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Merge pull request #15 from Intexk/patch-1

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Performance in scaleplay function
This commit is contained in:
Rupert Hausberger 2017-04-06 20:22:43 +02:00 • committed by GitHub
commit d99a5c7185
1 changed files with 9 additions and 6 deletions
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15
sae/audio.js
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@ -214,22 +214,25 @@ function SAEO_Audio() {
const INV32768 = 1.0 / 32768; /* mul is always fasten than div */
function scaleplay(e, buffer, frames) {
var chn=SAEV_config.audio.channels;
var z=e.outputBuffer.length;
if (muted) {
for (var ch = 0; ch < SAEV_config.audio.channels; ch++) {
for (var ch = 0; ch < chn; ch++) {
var data = e.outputBuffer.getChannelData(ch);
for (var i = 0; i < e.outputBuffer.length; i++)
for (var i = 0; i < z; i++)
data[i] = 0.0;
}
return;
}
/*if (driver.context.sampleRate != used_freq) {
} else*/ {
var step = frames / e.outputBuffer.length;
var step = frames / z;
for (var ch = 0; ch < SAEV_config.audio.channels; ch++) {
for (var ch = 0; ch < chn; ch++) {
var data = e.outputBuffer.getChannelData(ch);
for (var i = 0, j = 0.0; i < e.outputBuffer.length; i++, j += step)
data[i] = buffer[ch][j >>> 0] * INV32768;
var tbuf=buffer[ch];
for (var i = 0, j = 0.0; i < z; i++, j += step)
data[i] = tbuf[j >>> 0] * INV32768;
}
}
}