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| 1 // Copyright 2015 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_BASE_ANDROID_MEDIA_CODEC_AUDIO_DECODER_H_ | |
| 6 #define MEDIA_BASE_ANDROID_MEDIA_CODEC_AUDIO_DECODER_H_ | |
| 7 | |
| 8 #include "media/base/android/media_codec_decoder.h" | |
| 9 | |
| 10 namespace media { | |
| 11 | |
| 12 class AudioTimestampHelper; | |
| 13 | |
| 14 // Audio decoder for MediaCodecPlayer | |
| 15 class MediaCodecAudioDecoder : public MediaCodecDecoder { | |
| 16 public: | |
| 17 // For parameters see media_codec_decoder.h | |
| 18 // update_current_time_cb: callback that reports current playback time. | |
| 19 // Called for each rendered frame. | |
| 20 MediaCodecAudioDecoder( | |
| 21 const scoped_refptr<base::SingleThreadTaskRunner>& media_runner, | |
| 22 const base::Closure& request_data_cb, | |
| 23 const base::Closure& starvation_cb, | |
| 24 const base::Closure& stop_done_cb, | |
| 25 const base::Closure& error_cb, | |
| 26 const SetTimeCallback& update_current_time_cb); | |
| 27 ~MediaCodecAudioDecoder() override; | |
| 28 | |
| 29 const char* class_name() const override; | |
| 30 | |
| 31 bool HasStream() const override; | |
| 32 void SetDemuxerConfigs(const DemuxerConfigs& configs) override; | |
| 33 void Flush() override; | |
| 34 | |
| 35 // Sets the volume of the audio output. | |
| 36 void SetVolume(double volume); | |
| 37 | |
| 38 // Sets the base timestamp for |audio_timestamp_helper_|. | |
| 39 void SetBaseTimestamp(base::TimeDelta base_timestamp); | |
| 40 | |
| 41 protected: | |
| 42 bool IsCodecReconfigureNeeded(const DemuxerConfigs& curr, | |
| 43 const DemuxerConfigs& next) const override; | |
| 44 ConfigStatus ConfigureInternal() override; | |
| 45 void OnOutputFormatChanged() override; | |
| 46 void Render(int buffer_index, | |
| 47 size_t size, | |
| 48 bool render_output, | |
| 49 base::TimeDelta pts, | |
| 50 bool eos_encountered) override; | |
| 51 | |
| 52 private: | |
| 53 // A helper method to set the volume. | |
| 54 void SetVolumeInternal(); | |
| 55 | |
| 56 // Recreates |audio_timestamp_helper_|, called when sampling rate is changed. | |
| 57 void ResetTimestampHelper(); | |
| 58 | |
| 59 // Data. | |
| 60 | |
| 61 // Configuration received from demuxer | |
| 62 DemuxerConfigs configs_; | |
| 63 | |
| 64 // Requested volume | |
| 65 double volume_; | |
| 66 | |
| 67 // Number of bytes per audio frame. Depends on the output format and the | |
| 68 // number of channels. | |
| 69 int bytes_per_frame_; | |
| 70 | |
| 71 // The sampling rate received from decoder. | |
| 72 int output_sampling_rate_; | |
| 73 | |
| 74 // Frame count to sync with audio codec output. | |
| 75 int64 frame_count_; | |
| 76 | |
| 77 // Base timestamp for the |audio_timestamp_helper_|. | |
| 78 base::TimeDelta base_timestamp_; | |
| 79 | |
| 80 // Object to calculate the current audio timestamp for A/V sync. | |
| 81 scoped_ptr<AudioTimestampHelper> audio_timestamp_helper_; | |
| 82 | |
| 83 // Reports current playback time to the callee. | |
| 84 SetTimeCallback update_current_time_cb_; | |
| 85 | |
| 86 DISALLOW_COPY_AND_ASSIGN(MediaCodecAudioDecoder); | |
| 87 }; | |
| 88 | |
| 89 } // namespace media | |
| 90 | |
| 91 #endif // MEDIA_BASE_ANDROID_MEDIA_CODEC_DECODER_H_ | |
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Chromium Code Reviews
Issue 1194423008:
Revert of Audio and video decoders for MediaCodecPlayer (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master