dsputil_altivec.c
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上传日期:2014-04-03
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文件大小:64k
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Windows CE
开发平台:
C/C++
- /*
- * Copyright (c) 2002 Brian Foley
- * Copyright (c) 2002 Dieter Shirley
- * Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org>
- *
- * This library 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 of the License, or (at your option) any later version.
- *
- * This library 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- #include "../dsputil.h"
- #include "gcc_fixes.h"
- #include "dsputil_altivec.h"
- #ifdef CONFIG_DARWIN
- #include <sys/sysctl.h>
- #else /* CONFIG_DARWIN */
- #ifdef __AMIGAOS4__
- #include <exec/exec.h>
- #include <interfaces/exec.h>
- #include <proto/exec.h>
- #else /* __AMIGAOS4__ */
- #include <signal.h>
- #include <setjmp.h>
- static sigjmp_buf jmpbuf;
- static volatile sig_atomic_t canjump = 0;
- static void sigill_handler (int sig)
- {
- if (!canjump) {
- signal (sig, SIG_DFL);
- raise (sig);
- }
- canjump = 0;
- siglongjmp (jmpbuf, 1);
- }
- #endif /* CONFIG_DARWIN */
- #endif /* __AMIGAOS4__ */
- int sad16_x2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
- {
- int i;
- int s __attribute__((aligned(16)));
- const_vector unsigned char zero = (const_vector unsigned char)vec_splat_u8(0);
- vector unsigned char *tv;
- vector unsigned char pix1v, pix2v, pix2iv, avgv, t5;
- vector unsigned int sad;
- vector signed int sumdiffs;
- s = 0;
- sad = (vector unsigned int)vec_splat_u32(0);
- for(i=0;i<h;i++) {
- /*
- Read unaligned pixels into our vectors. The vectors are as follows:
- pix1v: pix1[0]-pix1[15]
- pix2v: pix2[0]-pix2[15] pix2iv: pix2[1]-pix2[16]
- */
- tv = (vector unsigned char *) pix1;
- pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1));
- tv = (vector unsigned char *) &pix2[0];
- pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0]));
- tv = (vector unsigned char *) &pix2[1];
- pix2iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[1]));
- /* Calculate the average vector */
- avgv = vec_avg(pix2v, pix2iv);
- /* Calculate a sum of abs differences vector */
- t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
- /* Add each 4 pixel group together and put 4 results into sad */
- sad = vec_sum4s(t5, sad);
- pix1 += line_size;
- pix2 += line_size;
- }
- /* Sum up the four partial sums, and put the result into s */
- sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
- sumdiffs = vec_splat(sumdiffs, 3);
- vec_ste(sumdiffs, 0, &s);
- return s;
- }
- int sad16_y2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
- {
- int i;
- int s __attribute__((aligned(16)));
- const_vector unsigned char zero = (const_vector unsigned char)vec_splat_u8(0);
- vector unsigned char *tv;
- vector unsigned char pix1v, pix2v, pix3v, avgv, t5;
- vector unsigned int sad;
- vector signed int sumdiffs;
- uint8_t *pix3 = pix2 + line_size;
- s = 0;
- sad = (vector unsigned int)vec_splat_u32(0);
- /*
- Due to the fact that pix3 = pix2 + line_size, the pix3 of one
- iteration becomes pix2 in the next iteration. We can use this
- fact to avoid a potentially expensive unaligned read, each
- time around the loop.
- Read unaligned pixels into our vectors. The vectors are as follows:
- pix2v: pix2[0]-pix2[15]
- Split the pixel vectors into shorts
- */
- tv = (vector unsigned char *) &pix2[0];
- pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0]));
- for(i=0;i<h;i++) {
- /*
- Read unaligned pixels into our vectors. The vectors are as follows:
- pix1v: pix1[0]-pix1[15]
- pix3v: pix3[0]-pix3[15]
- */
- tv = (vector unsigned char *) pix1;
- pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1));
- tv = (vector unsigned char *) &pix3[0];
- pix3v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[0]));
- /* Calculate the average vector */
- avgv = vec_avg(pix2v, pix3v);
- /* Calculate a sum of abs differences vector */
- t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
- /* Add each 4 pixel group together and put 4 results into sad */
- sad = vec_sum4s(t5, sad);
- pix1 += line_size;
- pix2v = pix3v;
- pix3 += line_size;
- }
- /* Sum up the four partial sums, and put the result into s */
- sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
- sumdiffs = vec_splat(sumdiffs, 3);
- vec_ste(sumdiffs, 0, &s);
- return s;
- }
- int sad16_xy2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
- {
- int i;
- int s __attribute__((aligned(16)));
- uint8_t *pix3 = pix2 + line_size;
- const_vector unsigned char zero = (const_vector unsigned char)vec_splat_u8(0);
- const_vector unsigned short two = (const_vector unsigned short)vec_splat_u16(2);
- vector unsigned char *tv, avgv, t5;
- vector unsigned char pix1v, pix2v, pix3v, pix2iv, pix3iv;
- vector unsigned short pix2lv, pix2hv, pix2ilv, pix2ihv;
- vector unsigned short pix3lv, pix3hv, pix3ilv, pix3ihv;
- vector unsigned short avghv, avglv;
- vector unsigned short t1, t2, t3, t4;
- vector unsigned int sad;
- vector signed int sumdiffs;
- sad = (vector unsigned int)vec_splat_u32(0);
- s = 0;
- /*
- Due to the fact that pix3 = pix2 + line_size, the pix3 of one
- iteration becomes pix2 in the next iteration. We can use this
- fact to avoid a potentially expensive unaligned read, as well
- as some splitting, and vector addition each time around the loop.
- Read unaligned pixels into our vectors. The vectors are as follows:
- pix2v: pix2[0]-pix2[15] pix2iv: pix2[1]-pix2[16]
- Split the pixel vectors into shorts
- */
- tv = (vector unsigned char *) &pix2[0];
- pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0]));
- tv = (vector unsigned char *) &pix2[1];
- pix2iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[1]));
- pix2hv = (vector unsigned short) vec_mergeh(zero, pix2v);
- pix2lv = (vector unsigned short) vec_mergel(zero, pix2v);
- pix2ihv = (vector unsigned short) vec_mergeh(zero, pix2iv);
- pix2ilv = (vector unsigned short) vec_mergel(zero, pix2iv);
- t1 = vec_add(pix2hv, pix2ihv);
- t2 = vec_add(pix2lv, pix2ilv);
- for(i=0;i<h;i++) {
- /*
- Read unaligned pixels into our vectors. The vectors are as follows:
- pix1v: pix1[0]-pix1[15]
- pix3v: pix3[0]-pix3[15] pix3iv: pix3[1]-pix3[16]
- */
- tv = (vector unsigned char *) pix1;
- pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1));
- tv = (vector unsigned char *) &pix3[0];
- pix3v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[0]));
- tv = (vector unsigned char *) &pix3[1];
- pix3iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[1]));
- /*
- Note that Altivec does have vec_avg, but this works on vector pairs
- and rounds up. We could do avg(avg(a,b),avg(c,d)), but the rounding
- would mean that, for example, avg(3,0,0,1) = 2, when it should be 1.
