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common: prevent buffer overflow
[supercollider.git] / server / scsynth / SC_CoreAudio.cpp
blob383a94a1088e6b8d504c0a4a7c7dd38942e30d22
1 /*
2 SuperCollider real time audio synthesis system
3 Copyright (c) 2002 James McCartney. All rights reserved.
4 http://www.audiosynth.com
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "SC_CoreAudio.h"
22 #include "SC_Sem.h"
23 #include "SC_ComPort.h"
24 #include <stdarg.h>
25 #include "SC_SequencedCommand.h"
26 #include "SC_Prototypes.h"
27 #include "SC_HiddenWorld.h"
28 #include "SC_Endian.h"
29 #include "SC_Lib_Cintf.h"
30 #include <stdlib.h>
31 #include <pthread.h>
32 #include <algorithm>
33
34 #ifdef _WIN32
35
36 #else
37 #include <sys/time.h>
38 #endif
39
40 #ifdef SC_IPHONE
41 #include "SC_VFP11.h"
42 #endif
43
44
45 #ifdef _WIN32
46 #include "SC_Win32Utils.h"
47 #endif
48
49 #ifndef SC_INNERSC
50 int64 gStartupOSCTime = -1;
51 #endif //ifndef SC_INNERSC
52
53 void sc_SetDenormalFlags();
54
55 void set_real_time_priority(pthread_t thread);
56
57 double gSampleRate, gSampleDur;
58
59 // =====================================================================
60 // Timing (CoreAudio)
61
62 #if SC_AUDIO_API == SC_AUDIO_API_COREAUDIO || SC_AUDIO_API == SC_AUDIO_API_AUDIOUNITS
63
64 int64 gOSCoffset = 0;
65
66 int32 server_timeseed()
67 {
68 static int32 count = 0;
69 int64 time = AudioGetCurrentHostTime();
70 return (int32)(time >> 32) ^ (int32)time ^ count--;
71 }
72
73 inline int64 CoreAudioHostTimeToOSC(int64 hostTime)
74 {
75 return (int64)((double)AudioConvertHostTimeToNanos(hostTime) * kNanosToOSCunits) + gOSCoffset;
76 }
77
78 int64 oscTimeNow()
79 {
80 return CoreAudioHostTimeToOSC(AudioGetCurrentHostTime());
81 }
82
83 void syncOSCOffsetWithTimeOfDay();
84 void syncOSCOffsetWithTimeOfDay()
85 {
86 // generate a value gOSCoffset such that
87 // (gOSCOffset + systemTimeInOSCunits)
88 // is equal to gettimeofday time in OSCunits.
89 // Then if this machine is synced via NTP, we are synced with the world.
90 // more accurate way to do this??
91
92 struct timeval tv;
93
94 int64 systemTimeBefore, systemTimeAfter, diff;
95 int64 minDiff = 0x7fffFFFFffffFFFFLL;
96
97 // take best of several tries
98 const int numberOfTries = 5;
99 int64 newOffset = gOSCoffset;
100 for (int i=0; i<numberOfTries; ++i) {
101 systemTimeBefore = AudioGetCurrentHostTime();
102 gettimeofday(&tv, 0);
103 systemTimeAfter = AudioGetCurrentHostTime();
104
105 diff = systemTimeAfter - systemTimeBefore;
106 if (diff < minDiff) {
107 minDiff = diff;
108 // assume that gettimeofday happens halfway between AudioGetCurrentHostTime calls
109 int64 systemTimeBetween = systemTimeBefore + diff/2;
110 int64 systemTimeInOSCunits = (int64)((double)AudioConvertHostTimeToNanos(systemTimeBetween) * kNanosToOSCunits);
111 int64 timeOfDayInOSCunits = ((int64)(tv.tv_sec + kSECONDS_FROM_1900_to_1970) << 32)
112 + (int64)(tv.tv_usec * kMicrosToOSCunits);
113 newOffset = timeOfDayInOSCunits - systemTimeInOSCunits;
114 }
115 }
116
117 gOSCoffset = newOffset;
118 //scprintf("gOSCoffset %016llX\n", gOSCoffset);
119 }
120
121 void* resyncThreadFunc(void* arg);
122 void* resyncThreadFunc(void* /*arg*/)
123 {
124 while (true) {
125 sleep(20);
126 syncOSCOffsetWithTimeOfDay();
127 }
128 return 0;
129 }
130
131 void initializeScheduler()
132 {
133 syncOSCOffsetWithTimeOfDay();
134
135 pthread_t resyncThread;
136 pthread_create (&resyncThread, NULL, resyncThreadFunc, (void*)0);
137 set_real_time_priority(resyncThread);
138 }
139 #endif // SC_AUDIO_API_COREAUDIO
140
141
142 // =====================================================================
143 // Timing (CoreAudioIPHONE)
144
145 #if SC_AUDIO_API == SC_AUDIO_API_COREAUDIOIPHONE
146
147 int64 gOSCoffset = 0;
148
149 static inline int64 GetMicroseconds()
150 {
151 struct timeval tv;
152 gettimeofday(&tv, 0);
153 return (int64) tv.tv_sec * 1000000 + tv.tv_usec;
154 }
155
156 static inline int64 GetCurrentOSCTime()
157 {
158 struct timeval tv;
159 uint64 s, f;
160 gettimeofday(&tv, 0);
161 s = (uint64)tv.tv_sec + (uint64)kSECONDS_FROM_1900_to_1970;
162 f = (uint64)((double)tv.tv_usec * kMicrosToOSCunits);
163
164 return (s << 32) + f;
165 }
166
167 int32 server_timeseed()
168 {
169 int64 time = GetCurrentOSCTime();
170 return Hash((int32)(time >> 32) + Hash((int32)time));
171 }
172
173 int64 oscTimeNow()
174 {
175 return GetCurrentOSCTime();
176 }
177
178 void initializeScheduler()
179 {
180 gOSCoffset = GetCurrentOSCTime();
181 }
182 #endif // SC_AUDIO_API_COREAUDIO
183
184
185
186
187 // =====================================================================
188 // Timing (PortAudio)
189
190 #if SC_AUDIO_API == SC_AUDIO_API_PORTAUDIO
191
192 int64 gOSCoffset = 0;
193
194 static inline int64 GetCurrentOSCTime()
195 {
196 struct timeval tv;
197 uint64 s, f;
198 gettimeofday(&tv, 0);
199 s = (uint64)tv.tv_sec + (uint64)kSECONDS_FROM_1900_to_1970;
200 f = (uint64)((double)tv.tv_usec * kMicrosToOSCunits);
201
202 return (s << 32) + f;
203 }
204
205 int32 server_timeseed()
206 {
207 int64 time = GetCurrentOSCTime();
208 return Hash((int32)(time >> 32) + Hash((int32)time));
209 }
210
211 int64 oscTimeNow()
212 {
213 return GetCurrentOSCTime();
214 }
215
216 int64 PaStreamTimeToOSC(PaTime pa_time) {
217 uint64 s, f;
218 s = (uint64)pa_time;
219 f = (uint64)((pa_time - s) * 1000000 * kMicrosToOSCunits);
220
221 return (s << 32) + f;
222 }
223
224 void initializeScheduler()
225 {
226 gOSCoffset = GetCurrentOSCTime();
227 }
228 #endif // SC_AUDIO_API_PORTAUDIO
229
230
231 // =====================================================================
232 // Packets (Common)
233
234 bool ProcessOSCPacket(World *inWorld, OSC_Packet *inPacket);
235 void PerformOSCBundle(World *inWorld, OSC_Packet *inPacket);
236 int PerformOSCMessage(World *inWorld, int inSize, char *inData, ReplyAddress *inReply);
237 PacketStatus PerformOSCPacket(World *world, OSC_Packet *packet, SC_ScheduledEvent::PacketFreeFunc);
238
239 void Perform_ToEngine_Msg(FifoMsg *inMsg);
240 void FreeOSCPacket(FifoMsg *inMsg);
241
242 struct IsBundle
243 {
244 IsBundle() { str4cpy(s, "#bundle"); }
245 bool checkIsBundle(int32 *in) { return in[0] == s[0] && in[1] == s[1]; }
246 int32 s[2];
247 };
248 IsBundle gIsBundle;
249
250 bool ProcessOSCPacket(World *inWorld, OSC_Packet *inPacket)
251 {
252 //scprintf("ProcessOSCPacket %d, '%s'\n", inPacket->mSize, inPacket->mData);
253 if (!inPacket) return false;
254 bool result;
255 inWorld->mDriverLock->Lock();
256 SC_AudioDriver *driver = AudioDriver(inWorld);
257 if (!driver) {
258 inWorld->mDriverLock->Unlock();
259 return false;
260 }
261 inPacket->mIsBundle = gIsBundle.checkIsBundle((int32*)inPacket->mData);
262 FifoMsg fifoMsg;
263 fifoMsg.Set(inWorld, Perform_ToEngine_Msg, FreeOSCPacket, (void*)inPacket);
264 result = driver->SendOscPacketMsgToEngine(fifoMsg);
265 inWorld->mDriverLock->Unlock();
266 return result;
267 }
268
269 int PerformOSCMessage(World *inWorld, int inSize, char *inData, ReplyAddress *inReply)
270 {
271 // scprintf("->PerformOSCMessage %d\n", inData[0]);
272 SC_LibCmd *cmdObj;
273 int cmdNameLen;
274 if (inData[0] == 0) {
275 cmdNameLen = 4;
276 uint32 index = inData[3];
277 if (index >= NUMBER_OF_COMMANDS) cmdObj = 0;
278 else cmdObj = gCmdArray[index];
279 } else {
280 cmdNameLen = OSCstrlen(inData);
281 cmdObj = gCmdLib->Get((int32*)inData);
282 }
283 if (!cmdObj) {
284 CallSendFailureCommand(inWorld, inData, "Command not found", inReply);
285 scprintf("FAILURE %s Command not found\n", inData);
286 return kSCErr_NoSuchCommand;
287 }
288
289 int err = cmdObj->Perform(inWorld, inSize - cmdNameLen, inData + cmdNameLen, inReply);
290 //scprintf("<-PerformOSCMessage %d\n", inData[0]);
291 return err;
292 }
293
294 void PerformOSCBundle(World *inWorld, OSC_Packet *inPacket)
295 {
296 //scprintf("->PerformOSCBundle %d\n", inPacket->mSize);
297 char *data = inPacket->mData + 16;
298 char* dataEnd = inPacket->mData + inPacket->mSize;
299
300 while (data < dataEnd) {
301 int32 msgSize = ntohl(*(int32*)data);
302 data += sizeof(int32);
303 //scprintf("msgSize %d\n", msgSize);
304 PerformOSCMessage(inWorld, msgSize, data, &inPacket->mReplyAddr);
305 data += msgSize;
306 }
307
308 // reset so next command uses permanent error notification status
309 inWorld->mLocalErrorNotification = 0;
310
311 // // 0 is a temporary change, so reset the local error flag
312 // if(!inWorld->mLocalErrorNotification) {
313 // inWorld->mLocalErrorNotification = inWorld->mErrorNotification;
314 // };
315
316 //scprintf("<-PerformOSCBundle %d\n", inPacket->mSize);
317 }
318
319 PacketStatus PerformOSCPacket(World *world, OSC_Packet *packet, SC_ScheduledEvent::PacketFreeFunc freeFunc)
320 {
321 SC_AudioDriver *driver = world->hw->mAudioDriver;
322
323 if (!packet->mIsBundle) {
324 PerformOSCMessage(world, packet->mSize, packet->mData, &packet->mReplyAddr);
325 world->mLocalErrorNotification = 0;
326 // if(!world->mLocalErrorNotification) {
327 // world->mLocalErrorNotification = world->mErrorNotification;
328 // };
329 return PacketPerformed;
330 } else {
331 // in real time engine, schedule the packet
332 int64 time = OSCtime(packet->mData + 8);
333 if (time == 0 || time == 1) {
334 PerformOSCBundle(world, packet);
335 return PacketPerformed;
336 } else {
337 if ((time < driver->mOSCbuftime) && (world->mVerbosity >= 0)) {
338 double seconds = (driver->mOSCbuftime - time)*kOSCtoSecs;
339 scprintf("late %.9f\n", seconds);
340 //FifoMsg outMsg;
341
342 //ReportLateness(packet->mReply, seconds)
343 }
344 // DEBUG
345 // else
346 //scprintf("scheduled in %.6f at time %.6f\n",
347 // (time-driver->mOSCbuftime)*kOSCtoSecs,
348 // (time-gStartupOSCTime)*kOSCtoSecs);
349
350 SC_ScheduledEvent event(world, time, packet, freeFunc);
351 driver->AddEvent(event);
352 return PacketScheduled;
353 }
354 }
355 }
356
357 ////////////////////////////////////////////////////////////////////////////
358
359 void Perform_ToEngine_Msg(FifoMsg *inMsg)
360 {
361 World *world = inMsg->mWorld;
362 OSC_Packet *packet = (OSC_Packet*)inMsg->mData;
363 if (!packet) return;
364
365 PacketStatus status = PerformOSCPacket(world, packet, SC_ScheduledEvent::FreeInNRT);
366 if (status == PacketScheduled) {
367 // Transfer ownership
368 inMsg->mData = 0;
369 inMsg->mFreeFunc = 0;
370 }
371 }
372
373 PacketStatus PerformCompletionMsg(World *inWorld, const OSC_Packet& inPacket)
374 {
375 OSC_Packet* packet = (OSC_Packet*)World_Alloc(inWorld, sizeof(OSC_Packet));
376 *packet = inPacket;
377 packet->mIsBundle = gIsBundle.checkIsBundle((int32*)packet->mData);
378 PacketStatus status = PerformOSCPacket(inWorld, packet, SC_ScheduledEvent::FreeInRT);
379 if (status == PacketPerformed) {
380 World_Free(inWorld, packet);
381 }
382 return status;
383 }
384
385 void FreeOSCPacket(FifoMsg *inMsg)
386 {
387 OSC_Packet *packet = (OSC_Packet*)inMsg->mData;
388 if (packet) {
389 inMsg->mData = 0;
390 #ifdef _WIN32
391 #pragma message("$$$todo fixme hack for the 'uninitialized packet->mData ptr when using MSVC 7.1 debug")
392 if (packet->mData != reinterpret_cast<char*>(0xcdcdcdcd))
393 free(packet->mData);
394 #else //#ifdef _WIN32
395 free(packet->mData);
396 #endif //#ifdef _WIN32
397 free(packet);
398 }
399 }
400
401 void Free_FromEngine_Msg(FifoMsg *inMsg);
402 void Free_FromEngine_Msg(FifoMsg *inMsg)
403 {
404 World_Free(inMsg->mWorld, inMsg->mData);
405 }
406
407 // =====================================================================
408 // Audio driver (Common)
409
410 SC_AudioDriver::SC_AudioDriver(struct World *inWorld)
411 : mWorld(inWorld)
412 , mSampleTime(0)
413 , mNumSamplesPerCallback(0)
414
415 {
416 }
417
418 SC_AudioDriver::~SC_AudioDriver()
419 {
420 mRunThreadFlag = false;
421 mAudioSync.Signal();
422 pthread_join(mThread, 0);
423 }
424
425 void* audio_driver_thread_func(void* arg);
426 void* audio_driver_thread_func(void* arg)
427 {
428 SC_AudioDriver *ca = (SC_AudioDriver*)arg;
429 void* result = ca->RunThread();
430 return result;
431 }
432
433 void* SC_AudioDriver::RunThread()
434 {
435 TriggersFifo *trigfifo = &mWorld->hw->mTriggers;
436 NodeReplyFifo *nodereplyfifo = &mWorld->hw->mNodeMsgs;
437 NodeEndsFifo *nodeendfifo = &mWorld->hw->mNodeEnds;
438 DeleteGraphDefsFifo *deletegraphfifo = &mWorld->hw->mDeleteGraphDefs;
439
440 while (mRunThreadFlag) {
441 // wait for sync
442 mAudioSync.WaitNext();
443
444 mWorld->mNRTLock->Lock();
445
446 // send /tr messages
447 trigfifo->Perform();
448
449 // send node reply messages
450 nodereplyfifo->Perform();
451
452 // send node status messages
453 nodeendfifo->Perform();
454
455 // free GraphDefs
456 deletegraphfifo->Perform();
457
458 // perform messages
459 mFromEngine.Perform();
460
461 mWorld->mNRTLock->Unlock();
462 }
463 return 0;
464 }
465
466 bool SC_AudioDriver::SendMsgFromEngine(FifoMsg& inMsg)
467 {
468 return mFromEngine.Write(inMsg);
469 }
470
471
472 bool SC_AudioDriver::SendMsgToEngine(FifoMsg& inMsg)
473 {
474 mToEngine.Free();
475 return mToEngine.Write(inMsg);
476 }
477
478 bool SC_AudioDriver::SendOscPacketMsgToEngine(FifoMsg& inMsg)
479 {
