libavcodec/me_cmp.c
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 /*
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  * DSP utils
  * Copyright (c) 2000, 2001 Fabrice Bellard
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
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  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
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  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
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  * version 2.1 of the License, or (at your option) any later version.
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  *
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  * FFmpeg is distributed in the hope that it will be useful,
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  * but WITHOUT ANY WARRANTY; without even the implied warranty of
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  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
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  *
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  * You should have received a copy of the GNU Lesser General Public
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  * License along with FFmpeg; if not, write to the Free Software
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  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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  */
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 #include "libavutil/attributes.h"
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 #include "libavutil/internal.h"
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 #include "avcodec.h"
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 #include "copy_block.h"
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 #include "simple_idct.h"
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 #include "me_cmp.h"
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 #include "mpegvideo.h"
 #include "config.h"
5596c60c
 
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 uint32_t ff_square_tab[512] = { 0, };
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 static int sse4_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
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                   ptrdiff_t stride, int h)
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 {
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     int s = 0, i;
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     uint32_t *sq = ff_square_tab + 256;
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     for (i = 0; i < h; i++) {
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         s    += sq[pix1[0] - pix2[0]];
         s    += sq[pix1[1] - pix2[1]];
         s    += sq[pix1[2] - pix2[2]];
         s    += sq[pix1[3] - pix2[3]];
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         pix1 += stride;
         pix2 += stride;
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     }
     return s;
 }
 
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 static int sse8_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
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                   ptrdiff_t stride, int h)
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 {
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     int s = 0, i;
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     uint32_t *sq = ff_square_tab + 256;
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     for (i = 0; i < h; i++) {
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         s    += sq[pix1[0] - pix2[0]];
         s    += sq[pix1[1] - pix2[1]];
         s    += sq[pix1[2] - pix2[2]];
         s    += sq[pix1[3] - pix2[3]];
         s    += sq[pix1[4] - pix2[4]];
         s    += sq[pix1[5] - pix2[5]];
         s    += sq[pix1[6] - pix2[6]];
         s    += sq[pix1[7] - pix2[7]];
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         pix1 += stride;
         pix2 += stride;
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     }
     return s;
 }
 
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 static int sse16_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
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                    ptrdiff_t stride, int h)
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 {
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     int s = 0, i;
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     uint32_t *sq = ff_square_tab + 256;
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     for (i = 0; i < h; i++) {
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         s += sq[pix1[0]  - pix2[0]];
         s += sq[pix1[1]  - pix2[1]];
         s += sq[pix1[2]  - pix2[2]];
         s += sq[pix1[3]  - pix2[3]];
         s += sq[pix1[4]  - pix2[4]];
         s += sq[pix1[5]  - pix2[5]];
         s += sq[pix1[6]  - pix2[6]];
         s += sq[pix1[7]  - pix2[7]];
         s += sq[pix1[8]  - pix2[8]];
         s += sq[pix1[9]  - pix2[9]];
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         s += sq[pix1[10] - pix2[10]];
         s += sq[pix1[11] - pix2[11]];
         s += sq[pix1[12] - pix2[12]];
         s += sq[pix1[13] - pix2[13]];
         s += sq[pix1[14] - pix2[14]];
         s += sq[pix1[15] - pix2[15]];
2a006cd3
 
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         pix1 += stride;
         pix2 += stride;
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     }
     return s;
 }
 
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 static int sum_abs_dctelem_c(int16_t *block)
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 {
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     int sum = 0, i;
 
     for (i = 0; i < 64; i++)
         sum += FFABS(block[i]);
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     return sum;
 }
 
23578226
 #define avg2(a, b) (((a) + (b) + 1) >> 1)
 #define avg4(a, b, c, d) (((a) + (b) + (c) + (d) + 2) >> 2)
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 static inline int pix_abs16_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
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                               ptrdiff_t stride, int h)
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 {
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     int s = 0, i;
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     for (i = 0; i < h; i++) {
         s    += abs(pix1[0]  - pix2[0]);
         s    += abs(pix1[1]  - pix2[1]);
         s    += abs(pix1[2]  - pix2[2]);
         s    += abs(pix1[3]  - pix2[3]);
         s    += abs(pix1[4]  - pix2[4]);
         s    += abs(pix1[5]  - pix2[5]);
         s    += abs(pix1[6]  - pix2[6]);
         s    += abs(pix1[7]  - pix2[7]);
         s    += abs(pix1[8]  - pix2[8]);
         s    += abs(pix1[9]  - pix2[9]);
         s    += abs(pix1[10] - pix2[10]);
         s    += abs(pix1[11] - pix2[11]);
         s    += abs(pix1[12] - pix2[12]);
         s    += abs(pix1[13] - pix2[13]);
         s    += abs(pix1[14] - pix2[14]);
         s    += abs(pix1[15] - pix2[15]);
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         pix1 += stride;
         pix2 += stride;
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     }
     return s;
 }
 
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 static inline int pix_median_abs16_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
                              ptrdiff_t stride, int h)
 {
     int s = 0, i, j;
 
 #define V(x) (pix1[x] - pix2[x])
 
     s    += abs(V(0));
     s    += abs(V(1) - V(0));
     s    += abs(V(2) - V(1));
     s    += abs(V(3) - V(2));
     s    += abs(V(4) - V(3));
     s    += abs(V(5) - V(4));
     s    += abs(V(6) - V(5));
     s    += abs(V(7) - V(6));
     s    += abs(V(8) - V(7));
     s    += abs(V(9) - V(8));
     s    += abs(V(10) - V(9));
     s    += abs(V(11) - V(10));
     s    += abs(V(12) - V(11));
     s    += abs(V(13) - V(12));
     s    += abs(V(14) - V(13));
     s    += abs(V(15) - V(14));
 
     pix1 += stride;
     pix2 += stride;
 
     for (i = 1; i < h; i++) {
         s    += abs(V(0) - V(-stride));
         for (j = 1; j < 16; j++)
             s    += abs(V(j) - mid_pred(V(j-stride), V(j-1), V(j-stride) + V(j-1) - V(j-stride-1)));
         pix1 += stride;
         pix2 += stride;
 
