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audioconvert: refactor peaks resampler

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Use common code in macro and generate arch specific version.
Compile with -Ofast to optimize some fmaxf calls.
This commit is contained in:
Wim Taymans 2022-09-07 16:00:31 +02:00
parent a79b5c86ea
commit 6e9e02b420
9 changed files with 89 additions and 110 deletions
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50
spa/plugins/audioconvert/resample-peaks-c.c
View file

@ -26,48 +26,12 @@
#include "resample-peaks-impl.h"
void resample_peaks_process_c(struct resample *r,
const void * SPA_RESTRICT src[], uint32_t *in_len,
void * SPA_RESTRICT dst[], uint32_t *out_len)
static inline float find_abs_max_c(const float *s, uint32_t n_samples, float m)
{
struct peaks_data *pd = r->data;
uint32_t c, i, o, end, chunk, o_count, i_count;
if (SPA_UNLIKELY(r->channels == 0))
return;
for (c = 0; c < r->channels; c++) {
const float *s = src[c];
float *d = dst[c], m = pd->max_f[c];
o_count = pd->o_count;
i_count = pd->i_count;
o = i = 0;
while (i < *in_len && o < *out_len) {
end = ((uint64_t) (o_count + 1) * r->i_rate) / r->o_rate;
end = end > i_count ? end - i_count : 0;
chunk = SPA_MIN(end, *in_len);
for (; i < chunk; i++)
m = SPA_MAX(fabsf(s[i]), m);
if (i == end) {
d[o++] = m;
m = 0.0f;
o_count++;
}
}
pd->max_f[c] = m;
}
*out_len = o;
*in_len = i;
pd->o_count = o_count;
pd->i_count = i_count + i;
while (pd->i_count >= r->i_rate) {
pd->i_count -= r->i_rate;
pd->o_count -= r->o_rate;
}
uint32_t n;
for (n = 0; n < n_samples; n++)
m = fmaxf(fabsf(s[n]), m);
return m;
}
MAKE_PEAKS(c);