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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef MEDIA_FORMATS_MP2T_ES_PARSER_ADTS_H_ | 5 #ifndef MEDIA_FORMATS_MP2T_ES_PARSER_ADTS_H_ |
6 #define MEDIA_FORMATS_MP2T_ES_PARSER_ADTS_H_ | 6 #define MEDIA_FORMATS_MP2T_ES_PARSER_ADTS_H_ |
7 | 7 |
8 #include <list> | 8 #include <list> |
9 #include <utility> | 9 #include <utility> |
10 | 10 |
11 #include "base/callback.h" | 11 #include "base/callback.h" |
12 #include "base/compiler_specific.h" | 12 #include "base/compiler_specific.h" |
13 #include "base/memory/scoped_ptr.h" | 13 #include "base/memory/scoped_ptr.h" |
14 #include "base/time/time.h" | 14 #include "base/time/time.h" |
15 #include "media/base/audio_decoder_config.h" | 15 #include "media/base/audio_decoder_config.h" |
16 #include "media/base/decrypt_config.h" | |
16 #include "media/base/media_export.h" | 17 #include "media/base/media_export.h" |
17 #include "media/formats/mp2t/es_parser.h" | 18 #include "media/formats/mp2t/es_parser.h" |
18 | 19 |
19 namespace media { | 20 namespace media { |
20 class AudioTimestampHelper; | 21 class AudioTimestampHelper; |
21 class BitReader; | 22 class BitReader; |
22 class OffsetByteQueue; | 23 class OffsetByteQueue; |
23 class StreamParserBuffer; | 24 class StreamParserBuffer; |
24 } | 25 } |
25 | 26 |
26 namespace media { | 27 namespace media { |
27 namespace mp2t { | 28 namespace mp2t { |
28 | 29 |
29 class MEDIA_EXPORT EsParserAdts : public EsParser { | 30 class MEDIA_EXPORT EsParserAdts : public EsParser { |
30 public: | 31 public: |
31 typedef base::Callback<void(const AudioDecoderConfig&)> NewAudioConfigCB; | 32 typedef base::Callback<void(const AudioDecoderConfig&)> NewAudioConfigCB; |
32 | 33 |
33 EsParserAdts(const NewAudioConfigCB& new_audio_config_cb, | 34 EsParserAdts(const NewAudioConfigCB& new_audio_config_cb, |
34 const EmitBufferCB& emit_buffer_cb, | 35 const EmitBufferCB& emit_buffer_cb, |
35 bool sbr_in_mimetype); | 36 bool sbr_in_mimetype); |
37 #ifdef ENABLE_HLS_SAMPLE_AES | |
38 EsParserAdts(const NewAudioConfigCB& new_audio_config_cb, | |
39 const EmitBufferCB& emit_buffer_cb, | |
40 const GetDecryptConfigCB get_decrypt_config_cb, | |
yucliu1
2015/12/11 19:55:31
const GetDecryptConfigCB&
dougsteed
2015/12/14 22:51:46
Done.
| |
41 bool use_hls_sample_aes, | |
42 bool sbr_in_mimetype); | |
43 #endif | |
44 | |
36 ~EsParserAdts() override; | 45 ~EsParserAdts() override; |
37 | 46 |
38 // EsParser implementation. | 47 // EsParser implementation. |
39 void Flush() override; | 48 void Flush() override; |
40 | 49 |
41 private: | 50 private: |
42 struct AdtsFrame; | 51 struct AdtsFrame; |
43 | 52 |
44 // EsParser implementation. | 53 // EsParser implementation. |
45 bool ParseFromEsQueue() override; | 54 bool ParseFromEsQueue() override; |
46 void ResetInternal() override; | 55 void ResetInternal() override; |
47 | 56 |
48 // Synchronize the stream on an ADTS syncword (consuming bytes from | 57 // Synchronize the stream on an ADTS syncword (consuming bytes from |
49 // |es_queue_| if needed). | 58 // |es_queue_| if needed). |
50 // Returns true when a full ADTS frame has been found: in that case | 59 // Returns true when a full ADTS frame has been found: in that case |
51 // |adts_frame| structure is filled up accordingly. | 60 // |adts_frame| structure is filled up accordingly. |
52 // Returns false otherwise (no ADTS syncword found or partial ADTS frame). | 61 // Returns false otherwise (no ADTS syncword found or partial ADTS frame). |
53 bool LookForAdtsFrame(AdtsFrame* adts_frame); | 62 bool LookForAdtsFrame(AdtsFrame* adts_frame); |
54 | 63 |
55 // Skip an ADTS frame in the ES queue. | 64 // Skip an ADTS frame in the ES queue. |
56 void SkipAdtsFrame(const AdtsFrame& adts_frame); | 65 void SkipAdtsFrame(const AdtsFrame& adts_frame); |
57 | 66 |
58 // Signal any audio configuration change (if any). | 67 // Signal any audio configuration change (if any). |
59 // Return false if the current audio config is not | 68 // Return false if the current audio config is not |
60 // a supported ADTS audio config. | 69 // a supported ADTS audio config. |
61 bool UpdateAudioConfiguration(const uint8* adts_header); | 70 bool UpdateAudioConfiguration(const uint8* adts_header); |
62 | 71 |
72 #ifdef ENABLE_HLS_SAMPLE_AES | |
73 void CalculateSubsamplesForAdtsFrame(const AdtsFrame& adts_frame, | |
74 std::vector<SubsampleEntry>* subsamples); | |
75 #endif | |
76 | |
63 // Callbacks: | 77 // Callbacks: |
64 // - to signal a new audio configuration, | 78 // - to signal a new audio configuration, |
65 // - to send ES buffers. | 79 // - to send ES buffers. |
66 NewAudioConfigCB new_audio_config_cb_; | 80 NewAudioConfigCB new_audio_config_cb_; |
67 EmitBufferCB emit_buffer_cb_; | 81 EmitBufferCB emit_buffer_cb_; |
82 #ifdef ENABLE_HLS_SAMPLE_AES | |
83 // - to obtain the current decrypt_config. Only called if use_hls_sample_aes_. | |
84 GetDecryptConfigCB get_decrypt_config_cb_; | |
85 bool use_hls_sample_aes_; | |
86 #endif | |
68 | 87 |
69 // True when AAC SBR extension is signalled in the mimetype | 88 // True when AAC SBR extension is signalled in the mimetype |
70 // (mp4a.40.5 in the codecs parameter). | 89 // (mp4a.40.5 in the codecs parameter). |
71 bool sbr_in_mimetype_; | 90 bool sbr_in_mimetype_; |
72 | 91 |
73 // Interpolated PTS for frames that don't have one. | 92 // Interpolated PTS for frames that don't have one. |
74 scoped_ptr<AudioTimestampHelper> audio_timestamp_helper_; | 93 scoped_ptr<AudioTimestampHelper> audio_timestamp_helper_; |
75 | 94 |
76 // Last audio config. | 95 // Last audio config. |
77 AudioDecoderConfig last_audio_decoder_config_; | 96 AudioDecoderConfig last_audio_decoder_config_; |
78 | 97 |
79 DISALLOW_COPY_AND_ASSIGN(EsParserAdts); | 98 DISALLOW_COPY_AND_ASSIGN(EsParserAdts); |
80 }; | 99 }; |
81 | 100 |
82 } // namespace mp2t | 101 } // namespace mp2t |
83 } // namespace media | 102 } // namespace media |
84 | 103 |
85 #endif | 104 #endif |
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