Merge changes I373db2f4,I3f0cc1dd,I05f8ed86,Iec0cc3d2,I01cfcaf1, ...

* changes:
  codec2: signal aliases in XML vs. C2Store
  codec2: Codec2InfoBuilder rework
  stagefright: list only the first codec for a given name
  stagefright: find codecs by their aliases as well
  stagefright: MediaCodecsXmlParser: add support for parsing rank
  stagefright: add method to MediaCodecInfoWriter to find existing info
  stagefright: rework and simplify OmxInfoBuilder
  codec2: CCodec plugin CreateInputSurface should create C2 HAL surface
  codec2: C2PlatformStore: signal component traits via interface
  codec2: make C2Component::Traits.aliases a vector of C2Strings
diff --git a/media/codec2/hidl/1.0/utils/include/codec2/hidl/1.0/types.h b/media/codec2/hidl/1.0/utils/include/codec2/hidl/1.0/types.h
index c38e674..b9f3aa8 100644
--- a/media/codec2/hidl/1.0/utils/include/codec2/hidl/1.0/types.h
+++ b/media/codec2/hidl/1.0/utils/include/codec2/hidl/1.0/types.h
@@ -120,11 +120,9 @@
         IComponentStore::ComponentTraits* d,
         const C2Component::Traits& s);
 
-// ComponentTraits -> C2Component::Traits, std::unique_ptr<std::vector<std::string>>
-// Note: The output d is only valid as long as aliasesBuffer remains alive.
+// ComponentTraits -> C2Component::Traits
 bool objcpy(
         C2Component::Traits* d,
-        std::unique_ptr<std::vector<std::string>>* aliasesBuffer,
         const IComponentStore::ComponentTraits& s);
 
 // C2StructDescriptor -> StructDescriptor
diff --git a/media/codec2/hidl/1.0/utils/types.cpp b/media/codec2/hidl/1.0/utils/types.cpp
index caed839..02cdc23 100644
--- a/media/codec2/hidl/1.0/utils/types.cpp
+++ b/media/codec2/hidl/1.0/utils/types.cpp
@@ -351,7 +351,6 @@
 // ComponentTraits -> C2Component::Traits, std::unique_ptr<std::vector<std::string>>
 bool objcpy(
         C2Component::Traits* d,
-        std::unique_ptr<std::vector<std::string>>* aliasesBuffer,
         const IComponentStore::ComponentTraits& s) {
     d->name = s.name.c_str();
 
@@ -394,15 +393,9 @@
 
     d->rank = static_cast<C2Component::rank_t>(s.rank);
     d->mediaType = s.mediaType.c_str();
-
-    // aliasesBuffer must not be resized after this.
-    *aliasesBuffer = std::make_unique<std::vector<std::string>>(
-            s.aliases.size());
-    (*aliasesBuffer)->resize(s.aliases.size());
-    std::vector<C2StringLiteral> dAliases(s.aliases.size());
+    d->aliases.resize(s.aliases.size());
     for (size_t i = 0; i < s.aliases.size(); ++i) {
-        (**aliasesBuffer)[i] = s.aliases[i].c_str();
-        d->aliases[i] = (**aliasesBuffer)[i].c_str();
+        d->aliases[i] = s.aliases[i];
     }
     return true;
 }
diff --git a/media/codec2/hidl/client/client.cpp b/media/codec2/hidl/client/client.cpp
index e02c2ca..3808be5 100644
--- a/media/codec2/hidl/client/client.cpp
+++ b/media/codec2/hidl/client/client.cpp
@@ -564,9 +564,8 @@
                     return;
                 }
                 mTraitsList.resize(t.size());
-                mAliasesBuffer.resize(t.size());
                 for (size_t i = 0; i < t.size(); ++i) {
-                    if (!objcpy(&mTraitsList[i], &mAliasesBuffer[i], t[i])) {
+                    if (!objcpy(&mTraitsList[i], t[i])) {
                         LOG(ERROR) << "listComponents -- corrupted output.";
                         return;
                     }
diff --git a/media/codec2/hidl/client/include/codec2/hidl/client.h b/media/codec2/hidl/client/include/codec2/hidl/client.h
index 5b3afca..478ce6e 100644
--- a/media/codec2/hidl/client/include/codec2/hidl/client.h
+++ b/media/codec2/hidl/client/include/codec2/hidl/client.h
@@ -232,8 +232,6 @@
     mutable bool mListed;
     std::string mServiceName;
     mutable std::vector<C2Component::Traits> mTraitsList;
-    mutable std::vector<std::unique_ptr<std::vector<std::string>>>
-            mAliasesBuffer;
 
     sp<::android::hardware::media::bufferpool::V2_0::IClientManager>
             mHostPoolManager;
diff --git a/media/codec2/sfplugin/CCodec.cpp b/media/codec2/sfplugin/CCodec.cpp
index ed1f85b..bc22045 100644
--- a/media/codec2/sfplugin/CCodec.cpp
+++ b/media/codec2/sfplugin/CCodec.cpp
@@ -937,6 +937,47 @@
     (new AMessage(kWhatCreateInputSurface, this))->post();
 }
 
+sp<PersistentSurface> CCodec::CreateOmxInputSurface() {
+    using namespace android::hardware::media::omx::V1_0;
+    using namespace android::hardware::media::omx::V1_0::utils;
+    using namespace android::hardware::graphics::bufferqueue::V1_0::utils;
+    typedef android::hardware::media::omx::V1_0::Status OmxStatus;
+    android::sp<IOmx> omx = IOmx::getService();
+    typedef android::hardware::graphics::bufferqueue::V1_0::
+            IGraphicBufferProducer HGraphicBufferProducer;
+    typedef android::hardware::media::omx::V1_0::
+            IGraphicBufferSource HGraphicBufferSource;
+    OmxStatus s;
+    android::sp<HGraphicBufferProducer> gbp;
+    android::sp<HGraphicBufferSource> gbs;
+    android::Return<void> transStatus = omx->createInputSurface(
+            [&s, &gbp, &gbs](
+                    OmxStatus status,
+                    const android::sp<HGraphicBufferProducer>& producer,
+                    const android::sp<HGraphicBufferSource>& source) {
+                s = status;
+                gbp = producer;
+                gbs = source;
+            });
+    if (transStatus.isOk() && s == OmxStatus::OK) {
+        return new PersistentSurface(
+                new H2BGraphicBufferProducer(gbp),
+                sp<::android::IGraphicBufferSource>(new LWGraphicBufferSource(gbs)));
+    }
+
+    return nullptr;
+}
+
+sp<PersistentSurface> CCodec::CreateCompatibleInputSurface() {
+    sp<PersistentSurface> surface(CreateInputSurface());
+
+    if (surface == nullptr) {
+        surface = CreateOmxInputSurface();
+    }
+
+    return surface;
+}
+
 void CCodec::createInputSurface() {
     status_t err;
     sp<IGraphicBufferProducer> bufferProducer;
@@ -949,7 +990,7 @@
         outputFormat = config->mOutputFormat;
     }
 
-    std::shared_ptr<PersistentSurface> persistentSurface(CreateInputSurface());
+    sp<PersistentSurface> persistentSurface = CreateCompatibleInputSurface();
 
     if (persistentSurface->getHidlTarget()) {
         sp<IInputSurface> hidlInputSurface = IInputSurface::castFrom(
@@ -1669,46 +1710,17 @@
     return new android::CCodec;
 }
 
+// Create Codec 2.0 input surface
 extern "C" android::PersistentSurface *CreateInputSurface() {
     // Attempt to create a Codec2's input surface.
     std::shared_ptr<android::Codec2Client::InputSurface> inputSurface =
             android::Codec2Client::CreateInputSurface();
-    if (inputSurface) {
-        return new android::PersistentSurface(
-                inputSurface->getGraphicBufferProducer(),
-                static_cast<android::sp<android::hidl::base::V1_0::IBase>>(
-                inputSurface->getHalInterface()));
+    if (!inputSurface) {
+        return nullptr;
     }
-
-    // Fall back to OMX.
-    using namespace android::hardware::media::omx::V1_0;
-    using namespace android::hardware::media::omx::V1_0::utils;
-    using namespace android::hardware::graphics::bufferqueue::V1_0::utils;
-    typedef android::hardware::media::omx::V1_0::Status OmxStatus;
-    android::sp<IOmx> omx = IOmx::getService();
-    typedef android::hardware::graphics::bufferqueue::V1_0::
-            IGraphicBufferProducer HGraphicBufferProducer;
-    typedef android::hardware::media::omx::V1_0::
-            IGraphicBufferSource HGraphicBufferSource;
-    OmxStatus s;
-    android::sp<HGraphicBufferProducer> gbp;
-    android::sp<HGraphicBufferSource> gbs;
-    android::Return<void> transStatus = omx->createInputSurface(
-            [&s, &gbp, &gbs](
-                    OmxStatus status,
-                    const android::sp<HGraphicBufferProducer>& producer,
-                    const android::sp<HGraphicBufferSource>& source) {
-                s = status;
-                gbp = producer;
-                gbs = source;
-            });
-    if (transStatus.isOk() && s == OmxStatus::OK) {
-        return new android::PersistentSurface(
-                new H2BGraphicBufferProducer(gbp),
-                sp<::android::IGraphicBufferSource>(
-                    new LWGraphicBufferSource(gbs)));
-    }
-
-    return nullptr;
+    return new android::PersistentSurface(
+            inputSurface->getGraphicBufferProducer(),
+            static_cast<android::sp<android::hidl::base::V1_0::IBase>>(
+            inputSurface->getHalInterface()));
 }
 
diff --git a/media/codec2/sfplugin/CCodec.h b/media/codec2/sfplugin/CCodec.h
index bb8bd19..ba5f5f3 100644
--- a/media/codec2/sfplugin/CCodec.h
+++ b/media/codec2/sfplugin/CCodec.h
@@ -89,6 +89,16 @@
     void flush();
     void release(bool sendCallback);
 
+    /**
+     * Creates an input surface for the current device configuration compatible with CCodec.
+     * This could be backed by the C2 HAL or the OMX HAL.
+     */
+    static sp<PersistentSurface> CreateCompatibleInputSurface();
+
+    /// Creates an input surface to the OMX HAL
+    static sp<PersistentSurface> CreateOmxInputSurface();
+
+    /// handle a create input surface call
     void createInputSurface();
     void setInputSurface(const sp<PersistentSurface> &surface);
     status_t setupInputSurface(const std::shared_ptr<InputSurfaceWrapper> &surface);
diff --git a/media/codec2/sfplugin/Codec2InfoBuilder.cpp b/media/codec2/sfplugin/Codec2InfoBuilder.cpp
index 5f0dd0b..ead0a9b 100644
--- a/media/codec2/sfplugin/Codec2InfoBuilder.cpp
+++ b/media/codec2/sfplugin/Codec2InfoBuilder.cpp
@@ -68,262 +68,146 @@
             s.compare(s.size() - suffixLen, suffixLen, suffix) == 0;
 }
 
-// Constants from ACodec
-constexpr OMX_U32 kPortIndexInput = 0;
-constexpr OMX_U32 kPortIndexOutput = 1;
-constexpr OMX_U32 kMaxIndicesToCheck = 32;
+void addSupportedProfileLevels(
+        std::shared_ptr<Codec2Client::Interface> intf,
+        MediaCodecInfo::CapabilitiesWriter *caps,
+        const Traits& trait, const std::string &mediaType) {
+    std::shared_ptr<C2Mapper::ProfileLevelMapper> mapper =
+        C2Mapper::GetProfileLevelMapper(trait.mediaType);
+    // if we don't know the media type, pass through all values unmapped
 
