5 #include "slPortability.h"
7 #ifdef SL_USING_OSS_AUDIO
8 #define SLDSP_DEFAULT_DEVICE "/dev/dsp"
10 #define SLDSP_DEFAULT_DEVICE "dsp"
11 #elif defined(__OpenBSD__)
12 #define SLDSP_DEFAULT_DEVICE "/dev/audio"
14 #define SLDSP_DEFAULT_DEVICE "dsp" // dummy ...
22 typedef unsigned char Uchar ;
23 typedef unsigned short Ushort ;
25 #define SL_DEFAULT_SAMPLING_RATE 11025
28 class slSamplePlayer ;
45 audio_info_t ainfo; // ioctl structure
46 audio_offset_t audio_offset; // offset in audiostream
47 long counter; // counter-written packets
48 #elif defined(SL_USING_OSS_AUDIO)
49 audio_buf_info buff_info ;
51 ALconfig config; // configuration stuff
52 ALport port; // .. we are here
57 int ioctl ( int cmd, int param = 0 )
59 if ( error ) return param ;
61 if ( ::ioctl ( fd, cmd, & param ) == -1 )
63 perror ( "slDSP: ioctl" ) ;
72 HWAVEOUT hWaveOut; // device handle
73 WAVEFORMATEX Format; // open needs this
75 WAVEHDR wavehdr[ 3 ]; // for round robin ..
76 int curr_header; // index of actual wavehdr
77 long counter; // counter-written packets
81 void open ( char *device, int _rate, int _stereo, int _bps ) ;
83 void getBufferInfo () ;
84 void write ( void *buffer, size_t length ) ;
88 void setError () { error = SL_TRUE ; }
89 int getDriverBufferSize () ;
93 slDSP ( int _rate = SL_DEFAULT_SAMPLING_RATE,
94 int _stereo = SL_FALSE, int _bps = 8 )
96 open ( SLDSP_DEFAULT_DEVICE, _rate, _stereo, _bps ) ;
99 slDSP ( char *device, int _rate = SL_DEFAULT_SAMPLING_RATE,
100 int _stereo = SL_FALSE, int _bps = 8 )
102 open ( device, _rate, _stereo, _bps ) ;
105 ~slDSP () { close () ; }
107 float secondsRemaining () ;
108 float secondsUsed () ;
110 void play ( void *buffer, size_t length ) { write ( buffer, length ) ; }
112 int not_working () { return error ; }
114 int getBps () { return bps ; }
115 int getRate () { return rate ; }
116 int getStereo() { return stereo ; }
142 rate = SL_DEFAULT_SAMPLING_RATE ;
149 slSample () { init () ; }
151 slSample ( Uchar *buff, int leng )
154 setBuffer ( buff, leng ) ;
157 slSample ( char *fname, class slDSP *dsp = NULL )
166 if ( ref_count != 0 )
169 "slSample: FATAL ERROR - Application deleted a sample while it was playing.\n" ) ;
176 void ref () { ref_count++ ; }
177 void unRef () { ref_count-- ; }
179 int getPlayCount () { return ref_count ; }
181 char *getComment () { return comment ; }
183 void setComment ( char *nc )
186 comment = new char [ strlen ( nc ) + 1 ] ;
187 strcpy ( comment, nc ) ;
190 Uchar *getBuffer () { return buffer ; }
191 int getLength () { return length ; }
193 void autoMatch ( slDSP *dsp ) ;
195 void setBuffer ( Uchar *buff, int leng )
199 buffer = new Uchar [ leng ] ;
202 memcpy ( buffer, buff, leng ) ;
207 /* These routines only set flags - use changeXXX () to convert a sound */
209 void setRate ( int r ) { rate = r ; }
210 void setBps ( int b ) { bps = b ; }
211 void setStereo ( int s ) { stereo = s ; }
213 int getRate () { return rate ; }
214 int getBps () { return bps ; }
215 int getStereo () { return stereo ; }
