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FFmpeg/libavcodec/h264pred_template.c

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  1. /*

  2.  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder

  3.  * Copyright (c) 2003-2011 Michael Niedermayer <michaelni@gmx.at>

  4.  *

  5.  * This file is part of Libav.

  6.  *

  7.  * Libav is free software; you can redistribute it and/or

  8.  * modify it under the terms of the GNU Lesser General Public

  9.  * License as published by the Free Software Foundation; either

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

  11.  *

  12.  * Libav is distributed in the hope that it will be useful,

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

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

  15.  * Lesser General Public License for more details.

  16.  *

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

  18.  * License along with Libav; if not, write to the Free Software

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

  20.  */

  21. 

  22. /**

  23.  * @file

  24.  * H.264 / AVC / MPEG4 part10 prediction functions.

  25.  * @author Michael Niedermayer <michaelni@gmx.at>

  26.  */

  27. 

  28. #include "mathops.h"

  29. #include "high_bit_depth.h"

  30. 

  31. static void FUNCC(pred4x4_vertical)(uint8_t *_src, const uint8_t *topright, int _stride){

  32.     pixel *src = (pixel*)_src;

  33.     int stride = _stride/sizeof(pixel);

  34.     const pixel4 a= ((pixel4*)(src-stride))[0];

  35.     ((pixel4*)(src+0*stride))[0]= a;

  36.     ((pixel4*)(src+1*stride))[0]= a;

  37.     ((pixel4*)(src+2*stride))[0]= a;

  38.     ((pixel4*)(src+3*stride))[0]= a;

  39. }

  40. 

  41. static void FUNCC(pred4x4_horizontal)(uint8_t *_src, const uint8_t *topright, int _stride){

  42.     pixel *src = (pixel*)_src;

  43.     int stride = _stride/sizeof(pixel);

  44.     ((pixel4*)(src+0*stride))[0]= PIXEL_SPLAT_X4(src[-1+0*stride]);

  45.     ((pixel4*)(src+1*stride))[0]= PIXEL_SPLAT_X4(src[-1+1*stride]);

  46.     ((pixel4*)(src+2*stride))[0]= PIXEL_SPLAT_X4(src[-1+2*stride]);

  47.     ((pixel4*)(src+3*stride))[0]= PIXEL_SPLAT_X4(src[-1+3*stride]);

  48. }

  49. 

  50. static void FUNCC(pred4x4_dc)(uint8_t *_src, const uint8_t *topright, int _stride){

  51.     pixel *src = (pixel*)_src;

  52.     int stride = _stride/sizeof(pixel);

  53.     const int dc= (  src[-stride] + src[1-stride] + src[2-stride] + src[3-stride]

  54.                    + src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 4) >>3;

  55. 

  56.     ((pixel4*)(src+0*stride))[0]=

  57.     ((pixel4*)(src+1*stride))[0]=

  58.     ((pixel4*)(src+2*stride))[0]=

  59.     ((pixel4*)(src+3*stride))[0]= PIXEL_SPLAT_X4(dc);

  60. }

  61. 

  62. static void FUNCC(pred4x4_left_dc)(uint8_t *_src, const uint8_t *topright, int _stride){

  63.     pixel *src = (pixel*)_src;

  64.     int stride = _stride/sizeof(pixel);

  65.     const int dc= (  src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 2) >>2;

  66. 

  67.     ((pixel4*)(src+0*stride))[0]=

  68.     ((pixel4*)(src+1*stride))[0]=

  69.     ((pixel4*)(src+2*stride))[0]=

  70.     ((pixel4*)(src+3*stride))[0]= PIXEL_SPLAT_X4(dc);

  71. }

  72. 

  73. static void FUNCC(pred4x4_top_dc)(uint8_t *_src, const uint8_t *topright, int _stride){

  74.     pixel *src = (pixel*)_src;

  75.     int stride = _stride/sizeof(pixel);

  76.     const int dc= (  src[-stride] + src[1-stride] + src[2-stride] + src[3-stride] + 2) >>2;

  77. 

  78.     ((pixel4*)(src+0*stride))[0]=

  79.     ((pixel4*)(src+1*stride))[0]=

  80.     ((pixel4*)(src+2*stride))[0]=

  81.     ((pixel4*)(src+3*stride))[0]= PIXEL_SPLAT_X4(dc);

  82. }

  83. 

  84. static void FUNCC(pred4x4_128_dc)(uint8_t *_src, const uint8_t *topright, int _stride){

  85.     pixel *src = (pixel*)_src;

  86.     int stride = _stride/sizeof(pixel);

  87.     ((pixel4*)(src+0*stride))[0]=

  88.     ((pixel4*)(src+1*stride))[0]=

  89.     ((pixel4*)(src+2*stride))[0]=

  90.     ((pixel4*)(src+3*stride))[0]= PIXEL_SPLAT_X4(1<<(BIT_DEPTH-1));

  91. }

  92. 