-status_t queryOmxCapabilities(
-        const char* name, const char* mediaType, bool isEncoder,
-        MediaCodecInfo::CapabilitiesWriter* caps) {
-
-    const char *role = GetComponentRole(isEncoder, mediaType);
-    if (role == nullptr) {
-        return BAD_VALUE;
-    }
-
-    using namespace ::android::hardware::media::omx::V1_0;
-    using ::android::hardware::Return;
-    using ::android::hardware::Void;
-    using ::android::hardware::hidl_vec;
-    using ::android::hardware::media::omx::V1_0::utils::LWOmxNode;
-
-    sp<IOmx> omx = IOmx::getService();
-    if (!omx) {
-        ALOGW("Could not obtain IOmx service.");
-        return NO_INIT;
-    }
-
-    struct Observer : IOmxObserver {
-        virtual Return<void> onMessages(const hidl_vec<Message>&) override {
-            return Void();
-        }
+    // TODO: we cannot find levels that are local 'maxima' without knowing the coding
+    // e.g. H.263 level 45 and level 30 could be two values for highest level as
+    // they don't include one another. For now we use the last supported value.
+    bool encoder = trait.kind == C2Component::KIND_ENCODER;
+    C2StreamProfileLevelInfo pl(encoder /* output */, 0u);
+    std::vector<C2FieldSupportedValuesQuery> profileQuery = {
+        C2FieldSupportedValuesQuery::Possible(C2ParamField(&pl, &pl.profile))
     };
 
-    sp<Observer> observer = new Observer();
-    Status status;
-    sp<IOmxNode> tOmxNode;
-    Return<void> transStatus = omx->allocateNode(
-            name, observer,
-            [&status, &tOmxNode](Status s, const sp<IOmxNode>& n) {
-                status = s;
-                tOmxNode = n;
-            });
-    if (!transStatus.isOk()) {
-        ALOGW("IOmx::allocateNode -- transaction failed.");
-        return NO_INIT;
-    }
-    if (status != Status::OK) {
-        ALOGW("IOmx::allocateNode -- error returned: %d.",
-                static_cast<int>(status));
-        return NO_INIT;
+    c2_status_t err = intf->querySupportedValues(profileQuery, C2_DONT_BLOCK);
+    ALOGV("query supported profiles -> %s | %s", asString(err), asString(profileQuery[0].status));
+    if (err != C2_OK || profileQuery[0].status != C2_OK) {
+        return;
     }
 
-    sp<LWOmxNode> omxNode = new LWOmxNode(tOmxNode);
-
-    status_t err = SetComponentRole(omxNode, role);
-    if (err != OK) {
-        omxNode->freeNode();
-        ALOGW("Failed to SetComponentRole: component = %s, role = %s.",
-                name, role);
-        return err;
+    // we only handle enumerated values
+    if (profileQuery[0].values.type != C2FieldSupportedValues::VALUES) {
+        return;
     }
 
-    bool isVideo = hasPrefix(mediaType, "video/") == 0;
-    bool isImage = hasPrefix(mediaType, "image/") == 0;
+    // determine if codec supports HDR
+    bool supportsHdr = false;
+    bool supportsHdr10Plus = false;
 
-    if (isVideo || isImage) {
-        OMX_VIDEO_PARAM_PROFILELEVELTYPE param;
-        InitOMXParams(&param);
-        param.nPortIndex = isEncoder ? kPortIndexOutput : kPortIndexInput;
-
-        for (OMX_U32 index = 0; index <= kMaxIndicesToCheck; ++index) {
-            param.nProfileIndex = index;
-            status_t err = omxNode->getParameter(
-                    OMX_IndexParamVideoProfileLevelQuerySupported,
-                    &param, sizeof(param));
-            if (err != OK) {
+    std::vector<std::shared_ptr<C2ParamDescriptor>> paramDescs;
+    c2_status_t err1 = intf->querySupportedParams(&paramDescs);
+    if (err1 == C2_OK) {
+        for (const std::shared_ptr<C2ParamDescriptor> &desc : paramDescs) {
+            switch ((uint32_t)desc->index()) {
+            case C2StreamHdr10PlusInfo::output::PARAM_TYPE:
+                supportsHdr10Plus = true;
+                break;
+            case C2StreamHdrStaticInfo::output::PARAM_TYPE:
+                supportsHdr = true;
+                break;
+            default:
                 break;
             }
-            caps->addProfileLevel(param.eProfile, param.eLevel);
-
-            // AVC components may not list the constrained profiles explicitly, but
-            // decoders that support a profile also support its constrained version.
-            // Encoders must explicitly support constrained profiles.
-            if (!isEncoder && strcasecmp(mediaType, MEDIA_MIMETYPE_VIDEO_AVC) == 0) {
-                if (param.eProfile == OMX_VIDEO_AVCProfileHigh) {
-                    caps->addProfileLevel(OMX_VIDEO_AVCProfileConstrainedHigh, param.eLevel);
-                } else if (param.eProfile == OMX_VIDEO_AVCProfileBaseline) {
-                    caps->addProfileLevel(OMX_VIDEO_AVCProfileConstrainedBaseline, param.eLevel);
-                }
-            }
-
-            if (index == kMaxIndicesToCheck) {
-                ALOGW("[%s] stopping checking profiles after %u: %x/%x",
-                        name, index,
-                        param.eProfile, param.eLevel);
-            }
-        }
-
-        // Color format query
-        // return colors in the order reported by the OMX component
-        // prefix "flexible" standard ones with the flexible equivalent
-        OMX_VIDEO_PARAM_PORTFORMATTYPE portFormat;
-        InitOMXParams(&portFormat);
-        portFormat.nPortIndex = isEncoder ? kPortIndexInput : kPortIndexOutput;
-        for (OMX_U32 index = 0; index <= kMaxIndicesToCheck; ++index) {
-            portFormat.nIndex = index;
-            status_t err = omxNode->getParameter(
-                    OMX_IndexParamVideoPortFormat,
-                    &portFormat, sizeof(portFormat));
-            if (err != OK) {
-                break;
-            }
-
-            OMX_U32 flexibleEquivalent;
-            if (IsFlexibleColorFormat(
-                    omxNode, portFormat.eColorFormat, false /* usingNativeWindow */,
-                    &flexibleEquivalent)) {
-                caps->addColorFormat(flexibleEquivalent);
-            }
-            caps->addColorFormat(portFormat.eColorFormat);
-
-            if (index == kMaxIndicesToCheck) {
-                ALOGW("[%s] stopping checking formats after %u: %s(%x)",
-                        name, index,
-                        asString(portFormat.eColorFormat), portFormat.eColorFormat);
-            }
-        }
-    } else if (strcasecmp(mediaType, MEDIA_MIMETYPE_AUDIO_AAC) == 0) {
-        // More audio codecs if they have profiles.
-        OMX_AUDIO_PARAM_ANDROID_PROFILETYPE param;
-        InitOMXParams(&param);
-        param.nPortIndex = isEncoder ? kPortIndexOutput : kPortIndexInput;
-        for (OMX_U32 index = 0; index <= kMaxIndicesToCheck; ++index) {
-            param.nProfileIndex = index;
-            status_t err = omxNode->getParameter(
-                    (OMX_INDEXTYPE)OMX_IndexParamAudioProfileQuerySupported,
-                    &param, sizeof(param));
-            if (err != OK) {
-                break;
-            }
-            // For audio, level is ignored.
-            caps->addProfileLevel(param.eProfile, 0 /* level */);
-
-            if (index == kMaxIndicesToCheck) {
-                ALOGW("[%s] stopping checking profiles after %u: %x",
-                        name, index,
-                        param.eProfile);
-            }
-        }
-
-        // NOTE: Without Android extensions, OMX does not provide a way to query
-        // AAC profile support
-        if (param.nProfileIndex == 0) {
-            ALOGW("component %s doesn't support profile query.", name);
         }
     }
 
-    if (isVideo && !isEncoder) {
-        native_handle_t *sidebandHandle = nullptr;
-        if (omxNode->configureVideoTunnelMode(
-                kPortIndexOutput, OMX_TRUE, 0, &sidebandHandle) == OK) {
-            // tunneled playback includes adaptive playback
-        } else {
-            // tunneled playback is not supported
-            caps->removeDetail(MediaCodecInfo::Capabilities::FEATURE_TUNNELED_PLAYBACK);
-            if (omxNode->setPortMode(
-                    kPortIndexOutput, IOMX::kPortModeDynamicANWBuffer) == OK ||
-                    omxNode->prepareForAdaptivePlayback(
-                            kPortIndexOutput, OMX_TRUE,
-                            1280 /* width */, 720 /* height */) != OK) {
-                // adaptive playback is not supported
-                caps->removeDetail(MediaCodecInfo::Capabilities::FEATURE_ADAPTIVE_PLAYBACK);
-            }
-        }
-    }
+    // For VP9, the static info is always propagated by framework.
+    supportsHdr |= (mediaType == MIMETYPE_VIDEO_VP9);
 
