1 /* 2 * Copyright (c) 2012 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_VOICE_ENGINE_TRANSMIT_MIXER_H 12 #define WEBRTC_VOICE_ENGINE_TRANSMIT_MIXER_H 13 14 #include "webrtc/common_audio/resampler/include/push_resampler.h" 15 #include "webrtc/common_types.h" 16 #include "webrtc/modules/audio_processing/typing_detection.h" 17 #include "webrtc/modules/interface/module_common_types.h" 18 #include "webrtc/modules/utility/interface/file_player.h" 19 #include "webrtc/modules/utility/interface/file_recorder.h" 20 #include "webrtc/system_wrappers/interface/scoped_ptr.h" 21 #include "webrtc/voice_engine/include/voe_base.h" 22 #include "webrtc/voice_engine/level_indicator.h" 23 #include "webrtc/voice_engine/monitor_module.h" 24 #include "webrtc/voice_engine/voice_engine_defines.h" 25 26 namespace webrtc { 27 28 class AudioProcessing; 29 class ProcessThread; 30 class VoEExternalMedia; 31 class VoEMediaProcess; 32 33 namespace voe { 34 35 class ChannelManager; 36 class MixedAudio; 37 class Statistics; 38 39 class TransmitMixer : public MonitorObserver, 40 public FileCallback { 41 public: 42 static int32_t Create(TransmitMixer*& mixer, uint32_t instanceId); 43 44 static void Destroy(TransmitMixer*& mixer); 45 46 int32_t SetEngineInformation(ProcessThread& processThread, 47 Statistics& engineStatistics, 48 ChannelManager& channelManager); 49 50 int32_t SetAudioProcessingModule( 51 AudioProcessing* audioProcessingModule); 52 53 int32_t PrepareDemux(const void* audioSamples, 54 uint32_t nSamples, 55 uint8_t nChannels, 56 uint32_t samplesPerSec, 57 uint16_t totalDelayMS, 58 int32_t clockDrift, 59 uint16_t currentMicLevel, 60 bool keyPressed); 61 62 63 int32_t DemuxAndMix(); 64 // Used by the Chrome to pass the recording data to the specific VoE 65 // channels for demux. 66 void DemuxAndMix(const int voe_channels[], int number_of_voe_channels); 67 68 int32_t EncodeAndSend(); 69 // Used by the Chrome to pass the recording data to the specific VoE 70 // channels for encoding and sending to the network. 71 void EncodeAndSend(const int voe_channels[], int number_of_voe_channels); 72 73 // Must be called on the same thread as PrepareDemux(). 74 uint32_t CaptureLevel() const; 75 76 int32_t StopSend(); 77 78 // VoEDtmf 79 void UpdateMuteMicrophoneTime(uint32_t lengthMs); 80 81 // VoEExternalMedia 82 int RegisterExternalMediaProcessing(VoEMediaProcess* object, 83 ProcessingTypes type); 84 int DeRegisterExternalMediaProcessing(ProcessingTypes type); 85 86 int GetMixingFrequency(); 87 88 // VoEVolumeControl 89 int SetMute(bool enable); 90 91 bool Mute() const; 92 93 int8_t AudioLevel() const; 94 95 int16_t AudioLevelFullRange() const; 96 97 bool IsRecordingCall(); 98 99 bool IsRecordingMic(); 100 101 int StartPlayingFileAsMicrophone(const char* fileName, 102 bool loop, 103 FileFormats format, 104 int startPosition, 105 float volumeScaling, 106 int stopPosition, 107 const CodecInst* codecInst); 108 109 int StartPlayingFileAsMicrophone(InStream* stream, 110 FileFormats format, 111 int startPosition, 112 float volumeScaling, 113 int stopPosition, 114 const CodecInst* codecInst); 115 116 int StopPlayingFileAsMicrophone(); 117 118 int IsPlayingFileAsMicrophone() const; 119 120 int StartRecordingMicrophone(const char* fileName, 121 const CodecInst* codecInst); 122 123 int