nest-open-source / nest-android-app / ffmpeg / 8e1cc55b733ae723de9931f20a13731bed8162f5 / . / libavcodec / ppc / me_cmp.c

/* | |

* Copyright (c) 2002 Brian Foley | |

* Copyright (c) 2002 Dieter Shirley | |

* Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org> | |

* | |

* This file is part of FFmpeg. | |

* | |

* FFmpeg is free software; you can redistribute it and/or | |

* modify it under the terms of the GNU Lesser General Public | |

* License as published by the Free Software Foundation; either | |

* version 2.1 of the License, or (at your option) any later version. | |

* | |

* FFmpeg is distributed in the hope that it will be useful, | |

* but WITHOUT ANY WARRANTY; without even the implied warranty of | |

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |

* Lesser General Public License for more details. | |

* | |

* You should have received a copy of the GNU Lesser General Public | |

* License along with FFmpeg; if not, write to the Free Software | |

* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |

*/ | |

#include "config.h" | |

#if HAVE_ALTIVEC_H | |

#include <altivec.h> | |

#endif | |

#include "libavutil/attributes.h" | |

#include "libavutil/cpu.h" | |

#include "libavutil/ppc/cpu.h" | |

#include "libavutil/ppc/types_altivec.h" | |

#include "libavutil/ppc/util_altivec.h" | |

#include "libavcodec/avcodec.h" | |

#include "libavcodec/mpegvideo.h" | |

#include "libavcodec/me_cmp.h" | |

#if HAVE_ALTIVEC | |

#if HAVE_BIGENDIAN | |

#define GET_PERM(per1, per2, pix) {\ | |

per1 = vec_lvsl(0, pix);\ | |

per2 = vec_add(per1, vec_splat_u8(1));\ | |

} | |

#define LOAD_PIX(v, iv, pix, per1, per2) {\ | |

vector unsigned char pix2l = vec_ld(0, pix);\ | |

vector unsigned char pix2r = vec_ld(16, pix);\ | |

v = vec_perm(pix2l, pix2r, per1);\ | |

iv = vec_perm(pix2l, pix2r, per2);\ | |

} | |

#else | |

#define GET_PERM(per1, per2, pix) {} | |

#define LOAD_PIX(v, iv, pix, per1, per2) {\ | |

v = vec_vsx_ld(0, pix);\ | |

iv = vec_vsx_ld(1, pix);\ | |

} | |

#endif | |

static int sad16_x2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |

ptrdiff_t stride, int h) | |

{ | |

int i; | |

int __attribute__((aligned(16))) s = 0; | |

const vector unsigned char zero = | |

(const vector unsigned char) vec_splat_u8(0); | |

vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |

vector signed int sumdiffs; | |

vector unsigned char perm1, perm2, pix2v, pix2iv; | |

GET_PERM(perm1, perm2, pix2); | |

for (i = 0; i < h; i++) { | |

/* Read unaligned pixels into our vectors. The vectors are as follows: | |

* pix1v: pix1[0] - pix1[15] | |

* pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16] */ | |

vector unsigned char pix1v = vec_ld(0, pix1); | |

LOAD_PIX(pix2v, pix2iv, pix2, perm1, perm2); | |

/* Calculate the average vector. */ | |

vector unsigned char avgv = vec_avg(pix2v, pix2iv); | |

/* Calculate a sum of abs differences vector. */ | |

vector unsigned char t5 = vec_sub(vec_max(pix1v, avgv), | |

vec_min(pix1v, avgv)); | |

/* Add each 4 pixel group together and put 4 results into sad. */ | |

sad = vec_sum4s(t5, sad); | |

pix1 += stride; | |

pix2 += stride; | |

} | |

/* Sum up the four partial sums, and put the result into s. */ | |

sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |

sumdiffs = vec_splat(sumdiffs, 3); | |

vec_ste(sumdiffs, 0, &s); | |

return s; | |

} | |

static int sad16_y2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |

ptrdiff_t stride, int h) | |

{ | |

int i; | |

int __attribute__((aligned(16))) s = 0; | |

const vector unsigned char zero = | |

(const vector unsigned char) vec_splat_u8(0); | |

vector unsigned char pix1v, pix3v, avgv, t5; | |

vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |

vector signed int sumdiffs; | |

uint8_t *pix3 = pix2 + stride; | |

/* Due to the fact that pix3 = pix2 + stride, the pix3 of one | |

* iteration becomes pix2 in the next iteration. We can use this | |