  93. static void FUNCC(pred4x4_127_dc)(uint8_t *_src, const uint8_t *topright, int _stride){

  94.     pixel *src = (pixel*)_src;

  95.     int stride = _stride/sizeof(pixel);

  96.     ((pixel4*)(src+0*stride))[0]=

  97.     ((pixel4*)(src+1*stride))[0]=

  98.     ((pixel4*)(src+2*stride))[0]=

  99.     ((pixel4*)(src+3*stride))[0]= PIXEL_SPLAT_X4((1<<(BIT_DEPTH-1))-1);

  100. }

  101. 

  102. static void FUNCC(pred4x4_129_dc)(uint8_t *_src, const uint8_t *topright, int _stride){

  103.     pixel *src = (pixel*)_src;

  104.     int stride = _stride/sizeof(pixel);

  105.     ((pixel4*)(src+0*stride))[0]=

  106.     ((pixel4*)(src+1*stride))[0]=

  107.     ((pixel4*)(src+2*stride))[0]=

  108.     ((pixel4*)(src+3*stride))[0]= PIXEL_SPLAT_X4((1<<(BIT_DEPTH-1))+1);

  109. }

  110. 

  111. 

  112. #define LOAD_TOP_RIGHT_EDGE\

  113.     const int av_unused t4= topright[0];\

  114.     const int av_unused t5= topright[1];\

  115.     const int av_unused t6= topright[2];\

  116.     const int av_unused t7= topright[3];\

  117. 

  118. #define LOAD_DOWN_LEFT_EDGE\

  119.     const int av_unused l4= src[-1+4*stride];\

  120.     const int av_unused l5= src[-1+5*stride];\

  121.     const int av_unused l6= src[-1+6*stride];\

  122.     const int av_unused l7= src[-1+7*stride];\

  123. 

  124. #define LOAD_LEFT_EDGE\

  125.     const int av_unused l0= src[-1+0*stride];\

  126.     const int av_unused l1= src[-1+1*stride];\

  127.     const int av_unused l2= src[-1+2*stride];\

  128.     const int av_unused l3= src[-1+3*stride];\

  129. 

  130. #define LOAD_TOP_EDGE\

  131.     const int av_unused t0= src[ 0-1*stride];\

  132.     const int av_unused t1= src[ 1-1*stride];\

  133.     const int av_unused t2= src[ 2-1*stride];\

  134.     const int av_unused t3= src[ 3-1*stride];\

  135. 

  136. static void FUNCC(pred4x4_down_right)(uint8_t *_src, const uint8_t *topright, int _stride){

  137.     pixel *src = (pixel*)_src;

  138.     int stride = _stride/sizeof(pixel);

  139.     const int lt= src[-1-1*stride];

  140.     LOAD_TOP_EDGE

  141.     LOAD_LEFT_EDGE

  142. 

  143.     src[0+3*stride]=(l3 + 2*l2 + l1 + 2)>>2;

  144.     src[0+2*stride]=

  145.     src[1+3*stride]=(l2 + 2*l1 + l0 + 2)>>2;

  146.     src[0+1*stride]=

  147.     src[1+2*stride]=

  148.     src[2+3*stride]=(l1 + 2*l0 + lt + 2)>>2;

  149.     src[0+0*stride]=

  150.     src[1+1*stride]=

  151.     src[2+2*stride]=

  152.     src[3+3*stride]=(l0 + 2*lt + t0 + 2)>>2;

  153.     src[1+0*stride]=

  154.     src[2+1*stride]=

  155.     src[3+2*stride]=(lt + 2*t0 + t1 + 2)>>2;

  156.     src[2+0*stride]=

  157.     src[3+1*stride]=(t0 + 2*t1 + t2 + 2)>>2;

  158.     src[3+0*stride]=(t1 + 2*t2 + t3 + 2)>>2;

  159. }

  160. 

  161. static void FUNCC(pred4x4_down_left)(uint8_t *_src, const uint8_t *_topright, int _stride){

  162.     pixel *src = (pixel*)_src;

  163.     const pixel *topright = (const pixel*)_topright;

  164.     int stride = _stride/sizeof(pixel);

  165.     LOAD_TOP_EDGE

  166.     LOAD_TOP_RIGHT_EDGE

  167. //    LOAD_LEFT_EDGE

  168. 

  169.     src[0+0*stride]=(t0 + t2 + 2*t1 + 2)>>2;

  170.     src[1+0*stride]=

  171.     src[0+1*stride]=(t1 + t3 + 2*t2 + 2)>>2;

  172.     src[2+0*stride]=

  173.     src[1+1*stride]=

  174.     src[0+2*stride]=(t2 + t4 + 2*t3 + 2)>>2;

  175.     src[3+0*stride]=

  176.     src[2+1*stride]=

  177.     src[1+2*stride]=

  178.     src[0+3*stride]=(t3 + t5 + 2*t4 + 2)>>2;

  179.     src[3+1*stride]=

  180.     src[2+2*stride]=

  181.     src[1+3*stride]=(t4 + t6 + 2*t5 + 2)>>2;

  182.     src[3+2*stride]=

  183.     src[2+3*stride]=(t5 + t7 + 2*t6 + 2)>>2;

  184.     src[3+3*stride]=(t6 + 3*t7 + 2)>>2;

  185. }

  186. 

