/* * Copyright (c) 2002 Brian Foley * Copyright (c) 2002 Dieter Shirley * Copyright (c) 2003-2004 Romain Dolbeau * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config.h" #if HAVE_ALTIVEC_H #include #endif #include "libavcodec/dsputil.h" #include "util_altivec.h" #include "types_altivec.h" #include "dsputil_altivec.h" static int sad16_x2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) { int i; int s; const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0); vector unsigned char *tv; vector unsigned char pix1v, pix2v, pix2iv, avgv, t5; vector unsigned int sad; vector signed int sumdiffs; s = 0; sad = (vector unsigned int)vec_splat_u32(0); for (i = 0; i < h; i++) { /* Read unaligned pixels into our vectors. The vectors are as follows: pix1v: pix1[0]-pix1[15] pix2v: pix2[0]-pix2[15] pix2iv: pix2[1]-pix2[16] */ tv = (vector unsigned char *) pix1; pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1)); tv = (vector unsigned char *) &pix2[0]; pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0])); tv = (vector unsigned char *) &pix2[1]; pix2iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[1])); /* Calculate the average vector */ avgv = vec_avg(pix2v, pix2iv); /* Calculate a sum of abs differences vector */ t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv)); /* Add each 4 pixel group together and put 4 results into sad */ sad = vec_sum4s(t5, sad); pix1 += line_size; pix2 += line_size; } /* Sum up the four partial sums, and put the result into s */ sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); sumdiffs = vec_splat(sumdiffs, 3); vec_ste(sumdiffs, 0, &s); return s; } static int sad16_y2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) { int i; int s; const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0); vector unsigned char *tv; vector unsigned char pix1v, pix2v, pix3v, avgv, t5; vector unsigned int sad; vector signed int sumdiffs; uint8_t *pix3 = pix2 + line_size; s = 0; sad = (vector unsigned int)vec_splat_u32(0); /* Due to the fact that pix3 = pix2 + line_size, the pix3 of one iteration becomes pix2 in the next iteration. We can use this fact to avoid a potentially expensive unaligned read, each time around the loop. Read unaligned pixels into our vectors. The vectors are as follows: pix2v: pix2[0]-pix2[15] Split the pixel vectors into shorts */ tv = (vector unsigned char *) &pix2[0]; pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0])); for (i = 0; i < h; i++) { /* Read unaligned pixels into our vectors. The vectors are as follows: pix1v: pix1[0]-pix1[15] pix3v: pix3[0]-pix3[15] */ tv = (vector unsigned char *) pix1; pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1)); tv = (vector unsigned char *) &pix3[0]; pix3v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[0])); /* Calculate the average vector */ avgv = vec_avg(pix2v, pix3v); /* Calculate a sum of abs differences vector */ t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv)); /* Add each 4 pixel group together and put 4 results into sad */ sad = vec_sum4s(t5, sad); pix1 += line_size; pix2v = pix3v; pix3 += line_size; } /* Sum up the four partial sums, and put the result into s */ sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); sumdiffs = vec_splat(sumdiffs, 3); vec_ste(sumdiffs, 0, &s); return s; } static int sad16_xy2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) { int i; int s; uint8_t *pix3 = pix2 + line_size; const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0); const vector unsigned short two = (const vector unsigned short)vec_splat_u16(2); vector unsigned char *tv, avgv, t5; vector unsigned char pix1v, pix2v, pix3v, pix2iv, pix3iv; vector unsigned short pix2lv, pix2hv, pix2ilv, pix2ihv; vector unsigned short pix3lv, pix3hv, pix3ilv, pix3ihv; vector unsigned short avghv, avglv; vector unsigned short t1, t2, t3, t4; vector unsigned int sad; vector signed int sumdiffs; sad = (vector unsigned int)vec_splat_u32(0); s = 0; /* Due to the fact that pix3 = pix2 + line_size, the pix3 of one iteration becomes pix2 in the next iteration. We can use this fact to avoid a potentially expensive unaligned read, as well as some splitting, and vector addition each time around the loop. Read unaligned pixels into our vectors. The vectors are as follows: pix2v: pix2[0]-pix2[15] pix2iv: pix2[1]-pix2[16] Split the pixel vectors into shorts */ tv = (vector unsigned char *) &pix2[0]; pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0])); tv = (vector unsigned char *) &pix2[1]; pix2iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[1])); pix2hv = (vector unsigned short) vec_mergeh(zero, pix2v); pix2lv = (vector unsigned short) vec_mergel(zero, pix2v); pix2ihv = (vector unsigned short) vec_mergeh(zero, pix2iv); pix2ilv = (vector unsigned short) vec_mergel(zero, pix2iv); t1 = vec_add(pix2hv, pix2ihv); t2 = vec_add(pix2lv, pix2ilv); for (i = 0; i < h; i++) { /* Read unaligned pixels into our vectors. The vectors are as follows: pix1v: pix1[0]-pix1[15] pix3v: pix3[0]-pix3[15] pix3iv: pix3[1]-pix3[16] */ tv = (vector unsigned char *) pix1; pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1)); tv = (vector unsigned char *) &pix3[0]; pix3v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[0])); tv = (vector unsigned char *) &pix3[1]; pix3iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[1])); /* Note that AltiVec does have vec_avg, but this works on vector pairs and rounds up. We could do avg(avg(a,b),avg(c,d)), but the rounding would mean that, for example, avg(3,0,0,1) = 2, when it should be 1. Instead, we have to split the pixel vectors into vectors of