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Improved fix by changing the formula for how memory is allocated to arbitrary sample rate conversion.

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ilag11111 2014-04-25 12:42:43 -07:00
parent 60a115b0a7
commit f7bbf8c6d0
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) if (!(frac & 0xFFFF)) // other solid multiples (change if FRACBITS != 16)
newsamples = samples * (frac >> FRACBITS); newsamples = samples * (frac >> FRACBITS);
else // strange and unusual fractional frequency steps, plus anything higher than 44100hz. else // strange and unusual fractional frequency steps, plus anything higher than 44100hz.
newsamples = FixedMul(frac, samples) + 2; // add 2 samples for security! the code below rounds up. newsamples=(samples/freq + 1) *44100 ; //Result of division is not fractional, so 1 is added to ensure a roundup rather than truncation.
if (newsamples >= UINT32_MAX>>2) if (newsamples >= UINT32_MAX>>2)
return NULL; // would and/or did wrap, can't store. return NULL; // would and/or did wrap, can't store.
break; break;