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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
#include "GMPVideoDecoder.h"
#include "GMPDecoderModule.h"
#include "GMPVideoHost.h"
#include "GMPLog.h"
#include "MediaData.h"
#include "mozilla/EndianUtils.h"
#include "mozilla/StaticPrefs_media.h"
#include "nsServiceManagerUtils.h"
#include "AnnexB.h"
#include "H264.h"
#include "MP4Decoder.h"
#include "prsystem.h"
#include "VPXDecoder.h"
#include "VideoUtils.h"
namespace mozilla {
#if defined(DEBUG)
static bool IsOnGMPThread() {
nsCOMPtr<mozIGeckoMediaPluginService> mps =
do_GetService("@mozilla.org/gecko-media-plugin-service;1");
MOZ_ASSERT(mps);
nsCOMPtr<nsIThread> gmpThread;
nsresult rv = mps->GetThread(getter_AddRefs(gmpThread));
MOZ_ASSERT(NS_SUCCEEDED(rv) && gmpThread);
return gmpThread->IsOnCurrentThread();
}
#endif
GMPVideoDecoderParams::GMPVideoDecoderParams(const CreateDecoderParams& aParams)
: mConfig(aParams.VideoConfig()),
mImageContainer(aParams.mImageContainer),
mCrashHelper(aParams.mCrashHelper),
mKnowsCompositor(aParams.mKnowsCompositor),
mTrackingId(aParams.mTrackingId) {}
nsCString GMPVideoDecoder::GetCodecName() const {
if (MP4Decoder::IsH264(mConfig.mMimeType)) {
return "h264"_ns;
} else if (VPXDecoder::IsVP8(mConfig.mMimeType)) {
return "vp8"_ns;
} else if (VPXDecoder::IsVP9(mConfig.mMimeType)) {
return "vp9"_ns;
}
return "unknown"_ns;
}
void GMPVideoDecoder::Decoded(GMPVideoi420Frame* aDecodedFrame) {
GMP_LOG_DEBUG("GMPVideoDecoder::Decoded");
GMPUniquePtr<GMPVideoi420Frame> decodedFrame(aDecodedFrame);
MOZ_ASSERT(IsOnGMPThread());
VideoData::YCbCrBuffer b;
for (int i = 0; i < kGMPNumOfPlanes; ++i) {
b.mPlanes[i].mData = decodedFrame->Buffer(GMPPlaneType(i));
b.mPlanes[i].mStride = decodedFrame->Stride(GMPPlaneType(i));
if (i == kGMPYPlane) {
b.mPlanes[i].mWidth = decodedFrame->Width();
b.mPlanes[i].mHeight = decodedFrame->Height();
} else {
b.mPlanes[i].mWidth = (decodedFrame->Width() + 1) / 2;
b.mPlanes[i].mHeight = (decodedFrame->Height() + 1) / 2;
}
b.mPlanes[i].mSkip = 0;
}
b.mChromaSubsampling = gfx::ChromaSubsampling::HALF_WIDTH_AND_HEIGHT;
b.mYUVColorSpace =
DefaultColorSpace({decodedFrame->Width(), decodedFrame->Height()});
UniquePtr<SampleMetadata> sampleData;
if (auto entryHandle = mSamples.Lookup(decodedFrame->Timestamp())) {
sampleData = std::move(entryHandle.Data());
entryHandle.Remove();
} else {
GMP_LOG_DEBUG(
"GMPVideoDecoder::Decoded(this=%p) missing sample metadata for "
"time %" PRIu64,
this, decodedFrame->Timestamp());
if (mSamples.IsEmpty()) {
// If we have no remaining samples in the table, then we have processed
// all outstanding decode requests.
