| // 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/macros.h" |
| #include "base/synchronization/lock.h" |
| #include "base/synchronization/waitable_event.h" |
| #include "media/audio/audio_manager_base.h" |
| |
| namespace media { |
| |
| class MuteableAudioOutputStream; |
| |
| // Android implemention of AudioManager. |
| class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase { |
| public: |
| AudioManagerAndroid(std::unique_ptr<AudioThread> audio_thread, |
| AudioLogFactory* audio_log_factory); |
| |
| AudioManagerAndroid(const AudioManagerAndroid&) = delete; |
| AudioManagerAndroid& operator=(const AudioManagerAndroid&) = delete; |
| |
| ~AudioManagerAndroid() override; |
| |
| void InitializeIfNeeded(); |
| |
| // Implementation of AudioManager. |
| bool HasAudioOutputDevices() override; |
| bool HasAudioInputDevices() override; |
| void GetAudioInputDeviceNames(AudioDeviceNames* device_names) override; |
| void GetAudioOutputDeviceNames(AudioDeviceNames* device_names) override; |
| AudioParameters GetInputStreamParameters( |
| const std::string& device_id) override; |
| |
| AudioOutputStream* MakeAudioOutputStream( |
| const AudioParameters& params, |
| const std::string& device_id, |
| const LogCallback& log_callback) override; |
| AudioInputStream* MakeAudioInputStream( |
| const AudioParameters& params, |
| const std::string& device_id, |
| const LogCallback& log_callback) override; |
| void ReleaseOutputStream(AudioOutputStream* stream) override; |
| void ReleaseInputStream(AudioInputStream* stream) override; |
| const char* GetName() override; |
| |
| // Implementation of AudioManagerBase. |
| AudioOutputStream* MakeLinearOutputStream( |
| const AudioParameters& params, |
| const LogCallback& log_callback) override; |
| AudioOutputStream* MakeLowLatencyOutputStream( |
| const AudioParameters& params, |
| const std::string& device_id, |
| const LogCallback& log_callback) override; |
| AudioOutputStream* MakeBitstreamOutputStream( |
| const AudioParameters& params, |
| const std::string& device_id, |
| const LogCallback& log_callback) override; |
| AudioInputStream* MakeLinearInputStream( |
| const AudioParameters& params, |
| const std::string& device_id, |
| const LogCallback& log_callback) override; |
| AudioInputStream* MakeLowLatencyInputStream( |
| const AudioParameters& params, |
| const std::string& device_id, |
| const LogCallback& log_callback) override; |
| |
| // Indicates if there's support for the OpenSLES performance mode keys. See |
| // OpenSLESOutputStream for specific details. Essentially this allows for low |
| // power audio when large buffer sizes can be used. |
| static bool SupportsPerformanceModeForOutput(); |
| |
| void SetMute(JNIEnv* env, |
| const base::android::JavaParamRef<jobject>& obj, |
| jboolean muted); |
| |
| // Sets a volume that applies to all this manager's output audio streams. |
| // This overrides other SetVolume calls (e.g. through AudioHostMsg_SetVolume). |
| void SetOutputVolumeOverride(double volume); |
| bool HasOutputVolumeOverride(double* out_volume) const; |
| |
| // Get the latency introduced by the hardware. It relies on |
| // AudioManager.getOutputLatency, which is both (a) hidden and (b) not |
| // guaranteed to be meaningful. Do not use this, except in the context of |
| // b/80326798 to adjust (hackily) for hardware latency that OpenSLES isn't |
| // otherwise accounting for. |
| base::TimeDelta GetOutputLatency(); |
| |
| bool IsUsingAAudioForTesting() { return UseAAudio(); } |
| |
| protected: |
| void ShutdownOnAudioThread() override; |
| AudioParameters GetPreferredOutputStreamParameters( |
| const std::string& output_device_id, |
| const AudioParameters& input_params) override; |
| |
| private: |
| const base::android::JavaRef<jobject>& GetJavaAudioManager(); |
| bool HasNoAudioInputStreams(); |
| 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); |
| void DoSetVolumeOnAudioThread(double volume); |
| |
| // Returns whether or not we can and should use AAudio. |
| bool UseAAudio(); |
| |
| // Java AudioManager instance. |
| base::android::ScopedJavaGlobalRef<jobject> j_audio_manager_; |
| |
| typedef std::set<MuteableAudioOutputStream*> OutputStreams; |
| OutputStreams streams_; |
| |
| // Enabled when first input stream is created and set to false when last |
| // input stream is destroyed. Also affects the stream type of output streams. |
| bool communication_mode_is_on_; |
| |
| absl::optional<bool> is_aaudio_available_; |
| |
| // If set, overrides volume level on output streams |
| bool output_volume_override_set_; |
| double output_volume_override_; |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_AUDIO_ANDROID_AUDIO_MANAGER_ANDROID_H_ |