480 mOscPacketsToEngine.Free();
481 return mOscPacketsToEngine.Write(inMsg);
482 }
483
484 void SC_ScheduledEvent::FreeInRT(struct World* world, OSC_Packet* packet)
485 {
486 World_Free(world, packet->mData);
487 World_Free(world, packet);
488 }
489
490 void SC_ScheduledEvent::FreeInNRT(struct World* world, OSC_Packet* packet)
491 {
492 FifoMsg msg;
493 msg.Set(world, FreeOSCPacket, 0, (void*)packet);
494 world->hw->mAudioDriver->SendMsgFromEngine(msg);
495 }
496
497 void SC_ScheduledEvent::Perform()
498 {
499 PerformOSCBundle(mWorld, mPacket);
500 (*mPacketFreeFunc)(mWorld, mPacket);
501 }
502
503 bool SC_AudioDriver::Setup()
504 {
505 mRunThreadFlag = true;
506 pthread_create (&mThread, NULL, audio_driver_thread_func, (void*)this);
507 set_real_time_priority(mThread);
508
509 int numSamples;
510 double sampleRate;
511
512 if (!DriverSetup(&numSamples, &sampleRate)) return false;
513
514 mNumSamplesPerCallback = numSamples;
515 //scprintf("mNumSamplesPerCallback %d\n", mNumSamplesPerCallback);
516 //scprintf("mHardwareBufferSize %lu\n", mHardwareBufferSize);
517
518 // compute a per sample increment to the OpenSoundControl Time
519 mOSCincrementNumerator = (double)mWorld->mBufLength * pow(2.,32.);
520 mOSCincrement = (int64)(mOSCincrementNumerator / sampleRate);
521 mOSCtoSamples = sampleRate / pow(2.,32.);
522
523 World_SetSampleRate(mWorld, sampleRate);
524 mSampleRate = mSmoothSampleRate = sampleRate;
525 mBuffersPerSecond = sampleRate / mNumSamplesPerCallback;
526 mMaxPeakCounter = (int)mBuffersPerSecond;
527
528 if(mWorld->mVerbosity >= 0){
529 scprintf("SC_AudioDriver: sample rate = %f, driver's block size = %d\n", sampleRate, mNumSamplesPerCallback);
530 }
531
532 return true;
533 }
534
535 bool SC_AudioDriver::Start()
536 {
537 mAvgCPU = 0.;
538 mPeakCPU = 0.;
539 mPeakCounter = 0;
540
541 mStartHostSecs = 0.;
542 mPrevHostSecs = 0.;
543 mStartSampleTime = 0.;
544 mPrevSampleTime = 0.;
545
546 World_Start(mWorld);
547 #ifndef SC_INNERSC
548 gStartupOSCTime = oscTimeNow();
549 #endif //SC_INNERSC
550
551 return DriverStart();
552 }
553
554 bool SC_AudioDriver::Stop()
555 {
556 if (!DriverStop()) return false;
557 return true;
558 }
559
560
561 // =====================================================================
562 // Audio driver (CoreAudio)
563 #if SC_AUDIO_API == SC_AUDIO_API_COREAUDIO
564
565 SC_AudioDriver* SC_NewAudioDriver(struct World *inWorld)
566 {
567 return new SC_CoreAudioDriver(inWorld);
568 }
569
570 #endif
571
572 #if SC_AUDIO_API == SC_AUDIO_API_COREAUDIO || SC_AUDIO_API == SC_AUDIO_API_AUDIOUNITS
573
574 SC_CoreAudioDriver::SC_CoreAudioDriver(struct World *inWorld)
575 : SC_AudioDriver(inWorld)
576 , mInputBufList(0)
577 {
578 }
579
580 SC_CoreAudioDriver::~SC_CoreAudioDriver()
581 {
582 if (mInputBufList)
583 {
584 int i;
585 for (i=0; i<mInputBufList->mNumberBuffers; i++)
586 {
587 free(mInputBufList->mBuffers[i].mData);
588 }
589 free(mInputBufList);
590 }
591 }
592
593 bool SC_CoreAudioDriver::DriverSetup(int* outNumSamplesPerCallback, double* outSampleRate)
594 {
595 OSStatus err = kAudioHardwareNoError;
596 UInt32 count;
597 mOutputDevice = kAudioDeviceUnknown;
598 mInputDevice = kAudioDeviceUnknown;
599
600 //scprintf("SC_CoreAudioDriver::Setup world %p\n", mWorld);
601
602 ////////////////////////////////////////////////////////////////////////////////////////////////
603
604 do {
605 err = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &count, 0);
606
607 AudioDeviceID *devices = (AudioDeviceID*)malloc(count);
608 err = AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &count, devices);
609 if (err != kAudioHardwareNoError) {
610 scprintf("get kAudioHardwarePropertyDevices error %4.4s\n", (char*)&err);
611 free(devices);
612 break;
613 }
614
615 int numdevices = count / sizeof(AudioDeviceID);
616 if(mWorld->mVerbosity >= 0){
617 scprintf("Number of Devices: %d\n", numdevices);
618 }
619 for (int i = 0; i < numdevices; ++i) {
620 err = AudioDeviceGetPropertyInfo(devices[i], 0, false, kAudioDevicePropertyDeviceName, &count, 0);
621 if (err != kAudioHardwareNoError) {
622 scprintf("info kAudioDevicePropertyDeviceName error %4.4s A %d %p\n", (char*)&err, i, devices[i]);
623 break;
624 }
625
626 char *name = (char*)malloc(count);
627 err = AudioDeviceGetProperty(devices[i], 0, false, kAudioDevicePropertyDeviceName, &count, name);
628 if (err != kAudioHardwareNoError) {
629 scprintf("get kAudioDevicePropertyDeviceName error %4.4s A %d %p\n", (char*)&err, i, devices[i]);
630 free(name);
631 break;
632 }
633 if(mWorld->mVerbosity >= 0){
634 scprintf(" %d : \"%s\"\n", i, name);
635 }
636 free(name);
637 }
638 free(devices);
639 if(mWorld->mVerbosity >= 0){
640 scprintf("\n");
641 }
642 } while (false);
643
644 if (mWorld->hw->mInDeviceName || mWorld->hw->mOutDeviceName) {
645 err = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &count, 0);
646 if (err != kAudioHardwareNoError) {
647 scprintf("info kAudioHardwarePropertyDevices error %4.4s\n", (char*)&err);
648 return false;
649 }
650
651 AudioDeviceID *devices = (AudioDeviceID*)malloc(count);
652 err = AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &count, devices);
653 if (err != kAudioHardwareNoError) {
654 scprintf("get kAudioHardwarePropertyDevices error %4.4s\n", (char*)&err);
655 return false;
656 }
657
658 int numdevices = count / sizeof(AudioDeviceID);
659 for (int i = 0; i < numdevices; ++i) {
660 err = AudioDeviceGetPropertyInfo(devices[i], 0, false, kAudioDevicePropertyDeviceName, &count, 0);
661 if (err != kAudioHardwareNoError) {
662 scprintf("info kAudioDevicePropertyDeviceName error %4.4s B %d %p\n", (char*)&err, i, devices[i]);
663 break;
664 }
665
666 char *name = (char*)malloc(count);
667 err = AudioDeviceGetProperty(devices[i], 0, false, kAudioDevicePropertyDeviceName, &count, name);
668 if (err != kAudioHardwareNoError) {
669 scprintf("get kAudioDevicePropertyDeviceName error %4.4s B %d %p\n", (char*)&err, i, devices[i]);
670 return false;
671 }
672 if (strcmp(name, mWorld->hw->mInDeviceName) == 0) {
673 mInputDevice = devices[i];
674 }
675 if (strcmp(name, mWorld->hw->mOutDeviceName) == 0) {
676 mOutputDevice = devices[i];
677 }
678 free(name);
679 if (mInputDevice!=kAudioDeviceUnknown && mOutputDevice!=kAudioDeviceUnknown) break;
680 }
681 free(devices);
682 if (mOutputDevice==kAudioDeviceUnknown || mInputDevice==kAudioDeviceUnknown) goto getDefault;
683 } else {
684 getDefault:
685
686 // get the default output device for the HAL
687 if (mOutputDevice==kAudioDeviceUnknown)
688 {
689 count = sizeof(mOutputDevice);
690 //get the output device:
691 err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &count, (void *) & mOutputDevice);
692 if (err != kAudioHardwareNoError) {
693 scprintf("get kAudioHardwarePropertyDefaultOutputDevice error %4.4s\n", (char*)&err);
694 return false;
695 }
696 }
697
698 //get the input device
699 if (mInputDevice==kAudioDeviceUnknown)
700 {
701 count = sizeof(mInputDevice);
702 err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice, &count, (void *) & mInputDevice);
703 //get the input device:
704 if (err != kAudioHardwareNoError) {
705 scprintf("get kAudioHardwarePropertyDefaultInputDevice error %4.4s\n", (char*)&err);
706 return false;
707 }
708 }
709 }
710
711 ////////////////////////////////////////////////////////////////////////////////////////////////
712
713 AudioTimeStamp now;
714 now.mFlags = kAudioTimeStampHostTimeValid;
715 now.mHostTime = AudioGetCurrentHostTime();
716
717 if (mPreferredHardwareBufferFrameSize)
718 {
719
720 count = sizeof(UInt32);
721 err = AudioDeviceSetProperty(mOutputDevice, &now, 0, false, kAudioDevicePropertyBufferFrameSize, count, &mPreferredHardwareBufferFrameSize);
722 if (err != kAudioHardwareNoError) {
723 scprintf("set kAudioDevicePropertyBufferFrameSize error %4.4s\n", (char*)&err);
724 //return false;
725 }
726 if (UseSeparateIO())
727 {
728 count = sizeof(UInt32);
729 err = AudioDeviceSetProperty(mOutputDevice, &now, 0, false, kAudioDevicePropertyBufferFrameSize, count, &mPreferredHardwareBufferFrameSize);
730 if (err != kAudioHardwareNoError) {
731 scprintf("set kAudioDevicePropertyNominalSampleRate error %4.4s\n", (char*)&err);
732 //return false;
733 }
734 }
735 }
736
737 if (mPreferredSampleRate)
738 {
739 Float64 sampleRate = mPreferredSampleRate;
740 count = sizeof(Float64);
741 err = AudioDeviceSetProperty(mOutputDevice, &now, 0, false, kAudioDevicePropertyNominalSampleRate, count, &sampleRate);
742 if (err != kAudioHardwareNoError) {
743 scprintf("set kAudioDevicePropertyNominalSampleRate error %4.4s\n", (char*)&err);
744 //return false;
745 }
746 if (UseSeparateIO())
747 {
748 count = sizeof(Float64);
749 err = AudioDeviceSetProperty(mInputDevice, &now, 0, false, kAudioDevicePropertyNominalSampleRate, count, &sampleRate);
750 if (err != kAudioHardwareNoError) {
751 scprintf("set kAudioDevicePropertyNominalSampleRate error %4.4s\n", (char*)&err);
752 //return false;
753 }
754 }
755 }
756
757 // get the buffersize for the out device
758 count = sizeof(mHardwareBufferSize);
759 err = AudioDeviceGetProperty(mOutputDevice, 0, false, kAudioDevicePropertyBufferSize, &count, &mHardwareBufferSize);
760 if (err != kAudioHardwareNoError) {
761 scprintf("get kAudioDevicePropertyBufferSize error %4.4s\n", (char*)&err);
762 return false;
763 }
764 //scprintf("mHardwareBufferSize = %ld\n", mHardwareBufferSize);
765
766 // get a description of the data format used by the output device
767 count = sizeof(AudioStreamBasicDescription);
768 err = AudioDeviceGetProperty(mOutputDevice, 0, false, kAudioDevicePropertyStreamFormat, &count, &outputStreamDesc);
769 if (err != kAudioHardwareNoError) {
770 scprintf("get kAudioDevicePropertyStreamFormat error %4.4s\n", (char*)&err);
771 return false;
772 }
773
774 if (mInputDevice != kAudioDeviceUnknown) {
775 // get a description of the data format used by the input device
776 count = sizeof(AudioStreamBasicDescription);
777 err = AudioDeviceGetProperty(mInputDevice, 0, true, kAudioDevicePropertyStreamFormat, &count, &inputStreamDesc);
778 if (err != kAudioHardwareNoError) {
779 scprintf("get kAudioDevicePropertyStreamFormat error %4.4s\n", (char*)&err);
780 return false;
781 }
782
783 if (inputStreamDesc.mSampleRate != outputStreamDesc.mSampleRate) {
784 scprintf("input and output sample rates do not match. %g != %g\n", inputStreamDesc.mSampleRate, outputStreamDesc.mSampleRate);
785 return false;
786 }
787 }
788
789 ////////////////////////////////////////////////////////////////////////////////////////////////
790
791 do {
792 err = AudioDeviceGetPropertyInfo(mInputDevice, 0, false, kAudioDevicePropertyDeviceName, &count, 0);
793 if (err != kAudioHardwareNoError) {
794 scprintf("info kAudioDevicePropertyDeviceName error %4.4s C %p\n", (char*)&err, mInputDevice);
795 break;
796 }
797
798 char *name = (char*)malloc(count);
799 err = AudioDeviceGetProperty(mInputDevice, 0, false, kAudioDevicePropertyDeviceName, &count, name);
800 if (err != kAudioHardwareNoError) {
801 scprintf("get kAudioDevicePropertyDeviceName error %4.4s C %p\n", (char*)&err, mInputDevice);
802 free(name);
803 break;
804 }
805
806 if(mWorld->mVerbosity >= 0){
807 scprintf("\"%s\" Input Device\n", name);
808 }
809 free(name);
810
811 Boolean writeable;
812 err = AudioDeviceGetPropertyInfo(mInputDevice, 0, 1, kAudioDevicePropertyStreamConfiguration,
813 &count, &writeable);
814 if (err != kAudioHardwareNoError) {
815 scprintf("info kAudioDevicePropertyStreamConfiguration error %4.4s\n", (char*)&err);
816 break;
817 }
818
819 AudioBufferList *bufList = (AudioBufferList*)malloc(count);
820 err = AudioDeviceGetProperty(mInputDevice, 0, 1, kAudioDevicePropertyStreamConfiguration,
821 &count, bufList);
822 if (err != kAudioHardwareNoError) {
823 scprintf("get kAudioDevicePropertyStreamConfiguration error %4.4s\n", (char*)&err);
824 free(bufList);
825 break;
826 }
827
828 if(mWorld->mVerbosity >= 0){
829 scprintf(" Streams: %d\n", bufList->mNumberBuffers);
830 for (unsigned int j = 0; j < bufList->mNumberBuffers; ++j) {
831 scprintf(" %d channels %d\n", j, bufList->mBuffers[j].mNumberChannels);
832 }
833 }
834
835 free(bufList);
836 } while (false);
837 if(mWorld->mVerbosity >= 0){
838 scprintf("\n");
839 }
840
841 ////////////////////////////////////////////////////////////////////////////////////////////////
842
843 do {
844 err = AudioDeviceGetPropertyInfo(mOutputDevice, 0, false, kAudioDevicePropertyDeviceName, &count, 0);
845
846 char *name = (char*)malloc(count);
847 err = AudioDeviceGetProperty(mOutputDevice, 0, false, kAudioDevicePropertyDeviceName, &count, name);
848 if (err != kAudioHardwareNoError) {
849 scprintf("get kAudioDevicePropertyDeviceName error %4.4s\n", (char*)&err);
850 free(name);
851 break;
852 }
853
854 if(mWorld->mVerbosity >= 0){
855 scprintf("\"%s\" Output Device\n", name);
856 }
857 free(name);
858
859 Boolean writeable;
860 err = AudioDeviceGetPropertyInfo(mOutputDevice, 0, 0, kAudioDevicePropertyStreamConfiguration,
861 &count, &writeable);
862 if (err != kAudioHardwareNoError) {
863 scprintf("info kAudioDevicePropertyStreamConfiguration error %4.4s\n", (char*)&err);
