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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. using namespace std;

  48. 

  49. static const int IN_FREQ  = 0;

  50. static const int IN_PW    = 1;

  51. static const int IN_SHLEN = 2;

  52. 

  53. static const int OUT_MAIN = 0;

  54. 

  55. static const HostInfo* host;

  56. OSSOutput* OSSOutput::m_Singleton = NULL;

  57. int OutputPlugin::m_RefCount=0;

  58. int OutputPlugin::m_NoExecuted=0;

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

  60. 

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

  62. 								{                     \

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

  64. 									m_OutputOk=false; \

  65. 									return false;     \

  66. 								}

  67. 

  68. extern "C"

  69. {

  70. SpiralPlugin* SpiralPlugin_CreateInstance()

  71. {

  72. 	return new OutputPlugin;

  73. }

  74. 

  75. char** SpiralPlugin_GetIcon()

  76. {	

  77. 	return SpiralIcon_xpm;

  78. }

  79. 

  80. int SpiralPlugin_GetID()

  81. {

  82. 	return 0x0000;

  83. }

  84. 

  85. string SpiralPlugin_GetGroupName()

  86. {

  87. 	return "InputOutput";

  88. }

  89. }

  90. 

  91. ///////////////////////////////////////////////////////

  92. 

  93. OutputPlugin::OutputPlugin() :

  94. m_Volume(1.0f)

  95. {

  96. 	m_RefCount++;

  97. 	// we are an output.

  98. 	m_IsTerminal=true;

  99.         m_NotifyOpenOut=false;

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

  111.         m_AudioCH->Register ("OpenOut", &m_NotifyOpenOut, ChannelHandler::OUTPUT);

  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, m_PluginInfo.Height, this, m_AudioCH, m_HostInfo);

  137. }

  138. 

  139. void OutputPlugin::Execute()

  140. {

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

  142. 	{

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

  144. 		{

  145. 			cb_Blocking(m_Parent,true);

  146. 			m_Mode=OUTPUT;

  147.                         m_NotifyOpenOut=true;

  148. 		}

  149. 	}

  150. 

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

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

  153. 

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

  155. 	{

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

  157. 

  158. 		// can't open GUI stuff here

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

  160. 		{

  161. 			// can't open GUI stuff here

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

  163. 			{

  164. 				if (! m_CheckedAlready)

  165. 				{

  166. 				m_CheckedAlready=true;

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

  168. 				n=m_HostInfo->BUFSIZE;

  169. 					if (! m_Recmode)

  170. 					{

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

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

  173. 						{

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

  175. 						}

  176. 						m_Recmode=true;

  177. 					}

  178. 					else

  179. 					{

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

  181. 						m_Recmode=false;

  182. 					}

  183. 

  184. 				}

  185. 			}

  186. 			else

  187. 			m_CheckedAlready=false;

  188. 		}*/

  189. 	}

  190. 

  191. 	if (m_Mode==INPUT || m_Mode==DUPLEX)

  192.            OSSOutput::Get()->GetStereo(GetOutputBuf(0),GetOutputBuf(1));

  193. }

  194. 

  195. void OutputPlugin::ExecuteCommands()

  196. {

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

  198. 

  199. 	m_NoExecuted--;

  200. 	if (m_NoExecuted<=0)

  201. 	{

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

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

  204. 		m_NoExecuted=m_RefCount;

  205. 	}

  206. 

  207. 

  208. 	if (m_AudioCH->IsCommandWaiting())

  209. 	{

  210. 		switch(m_AudioCH->GetCommand())

  211. 		{

  212. 			case OPENREAD :

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

  214. 				{

  215. 					m_Mode=INPUT;

  216. 					//cb_Blocking(m_Parent,true);

  217. 				}

  218. 			break;

  219. 			case OPENWRITE :

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

  221. 				{

  222. 					m_Mode=OUTPUT;

  223. 					cb_Blocking(m_Parent,true);

  224. 				}

  225. 			break;

  226. 			case OPENDUPLEX :

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

  228. 				{

  229. 					m_Mode=DUPLEX;

