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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_MP2T_ES_PARSER_ADTS_H_
#define MEDIA_MP2T_ES_PARSER_ADTS_H_
#include <list>
#include <utility>
#include "base/callback.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
#include "media/base/audio_decoder_config.h"
#include "media/base/byte_queue.h"
#include "media/mp2t/es_parser.h"
namespace media {
class AudioTimestampHelper;
class BitReader;
class StreamParserBuffer;
}
namespace media {
namespace mp2t {
class EsParserAdts : public EsParser {
public:
typedef base::Callback<void(const AudioDecoderConfig&)> NewAudioConfigCB;
EsParserAdts(const NewAudioConfigCB& new_audio_config_cb,
const EmitBufferCB& emit_buffer_cb);
virtual ~EsParserAdts();
// EsParser implementation.
virtual bool Parse(const uint8* buf, int size,
base::TimeDelta pts,
base::TimeDelta dts) OVERRIDE;
virtual void Flush() OVERRIDE;
virtual void Reset() OVERRIDE;
private:
// Used to link a PTS with a byte position in the ES stream.
typedef std::pair<int, base::TimeDelta> EsPts;
typedef std::list<EsPts> EsPtsList;
// Signal any audio configuration change (if any).
// Return false if the current audio config is not
// a supported ADTS audio config.
bool UpdateAudioConfiguration(const uint8* adts_header);
// Discard some bytes from the ES stream.
void DiscardEs(int nbytes);
// Callbacks:
// - to signal a new audio configuration,
// - to send ES buffers.
NewAudioConfigCB new_audio_config_cb_;
EmitBufferCB emit_buffer_cb_;
// Bytes of the ES stream that have not been emitted yet.
ByteQueue es_byte_queue_;
// List of PTS associated with a position in the ES stream.
EsPtsList pts_list_;
// Interpolated PTS for frames that don't have one.
scoped_ptr<AudioTimestampHelper> audio_timestamp_helper_;
// Last audio config.
AudioDecoderConfig last_audio_decoder_config_;
DISALLOW_COPY_AND_ASSIGN(EsParserAdts);
};
} // namespace mp2t
} // namespace media
#endif
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