Line 0
Link Here
|
|
|
1 |
/* |
2 |
Copyright (C) 1994-1995 Apogee Software, Ltd. |
3 |
|
4 |
This program is free software; you can redistribute it and/or |
5 |
modify it under the terms of the GNU General Public License |
6 |
as published by the Free Software Foundation; either version 2 |
7 |
of the License, or (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. |
12 |
|
13 |
See the GNU General Public License for more details. |
14 |
|
15 |
ou should have received a copy of the GNU General Public License |
16 |
long with this program; if not, write to the Free Software |
17 |
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
18 |
|
19 |
*/ |
20 |
/********************************************************************** |
21 |
module: MULTIVOC.C |
22 |
|
23 |
author: James R. Dose |
24 |
date: December 20, 1993 |
25 |
|
26 |
Routines to provide multichannel digitized sound playback for |
27 |
Sound Blaster compatible sound cards. |
28 |
|
29 |
(c) Copyright 1993 James R. Dose. All Rights Reserved. |
30 |
**********************************************************************/ |
31 |
|
32 |
#include <stdio.h> |
33 |
#include <stdlib.h> |
34 |
#include <string.h> |
35 |
#include <time.h> |
36 |
|
37 |
#include "util.h" |
38 |
#include "dpmi.h" |
39 |
#include "usrhooks.h" |
40 |
#include "interrup.h" |
41 |
#include "dma.h" |
42 |
#include "linklist.h" |
43 |
#include "dsl.h" |
44 |
|
45 |
#include "pitch.h" |
46 |
#include "multivoc.h" |
47 |
#include "_multivc.h" |
48 |
#include "debugio.h" |
49 |
|
50 |
// platform.h is from the build engine, but I need the byteswapping macros... --ryan. |
51 |
#include "platform.h" |
52 |
|
53 |
#define RoundFixed( fixedval, bits ) \ |
54 |
( \ |
55 |
( \ |
56 |
(fixedval) + ( 1 << ( (bits) - 1 ) )\ |
57 |
) >> (bits) \ |
58 |
) |
59 |
|
60 |
#define IS_QUIET( ptr ) ( ( void * )( ptr ) == ( void * )&MV_VolumeTable[ 0 ] ) |
61 |
|
62 |
static int MV_ReverbLevel; |
63 |
static int MV_ReverbDelay; |
64 |
static VOLUME16 *MV_ReverbTable = NULL; |
65 |
|
66 |
//static signed short MV_VolumeTable[ MV_MaxVolume + 1 ][ 256 ]; |
67 |
static signed short MV_VolumeTable[ 63 + 1 ][ 256 ]; |
68 |
|
69 |
//static Pan MV_PanTable[ MV_NumPanPositions ][ MV_MaxVolume + 1 ]; |
70 |
static Pan MV_PanTable[ MV_NumPanPositions ][ 63 + 1 ]; |
71 |
|
72 |
static int MV_Installed = FALSE; |
73 |
static int MV_SoundCard = 1; |
74 |
static int MV_TotalVolume = MV_MaxTotalVolume; |
75 |
static int MV_MaxVoices = 1; |
76 |
static int MV_Recording; |
77 |
|
78 |
static int MV_BufferSize = MixBufferSize; |
79 |
static int MV_BufferLength; |
80 |
|
81 |
static int MV_NumberOfBuffers = NumberOfBuffers; |
82 |
|
83 |
static int MV_MixMode = MONO_8BIT; |
84 |
static int MV_Channels = 1; |
85 |
static int MV_Bits = 8; |
86 |
|
87 |
static int MV_Silence = SILENCE_8BIT; |
88 |
static int MV_SwapLeftRight = FALSE; |
89 |
|
90 |
static int MV_RequestedMixRate; |
91 |
static int MV_MixRate; |
92 |
|
93 |
static int MV_DMAChannel = -1; |
94 |
static int MV_BuffShift; |
95 |
|
96 |
static int MV_TotalMemory; |
97 |
|
98 |
static int MV_BufferDescriptor; |
99 |
static int MV_BufferEmpty[ NumberOfBuffers ]; |
100 |
char *MV_MixBuffer[ NumberOfBuffers + 1 ]; |
101 |
|
102 |
static VoiceNode *MV_Voices = NULL; |
103 |
|
104 |
static volatile VoiceNode VoiceList; |
105 |
static volatile VoiceNode VoicePool; |
106 |
|
107 |
/*static*/ int MV_MixPage = 0; |
108 |
static int MV_VoiceHandle = MV_MinVoiceHandle; |
109 |
|
110 |
static void ( *MV_CallBackFunc )( unsigned long ) = NULL; |
111 |
static void ( *MV_RecordFunc )( char *ptr, int length ) = NULL; |
112 |
static void ( *MV_MixFunction )( VoiceNode *voice, int buffer ); |
113 |
|
114 |
static int MV_MaxVolume = 63; |
115 |
|
116 |
char *MV_HarshClipTable; |
117 |
char *MV_MixDestination; |
118 |
short *MV_LeftVolume; |
119 |
short *MV_RightVolume; |
120 |
int MV_SampleSize = 1; |
121 |
int MV_RightChannelOffset; |
122 |
|
123 |
unsigned long MV_MixPosition; |
124 |
|
125 |
int MV_ErrorCode = MV_Ok; |
126 |
|
127 |
#define MV_SetErrorCode( status ) \ |
128 |
MV_ErrorCode = ( status ); |
129 |
|
130 |
|
131 |
/*--------------------------------------------------------------------- |
132 |
Function: MV_ErrorString |
133 |
|
134 |
Returns a pointer to the error message associated with an error |
135 |
number. A -1 returns a pointer the current error. |
136 |
---------------------------------------------------------------------*/ |
137 |
|
138 |
char *MV_ErrorString |
139 |
( |
140 |
int ErrorNumber |
141 |
) |
142 |
|
143 |
{ |
144 |
char *ErrorString; |
145 |
|
146 |
switch( ErrorNumber ) |
147 |
{ |
148 |
case MV_Warning : |
149 |
case MV_Error : |
150 |
ErrorString = MV_ErrorString( MV_ErrorCode ); |
151 |
break; |
152 |
|
153 |
case MV_Ok : |
154 |
ErrorString = "Multivoc ok."; |
155 |
break; |
156 |
|
157 |
case MV_UnsupportedCard : |
158 |
ErrorString = "Selected sound card is not supported by Multivoc."; |
159 |
break; |
160 |
|
161 |
case MV_NotInstalled : |
162 |
ErrorString = "Multivoc not installed."; |
163 |
break; |
164 |
|
165 |
case MV_NoVoices : |
166 |
ErrorString = "No free voices available to Multivoc."; |
167 |
break; |
168 |
|
169 |
case MV_NoMem : |
170 |
ErrorString = "Out of memory in Multivoc."; |
171 |
break; |
172 |
|
173 |
case MV_VoiceNotFound : |
174 |
ErrorString = "No voice with matching handle found."; |
175 |
break; |
176 |
|
177 |
case MV_DPMI_Error : |
178 |
ErrorString = "DPMI Error in Multivoc."; |
179 |
break; |
180 |
|
181 |
case MV_InvalidVOCFile : |
182 |
ErrorString = "Invalid VOC file passed in to Multivoc."; |
183 |
break; |
184 |
|
185 |
case MV_InvalidWAVFile : |
186 |
ErrorString = "Invalid WAV file passed in to Multivoc."; |
187 |
break; |
188 |
|
189 |
case MV_InvalidMixMode : |
190 |
ErrorString = "Invalid mix mode request in Multivoc."; |
191 |
break; |
192 |
|
193 |
case MV_IrqFailure : |
194 |
ErrorString = "Playback failed, possibly due to an invalid or conflicting IRQ."; |
195 |
break; |
196 |
|
197 |
case MV_DMAFailure : |
198 |
ErrorString = "Playback failed, possibly due to an invalid or conflicting DMA channel."; |
199 |
break; |
200 |
|
201 |
case MV_DMA16Failure : |
202 |
ErrorString = "Playback failed, possibly due to an invalid or conflicting DMA channel. \n" |
203 |
"Make sure the 16-bit DMA channel is correct."; |
204 |
break; |
205 |
|
206 |
case MV_NullRecordFunction : |
207 |
ErrorString = "Null record function passed to MV_StartRecording."; |
208 |
break; |
209 |
|
210 |
default : |
211 |
ErrorString = "Unknown Multivoc error code."; |
212 |
break; |
213 |
} |
214 |
|
215 |
return( ErrorString ); |
216 |
} |
217 |
|
218 |
|
219 |
/********************************************************************** |
220 |
|
221 |
Memory locked functions: |
222 |
|
223 |
**********************************************************************/ |
224 |
|
225 |
|
226 |
#define MV_LockStart MV_Mix |
227 |
|
228 |
|
229 |
/*--------------------------------------------------------------------- |
230 |
Function: MV_Mix |
231 |
|
232 |
Mixes the sound into the buffer. |
233 |
---------------------------------------------------------------------*/ |
234 |
|
235 |
static void MV_Mix |
236 |
( |
237 |
VoiceNode *voice, |
238 |
int buffer |
239 |
) |
240 |
|
241 |
{ |
242 |
char *start; |
243 |
int length; |
244 |
long voclength; |
245 |
unsigned long position; |
246 |
unsigned long rate; |
247 |
unsigned long FixedPointBufferSize; |
248 |
|
249 |
if ( ( voice->length == 0 ) && |
250 |
( voice->GetSound != NULL ) && |
251 |
( voice->GetSound( voice ) != KeepPlaying ) ) |
252 |
{ |
253 |
return; |
254 |
} |
255 |
|
256 |
length = MixBufferSize; |
257 |
FixedPointBufferSize = voice->FixedPointBufferSize; |
258 |
|
259 |
MV_MixDestination = MV_MixBuffer[ buffer ]; |
260 |
MV_LeftVolume = voice->LeftVolume; |
261 |
MV_RightVolume = voice->RightVolume; |
262 |
|
263 |
if ( ( MV_Channels == 2 ) && ( IS_QUIET( MV_LeftVolume ) ) ) |
264 |
{ |
265 |
MV_LeftVolume = MV_RightVolume; |
266 |
MV_MixDestination += MV_RightChannelOffset; |
267 |
} |
268 |
|
269 |
// Add this voice to the mix |
270 |
while( length > 0 ) |
271 |
{ |
272 |
start = voice->sound; |
273 |
rate = voice->RateScale; |
274 |
position = voice->position; |
275 |
|
276 |
// Check if the last sample in this buffer would be |
277 |
// beyond the length of the sample block |
278 |
if ( ( position + FixedPointBufferSize ) >= voice->length ) |
279 |
{ |
280 |
if ( position < voice->length ) |
281 |
{ |
282 |
voclength = ( voice->length - position + rate - 1 ) / rate; |
283 |
} |
284 |
else |
285 |
{ |
286 |
voice->GetSound( voice ); |
287 |
return; |
288 |
} |
289 |
} |
290 |
else |
291 |
{ |
292 |
voclength = length; |
293 |
} |
294 |
|
295 |
voice->mix( position, rate, start, voclength ); |
296 |
|
297 |
if ( voclength & 1 ) |
298 |
{ |
299 |
MV_MixPosition += rate; |
300 |
voclength -= 1; |
301 |
} |
302 |
voice->position = MV_MixPosition; |
303 |
|
304 |
length -= voclength; |
305 |
|
306 |
if ( voice->position >= voice->length ) |
307 |
{ |
308 |
// Get the next block of sound |
309 |
if ( voice->GetSound( voice ) != KeepPlaying ) |
310 |
{ |
311 |
return; |
312 |
} |
313 |
|
314 |
if ( length > 0 ) |
315 |
{ |
316 |
// Get the position of the last sample in the buffer |
317 |
FixedPointBufferSize = voice->RateScale * ( length - 1 ); |
318 |
} |
319 |
} |
320 |
} |
321 |
} |
322 |
|
323 |
|
324 |
/*--------------------------------------------------------------------- |
325 |
Function: MV_PlayVoice |
326 |
|
327 |
Adds a voice to the play list. |
328 |
---------------------------------------------------------------------*/ |
329 |
|
330 |
void MV_PlayVoice |
331 |
( |
332 |
VoiceNode *voice |
333 |
) |
334 |
|
335 |
