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channelmix: add optimised NxM channelmix functions

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This commit is contained in:
Wim Taymans 2022-09-28 17:50:59 +02:00
parent 10f1d545a7
commit 637bc6f7c4
4 changed files with 54 additions and 6 deletions
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12
spa/plugins/audioconvert/channelmix-ops-c.c
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@ -94,16 +94,16 @@ channelmix_f32_n_m_c(struct channelmix *mix, void * SPA_RESTRICT dst[],
clear_c(d[i], n_samples);
}
else {
for (n = 0; n < n_samples; n++) {
for (i = 0; i < n_dst; i++) {
for (i = 0; i < n_dst; i++) {
float *mi = mix->matrix[i], *di = d[i];
for (n = 0; n < n_samples; n++) {
float sum = 0.0f;
for (j = 0; j < n_src; j++)
sum += s[j][n] * mix->matrix[i][j];
d[i][n] = sum;
sum += s[j][n] * mi[j];
di[n] = sum;
}
}
for (i = 0; i < n_dst; i++)
lr4_process(&mix->lr4[i], d[i], d[i], 1.0f, n_samples);
}
}
}