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// Copyright 2017 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 CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_MANAGER_ALSA_H_
#define CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_MANAGER_ALSA_H_
#include <memory>
#include <string>
#include "base/macros.h"
#include "base/single_thread_task_runner.h"
#include "chromecast/media/audio/cast_audio_manager.h"
namespace media {
class AlsaWrapper;
}
namespace chromecast {
namespace media {
class CastAudioManagerAlsa : public CastAudioManager {
public:
CastAudioManagerAlsa(
std::unique_ptr<::media::AudioThread> audio_thread,
::media::AudioLogFactory* audio_log_factory,
base::RepeatingCallback<CmaBackendFactory*()> backend_factory_getter,
GetSessionIdCallback get_session_id_callback,
scoped_refptr<base::SingleThreadTaskRunner> browser_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> media_task_runner,
service_manager::Connector* connector,
bool use_mixer);
~CastAudioManagerAlsa() override;
// CastAudioManager implementation.
bool HasAudioInputDevices() override;
void GetAudioInputDeviceNames(
::media::AudioDeviceNames* device_names) override;
::media::AudioParameters GetInputStreamParameters(
const std::string& device_id) override;
private:
enum StreamType {
kStreamPlayback = 0,
kStreamCapture,
};
// CastAudioManager implementation.
::media::AudioInputStream* MakeLinearInputStream(
const ::media::AudioParameters& params,
const std::string& device_id,
const ::media::AudioManager::LogCallback& log_callback) override;
::media::AudioInputStream* MakeLowLatencyInputStream(
const ::media::AudioParameters& params,
const std::string& device_id,
const ::media::AudioManager::LogCallback& log_callback) override;
::media::AudioInputStream* MakeInputStream(
const ::media::AudioParameters& params,
const std::string& device_id);
// Gets a list of available ALSA devices.
void GetAlsaAudioDevices(StreamType type,
::media::AudioDeviceNames* device_names);
// Gets the ALSA devices' names and ids that support streams of the
// given type.
void GetAlsaDevicesInfo(StreamType type,
void** hint,
::media::AudioDeviceNames* device_names);
// Checks if the specific ALSA device is available.
static bool IsAlsaDeviceAvailable(StreamType type, const char* device_name);
static const char* UnwantedDeviceTypeWhenEnumerating(StreamType wanted_type);
std::unique_ptr<::media::AlsaWrapper> wrapper_;
DISALLOW_COPY_AND_ASSIGN(CastAudioManagerAlsa);
};
} // namespace media
} // namespace chromecast
#endif // CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_MANAGER_ALSA_H_