mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-12 19:18:44 +02:00
768 lines
34 KiB
C
768 lines
34 KiB
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 Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; 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
|
|
static int sad16_x2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
|
ptrdiff_t stride, int h)
|
|
{
|
|
int i, s = 0;
|
|
const vector unsigned char zero =
|
|
(const vector unsigned char) vec_splat_u8(0);
|
|
vector unsigned char perm1 = vec_lvsl(0, pix2);
|
|
vector unsigned char perm2 = vec_add(perm1, vec_splat_u8(1));
|
|
vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
|
|
vector signed int sumdiffs;
|
|
|
|
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);
|
|
vector unsigned char pix2l = vec_ld(0, pix2);
|
|
vector unsigned char pix2r = vec_ld(16, pix2);
|
|
vector unsigned char pix2v = vec_perm(pix2l, pix2r, perm1);
|
|
vector unsigned char pix2iv = vec_perm(pix2l, pix2r, 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, s = 0;
|
|
const vector unsigned char zero =
|
|
(const vector unsigned char) vec_splat_u8(0);
|
|
vector unsigned char perm = vec_lvsl(0, pix2);
|
|
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 pix2l = vec_ld(0, pix2);
|
|
vector unsigned char pix2r = vec_ld(15, pix2);
|
|
vector unsigned char pix2v = vec_perm(pix2l, pix2r, perm);
|
|
|
|
for (i = 0; i < h; i++) {
|
|
/* Read unaligned pixels into our vectors. The vectors are as follows:
|
|
* pix1v: pix1[0] - pix1[15]
|
|
* pix3v: pix3[0] - pix3[15] */
|
|
pix1v = vec_ld(0, pix1);
|
|
|
|
pix2l = vec_ld(0, pix3);
|
|
pix2r = vec_ld(15, pix3);
|
|
pix3v = vec_perm(pix2l, pix2r, perm);
|
|
|
|
/* Calculate the average vector. */
|
|
avgv = vec_avg(pix2v, pix3v);
|
|
|
|
/* Calculate a sum of abs differences vector. */
|
|
t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
|
|
|
|
/* Add each 4 pixel group together and put 4 results into sad. */
|
|
sad = vec_sum4s(t5, sad);
|
|
|
|
pix1 += 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, 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 perm1 = vec_lvsl(0, pix2);
|
|
vector unsigned char perm2 = vec_add(perm1, vec_splat_u8(1));
|
|
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;
|
|
|
|
/* 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. */
|
|
vector unsigned char pix2l = vec_ld(0, pix2);
|
|
vector unsigned char pix2r = vec_ld(16, pix2);
|
|
vector unsigned char pix2v = vec_perm(pix2l, pix2r, perm1);
|
|
vector unsigned char pix2iv = vec_perm(pix2l, pix2r, 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);
|
|
|
|
pix2l = vec_ld(0, pix3);
|
|
pix2r = vec_ld(16, pix3);
|
|
pix3v = vec_perm(pix2l, pix2r, perm1);
|
|
pix3iv = vec_perm(pix2l, pix2r, perm2);
|
|
|
|
/* Note that AltiVec does have vec_avg, but this works on vector pairs
|
|
* and rounds up. We could do avg(avg(a, b), avg(c, d)), but the
|
|
* rounding would mean that, for example, avg(3, 0, 0, 1) = 2, when
|
|
* it should be 1. Instead, we have to split the pixel vectors into
|
|
* vectors of shorts and do the averaging by hand. */
|
|
|
|
/* Split the pixel vectors into shorts. */
|
|
pix3hv = (vector unsigned short) vec_mergeh(zero, pix3v);
|
|
pix3lv = (vector unsigned short) vec_mergel(zero, pix3v);
|
|
pix3ihv = (vector unsigned short) vec_mergeh(zero, pix3iv);
|
|
pix3ilv = (vector unsigned short) vec_mergel(zero, pix3iv);
|
|
|
|
/* Do the averaging on them. */
|
|
t3 = vec_add(pix3hv, pix3ihv);
|
|
t4 = vec_add(pix3lv, pix3ilv);
|
|
|
|
avghv = vec_sr(vec_add(vec_add(t1, t3), two), two);
|
|
avglv = vec_sr(vec_add(vec_add(t2, t4), two), two);
|
|
|
|
