libcm is a C development framework with an emphasis on audio signal processing applications.
選択できるのは25トピックまでです。 トピックは、先頭が英数字で、英数字とダッシュ('-')を使用した35文字以内のものにしてください。

cmAudioPort.c 23KB

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  1. #include "cmPrefix.h"
  2. #include "cmGlobal.h"
  3. #include "cmRpt.h"
  4. #include "cmErr.h"
  5. #include "cmCtx.h"
  6. #include "cmMem.h"
  7. #include "cmMallocDebug.h"
  8. #include "cmAudioPort.h"
  9. #include "cmApBuf.h" // only needed for cmApBufTest().
  10. #include "cmAudioPortFile.h"
  11. #include "cmAudioAggDev.h"
  12. #include "cmAudioNrtDev.h"
  13. #ifdef OS_LINUX
  14. #include "linux/cmAudioPortAlsa.h"
  15. #endif
  16. #ifdef OS_OSX
  17. #include "osx/cmAudioPortOsx.h"
  18. #endif
  19. typedef struct
  20. {
  21. unsigned begDevIdx;
  22. unsigned endDevIdx;
  23. cmApRC_t (*initialize)( cmRpt_t* rpt, unsigned baseApDevIdx );
  24. cmApRC_t (*finalize)();
  25. cmApRC_t (*deviceCount)();
  26. const char* (*deviceLabel)( unsigned devIdx );
  27. unsigned (*deviceChannelCount)( unsigned devIdx, bool inputFl );
  28. double (*deviceSampleRate)( unsigned devIdx );
  29. unsigned (*deviceFramesPerCycle)( unsigned devIdx, bool inputFl );
  30. cmApRC_t (*deviceSetup)( unsigned devIdx, double sr, unsigned frmPerCycle, cmApCallbackPtr_t cb, void* cbData );
  31. cmApRC_t (*deviceStart)( unsigned devIdx );
  32. cmApRC_t (*deviceStop)( unsigned devIdx );
  33. bool (*deviceIsStarted)( unsigned devIdx );
  34. } cmApDriver_t;
  35. typedef struct
  36. {
  37. cmErr_t err;
  38. cmApDriver_t* drvArray;
  39. unsigned drvCnt;
  40. unsigned devCnt;
  41. } cmAp_t;
  42. cmAp_t* _ap = NULL;
  43. cmApRC_t _cmApIndexToDev( unsigned devIdx, cmApDriver_t** drvPtrPtr, unsigned* devIdxPtr )
  44. {
  45. unsigned i;
  46. for(i=0; i<_ap->drvCnt; ++i)
  47. if( _ap->drvArray[i].begDevIdx != cmInvalidIdx )
  48. if( (_ap->drvArray[i].begDevIdx <= devIdx) && (devIdx <= _ap->drvArray[i].endDevIdx) )
  49. {
  50. *drvPtrPtr = _ap->drvArray + i;
  51. *devIdxPtr = devIdx - _ap->drvArray[i].begDevIdx;
  52. return kOkApRC;
  53. }
  54. return cmErrMsg(&_ap->err,kInvalidDevIdApRC,"The audio port device index %i is not valid.",devIdx);
  55. }
  56. cmApRC_t cmApInitialize( cmRpt_t* rpt )
  57. {
  58. cmApRC_t rc = kOkApRC;
  59. if((rc = cmApFinalize()) != kOkApRC )
  60. return rc;
  61. _ap = cmMemAllocZ(cmAp_t,1);
  62. cmErrSetup(&_ap->err,rpt,"Audio Port Driver");
  63. _ap->drvCnt = 4;
  64. _ap->drvArray = cmMemAllocZ(cmApDriver_t,_ap->drvCnt);
  65. cmApDriver_t* dp = _ap->drvArray;
  66. #ifdef OS_OSX
  67. dp->initialize = cmApOsxInitialize;
  68. dp->finalize = cmApOsxFinalize;
  69. dp->deviceCount = cmApOsxDeviceCount;
  70. dp->deviceLabel = cmApOsxDeviceLabel;
  71. dp->deviceChannelCount = cmApOsxDeviceChannelCount;
  72. dp->deviceSampleRate = cmApOsxDeviceSampleRate;
  73. dp->deviceFramesPerCycle = cmApOsxDeviceFramesPerCycle;
  74. dp->deviceSetup = cmApOsxDeviceSetup;
  75. dp->deviceStart = cmApOsxDeviceStart;
  76. dp->deviceStop = cmApOsxDeviceStop;