217 float getDuration () { return (float) getLength() /
218 (float) ( (getStereo()?2.0f:1.0f)*
219 (getBps()/8.0f)*getRate() ) ; }
221 int loadFile ( char *fname ) ;
223 int loadRawFile ( char *fname ) ;
224 int loadAUFile ( char *fname ) ;
225 int loadWavFile ( char *fname ) ;
227 void changeRate ( int r ) ;
228 void changeBps ( int b ) ;
229 void changeStereo ( int s ) ;
231 void adjustVolume ( float vol ) ;
233 void print ( FILE *fd )
235 if ( buffer == NULL )
237 fprintf ( fd, "Empty sample buffer\n" ) ;
241 fprintf ( fd, "\"%s\"\n",(getComment() == NULL ||
242 getComment()[0]=='\0') ? "Sample" : comment ) ;
243 fprintf ( fd, "%s, %d bits per sample.\n",
244 getStereo() ? "Stereo" : "Mono", getBps() ) ;
245 fprintf ( fd, "%gKHz sample rate.\n", (float) getRate() / 1000.0f ) ;
246 fprintf ( fd, "%d bytes of samples == %g seconds duration.\n", getLength(), getDuration() ) ;
254 SL_SAMPLE_WAITING, /* Sound hasn't started playing yet */
255 SL_SAMPLE_RUNNING, /* Sound has started playing */
256 SL_SAMPLE_DONE , /* Sound is complete */
257 SL_SAMPLE_PAUSED /* Sound hasn't started playing yet */
263 SL_SAMPLE_CONTINUE, /* Don't allow yourself to be preempted */
264 SL_SAMPLE_ABORT , /* Abort playing the sound when preempted */
265 SL_SAMPLE_RESTART , /* Restart the sound when load permits */
266 SL_SAMPLE_MUTE , /* Continue silently until load permits */
267 SL_SAMPLE_DELAY /* Pause until load permits */
273 SL_SAMPLE_LOOP, /* Loop sound so that it plays forever */
274 SL_SAMPLE_ONE_SHOT /* Play sound just once */
279 SL_EVENT_COMPLETE, /* Sound finished playing */
280 SL_EVENT_LOOPED, /* Sound looped back to the start */
281 SL_EVENT_PREEMPTED /* Sound was preempted */
284 typedef void (*slCallBack) ( slSample *, slEvent, int ) ;
293 slReplayMode replay_mode ;
295 int getStepDelta ( float *_time, float *delta ) ;
299 slEnvelope ( int _nsteps, slReplayMode _rm, float *_times, float *_values )
303 time = new float [ nsteps ] ;
304 value = new float [ nsteps ] ;
305 memcpy ( time , _times , sizeof(float) * nsteps ) ;
306 memcpy ( value, _values, sizeof(float) * nsteps ) ;
312 slEnvelope ( int _nsteps = 1, slReplayMode _rm = SL_SAMPLE_ONE_SHOT )
316 time = new float [ nsteps ] ;
317 value = new float [ nsteps ] ;
319 for ( int i = 0 ; i < nsteps ; i++ )
320 time [ i ] = value [ i ] = 0.0 ;
327 if ( ref_count != 0 )
330 "slEnvelope: FATAL ERROR - Application deleted an envelope while it was playing.\n" ) ;
338 void ref () { ref_count++ ; }
339 void unRef () { ref_count-- ; }
341 int getPlayCount () { return ref_count ; }
343 void setStep ( int n, float _time, float _value )
345 if ( n >= 0 && n < nsteps )
348 value [ n ] = _value ;
352 float getStepValue ( int s ) { return value [ s ] ; }
353 float getStepTime ( int s ) { return time [ s ] ; }
355 int getNumSteps () { return nsteps ; }
357 float getValue ( float _time ) ;
359 void applyToVolume ( Uchar *dst, Uchar *src, int nframes, int start ) ;
360 void applyToInvVolume ( Uchar *dst, Uchar *src, int nframes, int start ) ;