     }
 #undef V
     return s;
 }
 
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 static int pix_abs16_x2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
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                           ptrdiff_t stride, int h)
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 {
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     int s = 0, i;
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bb12c2e9
     for (i = 0; i < h; i++) {
         s    += abs(pix1[0]  - avg2(pix2[0],  pix2[1]));
         s    += abs(pix1[1]  - avg2(pix2[1],  pix2[2]));
         s    += abs(pix1[2]  - avg2(pix2[2],  pix2[3]));
         s    += abs(pix1[3]  - avg2(pix2[3],  pix2[4]));
         s    += abs(pix1[4]  - avg2(pix2[4],  pix2[5]));
         s    += abs(pix1[5]  - avg2(pix2[5],  pix2[6]));
         s    += abs(pix1[6]  - avg2(pix2[6],  pix2[7]));
         s    += abs(pix1[7]  - avg2(pix2[7],  pix2[8]));
         s    += abs(pix1[8]  - avg2(pix2[8],  pix2[9]));
         s    += abs(pix1[9]  - avg2(pix2[9],  pix2[10]));
         s    += abs(pix1[10] - avg2(pix2[10], pix2[11]));
         s    += abs(pix1[11] - avg2(pix2[11], pix2[12]));
         s    += abs(pix1[12] - avg2(pix2[12], pix2[13]));
         s    += abs(pix1[13] - avg2(pix2[13], pix2[14]));
         s    += abs(pix1[14] - avg2(pix2[14], pix2[15]));
         s    += abs(pix1[15] - avg2(pix2[15], pix2[16]));
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         pix1 += stride;
         pix2 += stride;
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     }
     return s;
 }
 
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 static int pix_abs16_y2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
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                           ptrdiff_t stride, int h)
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 {
635ec127
     int s = 0, i;
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     uint8_t *pix3 = pix2 + stride;
de6d9b64
 
bb12c2e9
     for (i = 0; i < h; i++) {
         s    += abs(pix1[0]  - avg2(pix2[0],  pix3[0]));
         s    += abs(pix1[1]  - avg2(pix2[1],  pix3[1]));
         s    += abs(pix1[2]  - avg2(pix2[2],  pix3[2]));
         s    += abs(pix1[3]  - avg2(pix2[3],  pix3[3]));
         s    += abs(pix1[4]  - avg2(pix2[4],  pix3[4]));
         s    += abs(pix1[5]  - avg2(pix2[5],  pix3[5]));
         s    += abs(pix1[6]  - avg2(pix2[6],  pix3[6]));
         s    += abs(pix1[7]  - avg2(pix2[7],  pix3[7]));
         s    += abs(pix1[8]  - avg2(pix2[8],  pix3[8]));
         s    += abs(pix1[9]  - avg2(pix2[9],  pix3[9]));
         s    += abs(pix1[10] - avg2(pix2[10], pix3[10]));
         s    += abs(pix1[11] - avg2(pix2[11], pix3[11]));
         s    += abs(pix1[12] - avg2(pix2[12], pix3[12]));
         s    += abs(pix1[13] - avg2(pix2[13], pix3[13]));
         s    += abs(pix1[14] - avg2(pix2[14], pix3[14]));
         s    += abs(pix1[15] - avg2(pix2[15], pix3[15]));
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         pix1 += stride;
         pix2 += stride;
         pix3 += stride;
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     }
     return s;
 }
 
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 static int pix_abs16_xy2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
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                            ptrdiff_t stride, int h)
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 {
635ec127
     int s = 0, i;
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     uint8_t *pix3 = pix2 + stride;
de6d9b64
 
bb12c2e9
     for (i = 0; i < h; i++) {
         s    += abs(pix1[0]  - avg4(pix2[0],  pix2[1],  pix3[0],  pix3[1]));
         s    += abs(pix1[1]  - avg4(pix2[1],  pix2[2],  pix3[1],  pix3[2]));
         s    += abs(pix1[2]  - avg4(pix2[2],  pix2[3],  pix3[2],  pix3[3]));
         s    += abs(pix1[3]  - avg4(pix2[3],  pix2[4],  pix3[3],  pix3[4]));
         s    += abs(pix1[4]  - avg4(pix2[4],  pix2[5],  pix3[4],  pix3[5]));
         s    += abs(pix1[5]  - avg4(pix2[5],  pix2[6],  pix3[5],  pix3[6]));
         s    += abs(pix1[6]  - avg4(pix2[6],  pix2[7],  pix3[6],  pix3[7]));
         s    += abs(pix1[7]  - avg4(pix2[7],  pix2[8],  pix3[7],  pix3[8]));
         s    += abs(pix1[8]  - avg4(pix2[8],  pix2[9],  pix3[8],  pix3[9]));
         s    += abs(pix1[9]  - avg4(pix2[9],  pix2[10], pix3[9],  pix3[10]));
         s    += abs(pix1[10] - avg4(pix2[10], pix2[11], pix3[10], pix3[11]));
         s    += abs(pix1[11] - avg4(pix2[11], pix2[12], pix3[11], pix3[12]));
         s    += abs(pix1[12] - avg4(pix2[12], pix2[13], pix3[12], pix3[13]));
         s    += abs(pix1[13] - avg4(pix2[13], pix2[14], pix3[13], pix3[14]));
         s    += abs(pix1[14] - avg4(pix2[14], pix2[15], pix3[14], pix3[15]));
         s    += abs(pix1[15] - avg4(pix2[15], pix2[16], pix3[15], pix3[16]));
9c12c6ff
         pix1 += stride;
         pix2 += stride;
         pix3 += stride;
de6d9b64
     }
     return s;
 }
 
82bb3048
 static inline int pix_abs8_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
9c12c6ff
                              ptrdiff_t stride, int h)
ba6802de
 {
635ec127
     int s = 0, i;
ba6802de
 
bb12c2e9
     for (i = 0; i < h; i++) {
         s    += abs(pix1[0] - pix2[0]);
         s    += abs(pix1[1] - pix2[1]);
         s    += abs(pix1[2] - pix2[2]);
         s    += abs(pix1[3] - pix2[3]);
         s    += abs(pix1[4] - pix2[4]);
         s    += abs(pix1[5] - pix2[5]);
         s    += abs(pix1[6] - pix2[6]);
         s    += abs(pix1[7] - pix2[7]);
9c12c6ff
         pix1 += stride;
         pix2 += stride;
ba6802de
     }
     return s;
 }
 
