1 /* 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_MODULES_AUDIO_DEVICE_ANDROID_AUDIO_TRACK_JNI_H_ 12 #define WEBRTC_MODULES_AUDIO_DEVICE_ANDROID_AUDIO_TRACK_JNI_H_ 13 14 #include <jni.h> 15 16 #include "webrtc/system_wrappers/interface/critical_section_wrapper.h" 17 #include "webrtc/modules/audio_device/android/audio_common.h" 18 #include "webrtc/modules/audio_device/include/audio_device_defines.h" 19 #include "webrtc/modules/audio_device/audio_device_generic.h" 20 21 namespace webrtc { 22 23 class EventWrapper; 24 class ThreadWrapper; 25 26 const uint32_t N_PLAY_SAMPLES_PER_SEC = 16000; // Default is 16 kHz 27 const uint32_t N_PLAY_CHANNELS = 1; // default is mono playout 28 29 class AudioTrackJni : public PlayoutDelayProvider { 30 public: 31 static int32_t SetAndroidAudioDeviceObjects(void* javaVM, void* env, 32 void* context); 33 static void ClearAndroidAudioDeviceObjects(); 34 explicit AudioTrackJni(const int32_t id); 35 virtual ~AudioTrackJni(); 36 37 // Main initializaton and termination 38 int32_t Init(); 39 int32_t Terminate(); Initialized()40 bool Initialized() const { return _initialized; } 41 42 // Device enumeration PlayoutDevices()43 int16_t PlayoutDevices() { return 1; } // There is one device only. 44 45 int32_t PlayoutDeviceName(uint16_t index, 46 char name[kAdmMaxDeviceNameSize], 47 char guid[kAdmMaxGuidSize]); 48 49 // Device selection 50 int32_t SetPlayoutDevice(uint16_t index); 51 int32_t SetPlayoutDevice( 52 AudioDeviceModule::WindowsDeviceType device); 53 54 // Audio transport initialization 55 int32_t PlayoutIsAvailable(bool& available); // NOLINT 56 int32_t InitPlayout(); PlayoutIsInitialized()57 bool PlayoutIsInitialized() const { return _playIsInitialized; } 58 59 // Audio transport control 60 int32_t StartPlayout(); 61 int32_t StopPlayout(); Playing()62 bool Playing() const { return _playing; } 63 64 // Audio mixer initialization 65 int32_t InitSpeaker(); SpeakerIsInitialized()66 bool SpeakerIsInitialized() const { return _speakerIsInitialized; } 67 68 // Speaker volume controls 69 int32_t SpeakerVolumeIsAvailable(bool& available); // NOLINT 70 int32_t SetSpeakerVolume(uint32_t volume); 71 int32_t SpeakerVolume(uint32_t& volume) const; // NOLINT 72 int32_t MaxSpeakerVolume(uint32_t& maxVolume) const; // NOLINT 73 int32_t MinSpeakerVolume(uint32_t& minVolume) const; // NOLINT 74 int32_t SpeakerVolumeStepSize(uint16_t& stepSize) const; // NOLINT 75 76 // Speaker mute control 77 int32_t SpeakerMuteIsAvailable(bool& available); // NOLINT 78 int32_t SetSpeakerMute(bool enable); 79 int32_t SpeakerMute(bool& enabled) const; // NOLINT 80 81 82 // Stereo support 83 int32_t StereoPlayoutIsAvailable(bool& available); // NOLINT 84 int32_t SetStereoPlayout(bool enable); 85 int32_t StereoPlayout(bool& enabled) const; // NOLINT 86 87 // Delay information and control 88 int32_t SetPlayoutBuffer(const AudioDeviceModule::BufferType type, 89 uint16_t sizeMS); 90 int32_t PlayoutBuffer(AudioDeviceModule::BufferType& type, // NOLINT 91 uint16_t& sizeMS) const; 92 int32_t PlayoutDelay(uint16_t& delayMS) const; // NOLINT 93 94 // Attach audio buffer 95 void AttachAudioBuffer(AudioDeviceBuffer* audioBuffer); 96 97 int32_t SetPlayoutSampleRate(const uint32_t samplesPerSec); 98 99 // Error and warning information 100 bool PlayoutWarning() const; 101 bool PlayoutError() const; 102 void ClearPlayoutWarning(); 103 void ClearPlayoutError(); 104 105 // Speaker audio routing 106 int32_t SetLoudspeakerStatus(bool enable); 107 int32_t GetLoudspeakerStatus(bool& enable) const; // NOLINT 108 109 protected: PlayoutDelayMs()110 virtual int PlayoutDelayMs() { return 0; } 111 112 private: Lock()113 void Lock() EXCLUSIVE_LOCK_FUNCTION(_critSect) { 114 _critSect.Enter(); 115 } UnLock()116 void UnLock() UNLOCK_FUNCTION(_critSect) { 117 _critSect.Leave(); 118 } 119 120 int32_t InitJavaResources(); 121 int32_t InitSampleRate(); 122 123 static bool PlayThreadFunc(void*); 124 bool PlayThreadProcess(); 125 126 // TODO(leozwang): Android holds only one JVM, all these jni handling 127 // will be consolidated into a single place to make it consistant and 128 // reliable. Chromium has a good example at base/android. 129 static JavaVM* globalJvm; 130 static JNIEnv* globalJNIEnv; 131 static jobject globalContext; 132 static jclass globalScClass; 133 134 JavaVM* _javaVM; // denotes a Java VM 135 JNIEnv* _jniEnvPlay; // The JNI env for playout thread 136 jclass _javaScClass; // AudioDeviceAndroid class 137 jobject _javaScObj; // AudioDeviceAndroid object 138 jobject _javaPlayBuffer; 139 void* _javaDirectPlayBuffer; // Direct buffer pointer to play buffer 140 jmethodID _javaMidPlayAudio; // Method ID of play in AudioDeviceAndroid 141 142 AudioDeviceBuffer* _ptrAudioBuffer; 143 CriticalSectionWrapper& _critSect; 144 int32_t _id; 145 bool _initialized; 146 147 EventWrapper& _timeEventPlay; 148 EventWrapper& _playStartStopEvent; 149 ThreadWrapper* _ptrThreadPlay; 150 uint32_t _playThreadID; 151 bool _playThreadIsInitialized; 152 bool _shutdownPlayThread; 153 bool _playoutDeviceIsSpecified; 154 155 bool _playing; 156 bool _playIsInitialized; 157 bool _speakerIsInitialized; 158 159 bool _startPlay; 160 161 uint16_t _playWarning; 162 uint16_t _playError; 163 164 uint16_t _delayPlayout; 165 166 uint16_t _samplingFreqOut; // Sampling frequency for Speaker 167 uint32_t _maxSpeakerVolume; // The maximum speaker volume value 168 bool _loudSpeakerOn; 169 170 }; 171 172 } // namespace webrtc 173 174 #endif // WEBRTC_MODULES_AUDIO_DEVICE_ANDROID_AUDIO_TRACK_JNI_H_ 175