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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/. */
#ifndef WebMWriter_h_
#define WebMWriter_h_
#include "ContainerWriter.h"
#include "nsAutoPtr.h"
namespace mozilla {
class EbmlComposer;
// Vorbis meta data structure
class VorbisMetadata : public TrackMetadataBase
{
public:
nsTArray<uint8_t> mData;
int32_t mChannels;
float mSamplingFrequency;
MetadataKind GetKind() const override { return METADATA_VORBIS; }
};
// VP8 meta data structure
class VP8Metadata : public TrackMetadataBase
{
public:
int32_t mWidth;
int32_t mHeight;
int32_t mDisplayWidth;
int32_t mDisplayHeight;
int32_t mEncodedFrameRate;
MetadataKind GetKind() const override { return METADATA_VP8; }
};
/**
* WebM writer helper
* This class accepts encoder to set audio or video meta data or
* encoded data to ebml Composer, and get muxing data through GetContainerData.
* The ctor/dtor run in the MediaRecorder thread, others run in MediaEncoder thread.
*/
class WebMWriter : public ContainerWriter
{
public:
// aTrackTypes indicate this muxer should multiplex into Video only or A/V foramt.
// Run in MediaRecorder thread
explicit WebMWriter(uint32_t aTrackTypes);
virtual ~WebMWriter();
// WriteEncodedTrack inserts raw packets into WebM stream.
nsresult WriteEncodedTrack(const EncodedFrameContainer &aData,
uint32_t aFlags = 0) override;
// GetContainerData outputs multiplexing data.
// aFlags indicates the muxer should enter into finished stage and flush out
// queue data.
nsresult GetContainerData(nsTArray<nsTArray<uint8_t> >* aOutputBufs,
uint32_t aFlags = 0) override;
// Assign metadata into muxer
nsresult SetMetadata(TrackMetadataBase* aMetadata) override;
private:
nsAutoPtr<EbmlComposer> mEbmlComposer;
// Indicate what kind of meta data needed in the writer.
// If this value become 0, it means writer can start to generate header.
uint8_t mMetadataRequiredFlag;
};
} // namespace mozilla
#endif
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