- Instead, we have to split the pixel vectors into vectors of shorts,
- and do the averaging by hand.
- */
- /* Split the pixel vectors into shorts */
- pix3hv = (vector unsigned short) vec_mergeh(zero, pix3v);
- pix3lv = (vector unsigned short) vec_mergel(zero, pix3v);
- pix3ihv = (vector unsigned short) vec_mergeh(zero, pix3iv);
- pix3ilv = (vector unsigned short) vec_mergel(zero, pix3iv);
- /* Do the averaging on them */
- t3 = vec_add(pix3hv, pix3ihv);
- t4 = vec_add(pix3lv, pix3ilv);
- avghv = vec_sr(vec_add(vec_add(t1, t3), two), two);
- avglv = vec_sr(vec_add(vec_add(t2, t4), two), two);
- /* Pack the shorts back into a result */
- avgv = vec_pack(avghv, avglv);
- /* Calculate a sum of abs differences vector */
- t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
- /* Add each 4 pixel group together and put 4 results into sad */
- sad = vec_sum4s(t5, sad);
- pix1 += line_size;
- pix3 += line_size;
- /* Transfer the calculated values for pix3 into pix2 */
- t1 = t3;
- t2 = t4;
- }
- /* Sum up the four partial sums, and put the result into s */
- sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
- sumdiffs = vec_splat(sumdiffs, 3);
- vec_ste(sumdiffs, 0, &s);
- return s;
- }
- int sad16_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
- {
- int i;
- int s __attribute__((aligned(16)));
- const_vector unsigned int zero = (const_vector unsigned int)vec_splat_u32(0);
- vector unsigned char perm1, perm2, *pix1v, *pix2v;
- vector unsigned char t1, t2, t3,t4, t5;
- vector unsigned int sad;
- vector signed int sumdiffs;
- sad = (vector unsigned int)vec_splat_u32(0);
- for(i=0;i<h;i++) {
- /* Read potentially unaligned pixels into t1 and t2 */
- perm1 = vec_lvsl(0, pix1);
- pix1v = (vector unsigned char *) pix1;
- perm2 = vec_lvsl(0, pix2);
- pix2v = (vector unsigned char *) pix2;
- t1 = vec_perm(pix1v[0], pix1v[1], perm1);
- t2 = vec_perm(pix2v[0], pix2v[1], perm2);
- /* 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;
- }
- int sad8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
- {
- int i;
- int s __attribute__((aligned(16)));
- const_vector unsigned int zero = (const_vector unsigned int)vec_splat_u32(0);
- vector unsigned char perm1, perm2, permclear, *pix1v, *pix2v;
- vector unsigned char t1, t2, t3,t4, t5;
- vector unsigned int sad;
- vector signed int sumdiffs;
- sad = (vector unsigned int)vec_splat_u32(0);
- permclear = (vector unsigned char)AVV(255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0);
- for(i=0;i<h;i++) {
- /* Read potentially unaligned pixels into t1 and t2
- Since we're reading 16 pixels, and actually only want 8,
- mask out the last 8 pixels. The 0s don't change the sum. */
- perm1 = vec_lvsl(0, pix1);
- pix1v = (vector unsigned char *) pix1;
- perm2 = vec_lvsl(0, pix2);
- pix2v = (vector unsigned char *) pix2;
- t1 = vec_and(vec_perm(pix1v[0], pix1v[1], perm1), permclear);
- t2 = vec_and(vec_perm(pix2v[0], pix2v[1], perm2), permclear);
- /* Calculate a sum of abs differences vector */
- t3 = vec_max(t1, t2);
- t4 = vec_min(t1, t2);
- t5 = vec_sub(t3, t4);
- /* Add each 4 pixel group together and put 4 results into sad */
- sad = vec_sum4s(t5, sad);
- pix1 += line_size;
- pix2 += line_size;
- }
- /* Sum up the four partial sums, and put the result into s */
- sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
- sumdiffs = vec_splat(sumdiffs, 3);
- vec_ste(sumdiffs, 0, &s);
- return s;
- }
- int pix_norm1_altivec(uint8_t *pix, int line_size)
- {
- int i;
- int s __attribute__((aligned(16)));
- const_vector unsigned int zero = (const_vector unsigned int)vec_splat_u32(0);
- vector unsigned char *tv;
- vector unsigned char pixv;
- vector unsigned int sv;
- vector signed int sum;
- sv = (vector unsigned int)vec_splat_u32(0);
- s = 0;
- for (i = 0; i < 16; i++) {
- /* Read in the potentially unaligned pixels */
- tv = (vector unsigned char *) pix;
- pixv = vec_perm(tv[0], tv[1], vec_lvsl(0, pix));
- /* Square the values, and add them to our sum */
- sv = vec_msum(pixv, pixv, sv);
- pix += line_size;
- }
- /* Sum up the four partial sums, and put the result into s */
- sum = vec_sums((vector signed int) sv, (vector signed int) zero);
- sum = vec_splat(sum, 3);
- vec_ste(sum, 0, &s);
- return s;
- }
- /**
- * Sum of Squared Errors for a 8x8 block.
- * AltiVec-enhanced.
- * It's the sad8_altivec code above w/ squaring added.
- */
- int sse8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
- {
- int i;
- int s __attribute__((aligned(16)));
- const_vector unsigned int zero = (const_vector unsigned int)vec_splat_u32(0);
- vector unsigned char perm1, perm2, permclear, *pix1v, *pix2v;
- vector unsigned char t1, t2, t3,t4, t5;
- vector unsigned int sum;
- vector signed int sumsqr;
- sum = (vector unsigned int)vec_splat_u32(0);
- permclear = (vector unsigned char)AVV(255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0);
- for(i=0;i<h;i++) {
- /* Read potentially unaligned pixels into t1 and t2
- Since we're reading 16 pixels, and actually only want 8,
- mask out the last 8 pixels. The 0s don't change the sum. */
- perm1 = vec_lvsl(0, pix1);
- pix1v = (vector unsigned char *) pix1;
- perm2 = vec_lvsl(0, pix2);
- pix2v = (vector unsigned char *) pix2;
- t1 = vec_and(vec_perm(pix1v[0], pix1v[1], perm1), permclear);
- t2 = vec_and(vec_perm(pix2v[0], pix2v[1], perm2), permclear);
- /*
- Since we want to use unsigned chars, we can take advantage
- of the fact that abs(a-b)^2 = (a-b)^2.
- */
- /* Calculate abs differences vector */
- t3 = vec_max(t1, t2);
- t4 = vec_min(t1, t2);
- t5 = vec_sub(t3, t4);
- /* Square the values and add them to our sum */
- sum = vec_msum(t5, t5, sum);
- pix1 += line_size;
- pix2 += line_size;
- }
- /* Sum up the four partial sums, and put the result into s */
- sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero);
- sumsqr = vec_splat(sumsqr, 3);
- vec_ste(sumsqr, 0, &s);
- return s;
- }
- /**
- * Sum of Squared Errors for a 16x16 block.