{ |
336 |
unsigned flags; |
337 |
|
338 |
flags = DisableInterrupts(); |
339 |
LL_SortedInsertion( &VoiceList, voice, prev, next, VoiceNode, priority ); |
340 |
|
341 |
RestoreInterrupts( flags ); |
342 |
} |
343 |
|
344 |
|
345 |
/*--------------------------------------------------------------------- |
346 |
Function: MV_StopVoice |
347 |
|
348 |
Removes the voice from the play list and adds it to the free list. |
349 |
---------------------------------------------------------------------*/ |
350 |
|
351 |
void MV_StopVoice |
352 |
( |
353 |
VoiceNode *voice |
354 |
) |
355 |
|
356 |
{ |
357 |
unsigned flags; |
358 |
|
359 |
flags = DisableInterrupts(); |
360 |
|
361 |
// move the voice from the play list to the free list |
362 |
LL_Remove( voice, next, prev ); |
363 |
LL_Add( (VoiceNode *)&VoicePool, voice, next, prev ); |
364 |
|
365 |
RestoreInterrupts( flags ); |
366 |
} |
367 |
|
368 |
|
369 |
/*--------------------------------------------------------------------- |
370 |
Function: MV_ServiceVoc |
371 |
|
372 |
Starts playback of the waiting buffer and mixes the next one. |
373 |
---------------------------------------------------------------------*/ |
374 |
|
375 |
// static int backcolor = 1; |
376 |
|
377 |
static int MV_ServiceVoc(int dummy_arg) |
378 |
{ |
379 |
VoiceNode *voice; |
380 |
VoiceNode *next; |
381 |
char *buffer; |
382 |
|
383 |
// Toggle which buffer we'll mix next |
384 |
MV_MixPage++; |
385 |
if ( MV_MixPage >= MV_NumberOfBuffers ) |
386 |
{ |
387 |
MV_MixPage -= MV_NumberOfBuffers; |
388 |
} |
389 |
|
390 |
if ( MV_ReverbLevel == 0 ) |
391 |
{ |
392 |
// Initialize buffer |
393 |
//Commented out so that the buffer is always cleared. |
394 |
//This is so the guys at Echo Speech can mix into the |
395 |
//buffer even when no sounds are playing. |
396 |
//if ( !MV_BufferEmpty[ MV_MixPage ] ) |
397 |
{ |
398 |
ClearBuffer_DW( MV_MixBuffer[ MV_MixPage ], MV_Silence, MV_BufferSize >> 2 ); |
399 |
MV_BufferEmpty[ MV_MixPage ] = TRUE; |
400 |
} |
401 |
} |
402 |
else |
403 |
{ |
404 |
char *end; |
405 |
char *source; |
406 |
char *dest; |
407 |
int count; |
408 |
int length; |
409 |
|
410 |
end = MV_MixBuffer[ 0 ] + MV_BufferLength;; |
411 |
dest = MV_MixBuffer[ MV_MixPage ]; |
412 |
source = MV_MixBuffer[ MV_MixPage ] - MV_ReverbDelay; |
413 |
if ( source < MV_MixBuffer[ 0 ] ) |
414 |
{ |
415 |
source += MV_BufferLength; |
416 |
} |
417 |
|
418 |
length = MV_BufferSize; |
419 |
while( length > 0 ) |
420 |
{ |
421 |
count = length; |
422 |
if ( source + count > end ) |
423 |
{ |
424 |
count = end - source; |
425 |
} |
426 |
|
427 |
if ( MV_Bits == 16 ) |
428 |
{ |
429 |
if ( MV_ReverbTable != NULL ) |
430 |
MV_16BitReverb( source, dest, (const VOLUME16 *)MV_ReverbTable, count / 2 ); |
431 |
else |
432 |
MV_16BitReverbFast( source, dest, count / 2, MV_ReverbLevel ); |
433 |
} |
434 |
else |
435 |
{ |
436 |
if ( MV_ReverbTable != NULL ) |
437 |
MV_8BitReverb( source, dest, (const VOLUME16 *)MV_ReverbTable, count ); |
438 |
else |
439 |
MV_8BitReverbFast( source, dest, count, MV_ReverbLevel ); |
440 |
} |
441 |
|
442 |
// if we go through the loop again, it means that we've wrapped around the buffer |
443 |
source = MV_MixBuffer[ 0 ]; |
444 |
dest += count; |
445 |
length -= count; |
446 |
} |
447 |
} |
448 |
|
449 |
// Play any waiting voices |
450 |
for( voice = VoiceList.next; voice != &VoiceList; voice = next ) |
451 |
{ |
452 |
// if ( ( voice < &MV_Voices[ 0 ] ) || ( voice > &MV_Voices[ 8 ] ) ) |
453 |
// { |
454 |
// SetBorderColor(backcolor++); |
455 |
// break; |
456 |
// } |
457 |
|
458 |
MV_BufferEmpty[ MV_MixPage ] = FALSE; |
459 |
|
460 |
if (MV_MixFunction != NULL) |
461 |
MV_MixFunction( voice, MV_MixPage ); |
462 |
|
463 |
next = voice->next; |
464 |
|
465 |
// Is this voice done? |
466 |
if ( !voice->Playing ) |
467 |
{ |
468 |
MV_StopVoice( voice ); |
469 |
|
470 |
if ( MV_CallBackFunc ) |
471 |
{ |
472 |
MV_CallBackFunc( voice->callbackval ); |
473 |
} |
474 |
} |
475 |
} |
476 |
} |
477 |
|
478 |
|
479 |
int leftpage = -1; |
480 |
int rightpage = -1; |
481 |
|
482 |
void MV_ServiceGus( char **ptr, unsigned long *length ) |
483 |
{ |
484 |
if ( leftpage == MV_MixPage ) |
485 |
{ |
486 |
MV_ServiceVoc(0); |
487 |
} |
488 |
|
489 |
leftpage = MV_MixPage; |
490 |
|
491 |
*ptr = MV_MixBuffer[ MV_MixPage ]; |
492 |
*length = MV_BufferSize; |
493 |
} |
494 |
|
495 |
void MV_ServiceRightGus( char **ptr, unsigned long *length ) |
496 |
{ |
497 |
if ( rightpage == MV_MixPage ) |
498 |
{ |
499 |
MV_ServiceVoc(0); |
500 |
} |
501 |
|
502 |
rightpage = MV_MixPage; |
503 |
|
504 |
*ptr = MV_MixBuffer[ MV_MixPage ] + MV_RightChannelOffset; |
505 |
*length = MV_BufferSize; |
506 |
} |
507 |
|
508 |
/*--------------------------------------------------------------------- |
509 |
Function: MV_GetNextVOCBlock |
510 |
|
511 |
Interperate the information of a VOC format sound file. |
512 |
---------------------------------------------------------------------*/ |
513 |
static __inline unsigned int get_le32(void *p0) |
514 |
{ |
515 |
//unsigned char *p = p0; |
516 |
//return p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24); |
517 |
unsigned int val = *((unsigned int *) p0); |
518 |
return(BUILDSWAP_INTEL32(val)); |
519 |
} |
520 |
|
521 |
static __inline unsigned int get_le16(void *p0) |
522 |
{ |
523 |
//unsigned char *p = p0; |
524 |
//return p[0] | (p[1]<<8); |
525 |
unsigned short val = *((unsigned short *) p0); |
526 |
return( (unsigned int) (BUILDSWAP_INTEL16(val)) ); |
527 |
} |
528 |
|
529 |
playbackstatus MV_GetNextVOCBlock |
530 |
( |
531 |
VoiceNode *voice |
532 |
) |
533 |
|
534 |
{ |
535 |
unsigned char *ptr; |
536 |
int blocktype=0; |
537 |
int lastblocktype=0; |
538 |
unsigned long blocklength=0l; |
539 |
unsigned long samplespeed=0l; |
540 |
unsigned int tc=0; |
541 |
int packtype=0; |
542 |
int voicemode=0; |
543 |
int done=0; |
544 |
unsigned BitsPerSample; |
545 |
unsigned Channels; |
546 |
unsigned Format; |
547 |
|
548 |
if ( voice->BlockLength > 0 ) |
549 |
{ |
550 |
voice->position -= voice->length; |
551 |
voice->sound += voice->length >> 16; |
552 |
if ( voice->bits == 16 ) |
553 |
{ |
554 |
voice->sound += voice->length >> 16; |
555 |
} |
556 |
voice->length = min( voice->BlockLength, 0x8000 ); |
557 |
voice->BlockLength -= voice->length; |
558 |
voice->length <<= 16; |
559 |
return( KeepPlaying ); |
560 |
} |
561 |
|
562 |
if ( ( voice->length > 0 ) && ( voice->LoopEnd != NULL ) && |
563 |
( voice->LoopStart != NULL ) ) |
564 |
{ |
565 |
voice->BlockLength = voice->LoopSize; |
566 |
voice->sound = voice->LoopStart; |
567 |
voice->position = 0; |
568 |
voice->length = min( voice->BlockLength, 0x8000 ); |
569 |
voice->BlockLength -= voice->length; |
570 |
voice->length <<= 16; |
571 |
return( KeepPlaying ); |
572 |
} |
573 |
|
574 |
ptr = ( unsigned char * )voice->NextBlock; |
575 |
|
576 |
voice->Playing = TRUE; |
577 |
|
578 |
voicemode = 0; |
579 |
lastblocktype = 0; |
580 |
packtype = 0; |
581 |
|
582 |
done = FALSE; |
583 |
while( !done ) |
584 |
{ |
585 |
// Stop playing if we get a NULL pointer |
586 |
if ( ptr == NULL ) |
587 |
{ |
588 |
voice->Playing = FALSE; |
589 |
done = TRUE; |
590 |
break; |
591 |
} |
592 |
|
593 |
{ |
594 |
unsigned tmp = get_le32(ptr); |
595 |
blocktype = tmp&255; |
596 |
blocklength = tmp>>8; |
597 |
} |
598 |
ptr += 4; |
599 |
|
600 |
switch( blocktype ) |
601 |
{ |
602 |
case 0 : |
603 |
// End of data |
604 |
if ( ( voice->LoopStart == NULL ) || |
605 |
( (unsigned char *)voice->LoopStart >= ( ptr - 4 ) ) ) |
606 |
{ |
607 |
voice->Playing = FALSE; |
608 |
done = TRUE; |
609 |
} |
610 |
else |
611 |
{ |
612 |
voice->BlockLength = ( ptr - 4 ) - (unsigned char *)voice->LoopStart; |
613 |
voice->sound = voice->LoopStart; |
614 |
voice->position = 0; |
615 |
voice->length = min( voice->BlockLength, 0x8000 ); |
616 |
voice->BlockLength -= voice->length; |
617 |
voice->length <<= 16; |
618 |
return( KeepPlaying ); |
619 |
} |
620 |
break; |
621 |
|
622 |
case 1 : |
623 |
// Sound data block |
624 |
voice->bits = 8; |
625 |
if ( lastblocktype != 8 ) |
626 |
{ |
627 |
tc = ( unsigned int )*ptr << 8; |
628 |
packtype = *( ptr + 1 ); |
629 |
} |
630 |
|
631 |
ptr += 2; |
632 |
blocklength -= 2; |
633 |
|
634 |
samplespeed = 256000000L / ( 65536 - tc ); |
635 |
|
636 |
// Skip packed or stereo data |
637 |
if ( ( packtype != 0 ) || ( voicemode != 0 ) ) |
638 |
{ |
639 |
ptr += blocklength; |
640 |
} |
641 |
else |
642 |
{ |
643 |
done = TRUE; |
644 |
} |
645 |
voicemode = 0; |
646 |
break; |
647 |
|
648 |
case 2 : |
649 |
// Sound continuation block |
650 |
samplespeed = voice->SamplingRate; |
651 |
done = TRUE; |
652 |
break; |
653 |
|
654 |
case 3 : |
655 |
// Silence |
656 |
// Not implimented. |
657 |
ptr += blocklength; |
658 |
break; |
659 |
|
660 |
case 4 : |
661 |
// Marker |
662 |
// Not implimented. |
663 |
ptr += blocklength; |
664 |
break; |
665 |
|
666 |
case 5 : |
667 |
// ASCII string |
668 |
// Not implimented. |
669 |
ptr += blocklength; |
670 |
break; |
671 |
|
672 |
case 6 : |
673 |
// Repeat begin |
674 |
if ( voice->LoopEnd == NULL ) |
675 |
{ |
676 |
voice->LoopCount = get_le16(ptr); |
677 |
voice->LoopStart = ptr + blocklength; |
678 |
} |
679 |
ptr += blocklength; |
680 |
break; |
681 |
|
682 |
case 7 : |
683 |
// Repeat end |
684 |
ptr += blocklength; |
685 |
if ( lastblocktype == 6 ) |
686 |
{ |
687 |
voice->LoopCount = 0; |
688 |
} |
689 |
else |
690 |
{ |
691 |
if ( ( voice->LoopCount > 0 ) && ( voice->LoopStart != NULL ) ) |
692 |
{ |
693 |
ptr = voice->LoopStart; |
694 |
if ( voice->LoopCount < 0xffff ) |
695 |
{ |
696 |
voice->LoopCount--; |
697 |
if ( voice->LoopCount == 0 ) |
698 |
{ |
699 |
voice->LoopStart = NULL; |
700 |
} |
701 |
} |
702 |
} |
