ericonr
/
sndio
mirror of https://github.com/ericonr/sndio.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

s/wav_conv/wav_conv_map

This commit is contained in:
Alexandre Ratchov 2014-12-29 18:47:10 +01:00
parent b8733bf001
commit 10149c9d0e
1 changed files with 21 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
aucat/wav.c
View File

@ -191,6 +191,25 @@ le32_set(le32_t *p, unsigned int v)
p->ld[3] = v >> 24;
}
#if 0
static inline int
f32_to_s24(unsigned int x)
{
unsigned int s, e, m, y;
s = (x >> 31);
e = (x >> 23) & 0xff;
m = (x & 0x007fffff) | 0x00800000;
if (e < 127 - 24)
y = 0;
else if (e > 127 - 1)
y = 0x00800000;
else
y = m >> (127 - e);
return (y ^ -s) + s;
}
#endif
static int
wav_readfmt(struct wav *w, unsigned int csize)
{
@ -383,7 +402,7 @@ wav_writehdr(struct wav *w)
* convert ``count'' samples using the given char->short map
*/
static void
wav_conv(unsigned char *data, unsigned int count, short *map)
wav_conv_map(unsigned char *data, unsigned int count, short *map)
{
unsigned int i;
unsigned char *iptr;
@ -428,7 +447,7 @@ wav_read(struct wav *w, void *data, size_t count)
}
w->curpos += n;
if (w->map) {
wav_conv(data, n, w->map);
wav_conv_map(data, n, w->map);
n *= sizeof(adata_t);
}
return n;