- * AltiVec-enhanced.
- * It's the sad16_altivec code above w/ squaring added.
- */
- int sse16_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
- {
- int i;
- int s __attribute__((aligned(16)));
- const_vector unsigned int zero = (const_vector unsigned int)vec_splat_u32(0);
- vector unsigned char perm1, perm2, *pix1v, *pix2v;
- vector unsigned char t1, t2, t3,t4, t5;
- vector unsigned int sum;
- vector signed int sumsqr;
- sum = (vector unsigned int)vec_splat_u32(0);
- for(i=0;i<h;i++) {
- /* Read potentially unaligned pixels into t1 and t2 */
- perm1 = vec_lvsl(0, pix1);
- pix1v = (vector unsigned char *) pix1;
- perm2 = vec_lvsl(0, pix2);
- pix2v = (vector unsigned char *) pix2;
- t1 = vec_perm(pix1v[0], pix1v[1], perm1);
- t2 = vec_perm(pix2v[0], pix2v[1], perm2);
- /*
- Since we want to use unsigned chars, we can take advantage
- of the fact that abs(a-b)^2 = (a-b)^2.
- */
- /* Calculate abs differences vector */
- t3 = vec_max(t1, t2);
- t4 = vec_min(t1, t2);
- t5 = vec_sub(t3, t4);
- /* Square the values and add them to our sum */
- sum = vec_msum(t5, t5, sum);
- pix1 += line_size;
- pix2 += line_size;
- }
- /* Sum up the four partial sums, and put the result into s */
- sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero);
- sumsqr = vec_splat(sumsqr, 3);
- vec_ste(sumsqr, 0, &s);
- return s;
- }
- int pix_sum_altivec(uint8_t * pix, int line_size)
- {
- const_vector unsigned int zero = (const_vector unsigned int)vec_splat_u32(0);
- vector unsigned char perm, *pixv;
- vector unsigned char t1;
- vector unsigned int sad;
- vector signed int sumdiffs;
- int i;
- int s __attribute__((aligned(16)));
- sad = (vector unsigned int)vec_splat_u32(0);
- for (i = 0; i < 16; i++) {
- /* Read the potentially unaligned 16 pixels into t1 */
- perm = vec_lvsl(0, pix);
- pixv = (vector unsigned char *) pix;
- t1 = vec_perm(pixv[0], pixv[1], perm);
- /* Add each 4 pixel group together and put 4 results into sad */
- sad = vec_sum4s(t1, sad);
- pix += line_size;
- }
- /* Sum up the four partial sums, and put the result into s */
- sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
- sumdiffs = vec_splat(sumdiffs, 3);
- vec_ste(sumdiffs, 0, &s);
- return s;
- }
- void get_pixels_altivec(DCTELEM *restrict block, const uint8_t *pixels, int line_size)
- {
- int i;
- vector unsigned char perm, bytes, *pixv;
- const_vector unsigned char zero = (const_vector unsigned char)vec_splat_u8(0);
- vector signed short shorts;
- for(i=0;i<8;i++)
- {
- // Read potentially unaligned pixels.
- // We're reading 16 pixels, and actually only want 8,
- // but we simply ignore the extras.
- perm = vec_lvsl(0, pixels);
- pixv = (vector unsigned char *) pixels;
- bytes = vec_perm(pixv[0], pixv[1], perm);
- // convert the bytes into shorts
- shorts = (vector signed short)vec_mergeh(zero, bytes);
- // save the data to the block, we assume the block is 16-byte aligned
- vec_st(shorts, i*16, (vector signed short*)block);
- pixels += line_size;
- }
- }
- void diff_pixels_altivec(DCTELEM *restrict block, const uint8_t *s1,
- const uint8_t *s2, int stride)
- {
- int i;
- vector unsigned char perm, bytes, *pixv;
- const_vector unsigned char zero = (const_vector unsigned char)vec_splat_u8(0);
- vector signed short shorts1, shorts2;
- for(i=0;i<4;i++)
- {
- // Read potentially unaligned pixels
- // We're reading 16 pixels, and actually only want 8,
- // but we simply ignore the extras.
- perm = vec_lvsl(0, s1);
- pixv = (vector unsigned char *) s1;
- bytes = vec_perm(pixv[0], pixv[1], perm);
- // convert the bytes into shorts
- shorts1 = (vector signed short)vec_mergeh(zero, bytes);
- // Do the same for the second block of pixels
- perm = vec_lvsl(0, s2);
- pixv = (vector unsigned char *) s2;
- bytes = vec_perm(pixv[0], pixv[1], perm);
- // convert the bytes into shorts
- shorts2 = (vector signed short)vec_mergeh(zero, bytes);
- // Do the subtraction
- shorts1 = vec_sub(shorts1, shorts2);
- // save the data to the block, we assume the block is 16-byte aligned
- vec_st(shorts1, 0, (vector signed short*)block);
- s1 += stride;
- s2 += stride;
- block += 8;
- // The code below is a copy of the code above... This is a manual
- // unroll.
- // Read potentially unaligned pixels
- // We're reading 16 pixels, and actually only want 8,
- // but we simply ignore the extras.
- perm = vec_lvsl(0, s1);
- pixv = (vector unsigned char *) s1;
- bytes = vec_perm(pixv[0], pixv[1], perm);
- // convert the bytes into shorts
- shorts1 = (vector signed short)vec_mergeh(zero, bytes);
- // Do the same for the second block of pixels
- perm = vec_lvsl(0, s2);
- pixv = (vector unsigned char *) s2;
- bytes = vec_perm(pixv[0], pixv[1], perm);
- // convert the bytes into shorts
- shorts2 = (vector signed short)vec_mergeh(zero, bytes);
- // Do the subtraction
- shorts1 = vec_sub(shorts1, shorts2);
- // save the data to the block, we assume the block is 16-byte aligned
- vec_st(shorts1, 0, (vector signed short*)block);
- s1 += stride;
- s2 += stride;
- block += 8;
- }
- }
- void add_bytes_altivec(uint8_t *dst, uint8_t *src, int w) {
- #ifdef ALTIVEC_USE_REFERENCE_C_CODE
- int i;
- for(i=0; i+7<w; i++){
- dst[i+0] += src[i+0];
- dst[i+1] += src[i+1];
- dst[i+2] += src[i+2];
- dst[i+3] += src[i+3];
- dst[i+4] += src[i+4];
- dst[i+5] += src[i+5];
- dst[i+6] += src[i+6];
- dst[i+7] += src[i+7];
- }
- for(; i<w; i++)
- dst[i+0] += src[i+0];
- #else /* ALTIVEC_USE_REFERENCE_C_CODE */
- register int i;
- register vector unsigned char vdst, vsrc;
- /* dst and src are 16 bytes-aligned (guaranteed) */
- for(i = 0 ; (i + 15) < w ; i++)
- {
- vdst = vec_ld(i << 4, (unsigned char*)dst);
- vsrc = vec_ld(i << 4, (unsigned char*)src);
- vdst = vec_add(vsrc, vdst);
- vec_st(vdst, i << 4, (unsigned char*)dst);
- }
- /* if w is not a multiple of 16 */
- for (; (i < w) ; i++)
- {
- dst[i] = src[i];
- }
- #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
- }
- /* next one assumes that ((line_size % 16) == 0) */
- void put_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
- {
- POWERPC_PERF_DECLARE(altivec_put_pixels16_num, 1);
- #ifdef ALTIVEC_USE_REFERENCE_C_CODE
- int i;
- POWERPC_PERF_START_COUNT(altivec_put_pixels16_num, 1);
- for(i=0; i<h; i++) {
- *((uint32_t*)(block)) = LD32(pixels);
- *((uint32_t*)(block+4)) = LD32(pixels+4);
- *((uint32_t*)(block+8)) = LD32(pixels+8);
- *((uint32_t*)(block+12)) = LD32(pixels+12);
- pixels+=line_size;
- block +=line_size;
- }
- POWERPC_PERF_STOP_COUNT(altivec_put_pixels16_num, 1);
- #else /* ALTIVEC_USE_REFERENCE_C_CODE */
- register vector unsigned char pixelsv1, pixelsv2;
- register vector unsigned char pixelsv1B, pixelsv2B;
- register vector unsigned char pixelsv1C, pixelsv2C;
- register vector unsigned char pixelsv1D, pixelsv2D;
- register vector unsigned char perm = vec_lvsl(0, pixels);
- int i;
- register int line_size_2 = line_size << 1;
- register int line_size_3 = line_size + line_size_2;
- register int line_size_4 = line_size << 2;
- POWERPC_PERF_START_COUNT(altivec_put_pixels16_num, 1);
- // hand-unrolling the loop by 4 gains about 15%
- // mininum execution time goes from 74 to 60 cycles
- // it's faster than -funroll-loops, but using
- // -funroll-loops w/ this is bad - 74 cycles again.