/* Pack the shorts back into a result. */
|
|
avgv = vec_pack(avghv, avglv);
|
|
|
|
/* Calculate a sum of abs differences vector. */
|
|
t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
|
|
|
|
/* Add each 4 pixel group together and put 4 results into sad. */
|
|
sad = vec_sum4s(t5, sad);
|
|
|
|
pix1 += 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, s;
|
|
const vector unsigned int zero =
|
|
(const vector unsigned int) vec_splat_u32(0);
|
|
vector unsigned char perm = vec_lvsl(0, pix2);
|
|
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 pix2l = vec_ld(0, pix2);
|
|
vector unsigned char pix2r = vec_ld(15, pix2);
|
|
vector unsigned char t1 = vec_ld(0, pix1);
|
|
vector unsigned char t2 = vec_perm(pix2l, pix2r, perm);
|
|
|
|
/* 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, s;
|
|
const vector unsigned int zero =
|
|
(const vector unsigned int) vec_splat_u32(0);
|
|
const vector unsigned char permclear =
|
|
(vector unsigned char)
|
|
{ 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0 };
|
|
vector unsigned char perm1 = vec_lvsl(0, pix1);
|
|
vector unsigned char perm2 = vec_lvsl(0, pix2);
|
|
vector unsigned 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 pix1r = vec_ld(7, pix1);
|
|
vector unsigned char pix2l = vec_ld(0, pix2);
|
|
vector unsigned char pix2r = vec_ld(7, pix2);
|
|
vector unsigned char t1 = vec_and(vec_perm(pix1l, pix1r, perm1),
|
|
permclear);
|
|
vector unsigned char t2 = vec_and(vec_perm(pix2l, pix2r, perm2),
|
|
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, s;
|
|
const vector unsigned int zero =
|
|
(const vector unsigned int) vec_splat_u32(0);
|
|
const vector unsigned char permclear =
|
|
(vector unsigned char)
|
|
{ 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0 };
|
|
vector unsigned char perm1 = vec_lvsl(0, pix1);
|
|
vector unsigned char perm2 = vec_lvsl(0, pix2);
|
|
vector unsigned 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 pix1l = vec_ld(0, pix1);
|
|
vector unsigned char pix1r = vec_ld(7, pix1);
|
|
vector unsigned char pix2l = vec_ld(0, pix2);
|
|
vector unsigned char pix2r = vec_ld(7, pix2);
|
|
vector unsigned char t1 = vec_and(vec_perm(pix1l, pix1r, perm1),
|
|
permclear);
|
|
vector unsigned char t2 = vec_and(vec_perm(pix2l, pix2r, perm2),
|
|
permclear);
|
|
|
|
/* Since we want to use unsigned chars, we can take advantage
|
|
* of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */
|
|
|
|
/* Calculate abs differences vector. */
|
|
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, s;
|
|
const vector unsigned int zero =
|
|
(const vector unsigned int) vec_splat_u32(0);
|
|
vector unsigned char perm = vec_lvsl(0, pix2);
|
|
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 pix2l = vec_ld(0, pix2);
|
|
vector unsigned char pix2r = vec_ld(15, pix2);
|
|
vector unsigned char t1 = vec_ld(0, pix1);
|
|
vector unsigned char t2 = vec_perm(pix2l, pix2r, perm);
|
|
|
|
/* Since we want to use unsigned chars, we can take advantage
|
|
* of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */
|
|
|
|
/* Calculate abs differences vector. */
|
|
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 sum;
|
|
register const vector unsigned char vzero =
|
|
(const vector unsigned char) vec_splat_u8(0);
|
|
register vector signed short temp0, temp1, temp2, temp3, temp4,
|
|
temp5, temp6, temp7;
|
|
{
|
|
register const vector signed short vprod1 =
|
|
(const vector signed short) { 1, -1, 1, -1, 1, -1, 1, -1 };
|
|
register const vector signed short vprod2 =
|
|
(const vector signed short) { 1, 1, -1, -1, 1, 1, -1, -1 };
|
|
register const vector signed short vprod3 =
|
|
