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PCM sound, refactored code940

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@27 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-02-04 17:15:31 +00:00
parent 7573607016
commit 4f265db776
28 changed files with 914 additions and 312 deletions
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11
Pico/sound/sn76496.c
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@ -175,7 +175,7 @@ WRITE8_HANDLER( SN76496_4_w ) { SN76496Write(4,data); }
*/
//static
void SN76496Update(short *buffer,int length,int stereo)
void SN76496Update(short *buffer, int length, int stereo)
{
int i;
struct SN76496 *R = &ono_sn;
@ -258,13 +258,10 @@ void SN76496Update(short *buffer,int length,int stereo)
if (out > MAX_OUTPUT * STEP) out = MAX_OUTPUT * STEP;
out /= STEP; // will be optimized to shift
if(stereo) {
// only left channel for stereo (will be copied to right by ym2612 mixing code)
if ((out /= STEP)) // will be optimized to shift; max 0x47ff = 18431
*buffer += out;
buffer+=2;
} else
*buffer++ += out;
if(stereo) buffer+=2; // only left for stereo, to be mixed to right later
else buffer++;
length--;
}