- // all this is on a 7450, tuning for the 7450
- #if 0
- for(i=0; i<h; i++) {
- pixelsv1 = vec_ld(0, (unsigned char*)pixels);
- pixelsv2 = vec_ld(16, (unsigned char*)pixels);
- vec_st(vec_perm(pixelsv1, pixelsv2, perm),
- 0, (unsigned char*)block);
- pixels+=line_size;
- block +=line_size;
- }
- #else
- for(i=0; i<h; i+=4) {
- pixelsv1 = vec_ld(0, (unsigned char*)pixels);
- pixelsv2 = vec_ld(16, (unsigned char*)pixels);
- pixelsv1B = vec_ld(line_size, (unsigned char*)pixels);
- pixelsv2B = vec_ld(16 + line_size, (unsigned char*)pixels);
- pixelsv1C = vec_ld(line_size_2, (unsigned char*)pixels);
- pixelsv2C = vec_ld(16 + line_size_2, (unsigned char*)pixels);
- pixelsv1D = vec_ld(line_size_3, (unsigned char*)pixels);
- pixelsv2D = vec_ld(16 + line_size_3, (unsigned char*)pixels);
- vec_st(vec_perm(pixelsv1, pixelsv2, perm),
- 0, (unsigned char*)block);
- vec_st(vec_perm(pixelsv1B, pixelsv2B, perm),
- line_size, (unsigned char*)block);
- vec_st(vec_perm(pixelsv1C, pixelsv2C, perm),
- line_size_2, (unsigned char*)block);
- vec_st(vec_perm(pixelsv1D, pixelsv2D, perm),
- line_size_3, (unsigned char*)block);
- pixels+=line_size_4;
- block +=line_size_4;
- }
- #endif
- POWERPC_PERF_STOP_COUNT(altivec_put_pixels16_num, 1);
- #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
- }
- /* next one assumes that ((line_size % 16) == 0) */
- #define op_avg(a,b) a = ( ((a)|(b)) - ((((a)^(b))&0xFEFEFEFEUL)>>1) )
- void avg_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
- {
- POWERPC_PERF_DECLARE(altivec_avg_pixels16_num, 1);
- #ifdef ALTIVEC_USE_REFERENCE_C_CODE
- int i;
- POWERPC_PERF_START_COUNT(altivec_avg_pixels16_num, 1);
- for(i=0; i<h; i++) {
- op_avg(*((uint32_t*)(block)),LD32(pixels));
- op_avg(*((uint32_t*)(block+4)),LD32(pixels+4));
- op_avg(*((uint32_t*)(block+8)),LD32(pixels+8));
- op_avg(*((uint32_t*)(block+12)),LD32(pixels+12));
- pixels+=line_size;
- block +=line_size;
- }
- POWERPC_PERF_STOP_COUNT(altivec_avg_pixels16_num, 1);
- #else /* ALTIVEC_USE_REFERENCE_C_CODE */
- register vector unsigned char pixelsv1, pixelsv2, pixelsv, blockv;
- register vector unsigned char perm = vec_lvsl(0, pixels);
- int i;
- POWERPC_PERF_START_COUNT(altivec_avg_pixels16_num, 1);
- for(i=0; i<h; i++) {
- pixelsv1 = vec_ld(0, (unsigned char*)pixels);
- pixelsv2 = vec_ld(16, (unsigned char*)pixels);
- blockv = vec_ld(0, block);
- pixelsv = vec_perm(pixelsv1, pixelsv2, perm);
- blockv = vec_avg(blockv,pixelsv);
- vec_st(blockv, 0, (unsigned char*)block);
- pixels+=line_size;
- block +=line_size;
- }
- POWERPC_PERF_STOP_COUNT(altivec_avg_pixels16_num, 1);
- #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
- }
- /* next one assumes that ((line_size % 8) == 0) */
- void avg_pixels8_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h)
- {
- POWERPC_PERF_DECLARE(altivec_avg_pixels8_num, 1);
- #ifdef ALTIVEC_USE_REFERENCE_C_CODE
- int i;
- POWERPC_PERF_START_COUNT(altivec_avg_pixels8_num, 1);
- for (i = 0; i < h; i++) {
- *((uint32_t *) (block)) =
- (((*((uint32_t *) (block))) |
- ((((const struct unaligned_32 *) (pixels))->l))) -
- ((((*((uint32_t *) (block))) ^
- ((((const struct unaligned_32 *) (pixels))->
- l))) & 0xFEFEFEFEUL) >> 1));
- *((uint32_t *) (block + 4)) =
- (((*((uint32_t *) (block + 4))) |
- ((((const struct unaligned_32 *) (pixels + 4))->l))) -
- ((((*((uint32_t *) (block + 4))) ^
- ((((const struct unaligned_32 *) (pixels +
- 4))->
- l))) & 0xFEFEFEFEUL) >> 1));
- pixels += line_size;
- block += line_size;
- }
- POWERPC_PERF_STOP_COUNT(altivec_avg_pixels8_num, 1);
- #else /* ALTIVEC_USE_REFERENCE_C_CODE */
- register vector unsigned char pixelsv1, pixelsv2, pixelsv, blockv;
- int i;
- POWERPC_PERF_START_COUNT(altivec_avg_pixels8_num, 1);
- for (i = 0; i < h; i++) {
- /*
- block is 8 bytes-aligned, so we're either in the
- left block (16 bytes-aligned) or in the right block (not)
- */
- int rightside = ((unsigned long)block & 0x0000000F);
- blockv = vec_ld(0, block);
- pixelsv1 = vec_ld(0, (unsigned char*)pixels);
- pixelsv2 = vec_ld(16, (unsigned char*)pixels);
- pixelsv = vec_perm(pixelsv1, pixelsv2, vec_lvsl(0, pixels));
- if (rightside)
- {
- pixelsv = vec_perm(blockv, pixelsv, vcprm(0,1,s0,s1));
- }
- else
- {
- pixelsv = vec_perm(blockv, pixelsv, vcprm(s0,s1,2,3));
- }
- blockv = vec_avg(blockv, pixelsv);
- vec_st(blockv, 0, block);
- pixels += line_size;
- block += line_size;
- }
- POWERPC_PERF_STOP_COUNT(altivec_avg_pixels8_num, 1);
- #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
- }
- /* next one assumes that ((line_size % 8) == 0) */
- void put_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
- {
- POWERPC_PERF_DECLARE(altivec_put_pixels8_xy2_num, 1);
- #ifdef ALTIVEC_USE_REFERENCE_C_CODE
- int j;
- POWERPC_PERF_START_COUNT(altivec_put_pixels8_xy2_num, 1);
- for (j = 0; j < 2; j++) {
- int i;
- const uint32_t a = (((const struct unaligned_32 *) (pixels))->l);
- const uint32_t b =
- (((const struct unaligned_32 *) (pixels + 1))->l);
- uint32_t l0 =
- (a & 0x03030303UL) + (b & 0x03030303UL) + 0x02020202UL;
- uint32_t h0 =
- ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- uint32_t l1, h1;
- pixels += line_size;
- for (i = 0; i < h; i += 2) {
- uint32_t a = (((const struct unaligned_32 *) (pixels))->l);
- uint32_t b = (((const struct unaligned_32 *) (pixels + 1))->l);
- l1 = (a & 0x03030303UL) + (b & 0x03030303UL);
- h1 = ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- *((uint32_t *) block) =
- h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL);
- pixels += line_size;
- block += line_size;
- a = (((const struct unaligned_32 *) (pixels))->l);
- b = (((const struct unaligned_32 *) (pixels + 1))->l);
