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SDL_ResampleAudio: Fix float accumulation error

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While 78f97108f9 reduced the accumulation error, it was still big enough to cause distortions.
Fixes #6196.

(cherry picked from commit 8145212103)
This commit is contained in:
Markus Mittendrein
2022-11-27 22:46:54 +01:00
committed by Ryan C. Gordon
parent 3acd1ad25f
commit f3c466ec1e
1 changed files with 1 additions and 2 deletions
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3
src/audio/SDL_audiocvt.c
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@@ -198,7 +198,6 @@ SDL_ResampleAudio(const int chans, const int inrate, const int outrate,
typedef float ResampleFloatType; typedef float ResampleFloatType;
const ResampleFloatType finrate = (ResampleFloatType) inrate; const ResampleFloatType finrate = (ResampleFloatType) inrate;
const ResampleFloatType outtimeincr = ((ResampleFloatType) 1.0f) / ((ResampleFloatType) outrate);
const ResampleFloatType ratio = ((float) outrate) / ((float) inrate); const ResampleFloatType ratio = ((float) outrate) / ((float) inrate);
const int paddinglen = ResamplerPadding(inrate, outrate); const int paddinglen = ResamplerPadding(inrate, outrate);
const int framelen = chans * (int)sizeof (float); const int framelen = chans * (int)sizeof (float);
@@ -243,7 +242,7 @@ SDL_ResampleAudio(const int chans, const int inrate, const int outrate,
*(dst++) = outsample; *(dst++) = outsample;
} }
outtime = outtimeincr * i; outtime = ((ResampleFloatType) i) / ((ResampleFloatType) outrate);
} }
return outframes * chans * sizeof(float); return outframes * chans * sizeof(float);