| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "media/audio/fake_audio_manager.h" |
| |
| namespace media { |
| |
| namespace { |
| |
| const int kDefaultInputBufferSize = 1024; |
| const int kDefaultSampleRate = 48000; |
| |
| } // namespace |
| |
| FakeAudioManager::FakeAudioManager(AudioLogFactory* audio_log_factory) |
| : AudioManagerBase(audio_log_factory) {} |
| |
| FakeAudioManager::~FakeAudioManager() { |
| Shutdown(); |
| } |
| |
| // Implementation of AudioManager. |
| bool FakeAudioManager::HasAudioOutputDevices() { return false; } |
| |
| bool FakeAudioManager::HasAudioInputDevices() { return false; } |
| |
| // Implementation of AudioManagerBase. |
| AudioOutputStream* FakeAudioManager::MakeLinearOutputStream( |
| const AudioParameters& params) { |
| return FakeAudioOutputStream::MakeFakeStream(this, params); |
| } |
| |
| AudioOutputStream* FakeAudioManager::MakeLowLatencyOutputStream( |
| const AudioParameters& params, |
| const std::string& device_id) { |
| return FakeAudioOutputStream::MakeFakeStream(this, params); |
| } |
| |
| AudioInputStream* FakeAudioManager::MakeLinearInputStream( |
| const AudioParameters& params, |
| const std::string& device_id) { |
| return FakeAudioInputStream::MakeFakeStream(this, params); |
| } |
| |
| AudioInputStream* FakeAudioManager::MakeLowLatencyInputStream( |
| const AudioParameters& params, |
| const std::string& device_id) { |
| return FakeAudioInputStream::MakeFakeStream(this, params); |
| } |
| |
| AudioParameters FakeAudioManager::GetPreferredOutputStreamParameters( |
| const std::string& output_device_id, |
| const AudioParameters& input_params) { |
| static const int kDefaultOutputBufferSize = 2048; |
| static const int kDefaultSampleRate = 48000; |
| ChannelLayout channel_layout = CHANNEL_LAYOUT_STEREO; |
| int sample_rate = kDefaultSampleRate; |
| int buffer_size = kDefaultOutputBufferSize; |
| int bits_per_sample = 16; |
| if (input_params.IsValid()) { |
| sample_rate = input_params.sample_rate(); |
| bits_per_sample = input_params.bits_per_sample(); |
| channel_layout = input_params.channel_layout(); |
| buffer_size = std::min(input_params.frames_per_buffer(), buffer_size); |
| } |
| |
| return AudioParameters( |
| AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout, |
| sample_rate, bits_per_sample, buffer_size, AudioParameters::NO_EFFECTS); |
| } |
| |
| AudioParameters FakeAudioManager::GetInputStreamParameters( |
| const std::string& device_id) { |
| return AudioParameters( |
| AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_STEREO, |
| kDefaultSampleRate, 16, kDefaultInputBufferSize); |
| } |
| |
| } // namespace media |