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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,
#include "WebMWriter.h"
#include "EbmlComposer.h"
#include "mozilla/ProfilerLabels.h"
#include "OpusTrackEncoder.h"
namespace mozilla {
WebMWriter::WebMWriter() : mEbmlComposer(new EbmlComposer()) {}
WebMWriter::~WebMWriter() {
// Out-of-line dtor so mEbmlComposer UniquePtr can delete a complete type.
}
nsresult WebMWriter::WriteEncodedTrack(
const nsTArray<RefPtr<EncodedFrame>>& aData, uint32_t aFlags) {
AUTO_PROFILER_LABEL("WebMWriter::WriteEncodedTrack", OTHER);
for (uint32_t i = 0; i < aData.Length(); i++) {
nsresult rv = mEbmlComposer->WriteSimpleBlock(aData.ElementAt(i).get());
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
nsresult WebMWriter::GetContainerData(nsTArray<nsTArray<uint8_t>>* aOutputBufs,
uint32_t aFlags) {
AUTO_PROFILER_LABEL("WebMWriter::GetContainerData", OTHER);
mEbmlComposer->ExtractBuffer(aOutputBufs, aFlags);
if (aFlags & ContainerWriter::FLUSH_NEEDED) {
mIsWritingComplete = true;
}
return NS_OK;
}
nsresult WebMWriter::SetMetadata(
const nsTArray<RefPtr<TrackMetadataBase>>& aMetadata) {
AUTO_PROFILER_LABEL("WebMWriter::SetMetadata", OTHER);
MOZ_DIAGNOSTIC_ASSERT(!aMetadata.IsEmpty());
// Integrity checks
bool bad = false;
for (const RefPtr<TrackMetadataBase>& metadata : aMetadata) {
MOZ_ASSERT(metadata);
if (metadata->GetKind() == TrackMetadataBase::METADATA_VP8) {
VP8Metadata* meta = static_cast<VP8Metadata*>(metadata.get());
if (meta->mWidth == 0 || meta->mHeight == 0 || meta->mDisplayWidth == 0 ||
meta->mDisplayHeight == 0) {
bad = true;
}
}
if (metadata->GetKind() == TrackMetadataBase::METADATA_VORBIS) {
VorbisMetadata* meta = static_cast<VorbisMetadata*>(metadata.get());
if (meta->mSamplingFrequency == 0 || meta->mChannels == 0 ||
meta->mData.IsEmpty()) {
bad = true;
}
}
if (metadata->GetKind() == TrackMetadataBase::METADATA_OPUS) {
OpusMetadata* meta = static_cast<OpusMetadata*>(metadata.get());
if (meta->mSamplingFrequency == 0 || meta->mChannels == 0 ||
meta->mIdHeader.IsEmpty()) {
bad = true;
}
}
}
if (bad) {
return NS_ERROR_FAILURE;
}
// Storing
DebugOnly<bool> hasAudio = false;
DebugOnly<bool> hasVideo = false;
for (const RefPtr<TrackMetadataBase>& metadata : aMetadata) {
MOZ_ASSERT(metadata);
if (metadata->GetKind() == TrackMetadataBase::METADATA_VP8) {
MOZ_ASSERT(!hasVideo);
VP8Metadata* meta = static_cast<VP8Metadata*>(metadata.get());
mEbmlComposer->SetVideoConfig(meta->mWidth, meta->mHeight,
meta->mDisplayWidth, meta->mDisplayHeight);
hasVideo = true;
}
if (metadata->GetKind() == TrackMetadataBase::METADATA_VORBIS) {
MOZ_ASSERT(!hasAudio);
VorbisMetadata* meta = static_cast<VorbisMetadata*>(metadata.get());
mEbmlComposer->SetAudioConfig(meta->mSamplingFrequency, meta->mChannels);
mEbmlComposer->SetAudioCodecPrivateData(meta->mData);
hasAudio = true;
}
if (metadata->GetKind() == TrackMetadataBase::METADATA_OPUS) {
MOZ_ASSERT(!hasAudio);
OpusMetadata* meta = static_cast<OpusMetadata*>(metadata.get());
mEbmlComposer->SetAudioConfig(meta->mSamplingFrequency, meta->mChannels);
mEbmlComposer->SetAudioCodecPrivateData(meta->mIdHeader);
hasAudio = true;
}
}
mEbmlComposer->GenerateHeader();
return NS_OK;
}
} // namespace mozilla