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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 #include "components/audio_modem/audio_player_impl.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 #include <string> | |
| 9 | |
| 10 #include "base/bind.h" | |
| 11 #include "base/location.h" | |
| 12 #include "base/logging.h" | |
| 13 #include "components/audio_modem/public/audio_modem_types.h" | |
| 14 #include "media/audio/audio_manager.h" | |
| 15 #include "media/base/audio_bus.h" | |
| 16 #include "media/base/audio_parameters.h" | |
| 17 | |
| 18 namespace { | |
| 19 | |
| 20 const int kDefaultFrameCount = 1024; | |
| 21 const double kOutputVolumePercent = 1.0f; | |
| 22 | |
| 23 } // namespace | |
| 24 | |
| 25 namespace audio_modem { | |
| 26 | |
| 27 // Public methods. | |
| 28 | |
| 29 AudioPlayerImpl::AudioPlayerImpl() | |
| 30 : is_playing_(false), stream_(nullptr), frame_index_(0) { | |
| 31 } | |
| 32 | |
| 33 AudioPlayerImpl::~AudioPlayerImpl() { | |
| 34 } | |
| 35 | |
| 36 void AudioPlayerImpl::Initialize() { | |
| 37 media::AudioManager::Get()->GetTaskRunner()->PostTask( | |
| 38 FROM_HERE, | |
| 39 base::Bind(&AudioPlayerImpl::InitializeOnAudioThread, | |
| 40 base::Unretained(this))); | |
| 41 } | |
| 42 | |
| 43 void AudioPlayerImpl::Play( | |
| 44 const scoped_refptr<media::AudioBusRefCounted>& samples) { | |
| 45 media::AudioManager::Get()->GetTaskRunner()->PostTask( | |
| 46 FROM_HERE, | |
| 47 base::Bind(&AudioPlayerImpl::PlayOnAudioThread, | |
| 48 base::Unretained(this), | |
| 49 samples)); | |
| 50 } | |
| 51 | |
| 52 void AudioPlayerImpl::Stop() { | |
| 53 media::AudioManager::Get()->GetTaskRunner()->PostTask( | |
| 54 FROM_HERE, | |
| 55 base::Bind(&AudioPlayerImpl::StopOnAudioThread, base::Unretained(this))); | |
| 56 } | |
| 57 | |
| 58 void AudioPlayerImpl::Finalize() { | |
| 59 media::AudioManager::Get()->GetTaskRunner()->PostTask( | |
| 60 FROM_HERE, | |
| 61 base::Bind(&AudioPlayerImpl::FinalizeOnAudioThread, | |
| 62 base::Unretained(this))); | |
| 63 } | |
| 64 | |
| 65 // Private methods. | |
| 66 | |
| 67 void AudioPlayerImpl::InitializeOnAudioThread() { | |
| 68 DCHECK(media::AudioManager::Get()->GetTaskRunner()->BelongsToCurrentThread()); | |
| 69 stream_ = output_stream_for_testing_ | |
| 70 ? output_stream_for_testing_.get() | |
| 71 : media::AudioManager::Get()->MakeAudioOutputStreamProxy( | |
| 72 media::AudioParameters( | |
| 73 media::AudioParameters::AUDIO_PCM_LOW_LATENCY, | |
| 74 media::CHANNEL_LAYOUT_MONO, | |
| 75 kDefaultSampleRate, | |
| 76 kDefaultBitsPerSample, | |
| 77 kDefaultFrameCount), | |
| 78 std::string()); | |
| 79 | |
| 80 if (!stream_ || !stream_->Open()) { | |
| 81 LOG(ERROR) << "Failed to open an output stream."; | |
| 82 if (stream_) { | |
| 83 stream_->Close(); | |
| 84 stream_ = nullptr; | |
| 85 } | |
| 86 return; | |
| 87 } | |
| 88 stream_->SetVolume(kOutputVolumePercent); | |
| 89 } | |
| 90 | |
| 91 void AudioPlayerImpl::PlayOnAudioThread( | |
| 92 const scoped_refptr<media::AudioBusRefCounted>& samples) { | |
| 93 DCHECK(media::AudioManager::Get()->GetTaskRunner()->BelongsToCurrentThread()); | |
| 94 if (!stream_ || is_playing_) | |
| 95 return; | |
| 96 | |
| 97 { | |
| 98 base::AutoLock al(state_lock_); | |
| 99 samples_ = samples; | |
| 100 frame_index_ = 0; | |
| 101 } | |
| 102 | |
| 103 VLOG(3) << "Starting playback."; | |
| 104 is_playing_ = true; | |
| 105 stream_->Start(this); | |
| 106 } | |
| 107 | |
| 108 void AudioPlayerImpl::StopOnAudioThread() { | |
| 109 DCHECK(media::AudioManager::Get()->GetTaskRunner()->BelongsToCurrentThread()); | |
| 110 if (!stream_ || !is_playing_) | |
| 111 return; | |
| 112 | |
| 113 VLOG(3) << "Stopping playback."; | |
| 114 stream_->Stop(); | |
| 115 is_playing_ = false; | |
| 116 } | |
| 117 | |
| 118 void AudioPlayerImpl::StopAndCloseOnAudioThread() { | |
| 119 DCHECK(media::AudioManager::Get()->GetTaskRunner()->BelongsToCurrentThread()); | |
| 120 if (!stream_) | |
| 121 return; | |
| 122 | |
| 123 StopOnAudioThread(); | |
| 124 stream_->Close(); | |
| 125 stream_ = nullptr; | |
| 126 } | |
| 127 | |
| 128 void AudioPlayerImpl::FinalizeOnAudioThread() { | |
| 129 DCHECK(media::AudioManager::Get()->GetTaskRunner()->BelongsToCurrentThread()); | |
| 130 StopAndCloseOnAudioThread(); | |
| 131 delete this; | |
| 132 } | |
| 133 | |
| 134 int AudioPlayerImpl::OnMoreData(media::AudioBus* dest, | |
| 135 uint32_t /* total_bytes_delay */, | |
| 136 uint32_t /* frames_skipped */) { | |
| 137 base::AutoLock al(state_lock_); | |
| 138 // Continuously play our samples till explicitly told to stop. | |
| 139 const int leftover_frames = samples_->frames() - frame_index_; | |
| 140 const int frames_to_copy = std::min(dest->frames(), leftover_frames); | |
| 141 | |
| 142 samples_->CopyPartialFramesTo(frame_index_, frames_to_copy, 0, dest); | |
| 143 frame_index_ += frames_to_copy; | |
| 144 | |
| 145 // If we didn't fill the destination audio bus, wrap around and fill the rest. | |
| 146 if (leftover_frames <= dest->frames()) { | |
| 147 samples_->CopyPartialFramesTo( | |
| 148 0, dest->frames() - frames_to_copy, frames_to_copy, dest); | |
| 149 frame_index_ = dest->frames() - frames_to_copy; | |
| 150 } | |
| 151 | |
| 152 return dest->frames(); | |
| 153 } | |
| 154 | |
| 155 void AudioPlayerImpl::OnError(media::AudioOutputStream* /* stream */) { | |
| 156 LOG(ERROR) << "Error during system sound reproduction."; | |
| 157 media::AudioManager::Get()->GetTaskRunner()->PostTask( | |
| 158 FROM_HERE, | |
| 159 base::Bind(&AudioPlayerImpl::StopAndCloseOnAudioThread, | |
| 160 base::Unretained(this))); | |
| 161 } | |
| 162 | |
| 163 } // namespace audio_modem | |
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Chromium Code Reviews
Issue 2131993002:
Delete the audio modem and copresence private APIs. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@eol