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160 lines
5.0 KiB
160 lines
5.0 KiB
/*
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* Copyright 2017, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "RemoteMediaExtractor"
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#include <utils/Log.h>
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#include <binder/IPCThreadState.h>
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#include <media/stagefright/InterfaceUtils.h>
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#include <media/MediaAnalyticsItem.h>
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#include <media/MediaSource.h>
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#include <media/stagefright/RemoteMediaExtractor.h>
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// still doing some on/off toggling here.
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#define MEDIA_LOG 1
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namespace android {
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// key for media statistics
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static const char *kKeyExtractor = "extractor";
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// attrs for media statistics
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// NB: these are matched with public Java API constants defined
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// in frameworks/base/media/java/android/media/MediaExtractor.java
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// These must be kept synchronized with the constants there.
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static const char *kExtractorFormat = "android.media.mediaextractor.fmt";
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static const char *kExtractorMime = "android.media.mediaextractor.mime";
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static const char *kExtractorTracks = "android.media.mediaextractor.ntrk";
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RemoteMediaExtractor::RemoteMediaExtractor(
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MediaExtractor *extractor,
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const sp<DataSource> &source,
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const sp<RefBase> &plugin)
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:mExtractor(extractor),
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mSource(source),
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mExtractorPlugin(plugin) {
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mAnalyticsItem = nullptr;
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if (MEDIA_LOG) {
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mAnalyticsItem = MediaAnalyticsItem::create(kKeyExtractor);
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// we're in the extractor service, we want to attribute to the app
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// that invoked us.
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int uid = IPCThreadState::self()->getCallingUid();
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mAnalyticsItem->setUid(uid);
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// track the container format (mpeg, aac, wvm, etc)
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size_t ntracks = extractor->countTracks();
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mAnalyticsItem->setCString(kExtractorFormat, extractor->name());
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// tracks (size_t)
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mAnalyticsItem->setInt32(kExtractorTracks, ntracks);
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// metadata
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MetaDataBase pMetaData;
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if (extractor->getMetaData(pMetaData) == OK) {
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String8 xx = pMetaData.toString();
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// 'titl' -- but this verges into PII
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// 'mime'
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const char *mime = nullptr;
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if (pMetaData.findCString(kKeyMIMEType, &mime)) {
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mAnalyticsItem->setCString(kExtractorMime, mime);
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}
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// what else is interesting and not already available?
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}
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}
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}
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RemoteMediaExtractor::~RemoteMediaExtractor() {
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delete mExtractor;
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mSource->close();
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mSource.clear();
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mExtractorPlugin = nullptr;
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// log the current record, provided it has some information worth recording
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if (MEDIA_LOG) {
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if (mAnalyticsItem != nullptr) {
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if (mAnalyticsItem->count() > 0) {
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mAnalyticsItem->selfrecord();
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}
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}
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}
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if (mAnalyticsItem != nullptr) {
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delete mAnalyticsItem;
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mAnalyticsItem = nullptr;
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}
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}
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size_t RemoteMediaExtractor::countTracks() {
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return mExtractor->countTracks();
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}
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sp<IMediaSource> RemoteMediaExtractor::getTrack(size_t index) {
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MediaTrack *source = mExtractor->getTrack(index);
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return (source == nullptr)
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? nullptr : CreateIMediaSourceFromMediaSourceBase(this, source, mExtractorPlugin);
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}
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sp<MetaData> RemoteMediaExtractor::getTrackMetaData(size_t index, uint32_t flags) {
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sp<MetaData> meta = new MetaData();
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if (mExtractor->getTrackMetaData(*meta.get(), index, flags) == OK) {
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return meta;
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}
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return nullptr;
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}
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sp<MetaData> RemoteMediaExtractor::getMetaData() {
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sp<MetaData> meta = new MetaData();
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if (mExtractor->getMetaData(*meta.get()) == OK) {
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return meta;
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}
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return nullptr;
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}
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status_t RemoteMediaExtractor::getMetrics(Parcel *reply) {
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if (mAnalyticsItem == nullptr || reply == nullptr) {
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return UNKNOWN_ERROR;
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}
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mAnalyticsItem->writeToParcel(reply);
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return OK;
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}
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uint32_t RemoteMediaExtractor::flags() const {
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return mExtractor->flags();
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}
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status_t RemoteMediaExtractor::setMediaCas(const HInterfaceToken &casToken) {
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return mExtractor->setMediaCas((uint8_t*)casToken.data(), casToken.size());
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}
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const char * RemoteMediaExtractor::name() {
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return mExtractor->name();
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}
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////////////////////////////////////////////////////////////////////////////////
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// static
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sp<IMediaExtractor> RemoteMediaExtractor::wrap(
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MediaExtractor *extractor,
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const sp<DataSource> &source,
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const sp<RefBase> &plugin) {
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if (extractor == nullptr) {
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return nullptr;
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}
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return new RemoteMediaExtractor(extractor, source, plugin);
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}
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} // namespace android
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