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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.
#ifndef MEDIA_AUDIO_LINUX_AUDIO_MANAGER_LINUX_H_
#define MEDIA_AUDIO_LINUX_AUDIO_MANAGER_LINUX_H_
#include <set>
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/threading/thread.h"
#include "media/audio/audio_manager_base.h"
class AlsaWrapper;
class MEDIA_EXPORT AudioManagerLinux : public AudioManagerBase {
public:
AudioManagerLinux();
// Call before using a newly created AudioManagerLinux instance.
virtual void Init() OVERRIDE;
// Implementation of AudioManager.
virtual bool HasAudioOutputDevices() OVERRIDE;
virtual bool HasAudioInputDevices() OVERRIDE;
virtual AudioOutputStream* MakeAudioOutputStream(
const AudioParameters& params) OVERRIDE;
virtual AudioInputStream* MakeAudioInputStream(const AudioParameters& params)
OVERRIDE;
virtual bool CanShowAudioInputSettings() OVERRIDE;
virtual void ShowAudioInputSettings() OVERRIDE;
virtual void GetAudioInputDeviceNames(media::AudioDeviceNames* device_names)
OVERRIDE;
virtual void MuteAll() OVERRIDE;
virtual void UnMuteAll() OVERRIDE;
virtual void ReleaseOutputStream(AudioOutputStream* stream);
protected:
virtual ~AudioManagerLinux();
private:
enum StreamType {
kStreamPlayback = 0,
kStreamCapture,
};
// Gets a list of available ALSA input devices.
void GetAlsaAudioInputDevices(media::AudioDeviceNames* device_names);
// Gets the ALSA devices' names and ids.
void GetAlsaDevicesInfo(void** hint, media::AudioDeviceNames* device_names);
// Checks if the specific ALSA device is available.
bool IsAlsaDeviceAvailable(const char* device_name);
// Returns true if a device is present for the given stream type.
bool HasAnyAlsaAudioDevice(StreamType stream);
scoped_ptr<AlsaWrapper> wrapper_;
std::set<AudioOutputStream*> active_streams_;
DISALLOW_COPY_AND_ASSIGN(AudioManagerLinux);
};
#endif // MEDIA_AUDIO_LINUX_AUDIO_MANAGER_LINUX_H_
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