4edd74bd
 static inline int pix_median_abs8_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
                              ptrdiff_t stride, int h)
 {
     int s = 0, i, j;
 
 #define V(x) (pix1[x] - pix2[x])
 
     s    += abs(V(0));
     s    += abs(V(1) - V(0));
     s    += abs(V(2) - V(1));
     s    += abs(V(3) - V(2));
     s    += abs(V(4) - V(3));
     s    += abs(V(5) - V(4));
     s    += abs(V(6) - V(5));
     s    += abs(V(7) - V(6));
 
     pix1 += stride;
     pix2 += stride;
 
     for (i = 1; i < h; i++) {
         s    += abs(V(0) - V(-stride));
         for (j = 1; j < 8; j++)
             s    += abs(V(j) - mid_pred(V(j-stride), V(j-1), V(j-stride) + V(j-1) - V(j-stride-1)));
         pix1 += stride;
         pix2 += stride;
 
     }
 #undef V
     return s;
 }
 
82bb3048
 static int pix_abs8_x2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
9c12c6ff
                          ptrdiff_t stride, int h)
ba6802de
 {
635ec127
     int s = 0, i;
ba6802de
 
bb12c2e9
     for (i = 0; i < h; i++) {
         s    += abs(pix1[0] - avg2(pix2[0], pix2[1]));
         s    += abs(pix1[1] - avg2(pix2[1], pix2[2]));
         s    += abs(pix1[2] - avg2(pix2[2], pix2[3]));
         s    += abs(pix1[3] - avg2(pix2[3], pix2[4]));
         s    += abs(pix1[4] - avg2(pix2[4], pix2[5]));
         s    += abs(pix1[5] - avg2(pix2[5], pix2[6]));
         s    += abs(pix1[6] - avg2(pix2[6], pix2[7]));
         s    += abs(pix1[7] - avg2(pix2[7], pix2[8]));
9c12c6ff
         pix1 += stride;
         pix2 += stride;
ba6802de
     }
     return s;
 }
 
82bb3048
 static int pix_abs8_y2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
9c12c6ff
                          ptrdiff_t stride, int h)
ba6802de
 {
635ec127
     int s = 0, i;
9c12c6ff
     uint8_t *pix3 = pix2 + stride;
ba6802de
 
bb12c2e9
     for (i = 0; i < h; i++) {
         s    += abs(pix1[0] - avg2(pix2[0], pix3[0]));
         s    += abs(pix1[1] - avg2(pix2[1], pix3[1]));
         s    += abs(pix1[2] - avg2(pix2[2], pix3[2]));
         s    += abs(pix1[3] - avg2(pix2[3], pix3[3]));
         s    += abs(pix1[4] - avg2(pix2[4], pix3[4]));
         s    += abs(pix1[5] - avg2(pix2[5], pix3[5]));
         s    += abs(pix1[6] - avg2(pix2[6], pix3[6]));
         s    += abs(pix1[7] - avg2(pix2[7], pix3[7]));
9c12c6ff
         pix1 += stride;
         pix2 += stride;
         pix3 += stride;
ba6802de
     }
     return s;
 }
 
82bb3048
 static int pix_abs8_xy2_c(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
9c12c6ff
                           ptrdiff_t stride, int h)
ba6802de
 {
635ec127
     int s = 0, i;
9c12c6ff
     uint8_t *pix3 = pix2 + stride;
ba6802de
 
bb12c2e9
     for (i = 0; i < h; i++) {
         s    += abs(pix1[0] - avg4(pix2[0], pix2[1], pix3[0], pix3[1]));
         s    += abs(pix1[1] - avg4(pix2[1], pix2[2], pix3[1], pix3[2]));
         s    += abs(pix1[2] - avg4(pix2[2], pix2[3], pix3[2], pix3[3]));
         s    += abs(pix1[3] - avg4(pix2[3], pix2[4], pix3[3], pix3[4]));
         s    += abs(pix1[4] - avg4(pix2[4], pix2[5], pix3[4], pix3[5]));
         s    += abs(pix1[5] - avg4(pix2[5], pix2[6], pix3[5], pix3[6]));
         s    += abs(pix1[6] - avg4(pix2[6], pix2[7], pix3[6], pix3[7]));
         s    += abs(pix1[7] - avg4(pix2[7], pix2[8], pix3[7], pix3[8]));
9c12c6ff
         pix1 += stride;
         pix2 += stride;
         pix3 += stride;
ba6802de
     }
     return s;
 }
 
9c12c6ff
 static int nsse16_c(MpegEncContext *c, uint8_t *s1, uint8_t *s2,
                     ptrdiff_t stride, int h)
bb12c2e9
 {
635ec127
     int score1 = 0, score2 = 0, x, y;
bb12c2e9
 
     for (y = 0; y < h; y++) {
         for (x = 0; x < 16; x++)
             score1 += (s1[x] - s2[x]) * (s1[x] - s2[x]);
         if (y + 1 < h) {
             for (x = 0; x < 15; x++)
                 score2 += FFABS(s1[x]     - s1[x + stride] -
                                 s1[x + 1] + s1[x + stride + 1]) -
                           FFABS(s2[x]     - s2[x + stride] -
                                 s2[x + 1] + s2[x + stride + 1]);
e6a2ac34
         }
bb12c2e9
         s1 += stride;
         s2 += stride;
e6a2ac34
     }
d4c5d2ad
 
bb12c2e9
     if (c)
         return score1 + FFABS(score2) * c->avctx->nsse_weight;
     else
         return score1 + FFABS(score2) * 8;
e6a2ac34
 }
 
