sm64coopdx/tools/sdk-tools/adpcm/sampleio.c
2019-08-25 00:46:40 -04:00

63 lines
1.3 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include "vadpcm.h"
static void fmtchan(s32 size, u8 *p, s32 *data, s32 stride)
{
s32 i;
s32 c;
for (i = 0; i < size; i++)
{
c = *data++;
if (c < -0x7fff)
{
c = -0x7fff;
}
if (c >= 0x8000)
{
c = 0x7fff;
}
p[0] = c >> 8;
p[1] = c;
p += stride;
}
}
void writeout(FILE *outfd, s32 size, s32 *l_out, s32 *r_out, s32 chans)
{
static u8 obuf[0x1000];
s32 i;
switch (chans)
{
case 2:
fmtchan(size, obuf, l_out, chans * 2);
fmtchan(size, obuf + 2, r_out, chans * 2);
if (outfd != NULL)
{
if ((i = fwrite(obuf, 1, size * 4, outfd)) != size * 4)
{
fprintf(stderr, "write error %d\n", i);
exit(1);
}
}
break;
case 1:
fmtchan(size, obuf, l_out, 2);
if (outfd != NULL)
{
if ((i = fwrite(obuf, 1, size * 2, outfd)) != size * 2)
{
fprintf(stderr, "write error %d\n", i);
exit(1);
}
}
break;
default:
fprintf(stderr, "Error in number of channels\n");
exit(1);
}
}