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channelmix: add quad and 3.1 to mono optimisation

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This commit is contained in:
Wim Taymans 2018-12-19 16:49:29 +01:00
parent 00d1488c07
commit b6db6e2130
1 changed files with 38 additions and 0 deletions
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38
spa/plugins/audioconvert/channelmix-ops.c
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@ -122,6 +122,42 @@ channelmix_f32_2_1(void *data, int n_dst, void *dst[n_dst],
}
}
static void
channelmix_f32_4_1(void *data, int n_dst, void *dst[n_dst],
int n_src, const void *src[n_src], void *matrix, float v, int n_bytes)
{
int n, n_samples = n_bytes / sizeof(float);
float **d = (float **)dst;
float **s = (float **)src;
if (v <= VOLUME_MIN) {
memset(d[0], 0, n_bytes);
}
else {
const float f = v * 0.25f;
for (n = 0; n < n_samples; n++)
d[0][n] = (s[0][n] + s[1][n] + s[2][n] + s[3][n]) * f;
}
}
static void
channelmix_f32_3p1_1(void *data, int n_dst, void *dst[n_dst],
int n_src, const void *src[n_src], void *matrix, float v, int n_bytes)
{
int n, n_samples = n_bytes / sizeof(float);
float **d = (float **)dst;
float **s = (float **)src;
if (v <= VOLUME_MIN) {
memset(d[0], 0, n_bytes);
}
else {
const float f = v * 0.5f;
for (n = 0; n < n_samples; n++)
d[0][n] = (s[0][n] + s[1][n] + s[2][n]) * f;
}
}
#define MASK_QUAD _M(FL)|_M(FR)|_M(RL)|_M(RR)|_M(UNKNOWN)
@ -439,6 +475,8 @@ static const struct channelmix_info {
{ 1, MASK_MONO, 2, MASK_STEREO, channelmix_f32_1_2, 0 },
{ 2, MASK_STEREO, 1, MASK_MONO, channelmix_f32_2_1, 0 },
{ 4, MASK_QUAD, 1, MASK_MONO, channelmix_f32_4_1, 0 },
{ 4, MASK_3_1, 1, MASK_MONO, channelmix_f32_3p1_1, 0 },
#if defined (__SSE__)
{ 2, MASK_STEREO, 4, MASK_QUAD, channelmix_f32_2_4_sse, FEATURE_SSE },
#endif