/* -*- 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;

  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