  187. static void FUNCC(pred4x4_vertical_right)(uint8_t *_src, const uint8_t *topright, int _stride){

  188.     pixel *src = (pixel*)_src;

  189.     int stride = _stride/sizeof(pixel);

  190.     const int lt= src[-1-1*stride];

  191.     LOAD_TOP_EDGE

  192.     LOAD_LEFT_EDGE

  193. 

  194.     src[0+0*stride]=

  195.     src[1+2*stride]=(lt + t0 + 1)>>1;

  196.     src[1+0*stride]=

  197.     src[2+2*stride]=(t0 + t1 + 1)>>1;

  198.     src[2+0*stride]=

  199.     src[3+2*stride]=(t1 + t2 + 1)>>1;

  200.     src[3+0*stride]=(t2 + t3 + 1)>>1;

  201.     src[0+1*stride]=

  202.     src[1+3*stride]=(l0 + 2*lt + t0 + 2)>>2;

  203.     src[1+1*stride]=

  204.     src[2+3*stride]=(lt + 2*t0 + t1 + 2)>>2;

  205.     src[2+1*stride]=

  206.     src[3+3*stride]=(t0 + 2*t1 + t2 + 2)>>2;

  207.     src[3+1*stride]=(t1 + 2*t2 + t3 + 2)>>2;

  208.     src[0+2*stride]=(lt + 2*l0 + l1 + 2)>>2;

  209.     src[0+3*stride]=(l0 + 2*l1 + l2 + 2)>>2;

  210. }

  211. 

  212. static void FUNCC(pred4x4_vertical_left)(uint8_t *_src, const uint8_t *_topright, int _stride){

  213.     pixel *src = (pixel*)_src;

  214.     const pixel *topright = (const pixel*)_topright;

  215.     int stride = _stride/sizeof(pixel);

  216.     LOAD_TOP_EDGE

  217.     LOAD_TOP_RIGHT_EDGE

  218. 

  219.     src[0+0*stride]=(t0 + t1 + 1)>>1;

  220.     src[1+0*stride]=

  221.     src[0+2*stride]=(t1 + t2 + 1)>>1;

  222.     src[2+0*stride]=

  223.     src[1+2*stride]=(t2 + t3 + 1)>>1;

  224.     src[3+0*stride]=

  225.     src[2+2*stride]=(t3 + t4+ 1)>>1;

  226.     src[3+2*stride]=(t4 + t5+ 1)>>1;

  227.     src[0+1*stride]=(t0 + 2*t1 + t2 + 2)>>2;

  228.     src[1+1*stride]=

  229.     src[0+3*stride]=(t1 + 2*t2 + t3 + 2)>>2;

  230.     src[2+1*stride]=

  231.     src[1+3*stride]=(t2 + 2*t3 + t4 + 2)>>2;

  232.     src[3+1*stride]=

  233.     src[2+3*stride]=(t3 + 2*t4 + t5 + 2)>>2;

  234.     src[3+3*stride]=(t4 + 2*t5 + t6 + 2)>>2;

  235. }

  236. 

  237. static void FUNCC(pred4x4_horizontal_up)(uint8_t *_src, const uint8_t *topright, int _stride){

  238.     pixel *src = (pixel*)_src;

  239.     int stride = _stride/sizeof(pixel);

  240.     LOAD_LEFT_EDGE

  241. 

  242.     src[0+0*stride]=(l0 + l1 + 1)>>1;

  243.     src[1+0*stride]=(l0 + 2*l1 + l2 + 2)>>2;

  244.     src[2+0*stride]=

  245.     src[0+1*stride]=(l1 + l2 + 1)>>1;

  246.     src[3+0*stride]=

  247.     src[1+1*stride]=(l1 + 2*l2 + l3 + 2)>>2;

  248.     src[2+1*stride]=

  249.     src[0+2*stride]=(l2 + l3 + 1)>>1;

  250.     src[3+1*stride]=

  251.     src[1+2*stride]=(l2 + 2*l3 + l3 + 2)>>2;

  252.     src[3+2*stride]=

  253.     src[1+3*stride]=

  254.     src[0+3*stride]=

  255.     src[2+2*stride]=

  256.     src[2+3*stride]=

  257.     src[3+3*stride]=l3;

  258. }

  259. 

  260. static void FUNCC(pred4x4_horizontal_down)(uint8_t *_src, const uint8_t *topright, int _stride){

  261.     pixel *src = (pixel*)_src;

  262.     int stride = _stride/sizeof(pixel);

  263.     const int lt= src[-1-1*stride];

  264.     LOAD_TOP_EDGE

  265.     LOAD_LEFT_EDGE

  266. 

