1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef MEDIA_AUDIO_ANDROID_AUDIO_MANAGER_ANDROID_H_
6 #define MEDIA_AUDIO_ANDROID_AUDIO_MANAGER_ANDROID_H_
10 #include "base/android/jni_android.h"
11 #include "base/gtest_prod_util.h"
12 #include "base/synchronization/lock.h"
13 #include "media/audio/audio_manager_base.h"
17 class OpenSLESOutputStream;
19 // Android implemention of AudioManager.
20 class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
22 AudioManagerAndroid(AudioLogFactory* audio_log_factory);
24 // Implementation of AudioManager.
25 virtual bool HasAudioOutputDevices() OVERRIDE;
26 virtual bool HasAudioInputDevices() OVERRIDE;
27 virtual void GetAudioInputDeviceNames(
28 AudioDeviceNames* device_names) OVERRIDE;
29 virtual void GetAudioOutputDeviceNames(
30 AudioDeviceNames* device_names) OVERRIDE;
31 virtual AudioParameters GetInputStreamParameters(
32 const std::string& device_id) OVERRIDE;
34 virtual AudioOutputStream* MakeAudioOutputStream(
35 const AudioParameters& params,
36 const std::string& device_id) OVERRIDE;
37 virtual AudioInputStream* MakeAudioInputStream(
38 const AudioParameters& params,
39 const std::string& device_id) OVERRIDE;
40 virtual void ReleaseOutputStream(AudioOutputStream* stream) OVERRIDE;
41 virtual void ReleaseInputStream(AudioInputStream* stream) OVERRIDE;
43 // Implementation of AudioManagerBase.
44 virtual AudioOutputStream* MakeLinearOutputStream(
45 const AudioParameters& params) OVERRIDE;
46 virtual AudioOutputStream* MakeLowLatencyOutputStream(
47 const AudioParameters& params,
48 const std::string& device_id) OVERRIDE;
49 virtual AudioInputStream* MakeLinearInputStream(
50 const AudioParameters& params,
51 const std::string& device_id) OVERRIDE;
52 virtual AudioInputStream* MakeLowLatencyInputStream(
53 const AudioParameters& params,
54 const std::string& device_id) OVERRIDE;
56 static bool RegisterAudioManager(JNIEnv* env);
58 void SetMute(JNIEnv* env, jobject obj, jboolean muted);
61 virtual ~AudioManagerAndroid();
63 virtual AudioParameters GetPreferredOutputStreamParameters(
64 const std::string& output_device_id,
65 const AudioParameters& input_params) OVERRIDE;
68 bool HasNoAudioInputStreams();
71 void SetCommunicationAudioModeOn(bool on);
72 bool SetAudioDevice(const std::string& device_id);
73 int GetNativeOutputSampleRate();
74 bool IsAudioLowLatencySupported();
75 int GetAudioLowLatencyOutputFrameSize();
76 int GetOptimalOutputFrameSize(int sample_rate, int channels);
78 void DoSetMuteOnAudioThread(bool muted);
80 // Allow the AudioAndroidTest to access private methods.
81 FRIEND_TEST_ALL_PREFIXES(AudioAndroidOutputTest, IsAudioLowLatencySupported);
83 // Java AudioManager instance.
84 base::android::ScopedJavaGlobalRef<jobject> j_audio_manager_;
86 typedef std::set<OpenSLESOutputStream*> OutputStreams;
87 OutputStreams streams_;
88 // TODO(wjia): remove this lock once unit test modules are fixed to call
89 // AudioManager::MakeAudioOutputStream on the audio thread. For now, this
90 // lock is used to guard access to |streams_|.
91 base::Lock streams_lock_;
93 // Enabled when first input stream is created and set to false when last
94 // input stream is destroyed. Also affects the stream type of output streams.
95 bool communication_mode_is_on_;
97 DISALLOW_COPY_AND_ASSIGN(AudioManagerAndroid);
102 #endif // MEDIA_AUDIO_ANDROID_AUDIO_MANAGER_ANDROID_H_