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/* 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 "MFMediaEngineAudioStream.h"
#include <mferror.h>
#include <mfapi.h>
#include "MFMediaEngineUtils.h"
#include "WMFUtils.h"
#include "mozilla/StaticPrefs_media.h"
namespace mozilla {
#define LOG(msg, ...) \
MOZ_LOG(gMFMediaEngineLog, LogLevel::Debug, \
("MFMediaStream=%p (%s), " msg, this, \
this->GetDescriptionName().get(), ##__VA_ARGS__))
using Microsoft::WRL::ComPtr;
using Microsoft::WRL::MakeAndInitialize;
/* static */
MFMediaEngineAudioStream* MFMediaEngineAudioStream::Create(
uint64_t aStreamId, const TrackInfo& aInfo, MFMediaSource* aParentSource) {
MOZ_ASSERT(aInfo.IsAudio());
MFMediaEngineAudioStream* stream;
if (FAILED(MakeAndInitialize<MFMediaEngineAudioStream>(
&stream, aStreamId, aInfo, aParentSource))) {
return nullptr;
}
return stream;
}
HRESULT MFMediaEngineAudioStream::CreateMediaType(const TrackInfo& aInfo,
IMFMediaType** aMediaType) {
const AudioInfo& info = *aInfo.GetAsAudioInfo();
mAudioInfo = info;
GUID subType = AudioMimeTypeToMediaFoundationSubtype(info.mMimeType);
NS_ENSURE_TRUE(subType != GUID_NULL, MF_E_TOPO_CODEC_NOT_FOUND);
// https://docs.microsoft.com/en-us/windows/win32/medfound/media-type-attributes
ComPtr<IMFMediaType> mediaType;
RETURN_IF_FAILED(wmf::MFCreateMediaType(&mediaType));
RETURN_IF_FAILED(mediaType->SetGUID(MF_MT_SUBTYPE, subType));
RETURN_IF_FAILED(mediaType->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Audio));
RETURN_IF_FAILED(
mediaType->SetUINT32(MF_MT_AUDIO_NUM_CHANNELS, info.mChannels));
RETURN_IF_FAILED(
mediaType->SetUINT32(MF_MT_AUDIO_SAMPLES_PER_SECOND, info.mRate));
uint64_t bitDepth = info.mBitDepth != 0 ? info.mBitDepth : 16;
RETURN_IF_FAILED(mediaType->SetUINT32(MF_MT_AUDIO_BITS_PER_SAMPLE, bitDepth));
if (subType == MFAudioFormat_AAC) {
if (mAACUserData.IsEmpty()) {
MOZ_ASSERT(info.mCodecSpecificConfig.is<AacCodecSpecificData>() ||
info.mCodecSpecificConfig.is<AudioCodecSpecificBinaryBlob>());
RefPtr<MediaByteBuffer> blob;
if (info.mCodecSpecificConfig.is<AacCodecSpecificData>()) {
blob = info.mCodecSpecificConfig.as<AacCodecSpecificData>()
.mDecoderConfigDescriptorBinaryBlob;
} else {
blob = info.mCodecSpecificConfig.as<AudioCodecSpecificBinaryBlob>()
.mBinaryBlob;
}
AACAudioSpecificConfigToUserData(info.mExtendedProfile, blob->Elements(),
blob->Length(), mAACUserData);
LOG("Generated AAC user data");
}
RETURN_IF_FAILED(
mediaType->SetUINT32(MF_MT_AAC_PAYLOAD_TYPE, 0x0)); // Raw AAC packet
RETURN_IF_FAILED(mediaType->SetBlob(
MF_MT_USER_DATA, mAACUserData.Elements(), mAACUserData.Length()));
}
LOG("Created audio type, subtype=%s, channel=%" PRIu32 ", rate=%" PRIu32
", bitDepth=%" PRIu64 ", encrypted=%d",
GUIDToStr(subType), info.mChannels, info.mRate, bitDepth,
mAudioInfo.mCrypto.IsEncrypted());
if (IsEncrypted()) {
ComPtr<IMFMediaType> protectedMediaType;
RETURN_IF_FAILED(wmf::MFWrapMediaType(mediaType.Get(),
MFMediaType_Protected, subType,
protectedMediaType.GetAddressOf()));
LOG("Wrap MFMediaType_Audio into MFMediaType_Protected");
*aMediaType = protectedMediaType.Detach();
} else {
*aMediaType = mediaType.Detach();
}
return S_OK;
}
bool MFMediaEngineAudioStream::HasEnoughRawData() const {
// If more than this much raw audio is queued, we'll hold off request more
// audio.
return mRawDataQueueForFeedingEngine.PreciseDuration() >=
StaticPrefs::media_wmf_media_engine_raw_data_threshold_audio();
}
already_AddRefed<MediaData> MFMediaEngineAudioStream::OutputDataInternal() {
AssertOnTaskQueue();
if (mRawDataQueueForGeneratingOutput.GetSize() == 0) {
return nullptr;
}
// The media engine doesn't provide a way to allow us to access decoded audio
// frames, and the audio playback will be handled internally inside the media
// engine. So we simply return fake audio data.
RefPtr<MediaRawData> input = mRawDataQueueForGeneratingOutput.PopFront();
RefPtr<MediaData> output =
new AudioData(input->mOffset, input->mTime, AlignedAudioBuffer{},
mAudioInfo.mChannels, mAudioInfo.mRate);
return output.forget();
}
nsCString MFMediaEngineAudioStream::GetCodecName() const {
WMFStreamType type = GetStreamTypeFromMimeType(mAudioInfo.mMimeType);
switch (type) {
case WMFStreamType::MP3:
return "mp3"_ns;
case WMFStreamType::AAC:
return "aac"_ns;
case WMFStreamType::OPUS:
return "opus"_ns;
case WMFStreamType::VORBIS:
return "vorbis"_ns;
default:
return "unknown"_ns;
}
}
bool MFMediaEngineAudioStream::IsEncrypted() const {
return mAudioInfo.mCrypto.IsEncrypted();
}
#undef LOG
} // namespace mozilla
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