OggWriter.h - mozsearch

Enable keyboard shortcuts

/* -*- 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 OggWriter_h_

#define OggWriter_h_

#include "ContainerWriter.h"

#include "OpusTrackEncoder.h"

#include <ogg/ogg.h>

namespace mozilla {

/**

 * WriteEncodedTrack inserts raw packets into Ogg stream (ogg_stream_state), and

 * GetContainerData outputs an ogg_page when enough packets have been written

 * to the Ogg stream.

 * For more details, please reference:

 * http://www.xiph.org/ogg/doc/libogg/encoding.html

*/

class OggWriter : public ContainerWriter {

 public:

  OggWriter();

  ~OggWriter();

  // Write frames into the ogg container. aFlags should be set to END_OF_STREAM

  // for the final set of frames.

  nsresult WriteEncodedTrack(const nsTArray<RefPtr<EncodedFrame>>& aData,

                             uint32_t aFlags = 0) override;

  nsresult GetContainerData(nsTArray<nsTArray<uint8_t>>* aOutputBufs,

                            uint32_t aFlags = 0) override;

  // Check metadata type integrity and reject unacceptable track encoder.

  nsresult SetMetadata(

      const nsTArray<RefPtr<TrackMetadataBase>>& aMetadata) override;

 private:

  nsresult Init();

  nsresult WriteEncodedData(const nsTArray<uint8_t>& aBuffer, int aDuration,

                            uint32_t aFlags = 0);

  void ProduceOggPage(nsTArray<nsTArray<uint8_t>>* aOutputBufs);

  // Store the Medatata from track encoder

  RefPtr<OpusMetadata> mMetadata;

  ogg_stream_state mOggStreamState;

  ogg_page mOggPage;

  ogg_packet mPacket;

};

}  // namespace mozilla

#endif