- l0 = (a & 0x03030303UL) + (b & 0x03030303UL) + 0x02020202UL;
- h0 = ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- *((uint32_t *) block) =
- h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL);
- pixels += line_size;
- block += line_size;
- } pixels += 4 - line_size * (h + 1);
- block += 4 - line_size * h;
- }
- POWERPC_PERF_STOP_COUNT(altivec_put_pixels8_xy2_num, 1);
- #else /* ALTIVEC_USE_REFERENCE_C_CODE */
- register int i;
- register vector unsigned char
- pixelsv1, pixelsv2,
- pixelsavg;
- register vector unsigned char
- blockv, temp1, temp2;
- register vector unsigned short
- pixelssum1, pixelssum2, temp3;
- register const_vector unsigned char vczero = (const_vector unsigned char)vec_splat_u8(0);
- register const_vector unsigned short vctwo = (const_vector unsigned short)vec_splat_u16(2);
- temp1 = vec_ld(0, pixels);
- temp2 = vec_ld(16, pixels);
- pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));
- if ((((unsigned long)pixels) & 0x0000000F) == 0x0000000F)
- {
- pixelsv2 = temp2;
- }
- else
- {
- pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));
- }
- pixelsv1 = vec_mergeh(vczero, pixelsv1);
- pixelsv2 = vec_mergeh(vczero, pixelsv2);
- pixelssum1 = vec_add((vector unsigned short)pixelsv1,
- (vector unsigned short)pixelsv2);
- pixelssum1 = vec_add(pixelssum1, vctwo);
- POWERPC_PERF_START_COUNT(altivec_put_pixels8_xy2_num, 1);
- for (i = 0; i < h ; i++) {
- int rightside = ((unsigned long)block & 0x0000000F);
- blockv = vec_ld(0, block);
- temp1 = vec_ld(line_size, pixels);
- temp2 = vec_ld(line_size + 16, pixels);
- pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));
- if (((((unsigned long)pixels) + line_size) & 0x0000000F) == 0x0000000F)
- {
- pixelsv2 = temp2;
- }
- else
- {
- pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));
- }
- pixelsv1 = vec_mergeh(vczero, pixelsv1);
- pixelsv2 = vec_mergeh(vczero, pixelsv2);
- pixelssum2 = vec_add((vector unsigned short)pixelsv1,
- (vector unsigned short)pixelsv2);
- temp3 = vec_add(pixelssum1, pixelssum2);
- temp3 = vec_sra(temp3, vctwo);
- pixelssum1 = vec_add(pixelssum2, vctwo);
- pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero);
- if (rightside)
- {
- blockv = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1));
- }
- else
- {
- blockv = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3));
- }
- vec_st(blockv, 0, block);
- block += line_size;
- pixels += line_size;
- }
- POWERPC_PERF_STOP_COUNT(altivec_put_pixels8_xy2_num, 1);
- #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
- }
- /* next one assumes that ((line_size % 8) == 0) */
- void put_no_rnd_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
- {
- POWERPC_PERF_DECLARE(altivec_put_no_rnd_pixels8_xy2_num, 1);
- #ifdef ALTIVEC_USE_REFERENCE_C_CODE
- int j;
- POWERPC_PERF_START_COUNT(altivec_put_no_rnd_pixels8_xy2_num, 1);
- for (j = 0; j < 2; j++) {
- int i;
- const uint32_t a = (((const struct unaligned_32 *) (pixels))->l);
- const uint32_t b =
- (((const struct unaligned_32 *) (pixels + 1))->l);
- uint32_t l0 =
- (a & 0x03030303UL) + (b & 0x03030303UL) + 0x01010101UL;
- uint32_t h0 =
- ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- uint32_t l1, h1;
- pixels += line_size;
- for (i = 0; i < h; i += 2) {
- uint32_t a = (((const struct unaligned_32 *) (pixels))->l);
- uint32_t b = (((const struct unaligned_32 *) (pixels + 1))->l);
- l1 = (a & 0x03030303UL) + (b & 0x03030303UL);
- h1 = ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- *((uint32_t *) block) =
- h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL);
- pixels += line_size;
- block += line_size;
- a = (((const struct unaligned_32 *) (pixels))->l);
- b = (((const struct unaligned_32 *) (pixels + 1))->l);
- l0 = (a & 0x03030303UL) + (b & 0x03030303UL) + 0x01010101UL;
- h0 = ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- *((uint32_t *) block) =
- h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL);
- pixels += line_size;
- block += line_size;
- } pixels += 4 - line_size * (h + 1);
- block += 4 - line_size * h;
- }
- POWERPC_PERF_STOP_COUNT(altivec_put_no_rnd_pixels8_xy2_num, 1);
- #else /* ALTIVEC_USE_REFERENCE_C_CODE */
- register int i;
- register vector unsigned char
- pixelsv1, pixelsv2,
- pixelsavg;
- register vector unsigned char
- blockv, temp1, temp2;
- register vector unsigned short
- pixelssum1, pixelssum2, temp3;
- register const_vector unsigned char vczero = (const_vector unsigned char)vec_splat_u8(0);
- register const_vector unsigned short vcone = (const_vector unsigned short)vec_splat_u16(1);
- register const_vector unsigned short vctwo = (const_vector unsigned short)vec_splat_u16(2);
- temp1 = vec_ld(0, pixels);
- temp2 = vec_ld(16, pixels);
- pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));
- if ((((unsigned long)pixels) & 0x0000000F) == 0x0000000F)
- {
- pixelsv2 = temp2;
- }
- else
- {
- pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));
- }
- pixelsv1 = vec_mergeh(vczero, pixelsv1);
- pixelsv2 = vec_mergeh(vczero, pixelsv2);
- pixelssum1 = vec_add((vector unsigned short)pixelsv1,
- (vector unsigned short)pixelsv2);
- pixelssum1 = vec_add(pixelssum1, vcone);
- POWERPC_PERF_START_COUNT(altivec_put_no_rnd_pixels8_xy2_num, 1);
- for (i = 0; i < h ; i++) {
- int rightside = ((unsigned long)block & 0x0000000F);
- blockv = vec_ld(0, block);
- temp1 = vec_ld(line_size, pixels);
- temp2 = vec_ld(line_size + 16, pixels);
- pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));
- if (((((unsigned long)pixels) + line_size) & 0x0000000F) == 0x0000000F)
- {
- pixelsv2 = temp2;
- }
- else
- {
- pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));
