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143 lines
4.0 KiB
143 lines
4.0 KiB
#include "../dsputil.h" |
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#if CONFIG_DARWIN |
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#include <sys/sysctl.h> |
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#endif |
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int pix_abs16x16_altivec(uint8_t *pix1, uint8_t *pix2, int line_size); |
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int pix_abs8x8_altivec(uint8_t *pix1, uint8_t *pix2, int line_size); |
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int pix_sum_altivec(UINT8 * pix, int line_size); |
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int has_altivec(void); |
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int pix_abs16x16_altivec(uint8_t *pix1, uint8_t *pix2, int line_size) |
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{ |
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int i, s; |
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vector unsigned char perm1, perm2, *pix1v, *pix2v; |
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vector unsigned char t1, t2, t3,t4, t5; |
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vector unsigned int sad, zero; |
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vector signed int sumdiffs; |
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zero = (vector unsigned int) (0); |
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sad = (vector unsigned int) (0); |
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for(i=0;i<16;i++) { |
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/* Read potentially unaligned pixels into t1 and t2 */ |
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perm1 = vec_lvsl(0, pix1); |
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pix1v = (vector unsigned char *) pix1; |
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perm2 = vec_lvsl(0, pix2); |
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pix2v = (vector unsigned char *) pix2; |
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t1 = vec_perm(pix1v[0], pix1v[1], perm1); |
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t2 = vec_perm(pix2v[0], pix2v[1], perm2); |
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/* Calculate a sum of abs differences vector */ |
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t3 = vec_max(t1, t2); |
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t4 = vec_min(t1, t2); |
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t5 = vec_sub(t3, t4); |
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/* Add each 4 pixel group together and put 4 results into sad */ |
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sad = vec_sum4s(t5, sad); |
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pix1 += line_size; |
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pix2 += line_size; |
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} |
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/* Sum up the four partial sums, and put the result into s */ |
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sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); |
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sumdiffs = vec_splat(sumdiffs, 3); |
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vec_ste(sumdiffs, 0, &s); |
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return s; |
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} |
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int pix_abs8x8_altivec(uint8_t *pix1, uint8_t *pix2, int line_size) |
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{ |
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int i, s; |
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vector unsigned char perm1, perm2, permclear, *pix1v, *pix2v; |
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vector unsigned char t1, t2, t3,t4, t5; |
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vector unsigned int sad, zero; |
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vector signed int sumdiffs; |
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zero = (vector unsigned int) (0); |
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sad = (vector unsigned int) (0); |
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permclear = (vector unsigned char) (255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0); |
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for(i=0;i<8;i++) { |
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/* Read potentially unaligned pixels into t1 and t2 |
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Since we're reading 16 pixels, and actually only want 8, |
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mask out the last 8 pixels. The 0s don't change the sum. */ |
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perm1 = vec_lvsl(0, pix1); |
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pix1v = (vector unsigned char *) pix1; |
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perm2 = vec_lvsl(0, pix2); |
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pix2v = (vector unsigned char *) pix2; |
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t1 = vec_and(vec_perm(pix1v[0], pix1v[1], perm1), permclear); |
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t2 = vec_and(vec_perm(pix2v[0], pix2v[1], perm2), permclear); |
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/* Calculate a sum of abs differences vector */ |
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t3 = vec_max(t1, t2); |
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t4 = vec_min(t1, t2); |
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t5 = vec_sub(t3, t4); |
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/* Add each 4 pixel group together and put 4 results into sad */ |
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sad = vec_sum4s(t5, sad); |
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pix1 += line_size; |
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pix2 += line_size; |
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} |
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/* Sum up the four partial sums, and put the result into s */ |
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sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); |
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sumdiffs = vec_splat(sumdiffs, 3); |
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vec_ste(sumdiffs, 0, &s); |
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return s; |
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} |
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int pix_sum_altivec(UINT8 * pix, int line_size) |
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{ |
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vector unsigned char perm, *pixv; |
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vector unsigned char t1; |
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vector unsigned int sad, zero; |
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vector signed int sumdiffs; |
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int s, i; |
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zero = (vector unsigned int) (0); |
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sad = (vector unsigned int) (0); |
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for (i = 0; i < 16; i++) { |
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/* Read the potentially unaligned 16 pixels into t1 */ |
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perm = vec_lvsl(0, pix); |
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pixv = (vector unsigned char *) pix; |
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t1 = vec_perm(pixv[0], pixv[1], perm); |
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/* Add each 4 pixel group together and put 4 results into sad */ |
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sad = vec_sum4s(t1, sad); |
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pix += line_size; |
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} |
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/* Sum up the four partial sums, and put the result into s */ |
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sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); |
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sumdiffs = vec_splat(sumdiffs, 3); |
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vec_ste(sumdiffs, 0, &s); |
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return s; |
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} |
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int has_altivec(void) |
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{ |
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#if CONFIG_DARWIN |
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int sels[2] = {CTL_HW, HW_VECTORUNIT}; |
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int has_vu = 0; |
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size_t len = sizeof(has_vu); |
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int err; |
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err = sysctl(sels, 2, &has_vu, &len, NULL, 0); |
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if (err == 0) return (has_vu != 0); |
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#endif |
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return 0; |
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}
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