864 break;
865 }
866
867 AudioBufferList *bufList = (AudioBufferList*)malloc(count);
868 err = AudioDeviceGetProperty(mOutputDevice, 0, 0, kAudioDevicePropertyStreamConfiguration,
869 &count, bufList);
870 if (err != kAudioHardwareNoError) {
871 scprintf("get kAudioDevicePropertyStreamConfiguration error %4.4s\n", (char*)&err);
872 free(bufList);
873 break;
874 }
875
876 if(mWorld->mVerbosity >= 0){
877 scprintf(" Streams: %d\n", bufList->mNumberBuffers);
878 for (unsigned int j = 0; j < bufList->mNumberBuffers; ++j) {
879 scprintf(" %d channels %d\n", j, bufList->mBuffers[j].mNumberChannels);
880 }
881 }
882 free(bufList);
883 } while (false);
884 if(mWorld->mVerbosity >= 0){
885 scprintf("\n");
886 }
887
888 ////////////////////////////////////////////////////////////////////////////////////////////////
889
890
891 if (UseSeparateIO()) {
892 count = sizeof(UInt32);
893 err = AudioDeviceGetProperty(mInputDevice, 0, true, kAudioDevicePropertySafetyOffset, &count, &mSafetyOffset);
894 if (err != kAudioHardwareNoError) {
895 scprintf("get kAudioDevicePropertySafetyOffset error %4.4s\n", (char*)&err);
896 return false;
897 }
898 if(mWorld->mVerbosity >= 1){
899 scprintf("mSafetyOffset %lu\n", mSafetyOffset);
900 }
901
902 Boolean writeable;
903 err = AudioDeviceGetPropertyInfo(mInputDevice, 0, true, kAudioDevicePropertyStreamConfiguration, &count, &writeable);
904 mInputBufList = (AudioBufferList*)malloc(count);
905 err = AudioDeviceGetProperty(mInputDevice, 0, true, kAudioDevicePropertyStreamConfiguration, &count, mInputBufList);
906 if (err != kAudioHardwareNoError) {
907 scprintf("get kAudioDevicePropertyStreamConfiguration error %4.4s\n", (char*)&err);
908 return false;
909 }
910
911 if(mWorld->mVerbosity >= 1){
912 scprintf("mNumberBuffers %lu\n", mInputBufList->mNumberBuffers);
913 }
914 for (uint32 i=0; i<mInputBufList->mNumberBuffers; ++i) {
915 if(mWorld->mVerbosity >= 1){
916 scprintf(" mDataByteSize %d %lu\n", i, mInputBufList->mBuffers[i].mDataByteSize);
917 }
918 mInputBufList->mBuffers[i].mData = zalloc(1, mInputBufList->mBuffers[i].mDataByteSize);
919 }
920
921 /*
922 AudioTimeStamp now;
923 now.mFlags = kAudioTimeStampHostTimeValid;
924 now.mHostTime = AudioGetCurrentHostTime();
925
926
927 err = AudioDeviceSetProperty(mInputDevice, &now, 0, true, kAudioDevicePropertyRegisterBufferList, count, mInputBufList);
928 if (err != kAudioHardwareNoError) {
929 scprintf("get kAudioDevicePropertyRegisterBufferList error %4.4s\n", (char*)&err);
930 return false;
931 }
932 */
933 }
934
935 *outNumSamplesPerCallback = mHardwareBufferSize / outputStreamDesc.mBytesPerFrame;
936 *outSampleRate = outputStreamDesc.mSampleRate;
937
938 if(mWorld->mVerbosity >= 1){
939 scprintf("<-SC_CoreAudioDriver::Setup world %p\n", mWorld);
940 }
941
942
943
944 //check if using built-in output, and thus whether there could be headphone plug/un-plug issues
945 //our assumption otherwise is that we don't respond, and SC will stay with the pre-arranged or default device, and not restart just because headphones switched
946
947 err = AudioDeviceGetPropertyInfo(mOutputDevice, 0, false, kAudioDevicePropertyDeviceName, &count, 0);
948 if (err != kAudioHardwareNoError) {
949 scprintf("info kAudioDevicePropertyDeviceName error %4.4s %p\n", (char*)&err, mOutputDevice);
950 return false;
951 }
952
953 char *outputname = (char*)malloc(count);
954 const char *testname = "Built-in Output";
955 err = AudioDeviceGetProperty(mOutputDevice, 0, false, kAudioDevicePropertyDeviceName, &count, outputname);
956 if (err != kAudioHardwareNoError) {
957 scprintf("get kAudioDevicePropertyDeviceName error %4.4s %p\n", (char*)&err, mOutputDevice);
958 return false;
959 }
960 builtinoutputflag_ = 0;
961
962 if (strcmp(testname, outputname) == 0) {
963 builtinoutputflag_ = 1;
964 }
965 // else {
966 //
967 // //check for an Aggregate Devices with a subdevice which is Built-in Output
968 // //http://lists.apple.com/archives/coreaudio-api/2009/Oct/msg00182.html
969 //
970 //
971 // }
972
973 free(outputname);
974
975
976 return true;
977 }
978
979 /*
980 OSStatus appIOProc2 (AudioDeviceID inDevice, const AudioTimeStamp* inNow,
981 const AudioBufferList* inInputData,
982 const AudioTimeStamp* inInputTime,
983 AudioBufferList* outOutputData,
984 const AudioTimeStamp* inOutputTime,
985 void* defptr);
986 OSStatus appIOProc2 (AudioDeviceID inDevice, const AudioTimeStamp* inNow,
987 const AudioBufferList* inInputData,
988 const AudioTimeStamp* inInputTime,
989 AudioBufferList* outOutputData,
990 const AudioTimeStamp* inOutputTime,
991 void* defptr)
992 {
993 SC_CoreAudioDriver* def = (SC_CoreAudioDriver*)defptr;
994
995 int64 oscTime = CoreAudioHostTimeToOSC(inOutputTime->mHostTime);
996
997 AudioTimeStamp readTime;
998 readTime.mSampleTime = inNow->mSampleTime - def->SafetyOffset() - def->NumSamplesPerCallback();
999 readTime.mFlags = kAudioTimeStampSampleTimeValid;
1000
1001 AudioDeviceRead(def->InputDevice(), &readTime, def->GetInputBufferList());
1002
1003 def->Run(def->GetInputBufferList(), outOutputData, oscTime);
1004
1005 return kAudioHardwareNoError;
1006 }
1007 */
1008
1009
1010 OSStatus appIOProcSeparateIn (AudioDeviceID device, const AudioTimeStamp* inNow,
1011 const AudioBufferList* inInputData,
1012 const AudioTimeStamp* inInputTime,
1013 AudioBufferList* outOutputData,
1014 const AudioTimeStamp* inOutputTime,
1015 void* defptr)
1016 {
1017 SC_CoreAudioDriver* def = (SC_CoreAudioDriver*)defptr;
1018
1019 // copy input data to driver's private buffer list
1020 int i;
1021 for (i=0; i<inInputData->mNumberBuffers; i++)
1022 {
1023 memcpy(def->mInputBufList->mBuffers[i].mData, inInputData->mBuffers[i].mData, inInputData->mBuffers[i].mDataByteSize);
1024 }
1025
1026 return kAudioHardwareNoError;
1027 }
1028
1029 OSStatus appIOProc (AudioDeviceID device, const AudioTimeStamp* inNow,
1030 const AudioBufferList* inInputData,
1031 const AudioTimeStamp* inInputTime,
1032 AudioBufferList* outOutputData,
1033 const AudioTimeStamp* inOutputTime,
1034 void* defptr)
1035 {
1036 SC_CoreAudioDriver* def = (SC_CoreAudioDriver*)defptr;
1037 int64 oscTime = CoreAudioHostTimeToOSC(inOutputTime->mHostTime);
1038
1039 double hostSecs = (double)AudioConvertHostTimeToNanos(inOutputTime->mHostTime) * 1e-9;
1040 double sampleTime = inOutputTime->mSampleTime;
1041 if (def->mStartHostSecs == 0) {
1042 def->mStartHostSecs = hostSecs;
1043 def->mStartSampleTime = sampleTime;
1044 } else {
1045 double instSampleRate = (sampleTime - def->mPrevSampleTime)/(hostSecs - def->mPrevHostSecs);
1046 double smoothSampleRate = def->mSmoothSampleRate;
1047 smoothSampleRate = smoothSampleRate + 0.002 * (instSampleRate - smoothSampleRate);
1048 def->mOSCincrement = (int64)(def->mOSCincrementNumerator / smoothSampleRate);
1049 def->mSmoothSampleRate = smoothSampleRate;
1050
1051 #if 0
1052 double avgSampleRate = (sampleTime - def->mStartSampleTime)/(hostSecs - def->mStartHostSecs);
1053 double jitter = (smoothSampleRate * (hostSecs - def->mPrevHostSecs)) - (sampleTime - def->mPrevSampleTime);
1054 double drift = (smoothSampleRate - def->mSampleRate) * (hostSecs - def->mStartHostSecs);
1055 //if (fabs(jitter) > 0.01) {
1056 scprintf("avgSR %.6f smoothSR %.6f instSR %.6f jitter %.6f drift %.6f inc %lld\n",
1057 avgSampleRate, smoothSampleRate, instSampleRate, jitter, drift, def->mOSCincrement);
1058 //}
1059 #endif
1060 }
1061 def->mPrevHostSecs = hostSecs;
1062 def->mPrevSampleTime = sampleTime;
1063
1064 if (!def->UseSeparateIO())
1065 {
1066 def->Run(inInputData, outOutputData, oscTime);
1067 return kAudioHardwareNoError;
1068 }
1069
1070
1071 def->Run(def->mInputBufList, outOutputData, oscTime);
1072 return kAudioHardwareNoError;
1073 }
1074
1075 void SC_CoreAudioDriver::Run(const AudioBufferList* inInputData,
1076 AudioBufferList* outOutputData, int64 oscTime)
1077 {
1078 int64 systemTimeBefore = AudioGetCurrentHostTime();
1079 World *world = mWorld;
1080
1081 try {
1082 int numSamplesPerCallback = NumSamplesPerCallback();
1083 mOSCbuftime = oscTime;
1084
1085 #ifdef __APPLE__
1086 sc_SetDenormalFlags();
1087 #endif
1088
1089 mFromEngine.Free();
1090 /*if (mToEngine.HasData()) {
1091 scprintf("oscTime %.9f %.9f\n", oscTime*kOSCtoSecs, CoreAudioHostTimeToOSC(AudioGetCurrentHostTime())*kOSCtoSecs);
1092 }*/
1093 mToEngine.Perform();
1094 mOscPacketsToEngine.Perform();
1095
1096 int bufFrames = world->mBufLength;
1097 int numBufs = numSamplesPerCallback / bufFrames;
1098
1099 int numInputBuses = world->mNumInputs;
1100 int numOutputBuses = world->mNumOutputs;
1101 float* inputBuses = world->mAudioBus + world->mNumOutputs * bufFrames;
1102 float* outputBuses = world->mAudioBus;
1103 int32* inputTouched = world->mAudioBusTouched + world->mNumOutputs;
1104 int32* outputTouched = world->mAudioBusTouched;
1105 int numInputStreams = inInputData ? inInputData->mNumberBuffers : 0;
1106 int numOutputStreams = outOutputData ? outOutputData->mNumberBuffers : 0;
1107
1108 //static int go = 0;
1109
1110 int64 oscInc = mOSCincrement;
1111 double oscToSamples = mOSCtoSamples;
1112
1113 int bufFramePos = 0;
1114
1115 for (int i = 0; i < numBufs; ++i, world->mBufCounter++, bufFramePos += bufFrames) {
1116 int32 bufCounter = world->mBufCounter;
1117
1118 // de-interleave input
1119 if (inInputData) {
1120 const AudioBuffer* inInputDataBuffers = inInputData->mBuffers;
1121 for (int s = 0, b = 0; b<numInputBuses && s < numInputStreams; s++) {
1122 const AudioBuffer* buf = inInputDataBuffers + s;
1123 int nchan = buf->mNumberChannels;
1124 if (buf->mData) {
1125 float *busdata = inputBuses + b * bufFrames;
1126 float *bufdata = (float*)buf->mData + bufFramePos * nchan;
1127 if (nchan == 1) {
1128 for (int k=0; k<bufFrames; ++k) {
1129 busdata[k] = bufdata[k];
1130 }
1131 inputTouched[b] = bufCounter;
1132 } else {
1133 int minchan = sc_min(nchan, numInputBuses - b);
1134 for (int j=0; j<minchan; ++j, busdata += bufFrames) {
1135 for (int k=0, m=j; k<bufFrames; ++k, m += nchan) {
1136 busdata[k] = bufdata[m];
1137 }
1138 inputTouched[b+j] = bufCounter;
1139 }
1140 }
1141 b += nchan;
1142 }
1143 }
1144 }
1145 //count++;
1146
1147 int64 schedTime;
1148 int64 nextTime = oscTime + oscInc;
1149
1150 /*if (mScheduler.Ready(nextTime)) {
1151 double diff = (mScheduler.NextTime() - mOSCbuftime)*kOSCtoSecs;
1152 scprintf("rdy %.9f %.9f %.9f\n", (mScheduler.NextTime()-gStartupOSCTime) * kOSCtoSecs, (mOSCbuftime-gStartupOSCTime)*kOSCtoSecs, diff);
1153 }*/
1154
1155 while ((schedTime = mScheduler.NextTime()) <= nextTime) {
1156 float diffTime = (float)(schedTime - oscTime) * oscToSamples + 0.5;
1157 float diffTimeFloor = floor(diffTime);
1158 world->mSampleOffset = (int)diffTimeFloor;
1159 world->mSubsampleOffset = diffTime - diffTimeFloor;
1160
1161 if (world->mSampleOffset < 0) world->mSampleOffset = 0;
1162 else if (world->mSampleOffset >= world->mBufLength) world->mSampleOffset = world->mBufLength-1;
1163
1164 SC_ScheduledEvent event = mScheduler.Remove();
1165 event.Perform();
1166 }
1167 world->mSampleOffset = 0;
1168 world->mSubsampleOffset = 0.f;
1169
1170 World_Run(world);
1171
1172 // interleave output
1173 AudioBuffer* outOutputDataBuffers = outOutputData->mBuffers;
1174 for (int s = 0, b = 0; b<numOutputBuses && s < numOutputStreams; s++) {
1175 AudioBuffer* buf = outOutputDataBuffers + s;
1176 int nchan = buf->mNumberChannels;
1177 if (buf->mData) {
1178 float *busdata = outputBuses + b * bufFrames;
1179 float *bufdata = (float*)buf->mData + bufFramePos * nchan;
1180 if (nchan == 1) {
1181 if (outputTouched[b] == bufCounter) {
1182 for (int k=0; k<bufFrames; ++k) {
1183 bufdata[k] = busdata[k];
1184 }
1185 }
1186 } else {
1187 int minchan = sc_min(nchan, numOutputBuses - b);
1188 for (int j=0; j<minchan; ++j, busdata += bufFrames) {
1189 if (outputTouched[b+j] == bufCounter) {
1190 for (int k=0, m=j; k<bufFrames; ++k, m += nchan) {
1191 bufdata[m] = busdata[k];
1192 }
1193 }
1194 }
1195 }
1196 b += nchan;
1197 }
1198 }
1199 oscTime = mOSCbuftime = nextTime;
1200 }
1201 } catch (std::exception& exc) {
1202 scprintf("exception in real time: %s\n", exc.what());
1203 } catch (...) {
1204 scprintf("unknown exception in real time\n");
1205 }
1206 int64 systemTimeAfter = AudioGetCurrentHostTime();
1207 double calcTime = (double)AudioConvertHostTimeToNanos(systemTimeAfter - systemTimeBefore) * 1e-9;
1208 double cpuUsage = calcTime * mBuffersPerSecond * 100.;
1209 mAvgCPU = mAvgCPU + 0.1 * (cpuUsage - mAvgCPU);
1210 if (cpuUsage > mPeakCPU || --mPeakCounter <= 0)
1211 {
1212 mPeakCPU = cpuUsage;
1213 mPeakCounter = mMaxPeakCounter;
1214 }
1215
1216 mAudioSync.Signal();
1217 }
1218
1219
1220
1221
1222 //////////////////////////////////////////////////////////////////////////////////////////
1223 //////////////////////////////////////////////////////////////////////////////////////////
1224 //////////////////////////////////////////////////////////////////////////////////////////
1225 // These are not linked in yet, but we'll need to listen for the properties and stop/restart synthesis
1226 // if sample-rate, format, or device change.
