qf/quakeforge
0
0
Fork 0
mirror of https://git.code.sf.net/p/quake/quakeforge synced 2025-05-30 16:30:43 +00:00
Code Issues Projects Releases Packages Wiki Activity

snd_dma.c fixes for non-power-of-two values. From Jacob Meuser.

Browse source
This commit is contained in:
Antti Harri 2011-06-04 09:47:15 +03:00
parent 67c7796c0b
commit 8d1bd58ade
1 changed files with 11 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

18
libs/audio/renderer/snd_dma.c
View file

@ -75,14 +75,16 @@ static snd_output_funcs_t *snd_output_funcs;
static void static void
s_xfer_paint_buffer (int endtime) s_xfer_paint_buffer (int endtime)
{ {
int count, out_idx, out_mask, step, val; int count, out_idx, out_max, step, val;
float snd_vol; float snd_vol;
float *p; float *p;
p = (float *) snd_paintbuffer; p = (float *) snd_paintbuffer;
count = (endtime - snd_paintedtime) * snd_shm->channels; count = (endtime - snd_paintedtime) * snd_shm->channels;
out_mask = (snd_shm->frames * snd_shm->channels) - 1; out_max = (snd_shm->frames * snd_shm->channels) - 1;
out_idx = (snd_paintedtime * snd_shm->channels) & out_mask; out_idx = snd_paintedtime * snd_shm->channels;
while (out_idx > out_max)
out_idx -= out_max + 1;
step = 3 - snd_shm->channels; step = 3 - snd_shm->channels;
snd_vol = snd_volume->value; snd_vol = snd_volume->value;
@ -96,8 +98,9 @@ s_xfer_paint_buffer (int endtime)
val = 0x7fff; val = 0x7fff;
else if (val < -0x8000) else if (val < -0x8000)
val = -0x8000; val = -0x8000;
out[out_idx] = val; out[out_idx++] = val;
out_idx = (out_idx + 1) & out_mask; if (out_idx > out_max)
out_idx = 0;
} }
} else if (snd_shm->samplebits == 8) { } else if (snd_shm->samplebits == 8) {
unsigned char *out = (unsigned char *) snd_shm->buffer; unsigned char *out = (unsigned char *) snd_shm->buffer;
@ -109,8 +112,9 @@ s_xfer_paint_buffer (int endtime)
val = 0x7f; val = 0x7f;
else if (val < -0x80) else if (val < -0x80)
val = -0x80; val = -0x80;
out[out_idx] = val + 0x80; out[out_idx++] = val + 0x80;
out_idx = (out_idx + 1) & out_mask; if (out_idx > out_max)
out_idx = 0;
} }
} }
} }