  267.     src[0+0*stride]=

  268.     src[2+1*stride]=(lt + l0 + 1)>>1;

  269.     src[1+0*stride]=

  270.     src[3+1*stride]=(l0 + 2*lt + t0 + 2)>>2;

  271.     src[2+0*stride]=(lt + 2*t0 + t1 + 2)>>2;

  272.     src[3+0*stride]=(t0 + 2*t1 + t2 + 2)>>2;

  273.     src[0+1*stride]=

  274.     src[2+2*stride]=(l0 + l1 + 1)>>1;

  275.     src[1+1*stride]=

  276.     src[3+2*stride]=(lt + 2*l0 + l1 + 2)>>2;

  277.     src[0+2*stride]=

  278.     src[2+3*stride]=(l1 + l2+ 1)>>1;

  279.     src[1+2*stride]=

  280.     src[3+3*stride]=(l0 + 2*l1 + l2 + 2)>>2;

  281.     src[0+3*stride]=(l2 + l3 + 1)>>1;

  282.     src[1+3*stride]=(l1 + 2*l2 + l3 + 2)>>2;

  283. }

  284. 

  285. static void FUNCC(pred16x16_vertical)(uint8_t *_src, int _stride){

  286.     int i;

  287.     pixel *src = (pixel*)_src;

  288.     int stride = _stride/sizeof(pixel);

  289.     const pixel4 a = ((pixel4*)(src-stride))[0];

  290.     const pixel4 b = ((pixel4*)(src-stride))[1];

  291.     const pixel4 c = ((pixel4*)(src-stride))[2];

  292.     const pixel4 d = ((pixel4*)(src-stride))[3];

  293. 

  294.     for(i=0; i<16; i++){

  295.         ((pixel4*)(src+i*stride))[0] = a;

  296.         ((pixel4*)(src+i*stride))[1] = b;

  297.         ((pixel4*)(src+i*stride))[2] = c;

  298.         ((pixel4*)(src+i*stride))[3] = d;

  299.     }

  300. }

  301. 

  302. static void FUNCC(pred16x16_horizontal)(uint8_t *_src, int stride){

  303.     int i;

  304.     pixel *src = (pixel*)_src;

  305.     stride /= sizeof(pixel);

  306. 

  307.     for(i=0; i<16; i++){

  308.         ((pixel4*)(src+i*stride))[0] =

  309.         ((pixel4*)(src+i*stride))[1] =

  310.         ((pixel4*)(src+i*stride))[2] =

  311.         ((pixel4*)(src+i*stride))[3] = PIXEL_SPLAT_X4(src[-1+i*stride]);

  312.     }

  313. }

  314. 

  315. #define PREDICT_16x16_DC(v)\

  316.     for(i=0; i<16; i++){\

  317.         AV_WN4P(src+ 0, v);\

  318.         AV_WN4P(src+ 4, v);\

  319.         AV_WN4P(src+ 8, v);\

  320.         AV_WN4P(src+12, v);\

  321.         src += stride;\

  322.     }

  323. 

  324. static void FUNCC(pred16x16_dc)(uint8_t *_src, int stride){

  325.     int i, dc=0;

  326.     pixel *src = (pixel*)_src;

  327.     pixel4 dcsplat;

  328.     stride /= sizeof(pixel);

  329. 

  330.     for(i=0;i<16; i++){

  331.         dc+= src[-1+i*stride];

  332.     }

  333. 

  334.     for(i=0;i<16; i++){

  335.         dc+= src[i-stride];

  336.     }

  337. 

  338.     dcsplat = PIXEL_SPLAT_X4((dc+16)>>5);

  339.     PREDICT_16x16_DC(dcsplat);

  340. }

  341. 

  342. static void FUNCC(pred16x16_left_dc)(uint8_t *_src, int stride){

  343.     int i, dc=0;

  344.     pixel *src = (pixel*)_src;

  345.     pixel4 dcsplat;

  346.     stride /= sizeof(pixel);

  347. 

  348.     for(i=0;i<16; i++){

  349.         dc+= src[-1+i*stride];

  350.     }

  351. 

  352.     dcsplat = PIXEL_SPLAT_X4((dc+8)>>4);

  353.     PREDICT_16x16_DC(dcsplat);

  354. }

  355. 

  356. static void FUNCC(pred16x16_top_dc)(uint8_t *_src, int stride){

  357.     int i, dc=0;

  358.     pixel *src = (pixel*)_src;

  359.     pixel4 dcsplat;

  360.     stride /= sizeof(pixel);

  361. 

  362.     for(i=0;i<16; i++){

  363.         dc+= src[i-stride];

  364.     }

  365. 

  366.     dcsplat = PIXEL_SPLAT_X4((dc+8)>>4);

  367.     PREDICT_16x16_DC(dcsplat);

  368. }

  369. 

