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spiralsynthmodular/SpiralSound/Plugins/OutputPlugin/OutputPlugin.C

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  1. /*  SpiralSound

  2.  *  Copyleft (C) 2001 David Griffiths <dave@pawfal.org>

  3.  *

  4.  *  This program is free software; you can redistribute it and/or modify

  5.  *  it under the terms of the GNU General Public License as published by

  6.  *  the Free Software Foundation; either version 2 of the License, or

  7.  *  (at your option) any later version.

  8.  *

  9.  *  This program is distributed in the hope that it will be useful,

  10.  *  but WITHOUT ANY WARRANTY; without even the implied warranty of

  11.  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  12.  *  GNU General Public License for more details.

  13.  *

  14.  *  You should have received a copy of the GNU General Public License

  15.  *  along with this program; if not, write to the Free Software

  16.  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

  17. */ 

  18. 

  19. // for lrintf()

  20. #define	_ISOC9X_SOURCE	1

  21. #define _ISOC99_SOURCE	1

  22. #include  <math.h>

  23. 

  24. #include <sys/types.h>

  25. #include <stdio.h>

  26. #include <fcntl.h>

  27. #include <unistd.h>

  28. #include <limits.h>

  29. #if defined (__FreeBSD__)

  30. 	#include <machine/soundcard.h>

  31. #else

  32. #if defined (__NetBSD__) || defined (__OpenBSD__)

  33. 	#include <soundcard.h>            /* OSS emulation */

  34. #undef ioctl

  35. #else 	                              /* BSDI, Linux, Solaris */

  36. 	#include <sys/soundcard.h>

  37. #endif                                /* __NetBSD__ or __OpenBSD__ */

  38. #endif                                /* __FreeBSD__ */

  39. #include <sys/ioctl.h>

  40. #include <limits.h>

  41. 

  42. #include "OutputPlugin.h"

  43. #include "OutputPluginGUI.h"

  44. #include <FL/fl_file_chooser.H>

  45. #include "SpiralIcon.xpm"

  46. 

  47. static const int IN_FREQ  = 0;

  48. static const int IN_PW    = 1;

  49. static const int IN_SHLEN = 2;

  50. 

  51. static const int OUT_MAIN = 0;

  52. 

  53. static const HostInfo* host;

  54. OSSOutput* OSSOutput::m_Singleton = NULL;

  55. int OutputPlugin::m_RefCount=0;

  56. int OutputPlugin::m_NoExecuted=0;

  57. OutputPlugin::Mode OutputPlugin::m_Mode=NO_MODE;

  58. 

  59. 

  60. #define CHECK_AND_REPORT_ERROR	if (result<0)         \

  61. 								{                     \

  62. 									perror("Sound device did not accept settings"); \

  63. 									m_OutputOk=false; \

  64. 									return false;     \

  65. 								}

  66. 

  67. extern "C"

  68. {

  69. SpiralPlugin* SpiralPlugin_CreateInstance()

  70. {

  71. 	return new OutputPlugin;

  72. }

  73. 

  74. char** SpiralPlugin_GetIcon()

  75. {	

  76. 	return SpiralIcon_xpm;

  77. }

  78. 

  79. int SpiralPlugin_GetID()

  80. {

  81. 	return 0x0000;

  82. }

  83. 

  84. string SpiralPlugin_GetGroupName()

  85. {

  86. 	return "InputOutput";

  87. }

  88. }

  89. 

  90. ///////////////////////////////////////////////////////

  91. 

  92. OutputPlugin::OutputPlugin() :

  93. m_Volume(1.0f)

  94. {

  95. 	m_RefCount++;

  96. 	

  97. 	// we are an output.

  98. 	m_IsTerminal=true;

  99. 	

  100. 	m_PluginInfo.Name="OSS";

  101. 	m_PluginInfo.Width=100;

  102. 	m_PluginInfo.Height=100;

  103. 	m_PluginInfo.NumInputs=2;

  104. 	m_PluginInfo.NumOutputs=2;

  105. 	m_PluginInfo.PortTips.push_back("Left Out");

  106. 	m_PluginInfo.PortTips.push_back("Right Out");

  107. 	//m_PluginInfo.PortTips.push_back("Record Controller");

  108. 	m_PluginInfo.PortTips.push_back("Left In");

  109. 	m_PluginInfo.PortTips.push_back("Right In");

  110. 	

  111. 	m_AudioCH->Register("Volume",&m_Volume);

  112. }

  113. 