9c12c6ff
 static int nsse8_c(MpegEncContext *c, uint8_t *s1, uint8_t *s2,
                    ptrdiff_t stride, int h)
bb12c2e9
 {
635ec127
     int score1 = 0, score2 = 0, x, y;
bb12c2e9
 
     for (y = 0; y < h; y++) {
         for (x = 0; x < 8; x++)
             score1 += (s1[x] - s2[x]) * (s1[x] - s2[x]);
         if (y + 1 < h) {
             for (x = 0; x < 7; x++)
                 score2 += FFABS(s1[x]     - s1[x + stride] -
                                 s1[x + 1] + s1[x + stride + 1]) -
                           FFABS(s2[x]     - s2[x + stride] -
                                 s2[x + 1] + s2[x + stride + 1]);
e6a2ac34
         }
bb12c2e9
         s1 += stride;
         s2 += stride;
e6a2ac34
     }
115329f1
 
bb12c2e9
     if (c)
         return score1 + FFABS(score2) * c->avctx->nsse_weight;
     else
         return score1 + FFABS(score2) * 8;
e6a2ac34
 }
 
82bb3048
 static int zero_cmp(MpegEncContext *s, uint8_t *a, uint8_t *b,
9c12c6ff
                     ptrdiff_t stride, int h)
bb12c2e9
 {
622348f9
     return 0;
 }
 
2d604443
 void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type)
bb12c2e9
 {
622348f9
     int i;
115329f1
 
bb12c2e9
     memset(cmp, 0, sizeof(void *) * 6);
115329f1
 
bb12c2e9
     for (i = 0; i < 6; i++) {
         switch (type & 0xFF) {
622348f9
         case FF_CMP_SAD:
bb12c2e9
             cmp[i] = c->sad[i];
622348f9
             break;
4edd74bd
         case FF_CMP_MEDIAN_SAD:
             cmp[i] = c->median_sad[i];
             break;
622348f9
         case FF_CMP_SATD:
bb12c2e9
             cmp[i] = c->hadamard8_diff[i];
622348f9
             break;
         case FF_CMP_SSE:
bb12c2e9
             cmp[i] = c->sse[i];
622348f9
             break;
         case FF_CMP_DCT:
bb12c2e9
             cmp[i] = c->dct_sad[i];
622348f9
             break;
27c61ac5
         case FF_CMP_DCT264:
bb12c2e9
             cmp[i] = c->dct264_sad[i];
27c61ac5
             break;
0fd6aea1
         case FF_CMP_DCTMAX:
bb12c2e9
             cmp[i] = c->dct_max[i];
0fd6aea1
             break;
622348f9
         case FF_CMP_PSNR:
bb12c2e9
             cmp[i] = c->quant_psnr[i];
622348f9
             break;
         case FF_CMP_BIT:
bb12c2e9
             cmp[i] = c->bit[i];
622348f9
             break;
         case FF_CMP_RD:
bb12c2e9
             cmp[i] = c->rd[i];
622348f9
             break;
         case FF_CMP_VSAD:
bb12c2e9
             cmp[i] = c->vsad[i];
622348f9
             break;
         case FF_CMP_VSSE:
bb12c2e9
             cmp[i] = c->vsse[i];
622348f9
             break;
         case FF_CMP_ZERO:
bb12c2e9
             cmp[i] = zero_cmp;
622348f9
             break;
e6a2ac34
         case FF_CMP_NSSE:
bb12c2e9
             cmp[i] = c->nsse[i];
e6a2ac34
             break;
05aec7bb
 #if CONFIG_DWT
26efc54e
         case FF_CMP_W53:
             cmp[i]= c->w53[i];
             break;
         case FF_CMP_W97:
             cmp[i]= c->w97[i];
             break;
3a6fc8fa
 #endif
622348f9
         default:
bb12c2e9
             av_log(NULL, AV_LOG_ERROR,
                    "internal error in cmp function selection\n");
622348f9
         }
     }
 }
 
bb12c2e9
 #define BUTTERFLY2(o1, o2, i1, i2)              \
     o1 = (i1) + (i2);                           \
     o2 = (i1) - (i2);
1457ab52
 
bb12c2e9
 #define BUTTERFLY1(x, y)                        \
     {                                           \
         int a, b;                               \
         a = x;                                  \
         b = y;                                  \
         x = a + b;                              \
         y = a - b;                              \
     }
1457ab52
 
bb12c2e9
 #define BUTTERFLYA(x, y) (FFABS((x) + (y)) + FFABS((x) - (y)))
1457ab52
 
82bb3048
 static int hadamard8_diff8x8_c(MpegEncContext *s, uint8_t *dst,
9c12c6ff
                                uint8_t *src, ptrdiff_t stride, int h)
bb12c2e9
 {
635ec127
     int i, temp[64], sum = 0;
115329f1
 
dd7c2e9b
     av_assert2(h == 8);
115329f1
 
bb12c2e9
     for (i = 0; i < 8; i++) {
         // FIXME: try pointer walks
         BUTTERFLY2(temp[8 * i + 0], temp[8 * i + 1],
                    src[stride * i + 0] - dst[stride * i + 0],
                    src[stride * i + 1] - dst[stride * i + 1]);
         BUTTERFLY2(temp[8 * i + 2], temp[8 * i + 3],
                    src[stride * i + 2] - dst[stride * i + 2],
                    src[stride * i + 3] - dst[stride * i + 3]);
         BUTTERFLY2(temp[8 * i + 4], temp[8 * i + 5],
                    src[stride * i + 4] - dst[stride * i + 4],
                    src[stride * i + 5] - dst[stride * i + 5]);
         BUTTERFLY2(temp[8 * i + 6], temp[8 * i + 7],
                    src[stride * i + 6] - dst[stride * i + 6],
                    src[stride * i + 7] - dst[stride * i + 7]);
 
         BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 2]);
         BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 3]);
         BUTTERFLY1(temp[8 * i + 4], temp[8 * i + 6]);
         BUTTERFLY1(temp[8 * i + 5], temp[8 * i + 7]);
 
         BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 4]);
         BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 5]);
         BUTTERFLY1(temp[8 * i + 2], temp[8 * i + 6]);
         BUTTERFLY1(temp[8 * i + 3], temp[8 * i + 7]);
1457ab52
     }
 
bb12c2e9
     for (i = 0; i < 8; i++) {
         BUTTERFLY1(temp[8 * 0 + i], temp[8 * 1 + i]);
         BUTTERFLY1(temp[8 * 2 + i], temp[8 * 3 + i]);
         BUTTERFLY1(temp[8 * 4 + i], temp[8 * 5 + i]);
         BUTTERFLY1(temp[8 * 6 + i], temp[8 * 7 + i]);
115329f1
 
bb12c2e9
         BUTTERFLY1(temp[8 * 0 + i], temp[8 * 2 + i]);
         BUTTERFLY1(temp[8 * 1 + i], temp[8 * 3 + i]);
         BUTTERFLY1(temp[8 * 4 + i], temp[8 * 6 + i]);
         BUTTERFLY1(temp[8 * 5 + i], temp[8 * 7 + i]);
1457ab52
 
bb12c2e9
         sum += BUTTERFLYA(temp[8 * 0 + i], temp[8 * 4 + i]) +
                BUTTERFLYA(temp[8 * 1 + i], temp[8 * 5 + i]) +
                BUTTERFLYA(temp[8 * 2 + i], temp[8 * 6 + i]) +
                BUTTERFLYA(temp[8 * 3 + i], temp[8 * 7 + i]);
1457ab52
     }
     return sum;
 }
 
82bb3048
 static int hadamard8_intra8x8_c(MpegEncContext *s, uint8_t *src,
9c12c6ff
                                 uint8_t *dummy, ptrdiff_t stride, int h)
bb12c2e9
 {
635ec127
     int i, temp[64], sum = 0;
115329f1
 
dd7c2e9b
     av_assert2(h == 8);
115329f1
 
bb12c2e9
     for (i = 0; i < 8; i++) {
         // FIXME: try pointer walks
         BUTTERFLY2(temp[8 * i + 0], temp[8 * i + 1],
                    src[stride * i + 0], src[stride * i + 1]);
         BUTTERFLY2(temp[8 * i + 2], temp[8 * i + 3],
                    src[stride * i + 2], src[stride * i + 3]);
         BUTTERFLY2(temp[8 * i + 4], temp[8 * i + 5],
                    src[stride * i + 4], src[stride * i + 5]);
         BUTTERFLY2(temp[8 * i + 6], temp[8 * i + 7],
                    src[stride * i + 6], src[stride * i + 7]);
 
         BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 2]);
         BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 3]);
         BUTTERFLY1(temp[8 * i + 4], temp[8 * i + 6]);
         BUTTERFLY1(temp[8 * i + 5], temp[8 * i + 7]);
 
         BUTTERFLY1(temp[8 * i + 0], temp[8 * i + 4]);
         BUTTERFLY1(temp[8 * i + 1], temp[8 * i + 5]);
         BUTTERFLY1(temp[8 * i + 2], temp[8 * i + 6]);
         BUTTERFLY1(temp[8 * i + 3], temp[8 * i + 7]);
1457ab52
     }
 
bb12c2e9
     for (i = 0; i < 8; i++) {
         BUTTERFLY1(temp[8 * 0 + i], temp[8 * 1 + i]);
         BUTTERFLY1(temp[8 * 2 + i], temp[8 * 3 + i]);
         BUTTERFLY1(temp[8 * 4 + i], temp[8 * 5 + i]);
         BUTTERFLY1(temp[8 * 6 + i], temp[8 * 7 + i]);
115329f1
 
bb12c2e9
         BUTTERFLY1(temp[8 * 0 + i], temp[8 * 2 + i]);
         BUTTERFLY1(temp[8 * 1 + i], temp[8 * 3 + i]);
         BUTTERFLY1(temp[8 * 4 + i], temp[8 * 6 + i]);
         BUTTERFLY1(temp[8 * 5 + i], temp[8 * 7 + i]);
115329f1
 
         sum +=
bb12c2e9
             BUTTERFLYA(temp[8 * 0 + i], temp[8 * 4 + i])
             + BUTTERFLYA(temp[8 * 1 + i], temp[8 * 5 + i])
             + BUTTERFLYA(temp[8 * 2 + i], temp[8 * 6 + i])
             + BUTTERFLYA(temp[8 * 3 + i], temp[8 * 7 + i]);
1457ab52
     }
115329f1
 
bb12c2e9
     sum -= FFABS(temp[8 * 0] + temp[8 * 4]); // -mean
115329f1
 
1457ab52
     return sum;
 }
 
82bb3048
 static int dct_sad8x8_c(MpegEncContext *s, uint8_t *src1,
9c12c6ff
                         uint8_t *src2, ptrdiff_t stride, int h)
bb12c2e9
 {
88bd7fdc
     LOCAL_ALIGNED_16(int16_t, temp, [64]);
115329f1
 
dd7c2e9b
     av_assert2(h == 8);
1457ab52
 
bc488ec2
     s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
a9aee08d
     s->fdsp.fdct(temp);
2d604443
     return s->mecc.sum_abs_dctelem(temp);
1457ab52
 }
 
b250f9c6
 #if CONFIG_GPL
bb12c2e9
 #define DCT8_1D                                         \
     {                                                   \
         const int s07 = SRC(0) + SRC(7);                \
         const int s16 = SRC(1) + SRC(6);                \
         const int s25 = SRC(2) + SRC(5);                \
         const int s34 = SRC(3) + SRC(4);                \
         const int a0  = s07 + s34;                      \
         const int a1  = s16 + s25;                      \
         const int a2  = s07 - s34;                      \
         const int a3  = s16 - s25;                      \
         const int d07 = SRC(0) - SRC(7);                \
         const int d16 = SRC(1) - SRC(6);                \
         const int d25 = SRC(2) - SRC(5);                \
         const int d34 = SRC(3) - SRC(4);                \
         const int a4  = d16 + d25 + (d07 + (d07 >> 1)); \
         const int a5  = d07 - d34 - (d25 + (d25 >> 1)); \
         const int a6  = d07 + d34 - (d16 + (d16 >> 1)); \
         const int a7  = d16 - d25 + (d34 + (d34 >> 1)); \
         DST(0, a0 + a1);                                \
         DST(1, a4 + (a7 >> 2));                         \
         DST(2, a2 + (a3 >> 1));                         \
         DST(3, a5 + (a6 >> 2));                         \
         DST(4, a0 - a1);                                \
         DST(5, a6 - (a5 >> 2));                         \
         DST(6, (a2 >> 1) - a3);                         \
         DST(7, (a4 >> 2) - a7);                         \
     }
 
