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Diffstat (limited to 'ffmpeg1/libavcodec/ppc/dsputil_altivec.c')
| -rw-r--r-- | ffmpeg1/libavcodec/ppc/dsputil_altivec.c | 963 |
1 files changed, 963 insertions, 0 deletions
diff --git a/ffmpeg1/libavcodec/ppc/dsputil_altivec.c b/ffmpeg1/libavcodec/ppc/dsputil_altivec.c new file mode 100644 index 0000000..f36e394 --- /dev/null +++ b/ffmpeg1/libavcodec/ppc/dsputil_altivec.c @@ -0,0 +1,963 @@ +/* + * 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(15, pix1); + vector unsigned char pix2l = vec_ld( 0, pix2); + vector unsigned char pix2r = vec_ld(15, 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(15, pix1); + vector unsigned char pix2l = vec_ld( 0, pix2); + vector unsigned char pix2r = vec_ld(15, 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(15, 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; +} |