shorts, and do the averaging by hand. */ /* Split the pixel vectors into shorts */ pix3hv = (vector unsigned short) vec_mergeh(zero, pix3v); pix3lv = (vector unsigned short) vec_mergel(zero, pix3v); pix3ihv = (vector unsigned short) vec_mergeh(zero, pix3iv); pix3ilv = (vector unsigned short) vec_mergel(zero, pix3iv); /* Do the averaging on them */ t3 = vec_add(pix3hv, pix3ihv); t4 = vec_add(pix3lv, pix3ilv); avghv = vec_sr(vec_add(vec_add(t1, t3), two), two); avglv = vec_sr(vec_add(vec_add(t2, t4), two), two); /* Pack the shorts back into a result */ avgv = vec_pack(avghv, avglv); /* Calculate a sum of abs differences vector */ t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv)); /* Add each 4 pixel group together and put 4 results into sad */ sad = vec_sum4s(t5, sad); pix1 += line_size; pix3 += line_size; /* Transfer the calculated values for pix3 into pix2 */ t1 = t3; t2 = t4; } /* Sum up the four partial sums, and put the result into s */ sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); sumdiffs = vec_splat(sumdiffs, 3); vec_ste(sumdiffs, 0, &s); return s; } static int sad16_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) { int i; int s; const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0); vector unsigned char perm1, perm2, pix1v_low, pix1v_high, pix2v_low, pix2v_high; vector unsigned char t1, t2, t3,t4, t5; vector unsigned int sad; vector signed int sumdiffs; sad = (vector unsigned int)vec_splat_u32(0); for (i = 0; i < h; i++) { /* Read potentially unaligned pixels into t1 and t2 */ perm1 = vec_lvsl(0, pix1); pix1v_high = vec_ld( 0, pix1); pix1v_low = vec_ld(15, pix1); perm2 = vec_lvsl(0, pix2); pix2v_high = vec_ld( 0, pix2); pix2v_low = vec_ld(15, pix2); t1 = vec_perm(pix1v_high, pix1v_low, perm1); t2 = vec_perm(pix2v_high, pix2v_low, perm2); /* Calculate a sum of abs differences vector */ t3 = vec_max(t1, t2); t4 = vec_min(t1, t2); t5 = vec_sub(t3, t4); /* Add each 4 pixel group together and put 4 results into sad */ sad = vec_sum4s(t5, sad); pix1 += line_size; pix2 += line_size; } /* Sum up the four partial sums, and put the result into s */ sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); sumdiffs = vec_splat(sumdiffs, 3); vec_ste(sumdiffs, 0, &s); return s; } static int sad8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) { int i; int s; const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0); vector unsigned char perm1, perm2, permclear, *pix1v, *pix2v; vector unsigned char t1, t2, t3,t4, t5; vector unsigned int sad; vector signed int sumdiffs; sad = (vector unsigned int)vec_splat_u32(0); permclear = (vector unsigned char){255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0}; for (i = 0; i < h; i++) { /* Read potentially unaligned pixels into t1 and t2 Since we're reading 16 pixels, and actually only want 8, mask out the last 8 pixels. The 0s don't change the sum. */ perm1 = vec_lvsl(0, pix1); pix1v = (vector unsigned char *) pix1; perm2 = vec_lvsl(0, pix2); pix2v = (vector unsigned char *) pix2; t1 = vec_and(vec_perm(pix1v[0], pix1v[1], perm1), permclear); t2 = vec_and(vec_perm(pix2v[0], pix2v[1], perm2), permclear); /* Calculate a sum of abs differences vector */ t3 = vec_max(t1, t2); t4 = vec_min(t1, t2); t5 = vec_sub(t3, t4); /* Add each 4 pixel group together and put 4 results into sad */ sad = vec_sum4s(t5, sad); pix1 += line_size; pix2 += line_size; } /* Sum up the four partial sums, and put the result into s */ sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); sumdiffs = vec_splat(sumdiffs, 3); vec_ste(sumdiffs, 0, &s); return s; } static int pix_norm1_altivec(uint8_t *pix, int line_size) { int i; int s; const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0); vector unsigned char *tv; vector unsigned char pixv; vector unsigned int sv; vector signed int sum; sv = (vector unsigned int)vec_splat_u32(0); s = 0; for (i = 0; i < 16; i++) { /* Read in the potentially unaligned pixels */ tv = (vector unsigned char *) pix; pixv = vec_perm(tv[0], tv[1], vec_lvsl(0, pix)); /* Square the values, and add them to our sum */ sv = vec_msum(pixv, pixv, sv); pix += line_size; } /* Sum up the four partial sums, and put the result into s */ sum = vec_sums((vector signed int) sv, (vector signed int) zero); sum = vec_splat(sum, 3); vec_ste(sum, 0, &s); return s; } /** * Sum of Squared Errors for a 8x8 block. * AltiVec-enhanced. * It's the sad8_altivec code above w/ squaring added. */ static int sse8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) { int i; int s; const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0); vector unsigned char perm1, perm2, permclear, *pix1v, *pix2v; vector unsigned char t1, t2, t3,t4, t5; vector unsigned int sum; vector signed int sumsqr; sum = (vector unsigned int)vec_splat_u32(0); permclear = (vector unsigned char){255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0}; for (i = 0; i < h; i++) { /* Read potentially unaligned pixels into t1 and t2 Since we're reading 16 pixels, and actually only want 8, mask out the last 8 pixels. The 0s don't change the sum. */ perm1 = vec_lvsl(0, pix1); pix1v = (vector unsigned char *) pix1; perm2 = vec_lvsl(0, pix2); pix2v = (vector unsigned char *) pix2; t1 = vec_and(vec_perm(pix1v[0], pix1v[1], perm1), permclear); t2 = vec_and(vec_perm(pix2v[0], pix2v[1], perm2), permclear); /* Since we want to use unsigned chars, we can take advantage of the fact that abs(a-b)^2 = (a-b)^2. */ /* Calculate abs differences vector */ t3 = vec_max(t1, t2); t4 = vec_min(t1, t2); t5 = vec_sub(t3, t4); /* Square the values and add them to our sum */ sum = vec_msum(t5, t5, sum); pix1 += line_size; pix2 += line_size; } /* Sum up the four partial sums, and put the result into s */ sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero); sumsqr = vec_splat(sumsqr, 3); vec_ste(sumsqr, 0, &s); return s; } /** * Sum of Squared Errors for a 16x16 block. * AltiVec-enhanced. * It's the sad16_altivec code above w/ squaring added. */ static int sse16_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) { int i; int s; const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0); vector unsigned char perm1, perm2, *pix1v, *pix2v; vector unsigned char t1, t2, t3,t4, t5; vector unsigned int sum; vector signed int sumsqr; sum = (vector unsigned int)vec_splat_u32(0); for (i = 0; i < h; i++) { /* Read potentially unaligned pixels into t1 and t2 */ perm1 = vec_lvsl(0, pix1); pix1v = (vector unsigned char *) pix1; perm2 = vec_lvsl(0, pix2); pix2v = (vector unsigned char *) pix2; t1 = vec_perm(pix1v[0], pix1v[1], perm1); t2 = vec_perm(pix2v[0], pix2v[1], perm2); /* Since we want to use unsigned chars, we can take advantage of the fact that abs(a-b)^2 = (a-b)^2. */ /* Calculate abs differences vector */ t3 = vec_max(t1, t2); t4 = vec_min(t1, t2); t5 = vec_sub(t3, t4); /* Square the values and add them to our sum */ sum = vec_msum(t5, t5, sum); pix1 += line_size; pix2 += line_size; } /* Sum up the four partial sums, and put the result into s */ sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero); sumsqr = vec_splat(sumsqr, 3); vec_ste(sumsqr, 0, &s); return s; } static int pix_sum_altivec(uint8_t * pix, int line_size) { const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0); vector unsigned char perm, *pixv; vector unsigned char t1; vector unsigned int sad; vector signed int sumdiffs; int i; int s; sad = (vector unsigned int)vec_splat_u32(0); for (i = 0; i < 16; i++) { /* Read the potentially unaligned 16 pixels into t1 */ perm = vec_lvsl(0, pix); pixv = (vector unsigned char *) pix; t1 = vec_perm(pixv[0], pixv[1], perm); /* Add each 4 pixel group together and put 4 results into sad */ sad = vec_sum4s(t1, sad); pix += line_size; } /* Sum up the four partial sums, and put the result into s */ sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); sumdiffs = vec_splat(sumdiffs, 3); vec_ste(sumdiffs, 0, &s); return s; } static void get_pixels_altivec(DCTELEM *restrict block, const uint8_t *pixels, int line_size) { int i; vector unsigned char perm, bytes, *pixv; const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0); vector signed short shorts; for (i = 0; i < 8; i++) { // Read potentially unaligned pixels. // We're reading 16 pixels, and actually only want 8, // but we simply ignore the extras. perm = vec_lvsl(0, pixels); pixv = (vector unsigned char *) pixels; bytes = vec_perm(pixv[0], pixv[1], perm); // convert the bytes into shorts shorts = (vector signed short)vec_mergeh(zero, bytes); // save the data to the block, we assume the block is 16-byte aligned vec_st(shorts, i*16, (vector signed short*)block); pixels += line_size; } } static void diff_pixels_altivec(DCTELEM *restrict block, const uint8_t *s1, const uint8_t *s2, int stride) { int i; vector unsigned char perm, bytes, *pixv; const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0); vector signed short shorts1, shorts2; for (i = 0; i < 4; i++) { // Read potentially unaligned pixels // We're reading 16 pixels, and actually only want 8, // but we simply ignore the extras. perm = vec_lvsl(0, s1); pixv = (vector unsigned char *) s1; bytes = vec_perm(pixv[0], pixv[1], perm); // convert the bytes into shorts shorts1 = (vector signed short)vec_mergeh(zero, bytes); // Do the same for the second block of pixels perm = vec_lvsl(0, s2); pixv = (vector unsigned char *) s2; bytes = vec_perm(pixv[0], pixv[1], perm); // convert the bytes into shorts shorts2 = (vector signed short)vec_mergeh(zero, bytes); // Do the subtraction shorts1 = vec_sub(shorts1, shorts2); // save the data to the block, we assume the block is 16-byte aligned vec_st(shorts1, 0, (vector signed short*)block); s1 += stride; s2 += stride; block += 8; // The code below is a copy of the code above... This is a manual // unroll. // Read potentially unaligned pixels // We're reading 16 pixels, and actually only want 8, // but we simply ignore the extras. perm = vec_lvsl(0, s1); pixv = (vector unsigned char *) s1; bytes = vec_perm(pixv[0], pixv[1], perm); // convert the bytes into shorts shorts1 = (vector signed short)vec_mergeh(zero, bytes); // Do the same for the second block of pixels perm = vec_lvsl(0, s2); pixv = (vector unsigned char *) s2; bytes = vec_perm(pixv[0], pixv[1], perm); // convert the bytes into shorts shorts2 = (vector signed short)vec_mergeh(zero, bytes); // Do the subtraction shorts1 = vec_sub(shorts1, shorts2); // save the data to the block, we assume the block is 16-byte aligned vec_st(shorts1, 0, (vector signed short*)block); s1 += stride; s2 += stride; block += 8; } } static void clear_block_altivec(DCTELEM *block) { LOAD_ZERO; vec_st(zero_s16v, 0, block); vec_st(zero_s16v, 16, block); vec_st(zero_s16v, 32, block); vec_st(zero_s16v, 48, block); vec_st(zero_s16v, 64, block); vec_st(zero_s16v, 80, block); vec_st(zero_s16v, 96, block); vec_st(zero_s16v, 112, block); } static void add_bytes_altivec(uint8_t *dst, uint8_t *src, int w) { register int i; register vector unsigned char vdst, vsrc; /* dst and src are 16 bytes-aligned (guaranteed) */ for (i = 0 ; (i + 15) < w ; i+=16) { vdst = vec_ld(i, (unsigned char*)dst); vsrc = vec_ld(i, (unsigned char*)src); vdst = vec_add(vsrc, vdst); vec_st(vdst, i, (unsigned char*)dst); } /* if w is not a multiple