1227
1228 OSStatus hardwareListenerProc ( AudioHardwarePropertyID inPropertyID,
1229 void* inClientData)
1230 {
1231 OSStatus err = noErr;
1232 char cStr[255];
1233 UInt32 outSize;
1234 Boolean outWritable;
1235 AudioDeviceID deviceID;
1236
1237 switch(inPropertyID)
1238 {
1239 case kAudioHardwarePropertyDefaultOutputDevice:
1240 scprintf("%s\n", "***** HARDWARE NOTIFICATION - kAudioHardwarePropertyDefaultOutputDevice\r");
1241 err = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDefaultOutputDevice, &outSize, &outWritable);
1242 if (err) break;
1243 err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &outSize, &deviceID);
1244 if (err) break;
1245 err = AudioDeviceGetPropertyInfo(deviceID, 0, false, kAudioDevicePropertyDeviceName, &outSize, &outWritable);
1246 if (err) break;
1247 err = AudioDeviceGetProperty(deviceID, 0, false, kAudioDevicePropertyDeviceName, &outSize, cStr);
1248 if (err) break;
1249
1250 // do something
1251
1252 break;
1253
1254 case kAudioHardwarePropertyDefaultInputDevice:
1255 scprintf("%s\n", "***** HARDWARE NOTIFICATION - kAudioHardwarePropertyDefaultInputDevice\r");
1256 err = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDefaultInputDevice, &outSize, &outWritable);
1257 if (err) break;
1258 err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice, &outSize, &deviceID);
1259 if (err) break;
1260 err = AudioDeviceGetPropertyInfo(deviceID, 0, false, kAudioDevicePropertyDeviceName, &outSize, &outWritable);
1261 if (err) break;
1262 err = AudioDeviceGetProperty(deviceID, 0, false, kAudioDevicePropertyDeviceName, &outSize, cStr);
1263 if (err) break;
1264
1265 // do something
1266
1267 break;
1268
1269 case kAudioHardwarePropertyDefaultSystemOutputDevice:
1270 scprintf("%s\n", "***** HARDWARE NOTIFICATION - kAudioHardwarePropertyDefaultSystemOutputDevice\r");
1271 err = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDefaultSystemOutputDevice, &outSize, &outWritable);
1272 if (err) break;
1273 err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultSystemOutputDevice, &outSize, &deviceID);
1274 if (err) break;
1275 err = AudioDeviceGetPropertyInfo(deviceID, 0, false, kAudioDevicePropertyDeviceName, &outSize, &outWritable);
1276 if (err) break;
1277 err = AudioDeviceGetProperty(deviceID, 0, false, kAudioDevicePropertyDeviceName, &outSize, cStr);
1278 if (err) break;
1279
1280 // do something
1281
1282 break;
1283
1284 case kAudioHardwarePropertyDevices:
1285 {
1286 scprintf("%s\n", "***** HARDWARE NOTIFICATION - kAudioHardwarePropertyDevices\r");
1287 }
1288 break;
1289 default:
1290 scprintf("%s\n", "***** HARDWARE NOTIFICATION - %4.4s\r", &inPropertyID);
1291 }
1292
1293 fflush(stdout);
1294 return (noErr);
1295 }
1296
1297
1298
1299
1300 OSStatus AddDeviceListeners(AudioDeviceID inDevice, void *inClientData);
1301
1302 OSStatus AddHardwareListeners(void* inClientData);
1303 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1304 OSStatus AddHardwareListeners(void* inClientData)
1305 {
1306 OSStatus err = noErr;
1307
1308 //non deprecated but requires AudiObject, bleargh
1309 //err= AudioObjectAddPropertyListener(AudioObject, kAudioHardwarePropertyDefaultOutputDevice, hardwareListenerProc, inClientData);
1310
1311 err = AudioHardwareAddPropertyListener(kAudioHardwarePropertyDefaultOutputDevice, hardwareListenerProc, inClientData);
1312 if (err) return err;
1313
1314 err = AudioHardwareAddPropertyListener(kAudioHardwarePropertyDefaultInputDevice, hardwareListenerProc, inClientData);
1315 if (err) return err;
1316
1317 //doesn't matter? Only default looked at by SC?
1318 err = AudioHardwareAddPropertyListener(kAudioHardwarePropertyDefaultSystemOutputDevice, hardwareListenerProc, inClientData);
1319 if (err) return err;
1320
1321 err = AudioHardwareAddPropertyListener(kAudioHardwarePropertyDevices, hardwareListenerProc, inClientData);
1322 if (err) return err;
1323
1324 return (err);
1325 }
1326
1327 bool SC_CoreAudioDriver::DriverStart()
1328 {
1329 if(mWorld->mVerbosity >= 1){
1330 scprintf("->SC_CoreAudioDriver::DriverStart\n");
1331 }
1332 OSStatus err = kAudioHardwareNoError;
1333 AudioTimeStamp now;
1334 UInt32 propertySize;
1335 Boolean writable;
1336
1337 if(mWorld->mVerbosity >= 1){
1338 scprintf("start UseSeparateIO?: %d\n", UseSeparateIO());
1339 }
1340
1341 try {
1342 if (UseSeparateIO()) {
1343 err = AudioDeviceAddIOProc(mOutputDevice, appIOProc, (void *) this); // setup Out device with an IO proc
1344 if (err != kAudioHardwareNoError) {
1345 scprintf("AudioDeviceAddIOProc failed %s %d\n", &err, (int)err);
1346 return false;
1347 }
1348
1349 err = AudioDeviceAddIOProc(mInputDevice, appIOProcSeparateIn, (void *) this); // setup In device with an IO proc
1350 if (err != kAudioHardwareNoError) {
1351 scprintf("AudioDeviceAddIOProc failed %s %d\n", &err, (int)err);
1352 return false;
1353 }
1354
1355
1356 if (mWorld->hw->mInputStreamsEnabled) {
1357 err = AudioDeviceGetPropertyInfo(mInputDevice, 0, true, kAudioDevicePropertyIOProcStreamUsage, &propertySize, &writable);
1358 AudioHardwareIOProcStreamUsage *su = (AudioHardwareIOProcStreamUsage*)malloc(propertySize);
1359 su->mIOProc = (void*)appIOProcSeparateIn;
1360 err = AudioDeviceGetProperty(mInputDevice, 0, true, kAudioDevicePropertyIOProcStreamUsage, &propertySize, su);
1361 int len = std::min(su->mNumberStreams, (UInt32)strlen(mWorld->hw->mInputStreamsEnabled));
1362 for (int i=0; i<len; ++i) {
1363 su->mStreamIsOn[i] = mWorld->hw->mInputStreamsEnabled[i] == '1';
1364 }
1365 err = AudioDeviceSetProperty(mInputDevice, &now, 0, true, kAudioDevicePropertyIOProcStreamUsage, propertySize, su);
1366 }
1367
1368 if (mWorld->hw->mOutputStreamsEnabled) {
1369 err = AudioDeviceGetPropertyInfo(mOutputDevice, 0, false, kAudioDevicePropertyIOProcStreamUsage, &propertySize, &writable);
1370 AudioHardwareIOProcStreamUsage *su = (AudioHardwareIOProcStreamUsage*)malloc(propertySize);
1371 su->mIOProc = (void*)appIOProc;
1372 err = AudioDeviceGetProperty(mOutputDevice, 0, false, kAudioDevicePropertyIOProcStreamUsage, &propertySize, su);
1373 int len = std::min(su->mNumberStreams, (UInt32)strlen(mWorld->hw->mOutputStreamsEnabled));
1374 for (int i=0; i<len; ++i) {
1375 su->mStreamIsOn[i] = mWorld->hw->mOutputStreamsEnabled[i] == '1';
1376 }
1377 err = AudioDeviceSetProperty(mOutputDevice, &now, 0, false, kAudioDevicePropertyIOProcStreamUsage, propertySize, su);
1378 }
1379
1380 err = AudioDeviceStart(mInputDevice, appIOProcSeparateIn); // start playing sound through the device
1381 if (err != kAudioHardwareNoError) {
1382 scprintf("AudioDeviceStart failed %d\n", (int)err);
1383 return false;
1384 }
1385
1386 err = AudioDeviceStart(mOutputDevice, appIOProc); // start playing sound through the device
1387 if (err != kAudioHardwareNoError) {
1388 scprintf("AudioDeviceStart failed %d\n", (int)err);
1389 err = AudioDeviceStop(mInputDevice, appIOProcSeparateIn); // stop playing sound through the device
1390 return false;
1391 }
1392 } else {
1393 err = AudioDeviceAddIOProc(mOutputDevice, appIOProc, (void *) this); // setup our device with an IO proc
1394 if (err != kAudioHardwareNoError) {
1395 scprintf("AudioDeviceAddIOProc failed %d\n", (int)err);
1396 return false;
1397 }
1398
1399 if (mWorld->hw->mInputStreamsEnabled) {
1400 err = AudioDeviceGetPropertyInfo(mOutputDevice, 0, true, kAudioDevicePropertyIOProcStreamUsage, &propertySize, &writable);
1401 AudioHardwareIOProcStreamUsage *su = (AudioHardwareIOProcStreamUsage*)malloc(propertySize);
1402 su->mIOProc = (void*)appIOProc;
1403 err = AudioDeviceGetProperty(mOutputDevice, 0, true, kAudioDevicePropertyIOProcStreamUsage, &propertySize, su);
1404 int len = std::min(su->mNumberStreams, (UInt32)strlen(mWorld->hw->mInputStreamsEnabled));
1405 for (int i=0; i<len; ++i) {
1406 su->mStreamIsOn[i] = mWorld->hw->mInputStreamsEnabled[i] == '1';
1407 }
1408 err = AudioDeviceSetProperty(mOutputDevice, &now, 0, true, kAudioDevicePropertyIOProcStreamUsage, propertySize, su);
1409 }
1410
1411 if (mWorld->hw->mOutputStreamsEnabled) {
1412 err = AudioDeviceGetPropertyInfo(mOutputDevice, 0, false, kAudioDevicePropertyIOProcStreamUsage, &propertySize, &writable);
1413 AudioHardwareIOProcStreamUsage *su = (AudioHardwareIOProcStreamUsage*)malloc(propertySize);
1414 su->mIOProc = (void*)appIOProc;
1415 err = AudioDeviceGetProperty(mOutputDevice, 0, false, kAudioDevicePropertyIOProcStreamUsage, &propertySize, su);
1416 int len = std::min(su->mNumberStreams, (UInt32)strlen(mWorld->hw->mOutputStreamsEnabled));
1417 for (int i=0; i<len; ++i) {
1418 su->mStreamIsOn[i] = mWorld->hw->mOutputStreamsEnabled[i] == '1';
1419 }
1420 err = AudioDeviceSetProperty(mOutputDevice, &now, 0, false, kAudioDevicePropertyIOProcStreamUsage, propertySize, su);
1421 }
1422
1423 err = AudioDeviceStart(mOutputDevice, appIOProc); // start playing sound through the device
1424 if (err != kAudioHardwareNoError) {
1425 scprintf("AudioDeviceStart failed %d\n", (int)err);
1426 return false;
1427 }
1428 }
1429 } catch (...) {
1430 scprintf("exception in SC_CoreAudioDriver::DriverStart\n");
1431 }
1432 if(mWorld->mVerbosity >= 1){
1433 scprintf("<-SC_CoreAudioDriver::DriverStart\n");
1434 }
1435
1436
1437 //http://lists.apple.com/archives/coreaudio-api/2010/Aug/msg00114.html
1438 CFRunLoopRef theRunLoop = NULL;
1439 AudioObjectPropertyAddress theAddress = { kAudioHardwarePropertyRunLoop, kAudioObjectPropertyScopeGlobal, kAudioObjectPropertyElementMaster };
1440 AudioObjectSetPropertyData(kAudioObjectSystemObject, &theAddress, 0, NULL, sizeof(CFRunLoopRef), &theRunLoop);
1441
1442 //for now no spotting of hardware changes, assumption is that ServerOptions inviolate. However, if a device was unplugged, could react to loss of that device
1443 //by switching to system default?