-    if (isVideo && isEncoder) {
-        OMX_VIDEO_CONFIG_ANDROID_INTRAREFRESHTYPE params;
-        InitOMXParams(&params);
-        params.nPortIndex = kPortIndexOutput;
-
-        OMX_VIDEO_PARAM_INTRAREFRESHTYPE fallbackParams;
-        InitOMXParams(&fallbackParams);
-        fallbackParams.nPortIndex = kPortIndexOutput;
-        fallbackParams.eRefreshMode = OMX_VIDEO_IntraRefreshCyclic;
-
-        if (omxNode->getConfig(
-                (OMX_INDEXTYPE)OMX_IndexConfigAndroidIntraRefresh,
-                &params, sizeof(params)) != OK &&
-                omxNode->getParameter(
-                    OMX_IndexParamVideoIntraRefresh, &fallbackParams,
-                    sizeof(fallbackParams)) != OK) {
-            // intra refresh is not supported
-            caps->removeDetail(MediaCodecInfo::Capabilities::FEATURE_INTRA_REFRESH);
-        }
-    }
-
-    omxNode->freeNode();
-    return OK;
-}
-
-void buildOmxInfo(const MediaCodecsXmlParser& parser,
-                  MediaCodecListWriter* writer) {
-    uint32_t omxRank = ::android::base::GetUintProperty(
-            "debug.stagefright.omx_default_rank", uint32_t(0x100));
-    for (const MediaCodecsXmlParser::Codec& codec : parser.getCodecMap()) {
-        const std::string &name = codec.first;
-        if (!hasPrefix(codec.first, "OMX.")) {
+    for (C2Value::Primitive profile : profileQuery[0].values.values) {
+        pl.profile = (C2Config::profile_t)profile.ref<uint32_t>();
+        std::vector<std::unique_ptr<C2SettingResult>> failures;
+        err = intf->config({&pl}, C2_DONT_BLOCK, &failures);
+        ALOGV("set profile to %u -> %s", pl.profile, asString(err));
+        std::vector<C2FieldSupportedValuesQuery> levelQuery = {
+            C2FieldSupportedValuesQuery::Current(C2ParamField(&pl, &pl.level))
+        };
+        err = intf->querySupportedValues(levelQuery, C2_DONT_BLOCK);
+        ALOGV("query supported levels -> %s | %s", asString(err), asString(levelQuery[0].status));
+        if (err != C2_OK || levelQuery[0].status != C2_OK
+                || levelQuery[0].values.type != C2FieldSupportedValues::VALUES
+                || levelQuery[0].values.values.size() == 0) {
             continue;
         }
-        const MediaCodecsXmlParser::CodecProperties &properties = codec.second;
-        bool encoder = properties.isEncoder;
-        std::unique_ptr<MediaCodecInfoWriter> info =
-                writer->addMediaCodecInfo();
-        info->setName(name.c_str());
-        info->setOwner("default");
-        typename std::underlying_type<MediaCodecInfo::Attributes>::type attrs = 0;
-        if (encoder) {
-            attrs |= MediaCodecInfo::kFlagIsEncoder;
-        }
-        // NOTE: we don't support software-only codecs in OMX
-        if (!hasPrefix(name, "OMX.google.")) {
-            attrs |= MediaCodecInfo::kFlagIsVendor;
-            if (properties.quirkSet.find("attribute::software-codec")
-                    == properties.quirkSet.end()) {
-                attrs |= MediaCodecInfo::kFlagIsHardwareAccelerated;
-            }
-        }
-        info->setAttributes(attrs);
-        info->setRank(omxRank);
-        // OMX components don't have aliases
-        for (const MediaCodecsXmlParser::Type &type : properties.typeMap) {
-            const std::string &mediaType = type.first;
-            std::unique_ptr<MediaCodecInfo::CapabilitiesWriter> caps =
-                    info->addMediaType(mediaType.c_str());
-            const MediaCodecsXmlParser::AttributeMap &attrMap = type.second;
-            for (const MediaCodecsXmlParser::Attribute& attr : attrMap) {
-                const std::string &key = attr.first;
-                const std::string &value = attr.second;
-                if (hasPrefix(key, "feature-") &&
-                        !hasPrefix(key, "feature-bitrate-modes")) {
-                    caps->addDetail(key.c_str(), hasPrefix(value, "1") ? 1 : 0);
-                } else {
-                    caps->addDetail(key.c_str(), value.c_str());
+
+        C2Value::Primitive level = levelQuery[0].values.values.back();
+        pl.level = (C2Config::level_t)level.ref<uint32_t>();
+        ALOGV("supporting level: %u", pl.level);
+        int32_t sdkProfile, sdkLevel;
+        if (mapper && mapper->mapProfile(pl.profile, &sdkProfile)
+                && mapper->mapLevel(pl.level, &sdkLevel)) {
+            caps->addProfileLevel((uint32_t)sdkProfile, (uint32_t)sdkLevel);
+            // also list HDR profiles if component supports HDR
+            if (supportsHdr) {
+                auto hdrMapper = C2Mapper::GetHdrProfileLevelMapper(trait.mediaType);
+                if (hdrMapper && hdrMapper->mapProfile(pl.profile, &sdkProfile)) {
+                    caps->addProfileLevel((uint32_t)sdkProfile, (uint32_t)sdkLevel);
+                }
+                if (supportsHdr10Plus) {
+                    hdrMapper = C2Mapper::GetHdrProfileLevelMapper(
+                            trait.mediaType, true /*isHdr10Plus*/);
+                    if (hdrMapper && hdrMapper->mapProfile(pl.profile, &sdkProfile)) {
+                        caps->addProfileLevel((uint32_t)sdkProfile, (uint32_t)sdkLevel);
+                    }
                 }
             }
-            status_t err = queryOmxCapabilities(
-                    name.c_str(),
-                    mediaType.c_str(),
-                    encoder,
-                    caps.get());
-            if (err != OK) {
-                ALOGI("Failed to query capabilities for %s (media type: %s). Error: %d",
-                        name.c_str(),
-                        mediaType.c_str(),
-                        static_cast<int>(err));
+        } else if (!mapper) {
+            caps->addProfileLevel(pl.profile, pl.level);
+        }
+
+        // for H.263 also advertise the second highest level if the
+        // codec supports level 45, as level 45 only covers level 10
+        // TODO: move this to some form of a setting so it does not
+        // have to be here
+        if (mediaType == MIMETYPE_VIDEO_H263) {
+            C2Config::level_t nextLevel = C2Config::LEVEL_UNUSED;
+            for (C2Value::Primitive v : levelQuery[0].values.values) {
+                C2Config::level_t level = (C2Config::level_t)v.ref<uint32_t>();
+                if (level < C2Config::LEVEL_H263_45 && level > nextLevel) {
+                    nextLevel = level;
+                }
             }
+            if (nextLevel != C2Config::LEVEL_UNUSED
+                    && nextLevel != pl.level
+                    && mapper
+                    && mapper->mapProfile(pl.profile, &sdkProfile)
+                    && mapper->mapLevel(nextLevel, &sdkLevel)) {
+                caps->addProfileLevel(
+                        (uint32_t)sdkProfile, (uint32_t)sdkLevel);
+            }
+        }
+    }
+}
+
+void addSupportedColorFormats(
+        std::shared_ptr<Codec2Client::Interface> intf,
+        MediaCodecInfo::CapabilitiesWriter *caps,
+        const Traits& trait, const std::string &mediaType) {
+    (void)intf;
+
+    // TODO: get this from intf() as well, but how do we map them to
+    // MediaCodec color formats?
+    bool encoder = trait.kind == C2Component::KIND_ENCODER;
+    if (mediaType.find("video") != std::string::npos) {
+        // vendor video codecs prefer opaque format
+        if (trait.name.find("android") == std::string::npos) {
+            caps->addColorFormat(COLOR_FormatSurface);
+        }
+        caps->addColorFormat(COLOR_FormatYUV420Flexible);
+        caps->addColorFormat(COLOR_FormatYUV420Planar);
+        caps->addColorFormat(COLOR_FormatYUV420SemiPlanar);
+        caps->addColorFormat(COLOR_FormatYUV420PackedPlanar);
+        caps->addColorFormat(COLOR_FormatYUV420PackedSemiPlanar);
+        // framework video encoders must support surface format, though it is unclear
+        // that they will be able to map it if it is opaque
+        if (encoder && trait.name.find("android") != std::string::npos) {
+            caps->addColorFormat(COLOR_FormatSurface);
         }
     }
 }
@@ -335,7 +219,7 @@
     // properly. (Assume "full" behavior eventually.)
     //
     // debug.stagefright.ccodec supports 5 values.
-    //   0 - Only OMX components are available.
+    //   0 - No Codec 2.0 components are available.
     //   1 - Audio decoders and encoders with prefix "c2.android." are available
     //       and ranked first.
     //       All other components with prefix "c2.android." are available with
@@ -366,306 +250,156 @@
 
     MediaCodecsXmlParser parser(
             MediaCodecsXmlParser::defaultSearchDirs,
-            option == 0 ? "media_codecs.xml" :
-                          "media_codecs_c2.xml",
-            option == 0 ? "media_codecs_performance.xml" :
-                          "media_codecs_performance_c2.xml");
+            "media_codecs_c2.xml",
+            "media_codecs_performance_c2.xml");
     if (parser.getParsingStatus() != OK) {
         ALOGD("XML parser no good");
         return OK;
     }
 
-    bool surfaceTest(Codec2Client::CreateInputSurface());
-    if (option == 0 || (option != 4 && !surfaceTest)) {
-        buildOmxInfo(parser, writer);
-    }
-
     for (const Traits& trait : traits) {
         C2Component::rank_t rank = trait.rank;
 
-        std::shared_ptr<Codec2Client::Interface> intf =
-            Codec2Client::CreateInterfaceByName(trait.name.c_str());
-        if (!intf || parser.getCodecMap().count(intf->getName()) == 0) {
-            ALOGD("%s not found in xml", trait.name.c_str());
-            continue;
-        }
-        std::string canonName = intf->getName();
-
-        // TODO: Remove this block once all codecs are enabled by default.
-        switch (option) {
-        case 0:
-            continue;
-        case 1:
-            if (hasPrefix(canonName, "c2.vda.")) {
-                break;
+        // Interface must be accessible for us to list the component, and there also
+        // must be an XML entry for the codec. Codec aliases listed in the traits
+        // allow additional XML entries to be specified for each alias. These will
+        // be listed as separate codecs. If no XML entry is specified for an alias,
+        // those will be treated as an additional alias specified in the XML entry
+        // for the interface name.
+        std::vector<std::string> nameAndAliases = trait.aliases;
+        nameAndAliases.insert(nameAndAliases.begin(), trait.name);
+        for (const std::string &nameOrAlias : nameAndAliases) {
+            bool isAlias = trait.name != nameOrAlias;
+            std::shared_ptr<Codec2Client::Interface> intf =
+                Codec2Client::CreateInterfaceByName(nameOrAlias.c_str());
+            if (!intf) {
+                ALOGD("could not create interface for %s'%s'",
+                        isAlias ? "alias " : "",
+                        nameOrAlias.c_str());
+                continue;
             }
-            if (hasPrefix(canonName, "c2.android.")) {
-                if (trait.domain == C2Component::DOMAIN_AUDIO) {
+            if (parser.getCodecMap().count(nameOrAlias) == 0) {
+                if (isAlias) {
+                    std::unique_ptr<MediaCodecInfoWriter> baseCodecInfo =
+                        writer->findMediaCodecInfo(trait.name.c_str());
+                    if (!baseCodecInfo) {
+                        ALOGD("alias '%s' not found in xml but canonical codec info '%s' missing",
+                                nameOrAlias.c_str(),
+                                trait.name.c_str());
+                    } else {
+                        ALOGD("alias '%s' not found in xml; use an XML <Alias> tag for this",
+                                nameOrAlias.c_str());
+                        // merge alias into existing codec
+                        baseCodecInfo->addAlias(nameOrAlias.c_str());
+                    }
+                } else {
+                    ALOGD("component '%s' not found in xml", trait.name.c_str());
+                }
+                continue;
+            }
+            std::string canonName = trait.name;
+
+            // TODO: Remove this block once all codecs are enabled by default.
+            switch (option) {
+            case 0:
+                continue;
+            case 1:
+                if (hasPrefix(canonName, "c2.vda.")) {
+                    break;
+                }
+                if (hasPrefix(canonName, "c2.android.")) {
+                    if (trait.domain == C2Component::DOMAIN_AUDIO) {
+                        rank = 1;
+                        break;
+                    }
+                    break;
+                }
+                if (hasSuffix(canonName, ".avc.decoder") ||
+                        hasSuffix(canonName, ".avc.encoder")) {
+                    rank = std::numeric_limits<decltype(rank)>::max();
+                    break;
+                }
+                continue;
+            case 2:
+                if (hasPrefix(canonName, "c2.vda.")) {
+                    break;
+                }
+                if (hasPrefix(canonName, "c2.android.")) {
                     rank = 1;
                     break;
                 }
+                if (hasSuffix(canonName, ".avc.decoder") ||
+                        hasSuffix(canonName, ".avc.encoder")) {
+                    rank = std::numeric_limits<decltype(rank)>::max();
+                    break;
+                }
+                continue;
+            case 3:
+                if (hasPrefix(canonName, "c2.android.")) {
+                    rank = 1;
+                }
                 break;
             }
-            if (hasSuffix(canonName, ".avc.decoder") ||
-                    hasSuffix(canonName, ".avc.encoder")) {
-                rank = std::numeric_limits<decltype(rank)>::max();
-                break;
-            }
-            continue;
-        case 2:
-            if (hasPrefix(canonName, "c2.vda.")) {
-                break;
-            }
-            if (hasPrefix(canonName, "c2.android.")) {
-                rank = 1;
-                break;
-            }
-            if (hasSuffix(canonName, ".avc.decoder") ||
-                    hasSuffix(canonName, ".avc.encoder")) {
-                rank = std::numeric_limits<decltype(rank)>::max();
-                break;
-            }
-            continue;
-        case 3:
-            if (hasPrefix(canonName, "c2.android.")) {
-                rank = 1;
-            }
-            break;
-        }
 
-        ALOGV("canonName = %s", canonName.c_str());
-        std::unique_ptr<MediaCodecInfoWriter> codecInfo = writer->addMediaCodecInfo();
-        codecInfo->setName(trait.name.c_str());
-        codecInfo->setOwner(("codec2::" + trait.owner).c_str());
-        const MediaCodecsXmlParser::CodecProperties &codec = parser.getCodecMap().at(canonName);
+            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;
+            bool encoder = trait.kind == C2Component::KIND_ENCODER;
+            typename std::underlying_type<MediaCodecInfo::Attributes>::type attrs = 0;
 
