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
260
261
262
263
|
/*
SuperCollider real time audio synthesis system
Copyright (c) 2002 James McCartney. All rights reserved.
http://www.audiosynth.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _SC_CoreAudio_
#define _SC_CoreAudio_
#include "MsgFifo.h"
#include "SC_FifoMsg.h"
#include "OSC_Packet.h"
#include "SC_SyncCondition.h"
#include "PriorityQueue.h"
#include "SC_Lock.h"
#define SC_AUDIO_API_COREAUDIO 1
#define SC_AUDIO_API_JACK 2
#define SC_AUDIO_API_PORTAUDIO 3
#ifdef SC_WIN32
# define SC_AUDIO_API SC_AUDIO_API_PORTAUDIO
#endif
#ifndef SC_AUDIO_API
# define SC_AUDIO_API SC_AUDIO_API_COREAUDIO
#endif // SC_AUDIO_API
#if SC_AUDIO_API == SC_AUDIO_API_COREAUDIO
# include <CoreAudio/AudioHardware.h>
# include <CoreAudio/HostTime.h>
#endif
#if SC_AUDIO_API == SC_AUDIO_API_JACK
# include <jack/jack.h>
class SC_JackPortList;
#endif
#if SC_AUDIO_API == SC_AUDIO_API_PORTAUDIO
#include "portaudio.h"
#endif
struct SC_ScheduledEvent
{
SC_ScheduledEvent() : mTime(0), mPacket(0) {}
SC_ScheduledEvent(struct World *inWorld, int64 inTime, OSC_Packet *inPacket)
: mTime(inTime), mPacket(inPacket), mWorld(inWorld) {}
int64 Time() { return mTime; }
void Perform();
int64 mTime;
OSC_Packet *mPacket;
struct World *mWorld;
};
typedef MsgFifo<FifoMsg, 1024> EngineFifo;
class SC_AudioDriver
{
protected:
int64 mOSCincrement;
struct World *mWorld;
double mOSCtoSamples;
int mSampleTime;
// Common members
uint32 mHardwareBufferSize; // bufferSize returned by kAudioDevicePropertyBufferSize
EngineFifo mFromEngine, mToEngine;
SC_SyncCondition mAudioSync;
pthread_t mThread;
bool mRunThreadFlag;
uint32 mSafetyOffset;
PriorityQueueT<SC_ScheduledEvent, 2048> mScheduler;
SC_Lock *mProcessPacketLock;
int mNumSamplesPerCallback;
uint32 mPreferredHardwareBufferFrameSize;
uint32 mPreferredSampleRate;
double mBuffersPerSecond;
double mAvgCPU, mPeakCPU;
int mPeakCounter, mMaxPeakCounter;
double mOSCincrementNumerator;
double mStartHostSecs;
double mPrevHostSecs;
double mStartSampleTime;
double mPrevSampleTime;
double mSmoothSampleRate;
double mSampleRate;
// Driver interface methods, implemented by subclasses
virtual bool DriverSetup(int* outNumSamplesPerCallback, double* outSampleRate) = 0;
virtual bool DriverStart() = 0;
virtual bool DriverStop() = 0;
public:
// Common methods
SC_AudioDriver(struct World *inWorld);
virtual ~SC_AudioDriver();
int64 mOSCbuftime;
bool Setup();
bool Start();
bool Stop();
void ClearSched() { mScheduler.Empty(); }
void Lock() { mProcessPacketLock->Lock(); }
void Unlock() { mProcessPacketLock->Unlock(); }
void RunNonRealTime(float *in, float *out, int numSamples, int64 oscTime);
void* RunThread();
int SafetyOffset() const { return mSafetyOffset; }
int NumSamplesPerCallback() const { return mNumSamplesPerCallback; }
void SetPreferredHardwareBufferFrameSize(int inSize)
{
mPreferredHardwareBufferFrameSize = inSize;
}
void SetPreferredSampleRate(int inRate)
{
mPreferredSampleRate = inRate;
}
bool SendMsgToEngine(FifoMsg& inMsg);
bool SendMsgFromEngine(FifoMsg& inMsg);
void AddEvent(SC_ScheduledEvent& event) { mScheduler.Add(event); }
double GetAvgCPU() const { return mAvgCPU; }
double GetPeakCPU() const { return mPeakCPU; }
double GetSampleRate() const { return mSampleRate; }
double GetActualSampleRate() const { return mSmoothSampleRate; }
};
// the following classes should be split out into separate source files.
