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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_MPEG_MPEG_AUDIO_STREAM_PARSER_BASE_H_ | 5 #ifndef MEDIA_FORMATS_MPEG_MPEG_AUDIO_STREAM_PARSER_BASE_H_ |
6 #define MEDIA_FORMATS_MPEG_MPEG_AUDIO_STREAM_PARSER_BASE_H_ | 6 #define MEDIA_FORMATS_MPEG_MPEG_AUDIO_STREAM_PARSER_BASE_H_ |
7 | 7 |
8 #include <set> | 8 #include <set> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
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31 ~MPEGAudioStreamParserBase() override; | 31 ~MPEGAudioStreamParserBase() override; |
32 | 32 |
33 // StreamParser implementation. | 33 // StreamParser implementation. |
34 void Init(const InitCB& init_cb, | 34 void Init(const InitCB& init_cb, |
35 const NewConfigCB& config_cb, | 35 const NewConfigCB& config_cb, |
36 const NewBuffersCB& new_buffers_cb, | 36 const NewBuffersCB& new_buffers_cb, |
37 bool ignore_text_tracks, | 37 bool ignore_text_tracks, |
38 const EncryptedMediaInitDataCB& encrypted_media_init_data_cb, | 38 const EncryptedMediaInitDataCB& encrypted_media_init_data_cb, |
39 const NewMediaSegmentCB& new_segment_cb, | 39 const NewMediaSegmentCB& new_segment_cb, |
40 const base::Closure& end_of_segment_cb, | 40 const base::Closure& end_of_segment_cb, |
41 const LogCB& log_cb) override; | 41 const scoped_refptr<MediaLog>& media_log) override; |
42 void Flush() override; | 42 void Flush() override; |
43 bool Parse(const uint8* buf, int size) override; | 43 bool Parse(const uint8* buf, int size) override; |
44 | 44 |
45 protected: | 45 protected: |
46 // Subclasses implement this method to parse format specific frame headers. | 46 // Subclasses implement this method to parse format specific frame headers. |
47 // |data| & |size| describe the data available for parsing. | 47 // |data| & |size| describe the data available for parsing. |
48 // | 48 // |
49 // Implementations are expected to consume an entire frame header. It should | 49 // Implementations are expected to consume an entire frame header. It should |
50 // only return a value greater than 0 when |data| has enough bytes to | 50 // only return a value greater than 0 when |data| has enough bytes to |
51 // successfully parse & consume the entire frame header. | 51 // successfully parse & consume the entire frame header. |
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74 // 0 : If more data is needed to parse the entire frame header. | 74 // 0 : If more data is needed to parse the entire frame header. |
75 // < 0 : An error was encountered during parsing. | 75 // < 0 : An error was encountered during parsing. |
76 virtual int ParseFrameHeader(const uint8* data, | 76 virtual int ParseFrameHeader(const uint8* data, |
77 int size, | 77 int size, |
78 int* frame_size, | 78 int* frame_size, |
79 int* sample_rate, | 79 int* sample_rate, |
80 ChannelLayout* channel_layout, | 80 ChannelLayout* channel_layout, |
81 int* sample_count, | 81 int* sample_count, |
82 bool* metadata_frame) const = 0; | 82 bool* metadata_frame) const = 0; |
83 | 83 |
84 const LogCB& log_cb() const { return log_cb_; } | 84 const scoped_refptr<MediaLog>& media_log() const { return media_log_; } |
85 | 85 |
86 private: | 86 private: |
87 enum State { | 87 enum State { |
88 UNINITIALIZED, | 88 UNINITIALIZED, |
89 INITIALIZED, | 89 INITIALIZED, |
90 PARSE_ERROR | 90 PARSE_ERROR |
91 }; | 91 }; |
92 | 92 |
93 void ChangeState(State state); | 93 void ChangeState(State state); |
94 | 94 |
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130 // Returns true if the buffers are sent successfully. | 130 // Returns true if the buffers are sent successfully. |
131 bool SendBuffers(BufferQueue* buffers, bool end_of_segment); | 131 bool SendBuffers(BufferQueue* buffers, bool end_of_segment); |
132 | 132 |
133 State state_; | 133 State state_; |
134 | 134 |
135 InitCB init_cb_; | 135 InitCB init_cb_; |
136 NewConfigCB config_cb_; | 136 NewConfigCB config_cb_; |
137 NewBuffersCB new_buffers_cb_; | 137 NewBuffersCB new_buffers_cb_; |
138 NewMediaSegmentCB new_segment_cb_; | 138 NewMediaSegmentCB new_segment_cb_; |
139 base::Closure end_of_segment_cb_; | 139 base::Closure end_of_segment_cb_; |
140 LogCB log_cb_; | 140 scoped_refptr<MediaLog> media_log_; |
141 | 141 |
142 ByteQueue queue_; | 142 ByteQueue queue_; |
143 | 143 |
144 AudioDecoderConfig config_; | 144 AudioDecoderConfig config_; |
145 scoped_ptr<AudioTimestampHelper> timestamp_helper_; | 145 scoped_ptr<AudioTimestampHelper> timestamp_helper_; |
146 bool in_media_segment_; | 146 bool in_media_segment_; |
147 const uint32 start_code_mask_; | 147 const uint32 start_code_mask_; |
148 const AudioCodec audio_codec_; | 148 const AudioCodec audio_codec_; |
149 const int codec_delay_; | 149 const int codec_delay_; |
150 | 150 |
151 DISALLOW_COPY_AND_ASSIGN(MPEGAudioStreamParserBase); | 151 DISALLOW_COPY_AND_ASSIGN(MPEGAudioStreamParserBase); |
152 }; | 152 }; |
153 | 153 |
154 } // namespace media | 154 } // namespace media |
155 | 155 |
156 #endif // MEDIA_FORMATS_MPEG_MPEG_AUDIO_STREAM_PARSER_BASE_H_ | 156 #endif // MEDIA_FORMATS_MPEG_MPEG_AUDIO_STREAM_PARSER_BASE_H_ |
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