguring()) {
             CLOGE("Stream %d was already fully configured.", streamId);
             return INVALID_OPERATION;
@@ -2612,7 +2615,6 @@
 sp<Camera3Device::CaptureRequest> Camera3Device::createCaptureRequest(
         const PhysicalCameraSettingsList &request, const SurfaceMap &surfaceMap) {
     ATRACE_CALL();
-    status_t res;
 
     sp<CaptureRequest> newRequest = new CaptureRequest;
     newRequest->mSettingsList = request;
@@ -2626,16 +2628,11 @@
                     inputStreams.data.u8[0]);
             return NULL;
         }
-        // Lazy completion of stream configuration (allocation/registration)
-        // on first use
+
         if (mInputStream->isConfiguring()) {
-            res = mInputStream->finishConfiguration();
-            if (res != OK) {
-                SET_ERR_L("Unable to finish configuring input stream %d:"
-                        " %s (%d)",
-                        mInputStream->getId(), strerror(-res), res);
-                return NULL;
-            }
+            SET_ERR_L("%s: input stream %d is not configured!",
+                    __FUNCTION__, mInputStream->getId());
+            return NULL;
         }
         // Check if stream prepare is blocking requests.
         if (mInputStream->isBlockedByPrepare()) {
@@ -2675,15 +2672,9 @@
             newRequest->mOutputSurfaces[streams.data.i32[i]] = surfaces;
         }
 
-        // Lazy completion of stream configuration (allocation/registration)
-        // on first use
         if (stream->isConfiguring()) {
-            res = stream->finishConfiguration();
-            if (res != OK) {
-                SET_ERR_L("Unable to finish configuring stream %d: %s (%d)",
-                        stream->getId(), strerror(-res), res);
-                return NULL;
-            }
+            SET_ERR_L("%s: stream %d is not configured!", __FUNCTION__, stream->getId());
+            return NULL;
         }
         // Check if stream prepare is blocking requests.
         if (stream->isBlockedByPrepare()) {
@@ -2908,7 +2899,8 @@
     // faster
 
     if (mInputStream != NULL && mInputStream->isConfiguring()) {
-        res = mInputStream->finishConfiguration();
+        bool streamReConfigured = false;
+        res = mInputStream->finishConfiguration(&streamReConfigured);
         if (res != OK) {
             CLOGE("Can't finish configuring input stream %d: %s (%d)",
                     mInputStream->getId(), strerror(-res), res);
@@ -2918,12 +2910,16 @@
             }
             return BAD_VALUE;
         }
+        if (streamReConfigured) {
+            mInterface->onStreamReConfigured(mInputStream->getId());
+        }
     }
 
     for (size_t i = 0; i < mOutputStreams.size(); i++) {
         sp<Camera3OutputStreamInterface> outputStream = mOutputStreams[i];
         if (outputStream->isConfiguring() && !outputStream->isConsumerConfigurationDeferred()) {
-            res = outputStream->finishConfiguration();
+            bool streamReConfigured = false;
+            res = outputStream->finishConfiguration(&streamReConfigured);
             if (res != OK) {
                 CLOGE("Can't finish configuring output stream %d: %s (%d)",
                         outputStream->getId(), strerror(-res), res);
@@ -2933,6 +2929,9 @@
                 }
                 return BAD_VALUE;
             }
+            if (streamReConfigured) {
+                mInterface->onStreamReConfigured(outputStream->getId());
+            }
         }
     }
 
@@ -4780,7 +4779,7 @@
                 __FUNCTION__, handle, streamId);
         return;
     } else {
-        bufferId =  it->second;
+        bufferId = it->second;
         bIdMap.erase(it);
         ALOGV("%s: stream %d now have %zu buffer caches after removing buf %p",
                 __FUNCTION__, streamId, bIdMap.size(), handle);
@@ -4788,6 +4787,22 @@
     mFreedBuffers.push_back(std::make_pair(streamId, bufferId));
 }
 
