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-rw-r--r--dom/media/fmp4/MP4Decoder.cpp307
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diff --git a/dom/media/fmp4/MP4Decoder.cpp b/dom/media/fmp4/MP4Decoder.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "MP4Decoder.h"
+#include "MediaContentType.h"
+#include "MediaDecoderStateMachine.h"
+#include "MP4Demuxer.h"
+#include "mozilla/Preferences.h"
+#include "nsCharSeparatedTokenizer.h"
+#include "mozilla/CDMProxy.h"
+#include "mozilla/Logging.h"
+#include "mozilla/SharedThreadPool.h"
+#include "nsMimeTypes.h"
+#include "VideoUtils.h"
+
+#ifdef XP_WIN
+#include "mozilla/WindowsVersion.h"
+#endif
+#ifdef MOZ_WIDGET_ANDROID
+#include "nsIGfxInfo.h"
+#endif
+#include "mozilla/layers/LayersTypes.h"
+
+#include "PDMFactory.h"
+
+namespace mozilla {
+
+MP4Decoder::MP4Decoder(MediaDecoderOwner* aOwner)
+ : MediaDecoder(aOwner)
+{
+}
+
+MediaDecoderStateMachine* MP4Decoder::CreateStateMachine()
+{
+ mReader =
+ new MediaFormatReader(this,
+ new MP4Demuxer(GetResource()),
+ GetVideoFrameContainer());
+
+ return new MediaDecoderStateMachine(this, mReader);
+}
+
+static bool
+IsWhitelistedH264Codec(const nsAString& aCodec)
+{
+ int16_t profile = 0, level = 0;
+
+ if (!ExtractH264CodecDetails(aCodec, profile, level)) {
+ return false;
+ }
+
+#ifdef XP_WIN
+ // Disable 4k video on windows vista since it performs poorly.
+ if (!IsWin7OrLater() &&
+ level >= H264_LEVEL_5) {
+ return false;
+ }
+#endif
+
+ // Just assume what we can play on all platforms the codecs/formats that
+ // WMF can play, since we don't have documentation about what other
+ // platforms can play... According to the WMF documentation:
+ // http://msdn.microsoft.com/en-us/library/windows/desktop/dd797815%28v=vs.85%29.aspx
+ // "The Media Foundation H.264 video decoder is a Media Foundation Transform
+ // that supports decoding of Baseline, Main, and High profiles, up to level
+ // 5.1.". We also report that we can play Extended profile, as there are
+ // bitstreams that are Extended compliant that are also Baseline compliant.
+ return level >= H264_LEVEL_1 &&
+ level <= H264_LEVEL_5_1 &&
+ (profile == H264_PROFILE_BASE ||
+ profile == H264_PROFILE_MAIN ||
+ profile == H264_PROFILE_EXTENDED ||
+ profile == H264_PROFILE_HIGH);
+}
+
+/* static */
+bool
+MP4Decoder::CanHandleMediaType(const MediaContentType& aType,
+ DecoderDoctorDiagnostics* aDiagnostics)
+{
+ if (!IsEnabled()) {
+ return false;
+ }
+
+ // Whitelist MP4 types, so they explicitly match what we encounter on
+ // the web, as opposed to what we use internally (i.e. what our demuxers
+ // etc output).
+ const bool isMP4Audio = aType.GetMIMEType().EqualsASCII("audio/mp4") ||
+ aType.GetMIMEType().EqualsASCII("audio/x-m4a");
+ const bool isMP4Video =
+ // On B2G, treat 3GPP as MP4 when Gonk PDM is available.
+#ifdef MOZ_GONK_MEDIACODEC
+ aType.GetMIMEType().EqualsASCII(VIDEO_3GPP) ||
+#endif
+ aType.GetMIMEType().EqualsASCII("video/mp4") ||
+ aType.GetMIMEType().EqualsASCII("video/quicktime") ||
+ aType.GetMIMEType().EqualsASCII("video/x-m4v");
+ if (!isMP4Audio && !isMP4Video) {
+ return false;
+ }
+
+ nsTArray<UniquePtr<TrackInfo>> trackInfos;
+ if (aType.GetCodecs().IsEmpty()) {
+ // No codecs specified. Assume H.264
+ if (isMP4Audio) {
+ trackInfos.AppendElement(
+ CreateTrackInfoWithMIMETypeAndContentTypeExtraParameters(
+ NS_LITERAL_CSTRING("audio/mp4a-latm"), aType));
+ } else {
+ MOZ_ASSERT(isMP4Video);
+ trackInfos.AppendElement(
+ CreateTrackInfoWithMIMETypeAndContentTypeExtraParameters(
+ NS_LITERAL_CSTRING("video/avc"), aType));
+ }
+ } else {
+ // Verify that all the codecs specified are ones that we expect that
+ // we can play.
