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// Copyright (c) 2012 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 "base/metrics/histogram_macros.h"
#include "base/memory/ptr_util.h"
#include "media/audio/openbsd/audio_manager_openbsd.h"
#include "media/audio/audio_device_description.h"
#include "media/audio/audio_output_dispatcher.h"
#if defined(USE_SNDIO)
#include "media/audio/sndio/sndio_input.h"
#include "media/audio/sndio/sndio_output.h"
#else
#include "media/audio/fake_audio_manager.h"
#endif
#include "media/base/limits.h"
#include "media/base/media_switches.h"
namespace media {
enum OpenBSDAudioIO {
kPulse,
kSndio,
kAudioIOMax = kSndio
};
#if defined(USE_SNDIO)
// Maximum number of output streams that can be open simultaneously.
static const int kMaxOutputStreams = 4;
// Default sample rate for input and output streams.
static const int kDefaultSampleRate = 48000;
void AddDefaultDevice(AudioDeviceNames* device_names) {
DCHECK(device_names->empty());
device_names->push_front(AudioDeviceName::CreateDefault());
}
bool AudioManagerOpenBSD::HasAudioOutputDevices() {
return true;
}
bool AudioManagerOpenBSD::HasAudioInputDevices() {
return true;
}
void AudioManagerOpenBSD::GetAudioInputDeviceNames(
AudioDeviceNames* device_names) {
DCHECK(device_names->empty());
AddDefaultDevice(device_names);
}
void AudioManagerOpenBSD::GetAudioOutputDeviceNames(
AudioDeviceNames* device_names) {
AddDefaultDevice(device_names);
}
#if defined(USE_SNDIO)
const char* AudioManagerOpenBSD::GetName() {
return "SNDIO";
}
#endif
AudioParameters AudioManagerOpenBSD::GetInputStreamParameters(
const std::string& device_id) {
static const int kDefaultInputBufferSize = 1024;
int user_buffer_size = GetUserBufferSize();
int buffer_size = user_buffer_size ?
user_buffer_size : kDefaultInputBufferSize;
return AudioParameters(
AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_STEREO,
kDefaultSampleRate, buffer_size);
}
AudioManagerOpenBSD::AudioManagerOpenBSD(std::unique_ptr<AudioThread> audio_thread,
AudioLogFactory* audio_log_factory)
: AudioManagerBase(std::move(audio_thread),
audio_log_factory) {
DLOG(WARNING) << "AudioManagerOpenBSD";
SetMaxOutputStreamsAllowed(kMaxOutputStreams);
}
AudioManagerOpenBSD::~AudioManagerOpenBSD() {
Shutdown();
}
AudioOutputStream* AudioManagerOpenBSD::MakeLinearOutputStream(
const AudioParameters& params,
const LogCallback& log_callback) {
DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format());
return MakeOutputStream(params);
}
AudioOutputStream* AudioManagerOpenBSD::MakeLowLatencyOutputStream(
const AudioParameters& params,
const std::string& device_id,
const LogCallback& log_callback) {
DLOG_IF(ERROR, !device_id.empty()) << "Not implemented!";
DCHECK_EQ(AudioParameters::AUDIO_PCM_LOW_LATENCY, params.format());
return MakeOutputStream(params);
}
AudioInputStream* AudioManagerOpenBSD::MakeLinearInputStream(
const AudioParameters& params,
const std::string& device_id,
const LogCallback& log_callback) {
DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format());
return MakeInputStream(params);
}
AudioInputStream* AudioManagerOpenBSD::MakeLowLatencyInputStream(
const AudioParameters& params,
const std::string& device_id,
const LogCallback& log_callback) {
DCHECK_EQ(AudioParameters::AUDIO_PCM_LOW_LATENCY, params.format());
return MakeInputStream(params);
}
AudioParameters AudioManagerOpenBSD::GetPreferredOutputStreamParameters(
const std::string& output_device_id,
const AudioParameters& input_params) {
// TODO(tommi): Support |output_device_id|.
DLOG_IF(ERROR, !output_device_id.empty()) << "Not implemented!";
static const int kDefaultOutputBufferSize = 2048;
ChannelLayout channel_layout = CHANNEL_LAYOUT_STEREO;
int sample_rate = kDefaultSampleRate;
int buffer_size = kDefaultOutputBufferSize;
if (input_params.IsValid()) {
sample_rate = input_params.sample_rate();
channel_layout = input_params.channel_layout();
buffer_size = std::min(buffer_size, input_params.frames_per_buffer());
}
int user_buffer_size = GetUserBufferSize();
if (user_buffer_size)
buffer_size = user_buffer_size;
return AudioParameters(
AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout,
sample_rate, buffer_size);
}
AudioInputStream* AudioManagerOpenBSD::MakeInputStream(
const AudioParameters& params) {
DLOG(WARNING) << "MakeInputStream";
return new SndioAudioInputStream(this,
AudioDeviceDescription::kDefaultDeviceId, params);
}
AudioOutputStream* AudioManagerOpenBSD::MakeOutputStream(
const AudioParameters& params) {
DLOG(WARNING) << "MakeOutputStream";
return new SndioAudioOutputStream(params, this);
}
#endif
std::unique_ptr<media::AudioManager> CreateAudioManager(
std::unique_ptr<AudioThread> audio_thread,
AudioLogFactory* audio_log_factory) {
DLOG(WARNING) << "CreateAudioManager";
#if defined(USE_SNDIO)
UMA_HISTOGRAM_ENUMERATION("Media.OpenBSDAudioIO", kSndio, kAudioIOMax + 1);
return std::make_unique<AudioManagerOpenBSD>(std::move(audio_thread),
audio_log_factory);
#else
return std::make_unique<FakeAudioManager>(std::move(audio_thread),
audio_log_factory);
#endif
}
} // namespace media
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