  77. dp->deviceIsStarted = cmApOsxDeviceIsStarted;
  78. #endif
  79. #ifdef OS_LINUX
  80. dp->initialize = cmApAlsaInitialize;
  81. dp->finalize = cmApAlsaFinalize;
  82. dp->deviceCount = cmApAlsaDeviceCount;
  83. dp->deviceLabel = cmApAlsaDeviceLabel;
  84. dp->deviceChannelCount = cmApAlsaDeviceChannelCount;
  85. dp->deviceSampleRate = cmApAlsaDeviceSampleRate;
  86. dp->deviceFramesPerCycle = cmApAlsaDeviceFramesPerCycle;
  87. dp->deviceSetup = cmApAlsaDeviceSetup;
  88. dp->deviceStart = cmApAlsaDeviceStart;
  89. dp->deviceStop = cmApAlsaDeviceStop;
  90. dp->deviceIsStarted = cmApAlsaDeviceIsStarted;
  91. #endif
  92. dp = _ap->drvArray + 1;
  93. dp->initialize = cmApFileInitialize;
  94. dp->finalize = cmApFileFinalize;
  95. dp->deviceCount = cmApFileDeviceCount;
  96. dp->deviceLabel = cmApFileDeviceLabel;
  97. dp->deviceChannelCount = cmApFileDeviceChannelCount;
  98. dp->deviceSampleRate = cmApFileDeviceSampleRate;
  99. dp->deviceFramesPerCycle = cmApFileDeviceFramesPerCycle;
  100. dp->deviceSetup = cmApFileDeviceSetup;
  101. dp->deviceStart = cmApFileDeviceStart;
  102. dp->deviceStop = cmApFileDeviceStop;
  103. dp->deviceIsStarted = cmApFileDeviceIsStarted;
  104. dp = _ap->drvArray + 2;
  105. dp->initialize = cmApAggInitialize;
  106. dp->finalize = cmApAggFinalize;
  107. dp->deviceCount = cmApAggDeviceCount;
  108. dp->deviceLabel = cmApAggDeviceLabel;
  109. dp->deviceChannelCount = cmApAggDeviceChannelCount;
  110. dp->deviceSampleRate = cmApAggDeviceSampleRate;
  111. dp->deviceFramesPerCycle = cmApAggDeviceFramesPerCycle;
  112. dp->deviceSetup = cmApAggDeviceSetup;
  113. dp->deviceStart = cmApAggDeviceStart;
  114. dp->deviceStop = cmApAggDeviceStop;
  115. dp->deviceIsStarted = cmApAggDeviceIsStarted;
  116. dp = _ap->drvArray + 3;
  117. dp->initialize = cmApNrtInitialize;
  118. dp->finalize = cmApNrtFinalize;
  119. dp->deviceCount = cmApNrtDeviceCount;
  120. dp->deviceLabel = cmApNrtDeviceLabel;
  121. dp->deviceChannelCount = cmApNrtDeviceChannelCount;
  122. dp->deviceSampleRate = cmApNrtDeviceSampleRate;
  123. dp->deviceFramesPerCycle = cmApNrtDeviceFramesPerCycle;
  124. dp->deviceSetup = cmApNrtDeviceSetup;
  125. dp->deviceStart = cmApNrtDeviceStart;
  126. dp->deviceStop = cmApNrtDeviceStop;
  127. dp->deviceIsStarted = cmApNrtDeviceIsStarted;
  128. _ap->devCnt = 0;
  129. unsigned i;
  130. for(i=0; i<_ap->drvCnt; ++i)
  131. {
  132. unsigned dn;
  133. cmApRC_t rc0;
  134. _ap->drvArray[i].begDevIdx = cmInvalidIdx;
  135. _ap->drvArray[i].endDevIdx = cmInvalidIdx;
  136. if((rc0 = _ap->drvArray[i].initialize(rpt,_ap->devCnt)) != kOkApRC )
  137. {
  138. rc = rc0;
  139. continue;
  140. }
  141. if((dn = _ap->drvArray[i].deviceCount()) > 0)
  142. {
  143. _ap->drvArray[i].begDevIdx = _ap->devCnt;
  144. _ap->drvArray[i].endDevIdx = _ap->devCnt + dn - 1;
  145. _ap->devCnt += dn;
  146. }
  147. }
  148. if( rc != kOkApRC )
  149. cmApFinalize();
  150. return rc;
  151. }
  152. cmApRC_t cmApFinalize()
  153. {
  154. cmApRC_t rc=kOkApRC;
