зеркало из https://github.com/mozilla/gecko-dev.git
384 строки
10 KiB
C++
384 строки
10 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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#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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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()
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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 = new MediaFormatReader(this, new MP4Demuxer(GetResource()));
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return new MediaDecoderStateMachine(this, reader);
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}
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#ifdef MOZ_EME
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nsresult
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MP4Decoder::SetCDMProxy(CDMProxy* aProxy)
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{
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nsresult rv = MediaDecoder::SetCDMProxy(aProxy);
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NS_ENSURE_SUCCESS(rv, rv);
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if (aProxy) {
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// The MediaFormatReader can't decrypt EME content until it has a CDMProxy,
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// and the CDMProxy knows the capabilities of the CDM. The MediaFormatReader
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// remains in "waiting for resources" state until then.
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CDMCaps::AutoLock caps(aProxy->Capabilites());
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nsCOMPtr<nsIRunnable> task(
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NS_NewRunnableMethod(this, &MediaDecoder::NotifyWaitingForResourcesStatusChanged));
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caps.CallOnMainThreadWhenCapsAvailable(task);
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}
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return NS_OK;
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}
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#endif
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static bool
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IsSupportedAudioCodec(const nsAString& aCodec,
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bool& aOutContainsAAC,
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bool& aOutContainsMP3)
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{
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// AAC-LC or HE-AAC in M4A.
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aOutContainsAAC = aCodec.EqualsASCII("mp4a.40.2") // MPEG4 AAC-LC
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|| aCodec.EqualsASCII("mp4a.40.5") // MPEG4 HE-AAC
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|| aCodec.EqualsASCII("mp4a.67"); // MPEG2 AAC-LC
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if (aOutContainsAAC) {
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return true;
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}
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#ifndef MOZ_GONK_MEDIACODEC // B2G doesn't support MP3 in MP4 yet.
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aOutContainsMP3 = aCodec.EqualsASCII("mp3");
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if (aOutContainsMP3) {
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return true;
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}
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#else
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aOutContainsMP3 = false;
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#endif
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return false;
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}
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static bool
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IsSupportedH264Codec(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& aType,
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const nsAString& aCodecs,
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bool& aOutContainsAAC,
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bool& aOutContainsH264,
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bool& aOutContainsMP3)
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{
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if (!IsEnabled()) {
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return false;
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}
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if (aType.EqualsASCII("audio/mp4") || aType.EqualsASCII("audio/x-m4a")) {
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return MP4Decoder::CanCreateAACDecoder() &&
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(aCodecs.IsEmpty() ||
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IsSupportedAudioCodec(aCodecs,
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aOutContainsAAC,
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aOutContainsMP3));
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}
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if (!aType.EqualsASCII("video/mp4") ||
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!MP4Decoder::CanCreateH264Decoder()) {
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return false;
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}
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// Verify that all the codecs specifed are ones that we expect that
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// we can play.
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nsCharSeparatedTokenizer tokenizer(aCodecs, ',');
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bool expectMoreTokens = false;
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while (tokenizer.hasMoreTokens()) {
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const nsSubstring& token = tokenizer.nextToken();
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expectMoreTokens = tokenizer.separatorAfterCurrentToken();
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if (IsSupportedAudioCodec(token,
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aOutContainsAAC,
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aOutContainsMP3)) {
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continue;
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}
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if (IsSupportedH264Codec(token)) {
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aOutContainsH264 = true;
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continue;
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}
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return false;
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}
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if (expectMoreTokens) {
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// Last codec name was empty
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return false;
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}
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return true;
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}
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static bool
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IsFFmpegAvailable()
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{
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#ifndef MOZ_FFMPEG
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return false;
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#else
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return Preferences::GetBool("media.fragmented-mp4.ffmpeg.enabled", false);
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#endif
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}
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static bool
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IsAppleAvailable()
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{
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#ifndef MOZ_APPLEMEDIA
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// Not the right platform.
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return false;
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#else
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return Preferences::GetBool("media.apple.mp4.enabled", false);
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#endif
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}
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static bool
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IsAndroidAvailable()
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{
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#ifndef MOZ_WIDGET_ANDROID
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return false;
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#else
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// We need android.media.MediaCodec which exists in API level 16 and higher.