ProcessReorderQueue(mDecodePromise, __func__);
}
return;
}
MOZ_ASSERT(sampleData);
gfx::IntRect pictureRegion(0, 0, decodedFrame->Width(),
decodedFrame->Height());
Result<already_AddRefed<VideoData>, MediaResult> r =
VideoData::CreateAndCopyData(
mConfig, mImageContainer, sampleData->mOffset,
media::TimeUnit::FromMicroseconds(decodedFrame->UpdatedTimestamp()),
media::TimeUnit::FromMicroseconds(decodedFrame->Duration()), b,
sampleData->mKeyframe, media::TimeUnit::FromMicroseconds(-1),
pictureRegion, mKnowsCompositor);
if (r.isErr()) {
mReorderQueue.Clear();
mUnorderedData.Clear();
mSamples.Clear();
mDecodePromise.RejectIfExists(r.unwrapErr(), __func__);
return;
}
RefPtr<VideoData> v = r.unwrap();
MOZ_ASSERT(v);
mPerformanceRecorder.Record(static_cast<int64_t>(decodedFrame->Timestamp()),
[&](DecodeStage& aStage) {
aStage.SetImageFormat(DecodeStage::YUV420P);
aStage.SetResolution(decodedFrame->Width(),
decodedFrame->Height());
aStage.SetYUVColorSpace(b.mYUVColorSpace);
aStage.SetColorDepth(b.mColorDepth);
aStage.SetColorRange(b.mColorRange);
});
if (mReorderFrames) {
mReorderQueue.Push(std::move(v));
} else {
mUnorderedData.AppendElement(std::move(v));
}
if (mSamples.IsEmpty()) {
// If we have no remaining samples in the table, then we have processed
// all outstanding decode requests.
ProcessReorderQueue(mDecodePromise, __func__);
}
}
void GMPVideoDecoder::ReceivedDecodedReferenceFrame(const uint64_t aPictureId) {
GMP_LOG_DEBUG("GMPVideoDecoder::ReceivedDecodedReferenceFrame");
MOZ_ASSERT(IsOnGMPThread());
}
void GMPVideoDecoder::ReceivedDecodedFrame(const uint64_t aPictureId) {
GMP_LOG_DEBUG("GMPVideoDecoder::ReceivedDecodedFrame");
MOZ_ASSERT(IsOnGMPThread());
}
void GMPVideoDecoder::InputDataExhausted() {
GMP_LOG_DEBUG("GMPVideoDecoder::InputDataExhausted");
MOZ_ASSERT(IsOnGMPThread());
mSamples.Clear();
ProcessReorderQueue(mDecodePromise, __func__);
}
void GMPVideoDecoder::DrainComplete() {
GMP_LOG_DEBUG("GMPVideoDecoder::DrainComplete");
MOZ_ASSERT(IsOnGMPThread());
mSamples.Clear();
if (mDrainPromise.IsEmpty()) {
return;
}
DecodedData results;
if (mReorderFrames) {
results.SetCapacity(mReorderQueue.Length());
while (!mReorderQueue.IsEmpty()) {
results.AppendElement(mReorderQueue.Pop());
}
} else {
results = std::move(mUnorderedData);
}
mDrainPromise.Resolve(std::move(results), __func__);
}
void GMPVideoDecoder::ResetComplete() {
GMP_LOG_DEBUG("GMPVideoDecoder::ResetComplete");
MOZ_ASSERT(IsOnGMPThread());
mPerformanceRecorder.Record(std::numeric_limits<int64_t>::max());
mFlushPromise.ResolveIfExists(true, __func__);
}
void GMPVideoDecoder::Error(GMPErr aErr) {
GMP_LOG_DEBUG("GMPVideoDecoder::Error");
MOZ_ASSERT(IsOnGMPThread());
auto error = MediaResult(aErr == GMPDecodeErr ? NS_ERROR_DOM_MEDIA_DECODE_ERR
: NS_ERROR_DOM_MEDIA_FATAL_ERR,
RESULT_DETAIL("GMPErr:%x", aErr));
mDecodePromise.RejectIfExists(error, __func__);
mDrainPromise.RejectIfExists(error, __func__);
mFlushPromise.RejectIfExists(error, __func__);
}
void GMPVideoDecoder::Terminated() {
GMP_LOG_DEBUG("GMPVideoDecoder::Terminated");
MOZ_ASSERT(IsOnGMPThread());
