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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.
#ifndef MEDIA_AUDIO_ANDROID_AUDIO_MANAGER_ANDROID_H_
#define MEDIA_AUDIO_ANDROID_AUDIO_MANAGER_ANDROID_H_
#include "base/android/jni_android.h"
#include "media/audio/audio_manager_base.h"
namespace media {
// Android implemention of AudioManager.
class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
public:
AudioManagerAndroid();
// Implementation of AudioManager.
virtual bool HasAudioOutputDevices() OVERRIDE;
virtual bool HasAudioInputDevices() OVERRIDE;
virtual void GetAudioInputDeviceNames(media::AudioDeviceNames* device_names)
OVERRIDE;
virtual AudioParameters GetInputStreamParameters(
const std::string& device_id) OVERRIDE;
virtual AudioOutputStream* MakeAudioOutputStream(
const AudioParameters& params,
const std::string& device_id,
const std::string& input_device_id) OVERRIDE;
virtual AudioInputStream* MakeAudioInputStream(
const AudioParameters& params, const std::string& device_id) OVERRIDE;
virtual void ReleaseOutputStream(AudioOutputStream* stream) OVERRIDE;
virtual void ReleaseInputStream(AudioInputStream* stream) OVERRIDE;
// Implementation of AudioManagerBase.
virtual AudioOutputStream* MakeLinearOutputStream(
const AudioParameters& params) OVERRIDE;
virtual AudioOutputStream* MakeLowLatencyOutputStream(
const AudioParameters& params,
const std::string& device_id,
const std::string& input_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;
static bool RegisterAudioManager(JNIEnv* env);
protected:
virtual ~AudioManagerAndroid();
virtual AudioParameters GetPreferredOutputStreamParameters(
const std::string& output_device_id,
const AudioParameters& input_params) OVERRIDE;
private:
void SetAudioMode(int mode);
void RegisterHeadsetReceiver();
void UnregisterHeadsetReceiver();
int GetNativeOutputSampleRate();
bool IsAudioLowLatencySupported();
int GetAudioLowLatencyOutputFrameSize();
int GetOptimalOutputFrameSize(int sample_rate, int channels);
// Java AudioManager instance.
base::android::ScopedJavaGlobalRef<jobject> j_audio_manager_;
DISALLOW_COPY_AND_ASSIGN(AudioManagerAndroid);
};
} // namespace media
#endif // MEDIA_AUDIO_ANDROID_AUDIO_MANAGER_ANDROID_H_
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