* fact to avoid a potentially expensive unaligned read, each | |

* time around the loop. | |

* Read unaligned pixels into our vectors. The vectors are as follows: | |

* pix2v: pix2[0] - pix2[15] | |

* Split the pixel vectors into shorts. */ | |

vector unsigned char pix2v = VEC_LD(0, pix2); | |

for (i = 0; i < h; i++) { | |

/* Read unaligned pixels into our vectors. The vectors are as follows: | |

* pix1v: pix1[0] - pix1[15] | |

* pix3v: pix3[0] - pix3[15] */ | |

pix1v = vec_ld(0, pix1); | |

pix3v = VEC_LD(0, pix3); | |

/* Calculate the average vector. */ | |

avgv = vec_avg(pix2v, pix3v); | |

/* Calculate a sum of abs differences vector. */ | |

t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv)); | |

/* Add each 4 pixel group together and put 4 results into sad. */ | |

sad = vec_sum4s(t5, sad); | |

pix1 += stride; | |

pix2v = pix3v; | |

pix3 += stride; | |

} | |

/* Sum up the four partial sums, and put the result into s. */ | |

sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |

sumdiffs = vec_splat(sumdiffs, 3); | |

vec_ste(sumdiffs, 0, &s); | |

return s; | |

} | |

static int sad16_xy2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |

ptrdiff_t stride, int h) | |

{ | |

int i; | |

int __attribute__((aligned(16))) s = 0; | |

uint8_t *pix3 = pix2 + stride; | |

const vector unsigned char zero = | |

(const vector unsigned char) vec_splat_u8(0); | |

const vector unsigned short two = | |

(const vector unsigned short) vec_splat_u16(2); | |

vector unsigned char avgv, t5; | |

vector unsigned char pix1v, pix3v, pix3iv; | |

vector unsigned short pix3lv, pix3hv, pix3ilv, pix3ihv; | |

vector unsigned short avghv, avglv; | |

vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |

vector signed int sumdiffs; | |

vector unsigned char perm1, perm2, pix2v, pix2iv; | |

GET_PERM(perm1, perm2, pix2); | |

/* Due to the fact that pix3 = pix2 + stride, the pix3 of one | |

* iteration becomes pix2 in the next iteration. We can use this | |

* fact to avoid a potentially expensive unaligned read, as well | |

* as some splitting, and vector addition each time around the loop. | |

* Read unaligned pixels into our vectors. The vectors are as follows: | |

* pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16] | |

* Split the pixel vectors into shorts. */ | |

LOAD_PIX(pix2v, pix2iv, pix2, perm1, perm2); | |

vector unsigned short pix2hv = | |

(vector unsigned short) VEC_MERGEH(zero, pix2v); | |

vector unsigned short pix2lv = | |

(vector unsigned short) VEC_MERGEL(zero, pix2v); | |

vector unsigned short pix2ihv = | |

(vector unsigned short) VEC_MERGEH(zero, pix2iv); | |

vector unsigned short pix2ilv = | |

(vector unsigned short) VEC_MERGEL(zero, pix2iv); | |

vector unsigned short t1 = vec_add(pix2hv, pix2ihv); | |

vector unsigned short t2 = vec_add(pix2lv, pix2ilv); | |

vector unsigned short t3, t4; | |

for (i = 0; i < h; i++) { | |

/* Read unaligned pixels into our vectors. The vectors are as follows: | |

* pix1v: pix1[0] - pix1[15] | |

* pix3v: pix3[0] - pix3[15] pix3iv: pix3[1] - pix3[16] */ | |

pix1v = vec_ld(0, pix1); | |

LOAD_PIX(pix3v, pix3iv, pix3, perm1, perm2); | |

/* Note that AltiVec does have vec_avg, but this works on vector pairs | |

* and rounds up. We could do avg(avg(a, b), avg(c, d)), but the | |

* rounding would mean that, for example, avg(3, 0, 0, 1) = 2, when | |

* it should be 1. Instead, we have to split the pixel vectors into | |

* vectors of shorts and do the averaging by hand. */ | |

/* Split the pixel vectors into shorts. */ | |

pix3hv = (vector unsigned short) VEC_MERGEH(zero, pix3v); | |

pix3lv = (vector unsigned short) VEC_MERGEL(zero, pix3v); | |

pix3ihv = (vector unsigned short) VEC_MERGEH(zero, pix3iv); | |

pix3ilv = (vector unsigned short) VEC_MERGEL(zero, pix3iv); | |

/* Do the averaging on them. */ | |

t3 = vec_add(pix3hv, pix3ihv); | |