+ nsTArray<nsString> codecs;
+ if (!ParseCodecsString(aType.GetCodecs(), codecs)) {
+ return false;
+ }
+ for (const nsString& codec : codecs) {
+ if (IsAACCodecString(codec)) {
+ trackInfos.AppendElement(
+ CreateTrackInfoWithMIMETypeAndContentTypeExtraParameters(
+ NS_LITERAL_CSTRING("audio/mp4a-latm"), aType));
+ continue;
+ }
+ if (codec.EqualsLiteral("mp3")) {
+ trackInfos.AppendElement(
+ CreateTrackInfoWithMIMETypeAndContentTypeExtraParameters(
+ NS_LITERAL_CSTRING("audio/mpeg"), aType));
+ continue;
+ }
+ if (codec.EqualsLiteral("opus")) {
+ trackInfos.AppendElement(
+ CreateTrackInfoWithMIMETypeAndContentTypeExtraParameters(
+ NS_LITERAL_CSTRING("audio/opus"), aType));
+ continue;
+ }
+ if (codec.EqualsLiteral("flac")) {
+ trackInfos.AppendElement(
+ CreateTrackInfoWithMIMETypeAndContentTypeExtraParameters(
+ NS_LITERAL_CSTRING("audio/flac"), aType));
+ continue;
+ }
+ // Note: Only accept H.264 in a video content type, not in an audio
+ // content type.
+ if (IsWhitelistedH264Codec(codec) && isMP4Video) {
+ trackInfos.AppendElement(
+ CreateTrackInfoWithMIMETypeAndContentTypeExtraParameters(
+ NS_LITERAL_CSTRING("video/avc"), aType));
+ continue;
+ }
+ // Some unsupported codec.
+ return false;
+ }
+ }
+
+ // Verify that we have a PDM that supports the whitelisted types.
+ RefPtr<PDMFactory> platform = new PDMFactory();
+ for (const auto& trackInfo : trackInfos) {
+ if (!trackInfo || !platform->Supports(*trackInfo, aDiagnostics)) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/* static */
+bool
+MP4Decoder::IsH264(const nsACString& aMimeType)
+{
+ return aMimeType.EqualsLiteral("video/mp4") ||
+ aMimeType.EqualsLiteral("video/avc");
+}
+
+/* static */
+bool
+MP4Decoder::IsAAC(const nsACString& aMimeType)
+{
+ return aMimeType.EqualsLiteral("audio/mp4a-latm");
+}
+
+/* static */
+bool
+MP4Decoder::IsEnabled()
+{
+ return Preferences::GetBool("media.mp4.enabled", true);
+}
+
+// sTestH264ExtraData represents the content of the avcC atom found in
+// an AVC1 h264 video. It contains the H264 SPS and PPS NAL.
+// the structure of the avcC atom is as follow:
+// write(0x1); // version, always 1
+// write(sps[0].data[1]); // profile
+// write(sps[0].data[2]); // compatibility
+// write(sps[0].data[3]); // level
+// write(0xFC | 3); // reserved (6 bits), NULA length size - 1 (2 bits)
+// write(0xE0 | 1); // reserved (3 bits), num of SPS (5 bits)
+// write_word(sps[0].size); // 2 bytes for length of SPS
+// for(size_t i=0 ; i < sps[0].size ; ++i)
+// write(sps[0].data[i]); // data of SPS
+// write(&b, pps.size()); // num of PPS
+// for(size_t i=0 ; i < pps.size() ; ++i) {
+// write_word(pps[i].size); // 2 bytes for length of PPS
+// for(size_t j=0 ; j < pps[i].size ; ++j)
+// write(pps[i].data[j]); // data of PPS
+// }
+// }
+// here we have a h264 Baseline, 640x360
+// We use a 640x360 extradata, as some video framework (Apple VT) will never
+// attempt to use hardware decoding for small videos.