703 |
} |
704 |
break; |
705 |
|
706 |
case 8 : |
707 |
// Extended block |
708 |
voice->bits = 8; |
709 |
tc = get_le16(ptr); |
710 |
packtype = *( ptr + 2 ); |
711 |
voicemode = *( ptr + 3 ); |
712 |
ptr += blocklength; |
713 |
break; |
714 |
|
715 |
case 9 : |
716 |
// New sound data block |
717 |
samplespeed = get_le32(ptr); |
718 |
BitsPerSample = ptr[4]; |
719 |
Channels = ptr[5]; |
720 |
Format = get_le16(ptr+6); |
721 |
|
722 |
if ( ( BitsPerSample == 8 ) && ( Channels == 1 ) && |
723 |
( Format == VOC_8BIT ) ) |
724 |
{ |
725 |
ptr += 12; |
726 |
blocklength -= 12; |
727 |
voice->bits = 8; |
728 |
done = TRUE; |
729 |
} |
730 |
else if ( ( BitsPerSample == 16 ) && ( Channels == 1 ) && |
731 |
( Format == VOC_16BIT ) ) |
732 |
{ |
733 |
ptr += 12; |
734 |
blocklength -= 12; |
735 |
voice->bits = 16; |
736 |
done = TRUE; |
737 |
} |
738 |
else |
739 |
{ |
740 |
ptr += blocklength; |
741 |
} |
742 |
break; |
743 |
|
744 |
default : |
745 |
// Unknown data. Probably not a VOC file. |
746 |
voice->Playing = FALSE; |
747 |
done = TRUE; |
748 |
break; |
749 |
} |
750 |
|
751 |
lastblocktype = blocktype; |
752 |
} |
753 |
|
754 |
if ( voice->Playing ) |
755 |
{ |
756 |
voice->NextBlock = ptr + blocklength; |
757 |
voice->sound = ptr; |
758 |
|
759 |
voice->SamplingRate = samplespeed; |
760 |
voice->RateScale = ( voice->SamplingRate * voice->PitchScale ) / MV_MixRate; |
761 |
|
762 |
// Multiply by MixBufferSize - 1 |
763 |
voice->FixedPointBufferSize = ( voice->RateScale * MixBufferSize ) - |
764 |
voice->RateScale; |
765 |
|
766 |
if ( voice->LoopEnd != NULL ) |
767 |
{ |
768 |
if ( blocklength > ( unsigned long )voice->LoopEnd ) |
769 |
{ |
770 |
blocklength = ( unsigned long )voice->LoopEnd; |
771 |
} |
772 |
else |
773 |
{ |
774 |
voice->LoopEnd = ( char * )blocklength; |
775 |
} |
776 |
|
777 |
voice->LoopStart = voice->sound + ( unsigned long )voice->LoopStart; |
778 |
voice->LoopEnd = voice->sound + ( unsigned long )voice->LoopEnd; |
779 |
voice->LoopSize = voice->LoopEnd - voice->LoopStart; |
780 |
} |
781 |
|
782 |
if ( voice->bits == 16 ) |
783 |
{ |
784 |
blocklength /= 2; |
785 |
} |
786 |
|
787 |
voice->position = 0; |
788 |
voice->length = min( blocklength, 0x8000 ); |
789 |
voice->BlockLength = blocklength - voice->length; |
790 |
voice->length <<= 16; |
791 |
|
792 |
MV_SetVoiceMixMode( voice ); |
793 |
|
794 |
return( KeepPlaying ); |
795 |
} |
796 |
|
797 |
return( NoMoreData ); |
798 |
} |
799 |
|
800 |
|
801 |
/*--------------------------------------------------------------------- |
802 |
Function: MV_GetNextDemandFeedBlock |
803 |
|
804 |
Controls playback of demand fed data. |
805 |
---------------------------------------------------------------------*/ |
806 |
|
807 |
playbackstatus MV_GetNextDemandFeedBlock |
808 |
( |
809 |
VoiceNode *voice |
810 |
) |
811 |
|
812 |
{ |
813 |
if ( voice->BlockLength > 0 ) |
814 |
{ |
815 |
voice->position -= voice->length; |
816 |
voice->sound += voice->length >> 16; |
817 |
voice->length = min( voice->BlockLength, 0x8000 ); |
818 |
voice->BlockLength -= voice->length; |
819 |
voice->length <<= 16; |
820 |
|
821 |
return( KeepPlaying ); |
822 |
} |
823 |
|
824 |
if ( voice->DemandFeed == NULL ) |
825 |
{ |
826 |
return( NoMoreData ); |
827 |
} |
828 |
|
829 |
voice->position = 0; |
830 |
( voice->DemandFeed )( &voice->sound, &voice->BlockLength ); |
831 |
voice->length = min( voice->BlockLength, 0x8000 ); |
832 |
voice->BlockLength -= voice->length; |
833 |
voice->length <<= 16; |
834 |
|
835 |
if ( ( voice->length > 0 ) && ( voice->sound != NULL ) ) |
836 |
{ |
837 |
return( KeepPlaying ); |
838 |
} |
839 |
return( NoMoreData ); |
840 |
} |
841 |
|
842 |
|
843 |
/*--------------------------------------------------------------------- |
844 |
Function: MV_GetNextRawBlock |
845 |
|
846 |
Controls playback of demand fed data. |
847 |
---------------------------------------------------------------------*/ |
848 |
|
849 |
playbackstatus MV_GetNextRawBlock |
850 |
( |
851 |
VoiceNode *voice |
852 |
) |
853 |
|
854 |
{ |
855 |
if ( voice->BlockLength <= 0 ) |
856 |
{ |
857 |
if ( voice->LoopStart == NULL ) |
858 |
{ |
859 |
voice->Playing = FALSE; |
860 |
return( NoMoreData ); |
861 |
} |
862 |
|
863 |
voice->BlockLength = voice->LoopSize; |
864 |
voice->NextBlock = voice->LoopStart; |
865 |
voice->length = 0; |
866 |
voice->position = 0; |
867 |
} |
868 |
|
869 |
voice->sound = voice->NextBlock; |
870 |
voice->position -= voice->length; |
871 |
voice->length = min( voice->BlockLength, 0x8000 ); |
872 |
voice->NextBlock += voice->length; |
873 |
if ( voice->bits == 16 ) |
874 |
{ |
875 |
voice->NextBlock += voice->length; |
876 |
} |
877 |
voice->BlockLength -= voice->length; |
878 |
voice->length <<= 16; |
879 |
|
880 |
return( KeepPlaying ); |
881 |
} |
882 |
|
883 |
|
884 |
/*--------------------------------------------------------------------- |
885 |
Function: MV_GetNextWAVBlock |
886 |
|
887 |
Controls playback of demand fed data. |
888 |
---------------------------------------------------------------------*/ |
889 |
|
890 |
playbackstatus MV_GetNextWAVBlock |
891 |
( |
892 |
VoiceNode *voice |
893 |
) |
894 |
|
895 |
{ |
896 |
if ( voice->BlockLength <= 0 ) |
897 |
{ |
898 |
if ( voice->LoopStart == NULL ) |
899 |
{ |
900 |
voice->Playing = FALSE; |
901 |
return( NoMoreData ); |
902 |
} |
903 |
|
904 |
voice->BlockLength = voice->LoopSize; |
905 |
voice->NextBlock = voice->LoopStart; |
906 |
voice->length = 0; |
907 |
voice->position = 0; |
908 |
} |
909 |
|
910 |
voice->sound = voice->NextBlock; |
911 |
voice->position -= voice->length; |
912 |
voice->length = min( voice->BlockLength, 0x8000 ); |
913 |
voice->NextBlock += voice->length; |
914 |
if ( voice->bits == 16 ) |
915 |
{ |
916 |
voice->NextBlock += voice->length; |
917 |
} |
918 |
voice->BlockLength -= voice->length; |
919 |
voice->length <<= 16; |
920 |
|
921 |
return( KeepPlaying ); |
922 |
} |
923 |
|
924 |
|
925 |
/*--------------------------------------------------------------------- |
926 |
Function: MV_ServiceRecord |
927 |
|
928 |
Starts recording of the waiting buffer. |
929 |
---------------------------------------------------------------------*/ |
930 |
|
931 |
static void MV_ServiceRecord |
932 |
( |
933 |
void |
934 |
) |
935 |
|
936 |
{ |
937 |
if ( MV_RecordFunc ) |
938 |
{ |
939 |
MV_RecordFunc( MV_MixBuffer[ 0 ] + MV_MixPage * MixBufferSize, |
940 |
MixBufferSize ); |
941 |
} |
942 |
|
943 |
// Toggle which buffer we'll mix next |
944 |
MV_MixPage++; |
945 |
if ( MV_MixPage >= NumberOfBuffers ) |
946 |
{ |
947 |
MV_MixPage = 0; |
948 |
} |
949 |
} |
950 |
|
951 |
|
952 |
/*--------------------------------------------------------------------- |
953 |
Function: MV_GetVoice |
954 |
|
955 |
Locates the voice with the specified handle. |
956 |
---------------------------------------------------------------------*/ |
957 |
|
958 |
VoiceNode *MV_GetVoice |
959 |
( |
960 |
int handle |
961 |
) |
962 |
|
963 |
{ |
964 |
VoiceNode *voice; |
965 |
unsigned flags; |
966 |
|
967 |
flags = DisableInterrupts(); |
968 |
|
969 |
for( voice = VoiceList.next; voice != &VoiceList; voice = voice->next ) |
970 |
{ |
971 |
if ( handle == voice->handle ) |
972 |
{ |
973 |
break; |
974 |
} |
975 |
} |
976 |
|
977 |
RestoreInterrupts( flags ); |
978 |
|
979 |
if ( voice == &VoiceList ) |
980 |
{ |
981 |
MV_SetErrorCode( MV_VoiceNotFound ); |
982 |
|
983 |
// SBF - should this return null? |
984 |
return NULL; |
985 |
} |
986 |
|
987 |
return( voice ); |
988 |
} |
989 |
|
990 |
|
991 |
/*--------------------------------------------------------------------- |
992 |
Function: MV_VoicePlaying |
993 |
|
994 |
Checks if the voice associated with the specified handle is |
995 |
playing. |
996 |
---------------------------------------------------------------------*/ |
997 |
|
998 |
int MV_VoicePlaying |
999 |
( |
1000 |
int handle |
1001 |
) |
1002 |
|
1003 |
{ |
1004 |
VoiceNode *voice; |
1005 |
|
1006 |
if ( !MV_Installed ) |
1007 |
{ |
1008 |
MV_SetErrorCode( MV_NotInstalled ); |
1009 |
return( FALSE ); |
1010 |
} |
1011 |
|
1012 |
voice = MV_GetVoice( handle ); |
1013 |
|
1014 |
if ( voice == NULL ) |
1015 |
{ |
1016 |
return( FALSE ); |
1017 |
} |
1018 |
|
1019 |
return( TRUE ); |
1020 |
} |
1021 |
|
1022 |
|
1023 |
/*--------------------------------------------------------------------- |
1024 |
Function: MV_KillAllVoices |
1025 |
|
1026 |
Stops output of all currently active voices. |
1027 |
---------------------------------------------------------------------*/ |
1028 |
|
1029 |
int MV_KillAllVoices |
1030 |
( |
1031 |
void |
1032 |
) |
1033 |
|
1034 |
{ |
1035 |
if ( !MV_Installed ) |
1036 |
{ |
1037 |
MV_SetErrorCode( MV_NotInstalled ); |
1038 |
return( MV_Error ); |
1039 |
} |
1040 |
|
1041 |
// Remove all the voices from the list |
1042 |
while( VoiceList.next != &VoiceList ) |
1043 |
{ |
1044 |
MV_Kill( VoiceList.next->handle ); |
1045 |
} |
1046 |
|
1047 |
return( MV_Ok ); |
1048 |
} |
1049 |
|
1050 |
|
1051 |
/*--------------------------------------------------------------------- |
1052 |
Function: MV_Kill |
1053 |
|
1054 |
Stops output of the voice associated with the specified handle. |
1055 |
---------------------------------------------------------------------*/ |
1056 |
|
1057 |
int MV_Kill |
1058 |
( |
1059 |
int handle |
1060 |
) |
1061 |
|
1062 |
{ |
1063 |
VoiceNode *voice; |
1064 |
unsigned flags; |
1065 |
unsigned long callbackval; |
1066 |
|
1067 |
if ( !MV_Installed ) |
1068 |
{ |
1069 |
MV_SetErrorCode( MV_NotInstalled ); |
1070 |
return( MV_Error ); |
1071 |
} |
1072 |
|
1073 |
flags = DisableInterrupts(); |
1074 |
|
1075 |
voice = MV_GetVoice( handle ); |
1076 |
if ( voice == NULL ) |
1077 |
{ |
1078 |
RestoreInterrupts( flags ); |