  155. cmApRC_t rc0 = kOkApRC;
  156. unsigned i;
  157. if( _ap == NULL )
  158. return kOkApRC;
  159. for(i=0; i<_ap->drvCnt; ++i)
  160. {
  161. if((rc0 = _ap->drvArray[i].finalize()) != kOkApRC )
  162. rc = rc0;
  163. }
  164. cmMemPtrFree(&_ap->drvArray);
  165. cmMemPtrFree(&_ap);
  166. return rc;
  167. }
  168. unsigned cmApDeviceCount()
  169. { return _ap->devCnt; }
  170. const char* cmApDeviceLabel( unsigned devIdx )
  171. {
  172. cmApDriver_t* dp;
  173. unsigned di;
  174. cmApRC_t rc;
  175. if( devIdx == cmInvalidIdx )
  176. return NULL;
  177. if((rc = _cmApIndexToDev(devIdx,&dp,&di)) != kOkApRC )
  178. return cmStringNullGuard(NULL);
  179. return dp->deviceLabel(di);
  180. }
  181. unsigned cmApDeviceChannelCount( unsigned devIdx, bool inputFl )
  182. {
  183. cmApDriver_t* dp;
  184. unsigned di;
  185. cmApRC_t rc;
  186. if( devIdx == cmInvalidIdx )
  187. return 0;
  188. if((rc = _cmApIndexToDev(devIdx,&dp,&di)) != kOkApRC )
  189. return rc;
  190. return dp->deviceChannelCount(di,inputFl);
  191. }
  192. double cmApDeviceSampleRate( unsigned devIdx )
  193. {
  194. cmApDriver_t* dp;
  195. unsigned di;
  196. cmApRC_t rc;
  197. if((rc = _cmApIndexToDev(devIdx,&dp,&di)) != kOkApRC )
  198. return rc;
  199. return dp->deviceSampleRate(di);
  200. }
  201. unsigned cmApDeviceFramesPerCycle( unsigned devIdx, bool inputFl )
  202. {
  203. cmApDriver_t* dp;
  204. unsigned di;
  205. cmApRC_t rc;
  206. if( devIdx == cmInvalidIdx )
  207. return 0;
  208. if((rc = _cmApIndexToDev(devIdx,&dp,&di)) != kOkApRC )
  209. return rc;
  210. return dp->deviceFramesPerCycle(di,inputFl);
  211. }
  212. cmApRC_t cmApDeviceSetup(
  213. unsigned devIdx,
  214. double srate,
  215. unsigned framesPerCycle,
  216. cmApCallbackPtr_t callbackPtr,
  217. void* userCbPtr )
  218. {
  219. cmApDriver_t* dp;
  220. unsigned di;
  221. cmApRC_t rc;
  222. if( devIdx == cmInvalidIdx )
  223. return kOkApRC;
  224. if((rc = _cmApIndexToDev(devIdx,&dp,&di)) != kOkApRC )
  225. return rc;
  226. return dp->deviceSetup(di,srate,framesPerCycle,callbackPtr,userCbPtr);
  227. }
  228. cmApRC_t cmApDeviceStart( unsigned devIdx )
  229. {
  230. cmApDriver_t* dp;
  231. unsigned di;
  232. cmApRC_t rc;
  233. if( devIdx == cmInvalidIdx )
  234. return kOkApRC;
  235. if((rc = _cmApIndexToDev(devIdx,&dp,&di)) != kOkApRC )
  236. return rc;
  237. return dp->deviceStart(di);
  238. }
  239. cmApRC_t cmApDeviceStop( unsigned devIdx )
  240. {
  241. cmApDriver_t* dp;
  242. unsigned di;
  243. cmApRC_t rc;
  244. if( devIdx == cmInvalidIdx )
  245. return kOkApRC;
  246. if((rc = _cmApIndexToDev(devIdx,&dp,&di)) != kOkApRC )
  247. return rc;
  248. return dp->deviceStop(di);
  249. }
  250. bool cmApDeviceIsStarted( unsigned devIdx )
  251. {
  252. cmApDriver_t* dp;
  253. unsigned di;
  254. cmApRC_t rc;
  255. if( devIdx == cmInvalidIdx )
  256. return false;
  257. if((rc = _cmApIndexToDev(devIdx,&dp,&di)) != kOkApRC )
  258. return rc;
  259. return dp->deviceIsStarted(di);
  260. }
  261. void cmApReport( cmRpt_t* rpt )