t4 = vec_add(pix3lv, pix3ilv); | |

avghv = vec_sr(vec_add(vec_add(t1, t3), two), two); | |

avglv = vec_sr(vec_add(vec_add(t2, t4), two), two); | |

/* Pack the shorts back into a result. */ | |

avgv = vec_pack(avghv, avglv); | |

/* Calculate a sum of abs differences vector. */ | |

t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv)); | |

/* Add each 4 pixel group together and put 4 results into sad. */ | |

sad = vec_sum4s(t5, sad); | |

pix1 += stride; | |

pix3 += stride; | |

/* Transfer the calculated values for pix3 into pix2. */ | |

t1 = t3; | |

t2 = t4; | |

} | |

/* Sum up the four partial sums, and put the result into s. */ | |

sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |

sumdiffs = vec_splat(sumdiffs, 3); | |

vec_ste(sumdiffs, 0, &s); | |

return s; | |

} | |

static int sad16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |

ptrdiff_t stride, int h) | |

{ | |

int i; | |

int __attribute__((aligned(16))) s; | |

const vector unsigned int zero = | |

(const vector unsigned int) vec_splat_u32(0); | |

vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |

vector signed int sumdiffs; | |

for (i = 0; i < h; i++) { | |

/* Read potentially unaligned pixels into t1 and t2. */ | |

vector unsigned char t1 =vec_ld(0, pix1); | |

vector unsigned char t2 = VEC_LD(0, pix2); | |

/* Calculate a sum of abs differences vector. */ | |

vector unsigned char t3 = vec_max(t1, t2); | |

vector unsigned char t4 = vec_min(t1, t2); | |

vector unsigned char t5 = vec_sub(t3, t4); | |

/* Add each 4 pixel group together and put 4 results into sad. */ | |

sad = vec_sum4s(t5, sad); | |

pix1 += stride; | |

pix2 += stride; | |

} | |

/* Sum up the four partial sums, and put the result into s. */ | |

sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |

sumdiffs = vec_splat(sumdiffs, 3); | |

vec_ste(sumdiffs, 0, &s); | |

return s; | |

} | |

static int sad8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |

ptrdiff_t stride, int h) | |

{ | |

int i; | |

int __attribute__((aligned(16))) s; | |

const vector unsigned int zero = | |

(const vector unsigned int) vec_splat_u32(0); | |

const vector unsigned char permclear = | |

(vector unsigned char) | |

{ 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0 }; | |

vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); | |

vector signed int sumdiffs; | |

for (i = 0; i < h; i++) { | |

/* Read potentially unaligned pixels into t1 and t2. | |

* Since we're reading 16 pixels, and actually only want 8, | |

* mask out the last 8 pixels. The 0s don't change the sum. */ | |

vector unsigned char pix1l = VEC_LD(0, pix1); | |

vector unsigned char pix2l = VEC_LD(0, pix2); | |

vector unsigned char t1 = vec_and(pix1l, permclear); | |

vector unsigned char t2 = vec_and(pix2l, permclear); | |

/* Calculate a sum of abs differences vector. */ | |

vector unsigned char t3 = vec_max(t1, t2); | |

vector unsigned char t4 = vec_min(t1, t2); | |

vector unsigned char t5 = vec_sub(t3, t4); | |

/* Add each 4 pixel group together and put 4 results into sad. */ | |

sad = vec_sum4s(t5, sad); | |

pix1 += stride; | |

pix2 += stride; | |

} | |

/* Sum up the four partial sums, and put the result into s. */ | |

sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); | |

sumdiffs = vec_splat(sumdiffs, 3); | |

vec_ste(sumdiffs, 0, &s); | |

return s; | |

} | |

/* Sum of Squared Errors for an 8x8 block, AltiVec-enhanced. | |

* It's the sad8_altivec code above w/ squaring added. */ | |

static int sse8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |

ptrdiff_t stride, int h) | |

{ | |

int i; | |

int __attribute__((aligned(16))) s; | |

const vector unsigned int zero = | |

(const vector unsigned int) vec_splat_u32(0); | |

const vector unsigned char permclear = | |

(vector unsigned char) | |

{ 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0 }; | |

vector unsigned int sum = (vector unsigned int) vec_splat_u32(0); | |