Error(GMPErr::GMPAbortedErr);
}
void GMPVideoDecoder::ProcessReorderQueue(
MozPromiseHolder<DecodePromise>& aPromise, StaticString aMethodName) {
if (aPromise.IsEmpty()) {
return;
}
if (!mReorderFrames) {
aPromise.Resolve(std::move(mUnorderedData), aMethodName);
return;
}
DecodedData results;
size_t availableFrames = mReorderQueue.Length();
if (availableFrames > mMaxRefFrames) {
size_t resolvedFrames = availableFrames - mMaxRefFrames;
results.SetCapacity(resolvedFrames);
do {
results.AppendElement(mReorderQueue.Pop());
} while (--resolvedFrames > 0);
}
aPromise.Resolve(std::move(results), aMethodName);
}
GMPVideoDecoder::GMPVideoDecoder(const GMPVideoDecoderParams& aParams)
: mConfig(aParams.mConfig),
mGMP(nullptr),
mHost(nullptr),
mConvertNALUnitLengths(false),
mCrashHelper(aParams.mCrashHelper),
mImageContainer(aParams.mImageContainer),
mKnowsCompositor(aParams.mKnowsCompositor),
mTrackingId(aParams.mTrackingId),
mCanDecodeBatch(StaticPrefs::media_gmp_decoder_decode_batch()),
mReorderFrames(StaticPrefs::media_gmp_decoder_reorder_frames()) {}
void GMPVideoDecoder::InitTags(nsTArray<nsCString>& aTags) {
if (MP4Decoder::IsH264(mConfig.mMimeType)) {
aTags.AppendElement("h264"_ns);
} else if (VPXDecoder::IsVP8(mConfig.mMimeType)) {
aTags.AppendElement("vp8"_ns);
} else if (VPXDecoder::IsVP9(mConfig.mMimeType)) {
aTags.AppendElement("vp9"_ns);
}
}
nsCString GMPVideoDecoder::GetNodeId() { return SHARED_GMP_DECODING_NODE_ID; }
GMPUniquePtr<GMPVideoEncodedFrame> GMPVideoDecoder::CreateFrame(
MediaRawData* aSample) {
GMPVideoFrame* ftmp = nullptr;
GMPErr err = mHost->CreateFrame(kGMPEncodedVideoFrame, &ftmp);
if (GMP_FAILED(err)) {
return nullptr;
}
GMPUniquePtr<GMPVideoEncodedFrame> frame(
static_cast<GMPVideoEncodedFrame*>(ftmp));
err = frame->CreateEmptyFrame(aSample->Size());
if (GMP_FAILED(err)) {
return nullptr;
}
memcpy(frame->Buffer(), aSample->Data(), frame->Size());
// Convert 4-byte NAL unit lengths to host-endian 4-byte buffer lengths to
// suit the GMP API.
if (mConvertNALUnitLengths) {
const int kNALLengthSize = 4;
uint8_t* buf = frame->Buffer();
while (buf < frame->Buffer() + frame->Size() - kNALLengthSize) {
uint32_t length = BigEndian::readUint32(buf) + kNALLengthSize;
*reinterpret_cast<uint32_t*>(buf) = length;
buf += length;
}
}
frame->SetBufferType(GMP_BufferLength32);
frame->SetEncodedWidth(mConfig.mDisplay.width);
frame->SetEncodedHeight(mConfig.mDisplay.height);
frame->SetTimeStamp(aSample->mTime.ToMicroseconds());
frame->SetCompleteFrame(true);
frame->SetDuration(aSample->mDuration.ToMicroseconds());
frame->SetFrameType(aSample->mKeyframe ? kGMPKeyFrame : kGMPDeltaFrame);
return frame;
}
const VideoInfo& GMPVideoDecoder::GetConfig() const { return mConfig; }
void GMPVideoDecoder::GMPInitDone(GMPVideoDecoderProxy* aGMP,
GMPVideoHost* aHost) {
MOZ_ASSERT(IsOnGMPThread());
if (!aGMP) {
mInitPromise.RejectIfExists(NS_ERROR_DOM_MEDIA_FATAL_ERR, __func__);
return;
}
MOZ_ASSERT(aHost);
if (mInitPromise.IsEmpty()) {
// GMP must have been shutdown while we were waiting for Init operation
// to complete.