  262. {
  263. unsigned i,j,k;
  264. for(j=0,k=0; j<_ap->drvCnt; ++j)
  265. {
  266. cmApDriver_t* drvPtr = _ap->drvArray + j;
  267. unsigned n = drvPtr->deviceCount();
  268. for(i=0; i<n; ++i,++k)
  269. {
  270. cmRptPrintf(rpt, "%i %f in:%i (%i) out:%i (%i) %s\n",
  271. k, drvPtr->deviceSampleRate(i),
  272. drvPtr->deviceChannelCount(i,true), drvPtr->deviceFramesPerCycle(i,true),
  273. drvPtr->deviceChannelCount(i,false), drvPtr->deviceFramesPerCycle(i,false),
  274. drvPtr->deviceLabel(i));
  275. }
  276. }
  277. }
  278. /// [cmAudioPortExample]
  279. // See cmApPortTest() below for the main point of entry.
  280. // Data structure used to hold the parameters for cpApPortTest()
  281. // and the user defined data record passed to the host from the
  282. // audio port callback functions.
  283. typedef struct
  284. {
  285. unsigned bufCnt; // 2=double buffering 3=triple buffering
  286. unsigned chIdx; // first test channel
  287. unsigned chCnt; // count of channels to test
  288. unsigned framesPerCycle; // DSP frames per cycle
  289. unsigned bufFrmCnt; // count of DSP frames used by the audio buffer (bufCnt * framesPerCycle)
  290. unsigned bufSmpCnt; // count of samples used by the audio buffer (chCnt * bufFrmCnt)
  291. unsigned inDevIdx; // input device index
  292. unsigned outDevIdx; // output device index
  293. double srate; // audio sample rate
  294. unsigned meterMs; // audio meter buffer length
  295. // param's and state for cmApSynthSine()
  296. unsigned phase; // sine synth phase
  297. double frqHz; // sine synth frequency in Hz
  298. // buffer and state for cmApCopyIn/Out()
  299. cmApSample_t* buf; // buf[bufSmpCnt] - circular interleaved audio buffer
  300. unsigned bufInIdx; // next input buffer index
  301. unsigned bufOutIdx; // next output buffer index
  302. unsigned bufFullCnt; // count of full samples
  303. // debugging log data arrays
  304. unsigned logCnt; // count of elements in log[] and ilong[]
  305. char* log; // log[logCnt]
  306. unsigned* ilog; // ilog[logCnt]
  307. unsigned logIdx; // current log index
  308. unsigned cbCnt; // count the callback
  309. } cmApPortTestRecd;
  310. #ifdef NOT_DEF
  311. // The application can request any block of channels from the device. The packets are provided with the starting
  312. // device channel and channel count. This function converts device channels and channel counts to buffer
  313. // channel indexes and counts.
  314. //
  315. // Example:
  316. // input output
  317. // i,n i n
  318. // App: 0,4 0 1 2 3 -> 2 2
  319. // Pkt 2,8 2 3 4 5 6 7 8 -> 0 2
  320. //
  321. // The return value is the count of application requested channels located in this packet.
  322. //
  323. // input: *appChIdxPtr and appChCnt describe a block of device channels requested by the application.
  324. // *pktChIdxPtr and pktChCnt describe a block of device channels provided to the application
  325. //
  326. // output:*appChIdxPtr and <return value> describe a block of app buffer channels which will send/recv samples.
