auxbus.c
2.09 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
/*====================================================================
* auxbus.c
*
* Copyright 1993, Silicon Graphics, Inc.
* All Rights Reserved.
*
* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics,
* Inc.; the contents of this file may not be disclosed to third
* parties, copied or duplicated in any form, in whole or in part,
* without the prior written permission of Silicon Graphics, Inc.
*
* RESTRICTED RIGHTS LEGEND:
* Use, duplication or disclosure by the Government is subject to
* restrictions as set forth in subdivision (c)(1)(ii) of the Rights
* in Technical Data and Computer Software clause at DFARS
* 252.227-7013, and/or in similar or successor clauses in the FAR,
* DOD or NASA FAR Supplement. Unpublished - rights reserved under the
* Copyright Laws of the United States.
*====================================================================*/
#include <libaudio.h>
#include "synthInternals.h"
void alAuxBusNew(ALAuxBus *m, void *sources, int maxSources)
{
alFilterNew((ALFilter *) m, alAuxBusPull, alAuxBusParam, AL_AUXBUS);
m->sourceCount = 0;
m->maxSources = maxSources;
m->sources = (ALFilter **)sources;
}
Acmd *alAuxBusPull(void *filter, short *outp, int outCount, int flags, Acmd *p)
{
Acmd *ptr = p;
ALAuxBus *m = (ALAuxBus *)filter;
ALFilter **sources = m->sources;
int i;
/*
* clear the output buffers here
*/
aClearBuffer(ptr++, AL_AUX_L_OUT, outCount<<1);
aClearBuffer(ptr++, AL_AUX_R_OUT, outCount<<1);
if (m->sourceCount) {
for (i = 0; i < m->sourceCount; i++) {
ptr = (sources[i]->handler)(sources[i], outp, outCount, 0, ptr);
}
}
return ptr;
}
int alAuxBusParam(void *filter, int paramID, void *param)
{
ALAuxBus *m = (ALAuxBus *) filter;
ALFilter **sources = m->sources;
switch (paramID) {
case (AL_FILTER_ADD_SOURCE):
sources[m->sourceCount++] = (ALFilter *) param;
break;
default:
/* ??? */
break;
}
return 0;
}