1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef MEDIA_MP2T_ES_PARSER_ADTS_H_
6 #define MEDIA_MP2T_ES_PARSER_ADTS_H_
11 #include "base/callback.h"
12 #include "base/compiler_specific.h"
13 #include "base/memory/scoped_ptr.h"
14 #include "base/time/time.h"
15 #include "media/base/audio_decoder_config.h"
16 #include "media/base/byte_queue.h"
17 #include "media/mp2t/es_parser.h"
20 class AudioTimestampHelper;
22 class StreamParserBuffer;
28 class EsParserAdts : public EsParser {
30 typedef base::Callback<void(const AudioDecoderConfig&)> NewAudioConfigCB;
32 EsParserAdts(const NewAudioConfigCB& new_audio_config_cb,
33 const EmitBufferCB& emit_buffer_cb);
34 virtual ~EsParserAdts();
36 // EsParser implementation.
37 virtual bool Parse(const uint8* buf, int size,
39 base::TimeDelta dts) OVERRIDE;
40 virtual void Flush() OVERRIDE;
41 virtual void Reset() OVERRIDE;
44 // Used to link a PTS with a byte position in the ES stream.
45 typedef std::pair<int, base::TimeDelta> EsPts;
46 typedef std::list<EsPts> EsPtsList;
48 // Signal any audio configuration change (if any).
49 // Return false if the current audio config is not
50 // a supported ADTS audio config.
51 bool UpdateAudioConfiguration(const uint8* adts_header);
53 // Discard some bytes from the ES stream.
54 void DiscardEs(int nbytes);
57 // - to signal a new audio configuration,
58 // - to send ES buffers.
59 NewAudioConfigCB new_audio_config_cb_;
60 EmitBufferCB emit_buffer_cb_;
62 // Bytes of the ES stream that have not been emitted yet.
63 ByteQueue es_byte_queue_;
65 // List of PTS associated with a position in the ES stream.
68 // Interpolated PTS for frames that don't have one.
69 scoped_ptr<AudioTimestampHelper> audio_timestamp_helper_;
72 AudioDecoderConfig last_audio_decoder_config_;
74 DISALLOW_COPY_AND_ASSIGN(EsParserAdts);