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audioconvert: add clear function

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Sets all samples to 0 in the target format.
This commit is contained in:
Wim Taymans 2025-07-01 18:06:39 +02:00
parent 3ff0c270dd
commit 0817001728
3 changed files with 139 additions and 0 deletions
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62
spa/plugins/audioconvert/fmt-ops.c
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@ -376,6 +376,64 @@ static const struct conv_info *find_conv_info(uint32_t src_fmt, uint32_t dst_fmt
return NULL;
}
typedef void (*clear_func_t) (struct convert *conv, void * SPA_RESTRICT dst[],
uint32_t n_samples);
struct clear_info {
uint32_t fmt;
clear_func_t clear;
const char *name;
uint32_t cpu_flags;
};
#define MAKE(fmt,func,...) \
{ SPA_AUDIO_FORMAT_ ##fmt, func, #func , __VA_ARGS__ }
static struct clear_info clear_table[] =
{
MAKE(U8, conv_clear_u8_c),
MAKE(U8P, conv_clear_u8d_c),
MAKE(S8, conv_clear_8_c),
MAKE(S8P, conv_clear_8d_c),
MAKE(U16, conv_clear_u16_c),
MAKE(S16, conv_clear_16_c),
MAKE(S16_OE, conv_clear_16_c),
MAKE(S16P, conv_clear_16d_c),
MAKE(U24, conv_clear_u24_c),
MAKE(S24, conv_clear_24_c),
MAKE(S24_OE, conv_clear_24_c),
MAKE(S24P, conv_clear_24d_c),
MAKE(U24_32, conv_clear_u24_32_c),
MAKE(S24_32, conv_clear_32_c),
MAKE(S24_32_OE, conv_clear_32_c),
MAKE(U32, conv_clear_u32_c),
MAKE(S32, conv_clear_32_c),
MAKE(S32_OE, conv_clear_32_c),
MAKE(S32P, conv_clear_32d_c),
MAKE(F32, conv_clear_32_c),
MAKE(F32_OE, conv_clear_32_c),
MAKE(F32P, conv_clear_32d_c),
MAKE(F64, conv_clear_64_c),
MAKE(F64_OE, conv_clear_64_c),
MAKE(F64P, conv_clear_64d_c),
MAKE(ALAW, conv_clear_alaw_c),
MAKE(ULAW, conv_clear_ulaw_c),
};
#undef MAKE
static const struct clear_info *find_clear_info(uint32_t fmt, uint32_t cpu_flags)
{
SPA_FOR_EACH_ELEMENT_VAR(clear_table, c) {
if (c->fmt == fmt &&
MATCH_CPU_FLAGS(c->cpu_flags, cpu_flags))
return c;
}
return NULL;
}
typedef void (*noise_func_t) (struct convert *conv, float * noise, uint32_t n_samples);
struct noise_info {
@ -492,6 +550,7 @@ int convert_init(struct convert *conv)
const struct conv_info *info;
const struct dither_info *dinfo;
const struct noise_info *ninfo;
const struct clear_info *cinfo;
uint32_t i, conv_flags, data_size[3];
/* we generate int32 bits of random values. With this scale
@ -549,6 +608,8 @@ int convert_init(struct convert *conv)
if (ninfo == NULL)
return -ENOTSUP;
cinfo = find_clear_info(conv->dst_fmt, conv->cpu_flags);
conv->noise_size = NOISE_SIZE;
data_size[0] = SPA_ROUND_UP(conv->noise_size * sizeof(float), FMT_OPS_MAX_ALIGN);
@ -571,6 +632,7 @@ int convert_init(struct convert *conv)
conv->cpu_flags = info->cpu_flags;
conv->update_noise = ninfo->noise;
conv->process = info->process;
conv->clear = cinfo ? cinfo->clear : NULL;
conv->free = impl_convert_free;
conv->func_name = info->name;