| /* |
| * Copyright (c) 2002 Brian Foley |
| * Copyright (c) 2002 Dieter Shirley |
| * Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; 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 <altivec.h> |
| #endif |
| #include "libavutil/attributes.h" |
| #include "libavutil/ppc/types_altivec.h" |
| #include "libavutil/ppc/util_altivec.h" |
| #include "libavcodec/dsputil.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 perm1 = vec_lvsl(0, pix2); |
| vector unsigned char perm2 = vec_add(perm1, vec_splat_u8(1)); |
| vector unsigned char pix2l, pix2r; |
| 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] */ |
| pix1v = vec_ld( 0, pix1); |
| pix2l = vec_ld( 0, pix2); |
| pix2r = vec_ld(16, pix2); |
| pix2v = vec_perm(pix2l, pix2r, perm1); |
| pix2iv = vec_perm(pix2l, pix2r, perm2); |
| |
| /* 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 perm = vec_lvsl(0, pix2); |
| vector unsigned char pix2l, pix2r; |
| 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 */ |
| pix2l = vec_ld( 0, pix2); |
| pix2r = vec_ld(15, pix2); |
| pix2v = vec_perm(pix2l, pix2r, perm); |
| |
| 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] */ |
| pix1v = vec_ld(0, pix1); |
| |
| pix2l = vec_ld( 0, pix3); |
| pix2r = vec_ld(15, pix3); |
| pix3v = vec_perm(pix2l, pix2r, perm); |
| |
| /* 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 avgv, t5; |
| vector unsigned char perm1 = vec_lvsl(0, pix2); |
| vector unsigned char perm2 = vec_add(perm1, vec_splat_u8(1)); |
| vector unsigned char pix2l, pix2r; |
| 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 */ |
| pix2l = vec_ld( 0, pix2); |
| pix2r = vec_ld(16, pix2); |
| pix2v = vec_perm(pix2l, pix2r, perm1); |
| pix2iv = vec_perm(pix2l, pix2r, perm2); |
| |
| 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] */ |
| pix1v = vec_ld(0, pix1); |
| |
| pix2l = vec_ld( 0, pix3); |
| pix2r = vec_ld(16, pix3); |
| pix3v = vec_perm(pix2l, pix2r, perm1); |
| pix3iv = vec_perm(pix2l, pix2r, perm2); |
| |
| /* 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 perm = vec_lvsl(0, pix2); |
| 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 */ |
| vector unsigned char pix2l = vec_ld( 0, pix2); |
| vector unsigned char pix2r = vec_ld(15, pix2); |
| t1 = vec_ld(0, pix1); |
| t2 = vec_perm(pix2l, pix2r, perm); |
| |
| /* 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); |
| const vector unsigned char permclear = (vector unsigned char){255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0}; |
| vector unsigned char perm1 = vec_lvsl(0, pix1); |
| vector unsigned char perm2 = vec_lvsl(0, pix2); |
| 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 |
| Since we're reading 16 pixels, and actually only want 8, |
| mask out the last 8 pixels. The 0s don't change the sum. */ |
| vector unsigned char pix1l = vec_ld(0, pix1); |
| vector unsigned char pix1r = vec_ld(7, pix1); |
| vector unsigned char pix2l = vec_ld(0, pix2); |
| vector unsigned char pix2r = vec_ld(7, pix2); |
| t1 = vec_and(vec_perm(pix1l, pix1r, perm1), permclear); |
| t2 = vec_and(vec_perm(pix2l, pix2r, 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 perm = vec_lvsl(0, pix); |
| 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 */ |
| vector unsigned char pixl = vec_ld( 0, pix); |
| vector unsigned char pixr = vec_ld(15, pix); |
| pixv = vec_perm(pixl, pixr, perm); |
| |
| /* 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); |
| const vector unsigned char permclear = (vector unsigned char){255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0}; |
| vector unsigned char perm1 = vec_lvsl(0, pix1); |
| vector unsigned char perm2 = vec_lvsl(0, pix2); |
| 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 |
| Since we're reading 16 pixels, and actually only want 8, |
| mask out the last 8 pixels. The 0s don't change the sum. */ |
| vector unsigned char pix1l = vec_ld(0, pix1); |
| vector unsigned char pix1r = vec_ld(7, pix1); |
| vector unsigned char pix2l = vec_ld(0, pix2); |
| vector unsigned char pix2r = vec_ld(7, pix2); |
| t1 = vec_and(vec_perm(pix1l, pix1r, perm1), permclear); |
| t2 = vec_and(vec_perm(pix2l, pix2r, 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 perm = vec_lvsl(0, pix2); |
| 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 */ |
| vector unsigned char pix2l = vec_ld( 0, pix2); |
| vector unsigned char pix2r = vec_ld(15, pix2); |
| t1 = vec_ld(0, pix1); |
| t2 = vec_perm(pix2l, pix2r, perm); |
| |
| /* 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 = vec_lvsl(0, pix); |
| 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 */ |
| vector unsigned char pixl = vec_ld( 0, pix); |
| vector unsigned char pixr = vec_ld(15, pix); |
| t1 = vec_perm(pixl, pixr, 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(int16_t *restrict block, const uint8_t *pixels, int line_size) |
| { |
| int i; |
| vector unsigned char perm = vec_lvsl(0, pixels); |
| vector unsigned char bytes; |
| 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. |
| vector unsigned char pixl = vec_ld(0, pixels); |
| vector unsigned char pixr = vec_ld(7, pixels); |
| bytes = vec_perm(pixl, pixr, 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(int16_t *restrict block, const uint8_t *s1, |
| const uint8_t *s2, int stride) |
| { |
| int i; |
| vector unsigned char perm1 = vec_lvsl(0, s1); |
| vector unsigned char perm2 = vec_lvsl(0, s2); |
| vector unsigned char bytes, pixl, pixr; |
| 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. |
| pixl = vec_ld( 0, s1); |
| pixr = vec_ld(15, s1); |
| bytes = vec_perm(pixl, pixr, perm1); |
| |
| // convert the bytes into shorts |
| shorts1 = (vector signed short)vec_mergeh(zero, bytes); |
| |
| // Do the same for the second block of pixels |
| pixl = vec_ld( 0, s2); |
| pixr = vec_ld(15, s2); |
| bytes = vec_perm(pixl, pixr, perm2); |
| |
| // 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. |
| pixl = vec_ld( 0, s1); |
| pixr = vec_ld(15, s1); |
| bytes = vec_perm(pixl, pixr, perm1); |
| |
| // convert the bytes into shorts |
| shorts1 = (vector signed short)vec_mergeh(zero, bytes); |
| |
| // Do the same for the second block of pixels |
| pixl = vec_ld( 0, s2); |
| pixr = vec_ld(15, s2); |
| bytes = vec_perm(pixl, pixr, perm2); |
| |
| // 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(int16_t *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]; |
| } |
| } |
| |
| 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; |
| } |
| |
| av_cold void ff_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->hadamard8_diff[0] = hadamard8_diff16_altivec; |
| c->hadamard8_diff[1] = hadamard8_diff8x8_altivec; |
| } |
