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