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#include <inttypes.h>
#include "macro.h"
#include "byteswap.h"
static void byteswap16(void *_dst, size_t dstr, const void *_src, size_t sstr, size_t bytes) {
uint16_t *dst = _dst;
const uint16_t *src = _src;
unsigned n = bytes / sizeof(uint16_t);
for (; n > 0; n--) {
*dst = (*src >> 8) | (*src << 8);
src += sstr / sizeof(uint16_t);
dst += dstr / sizeof(uint16_t);
}
}
static void byteswap24(void *_dst, size_t dstr, const void *_src, size_t sstr, size_t bytes) {
uint8_t *dst = _dst;
const uint8_t *src = _src;
unsigned n = bytes / (sizeof(uint8_t)*3);
for (; n > 0; n--) {
dst[0] = src[2];
dst[2] = src[0];
src += sstr / (sizeof(uint8_t)*3);
dst += dstr / (sizeof(uint8_t)*3);
}
}
static void byteswap32(void *_dst, size_t dstr, const void *_src, size_t sstr, size_t bytes) {
uint32_t *dst = _dst;
const uint32_t *src = _src;
unsigned n = bytes / sizeof(uint32_t);
for (; n > 0; n--) {
*dst = (*src << 24) | ((*src & 0xFF00) << 8) | ((*src >> 8) & 0xFF00) | (*src >> 24);
src += sstr / sizeof(uint32_t);
dst += dstr / sizeof(uint32_t);
}
}
byteswap_func_t get_byteswap_func(sa_pcm_format_t f) {
static const byteswap_func_t funcs[SA_PCM_FORMAT_MAX] = {
[SA_PCM_FORMAT_S16_RE] = byteswap16,
[SA_PCM_FORMAT_S24_RE] = byteswap24,
[SA_PCM_FORMAT_S32_RE] = byteswap32,
[SA_PCM_FORMAT_FLOAT32_BE] = byteswap32,
};
sa_assert(f < SA_PCM_FORMAT_MAX);
return funcs[f];
}
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