vector signed int sumsqr; | |

for (i = 0; i < h; i++) { | |

/* Read potentially unaligned pixels into t1 and t2. | |

* Since we're reading 16 pixels, and actually only want 8, | |

* mask out the last 8 pixels. The 0s don't change the sum. */ | |

vector unsigned char t1 = vec_and(VEC_LD(0, pix1), permclear); | |

vector unsigned char t2 = vec_and(VEC_LD(0, pix2), permclear); | |

/* Since we want to use unsigned chars, we can take advantage | |

* of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */ | |

/* Calculate abs differences vector. */ | |

vector unsigned char t3 = vec_max(t1, t2); | |

vector unsigned char t4 = vec_min(t1, t2); | |

vector unsigned char t5 = vec_sub(t3, t4); | |

/* Square the values and add them to our sum. */ | |

sum = vec_msum(t5, t5, sum); | |

pix1 += stride; | |

pix2 += stride; | |

} | |

/* Sum up the four partial sums, and put the result into s. */ | |

sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero); | |

sumsqr = vec_splat(sumsqr, 3); | |

vec_ste(sumsqr, 0, &s); | |

return s; | |

} | |

/* Sum of Squared Errors for a 16x16 block, AltiVec-enhanced. | |

* It's the sad16_altivec code above w/ squaring added. */ | |

static int sse16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, | |

ptrdiff_t stride, int h) | |

{ | |

int i; | |

int __attribute__((aligned(16))) s; | |

const vector unsigned int zero = | |

(const vector unsigned int) vec_splat_u32(0); | |

vector unsigned int sum = (vector unsigned int) vec_splat_u32(0); | |

vector signed int sumsqr; | |

for (i = 0; i < h; i++) { | |

/* Read potentially unaligned pixels into t1 and t2. */ | |

vector unsigned char t1 = vec_ld(0, pix1); | |

vector unsigned char t2 = VEC_LD(0, pix2); | |

/* Since we want to use unsigned chars, we can take advantage | |

* of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */ | |

/* Calculate abs differences vector. */ | |

vector unsigned char t3 = vec_max(t1, t2); | |

vector unsigned char t4 = vec_min(t1, t2); | |

vector unsigned char t5 = vec_sub(t3, t4); | |

/* Square the values and add them to our sum. */ | |

sum = vec_msum(t5, t5, sum); | |

pix1 += stride; | |

pix2 += stride; | |

} | |

/* Sum up the four partial sums, and put the result into s. */ | |

sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero); | |

sumsqr = vec_splat(sumsqr, 3); | |

vec_ste(sumsqr, 0, &s); | |

return s; | |

} | |

static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst, | |

uint8_t *src, ptrdiff_t stride, int h) | |

{ | |

int __attribute__((aligned(16))) sum; | |

register const vector unsigned char vzero = | |

(const vector unsigned char) vec_splat_u8(0); | |

register vector signed short temp0, temp1, temp2, temp3, temp4, | |

temp5, temp6, temp7; | |

{ | |

register const vector signed short vprod1 = | |

(const vector signed short) { 1, -1, 1, -1, 1, -1, 1, -1 }; | |

register const vector signed short vprod2 = | |

(const vector signed short) { 1, 1, -1, -1, 1, 1, -1, -1 }; | |

register const vector signed short vprod3 = | |

(const vector signed short) { 1, 1, 1, 1, -1, -1, -1, -1 }; | |

register const vector unsigned char perm1 = | |

(const vector unsigned char) | |

{ 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, | |

0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D }; | |

register const vector unsigned char perm2 = | |

(const vector unsigned char) | |

{ 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, | |

0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B }; | |

register const vector unsigned char perm3 = | |

(const vector unsigned char) | |

{ 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, | |

0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; | |

#define ONEITERBUTTERFLY(i, res) \ | |

{ \ | |

register vector unsigned char srcO = unaligned_load(stride * i, src); \ | |

register vector unsigned char dstO = unaligned_load(stride * i, dst);\ | |