  114. OutputPlugin::~OutputPlugin()

  115. {	

  116. 	m_RefCount--;

  117. 	if (m_RefCount==0)

  118. 	{	

  119. 		cb_Blocking(m_Parent,false);

  120. 		OSSOutput::PackUpAndGoHome();

  121. 		m_Mode=NO_MODE;

  122. 	}

  123. }

  124. 

  125. PluginInfo &OutputPlugin::Initialise(const HostInfo *Host)

  126. {	

  127. 	PluginInfo& Info= SpiralPlugin::Initialise(Host);

  128. 	host=Host;

  129. 	OSSOutput::Get()->AllocateBuffer();

  130. 

  131. 	return Info;

  132. }

  133. 

  134. SpiralGUIType *OutputPlugin::CreateGUI()

  135. {

  136. 	return new OutputPluginGUI(m_PluginInfo.Width,

  137. 										  m_PluginInfo.Height,

  138. 										  this,

  139. 										  m_AudioCH,

  140. 										  m_HostInfo);

  141. }

  142. 

  143. void OutputPlugin::Execute()

  144. {

  145. 	if (m_Mode==NO_MODE && m_RefCount==1)

  146. 	{

  147. 		if (OSSOutput::Get()->OpenWrite())

  148. 		{

  149. 			cb_Blocking(m_Parent,true); 

  150. 			m_Mode=OUTPUT;

  151. 		}		

  152. 	}

  153. 	

  154. 	//if (m_Mode==NO_MODE || m_Mode==CLOSED) cb_Blocking(m_Parent,false); 

  155. 	//else cb_Blocking(m_Parent,true); 

  156. 		

  157. 	if (m_Mode==OUTPUT || m_Mode==DUPLEX)

  158. 	{

  159. 		OSSOutput::Get()->SendStereo(GetInput(0),GetInput(1));

  160. 		

  161. 		// can't open GUI stuff here

  162. 	/*	for (int n=0; n<m_HostInfo->BUFSIZE;n++)

  163. 		{

  164. 			// can't open GUI stuff here

  165. 			if (GetInput(2,n)!=0)

  166. 			{

  167. 				if (! m_CheckedAlready)

  168. 				{

  169. 				m_CheckedAlready=true;

  170. //				an experimental line, should *theoretically* cut down on CPU time.

  171. 				n=m_HostInfo->BUFSIZE;

  172. 					if (! m_Recmode)

  173. 					{

  174. 						char *fn=fl_file_chooser("Pick a Wav file to save to", "*.wav", NULL);	

  175. 						if (fn && fn!="")

  176. 						{

  177. 							OSSOutput::Get()->WavOpen(fn);

  178. 						}

  179. 						m_Recmode=true;

  180. 					}

  181. 					else 

  182. 					{

  183. 						OSSOutput::Get()->WavClose();

  184. 						m_Recmode=false;

  185. 					}

  186. 						

  187. 				}

  188. 			}

  189. 			else

  190. 			m_CheckedAlready=false;

  191. 		}*/

  192. 	}

  193. 	

  194. 	if (m_Mode==INPUT || m_Mode==DUPLEX) OSSOutput::Get()->GetStereo(GetOutputBuf(0),GetOutputBuf(1));	

  195. }

  196. 

  197. void OutputPlugin::ExecuteCommands()

  198. {

  199. 	// Only Play() once per set of plugins

  200. 		

  201. 	m_NoExecuted--;

  202. 	if (m_NoExecuted<=0)

  203. 	{	

  204. 		if (m_Mode==INPUT || m_Mode==DUPLEX) OSSOutput::Get()->Read();		

  205. 		if (m_Mode==OUTPUT || m_Mode==DUPLEX) OSSOutput::Get()->Play();		

  206. 		m_NoExecuted=m_RefCount;

  207. 	}

  208. 

  209. 

  210. 	if (m_AudioCH->IsCommandWaiting())

  211. 	{

  212. 		switch(m_AudioCH->GetCommand())

  213. 		{

  214. 			case OPENREAD : 

  215. 				if (OSSOutput::Get()->OpenRead())

  216. 				{

  217. 					m_Mode=INPUT;

  218. 					//cb_Blocking(m_Parent,true); 

  219. 				}

  220. 			break;

  221. 			case OPENWRITE : 

  222. 				if (OSSOutput::Get()->OpenWrite()) 

  223. 				{

  224. 					m_Mode=OUTPUT;

  225. 					cb_Blocking(m_Parent,true); 

  226. 				}

  227. 			break;

  228. 			case OPENDUPLEX : 

  229. 				if (OSSOutput::Get()->OpenReadWrite()) 

  230. 				{

  231. 					m_Mode=DUPLEX;

  232. 					cb_Blocking(m_Parent,true); 

  233. 				}

  234. 			break;

  235. 			case CLOSE : 

  236. 				m_Mode=CLOSED;

  237. 				cb_Blocking(m_Parent,false); 

  238. 				OSSOutput::Get()->Close(); 

  239. 			break;

  240. 			case SET_VOLUME : OSSOutput::Get()->SetVolume(m_Volume); break;			

  241. 			default : break;

  242. 		}

  243. 	}

  244. }

  245. 

