1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_ALSA_LINUX_H
#define WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_ALSA_LINUX_H
#include "webrtc/modules/audio_device/audio_device_generic.h"
#include "webrtc/modules/audio_device/linux/audio_mixer_manager_alsa_linux.h"
#include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
#if defined(USE_X11)
#include <X11/Xlib.h>
#endif
#include <alsa/asoundlib.h>
#include <sys/ioctl.h>
#include <sys/soundcard.h>
namespace webrtc
{
class EventWrapper;
class ThreadWrapper;
class AudioDeviceLinuxALSA : public AudioDeviceGeneric
{
public:
AudioDeviceLinuxALSA(const int32_t id);
virtual ~AudioDeviceLinuxALSA();
// Retrieve the currently utilized audio layer
virtual int32_t ActiveAudioLayer(
AudioDeviceModule::AudioLayer& audioLayer) const OVERRIDE;
// Main initializaton and termination
virtual int32_t Init() OVERRIDE;
virtual int32_t Terminate() OVERRIDE;
virtual bool Initialized() const OVERRIDE;
// Device enumeration
virtual int16_t PlayoutDevices() OVERRIDE;
virtual int16_t RecordingDevices() OVERRIDE;
virtual int32_t PlayoutDeviceName(
uint16_t index,
char name[kAdmMaxDeviceNameSize],
char guid[kAdmMaxGuidSize]) OVERRIDE;
virtual int32_t RecordingDeviceName(
uint16_t index,
char name[kAdmMaxDeviceNameSize],
char guid[kAdmMaxGuidSize]) OVERRIDE;
// Device selection
virtual int32_t SetPlayoutDevice(uint16_t index) OVERRIDE;
virtual int32_t SetPlayoutDevice(
AudioDeviceModule::WindowsDeviceType device) OVERRIDE;
virtual int32_t SetRecordingDevice(uint16_t index) OVERRIDE;
virtual int32_t SetRecordingDevice(
AudioDeviceModule::WindowsDeviceType device) OVERRIDE;
// Audio transport initialization
virtual int32_t PlayoutIsAvailable(bool& available) OVERRIDE;
virtual int32_t InitPlayout() OVERRIDE;
virtual bool PlayoutIsInitialized() const OVERRIDE;
virtual int32_t RecordingIsAvailable(bool& available) OVERRIDE;
virtual int32_t InitRecording() OVERRIDE;
virtual bool RecordingIsInitialized() const OVERRIDE;
// Audio transport control
virtual int32_t StartPlayout() OVERRIDE;
virtual int32_t StopPlayout() OVERRIDE;
virtual bool Playing() const OVERRIDE;
virtual int32_t StartRecording() OVERRIDE;
virtual int32_t StopRecording() OVERRIDE;
virtual bool Recording() const OVERRIDE;
// Microphone Automatic Gain Control (AGC)
virtual int32_t SetAGC(bool enable) OVERRIDE;
virtual bool AGC() const OVERRIDE;
// Volume control based on the Windows Wave API (Windows only)
virtual int32_t SetWaveOutVolume(uint16_t volumeLeft,
uint16_t volumeRight) OVERRIDE;
virtual int32_t WaveOutVolume(uint16_t& volumeLeft,
uint16_t& volumeRight) const OVERRIDE;
// Audio mixer initialization
virtual int32_t InitSpeaker() OVERRIDE;
virtual bool SpeakerIsInitialized() const OVERRIDE;
virtual int32_t InitMicrophone() OVERRIDE;
virtual bool MicrophoneIsInitialized() const OVERRIDE;
// Speaker volume controls
virtual int32_t SpeakerVolumeIsAvailable(bool& available) OVERRIDE;
virtual int32_t SetSpeakerVolume(uint32_t volume) OVERRIDE;
virtual int32_t SpeakerVolume(uint32_t& volume) const OVERRIDE;
virtual int32_t MaxSpeakerVolume(uint32_t& maxVolume) const OVERRIDE;
virtual int32_t MinSpeakerVolume(uint32_t& minVolume) const OVERRIDE;
virtual int32_t SpeakerVolumeStepSize(uint16_t& stepSize) const OVERRIDE;
// Microphone volume controls
virtual int32_t MicrophoneVolumeIsAvailable(bool& available) OVERRIDE;
virtual int32_t SetMicrophoneVolume(uint32_t volume) OVERRIDE;
virtual int32_t MicrophoneVolume(uint32_t& volume) const OVERRIDE;
virtual int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const OVERRIDE;
virtual int32_t MinMicrophoneVolume(uint32_t& minVolume) const OVERRIDE;
virtual int32_t MicrophoneVolumeStepSize(
uint16_t& stepSize) const OVERRIDE;
// Speaker mute control
virtual int32_t SpeakerMuteIsAvailable(bool& available) OVERRIDE;
virtual int32_t SetSpeakerMute(bool enable) OVERRIDE;
virtual int32_t SpeakerMute(bool& enabled) const OVERRIDE;