- }
- pixelsv1 = vec_mergeh(vczero, pixelsv1);
- pixelsv2 = vec_mergeh(vczero, pixelsv2);
- pixelssum2 = vec_add((vector unsigned short)pixelsv1,
- (vector unsigned short)pixelsv2);
- temp3 = vec_add(pixelssum1, pixelssum2);
- temp3 = vec_sra(temp3, vctwo);
- pixelssum1 = vec_add(pixelssum2, vcone);
- pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero);
- if (rightside)
- {
- blockv = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1));
- }
- else
- {
- blockv = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3));
- }
- vec_st(blockv, 0, block);
- block += line_size;
- pixels += line_size;
- }
- POWERPC_PERF_STOP_COUNT(altivec_put_no_rnd_pixels8_xy2_num, 1);
- #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
- }
- /* next one assumes that ((line_size % 16) == 0) */
- void put_pixels16_xy2_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h)
- {
- POWERPC_PERF_DECLARE(altivec_put_pixels16_xy2_num, 1);
- #ifdef ALTIVEC_USE_REFERENCE_C_CODE
- int j;
- POWERPC_PERF_START_COUNT(altivec_put_pixels16_xy2_num, 1);
- for (j = 0; j < 4; j++) {
- int i;
- const uint32_t a = (((const struct unaligned_32 *) (pixels))->l);
- const uint32_t b =
- (((const struct unaligned_32 *) (pixels + 1))->l);
- uint32_t l0 =
- (a & 0x03030303UL) + (b & 0x03030303UL) + 0x02020202UL;
- uint32_t h0 =
- ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- uint32_t l1, h1;
- pixels += line_size;
- for (i = 0; i < h; i += 2) {
- uint32_t a = (((const struct unaligned_32 *) (pixels))->l);
- uint32_t b = (((const struct unaligned_32 *) (pixels + 1))->l);
- l1 = (a & 0x03030303UL) + (b & 0x03030303UL);
- h1 = ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- *((uint32_t *) block) =
- h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL);
- pixels += line_size;
- block += line_size;
- a = (((const struct unaligned_32 *) (pixels))->l);
- b = (((const struct unaligned_32 *) (pixels + 1))->l);
- l0 = (a & 0x03030303UL) + (b & 0x03030303UL) + 0x02020202UL;
- h0 = ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- *((uint32_t *) block) =
- h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL);
- pixels += line_size;
- block += line_size;
- } pixels += 4 - line_size * (h + 1);
- block += 4 - line_size * h;
- }
- POWERPC_PERF_STOP_COUNT(altivec_put_pixels16_xy2_num, 1);
- #else /* ALTIVEC_USE_REFERENCE_C_CODE */
- register int i;
- register vector unsigned char
- pixelsv1, pixelsv2, pixelsv3, pixelsv4;
- register vector unsigned char
- blockv, temp1, temp2;
- register vector unsigned short
- pixelssum1, pixelssum2, temp3,
- pixelssum3, pixelssum4, temp4;
- register const_vector unsigned char vczero = (const_vector unsigned char)vec_splat_u8(0);
- register const_vector unsigned short vctwo = (const_vector unsigned short)vec_splat_u16(2);
- POWERPC_PERF_START_COUNT(altivec_put_pixels16_xy2_num, 1);
- temp1 = vec_ld(0, pixels);
- temp2 = vec_ld(16, pixels);
- pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));
- if ((((unsigned long)pixels) & 0x0000000F) == 0x0000000F)
- {
- pixelsv2 = temp2;
- }
- else
- {
- pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));
- }
- pixelsv3 = vec_mergel(vczero, pixelsv1);
- pixelsv4 = vec_mergel(vczero, pixelsv2);
- pixelsv1 = vec_mergeh(vczero, pixelsv1);
- pixelsv2 = vec_mergeh(vczero, pixelsv2);
- pixelssum3 = vec_add((vector unsigned short)pixelsv3,
- (vector unsigned short)pixelsv4);
- pixelssum3 = vec_add(pixelssum3, vctwo);
- pixelssum1 = vec_add((vector unsigned short)pixelsv1,
- (vector unsigned short)pixelsv2);
- pixelssum1 = vec_add(pixelssum1, vctwo);
- for (i = 0; i < h ; i++) {
- blockv = vec_ld(0, block);
- temp1 = vec_ld(line_size, pixels);
- temp2 = vec_ld(line_size + 16, pixels);
- pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));
- if (((((unsigned long)pixels) + line_size) & 0x0000000F) == 0x0000000F)
- {
- pixelsv2 = temp2;
- }
- else
- {
- pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));
- }
- pixelsv3 = vec_mergel(vczero, pixelsv1);
- pixelsv4 = vec_mergel(vczero, pixelsv2);
- pixelsv1 = vec_mergeh(vczero, pixelsv1);
- pixelsv2 = vec_mergeh(vczero, pixelsv2);
- pixelssum4 = vec_add((vector unsigned short)pixelsv3,
- (vector unsigned short)pixelsv4);
- pixelssum2 = vec_add((vector unsigned short)pixelsv1,
- (vector unsigned short)pixelsv2);
- temp4 = vec_add(pixelssum3, pixelssum4);
- temp4 = vec_sra(temp4, vctwo);
- temp3 = vec_add(pixelssum1, pixelssum2);
- temp3 = vec_sra(temp3, vctwo);
- pixelssum3 = vec_add(pixelssum4, vctwo);
- pixelssum1 = vec_add(pixelssum2, vctwo);
- blockv = vec_packsu(temp3, temp4);
- vec_st(blockv, 0, block);
- block += line_size;
- pixels += line_size;
- }
- POWERPC_PERF_STOP_COUNT(altivec_put_pixels16_xy2_num, 1);
- #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
- }
- /* next one assumes that ((line_size % 16) == 0) */
- void put_no_rnd_pixels16_xy2_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h)
- {
- POWERPC_PERF_DECLARE(altivec_put_no_rnd_pixels16_xy2_num, 1);
- #ifdef ALTIVEC_USE_REFERENCE_C_CODE
- int j;
- POWERPC_PERF_START_COUNT(altivec_put_no_rnd_pixels16_xy2_num, 1);
- for (j = 0; j < 4; j++) {
- int i;
- const uint32_t a = (((const struct unaligned_32 *) (pixels))->l);
- const uint32_t b =
- (((const struct unaligned_32 *) (pixels + 1))->l);
- uint32_t l0 =
- (a & 0x03030303UL) + (b & 0x03030303UL) + 0x01010101UL;
- uint32_t h0 =
- ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- uint32_t l1, h1;
- pixels += line_size;
- for (i = 0; i < h; i += 2) {
- uint32_t a = (((const struct unaligned_32 *) (pixels))->l);
- uint32_t b = (((const struct unaligned_32 *) (pixels + 1))->l);
