зеркало из https://github.com/mozilla/gecko-dev.git
318 строки
9.3 KiB
C++
318 строки
9.3 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 "DecoderTraits.h"
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#include "MediaContainerType.h"
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#include "nsMimeTypes.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/Telemetry.h"
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#include "OggDecoder.h"
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#include "OggDemuxer.h"
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#include "WebMDecoder.h"
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#include "WebMDemuxer.h"
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#ifdef MOZ_ANDROID_HLS_SUPPORT
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#include "HLSDecoder.h"
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#endif
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#ifdef MOZ_FMP4
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#include "MP4Decoder.h"
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#include "MP4Demuxer.h"
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#endif
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#include "MediaFormatReader.h"
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#include "MP3Decoder.h"
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#include "MP3Demuxer.h"
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#include "WaveDecoder.h"
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#include "WaveDemuxer.h"
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#include "ADTSDecoder.h"
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#include "ADTSDemuxer.h"
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#include "FlacDecoder.h"
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#include "FlacDemuxer.h"
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#include "nsPluginHost.h"
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#include "MediaPrefs.h"
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namespace mozilla
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{
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/* static */ bool
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DecoderTraits::IsHttpLiveStreamingType(const MediaContainerType& aType)
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{
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const auto& mimeType = aType.Type();
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return // For m3u8.
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// https://tools.ietf.org/html/draft-pantos-http-live-streaming-19#section-10
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mimeType == MEDIAMIMETYPE("application/vnd.apple.mpegurl") ||
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// Some sites serve these as the informal m3u type.
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mimeType == MEDIAMIMETYPE("application/x-mpegurl") ||
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mimeType == MEDIAMIMETYPE("audio/mpegurl") ||
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mimeType == MEDIAMIMETYPE("audio/x-mpegurl");
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}
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/* static */ bool
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DecoderTraits::IsMP4SupportedType(const MediaContainerType& aType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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#ifdef MOZ_FMP4
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return MP4Decoder::IsSupportedType(aType, aDiagnostics);
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#else
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return false;
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#endif
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}
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static
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CanPlayStatus
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CanHandleCodecsType(const MediaContainerType& aType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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// We should have been given a codecs string, though it may be empty.
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MOZ_ASSERT(aType.ExtendedType().HaveCodecs());
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// Container type with the MIME type, no codecs.
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const MediaContainerType mimeType(aType.Type());
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if (OggDecoder::IsSupportedType(mimeType)) {
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if (OggDecoder::IsSupportedType(aType)) {
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return CANPLAY_YES;
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}
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// We can only reach this position if a particular codec was requested,
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// ogg is supported and working: the codec must be invalid.
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return CANPLAY_NO;
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}
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if (WaveDecoder::IsSupportedType(MediaContainerType(mimeType))) {
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if (WaveDecoder::IsSupportedType(aType)) {
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return CANPLAY_YES;
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}
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// We can only reach this position if a particular codec was requested,
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// ogg is supported and working: the codec must be invalid.
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return CANPLAY_NO;
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}
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if (WebMDecoder::IsSupportedType(mimeType)) {
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if (WebMDecoder::IsSupportedType(aType)) {
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return CANPLAY_YES;
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}
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// We can only reach this position if a particular codec was requested,
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// webm is supported and working: the codec must be invalid.
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return CANPLAY_NO;
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}
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#ifdef MOZ_FMP4
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if (MP4Decoder::IsSupportedType(mimeType,
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/* DecoderDoctorDiagnostics* */ nullptr)) {
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if (MP4Decoder::IsSupportedType(aType, aDiagnostics)) {
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return CANPLAY_YES;
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}
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// We can only reach this position if a particular codec was requested,
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// fmp4 is supported and working: the codec must be invalid.
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return CANPLAY_NO;
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}
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#endif
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if (MP3Decoder::IsSupportedType(aType)) {
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return CANPLAY_YES;
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}
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if (ADTSDecoder::IsSupportedType(aType)) {
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return CANPLAY_YES;
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}
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if (FlacDecoder::IsSupportedType(aType)) {
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return CANPLAY_YES;
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}
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return CANPLAY_MAYBE;
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}
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static
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CanPlayStatus
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CanHandleMediaType(const MediaContainerType& aType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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MOZ_ASSERT(NS_IsMainThread());
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#ifdef MOZ_ANDROID_HLS_SUPPORT
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if (HLSDecoder::IsSupportedType(aType)) {
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return CANPLAY_MAYBE;
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}
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#endif
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if (DecoderTraits::IsHttpLiveStreamingType(aType)) {
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Telemetry::Accumulate(Telemetry::MEDIA_HLS_CANPLAY_REQUESTED, true);
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}
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if (aType.ExtendedType().HaveCodecs()) {
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CanPlayStatus result = CanHandleCodecsType(aType, aDiagnostics);
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if (result == CANPLAY_NO || result == CANPLAY_YES) {
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return result;
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}
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}
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// Container type with just the MIME type/subtype, no codecs.