-        if (encoder) {
-            attrs |= MediaCodecInfo::kFlagIsEncoder;
-        }
-        if (trait.owner == "software") {
-            attrs |= MediaCodecInfo::kFlagIsSoftwareOnly;
-        } else {
-            attrs |= MediaCodecInfo::kFlagIsVendor;
-            if (trait.owner == "vendor-software") {
+            if (encoder) {
+                attrs |= MediaCodecInfo::kFlagIsEncoder;
+            }
+            if (trait.owner == "software") {
                 attrs |= MediaCodecInfo::kFlagIsSoftwareOnly;
-            } else if (codec.quirkSet.find("attribute::software-codec") == codec.quirkSet.end()) {
-                attrs |= MediaCodecInfo::kFlagIsHardwareAccelerated;
-            }
-        }
-        codecInfo->setAttributes(attrs);
-        codecInfo->setRank(rank);
-
-        for (const std::string &alias : codec.aliases) {
-            codecInfo->addAlias(alias.c_str());
-        }
-
-        for (auto typeIt = codec.typeMap.begin(); typeIt != codec.typeMap.end(); ++typeIt) {
-            const std::string &mediaType = typeIt->first;
-            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;
-                if (key.find("feature-") == 0 && key.find("feature-bitrate-modes") != 0) {
-                    caps->addDetail(key.c_str(), std::stoi(value));
-                } else {
-                    caps->addDetail(key.c_str(), value.c_str());
+            } else {
+                attrs |= MediaCodecInfo::kFlagIsVendor;
+                if (trait.owner == "vendor-software") {
+                    attrs |= MediaCodecInfo::kFlagIsSoftwareOnly;
+                } else if (codec.quirkSet.find("attribute::software-codec")
+                        == codec.quirkSet.end()) {
+                    attrs |= MediaCodecInfo::kFlagIsHardwareAccelerated;
                 }
             }
-
-            bool gotProfileLevels = false;
-            if (intf) {
-                std::shared_ptr<C2Mapper::ProfileLevelMapper> mapper =
-                    C2Mapper::GetProfileLevelMapper(trait.mediaType);
-                // if we don't know the media type, pass through all values unmapped
-
-                // TODO: we cannot find levels that are local 'maxima' without knowing the coding
-                // e.g. H.263 level 45 and level 30 could be two values for highest level as
-                // they don't include one another. For now we use the last supported value.
-                C2StreamProfileLevelInfo pl(encoder /* output */, 0u);
-                std::vector<C2FieldSupportedValuesQuery> profileQuery = {
-                    C2FieldSupportedValuesQuery::Possible(C2ParamField(&pl, &pl.profile))
-                };
-
-                c2_status_t err = intf->querySupportedValues(profileQuery, C2_DONT_BLOCK);
-                ALOGV("query supported profiles -> %s | %s",
-                        asString(err), asString(profileQuery[0].status));
-                if (err == C2_OK && profileQuery[0].status == C2_OK) {
-                    if (profileQuery[0].values.type == C2FieldSupportedValues::VALUES) {
-                        std::vector<std::shared_ptr<C2ParamDescriptor>> paramDescs;
-                        c2_status_t err1 = intf->querySupportedParams(&paramDescs);
-                        bool isHdr = false, isHdr10Plus = false;
-                        if (err1 == C2_OK) {
-                            for (const std::shared_ptr<C2ParamDescriptor> &desc : paramDescs) {
-                                if ((uint32_t)desc->index() ==
-                                        C2StreamHdr10PlusInfo::output::PARAM_TYPE) {
-                                    isHdr10Plus = true;
-                                } else if ((uint32_t)desc->index() ==
-                                        C2StreamHdrStaticInfo::output::PARAM_TYPE) {
-                                    isHdr = true;
-                                }
-                            }
-                        }
-                        // For VP9, the static info is always propagated by framework.
-                        isHdr |= (mediaType == MIMETYPE_VIDEO_VP9);
-
-                        for (C2Value::Primitive profile : profileQuery[0].values.values) {
-                            pl.profile = (C2Config::profile_t)profile.ref<uint32_t>();
-                            std::vector<std::unique_ptr<C2SettingResult>> failures;
-                            err = intf->config({&pl}, C2_DONT_BLOCK, &failures);
-                            ALOGV("set profile to %u -> %s", pl.profile, asString(err));
-                            std::vector<C2FieldSupportedValuesQuery> levelQuery = {
-                                C2FieldSupportedValuesQuery::Current(C2ParamField(&pl, &pl.level))
-                            };
-                            err = intf->querySupportedValues(levelQuery, C2_DONT_BLOCK);
-                            ALOGV("query supported levels -> %s | %s",
-                                    asString(err), asString(levelQuery[0].status));
-                            if (err == C2_OK && levelQuery[0].status == C2_OK) {
-                                if (levelQuery[0].values.type == C2FieldSupportedValues::VALUES
-                                        && levelQuery[0].values.values.size() > 0) {
-                                    C2Value::Primitive level = levelQuery[0].values.values.back();
-                                    pl.level = (C2Config::level_t)level.ref<uint32_t>();
-                                    ALOGV("supporting level: %u", pl.level);
-                                    int32_t sdkProfile, sdkLevel;
-                                    if (mapper && mapper->mapProfile(pl.profile, &sdkProfile)
-                                            && mapper->mapLevel(pl.level, &sdkLevel)) {
-                                        caps->addProfileLevel(
-                                                (uint32_t)sdkProfile, (uint32_t)sdkLevel);
-                                        gotProfileLevels = true;
-                                        if (isHdr) {
-                                            auto hdrMapper = C2Mapper::GetHdrProfileLevelMapper(
-                                                    trait.mediaType);
-                                            if (hdrMapper && hdrMapper->mapProfile(
-                                                    pl.profile, &sdkProfile)) {
-                                                caps->addProfileLevel(
-                                                        (uint32_t)sdkProfile,
-                                                        (uint32_t)sdkLevel);
-                                            }
-                                            if (isHdr10Plus) {
-                                                hdrMapper = C2Mapper::GetHdrProfileLevelMapper(
-                                                        trait.mediaType, true /*isHdr10Plus*/);
-                                                if (hdrMapper && hdrMapper->mapProfile(
-                                                        pl.profile, &sdkProfile)) {
-                                                    caps->addProfileLevel(
-                                                            (uint32_t)sdkProfile,
-                                                            (uint32_t)sdkLevel);
-                                                }
-                                            }
-                                        }
-                                    } else if (!mapper) {
-                                        caps->addProfileLevel(pl.profile, pl.level);
-                                        gotProfileLevels = true;
-                                    }
-
-                                    // for H.263 also advertise the second highest level if the
-                                    // codec supports level 45, as level 45 only covers level 10
-                                    // TODO: move this to some form of a setting so it does not
-                                    // have to be here
-                                    if (mediaType == MIMETYPE_VIDEO_H263) {
-                                        C2Config::level_t nextLevel = C2Config::LEVEL_UNUSED;
-                                        for (C2Value::Primitive v : levelQuery[0].values.values) {
-                                            C2Config::level_t level =
-                                                (C2Config::level_t)v.ref<uint32_t>();
-                                            if (level < C2Config::LEVEL_H263_45
-                                                    && level > nextLevel) {
-                                                nextLevel = level;
-                                            }
-                                        }
-                                        if (nextLevel != C2Config::LEVEL_UNUSED
-                                                && nextLevel != pl.level
-                                                && mapper
-                                                && mapper->mapProfile(pl.profile, &sdkProfile)
-                                                && mapper->mapLevel(nextLevel, &sdkLevel)) {
-                                            caps->addProfileLevel(
-                                                    (uint32_t)sdkProfile, (uint32_t)sdkLevel);
-                                        }
-                                    }
-                                }
-                            }
-                        }
-                    }
+            codecInfo->setAttributes(attrs);
+            if (!codec.rank.empty()) {
+                uint32_t xmlRank;
+                char dummy;
+                if (sscanf(codec.rank.c_str(), "%u%c", &xmlRank, &dummy) == 1) {
+                    rank = xmlRank;
                 }
             }
+            codecInfo->setRank(rank);
 
-            if (!gotProfileLevels) {
-                if (mediaType == MIMETYPE_VIDEO_VP9) {
-                    if (encoder) {
-                        caps->addProfileLevel(VP9Profile0,    VP9Level41);
-                    } else {
-                        caps->addProfileLevel(VP9Profile0,    VP9Level5);
-                        caps->addProfileLevel(VP9Profile2,    VP9Level5);
-                        caps->addProfileLevel(VP9Profile2HDR, VP9Level5);
-                    }
-                } else if (mediaType == MIMETYPE_VIDEO_AV1 && !encoder) {
-                    caps->addProfileLevel(AV1Profile0,      AV1Level2);
-                    caps->addProfileLevel(AV1Profile0,      AV1Level21);
-                    caps->addProfileLevel(AV1Profile1,      AV1Level22);
-                    caps->addProfileLevel(AV1Profile1,      AV1Level3);
-                    caps->addProfileLevel(AV1Profile2,      AV1Level31);
-                    caps->addProfileLevel(AV1Profile2,      AV1Level32);
-                } else if (mediaType == MIMETYPE_VIDEO_HEVC && !encoder) {
-                    caps->addProfileLevel(HEVCProfileMain,      HEVCMainTierLevel51);
-                    caps->addProfileLevel(HEVCProfileMainStill, HEVCMainTierLevel51);
-                } else if (mediaType == MIMETYPE_VIDEO_VP8) {
-                    if (encoder) {
-                        caps->addProfileLevel(VP8ProfileMain, VP8Level_Version0);
-                    } else {
-                        caps->addProfileLevel(VP8ProfileMain, VP8Level_Version0);
-                    }
-                } else if (mediaType == MIMETYPE_VIDEO_AVC) {
-                    if (encoder) {
-                        caps->addProfileLevel(AVCProfileBaseline,            AVCLevel41);
-//                      caps->addProfileLevel(AVCProfileConstrainedBaseline, AVCLevel41);
-                        caps->addProfileLevel(AVCProfileMain,                AVCLevel41);
-                    } else {
-                        caps->addProfileLevel(AVCProfileBaseline,            AVCLevel52);
-                        caps->addProfileLevel(AVCProfileConstrainedBaseline, AVCLevel52);
-                        caps->addProfileLevel(AVCProfileMain,                AVCLevel52);
-                        caps->addProfileLevel(AVCProfileConstrainedHigh,     AVCLevel52);
-                        caps->addProfileLevel(AVCProfileHigh,                AVCLevel52);
-                    }
-                } else if (mediaType == MIMETYPE_VIDEO_MPEG4) {
-                    if (encoder) {
-                        caps->addProfileLevel(MPEG4ProfileSimple,  MPEG4Level2);
-                    } else {
-                        caps->addProfileLevel(MPEG4ProfileSimple,  MPEG4Level3);
-                    }
-                } else if (mediaType == MIMETYPE_VIDEO_H263) {
-                    if (encoder) {
-                        caps->addProfileLevel(H263ProfileBaseline, H263Level45);
-                    } else {
-                        caps->addProfileLevel(H263ProfileBaseline, H263Level30);
-                        caps->addProfileLevel(H263ProfileBaseline, H263Level45);
-                        caps->addProfileLevel(H263ProfileISWV2,    H263Level30);
-                        caps->addProfileLevel(H263ProfileISWV2,    H263Level45);
-                    }
-                } else if (mediaType == MIMETYPE_VIDEO_MPEG2 && !encoder) {
-                    caps->addProfileLevel(MPEG2ProfileSimple, MPEG2LevelHL);
-                    caps->addProfileLevel(MPEG2ProfileMain,   MPEG2LevelHL);
-                }
+            for (const std::string &alias : codec.aliases) {
+                ALOGV("adding alias '%s'", alias.c_str());
+                codecInfo->addAlias(alias.c_str());
             }
 