82bb3048
 static int dct264_sad8x8_c(MpegEncContext *s, uint8_t *src1,
9c12c6ff
                            uint8_t *src2, ptrdiff_t stride, int h)
bb12c2e9
 {
88bd7fdc
     int16_t dct[8][8];
635ec127
     int i, sum = 0;
27c61ac5
 
bc488ec2
     s->pdsp.diff_pixels_unaligned(dct[0], src1, src2, stride);
27c61ac5
 
 #define SRC(x) dct[i][x]
bb12c2e9
 #define DST(x, v) dct[i][x] = v
     for (i = 0; i < 8; i++)
27c61ac5
         DCT8_1D
 #undef SRC
 #undef DST
 
 #define SRC(x) dct[x][i]
bb12c2e9
 #define DST(x, v) sum += FFABS(v)
         for (i = 0; i < 8; i++)
             DCT8_1D
27c61ac5
 #undef SRC
 #undef DST
bb12c2e9
             return sum;
27c61ac5
 }
 #endif
 
82bb3048
 static int dct_max8x8_c(MpegEncContext *s, uint8_t *src1,
9c12c6ff
                         uint8_t *src2, ptrdiff_t stride, int h)
bb12c2e9
 {
88bd7fdc
     LOCAL_ALIGNED_16(int16_t, temp, [64]);
bb12c2e9
     int sum = 0, i;
115329f1
 
dd7c2e9b
     av_assert2(h == 8);
0fd6aea1
 
bc488ec2
     s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
a9aee08d
     s->fdsp.fdct(temp);
0fd6aea1
 
bb12c2e9
     for (i = 0; i < 64; i++)
         sum = FFMAX(sum, FFABS(temp[i]));
115329f1
 
0fd6aea1
     return sum;
 }
 
82bb3048
 static int quant_psnr8x8_c(MpegEncContext *s, uint8_t *src1,
9c12c6ff
                            uint8_t *src2, ptrdiff_t stride, int h)
bb12c2e9
 {
     LOCAL_ALIGNED_16(int16_t, temp, [64 * 2]);
     int16_t *const bak = temp + 64;
     int sum = 0, i;
1457ab52
 
dd7c2e9b
     av_assert2(h == 8);
bb12c2e9
     s->mb_intra = 0;
115329f1
 
bc488ec2
     s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
115329f1
 
bb12c2e9
     memcpy(bak, temp, 64 * sizeof(int16_t));
115329f1
 
bb12c2e9
     s->block_last_index[0 /* FIXME */] =
         s->fast_dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
d50635cd
     s->dct_unquantize_inter(s, temp, 0, s->qscale);
bb12c2e9
     ff_simple_idct_8(temp); // FIXME
115329f1
 
bb12c2e9
     for (i = 0; i < 64; i++)
         sum += (temp[i] - bak[i]) * (temp[i] - bak[i]);
115329f1
 
1457ab52
     return sum;
 }
 
82bb3048
 static int rd8x8_c(MpegEncContext *s, uint8_t *src1, uint8_t *src2,
9c12c6ff
                    ptrdiff_t stride, int h)
bb12c2e9
 {
     const uint8_t *scantable = s->intra_scantable.permutated;
88bd7fdc
     LOCAL_ALIGNED_16(int16_t, temp, [64]);
40d11227
     LOCAL_ALIGNED_16(uint8_t, lsrc1, [64]);
     LOCAL_ALIGNED_16(uint8_t, lsrc2, [64]);
e6dba5df
     int i, last, run, bits, level, distortion, start_i;
bb12c2e9
     const int esc_length = s->ac_esc_length;
635ec127
     uint8_t *length, *last_length;
115329f1
 
dd7c2e9b
     av_assert2(h == 8);
bb198e19
 
90d43b52
     copy_block8(lsrc1, src1, 8, stride, 8);
     copy_block8(lsrc2, src2, 8, stride, 8);
3a87ac94
 
f46bb608
     s->pdsp.diff_pixels(temp, lsrc1, lsrc2, 8);
67725183
 
bb12c2e9
     s->block_last_index[0 /* FIXME */] =
     last                               =
         s->fast_dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
67725183
 
bb12c2e9
     bits = 0;
115329f1
 
3a87ac94
     if (s->mb_intra) {
bb12c2e9
         start_i     = 1;
         length      = s->intra_ac_vlc_length;
         last_length = s->intra_ac_vlc_last_length;
         bits       += s->luma_dc_vlc_length[temp[0] + 256]; // FIXME: chroma
3a87ac94
     } else {
bb12c2e9
         start_i     = 0;
         length      = s->inter_ac_vlc_length;
         last_length = s->inter_ac_vlc_last_length;
     }
 
     if (last >= start_i) {
         run = 0;
         for (i = start_i; i < last; i++) {
             int j = scantable[i];
             level = temp[j];
 
             if (level) {
                 level += 64;
                 if ((level & (~127)) == 0)
                     bits += length[UNI_AC_ENC_INDEX(run, level)];
                 else
                     bits += esc_length;
                 run = 0;
             } else
3a87ac94
                 run++;
         }
bb12c2e9
         i = scantable[last];
115329f1
 
bb12c2e9
         level = temp[i] + 64;
1d0eab1d
 
72c2d8a3
         av_assert2(level - 64);
115329f1
 
bb12c2e9
         if ((level & (~127)) == 0) {
             bits += last_length[UNI_AC_ENC_INDEX(run, level)];
         } else
             bits += esc_length;
67725183
     }
 
bb12c2e9
     if (last >= 0) {
         if (s->mb_intra)
d50635cd
             s->dct_unquantize_intra(s, temp, 0, s->qscale);
         else
             s->dct_unquantize_inter(s, temp, 0, s->qscale);
3a87ac94
     }
115329f1
 
e3fcb143
     s->idsp.idct_add(lsrc2, 8, temp);
115329f1
 
2d604443
     distortion = s->mecc.sse[1](NULL, lsrc2, lsrc1, 8, 8);
3a87ac94
 
bb12c2e9
     return distortion + ((bits * s->qscale * s->qscale * 109 + 64) >> 7);
3a87ac94
 }
 
