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audioconvert: add dither noise setting in dither struct

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Move the noise setting in the dither struct so that it can be
handled separately.
Setup dither separately.
Set used cpu_flags in structures after setup.
This commit is contained in:
Wim Taymans 2022-06-28 10:52:31 +02:00
parent b7e26002be
commit b5e0151cc0
5 changed files with 33 additions and 20 deletions
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10
spa/plugins/audioconvert/dither-ops.c
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@ -45,7 +45,7 @@ static const struct dither_info {
} dither_table[] =
{
#if defined (HAVE_SSE2)
{ dither_f32_sse2, 0 },
{ dither_f32_sse2, SPA_CPU_FLAG_SSE, },
#endif
{ dither_f32_c, 0 },
};
@ -74,12 +74,16 @@ int dither_init(struct dither *d)
{
const struct dither_info *info;
size_t i;
uint32_t scale;
info = find_dither_info(d->cpu_flags);
if (info == NULL)
return -ENOTSUP;
d->scale = 1.0f / powf(2.0f, 31 + d->quantize);
scale = d->quantize;
scale -= SPA_MIN(scale, d->noise);
d->scale = 1.0f / powf(2.0f, 31 + scale);
d->dither_size = DITHER_SIZE;
d->dither = calloc(d->dither_size + DITHER_OPS_MAX_OVERREAD +
@ -90,6 +94,8 @@ int dither_init(struct dither *d)
for (i = 0; i < SPA_N_ELEMENTS(d->random); i++)
d->random[i] = random();
d->cpu_flags = info->cpu_flags;
d->free = impl_dither_free;
d->process = info->process;
return 0;