-            // TODO: get this from intf() as well, but how do we map them to
-            // MediaCodec color formats?
-            if (mediaType.find("video") != std::string::npos) {
-                // vendor video codecs prefer opaque format
-                if (trait.name.find("android") == std::string::npos) {
-                    caps->addColorFormat(COLOR_FormatSurface);
+            for (auto typeIt = codec.typeMap.begin(); typeIt != codec.typeMap.end(); ++typeIt) {
+                const std::string &mediaType = typeIt->first;
+                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;
+                    if (key.find("feature-") == 0 && key.find("feature-bitrate-modes") != 0) {
+                        int32_t intValue = 0;
+                        // Ignore trailing bad characters and default to 0.
+                        (void)sscanf(value.c_str(), "%d", &intValue);
+                        caps->addDetail(key.c_str(), intValue);
+                    } else {
+                        caps->addDetail(key.c_str(), value.c_str());
+                    }
                 }
-                caps->addColorFormat(COLOR_FormatYUV420Flexible);
-                caps->addColorFormat(COLOR_FormatYUV420Planar);
-                caps->addColorFormat(COLOR_FormatYUV420SemiPlanar);
-                caps->addColorFormat(COLOR_FormatYUV420PackedPlanar);
-                caps->addColorFormat(COLOR_FormatYUV420PackedSemiPlanar);
-                // framework video encoders must support surface format, though it is unclear
-                // that they will be able to map it if it is opaque
-                if (encoder && trait.name.find("android") != std::string::npos) {
-                    caps->addColorFormat(COLOR_FormatSurface);
-                }
+
+                addSupportedProfileLevels(intf, caps.get(), trait, mediaType);
+                addSupportedColorFormats(intf, caps.get(), trait, mediaType);
             }
         }
     }
@@ -677,4 +411,3 @@
 extern "C" android::MediaCodecListBuilderBase *CreateBuilder() {
     return new android::Codec2InfoBuilder;
 }
-
diff --git a/media/codec2/vndk/C2Store.cpp b/media/codec2/vndk/C2Store.cpp
index dc7e89c..f07d9b0 100644
--- a/media/codec2/vndk/C2Store.cpp
+++ b/media/codec2/vndk/C2Store.cpp
@@ -517,7 +517,6 @@
          *
          * \note Only used by ComponentLoader.
          *
-         * \param alias[in]   module alias
          * \param libPath[in] library path
          *
          * \retval C2_OK        the component module has been successfully loaded
@@ -527,7 +526,7 @@
          * \retval C2_REFUSED   permission denied to load the component module (unexpected)
          * \retval C2_TIMED_OUT could not load the module within the time limit (unexpected)
          */
-        c2_status_t init(std::string alias, std::string libPath);
+        c2_status_t init(std::string libPath);
 
         virtual ~ComponentModule() override;
 
@@ -570,7 +569,7 @@
             std::shared_ptr<ComponentModule> localModule = mModule.lock();
             if (localModule == nullptr) {
                 localModule = std::make_shared<ComponentModule>();
-                res = localModule->init(mAlias, mLibPath);
+                res = localModule->init(mLibPath);
                 if (res == C2_OK) {
                     mModule = localModule;
                 }
@@ -582,13 +581,12 @@
         /**
          * Creates a component loader for a specific library path (or name).
          */
-        ComponentLoader(std::string alias, std::string libPath)
-            : mAlias(alias), mLibPath(libPath) {}
+        ComponentLoader(std::string libPath)
+            : mLibPath(libPath) {}
 
     private:
         std::mutex mMutex; ///< mutex guarding the module
         std::weak_ptr<ComponentModule> mModule; ///< weak reference to the loaded module
-        std::string mAlias; ///< component alias
         std::string mLibPath; ///< library path
     };
 
@@ -624,9 +622,10 @@
     };
 
     /**
-     * Retrieves the component loader for a component.
+     * Retrieves the component module for a component.
      *
-     * \return a non-ref-holding pointer to the component loader.
+     * \param module pointer to a shared_pointer where the component module will be stored on
+     *               success.
      *
      * \retval C2_OK        the component loader has been successfully retrieved
      * \retval C2_NO_MEMORY not enough memory to locate the component loader
@@ -640,16 +639,25 @@
      *                      component but some components could not be loaded due to lack of
      *                      permissions)
      */
-    c2_status_t findComponent(C2String name, ComponentLoader **loader);
+    c2_status_t findComponent(C2String name, std::shared_ptr<ComponentModule> *module);
 
-    std::map<C2String, ComponentLoader> mComponents; ///< map of name -> components
-    std::vector<C2String> mComponentsList; ///< list of components
+    /**
+     * Loads each component module and discover its contents.
+     */
+    void visitComponents();
+
+    std::mutex mMutex; ///< mutex guarding the component lists during construction
+    bool mVisited; ///< component modules visited
+    std::map<C2String, ComponentLoader> mComponents; ///< path -> component module
+    std::map<C2String, C2String> mComponentNameToPath; ///< name -> path
+    std::vector<std::shared_ptr<const C2Component::Traits>> mComponentList;
+
     std::shared_ptr<C2ReflectorHelper> mReflector;
     Interface mInterface;
 };
 
 c2_status_t C2PlatformComponentStore::ComponentModule::init(
-        std::string alias, std::string libPath) {
+        std::string libPath) {
     ALOGV("in %s", __func__);
     ALOGV("loading dll");
     mLibHandle = dlopen(libPath.c_str(), RTLD_NOW|RTLD_NODELETE);
@@ -684,13 +692,27 @@
 
     std::shared_ptr<C2Component::Traits> traits(new (std::nothrow) C2Component::Traits);
     if (traits) {
-        if (alias != intf->getName()) {
-            ALOGV("%s is alias to %s", alias.c_str(), intf->getName().c_str());
+        traits->name = intf->getName();
+
+        C2ComponentKindSetting kind;
+        C2ComponentDomainSetting domain;
+        res = intf->query_vb({ &kind, &domain }, {}, C2_MAY_BLOCK, nullptr);
+        bool fixDomain = res != C2_OK;
+        if (res == C2_OK) {
+            traits->kind = kind.value;
+            traits->domain = domain.value;
+        } else {
+            // TODO: remove this fall-back
+            ALOGD("failed to query interface for kind and domain: %d", res);
+
+            traits->kind =
+                (traits->name.find("encoder") != std::string::npos) ? C2Component::KIND_ENCODER :
+                (traits->name.find("decoder") != std::string::npos) ? C2Component::KIND_DECODER :
+                C2Component::KIND_OTHER;
         }
-        traits->name = alias;
-        // TODO: get this from interface properly.
-        bool encoder = (traits->name.find("encoder") != std::string::npos);
-        uint32_t mediaTypeIndex = encoder ? C2PortMimeConfig::output::PARAM_TYPE
+
+        uint32_t mediaTypeIndex =
+                traits->kind == C2Component::KIND_ENCODER ? C2PortMimeConfig::output::PARAM_TYPE
                 : C2PortMimeConfig::input::PARAM_TYPE;
         std::vector<std::unique_ptr<C2Param>> params;
         res = intf->query_vb({}, { mediaTypeIndex }, C2_MAY_BLOCK, &params);
@@ -702,29 +724,54 @@
             ALOGD("failed to query interface: unexpected vector size: %zu", params.size());
             return mInit;
         }
-        C2PortMimeConfig *mediaTypeConfig = (C2PortMimeConfig *)(params[0].get());
+        C2PortMimeConfig *mediaTypeConfig = C2PortMimeConfig::From(params[0].get());
         if (mediaTypeConfig == nullptr) {
             ALOGD("failed to query media type");
             return mInit;
         }
-        traits->mediaType = mediaTypeConfig->m.value;
-        // TODO: get this properly.
-        traits->rank = 0x200;
+        traits->mediaType =
+            std::string(mediaTypeConfig->m.value,
+                        strnlen(mediaTypeConfig->m.value, mediaTypeConfig->flexCount()));
 
-        // TODO: define these values properly
-        bool decoder = (traits->name.find("decoder") != std::string::npos);
-        traits->kind =
-                decoder ? C2Component::KIND_DECODER :
-                encoder ? C2Component::KIND_ENCODER :
-                C2Component::KIND_OTHER;
-        if (strncmp(traits->mediaType.c_str(), "audio/", 6) == 0) {
-            traits->domain = C2Component::DOMAIN_AUDIO;
-        } else if (strncmp(traits->mediaType.c_str(), "video/", 6) == 0) {
-            traits->domain = C2Component::DOMAIN_VIDEO;
-        } else if (strncmp(traits->mediaType.c_str(), "image/", 6) == 0) {
-            traits->domain = C2Component::DOMAIN_IMAGE;
-        } else {
-            traits->domain = C2Component::DOMAIN_OTHER;
+        if (fixDomain) {
+            if (strncmp(traits->mediaType.c_str(), "audio/", 6) == 0) {
+                traits->domain = C2Component::DOMAIN_AUDIO;
+            } else if (strncmp(traits->mediaType.c_str(), "video/", 6) == 0) {
+                traits->domain = C2Component::DOMAIN_VIDEO;
+            } else if (strncmp(traits->mediaType.c_str(), "image/", 6) == 0) {
+                traits->domain = C2Component::DOMAIN_IMAGE;
+            } else {
+                traits->domain = C2Component::DOMAIN_OTHER;
+            }
+        }
+
+        // TODO: get this properly from the store during emplace
+        switch (traits->domain) {
+        case C2Component::DOMAIN_AUDIO:
+            traits->rank = 8;
+            break;
+        default:
+            traits->rank = 512;
+        }
+
+        params.clear();
+        res = intf->query_vb({}, { C2ComponentAliasesSetting::PARAM_TYPE }, C2_MAY_BLOCK, &params);
+        if (res == C2_OK && params.size() == 1u) {
+            C2ComponentAliasesSetting *aliasesSetting =
+                C2ComponentAliasesSetting::From(params[0].get());
+            if (aliasesSetting) {
+                // Split aliases on ','
+                // This looks simpler in plain C and even std::string would still make a copy.
+                char *aliases = ::strndup(aliasesSetting->m.value, aliasesSetting->flexCount());
+                ALOGD("'%s' has aliases: '%s'", intf->getName().c_str(), aliases);
+
+                for (char *tok, *ptr, *str = aliases; (tok = ::strtok_r(str, ",", &ptr));
+                        str = nullptr) {
+                    traits->aliases.push_back(tok);
+                    ALOGD("adding alias: '%s'", tok);
+                }
+                free(aliases);
+            }
         }
     }
     mTraits = traits;
@@ -783,82 +830,45 @@
 }
 
 C2PlatformComponentStore::C2PlatformComponentStore()
-    : mReflector(std::make_shared<C2ReflectorHelper>()),
+    : mVisited(false),
+      mReflector(std::make_shared<C2ReflectorHelper>()),
       mInterface(mReflector) {
 
