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Add comment to audio clipping (see bug #4104)

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Sylvain 2021-11-15 13:43:40 +01:00
parent d4df5d33c5
commit b649314d62
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1 changed files with 2 additions and 0 deletions
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src/audio/SDL_audiocvt.c
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@ -456,6 +456,7 @@ SDL_ConvertStereoTo51(SDL_AudioCVT * cvt, SDL_AudioFormat format)
lf = src[0];
rf = src[1];
ce = (lf + rf) * 0.5f;
/* Constant 0.571f is approx 4/7 not to saturate */
dst[0] = 0.571f * (lf + (lf - 0.5f * ce)); /* FL */
dst[1] = 0.571f * (rf + (rf - 0.5f * ce)); /* FR */
dst[2] = ce; /* FC */
@ -492,6 +493,7 @@ SDL_ConvertQuadTo51(SDL_AudioCVT * cvt, SDL_AudioFormat format)
lb = src[2];
rb = src[3];
ce = (lf + rf) * 0.5f;
/* Constant 0.571f is approx 4/7 not to saturate */
dst[0] = 0.571f * (lf + (lf - 0.5f * ce)); /* FL */
dst[1] = 0.571f * (rf + (rf - 0.5f * ce)); /* FR */
dst[2] = ce; /* FC */