+void Camera3Device::HalInterface::onStreamReConfigured(int streamId) {
+    std::lock_guard<std::mutex> lock(mBufferIdMapLock);
+    auto mapIt = mBufferIdMaps.find(streamId);
+    if (mapIt == mBufferIdMaps.end()) {
+        ALOGE("%s: streamId %d not found!", __FUNCTION__, streamId);
+        return;
+    }
+
+    BufferIdMap& bIdMap = mapIt->second;
+    for (const auto& it : bIdMap) {
+        uint64_t bufferId = it.second;
+        mFreedBuffers.push_back(std::make_pair(streamId, bufferId));
+    }
+    bIdMap.clear();
+}
+
 /**
  * RequestThread inner class methods
  */
diff --git a/services/camera/libcameraservice/device3/Camera3Device.h b/services/camera/libcameraservice/device3/Camera3Device.h
index f8245df..23df3c7 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.h
+++ b/services/camera/libcameraservice/device3/Camera3Device.h
@@ -336,6 +336,8 @@
         // Get a vector of bufferId of currently inflight buffers
         void getInflightRequestBufferKeys(std::vector<uint64_t>* out);
 
+        void onStreamReConfigured(int streamId);
+
         static const uint64_t BUFFER_ID_NO_BUFFER = 0;
       private:
         // Always valid
diff --git a/services/camera/libcameraservice/device3/Camera3Stream.cpp b/services/camera/libcameraservice/device3/Camera3Stream.cpp
index 12ff130..d73a2f9 100644
--- a/services/camera/libcameraservice/device3/Camera3Stream.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Stream.cpp
@@ -287,8 +287,11 @@
     return (mState == STATE_IN_CONFIG) || (mState == STATE_IN_RECONFIG);
 }
 
-status_t Camera3Stream::finishConfiguration() {
+status_t Camera3Stream::finishConfiguration(/*out*/bool* streamReconfigured) {
     ATRACE_CALL();
+    if (streamReconfigured != nullptr) {
+        *streamReconfigured = false;
+    }
     Mutex::Autolock l(mLock);
     switch (mState) {
         case STATE_ERROR:
@@ -313,7 +316,7 @@
 
     // Register for idle tracking
     sp<StatusTracker> statusTracker = mStatusTracker.promote();
-    if (statusTracker != 0) {
+    if (statusTracker != 0 && mStatusId == StatusTracker::NO_STATUS_ID) {
         mStatusId = statusTracker->addComponent();
     }
 
@@ -332,6 +335,7 @@
     mPrepareBlockRequest = true;
     mStreamUnpreparable = false;
 
+    bool reconfiguring = (mState == STATE_IN_RECONFIG);
     status_t res;
     res = configureQueueLocked();
     // configureQueueLocked could return error in case of abandoned surface.
@@ -348,6 +352,9 @@
         return res;
     }
 
+    if (reconfiguring && streamReconfigured != nullptr) {
+        *streamReconfigured = true;
+    }
     mState = STATE_CONFIGURED;
 
     return res;
diff --git a/services/camera/libcameraservice/device3/Camera3Stream.h b/services/camera/libcameraservice/device3/Camera3Stream.h
index 3d21029..c916fe8 100644
--- a/services/camera/libcameraservice/device3/Camera3Stream.h
+++ b/services/camera/libcameraservice/device3/Camera3Stream.h
@@ -197,6 +197,8 @@
      * after this call, but can still be read until the destruction of the
      * stream.
      *
+     * streamReconfigured: set to true when a stream is being reconfigured.
+     *
      * Returns:
      *   OK on a successful configuration
      *   NO_INIT in case of a serious error from the HAL device
@@ -204,7 +206,7 @@
      *   INVALID_OPERATION in case connecting to the consumer failed or consumer
      *       doesn't exist yet.
      */
-    status_t         finishConfiguration();
+    status_t         finishConfiguration(/*out*/bool* streamReconfigured = nullptr);
 
