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fix an out-by-one error caused by over-optimisation of floats.

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This commit is contained in:
Bill Currie 2002-06-17 00:26:13 +00:00
parent 8e254e4071
commit 59dba829f2
1 changed files with 6 additions and 2 deletions
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8
libs/audio/renderer/snd_mem.c
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@ -56,10 +56,12 @@ SND_GetCache (long samples, int rate, int inwidth, int channels,
{ {
int size; int size;
int width; int width;
float stepscale;
sfxcache_t *sc; sfxcache_t *sc;
width = snd_loadas8bit->int_val ? 1 : 2; width = snd_loadas8bit->int_val ? 1 : 2;
size = samples / ((float) rate / shm->speed); stepscale = (float) rate / shm->speed; // usually 0.5, 1, or 2
size = samples / stepscale;
size *= width * channels; size *= width * channels;
sc = allocator (&sfx->cache, size + sizeof (sfxcache_t), sfx->name); sc = allocator (&sfx->cache, size + sizeof (sfxcache_t), sfx->name);
if (!sc) if (!sc)
@ -175,7 +177,9 @@ SND_ResampleSfx (sfxcache_t *sc, byte * data)
if (sc->loopstart != -1) if (sc->loopstart != -1)
sc->loopstart = sc->loopstart / stepscale; sc->loopstart = sc->loopstart / stepscale;
if (memcmp (sc->data + sc->bytes, "\xde\xad\xbe\xef", 4)) if (memcmp (sc->data + sc->bytes, "\xde\xad\xbe\xef", 4))
Sys_Error ("SND_ResampleSfx screwed the pooch"); Sys_Error ("SND_ResampleSfx screwed the pooch: %02x%02x%02x%02x",
sc->data[sc->bytes + 0], sc->data[sc->bytes + 1],
sc->data[sc->bytes + 2], sc->data[sc->bytes + 3]);
} }
sfxcache_t * sfxcache_t *