mirror of
https://github.com/classilla/tenfourfox.git
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232 lines
6.9 KiB
C++
232 lines
6.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "MP4Decoder.h"
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#include "MediaDecoderStateMachine.h"
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#include "MediaFormatReader.h"
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#include "MP4Demuxer.h"
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#include "mozilla/Preferences.h"
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#include "nsCharSeparatedTokenizer.h"
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#ifdef MOZ_EME
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#include "mozilla/CDMProxy.h"
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#endif
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#include "mozilla/Logging.h"
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#include "nsMimeTypes.h"
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#include "nsContentTypeParser.h"
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#include "VideoUtils.h"
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#ifdef XP_WIN
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#include "mozilla/WindowsVersion.h"
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#endif
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#ifdef MOZ_WIDGET_ANDROID
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#include "nsIGfxInfo.h"
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#include "AndroidBridge.h"
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#endif
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#include "mozilla/layers/LayersTypes.h"
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#include "PDMFactory.h"
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namespace mozilla {
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#if defined(MOZ_GONK_MEDIACODEC) || defined(XP_WIN) || defined(MOZ_APPLEMEDIA) || defined(MOZ_FFMPEG)
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#define MP4_READER_DORMANT_HEURISTIC
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#else
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#undef MP4_READER_DORMANT_HEURISTIC
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#endif
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MP4Decoder::MP4Decoder(MediaDecoderOwner* aOwner)
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: MediaDecoder(aOwner)
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{
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#if defined(MP4_READER_DORMANT_HEURISTIC)
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mDormantSupported = Preferences::GetBool("media.decoder.heuristic.dormant.enabled", false);
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#endif
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}
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MediaDecoderStateMachine* MP4Decoder::CreateStateMachine()
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{
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MediaDecoderReader* reader =
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new MediaFormatReader(this,
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new MP4Demuxer(GetResource()),
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GetVideoFrameContainer());
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return new MediaDecoderStateMachine(this, reader);
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}
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static bool
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IsWhitelistedH264Codec(const nsAString& aCodec)
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{
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int16_t profile = 0, level = 0;
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if (!ExtractH264CodecDetails(aCodec, profile, level)) {
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return false;
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}
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#ifdef XP_WIN
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// Disable 4k video on windows vista since it performs poorly.
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if (!IsWin7OrLater() &&
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level >= H264_LEVEL_5) {
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return false;
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}
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#endif
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// Just assume what we can play on all platforms the codecs/formats that
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// WMF can play, since we don't have documentation about what other
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// platforms can play... According to the WMF documentation:
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// http://msdn.microsoft.com/en-us/library/windows/desktop/dd797815%28v=vs.85%29.aspx
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// "The Media Foundation H.264 video decoder is a Media Foundation Transform
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// that supports decoding of Baseline, Main, and High profiles, up to level
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// 5.1.". We also report that we can play Extended profile, as there are
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// bitstreams that are Extended compliant that are also Baseline compliant.
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return level >= H264_LEVEL_1 &&
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level <= H264_LEVEL_5_1 &&
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(profile == H264_PROFILE_BASE ||
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profile == H264_PROFILE_MAIN ||
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profile == H264_PROFILE_EXTENDED ||
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profile == H264_PROFILE_HIGH);
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}
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/* static */
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bool
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MP4Decoder::CanHandleMediaType(const nsACString& aMIMETypeExcludingCodecs,
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const nsAString& aCodecs)
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{
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if (!IsEnabled()) {
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return false;
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}
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// Whitelist MP4 types, so they explicitly match what we encounter on
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// the web, as opposed to what we use internally (i.e. what our demuxers
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// etc output).
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const bool isMP4Audio = aMIMETypeExcludingCodecs.EqualsASCII("audio/mp4") ||
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aMIMETypeExcludingCodecs.EqualsASCII("audio/x-m4a");
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const bool isMP4Video =
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// On B2G, treat 3GPP as MP4 when Gonk PDM is available.
