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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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_FILTERS_OPUS_AUDIO_DECODER_H_ | 5 #ifndef MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_ |
6 #define MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_ | 6 #define MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_ |
7 | 7 |
8 #include "base/callback.h" | 8 #include "base/callback.h" |
9 #include "base/memory/weak_ptr.h" | 9 #include "base/memory/weak_ptr.h" |
10 #include "base/time/time.h" | 10 #include "base/time/time.h" |
11 #include "media/base/audio_decoder.h" | 11 #include "media/base/audio_decoder.h" |
12 #include "media/base/demuxer_stream.h" | 12 #include "media/base/demuxer_stream.h" |
13 #include "media/base/sample_format.h" | 13 #include "media/base/sample_format.h" |
14 | 14 |
15 struct OpusMSDecoder; | 15 struct OpusMSDecoder; |
16 | 16 |
17 namespace base { | 17 namespace base { |
18 class MessageLoopProxy; | 18 class SingleThreadTaskRunner; |
19 } | 19 } |
20 | 20 |
21 namespace media { | 21 namespace media { |
22 | 22 |
23 class AudioBuffer; | 23 class AudioBuffer; |
24 class AudioTimestampHelper; | 24 class AudioTimestampHelper; |
25 class DecoderBuffer; | 25 class DecoderBuffer; |
26 struct QueuedAudioBuffer; | 26 struct QueuedAudioBuffer; |
27 | 27 |
28 class MEDIA_EXPORT OpusAudioDecoder : public AudioDecoder { | 28 class MEDIA_EXPORT OpusAudioDecoder : public AudioDecoder { |
29 public: | 29 public: |
30 explicit OpusAudioDecoder( | 30 explicit OpusAudioDecoder( |
31 const scoped_refptr<base::MessageLoopProxy>& message_loop); | 31 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner); |
32 virtual ~OpusAudioDecoder(); | 32 virtual ~OpusAudioDecoder(); |
33 | 33 |
34 // AudioDecoder implementation. | 34 // AudioDecoder implementation. |
35 virtual void Initialize(DemuxerStream* stream, | 35 virtual void Initialize(DemuxerStream* stream, |
36 const PipelineStatusCB& status_cb, | 36 const PipelineStatusCB& status_cb, |
37 const StatisticsCB& statistics_cb) OVERRIDE; | 37 const StatisticsCB& statistics_cb) OVERRIDE; |
38 virtual void Read(const ReadCB& read_cb) OVERRIDE; | 38 virtual void Read(const ReadCB& read_cb) OVERRIDE; |
39 virtual int bits_per_channel() OVERRIDE; | 39 virtual int bits_per_channel() OVERRIDE; |
40 virtual ChannelLayout channel_layout() OVERRIDE; | 40 virtual ChannelLayout channel_layout() OVERRIDE; |
41 virtual int samples_per_second() OVERRIDE; | 41 virtual int samples_per_second() OVERRIDE; |
42 virtual void Reset(const base::Closure& closure) OVERRIDE; | 42 virtual void Reset(const base::Closure& closure) OVERRIDE; |
43 | 43 |
44 private: | 44 private: |
45 // Reads from the demuxer stream with corresponding callback method. | 45 // Reads from the demuxer stream with corresponding callback method. |
46 void ReadFromDemuxerStream(); | 46 void ReadFromDemuxerStream(); |
47 void BufferReady(DemuxerStream::Status status, | 47 void BufferReady(DemuxerStream::Status status, |
48 const scoped_refptr<DecoderBuffer>& input); | 48 const scoped_refptr<DecoderBuffer>& input); |
49 | 49 |
50 | 50 |
51 bool ConfigureDecoder(); | 51 bool ConfigureDecoder(); |
52 void CloseDecoder(); | 52 void CloseDecoder(); |
53 void ResetTimestampState(); | 53 void ResetTimestampState(); |
54 bool Decode(const scoped_refptr<DecoderBuffer>& input, | 54 bool Decode(const scoped_refptr<DecoderBuffer>& input, |
55 scoped_refptr<AudioBuffer>* output_buffer); | 55 scoped_refptr<AudioBuffer>* output_buffer); |
56 | 56 |
57 scoped_refptr<base::MessageLoopProxy> message_loop_; | 57 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
58 base::WeakPtrFactory<OpusAudioDecoder> weak_factory_; | 58 base::WeakPtrFactory<OpusAudioDecoder> weak_factory_; |
59 base::WeakPtr<OpusAudioDecoder> weak_this_; | 59 base::WeakPtr<OpusAudioDecoder> weak_this_; |
60 | 60 |
61 DemuxerStream* demuxer_stream_; | 61 DemuxerStream* demuxer_stream_; |
62 StatisticsCB statistics_cb_; | 62 StatisticsCB statistics_cb_; |
63 OpusMSDecoder* opus_decoder_; | 63 OpusMSDecoder* opus_decoder_; |
64 | 64 |
65 // Decoded audio format. | 65 // Decoded audio format. |
66 ChannelLayout channel_layout_; | 66 ChannelLayout channel_layout_; |
67 int samples_per_second_; | 67 int samples_per_second_; |
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90 // Timestamp to be subtracted from all the frames. This is typically computed | 90 // Timestamp to be subtracted from all the frames. This is typically computed |
91 // from the CodecDelay value in the container. | 91 // from the CodecDelay value in the container. |
92 base::TimeDelta timestamp_offset_; | 92 base::TimeDelta timestamp_offset_; |
93 | 93 |
94 DISALLOW_IMPLICIT_CONSTRUCTORS(OpusAudioDecoder); | 94 DISALLOW_IMPLICIT_CONSTRUCTORS(OpusAudioDecoder); |
95 }; | 95 }; |
96 | 96 |
97 } // namespace media | 97 } // namespace media |
98 | 98 |
99 #endif // MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_ | 99 #endif // MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_ |
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