// Microphone mute control
virtual int32_t MicrophoneMuteIsAvailable(bool& available) OVERRIDE;
virtual int32_t SetMicrophoneMute(bool enable) OVERRIDE;
virtual int32_t MicrophoneMute(bool& enabled) const OVERRIDE;
// Microphone boost control
virtual int32_t MicrophoneBoostIsAvailable(bool& available) OVERRIDE;
virtual int32_t SetMicrophoneBoost(bool enable) OVERRIDE;
virtual int32_t MicrophoneBoost(bool& enabled) const OVERRIDE;
// Stereo support
virtual int32_t StereoPlayoutIsAvailable(bool& available) OVERRIDE;
virtual int32_t SetStereoPlayout(bool enable) OVERRIDE;
virtual int32_t StereoPlayout(bool& enabled) const OVERRIDE;
virtual int32_t StereoRecordingIsAvailable(bool& available) OVERRIDE;
virtual int32_t SetStereoRecording(bool enable) OVERRIDE;
virtual int32_t StereoRecording(bool& enabled) const OVERRIDE;
// Delay information and control
virtual int32_t SetPlayoutBuffer(
const AudioDeviceModule::BufferType type,
uint16_t sizeMS) OVERRIDE;
virtual int32_t PlayoutBuffer(
AudioDeviceModule::BufferType& type,
uint16_t& sizeMS) const OVERRIDE;
virtual int32_t PlayoutDelay(uint16_t& delayMS) const OVERRIDE;
virtual int32_t RecordingDelay(uint16_t& delayMS) const OVERRIDE;
// CPU load
virtual int32_t CPULoad(uint16_t& load) const OVERRIDE;
public:
virtual bool PlayoutWarning() const OVERRIDE;
virtual bool PlayoutError() const OVERRIDE;
virtual bool RecordingWarning() const OVERRIDE;
virtual bool RecordingError() const OVERRIDE;
virtual void ClearPlayoutWarning() OVERRIDE;
virtual void ClearPlayoutError() OVERRIDE;
virtual void ClearRecordingWarning() OVERRIDE;
virtual void ClearRecordingError() OVERRIDE;
public:
virtual void AttachAudioBuffer(AudioDeviceBuffer* audioBuffer) OVERRIDE;
private:
int32_t GetDevicesInfo(const int32_t function,
const bool playback,
const int32_t enumDeviceNo = 0,
char* enumDeviceName = NULL,
const int32_t ednLen = 0) const;
int32_t ErrorRecovery(int32_t error, snd_pcm_t* deviceHandle);
private:
bool KeyPressed() const;
private:
void Lock() EXCLUSIVE_LOCK_FUNCTION(_critSect) { _critSect.Enter(); };
void UnLock() UNLOCK_FUNCTION(_critSect) { _critSect.Leave(); };
private:
inline int32_t InputSanityCheckAfterUnlockedPeriod() const;
inline int32_t OutputSanityCheckAfterUnlockedPeriod() const;
private:
static bool RecThreadFunc(void*);
static bool PlayThreadFunc(void*);
bool RecThreadProcess();
bool PlayThreadProcess();
private:
AudioDeviceBuffer* _ptrAudioBuffer;
CriticalSectionWrapper& _critSect;
ThreadWrapper* _ptrThreadRec;
ThreadWrapper* _ptrThreadPlay;
uint32_t _recThreadID;
uint32_t _playThreadID;
int32_t _id;
AudioMixerManagerLinuxALSA _mixerManager;
uint16_t _inputDeviceIndex;
uint16_t _outputDeviceIndex;
bool _inputDeviceIsSpecified;
bool _outputDeviceIsSpecified;
snd_pcm_t* _handleRecord;
snd_pcm_t* _handlePlayout;
snd_pcm_uframes_t _recordingBuffersizeInFrame;
snd_pcm_uframes_t _recordingPeriodSizeInFrame;
snd_pcm_uframes_t _playoutBufferSizeInFrame;
snd_pcm_uframes_t _playoutPeriodSizeInFrame;
ssize_t _recordingBufferSizeIn10MS;
ssize_t _playoutBufferSizeIn10MS;
uint32_t _recordingFramesIn10MS;
uint32_t _playoutFramesIn10MS;
uint32_t _recordingFreq;
uint32_t _playoutFreq;
uint8_t _recChannels;
uint8_t _playChannels;
int8_t* _recordingBuffer; // in byte
int8_t* _playoutBuffer; // in byte
uint32_t _recordingFramesLeft;
uint32_t _playoutFramesLeft;
AudioDeviceModule::BufferType _playBufType;
private:
bool _initialized;
bool _recording;
bool _playing;
bool _recIsInitialized;
bool _playIsInitialized;
bool _AGC;
snd_pcm_sframes_t _recordingDelay;
snd_pcm_sframes_t _playoutDelay;
uint16_t _playWarning;
uint16_t _playError;
uint16_t _recWarning;
uint16_t _recError;
uint16_t _playBufDelay; // playback delay
uint16_t _playBufDelayFixed; // fixed playback delay
char _oldKeyState[32];
#if defined(USE_X11)
Display* _XDisplay;
#endif
};
}
#endif // MODULES_AUDIO_DEVICE_MAIN_SOURCE_LINUX_AUDIO_DEVICE_ALSA_LINUX_H_
|
