static void memset_bytes(uint8_t *dst, size_t dst_size, uint8_t *clear,
size_t clear_size)
{
- size_t pos = 0;
int same = 1;
int i;
if (clear_size == 1) {
memset(dst, clear[0], dst_size);
dst_size = 0;
- } else if (clear_size == 2) {
- uint16_t val = AV_RN16(clear);
- for (; dst_size >= 2; dst_size -= 2) {
- AV_WN16(dst, val);
- dst += 2;
- }
- } else if (clear_size == 4) {
- uint32_t val = AV_RN32(clear);
- for (; dst_size >= 4; dst_size -= 4) {
- AV_WN32(dst, val);
- dst += 4;
- }
- } else if (clear_size == 8) {
- uint32_t val = AV_RN64(clear);
- for (; dst_size >= 8; dst_size -= 8) {
- AV_WN64(dst, val);
- dst += 8;
- }
+ } else {
+ if (clear_size > dst_size)
+ clear_size = dst_size;
+ memcpy(dst, clear, clear_size);
+ av_memcpy_backptr(dst + clear_size, clear_size, dst_size - clear_size);
}
-
- for (; dst_size; dst_size--)
- *dst++ = clear[pos++ % clear_size];
}
// Maximum size in bytes of a plane element (usually a pixel, or multiple pixels