Mercurial > sdl-ios-xcode

comparison src/audio/dc/aica.c @ 1461:11134dc42da8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Updated for Dreamcast KOS June 2005 snapshot: http://cadcdev.sourceforge.net/svn/snapshots/ http://gamedev.allusion.net/softprj/kos/dcsetup.php
author Sam Lantinga <slouken@libsdl.org>
date Thu, 02 Mar 2006 13:16:02 +0000
parents dad72daf44b3
children 782fd950bd46 c121d94672cb
comparison
equal deleted inserted replaced
1460:d79e6b0c2c19 1461:11134dc42da8
3 * 3 *
4 * (c)2000 Dan Potter 4 * (c)2000 Dan Potter
5 * modify BERO 5 * modify BERO
6 */ 6 */
7 #include "aica.h" 7 #include "aica.h"
8
9 #include <arch/irq.h>
10 #include <dc/spu.h>
8 11
9 /* #define dc_snd_base ((volatile unsigned char *)0x00800000) */ /* arm side */ 12 /* #define dc_snd_base ((volatile unsigned char *)0x00800000) */ /* arm side */
10 #define dc_snd_base ((volatile unsigned char *)0xa0700000) /* dc side */ 13 #define dc_snd_base ((volatile unsigned char *)0xa0700000) /* dc side */
11 14
12 /* Some convienence macros */ 15 /* Some convienence macros */
35 irq_restore(OLD); \ 38 irq_restore(OLD); \
36 } while(0) 39 } while(0)
37 40
38 41
39 void aica_init() { 42 void aica_init() {
40 int i, j, old; 43 int i, j, old = 0;
41 44
42 /* Initialize AICA channels */ 45 /* Initialize AICA channels */
43 G2_LOCK(old); 46 G2_LOCK(old);
44 SNDREG32(0x2800) = 0x0000; 47 SNDREG32(0x2800) = 0x0000;
45 48
144 pan is a panning constant -- 0 is left, 128 is center, 255 is right. 147 pan is a panning constant -- 0 is left, 128 is center, 255 is right.
145 148
146 This routine (and the similar ones) owe a lot to Marcus' sound example -- 149 This routine (and the similar ones) owe a lot to Marcus' sound example --
147 I hadn't gotten quite this far into dissecting the individual regs yet. */ 150 I hadn't gotten quite this far into dissecting the individual regs yet. */
148 void aica_play(int ch,int mode,unsigned long smpptr,int loopst,int loopend,int freq,int vol,int pan,int loopflag) { 151 void aica_play(int ch,int mode,unsigned long smpptr,int loopst,int loopend,int freq,int vol,int pan,int loopflag) {
149 int i; 152 /* int i;
153 */
150 int val; 154 int val;
151 int old; 155 int old = 0;
152 156
153 /* Stop the channel (if it's already playing) */ 157 /* Stop the channel (if it's already playing) */
154 aica_stop(ch); 158 aica_stop(ch);
155 /* doesn't seem to be needed, but it's here just in case */ 159 /* doesn't seem to be needed, but it's here just in case */
156 /* 160 /*