1444 //AddHardwareListeners(NULL);
1445 //note that the number of listeners is stripped down to only one for now, to react to headphone swaps in the case of Built-in Output
1446 AddDeviceListeners(mOutputDevice, this);
1447
1448 return true;
1449 }
1450
1451
1452 bool SC_CoreAudioDriver::StopStart() {
1453
1454 bool test = DriverStop();
1455
1456 bool test2 = DriverStart();
1457 return test && test2;
1458 }
1459
1460
1461 bool SC_CoreAudioDriver::DriverStop()
1462 {
1463 if(mWorld->mVerbosity >= 1){
1464 scprintf("->SC_CoreAudioDriver::DriverStop\n");
1465 }
1466 OSStatus err = kAudioHardwareNoError;
1467
1468 if (UseSeparateIO()) {
1469 err = AudioDeviceStop(mOutputDevice, appIOProc);
1470 if (err != kAudioHardwareNoError) {
1471 scprintf("AudioDeviceStop A failed %p\n", err);
1472 return false;
1473 }
1474 err = AudioDeviceRemoveIOProc(mOutputDevice, appIOProc);
1475 if (err != kAudioHardwareNoError) {
1476 scprintf("AudioDeviceRemoveIOProc A failed %p\n", err);
1477 return false;
1478 }
1479
1480 err = AudioDeviceStop(mInputDevice, appIOProcSeparateIn);
1481 if (err != kAudioHardwareNoError) {
1482 scprintf("AudioDeviceStop A failed %p\n", err);
1483 return false;
1484 }
1485
1486 err = AudioDeviceRemoveIOProc(mInputDevice, appIOProcSeparateIn);
1487 if (err != kAudioHardwareNoError) {
1488 scprintf("AudioDeviceRemoveIOProc A failed %p\n", err);
1489 return false;
1490 }
1491 } else {
1492 err = AudioDeviceStop(mOutputDevice, appIOProc);
1493 if (err != kAudioHardwareNoError) {
1494 scprintf("AudioDeviceStop B failed %p\n", err);
1495 return false;
1496 }
1497
1498 err = AudioDeviceRemoveIOProc(mOutputDevice, appIOProc);
1499 if (err != kAudioHardwareNoError) {
1500 scprintf("AudioDeviceRemoveIOProc B failed %p\n", err);
1501 return false;
1502 }
1503 }
1504 if(mWorld->mVerbosity >= 1){
1505 scprintf("<-SC_CoreAudioDriver::DriverStop\n");
1506 }
1507 return true;
1508 }
1509
1510
1511 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1512 // Listen for Device Properties and update interface and globals
1513 OSStatus deviceListenerProc ( AudioDeviceID inDevice,
1514 UInt32 inLine,
1515 Boolean isInput,
1516 AudioDevicePropertyID inPropertyID,
1517 void* inClientData)
1518 {
1519 OSStatus err = noErr;
1520 UInt32 outSize,
1521 theUIntData,
1522 mute,
1523 playThru;
1524 UInt32 tLong;
1525 Float32 vol;
1526
1527
1528 SC_CoreAudioDriver* coredriver = (SC_CoreAudioDriver*) inClientData;
1529
1530 switch(inPropertyID)
1531 {
1532 // case kAudioDevicePropertyBufferSize:
1533 // scprintf("%s\n", "***** DEVICE NOTIFICATION - kAudioDevicePropertyBufferSize\r");
1534 // outSize = sizeof(UInt32);
1535 // err = AudioDeviceGetProperty(inDevice, 0, 0, kAudioDevicePropertyBufferSize, &outSize, &theUIntData);
1536 //
1537 // break;
1538 //
1539 // case kAudioDevicePropertyBufferFrameSize:
1540 // scprintf("%s\n", "***** DEVICE NOTIFICATION - kAudioDevicePropertyBufferFrameSize\r");
1541 // outSize = sizeof(UInt32);
1542 // err = AudioDeviceGetProperty(inDevice, 0, 0, kAudioDevicePropertyBufferFrameSize, &outSize, &theUIntData);
1543 //
1544 // break;
1545 //
1546 // case kAudioDevicePropertyBufferSizeRange:
1547 // {
1548 // AudioValueRange range;
1549 //
1550 // scprintf("%s\n", "***** DEVICE NOTIFICATION - kAudioDevicePropertyBufferSizeRange\r");
1551 // outSize = sizeof(AudioValueRange);
1552 // err = AudioDeviceGetProperty(inDevice, 0, isInput, kAudioDevicePropertyBufferSizeRange, &outSize, &range);
1553 // }
1554 // break;
1555 //
1556 // case kAudioDevicePropertyStreamFormat:
1557 // scprintf("%s\n", "***** DEVICE NOTIFICATION - kAudioDevicePropertyStreamFormat\r");
1558 // break;
1559 //
1560 // case kAudioDevicePropertyDeviceIsRunning:
1561 // scprintf("%s\n", "***** DEVICE NOTIFICATION - kAudioDevicePropertyDeviceIsRunning\r");
1562 // outSize = sizeof(UInt32);
1563 // err = AudioDeviceGetProperty(inDevice, inLine, isInput, kAudioDevicePropertyDeviceIsRunning, &outSize, &theUIntData);
1564 //
1565 // //when change device get up to four messages:
1566 // //isInput ==NO or YES theUIntData= 0 or 1 from old and possibly new device (ieheadphone swap)
1567 //
1568 //
1569 //
1570 // break;
1571 //
1572 // case kAudioDevicePropertyVolumeScalar:
1573 // scprintf("%s\n", "***** DEVICE NOTIFICATION - kAudioDevicePropertyVolumeScalar\r");
1574 // outSize = sizeof(Float32);
1575 // err = AudioDeviceGetProperty(inDevice, inLine, isInput, kAudioDevicePropertyVolumeScalar, &outSize, &vol);
1576 // break;
1577 //
1578 // case kAudioDevicePropertyMute:
1579 // scprintf("%s\n", "***** DEVICE NOTIFICATION - kAudioDevicePropertyMute\r");
1580 // outSize = sizeof(UInt32);
1581 // err = AudioDeviceGetProperty(inDevice, inLine, isInput, kAudioDevicePropertyMute, &outSize, &mute);
1582 // break;
1583 //
1584 // case kAudioDevicePropertyPlayThru:
1585 // scprintf("%s\n", "***** DEVICE NOTIFICATION - kAudioDevicePropertyPlayThru\r");
1586 // outSize = sizeof(UInt32);
1587 // err = AudioDeviceGetProperty(inDevice, inLine, isInput, kAudioDevicePropertyPlayThru, &outSize, &playThru);
1588 //
1589 // break;
1590 //
1591 // case kAudioDevicePropertyDeviceIsAlive:
1592 // scprintf("%s\n", "***** DEVICE NOTIFICATION - kAudioDevicePropertyDeviceIsAlive\r");
1593 // outSize = sizeof(UInt32);
1594 // err = AudioDeviceGetProperty(inDevice, 0, false, kAudioDevicePropertyDeviceIsAlive, &outSize, &tLong);
1595 //
1596 // break;
1597
1598 case kAudioDevicePropertyDataSource:
1599 //Don't print anything
1600 //scprintf("%s\n", "***** DEVICE NOTIFICATION - kAudioDevicePropertyDataSource\r");
1601 // get the source
1602 // match the source to one of the available sources and return the index of that source
1603 //SetControlValue(control, (chan->vol) * 100);
1604
1605 //will get this message anyway even if don't have built-in output seleected.
1606 //so need to react based on whether current output IS built-in output. Annoyingly, headphone unplugging/plugging also sends default and system output + default input change hardware messages
1607 //swapping to new driver
1608 if (coredriver->builtinoutputflag_==1)
1609 coredriver->StopStart();
1610
1611
1612 break;
1613
1614 //default:
1615 // scprintf("%s\n", "***** DEVICE NOTIFICATION - %4.4s\r", &inPropertyID);
1616 }
1617
1618 //fflush(stdout);
1619 return (err);
1620 }
1621
1622 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1623 OSStatus streamListenerProc ( AudioStreamID inStream,
1624 UInt32 inChannel,
1625 AudioDevicePropertyID inPropertyID,
1626 void* inClientData)
1627 {
1628 OSStatus err = noErr;
1629
1630 switch(inPropertyID)
1631 {
1632 case kAudioStreamPropertyPhysicalFormat:
1633 scprintf("%s\n", "***** STREAM NOTIFICATION - kAudioStreamPropertyPhysicalFormat\r");
1634 break;
1635
1636 case kAudioDevicePropertyStreamFormat:
1637 scprintf("%s\n", "***** STREAM NOTIFICATION - kAudioDevicePropertyStreamFormat\r");
1638 break;
1639
1640 default:
1641 break;
1642 }
1643
1644 fflush(stdout);
1645
1646 return (err);
1647 }
1648
1649 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1650 OSStatus AddStreamListeners (AudioDeviceID inDevice, AudioDevicePropertyID inPropertyID, Boolean isInput, void *inClientData);
1651
1652 OSStatus AddDeviceListeners(AudioDeviceID inDevice, void *inClientData)
1653 {
1654 OSStatus err = noErr;
1655
1656 //ONLY REACTING TO HEADPHONE SWAPS FOR NOW
1657 //
1658 //
1659 //
1660 // // kAudioDevicePropertyBufferSize
1661 // err = AudioDeviceAddPropertyListener(inDevice, 0, false, kAudioDevicePropertyBufferSize, deviceListenerProc, inClientData);
1662 // if (err) return err;
1663 //
1664 // err = AudioDeviceAddPropertyListener(inDevice, 0, true, kAudioDevicePropertyBufferSize, deviceListenerProc, inClientData);
1665 // if (err) return err;
1666 //
1667 //
1668 // // kAudioDevicePropertyBufferFrameSize
1669 // err = AudioDeviceAddPropertyListener(inDevice, 0, false, kAudioDevicePropertyBufferFrameSize, deviceListenerProc, inClientData);
1670 // if (err) return err;
1671 //
1672 // err = AudioDeviceAddPropertyListener(inDevice, 0, true, kAudioDevicePropertyBufferFrameSize, deviceListenerProc, inClientData);
1673 // if (err) return err;
1674 //
1675 // // kAudioDevicePropertyDeviceIsRunning
1676 // err = AudioDeviceAddPropertyListener(inDevice, 0, false, kAudioDevicePropertyDeviceIsRunning, deviceListenerProc, inClientData);
1677 // if (err) return err;
1678 //
1679 // err = AudioDeviceAddPropertyListener(inDevice, 0, true, kAudioDevicePropertyDeviceIsRunning, deviceListenerProc, inClientData);
1680 // if (err) return err;
1681 //
1682 ///*
1683 // for (i = 0; i <= deviceInfo->totalOutputChannels; i++)
1684 // {
1685 // // kAudioDevicePropertyVolumeScalar output
1686 // err = AudioDeviceAddPropertyListener(inDevice, i, false, kAudioDevicePropertyVolumeScalar, deviceListenerProc, inClientData);
1687 // if (err) return err;
1688 //
1689 // // kAudioDevicePropertyVolumeMute output
1690 // err = AudioDeviceAddPropertyListener(inDevice, i, false, kAudioDevicePropertyMute, deviceListenerProc, inClientData);
1691 // if (err) return err;
1692 // }
1693 //
1694 // for (i = 0; i <= deviceInfo->totalInputChannels; i++)
1695 // {
1696 // // kAudioDevicePropertyVolumeScalar input
1697 // err = AudioDeviceAddPropertyListener(inDevice, i, true, kAudioDevicePropertyVolumeScalar, deviceListenerProc, inClientData);
1698 // if (err) return err;
1699 //
1700 // // kAudioDevicePropertyVolumeMute input
1701 // err = AudioDeviceAddPropertyListener(inDevice, i, true, kAudioDevicePropertyMute, deviceListenerProc, inClientData);
1702 // if (err) return err;
1703 //
1704 // // kAudioDevicePropertyPlayThru input
1705 // err = AudioDeviceAddPropertyListener(inDevice, i, true, kAudioDevicePropertyPlayThru, deviceListenerProc, inClientData);
1706 // if (err) return err;
1707 // }
1708 //*/
1709 //
1710 // // kAudioDevicePropertyDeviceIsAlive
1711 // err = AudioDeviceAddPropertyListener(inDevice, 0, false, kAudioDevicePropertyDeviceIsAlive, deviceListenerProc, inClientData);
1712 // if (err) return err;
1713 //
1714 // err = AudioDeviceAddPropertyListener(inDevice, 0, true, kAudioDevicePropertyDeviceIsAlive, deviceListenerProc, inClientData);
1715 // if (err) return err;
1716 //
1717 //
1718 // // kAudioDevicePropertyStreamFormat
1719 // err = AudioDeviceAddPropertyListener(inDevice, 0, false, kAudioDevicePropertyStreamFormat, deviceListenerProc, inClientData);
1720 // if (err) return err;
1721 //
1722 // err = AudioDeviceAddPropertyListener(inDevice, 0, true, kAudioDevicePropertyStreamFormat, deviceListenerProc, inClientData);
1723 // if (err) return err;
1724 //
1725 // // kAudioDevicePropertyBufferSizeRange
1726 // err = AudioDeviceAddPropertyListener(inDevice, 0, false, kAudioDevicePropertyBufferSizeRange, deviceListenerProc, inClientData);
1727 // if (err) return err;
1728 //
1729 // err = AudioDeviceAddPropertyListener(inDevice, 0, true, kAudioDevicePropertyBufferSizeRange, deviceListenerProc, inClientData);
1730 // if (err) return err;
1731
1732 //kAudioDevicePropertyDataSource
1733 err = AudioDeviceAddPropertyListener(inDevice, 0, false, kAudioDevicePropertyDataSource, deviceListenerProc, inClientData);
1734 if (err) return err;
1735
1736 // err = AudioDeviceAddPropertyListener(inDevice, 0, true, kAudioDevicePropertyDataSource, deviceListenerProc, inClientData);
1737 // if (err) return err;
1738
1739
1740 //AddStreamListeners (inDevice, kAudioStreamPropertyPhysicalFormat, false, inClientData);
1741
1742 //AddStreamListeners (inDevice, kAudioStreamPropertyPhysicalFormat, true, inClientData);
1743
1744 return (err);
1745 }
1746
1747
1748
1749 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1750 OSStatus AddStreamListeners (AudioDeviceID inDevice, AudioDevicePropertyID inPropertyID, Boolean isInput, void *inClientData)
1751 {
1752 OSStatus err = noErr;
1753 UInt32 count;
1754 UInt32 outSize;
1755 Boolean outWritable;
1756 AudioStreamID *streamList = nil;
1757
1758 err = AudioDeviceGetPropertyInfo(inDevice, 0, isInput, kAudioDevicePropertyStreams, &outSize, &outWritable);
1759 if (err == noErr)
1760 {
1761 streamList = (AudioStreamID*)malloc(outSize);
1762 err = AudioDeviceGetProperty(inDevice, 0, isInput, kAudioDevicePropertyStreams, &outSize, streamList);
1763 if (err == noErr)
1764 {
1765 for (count = 0; count < (outSize / sizeof(AudioStreamID)); count++)
1766 {
1767 err = AudioStreamAddPropertyListener(streamList[count], 0, inPropertyID, streamListenerProc, inClientData);
1768 if (err) return err;
1769 }
1770 }
1771 if (streamList != nil)
1772 {
1773 free(streamList);
1774 streamList = nil;