363 #define SL_MAX_PRIORITY 16
364 #define SL_MAX_SAMPLES 16
365 #define SL_MAX_CALLBACKS (SL_MAX_SAMPLES * 2)
366 #define SL_MAX_ENVELOPES 4
370 SL_PITCH_ENVELOPE , SL_INVERSE_PITCH_ENVELOPE ,
371 SL_VOLUME_ENVELOPE, SL_INVERSE_VOLUME_ENVELOPE,
372 SL_FILTER_ENVELOPE, SL_INVERSE_FILTER_ENVELOPE,
373 SL_PAN_ENVELOPE , SL_INVERSE_PAN_ENVELOPE ,
374 SL_ECHO_ENVELOPE , SL_INVERSE_ECHO_ENVELOPE ,
379 struct slPendingCallBack
381 slCallBack callback ;
389 int lengthRemaining ;
393 slEnvelope *env [ SL_MAX_ENVELOPES ] ;
394 slEnvelopeType env_type [ SL_MAX_ENVELOPES ] ;
395 int env_start_time [ SL_MAX_ENVELOPES ] ;
397 slReplayMode replay_mode ;
398 slPreemptMode preempt_mode ;
399 slSampleStatus status ;
402 slCallBack callback ;
407 slSamplePlayer ( slSample *s, slReplayMode rp_mode = SL_SAMPLE_ONE_SHOT,
408 int pri = 0, slPreemptMode pr_mode = SL_SAMPLE_DELAY,
409 int _magic = 0, slCallBack cb = NULL )
415 for ( int i = 0 ; i < SL_MAX_ENVELOPES ; i++ )
418 env_type [ i ] = SL_NULL_ENVELOPE ;
421 if ( sample ) sample -> ref () ;
425 replay_mode = rp_mode ;
426 preempt_mode = pr_mode ;
434 return lengthRemaining ;
437 slPreemptMode getPreemptMode () { return preempt_mode ; }
441 return ( isRunning() &&
442 preempt_mode == SL_SAMPLE_CONTINUE ) ? (SL_MAX_PRIORITY+1) :
446 int preempt ( int delay ) ;
448 void addEnvelope ( int i, slEnvelope *_env, slEnvelopeType _type ) ;
452 if ( status != SL_SAMPLE_DONE )
453 status = SL_SAMPLE_PAUSED ;
458 if ( status == SL_SAMPLE_PAUSED )
459 status = SL_SAMPLE_RUNNING ;
464 status = SL_SAMPLE_WAITING ;
465 lengthRemaining = sample->getLength () ;
466 bufferPos = sample->getBuffer () ;
471 status = SL_SAMPLE_RUNNING ;
472 lengthRemaining = sample->getLength () ;
473 bufferPos = sample->getBuffer () ;
478 status = SL_SAMPLE_DONE ;
479 lengthRemaining = 0 ;
483 int getMagic () { return magic ; }
484 slSample *getSample () { return sample ; }
486 int isWaiting () { return status == SL_SAMPLE_WAITING ; }
487 int isPaused () { return status == SL_SAMPLE_PAUSED ; }
488 int isRunning () { return status == SL_SAMPLE_RUNNING ; }
489 int isDone () { return status == SL_SAMPLE_DONE ; }
491 void skip ( int nframes ) ;
492 Uchar *read ( int nframes, Uchar *spare1, Uchar *spare2 ) ;
496 class slScheduler : public slDSP
498 slPendingCallBack pending_callback [ SL_MAX_CALLBACKS ] ;
499 int num_pending_callbacks ;
501 float safety_margin ;
502 int mixer_buffer_size ;
503 Uchar *mixer_buffer ;
507 slSamplePlayer *samplePlayer [ SL_MAX_SAMPLES ] ;
509 Uchar *spare_buffer1 [ 3 ] ;
510 Uchar *spare_buffer2 [ 3 ] ;
514 Uchar *mergeBlock ( Uchar *d ) ;
515 Uchar *mergeBlock ( Uchar *d, slSamplePlayer *spa ) ;
516 Uchar *mergeBlock ( Uchar *d, slSamplePlayer *spa,
517 slSamplePlayer *spb ) ;
518 Uchar *mergeBlock ( Uchar *d, slSamplePlayer *spa,
520 slSamplePlayer *spc ) ;
522 void mixBuffer ( slSamplePlayer *a ) ;
523 void mixBuffer ( slSamplePlayer *a,
524 slSamplePlayer *b ) ;
525 void mixBuffer ( slSamplePlayer *a,
