| /* |
| * 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/cpu.h" |
| #include "libavutil/ppc/cpu.h" |
| #include "libavutil/ppc/types_altivec.h" |
| #include "libavutil/ppc/util_altivec.h" |
| #include "libavcodec/avcodec.h" |
| #include "libavcodec/mpegvideo.h" |
| #include "libavcodec/me_cmp.h" |
| |
| #if HAVE_ALTIVEC |
| |
| #if HAVE_BIGENDIAN |
| #define GET_PERM(per1, per2, pix) {\ |
| per1 = vec_lvsl(0, pix);\ |
| per2 = vec_add(per1, vec_splat_u8(1));\ |
| } |
| #define LOAD_PIX(v, iv, pix, per1, per2) {\ |
| vector unsigned char pix2l = vec_ld(0, pix);\ |
| vector unsigned char pix2r = vec_ld(16, pix);\ |
| v = vec_perm(pix2l, pix2r, per1);\ |
| iv = vec_perm(pix2l, pix2r, per2);\ |
| } |
| #else |
| #define GET_PERM(per1, per2, pix) {} |
| #define LOAD_PIX(v, iv, pix, per1, per2) {\ |
| v = vec_vsx_ld(0, pix);\ |
| iv = vec_vsx_ld(1, pix);\ |
| } |
| #endif |
| static int sad16_x2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
| ptrdiff_t stride, int h) |
| { |
| int i; |
| int __attribute__((aligned(16))) s = 0; |
| const vector unsigned char zero = |
| (const vector unsigned char) vec_splat_u8(0); |
| vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); |
| vector signed int sumdiffs; |
| vector unsigned char perm1, perm2, pix2v, pix2iv; |
| |
| GET_PERM(perm1, perm2, pix2); |
| 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] */ |
| vector unsigned char pix1v = vec_ld(0, pix1); |
| LOAD_PIX(pix2v, pix2iv, pix2, perm1, perm2); |
| |
| /* Calculate the average vector. */ |
| vector unsigned char avgv = vec_avg(pix2v, pix2iv); |
| |
| /* Calculate a sum of abs differences vector. */ |
| vector unsigned char 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 += stride; |
| pix2 += stride; |
| } |
| /* 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(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
| ptrdiff_t stride, int h) |
| { |
| int i; |
| int __attribute__((aligned(16))) s = 0; |
| const vector unsigned char zero = |
| (const vector unsigned char) vec_splat_u8(0); |
| vector unsigned char pix1v, pix3v, avgv, t5; |
| vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); |
| vector signed int sumdiffs; |
| |
| uint8_t *pix3 = pix2 + stride; |
| |
| /* Due to the fact that pix3 = pix2 + stride, 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. */ |
| vector unsigned char pix2v = VEC_LD(0, pix2); |
| |
| 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); |
| pix3v = VEC_LD(0, pix3); |
| |
| /* 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 += stride; |
| pix2v = pix3v; |
| pix3 += stride; |
| } |
| |
| /* 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(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
| ptrdiff_t stride, int h) |
| { |
| int i; |
| int __attribute__((aligned(16))) s = 0; |
| uint8_t *pix3 = pix2 + stride; |
| 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 pix1v, pix3v, pix3iv; |
| vector unsigned short pix3lv, pix3hv, pix3ilv, pix3ihv; |
| vector unsigned short avghv, avglv; |
| vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); |
| vector signed int sumdiffs; |
| vector unsigned char perm1, perm2, pix2v, pix2iv; |
| GET_PERM(perm1, perm2, pix2); |
| |
| /* Due to the fact that pix3 = pix2 + stride, 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. */ |
| LOAD_PIX(pix2v, pix2iv, pix2, perm1, perm2); |
| vector unsigned short pix2hv = |
| (vector unsigned short) VEC_MERGEH(zero, pix2v); |
| vector unsigned short pix2lv = |
| (vector unsigned short) VEC_MERGEL(zero, pix2v); |
| vector unsigned short pix2ihv = |
| (vector unsigned short) VEC_MERGEH(zero, pix2iv); |
| vector unsigned short pix2ilv = |
| (vector unsigned short) VEC_MERGEL(zero, pix2iv); |
| |
| vector unsigned short t1 = vec_add(pix2hv, pix2ihv); |
| vector unsigned short t2 = vec_add(pix2lv, pix2ilv); |
| vector unsigned short t3, t4; |
| |
| 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); |
| LOAD_PIX(pix3v, pix3iv, pix3, perm1, 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 += stride; |
| pix3 += stride; |
| /* 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(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
| ptrdiff_t stride, int h) |
| { |
| int i; |
| int __attribute__((aligned(16))) s; |
| const vector unsigned int zero = |
| (const vector unsigned int) vec_splat_u32(0); |
| vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); |
| vector signed int sumdiffs; |
| |
| for (i = 0; i < h; i++) { |
| /* Read potentially unaligned pixels into t1 and t2. */ |
| vector unsigned char t1 =vec_ld(0, pix1); |
| vector unsigned char t2 = VEC_LD(0, pix2); |
| |
| /* Calculate a sum of abs differences vector. */ |