  370. #define PRED16x16_X(n, v) \

  371. static void FUNCC(pred16x16_##n##_dc)(uint8_t *_src, int stride){\

  372.     int i;\

  373.     pixel *src = (pixel*)_src;\

  374.     stride /= sizeof(pixel);\

  375.     PREDICT_16x16_DC(PIXEL_SPLAT_X4(v));\

  376. }

  377. 

  378. PRED16x16_X(127, (1<<(BIT_DEPTH-1))-1);

  379. PRED16x16_X(128, (1<<(BIT_DEPTH-1))+0);

  380. PRED16x16_X(129, (1<<(BIT_DEPTH-1))+1);

  381. 

  382. static inline void FUNCC(pred16x16_plane_compat)(uint8_t *_src, int _stride, const int svq3, const int rv40){

  383.   int i, j, k;

  384.   int a;

  385.   INIT_CLIP

  386.   pixel *src = (pixel*)_src;

  387.   int stride = _stride/sizeof(pixel);

  388.   const pixel * const src0 = src +7-stride;

  389.   const pixel *       src1 = src +8*stride-1;

  390.   const pixel *       src2 = src1-2*stride;    // == src+6*stride-1;

  391.   int H = src0[1] - src0[-1];

  392.   int V = src1[0] - src2[ 0];

  393.   for(k=2; k<=8; ++k) {

  394.     src1 += stride; src2 -= stride;

  395.     H += k*(src0[k] - src0[-k]);

  396.     V += k*(src1[0] - src2[ 0]);

  397.   }

  398.   if(svq3){

  399.     H = ( 5*(H/4) ) / 16;

  400.     V = ( 5*(V/4) ) / 16;

  401. 

  402.     /* required for 100% accuracy */

  403.     i = H; H = V; V = i;

  404.   }else if(rv40){

  405.     H = ( H + (H>>2) ) >> 4;

  406.     V = ( V + (V>>2) ) >> 4;

  407.   }else{

  408.     H = ( 5*H+32 ) >> 6;

  409.     V = ( 5*V+32 ) >> 6;

  410.   }

  411. 

  412.   a = 16*(src1[0] + src2[16] + 1) - 7*(V+H);

  413.   for(j=16; j>0; --j) {

  414.     int b = a;

  415.     a += V;

  416.     for(i=-16; i<0; i+=4) {

  417.       src[16+i] = CLIP((b    ) >> 5);

  418.       src[17+i] = CLIP((b+  H) >> 5);

  419.       src[18+i] = CLIP((b+2*H) >> 5);

  420.       src[19+i] = CLIP((b+3*H) >> 5);

  421.       b += 4*H;

  422.     }

  423.     src += stride;

  424.   }

  425. }

  426. 

  427. static void FUNCC(pred16x16_plane)(uint8_t *src, int stride){

  428.     FUNCC(pred16x16_plane_compat)(src, stride, 0, 0);

  429. }

  430. 

  431. static void FUNCC(pred8x8_vertical)(uint8_t *_src, int _stride){

  432.     int i;

  433.     pixel *src = (pixel*)_src;

  434.     int stride = _stride/sizeof(pixel);

  435.     const pixel4 a= ((pixel4*)(src-stride))[0];

  436.     const pixel4 b= ((pixel4*)(src-stride))[1];

  437. 

  438.     for(i=0; i<8; i++){

  439.         ((pixel4*)(src+i*stride))[0]= a;

  440.         ((pixel4*)(src+i*stride))[1]= b;

  441.     }

  442. }

  443. 

  444. static void FUNCC(pred8x8_horizontal)(uint8_t *_src, int stride){

  445.     int i;

  446.     pixel *src = (pixel*)_src;

  447.     stride /= sizeof(pixel);

  448. 

  449.     for(i=0; i<8; i++){

  450.         ((pixel4*)(src+i*stride))[0]=

  451.         ((pixel4*)(src+i*stride))[1]= PIXEL_SPLAT_X4(src[-1+i*stride]);

  452.     }

  453. }

  454. 

  455. #define PRED8x8_X(n, v)\

  456. static void FUNCC(pred8x8_##n##_dc)(uint8_t *_src, int stride){\

  457.     int i;\

  458.     pixel *src = (pixel*)_src;\

  459.     stride /= sizeof(pixel);\

  460.     for(i=0; i<8; i++){\

  461.         ((pixel4*)(src+i*stride))[0]=\

  462.         ((pixel4*)(src+i*stride))[1]= PIXEL_SPLAT_X4(v);\

  463.     }\

  464. }

  465. 

  466. PRED8x8_X(127, (1<<(BIT_DEPTH-1))-1);

  467. PRED8x8_X(128, (1<<(BIT_DEPTH-1))+0);

  468. PRED8x8_X(129, (1<<(BIT_DEPTH-1))+1);

  469. 