aGMP->Close();
return;
}
bool isOpenH264 = aGMP->GetPluginType() == GMPPluginType::OpenH264;
GMPVideoCodec codec;
memset(&codec, 0, sizeof(codec));
codec.mGMPApiVersion = kGMPVersion34;
nsTArray<uint8_t> codecSpecific;
if (MP4Decoder::IsH264(mConfig.mMimeType)) {
codec.mCodecType = kGMPVideoCodecH264;
codecSpecific.AppendElement(0); // mPacketizationMode.
codecSpecific.AppendElements(mConfig.mExtraData->Elements(),
mConfig.mExtraData->Length());
// OpenH264 expects pseudo-AVCC, but others must be passed
// AnnexB for H264.
mConvertToAnnexB = !isOpenH264;
mMaxRefFrames = H264::ComputeMaxRefFrames(mConfig.mExtraData);
} else if (VPXDecoder::IsVP8(mConfig.mMimeType)) {
codec.mCodecType = kGMPVideoCodecVP8;
} else if (VPXDecoder::IsVP9(mConfig.mMimeType)) {
codec.mCodecType = kGMPVideoCodecVP9;
} else {
// Unrecognized mime type
aGMP->Close();
mInitPromise.Reject(NS_ERROR_DOM_MEDIA_FATAL_ERR, __func__);
return;
}
codec.mWidth = mConfig.mImage.width;
codec.mHeight = mConfig.mImage.height;
codec.mUseThreadedDecode = StaticPrefs::media_gmp_decoder_multithreaded();
codec.mLogLevel = GetGMPLibraryLogLevel();
nsresult rv =
aGMP->InitDecode(codec, codecSpecific, this, PR_GetNumberOfProcessors());
if (NS_FAILED(rv)) {
aGMP->Close();
mInitPromise.Reject(NS_ERROR_DOM_MEDIA_FATAL_ERR, __func__);
return;
}
mGMP = aGMP;
mHost = aHost;
// GMP implementations have interpreted the meaning of GMP_BufferLength32
// differently. The OpenH264 GMP expects GMP_BufferLength32 to behave as
// specified in the GMP API, where each buffer is prefixed by a 32-bit
// host-endian buffer length that includes the size of the buffer length
// field. Other existing GMPs currently expect GMP_BufferLength32 (when
// combined with kGMPVideoCodecH264) to mean "like AVCC but restricted to
// 4-byte NAL lengths" (i.e. buffer lengths are specified in big-endian
// and do not include the length of the buffer length field.
mConvertNALUnitLengths = isOpenH264;
mInitPromise.Resolve(TrackInfo::kVideoTrack, __func__);
}
RefPtr<MediaDataDecoder::InitPromise> GMPVideoDecoder::Init() {
MOZ_ASSERT(IsOnGMPThread());
mMPS = do_GetService("@mozilla.org/gecko-media-plugin-service;1");
MOZ_ASSERT(mMPS);
RefPtr<InitPromise> promise(mInitPromise.Ensure(__func__));
nsTArray<nsCString> tags;
InitTags(tags);
UniquePtr<GetGMPVideoDecoderCallback> callback(new GMPInitDoneCallback(this));
if (NS_FAILED(mMPS->GetGMPVideoDecoder(mCrashHelper, &tags, GetNodeId(),
std::move(callback)))) {
mInitPromise.Reject(NS_ERROR_DOM_MEDIA_FATAL_ERR, __func__);
}
return promise;
}
RefPtr<MediaDataDecoder::DecodePromise> GMPVideoDecoder::Decode(
MediaRawData* aSample) {
MOZ_ASSERT(IsOnGMPThread());
RefPtr<MediaRawData> sample(aSample);
if (!mGMP) {
return DecodePromise::CreateAndReject(
MediaResult(NS_ERROR_DOM_MEDIA_FATAL_ERR,
RESULT_DETAIL("mGMP not initialized")),
__func__);
}
if (mTrackingId) {
MediaInfoFlag flag = MediaInfoFlag::None;
flag |= (aSample->mKeyframe ? MediaInfoFlag::KeyFrame
