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void
subsample_frame (uint8_t * dst[3], uint8_t * src[3], int w, int h);
/* search steps */
void
mb_search_44 (uint16_t x, uint16_t y);
void
mb_search_22 (uint16_t x, uint16_t y);
void
mb_search_11 (uint16_t x, uint16_t y);
void
mb_search_00 (uint16_t x, uint16_t y);
/* no accel */
uint32_t
calc_SAD_noaccel (uint8_t * frm, uint8_t * ref);
uint32_t
calc_SAD_uv_noaccel (uint8_t * frm, uint8_t * ref);
uint32_t
calc_SAD_half_noaccel (uint8_t * ref, uint8_t * frm1, uint8_t * frm2);
/* MMXE */
uint32_t
calc_SAD_mmxe (uint8_t * frm, uint8_t * ref);
uint32_t
calc_SAD_uv420_mmxe (uint8_t * frm, uint8_t * ref);
uint32_t
calc_SAD_uv411_mmxe (uint8_t * frm, uint8_t * ref);
uint32_t
calc_SAD_half_mmxe (uint8_t * ref, uint8_t * frm1, uint8_t * frm2);
/* MMX */
uint32_t
calc_SAD_mmx (uint8_t * frm, uint8_t * ref);
uint32_t
calc_SAD_uv420_mmx (uint8_t * frm, uint8_t * ref);
uint32_t
calc_SAD_uv411_mmx (uint8_t * frm, uint8_t * ref);
uint32_t
calc_SAD_half_mmx (uint8_t * ref, uint8_t * frm1, uint8_t * frm2);
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