\ | |

/* Promote the unsigned chars to signed shorts. */ \ | |

/* We're in the 8x8 function, we only care for the first 8. */ \ | |

register vector signed short srcV = \ | |

(vector signed short) VEC_MERGEH((vector signed char) vzero, \ | |

(vector signed char) srcO); \ | |

register vector signed short dstV = \ | |

(vector signed short) VEC_MERGEH((vector signed char) vzero, \ | |

(vector signed char) dstO); \ | |

\ | |

/* subtractions inside the first butterfly */ \ | |

register vector signed short but0 = vec_sub(srcV, dstV); \ | |

register vector signed short op1 = vec_perm(but0, but0, perm1); \ | |

register vector signed short but1 = vec_mladd(but0, vprod1, op1); \ | |

register vector signed short op2 = vec_perm(but1, but1, perm2); \ | |

register vector signed short but2 = vec_mladd(but1, vprod2, op2); \ | |

register vector signed short op3 = vec_perm(but2, but2, perm3); \ | |

res = vec_mladd(but2, vprod3, op3); \ | |

} | |

ONEITERBUTTERFLY(0, temp0); | |

ONEITERBUTTERFLY(1, temp1); | |

ONEITERBUTTERFLY(2, temp2); | |

ONEITERBUTTERFLY(3, temp3); | |

ONEITERBUTTERFLY(4, temp4); | |

ONEITERBUTTERFLY(5, temp5); | |

ONEITERBUTTERFLY(6, temp6); | |

ONEITERBUTTERFLY(7, temp7); | |

} | |

#undef ONEITERBUTTERFLY | |

{ | |

register vector signed int vsum; | |

register vector signed short line0 = vec_add(temp0, temp1); | |

register vector signed short line1 = vec_sub(temp0, temp1); | |

register vector signed short line2 = vec_add(temp2, temp3); | |

register vector signed short line3 = vec_sub(temp2, temp3); | |

register vector signed short line4 = vec_add(temp4, temp5); | |

register vector signed short line5 = vec_sub(temp4, temp5); | |

register vector signed short line6 = vec_add(temp6, temp7); | |

register vector signed short line7 = vec_sub(temp6, temp7); | |

register vector signed short line0B = vec_add(line0, line2); | |

register vector signed short line2B = vec_sub(line0, line2); | |

register vector signed short line1B = vec_add(line1, line3); | |

register vector signed short line3B = vec_sub(line1, line3); | |

register vector signed short line4B = vec_add(line4, line6); | |

register vector signed short line6B = vec_sub(line4, line6); | |

register vector signed short line5B = vec_add(line5, line7); | |

register vector signed short line7B = vec_sub(line5, line7); | |

register vector signed short line0C = vec_add(line0B, line4B); | |

register vector signed short line4C = vec_sub(line0B, line4B); | |

register vector signed short line1C = vec_add(line1B, line5B); | |

register vector signed short line5C = vec_sub(line1B, line5B); | |

register vector signed short line2C = vec_add(line2B, line6B); | |

register vector signed short line6C = vec_sub(line2B, line6B); | |

register vector signed short line3C = vec_add(line3B, line7B); | |

register vector signed short line7C = vec_sub(line3B, line7B); | |

vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0)); | |

vsum = vec_sum4s(vec_abs(line1C), vsum); | |

vsum = vec_sum4s(vec_abs(line2C), vsum); | |

vsum = vec_sum4s(vec_abs(line3C), vsum); | |

vsum = vec_sum4s(vec_abs(line4C), vsum); | |

vsum = vec_sum4s(vec_abs(line5C), vsum); | |

vsum = vec_sum4s(vec_abs(line6C), vsum); | |

vsum = vec_sum4s(vec_abs(line7C), vsum); | |

vsum = vec_sums(vsum, (vector signed int) vzero); | |

vsum = vec_splat(vsum, 3); | |

vec_ste(vsum, 0, &sum); | |

} | |

return sum; | |

} | |

/* | |

* 16x8 works with 16 elements; it can avoid replicating loads, and | |

* gives the compiler more room for scheduling. It's only used from | |

* inside hadamard8_diff16_altivec. | |

* | |

* Unfortunately, it seems gcc-3.3 is a bit dumb, and the compiled code has | |

* a LOT of spill code, it seems gcc (unlike xlc) cannot keep everything in | |

* registers by itself. The following code includes hand-made register | |

* allocation. It's not clean, but on a 7450 the resulting code is much faster | |