-    auto emplace = [this](const char *alias, const char *libPath) {
-        // ComponentLoader is neither copiable nor movable, so it must be
-        // constructed in-place. Now ComponentLoader takes two arguments in
-        // constructor, so we need to use piecewise_construct to achieve this
-        // behavior.
-        mComponents.emplace(
-                std::piecewise_construct,
-                std::forward_as_tuple(alias),
-                std::forward_as_tuple(alias, libPath));
-        mComponentsList.emplace_back(alias);
+    auto emplace = [this](const char *libPath) {
+        mComponents.emplace(libPath, libPath);
     };
-    // TODO: move this also into a .so so it can be updated
-    emplace("c2.android.avc.decoder", "libcodec2_soft_avcdec.so");
-    emplace("c2.android.avc.encoder", "libcodec2_soft_avcenc.so");
-    emplace("c2.android.aac.decoder", "libcodec2_soft_aacdec.so");
-    emplace("c2.android.aac.encoder", "libcodec2_soft_aacenc.so");
-    emplace("c2.android.amrnb.decoder", "libcodec2_soft_amrnbdec.so");
-    emplace("c2.android.amrnb.encoder", "libcodec2_soft_amrnbenc.so");
-    emplace("c2.android.amrwb.decoder", "libcodec2_soft_amrwbdec.so");
-    emplace("c2.android.amrwb.encoder", "libcodec2_soft_amrwbenc.so");
-    emplace("c2.android.hevc.decoder", "libcodec2_soft_hevcdec.so");
-    emplace("c2.android.g711.alaw.decoder", "libcodec2_soft_g711alawdec.so");
-    emplace("c2.android.g711.mlaw.decoder", "libcodec2_soft_g711mlawdec.so");
-    emplace("c2.android.mpeg2.decoder", "libcodec2_soft_mpeg2dec.so");
-    emplace("c2.android.h263.decoder", "libcodec2_soft_h263dec.so");
-    emplace("c2.android.h263.encoder", "libcodec2_soft_h263enc.so");
-    emplace("c2.android.mpeg4.decoder", "libcodec2_soft_mpeg4dec.so");
-    emplace("c2.android.mpeg4.encoder", "libcodec2_soft_mpeg4enc.so");
-    emplace("c2.android.mp3.decoder", "libcodec2_soft_mp3dec.so");
-    emplace("c2.android.vorbis.decoder", "libcodec2_soft_vorbisdec.so");
-    emplace("c2.android.opus.decoder", "libcodec2_soft_opusdec.so");
-    emplace("c2.android.opus.encoder", "libcodec2_soft_opusenc.so");
-    emplace("c2.android.vp8.decoder", "libcodec2_soft_vp8dec.so");
-    emplace("c2.android.vp9.decoder", "libcodec2_soft_vp9dec.so");
-    emplace("c2.android.vp8.encoder", "libcodec2_soft_vp8enc.so");
-    emplace("c2.android.vp9.encoder", "libcodec2_soft_vp9enc.so");
-    emplace("c2.android.av1.decoder", "libcodec2_soft_av1dec.so");
-    emplace("c2.android.raw.decoder", "libcodec2_soft_rawdec.so");
-    emplace("c2.android.flac.decoder", "libcodec2_soft_flacdec.so");
-    emplace("c2.android.flac.encoder", "libcodec2_soft_flacenc.so");
-    emplace("c2.android.gsm.decoder", "libcodec2_soft_gsmdec.so");
-    emplace("c2.android.xaac.decoder", "libcodec2_soft_xaacdec.so");
 
-    // "Aliases"
-    // TODO: use aliases proper from C2Component::Traits
-    emplace("OMX.google.h264.decoder", "libcodec2_soft_avcdec.so");
-    emplace("OMX.google.h264.encoder", "libcodec2_soft_avcenc.so");
-    emplace("OMX.google.aac.decoder", "libcodec2_soft_aacdec.so");
-    emplace("OMX.google.aac.encoder", "libcodec2_soft_aacenc.so");
-    emplace("OMX.google.amrnb.decoder", "libcodec2_soft_amrnbdec.so");
-    emplace("OMX.google.amrnb.encoder", "libcodec2_soft_amrnbenc.so");
-    emplace("OMX.google.amrwb.decoder", "libcodec2_soft_amrwbdec.so");
-    emplace("OMX.google.amrwb.encoder", "libcodec2_soft_amrwbenc.so");
-    emplace("OMX.google.hevc.decoder", "libcodec2_soft_hevcdec.so");
-    emplace("OMX.google.g711.alaw.decoder", "libcodec2_soft_g711alawdec.so");
-    emplace("OMX.google.g711.mlaw.decoder", "libcodec2_soft_g711mlawdec.so");
-    emplace("OMX.google.mpeg2.decoder", "libcodec2_soft_mpeg2dec.so");
-    emplace("OMX.google.h263.decoder", "libcodec2_soft_h263dec.so");
-    emplace("OMX.google.h263.encoder", "libcodec2_soft_h263enc.so");
-    emplace("OMX.google.mpeg4.decoder", "libcodec2_soft_mpeg4dec.so");
-    emplace("OMX.google.mpeg4.encoder", "libcodec2_soft_mpeg4enc.so");
-    emplace("OMX.google.mp3.decoder", "libcodec2_soft_mp3dec.so");
-    emplace("OMX.google.vorbis.decoder", "libcodec2_soft_vorbisdec.so");
-    emplace("OMX.google.opus.decoder", "libcodec2_soft_opusdec.so");
-    emplace("OMX.google.vp8.decoder", "libcodec2_soft_vp8dec.so");
-    emplace("OMX.google.vp9.decoder", "libcodec2_soft_vp9dec.so");
-    emplace("OMX.google.vp8.encoder", "libcodec2_soft_vp8enc.so");
-    emplace("OMX.google.vp9.encoder", "libcodec2_soft_vp9enc.so");
-    emplace("OMX.google.raw.decoder", "libcodec2_soft_rawdec.so");
-    emplace("OMX.google.flac.decoder", "libcodec2_soft_flacdec.so");
-    emplace("OMX.google.flac.encoder", "libcodec2_soft_flacenc.so");
-    emplace("OMX.google.gsm.decoder", "libcodec2_soft_gsmdec.so");
-    emplace("OMX.google.xaac.decoder", "libcodec2_soft_xaacdec.so");
+    // TODO: move this also into a .so so it can be updated
+    emplace("libcodec2_soft_aacdec.so");
+    emplace("libcodec2_soft_aacenc.so");
+    emplace("libcodec2_soft_amrnbdec.so");
+    emplace("libcodec2_soft_amrnbenc.so");
+    emplace("libcodec2_soft_amrwbdec.so");
+    emplace("libcodec2_soft_amrwbenc.so");
+    emplace("libcodec2_soft_av1dec.so");
+    emplace("libcodec2_soft_avcdec.so");
+    emplace("libcodec2_soft_avcenc.so");
+    emplace("libcodec2_soft_flacdec.so");
+    emplace("libcodec2_soft_flacenc.so");
+    emplace("libcodec2_soft_g711alawdec.so");
+    emplace("libcodec2_soft_g711mlawdec.so");
+    emplace("libcodec2_soft_gsmdec.so");
+    emplace("libcodec2_soft_h263dec.so");
+    emplace("libcodec2_soft_h263enc.so");
+    emplace("libcodec2_soft_hevcdec.so");
+    emplace("libcodec2_soft_mp3dec.so");
+    emplace("libcodec2_soft_mpeg2dec.so");
+    emplace("libcodec2_soft_mpeg4dec.so");
+    emplace("libcodec2_soft_mpeg4enc.so");
+    emplace("libcodec2_soft_opusdec.so");
+    emplace("libcodec2_soft_opusenc.so");
+    emplace("libcodec2_soft_rawdec.so");
+    emplace("libcodec2_soft_vorbisdec.so");
+    emplace("libcodec2_soft_vp8dec.so");
+    emplace("libcodec2_soft_vp8enc.so");
+    emplace("libcodec2_soft_vp9dec.so");
+    emplace("libcodec2_soft_vp9enc.so");
+    emplace("libcodec2_soft_xaacdec.so");
 }
 
 c2_status_t C2PlatformComponentStore::copyBuffer(
@@ -881,47 +891,56 @@
     return mInterface.config(params, C2_MAY_BLOCK, failures);
 }
 
-std::vector<std::shared_ptr<const C2Component::Traits>> C2PlatformComponentStore::listComponents() {
-    // This method SHALL return within 500ms.
-    std::vector<std::shared_ptr<const C2Component::Traits>> list;
-    for (const C2String &alias : mComponentsList) {
-        ComponentLoader &loader = mComponents.at(alias);
+void C2PlatformComponentStore::visitComponents() {
+    std::lock_guard<std::mutex> lock(mMutex);
+    if (mVisited) {
+        return;
+    }
+    for (auto &pathAndLoader : mComponents) {
+        const C2String &path = pathAndLoader.first;
+        ComponentLoader &loader = pathAndLoader.second;
         std::shared_ptr<ComponentModule> module;
-        c2_status_t res = loader.fetchModule(&module);
-        if (res == C2_OK) {
+        if (loader.fetchModule(&module) == C2_OK) {
             std::shared_ptr<const C2Component::Traits> traits = module->getTraits();
             if (traits) {
-                list.push_back(traits);
+                mComponentList.push_back(traits);
+                mComponentNameToPath.emplace(traits->name, path);
+                for (const C2String &alias : traits->aliases) {
+                    mComponentNameToPath.emplace(alias, path);
+                }
             }
         }
     }
-    return list;
+    mVisited = true;
 }
 
-c2_status_t C2PlatformComponentStore::findComponent(C2String name, ComponentLoader **loader) {
-    *loader = nullptr;
-    auto pos = mComponents.find(name);
-    // TODO: check aliases
-    if (pos == mComponents.end()) {
-        return C2_NOT_FOUND;
+std::vector<std::shared_ptr<const C2Component::Traits>> C2PlatformComponentStore::listComponents() {
+    // This method SHALL return within 500ms.
+    visitComponents();
+    return mComponentList;
+}
+
+c2_status_t C2PlatformComponentStore::findComponent(
+        C2String name, std::shared_ptr<ComponentModule> *module) {
+    (*module).reset();
+    visitComponents();
+
+    auto pos = mComponentNameToPath.find(name);
+    if (pos != mComponentNameToPath.end()) {
+        return mComponents.at(pos->second).fetchModule(module);
     }
-    *loader = &pos->second;
-    return C2_OK;
+    return C2_NOT_FOUND;
 }
 
 c2_status_t C2PlatformComponentStore::createComponent(
         C2String name, std::shared_ptr<C2Component> *const component) {
     // This method SHALL return within 100ms.
     component->reset();
-    ComponentLoader *loader;
-    c2_status_t res = findComponent(name, &loader);
+    std::shared_ptr<ComponentModule> module;
+    c2_status_t res = findComponent(name, &module);
     if (res == C2_OK) {
-        std::shared_ptr<ComponentModule> module;
-        res = loader->fetchModule(&module);
-        if (res == C2_OK) {
-            // TODO: get a unique node ID
-            res = module->createComponent(0, component);
-        }
+        // TODO: get a unique node ID
+        res = module->createComponent(0, component);
     }
     return res;
 }
@@ -930,15 +949,11 @@
         C2String name, std::shared_ptr<C2ComponentInterface> *const interface) {
     // This method SHALL return within 100ms.
     interface->reset();
-    ComponentLoader *loader;
-    c2_status_t res = findComponent(name, &loader);
+    std::shared_ptr<ComponentModule> module;
+    c2_status_t res = findComponent(name, &module);
     if (res == C2_OK) {
-        std::shared_ptr<ComponentModule> module;
-        res = loader->fetchModule(&module);
-        if (res == C2_OK) {
-            // TODO: get a unique node ID
-            res = module->createInterface(0, interface);
-        }
+        // TODO: get a unique node ID
+        res = module->createInterface(0, interface);
     }
     return res;
 }
diff --git a/media/libstagefright/MediaCodecList.cpp b/media/libstagefright/MediaCodecList.cpp
index 93478e9..3d58d4b 100644
--- a/media/libstagefright/MediaCodecList.cpp
+++ b/media/libstagefright/MediaCodecList.cpp
@@ -77,7 +77,8 @@
     return profilingNeeded;
 }
 
-OmxInfoBuilder sOmxInfoBuilder;
+OmxInfoBuilder sOmxInfoBuilder{true /* allowSurfaceEncoders */};
+OmxInfoBuilder sOmxNoSurfaceEncoderInfoBuilder{false /* allowSurfaceEncoders */};
 
