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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.
#ifndef MEDIA_AUDIO_PULSE_AUDIO_MANAGER_PULSE_H_
#define MEDIA_AUDIO_PULSE_AUDIO_MANAGER_PULSE_H_
#include <pulse/pulseaudio.h>
#include <string>
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "media/audio/audio_manager_base.h"
namespace media {
class MEDIA_EXPORT AudioManagerPulse : public AudioManagerBase {
public:
AudioManagerPulse(AudioLogFactory* audio_log_factory);
virtual ~AudioManagerPulse();
static AudioManager* Create(AudioLogFactory* audio_log_factory);
// Implementation of AudioManager.
virtual bool HasAudioOutputDevices() OVERRIDE;
virtual bool HasAudioInputDevices() OVERRIDE;
virtual void ShowAudioInputSettings() OVERRIDE;
virtual void GetAudioInputDeviceNames(
AudioDeviceNames* device_names) OVERRIDE;
virtual void GetAudioOutputDeviceNames(
AudioDeviceNames* device_names) OVERRIDE;
virtual AudioParameters GetInputStreamParameters(
const std::string& device_id) OVERRIDE;
// Implementation of AudioManagerBase.
virtual AudioOutputStream* MakeLinearOutputStream(
const AudioParameters& params) OVERRIDE;
virtual AudioOutputStream* MakeLowLatencyOutputStream(
const AudioParameters& params,
const std::string& device_id) OVERRIDE;
virtual AudioInputStream* MakeLinearInputStream(
const AudioParameters& params, const std::string& device_id) OVERRIDE;
virtual AudioInputStream* MakeLowLatencyInputStream(
const AudioParameters& params, const std::string& device_id) OVERRIDE;
protected:
virtual AudioParameters GetPreferredOutputStreamParameters(
const std::string& output_device_id,
const AudioParameters& input_params) OVERRIDE;
private:
bool Init();
void DestroyPulse();
void GetAudioDeviceNames(bool input, media::AudioDeviceNames* device_names);
// Callback to get the devices' info like names, used by GetInputDevices().
static void InputDevicesInfoCallback(pa_context* context,
const pa_source_info* info,
int error, void* user_data);
static void OutputDevicesInfoCallback(pa_context* context,
const pa_sink_info* info,
int error, void* user_data);
// Callback to get the native sample rate of PulseAudio, used by
// GetNativeSampleRate().
static void SampleRateInfoCallback(pa_context* context,
const pa_server_info* info,
void* user_data);
// Called by MakeLinearOutputStream and MakeLowLatencyOutputStream.
AudioOutputStream* MakeOutputStream(const AudioParameters& params,
const std::string& device_id);
// Called by MakeLinearInputStream and MakeLowLatencyInputStream.
AudioInputStream* MakeInputStream(const AudioParameters& params,
const std::string& device_id);
// Gets the native sample rate of Pulse.
int GetNativeSampleRate();
pa_threaded_mainloop* input_mainloop_;
pa_context* input_context_;
AudioDeviceNames* devices_;
int native_input_sample_rate_;
DISALLOW_COPY_AND_ASSIGN(AudioManagerPulse);
};
} // namespace media
#endif // MEDIA_AUDIO_PULSE_AUDIO_MANAGER_PULSE_H_
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