1079 |
MV_SetErrorCode( MV_VoiceNotFound ); |
1080 |
return( MV_Error ); |
1081 |
} |
1082 |
|
1083 |
callbackval = voice->callbackval; |
1084 |
|
1085 |
MV_StopVoice( voice ); |
1086 |
|
1087 |
RestoreInterrupts( flags ); |
1088 |
|
1089 |
if ( MV_CallBackFunc ) |
1090 |
{ |
1091 |
MV_CallBackFunc( callbackval ); |
1092 |
} |
1093 |
|
1094 |
return( MV_Ok ); |
1095 |
} |
1096 |
|
1097 |
|
1098 |
/*--------------------------------------------------------------------- |
1099 |
Function: MV_VoicesPlaying |
1100 |
|
1101 |
Determines the number of currently active voices. |
1102 |
---------------------------------------------------------------------*/ |
1103 |
|
1104 |
int MV_VoicesPlaying |
1105 |
( |
1106 |
void |
1107 |
) |
1108 |
|
1109 |
{ |
1110 |
VoiceNode *voice; |
1111 |
int NumVoices = 0; |
1112 |
unsigned flags; |
1113 |
|
1114 |
if ( !MV_Installed ) |
1115 |
{ |
1116 |
MV_SetErrorCode( MV_NotInstalled ); |
1117 |
return( 0 ); |
1118 |
} |
1119 |
|
1120 |
flags = DisableInterrupts(); |
1121 |
|
1122 |
for( voice = VoiceList.next; voice != &VoiceList; voice = voice->next ) |
1123 |
{ |
1124 |
NumVoices++; |
1125 |
} |
1126 |
|
1127 |
RestoreInterrupts( flags ); |
1128 |
|
1129 |
return( NumVoices ); |
1130 |
} |
1131 |
|
1132 |
|
1133 |
/*--------------------------------------------------------------------- |
1134 |
Function: MV_AllocVoice |
1135 |
|
1136 |
Retrieve an inactive or lower priority voice for output. |
1137 |
---------------------------------------------------------------------*/ |
1138 |
|
1139 |
VoiceNode *MV_AllocVoice |
1140 |
( |
1141 |
int priority |
1142 |
) |
1143 |
|
1144 |
{ |
1145 |
VoiceNode *voice; |
1146 |
VoiceNode *node; |
1147 |
unsigned flags; |
1148 |
|
1149 |
//return( NULL ); |
1150 |
if ( MV_Recording ) |
1151 |
{ |
1152 |
return( NULL ); |
1153 |
} |
1154 |
|
1155 |
flags = DisableInterrupts(); |
1156 |
|
1157 |
// Check if we have any free voices |
1158 |
if ( LL_Empty( &VoicePool, next, prev ) ) |
1159 |
{ |
1160 |
// check if we have a higher priority than a voice that is playing. |
1161 |
voice = VoiceList.next; |
1162 |
for( node = voice->next; node != &VoiceList; node = node->next ) |
1163 |
{ |
1164 |
if ( node->priority < voice->priority ) |
1165 |
{ |
1166 |
voice = node; |
1167 |
} |
1168 |
} |
1169 |
|
1170 |
if ( priority >= voice->priority ) |
1171 |
{ |
1172 |
MV_Kill( voice->handle ); |
1173 |
} |
1174 |
} |
1175 |
|
1176 |
// Check if any voices are in the voice pool |
1177 |
if ( LL_Empty( &VoicePool, next, prev ) ) |
1178 |
{ |
1179 |
// No free voices |
1180 |
RestoreInterrupts( flags ); |
1181 |
return( NULL ); |
1182 |
} |
1183 |
|
1184 |
voice = VoicePool.next; |
1185 |
LL_Remove( voice, next, prev ); |
1186 |
RestoreInterrupts( flags ); |
1187 |
|
1188 |
// Find a free voice handle |
1189 |
do |
1190 |
{ |
1191 |
MV_VoiceHandle++; |
1192 |
if ( MV_VoiceHandle < MV_MinVoiceHandle ) |
1193 |
{ |
1194 |
MV_VoiceHandle = MV_MinVoiceHandle; |
1195 |
} |
1196 |
} |
1197 |
while( MV_VoicePlaying( MV_VoiceHandle ) ); |
1198 |
|
1199 |
voice->handle = MV_VoiceHandle; |
1200 |
|
1201 |
return( voice ); |
1202 |
} |
1203 |
|
1204 |
|
1205 |
/*--------------------------------------------------------------------- |
1206 |
Function: MV_VoiceAvailable |
1207 |
|
1208 |
Checks if a voice can be play at the specified priority. |
1209 |
---------------------------------------------------------------------*/ |
1210 |
|
1211 |
int MV_VoiceAvailable |
1212 |
( |
1213 |
int priority |
1214 |
) |
1215 |
|
1216 |
{ |
1217 |
VoiceNode *voice; |
1218 |
VoiceNode *node; |
1219 |
unsigned flags; |
1220 |
|
1221 |
// Check if we have any free voices |
1222 |
if ( !LL_Empty( &VoicePool, next, prev ) ) |
1223 |
{ |
1224 |
return( TRUE ); |
1225 |
} |
1226 |
|
1227 |
flags = DisableInterrupts(); |
1228 |
|
1229 |
// check if we have a higher priority than a voice that is playing. |
1230 |
voice = VoiceList.next; |
1231 |
for( node = VoiceList.next; node != &VoiceList; node = node->next ) |
1232 |
{ |
1233 |
if ( node->priority < voice->priority ) |
1234 |
{ |
1235 |
voice = node; |
1236 |
} |
1237 |
} |
1238 |
|
1239 |
RestoreInterrupts( flags ); |
1240 |
|
1241 |
if ( ( voice != &VoiceList ) && ( priority >= voice->priority ) ) |
1242 |
{ |
1243 |
return( TRUE ); |
1244 |
} |
1245 |
|
1246 |
return( FALSE ); |
1247 |
} |
1248 |
|
1249 |
|
1250 |
/*--------------------------------------------------------------------- |
1251 |
Function: MV_SetVoicePitch |
1252 |
|
1253 |
Sets the pitch for the specified voice. |
1254 |
---------------------------------------------------------------------*/ |
1255 |
|
1256 |
void MV_SetVoicePitch |
1257 |
( |
1258 |
VoiceNode *voice, |
1259 |
unsigned long rate, |
1260 |
int pitchoffset |
1261 |
) |
1262 |
|
1263 |
{ |
1264 |
voice->SamplingRate = rate; |
1265 |
voice->PitchScale = PITCH_GetScale( pitchoffset ); |
1266 |
voice->RateScale = ( rate * voice->PitchScale ) / MV_MixRate; |
1267 |
|
1268 |
// Multiply by MixBufferSize - 1 |
1269 |
voice->FixedPointBufferSize = ( voice->RateScale * MixBufferSize ) - |
1270 |
voice->RateScale; |
1271 |
} |
1272 |
|
1273 |
|
1274 |
/*--------------------------------------------------------------------- |
1275 |
Function: MV_SetPitch |
1276 |
|
1277 |
Sets the pitch for the voice associated with the specified handle. |
1278 |
---------------------------------------------------------------------*/ |
1279 |
|
1280 |
int MV_SetPitch |
1281 |
( |
1282 |
int handle, |
1283 |
int pitchoffset |
1284 |
) |
1285 |
|
1286 |
{ |
1287 |
VoiceNode *voice; |
1288 |
|
1289 |
if ( !MV_Installed ) |
1290 |
{ |
1291 |
MV_SetErrorCode( MV_NotInstalled ); |
1292 |
return( MV_Error ); |
1293 |
} |
1294 |
|
1295 |
voice = MV_GetVoice( handle ); |
1296 |
if ( voice == NULL ) |
1297 |
{ |
1298 |
MV_SetErrorCode( MV_VoiceNotFound ); |
1299 |
return( MV_Error ); |
1300 |
} |
1301 |
|
1302 |
MV_SetVoicePitch( voice, voice->SamplingRate, pitchoffset ); |
1303 |
|
1304 |
return( MV_Ok ); |
1305 |
} |
1306 |
|
1307 |
|
1308 |
/*--------------------------------------------------------------------- |
1309 |
Function: MV_SetFrequency |
1310 |
|
1311 |
Sets the frequency for the voice associated with the specified handle. |
1312 |
---------------------------------------------------------------------*/ |
1313 |
|
1314 |
int MV_SetFrequency |
1315 |
( |
1316 |
int handle, |
1317 |
int frequency |
1318 |
) |
1319 |
|
1320 |
{ |
1321 |
VoiceNode *voice; |
1322 |
|
1323 |
if ( !MV_Installed ) |
1324 |
{ |
1325 |
MV_SetErrorCode( MV_NotInstalled ); |
1326 |
return( MV_Error ); |
1327 |
} |
1328 |
|
1329 |
voice = MV_GetVoice( handle ); |
1330 |
if ( voice == NULL ) |
1331 |
{ |
1332 |
MV_SetErrorCode( MV_VoiceNotFound ); |
1333 |
return( MV_Error ); |
1334 |
} |
1335 |
|
1336 |
MV_SetVoicePitch( voice, frequency, 0 ); |
1337 |
|
1338 |
return( MV_Ok ); |
1339 |
} |
1340 |
|
1341 |
|
1342 |
/*--------------------------------------------------------------------- |
1343 |
Function: MV_GetVolumeTable |
1344 |
|
1345 |
Returns a pointer to the volume table associated with the specified |
1346 |
volume. |
1347 |
---------------------------------------------------------------------*/ |
1348 |
|
1349 |
static short *MV_GetVolumeTable |
1350 |
( |
1351 |
int vol |
1352 |
) |
1353 |
|
1354 |
{ |
1355 |
int volume; |
1356 |
short *table; |
1357 |
|
1358 |
volume = MIX_VOLUME( vol ); |
1359 |
|
1360 |
table = (short *)&MV_VolumeTable[ volume ]; |
1361 |
|
1362 |
return( table ); |
1363 |
} |
1364 |
|
1365 |
|
1366 |
/*--------------------------------------------------------------------- |
1367 |
Function: MV_SetVoiceMixMode |
1368 |
|
1369 |
Selects which method should be used to mix the voice. |
1370 |
---------------------------------------------------------------------*/ |
1371 |
|
1372 |
static void MV_SetVoiceMixMode |
1373 |
( |
1374 |
VoiceNode *voice |
1375 |
) |
1376 |
|
1377 |
{ |
1378 |
unsigned flags; |
1379 |
int test; |
1380 |
|
1381 |
flags = DisableInterrupts(); |
1382 |
|
1383 |
test = T_DEFAULT; |
1384 |
if ( MV_Bits == 8 ) |
1385 |
{ |
1386 |
test |= T_8BITS; |
1387 |
} |
1388 |
|
1389 |
if ( voice->bits == 16 ) |
1390 |
{ |
1391 |
test |= T_16BITSOURCE; |
1392 |
} |
1393 |
|
1394 |
if ( MV_Channels == 1 ) |
1395 |
{ |
1396 |
test |= T_MONO; |
1397 |
} |
1398 |
else |
1399 |
{ |
1400 |
if ( IS_QUIET( voice->RightVolume ) ) |
1401 |
{ |
1402 |
test |= T_RIGHTQUIET; |
1403 |
} |
1404 |
else if ( IS_QUIET( voice->LeftVolume ) ) |
1405 |
{ |
1406 |
test |= T_LEFTQUIET; |
1407 |
} |
1408 |
} |
1409 |
|
1410 |
// Default case |
1411 |
voice->mix = MV_Mix8BitMono; |
1412 |
|
1413 |
switch( test ) |
1414 |
{ |
1415 |
case T_8BITS | T_MONO | T_16BITSOURCE : |
1416 |
voice->mix = MV_Mix8BitMono16; |
1417 |
break; |
1418 |
|
1419 |
case T_8BITS | T_MONO : |
1420 |
voice->mix = MV_Mix8BitMono; |
1421 |
break; |
1422 |
|
1423 |
case T_8BITS | T_16BITSOURCE | T_LEFTQUIET : |
1424 |
MV_LeftVolume = MV_RightVolume; |
1425 |
voice->mix = MV_Mix8BitMono16; |
1426 |
break; |
1427 |
|
1428 |
case T_8BITS | T_LEFTQUIET : |
1429 |
MV_LeftVolume = MV_RightVolume; |
1430 |
voice->mix = MV_Mix8BitMono; |
1431 |
break; |
1432 |
|
1433 |
case T_8BITS | T_16BITSOURCE | T_RIGHTQUIET : |
1434 |
voice->mix = MV_Mix8BitMono16; |
1435 |
break; |
1436 |
|
1437 |
case T_8BITS | T_RIGHTQUIET : |
1438 |
voice->mix = MV_Mix8BitMono; |
1439 |
break; |
1440 |
|
1441 |
case T_8BITS | T_16BITSOURCE : |
1442 |
voice->mix = MV_Mix8BitStereo16; |
1443 |
break; |
1444 |
|
1445 |
case T_8BITS : |
1446 |
voice->mix = MV_Mix8BitStereo; |
1447 |
break; |
1448 |
|
1449 |
case T_MONO | T_16BITSOURCE : |
1450 |
voice->mix = MV_Mix16BitMono16; |
1451 |
break; |
1452 |
|
1453 |
case T_MONO : |
1454 |
voice->mix = MV_Mix16BitMono; |