  230. 					cb_Blocking(m_Parent,true);

  231. 				}

  232. 			break;

  233. 			case CLOSE :

  234. 				m_Mode=CLOSED;

  235. 				cb_Blocking(m_Parent,false);

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

  237. 			break;

  238. 			case SET_VOLUME :

  239.                                 OSSOutput::Get()->SetVolume(m_Volume);

  240.                                 break;

  241.                         case CLEAR_NOTIFY:

  242.                                 m_NotifyOpenOut=false;

  243.                                 break;

  244.                         default: break;

  245. 		}

  246.         }

  247. }

  248. 

  249. //////////////////////////////////////////////////////////////////////

  250. //////////////////////////////////////////////////////////////////////

  251. 

  252. OSSOutput::OSSOutput() :

  253. m_Amp(0.5),

  254. m_Channels(2),

  255. m_ReadBufferNum(0),

  256. m_WriteBufferNum(0),

  257. m_OutputOk(false)

  258. {

  259. 	m_Buffer[0]=NULL;

  260. 	m_Buffer[1]=NULL;

  261. 	m_InBuffer[0]=NULL;

  262. 	m_InBuffer[1]=NULL;

  263. }

  264. 

  265. //////////////////////////////////////////////////////////////////////

  266. 

  267. OSSOutput::~OSSOutput()

  268. {

  269. 	Close();

  270. }

  271. 

  272. //////////////////////////////////////////////////////////////////////

  273. 

  274. void OSSOutput::AllocateBuffer()

  275. {

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

  277. 	{

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

  279. 		

  280. 		// initialise for stereo

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

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

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

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

  285. 	}

  286. 	

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

  288. }

  289. 

  290. //////////////////////////////////////////////////////////////////////

  291. 

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

  293. {

  294. 	if (m_Channels!=2) return;

  295. 	

  296. 	int on=0;

  297. 	float t;

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

  299. 	{

  300. 		// stereo channels - interleave	

  301. 		if (ldata) 

  302. 		{

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

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

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

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

  307. 		}

  308. 		on++;

  309. 		

  310. 		if (rdata) 

  311. 		{

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

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

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

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

  316. 		}		

  317. 		on++;

  318. 	}

  319. }

  320. 

  321. //////////////////////////////////////////////////////////////////////

  322. 

  323. void OSSOutput::Play()

  324. {

  325.     int BufferToSend=!m_WriteBufferNum;

  326. 	

  327.     #if __BYTE_ORDER == BIG_ENDIAN

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

  329.     {		

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

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

  332.     }

  333.     #endif	

  334. 	if (m_OutputOk)

  335. 	{

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

  337. 	}

  338. 		

  339.     if(m_Wav.Recording()) 

  340.     {

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

  342.     }

  343. 

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

  345. 	m_WriteBufferNum=BufferToSend;

  346. }

  347. 

  348. //////////////////////////////////////////////////////////////////////

  349. 

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

  351. {

  352. 	if (m_Channels!=2) return;

  353. 	

  354. 	int on=0;

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

  356. 	{

  357. 		// stereo channels - interleave	

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

  359. 		on++;

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

  361. 		on++;

  362. 	}

  363. }

  364. 

  365. //////////////////////////////////////////////////////////////////////

  366. 

  367. void OSSOutput::Read()

  368. {

  369.     int BufferToRead=!m_ReadBufferNum;

  370. 

  371. 	if (m_OutputOk)

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

  373. 	

  374.     #if __BYTE_ORDER == BIG_ENDIAN

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

  376.     {		

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

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

  379.     }

  380.     #endif	

  381.     

  382. 	m_ReadBufferNum=BufferToRead;

  383. }

  384. 

  385. //////////////////////////////////////////////////////////////////////

  386. 

  387. bool OSSOutput::Close()

  388. { 	

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

  390. 	close(m_Dspfd);

  391. 	

  392. 	return true;

  393. }

  394. 

  395. //////////////////////////////////////////////////////////////////////

  396. 

