blob: 39998ecf24f320c0e8b45fe20e9437803f4399fb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
// Copyright 2014 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_FORMATS_MP2T_ES_PARSER_ADTS_H_
#define MEDIA_FORMATS_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/media_export.h"
#include "media/formats/mp2t/es_parser.h"
namespace media {
class AudioTimestampHelper;
class BitReader;
class OffsetByteQueue;
class StreamParserBuffer;
}
namespace media {
namespace mp2t {
class MEDIA_EXPORT EsParserAdts : public EsParser {
public:
typedef base::Callback<void(const AudioDecoderConfig&)> NewAudioConfigCB;
EsParserAdts(const NewAudioConfigCB& new_audio_config_cb,
const EmitBufferCB& emit_buffer_cb,
bool sbr_in_mimetype);
virtual ~EsParserAdts();
// EsParser implementation.
virtual void Flush() override;
private:
struct AdtsFrame;
// EsParser implementation.
virtual bool ParseFromEsQueue() override;
virtual void ResetInternal() override;
// Synchronize the stream on an ADTS syncword (consuming bytes from
// |es_queue_| if needed).
// Returns true when a full ADTS frame has been found: in that case
// |adts_frame| structure is filled up accordingly.
// Returns false otherwise (no ADTS syncword found or partial ADTS frame).
bool LookForAdtsFrame(AdtsFrame* adts_frame);
// Skip an ADTS frame in the ES queue.
void SkipAdtsFrame(const AdtsFrame& adts_frame);
// 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);
// Callbacks:
// - to signal a new audio configuration,
// - to send ES buffers.
NewAudioConfigCB new_audio_config_cb_;
EmitBufferCB emit_buffer_cb_;
// True when AAC SBR extension is signalled in the mimetype
// (mp4a.40.5 in the codecs parameter).
bool sbr_in_mimetype_;
// 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
|