1455 |
break; |
1456 |
|
1457 |
case T_16BITSOURCE | T_LEFTQUIET : |
1458 |
MV_LeftVolume = MV_RightVolume; |
1459 |
voice->mix = MV_Mix16BitMono16; |
1460 |
break; |
1461 |
|
1462 |
case T_LEFTQUIET : |
1463 |
MV_LeftVolume = MV_RightVolume; |
1464 |
voice->mix = MV_Mix16BitMono; |
1465 |
break; |
1466 |
|
1467 |
case T_16BITSOURCE | T_RIGHTQUIET : |
1468 |
voice->mix = MV_Mix16BitMono16; |
1469 |
break; |
1470 |
|
1471 |
case T_RIGHTQUIET : |
1472 |
voice->mix = MV_Mix16BitMono; |
1473 |
break; |
1474 |
|
1475 |
case T_16BITSOURCE : |
1476 |
voice->mix = MV_Mix16BitStereo16; |
1477 |
break; |
1478 |
|
1479 |
case T_SIXTEENBIT_STEREO : |
1480 |
voice->mix = MV_Mix16BitStereo; |
1481 |
break; |
1482 |
|
1483 |
default : |
1484 |
voice->mix = MV_Mix8BitMono; |
1485 |
} |
1486 |
|
1487 |
RestoreInterrupts( flags ); |
1488 |
} |
1489 |
|
1490 |
|
1491 |
/*--------------------------------------------------------------------- |
1492 |
Function: MV_SetVoiceVolume |
1493 |
|
1494 |
Sets the stereo and mono volume level of the voice associated |
1495 |
with the specified handle. |
1496 |
---------------------------------------------------------------------*/ |
1497 |
|
1498 |
void MV_SetVoiceVolume |
1499 |
( |
1500 |
VoiceNode *voice, |
1501 |
int vol, |
1502 |
int left, |
1503 |
int right |
1504 |
) |
1505 |
|
1506 |
{ |
1507 |
if ( MV_Channels == 1 ) |
1508 |
{ |
1509 |
left = vol; |
1510 |
right = vol; |
1511 |
} |
1512 |
|
1513 |
if ( MV_SwapLeftRight ) |
1514 |
{ |
1515 |
// SBPro uses reversed panning |
1516 |
voice->LeftVolume = MV_GetVolumeTable( right ); |
1517 |
voice->RightVolume = MV_GetVolumeTable( left ); |
1518 |
} |
1519 |
else |
1520 |
{ |
1521 |
voice->LeftVolume = MV_GetVolumeTable( left ); |
1522 |
voice->RightVolume = MV_GetVolumeTable( right ); |
1523 |
} |
1524 |
|
1525 |
MV_SetVoiceMixMode( voice ); |
1526 |
} |
1527 |
|
1528 |
|
1529 |
/*--------------------------------------------------------------------- |
1530 |
Function: MV_EndLooping |
1531 |
|
1532 |
Stops the voice associated with the specified handle from looping |
1533 |
without stoping the sound. |
1534 |
---------------------------------------------------------------------*/ |
1535 |
|
1536 |
int MV_EndLooping |
1537 |
( |
1538 |
int handle |
1539 |
) |
1540 |
|
1541 |
{ |
1542 |
VoiceNode *voice; |
1543 |
unsigned flags; |
1544 |
|
1545 |
if ( !MV_Installed ) |
1546 |
{ |
1547 |
MV_SetErrorCode( MV_NotInstalled ); |
1548 |
return( MV_Error ); |
1549 |
} |
1550 |
|
1551 |
flags = DisableInterrupts(); |
1552 |
|
1553 |
voice = MV_GetVoice( handle ); |
1554 |
if ( voice == NULL ) |
1555 |
{ |
1556 |
RestoreInterrupts( flags ); |
1557 |
MV_SetErrorCode( MV_VoiceNotFound ); |
1558 |
return( MV_Warning ); |
1559 |
} |
1560 |
|
1561 |
voice->LoopCount = 0; |
1562 |
voice->LoopStart = NULL; |
1563 |
voice->LoopEnd = NULL; |
1564 |
|
1565 |
RestoreInterrupts( flags ); |
1566 |
|
1567 |
return( MV_Ok ); |
1568 |
} |
1569 |
|
1570 |
|
1571 |
/*--------------------------------------------------------------------- |
1572 |
Function: MV_SetPan |
1573 |
|
1574 |
Sets the stereo and mono volume level of the voice associated |
1575 |
with the specified handle. |
1576 |
---------------------------------------------------------------------*/ |
1577 |
|
1578 |
int MV_SetPan |
1579 |
( |
1580 |
int handle, |
1581 |
int vol, |
1582 |
int left, |
1583 |
int right |
1584 |
) |
1585 |
|
1586 |
{ |
1587 |
VoiceNode *voice; |
1588 |
|
1589 |
if ( !MV_Installed ) |
1590 |
{ |
1591 |
MV_SetErrorCode( MV_NotInstalled ); |
1592 |
return( MV_Error ); |
1593 |
} |
1594 |
|
1595 |
voice = MV_GetVoice( handle ); |
1596 |
if ( voice == NULL ) |
1597 |
{ |
1598 |
MV_SetErrorCode( MV_VoiceNotFound ); |
1599 |
return( MV_Warning ); |
1600 |
} |
1601 |
|
1602 |
MV_SetVoiceVolume( voice, vol, left, right ); |
1603 |
|
1604 |
return( MV_Ok ); |
1605 |
} |
1606 |
|
1607 |
|
1608 |
/*--------------------------------------------------------------------- |
1609 |
Function: MV_Pan3D |
1610 |
|
1611 |
Set the angle and distance from the listener of the voice associated |
1612 |
with the specified handle. |
1613 |
---------------------------------------------------------------------*/ |
1614 |
|
1615 |
int MV_Pan3D |
1616 |
( |
1617 |
int handle, |
1618 |
int angle, |
1619 |
int distance |
1620 |
) |
1621 |
|
1622 |
{ |
1623 |
int left; |
1624 |
int right; |
1625 |
int mid; |
1626 |
int volume; |
1627 |
int status; |
1628 |
|
1629 |
if ( distance < 0 ) |
1630 |
{ |
1631 |
distance = -distance; |
1632 |
angle += MV_NumPanPositions / 2; |
1633 |
} |
1634 |
|
1635 |
volume = MIX_VOLUME( distance ); |
1636 |
|
1637 |
// Ensure angle is within 0 - 31 |
1638 |
angle &= MV_MaxPanPosition; |
1639 |
|
1640 |
left = MV_PanTable[ angle ][ volume ].left; |
1641 |
right = MV_PanTable[ angle ][ volume ].right; |
1642 |
mid = max( 0, 255 - distance ); |
1643 |
|
1644 |
status = MV_SetPan( handle, mid, left, right ); |
1645 |
|
1646 |
return( status ); |
1647 |
} |
1648 |
|
1649 |
|
1650 |
/*--------------------------------------------------------------------- |
1651 |
Function: MV_SetReverb |
1652 |
|
1653 |
Sets the level of reverb to add to mix. |
1654 |
---------------------------------------------------------------------*/ |
1655 |
|
1656 |
void MV_SetReverb |
1657 |
( |
1658 |
int reverb |
1659 |
) |
1660 |
|
1661 |
{ |
1662 |
MV_ReverbLevel = MIX_VOLUME( reverb ); |
1663 |
MV_ReverbTable = &MV_VolumeTable[ MV_ReverbLevel ]; |
1664 |
} |
1665 |
|
1666 |
|
1667 |
/*--------------------------------------------------------------------- |
1668 |
Function: MV_SetFastReverb |
1669 |
|
1670 |
Sets the level of reverb to add to mix. |
1671 |
---------------------------------------------------------------------*/ |
1672 |
|
1673 |
void MV_SetFastReverb |
1674 |
( |
1675 |
int reverb |
1676 |
) |
1677 |
|
1678 |
{ |
1679 |
MV_ReverbLevel = max( 0, min( 16, reverb ) ); |
1680 |
MV_ReverbTable = NULL; |
1681 |
} |
1682 |
|
1683 |
|
1684 |
/*--------------------------------------------------------------------- |
1685 |
Function: MV_GetMaxReverbDelay |
1686 |
|
1687 |
Returns the maximum delay time for reverb. |
1688 |
---------------------------------------------------------------------*/ |
1689 |
|
1690 |
int MV_GetMaxReverbDelay |
1691 |
( |
1692 |
void |
1693 |
) |
1694 |
|
1695 |
{ |
1696 |
int maxdelay; |
1697 |
|
1698 |
maxdelay = MixBufferSize * MV_NumberOfBuffers; |
1699 |
|
1700 |
return maxdelay; |
1701 |
} |
1702 |
|
1703 |
|
1704 |
/*--------------------------------------------------------------------- |
1705 |
Function: MV_GetReverbDelay |
1706 |
|
1707 |
Returns the current delay time for reverb. |
1708 |
---------------------------------------------------------------------*/ |
1709 |
|
1710 |
int MV_GetReverbDelay |
1711 |
( |
1712 |
void |
1713 |
) |
1714 |
|
1715 |
{ |
1716 |
return MV_ReverbDelay / MV_SampleSize; |
1717 |
} |
1718 |
|
1719 |
|
1720 |
/*--------------------------------------------------------------------- |
1721 |
Function: MV_SetReverbDelay |
1722 |
|
1723 |
Sets the delay level of reverb to add to mix. |
1724 |
---------------------------------------------------------------------*/ |
1725 |
|
1726 |
void MV_SetReverbDelay |
1727 |
( |
1728 |
int delay |
1729 |
) |
1730 |
|
1731 |
{ |
1732 |
int maxdelay; |
1733 |
|
1734 |
maxdelay = MV_GetMaxReverbDelay(); |
1735 |
MV_ReverbDelay = max( MixBufferSize, min( delay, maxdelay ) ); |
1736 |
MV_ReverbDelay *= MV_SampleSize; |
1737 |
} |
1738 |
|
1739 |
|
1740 |
/*--------------------------------------------------------------------- |
1741 |
Function: MV_SetMixMode |
1742 |
|
1743 |
Prepares Multivoc to play stereo of mono digitized sounds. |
1744 |
---------------------------------------------------------------------*/ |
1745 |
|
1746 |
int MV_SetMixMode |
1747 |
( |
1748 |
int numchannels, |
1749 |
int samplebits |
1750 |
) |
1751 |
|
1752 |
{ |
1753 |
int mode; |
1754 |
|
1755 |
if ( !MV_Installed ) |
1756 |
{ |
1757 |
MV_SetErrorCode( MV_NotInstalled ); |
1758 |
return( MV_Error ); |
1759 |
} |
1760 |
|
1761 |
mode = 0; |
1762 |
if ( numchannels == 2 ) |
1763 |
{ |
1764 |
mode |= STEREO; |
1765 |
} |
1766 |
if ( samplebits == 16 ) |
1767 |
{ |
1768 |
mode |= SIXTEEN_BIT; |
1769 |
} |
1770 |
|
1771 |
MV_MixMode = mode; |
1772 |
|
1773 |
MV_Channels = 1; |
1774 |
if ( MV_MixMode & STEREO ) |
1775 |
{ |
1776 |
MV_Channels = 2; |
1777 |
} |
1778 |
|
1779 |
MV_Bits = 8; |
1780 |
if ( MV_MixMode & SIXTEEN_BIT ) |
1781 |
{ |
1782 |
MV_Bits = 16; |
1783 |
} |
1784 |
|
1785 |
MV_BuffShift = 7 + MV_Channels; |
1786 |
MV_SampleSize = sizeof( MONO8 ) * MV_Channels; |
1787 |
|
1788 |
if ( MV_Bits == 8 ) |
1789 |
{ |
1790 |
MV_Silence = SILENCE_8BIT; |
1791 |
} |
1792 |
else |
1793 |
{ |
1794 |
MV_Silence = SILENCE_16BIT; |
1795 |
MV_BuffShift += 1; |
1796 |
MV_SampleSize *= 2; |
1797 |
} |
1798 |
|
1799 |
MV_BufferSize = MixBufferSize * MV_SampleSize; |
1800 |
MV_NumberOfBuffers = TotalBufferSize / MV_BufferSize; |
1801 |
MV_BufferLength = TotalBufferSize; |
1802 |
|
1803 |
MV_RightChannelOffset = MV_SampleSize / 2; |
1804 |
|
1805 |
return( MV_Ok ); |
1806 |
} |
1807 |
|
1808 |
|
1809 |
/*--------------------------------------------------------------------- |
1810 |
Function: MV_StartPlayback |
1811 |
|
1812 |
Starts the sound playback engine. |
1813 |
---------------------------------------------------------------------*/ |
1814 |
|
1815 |
int MV_StartPlayback |
1816 |
( |
1817 |
void |
1818 |
) |
1819 |
|
1820 |
{ |
1821 |
int status; |
1822 |
int buffer; |
1823 |
|
1824 |
// Initialize the buffers |
1825 |
ClearBuffer_DW( MV_MixBuffer[ 0 ], MV_Silence, TotalBufferSize >> 2 ); |
1826 |
for( buffer = 0; buffer < MV_NumberOfBuffers; buffer++ ) |
1827 |
{ |
1828 |