* (best case falls from 700+ cycles to 550). | |

* | |

* xlc doesn't add spill code, but it doesn't know how to schedule for the | |

* 7450, and its code isn't much faster than gcc-3.3 on the 7450 (but uses | |

* 25% fewer instructions...) | |

* | |

* On the 970, the hand-made RA is still a win (around 690 vs. around 780), | |

* but xlc goes to around 660 on the regular C code... | |

*/ | |

static int hadamard8_diff16x8_altivec(MpegEncContext *s, uint8_t *dst, | |

uint8_t *src, ptrdiff_t stride, int h) | |

{ | |

int __attribute__((aligned(16))) sum; | |

register vector signed short | |

temp0 __asm__ ("v0"), | |

temp1 __asm__ ("v1"), | |

temp2 __asm__ ("v2"), | |

temp3 __asm__ ("v3"), | |

temp4 __asm__ ("v4"), | |

temp5 __asm__ ("v5"), | |

temp6 __asm__ ("v6"), | |

temp7 __asm__ ("v7"); | |

register vector signed short | |

temp0S __asm__ ("v8"), | |

temp1S __asm__ ("v9"), | |

temp2S __asm__ ("v10"), | |

temp3S __asm__ ("v11"), | |

temp4S __asm__ ("v12"), | |

temp5S __asm__ ("v13"), | |

temp6S __asm__ ("v14"), | |

temp7S __asm__ ("v15"); | |

register const vector unsigned char vzero __asm__ ("v31") = | |

(const vector unsigned char) vec_splat_u8(0); | |

{ | |

register const vector signed short vprod1 __asm__ ("v16") = | |

(const vector signed short) { 1, -1, 1, -1, 1, -1, 1, -1 }; | |

register const vector signed short vprod2 __asm__ ("v17") = | |

(const vector signed short) { 1, 1, -1, -1, 1, 1, -1, -1 }; | |

register const vector signed short vprod3 __asm__ ("v18") = | |

(const vector signed short) { 1, 1, 1, 1, -1, -1, -1, -1 }; | |

register const vector unsigned char perm1 __asm__ ("v19") = | |

(const vector unsigned char) | |

{ 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05, | |

0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D }; | |

register const vector unsigned char perm2 __asm__ ("v20") = | |

(const vector unsigned char) | |

{ 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03, | |

0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B }; | |

register const vector unsigned char perm3 __asm__ ("v21") = | |

(const vector unsigned char) | |

{ 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, | |

0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; | |

#define ONEITERBUTTERFLY(i, res1, res2) \ | |

{ \ | |

register vector unsigned char srcO __asm__ ("v22") = \ | |

unaligned_load(stride * i, src); \ | |

register vector unsigned char dstO __asm__ ("v23") = \ | |

unaligned_load(stride * i, dst);\ | |

\ | |

/* Promote the unsigned chars to signed shorts. */ \ | |

register vector signed short srcV __asm__ ("v24") = \ | |

(vector signed short) VEC_MERGEH((vector signed char) vzero, \ | |

(vector signed char) srcO); \ | |

register vector signed short dstV __asm__ ("v25") = \ | |

(vector signed short) VEC_MERGEH((vector signed char) vzero, \ | |

(vector signed char) dstO); \ | |

register vector signed short srcW __asm__ ("v26") = \ | |

(vector signed short) VEC_MERGEL((vector signed char) vzero, \ | |

(vector signed char) srcO); \ | |

register vector signed short dstW __asm__ ("v27") = \ | |

(vector signed short) VEC_MERGEL((vector signed char) vzero, \ | |

(vector signed char) dstO); \ | |

\ | |

/* subtractions inside the first butterfly */ \ | |

register vector signed short but0 __asm__ ("v28") = \ | |

vec_sub(srcV, dstV); \ | |

