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// Copyright (c) 2011 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/openbsd/audio_manager_openbsd.h"
#include "base/command_line.h"
#include "base/stl_util.h"
#include "media/audio/audio_output_dispatcher.h"
#include "media/audio/fake_audio_input_stream.h"
#include "media/audio/fake_audio_output_stream.h"
#if defined(USE_PULSEAUDIO)
#include "media/audio/pulse/pulse_output.h"
#endif
#include "media/base/limits.h"
#include "media/base/media_switches.h"
#include <fcntl.h>
// Maximum number of output streams that can be open simultaneously.
static const size_t kMaxOutputStreams = 50;
// Implementation of AudioManager.
static bool HasAudioHardware() {
int fd;
const char *file;
if ((file = getenv("AUDIOCTLDEVICE")) == 0 || *file == '\0')
file = "/dev/audioctl";
if ((fd = open(file, O_RDONLY)) < 0)
return false;
close(fd);
return true;
}
bool AudioManagerOpenBSD::HasAudioOutputDevices() {
return HasAudioHardware();
}
bool AudioManagerOpenBSD::HasAudioInputDevices() {
return HasAudioHardware();
}
AudioOutputStream* AudioManagerOpenBSD::MakeAudioOutputStream(
const AudioParameters& params) {
// Early return for testing hook. Do this before checking for
// |initialized_|.
if (params.format == AudioParameters::AUDIO_MOCK) {
return FakeAudioOutputStream::MakeFakeStream(params);
}
if (!initialized()) {
return NULL;
}
// Don't allow opening more than |kMaxOutputStreams| streams.
if (active_streams_.size() >= kMaxOutputStreams) {
return NULL;
}
AudioOutputStream* stream;
#if defined(USE_PULSEAUDIO)
if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kUsePulseAudio)) {
stream = new PulseAudioOutputStream(params, this);
active_streams_.insert(stream);
return stream;
}
#endif
NOTIMPLEMENTED();
return NULL;
}
AudioInputStream* AudioManagerOpenBSD::MakeAudioInputStream(
const AudioParameters& params, const std::string& device_id) {
NOTIMPLEMENTED();
return NULL;
}
AudioManagerOpenBSD::AudioManagerOpenBSD() {
}
AudioManagerOpenBSD::~AudioManagerOpenBSD() {
// Make sure we stop the thread first. If we allow the default destructor to
// destroy the members, we may destroy audio streams before stopping the
// thread, resulting an unexpected behavior.
// This way we make sure activities of the audio streams are all stopped
// before we destroy them.
audio_thread_.Stop();
// Free output dispatchers, closing all remaining open streams.
output_dispatchers_.clear();
// Delete all the streams. Have to do it manually, we don't have ScopedSet<>,
// and we are not using ScopedVector<> because search there is slow.
STLDeleteElements(&active_streams_);
}
void AudioManagerOpenBSD::Init() {
AudioManagerBase::Init();
}
void AudioManagerOpenBSD::MuteAll() {
NOTIMPLEMENTED();
}
void AudioManagerOpenBSD::UnMuteAll() {
NOTIMPLEMENTED();
}
void AudioManagerOpenBSD::ReleaseOutputStream(AudioOutputStream* stream) {
if (stream) {
active_streams_.erase(stream);
delete stream;
}
}
// static
AudioManager* CreateAudioManager() {
return new AudioManagerOpenBSD();
}
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