1 // Copyright 2013 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.
5 #include "media/audio/fake_audio_manager.h"
11 const int kDefaultInputBufferSize = 1024;
12 const int kDefaultSampleRate = 48000;
16 FakeAudioManager::FakeAudioManager(AudioLogFactory* audio_log_factory)
17 : AudioManagerBase(audio_log_factory) {}
19 FakeAudioManager::~FakeAudioManager() {
23 // Implementation of AudioManager.
24 bool FakeAudioManager::HasAudioOutputDevices() { return false; }
26 bool FakeAudioManager::HasAudioInputDevices() { return false; }
28 // Implementation of AudioManagerBase.
29 AudioOutputStream* FakeAudioManager::MakeLinearOutputStream(
30 const AudioParameters& params) {
31 return FakeAudioOutputStream::MakeFakeStream(this, params);
34 AudioOutputStream* FakeAudioManager::MakeLowLatencyOutputStream(
35 const AudioParameters& params,
36 const std::string& device_id,
37 const std::string& input_device_id) {
38 return FakeAudioOutputStream::MakeFakeStream(this, params);
41 AudioInputStream* FakeAudioManager::MakeLinearInputStream(
42 const AudioParameters& params,
43 const std::string& device_id) {
44 return FakeAudioInputStream::MakeFakeStream(this, params);
47 AudioInputStream* FakeAudioManager::MakeLowLatencyInputStream(
48 const AudioParameters& params,
49 const std::string& device_id) {
50 return FakeAudioInputStream::MakeFakeStream(this, params);
53 AudioParameters FakeAudioManager::GetPreferredOutputStreamParameters(
54 const std::string& output_device_id,
55 const AudioParameters& input_params) {
56 static const int kDefaultOutputBufferSize = 2048;
57 static const int kDefaultSampleRate = 48000;
58 ChannelLayout channel_layout = CHANNEL_LAYOUT_STEREO;
59 int sample_rate = kDefaultSampleRate;
60 int buffer_size = kDefaultOutputBufferSize;
61 int bits_per_sample = 16;
62 int input_channels = 0;
63 if (input_params.IsValid()) {
64 sample_rate = input_params.sample_rate();
65 bits_per_sample = input_params.bits_per_sample();
66 channel_layout = input_params.channel_layout();
67 input_channels = input_params.input_channels();
68 buffer_size = std::min(input_params.frames_per_buffer(), buffer_size);
71 return AudioParameters(
72 AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout, input_channels,
73 sample_rate, bits_per_sample, buffer_size, AudioParameters::NO_EFFECTS);
76 AudioParameters FakeAudioManager::GetInputStreamParameters(
77 const std::string& device_id) {
78 return AudioParameters(
79 AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_STEREO,
80 kDefaultSampleRate, 16, kDefaultInputBufferSize);