2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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.
11 #ifndef WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_IOS_H
12 #define WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_IOS_H
14 #include <AudioUnit/AudioUnit.h>
16 #include "webrtc/modules/audio_device/audio_device_generic.h"
17 #include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
22 const uint32_t N_REC_SAMPLES_PER_SEC = 44000;
23 const uint32_t N_PLAY_SAMPLES_PER_SEC = 44000;
25 const uint32_t N_REC_CHANNELS = 1; // default is mono recording
26 const uint32_t N_PLAY_CHANNELS = 1; // default is mono playout
27 const uint32_t N_DEVICE_CHANNELS = 8;
29 const uint32_t ENGINE_REC_BUF_SIZE_IN_SAMPLES = (N_REC_SAMPLES_PER_SEC / 100);
30 const uint32_t ENGINE_PLAY_BUF_SIZE_IN_SAMPLES = (N_PLAY_SAMPLES_PER_SEC / 100);
32 // Number of 10 ms recording blocks in recording buffer
33 const uint16_t N_REC_BUFFERS = 20;
35 class AudioDeviceIOS : public AudioDeviceGeneric {
37 AudioDeviceIOS(const int32_t id);
40 // Retrieve the currently utilized audio layer
41 virtual int32_t ActiveAudioLayer(
42 AudioDeviceModule::AudioLayer& audioLayer) const;
44 // Main initializaton and termination
45 virtual int32_t Init();
46 virtual int32_t Terminate();
47 virtual bool Initialized() const;
50 virtual int16_t PlayoutDevices();
51 virtual int16_t RecordingDevices();
52 virtual int32_t PlayoutDeviceName(uint16_t index,
53 char name[kAdmMaxDeviceNameSize],
54 char guid[kAdmMaxGuidSize]);
55 virtual int32_t RecordingDeviceName(uint16_t index,
56 char name[kAdmMaxDeviceNameSize],
57 char guid[kAdmMaxGuidSize]);
60 virtual int32_t SetPlayoutDevice(uint16_t index);
61 virtual int32_t SetPlayoutDevice(AudioDeviceModule::WindowsDeviceType device);
62 virtual int32_t SetRecordingDevice(uint16_t index);
63 virtual int32_t SetRecordingDevice(
64 AudioDeviceModule::WindowsDeviceType device);
66 // Audio transport initialization
67 virtual int32_t PlayoutIsAvailable(bool& available);
68 virtual int32_t InitPlayout();
69 virtual bool PlayoutIsInitialized() const;
70 virtual int32_t RecordingIsAvailable(bool& available);
71 virtual int32_t InitRecording();
72 virtual bool RecordingIsInitialized() const;
74 // Audio transport control
75 virtual int32_t StartPlayout();
76 virtual int32_t StopPlayout();
77 virtual bool Playing() const;
78 virtual int32_t StartRecording();
79 virtual int32_t StopRecording();
80 virtual bool Recording() const;
82 // Microphone Automatic Gain Control (AGC)
83 virtual int32_t SetAGC(bool enable);
84 virtual bool AGC() const;
86 // Volume control based on the Windows Wave API (Windows only)
87 virtual int32_t SetWaveOutVolume(uint16_t volumeLeft, uint16_t volumeRight);
88 virtual int32_t WaveOutVolume(uint16_t& volumeLeft,
89 uint16_t& volumeRight) const;
91 // Audio mixer initialization
92 virtual int32_t InitSpeaker();
93 virtual bool SpeakerIsInitialized() const;
94 virtual int32_t InitMicrophone();
95 virtual bool MicrophoneIsInitialized() const;
97 // Speaker volume controls
98 virtual int32_t SpeakerVolumeIsAvailable(bool& available);
99 virtual int32_t SetSpeakerVolume(uint32_t volume);
100 virtual int32_t SpeakerVolume(uint32_t& volume) const;
101 virtual int32_t MaxSpeakerVolume(uint32_t& maxVolume) const;
102 virtual int32_t MinSpeakerVolume(uint32_t& minVolume) const;
103 virtual int32_t SpeakerVolumeStepSize(uint16_t& stepSize) const;
105 // Microphone volume controls
106 virtual int32_t MicrophoneVolumeIsAvailable(bool& available);
107 virtual int32_t SetMicrophoneVolume(uint32_t volume);
108 virtual int32_t MicrophoneVolume(uint32_t& volume) const;
109 virtual int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const;
110 virtual int32_t MinMicrophoneVolume(uint32_t& minVolume) const;
111 virtual int32_t MicrophoneVolumeStepSize(uint16_t& stepSize) const;
113 // Microphone mute control
114 virtual int32_t MicrophoneMuteIsAvailable(bool& available);
115 virtual int32_t SetMicrophoneMute(bool enable);