#if SC_AUDIO_API == SC_AUDIO_API_COREAUDIO
class SC_CoreAudioDriver : public SC_AudioDriver
{
AudioBufferList * mInputBufList;
AudioDeviceID mInputDevice;
AudioDeviceID mOutputDevice;
AudioStreamBasicDescription inputStreamDesc; // info about the default device
AudioStreamBasicDescription outputStreamDesc; // info about the default device
friend OSStatus appIOProc ( AudioDeviceID inDevice,
const AudioTimeStamp* inNow,
const AudioBufferList* inInputData,
const AudioTimeStamp* inInputTime,
AudioBufferList* outOutputData,
const AudioTimeStamp* inOutputTime,
void* defptr);
protected:
// Driver interface methods
virtual bool DriverSetup(int* outNumSamplesPerCallback, double* outSampleRate);
virtual bool DriverStart();
virtual bool DriverStop();
public:
SC_CoreAudioDriver(struct World *inWorld);
virtual ~SC_CoreAudioDriver();
void Run(const AudioBufferList* inInputData, AudioBufferList* outOutputData, int64 oscTime);
bool UseInput() { return mInputDevice != kAudioDeviceUnknown; }
bool UseSeparateIO() { return UseInput() && mInputDevice != mOutputDevice; }
AudioDeviceID InputDevice() { return mInputDevice; }
AudioDeviceID OutputDevice() { return mOutputDevice; }
void SetInputBufferList(AudioBufferList * inBufList) { mInputBufList = inBufList; }
AudioBufferList* GetInputBufferList() const { return mInputBufList; }
};
inline SC_AudioDriver* SC_NewAudioDriver(struct World *inWorld)
{
return new SC_CoreAudioDriver(inWorld);
}
#endif // SC_AUDIO_API_COREAUDIO
#if SC_AUDIO_API == SC_AUDIO_API_JACK
class SC_JackDriver : public SC_AudioDriver
{
jack_client_t *mClient;
SC_JackPortList *mInputList;
SC_JackPortList *mOutputList;
int64 mMaxOutputLatency;
protected:
// Driver interface methods
virtual bool DriverSetup(int* outNumSamplesPerCallback, double* outSampleRate);
virtual bool DriverStart();
virtual bool DriverStop();
public:
SC_JackDriver(struct World *inWorld);
virtual ~SC_JackDriver();
void Run();
void BufferSizeChanged(int numSamples);
void SampleRateChanged(double sampleRate);
void GraphOrderChanged();
};
inline SC_AudioDriver* SC_NewAudioDriver(struct World *inWorld)
{
return new SC_JackDriver(inWorld);
}
#endif // SC_AUDIO_API_JACK
#if SC_AUDIO_API == SC_AUDIO_API_PORTAUDIO
class SC_PortAudioDriver : public SC_AudioDriver
{
int mInputChannelCount, mOutputChannelCount;
PaStream *mStream;
protected:
// Driver interface methods
virtual bool DriverSetup(int* outNumSamplesPerCallback, double* outSampleRate);
virtual bool DriverStart();
virtual bool DriverStop();
public:
SC_PortAudioDriver(struct World *inWorld);
virtual ~SC_PortAudioDriver();
int PortAudioCallback( const void *input, void *output,
unsigned long frameCount, const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags );
};
inline SC_AudioDriver* SC_NewAudioDriver(struct World *inWorld)
{
return new SC_PortAudioDriver(inWorld);
}
#endif // SC_AUDIO_API_PORTAUDIO
#endif
|