1775 }
1776 }
1777
1778
1779 return (noErr);
1780 }
1781 #endif // SC_AUDIO_API_COREAUDIO
1782
1783
1784
1785
1786 // =====================================================================
1787 // Audio driver (CoreAudioIPHONE)
1788
1789 #if SC_AUDIO_API == SC_AUDIO_API_COREAUDIOIPHONE
1790 SC_iCoreAudioDriver::SC_iCoreAudioDriver(struct World *inWorld)
1791 : SC_AudioDriver(inWorld)
1792 {
1793 receivedIn = 0;
1794 }
1795
1796 SC_iCoreAudioDriver::~SC_iCoreAudioDriver()
1797 {
1798 }
1799
1800 /*
1801 OSStatus appIOProc2 (AudioDeviceID inDevice, const AudioTimeStamp* inNow,
1802 const AudioBufferList* inInputData,
1803 const AudioTimeStamp* inInputTime,
1804 AudioBufferList* outOutputData,
1805 const AudioTimeStamp* inOutputTime,
1806 void* defptr);
1807 OSStatus appIOProc2 (AudioDeviceID inDevice, const AudioTimeStamp* inNow,
1808 const AudioBufferList* inInputData,
1809 const AudioTimeStamp* inInputTime,
1810 AudioBufferList* outOutputData,
1811 const AudioTimeStamp* inOutputTime,
1812 void* defptr)
1813 {
1814 SC_CoreAudioDriver* def = (SC_CoreAudioDriver*)defptr;
1815
1816 int64 oscTime = CoreAudioHostTimeToOSC(inOutputTime->mHostTime);
1817
1818 AudioTimeStamp readTime;
1819 readTime.mSampleTime = inNow->mSampleTime - def->SafetyOffset() - def->NumSamplesPerCallback();
1820 readTime.mFlags = kAudioTimeStampSampleTimeValid;
1821
1822 AudioDeviceRead(def->InputDevice(), &readTime, def->GetInputBufferList());
1823
1824 def->Run(def->GetInputBufferList(), outOutputData, oscTime);
1825
1826 return kAudioHardwareNoError;
1827 }
1828 */
1829
1830
1831 OSStatus InputCallback(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData)
1832 {
1833 SC_iCoreAudioDriver *driver = (SC_iCoreAudioDriver *) inRefCon;
1834
1835 if (driver->receivedIn)
1836 {
1837 //printf("exit input with no data \n");
1838 return noErr;
1839 }
1840
1841 OSStatus ret = AudioUnitRender(driver->inputUnit, ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, driver->buflist);
1842 if (ret)
1843 {
1844 //printf("no input !\n");
1845 return noErr;
1846 }
1847 driver->receivedIn = 1;
1848
1849 return noErr;
1850 }
1851
1852 OSStatus RenderCallback(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData)
1853 {
1854 SC_iCoreAudioDriver *driver = (SC_iCoreAudioDriver *) inRefCon;
1855
1856 #ifndef SC_IPHONE
1857 if (!driver->receivedIn)
1858 {
1859 //printf("exit output with no data \n");
1860 return noErr;
1861 }
1862 #endif
1863
1864 //float *fbuffer = (float *) driver->converter_buffer;
1865
1866 int i;
1867 for (i=0; i<inNumberFrames; i++)
1868 {
1869 signed short s = ((signed short *)driver->buflist->mBuffers[0].mData)[i];
1870 int k = s + 0x43c00000;
1871 float f = *((float *) &k);
1872 ((float *)driver->floatInputList->mBuffers[0].mData)[i] = f - 384.0f;
1873 }
1874
1875 int64 oscTime = GetCurrentOSCTime();
1876 //driver->Run(driver->floatInputList, driver->floatOutputList, oscTime);
1877 driver->Run(driver->floatInputList, ioData, oscTime);
1878
1879 for (i=0; i<inNumberFrames; i++)
1880 {
1881 float f1 = ((float *)ioData->mBuffers[0].mData)[i];
1882 float f2 = ((float *)ioData->mBuffers[1].mData)[i];
1883 ((int *) ioData->mBuffers[0].mData)[i] = (int) (f1*16777216);
1884 ((int *) ioData->mBuffers[1].mData)[i] = (int) (f2*16777216);
1885 }
1886
1887
1888 /*
1889 unsigned long size = 2*1024*sizeof(unsigned long);
1890 OSStatus ret = AudioConverterConvertBuffer(driver->converter_in_to_F32, driver->buflist->mBuffers[0].mDataByteSize, driver->buflist->mBuffers[0].mData, &size, driver->converter_buffer);
1891 if (ret)
1892 {
1893 printf("couldn't convert !\n");
1894 return noErr;
1895 }
1896
1897 int i;
1898 for (i=0; i<inNumberFrames; i++)
1899 {
1900 ((int *)ioData->mBuffers[0].mData)[i] = ((int *)ioData->mBuffers[1].mData)[i] = driver->converter_buffer[2*i];
1901 }
1902 */
1903 driver->receivedIn = 0;
1904 return noErr;
1905 }
1906
1907
1908
1909 void SC_iCoreAudioDriver::Run(const AudioBufferList* inInputData,
1910 AudioBufferList* outOutputData, int64 oscTime)
1911 {
1912 int64 systemTimeBefore = GetMicroseconds();
1913
1914 World *world = mWorld;
1915
1916 try {
1917 int numSamplesPerCallback = NumSamplesPerCallback();
1918 mOSCbuftime = oscTime;
1919
1920 #ifdef __APPLE__
1921 sc_SetDenormalFlags();
1922 #endif
1923
1924 mFromEngine.Free();
1925
1926 mToEngine.Perform();
1927 mOscPacketsToEngine.Perform();
1928 //printf("mOscPacketsToEngine : %d micros\n", (int) (GetMicroseconds()-systemTimeBefore));
1929
1930 int bufFrames = world->mBufLength;
1931 int numBufs = numSamplesPerCallback / bufFrames;
1932
1933 int numInputBuses = world->mNumInputs;
1934 int numOutputBuses = world->mNumOutputs;
1935 float* inputBuses = world->mAudioBus + world->mNumOutputs * bufFrames;
1936 float* outputBuses = world->mAudioBus;
1937 int32* inputTouched = world->mAudioBusTouched + world->mNumOutputs;
1938 int32* outputTouched = world->mAudioBusTouched;
1939 int numInputStreams = inInputData ? inInputData->mNumberBuffers : 0;
1940 int numOutputStreams = outOutputData ? outOutputData->mNumberBuffers : 0;
1941
1942 //static int go = 0;
1943
1944 int64 oscInc = mOSCincrement;
1945 double oscToSamples = mOSCtoSamples;
1946
1947 int bufFramePos = 0;
1948
1949 for (int i = 0; i < numBufs; ++i, world->mBufCounter++, bufFramePos += bufFrames) {
1950 int32 bufCounter = world->mBufCounter;
1951
1952 // de-interleave input
1953 if (inInputData) {
1954 const AudioBuffer* inInputDataBuffers = inInputData->mBuffers;
1955 for (int s = 0, b = 0; b<numInputBuses && s < numInputStreams; s++) {
1956 const AudioBuffer* buf = inInputDataBuffers + s;
1957 int nchan = buf->mNumberChannels;
1958 if (buf->mData) {
1959 float *busdata = inputBuses + b * bufFrames;
1960 float *bufdata = (float*)buf->mData + bufFramePos * nchan;
1961 if (nchan == 1)
1962 {
1963 #ifdef IPHONE_VEC
1964 vcopy(busdata, bufdata, bufFrames);
1965 #else
1966 for (int k=0; k<bufFrames; ++k)
1967 {
1968 busdata[k] = bufdata[k];
1969 }
1970 #endif
1971 inputTouched[b] = bufCounter;
1972 } else {
1973 int minchan = sc_min(nchan, numInputBuses - b);
1974 for (int j=0; j<minchan; ++j, busdata += bufFrames) {
1975 for (int k=0, m=j; k<bufFrames; ++k, m += nchan) {
1976 busdata[k] = bufdata[m];
1977 }
1978 inputTouched[b+j] = bufCounter;
1979 }
1980 }
1981 b += nchan;
1982 }
1983 }
1984 }
1985 //count++;
1986
1987 int64 schedTime;
1988 int64 nextTime = oscTime + oscInc;
1989
1990 while ((schedTime = mScheduler.NextTime()) <= nextTime) {
1991 float diffTime = (float)(schedTime - oscTime) * oscToSamples + 0.5;
1992 float diffTimeFloor = floor(diffTime);
1993 world->mSampleOffset = (int)diffTimeFloor;
1994 world->mSubsampleOffset = diffTime - diffTimeFloor;
1995
1996 if (world->mSampleOffset < 0) world->mSampleOffset = 0;
1997 else if (world->mSampleOffset >= world->mBufLength) world->mSampleOffset = world->mBufLength-1;
1998
1999 SC_ScheduledEvent event = mScheduler.Remove();
2000 event.Perform();
2001 }
2002 world->mSampleOffset = 0;
2003 world->mSubsampleOffset = 0.f;
2004
2005 //int64 now = GetMicroseconds();
2006
2007 World_Run(world);
2008
2009 //printf("world run : %fms\n", (float) (GetMicroseconds()-now)/1000);
2010
2011
2012 // interleave output
2013 AudioBuffer* outOutputDataBuffers = outOutputData->mBuffers;
2014 for (int s = 0, b = 0; b<numOutputBuses && s < numOutputStreams; s++) {
2015 AudioBuffer* buf = outOutputDataBuffers + s;
2016 int nchan = buf->mNumberChannels;
2017 if (buf->mData) {
2018 float *busdata = outputBuses + b * bufFrames;
2019 float *bufdata = (float*)buf->mData + bufFramePos * nchan;
2020 if (nchan == 1)
2021 {
2022 if (outputTouched[b] == bufCounter)
2023 {
2024 #ifdef IPHONE_VEC
2025 vcopy(bufdata, busdata, bufFrames);
2026 #else
2027 for (int k=0; k<bufFrames; ++k)
2028 {
2029 bufdata[k] = busdata[k];
2030 }
2031 #endif
2032 }
2033 } else {
2034 int minchan = sc_min(nchan, numOutputBuses - b);
2035 for (int j=0; j<minchan; ++j, busdata += bufFrames) {
2036 if (outputTouched[b+j] == bufCounter) {
2037 for (int k=0, m=j; k<bufFrames; ++k, m += nchan) {
2038 bufdata[m] = busdata[k];
2039 }
2040 }
2041 }
2042 }
2043 b += nchan;
2044 }
2045 }
2046 oscTime = mOSCbuftime = nextTime;
2047 }
2048 } catch (std::exception& exc) {
2049 scprintf("exception in real time: %s\n", exc.what());
2050 } catch (...) {
2051 scprintf("unknown exception in real time\n");
2052 }
2053
2054 int64 systemTimeAfter = GetMicroseconds();
2055 double calcTime = (double)(systemTimeAfter - systemTimeBefore) * 1e-6;
2056 double cpuUsage = calcTime * mBuffersPerSecond * 100.;
2057 mAvgCPU = mAvgCPU + 0.1 * (cpuUsage - mAvgCPU);
2058 if (cpuUsage > mPeakCPU || --mPeakCounter <= 0)
2059 {
2060 mPeakCPU = cpuUsage;
2061 mPeakCounter = mMaxPeakCounter;
2062 }
2063
2064 mAudioSync.Signal();
2065 }
2066
2067
2068
2069
2070 /*
2071 OSStatus appIOProc (AudioDeviceID device, const AudioTimeStamp* inNow,
2072 const AudioBufferList* inInputData,
2073 const AudioTimeStamp* inInputTime,
2074 AudioBufferList* outOutputData,
2075 const AudioTimeStamp* inOutputTime,
2076 void* defptr)
2077 {
2078 SC_CoreAudioDriver* def = (SC_CoreAudioDriver*)defptr;
2079 int64 oscTime = CoreAudioHostTimeToOSC(inOutputTime->mHostTime);
2080
2081 double hostSecs = (double)AudioConvertHostTimeToNanos(inOutputTime->mHostTime) * 1e-9;
2082 double sampleTime = inOutputTime->mSampleTime;
2083 if (def->mStartHostSecs == 0) {
2084 def->mStartHostSecs = hostSecs;
2085 def->mStartSampleTime = sampleTime;
2086 } else {
2087 double instSampleRate = (sampleTime - def->mPrevSampleTime)/(hostSecs - def->mPrevHostSecs);
2088 double smoothSampleRate = def->mSmoothSampleRate;
2089 smoothSampleRate = smoothSampleRate + 0.002 * (instSampleRate - smoothSampleRate);
2090 def->mOSCincrement = (int64)(def->mOSCincrementNumerator / smoothSampleRate);
2091 def->mSmoothSampleRate = smoothSampleRate;
2092
2093 #if 0
2094 double avgSampleRate = (sampleTime - def->mStartSampleTime)/(hostSecs - def->mStartHostSecs);
2095 double jitter = (smoothSampleRate * (hostSecs - def->mPrevHostSecs)) - (sampleTime - def->mPrevSampleTime);
2096 double drift = (smoothSampleRate - def->mSampleRate) * (hostSecs - def->mStartHostSecs);
2097 //if (fabs(jitter) > 0.01) {
2098 scprintf("avgSR %.6f smoothSR %.6f instSR %.6f jitter %.6f drift %.6f inc %lld\n",
2099 avgSampleRate, smoothSampleRate, instSampleRate, jitter, drift, def->mOSCincrement);
2100 //}
2101 #endif
2102 }
2103 def->mPrevHostSecs = hostSecs;
2104 def->mPrevSampleTime = sampleTime;
2105
2106 if (!def->UseSeparateIO())
2107 {
2108 def->Run(inInputData, outOutputData, oscTime);
2109 return kAudioHardwareNoError;
2110 }
2111
2112
2113 def->Run(lastInputData, outOutputData, oscTime);
2114 lastInputData = 0;
2115
2116 return kAudioHardwareNoError;
2117 }
2118 */
2119
2120
2121 void AudioSessionInterruptionCbk(void *inClientData, UInt32 inInterruptionState)
2122 {
2123 }
2124
2125
2126 bool SC_iCoreAudioDriver::DriverSetup(int* outNumSamplesPerCallback, double* outSampleRate)
2127 {
2128 AudioSessionInitialize(0, 0, AudioSessionInterruptionCbk, 0);
2129 unsigned long category = kAudioSessionCategory_PlayAndRecord;
2130 #ifdef SC_IPHONE
2131 UInt32 micInput, micInputSize = sizeof(&micInput);
2132 AudioSessionGetProperty(kAudioSessionProperty_AudioInputAvailable, &micInputSize, &micInput);
2133 if(!micInput) {
2134 category = kAudioSessionCategory_MediaPlayback;
2135 scprintf("SC_IPHONE: WARNING - no audio input available\n");
2136 }
2137 #endif
2138 AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(category), &category);
2139
2140 if (mPreferredHardwareBufferFrameSize)
2141 {
2142 Float32 preferredBufferSize = (float) mPreferredHardwareBufferFrameSize/44100.f;
2143 AudioSessionSetProperty(kAudioSessionProperty_PreferredHardwareIOBufferDuration, sizeof(preferredBufferSize), &preferredBufferSize);
2144 }
2145
2146 AudioSessionSetActive(true);
2147
2148 float actualBufferDuration;
2149 UInt32 size = sizeof(actualBufferDuration);
2150 AudioSessionGetProperty(kAudioSessionProperty_CurrentHardwareIOBufferDuration, &size, &actualBufferDuration);
2151
2152 *outNumSamplesPerCallback = (int) (actualBufferDuration*44100.f+0.5f);
2153 *outSampleRate = 44100;
2154
2155 AudioComponentDescription desc;
2156 desc.componentType = kAudioUnitType_Output;
2157 desc.componentSubType = kAudioUnitSubType_RemoteIO;
2158 desc.componentManufacturer = kAudioUnitManufacturer_Apple;
2159
2160 NewAUGraph(&graph);
2161 AUNode node;
2162 AudioUnit unit;
2163 OSStatus ret = AUGraphAddNode(graph, &desc, &node);
2164 //printf("node : %d\n", node);
2165 AUGraphOpen(graph);