  470. static void FUNCC(pred8x8_left_dc)(uint8_t *_src, int stride){

  471.     int i;

  472.     int dc0, dc2;

  473.     pixel4 dc0splat, dc2splat;

  474.     pixel *src = (pixel*)_src;

  475.     stride /= sizeof(pixel);

  476. 

  477.     dc0=dc2=0;

  478.     for(i=0;i<4; i++){

  479.         dc0+= src[-1+i*stride];

  480.         dc2+= src[-1+(i+4)*stride];

  481.     }

  482.     dc0splat = PIXEL_SPLAT_X4((dc0 + 2)>>2);

  483.     dc2splat = PIXEL_SPLAT_X4((dc2 + 2)>>2);

  484. 

  485.     for(i=0; i<4; i++){

  486.         ((pixel4*)(src+i*stride))[0]=

  487.         ((pixel4*)(src+i*stride))[1]= dc0splat;

  488.     }

  489.     for(i=4; i<8; i++){

  490.         ((pixel4*)(src+i*stride))[0]=

  491.         ((pixel4*)(src+i*stride))[1]= dc2splat;

  492.     }

  493. }

  494. 

  495. static void FUNCC(pred8x8_top_dc)(uint8_t *_src, int stride){

  496.     int i;

  497.     int dc0, dc1;

  498.     pixel4 dc0splat, dc1splat;

  499.     pixel *src = (pixel*)_src;

  500.     stride /= sizeof(pixel);

  501. 

  502.     dc0=dc1=0;

  503.     for(i=0;i<4; i++){

  504.         dc0+= src[i-stride];

  505.         dc1+= src[4+i-stride];

  506.     }

  507.     dc0splat = PIXEL_SPLAT_X4((dc0 + 2)>>2);

  508.     dc1splat = PIXEL_SPLAT_X4((dc1 + 2)>>2);

  509. 

  510.     for(i=0; i<4; i++){

  511.         ((pixel4*)(src+i*stride))[0]= dc0splat;

  512.         ((pixel4*)(src+i*stride))[1]= dc1splat;

  513.     }

  514.     for(i=4; i<8; i++){

  515.         ((pixel4*)(src+i*stride))[0]= dc0splat;

  516.         ((pixel4*)(src+i*stride))[1]= dc1splat;

  517.     }

  518. }

  519. 

  520. static void FUNCC(pred8x8_dc)(uint8_t *_src, int stride){

  521.     int i;

  522.     int dc0, dc1, dc2;

  523.     pixel4 dc0splat, dc1splat, dc2splat, dc3splat;

  524.     pixel *src = (pixel*)_src;

  525.     stride /= sizeof(pixel);

  526. 

  527.     dc0=dc1=dc2=0;

  528.     for(i=0;i<4; i++){

  529.         dc0+= src[-1+i*stride] + src[i-stride];

  530.         dc1+= src[4+i-stride];

  531.         dc2+= src[-1+(i+4)*stride];

  532.     }

  533.     dc0splat = PIXEL_SPLAT_X4((dc0 + 4)>>3);

  534.     dc1splat = PIXEL_SPLAT_X4((dc1 + 2)>>2);

  535.     dc2splat = PIXEL_SPLAT_X4((dc2 + 2)>>2);

  536.     dc3splat = PIXEL_SPLAT_X4((dc1 + dc2 + 4)>>3);

  537. 

  538.     for(i=0; i<4; i++){

  539.         ((pixel4*)(src+i*stride))[0]= dc0splat;

  540.         ((pixel4*)(src+i*stride))[1]= dc1splat;

  541.     }

  542.     for(i=4; i<8; i++){

  543.         ((pixel4*)(src+i*stride))[0]= dc2splat;

  544.         ((pixel4*)(src+i*stride))[1]= dc3splat;

  545.     }

  546. }

  547. 

  548. //the following 4 function should not be optimized!

  549. static void FUNC(pred8x8_mad_cow_dc_l0t)(uint8_t *src, int stride){

  550.     FUNCC(pred8x8_top_dc)(src, stride);

  551.     FUNCC(pred4x4_dc)(src, NULL, stride);

  552. }

  553. 

  554. static void FUNC(pred8x8_mad_cow_dc_0lt)(uint8_t *src, int stride){

  555.     FUNCC(pred8x8_dc)(src, stride);

  556.     FUNCC(pred4x4_top_dc)(src, NULL, stride);

  557. }

  558. 

  559. static void FUNC(pred8x8_mad_cow_dc_l00)(uint8_t *src, int stride){

  560.     FUNCC(pred8x8_left_dc)(src, stride);

  561.     FUNCC(pred4x4_128_dc)(src + 4*stride                  , NULL, stride);

  562.     FUNCC(pred4x4_128_dc)(src + 4*stride + 4*sizeof(pixel), NULL, stride);

  563. }

  564. 