MV_BufferEmpty[ buffer ] = TRUE; |
1829 |
} |
1830 |
|
1831 |
// Set the mix buffer variables |
1832 |
MV_MixPage = 1; |
1833 |
|
1834 |
MV_MixFunction = MV_Mix; |
1835 |
|
1836 |
status = DSL_BeginBufferedPlayback( MV_MixBuffer[ 0 ], |
1837 |
TotalBufferSize, MV_NumberOfBuffers, |
1838 |
MV_RequestedMixRate, MV_MixMode, MV_ServiceVoc ); |
1839 |
|
1840 |
if ( status != DSL_Ok ) |
1841 |
{ |
1842 |
MV_SetErrorCode( MV_BlasterError ); |
1843 |
return( MV_Error ); |
1844 |
} |
1845 |
|
1846 |
MV_MixRate = DSL_GetPlaybackRate(); |
1847 |
|
1848 |
return( MV_Ok ); |
1849 |
} |
1850 |
|
1851 |
|
1852 |
/*--------------------------------------------------------------------- |
1853 |
Function: MV_StopPlayback |
1854 |
|
1855 |
Stops the sound playback engine. |
1856 |
---------------------------------------------------------------------*/ |
1857 |
|
1858 |
void MV_StopPlayback |
1859 |
( |
1860 |
void |
1861 |
) |
1862 |
|
1863 |
{ |
1864 |
VoiceNode *voice; |
1865 |
VoiceNode *next; |
1866 |
unsigned flags; |
1867 |
|
1868 |
DSL_StopPlayback(); |
1869 |
|
1870 |
// Make sure all callbacks are done. |
1871 |
flags = DisableInterrupts(); |
1872 |
|
1873 |
for( voice = VoiceList.next; voice != &VoiceList; voice = next ) |
1874 |
{ |
1875 |
next = voice->next; |
1876 |
|
1877 |
MV_StopVoice( voice ); |
1878 |
|
1879 |
if ( MV_CallBackFunc ) |
1880 |
{ |
1881 |
MV_CallBackFunc( voice->callbackval ); |
1882 |
} |
1883 |
} |
1884 |
|
1885 |
RestoreInterrupts( flags ); |
1886 |
} |
1887 |
|
1888 |
|
1889 |
/*--------------------------------------------------------------------- |
1890 |
Function: MV_StartRecording |
1891 |
|
1892 |
Starts the sound recording engine. |
1893 |
---------------------------------------------------------------------*/ |
1894 |
|
1895 |
int MV_StartRecording |
1896 |
( |
1897 |
int MixRate, |
1898 |
void ( *function )( char *ptr, int length ) |
1899 |
) |
1900 |
|
1901 |
{ |
1902 |
MV_SetErrorCode( MV_UnsupportedCard ); |
1903 |
return( MV_Error ); |
1904 |
} |
1905 |
|
1906 |
|
1907 |
/*--------------------------------------------------------------------- |
1908 |
Function: MV_StopRecord |
1909 |
|
1910 |
Stops the sound record engine. |
1911 |
---------------------------------------------------------------------*/ |
1912 |
|
1913 |
void MV_StopRecord |
1914 |
( |
1915 |
void |
1916 |
) |
1917 |
|
1918 |
{ |
1919 |
} |
1920 |
|
1921 |
|
1922 |
/*--------------------------------------------------------------------- |
1923 |
Function: MV_StartDemandFeedPlayback |
1924 |
|
1925 |
Plays a digitized sound from a user controlled buffering system. |
1926 |
---------------------------------------------------------------------*/ |
1927 |
|
1928 |
int MV_StartDemandFeedPlayback |
1929 |
( |
1930 |
void ( *function )( char **ptr, unsigned long *length ), |
1931 |
int rate, |
1932 |
int pitchoffset, |
1933 |
int vol, |
1934 |
int left, |
1935 |
int right, |
1936 |
int priority, |
1937 |
unsigned long callbackval |
1938 |
) |
1939 |
|
1940 |
{ |
1941 |
VoiceNode *voice; |
1942 |
|
1943 |
if ( !MV_Installed ) |
1944 |
{ |
1945 |
MV_SetErrorCode( MV_NotInstalled ); |
1946 |
return( MV_Error ); |
1947 |
} |
1948 |
|
1949 |
// Request a voice from the voice pool |
1950 |
voice = MV_AllocVoice( priority ); |
1951 |
if ( voice == NULL ) |
1952 |
{ |
1953 |
MV_SetErrorCode( MV_NoVoices ); |
1954 |
return( MV_Error ); |
1955 |
} |
1956 |
|
1957 |
voice->wavetype = DemandFeed; |
1958 |
voice->bits = 8; |
1959 |
voice->GetSound = MV_GetNextDemandFeedBlock; |
1960 |
voice->NextBlock = NULL; |
1961 |
voice->DemandFeed = function; |
1962 |
voice->LoopStart = NULL; |
1963 |
voice->LoopCount = 0; |
1964 |
voice->BlockLength = 0; |
1965 |
voice->position = 0; |
1966 |
voice->sound = NULL; |
1967 |
voice->length = 0; |
1968 |
voice->BlockLength = 0; |
1969 |
voice->Playing = TRUE; |
1970 |
voice->next = NULL; |
1971 |
voice->prev = NULL; |
1972 |
voice->priority = priority; |
1973 |
voice->callbackval = callbackval; |
1974 |
|
1975 |
MV_SetVoicePitch( voice, rate, pitchoffset ); |
1976 |
MV_SetVoiceVolume( voice, vol, left, right ); |
1977 |
MV_PlayVoice( voice ); |
1978 |
|
1979 |
return( voice->handle ); |
1980 |
} |
1981 |
|
1982 |
|
1983 |
/*--------------------------------------------------------------------- |
1984 |
Function: MV_PlayRaw |
1985 |
|
1986 |
Begin playback of sound data with the given sound levels and |
1987 |
priority. |
1988 |
---------------------------------------------------------------------*/ |
1989 |
|
1990 |
int MV_PlayRaw |
1991 |
( |
1992 |
char *ptr, |
1993 |
unsigned long length, |
1994 |
unsigned rate, |
1995 |
int pitchoffset, |
1996 |
int vol, |
1997 |
int left, |
1998 |
int right, |
1999 |
int priority, |
2000 |
unsigned long callbackval |
2001 |
) |
2002 |
|
2003 |
{ |
2004 |
int status; |
2005 |
|
2006 |
status = MV_PlayLoopedRaw( ptr, length, NULL, NULL, rate, pitchoffset, |
2007 |
vol, left, right, priority, callbackval ); |
2008 |
|
2009 |
return( status ); |
2010 |
} |
2011 |
|
2012 |
|
2013 |
/*--------------------------------------------------------------------- |
2014 |
Function: MV_PlayLoopedRaw |
2015 |
|
2016 |
Begin playback of sound data with the given sound levels and |
2017 |
priority. |
2018 |
---------------------------------------------------------------------*/ |
2019 |
|
2020 |
int MV_PlayLoopedRaw |
2021 |
( |
2022 |
char *ptr, |
2023 |
long length, |
2024 |
char *loopstart, |
2025 |
char *loopend, |
2026 |
unsigned rate, |
2027 |
int pitchoffset, |
2028 |
int vol, |
2029 |
int left, |
2030 |
int right, |
2031 |
int priority, |
2032 |
unsigned long callbackval |
2033 |
) |
2034 |
|
2035 |
{ |
2036 |
VoiceNode *voice; |
2037 |
|
2038 |
if ( !MV_Installed ) |
2039 |
{ |
2040 |
MV_SetErrorCode( MV_NotInstalled ); |
2041 |
return( MV_Error ); |
2042 |
} |
2043 |
|
2044 |
// Request a voice from the voice pool |
2045 |
voice = MV_AllocVoice( priority ); |
2046 |
if ( voice == NULL ) |
2047 |
{ |
2048 |
MV_SetErrorCode( MV_NoVoices ); |
2049 |
return( MV_Error ); |
2050 |
} |
2051 |
|
2052 |
voice->wavetype = Raw; |
2053 |
voice->bits = 8; |
2054 |
voice->GetSound = MV_GetNextRawBlock; |
2055 |
voice->Playing = TRUE; |
2056 |
voice->NextBlock = ptr; |
2057 |
voice->position = 0; |
2058 |
voice->BlockLength = length; |
2059 |
voice->length = 0; |
2060 |
voice->next = NULL; |
2061 |
voice->prev = NULL; |
2062 |
voice->priority = priority; |
2063 |
voice->callbackval = callbackval; |
2064 |
voice->LoopStart = loopstart; |
2065 |
voice->LoopEnd = loopend; |
2066 |
voice->LoopSize = ( voice->LoopEnd - voice->LoopStart ) + 1; |
2067 |
|
2068 |
MV_SetVoicePitch( voice, rate, pitchoffset ); |
2069 |
MV_SetVoiceVolume( voice, vol, left, right ); |
2070 |
MV_PlayVoice( voice ); |
2071 |
|
2072 |
return( voice->handle ); |
2073 |
} |
2074 |
|
2075 |
|
2076 |
/*--------------------------------------------------------------------- |
2077 |
Function: MV_PlayWAV |
2078 |
|
2079 |
Begin playback of sound data with the given sound levels and |
2080 |
priority. |
2081 |
---------------------------------------------------------------------*/ |
2082 |
|
2083 |
int MV_PlayWAV |
2084 |
( |
2085 |
char *ptr, |
2086 |
int pitchoffset, |
2087 |
int vol, |
2088 |
int left, |
2089 |
int right, |
2090 |
int priority, |
2091 |
unsigned long callbackval |
2092 |
) |
2093 |
|
2094 |
{ |
2095 |
int status; |
2096 |
|
2097 |
status = MV_PlayLoopedWAV( ptr, -1, -1, pitchoffset, vol, left, right, |
2098 |
priority, callbackval ); |
2099 |
|
2100 |
return( status ); |
2101 |
} |
2102 |
|
2103 |
|
2104 |
/*--------------------------------------------------------------------- |
2105 |
Function: MV_PlayWAV3D |
2106 |
|
2107 |
Begin playback of sound data at specified angle and distance |
2108 |
from listener. |
2109 |
---------------------------------------------------------------------*/ |
2110 |
|
2111 |
int MV_PlayWAV3D |
2112 |
( |
2113 |
char *ptr, |
2114 |
int pitchoffset, |
2115 |
int angle, |
2116 |
int distance, |
2117 |
int priority, |
2118 |
unsigned long callbackval |
2119 |
) |
2120 |
|
2121 |
{ |
2122 |
int left; |
2123 |
int right; |
2124 |
int mid; |
2125 |
int volume; |
2126 |
int status; |
2127 |
|
2128 |
if ( !MV_Installed ) |
2129 |
{ |
2130 |
MV_SetErrorCode( MV_NotInstalled ); |
2131 |
return( MV_Error ); |
2132 |
} |
2133 |
|
2134 |
if ( distance < 0 ) |
2135 |
{ |
2136 |
distance = -distance; |
2137 |
angle += MV_NumPanPositions / 2; |
2138 |
} |
2139 |
|
2140 |
volume = MIX_VOLUME( distance ); |
2141 |
|
2142 |
// Ensure angle is within 0 - 31 |
2143 |
angle &= MV_MaxPanPosition; |
2144 |
|
2145 |
left = MV_PanTable[ angle ][ volume ].left; |
2146 |
right = MV_PanTable[ angle ][ volume ].right; |
2147 |
mid = max( 0, 255 - distance ); |
2148 |
|
2149 |
status = MV_PlayWAV( ptr, pitchoffset, mid, left, right, priority, |
2150 |
callbackval ); |
2151 |
|
2152 |
return( status ); |
2153 |
} |
2154 |
|
2155 |
|
2156 |
/*--------------------------------------------------------------------- |
2157 |
Function: MV_PlayLoopedWAV |
2158 |
|
2159 |
Begin playback of sound data with the given sound levels and |
2160 |
priority. |
2161 |
---------------------------------------------------------------------*/ |
2162 |
|
2163 |
int MV_PlayLoopedWAV |
2164 |
( |
2165 |
char *ptr, |
2166 |
long loopstart, |
2167 |
long loopend, |
2168 |
int pitchoffset, |
2169 |
int vol, |
2170 |
int left, |
2171 |
int right, |
2172 |
int priority, |
2173 |
unsigned long callbackval |
2174 |
) |
2175 |
|
2176 |
{ |
2177 |
riff_header *riff; |
2178 |
format_header *format; |
2179 |
data_header *data; |
2180 |
VoiceNode *voice; |
2181 |
int length; |
2182 |
int absloopend; |
2183 |
int absloopstart; |
2184 |
|
2185 |
if ( !MV_Installed ) |
2186 |
{ |
2187 |
MV_SetErrorCode( MV_NotInstalled ); |
