int ff_pix_sum16_sse2(uint8_t *pix, int line_size);
int ff_pix_sum16_xop(uint8_t *pix, int line_size);
int ff_pix_norm1_mmx(uint8_t *pix, int line_size);
int ff_pix_sum16_sse2(uint8_t *pix, int line_size);
int ff_pix_sum16_xop(uint8_t *pix, int line_size);
int ff_pix_norm1_mmx(uint8_t *pix, int line_size);