Source code
Revision control
Copy as Markdown
Other Tools
/* -*- 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
#include "AgnosticDecoderModule.h"
#include "TheoraDecoder.h"
#include "VPXDecoder.h"
#include "mozilla/Logging.h"
#include "mozilla/StaticPrefs_media.h"
#include "VideoUtils.h"
#ifdef MOZ_AV1
# include "AOMDecoder.h"
# include "DAV1DDecoder.h"
#endif
namespace mozilla {
enum class DecoderType {
#ifdef MOZ_AV1
AV1,
#endif
Opus,
Theora,
Vorbis,
VPX,
Wave,
};
static bool IsAvailableInDefault(DecoderType type) {
switch (type) {
#ifdef MOZ_AV1
case DecoderType::AV1:
return StaticPrefs::media_av1_enabled();
#endif
case DecoderType::Theora:
return StaticPrefs::media_theora_enabled();
case DecoderType::Opus:
case DecoderType::Vorbis:
case DecoderType::VPX:
case DecoderType::Wave:
return true;
default:
return false;
}
}
static bool IsAvailableInRdd(DecoderType type) {
switch (type) {
#ifdef MOZ_AV1
case DecoderType::AV1:
return StaticPrefs::media_av1_enabled();
#endif
case DecoderType::Opus:
return StaticPrefs::media_rdd_opus_enabled();
case DecoderType::Theora:
return StaticPrefs::media_rdd_theora_enabled() &&
StaticPrefs::media_theora_enabled();
case DecoderType::Vorbis:
#if defined(__MINGW32__)
// If this is a MinGW build we need to force AgnosticDecoderModule to
// handle the decision to support Vorbis decoding (instead of
// RDD causing sandboxing failure on MinGW-clang). Typically this
// would be dealt with using defines in StaticPrefList.yaml, but we
// isn't supported in StaticPrefList.yaml).
return false;
#else
return StaticPrefs::media_rdd_vorbis_enabled();
#endif
case DecoderType::VPX:
return StaticPrefs::media_rdd_vpx_enabled();
case DecoderType::Wave:
return StaticPrefs::media_rdd_wav_enabled();
default:
return false;
}
}
static bool IsAvailableInUtility(DecoderType type) {
switch (type) {
case DecoderType::Opus:
return StaticPrefs::media_utility_opus_enabled();
case DecoderType::Vorbis:
return StaticPrefs::media_utility_vorbis_enabled();
case DecoderType::Wave:
return StaticPrefs::media_utility_wav_enabled();
case DecoderType::Theora: // Video codecs, dont take care of them
case DecoderType::VPX:
default:
return false;
}
}
// Checks if decoder is available in the current process
static bool IsAvailable(DecoderType type) {
return XRE_IsRDDProcess() ? IsAvailableInRdd(type)
: XRE_IsUtilityProcess() ? IsAvailableInUtility(type)
: IsAvailableInDefault(type);
}
media::DecodeSupportSet AgnosticDecoderModule::SupportsMimeType(
const nsACString& aMimeType, DecoderDoctorDiagnostics* aDiagnostics) const {
UniquePtr<TrackInfo> trackInfo = CreateTrackInfoWithMIMEType(aMimeType);
if (!trackInfo) {
return media::DecodeSupportSet{};
}
return Supports(SupportDecoderParams(*trackInfo), aDiagnostics);
}
media::DecodeSupportSet AgnosticDecoderModule::Supports(
const SupportDecoderParams& aParams,
DecoderDoctorDiagnostics* aDiagnostics) const {
// This should only be supported by MFMediaEngineDecoderModule.
if (aParams.mMediaEngineId) {
return media::DecodeSupportSet{};
}
const auto& trackInfo = aParams.mConfig;
const nsACString& mimeType = trackInfo.mMimeType;
bool supports =
#ifdef MOZ_AV1
// We remove support for decoding AV1 here if RDD is enabled so that
// decoding on the content process doesn't accidentally happen in case
// something goes wrong with launching the RDD process.
(AOMDecoder::IsAV1(mimeType) && IsAvailable(DecoderType::AV1)) ||
#endif
(VPXDecoder::IsVPX(mimeType) && IsAvailable(DecoderType::VPX)) ||
(TheoraDecoder::IsTheora(mimeType) && IsAvailable(DecoderType::Theora) &&
StaticPrefs::media_theora_enabled());
MOZ_LOG(sPDMLog, LogLevel::Debug,
("Agnostic decoder %s requested type '%s'",
supports ? "supports" : "rejects", mimeType.BeginReading()));
if (supports) {
return media::DecodeSupport::SoftwareDecode;
}
return media::DecodeSupportSet{};
}
already_AddRefed<MediaDataDecoder> AgnosticDecoderModule::CreateVideoDecoder(
const CreateDecoderParams& aParams) {
if (Supports(SupportDecoderParams(aParams), nullptr /* diagnostic */)
.isEmpty()) {
return nullptr;
}
RefPtr<MediaDataDecoder> m;
if (VPXDecoder::IsVPX(aParams.mConfig.mMimeType)) {
m = new VPXDecoder(aParams);
}
#ifdef MOZ_AV1
// We remove support for decoding AV1 here if RDD is enabled so that
// decoding on the content process doesn't accidentally happen in case
// something goes wrong with launching the RDD process.
if (StaticPrefs::media_av1_enabled() &&
(!StaticPrefs::media_rdd_process_enabled() || XRE_IsRDDProcess()) &&
AOMDecoder::IsAV1(aParams.mConfig.mMimeType)) {
if (StaticPrefs::media_av1_use_dav1d()) {
m = new DAV1DDecoder(aParams);
} else {
m = new AOMDecoder(aParams);
}
}
#endif
else if (TheoraDecoder::IsTheora(aParams.mConfig.mMimeType) &&
StaticPrefs::media_theora_enabled()) {
m = new TheoraDecoder(aParams);
}
return m.forget();
}
already_AddRefed<MediaDataDecoder> AgnosticDecoderModule::CreateAudioDecoder(
const CreateDecoderParams& aParams) {
return nullptr;
}
/* static */
already_AddRefed<PlatformDecoderModule> AgnosticDecoderModule::Create() {
RefPtr<PlatformDecoderModule> pdm = new AgnosticDecoderModule();
return pdm.forget();
}
} // namespace mozilla