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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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50
spa/plugins/audioconvert/fmt-ops-c.c
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@ -411,3 +411,53 @@ MAKE_INTERLEAVE(24, 24, uint24_t, (uint24_t));
MAKE_INTERLEAVE(32, 32, uint32_t, (uint32_t));
MAKE_INTERLEAVE(32, 32s, uint32_t, bswap_32);
MAKE_INTERLEAVE(64, 64, uint64_t, (uint64_t));
#define MAKE_CLEAR(size) \
void conv_clear_ ##size## d_c(struct convert *conv, \
void * SPA_RESTRICT dst[], uint32_t n_samples) \
{ \
uint32_t i, n_channels = conv->n_channels; \
for (i = 0; i < n_channels; i++) \
memset(dst[i], 0, n_samples * (size>>3)); \
} \
void conv_clear_ ##size## _c(struct convert *conv, \
void * SPA_RESTRICT dst[], uint32_t n_samples) \
{ \
memset(dst[0], 0, n_samples * conv->n_channels * (size>>3)); \
}
MAKE_CLEAR(8);
MAKE_CLEAR(16);
MAKE_CLEAR(24);
MAKE_CLEAR(32);
MAKE_CLEAR(64);
#define MAKE_CLEAR_VAL(size,dtype,val) \
void conv_clear_ ##size## d_c(struct convert *conv, \
void * SPA_RESTRICT dst[], uint32_t n_samples) \
{ \
uint32_t i, j, n_channels = conv->n_channels; \
for (i = 0; i < n_channels; i++) { \
dtype *d = dst[i]; \
for (j = 0; j < n_samples; j++) \
d[j] = val; \
} \
} \
void conv_clear_ ##size## _c(struct convert *conv, \
void * SPA_RESTRICT dst[], uint32_t n_samples) \
{ \
uint32_t j; \
dtype *d = dst[0]; \
n_samples *= conv->n_channels; \
for (j = 0; j < n_samples; j++) \
d[j] = val; \
}
MAKE_CLEAR_VAL(alaw, uint8_t, 0x55);
MAKE_CLEAR_VAL(ulaw, uint8_t, 0xff);
MAKE_CLEAR_VAL(u8, uint8_t, 0x80);
MAKE_CLEAR_VAL(u16, uint16_t, 0x8000);
MAKE_CLEAR_VAL(u24, uint24_t, U32_TO_U24(0x800000));
MAKE_CLEAR_VAL(u24_32, uint32_t, 0x800000);
MAKE_CLEAR_VAL(u32, uint32_t, 0x80000000);