: MediaInfoFlag::NonKeyFrame);
if (mGMP->GetPluginType() == GMPPluginType::OpenH264) {
flag |= MediaInfoFlag::SoftwareDecoding;
}
if (MP4Decoder::IsH264(mConfig.mMimeType)) {
flag |= MediaInfoFlag::VIDEO_H264;
} else if (VPXDecoder::IsVP8(mConfig.mMimeType)) {
flag |= MediaInfoFlag::VIDEO_VP8;
} else if (VPXDecoder::IsVP9(mConfig.mMimeType)) {
flag |= MediaInfoFlag::VIDEO_VP9;
}
mPerformanceRecorder.Start(aSample->mTime.ToMicroseconds(),
"GMPVideoDecoder"_ns, *mTrackingId, flag);
}
GMPUniquePtr<GMPVideoEncodedFrame> frame = CreateFrame(sample);
if (!frame) {
return DecodePromise::CreateAndReject(
MediaResult(NS_ERROR_OUT_OF_MEMORY,
RESULT_DETAIL("CreateFrame returned null")),
__func__);
}
uint64_t frameTimestamp = frame->TimeStamp();
RefPtr<DecodePromise> p = mDecodePromise.Ensure(__func__);
nsTArray<uint8_t> info; // No codec specific per-frame info to pass.
nsresult rv = mGMP->Decode(std::move(frame), false, info, 0);
if (NS_FAILED(rv)) {
mDecodePromise.Reject(MediaResult(NS_ERROR_DOM_MEDIA_DECODE_ERR,
RESULT_DETAIL("mGMP->Decode:%" PRIx32,
static_cast<uint32_t>(rv))),
__func__);
}
// If we have multiple outstanding frames, we need to track which offset
// belongs to which frame. During seek, it is possible to get the same frame
// requested twice, if the old frame is still outstanding. We will simply drop
// the extra decoded frame and request more input if the last outstanding.
mSamples.WithEntryHandle(frameTimestamp, [&](auto entryHandle) {
auto sampleData = MakeUnique<SampleMetadata>(sample);
entryHandle.InsertOrUpdate(std::move(sampleData));
});
return p;
}
RefPtr<MediaDataDecoder::FlushPromise> GMPVideoDecoder::Flush() {
MOZ_ASSERT(IsOnGMPThread());
mDecodePromise.RejectIfExists(NS_ERROR_DOM_MEDIA_CANCELED, __func__);
mDrainPromise.RejectIfExists(NS_ERROR_DOM_MEDIA_CANCELED, __func__);
RefPtr<FlushPromise> p = mFlushPromise.Ensure(__func__);
if (!mGMP || NS_FAILED(mGMP->Reset())) {
// Abort the flush.
mPerformanceRecorder.Record(std::numeric_limits<int64_t>::max());
mFlushPromise.Resolve(true, __func__);
}
return p;
}
RefPtr<MediaDataDecoder::DecodePromise> GMPVideoDecoder::Drain() {
MOZ_ASSERT(IsOnGMPThread());
MOZ_ASSERT(mDecodePromise.IsEmpty(), "Must wait for decoding to complete");
RefPtr<DecodePromise> p = mDrainPromise.Ensure(__func__);
if (!mGMP || NS_FAILED(mGMP->Drain())) {
mDrainPromise.Resolve(DecodedData(), __func__);
}
return p;
}
RefPtr<ShutdownPromise> GMPVideoDecoder::Shutdown() {
mInitPromise.RejectIfExists(NS_ERROR_DOM_MEDIA_CANCELED, __func__);
mFlushPromise.RejectIfExists(NS_ERROR_DOM_MEDIA_CANCELED, __func__);
// Note that this *may* be called from the proxy thread also.
// TODO: If that's the case, then this code is racy.
if (!mGMP) {
return ShutdownPromise::CreateAndResolve(true, __func__);
}
// Note this unblocks flush and drain operations waiting for callbacks.
mGMP->Close();
mGMP = nullptr;
return ShutdownPromise::CreateAndResolve(true, __func__);
}
} // namespace mozilla