  565. static void FUNC(pred8x8_mad_cow_dc_0l0)(uint8_t *src, int stride){

  566.     FUNCC(pred8x8_left_dc)(src, stride);

  567.     FUNCC(pred4x4_128_dc)(src                  , NULL, stride);

  568.     FUNCC(pred4x4_128_dc)(src + 4*sizeof(pixel), NULL, stride);

  569. }

  570. 

  571. static void FUNCC(pred8x8_plane)(uint8_t *_src, int _stride){

  572.   int j, k;

  573.   int a;

  574.   INIT_CLIP

  575.   pixel *src = (pixel*)_src;

  576.   int stride = _stride/sizeof(pixel);

  577.   const pixel * const src0 = src +3-stride;

  578.   const pixel *       src1 = src +4*stride-1;

  579.   const pixel *       src2 = src1-2*stride;    // == src+2*stride-1;

  580.   int H = src0[1] - src0[-1];

  581.   int V = src1[0] - src2[ 0];

  582.   for(k=2; k<=4; ++k) {

  583.     src1 += stride; src2 -= stride;

  584.     H += k*(src0[k] - src0[-k]);

  585.     V += k*(src1[0] - src2[ 0]);

  586.   }

  587.   H = ( 17*H+16 ) >> 5;

  588.   V = ( 17*V+16 ) >> 5;

  589. 

  590.   a = 16*(src1[0] + src2[8]+1) - 3*(V+H);

  591.   for(j=8; j>0; --j) {

  592.     int b = a;

  593.     a += V;

  594.     src[0] = CLIP((b    ) >> 5);

  595.     src[1] = CLIP((b+  H) >> 5);

  596.     src[2] = CLIP((b+2*H) >> 5);

  597.     src[3] = CLIP((b+3*H) >> 5);

  598.     src[4] = CLIP((b+4*H) >> 5);

  599.     src[5] = CLIP((b+5*H) >> 5);

  600.     src[6] = CLIP((b+6*H) >> 5);

  601.     src[7] = CLIP((b+7*H) >> 5);

  602.     src += stride;

  603.   }

  604. }

  605. 

  606. #define SRC(x,y) src[(x)+(y)*stride]

  607. #define PL(y) \

  608.     const int l##y = (SRC(-1,y-1) + 2*SRC(-1,y) + SRC(-1,y+1) + 2) >> 2;

  609. #define PREDICT_8x8_LOAD_LEFT \

  610.     const int l0 = ((has_topleft ? SRC(-1,-1) : SRC(-1,0)) \

  611.                      + 2*SRC(-1,0) + SRC(-1,1) + 2) >> 2; \

  612.     PL(1) PL(2) PL(3) PL(4) PL(5) PL(6) \

  613.     const int l7 av_unused = (SRC(-1,6) + 3*SRC(-1,7) + 2) >> 2

  614. 

  615. #define PT(x) \

  616.     const int t##x = (SRC(x-1,-1) + 2*SRC(x,-1) + SRC(x+1,-1) + 2) >> 2;

  617. #define PREDICT_8x8_LOAD_TOP \

  618.     const int t0 = ((has_topleft ? SRC(-1,-1) : SRC(0,-1)) \

  619.                      + 2*SRC(0,-1) + SRC(1,-1) + 2) >> 2; \

  620.     PT(1) PT(2) PT(3) PT(4) PT(5) PT(6) \

  621.     const int t7 av_unused = ((has_topright ? SRC(8,-1) : SRC(7,-1)) \

  622.                      + 2*SRC(7,-1) + SRC(6,-1) + 2) >> 2

  623. 

  624. #define PTR(x) \

  625.     t##x = (SRC(x-1,-1) + 2*SRC(x,-1) + SRC(x+1,-1) + 2) >> 2;

  626. #define PREDICT_8x8_LOAD_TOPRIGHT \

  627.     int t8, t9, t10, t11, t12, t13, t14, t15; \

  628.     if(has_topright) { \

  629.         PTR(8) PTR(9) PTR(10) PTR(11) PTR(12) PTR(13) PTR(14) \

  630.         t15 = (SRC(14,-1) + 3*SRC(15,-1) + 2) >> 2; \

  631.     } else t8=t9=t10=t11=t12=t13=t14=t15= SRC(7,-1);

  632. 

  633. #define PREDICT_8x8_LOAD_TOPLEFT \

  634.     const int lt = (SRC(-1,0) + 2*SRC(-1,-1) + SRC(0,-1) + 2) >> 2

  635. 

  636. #define PREDICT_8x8_DC(v) \

  637.     int y; \

  638.     for( y = 0; y < 8; y++ ) { \

  639.         ((pixel4*)src)[0] = \

  640.         ((pixel4*)src)[1] = v; \

  641.         src += stride; \

  642.     }

  643. 

  644. static void FUNCC(pred8x8l_128_dc)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  645. {

  646.     pixel *src = (pixel*)_src;

  647.     int stride = _stride/sizeof(pixel);

  648. 