of 16 */ for (; (i < w) ; i++) { dst[i] = src[i]; } } /* next one assumes that ((line_size % 16) == 0) */ void put_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h) { register vector unsigned char pixelsv1, pixelsv2; register vector unsigned char pixelsv1B, pixelsv2B; register vector unsigned char pixelsv1C, pixelsv2C; register vector unsigned char pixelsv1D, pixelsv2D; register vector unsigned char perm = vec_lvsl(0, pixels); int i; register int line_size_2 = line_size << 1; register int line_size_3 = line_size + line_size_2; register int line_size_4 = line_size << 2; // hand-unrolling the loop by 4 gains about 15% // mininum execution time goes from 74 to 60 cycles // it's faster than -funroll-loops, but using // -funroll-loops w/ this is bad - 74 cycles again. // all this is on a 7450, tuning for the 7450 for (i = 0; i < h; i += 4) { pixelsv1 = vec_ld( 0, pixels); pixelsv2 = vec_ld(15, pixels); pixelsv1B = vec_ld(line_size, pixels); pixelsv2B = vec_ld(15 + line_size, pixels); pixelsv1C = vec_ld(line_size_2, pixels); pixelsv2C = vec_ld(15 + line_size_2, pixels); pixelsv1D = vec_ld(line_size_3, pixels); pixelsv2D = vec_ld(15 + line_size_3, pixels); vec_st(vec_perm(pixelsv1, pixelsv2, perm), 0, (unsigned char*)block); vec_st(vec_perm(pixelsv1B, pixelsv2B, perm), line_size, (unsigned char*)block); vec_st(vec_perm(pixelsv1C, pixelsv2C, perm), line_size_2, (unsigned char*)block); vec_st(vec_perm(pixelsv1D, pixelsv2D, perm), line_size_3, (unsigned char*)block); pixels+=line_size_4; block +=line_size_4; } } /* next one assumes that ((line_size % 16) == 0) */ #define op_avg(a,b) a = ( ((a)|(b)) - ((((a)^(b))&0xFEFEFEFEUL)>>1) ) void avg_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h) { register vector unsigned char pixelsv1, pixelsv2, pixelsv, blockv; register vector unsigned char perm = vec_lvsl(0, pixels); int i; for (i = 0; i < h; i++) { pixelsv1 = vec_ld( 0, pixels); pixelsv2 = vec_ld(16,pixels); blockv = vec_ld(0, block); pixelsv = vec_perm(pixelsv1, pixelsv2, perm); blockv = vec_avg(blockv,pixelsv); vec_st(blockv, 0, (unsigned char*)block); pixels+=line_size; block +=line_size; } } /* next one assumes that ((line_size % 8) == 0) */ static void avg_pixels8_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h) { register vector unsigned char pixelsv1, pixelsv2, pixelsv, blockv; int i; for (i = 0; i < h; i++) { /* block is 8 bytes-aligned, so we're either in the left block (16 bytes-aligned) or in the right block (not) */ int rightside = ((unsigned long)block & 0x0000000F); blockv = vec_ld(0, block); pixelsv1 = vec_ld( 0, pixels); pixelsv2 = vec_ld(16, pixels); pixelsv = vec_perm(pixelsv1, pixelsv2, vec_lvsl(0, pixels)); if (rightside) { pixelsv = vec_perm(blockv, pixelsv, vcprm(0,1,s0,s1)); } else { pixelsv = vec_perm(blockv, pixelsv, vcprm(s0,s1,2,3)); } blockv = vec_avg(blockv, pixelsv); vec_st(blockv, 0, block); pixels += line_size; block += line_size; } } /* next one assumes that ((line_size % 8) == 0) */ static void put_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h) { register int i; register vector unsigned char pixelsv1, pixelsv2, pixelsavg; register vector unsigned char blockv, temp1, temp2; register vector unsigned short pixelssum1, pixelssum2, temp3; register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0); register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2); temp1 = vec_ld(0, pixels); temp2 = vec_ld(16, pixels); pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels)); if ((((unsigned long)pixels) & 0x0000000F) == 0x0000000F) { pixelsv2 = temp2; } else { pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels)); } pixelsv1 = vec_mergeh(vczero, pixelsv1); pixelsv2 = vec_mergeh(vczero, pixelsv2); pixelssum1 = vec_add((vector unsigned short)pixelsv1, (vector unsigned short)pixelsv2); pixelssum1 = vec_add(pixelssum1, vctwo); for (i = 0; i < h ; i++) { int rightside = ((unsigned long)block & 0x0000000F); blockv = vec_ld(0, block); temp1 = vec_ld(line_size, pixels); temp2 = vec_ld(line_size + 16, pixels); pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels)); if (((((unsigned long)pixels) + line_size) & 0x0000000F) == 0x0000000F) { pixelsv2 = temp2; } else { pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels)); } pixelsv1 = vec_mergeh(vczero, pixelsv1); pixelsv2 = vec_mergeh(vczero, pixelsv2); pixelssum2 = vec_add((vector unsigned short)pixelsv1, (vector unsigned short)pixelsv2); temp3 = vec_add(pixelssum1, pixelssum2); temp3 = vec_sra(temp3, vctwo); pixelssum1 = vec_add(pixelssum2, vctwo); pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero); if (rightside) { blockv = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1)); } else { blockv = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3)); } vec_st(blockv, 0, block); block += line_size; pixels += line_size; } } /* next one assumes that ((line_size % 8) == 0) */ static void put_no_rnd_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h) { register int i; register vector unsigned char pixelsv1, pixelsv2, pixelsavg; register vector unsigned char blockv, temp1, temp2; register vector unsigned short pixelssum1, pixelssum2, temp3; register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0); register const vector unsigned short vcone = (const vector unsigned short)vec_splat_u16(1); register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2); temp1 = vec_ld(0, pixels); temp2 = vec_ld(16, pixels); pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels)); if ((((unsigned long)pixels) & 0x0000000F) == 0x0000000F) { pixelsv2 = temp2; } else { pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels)); } pixelsv1 = vec_mergeh(vczero, pixelsv1); pixelsv2 = vec_mergeh(vczero, pixelsv2); pixelssum1 = vec_add((vector unsigned short)pixelsv1, (vector unsigned short)pixelsv2); pixelssum1 = vec_add(pixelssum1, vcone); for (i = 0; i < h ; i++) { int rightside = ((unsigned long)block & 0x0000000F); blockv = vec_ld(0, block); temp1 = vec_ld(line_size, pixels); temp2 = vec_ld(line_size + 16, pixels); pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels)); if (((((unsigned long)pixels) + line_size) & 0x0000000F) == 0x0000000F) { pixelsv2 = temp2; } else { pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels)); } pixelsv1 = vec_mergeh(vczero, pixelsv1); pixelsv2 = vec_mergeh(vczero, pixelsv2); pixelssum2 = vec_add((vector unsigned short)pixelsv1, (vector unsigned short)pixelsv2); temp3 = vec_add(pixelssum1, pixelssum2); temp3 = vec_sra(temp3, vctwo); pixelssum1 = vec_add(pixelssum2, vcone); pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero); if (rightside) { blockv = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1)); } else { blockv = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3)); } vec_st(blockv, 0, block); block += line_size; pixels += line_size; } } /* next one assumes that ((line_size % 16) == 0) */ static void put_pixels16_xy2_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h) { register int i; register vector unsigned char pixelsv1, pixelsv2, pixelsv3, pixelsv4; register vector unsigned char blockv, temp1, temp2; register vector unsigned short temp3, temp4, pixelssum1, pixelssum2, pixelssum3, pixelssum4; register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0); register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2); temp1 = vec_ld(0, pixels); temp2 = vec_ld(16, pixels); pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels)); if ((((unsigned long)pixels) & 0x0000000F) == 0x0000000F) { pixelsv2 = temp2; } else { pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels)); } pixelsv3 = vec_mergel(vczero, pixelsv1); pixelsv4 = vec_mergel(vczero, pixelsv2); pixelsv1 = vec_mergeh(vczero, pixelsv1); pixelsv2 = vec_mergeh(vczero, pixelsv2); pixelssum3 = vec_add((vector unsigned short)pixelsv3, (vector unsigned short)pixelsv4); pixelssum3 = vec_add(pixelssum3, vctwo); pixelssum1 = vec_add((vector unsigned short)pixelsv1, (vector unsigned short)pixelsv2); pixelssum1 = vec_add(pixelssum1, vctwo); for (i = 0; i < h ; i++) { blockv = vec_ld(0, block); temp1 = vec_ld(line_size, pixels); temp2 = vec_ld(line_size + 16, pixels); pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels)); if (((((unsigned long)pixels) + line_size) & 0x0000000F) == 0x0000000F) { pixelsv2 = temp2; } else { pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels)); } pixelsv3 = vec_mergel(vczero, pixelsv1); pixelsv4 = vec_mergel(vczero, pixelsv2); pixelsv1 = vec_mergeh(vczero, pixelsv1); pixelsv2 = vec_mergeh(vczero, pixelsv2); pixelssum4 = vec_add((vector unsigned short)pixelsv3, (vector unsigned short)pixelsv4); pixelssum2 = vec_add((vector unsigned short)pixelsv1, (vector unsigned short)pixelsv2); temp4 = vec_add(pixelssum3, pixelssum4); temp4 = vec_sra(temp4, vctwo); temp3 = vec_add(pixelssum1, pixelssum2); temp3 = vec_sra(temp3, vctwo); pixelssum3 = vec_add(pixelssum4, vctwo); pixelssum1 = vec_add(pixelssum2, vctwo); blockv = vec_packsu(temp3, temp4); vec_st(blockv, 0, block); block += line_size; pixels += line_size; } } /* next one assumes that ((line_size % 16) == 0) */ static void put_no_rnd_pixels16_xy2_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h) { register int i; register vector unsigned char pixelsv1, pixelsv2, pixelsv3, pixelsv4; register vector unsigned char blockv, temp1, temp2; register vector unsigned short temp3, temp4, pixelssum1, pixelssum2, pixelssum3, pixelssum4; register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0); register const vector unsigned short vcone = (const vector unsigned short)vec_splat_u16(1); register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2); temp1 = vec_ld(0, pixels); temp2 = vec_ld(16, pixels); pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels)); if ((((unsigned long)pixels) & 0x0000000F) == 0x0000000F) { pixelsv2 = temp2; } else { pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels)); } pixelsv3 = vec_mergel(vczero, pixelsv1); pixelsv4 = vec_mergel(vczero, pixelsv2); pixelsv1 = vec_mergeh(vczero, pixelsv1); pixelsv2 = vec_mergeh(vczero, pixelsv2); pixelssum3 = vec_add((vector unsigned short)pixelsv3, (vector unsigned short)pixelsv4); pixelssum3 = vec_add(pixelssum3, vcone); pixelssum1 = vec_add((vector unsigned short)pixelsv1, (vector unsigned short)pixelsv2); pixelssum1 = vec_add(pixelssum1, vcone); for (i = 0; i < h ; i++) { blockv = vec_ld(0, block); temp1 = vec_ld(line_size, pixels); temp2 = vec_ld(line_size + 16, pixels); pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels)); if (((((unsigned long)pixels) + line_size) & 0x0000000F) == 0x0000000F) { pixelsv2 = temp2; } else { pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels)); } pixelsv3 = vec_mergel(vczero, pixelsv1); pixelsv4 = vec_mergel(vczero, pixelsv2); pixelsv1 = vec_mergeh(vczero, pixelsv1); pixelsv2 = vec_mergeh(vczero, pixelsv2); pixelssum4 = vec_add((vector unsigned short)pixelsv3, (vector unsigned short)pixelsv4); pixelssum2 = vec_add((vector unsigned short)pixelsv1, (vector unsigned short)pixelsv2); temp4 = vec_add(pixelssum3, pixelssum4); temp4 = vec_sra(temp4, vctwo); temp3 = vec_add(pixelssum1, pixelssum2); temp3 = vec_sra(temp3, vctwo); pixelssum3 = vec_add(pixelssum4, vcone); pixelssum1 = vec_add(pixelssum2, vcone); blockv = vec_packsu(temp3, temp4); vec_st(blockv, 0, block); block += line_size; pixels += line_size; } } static int hadamard8_diff8x8_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h){ int sum; register const vector unsigned char vzero = (const vector unsigned char)vec_splat_u8(0); register vector signed short temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7; { register const vector signed short vprod1 =(const vector signed short) { 1,-1, 1,-1, 1,-1, 1,-1 }; register const vector signed short vprod2 =(const vector signed short) { 1, 1,-1,-1, 1, 1,-1,-1 }; register const vector signed short vprod3 =(const vector signed short) { 1, 1, 1, 1,-1,-1,-1,-1 }; register const vector unsigned char perm1 = (const vector unsigned char) {0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, 0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D}; register const vector unsigned char perm2 = (const vector unsigned char) {0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B}; register const vector unsigned char perm3 = (const vector unsigned char) {0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07}; #define ONEITERBUTTERFLY(i, res) \ { \ register vector unsigned char src1, src2, srcO; \ register vector unsigned char dst1, dst2, dstO; \ register vector signed short srcV, dstV; \ register vector signed short but0, but1, but2, op1, op2, op3; \ src1 = vec_ld(stride * i, src); \ src2 = vec_ld((stride * i) + 15, src); \ srcO = vec_perm(src1, src2, vec_lvsl(stride * i, src)); \ dst1 = vec_ld(stride * i, dst); \ dst2 = vec_ld((stride * i) + 15, dst); \ dstO = vec_perm(dst1, dst2, vec_lvsl(stride * i, dst)); \ /* promote the unsigned chars to signed shorts */ \ /* we're in the 8x8 function, we only care for the first 8 */ \ srcV = (vector signed short)vec_mergeh((vector signed char)vzero, \ (vector signed char)srcO); \ dstV = (vector signed short)vec_mergeh((vector signed char)vzero, \ (vector signed char)dstO); \ /* subtractions inside the first butterfly */ \ but0 = vec_sub(srcV, dstV); \ op1 = vec_perm(but0, but0, perm1); \ but1 = vec_mladd(but0, vprod1, op1); \ op2 = vec_perm(but1, but1, perm2); \ but2 = vec_mladd(but1, vprod2, op2); \ op3 = vec_perm(but2, but2, perm3); \ res = vec_mladd(but2, vprod3, op3); \ } ONEITERBUTTERFLY(0, temp0); ONEITERBUTTERFLY(1, temp1); ONEITERBUTTERFLY(2, temp2); ONEITERBUTTERFLY(3, temp3); ONEITERBUTTERFLY(4, temp4); ONEITERBUTTERFLY(5, temp5); ONEITERBUTTERFLY(6, temp6); ONEITERBUTTERFLY(7, temp7); } #undef ONEITERBUTTERFLY { register vector signed int vsum; register vector signed short line0 = vec_add(temp0, temp1); register vector signed short line1 = vec_sub(temp0, temp1); register vector signed short line2 = vec_add(temp2, temp3); register vector signed short line3 = vec_sub(temp2, temp3); register vector signed short line4 = vec_add(temp4, temp5); register vector signed short line5 = vec_sub(temp4, temp5); register vector signed short line6 = vec_add(temp6, temp7); register vector signed short line7 = vec_sub(temp6, temp7); register vector signed short line0B = vec_add(line0, line2); register vector signed short line2B = vec_sub(line0, line2); register vector signed short line1B = vec_add(line1, line3); register vector signed short line3B = vec_sub(line1, line3); register vector signed short line4B = vec_add(line4, line6); register vector signed short line6B = vec_sub(line4, line6); register vector signed short line5B = vec_add(line5, line7); register vector signed short line7B = vec_sub(line5, line7); register vector signed short line0C = vec_add(line0B, line4B); register vector signed short line4C = vec_sub(line0B, line4B); register vector signed short line1C = vec_add(line1B, line5B); register vector signed short line5C = vec_sub(line1B, line5B); register vector signed short line2C = vec_add(line2B, line6B); register vector signed short line6C = vec_sub(line2B, line6B); register vector signed short line3C = vec_add(line3B, line7B); register vector signed short line7C = vec_sub(line3B, line7B); vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0)); vsum = vec_sum4s(vec_abs(line1C), vsum); vsum = vec_sum4s(vec_abs(line2C), vsum); vsum = vec_sum4s(vec_abs(line3C), vsum); vsum = vec_sum4s(vec_abs(line4C), vsum); vsum = vec_sum4s(vec_abs(line5C), vsum); vsum = vec_sum4s(vec_abs(line6C), vsum); vsum = vec_sum4s(vec_abs(line7C), vsum); vsum = vec_sums(vsum, (vector signed int)vzero); vsum = vec_splat(vsum, 3); vec_ste(vsum, 0, &sum); } return sum; } /* 16x8 works with 16 elements; it allows to avoid replicating loads, and give the compiler more rooms for scheduling. It's only used from inside hadamard8_diff16_altivec. Unfortunately, it seems gcc-3.3 is a bit dumb, and the compiled code has a LOT of spill code, it seems gcc (unlike xlc) cannot keep everything in registers by itself. The following code include hand-made registers allocation. It's not clean, but on a 7450 the resulting code is much faster (best case fall from 700+ cycles to 550). xlc doesn't add spill code, but it doesn't know how to schedule for the 7450, and its code isn't much faster than gcc-3.3 on the 7450 (but uses 25% less instructions...) On the 970, the hand-made RA is still a win (around 690 vs. around 780), but xlc goes to around 660 on the regular C code... */ static int hadamard8_diff16x8_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h) { int sum; register vector signed short temp0 __asm__ ("v0"), temp1 __asm__ ("v1"), temp2 __asm__ ("v2"), temp3 __asm__ ("v3"), temp4 __asm__ ("v4"), temp5 __asm__ ("v5"), temp6 __asm__ ("v6"), temp7 __asm__ ("v7"); register vector signed short temp0S __asm__ ("v8"), temp1S __asm__ ("v9"), temp2S __asm__ ("v10"), temp3S __asm__ ("v11"), temp4S __asm__ ("v12"), temp5S __asm__ ("v13"), temp6S __asm__ ("v14"), temp7S __asm__ ("v15"); register const vector unsigned char vzero __asm__ ("v31") = (const vector unsigned char)vec_splat_u8(0); { register const vector signed short vprod1 __asm__ ("v16") = (const vector signed short){ 1,-1, 1,-1, 1,-1, 1,-1 }; register const vector signed short vprod2 __asm__ ("v17") = (const vector signed short){ 1, 1,-1,-1, 1, 1,-1,-1 }; register const vector signed short vprod3 __asm__ ("v18") = (const vector signed short){ 1, 1, 1, 1,-1,-1,-1,-1 }; register const vector unsigned char perm1 __asm__ ("v19") = (const vector unsigned char) {0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, 0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D}; register const vector unsigned char perm2 __asm__ ("v20") = (const vector unsigned char) {0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, 0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B}; register const vector unsigned char perm3 __asm__ ("v21") = (const vector unsigned char) {0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07}; #define ONEITERBUTTERFLY(i, res1, res2) \ { \ register vector unsigned char src1 __asm__ ("v22"), \ src2 __asm__ ("v23"), \ dst1 __asm__ ("v24"), \ dst2 __asm__ ("v25"), \ srcO __asm__ ("v22"), \ dstO __asm__ ("v23"); \ \ register vector signed short srcV __asm__ ("v24"), \ dstV __asm__ ("v25"), \ srcW __asm__ ("v26"), \ dstW __asm__ ("v27"), \ but0 __asm__ ("v28"), \ but0S __asm__ ("v29"), \ op1 __asm__ ("v30"), \ but1 __asm__ ("v22"), \ op1S __asm__ ("v23"), \ but1S __asm__ ("v24"), \ op2 __asm__ ("v25"), \ but2 __asm__ ("v26"), \ op2S __asm__ ("v27"), \ but2S __asm__ ("v28"), \ op3 __asm__ ("v29"), \ op3S __asm__ ("v30"); \ \ src1 = vec_ld(stride * i, src); \ src2 = vec_ld((stride * i) + 16, src); \ srcO = vec_perm(src1, src2, vec_lvsl(stride * i, src)); \ dst1 = vec_ld(stride * i, dst); \ dst2 = vec_ld((stride * i) + 16, dst); \ dstO = vec_perm(dst1, dst2, vec_lvsl(stride * i, dst)); \ /* promote the unsigned chars to signed shorts */ \ srcV = (vector signed short)vec_mergeh((vector signed char)vzero, \ (vector signed char)srcO); \ dstV = (vector signed short)vec_mergeh((vector signed char)vzero, \ (vector signed char)dstO); \ srcW = (vector signed short)vec_mergel((vector signed char)vzero, \ (vector signed char)srcO); \ dstW = (vector signed short)vec_mergel((vector signed char)vzero, \ (vector signed char)dstO); \ /* subtractions inside the first butterfly */ \ but0 = vec_sub(srcV, dstV); \ but0S = vec_sub(srcW, dstW); \ op1 = vec_perm(but0, but0, perm1); \ but1 = vec_mladd(but0, vprod1, op1); \ op1S = vec_perm(but0S, but0S, perm1); \ but1S = vec_mladd(but0S, vprod1, op1S); \ op2 = vec_perm(but1, but1, perm2); \ but2 = vec_mladd(but1, vprod2, op2); \ op2S = vec_perm(but1S, but1S, perm2); \ but2S = vec_mladd(but1S, vprod2, op2S); \ op3 = vec_perm(but2, but2, perm3); \ res1 = vec_mladd(but2, vprod3, op3); \ op3S = vec_perm(but2S, but2S, perm3); \ res2 = vec_mladd(but2S, vprod3, op3S); \ } ONEITERBUTTERFLY(0, temp0, temp0S); ONEITERBUTTERFLY(1, temp1, temp1S); ONEITERBUTTERFLY(2, temp2, temp2S); ONEITERBUTTERFLY(3, temp3, temp3S); ONEITERBUTTERFLY(4, temp4, temp4S); ONEITERBUTTERFLY(5, temp5, temp5S); ONEITERBUTTERFLY(6, temp6, temp6S); ONEITERBUTTERFLY(7, temp7, temp7S); } #undef ONEITERBUTTERFLY { register vector signed int vsum; register vector signed short line0S, line1S, line2S, line3S, line4S, line5S, line6S, line7S, line0BS,line2BS, line1BS,line3BS,line4BS,line6BS,line5BS, line7BS,line0CS,line4CS,line1CS,line5CS, line2CS,line6CS,line3CS,line7CS; register vector signed short line0 = vec_add(temp0, temp1); register vector signed short line1 = vec_sub(temp0, temp1); register vector signed short line2 = vec_add(temp2, temp3); register vector signed short line3 = vec_sub(temp2, temp3); register vector signed short line4 = vec_add(temp4, temp5); register vector signed short line5 = vec_sub(temp4, temp5); register vector signed short line6 = vec_add(temp6, temp7); register vector signed short line7 = vec_sub(temp6, temp7); register vector signed short line0B = vec_add(line0, line2); register vector signed short line2B = vec_sub(line0, line2); register vector signed short line1B = vec_add(line1, line3); register vector signed short line3B = vec_sub(line1, line3); register vector signed short line4B = vec_add(line4, line6); register vector signed short line6B = vec_sub(line4, line6); register vector signed short line5B = vec_add(line5, line7); register vector signed short line7B = vec_sub(line5, line7); register vector signed short line0C = vec_add(line0B, line4B); register vector signed short line4C = vec_sub(line0B, line4B); register vector signed short line1C = vec_add(line1B, line5B); register vector signed short line5C = vec_sub(line1B, line5B); register vector signed short line2C = vec_add(line2B, line6B); register vector signed short line6C = vec_sub(line2B, line6B); register vector signed short line3C = vec_add(line3B, line7B); register vector signed short line7C = vec_sub(line3B, line7B); vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0)); vsum = vec_sum4s(vec_abs(line1C), vsum); vsum = vec_sum4s(vec_abs(line2C), vsum); vsum = vec_sum4s(vec_abs(line3C), vsum); vsum = vec_sum4s(vec_abs(line4C), vsum); vsum = vec_sum4s(vec_abs(line5C), vsum); vsum = vec_sum4s(vec_abs(line6C), vsum); vsum = vec_sum4s(vec_abs(line7C), vsum); line0S = vec_add(temp0S, temp1S); line1S = vec_sub(temp0S, temp1S); line2S = vec_add(temp2S, temp3S); line3S = vec_sub(temp2S, temp3S); line4S = vec_add(temp4S, temp5S); line5S = vec_sub(temp4S, temp5S); line6S = vec_add(temp6S, temp7S); line7S = vec_sub(temp6S, temp7S); line0BS = vec_add(line0S, line2S); line2BS = vec_sub(line0S, line2S); line1BS = vec_add(line1S, line3S); line3BS = vec_sub(line1S, line3S); line4BS = vec_add(line4S, line6S); line6BS = vec_sub(line4S, line6S); line5BS = vec_add(line5S, line7S); line7BS = vec_sub(line5S, line7S); line0CS = vec_add(line0BS, line4BS); line4CS = vec_sub(line0BS, line4BS); line1CS = vec_add(line1BS, line5BS); line5CS = vec_sub(line1BS, line5BS); line2CS = vec_add(line2BS, line6BS); line6CS = vec_sub(line2BS, line6BS); line3CS = vec_add(line3BS, line7BS); line7CS = vec_sub(line3BS, line7BS); vsum = vec_sum4s(vec_abs(line0CS), vsum); vsum = vec_sum4s(vec_abs(line1CS), vsum); vsum = vec_sum4s(vec_abs(line2CS), vsum); vsum = vec_sum4s(vec_abs(line3CS), vsum); vsum = vec_sum4s(vec_abs(line4CS), vsum); vsum = vec_sum4s(vec_abs(line5CS), vsum); vsum = vec_sum4s(vec_abs(line6CS), vsum); vsum = vec_sum4s(vec_abs(line7CS), vsum); vsum = vec_sums(vsum, (vector signed int)vzero); vsum = vec_splat(vsum, 3); vec_ste(vsum, 0, &sum); } return sum; } static int hadamard8_diff16_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h){ int score; score = hadamard8_diff16x8_altivec(s, dst, src, stride, 8); if (h==16) { dst += 8*stride; src += 8*stride; score += hadamard8_diff16x8_altivec(s, dst, src, stride, 8); } return score; } static void vorbis_inverse_coupling_altivec(float *mag, float *ang, int blocksize) { int i; vector float m, a; vector bool int t0, t1; const vector unsigned int v_31 = //XXX vec_add(vec_add(vec_splat_u32(15),vec_splat_u32(15)),vec_splat_u32(1)); for (i = 0; i < blocksize; i += 4) { m = vec_ld(0, mag+i); a = vec_ld(0, ang+i); t0 = vec_cmple(m, (vector float)vec_splat_u32(0)); t1 = vec_cmple(a, (vector float)vec_splat_u32(0)); a = vec_xor(a, (vector float) vec_sl((vector unsigned int)t0, v_31)); t0 = (vector bool int)vec_and(a, t1); t1 = (vector bool int)vec_andc(a, t1); a = vec_sub(m, (vector float)t1); m = vec_add(m, (vector float)t0); vec_stl(a, 0, ang+i); vec_stl(m, 0, mag+i); } } /* next one assumes that ((line_size % 8) == 0) */ static void avg_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h) { register int i; register vector unsigned char pixelsv1, pixelsv2, pixelsavg; register vector unsigned char blockv, temp1, temp2, blocktemp; register vector unsigned short pixelssum1, pixelssum2, temp3; register const vector unsigned char vczero = (const vector unsigned char) vec_splat_u8(0); register const vector unsigned short vctwo = (const vector unsigned short) vec_splat_u16(2); temp1 = vec_ld(0, pixels); temp2 = vec_ld(16, pixels); pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels)); if ((((unsigned long)pixels) & 0x0000000F) == 0x0000000F) { pixelsv2 = temp2; } else { pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels)); } pixelsv1 = vec_mergeh(vczero, pixelsv1); pixelsv2 = vec_mergeh(vczero, pixelsv2); pixelssum1 = vec_add((vector unsigned short)pixelsv1, (vector unsigned short)pixelsv2); pixelssum1 = vec_add(pixelssum1, vctwo); for (i = 0; i < h ; i++) { int rightside = ((unsigned long)block & 0x0000000F); blockv = vec_ld(0, block); temp1 = vec_ld(line_size, pixels); temp2 = vec_ld(line_size + 16, pixels); pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels)); if (((((unsigned long)pixels) + line_size) & 0x0000000F) == 0x0000000F) { pixelsv2 = temp2; } else { pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels)); } pixelsv1 = vec_mergeh(vczero, pixelsv1); pixelsv2 = vec_mergeh(vczero, pixelsv2); pixelssum2 = vec_add((vector unsigned short)pixelsv1, (vector unsigned short)pixelsv2); temp3 = vec_add(pixelssum1, pixelssum2); temp3 = vec_sra(temp3, vctwo); pixelssum1 = vec_add(pixelssum2, vctwo); pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero); if (rightside) { blocktemp = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1)); } else { blocktemp = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3)); } blockv = vec_avg(blocktemp, blockv); vec_st(blockv, 0, block); block += line_size; pixels += line_size; } } void dsputil_init_altivec(DSPContext* c, AVCodecContext *avctx) { const int high_bit_depth = avctx->bits_per_raw_sample > 8; c->pix_abs[0][1] = sad16_x2_altivec; c->pix_abs[0][2] = sad16_y2_altivec; c->pix_abs[0][3] = sad16_xy2_altivec; c->pix_abs[0][0] = sad16_altivec; c->pix_abs[1][0] = sad8_altivec; c->sad[0]= sad16_altivec; c->sad[1]= sad8_altivec; c->pix_norm1 = pix_norm1_altivec; c->sse[1]= sse8_altivec; c->sse[0]= sse16_altivec; c->pix_sum = pix_sum_altivec; c->diff_pixels = diff_pixels_altivec; c->add_bytes= add_bytes_altivec; if (!high_bit_depth) { c->get_pixels = get_pixels_altivec; c->clear_block = clear_block_altivec; c->put_pixels_tab[0][0] = put_pixels16_altivec; /* the two functions do the same thing, so use the same code */ c->put_no_rnd_pixels_tab[0][0] = put_pixels16_altivec; c->avg_pixels_tab[0][0] = avg_pixels16_altivec; c->avg_pixels_tab[1][0] = avg_pixels8_altivec; c->avg_pixels_tab[1][3] = avg_pixels8_xy2_altivec; c->put_pixels_tab[1][3] = put_pixels8_xy2_altivec; c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels8_xy2_altivec; c->put_pixels_tab[0][3] = put_pixels16_xy2_altivec; c->put_no_rnd_pixels_tab[0][3] = put_no_rnd_pixels16_xy2_altivec; } c->hadamard8_diff[0] = hadamard8_diff16_altivec; c->hadamard8_diff[1] = hadamard8_diff8x8_altivec; if (CONFIG_VORBIS_DECODER) c->vorbis_inverse_coupling = vorbis_inverse_coupling_altivec; }