  246. //////////////////////////////////////////////////////////////////////

  247. //////////////////////////////////////////////////////////////////////

  248. 

  249. OSSOutput::OSSOutput() :

  250. m_Amp(0.5),

  251. m_Channels(2),

  252. m_ReadBufferNum(0),

  253. m_WriteBufferNum(0),

  254. m_OutputOk(false)

  255. { 

  256. 	m_Buffer[0]=NULL;

  257. 	m_Buffer[1]=NULL;

  258. 	m_InBuffer[0]=NULL;

  259. 	m_InBuffer[1]=NULL;

  260. }

  261. 

  262. //////////////////////////////////////////////////////////////////////

  263. 

  264. OSSOutput::~OSSOutput()

  265. {

  266. 	Close();

  267. }

  268. 

  269. //////////////////////////////////////////////////////////////////////

  270. 

  271. void OSSOutput::AllocateBuffer()

  272. {

  273. 	if (m_Buffer[0]==NULL)

  274. 	{

  275. 		m_BufSizeBytes=host->BUFSIZE*m_Channels*2;

  276. 		

  277. 		// initialise for stereo

  278. 		m_Buffer[0] = (short*) calloc(m_BufSizeBytes/2,m_BufSizeBytes);

  279. 		m_Buffer[1] = (short*) calloc(m_BufSizeBytes/2,m_BufSizeBytes);

  280. 		m_InBuffer[0] = (short*) calloc(m_BufSizeBytes/2,m_BufSizeBytes);

  281. 		m_InBuffer[1] = (short*) calloc(m_BufSizeBytes/2,m_BufSizeBytes);

  282. 	}

  283. 	

  284. 	m_Wav.SetSamplerate(host->SAMPLERATE);

  285. }

  286. 

  287. //////////////////////////////////////////////////////////////////////

  288. 

  289. void OSSOutput::SendStereo(const Sample *ldata,const Sample *rdata) 

  290. {

  291. 	if (m_Channels!=2) return;

  292. 	

  293. 	int on=0;

  294. 	float t;

  295. 	for (int n=0; n<host->BUFSIZE; n++)

  296. 	{

  297. 		// stereo channels - interleave	

  298. 		if (ldata) 

  299. 		{

  300. 			t=(*ldata)[n]*m_Amp;

  301. 			if (t>1) t=1;

  302. 			if (t<-1) t=-1;

  303. 			m_Buffer[m_WriteBufferNum][on]+=lrintf(t*SHRT_MAX);

  304. 		}

  305. 		on++;

  306. 		

  307. 		if (rdata) 

  308. 		{

  309. 			t=(*rdata)[n]*m_Amp;

  310. 			if (t>1) t=1;

  311. 			if (t<-1) t=-1;

  312. 			m_Buffer[m_WriteBufferNum][on]+=lrintf(t*SHRT_MAX);

  313. 		}		

  314. 		on++;

  315. 	}

  316. }

  317. 

  318. //////////////////////////////////////////////////////////////////////

  319. 

  320. void OSSOutput::Play()

  321. {

  322.     int BufferToSend=!m_WriteBufferNum;

  323. 	

  324.     #if __BYTE_ORDER == BIG_ENDIAN

  325.     for (int n=0; n<host->BUFSIZE*m_Channels; n++)

  326.     {		

  327. 		m_Buffer[BufferToSend][n]=(short)((m_Buffer[BufferToSend][n]<<8)&0xff00)|

  328. 		                                 ((m_Buffer[BufferToSend][n]>>8)&0xff);

  329.     }

  330.     #endif	

  331. 	if (m_OutputOk)

  332. 	{

  333. 		write(m_Dspfd,m_Buffer[BufferToSend],m_BufSizeBytes);

  334. 	}

  335. 		

  336.     if(m_Wav.Recording()) 

  337.     {

  338.         m_Wav.Save(m_Buffer[BufferToSend],m_BufSizeBytes);

  339.     }

  340. 

  341. 	memset(m_Buffer[BufferToSend],0,m_BufSizeBytes);

  342. 	m_WriteBufferNum=BufferToSend;

  343. }

  344. 