82bb3048
 static int bit8x8_c(MpegEncContext *s, uint8_t *src1, uint8_t *src2,
9c12c6ff
                     ptrdiff_t stride, int h)
bb12c2e9
 {
     const uint8_t *scantable = s->intra_scantable.permutated;
88bd7fdc
     LOCAL_ALIGNED_16(int16_t, temp, [64]);
3a87ac94
     int i, last, run, bits, level, start_i;
bb12c2e9
     const int esc_length = s->ac_esc_length;
635ec127
     uint8_t *length, *last_length;
bb198e19
 
dd7c2e9b
     av_assert2(h == 8);
115329f1
 
bc488ec2
     s->pdsp.diff_pixels_unaligned(temp, src1, src2, stride);
3a87ac94
 
bb12c2e9
     s->block_last_index[0 /* FIXME */] =
     last                               =
         s->fast_dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
67725183
 
bb12c2e9
     bits = 0;
115329f1
 
3a87ac94
     if (s->mb_intra) {
bb12c2e9
         start_i     = 1;
         length      = s->intra_ac_vlc_length;
         last_length = s->intra_ac_vlc_last_length;
         bits       += s->luma_dc_vlc_length[temp[0] + 256]; // FIXME: chroma
3a87ac94
     } else {
bb12c2e9
         start_i     = 0;
         length      = s->inter_ac_vlc_length;
         last_length = s->inter_ac_vlc_last_length;
     }
 
     if (last >= start_i) {
         run = 0;
         for (i = start_i; i < last; i++) {
             int j = scantable[i];
             level = temp[j];
 
             if (level) {
                 level += 64;
                 if ((level & (~127)) == 0)
                     bits += length[UNI_AC_ENC_INDEX(run, level)];
                 else
                     bits += esc_length;
                 run = 0;
             } else
3a87ac94
                 run++;
         }
bb12c2e9
         i = scantable[last];
115329f1
 
bb12c2e9
         level = temp[i] + 64;
115329f1
 
72c2d8a3
         av_assert2(level - 64);
115329f1
 
bb12c2e9
         if ((level & (~127)) == 0)
             bits += last_length[UNI_AC_ENC_INDEX(run, level)];
         else
             bits += esc_length;
3a87ac94
     }
 
     return bits;
 }
 
bb12c2e9
 #define VSAD_INTRA(size)                                                \
82bb3048
 static int vsad_intra ## size ## _c(MpegEncContext *c,                  \
bb12c2e9
                                     uint8_t *s, uint8_t *dummy,         \
9c12c6ff
                                     ptrdiff_t stride, int h)            \
bb12c2e9
 {                                                                       \
635ec127
     int score = 0, x, y;                                                \
bb12c2e9
                                                                         \
     for (y = 1; y < h; y++) {                                           \
         for (x = 0; x < size; x += 4) {                                 \
             score += FFABS(s[x]     - s[x + stride])     +              \
                      FFABS(s[x + 1] - s[x + stride + 1]) +              \
                      FFABS(s[x + 2] - s[x + 2 + stride]) +              \
                      FFABS(s[x + 3] - s[x + 3 + stride]);               \
         }                                                               \
         s += stride;                                                    \
     }                                                                   \
                                                                         \
     return score;                                                       \
7fb7f636
 }
 VSAD_INTRA(8)
 VSAD_INTRA(16)
622348f9
 
ac1077ab
 #define VSAD(size)                                                             \
 static int vsad ## size ## _c(MpegEncContext *c,                               \
                               uint8_t *s1, uint8_t *s2,                        \
ea41e6d6
                               ptrdiff_t stride, int h)                               \
ac1077ab
 {                                                                              \
     int score = 0, x, y;                                                       \
                                                                                \
     for (y = 1; y < h; y++) {                                                  \
         for (x = 0; x < size; x++)                                             \
             score += FFABS(s1[x] - s2[x] - s1[x + stride] + s2[x + stride]);   \
         s1 += stride;                                                          \
         s2 += stride;                                                          \
     }                                                                          \
                                                                                \
     return score;                                                              \
 }
 VSAD(8)
 VSAD(16)
622348f9
 
bb12c2e9
 #define SQ(a) ((a) * (a))
 #define VSSE_INTRA(size)                                                \
82bb3048
 static int vsse_intra ## size ## _c(MpegEncContext *c,                  \
bb12c2e9
                                     uint8_t *s, uint8_t *dummy,         \
9c12c6ff
                                     ptrdiff_t stride, int h)            \
bb12c2e9
 {                                                                       \
635ec127
     int score = 0, x, y;                                                \
bb12c2e9
                                                                         \
     for (y = 1; y < h; y++) {                                           \
         for (x = 0; x < size; x += 4) {                                 \
             score += SQ(s[x]     - s[x + stride]) +                     \
                      SQ(s[x + 1] - s[x + stride + 1]) +                 \
                      SQ(s[x + 2] - s[x + stride + 2]) +                 \
                      SQ(s[x + 3] - s[x + stride + 3]);                  \
         }                                                               \
         s += stride;                                                    \
     }                                                                   \
                                                                         \
     return score;                                                       \
7fb7f636
 }
 VSSE_INTRA(8)
 VSSE_INTRA(16)
622348f9
 
ac1077ab
 #define VSSE(size)                                                             \
 static int vsse ## size ## _c(MpegEncContext *c, uint8_t *s1, uint8_t *s2,     \
ea41e6d6
                               ptrdiff_t stride, int h)                         \
ac1077ab
 {                                                                              \
     int score = 0, x, y;                                                       \
                                                                                \
     for (y = 1; y < h; y++) {                                                  \
         for (x = 0; x < size; x++)                                             \
             score += SQ(s1[x] - s2[x] - s1[x + stride] + s2[x + stride]);      \
         s1 += stride;                                                          \
         s2 += stride;                                                          \
     }                                                                          \
                                                                                \
     return score;                                                              \
 }
 VSSE(8)
 VSSE(16)
622348f9
 
bb12c2e9
 #define WRAPPER8_16_SQ(name8, name16)                                   \
82bb3048
 static int name16(MpegEncContext *s, uint8_t *dst, uint8_t *src,        \
9c12c6ff
                   ptrdiff_t stride, int h)                              \
bb12c2e9
 {                                                                       \
     int score = 0;                                                      \
                                                                         \
     score += name8(s, dst, src, stride, 8);                             \
     score += name8(s, dst + 8, src + 8, stride, 8);                     \
     if (h == 16) {                                                      \
         dst   += 8 * stride;                                            \
         src   += 8 * stride;                                            \
         score += name8(s, dst, src, stride, 8);                         \
         score += name8(s, dst + 8, src + 8, stride, 8);                 \
     }                                                                   \
     return score;                                                       \
059866eb
 }
 