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return AndroidBridge::Bridge() && (AndroidBridge::Bridge()->GetAPIVersion() >= 16);
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#endif
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}
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static bool
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IsGonkMP4DecoderAvailable()
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{
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#ifndef MOZ_GONK_MEDIACODEC
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return false;
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#else
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return Preferences::GetBool("media.fragmented-mp4.gonk.enabled", false);
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#endif
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}
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static bool
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IsGMPDecoderAvailable()
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{
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return Preferences::GetBool("media.fragmented-mp4.gmp.enabled", false);
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}
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static bool
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HavePlatformMPEGDecoders()
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{
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return Preferences::GetBool("media.fragmented-mp4.use-blank-decoder") ||
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#ifdef XP_WIN
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// We have H.264/AAC platform decoders on Windows Vista and up.
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IsVistaOrLater() ||
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#endif
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IsAndroidAvailable() ||
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IsFFmpegAvailable() ||
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IsAppleAvailable() ||
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IsGonkMP4DecoderAvailable() ||
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IsGMPDecoderAvailable() ||
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// TODO: Other platforms...
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false;
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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.fragmented-mp4.enabled") &&
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HavePlatformMPEGDecoders();
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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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PlatformDecoderModule::Init();
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nsRefPtr<PlatformDecoderModule> platform = PlatformDecoderModule::Create();
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if (!platform) {
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return nullptr;
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}
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nsRefPtr<MediaDataDecoder> decoder(
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platform->CreateDecoder(aConfig, nullptr, nullptr, aBackend, nullptr));
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if (!decoder) {
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return nullptr;
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}
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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)
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{
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VideoInfo config;
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nsRefPtr<MediaDataDecoder> decoder(CreateTestH264Decoder(aBackend, config));
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if (!decoder) {
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return false;
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}
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bool result = decoder->IsHardwareAccelerated();
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return result;
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}
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/* static */ bool
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MP4Decoder::CanCreateH264Decoder()
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{
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#ifdef XP_WIN
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static bool haveCachedResult = false;
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static bool result = false;
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if (haveCachedResult) {
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return result;
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}
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VideoInfo config;
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nsRefPtr<MediaDataDecoder> decoder(
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CreateTestH264Decoder(layers::LayersBackend::LAYERS_BASIC, config));
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if (decoder) {
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decoder->Shutdown();
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result = true;
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}
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haveCachedResult = true;
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return result;
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#else
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return IsEnabled();
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#endif
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}
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#ifdef XP_WIN
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static already_AddRefed<MediaDataDecoder>
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CreateTestAACDecoder(AudioInfo& aConfig)
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{
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PlatformDecoderModule::Init();
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nsRefPtr<PlatformDecoderModule> platform = PlatformDecoderModule::Create();
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if (!platform) {
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return nullptr;
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}
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nsRefPtr<MediaDataDecoder> decoder(
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platform->CreateDecoder(aConfig, nullptr, nullptr));
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if (!decoder) {
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return nullptr;
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}
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return decoder.forget();
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}
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// bipbop.mp4's extradata/config...
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static const uint8_t sTestAACExtraData[] = {
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0x03, 0x80, 0x80, 0x80, 0x22, 0x00, 0x02, 0x00, 0x04, 0x80,
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0x80, 0x80, 0x14, 0x40, 0x15, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x11, 0x51, 0x00, 0x00, 0x11, 0x51, 0x05, 0x80, 0x80, 0x80,
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0x02, 0x13, 0x90, 0x06, 0x80, 0x80, 0x80, 0x01, 0x02
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};
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static const uint8_t sTestAACConfig[] = { 0x13, 0x90 };
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#endif // XP_WIN
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/* static */ bool
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MP4Decoder::CanCreateAACDecoder()
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{
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#ifdef XP_WIN
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static bool haveCachedResult = false;
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static bool result = false;
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if (haveCachedResult) {
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return result;
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}
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AudioInfo config;
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config.mMimeType = "audio/mp4a-latm";
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config.mRate = 22050;
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config.mChannels = 2;
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config.mBitDepth = 16;
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config.mProfile = 2;
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config.mExtendedProfile = 2;
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config.mCodecSpecificConfig->AppendElements(sTestAACConfig,
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MOZ_ARRAY_LENGTH(sTestAACConfig));
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config.mExtraData->AppendElements(sTestAACExtraData,
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MOZ_ARRAY_LENGTH(sTestAACExtraData));
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nsRefPtr<MediaDataDecoder> decoder(CreateTestAACDecoder(config));
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if (decoder) {
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result = true;
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}
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haveCachedResult = true;
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return result;
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#else
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return IsEnabled();
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#endif
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}
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} // namespace mozilla
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