| vector unsigned char t3 = vec_max(t1, t2); |
| vector unsigned char t4 = vec_min(t1, t2); |
| vector unsigned char t5 = vec_sub(t3, t4); |
| |
| /* Add each 4 pixel group together and put 4 results into sad. */ |
| sad = vec_sum4s(t5, sad); |
| |
| pix1 += stride; |
| pix2 += stride; |
| } |
| |
| /* 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(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
| ptrdiff_t stride, int h) |
| { |
| int i; |
| int __attribute__((aligned(16))) 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 int sad = (vector unsigned int) vec_splat_u32(0); |
| vector signed int sumdiffs; |
| |
| 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 pix2l = VEC_LD(0, pix2); |
| vector unsigned char t1 = vec_and(pix1l, permclear); |
| vector unsigned char t2 = vec_and(pix2l, permclear); |
| |
| /* Calculate a sum of abs differences vector. */ |
| vector unsigned char t3 = vec_max(t1, t2); |
| vector unsigned char t4 = vec_min(t1, t2); |
| vector unsigned char t5 = vec_sub(t3, t4); |
| |
| /* Add each 4 pixel group together and put 4 results into sad. */ |
| sad = vec_sum4s(t5, sad); |
| |
| pix1 += stride; |
| pix2 += stride; |
| } |
| |
| /* 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; |
| } |
| |
| /* Sum of Squared Errors for an 8x8 block, AltiVec-enhanced. |
| * It's the sad8_altivec code above w/ squaring added. */ |
| static int sse8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
| ptrdiff_t stride, int h) |
| { |
| int i; |
| int __attribute__((aligned(16))) 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 int sum = (vector unsigned int) vec_splat_u32(0); |
| vector signed int sumsqr; |
| |
| 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 t1 = vec_and(VEC_LD(0, pix1), permclear); |
| vector unsigned char t2 = vec_and(VEC_LD(0, pix2), 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. */ |
| vector unsigned char t3 = vec_max(t1, t2); |
| vector unsigned char t4 = vec_min(t1, t2); |
| vector unsigned char t5 = vec_sub(t3, t4); |
| |
| /* Square the values and add them to our sum. */ |
| sum = vec_msum(t5, t5, sum); |
| |
| pix1 += stride; |
| pix2 += stride; |
| } |
| |
| /* 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(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, |
| ptrdiff_t stride, int h) |
| { |
| int i; |
| int __attribute__((aligned(16))) s; |
| const vector unsigned int zero = |
| (const vector unsigned int) vec_splat_u32(0); |
| vector unsigned int sum = (vector unsigned int) vec_splat_u32(0); |
| vector signed int sumsqr; |
| |
| for (i = 0; i < h; i++) { |
| /* Read potentially unaligned pixels into t1 and t2. */ |
| vector unsigned char t1 = vec_ld(0, pix1); |
| vector unsigned char t2 = VEC_LD(0, pix2); |
| |
| /* 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. */ |
| vector unsigned char t3 = vec_max(t1, t2); |
| vector unsigned char t4 = vec_min(t1, t2); |
| vector unsigned char t5 = vec_sub(t3, t4); |
| |
| /* Square the values and add them to our sum. */ |
| sum = vec_msum(t5, t5, sum); |
| |
| pix1 += stride; |
| pix2 += stride; |
| } |
| |
| /* 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 hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst, |
| uint8_t *src, ptrdiff_t stride, int h) |
| { |
| int __attribute__((aligned(16))) 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 srcO = unaligned_load(stride * i, src); \ |
| register vector unsigned char dstO = unaligned_load(stride * i, dst);\ |
| \ |
| /* Promote the unsigned chars to signed shorts. */ \ |
| /* We're in the 8x8 function, we only care for the first 8. */ \ |
| register vector signed short srcV = \ |
| (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
| (vector signed char) srcO); \ |
| register vector signed short dstV = \ |
| (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
| (vector signed char) dstO); \ |
| \ |
| /* subtractions inside the first butterfly */ \ |
| register vector signed short but0 = vec_sub(srcV, dstV); \ |
| register vector signed short op1 = vec_perm(but0, but0, perm1); \ |
| register vector signed short but1 = vec_mladd(but0, vprod1, op1); \ |
| register vector signed short op2 = vec_perm(but1, but1, perm2); \ |
| register vector signed short but2 = vec_mladd(but1, vprod2, op2); \ |
| register vector signed short 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 can avoid replicating loads, and |
| * gives the compiler more room 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 includes hand-made register |
| * allocation. It's not clean, but on a 7450 the resulting code is much faster |
| * (best case falls 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% fewer 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 *s, uint8_t *dst, |