  327. // *pktChIdxPtr and <return value> describe a block of pkt buffer channels which will send/recv samples
  328. //
  329. unsigned _cmApDeviceToBuffer( unsigned* appChIdxPtr, unsigned appChCnt, unsigned* pktChIdxPtr, unsigned pktChCnt )
  330. {
  331. unsigned abi = *appChIdxPtr;
  332. unsigned aei = abi+appChCnt-1;
  333. unsigned pbi = *pktChIdxPtr;
  334. unsigned pei = pbi+pktChCnt-1;
  335. // if the ch's rqstd by the app do not overlap with this packet - return false.
  336. if( aei < pbi || abi > pei )
  337. return 0;
  338. // if the ch's rqstd by the app overlap with the beginning of the pkt channel block
  339. if( abi < pbi )
  340. {
  341. appChCnt -= pbi - abi;
  342. *appChIdxPtr = pbi - abi;
  343. *pktChIdxPtr = 0;
  344. }
  345. else
  346. {
  347. // the rqstd ch's begin inside the pkt channel block
  348. pktChCnt -= abi - pbi;
  349. *pktChIdxPtr = abi - pbi;
  350. *appChIdxPtr = 0;
  351. }
  352. // if the pkt channels extend beyond the rqstd ch block
  353. if( aei < pei )
  354. pktChCnt -= pei - aei;
  355. else
  356. appChCnt -= aei - pei; // the rqstd ch's extend beyond or coincide with the pkt block
  357. // the returned channel count must always be the same for both the rqstd and pkt
  358. return cmMin(appChCnt,pktChCnt);
  359. }
  360. // synthesize a sine signal into an interleaved audio buffer
  361. unsigned _cmApSynthSine( cmApPortTestRecd* r, float* p, unsigned chIdx, unsigned chCnt, unsigned frmCnt, unsigned phs, double hz )
  362. {
  363. long ph = 0;
  364. unsigned i;
  365. unsigned bufIdx = r->chIdx;
  366. unsigned bufChCnt;
  367. if( (bufChCnt = _cmApDeviceToBuffer( &bufIdx, r->chCnt, &chIdx, chCnt )) == 0)
  368. return phs;
  369. //if( r->cbCnt < 50 )
  370. // printf("ch:%i cnt:%i ch:%i cnt:%i bi:%i bcn:%i\n",r->chIdx,r->chCnt,chIdx,chCnt,bufIdx,bufChCnt);
  371. for(i=bufIdx; i<bufIdx+bufChCnt; ++i)
  372. {
  373. unsigned j;
  374. float* op = p + i;
  375. ph = phs;
  376. for(j=0; j<frmCnt; j++, op+=chCnt, ph++)
  377. {
  378. *op = (float)(0.9 * sin( 2.0 * M_PI * hz * ph / r->srate ));
  379. }
  380. }
  381. return ph;
  382. }
  383. // Copy the audio samples in the interleaved audio buffer sp[srcChCnt*srcFrameCnt]
  384. // to the internal record buffer.
  385. void _cmApCopyIn( cmApPortTestRecd* r, const cmApSample_t* sp, unsigned srcChIdx, unsigned srcChCnt, unsigned srcFrameCnt )
  386. {
  387. unsigned i,j;
  388. unsigned chCnt = cmMin(r->chCnt,srcChCnt);
  389. for(i=0; i<srcFrameCnt; ++i)
  390. {
  391. for(j=0; j<chCnt; ++j)
  392. r->buf[ r->bufInIdx + j ] = sp[ (i*srcChCnt) + j ];
  393. for(; j<r->chCnt; ++j)
  394. r->buf[ r->bufInIdx + j ] = 0;
  395. r->bufInIdx = (r->bufInIdx+r->chCnt) % r->bufFrmCnt;
  396. }
  397. //r->bufFullCnt = (r->bufFullCnt + srcFrameCnt) % r->bufFrmCnt;
  398. r->bufFullCnt += srcFrameCnt;
  399. }
  400. // Copy audio samples out of the internal record buffer into dp[dstChCnt*dstFrameCnt].
  401. void _cmApCopyOut( cmApPortTestRecd* r, cmApSample_t* dp, unsigned dstChIdx, unsigned dstChCnt, unsigned dstFrameCnt )
  402. {
  403. // if there are not enough samples available to fill the destination buffer then zero the dst buf.