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const MediaContainerType mimeType(aType.Type());
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if (OggDecoder::IsSupportedType(mimeType)) {
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return CANPLAY_MAYBE;
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}
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if (WaveDecoder::IsSupportedType(mimeType)) {
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return CANPLAY_MAYBE;
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}
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#ifdef MOZ_FMP4
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if (MP4Decoder::IsSupportedType(mimeType, aDiagnostics)) {
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return CANPLAY_MAYBE;
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}
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#endif
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if (WebMDecoder::IsSupportedType(mimeType)) {
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return CANPLAY_MAYBE;
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}
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if (MP3Decoder::IsSupportedType(mimeType)) {
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return CANPLAY_MAYBE;
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}
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if (ADTSDecoder::IsSupportedType(mimeType)) {
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return CANPLAY_MAYBE;
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}
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if (FlacDecoder::IsSupportedType(mimeType)) {
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return CANPLAY_MAYBE;
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}
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return CANPLAY_NO;
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}
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/* static */
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CanPlayStatus
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DecoderTraits::CanHandleContainerType(const MediaContainerType& aContainerType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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return CanHandleMediaType(aContainerType, aDiagnostics);
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}
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/* static */
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bool DecoderTraits::ShouldHandleMediaType(const char* aMIMEType,
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DecoderDoctorDiagnostics* aDiagnostics)
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{
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Maybe<MediaContainerType> containerType = MakeMediaContainerType(aMIMEType);
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if (!containerType) {
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return false;
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}
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if (WaveDecoder::IsSupportedType(*containerType)) {
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// We should not return true for Wave types, since there are some
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// Wave codecs actually in use in the wild that we don't support, and
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// we should allow those to be handled by plugins or helper apps.
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// Furthermore people can play Wave files on most platforms by other
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// means.
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return false;
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}
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// If an external plugin which can handle quicktime video is available
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// (and not disabled), prefer it over native playback as there several
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// codecs found in the wild that we do not handle.
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if (containerType->Type() == MEDIAMIMETYPE("video/quicktime")) {
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RefPtr<nsPluginHost> pluginHost = nsPluginHost::GetInst();
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if (pluginHost &&
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pluginHost->HavePluginForType(containerType->Type().AsString())) {
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return false;
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}
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}
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return CanHandleMediaType(*containerType, aDiagnostics) != CANPLAY_NO;
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}
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/* static */
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MediaFormatReader*
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DecoderTraits::CreateReader(const MediaContainerType& aType,
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MediaFormatReaderInit& aInit)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MediaFormatReader* decoderReader = nullptr;
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MediaResource* resource = aInit.mResource;
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#ifdef MOZ_FMP4
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if (MP4Decoder::IsSupportedType(aType,
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/* DecoderDoctorDiagnostics* */ nullptr)) {
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decoderReader = new MediaFormatReader(aInit, new MP4Demuxer(resource));
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} else
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#endif
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if (MP3Decoder::IsSupportedType(aType)) {
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decoderReader = new MediaFormatReader(aInit, new MP3Demuxer(resource));
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} else
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if (ADTSDecoder::IsSupportedType(aType)) {
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decoderReader = new MediaFormatReader(aInit, new ADTSDemuxer(resource));
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} else
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if (WaveDecoder::IsSupportedType(aType)) {
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decoderReader = new MediaFormatReader(aInit, new WAVDemuxer(resource));
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} else
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if (FlacDecoder::IsSupportedType(aType)) {
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decoderReader = new MediaFormatReader(aInit, new FlacDemuxer(resource));
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} else
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if (OggDecoder::IsSupportedType(aType)) {
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RefPtr<OggDemuxer> demuxer = new OggDemuxer(resource);
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decoderReader = new MediaFormatReader(aInit, demuxer);
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demuxer->SetChainingEvents(&decoderReader->TimedMetadataProducer(),
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&decoderReader->MediaNotSeekableProducer());
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} else
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if (WebMDecoder::IsSupportedType(aType)) {
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decoderReader = new MediaFormatReader(aInit, new WebMDemuxer(resource));
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}
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return decoderReader;
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}
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/* static */
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bool
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DecoderTraits::IsSupportedType(const MediaContainerType& aType)
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{
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typedef bool (*IsSupportedFunction)(const MediaContainerType& aType);
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static const IsSupportedFunction funcs[] = {
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&ADTSDecoder::IsSupportedType,
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&FlacDecoder::IsSupportedType,
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&MP3Decoder::IsSupportedType,
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#ifdef MOZ_FMP4
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&MP4Decoder::IsSupportedTypeWithoutDiagnostics,
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#endif
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&OggDecoder::IsSupportedType,
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&WaveDecoder::IsSupportedType,
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&WebMDecoder::IsSupportedType,
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};
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for (IsSupportedFunction func : funcs) {
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if (func(aType)) {
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return true;
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}
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}
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return false;
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}
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/* static */
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bool DecoderTraits::IsSupportedInVideoDocument(const nsACString& aType)
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{
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// Forbid playing media in video documents if the user has opted
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// not to, using either the legacy WMF specific pref, or the newer
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// catch-all pref.
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if (!Preferences::GetBool("media.wmf.play-stand-alone", true) ||
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!Preferences::GetBool("media.play-stand-alone", true)) {
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return false;
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}
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Maybe<MediaContainerType> type = MakeMediaContainerType(aType);
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if (!type) {
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return false;
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}
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return
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OggDecoder::IsSupportedType(*type) ||
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WebMDecoder::IsSupportedType(*type) ||
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#ifdef MOZ_FMP4
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MP4Decoder::IsSupportedType(*type, /* DecoderDoctorDiagnostics* */ nullptr) ||
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#endif
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MP3Decoder::IsSupportedType(*type) ||
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ADTSDecoder::IsSupportedType(*type) ||
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FlacDecoder::IsSupportedType(*type) ||
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#ifdef MOZ_ANDROID_HLS_SUPPORT
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HLSDecoder::IsSupportedType(*type) ||
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#endif
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false;
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}
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} // namespace mozilla
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