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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. 

  140. bool OutputPlugin::Kill()

  141. {

  142. 	m_IsDead=true;

  143. 	OSSOutput::Get()->Kill();

  144. 	m_Mode=CLOSED;

  145. 	cb_Blocking(m_Parent,false);

  146. 	return true;

  147. }

  148. 

  149. void OutputPlugin::Execute()

  150. {

  151. 	if (m_IsDead) 

  152. 		return;

  153. 	

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

  155. 	{

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

  157. 		{

  158. 			cb_Blocking(m_Parent,true);

  159. 			m_Mode=OUTPUT;

  160.                         m_NotifyOpenOut=true;

  161. 		}

  162. 	}

  163. 

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

  165. 	{

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

  167. 	}

  168. 

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

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

  171. }

  172. 

  173. void OutputPlugin::ExecuteCommands()

  174. {

  175. 	if (m_IsDead) 

  176. 		return;

  177. 

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

  179. 	m_NoExecuted--;

  180. 	if (m_NoExecuted<=0)

  181. 	{

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

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

  184. 		m_NoExecuted=m_RefCount;

  185. 	}

  186. 

  187. 

  188. 	if (m_AudioCH->IsCommandWaiting())

  189. 	{

  190. 		switch(m_AudioCH->GetCommand())

  191. 		{

  192. 			case OPENREAD :

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

  194. 				{

  195. 					m_Mode=INPUT;

  196. 					//cb_Blocking(m_Parent,true);

  197. 				}

  198. 			break;

  199. 			case OPENWRITE :

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

  201. 				{

  202. 					m_Mode=OUTPUT;

  203. 					cb_Blocking(m_Parent,true);

  204. 				}

  205. 			break;

  206. 			case OPENDUPLEX :

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

  208. 				{

  209. 					m_Mode=DUPLEX;

  210. 					cb_Blocking(m_Parent,true);

  211. 				}

  212. 			break;

  213. 			case CLOSE :

  214. 				m_Mode=CLOSED;

  215. 				cb_Blocking(m_Parent,false);

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

  217. 			break;

  218. 			case SET_VOLUME :

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

  220.                                 break;

  221.                         case CLEAR_NOTIFY:

  222.                                 m_NotifyOpenOut=false;

  223.                                 break;

  224.                         default: break;

  225. 		}

  226.         }

  227. }

  228. 

  229. //////////////////////////////////////////////////////////////////////

  230. //////////////////////////////////////////////////////////////////////

  231. 

  232. OSSOutput::OSSOutput() :

  233. m_Amp(0.5),

  234. m_Channels(2),

  235. m_ReadBufferNum(0),

  236. m_WriteBufferNum(0),

  237. m_OutputOk(false),

  238. m_IsDead(false)

  239. 

  240. {

  241. 	m_Buffer[0]=NULL;

  242. 	m_Buffer[1]=NULL;

  243. 	m_InBuffer[0]=NULL;

  244. 	m_InBuffer[1]=NULL;

  245. }

  246. 

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

  248. 

  249. OSSOutput::~OSSOutput()

  250. {

  251. 	Close();

  252. 	DeallocateBuffer();

  253. }

  254. 

  255. //////////////////////////////////////////////////////////////////////

  256. 

  257. void OSSOutput::AllocateBuffer()

  258. {

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

  260. 	{

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

  262. 		

  263. 		// initialise for stereo

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

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

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

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

  268. 	}

  269. 	

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

  271. }

  272. 

  273. void OSSOutput::DeallocateBuffer()

  274. {

  275. 	if (m_Buffer[0]!=NULL)

  276. 	{

  277. 		m_BufSizeBytes=0;

  278. 		

  279. 		// initialise for stereo

  280. 		free(m_Buffer[0]);

  281. 		free(m_Buffer[1]);

  282. 		free(m_InBuffer[0]);

  283. 		free(m_InBuffer[1]);

  284. 	}

  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. 		if (m_IsDead) return;

  298. 

  299. 		// stereo channels - interleave	

  300. 		if (ldata) 

  301. 		{

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

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

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

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

  306. 		}

  307. 		on++;

  308. 		

  309. 		if (rdata) 

  310. 		{

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

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

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

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

  315. 		}		

  316. 		on++;

  317. 	}

  318. }

  319. 

  320. //////////////////////////////////////////////////////////////////////

  321. 

  322. void OSSOutput::Play()

  323. {

  324.     int BufferToSend=!m_WriteBufferNum;

  325. 	

  326.     #if __BYTE_ORDER == BIG_ENDIAN

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

  328.     {		

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

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

  331.     }

  332.     #endif	

  333. 	if (m_OutputOk)

  334. 	{

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

  336. 	}

  337. 		

  338.     if(m_Wav.Recording()) 

  339.     {

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

  341.     }

  342. 

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

  344. 	m_WriteBufferNum=BufferToSend;

  345. }

  346. 

  347. //////////////////////////////////////////////////////////////////////

  348. 

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

  350. {

  351. 	if (m_Channels!=2) return;

  352. 	