2166
2167 ret = AUGraphNodeInfo(graph, node, &desc, &unit);
2168 //printf("%d\n", unit);
2169
2170
2171
2172 AudioComponent remoteIOComp = AudioComponentFindNext(0, &desc);
2173 if (AudioComponentInstanceNew(remoteIOComp, &inputUnit)!=noErr)
2174 {
2175 //printf("error instantiating RemoteIO\n");
2176 return false;
2177 }
2178 //printf("instantiated : %d\n", inputUnit);
2179
2180 int enableIO = 1;
2181 ret = AudioUnitSetProperty(inputUnit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Input, 1, &enableIO, sizeof(enableIO));
2182 if (ret!=noErr)
2183 {
2184 //printf("can't set input : %d\n", ret);
2185 return false;
2186 }
2187 enableIO = 0;
2188 ret = AudioUnitSetProperty(inputUnit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Output, 0, &enableIO, sizeof(enableIO));
2189 if (ret!=noErr)
2190 {
2191 //printf("can't set output : %d\n", ret);
2192 return false;
2193 }
2194
2195 AudioUnitInitialize(inputUnit);
2196
2197 unsigned long bufferSizeBytes = 1024 * sizeof(unsigned long);
2198 buflist = (AudioBufferList *) malloc(sizeof(AudioBufferList));
2199 buflist->mNumberBuffers = 1;
2200 buflist->mBuffers[0].mDataByteSize = bufferSizeBytes;
2201 buflist->mBuffers[0].mData = malloc(bufferSizeBytes);
2202 buflist->mBuffers[0].mNumberChannels = 1;
2203
2204 floatInputList = (AudioBufferList *) malloc(sizeof(AudioBufferList));
2205 floatInputList->mNumberBuffers = 1;
2206 floatInputList->mBuffers[0].mDataByteSize = bufferSizeBytes;
2207 floatInputList->mBuffers[0].mData = malloc(bufferSizeBytes);
2208 floatInputList->mBuffers[0].mNumberChannels = 1;
2209
2210 /*
2211 floatOutputList = (AudioBufferList *) malloc(sizeof(AudioBufferList)+sizeof(AudioBuffer));
2212 floatOutputList->mNumberBuffers = 2;
2213 floatOutputList->mBuffers[0].mDataByteSize = bufferSizeBytes;
2214 floatOutputList->mBuffers[0].mData = malloc(bufferSizeBytes);
2215 floatOutputList->mBuffers[0].mNumberChannels = 1;
2216 floatOutputList->mBuffers[1].mDataByteSize = bufferSizeBytes;
2217 floatOutputList->mBuffers[1].mData = malloc(bufferSizeBytes);
2218 floatOutputList->mBuffers[1].mNumberChannels = 1;
2219 */
2220
2221 AURenderCallbackStruct inputStruct;
2222 inputStruct.inputProc = InputCallback;
2223 inputStruct.inputProcRefCon = this;
2224 ret = AudioUnitSetProperty(inputUnit, kAudioOutputUnitProperty_SetInputCallback, kAudioUnitScope_Input, 0, &inputStruct, sizeof(inputStruct));
2225
2226 AURenderCallbackStruct renderStruct;
2227 renderStruct.inputProc = RenderCallback;
2228 renderStruct.inputProcRefCon = this;
2229 ret = AudioUnitSetProperty(unit, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input, 0, &renderStruct, sizeof(renderStruct));
2230
2231 AudioStreamBasicDescription streamFormat;
2232 streamFormat.mFormatID = kAudioFormatLinearPCM;
2233 streamFormat.mFormatFlags =
2234 kAudioFormatFlagIsSignedInteger
2235 | kAudioFormatFlagsNativeEndian
2236 | kLinearPCMFormatFlagIsNonInterleaved
2237 | (24 << kLinearPCMFormatFlagsSampleFractionShift);
2238 streamFormat.mSampleRate = 44100;
2239 streamFormat.mBitsPerChannel = 32;
2240 streamFormat.mChannelsPerFrame = 2;
2241 streamFormat.mFramesPerPacket = 1;
2242 streamFormat.mBytesPerFrame = ( streamFormat.mBitsPerChannel / 8 );
2243 streamFormat.mBytesPerPacket = streamFormat.mBytesPerFrame *
2244 streamFormat.mFramesPerPacket;
2245
2246 ret = AudioUnitSetProperty(unit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &streamFormat, sizeof(streamFormat));
2247
2248
2249 AudioStreamBasicDescription audioFormat;
2250 audioFormat.mSampleRate = 44100.00;
2251 audioFormat.mFormatID = kAudioFormatLinearPCM;
2252 audioFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
2253 audioFormat.mFramesPerPacket = 1;
2254 audioFormat.mChannelsPerFrame = 1;
2255 audioFormat.mBitsPerChannel = 16;
2256 audioFormat.mBytesPerPacket = 2;
2257 audioFormat.mBytesPerFrame = 2;
2258 ret = AudioUnitSetProperty(inputUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 1, &audioFormat, sizeof(audioFormat));
2259
2260
2261 /*
2262 AudioStreamBasicDescription d;
2263 size = sizeof(d);
2264 ret = AudioUnitGetProperty(unit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 1, &d, &size);
2265
2266 AudioStreamBasicDescription inputFormat;
2267 AudioStreamBasicDescription outputFormat;
2268 AudioStreamBasicDescription f32Format;
2269
2270 size = sizeof(AudioStreamBasicDescription);
2271 ret = AudioUnitGetProperty(inputUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &inputFormat, &size);
2272 ret = AudioUnitGetProperty(inputUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 1, &inputFormat, &size);
2273 ret = AudioUnitGetProperty(inputUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 0, &outputFormat, &size);
2274 ret = AudioUnitGetProperty(inputUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, 1, &outputFormat, &size);
2275
2276 outputFormat.mChannelsPerFrame = 1;
2277
2278 f32Format.mSampleRate = inputFormat.mSampleRate;
2279 f32Format.mFormatID = inputFormat.mFormatID;
2280 f32Format.mFormatFlags = kAudioFormatFlagsNativeFloatPacked;
2281 f32Format.mBytesPerPacket = 4;
2282 f32Format.mFramesPerPacket = 1;
2283 f32Format.mBytesPerFrame = 4;
2284 f32Format.mChannelsPerFrame = 1;
2285 f32Format.mBitsPerChannel = 32;
2286 f32Format.mReserved = 0;
2287
2288 ret = AudioConverterNew(&inputFormat, &f32Format, &converter_in_to_F32);
2289 ret = AudioConverterNew(&f32Format, &outputFormat, &converter_F32_to_out);
2290 ret = AudioConverterNew(&inputFormat, &outputFormat, &converter_in_to_out);
2291 */
2292 AUGraphInitialize(graph);
2293
2294 if(mWorld->mVerbosity >= 0){
2295 scprintf("<-SC_CoreAudioDriver::Setup world %p\n", mWorld);
2296 }
2297 return true;
2298 }
2299
2300 bool SC_iCoreAudioDriver::DriverStart()
2301 {
2302 if(mWorld->mVerbosity >= 0){
2303 scprintf("->SC_CoreAudioDriver::DriverStart\n");
2304 }
2305
2306 try
2307 {
2308 OSStatus ret = AUGraphStart(graph);
2309 AudioOutputUnitStart(inputUnit);
2310 } catch (...) {
2311 scprintf("exception in SC_CoreAudioDriver::DriverStart\n");
2312 }
2313 if(mWorld->mVerbosity >= 0){
2314 scprintf("<-SC_CoreAudioDriver::DriverStart\n");
2315 }
2316 return true;
2317 }
2318
2319 bool SC_iCoreAudioDriver::DriverStop()
2320 {
2321 if(mWorld->mVerbosity >= 0){
2322 scprintf("->SC_CoreAudioDriver::DriverStop\n");
2323 }
2324
2325 AUGraphStop(graph);
2326 AudioOutputUnitStop(inputUnit);
2327
2328 if(mWorld->mVerbosity >= 0){
2329 scprintf("<-SC_CoreAudioDriver::DriverStop\n");
2330 }
2331 return true;
2332 }
2333
2334 #endif // SC_AUDIO_API_COREAUDIOIPHONE
2335
2336
2337
2338
2339 // =====================================================================
2340 // Audio driver (PortAudio)
2341
2342 #if SC_AUDIO_API == SC_AUDIO_API_PORTAUDIO
2343
2344 // =====================================================================
2345 // SC_PortAudioDriver (PortAudio)
2346
2347 #define PRINT_PORTAUDIO_ERROR( function, errorcode )\
2348 scprintf( "SC_PortAudioDriver: PortAudio failed at %s with error: '%s'\n",\
2349 #function, Pa_GetErrorText( errorcode ) )
2350
2351 SC_PortAudioDriver::SC_PortAudioDriver(struct World *inWorld)
2352 : SC_AudioDriver(inWorld)
2353 , mStream(0)
2354 {
2355 PaError paerror = Pa_Initialize();
2356 if( paerror != paNoError )
2357 PRINT_PORTAUDIO_ERROR( Pa_Initialize, paerror );
2358 }
2359
2360 SC_PortAudioDriver::~SC_PortAudioDriver()
2361 {
2362 if( mStream ){
2363 PaError paerror = Pa_CloseStream( mStream );
2364 if( paerror != paNoError )
2365 PRINT_PORTAUDIO_ERROR( Pa_CloseStream, paerror );
2366 }
2367 Pa_Terminate();
2368 }
2369
2370 static int SC_PortAudioStreamCallback( const void *input, void *output,
2371 unsigned long frameCount, const PaStreamCallbackTimeInfo* timeInfo,
2372 PaStreamCallbackFlags statusFlags, void *userData )
2373 {
2374 SC_PortAudioDriver *driver = (SC_PortAudioDriver*)userData;
2375
2376 return driver->PortAudioCallback( input, output, frameCount, timeInfo, statusFlags );
2377 }
2378
2379 int SC_PortAudioDriver::PortAudioCallback( const void *input, void *output,
2380 unsigned long frameCount, const PaStreamCallbackTimeInfo* timeInfo,
2381 PaStreamCallbackFlags statusFlags )
2382 {
2383 World *world = mWorld;
2384 (void) frameCount, timeInfo, statusFlags; // suppress unused parameter warnings
2385
2386 try {
2387 // synchronise against the output buffer - timeInfo->currentTime is 0.0 bug in PA?
2388 if (mPaStreamStartupTime==0 && mPaStreamStartupTimeOSC==0) {
2389 mPaStreamStartupTimeOSC = GetCurrentOSCTime();
2390 mPaStreamStartupTime = timeInfo->outputBufferDacTime;
2391 }
2392 mOSCbuftime = PaStreamTimeToOSC(timeInfo->outputBufferDacTime - mPaStreamStartupTime) + mPaStreamStartupTimeOSC;
2393
2394 mFromEngine.Free();
2395 mToEngine.Perform();
2396 mOscPacketsToEngine.Perform();
2397
2398 int numInputs = mInputChannelCount;
2399 int numOutputs = mOutputChannelCount;
2400 const float **inBuffers = (const float**)input;
2401 float **outBuffers = (float**)output;
2402
2403 int numSamples = NumSamplesPerCallback();
2404 int bufFrames = mWorld->mBufLength;
2405 int numBufs = numSamples / bufFrames;
2406
2407 float *inBuses = mWorld->mAudioBus + mWorld->mNumOutputs * bufFrames;
2408 float *outBuses = mWorld->mAudioBus;
2409 int32 *inTouched = mWorld->mAudioBusTouched + mWorld->mNumOutputs;
2410 int32 *outTouched = mWorld->mAudioBusTouched;
2411
2412 int minInputs = std::min<size_t>(numInputs, mWorld->mNumInputs);
2413 int minOutputs = std::min<size_t>(numOutputs, mWorld->mNumOutputs);
2414
2415 int bufFramePos = 0;
2416
2417 int64 oscTime = mOSCbuftime;
2418 int64 oscInc = mOSCincrement;
2419 double oscToSamples = mOSCtoSamples;
2420
2421 // main loop
2422 for (int i = 0; i < numBufs; ++i, mWorld->mBufCounter++, bufFramePos += bufFrames)
2423 {
2424 int32 bufCounter = mWorld->mBufCounter;
2425 int32 *tch;
2426
2427 // copy+touch inputs
2428 tch = inTouched;
2429 for (int k = 0; k < minInputs; ++k)
2430 {
2431 const float *src = inBuffers[k] + bufFramePos;
2432 float *dst = inBuses + k * bufFrames;
2433 for (int n = 0; n < bufFrames; ++n) *dst++ = *src++;
2434 *tch++ = bufCounter;
2435 }
2436
2437 // run engine
2438 int64 schedTime;
2439 int64 nextTime = oscTime + oscInc;
2440 // DEBUG
2441 /*
2442 if (mScheduler.Ready(nextTime)) {
2443 double diff = (mScheduler.NextTime() - mOSCbuftime)*kOSCtoSecs;
2444 scprintf("rdy %.6f %.6f %.6f %.6f \n", (mScheduler.NextTime()-gStartupOSCTime) * kOSCtoSecs, (mOSCbuftime-gStartupOSCTime)*kOSCtoSecs, diff, (nextTime-gStartupOSCTime)*kOSCtoSecs);
2445 }
2446 */
2447 while ((schedTime = mScheduler.NextTime()) <= nextTime) {
2448 float diffTime = (float)(schedTime - oscTime) * oscToSamples + 0.5;
2449 float diffTimeFloor = floor(diffTime);
2450 world->mSampleOffset = (int)diffTimeFloor;
2451 world->mSubsampleOffset = diffTime - diffTimeFloor;
2452
2453 if (world->mSampleOffset < 0) world->mSampleOffset = 0;
2454 else if (world->mSampleOffset >= world->mBufLength) world->mSampleOffset = world->mBufLength-1;
2455
2456 SC_ScheduledEvent event = mScheduler.Remove();
2457 event.Perform();
2458 }
2459 world->mSampleOffset = 0;
2460 world->mSubsampleOffset = 0.f;
2461
2462 World_Run(world);
2463
2464 // copy touched outputs
2465 tch = outTouched;
2466 for (int k = 0; k < minOutputs; ++k) {
2467 float *dst = outBuffers[k] + bufFramePos;
2468 if (*tch++ == bufCounter) {
2469 float *src = outBuses + k * bufFrames;
2470 for (int n = 0; n < bufFrames; ++n) *dst++ = *src++;
2471 } else {
2472 for (int n = 0; n < bufFrames; ++n) *dst++ = 0.0f;
2473 }
2474 }
2475
2476 // update buffer time
2477 oscTime = mOSCbuftime = nextTime;
2478 }
2479 } catch (std::exception& exc) {
2480 scprintf("SC_PortAudioDriver: exception in real time: %s\n", exc.what());
2481 } catch (...) {
2482 scprintf("SC_PortAudioDriver: unknown exception in real time\n");
2483 }
2484
2485 double cpuUsage = (double)Pa_GetStreamCpuLoad(mStream);
2486 mAvgCPU = mAvgCPU + 0.1 * (cpuUsage - mAvgCPU);
2487 if (cpuUsage > mPeakCPU || --mPeakCounter <= 0)
2488 {
2489 mPeakCPU = cpuUsage;
2490 mPeakCounter = mMaxPeakCounter;
2491 }
2492
2493 mAudioSync.Signal();
2494
2495 return paContinue;
2496 }
2497
2498 void SC_PortAudioDriver::GetPaDeviceFromName(const char* device, int* mInOut) {
2499
2500 const PaDeviceInfo *pdi;
2501 const PaHostApiInfo *apiInfo;
2502 char devString[256];
2503 PaDeviceIndex numDevices = Pa_GetDeviceCount();
2504 mInOut[0] = paNoDevice;
2505 mInOut[1] = paNoDevice;
2506
2507 // This tries to find one or two devices that match the given name (substring)
2508 // might cause problems for some names...
