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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 <set>
#include "base/android/jni_android.h"
#include "base/gtest_prod_util.h"
#include "base/synchronization/lock.h"
#include "media/audio/audio_manager_base.h"
namespace media {
class OpenSLESOutputStream;
// Android implemention of AudioManager.
class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
public:
AudioManagerAndroid(AudioLogFactory* audio_log_factory);
// Implementation of AudioManager.
virtual bool HasAudioOutputDevices() OVERRIDE;
virtual bool HasAudioInputDevices() OVERRIDE;
virtual void GetAudioInputDeviceNames(
AudioDeviceNames* device_names) OVERRIDE;
virtual void GetAudioOutputDeviceNames(
AudioDeviceNames* device_names) OVERRIDE;
virtual AudioParameters GetInputStreamParameters(
const std::string& device_id) OVERRIDE;
virtual AudioOutputStream* MakeAudioOutputStream(
const AudioParameters& params,
const std::string& 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) 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);
void SetMute(JNIEnv* env, jobject obj, jboolean muted);
protected:
virtual ~AudioManagerAndroid();
virtual AudioParameters GetPreferredOutputStreamParameters(
const std::string& output_device_id,
const AudioParameters& input_params) OVERRIDE;
private:
bool HadNoAudioStreams();
void Init();
void Close();
void SetCommunicationAudioModeOn(bool on);
bool SetAudioDevice(const std::string& device_id);
int GetNativeOutputSampleRate();
bool IsAudioLowLatencySupported();
int GetAudioLowLatencyOutputFrameSize();
int GetOptimalOutputFrameSize(int sample_rate, int channels);
void DoSetMuteOnAudioThread(bool muted);
// Allow the AudioAndroidTest to access private methods.
FRIEND_TEST_ALL_PREFIXES(AudioAndroidOutputTest, IsAudioLowLatencySupported);
// Java AudioManager instance.
base::android::ScopedJavaGlobalRef<jobject> j_audio_manager_;
typedef std::set<OpenSLESOutputStream*> OutputStreams;
OutputStreams streams_;
// TODO(wjia): remove this lock once unit test modules are fixed to call
// AudioManager::MakeAudioOutputStream on the audio thread. For now, this
// lock is used to guard access to |streams_|.
base::Lock streams_lock_;
DISALLOW_COPY_AND_ASSIGN(AudioManagerAndroid);
};
} // namespace media
#endif // MEDIA_AUDIO_ANDROID_AUDIO_MANAGER_ANDROID_H_
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