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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
/* 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 "ISOMediaWriter.h"
#include "ISOControl.h"
#include "ISOMediaBoxes.h"
#include "ISOTrackMetadata.h"
#include "nsThreadUtils.h"
#include "MediaEncoder.h"
#include "VideoUtils.h"
#include "GeckoProfiler.h"
#undef LOG
#define LOG(args, ...)
namespace mozilla {
const static uint32_t FRAG_DURATION = 2 * USECS_PER_S; // microsecond per unit
ISOMediaWriter::ISOMediaWriter(uint32_t aType, uint32_t aHint)
: ContainerWriter()
, mState(MUXING_HEAD)
, mBlobReady(false)
, mType(0)
{
if (aType & CREATE_AUDIO_TRACK) {
mType |= Audio_Track;
}
if (aType & CREATE_VIDEO_TRACK) {
mType |= Video_Track;
}
mControl = new ISOControl(aHint);
MOZ_COUNT_CTOR(ISOMediaWriter);
}
ISOMediaWriter::~ISOMediaWriter()
{
MOZ_COUNT_DTOR(ISOMediaWriter);
}
nsresult
ISOMediaWriter::RunState()
{
nsresult rv;
switch (mState) {
case MUXING_HEAD:
{
rv = mControl->GenerateFtyp();
NS_ENSURE_SUCCESS(rv, rv);
rv = mControl->GenerateMoov();
NS_ENSURE_SUCCESS(rv, rv);
mState = MUXING_FRAG;
break;
}
case MUXING_FRAG:
{
rv = mControl->GenerateMoof(mType);
NS_ENSURE_SUCCESS(rv, rv);
bool EOS;
if (ReadyToRunState(EOS) && EOS) {
mState = MUXING_DONE;
}
break;
}
case MUXING_DONE:
{
break;
}
}
mBlobReady = true;
return NS_OK;
}
nsresult
ISOMediaWriter::WriteEncodedTrack(const EncodedFrameContainer& aData,
uint32_t aFlags)
{
PROFILER_LABEL("ISOMediaWriter", "WriteEncodedTrack",
js::ProfileEntry::Category::OTHER);
// Muxing complete, it doesn't allowed to reentry again.
if (mState == MUXING_DONE) {
MOZ_ASSERT(false);
return NS_ERROR_FAILURE;
}
FragmentBuffer* frag = nullptr;
uint32_t len = aData.GetEncodedFrames().Length();
if (!len) {
// no frame? why bother to WriteEncodedTrack
return NS_OK;
}
for (uint32_t i = 0; i < len; i++) {
RefPtr<EncodedFrame> frame(aData.GetEncodedFrames()[i]);
EncodedFrame::FrameType type = frame->GetFrameType();
if (type == EncodedFrame::AAC_AUDIO_FRAME ||
type == EncodedFrame::AAC_CSD ||
type == EncodedFrame::AMR_AUDIO_FRAME ||
type == EncodedFrame::AMR_AUDIO_CSD ||
type == EncodedFrame::EVRC_AUDIO_FRAME ||
type == EncodedFrame::EVRC_AUDIO_CSD) {
frag = mAudioFragmentBuffer;
} else if (type == EncodedFrame::AVC_I_FRAME ||
type == EncodedFrame::AVC_P_FRAME ||
type == EncodedFrame::AVC_B_FRAME ||
type == EncodedFrame::AVC_CSD) {
frag = mVideoFragmentBuffer;
} else {
MOZ_ASSERT(0);
return NS_ERROR_FAILURE;
}
frag->AddFrame(frame);
}
// Encoder should send CSD (codec specific data) frame before sending the
// audio/video frames. When CSD data is ready, it is sufficient to generate a
// moov data. If encoder doesn't send CSD yet, muxer needs to wait before
// generating anything.
if (mType & Audio_Track && (!mAudioFragmentBuffer ||
!mAudioFragmentBuffer->HasCSD())) {
return NS_OK;
}
if (mType & Video_Track && (!mVideoFragmentBuffer ||
!mVideoFragmentBuffer->HasCSD())) {
return NS_OK;
}
// Only one FrameType in EncodedFrameContainer so it doesn't need to be
// inside the for-loop.
if (frag && (aFlags & END_OF_STREAM)) {
frag->SetEndOfStream();
}
nsresult rv;
bool EOS;
if (ReadyToRunState(EOS)) {
// Because track encoder won't generate new data after EOS, it needs to make
// sure the state reaches MUXING_DONE when EOS is signaled.
do {
rv = RunState();
} while (EOS && mState != MUXING_DONE);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
bool
ISOMediaWriter::ReadyToRunState(bool& aEOS)
{
aEOS = false;
bool bReadyToMux = true;
if ((mType & Audio_Track) && (mType & Video_Track)) {
if (!mAudioFragmentBuffer->HasEnoughData()) {
bReadyToMux = false;
}
if (!mVideoFragmentBuffer->HasEnoughData()) {
bReadyToMux = false;
}
if (mAudioFragmentBuffer->EOS() && mVideoFragmentBuffer->EOS()) {
aEOS = true;
bReadyToMux = true;
}
} else if (mType == Audio_Track) {
if (!mAudioFragmentBuffer->HasEnoughData()) {
bReadyToMux = false;
}
if (mAudioFragmentBuffer->EOS()) {
aEOS = true;
bReadyToMux = true;
}
} else if (mType == Video_Track) {
if (!mVideoFragmentBuffer->HasEnoughData()) {
bReadyToMux = false;
}
if (mVideoFragmentBuffer->EOS()) {
aEOS = true;
bReadyToMux = true;
}
}
return bReadyToMux;
}
nsresult
ISOMediaWriter::GetContainerData(nsTArray<nsTArray<uint8_t>>* aOutputBufs,
uint32_t aFlags)
{
PROFILER_LABEL("ISOMediaWriter", "GetContainerData",
js::ProfileEntry::Category::OTHER);
if (mBlobReady) {
if (mState == MUXING_DONE) {
mIsWritingComplete = true;
}
mBlobReady = false;
return mControl->GetBufs(aOutputBufs);
}
return NS_OK;
}
nsresult
ISOMediaWriter::SetMetadata(TrackMetadataBase* aMetadata)
{
PROFILER_LABEL("ISOMediaWriter", "SetMetadata",
js::ProfileEntry::Category::OTHER);
if (aMetadata->GetKind() == TrackMetadataBase::METADATA_AAC ||
aMetadata->GetKind() == TrackMetadataBase::METADATA_AMR ||
aMetadata->GetKind() == TrackMetadataBase::METADATA_EVRC) {
mControl->SetMetadata(aMetadata);
mAudioFragmentBuffer = new FragmentBuffer(Audio_Track, FRAG_DURATION);
mControl->SetFragment(mAudioFragmentBuffer);
return NS_OK;
}
if (aMetadata->GetKind() == TrackMetadataBase::METADATA_AVC) {
mControl->SetMetadata(aMetadata);
mVideoFragmentBuffer = new FragmentBuffer(Video_Track, FRAG_DURATION);
mControl->SetFragment(mVideoFragmentBuffer);
return NS_OK;
}
return NS_ERROR_FAILURE;
}
} // namespace mozilla
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