  404. if( r->bufFullCnt < dstFrameCnt )
  405. {
  406. printf("Empty Output Buffer\n");
  407. memset( dp, 0, dstFrameCnt*dstChCnt*sizeof(cmApSample_t) );
  408. }
  409. else
  410. {
  411. unsigned i,j;
  412. unsigned chCnt = cmMin(dstChCnt, r->chCnt);
  413. // for each output frame
  414. for(i=0; i<dstFrameCnt; ++i)
  415. {
  416. // copy the first chCnt samples from the internal buf to the output buf
  417. for(j=0; j<chCnt; ++j)
  418. dp[ (i*dstChCnt) + j ] = r->buf[ r->bufOutIdx + j ];
  419. // zero any output ch's for which there is no internal buf channel
  420. for(; j<dstChCnt; ++j)
  421. dp[ (i*dstChCnt) + j ] = 0;
  422. // advance the internal buffer
  423. r->bufOutIdx = (r->bufOutIdx + r->chCnt) % r->bufFrmCnt;
  424. }
  425. r->bufFullCnt -= dstFrameCnt;
  426. }
  427. }
  428. // Audio port callback function called from the audio device thread.
  429. void _cmApPortCb( cmApAudioPacket_t* inPktArray, unsigned inPktCnt, cmApAudioPacket_t* outPktArray, unsigned outPktCnt )
  430. {
  431. unsigned i;
  432. // for each incoming audio packet
  433. for(i=0; i<inPktCnt; ++i)
  434. {
  435. cmApPortTestRecd* r = (cmApPortTestRecd*)inPktArray[i].userCbPtr;
  436. if( inPktArray[i].devIdx == r->inDevIdx )
  437. {
  438. // copy the incoming audio into an internal buffer where it can be picked up by _cpApCopyOut().
  439. _cmApCopyIn( r, (cmApSample_t*)inPktArray[i].audioBytesPtr, inPktArray[i].begChIdx, inPktArray[i].chCnt, inPktArray[i].audioFramesCnt );
  440. }
  441. ++r->cbCnt;
  442. //printf("i %4i in:%4i out:%4i\n",r->bufFullCnt,r->bufInIdx,r->bufOutIdx);
  443. }
  444. unsigned hold_phase = 0;
  445. // for each outgoing audio packet
  446. for(i=0; i<outPktCnt; ++i)
  447. {
  448. cmApPortTestRecd* r = (cmApPortTestRecd*)outPktArray[i].userCbPtr;
  449. if( outPktArray[i].devIdx == r->outDevIdx )
  450. {
  451. // zero the output buffer
  452. memset(outPktArray[i].audioBytesPtr,0,outPktArray[i].chCnt * outPktArray[i].audioFramesCnt * sizeof(cmApSample_t) );
  453. // if the synth is enabled
  454. if( r->synthFl )
  455. {
  456. unsigned tmp_phase = _cmApSynthSine( r, outPktArray[i].audioBytesPtr, outPktArray[i].begChIdx, outPktArray[i].chCnt, outPktArray[i].audioFramesCnt, r->phase, r->frqHz );
  457. // the phase will only change on packets that are actually used
  458. if( tmp_phase != r->phase )
  459. hold_phase = tmp_phase;
  460. }
  461. else
  462. {
  463. // copy the any audio in the internal record buffer to the playback device
  464. _cmApCopyOut( r, (cmApSample_t*)outPktArray[i].audioBytesPtr, outPktArray[i].begChIdx, outPktArray[i].chCnt, outPktArray[i].audioFramesCnt );
  465. }
  466. }
  467. r->phase = hold_phase;
  468. //printf("o %4i in:%4i out:%4i\n",r->bufFullCnt,r->bufInIdx,r->bufOutIdx);
  469. // count callbacks
  470. ++r->cbCnt;
  471. }
  472. }
  473. #endif
  474. // print the usage message for cmAudioPortTest.c
  475. void _cmApPrintUsage( cmRpt_t* rpt )
  476. {
  477. char msg[] =
  478. "cmApPortTest() command switches\n"
  479. "-r <srate> -c <chcnt> -b <bufcnt> -f <frmcnt> -i <idevidx> -o <odevidx> -t -p -h \n"
  480. "\n"
  481. "-r <srate> = sample rate\n"
  482. "-a <chidx> = first channel\n"
  483. "-c <chcnt> = audio channels\n"
  484. "-b <bufcnt> = count of buffers\n"
  485. "-f <frmcnt> = count of samples per buffer\n"
  486. "-i <idevidx> = input device index\n"
  487. "-o <odevidx> = output device index\n"
  488. "-p = print report but do not start audio devices\n"
  489. "-h = print this usage message\n";
  490. cmRptPrintf(rpt,msg);
  491. }
  492. // Get a command line option.
