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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_ | |
6 #define MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_ | |
7 | |
8 #include "base/callback.h" | |
9 #include "base/macros.h" | |
10 #include "base/time/time.h" | |
11 #include "media/base/audio_decoder.h" | |
12 #include "media/base/demuxer_stream.h" | |
13 #include "media/base/sample_format.h" | |
14 | |
15 struct OpusMSDecoder; | |
16 | |
17 namespace base { | |
18 class SingleThreadTaskRunner; | |
19 } | |
20 | |
21 namespace media { | |
22 | |
23 class AudioBuffer; | |
24 class AudioDiscardHelper; | |
25 class DecoderBuffer; | |
26 struct QueuedAudioBuffer; | |
27 | |
28 class MEDIA_EXPORT OpusAudioDecoder : public AudioDecoder { | |
29 public: | |
30 explicit OpusAudioDecoder( | |
31 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner); | |
32 ~OpusAudioDecoder() override; | |
33 | |
34 // AudioDecoder implementation. | |
35 std::string GetDisplayName() const override; | |
36 void Initialize(const AudioDecoderConfig& config, | |
37 CdmContext* cdm_context, | |
38 const InitCB& init_cb, | |
39 const OutputCB& output_cb) override; | |
40 void Decode(const scoped_refptr<DecoderBuffer>& buffer, | |
41 const DecodeCB& decode_cb) override; | |
42 void Reset(const base::Closure& closure) override; | |
43 | |
44 private: | |
45 // Reads from the demuxer stream with corresponding callback method. | |
46 void ReadFromDemuxerStream(); | |
47 void DecodeBuffer(const scoped_refptr<DecoderBuffer>& input, | |
48 const DecodeCB& decode_cb); | |
49 | |
50 bool ConfigureDecoder(); | |
51 void CloseDecoder(); | |
52 void ResetTimestampState(); | |
53 bool Decode(const scoped_refptr<DecoderBuffer>& input, | |
54 scoped_refptr<AudioBuffer>* output_buffer); | |
55 | |
56 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | |
57 | |
58 AudioDecoderConfig config_; | |
59 OutputCB output_cb_; | |
60 OpusMSDecoder* opus_decoder_; | |
61 std::unique_ptr<AudioDiscardHelper> discard_helper_; | |
62 | |
63 DISALLOW_IMPLICIT_CONSTRUCTORS(OpusAudioDecoder); | |
64 }; | |
65 | |
66 } // namespace media | |
67 | |
68 #endif // MEDIA_FILTERS_OPUS_AUDIO_DECODER_H_ | |
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