2188 |
return( MV_Error ); |
2189 |
} |
2190 |
|
2191 |
riff = ( riff_header * )ptr; |
2192 |
|
2193 |
if ( ( strncmp( riff->RIFF, "RIFF", 4 ) != 0 ) || |
2194 |
( strncmp( riff->WAVE, "WAVE", 4 ) != 0 ) || |
2195 |
( strncmp( riff->fmt, "fmt ", 4) != 0 ) ) |
2196 |
{ |
2197 |
MV_SetErrorCode( MV_InvalidWAVFile ); |
2198 |
return( MV_Error ); |
2199 |
} |
2200 |
|
2201 |
format = ( format_header * )( riff + 1 ); |
2202 |
data = ( data_header * )( ( ( char * )format ) + riff->format_size ); |
2203 |
|
2204 |
// Check if it's PCM data. |
2205 |
if ( format->wFormatTag != 1 ) |
2206 |
{ |
2207 |
MV_SetErrorCode( MV_InvalidWAVFile ); |
2208 |
return( MV_Error ); |
2209 |
} |
2210 |
|
2211 |
if ( format->nChannels != 1 ) |
2212 |
{ |
2213 |
MV_SetErrorCode( MV_InvalidWAVFile ); |
2214 |
return( MV_Error ); |
2215 |
} |
2216 |
|
2217 |
if ( ( format->nBitsPerSample != 8 ) && |
2218 |
( format->nBitsPerSample != 16 ) ) |
2219 |
{ |
2220 |
MV_SetErrorCode( MV_InvalidWAVFile ); |
2221 |
return( MV_Error ); |
2222 |
} |
2223 |
|
2224 |
if ( strncmp( data->DATA, "data", 4 ) != 0 ) |
2225 |
{ |
2226 |
MV_SetErrorCode( MV_InvalidWAVFile ); |
2227 |
return( MV_Error ); |
2228 |
} |
2229 |
|
2230 |
// Request a voice from the voice pool |
2231 |
voice = MV_AllocVoice( priority ); |
2232 |
if ( voice == NULL ) |
2233 |
{ |
2234 |
MV_SetErrorCode( MV_NoVoices ); |
2235 |
return( MV_Error ); |
2236 |
} |
2237 |
|
2238 |
voice->wavetype = WAV; |
2239 |
voice->bits = format->nBitsPerSample; |
2240 |
voice->GetSound = MV_GetNextWAVBlock; |
2241 |
|
2242 |
length = data->size; |
2243 |
absloopstart = loopstart; |
2244 |
absloopend = loopend; |
2245 |
if ( voice->bits == 16 ) |
2246 |
{ |
2247 |
loopstart *= 2; |
2248 |
data->size &= ~1; |
2249 |
loopend *= 2; |
2250 |
length /= 2; |
2251 |
} |
2252 |
|
2253 |
loopend = min( loopend, (long)data->size ); |
2254 |
absloopend = min( absloopend, length ); |
2255 |
|
2256 |
voice->Playing = TRUE; |
2257 |
voice->DemandFeed = NULL; |
2258 |
voice->LoopStart = NULL; |
2259 |
voice->LoopCount = 0; |
2260 |
voice->position = 0; |
2261 |
voice->length = 0; |
2262 |
voice->BlockLength = absloopend; |
2263 |
voice->NextBlock = ( char * )( data + 1 ); |
2264 |
voice->next = NULL; |
2265 |
voice->prev = NULL; |
2266 |
voice->priority = priority; |
2267 |
voice->callbackval = callbackval; |
2268 |
voice->LoopStart = voice->NextBlock + loopstart; |
2269 |
voice->LoopEnd = voice->NextBlock + loopend; |
2270 |
voice->LoopSize = absloopend - absloopstart; |
2271 |
|
2272 |
if ( ( loopstart >= (long)data->size ) || ( loopstart < 0 ) ) |
2273 |
{ |
2274 |
voice->LoopStart = NULL; |
2275 |
voice->LoopEnd = NULL; |
2276 |
voice->BlockLength = length; |
2277 |
} |
2278 |
|
2279 |
MV_SetVoicePitch( voice, format->nSamplesPerSec, pitchoffset ); |
2280 |
MV_SetVoiceVolume( voice, vol, left, right ); |
2281 |
MV_PlayVoice( voice ); |
2282 |
|
2283 |
return( voice->handle ); |
2284 |
} |
2285 |
|
2286 |
|
2287 |
/*--------------------------------------------------------------------- |
2288 |
Function: MV_PlayVOC3D |
2289 |
|
2290 |
Begin playback of sound data at specified angle and distance |
2291 |
from listener. |
2292 |
---------------------------------------------------------------------*/ |
2293 |
|
2294 |
int MV_PlayVOC3D |
2295 |
( |
2296 |
char *ptr, |
2297 |
int pitchoffset, |
2298 |
int angle, |
2299 |
int distance, |
2300 |
int priority, |
2301 |
unsigned long callbackval |
2302 |
) |
2303 |
|
2304 |
{ |
2305 |
int left; |
2306 |
int right; |
2307 |
int mid; |
2308 |
int volume; |
2309 |
int status; |
2310 |
|
2311 |
if ( !MV_Installed ) |
2312 |
{ |
2313 |
MV_SetErrorCode( MV_NotInstalled ); |
2314 |
return( MV_Error ); |
2315 |
} |
2316 |
|
2317 |
if ( distance < 0 ) |
2318 |
{ |
2319 |
distance = -distance; |
2320 |
angle += MV_NumPanPositions / 2; |
2321 |
} |
2322 |
|
2323 |
volume = MIX_VOLUME( distance ); |
2324 |
|
2325 |
// Ensure angle is within 0 - 31 |
2326 |
angle &= MV_MaxPanPosition; |
2327 |
|
2328 |
left = MV_PanTable[ angle ][ volume ].left; |
2329 |
right = MV_PanTable[ angle ][ volume ].right; |
2330 |
mid = max( 0, 255 - distance ); |
2331 |
|
2332 |
status = MV_PlayVOC( ptr, pitchoffset, mid, left, right, priority, |
2333 |
callbackval ); |
2334 |
|
2335 |
return( status ); |
2336 |
} |
2337 |
|
2338 |
|
2339 |
/*--------------------------------------------------------------------- |
2340 |
Function: MV_PlayVOC |
2341 |
|
2342 |
Begin playback of sound data with the given sound levels and |
2343 |
priority. |
2344 |
---------------------------------------------------------------------*/ |
2345 |
|
2346 |
int MV_PlayVOC |
2347 |
( |
2348 |
char *ptr, |
2349 |
int pitchoffset, |
2350 |
int vol, |
2351 |
int left, |
2352 |
int right, |
2353 |
int priority, |
2354 |
unsigned long callbackval |
2355 |
) |
2356 |
|
2357 |
{ |
2358 |
int status; |
2359 |
|
2360 |
status = MV_PlayLoopedVOC( ptr, -1, -1, pitchoffset, vol, left, right, |
2361 |
priority, callbackval ); |
2362 |
|
2363 |
return( status ); |
2364 |
} |
2365 |
|
2366 |
|
2367 |
/*--------------------------------------------------------------------- |
2368 |
Function: MV_PlayLoopedVOC |
2369 |
|
2370 |
Begin playback of sound data with the given sound levels and |
2371 |
priority. |
2372 |
---------------------------------------------------------------------*/ |
2373 |
|
2374 |
int MV_PlayLoopedVOC |
2375 |
( |
2376 |
char *ptr, |
2377 |
long loopstart, |
2378 |
long loopend, |
2379 |
int pitchoffset, |
2380 |
int vol, |
2381 |
int left, |
2382 |
int right, |
2383 |
int priority, |
2384 |
unsigned long callbackval |
2385 |
) |
2386 |
|
2387 |
{ |
2388 |
VoiceNode *voice; |
2389 |
int status; |
2390 |
unsigned short nextpos; |
2391 |
|
2392 |
if ( !MV_Installed ) |
2393 |
{ |
2394 |
MV_SetErrorCode( MV_NotInstalled ); |
2395 |
return( MV_Error ); |
2396 |
} |
2397 |
|
2398 |
// Make sure it's a valid VOC file. |
2399 |
status = strncmp( ptr, "Creative Voice File", 19 ); |
2400 |
if ( status != 0 ) |
2401 |
{ |
2402 |
MV_SetErrorCode( MV_InvalidVOCFile ); |
2403 |
return( MV_Error ); |
2404 |
} |
2405 |
|
2406 |
// Request a voice from the voice pool |
2407 |
voice = MV_AllocVoice( priority ); |
2408 |
if ( voice == NULL ) |
2409 |
{ |
2410 |
MV_SetErrorCode( MV_NoVoices ); |
2411 |
return( MV_Error ); |
2412 |
} |
2413 |
|
2414 |
voice->wavetype = VOC; |
2415 |
voice->bits = 8; |
2416 |
voice->GetSound = MV_GetNextVOCBlock; |
2417 |
|
2418 |
nextpos = *( unsigned short * )( ptr + 0x14 ); |
2419 |
voice->NextBlock = ptr + BUILDSWAP_INTEL16(nextpos); |
2420 |
|
2421 |
voice->DemandFeed = NULL; |
2422 |
voice->LoopStart = NULL; |
2423 |
voice->LoopCount = 0; |
2424 |
voice->BlockLength = 0; |
2425 |
voice->PitchScale = PITCH_GetScale( pitchoffset ); |
2426 |
voice->length = 0; |
2427 |
voice->next = NULL; |
2428 |
voice->prev = NULL; |
2429 |
voice->priority = priority; |
2430 |
voice->callbackval = callbackval; |
2431 |
voice->LoopStart = ( char * )loopstart; |
2432 |
voice->LoopEnd = ( char * )loopend; |
2433 |
voice->LoopSize = loopend - loopstart + 1; |
2434 |
|
2435 |
if ( loopstart < 0 ) |
2436 |
{ |
2437 |
voice->LoopStart = NULL; |
2438 |
voice->LoopEnd = NULL; |
2439 |
} |
2440 |
|
2441 |
MV_SetVoiceVolume( voice, vol, left, right ); |
2442 |
MV_PlayVoice( voice ); |
2443 |
|
2444 |
return( voice->handle ); |
2445 |
} |
2446 |
|
2447 |
|
2448 |
/*--------------------------------------------------------------------- |
2449 |
Function: MV_LockEnd |
2450 |
|
2451 |
Used for determining the length of the functions to lock in memory. |
2452 |
---------------------------------------------------------------------*/ |
2453 |
|
2454 |
static void MV_LockEnd |
2455 |
( |
2456 |
void |
2457 |
) |
2458 |
|
2459 |
{ |
2460 |
} |
2461 |
|
2462 |
|
2463 |
/*--------------------------------------------------------------------- |
2464 |
Function: MV_CreateVolumeTable |
2465 |
|
2466 |
Create the table used to convert sound data to a specific volume |
2467 |
level. |
2468 |
---------------------------------------------------------------------*/ |
2469 |
|
2470 |
void MV_CreateVolumeTable |
2471 |
( |
2472 |
int index, |
2473 |
int volume, |
2474 |
int MaxVolume |
2475 |
) |
2476 |
|
2477 |
{ |
2478 |
int val; |
2479 |
int level; |
2480 |
int i; |
2481 |
|
2482 |
level = ( volume * MaxVolume ) / MV_MaxTotalVolume; |
2483 |
if ( MV_Bits == 16 ) |
2484 |
{ |
2485 |
for( i = 0; i < 65536; i += 256 ) |
2486 |
{ |
2487 |
val = i - 0x8000; |
2488 |
val *= level; |
2489 |
val /= MV_MaxVolume; |
2490 |
MV_VolumeTable[ index ][ i / 256 ] = val; |
2491 |
} |
2492 |
} |
2493 |
else |
2494 |
{ |
2495 |
for( i = 0; i < 256; i++ ) |
2496 |
{ |
2497 |
val = i - 0x80; |
2498 |
val *= level; |
2499 |
val /= MV_MaxVolume; |
2500 |
MV_VolumeTable[ volume ][ i ] = val; |
2501 |
} |
2502 |
} |
2503 |
} |
2504 |
|
2505 |
|
2506 |
/*--------------------------------------------------------------------- |
2507 |
Function: MV_CalcVolume |
2508 |
|
2509 |
Create the table used to convert sound data to a specific volume |
2510 |
level. |
2511 |
---------------------------------------------------------------------*/ |
2512 |
|
2513 |
void MV_CalcVolume |
2514 |
( |
2515 |
int MaxVolume |
2516 |
) |
2517 |
|
2518 |
{ |
2519 |
int volume; |
2520 |
|
2521 |
for( volume = 0; volume < 128; volume++ ) |
2522 |
{ |
2523 |
MV_HarshClipTable[ volume ] = 0; |
2524 |
MV_HarshClipTable[ volume + 384 ] = 255; |
2525 |
} |
2526 |
for( volume = 0; volume < 256; volume++ ) |
2527 |
{ |
2528 |
MV_HarshClipTable[ volume + 128 ] = volume; |
2529 |
} |
2530 |
|
2531 |
// For each volume level, create a translation table with the |
2532 |
// appropriate volume calculated. |
2533 |
for( volume = 0; volume <= MV_MaxVolume; volume++ ) |