  493. int _cmApGetOpt( int argc, const char* argv[], const char* label, int defaultVal, bool boolFl )
  494. {
  495. int i = 0;
  496. for(; i<argc; ++i)
  497. if( strcmp(label,argv[i]) == 0 )
  498. {
  499. if(boolFl)
  500. return 1;
  501. if( i == (argc-1) )
  502. return defaultVal;
  503. return atoi(argv[i+1]);
  504. }
  505. return defaultVal;
  506. }
  507. unsigned _cmGlobalInDevIdx = 0;
  508. unsigned _cmGlobalOutDevIdx = 0;
  509. void _cmApPortCb2( cmApAudioPacket_t* inPktArray, unsigned inPktCnt, cmApAudioPacket_t* outPktArray, unsigned outPktCnt )
  510. {
  511. cmApBufInputToOutput( _cmGlobalInDevIdx, _cmGlobalOutDevIdx );
  512. cmApBufUpdate( inPktArray, inPktCnt, outPktArray, outPktCnt );
  513. }
  514. // Audio Port testing function
  515. int cmApPortTest( bool runFl, cmRpt_t* rpt, int argc, const char* argv[] )
  516. {
  517. cmApPortTestRecd r;
  518. unsigned i;
  519. int result = 0;
  520. if( _cmApGetOpt(argc,argv,"-h",0,true) )
  521. _cmApPrintUsage(rpt);
  522. runFl = _cmApGetOpt(argc,argv,"-p",!runFl,true)?false:true;
  523. r.chIdx = _cmApGetOpt(argc,argv,"-a",0,false);
  524. r.chCnt = _cmApGetOpt(argc,argv,"-c",2,false);
  525. r.bufCnt = _cmApGetOpt(argc,argv,"-b",3,false);
  526. r.framesPerCycle = _cmApGetOpt(argc,argv,"-f",512,false);
  527. r.bufFrmCnt = (r.bufCnt*r.framesPerCycle);
  528. r.bufSmpCnt = (r.chCnt * r.bufFrmCnt);
  529. r.logCnt = 100;
  530. r.meterMs = 50;
  531. cmApSample_t buf[r.bufSmpCnt];
  532. char log[r.logCnt];
  533. unsigned ilog[r.logCnt];
  534. r.inDevIdx = _cmGlobalInDevIdx = _cmApGetOpt(argc,argv,"-i",0,false);
  535. r.outDevIdx = _cmGlobalOutDevIdx = _cmApGetOpt(argc,argv,"-o",2,false);
  536. r.phase = 0;
  537. r.frqHz = 2000;
  538. r.srate = 44100;
  539. r.bufInIdx = 0;
  540. r.bufOutIdx = 0;
  541. r.bufFullCnt = 0;
  542. r.logIdx = 0;
  543. r.buf = buf;
  544. r.log = log;
  545. r.ilog = ilog;
  546. r.cbCnt = 0;
  547. cmRptPrintf(rpt,"%s in:%i out:%i chidx:%i chs:%i bufs=%i frm=%i rate=%f\n",runFl?"exec":"rpt",r.inDevIdx,r.outDevIdx,r.chIdx,r.chCnt,r.bufCnt,r.framesPerCycle,r.srate);
  548. // allocate the non-real-time port
  549. if( cmApNrtAllocate(rpt) != kOkApRC )
  550. {
  551. cmRptPrintf(rpt,"Non-real-time system allocation failed.");
  552. result = 1;
  553. goto errLabel;
  554. }
  555. // initialize the audio device interface
  556. if( cmApInitialize(rpt) != kOkApRC )
  557. {
  558. cmRptPrintf(rpt,"Initialize failed.\n");
  559. result = 1;
  560. goto errLabel;
  561. }
  562. // report the current audio device configuration
  563. for(i=0; i<cmApDeviceCount(); ++i)
  564. {
  565. cmRptPrintf(rpt,"%i [in: chs=%i frames=%i] [out: chs=%i frames=%i] srate:%f %s\n",i,cmApDeviceChannelCount(i,true),cmApDeviceFramesPerCycle(i,true),cmApDeviceChannelCount(i,false),cmApDeviceFramesPerCycle(i,false),cmApDeviceSampleRate(i),cmApDeviceLabel(i));
  566. }