 Mutex sCodec2InfoBuilderMutex;
 std::unique_ptr<MediaCodecListBuilderBase> sCodec2InfoBuilder;
@@ -98,7 +99,11 @@
     sp<PersistentSurface> surfaceTest =
         StagefrightPluginLoader::GetCCodecInstance()->createInputSurface();
     if (surfaceTest == nullptr) {
+        ALOGD("Allowing all OMX codecs");
         builders.push_back(&sOmxInfoBuilder);
+    } else {
+        ALOGD("Allowing only non-surface-encoder OMX codecs");
+        builders.push_back(&sOmxNoSurfaceEncoderInfoBuilder);
     }
     builders.push_back(GetCodec2InfoBuilder());
     return builders;
@@ -219,6 +224,21 @@
                 return info1 == nullptr
                         || (info2 != nullptr && info1->getRank() < info2->getRank());
             });
+
+    // remove duplicate entries
+    bool dedupe = property_get_bool("debug.stagefright.dedupe-codecs", true);
+    if (dedupe) {
+        std::set<std::string> codecsSeen;
+        for (auto it = mCodecInfos.begin(); it != mCodecInfos.end(); ) {
+            std::string codecName = (*it)->getCodecName();
+            if (codecsSeen.count(codecName) == 0) {
+                codecsSeen.emplace(codecName);
+                it++;
+            } else {
+                it = mCodecInfos.erase(it);
+            }
+        }
+    }
 }
 
 MediaCodecList::~MediaCodecList() {
@@ -268,10 +288,17 @@
 }
 
 ssize_t MediaCodecList::findCodecByName(const char *name) const {
+    Vector<AString> aliases;
     for (size_t i = 0; i < mCodecInfos.size(); ++i) {
         if (strcmp(mCodecInfos[i]->getCodecName(), name) == 0) {
             return i;
         }
+        mCodecInfos[i]->getAliases(&aliases);
+        for (const AString &alias : aliases) {
+            if (alias == name) {
+                return i;
+            }
+        }
     }
 
     return -ENOENT;
diff --git a/media/libstagefright/MediaCodecListWriter.cpp b/media/libstagefright/MediaCodecListWriter.cpp
index b32e470..c4fb199 100644
--- a/media/libstagefright/MediaCodecListWriter.cpp
+++ b/media/libstagefright/MediaCodecListWriter.cpp
@@ -37,6 +37,16 @@
             new MediaCodecInfoWriter(info.get()));
 }
 
+std::unique_ptr<MediaCodecInfoWriter>
+        MediaCodecListWriter::findMediaCodecInfo(const char *name) {
+    for (const sp<MediaCodecInfo> &info : mCodecInfos) {
+        if (!strcmp(info->getCodecName(), name)) {
+            return std::unique_ptr<MediaCodecInfoWriter>(new MediaCodecInfoWriter(info.get()));
+        }
+    }
+    return nullptr;
+}
+
 void MediaCodecListWriter::writeGlobalSettings(
         const sp<AMessage> &globalSettings) const {
     for (const std::pair<std::string, std::string> &kv : mGlobalSettings) {
diff --git a/media/libstagefright/OmxInfoBuilder.cpp b/media/libstagefright/OmxInfoBuilder.cpp
index 382c947..8910463 100644
--- a/media/libstagefright/OmxInfoBuilder.cpp
+++ b/media/libstagefright/OmxInfoBuilder.cpp
@@ -21,8 +21,8 @@
 #define OMX_ANDROID_COMPILE_AS_32BIT_ON_64BIT_PLATFORMS
 #endif
 
+#include <android-base/properties.h>
 #include <utils/Log.h>
-#include <cutils/properties.h>
 
 #include <media/stagefright/foundation/MediaDefs.h>
 #include <media/stagefright/OmxInfoBuilder.h>
@@ -53,7 +53,7 @@
 namespace /* unnamed */ {
 
 bool hasPrefix(const hidl_string& s, const char* prefix) {
-    return strncmp(s.c_str(), prefix, strlen(prefix)) == 0;
+    return strncasecmp(s.c_str(), prefix, strlen(prefix)) == 0;
 }
 
 status_t queryCapabilities(
@@ -87,7 +87,8 @@
 
 }  // unnamed namespace
 
-OmxInfoBuilder::OmxInfoBuilder() {
+OmxInfoBuilder::OmxInfoBuilder(bool allowSurfaceEncoders)
+    : mAllowSurfaceEncoders(allowSurfaceEncoders) {
 }
 
 status_t OmxInfoBuilder::buildMediaCodecList(MediaCodecListWriter* writer) {
@@ -135,81 +136,80 @@
     // Convert roles to lists of codecs
 
     // codec name -> index into swCodecs/hwCodecs
-    std::map<hidl_string, std::unique_ptr<MediaCodecInfoWriter>>
-            swCodecName2Info, hwCodecName2Info;
+    std::map<hidl_string, std::unique_ptr<MediaCodecInfoWriter>> codecName2Info;
 
-    char rank[PROPERTY_VALUE_MAX];
-    uint32_t defaultRank = 0x100;
-    if (property_get("debug.stagefright.omx_default_rank", rank, nullptr)) {
-        defaultRank = std::strtoul(rank, nullptr, 10);
-    }
+    uint32_t defaultRank =
+        ::android::base::GetUintProperty("debug.stagefright.omx_default_rank", 0x100u);
+    uint32_t defaultSwAudioRank =
+        ::android::base::GetUintProperty("debug.stagefright.omx_default_rank.sw-audio", 0x10u);
+    uint32_t defaultSwOtherRank =
+        ::android::base::GetUintProperty("debug.stagefright.omx_default_rank.sw-other", 0x210u);
+
     for (const IOmxStore::RoleInfo& role : roles) {
         const hidl_string& typeName = role.type;
         bool isEncoder = role.isEncoder;
-        bool preferPlatformNodes = role.preferPlatformNodes;
-        // If preferPlatformNodes is true, hardware nodes must be added after
-        // platform (software) nodes. hwCodecs is used to hold hardware nodes
-        // that need to be added after software nodes for the same role.
-        std::vector<const IOmxStore::NodeInfo*> hwCodecs;
-        for (const IOmxStore::NodeInfo& node : role.nodes) {
+        bool isAudio = hasPrefix(role.type, "audio/");
+        bool isVideoOrImage = hasPrefix(role.type, "video/") || hasPrefix(role.type, "image/");
+
+        for (const IOmxStore::NodeInfo &node : role.nodes) {
             const hidl_string& nodeName = node.name;
+
+            // currently image and video encoders use surface input
+            if (!mAllowSurfaceEncoders && isVideoOrImage && isEncoder) {
+                ALOGD("disabling %s for media type %s because we are not using OMX input surface",
+                        nodeName.c_str(), role.type.c_str());
+                continue;
+            }
+
             bool isSoftware = hasPrefix(nodeName, "OMX.google");
-            MediaCodecInfoWriter* info;
-            if (isSoftware) {
-                auto c2i = swCodecName2Info.find(nodeName);
-                if (c2i == swCodecName2Info.end()) {
-                    // Create a new MediaCodecInfo for a new node.
-                    c2i = swCodecName2Info.insert(std::make_pair(
-                            nodeName, writer->addMediaCodecInfo())).first;
-                    info = c2i->second.get();
-                    info->setName(nodeName.c_str());
-                    info->setOwner(node.owner.c_str());
-                    info->setAttributes(
-                            // all OMX codecs are vendor codecs (in the vendor partition), but
-                            // treat OMX.google codecs as non-hardware-accelerated and  non-vendor
-                            (isEncoder ? MediaCodecInfo::kFlagIsEncoder : 0));
-                    info->setRank(defaultRank);
-                } else {
-                    // The node has been seen before. Simply retrieve the
-                    // existing MediaCodecInfoWriter.
-                    info = c2i->second.get();
-                }
-            } else {
-                auto c2i = hwCodecName2Info.find(nodeName);
-                if (c2i == hwCodecName2Info.end()) {
-                    // Create a new MediaCodecInfo for a new node.
-                    if (!preferPlatformNodes) {
-                        c2i = hwCodecName2Info.insert(std::make_pair(
-                                nodeName, writer->addMediaCodecInfo())).first;
-                        info = c2i->second.get();
-                        info->setName(nodeName.c_str());
-                        info->setOwner(node.owner.c_str());
-                        typename std::underlying_type<MediaCodecInfo::Attributes>::type attrs =
-                            MediaCodecInfo::kFlagIsVendor;
-                        if (isEncoder) {
-                            attrs |= MediaCodecInfo::kFlagIsEncoder;
-                        }
-                        if (std::count_if(
-                                node.attributes.begin(), node.attributes.end(),
-                                [](const IOmxStore::Attribute &i) -> bool {
-                                    return i.key == "attribute::software-codec";
-                                                                          })) {
-                            attrs |= MediaCodecInfo::kFlagIsHardwareAccelerated;
-                        }
-                        info->setAttributes(attrs);
-                        info->setRank(defaultRank);
-                    } else {
-                        // If preferPlatformNodes is true, this node must be
-                        // added after all software nodes.
-                        hwCodecs.push_back(&node);
-                        continue;
+            uint32_t rank = isSoftware
+                    ? (isAudio ? defaultSwAudioRank : defaultSwOtherRank)
+                    : defaultRank;
+            // get rank from IOmxStore via attribute
+            for (const IOmxStore::Attribute& attribute : node.attributes) {
+                if (attribute.key == "rank") {
+                    uint32_t oldRank = rank;
+                    char dummy;
+                    if (sscanf(attribute.value.c_str(), "%u%c", &rank, &dummy) != 1) {
+                        rank = oldRank;
                     }
-                } else {
-                    // The node has been seen before. Simply retrieve the
-                    // existing MediaCodecInfoWriter.
-                    info = c2i->second.get();
+                    break;
                 }
             }
+
+            MediaCodecInfoWriter* info;
+            auto c2i = codecName2Info.find(nodeName);
+            if (c2i == codecName2Info.end()) {
+                // Create a new MediaCodecInfo for a new node.
+                c2i = codecName2Info.insert(std::make_pair(
+                        nodeName, writer->addMediaCodecInfo())).first;
+                info = c2i->second.get();
+                info->setName(nodeName.c_str());
+                info->setOwner(node.owner.c_str());
+                info->setRank(rank);
+
+                typename std::underlying_type<MediaCodecInfo::Attributes>::type attrs = 0;
+                // all OMX codecs are vendor codecs (in the vendor partition), but
+                // treat OMX.google codecs as non-hardware-accelerated and non-vendor
+                if (!isSoftware) {
+                    attrs |= MediaCodecInfo::kFlagIsVendor;
+                    if (std::count_if(
+                            node.attributes.begin(), node.attributes.end(),
+                            [](const IOmxStore::Attribute &i) -> bool {
+                                return i.key == "attribute::software-codec";
+                                                                      })) {
+                        attrs |= MediaCodecInfo::kFlagIsHardwareAccelerated;
+                    }
+                }
+                if (isEncoder) {
+                    attrs |= MediaCodecInfo::kFlagIsEncoder;
+                }
+                info->setAttributes(attrs);
+            } else {
+                // The node has been seen before. Simply retrieve the
+                // existing MediaCodecInfoWriter.
+                info = c2i->second.get();
+            }
             std::unique_ptr<MediaCodecInfo::CapabilitiesWriter> caps =
                     info->addMediaType(typeName.c_str());
             if (queryCapabilities(
@@ -219,54 +219,8 @@
                 info->removeMediaType(typeName.c_str());
             }
         }
-
-        // If preferPlatformNodes is true, hardware nodes will not have been
-        // added in the loop above, but rather saved in hwCodecs. They are
-        // going to be added here.
-        if (preferPlatformNodes) {
-            for (const IOmxStore::NodeInfo *node : hwCodecs) {
-                MediaCodecInfoWriter* info;
-                const hidl_string& nodeName = node->name;
-                auto c2i = hwCodecName2Info.find(nodeName);
-                if (c2i == hwCodecName2Info.end()) {
-                    // Create a new MediaCodecInfo for a new node.
-                    c2i = hwCodecName2Info.insert(std::make_pair(
-                            nodeName, writer->addMediaCodecInfo())).first;
-                    info = c2i->second.get();
-                    info->setName(nodeName.c_str());
-                    info->setOwner(node->owner.c_str());
-                    typename std::underlying_type<MediaCodecInfo::Attributes>::type attrs =
-                        MediaCodecInfo::kFlagIsVendor;
-                    if (isEncoder) {
-                        attrs |= MediaCodecInfo::kFlagIsEncoder;
-                    }
-                    if (std::count_if(
-                            node->attributes.begin(), node->attributes.end(),
-                            [](const IOmxStore::Attribute &i) -> bool {
-                                return i.key == "attribute::software-codec";
-                                                                      })) {
-                        attrs |= MediaCodecInfo::kFlagIsHardwareAccelerated;
-                    }
-                    info->setRank(defaultRank);
-                } else {
-                    // The node has been seen before. Simply retrieve the
-                    // existing MediaCodecInfoWriter.
-                    info = c2i->second.get();
-                }
-                std::unique_ptr<MediaCodecInfo::CapabilitiesWriter> caps =
-                        info->addMediaType(typeName.c_str());
-                if (queryCapabilities(
-                        *node, typeName.c_str(), isEncoder, caps.get()) != OK) {
-                    ALOGW("Fail to add media type %s to codec %s "
-                          "after software codecs",
-                          typeName.c_str(), nodeName.c_str());
-                    info->removeMediaType(typeName.c_str());
-                }
-            }
-        }
     }
     return OK;
 }
 