2534 |
{ |
2535 |
MV_CreateVolumeTable( volume, volume, MaxVolume ); |
2536 |
} |
2537 |
} |
2538 |
|
2539 |
|
2540 |
/*--------------------------------------------------------------------- |
2541 |
Function: MV_CalcPanTable |
2542 |
|
2543 |
Create the table used to determine the stereo volume level of |
2544 |
a sound located at a specific angle and distance from the listener. |
2545 |
---------------------------------------------------------------------*/ |
2546 |
|
2547 |
void MV_CalcPanTable |
2548 |
( |
2549 |
void |
2550 |
) |
2551 |
|
2552 |
{ |
2553 |
int level; |
2554 |
int angle; |
2555 |
int distance; |
2556 |
int HalfAngle; |
2557 |
int ramp; |
2558 |
|
2559 |
HalfAngle = ( MV_NumPanPositions / 2 ); |
2560 |
|
2561 |
for( distance = 0; distance <= MV_MaxVolume; distance++ ) |
2562 |
{ |
2563 |
level = ( 255 * ( MV_MaxVolume - distance ) ) / MV_MaxVolume; |
2564 |
for( angle = 0; angle <= HalfAngle / 2; angle++ ) |
2565 |
{ |
2566 |
ramp = level - ( ( level * angle ) / |
2567 |
( MV_NumPanPositions / 4 ) ); |
2568 |
|
2569 |
MV_PanTable[ angle ][ distance ].left = ramp; |
2570 |
MV_PanTable[ HalfAngle - angle ][ distance ].left = ramp; |
2571 |
MV_PanTable[ HalfAngle + angle ][ distance ].left = level; |
2572 |
MV_PanTable[ MV_MaxPanPosition - angle ][ distance ].left = level; |
2573 |
|
2574 |
MV_PanTable[ angle ][ distance ].right = level; |
2575 |
MV_PanTable[ HalfAngle - angle ][ distance ].right = level; |
2576 |
MV_PanTable[ HalfAngle + angle ][ distance ].right = ramp; |
2577 |
MV_PanTable[ MV_MaxPanPosition - angle ][ distance ].right = ramp; |
2578 |
} |
2579 |
} |
2580 |
} |
2581 |
|
2582 |
|
2583 |
/*--------------------------------------------------------------------- |
2584 |
Function: MV_SetVolume |
2585 |
|
2586 |
Sets the volume of digitized sound playback. |
2587 |
---------------------------------------------------------------------*/ |
2588 |
|
2589 |
void MV_SetVolume |
2590 |
( |
2591 |
int volume |
2592 |
) |
2593 |
|
2594 |
{ |
2595 |
volume = max( 0, volume ); |
2596 |
volume = min( volume, MV_MaxTotalVolume ); |
2597 |
|
2598 |
MV_TotalVolume = volume; |
2599 |
|
2600 |
// Calculate volume table |
2601 |
MV_CalcVolume( volume ); |
2602 |
} |
2603 |
|
2604 |
|
2605 |
/*--------------------------------------------------------------------- |
2606 |
Function: MV_GetVolume |
2607 |
|
2608 |
Returns the volume of digitized sound playback. |
2609 |
---------------------------------------------------------------------*/ |
2610 |
|
2611 |
int MV_GetVolume |
2612 |
( |
2613 |
void |
2614 |
) |
2615 |
|
2616 |
{ |
2617 |
return( MV_TotalVolume ); |
2618 |
} |
2619 |
|
2620 |
|
2621 |
/*--------------------------------------------------------------------- |
2622 |
Function: MV_SetCallBack |
2623 |
|
2624 |
Set the function to call when a voice stops. |
2625 |
---------------------------------------------------------------------*/ |
2626 |
|
2627 |
void MV_SetCallBack |
2628 |
( |
2629 |
void ( *function )( unsigned long ) |
2630 |
) |
2631 |
|
2632 |
{ |
2633 |
MV_CallBackFunc = function; |
2634 |
} |
2635 |
|
2636 |
|
2637 |
/*--------------------------------------------------------------------- |
2638 |
Function: MV_SetReverseStereo |
2639 |
|
2640 |
Set the orientation of the left and right channels. |
2641 |
---------------------------------------------------------------------*/ |
2642 |
|
2643 |
void MV_SetReverseStereo |
2644 |
( |
2645 |
int setting |
2646 |
) |
2647 |
|
2648 |
{ |
2649 |
MV_SwapLeftRight = setting; |
2650 |
} |
2651 |
|
2652 |
|
2653 |
/*--------------------------------------------------------------------- |
2654 |
Function: MV_GetReverseStereo |
2655 |
|
2656 |
Returns the orientation of the left and right channels. |
2657 |
---------------------------------------------------------------------*/ |
2658 |
|
2659 |
int MV_GetReverseStereo |
2660 |
( |
2661 |
void |
2662 |
) |
2663 |
|
2664 |
{ |
2665 |
return( MV_SwapLeftRight ); |
2666 |
} |
2667 |
|
2668 |
|
2669 |
/*--------------------------------------------------------------------- |
2670 |
Function: MV_TestPlayback |
2671 |
|
2672 |
Checks if playback has started. |
2673 |
---------------------------------------------------------------------*/ |
2674 |
|
2675 |
int MV_TestPlayback(void) |
2676 |
{ |
2677 |
return MV_Ok; |
2678 |
} |
2679 |
|
2680 |
|
2681 |
/*--------------------------------------------------------------------- |
2682 |
Function: MV_Init |
2683 |
|
2684 |
Perform the initialization of variables and memory used by |
2685 |
Multivoc. |
2686 |
---------------------------------------------------------------------*/ |
2687 |
|
2688 |
int MV_Init |
2689 |
( |
2690 |
int soundcard, |
2691 |
int MixRate, |
2692 |
int Voices, |
2693 |
int numchannels, |
2694 |
int samplebits |
2695 |
) |
2696 |
|
2697 |
{ |
2698 |
char *ptr; |
2699 |
int status; |
2700 |
int buffer; |
2701 |
int index; |
2702 |
|
2703 |
if ( MV_Installed ) |
2704 |
{ |
2705 |
MV_Shutdown(); |
2706 |
} |
2707 |
|
2708 |
MV_SetErrorCode( MV_Ok ); |
2709 |
|
2710 |
MV_TotalMemory = Voices * sizeof( VoiceNode ) + sizeof( HARSH_CLIP_TABLE_8 ); |
2711 |
status = USRHOOKS_GetMem( ( void ** )&ptr, MV_TotalMemory ); |
2712 |
if ( status != USRHOOKS_Ok ) |
2713 |
{ |
2714 |
MV_SetErrorCode( MV_NoMem ); |
2715 |
return( MV_Error ); |
2716 |
} |
2717 |
|
2718 |
MV_Voices = ( VoiceNode * )ptr; |
2719 |
MV_HarshClipTable = ptr + ( MV_TotalMemory - sizeof( HARSH_CLIP_TABLE_8 ) ); |
2720 |
|
2721 |
// Set number of voices before calculating volume table |
2722 |
MV_MaxVoices = Voices; |
2723 |
|
2724 |
LL_Reset( (VoiceNode *)&VoiceList, next, prev ); |
2725 |
LL_Reset( (VoiceNode *)&VoicePool, next, prev ); |
2726 |
|
2727 |
for( index = 0; index < Voices; index++ ) |
2728 |
{ |
2729 |
LL_Add( (VoiceNode *)&VoicePool, &MV_Voices[ index ], next, prev ); |
2730 |
} |
2731 |
|
2732 |
// Allocate mix buffer within 1st megabyte |
2733 |
status = DPMI_GetDOSMemory( ( void ** )&ptr, &MV_BufferDescriptor, |
2734 |
2 * TotalBufferSize ); |
2735 |
|
2736 |
if ( status ) |
2737 |
{ |
2738 |
USRHOOKS_FreeMem( MV_Voices ); |
2739 |
MV_Voices = NULL; |
2740 |
MV_TotalMemory = 0; |
2741 |
|
2742 |
MV_SetErrorCode( MV_NoMem ); |
2743 |
return( MV_Error ); |
2744 |
} |
2745 |
|
2746 |
MV_SetReverseStereo( FALSE ); |
2747 |
|
2748 |
// Initialize the sound card |
2749 |
status = DSL_Init(); |
2750 |
if ( status != DSL_Ok ) |
2751 |
{ |
2752 |
MV_SetErrorCode( MV_BlasterError ); |
2753 |
} |
2754 |
|
2755 |
if ( MV_ErrorCode != MV_Ok ) |
2756 |
{ |
2757 |
status = MV_ErrorCode; |
2758 |
|
2759 |
USRHOOKS_FreeMem( MV_Voices ); |
2760 |
MV_Voices = NULL; |
2761 |
MV_TotalMemory = 0; |
2762 |
|
2763 |
DPMI_FreeDOSMemory( MV_BufferDescriptor ); |
2764 |
|
2765 |
MV_SetErrorCode( status ); |
2766 |
return( MV_Error ); |
2767 |
} |
2768 |
|
2769 |
MV_SoundCard = soundcard; |
2770 |
MV_Installed = TRUE; |
2771 |
MV_CallBackFunc = NULL; |
2772 |
MV_RecordFunc = NULL; |
2773 |
MV_Recording = FALSE; |
2774 |
MV_ReverbLevel = 0; |
2775 |
MV_ReverbTable = NULL; |
2776 |
|
2777 |
// Set the sampling rate |
2778 |
MV_RequestedMixRate = MixRate; |
2779 |
|
2780 |
// Set Mixer to play stereo digitized sound |
2781 |
MV_SetMixMode( numchannels, samplebits ); |
2782 |
MV_ReverbDelay = MV_BufferSize * 3; |
2783 |
|
2784 |
MV_MixBuffer[ MV_NumberOfBuffers ] = ptr; |
2785 |
for( buffer = 0; buffer < MV_NumberOfBuffers; buffer++ ) |
2786 |
{ |
2787 |
MV_MixBuffer[ buffer ] = ptr; |
2788 |
ptr += MV_BufferSize; |
2789 |
} |
2790 |
|
2791 |
// Calculate pan table |
2792 |
MV_CalcPanTable(); |
2793 |
|
2794 |
MV_SetVolume( MV_MaxTotalVolume ); |
2795 |
|
2796 |
// Start the playback engine |
2797 |
status = MV_StartPlayback(); |
2798 |
if ( status != MV_Ok ) |
2799 |
{ |
2800 |
// Preserve error code while we shutdown. |
2801 |
status = MV_ErrorCode; |
2802 |
MV_Shutdown(); |
2803 |
MV_SetErrorCode( status ); |
2804 |
return( MV_Error ); |
2805 |
} |
2806 |
|
2807 |
if ( MV_TestPlayback() != MV_Ok ) |
2808 |
{ |
2809 |
status = MV_ErrorCode; |
2810 |
MV_Shutdown(); |
2811 |
MV_SetErrorCode( status ); |
2812 |
return( MV_Error ); |
2813 |
} |
2814 |
|
2815 |
return( MV_Ok ); |
2816 |
} |
2817 |
|
2818 |
|
2819 |
/*--------------------------------------------------------------------- |
2820 |
Function: MV_Shutdown |
2821 |
|
2822 |
Restore any resources allocated by Multivoc back to the system. |
2823 |
---------------------------------------------------------------------*/ |
2824 |
|
2825 |
int MV_Shutdown |
2826 |
( |
2827 |
void |
2828 |
) |
2829 |
|
2830 |
{ |
2831 |
int buffer; |
2832 |
unsigned flags; |
2833 |
|
2834 |
if ( !MV_Installed ) |
2835 |
{ |
2836 |
return( MV_Ok ); |
2837 |
} |
2838 |
|
2839 |
flags = DisableInterrupts(); |
2840 |
|
2841 |
MV_KillAllVoices(); |
2842 |
|
2843 |
MV_Installed = FALSE; |
2844 |
|
2845 |
// Stop the sound recording engine |
2846 |
if ( MV_Recording ) |
2847 |
{ |
2848 |
MV_StopRecord(); |
2849 |
} |
2850 |
|
2851 |
// Stop the sound playback engine |
2852 |
MV_StopPlayback(); |
2853 |
|
2854 |
// Shutdown the sound card |
2855 |
DSL_Shutdown(); |
2856 |
|
2857 |
RestoreInterrupts( flags ); |
2858 |
|
2859 |
// Free any voices we allocated |
2860 |
USRHOOKS_FreeMem( MV_Voices ); |
2861 |
MV_Voices = NULL; |
2862 |
MV_TotalMemory = 0; |
2863 |
|
2864 |
LL_Reset( (VoiceNode *)&VoiceList, next, prev ); |
2865 |
LL_Reset( (VoiceNode *)&VoicePool, next, prev ); |
2866 |
|
2867 |
MV_MaxVoices = 1; |
2868 |
|
2869 |
// Release the descriptor from our mix buffer |
2870 |
DPMI_FreeDOSMemory( MV_BufferDescriptor ); |
2871 |
for( buffer = 0; buffer < NumberOfBuffers; buffer++ ) |
2872 |
{ |
2873 |
MV_MixBuffer[ buffer ] = NULL; |
2874 |
} |
2875 |
|
2876 |
return( MV_Ok ); |
2877 |
} |