  567. // report the current audio devices using the audio port interface function
  568. cmApReport(rpt);
  569. if( runFl )
  570. {
  571. // initialize the audio bufer
  572. cmApBufInitialize( cmApDeviceCount(), r.meterMs );
  573. // setup the buffer for the output device
  574. cmApBufSetup( r.outDevIdx, r.srate, r.framesPerCycle, r.bufCnt, cmApDeviceChannelCount(r.outDevIdx,true), r.framesPerCycle, cmApDeviceChannelCount(r.outDevIdx,false), r.framesPerCycle );
  575. // setup the buffer for the input device
  576. if( r.inDevIdx != r.outDevIdx )
  577. cmApBufSetup( r.inDevIdx, r.srate, r.framesPerCycle, r.bufCnt, cmApDeviceChannelCount(r.inDevIdx,true), r.framesPerCycle, cmApDeviceChannelCount(r.inDevIdx,false), r.framesPerCycle );
  578. // setup an output device
  579. if(cmApDeviceSetup(r.outDevIdx,r.srate,r.framesPerCycle,_cmApPortCb2,&r) != kOkApRC )
  580. cmRptPrintf(rpt,"Out device setup failed.\n");
  581. else
  582. // setup an input device
  583. if( cmApDeviceSetup(r.inDevIdx,r.srate,r.framesPerCycle,_cmApPortCb2,&r) != kOkApRC )
  584. cmRptPrintf(rpt,"In device setup failed.\n");
  585. else
  586. // start the input device
  587. if( cmApDeviceStart(r.inDevIdx) != kOkApRC )
  588. cmRptPrintf(rpt,"In device start failed.\n");
  589. else
  590. // start the output device
  591. if( cmApDeviceStart(r.outDevIdx) != kOkApRC )
  592. cmRptPrintf(rpt,"Out Device start failed.\n");
  593. cmRptPrintf(rpt,"q=quit O/o output tone, I/i input tone P/p pass\n");
  594. char c;
  595. while((c=getchar()) != 'q')
  596. {
  597. //cmApAlsaDeviceRtReport(rpt,r.outDevIdx);
  598. switch(c)
  599. {
  600. case 'i':
  601. case 'I':
  602. cmApBufEnableTone(r.inDevIdx,-1,kInApFl | (c=='I'?kEnableApFl:0));
  603. break;
  604. case 'o':
  605. case 'O':
  606. cmApBufEnableTone(r.outDevIdx,-1,kOutApFl | (c=='O'?kEnableApFl:0));
  607. break;
  608. case 'p':
  609. case 'P':
  610. cmApBufEnablePass(r.outDevIdx,-1,kOutApFl | (c=='P'?kEnableApFl:0));
  611. break;
  612. case 's':
  613. cmApBufReport(rpt);
  614. break;
  615. }
  616. }
  617. // stop the input device
  618. if( cmApDeviceIsStarted(r.inDevIdx) )
  619. if( cmApDeviceStop(r.inDevIdx) != kOkApRC )
  620. cmRptPrintf(rpt,"In device stop failed.\n");
  621. // stop the output device
  622. if( cmApDeviceIsStarted(r.outDevIdx) )
  623. if( cmApDeviceStop(r.outDevIdx) != kOkApRC )
  624. cmRptPrintf(rpt,"Out device stop failed.\n");
  625. }
  626. errLabel:
  627. // release any resources held by the audio port interface
  628. if( cmApFinalize() != kOkApRC )
  629. cmRptPrintf(rpt,"Finalize failed.\n");
  630. cmApBufFinalize();
  631. cmApNrtFree();
  632. // report the count of audio buffer callbacks
  633. cmRptPrintf(rpt,"cb count:%i\n", r.cbCnt );
  634. //for(i=0; i<_logCnt; ++i)
  635. // cmRptPrintf(rpt,"%c(%i)",_log[i],_ilog[i]);
  636. //cmRptPrintf(rpt,"\n");
  637. return result;
  638. }
  639. /// [cmAudioPortExample]