527 slSamplePlayer *c ) ;
529 Uchar mix ( Uchar a, Uchar b )
531 register int r = a + b - 0x80 ;
532 return ( r > 255 ) ? 255 :
536 Uchar mix ( Uchar a, Uchar b, Uchar c )
538 register int r = a + b + c - 0x80 - 0x80 ;
539 return ( r > 255 ) ? 255 :
543 void realUpdate ( int dump_first = SL_FALSE ) ;
545 void initBuffers () ;
549 static slScheduler *current ;
553 slScheduler ( int _rate = SL_DEFAULT_SAMPLING_RATE ) : slDSP ( _rate, SL_FALSE, 8 ) { init () ; }
554 slScheduler ( char *device,
555 int _rate = SL_DEFAULT_SAMPLING_RATE ) : slDSP ( device, _rate, SL_FALSE, 8 ) { init () ; }
558 static slScheduler *getCurrent () { return current ; }
560 int getTimeNow () { return now ; }
561 float getElapsedTime ( int then ) { return (float)(now-then)/(float)getRate() ; }
563 void flushCallBacks () ;
564 void addCallBack ( slCallBack c, slSample *s, slEvent e, int m ) ;
566 void update () { realUpdate ( SL_FALSE ) ; }
567 void dumpUpdate () { realUpdate ( SL_TRUE ) ; }
569 void addSampleEnvelope ( slSample *s = NULL, int magic = 0,
570 int slot = 1, slEnvelope *e = NULL,
571 slEnvelopeType t = SL_VOLUME_ENVELOPE )
573 for ( int i = 0 ; i < SL_MAX_SAMPLES ; i++ )
574 if ( samplePlayer [ i ] != NULL &&
575 ( s == NULL || samplePlayer [ i ] -> getSample () == s ) &&
576 ( magic == 0 || samplePlayer [ i ] -> getMagic () == magic ) )
577 samplePlayer [ i ] -> addEnvelope ( slot, e, t ) ;
580 void resumeSample ( slSample *s = NULL, int magic = 0 )
582 for ( int i = 0 ; i < SL_MAX_SAMPLES ; i++ )
583 if ( samplePlayer [ i ] != NULL &&
584 ( s == NULL || samplePlayer [ i ] -> getSample () == s ) &&
585 ( magic == 0 || samplePlayer [ i ] -> getMagic () == magic ) )
586 samplePlayer [ i ] -> resume () ;
589 void pauseSample ( slSample *s = NULL, int magic = 0 )
591 for ( int i = 0 ; i < SL_MAX_SAMPLES ; i++ )
592 if ( samplePlayer [ i ] != NULL &&
593 ( s == NULL || samplePlayer [ i ] -> getSample () == s ) &&
594 ( magic == 0 || samplePlayer [ i ] -> getMagic () == magic ) )
595 samplePlayer [ i ] -> pause () ;
598 void stopSample ( slSample *s = NULL, int magic = 0 )
600 for ( int i = 0 ; i < SL_MAX_SAMPLES ; i++ )
601 if ( samplePlayer [ i ] != NULL &&
602 ( s == NULL || samplePlayer [ i ] -> getSample () == s ) &&
603 ( magic == 0 || samplePlayer [ i ] -> getMagic () == magic ) )
604 samplePlayer [ i ] -> stop () ;
607 int loopSample ( slSample *s, int pri = 0, slPreemptMode mode = SL_SAMPLE_MUTE, int magic = 0, slCallBack cb = NULL )
609 for ( int i = 0 ; i < SL_MAX_SAMPLES ; i++ )
610 if ( samplePlayer [ i ] == NULL )
612 samplePlayer [ i ] = new slSamplePlayer ( s, SL_SAMPLE_LOOP, pri, mode, magic, cb ) ;
619 int playSample ( slSample *s, int pri = 1, slPreemptMode mode = SL_SAMPLE_ABORT, int magic = 0, slCallBack cb = NULL )
621 for ( int i = 0 ; i < SL_MAX_SAMPLES ; i++ )
622 if ( samplePlayer [ i ] == NULL )
624 samplePlayer [ i ] = new slSamplePlayer ( s, SL_SAMPLE_ONE_SHOT, pri, mode, magic, cb ) ;
631 void setSafetyMargin ( float seconds ) { safety_margin = seconds ; }