 }  // namespace android
-
diff --git a/media/libstagefright/data/media_codecs_google_c2_audio.xml b/media/libstagefright/data/media_codecs_google_c2_audio.xml
index 88cd08d..f664395 100644
--- a/media/libstagefright/data/media_codecs_google_c2_audio.xml
+++ b/media/libstagefright/data/media_codecs_google_c2_audio.xml
@@ -17,51 +17,61 @@
 <Included>
     <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" />
@@ -69,24 +79,28 @@
     </Decoders>
     <Encoders>
         <MediaCodec name="c2.android.aac.encoder" type="audio/mp4a-latm">
+            <Alias name="OMX.google.aac.decoder" />
             <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.decoder" />
             <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.decoder" />
             <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.decoder" />
             <Limit name="channel-count" max="2" />
             <Limit name="sample-rate" ranges="1-655350" />
             <Limit name="bitrate" range="1-21000000" />
diff --git a/media/libstagefright/data/media_codecs_google_c2_telephony.xml b/media/libstagefright/data/media_codecs_google_c2_telephony.xml
index d1055b3..950b092 100644
--- a/media/libstagefright/data/media_codecs_google_c2_telephony.xml
+++ b/media/libstagefright/data/media_codecs_google_c2_telephony.xml
@@ -17,6 +17,7 @@
 <Included>
     <Decoders>
         <MediaCodec name="c2.android.gsm.decoder" type="audio/gsm">
+            <Alias name="OMX.google.gsm.decoder" />
             <Limit name="channel-count" max="1" />
             <Limit name="sample-rate" ranges="8000" />
             <Limit name="bitrate" range="13000" />
diff --git a/media/libstagefright/data/media_codecs_google_c2_tv.xml b/media/libstagefright/data/media_codecs_google_c2_tv.xml
index fa082c7..1b00dc9 100644
--- a/media/libstagefright/data/media_codecs_google_c2_tv.xml
+++ b/media/libstagefright/data/media_codecs_google_c2_tv.xml
@@ -17,6 +17,7 @@
 <Included>
     <Decoders>
         <MediaCodec name="c2.android.mpeg2.decoder" type="video/mpeg2">
+            <Alias name="OMX.google.mpeg2.decoder" />
             <!-- profiles and levels:  ProfileMain : LevelHL -->
             <Limit name="size" min="16x16" max="1920x1088" />
             <Limit name="alignment" value="2x2" />
diff --git a/media/libstagefright/data/media_codecs_google_c2_video.xml b/media/libstagefright/data/media_codecs_google_c2_video.xml
index c49789e..5c2d96d 100644
--- a/media/libstagefright/data/media_codecs_google_c2_video.xml
+++ b/media/libstagefright/data/media_codecs_google_c2_video.xml
@@ -17,6 +17,7 @@
 <Included>
     <Decoders>
         <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" />
@@ -26,6 +27,7 @@
             <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" />
@@ -34,6 +36,7 @@
             <Feature name="adaptive-playback" />
         </MediaCodec>
         <MediaCodec name="c2.android.avc.decoder" type="video/avc">
+            <Alias name="OMX.google.h264.decoder" />
             <!-- profiles and levels:  ProfileHigh : Level52 -->
             <Limit name="size" min="2x2" max="4080x4080" />
             <Limit name="alignment" value="2x2" />
@@ -44,6 +47,7 @@
             <Feature name="adaptive-playback" />
         </MediaCodec>
         <MediaCodec name="c2.android.hevc.decoder" type="video/hevc">
+            <Alias name="OMX.google.hevc.decoder" />
             <!-- profiles and levels:  ProfileMain : MainTierLevel51 -->
             <Limit name="size" min="2x2" max="4096x4096" />
             <Limit name="alignment" value="2x2" />
@@ -54,6 +58,7 @@
             <Feature name="adaptive-playback" />
         </MediaCodec>
         <MediaCodec name="c2.android.vp8.decoder" type="video/x-vnd.on2.vp8">
+            <Alias name="OMX.google.vp8.decoder" />
             <Limit name="size" min="2x2" max="2048x2048" />
             <Limit name="alignment" value="2x2" />
             <Limit name="block-size" value="16x16" />
@@ -63,6 +68,7 @@
             <Feature name="adaptive-playback" />
         </MediaCodec>
         <MediaCodec name="c2.android.vp9.decoder" type="video/x-vnd.on2.vp9">
+            <Alias name="OMX.google.vp9.decoder" />
             <Limit name="size" min="2x2" max="2048x2048" />
             <Limit name="alignment" value="2x2" />
             <Limit name="block-size" value="16x16" />
@@ -84,12 +90,14 @@
 
     <Encoders>
         <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.avc.encoder" type="video/avc">
+            <Alias name="OMX.google.h264.encoder" />
             <!-- profiles and levels:  ProfileBaseline : Level41 -->
             <Limit name="size" min="16x16" max="2048x2048" />
             <Limit name="alignment" value="2x2" />
@@ -100,6 +108,7 @@
             <Feature name="intra-refresh" />
         </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" />
@@ -108,6 +117,7 @@
             <Limit name="bitrate" range="1-64000" />
         </MediaCodec>
         <MediaCodec name="c2.android.vp8.encoder" type="video/x-vnd.on2.vp8">
+            <Alias name="OMX.google.vp8.encoder" />
             <!-- profiles and levels:  ProfileMain : Level_Version0-3 -->
             <Limit name="size" min="2x2" max="2048x2048" />
             <Limit name="alignment" value="2x2" />
@@ -118,6 +128,7 @@
             <Feature name="bitrate-modes" value="VBR,CBR" />
         </MediaCodec>
         <MediaCodec name="c2.android.vp9.encoder" type="video/x-vnd.on2.vp9">
+            <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" />
diff --git a/media/libstagefright/include/media/stagefright/MediaCodecListWriter.h b/media/libstagefright/include/media/stagefright/MediaCodecListWriter.h
index 59f57c7..f53b23e 100644
--- a/media/libstagefright/include/media/stagefright/MediaCodecListWriter.h
+++ b/media/libstagefright/include/media/stagefright/MediaCodecListWriter.h
@@ -48,6 +48,13 @@
      * added `MediaCodecInfo` object.
      */
     std::unique_ptr<MediaCodecInfoWriter> addMediaCodecInfo();
+    /**
+     * Find an existing `MediaCodecInfo` object for a codec name and return a
+     * `MediaCodecInfoWriter` object associated with the found added `MediaCodecInfo`.
+     *
+     * @return The `MediaCodecInfoWriter` object if found, or nullptr if not found.
+     */
+    std::unique_ptr<MediaCodecInfoWriter> findMediaCodecInfo(const char *codecName);
 private:
     MediaCodecListWriter() = default;
 
diff --git a/media/libstagefright/include/media/stagefright/OmxInfoBuilder.h b/media/libstagefright/include/media/stagefright/OmxInfoBuilder.h
index 28f6094..1410a16 100644
--- a/media/libstagefright/include/media/stagefright/OmxInfoBuilder.h
+++ b/media/libstagefright/include/media/stagefright/OmxInfoBuilder.h
@@ -23,8 +23,11 @@
 namespace android {
 
 class OmxInfoBuilder : public MediaCodecListBuilderBase {
+private:
+    bool mAllowSurfaceEncoders; // allow surface encoders
+
 public:
-    OmxInfoBuilder();
+    explicit OmxInfoBuilder(bool allowSurfaceEncoders);
     ~OmxInfoBuilder() override = default;
     status_t buildMediaCodecList(MediaCodecListWriter* writer) override;
 };
diff --git a/media/libstagefright/omx/1.0/OmxStore.cpp b/media/libstagefright/omx/1.0/OmxStore.cpp
index 447af6f..2e041e3 100644
--- a/media/libstagefright/omx/1.0/OmxStore.cpp
+++ b/media/libstagefright/omx/1.0/OmxStore.cpp
@@ -61,10 +61,7 @@
         role.role = rolePair.first;
         role.type = rolePair.second.type;
         role.isEncoder = rolePair.second.isEncoder;
-        // TODO: Currently, preferPlatformNodes information is not available in
-        // the xml file. Once we have a way to provide this information, it
-        // should be parsed properly.
-        role.preferPlatformNodes = rolePair.first.compare(0, 5, "audio") == 0;
+        role.preferPlatformNodes = false; // deprecated and ignored, using rank instead
         hidl_vec<NodeInfo>& nodeList = role.nodes;
         nodeList.resize(rolePair.second.nodeList.size());
         size_t j = 0;
diff --git a/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp b/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp
index 6e541ba..7046f61 100644
--- a/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp
+++ b/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp
@@ -502,6 +502,7 @@
     const char *name = nullptr;
     const char *type = nullptr;
     const char *update = nullptr;
+    const char *rank = nullptr;
 
     size_t i = 0;
     while (attrs[i] != nullptr) {
@@ -523,6 +524,12 @@
                 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]);
             return BAD_VALUE;
@@ -579,6 +586,15 @@
         }
     }
 
+    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;
+    }
+
     return OK;
 }
 
@@ -1035,6 +1051,7 @@
         const auto& codecName = codec.first;
         bool isEncoder = codec.second.isEncoder;
         size_t order = codec.second.order;
+        std::string rank = codec.second.rank;
         const auto& typeMap = codec.second.typeMap;
         for (const auto& type : typeMap) {
             const auto& typeName = type.first;
@@ -1090,6 +1107,9 @@
                     nodeInfo.attributeList.push_back(Attribute{quirk, "present"});
                 }
             }
+            if (!rank.empty()) {
+                nodeInfo.attributeList.push_back(Attribute{"rank", rank});
+            }
             nodeList->insert(std::make_pair(
                     std::move(order), std::move(nodeInfo)));
         }
diff --git a/media/libstagefright/xmlparser/include/media/stagefright/xmlparser/MediaCodecsXmlParser.h b/media/libstagefright/xmlparser/include/media/stagefright/xmlparser/MediaCodecsXmlParser.h
index fd949da..7a986b7 100644
--- a/media/libstagefright/xmlparser/include/media/stagefright/xmlparser/MediaCodecsXmlParser.h
+++ b/media/libstagefright/xmlparser/include/media/stagefright/xmlparser/MediaCodecsXmlParser.h
@@ -66,6 +66,7 @@
         QuirkSet quirkSet; ///< Set of quirks requested by this codec
         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.
     };
 
     typedef std::pair<std::string, CodecProperties> Codec;