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Uses fixed-point math to properly calculate the exact amount of space needed.

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ilag11111 2014-04-25 13:17:05 -07:00
parent f7bbf8c6d0
commit b21d5c55c9
1 changed files with 1 additions and 1 deletions
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2
src/sdl/mixer_sound.c
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@ -152,7 +152,7 @@ static Mix_Chunk *ds2chunk(void *stream)
if (!(frac & 0xFFFF)) // other solid multiples (change if FRACBITS != 16)
newsamples = samples * (frac >> FRACBITS);
else // strange and unusual fractional frequency steps, plus anything higher than 44100hz.
newsamples=(samples/freq + 1) *44100 ; //Result of division is not fractional, so 1 is added to ensure a roundup rather than truncation.
newsamples = FixedMul(FixedDiv(samples, freq), 44100) + 1; // add 1 to counter truncation.
if (newsamples >= UINT32_MAX>>2)
return NULL; // would and/or did wrap, can't store.
break;