  345. //////////////////////////////////////////////////////////////////////

  346. 

  347. void OSSOutput::GetStereo(Sample *ldata,Sample *rdata) 

  348. {

  349. 	if (m_Channels!=2) return;

  350. 	

  351. 	int on=0;

  352. 	for (int n=0; n<host->BUFSIZE; n++)

  353. 	{

  354. 		// stereo channels - interleave	

  355. 		if (ldata) ldata->Set(n,(m_InBuffer[m_ReadBufferNum][on]*m_Amp)/(float)SHRT_MAX);

  356. 		on++;

  357. 		if (rdata) rdata->Set(n,(m_InBuffer[m_ReadBufferNum][on]*m_Amp)/(float)SHRT_MAX);

  358. 		on++;

  359. 	}

  360. }

  361. 

  362. //////////////////////////////////////////////////////////////////////

  363. 

  364. void OSSOutput::Read()

  365. {

  366.     int BufferToRead=!m_ReadBufferNum;

  367. 

  368. 	if (m_OutputOk)

  369. 		read(m_Dspfd,m_InBuffer[BufferToRead],m_BufSizeBytes);

  370. 	

  371.     #if __BYTE_ORDER == BIG_ENDIAN

  372.     for (int n=0; n<host->BUFSIZE*m_Channels; n++)

  373.     {		

  374. 		m_InBuffer[BufferToRead][n]=(short)((m_InBuffer[BufferToRead][n]<<8)&0xff00)|

  375. 		                                   ((m_InBuffer[BufferToRead][n]>>8)&0xff);

  376.     }

  377.     #endif	

  378.     

  379. 	m_ReadBufferNum=BufferToRead;

  380. }

  381. 

  382. //////////////////////////////////////////////////////////////////////

  383. 

  384. bool OSSOutput::Close()

  385. { 	

  386. 	cerr<<"Closing dsp output"<<endl;

  387. 	close(m_Dspfd);

  388. 	

  389. 	return true;

  390. }

  391. 

  392. //////////////////////////////////////////////////////////////////////

  393. 

  394. bool OSSOutput::OpenWrite()

  395. { 	

  396. 	int result,val;

  397. 	cerr<<"Opening dsp output"<<endl;

  398.   

  399. 	m_Dspfd = open(host->OUTPUTFILE.c_str(),O_WRONLY);  

  400. 	if(m_Dspfd<0) 

  401. 	{

  402. 		fprintf(stderr,"Can't open audio driver for writing.\n");

  403. 		m_OutputOk=false;

  404. 		return false;

  405. 	}

  406.    

  407. 	result = ioctl(m_Dspfd,SNDCTL_DSP_RESET,NULL);

  408. 

  409. 	CHECK_AND_REPORT_ERROR;

  410. 			 

  411. 	short fgmtsize=0;

  412. 	int numfgmts=host->FRAGCOUNT;	 	 

  413. 	if (host->FRAGCOUNT==-1) numfgmts=0x7fff;

  414. 	

  415. 	for (int i=0; i<32; i++)

  416. 	{	 	

  417. 		if ((host->FRAGSIZE)==(1<<i)) 

  418. 		{

  419. 			fgmtsize=i; 

  420. 			break;

  421. 		}

  422. 	}

  423. 

  424. 	if (fgmtsize==0)

  425. 	{

  426. 		cerr<<"Fragment size ["<<host->FRAGSIZE<<"] must be power of two!"<<endl;

  427. 		fgmtsize=256;

  428. 	}

  429.  	 	

  430. 	numfgmts=numfgmts<<16;

  431. 	val=numfgmts|(int)fgmtsize;

  432. 	result=ioctl(m_Dspfd, SNDCTL_DSP_SETFRAGMENT, &val);

  433. 	CHECK_AND_REPORT_ERROR;

  434. 	

  435. 	val = 1;

  436. 	result = ioctl(m_Dspfd, SOUND_PCM_WRITE_CHANNELS, &val);

  437. 	CHECK_AND_REPORT_ERROR;

  438. 	

  439. 	val = AFMT_S16_LE;

  440. 	result = ioctl(m_Dspfd,SNDCTL_DSP_SETFMT,&val);	 

  441. 	CHECK_AND_REPORT_ERROR;

  442. 

  443. 	if (m_Channels==2) val=1;

  444. 	else val=0;

  445. 	result = ioctl(m_Dspfd,SNDCTL_DSP_STEREO,&val);

  446. 	CHECK_AND_REPORT_ERROR;

  447. 		