register vector signed short but0S __asm__ ("v29") = \ | |

vec_sub(srcW, dstW); \ | |

register vector signed short op1 __asm__ ("v30") = \ | |

vec_perm(but0, but0, perm1); \ | |

register vector signed short but1 __asm__ ("v22") = \ | |

vec_mladd(but0, vprod1, op1); \ | |

register vector signed short op1S __asm__ ("v23") = \ | |

vec_perm(but0S, but0S, perm1); \ | |

register vector signed short but1S __asm__ ("v24") = \ | |

vec_mladd(but0S, vprod1, op1S); \ | |

register vector signed short op2 __asm__ ("v25") = \ | |

vec_perm(but1, but1, perm2); \ | |

register vector signed short but2 __asm__ ("v26") = \ | |

vec_mladd(but1, vprod2, op2); \ | |

register vector signed short op2S __asm__ ("v27") = \ | |

vec_perm(but1S, but1S, perm2); \ | |

register vector signed short but2S __asm__ ("v28") = \ | |

vec_mladd(but1S, vprod2, op2S); \ | |

register vector signed short op3 __asm__ ("v29") = \ | |

vec_perm(but2, but2, perm3); \ | |

register vector signed short op3S __asm__ ("v30") = \ | |

vec_perm(but2S, but2S, perm3); \ | |

res1 = vec_mladd(but2, vprod3, op3); \ | |

res2 = vec_mladd(but2S, vprod3, op3S); \ | |

} | |

ONEITERBUTTERFLY(0, temp0, temp0S); | |

ONEITERBUTTERFLY(1, temp1, temp1S); | |

ONEITERBUTTERFLY(2, temp2, temp2S); | |

ONEITERBUTTERFLY(3, temp3, temp3S); | |

ONEITERBUTTERFLY(4, temp4, temp4S); | |

ONEITERBUTTERFLY(5, temp5, temp5S); | |

ONEITERBUTTERFLY(6, temp6, temp6S); | |

ONEITERBUTTERFLY(7, temp7, temp7S); | |

} | |

#undef ONEITERBUTTERFLY | |

{ | |

register vector signed int vsum; | |

register vector signed short line0 = vec_add(temp0, temp1); | |

register vector signed short line1 = vec_sub(temp0, temp1); | |

register vector signed short line2 = vec_add(temp2, temp3); | |

register vector signed short line3 = vec_sub(temp2, temp3); | |

register vector signed short line4 = vec_add(temp4, temp5); | |

register vector signed short line5 = vec_sub(temp4, temp5); | |

register vector signed short line6 = vec_add(temp6, temp7); | |

register vector signed short line7 = vec_sub(temp6, temp7); | |

register vector signed short line0B = vec_add(line0, line2); | |

register vector signed short line2B = vec_sub(line0, line2); | |

register vector signed short line1B = vec_add(line1, line3); | |

register vector signed short line3B = vec_sub(line1, line3); | |

register vector signed short line4B = vec_add(line4, line6); | |

register vector signed short line6B = vec_sub(line4, line6); | |

register vector signed short line5B = vec_add(line5, line7); | |

register vector signed short line7B = vec_sub(line5, line7); | |

register vector signed short line0C = vec_add(line0B, line4B); | |

register vector signed short line4C = vec_sub(line0B, line4B); | |

register vector signed short line1C = vec_add(line1B, line5B); | |

register vector signed short line5C = vec_sub(line1B, line5B); | |

register vector signed short line2C = vec_add(line2B, line6B); | |

register vector signed short line6C = vec_sub(line2B, line6B); | |

register vector signed short line3C = vec_add(line3B, line7B); | |

register vector signed short line7C = vec_sub(line3B, line7B); | |

register vector signed short line0S = vec_add(temp0S, temp1S); | |

register vector signed short line1S = vec_sub(temp0S, temp1S); | |

register vector signed short line2S = vec_add(temp2S, temp3S); | |