     /**
      * Cancels the stream configuration process. This returns the stream to the
diff --git a/services/camera/libcameraservice/device3/Camera3StreamInterface.h b/services/camera/libcameraservice/device3/Camera3StreamInterface.h
index 5cd11b7..73f501a 100644
--- a/services/camera/libcameraservice/device3/Camera3StreamInterface.h
+++ b/services/camera/libcameraservice/device3/Camera3StreamInterface.h
@@ -130,13 +130,15 @@
      * modified after this call, but can still be read until the destruction of
      * the stream.
      *
+     * streamReconfigured: set to true when a stream is being reconfigured.
+     *
      * Returns:
      *   OK on a successful configuration
      *   NO_INIT in case of a serious error from the HAL device
      *   NO_MEMORY in case of an error registering buffers
      *   INVALID_OPERATION in case connecting to the consumer failed
      */
-    virtual status_t finishConfiguration() = 0;
+    virtual status_t finishConfiguration(/*out*/bool* streamReconfigured = nullptr) = 0;
 
     /**
      * Cancels the stream configuration process. This returns the stream to the
diff --git a/services/mediacodec/main_codecservice.cpp b/services/mediacodec/main_codecservice.cpp
index 6ffbd26..f668c33 100644
--- a/services/mediacodec/main_codecservice.cpp
+++ b/services/mediacodec/main_codecservice.cpp
@@ -49,12 +49,6 @@
 
     // Default codec services
     using namespace ::android::hardware::media::omx::V1_0;
-    sp<IOmxStore> omxStore = new implementation::OmxStore();
-    if (omxStore == nullptr) {
-        LOG(ERROR) << "Cannot create IOmxStore HAL service.";
-    } else if (omxStore->registerAsService() != OK) {
-        LOG(ERROR) << "Cannot register IOmxStore HAL service.";
-    }
     sp<IOmx> omx = new implementation::Omx();
     if (omx == nullptr) {
         LOG(ERROR) << "Cannot create IOmx HAL service.";
@@ -63,6 +57,12 @@
     } else {
         LOG(INFO) << "IOmx HAL service created.";
     }
+    sp<IOmxStore> omxStore = new implementation::OmxStore(omx);
+    if (omxStore == nullptr) {
+        LOG(ERROR) << "Cannot create IOmxStore HAL service.";
+    } else if (omxStore->registerAsService() != OK) {
+        LOG(ERROR) << "Cannot register IOmxStore HAL service.";
+    }
 
