static void vc1_inv_trans_8x4_c(uint8_t *dest, int linesize, DCTELEM *block) { int i; register int t1,t2,t3,t4,t5,t6,t7,t8; DCTELEM *src, *dst; const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; src = block; dst = block; for(i = 0; i < 4; i++){ t1 = 12 * (src[0] + src[4]) + 4; t2 = 12 * (src[0] - src[4]) + 4; t3 = 16 * src[2] + 6 * src[6]; t4 = 6 * src[2] - 16 * src[6]; t5 = t1 + t3; t6 = t2 + t4; t7 = t2 - t4; t8 = t1 - t3; t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7]; t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7]; t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7]; t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7]; dst[0] = (t5 + t1) >> 3; dst[1] = (t6 + t2) >> 3; dst[2] = (t7 + t3) >> 3; dst[3] = (t8 + t4) >> 3; dst[4] = (t8 - t4) >> 3; dst[5] = (t7 - t3) >> 3; dst[6] = (t6 - t2) >> 3; dst[7] = (t5 - t1) >> 3; src += 8; dst += 8; } src = block; for(i = 0; i < 8; i++){ t1 = 17 * (src[ 0] + src[16]) + 64; t2 = 17 * (src[ 0] - src[16]) + 64; t3 = 22 * src[ 8] + 10 * src[24]; t4 = 22 * src[24] - 10 * src[ 8]; dest[0*linesize] = cm[dest[0*linesize] + ((t1 + t3) >> 7)]; dest[1*linesize] = cm[dest[1*linesize] + ((t2 - t4) >> 7)]; dest[2*linesize] = cm[dest[2*linesize] + ((t2 + t4) >> 7)]; dest[3*linesize] = cm[dest[3*linesize] + ((t1 - t3) >> 7)]; src ++; dest++; } }