(const vector signed short) { 1, 1, 1, 1, -1, -1, -1, -1 };
|
|
register const vector unsigned char perm1 =
|
|
(const vector unsigned char)
|
|
{ 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05,
|
|
0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D };
|
|
register const vector unsigned char perm2 =
|
|
(const vector unsigned char)
|
|
{ 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03,
|
|
0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B };
|
|
register const vector unsigned char perm3 =
|
|
(const vector unsigned char)
|
|
{ 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
|
|
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
|
|
|
|
#define ONEITERBUTTERFLY(i, res) \
|
|
{ \
|
|
register vector unsigned char src1 = vec_ld(stride * i, src); \
|
|
register vector unsigned char src2 = vec_ld(stride * i + 15, src); \
|
|
register vector unsigned char srcO = \
|
|
vec_perm(src1, src2, vec_lvsl(stride * i, src)); \
|
|
register vector unsigned char dst1 = vec_ld(stride * i, dst); \
|
|
register vector unsigned char dst2 = vec_ld(stride * i + 15, dst); \
|
|
register vector unsigned char 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); \
|
|
\
|
|
/* 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 allows to 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 sum;
|
|
register vector signed short
|
|
temp0 __asm__ ("v0"),
|
|
temp1 __asm__ ("v1"),
|
|
temp2 __asm__ ("v2"),
|
|
temp3 __asm__ ("v3"),
|
|
temp4 __asm__ ("v4"),
|
|
temp5 __asm__ ("v5"),
|
|
temp6 __asm__ ("v6"),
|
|
temp7 __asm__ ("v7");
|
|
register vector signed short
|
|
temp0S __asm__ ("v8"),
|
|
temp1S __asm__ ("v9"),
|
|
temp2S __asm__ ("v10"),
|
|
temp3S __asm__ ("v11"),
|
|
temp4S __asm__ ("v12"),
|
|
temp5S __asm__ ("v13"),
|
|
temp6S __asm__ ("v14"),
|
|
temp7S __asm__ ("v15");
|
|
register const vector unsigned char vzero __asm__ ("v31") =
|
|
(const vector unsigned char) vec_splat_u8(0);
|
|
{
|
|
register const vector signed short vprod1 __asm__ ("v16") =
|
|
(const vector signed short) { 1, -1, 1, -1, 1, -1, 1, -1 };
|
|
|
|
register const vector signed short vprod2 __asm__ ("v17") =
|
|
(const vector signed short) { 1, 1, -1, -1, 1, 1, -1, -1 };
|
|
|
|
register const vector signed short vprod3 __asm__ ("v18") =
|
|
(const vector signed short) { 1, 1, 1, 1, -1, -1, -1, -1 };
|
|
|
|
register const vector unsigned char perm1 __asm__ ("v19") =
|
|
(const vector unsigned char)
|
|
{ 0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05,
|
|
0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D };
|
|
|
|
register const vector unsigned char perm2 __asm__ ("v20") =
|
|
(const vector unsigned char)
|
|
{ 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03,
|
|
0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B };
|
|
|
|
register const vector unsigned char perm3 __asm__ ("v21") =
|
|
(const vector unsigned char)
|
|
{ 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
|
|
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
|
|
|
|
#define ONEITERBUTTERFLY(i, res1, res2) \
|
|
{ \
|
|
register vector unsigned char src1 __asm__ ("v22") = \
|
|
vec_ld(stride * i, src); \
|
|
register vector unsigned char src2 __asm__ ("v23") = \
|
|
vec_ld(stride * i + 16, src); \
|
|
register vector unsigned char srcO __asm__ ("v22") = \
|
|
vec_perm(src1, src2, vec_lvsl(stride * i, src)); \
|
|
register vector unsigned char dst1 __asm__ ("v24") = \
|
|
vec_ld(stride * i, dst); \
|
|
register vector unsigned char dst2 __asm__ ("v25") = \
|
|
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); \
|
|
\
|
|
/* 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 */
|
|
}
|