9fbd14ac
 WRAPPER8_16_SQ(hadamard8_diff8x8_c, hadamard8_diff16_c)
 WRAPPER8_16_SQ(hadamard8_intra8x8_c, hadamard8_intra16_c)
 WRAPPER8_16_SQ(dct_sad8x8_c, dct_sad16_c)
b250f9c6
 #if CONFIG_GPL
9fbd14ac
 WRAPPER8_16_SQ(dct264_sad8x8_c, dct264_sad16_c)
60900991
 #endif
9fbd14ac
 WRAPPER8_16_SQ(dct_max8x8_c, dct_max16_c)
 WRAPPER8_16_SQ(quant_psnr8x8_c, quant_psnr16_c)
 WRAPPER8_16_SQ(rd8x8_c, rd16_c)
 WRAPPER8_16_SQ(bit8x8_c, bit16_c)
1457ab52
 
2d604443
 av_cold void ff_me_cmp_init_static(void)
e0eac44e
 {
d2975f8d
     int i;
e0eac44e
 
bb12c2e9
     for (i = 0; i < 512; i++)
05563cca
         ff_square_tab[i] = (i - 256) * (i - 256);
59cf08ce
 }
92ddb692
 
dd7c2e9b
 int ff_check_alignment(void)
 {
     static int did_fail = 0;
29b42c66
     LOCAL_ALIGNED_16(int, aligned, [4]);
6dc7d5da
 
dd7c2e9b
     if ((intptr_t)aligned & 15) {
         if (!did_fail) {
b250f9c6
 #if HAVE_MMX || HAVE_ALTIVEC
6dc7d5da
             av_log(NULL, AV_LOG_ERROR,
c1173617
                 "Compiler did not align stack variables. Libavcodec has been miscompiled\n"
                 "and may be very slow or crash. This is not a bug in libavcodec,\n"
5e4c7ca2
                 "but in the compiler. You may try recompiling using gcc >= 4.2.\n"
2d2b5a14
                 "Do not report crashes to FFmpeg developers.\n");
6dc7d5da
 #endif
             did_fail=1;
         }
         return -1;
     }
     return 0;
 }
92ddb692
 
2d604443
 av_cold void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx)
59cf08ce
 {
6dc7d5da
     ff_check_alignment();
 
1edbfe19
     c->sum_abs_dctelem = sum_abs_dctelem_c;
bb12c2e9
 
45553457
     /* TODO [0] 16  [1] 8 */
bb198e19
     c->pix_abs[0][0] = pix_abs16_c;
     c->pix_abs[0][1] = pix_abs16_x2_c;
     c->pix_abs[0][2] = pix_abs16_y2_c;
     c->pix_abs[0][3] = pix_abs16_xy2_c;
     c->pix_abs[1][0] = pix_abs8_c;
     c->pix_abs[1][1] = pix_abs8_x2_c;
     c->pix_abs[1][2] = pix_abs8_y2_c;
     c->pix_abs[1][3] = pix_abs8_xy2_c;
eb4b3dd3
 
bb12c2e9
 #define SET_CMP_FUNC(name)                      \
     c->name[0] = name ## 16_c;                  \
     c->name[1] = name ## 8x8_c;
115329f1
 
bb198e19
     SET_CMP_FUNC(hadamard8_diff)
bb12c2e9
     c->hadamard8_diff[4] = hadamard8_intra16_c;
     c->hadamard8_diff[5] = hadamard8_intra8x8_c;
bb198e19
     SET_CMP_FUNC(dct_sad)
0fd6aea1
     SET_CMP_FUNC(dct_max)
b250f9c6
 #if CONFIG_GPL
27c61ac5
     SET_CMP_FUNC(dct264_sad)
60900991
 #endif
bb12c2e9
     c->sad[0] = pix_abs16_c;
     c->sad[1] = pix_abs8_c;
     c->sse[0] = sse16_c;
     c->sse[1] = sse8_c;
     c->sse[2] = sse4_c;
bb198e19
     SET_CMP_FUNC(quant_psnr)
     SET_CMP_FUNC(rd)
     SET_CMP_FUNC(bit)
bb12c2e9
     c->vsad[0] = vsad16_c;
ac1077ab
     c->vsad[1] = vsad8_c;
bb12c2e9
     c->vsad[4] = vsad_intra16_c;
     c->vsad[5] = vsad_intra8_c;
     c->vsse[0] = vsse16_c;
ac1077ab
     c->vsse[1] = vsse8_c;
bb12c2e9
     c->vsse[4] = vsse_intra16_c;
     c->vsse[5] = vsse_intra8_c;
     c->nsse[0] = nsse16_c;
     c->nsse[1] = nsse8_c;
aeef76b3
 #if CONFIG_SNOW_DECODER || CONFIG_SNOW_ENCODER
05aec7bb
     ff_dsputil_init_dwt(c);
3a6fc8fa
 #endif
26efc54e
 
67e6a9f5
     if (ARCH_ALPHA)
3a2d1465
         ff_me_cmp_init_alpha(c, avctx);
67e6a9f5
     if (ARCH_ARM)
2d604443
         ff_me_cmp_init_arm(c, avctx);
67e6a9f5
     if (ARCH_PPC)
2d604443
         ff_me_cmp_init_ppc(c, avctx);
67e6a9f5
     if (ARCH_X86)
2d604443
         ff_me_cmp_init_x86(c, avctx);
709bb45c
     if (ARCH_MIPS)
         ff_me_cmp_init_mips(c, avctx);
4edd74bd
 
     c->median_sad[0] = pix_median_abs16_c;
     c->median_sad[1] = pix_median_abs8_c;
1e3104cd
 }