     ::android::hardware::joinRpcThreadpool();
 }
diff --git a/services/mediaextractor/Android.bp b/services/mediaextractor/Android.bp
new file mode 100644
index 0000000..b812244
--- /dev/null
+++ b/services/mediaextractor/Android.bp
@@ -0,0 +1,71 @@
+// service library
+cc_library_shared {
+    name: "libmediaextractorservice",
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+    srcs: ["MediaExtractorService.cpp"],
+
+    shared_libs: [
+        "libmedia",
+        "libstagefright",
+        "libbinder",
+        "libutils",
+    ],
+}
+
+// service executable
+cc_binary {
+    name: "mediaextractor",
+
+    srcs: ["main_extractorservice.cpp"],
+    shared_libs: [
+        "libmedia",
+        "libmediaextractorservice",
+        "libbinder",
+        "libutils",
+        "liblog",
+        "libavservices_minijail",
+    ],
+    target: {
+        android: {
+            product_variables: {
+                malloc_not_svelte: {
+                    // Scudo increases memory footprint, so only enable on
+                    // non-svelte devices.
+                    shared_libs: ["libc_scudo"],
+                },
+            },
+        },
+    },
+    init_rc: ["mediaextractor.rc"],
+
+    include_dirs: ["frameworks/av/media/libmedia"],
+
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+}
+
+prebuilt_etc {
+    name: "mediaextractor.policy",
+    sub_dir: "seccomp_policy",
+    arch: {
+        arm: {
+            src: "seccomp_policy/mediaextractor-arm.policy",
+        },
+        arm64: {
+            src: "seccomp_policy/mediaextractor-arm64.policy",
+        },
+        x86: {
+            src: "seccomp_policy/mediaextractor-x86.policy",
+        },
+        x86_64: {
+            src: "seccomp_policy/mediaextractor-x86_64.policy",
+        },
+    },
+    required: ["crash_dump.policy"],
+}
+
diff --git a/services/mediaextractor/Android.mk b/services/mediaextractor/Android.mk
deleted file mode 100644
index 9db6ed1..0000000
--- a/services/mediaextractor/Android.mk
+++ /dev/null
@@ -1,43 +0,0 @@
-LOCAL_PATH := $(call my-dir)
-
-# service library
-include $(CLEAR_VARS)
-LOCAL_CFLAGS := -Wall -Werror
-LOCAL_SRC_FILES := \
-    MediaExtractorService.cpp
-
-LOCAL_SHARED_LIBRARIES := libmedia libstagefright libbinder libutils
-LOCAL_MODULE:= libmediaextractorservice
-include $(BUILD_SHARED_LIBRARY)
-
-
-# service executable
-include $(CLEAR_VARS)
-# seccomp filters are defined for the following architectures:
-LOCAL_REQUIRED_MODULES_arm := crash_dump.policy mediaextractor.policy
-LOCAL_REQUIRED_MODULES_arm64 := crash_dump.policy mediaextractor.policy
-LOCAL_REQUIRED_MODULES_x86 := crash_dump.policy mediaextractor.policy
-LOCAL_REQUIRED_MODULES_x86_64 := crash_dump.policy mediaextractor.policy
-
-LOCAL_SRC_FILES := main_extractorservice.cpp
-ifneq (true, $(filter true, $(MALLOC_SVELTE)))
-# Scudo increases memory footprint, so only use on non-svelte configs.
-LOCAL_SHARED_LIBRARIES := libc_scudo
-endif
-LOCAL_SHARED_LIBRARIES += libmedia libmediaextractorservice libbinder libutils \
-    liblog libandroidicu libavservices_minijail
-LOCAL_MODULE:= mediaextractor
-LOCAL_INIT_RC := mediaextractor.rc
-LOCAL_C_INCLUDES := frameworks/av/media/libmedia
-LOCAL_CFLAGS := -Wall -Werror
-include $(BUILD_EXECUTABLE)
-
-# service seccomp filter
-ifeq ($(TARGET_ARCH), $(filter $(TARGET_ARCH), arm arm64 x86 x86_64))
-include $(CLEAR_VARS)
-LOCAL_MODULE := mediaextractor.policy
-LOCAL_MODULE_CLASS := ETC
-LOCAL_MODULE_PATH := $(TARGET_OUT)/etc/seccomp_policy
-LOCAL_SRC_FILES := seccomp_policy/mediaextractor-$(TARGET_ARCH).policy
-include $(BUILD_PREBUILT)
-endif
diff --git a/services/mediaextractor/main_extractorservice.cpp b/services/mediaextractor/main_extractorservice.cpp
index bb9a56b..3c4125b 100644
--- a/services/mediaextractor/main_extractorservice.cpp
+++ b/services/mediaextractor/main_extractorservice.cpp
@@ -15,7 +15,6 @@
 ** limitations under the License.
 */
 
-#include <aicu/AIcu.h>
 #include <fcntl.h>
 #include <sys/prctl.h>
 #include <sys/wait.h>
@@ -37,7 +36,7 @@
 using namespace android;
 
 static const char kSystemSeccompPolicyPath[] =
-        "/system/etc/seccomp_policy/mediaextractor.policy";
+        "/apex/com.android.media/etc/seccomp_policy/mediaextractor.policy";
 static const char kVendorSeccompPolicyPath[] =
         "/vendor/etc/seccomp_policy/mediaextractor.policy";
 
@@ -58,8 +57,6 @@
 
     SetUpMinijail(kSystemSeccompPolicyPath, kVendorSeccompPolicyPath);
 
-    AIcu_initializeIcuOrDie();
-
     strcpy(argv[0], "media.extractor");
     sp<ProcessState> proc(ProcessState::self());
     sp<IServiceManager> sm = defaultServiceManager();