2509 for( int i=0; i<numDevices; i++ ) {
2510 pdi = Pa_GetDeviceInfo( i );
2511 apiInfo = Pa_GetHostApiInfo(pdi->hostApi);
2512 strcpy(devString, apiInfo->name);
2513 strcat(devString, " : ");
2514 strcat(devString, pdi->name);
2515 if (strstr(devString, device)) {
2516 if (pdi->maxInputChannels > 0) mInOut[0] = i;
2517 if (pdi->maxOutputChannels > 0) mInOut[1] = i;
2518 }
2519 }
2520 }
2521
2522 // ====================================================================
2523 //
2524 //
2525 bool SC_PortAudioDriver::DriverSetup(int* outNumSamples, double* outSampleRate)
2526 {
2527 int mDeviceInOut[2];
2528 PaError paerror;
2529 const PaDeviceInfo *pdi;
2530 const PaHostApiInfo *apiInfo;
2531 const PaStreamInfo *psi;
2532 PaTime suggestedLatencyIn, suggestedLatencyOut;
2533 PaDeviceIndex numDevices = Pa_GetDeviceCount();
2534
2535 // print out all options:
2536 fprintf(stdout, "\nDevice options:\n");
2537 for( int i=0; i<numDevices; i++ ) {
2538 pdi = Pa_GetDeviceInfo( i );
2539 apiInfo = Pa_GetHostApiInfo(pdi->hostApi);
2540 fprintf(stdout, " - %s : %s (device #%d with %d ins %d outs)\n",apiInfo->name,pdi->name, i, pdi->maxInputChannels, pdi->maxOutputChannels);
2541 }
2542
2543 mDeviceInOut[0] = paNoDevice;
2544 mDeviceInOut[1] = paNoDevice;
2545 if (mWorld->hw->mInDeviceName)
2546 GetPaDeviceFromName(mWorld->hw->mInDeviceName, mDeviceInOut);
2547 if (mDeviceInOut[0] == paNoDevice) mDeviceInOut[0] = Pa_GetDefaultInputDevice();
2548 if (mDeviceInOut[1] == paNoDevice) mDeviceInOut[1] = Pa_GetDefaultOutputDevice();
2549
2550 *outNumSamples = mWorld->mBufLength;
2551 if (mPreferredSampleRate)
2552 *outSampleRate = mPreferredSampleRate;
2553 else
2554 *outSampleRate = 44100.;
2555
2556
2557 if (mDeviceInOut[0]!=paNoDevice && mDeviceInOut[1]!=paNoDevice) {
2558
2559 if (mPreferredHardwareBufferFrameSize)
2560 // controls the suggested latency by hardwareBufferSize switch -Z
2561 suggestedLatencyIn = suggestedLatencyOut = mPreferredHardwareBufferFrameSize / (*outSampleRate);
2562 else {
2563 suggestedLatencyIn = Pa_GetDeviceInfo( mDeviceInOut[0] )->defaultLowInputLatency;
2564 suggestedLatencyOut = Pa_GetDeviceInfo( mDeviceInOut[1] )->defaultLowOutputLatency;
2565 }
2566
2567 PaSampleFormat fmt = paFloat32 | paNonInterleaved;
2568 mInputChannelCount = Pa_GetDeviceInfo( mDeviceInOut[0] )->maxInputChannels;
2569 mOutputChannelCount = Pa_GetDeviceInfo( mDeviceInOut[1] )->maxOutputChannels;
2570 fprintf(stdout, "\nBooting with:\n In: %s : %s \n",
2571 Pa_GetHostApiInfo(Pa_GetDeviceInfo( mDeviceInOut[0] )->hostApi)->name,
2572 Pa_GetDeviceInfo( mDeviceInOut[0] )->name);
2573 fprintf(stdout, " Out: %s : %s \n",
2574 Pa_GetHostApiInfo(Pa_GetDeviceInfo( mDeviceInOut[1] )->hostApi)->name,
2575 Pa_GetDeviceInfo( mDeviceInOut[1] )->name);
2576
2577 PaStreamParameters inStreamParams;
2578 inStreamParams.device = mDeviceInOut[0];
2579 inStreamParams.channelCount = mInputChannelCount;
2580 inStreamParams.sampleFormat = fmt;
2581 inStreamParams.suggestedLatency = suggestedLatencyIn;
2582 inStreamParams.hostApiSpecificStreamInfo = NULL;
2583
2584 PaStreamParameters outStreamParams;
2585 outStreamParams.device = mDeviceInOut[1];
2586 outStreamParams.channelCount = mOutputChannelCount;
2587 outStreamParams.sampleFormat = fmt;
2588 outStreamParams.suggestedLatency = suggestedLatencyOut;
2589 outStreamParams.hostApiSpecificStreamInfo = NULL;
2590
2591 paerror = Pa_OpenStream(&mStream, &inStreamParams, &outStreamParams, *outSampleRate, *outNumSamples, paNoFlag, SC_PortAudioStreamCallback, this );
2592 if( paerror != paNoError )
2593 PRINT_PORTAUDIO_ERROR( Pa_OpenStream, paerror );
2594 else {
2595 psi = Pa_GetStreamInfo(mStream);
2596 if (!psi)
2597 fprintf(stdout," Could not obtain further info from portaudio stream\n");
2598 else {
2599 fprintf(stdout," Sample rate: %.3f\n", psi->sampleRate);
2600 fprintf(stdout," Latency (in/out): %.3f / %.3f sec\n", psi->inputLatency, psi->outputLatency);
2601 }
2602 }
2603 return paerror == paNoError;
2604 }
2605
2606 // should not be necessary, but a last try with OpenDefaultStream...
2607 paerror = Pa_OpenDefaultStream( &mStream, 2, 2,
2608 paFloat32 | paNonInterleaved, *outSampleRate, *outNumSamples, SC_PortAudioStreamCallback, this );
2609 if( paerror != paNoError )
2610 PRINT_PORTAUDIO_ERROR( Pa_OpenDefaultStream, paerror );
2611 return paerror == paNoError;
2612 }
2613
2614 bool SC_PortAudioDriver::DriverStart()
2615 {
2616 if (!mStream)
2617 return false;
2618
2619 PaError paerror = Pa_StartStream( mStream );
2620 if( paerror != paNoError )
2621 PRINT_PORTAUDIO_ERROR( Pa_StartStream, paerror );
2622
2623 // sync times
2624 mPaStreamStartupTimeOSC = 0;
2625 mPaStreamStartupTime = 0;
2626 // it would be better to do the sync here, but the timeInfo in the callback is incomplete
2627 //mPaStreamStartupTimeOSC = GetCurrentOSCTime();
2628 //mPaStreamStartupTime = Pa_GetStreamTime(mStream);
2629
2630 return paerror == paNoError;
2631 }
2632
2633 bool SC_PortAudioDriver::DriverStop()
2634 {
2635 if (!mStream)
2636 return false;
2637
2638 PaError paerror = Pa_StopStream(mStream);
2639 if( paerror != paNoError )
2640 PRINT_PORTAUDIO_ERROR( Pa_StopStream, paerror );
2641
2642 return paerror == paNoError;
2643 }
2644
2645 #endif // SC_AUDIO_API_PORTAUDIO
2646
2647
2648 #if SC_AUDIO_API == SC_AUDIO_API_INNERSC_VST
2649
2650 // =====================================================================
2651 // SC_VSTAudioDriver (VST)
2652
2653
2654 SC_VSTAudioDriver::SC_VSTAudioDriver(struct World *inWorld)
2655 : SC_AudioDriver(inWorld)
2656 {
2657 mIsStreaming = false;
2658 // init big rsrc
2659 }
2660
2661 SC_VSTAudioDriver::~SC_VSTAudioDriver()
2662 {
2663 // close small rsrc (stream)
2664 // close big rsrc
2665 }
2666
2667 void SC_VSTAudioDriver::Callback( const void *input, void *output,
2668 unsigned long frameCount, const VstTimeInfo* timeInfo )
2669 {
2670 World *world = mWorld;
2671
2672 // (void) frameCount, timeInfo, statusFlags; // suppress unused parameter warnings
2673
2674 try {
2675 int64 oscTime = 0; // $$$todo FIXME -> PortAudioTimeToHostTime( mStream, timeInfo.outputBufferDacTime );
2676 mOSCbuftime = oscTime;
2677
2678 mFromEngine.Free();
2679 mToEngine.Perform();
2680 mOscPacketsToEngine.Perform();
2681
2682 int numInputs = mInputChannelCount;
2683 int numOutputs = mOutputChannelCount;
2684 const float **inBuffers = (const float**)input;
2685 float **outBuffers = (float**)output;
2686
2687 int numSamples = NumSamplesPerCallback();
2688 int bufFrames = mWorld->mBufLength;
2689 int numBufs = numSamples / bufFrames;
2690
2691 float *inBuses = mWorld->mAudioBus + mWorld->mNumOutputs * bufFrames;
2692 float *outBuses = mWorld->mAudioBus;
2693 int32 *inTouched = mWorld->mAudioBusTouched + mWorld->mNumOutputs;
2694 int32 *outTouched = mWorld->mAudioBusTouched;
2695
2696 int minInputs = std::min<size_t>(numInputs, mWorld->mNumInputs);
2697 int minOutputs = std::min<size_t>(numOutputs, mWorld->mNumOutputs);
2698
2699 int bufFramePos = 0;
2700
2701 int64 oscInc = mOSCincrement;
2702 double oscToSamples = mOSCtoSamples;
2703
2704 // main loop
2705 for (int i = 0; i < numBufs; ++i, mWorld->mBufCounter++, bufFramePos += bufFrames) {
2706 int32 bufCounter = mWorld->mBufCounter;
2707 int32 *tch;
2708 // copy+touch inputs
2709 tch = inTouched;
2710 for (int k = 0; k < minInputs; ++k) {
2711 const float *src = inBuffers[k] + bufFramePos;
2712 float *dst = inBuses + k * bufFrames;
2713 for (int n = 0; n < bufFrames; ++n)
2714 *dst++ = *src++;
2715 *tch++ = bufCounter;
2716 }
2717 // run engine
2718 //int64 schedTime;
2719 //int64 nextTime = oscTime + oscInc;
2720 //while ((schedTime = mScheduler.NextTime()) <= nextTime) {
2721 // world->mSampleOffset = (int)((double)(schedTime - oscTime) * oscToSamples);
2722 // SC_ScheduledEvent event = mScheduler.Remove();
2723 // event.Perform();
2724 // world->mSampleOffset = 0;
2725 //}
2726 // hack for now, schedule events as soon as they arrive
2727
2728 int64 schedTime;
2729 int64 nextTime = oscTime + oscInc;
2730 while ((schedTime = mScheduler.NextTime()) != kMaxInt64) {
2731 world->mSampleOffset = 0;
2732 SC_ScheduledEvent event = mScheduler.Remove();
2733 event.Perform();
2734 world->mSampleOffset = 0;
2735 }
2736 World_Run(world);
2737 // copy touched outputs
2738 tch = outTouched;
2739 for (int k = 0; k < minOutputs; ++k) {
2740 float *dst = outBuffers[k] + bufFramePos;
2741 if (*tch++ == bufCounter) {
2742 float *src = outBuses + k * bufFrames;
2743 for (int n = 0; n < bufFrames; ++n)
2744 *dst++ = *src++;
2745 }
2746 else {
2747 for (int n = 0; n < bufFrames; ++n)
2748 *dst++ = 0.0f;
2749 }
2750 }
2751 // update buffer time
2752 mOSCbuftime = nextTime;
2753 }
2754 } catch (std::exception& exc) {
2755 scprintf("SC_PortAudioDriver: exception in real time: %s\n", exc.what());
2756 } catch (...) {
2757 scprintf("SC_PortAudioDriver: unknown exception in real time\n");
2758 }
2759
2760 //double cpuUsage = (double)Pa_GetStreamCpuLoad(mStream);
2761 double cpuUsage = 0.0; // $$$todo fix fix. user will check load in host
2762 mAvgCPU = mAvgCPU + 0.1 * (cpuUsage - mAvgCPU);
2763 if (cpuUsage > mPeakCPU || --mPeakCounter <= 0)
2764 {
2765 mPeakCPU = cpuUsage;
2766 mPeakCounter = mMaxPeakCounter;
2767 }
2768 mAudioSync.Signal();
2769 //return paContinue;
2770 }
2771
2772
2773 // ====================================================================
2774 // NOTE: for now, in lieu of a mechanism that passes generic options to
2775 // the platform driver, we rely on the PortAudio default device environment variables
2776 bool SC_VSTAudioDriver::DriverSetup(int* outNumSamples, double* outSampleRate)
2777 {
2778 // should init the driver and write the num of samples per callback
2779 // and the sample rate in the supplied addresses
2780
2781 // this should open the resources (and return true if successful), but not
2782 // really start the streaming... (this is the resp of DriverStart())
2783 return true;
2784 }
2785
2786 bool SC_VSTAudioDriver::DriverStart()
2787 {
2788 return true;
2789 }
2790
2791 bool SC_VSTAudioDriver::DriverStop()
2792 {
2793 mIsStreaming = false;
2794 return true;
2795 }
2796
2797 int32 server_timeseed()
2798 {
2799 static int32 count = 0;
2800 struct timeval tv;
2801 double us = timeGetTime( )*1000;
2802 int sec = us/1000000;
2803 int usec = us-sec*1000000;
2804 return (int32)sec ^ (int32)usec ^ count--;
2805 }
2806
2807 static inline int64 GetCurrentOSCTime()
2808 {
2809 #pragma message("check where GetCurrentOSCTime( ) is called and try to defer that somewhere where VstTimeInfo is available")
2810 //$$$todo fixme
2811 return 0;
2812 }
2813
2814
2815 int64 oscTimeNow()
2816 {
2817 return GetCurrentOSCTime();
2818 }
2819
2820 void initializeScheduler()
2821 {
2822 }
2823
2824 #endif // SC_AUDIO_API_INNERSC_VST