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// Copyright (c) 2006-2009 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/linux/audio_manager_linux.h"
#include "base/at_exit.h"
#include "base/logging.h"
#include "media/audio/fake_audio_output_stream.h"
#include "media/audio/linux/alsa_output.h"
#include "media/audio/linux/alsa_wrapper.h"
namespace {
AudioManagerLinux* g_audio_manager = NULL;
} // namespace
// Implementation of AudioManager.
bool AudioManagerLinux::HasAudioDevices() {
// TODO(ajwong): Make this actually query audio devices.
return true;
}
AudioOutputStream* AudioManagerLinux::MakeAudioStream(Format format,
int channels,
int sample_rate,
char bits_per_sample) {
// Early return for testing hook. Do this before checking for
// |initialized_|.
if (format == AudioManager::AUDIO_MOCK) {
return FakeAudioOutputStream::MakeFakeStream();
}
if (!initialized_) {
return NULL;
}
// TODO(ajwong): Do we want to be able to configure the device? default
// should work correctly for all mono/stereo, but not surround, which needs
// surround40, surround51, etc.
//
// http://0pointer.de/blog/projects/guide-to-sound-apis.html
AlsaPcmOutputStream* stream =
new AlsaPcmOutputStream(AlsaPcmOutputStream::kDefaultDevice,
format, channels, sample_rate, bits_per_sample,
wrapper_.get(), audio_thread_.message_loop());
// TODO(ajwong): Set up this to clear itself when the stream closes.
active_streams_[stream] = scoped_refptr<AlsaPcmOutputStream>(stream);
return stream;
}
AudioManagerLinux::AudioManagerLinux()
: audio_thread_("AudioThread"),
initialized_(false) {
}
AudioManagerLinux::~AudioManagerLinux() {
}
void AudioManagerLinux::Init() {
initialized_ = audio_thread_.Start();
wrapper_.reset(new AlsaWrapper());
}
void AudioManagerLinux::MuteAll() {
// TODO(ajwong): Implement.
NOTIMPLEMENTED();
}
void AudioManagerLinux::UnMuteAll() {
// TODO(ajwong): Implement.
NOTIMPLEMENTED();
}
// TODO(ajwong): Collapse this with the windows version.
void DestroyAudioManagerLinux(void* not_used) {
delete g_audio_manager;
g_audio_manager = NULL;
}
AudioManager* AudioManager::GetAudioManager() {
if (!g_audio_manager) {
g_audio_manager = new AudioManagerLinux();
g_audio_manager->Init();
base::AtExitManager::RegisterCallback(&DestroyAudioManagerLinux, NULL);
}
return g_audio_manager;
}
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