- l1 = (a & 0x03030303UL) + (b & 0x03030303UL);
- h1 = ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- *((uint32_t *) block) =
- h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL);
- pixels += line_size;
- block += line_size;
- a = (((const struct unaligned_32 *) (pixels))->l);
- b = (((const struct unaligned_32 *) (pixels + 1))->l);
- l0 = (a & 0x03030303UL) + (b & 0x03030303UL) + 0x01010101UL;
- h0 = ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- *((uint32_t *) block) =
- h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL);
- pixels += line_size;
- block += line_size;
- } pixels += 4 - line_size * (h + 1);
- block += 4 - line_size * h;
- }
- POWERPC_PERF_STOP_COUNT(altivec_put_no_rnd_pixels16_xy2_num, 1);
- #else /* ALTIVEC_USE_REFERENCE_C_CODE */
- register int i;
- register vector unsigned char
- pixelsv1, pixelsv2, pixelsv3, pixelsv4;
- register vector unsigned char
- blockv, temp1, temp2;
- register vector unsigned short
- pixelssum1, pixelssum2, temp3,
- pixelssum3, pixelssum4, temp4;
- register const_vector unsigned char vczero = (const_vector unsigned char)vec_splat_u8(0);
- register const_vector unsigned short vcone = (const_vector unsigned short)vec_splat_u16(1);
- register const_vector unsigned short vctwo = (const_vector unsigned short)vec_splat_u16(2);
- POWERPC_PERF_START_COUNT(altivec_put_no_rnd_pixels16_xy2_num, 1);
- temp1 = vec_ld(0, pixels);
- temp2 = vec_ld(16, pixels);
- pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));
- if ((((unsigned long)pixels) & 0x0000000F) == 0x0000000F)
- {
- pixelsv2 = temp2;
- }
- else
- {
- pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));
- }
- pixelsv3 = vec_mergel(vczero, pixelsv1);
- pixelsv4 = vec_mergel(vczero, pixelsv2);
- pixelsv1 = vec_mergeh(vczero, pixelsv1);
- pixelsv2 = vec_mergeh(vczero, pixelsv2);
- pixelssum3 = vec_add((vector unsigned short)pixelsv3,
- (vector unsigned short)pixelsv4);
- pixelssum3 = vec_add(pixelssum3, vcone);
- pixelssum1 = vec_add((vector unsigned short)pixelsv1,
- (vector unsigned short)pixelsv2);
- pixelssum1 = vec_add(pixelssum1, vcone);
- for (i = 0; i < h ; i++) {
- blockv = vec_ld(0, block);
- temp1 = vec_ld(line_size, pixels);
- temp2 = vec_ld(line_size + 16, pixels);
- pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));
- if (((((unsigned long)pixels) + line_size) & 0x0000000F) == 0x0000000F)
- {
- pixelsv2 = temp2;
- }
- else
- {
- pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));
- }
- pixelsv3 = vec_mergel(vczero, pixelsv1);
- pixelsv4 = vec_mergel(vczero, pixelsv2);
- pixelsv1 = vec_mergeh(vczero, pixelsv1);
- pixelsv2 = vec_mergeh(vczero, pixelsv2);
- pixelssum4 = vec_add((vector unsigned short)pixelsv3,
- (vector unsigned short)pixelsv4);
- pixelssum2 = vec_add((vector unsigned short)pixelsv1,
- (vector unsigned short)pixelsv2);
- temp4 = vec_add(pixelssum3, pixelssum4);
- temp4 = vec_sra(temp4, vctwo);
- temp3 = vec_add(pixelssum1, pixelssum2);
- temp3 = vec_sra(temp3, vctwo);
- pixelssum3 = vec_add(pixelssum4, vcone);
- pixelssum1 = vec_add(pixelssum2, vcone);
- blockv = vec_packsu(temp3, temp4);
- vec_st(blockv, 0, block);
- block += line_size;
- pixels += line_size;
- }
- POWERPC_PERF_STOP_COUNT(altivec_put_no_rnd_pixels16_xy2_num, 1);
- #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
- }
- #ifdef CONFIG_DARWIN
- int hadamard8_diff8x8_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h){
- POWERPC_PERF_DECLARE(altivec_hadamard8_diff8x8_num, 1);
- int sum;
- POWERPC_PERF_START_COUNT(altivec_hadamard8_diff8x8_num, 1);
- 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)AVV( 1,-1, 1,-1, 1,-1, 1,-1);
- register const_vector signed short vprod2 = (const_vector signed short)AVV( 1, 1,-1,-1, 1, 1,-1,-1);
- register const_vector signed short vprod3 = (const_vector signed short)AVV( 1, 1, 1, 1,-1,-1,-1,-1);
- register const_vector unsigned char perm1 = (const_vector unsigned char)
- AVV(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)
- AVV(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)
- AVV(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;
- src1 = vec_ld(stride * i, src);
- if ((((stride * i) + (unsigned long)src) & 0x0000000F) > 8)
- src2 = vec_ld((stride * i) + 16, src);
- srcO = vec_perm(src1, src2, vec_lvsl(stride * i, src));
- dst1 = vec_ld(stride * i, dst);
- if ((((stride * i) + (unsigned long)dst) & 0x0000000F) > 8)
- dst2 = vec_ld((stride * i) + 16, 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 */
- 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);
- /* substractions 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);
- }
- POWERPC_PERF_STOP_COUNT(altivec_hadamard8_diff8x8_num, 1);
- 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 (arount 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)AVV( 1,-1, 1,-1, 1,-1, 1,-1);
- register const_vector signed short vprod2 asm ("v17")= (const_vector signed short)AVV( 1, 1,-1,-1, 1, 1,-1,-1);
- register const_vector signed short vprod3 asm ("v18")= (const_vector signed short)AVV( 1, 1, 1, 1,-1,-1,-1,-1);
- register const_vector unsigned char perm1 asm ("v19")= (const_vector unsigned char)
- AVV(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)
- AVV(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)
- AVV(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");
- register vector unsigned char dst1 asm ("v24"), dst2 asm ("v25");
- src1 = vec_ld(stride * i, src);
- src2 = vec_ld((stride * i) + 16, src);
- register vector unsigned char srcO asm ("v22") = vec_perm(src1, src2, vec_lvsl(stride * i, src));
- dst1 = vec_ld(stride * i, dst);
- dst2 = vec_ld((stride * i) + 16, dst);