| uint8_t *src, ptrdiff_t stride, int h) |
| { |
| int __attribute__((aligned(16))) 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 srcO __asm__ ("v22") = \ |
| unaligned_load(stride * i, src); \ |
| register vector unsigned char dstO __asm__ ("v23") = \ |
| unaligned_load(stride * i, dst);\ |
| \ |
| /* Promote the unsigned chars to signed shorts. */ \ |
| register vector signed short srcV __asm__ ("v24") = \ |
| (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
| (vector signed char) srcO); \ |
| register vector signed short dstV __asm__ ("v25") = \ |
| (vector signed short) VEC_MERGEH((vector signed char) vzero, \ |
| (vector signed char) dstO); \ |
| register vector signed short srcW __asm__ ("v26") = \ |
| (vector signed short) VEC_MERGEL((vector signed char) vzero, \ |
| (vector signed char) srcO); \ |
| register vector signed short dstW __asm__ ("v27") = \ |
| (vector signed short) VEC_MERGEL((vector signed char) vzero, \ |
| (vector signed char) dstO); \ |
| \ |
| /* subtractions inside the first butterfly */ \ |
| register vector signed short but0 __asm__ ("v28") = \ |
| vec_sub(srcV, dstV); \ |
| register vector signed short but0S __asm__ ("v29") = \ |
| vec_sub(srcW, dstW); \ |
| register vector signed short op1 __asm__ ("v30") = \ |
| vec_perm(but0, but0, perm1); \ |
| register vector signed short but1 __asm__ ("v22") = \ |
| vec_mladd(but0, vprod1, op1); \ |
| register vector signed short op1S __asm__ ("v23") = \ |
| vec_perm(but0S, but0S, perm1); \ |
| register vector signed short but1S __asm__ ("v24") = \ |
| vec_mladd(but0S, vprod1, op1S); \ |
| register vector signed short op2 __asm__ ("v25") = \ |
| vec_perm(but1, but1, perm2); \ |
| register vector signed short but2 __asm__ ("v26") = \ |
| vec_mladd(but1, vprod2, op2); \ |
| register vector signed short op2S __asm__ ("v27") = \ |
| vec_perm(but1S, but1S, perm2); \ |
| register vector signed short but2S __asm__ ("v28") = \ |
| vec_mladd(but1S, vprod2, op2S); \ |
| register vector signed short op3 __asm__ ("v29") = \ |
| vec_perm(but2, but2, perm3); \ |
| register vector signed short op3S __asm__ ("v30") = \ |
| vec_perm(but2S, but2S, perm3); \ |
| res1 = vec_mladd(but2, vprod3, op3); \ |
| 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 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); |
| |
| register vector signed short line0S = vec_add(temp0S, temp1S); |
| register vector signed short line1S = vec_sub(temp0S, temp1S); |
| register vector signed short line2S = vec_add(temp2S, temp3S); |
| register vector signed short line3S = vec_sub(temp2S, temp3S); |
| register vector signed short line4S = vec_add(temp4S, temp5S); |
| register vector signed short line5S = vec_sub(temp4S, temp5S); |
| register vector signed short line6S = vec_add(temp6S, temp7S); |
| register vector signed short line7S = vec_sub(temp6S, temp7S); |
| |
| register vector signed short line0BS = vec_add(line0S, line2S); |
| register vector signed short line2BS = vec_sub(line0S, line2S); |
| register vector signed short line1BS = vec_add(line1S, line3S); |
| register vector signed short line3BS = vec_sub(line1S, line3S); |
| register vector signed short line4BS = vec_add(line4S, line6S); |
| register vector signed short line6BS = vec_sub(line4S, line6S); |
| register vector signed short line5BS = vec_add(line5S, line7S); |
| register vector signed short line7BS = vec_sub(line5S, line7S); |
| |
| register vector signed short line0CS = vec_add(line0BS, line4BS); |
| register vector signed short line4CS = vec_sub(line0BS, line4BS); |
| register vector signed short line1CS = vec_add(line1BS, line5BS); |
| register vector signed short line5CS = vec_sub(line1BS, line5BS); |
| register vector signed short line2CS = vec_add(line2BS, line6BS); |
| register vector signed short line6CS = vec_sub(line2BS, line6BS); |
| register vector signed short line3CS = vec_add(line3BS, line7BS); |
| register vector signed short line7CS = vec_sub(line3BS, line7BS); |
| |
| 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_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 *s, uint8_t *dst, |
| uint8_t *src, ptrdiff_t stride, int h) |
| { |
| int 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; |
| } |
| #endif /* HAVE_ALTIVEC */ |
| |
| av_cold void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx) |
| { |
| #if HAVE_ALTIVEC |
| if (!PPC_ALTIVEC(av_get_cpu_flags())) |
| return; |
| |
| 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->sse[0] = sse16_altivec; |
| c->sse[1] = sse8_altivec; |
| |
| c->hadamard8_diff[0] = hadamard8_diff16_altivec; |
| c->hadamard8_diff[1] = hadamard8_diff8x8_altivec; |
| #endif /* HAVE_ALTIVEC */ |
| } |