  397. bool OSSOutput::OpenWrite()

  398. { 	

  399. 	int result,val;

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

  401.   

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

  403. 	if(m_Dspfd<0) 

  404. 	{

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

  406. 		m_OutputOk=false;

  407. 		return false;

  408. 	}

  409.    

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

  411. 

  412. 	CHECK_AND_REPORT_ERROR;

  413. 			 

  414. 	short fgmtsize=0;

  415. 	int numfgmts=host->FRAGCOUNT;	 	 

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

  417. 	

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

  419. 	{	 	

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

  421. 		{

  422. 			fgmtsize=i; 

  423. 			break;

  424. 		}

  425. 	}

  426. 

  427. 	if (fgmtsize==0)

  428. 	{

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

  430. 		fgmtsize=256;

  431. 	}

  432.  	 	

  433. 	numfgmts=numfgmts<<16;

  434. 	val=numfgmts|(int)fgmtsize;

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

  436. 	CHECK_AND_REPORT_ERROR;

  437. 	

  438. 	val = 1;

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

  440. 	CHECK_AND_REPORT_ERROR;

  441. 	

  442. 	val = AFMT_S16_LE;

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

  444. 	CHECK_AND_REPORT_ERROR;

  445. 

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

  447. 	else val=0;

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

  449. 	CHECK_AND_REPORT_ERROR;

  450. 		

  451. 	val = host->SAMPLERATE;

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

  453. 	CHECK_AND_REPORT_ERROR;

  454. 	

  455. 	m_OutputOk=true;

  456. 	return true;

  457. }

  458. 

  459. //////////////////////////////////////////////////////////////////////

  460. 

  461. bool OSSOutput::OpenRead()

  462. { 	

  463. 	int result,val;

  464.   

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

  466. 

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

  468. 	if(m_Dspfd<0) 

  469. 	{

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

  471. 		m_OutputOk=false;

  472. 		return false;

  473. 	}

  474.    

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

  476. 	CHECK_AND_REPORT_ERROR;

  477. 	

  478. 	val = 1;

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

  480. 	CHECK_AND_REPORT_ERROR;

  481. 	

  482. 	val = AFMT_S16_LE;

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

  484. 	CHECK_AND_REPORT_ERROR;

  485. 	

  486. 	val = host->SAMPLERATE;

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

  488. 	CHECK_AND_REPORT_ERROR;

  489. 	m_OutputOk=true;

  490. 	

  491. 	return true;

  492. }

  493. 

  494. //////////////////////////////////////////////////////////////////////

  495. 

  496. bool OSSOutput::OpenReadWrite()

  497. { 	

  498. 	int result,val;

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

  500.   

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

  502. 	if(m_Dspfd<0) 

  503. 	{

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

  505. 		m_OutputOk=false;

  506. 		return false;

  507. 	}

  508.    

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

  510. 

  511. 	CHECK_AND_REPORT_ERROR;

  512. 			 

  513. 	short fgmtsize=0;

  514. 	int numfgmts=host->FRAGCOUNT;	 	 

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

  516. 	

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

  518. 	{	 	

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

  520. 		{

  521. 			fgmtsize=i; 

  522. 			break;

  523. 		}

  524. 	}

  525. 

  526. 	if (fgmtsize==0)

  527. 	{

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

  529. 		fgmtsize=256;

  530. 	}

  531.  	 	

  532. 	numfgmts=numfgmts<<16;

  533. 	val=numfgmts|(int)fgmtsize;

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

  535. 	CHECK_AND_REPORT_ERROR;

  536. 	

  537. 	val = 1;

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

  539. 	CHECK_AND_REPORT_ERROR;

  540. 	

  541. 	val = AFMT_S16_LE;

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

  543. 	CHECK_AND_REPORT_ERROR;

  544. 

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

  546. 	else val=0;

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

  548. 	CHECK_AND_REPORT_ERROR;

  549. 		

  550. 	val = host->SAMPLERATE;

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

  552. 	CHECK_AND_REPORT_ERROR;

  553. 	m_OutputOk=true;

  554. 	

  555.     return true;

  556. }