register vector signed short line3S = vec_sub(temp2S, temp3S); | |

register vector signed short line4S = vec_add(temp4S, temp5S); | |

register vector signed short line5S = vec_sub(temp4S, temp5S); | |

register vector signed short line6S = vec_add(temp6S, temp7S); | |

register vector signed short line7S = vec_sub(temp6S, temp7S); | |

register vector signed short line0BS = vec_add(line0S, line2S); | |

register vector signed short line2BS = vec_sub(line0S, line2S); | |

register vector signed short line1BS = vec_add(line1S, line3S); | |

register vector signed short line3BS = vec_sub(line1S, line3S); | |

register vector signed short line4BS = vec_add(line4S, line6S); | |

register vector signed short line6BS = vec_sub(line4S, line6S); | |

register vector signed short line5BS = vec_add(line5S, line7S); | |

register vector signed short line7BS = vec_sub(line5S, line7S); | |

register vector signed short line0CS = vec_add(line0BS, line4BS); | |

register vector signed short line4CS = vec_sub(line0BS, line4BS); | |

register vector signed short line1CS = vec_add(line1BS, line5BS); | |

register vector signed short line5CS = vec_sub(line1BS, line5BS); | |

register vector signed short line2CS = vec_add(line2BS, line6BS); | |

register vector signed short line6CS = vec_sub(line2BS, line6BS); | |

register vector signed short line3CS = vec_add(line3BS, line7BS); | |

register vector signed short line7CS = vec_sub(line3BS, line7BS); | |

vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0)); | |

vsum = vec_sum4s(vec_abs(line1C), vsum); | |

vsum = vec_sum4s(vec_abs(line2C), vsum); | |

vsum = vec_sum4s(vec_abs(line3C), vsum); | |

vsum = vec_sum4s(vec_abs(line4C), vsum); | |

vsum = vec_sum4s(vec_abs(line5C), vsum); | |

vsum = vec_sum4s(vec_abs(line6C), vsum); | |

vsum = vec_sum4s(vec_abs(line7C), vsum); | |

vsum = vec_sum4s(vec_abs(line0CS), vsum); | |

vsum = vec_sum4s(vec_abs(line1CS), vsum); | |

vsum = vec_sum4s(vec_abs(line2CS), vsum); | |

vsum = vec_sum4s(vec_abs(line3CS), vsum); | |

vsum = vec_sum4s(vec_abs(line4CS), vsum); | |

vsum = vec_sum4s(vec_abs(line5CS), vsum); | |

vsum = vec_sum4s(vec_abs(line6CS), vsum); | |

vsum = vec_sum4s(vec_abs(line7CS), vsum); | |

vsum = vec_sums(vsum, (vector signed int) vzero); | |

vsum = vec_splat(vsum, 3); | |

vec_ste(vsum, 0, &sum); | |

} | |

return sum; | |

} | |

static int hadamard8_diff16_altivec(MpegEncContext *s, uint8_t *dst, | |

uint8_t *src, ptrdiff_t stride, int h) | |

{ | |

int score = hadamard8_diff16x8_altivec(s, dst, src, stride, 8); | |

if (h == 16) { | |

dst += 8 * stride; | |

src += 8 * stride; | |

score += hadamard8_diff16x8_altivec(s, dst, src, stride, 8); | |

} | |

return score; | |

} | |

#endif /* HAVE_ALTIVEC */ | |

av_cold void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx) | |

{ | |

#if HAVE_ALTIVEC | |

if (!PPC_ALTIVEC(av_get_cpu_flags())) | |

return; | |

c->pix_abs[0][1] = sad16_x2_altivec; | |

c->pix_abs[0][2] = sad16_y2_altivec; | |

c->pix_abs[0][3] = sad16_xy2_altivec; | |

c->pix_abs[0][0] = sad16_altivec; | |

c->pix_abs[1][0] = sad8_altivec; | |

c->sad[0] = sad16_altivec; | |

c->sad[1] = sad8_altivec; | |

c->sse[0] = sse16_altivec; | |

c->sse[1] = sse8_altivec; | |

c->hadamard8_diff[0] = hadamard8_diff16_altivec; | |

c->hadamard8_diff[1] = hadamard8_diff8x8_altivec; | |

#endif /* HAVE_ALTIVEC */ | |

} |