  353. 	int on=0;

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

  355. 	{

  356. 		if (m_IsDead) return;

  357. 

  358. 		// stereo channels - interleave	

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

  360. 		on++;

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

  362. 		on++;

  363. 	}

  364. }

  365. 

  366. //////////////////////////////////////////////////////////////////////

  367. 

  368. void OSSOutput::Read()

  369. {

  370.     int BufferToRead=!m_ReadBufferNum;

  371. 

  372. 	if (m_OutputOk)

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

  374. 	

  375.     #if __BYTE_ORDER == BIG_ENDIAN

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

  377.     {		

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

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

  380.     }

  381.     #endif	

  382.     

  383. 	m_ReadBufferNum=BufferToRead;

  384. }

  385. 

  386. //////////////////////////////////////////////////////////////////////

  387. 

  388. bool OSSOutput::Close()

  389. { 	

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

  391. 	close(m_Dspfd);

  392. 	

  393. 	return true;

  394. }

  395. 

  396. //////////////////////////////////////////////////////////////////////

  397. 

  398. bool OSSOutput::OpenWrite()

  399. { 	

  400. 	int result,val;

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

  402.   

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

  404. 	if(m_Dspfd<0) 

  405. 	{

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

  407. 		m_OutputOk=false;

  408. 		return false;

  409. 	}

  410.    

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

  412. 

  413. 	CHECK_AND_REPORT_ERROR;

  414. 			 

  415. 	short fgmtsize=0;

  416. 	int numfgmts=host->FRAGCOUNT;	 	 

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

  418. 	

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

  420. 	{	 	

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

  422. 		{

  423. 			fgmtsize=i; 

  424. 			break;

  425. 		}

  426. 	}

  427. 

  428. 	if (fgmtsize==0)

  429. 	{

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

  431. 		fgmtsize=256;

  432. 	}

  433.  	 	

  434. 	numfgmts=numfgmts<<16;

  435. 	val=numfgmts|(int)fgmtsize;

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

  437. 	CHECK_AND_REPORT_ERROR;

  438. 	

  439. 	val = 1;

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

  441. 	CHECK_AND_REPORT_ERROR;

  442. 	

  443. 	val = AFMT_S16_LE;

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

  445. 	CHECK_AND_REPORT_ERROR;

  446. 

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

  448. 	else val=0;

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

  450. 	CHECK_AND_REPORT_ERROR;

  451. 		

  452. 	val = host->SAMPLERATE;

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

  454. 	CHECK_AND_REPORT_ERROR;

  455. 	

  456. 	m_OutputOk=true;

  457. 	return true;

  458. }

  459. 

  460. //////////////////////////////////////////////////////////////////////

  461. 

  462. bool OSSOutput::OpenRead()

  463. { 	

  464. 	int result,val;

  465.   

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

  467. 

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

  469. 	if(m_Dspfd<0) 

  470. 	{

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

  472. 		m_OutputOk=false;

  473. 		return false;

  474. 	}

  475.    

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

  477. 	CHECK_AND_REPORT_ERROR;

  478. 	

  479. 	val = 1;

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

  481. 	CHECK_AND_REPORT_ERROR;

  482. 	

  483. 	val = AFMT_S16_LE;

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

  485. 	CHECK_AND_REPORT_ERROR;

  486. 	

  487. 	val = host->SAMPLERATE;

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

  489. 	CHECK_AND_REPORT_ERROR;

  490. 	m_OutputOk=true;

  491. 	

  492. 	return true;

  493. }

  494. 

  495. //////////////////////////////////////////////////////////////////////

  496. 

  497. bool OSSOutput::OpenReadWrite()

  498. { 	

  499. 	int result,val;

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

  501.   

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

  503. 	if(m_Dspfd<0) 

  504. 	{

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

  506. 		m_OutputOk=false;

  507. 		return false;

  508. 	}

  509.    

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

  511. 

  512. 	CHECK_AND_REPORT_ERROR;

  513. 			 

  514. 	short fgmtsize=0;

  515. 	int numfgmts=host->FRAGCOUNT;	 	 

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

  517. 	

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

  519. 	{	 	

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

  521. 		{

  522. 			fgmtsize=i; 

  523. 			break;

  524. 		}

  525. 	}

  526. 

  527. 	if (fgmtsize==0)

  528. 	{

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

  530. 		fgmtsize=256;

  531. 	}

  532.  	 	

  533. 	numfgmts=numfgmts<<16;

  534. 	val=numfgmts|(int)fgmtsize;

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

  536. 	CHECK_AND_REPORT_ERROR;

  537. 	

  538. 	val = 1;

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

  540. 	CHECK_AND_REPORT_ERROR;

  541. 	

  542. 	val = AFMT_S16_LE;

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

  544. 	CHECK_AND_REPORT_ERROR;

  545. 

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

  547. 	else val=0;

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

  549. 	CHECK_AND_REPORT_ERROR;

  550. 		

  551. 	val = host->SAMPLERATE;

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

  553. 	CHECK_AND_REPORT_ERROR;

  554. 	m_OutputOk=true;

  555. 	

  556.     return true;

  557. }