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// 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,
const std::string& input_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;
int input_channels = 0;
if (input_params.IsValid()) {
sample_rate = input_params.sample_rate();
bits_per_sample = input_params.bits_per_sample();
channel_layout = input_params.channel_layout();
input_channels = input_params.input_channels();
buffer_size = std::min(input_params.frames_per_buffer(), buffer_size);
}
return AudioParameters(
AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout, input_channels,
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
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