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Possibly improve MAD sample conversion speed

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No idea if this brings a noticeable improvement, but it probably makes
better sense to only do the division step one time instead of doing it
twice interleaved when processing stereo files, which are the most
common scenario anyway.

Signed-off-by: Christopher Snowhill <kode54@gmail.com>
This commit is contained in:
Christopher Snowhill 2022-02-26 01:08:55 -08:00
parent 51e9648865
commit 2c0f04bbeb
1 changed files with 2 additions and 2 deletions
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4
Plugins/MAD/MADDecoder.m
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@ -469,11 +469,11 @@
int ch; int ch;
// samples [0 ... n] // samples [0 ... n]
float scale = (float)MAD_F_ONE;
for(ch = 0; ch < channels; ch++) { for(ch = 0; ch < channels; ch++) {
vDSP_vflt32(&_synth.pcm.samples[ch][startingSample], 1, &_outputBuffer[ch], channels, _outputFrames); vDSP_vflt32(&_synth.pcm.samples[ch][startingSample], 1, &_outputBuffer[ch], channels, _outputFrames);
vDSP_vsdiv(&_outputBuffer[ch], channels, &scale, &_outputBuffer[ch], channels, _outputFrames);
} }
float scale = (float)MAD_F_ONE;
vDSP_vsdiv(&_outputBuffer[0], 1, &scale, &_outputBuffer[0], 1, _outputFrames * channels);
// Output to a file // Output to a file
// FILE *f = fopen("data.raw", "a"); // FILE *f = fopen("data.raw", "a");