- register vector unsigned char dstO asm ("v23") = vec_perm(dst1, dst2, vec_lvsl(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);
- /* substractions 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);
- res1 = vec_mladd(but2, vprod3, op3);
- register vector signed short op3S asm ("v30") = 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 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);
- 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(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;
- }
- int hadamard8_diff16_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h){
- POWERPC_PERF_DECLARE(altivec_hadamard8_diff16_num, 1);
- int score;
- POWERPC_PERF_START_COUNT(altivec_hadamard8_diff16_num, 1);
- 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);
- }
- POWERPC_PERF_STOP_COUNT(altivec_hadamard8_diff16_num, 1);
- return score;
- }
- #endif //CONFIG_DARWIN
- int has_altivec(void)
- {
- #ifdef __AMIGAOS4__
- ULONG result = 0;
- extern struct ExecIFace *IExec;
- IExec->GetCPUInfoTags(GCIT_VectorUnit, &result, TAG_DONE);
- if (result == VECTORTYPE_ALTIVEC) return 1;
- return 0;
- #else /* __AMIGAOS4__ */
- #ifdef CONFIG_DARWIN
- int sels[2] = {CTL_HW, HW_VECTORUNIT};
- int has_vu = 0;
- size_t len = sizeof(has_vu);
- int err;
- err = sysctl(sels, 2, &has_vu, &len, NULL, 0);
- if (err == 0) return (has_vu != 0);
- #else /* CONFIG_DARWIN */
- /* no Darwin, do it the brute-force way */
- /* this is borrowed from the libmpeg2 library */
- {
- signal (SIGILL, sigill_handler);
- if (sigsetjmp (jmpbuf, 1)) {
- signal (SIGILL, SIG_DFL);
- } else {
- canjump = 1;
- asm volatile ("mtspr 256, %0nt"
- "vand %%v0, %%v0, %%v0"
- :
- : "r" (-1));
- signal (SIGILL, SIG_DFL);
- return 1;
- }
- }
- #endif /* CONFIG_DARWIN */
- return 0;
- #endif /* __AMIGAOS4__ */
- }
- /* next one assumes that ((line_size % 8) == 0) */
- void avg_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
- {
- POWERPC_PERF_DECLARE(altivec_avg_pixels8_xy2_num, 1);
- #ifdef ALTIVEC_USE_REFERENCE_C_CODE
- int j;
- POWERPC_PERF_START_COUNT(altivec_avg_pixels8_xy2_num, 1);
- for (j = 0; j < 2; j++) {
- int i;
- const uint32_t a = (((const struct unaligned_32 *) (pixels))->l);
- const uint32_t b = (((const struct unaligned_32 *) (pixels + 1))->l);
- uint32_t l0 = (a & 0x03030303UL) + (b & 0x03030303UL) + 0x02020202UL;
- uint32_t h0 = ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- uint32_t l1, h1;
- pixels += line_size;
- for (i = 0; i < h; i += 2) {
- uint32_t a = (((const struct unaligned_32 *) (pixels))->l);
- uint32_t b = (((const struct unaligned_32 *) (pixels + 1))->l);
- l1 = (a & 0x03030303UL) + (b & 0x03030303UL);
- h1 = ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- *((uint32_t *) block) = rnd_avg32(*((uint32_t *) block), h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL));
- pixels += line_size;
- block += line_size;
- a = (((const struct unaligned_32 *) (pixels))->l);
- b = (((const struct unaligned_32 *) (pixels + 1))->l);
- l0 = (a & 0x03030303UL) + (b & 0x03030303UL) + 0x02020202UL;
- h0 = ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2);
- *((uint32_t *) block) = rnd_avg32(*((uint32_t *) block), h0 + h1 + (((l0 + l1) >> 2) & 0x0F0F0F0FUL));
- pixels += line_size;
- block += line_size;
- } pixels += 4 - line_size * (h + 1);
- block += 4 - line_size * h;
- }
- POWERPC_PERF_STOP_COUNT(altivec_avg_pixels8_xy2_num, 1);
- #else /* ALTIVEC_USE_REFERENCE_C_CODE */
- register int i;
- register vector unsigned char
- pixelsv1, pixelsv2,
- pixelsavg;
- register vector unsigned char
- blockv, temp1, temp2, blocktemp;
- register vector unsigned short
- pixelssum1, pixelssum2, temp3;
- register const_vector unsigned char vczero = (const_vector unsigned char)vec_splat_u8(0);
- register const_vector unsigned short vctwo = (const_vector unsigned short)vec_splat_u16(2);
- temp1 = vec_ld(0, pixels);
- temp2 = vec_ld(16, pixels);
- pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));
- if ((((unsigned long)pixels) & 0x0000000F) == 0x0000000F)
- {
- pixelsv2 = temp2;
- }
- else
- {
- pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));
- }
- pixelsv1 = vec_mergeh(vczero, pixelsv1);
- pixelsv2 = vec_mergeh(vczero, pixelsv2);
- pixelssum1 = vec_add((vector unsigned short)pixelsv1,
- (vector unsigned short)pixelsv2);
- pixelssum1 = vec_add(pixelssum1, vctwo);
- POWERPC_PERF_START_COUNT(altivec_avg_pixels8_xy2_num, 1);
- for (i = 0; i < h ; i++) {
- int rightside = ((unsigned long)block & 0x0000000F);
- blockv = vec_ld(0, block);
- temp1 = vec_ld(line_size, pixels);
- temp2 = vec_ld(line_size + 16, pixels);
- pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));
- if (((((unsigned long)pixels) + line_size) & 0x0000000F) == 0x0000000F)
- {
- pixelsv2 = temp2;
- }
- else
- {
- pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));
- }
- pixelsv1 = vec_mergeh(vczero, pixelsv1);
- pixelsv2 = vec_mergeh(vczero, pixelsv2);
- pixelssum2 = vec_add((vector unsigned short)pixelsv1,
- (vector unsigned short)pixelsv2);
- temp3 = vec_add(pixelssum1, pixelssum2);
- temp3 = vec_sra(temp3, vctwo);
- pixelssum1 = vec_add(pixelssum2, vctwo);
- pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero);
- if (rightside)
- {
- blocktemp = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1));
- }
- else
- {
- blocktemp = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3));
- }
- blockv = vec_avg(blocktemp, blockv);
- vec_st(blockv, 0, block);
- block += line_size;
- pixels += line_size;
- }
- POWERPC_PERF_STOP_COUNT(altivec_avg_pixels8_xy2_num, 1);
- #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
- }