+static const uint8_t sTestH264ExtraData[] = {
+ 0x01, 0x42, 0xc0, 0x1e, 0xff, 0xe1, 0x00, 0x17, 0x67, 0x42,
+ 0xc0, 0x1e, 0xbb, 0x40, 0x50, 0x17, 0xfc, 0xb8, 0x08, 0x80,
+ 0x00, 0x00, 0x32, 0x00, 0x00, 0x0b, 0xb5, 0x07, 0x8b, 0x17,
+ 0x50, 0x01, 0x00, 0x04, 0x68, 0xce, 0x32, 0xc8
+};
+
+static already_AddRefed<MediaDataDecoder>
+CreateTestH264Decoder(layers::KnowsCompositor* aKnowsCompositor,
+ VideoInfo& aConfig,
+ TaskQueue* aTaskQueue)
+{
+ aConfig.mMimeType = "video/avc";
+ aConfig.mId = 1;
+ aConfig.mDuration = 40000;
+ aConfig.mMediaTime = 0;
+ aConfig.mImage = aConfig.mDisplay = nsIntSize(640, 360);
+ aConfig.mExtraData = new MediaByteBuffer();
+ aConfig.mExtraData->AppendElements(sTestH264ExtraData,
+ MOZ_ARRAY_LENGTH(sTestH264ExtraData));
+
+ RefPtr<PDMFactory> platform = new PDMFactory();
+ RefPtr<MediaDataDecoder> decoder(platform->CreateDecoder({ aConfig, aTaskQueue, aKnowsCompositor }));
+
+ return decoder.forget();
+}
+
+/* static */ already_AddRefed<dom::Promise>
+MP4Decoder::IsVideoAccelerated(layers::KnowsCompositor* aKnowsCompositor, nsIGlobalObject* aParent)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+
+ ErrorResult rv;
+ RefPtr<dom::Promise> promise;
+ promise = dom::Promise::Create(aParent, rv);
+ if (rv.Failed()) {
+ rv.SuppressException();
+ return nullptr;
+ }
+
+ RefPtr<TaskQueue> taskQueue =
+ new TaskQueue(GetMediaThreadPool(MediaThreadType::PLATFORM_DECODER));
+ VideoInfo config;
+ RefPtr<MediaDataDecoder> decoder(CreateTestH264Decoder(aKnowsCompositor, config, taskQueue));
+ if (!decoder) {
+ taskQueue->BeginShutdown();
+ taskQueue->AwaitShutdownAndIdle();
+ promise->MaybeResolve(NS_LITERAL_STRING("No; Failed to create H264 decoder"));
+ return promise.forget();
+ }
+
+ decoder->Init()
+ ->Then(AbstractThread::MainThread(), __func__,
+ [promise, decoder, taskQueue] (TrackInfo::TrackType aTrack) {
+ nsCString failureReason;
+ bool ok = decoder->IsHardwareAccelerated(failureReason);
+ nsAutoString result;
+ if (ok) {
+ result.AssignLiteral("Yes");
+ } else {
+ result.AssignLiteral("No");
+ }
+ if (failureReason.Length()) {
+ result.AppendLiteral("; ");
+ AppendUTF8toUTF16(failureReason, result);
+ }
+ decoder->Shutdown();
+ taskQueue->BeginShutdown();
+ taskQueue->AwaitShutdownAndIdle();
+ promise->MaybeResolve(result);
+ },
+ [promise, decoder, taskQueue] (MediaResult aError) {
+ decoder->Shutdown();
+ taskQueue->BeginShutdown();
+ taskQueue->AwaitShutdownAndIdle();
+ promise->MaybeResolve(NS_LITERAL_STRING("No; Failed to initialize H264 decoder"));
+ });
+
+ return promise.forget();
+}
+
+void
+MP4Decoder::GetMozDebugReaderData(nsAString& aString)
+{
+ if (mReader) {
+ mReader->GetMozDebugReaderData(aString);
+ }
+}
+
+} // namespace mozilla