  448. 	val = host->SAMPLERATE;

  449. 	result = ioctl(m_Dspfd,SNDCTL_DSP_SPEED,&val);

  450. 	CHECK_AND_REPORT_ERROR;

  451. 	

  452. 	m_OutputOk=true;

  453. 	return true;

  454. }

  455. 

  456. //////////////////////////////////////////////////////////////////////

  457. 

  458. bool OSSOutput::OpenRead()

  459. { 	

  460. 	int result,val;

  461.   

  462. 	cerr<<"Opening dsp input"<<endl;

  463. 

  464. 	m_Dspfd = open(host->OUTPUTFILE.c_str(),O_RDONLY);  

  465. 	if(m_Dspfd<0) 

  466. 	{

  467. 		fprintf(stderr,"Can't open audio driver for reading.\n");

  468. 		m_OutputOk=false;

  469. 		return false;

  470. 	}

  471.    

  472. 	result = ioctl(m_Dspfd,SNDCTL_DSP_RESET,NULL);

  473. 	CHECK_AND_REPORT_ERROR;

  474. 	

  475. 	val = 1;

  476. 	result = ioctl(m_Dspfd, SOUND_PCM_READ_CHANNELS, &val);

  477. 	CHECK_AND_REPORT_ERROR;

  478. 	

  479. 	val = AFMT_S16_LE;

  480. 	result = ioctl(m_Dspfd,SNDCTL_DSP_SETFMT,&val);	 

  481. 	CHECK_AND_REPORT_ERROR;

  482. 	

  483. 	val = host->SAMPLERATE;

  484. 	result = ioctl(m_Dspfd,SNDCTL_DSP_SPEED,&val);

  485. 	CHECK_AND_REPORT_ERROR;

  486. 	m_OutputOk=true;

  487. 	

  488. 	return true;

  489. }

  490. 

  491. //////////////////////////////////////////////////////////////////////

  492. 

  493. bool OSSOutput::OpenReadWrite()

  494. { 	

  495. 	int result,val;

  496. 	cerr<<"Opening dsp output (duplex)"<<endl;

  497.   

  498. 	m_Dspfd = open(host->OUTPUTFILE.c_str(),O_RDWR);  

  499. 	if(m_Dspfd<0) 

  500. 	{

  501. 		fprintf(stderr,"Can't open audio driver for writing.\n");

  502. 		m_OutputOk=false;

  503. 		return false;

  504. 	}

  505.    

  506. 	result = ioctl(m_Dspfd,SNDCTL_DSP_RESET,NULL);

  507. 

  508. 	CHECK_AND_REPORT_ERROR;

  509. 			 

  510. 	short fgmtsize=0;

  511. 	int numfgmts=host->FRAGCOUNT;	 	 

  512. 	if (host->FRAGCOUNT==-1) numfgmts=0x7fff;

  513. 	

  514. 	for (int i=0; i<32; i++)

  515. 	{	 	

  516. 		if ((host->FRAGSIZE)==(1<<i)) 

  517. 		{

  518. 			fgmtsize=i; 

  519. 			break;

  520. 		}

  521. 	}

  522. 

  523. 	if (fgmtsize==0)

  524. 	{

  525. 		cerr<<"Fragment size ["<<host->FRAGSIZE<<"] must be power of two!"<<endl;

  526. 		fgmtsize=256;

  527. 	}

  528.  	 	

  529. 	numfgmts=numfgmts<<16;

  530. 	val=numfgmts|(int)fgmtsize;

  531. 	result=ioctl(m_Dspfd, SNDCTL_DSP_SETFRAGMENT, &val);

  532. 	CHECK_AND_REPORT_ERROR;

  533. 	

  534. 	val = 1;

  535. 	result = ioctl(m_Dspfd, SOUND_PCM_WRITE_CHANNELS, &val);

  536. 	CHECK_AND_REPORT_ERROR;

  537. 	

  538. 	val = AFMT_S16_LE;

  539. 	result = ioctl(m_Dspfd,SNDCTL_DSP_SETFMT,&val);	 

  540. 	CHECK_AND_REPORT_ERROR;

  541. 

  542. 	if (m_Channels==2) val=1;

  543. 	else val=0;

  544. 	result = ioctl(m_Dspfd,SNDCTL_DSP_STEREO,&val);

  545. 	CHECK_AND_REPORT_ERROR;

  546. 		

  547. 	val = host->SAMPLERATE;

  548. 	result = ioctl(m_Dspfd,SNDCTL_DSP_SPEED,&val);

  549. 	CHECK_AND_REPORT_ERROR;

  550. 	m_OutputOk=true;

  551. 	

  552.     return true;

  553. }