116 virtual int32_t MicrophoneMute(bool& enabled) const;
118 // Speaker mute control
119 virtual int32_t SpeakerMuteIsAvailable(bool& available);
120 virtual int32_t SetSpeakerMute(bool enable);
121 virtual int32_t SpeakerMute(bool& enabled) const;
123 // Microphone boost control
124 virtual int32_t MicrophoneBoostIsAvailable(bool& available);
125 virtual int32_t SetMicrophoneBoost(bool enable);
126 virtual int32_t MicrophoneBoost(bool& enabled) const;
129 virtual int32_t StereoPlayoutIsAvailable(bool& available);
130 virtual int32_t SetStereoPlayout(bool enable);
131 virtual int32_t StereoPlayout(bool& enabled) const;
132 virtual int32_t StereoRecordingIsAvailable(bool& available);
133 virtual int32_t SetStereoRecording(bool enable);
134 virtual int32_t StereoRecording(bool& enabled) const;
136 // Delay information and control
137 virtual int32_t SetPlayoutBuffer(const AudioDeviceModule::BufferType type,
139 virtual int32_t PlayoutBuffer(AudioDeviceModule::BufferType& type,
140 uint16_t& sizeMS) const;
141 virtual int32_t PlayoutDelay(uint16_t& delayMS) const;
142 virtual int32_t RecordingDelay(uint16_t& delayMS) const;
145 virtual int32_t CPULoad(uint16_t& load) const;
148 virtual bool PlayoutWarning() const;
149 virtual bool PlayoutError() const;
150 virtual bool RecordingWarning() const;
151 virtual bool RecordingError() const;
152 virtual void ClearPlayoutWarning();
153 virtual void ClearPlayoutError();
154 virtual void ClearRecordingWarning();
155 virtual void ClearRecordingError();
158 virtual void AttachAudioBuffer(AudioDeviceBuffer* audioBuffer);
160 // Reset Audio Device (for mobile devices only)
161 virtual int32_t ResetAudioDevice();
163 // enable or disable loud speaker (for iphone only)
164 virtual int32_t SetLoudspeakerStatus(bool enable);
165 virtual int32_t GetLoudspeakerStatus(bool& enabled) const;
181 int32_t InitPlayOrRecord();
182 int32_t ShutdownPlayOrRecord();
184 void UpdateRecordingDelay();
185 void UpdatePlayoutDelay();
187 static OSStatus RecordProcess(void *inRefCon,
188 AudioUnitRenderActionFlags *ioActionFlags,
189 const AudioTimeStamp *timeStamp,
191 UInt32 inNumberFrames,
192 AudioBufferList *ioData);
194 static OSStatus PlayoutProcess(void *inRefCon,
195 AudioUnitRenderActionFlags *ioActionFlags,
196 const AudioTimeStamp *timeStamp,
198 UInt32 inNumberFrames,
199 AudioBufferList *ioData);
201 OSStatus RecordProcessImpl(AudioUnitRenderActionFlags *ioActionFlags,
202 const AudioTimeStamp *timeStamp,
203 uint32_t inBusNumber,
204 uint32_t inNumberFrames);
206 OSStatus PlayoutProcessImpl(uint32_t inNumberFrames,
207 AudioBufferList *ioData);
209 static bool RunCapture(void* ptrThis);
210 bool CaptureWorkerThread();
213 AudioDeviceBuffer* _ptrAudioBuffer;
215 CriticalSectionWrapper& _critSect;
217 ThreadWrapper* _captureWorkerThread;
218 uint32_t _captureWorkerThreadId;
222 AudioUnit _auVoiceProcessing;
223 void* _audioInterruptionObserver;
230 bool _recIsInitialized;
231 bool _playIsInitialized;
233 bool _recordingDeviceIsSpecified;
234 bool _playoutDeviceIsSpecified;
235 bool _micIsInitialized;
236 bool _speakerIsInitialized;
240 // The sampling rate to use with Audio Device Buffer
241 uint32_t _adbSampFreq;
244 uint32_t _recordingDelay;
245 uint32_t _playoutDelay;
246 uint32_t _playoutDelayMeasurementCounter;
247 uint32_t _recordingDelayHWAndOS;
248 uint32_t _recordingDelayMeasurementCounter;
250 // Errors and warnings count
251 uint16_t _playWarning;
253 uint16_t _recWarning;
256 // Playout buffer, needed for 44.0 / 44.1 kHz mismatch
257 int16_t _playoutBuffer[ENGINE_PLAY_BUF_SIZE_IN_SAMPLES];
258 uint32_t _playoutBufferUsed; // How much is filled
261 int16_t _recordingBuffer[N_REC_BUFFERS][ENGINE_REC_BUF_SIZE_IN_SAMPLES];
262 uint32_t _recordingLength[N_REC_BUFFERS];
263 uint32_t _recordingSeqNumber[N_REC_BUFFERS];
264 uint32_t _recordingCurrentSeq;
266 // Current total size all data in buffers, used for delay estimate
267 uint32_t _recordingBufferTotalSize;
270 } // namespace webrtc
272 #endif // WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_IOS_H