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#ifdef MOZ_GONK_MEDIACODEC
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aMIMETypeExcludingCodecs.EqualsASCII(VIDEO_3GPP) ||
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#endif
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aMIMETypeExcludingCodecs.EqualsASCII("video/mp4") ||
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aMIMETypeExcludingCodecs.EqualsASCII("video/quicktime") ||
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aMIMETypeExcludingCodecs.EqualsASCII("video/x-m4v");
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if (!isMP4Audio && !isMP4Video) {
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return false;
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}
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nsTArray<nsCString> codecMimes;
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if (aCodecs.IsEmpty()) {
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// No codecs specified. Assume AAC/H.264
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if (isMP4Audio) {
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codecMimes.AppendElement(NS_LITERAL_CSTRING("audio/mp4a-latm"));
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} else {
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MOZ_ASSERT(isMP4Video);
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codecMimes.AppendElement(NS_LITERAL_CSTRING("video/avc"));
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}
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} else {
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// Verify that all the codecs specified are ones that we expect that
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// we can play.
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nsTArray<nsString> codecs;
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if (!ParseCodecsString(aCodecs, codecs)) {
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return false;
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}
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for (const nsString& codec : codecs) {
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if (IsAACCodecString(codec)) {
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codecMimes.AppendElement(NS_LITERAL_CSTRING("audio/mp4a-latm"));
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continue;
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}
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if (codec.EqualsLiteral("mp3")) {
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codecMimes.AppendElement(NS_LITERAL_CSTRING("audio/mpeg"));
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continue;
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}
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// Note: Only accept H.264 in a video content type, not in an audio
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// content type.
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if (IsWhitelistedH264Codec(codec) && isMP4Video) {
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codecMimes.AppendElement(NS_LITERAL_CSTRING("video/avc"));
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continue;
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}
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// Some unsupported codec.
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return false;
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}
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}
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// Verify that we have a PDM that supports the whitelisted types.
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PDMFactory::Init();
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RefPtr<PDMFactory> platform = new PDMFactory();
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for (const nsCString& codecMime : codecMimes) {
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if (!platform->SupportsMimeType(codecMime)) {
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return false;
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}
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}
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return true;
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}
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/* static */ bool
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MP4Decoder::CanHandleMediaType(const nsAString& aContentType)
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{
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nsContentTypeParser parser(aContentType);
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nsAutoString mimeType;
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nsresult rv = parser.GetType(mimeType);
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if (NS_FAILED(rv)) {
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return false;
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}
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nsString codecs;
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parser.GetParameter("codecs", codecs);
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return CanHandleMediaType(NS_ConvertUTF16toUTF8(mimeType), codecs);
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}
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/* static */
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bool
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MP4Decoder::IsEnabled()
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{
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return Preferences::GetBool("media.mp4.enabled");
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}
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static const uint8_t sTestH264ExtraData[] = {
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0x01, 0x64, 0x00, 0x0a, 0xff, 0xe1, 0x00, 0x17, 0x67, 0x64,
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0x00, 0x0a, 0xac, 0xd9, 0x44, 0x26, 0x84, 0x00, 0x00, 0x03,
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0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xc8, 0x3c, 0x48, 0x96,
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0x58, 0x01, 0x00, 0x06, 0x68, 0xeb, 0xe3, 0xcb, 0x22, 0xc0
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};
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static already_AddRefed<MediaDataDecoder>
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CreateTestH264Decoder(layers::LayersBackend aBackend,
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VideoInfo& aConfig)
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{
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aConfig.mMimeType = "video/avc";
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aConfig.mId = 1;
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aConfig.mDuration = 40000;
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aConfig.mMediaTime = 0;
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aConfig.mDisplay = nsIntSize(64, 64);
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aConfig.mImage = nsIntRect(0, 0, 64, 64);
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aConfig.mExtraData = new MediaByteBuffer();
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aConfig.mExtraData->AppendElements(sTestH264ExtraData,
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MOZ_ARRAY_LENGTH(sTestH264ExtraData));
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PDMFactory::Init();
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RefPtr<PDMFactory> platform = new PDMFactory();
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RefPtr<MediaDataDecoder> decoder(
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platform->CreateDecoder(aConfig, nullptr, nullptr, aBackend, nullptr));
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return decoder.forget();
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}
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/* static */ bool
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MP4Decoder::IsVideoAccelerated(layers::LayersBackend aBackend, nsACString& aFailureReason)
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{
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VideoInfo config;
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RefPtr<MediaDataDecoder> decoder(CreateTestH264Decoder(aBackend, config));
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if (!decoder) {
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aFailureReason.AssignLiteral("Failed to create H264 decoder");
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return false;
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}
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bool result = decoder->IsHardwareAccelerated(aFailureReason);
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decoder->Shutdown();
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return result;
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}
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} // namespace mozilla
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