StartRecordingMicrophone(OutStream* stream, 124 const CodecInst* codecInst); 125 126 int StopRecordingMicrophone(); 127 128 int StartRecordingCall(const char* fileName, const CodecInst* codecInst); 129 130 int StartRecordingCall(OutStream* stream, const CodecInst* codecInst); 131 132 int StopRecordingCall(); 133 134 void SetMixWithMicStatus(bool mix); 135 136 int32_t RegisterVoiceEngineObserver(VoiceEngineObserver& observer); 137 138 virtual ~TransmitMixer(); 139 140 // MonitorObserver 141 void OnPeriodicProcess(); 142 143 144 // FileCallback 145 void PlayNotification(int32_t id, 146 uint32_t durationMs); 147 148 void RecordNotification(int32_t id, 149 uint32_t durationMs); 150 151 void PlayFileEnded(int32_t id); 152 153 void RecordFileEnded(int32_t id); 154 155 #ifdef WEBRTC_VOICE_ENGINE_TYPING_DETECTION 156 // Typing detection 157 int TimeSinceLastTyping(int &seconds); 158 int SetTypingDetectionParameters(int timeWindow, 159 int costPerTyping, 160 int reportingThreshold, 161 int penaltyDecay, 162 int typeEventDelay); 163 #endif 164 165 void EnableStereoChannelSwapping(bool enable); 166 bool IsStereoChannelSwappingEnabled(); 167 168 private: 169 TransmitMixer(uint32_t instanceId); 170 171 // Gets the maximum sample rate and number of channels over all currently 172 // sending codecs. 173 void GetSendCodecInfo(int* max_sample_rate, int* max_channels); 174 175 void GenerateAudioFrame(const int16_t audioSamples[], 176 int nSamples, 177 int nChannels, 178 int samplesPerSec); 179 int32_t RecordAudioToFile(uint32_t mixingFrequency); 180 181 int32_t MixOrReplaceAudioWithFile( 182 int mixingFrequency); 183 184 void ProcessAudio(int delay_ms, int clock_drift, int current_mic_level, 185 bool key_pressed); 186 187 #ifdef WEBRTC_VOICE_ENGINE_TYPING_DETECTION 188 void TypingDetection(bool keyPressed); 189 #endif 190 191 // uses 192 Statistics* _engineStatisticsPtr; 193 ChannelManager* _channelManagerPtr; 194 AudioProcessing* audioproc_; 195 VoiceEngineObserver* _voiceEngineObserverPtr; 196 ProcessThread* _processThreadPtr; 197 198 // owns 199 MonitorModule _monitorModule; 200 AudioFrame _audioFrame; 201 PushResampler<int16_t> resampler_; // ADM sample rate -> mixing rate 202 FilePlayer* _filePlayerPtr; 203 FileRecorder* _fileRecorderPtr; 204 FileRecorder* _fileCallRecorderPtr; 205 int _filePlayerId; 206 int _fileRecorderId; 207 int _fileCallRecorderId; 208 bool _filePlaying; 209 bool _fileRecording; 210 bool _fileCallRecording; 211 voe::AudioLevel _audioLevel; 212 // protect file instances and their variables in MixedParticipants() 213 CriticalSectionWrapper& _critSect; 214 CriticalSectionWrapper& _callbackCritSect; 215 216 #ifdef WEBRTC_VOICE_ENGINE_TYPING_DETECTION 217 webrtc::TypingDetection _typingDetection; 218 bool _typingNoiseWarningPending; 219 bool _typingNoiseDetected; 220 #endif 221 bool _saturationWarning; 222 223 int _instanceId; 224 bool _mixFileWithMicrophone; 225 uint32_t _captureLevel; 226 VoEMediaProcess* external_postproc_ptr_; 227 VoEMediaProcess* external_preproc_ptr_; 228 bool _mute; 229 int32_t _remainingMuteMicTimeMs; 230 bool stereo_codec_; 231 bool swap_stereo_channels_; 232 scoped_ptr<int16_t[]> mono_buffer_; 233 }; 234 235 } // namespace voe 236 237 } // namespace webrtc 238 239 #endif // WEBRTC_VOICE_ENGINE_TRANSMIT_MIXER_H 240