  649.     PREDICT_8x8_DC(PIXEL_SPLAT_X4(1<<(BIT_DEPTH-1)));

  650. }

  651. static void FUNCC(pred8x8l_left_dc)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  652. {

  653.     pixel *src = (pixel*)_src;

  654.     int stride = _stride/sizeof(pixel);

  655. 

  656.     PREDICT_8x8_LOAD_LEFT;

  657.     const pixel4 dc = PIXEL_SPLAT_X4((l0+l1+l2+l3+l4+l5+l6+l7+4) >> 3);

  658.     PREDICT_8x8_DC(dc);

  659. }

  660. static void FUNCC(pred8x8l_top_dc)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  661. {

  662.     pixel *src = (pixel*)_src;

  663.     int stride = _stride/sizeof(pixel);

  664. 

  665.     PREDICT_8x8_LOAD_TOP;

  666.     const pixel4 dc = PIXEL_SPLAT_X4((t0+t1+t2+t3+t4+t5+t6+t7+4) >> 3);

  667.     PREDICT_8x8_DC(dc);

  668. }

  669. static void FUNCC(pred8x8l_dc)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  670. {

  671.     pixel *src = (pixel*)_src;

  672.     int stride = _stride/sizeof(pixel);

  673. 

  674.     PREDICT_8x8_LOAD_LEFT;

  675.     PREDICT_8x8_LOAD_TOP;

  676.     const pixel4 dc = PIXEL_SPLAT_X4((l0+l1+l2+l3+l4+l5+l6+l7

  677.                                      +t0+t1+t2+t3+t4+t5+t6+t7+8) >> 4);

  678.     PREDICT_8x8_DC(dc);

  679. }

  680. static void FUNCC(pred8x8l_horizontal)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  681. {

  682.     pixel *src = (pixel*)_src;

  683.     int stride = _stride/sizeof(pixel);

  684. 

  685.     PREDICT_8x8_LOAD_LEFT;

  686. #define ROW(y) ((pixel4*)(src+y*stride))[0] =\

  687.                ((pixel4*)(src+y*stride))[1] = PIXEL_SPLAT_X4(l##y)

  688.     ROW(0); ROW(1); ROW(2); ROW(3); ROW(4); ROW(5); ROW(6); ROW(7);

  689. #undef ROW

  690. }

  691. static void FUNCC(pred8x8l_vertical)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  692. {

  693.     int y;

  694.     pixel *src = (pixel*)_src;

  695.     int stride = _stride/sizeof(pixel);

  696. 

  697.     PREDICT_8x8_LOAD_TOP;

  698.     src[0] = t0;

  699.     src[1] = t1;

  700.     src[2] = t2;

  701.     src[3] = t3;

  702.     src[4] = t4;

  703.     src[5] = t5;

  704.     src[6] = t6;

  705.     src[7] = t7;

  706.     for( y = 1; y < 8; y++ ) {

  707.         ((pixel4*)(src+y*stride))[0] = ((pixel4*)src)[0];

  708.         ((pixel4*)(src+y*stride))[1] = ((pixel4*)src)[1];

  709.     }

  710. }

  711. static void FUNCC(pred8x8l_down_left)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  712. {

  713.     pixel *src = (pixel*)_src;

  714.     int stride = _stride/sizeof(pixel);

  715.     PREDICT_8x8_LOAD_TOP;

  716.     PREDICT_8x8_LOAD_TOPRIGHT;

  717.     SRC(0,0)= (t0 + 2*t1 + t2 + 2) >> 2;

  718.     SRC(0,1)=SRC(1,0)= (t1 + 2*t2 + t3 + 2) >> 2;

  719.     SRC(0,2)=SRC(1,1)=SRC(2,0)= (t2 + 2*t3 + t4 + 2) >> 2;

  720.     SRC(0,3)=SRC(1,2)=SRC(2,1)=SRC(3,0)= (t3 + 2*t4 + t5 + 2) >> 2;

  721.     SRC(0,4)=SRC(1,3)=SRC(2,2)=SRC(3,1)=SRC(4,0)= (t4 + 2*t5 + t6 + 2) >> 2;

  722.     SRC(0,5)=SRC(1,4)=SRC(2,3)=SRC(3,2)=SRC(4,1)=SRC(5,0)= (t5 + 2*t6 + t7 + 2) >> 2;

  723.     SRC(0,6)=SRC(1,5)=SRC(2,4)=SRC(3,3)=SRC(4,2)=SRC(5,1)=SRC(6,0)= (t6 + 2*t7 + t8 + 2) >> 2;

  724.     SRC(0,7)=SRC(1,6)=SRC(2,5)=SRC(3,4)=SRC(4,3)=SRC(5,2)=SRC(6,1)=SRC(7,0)= (t7 + 2*t8 + t9 + 2) >> 2;

  725.     SRC(1,7)=SRC(2,6)=SRC(3,5)=SRC(4,4)=SRC(5,3)=SRC(6,2)=SRC(7,1)= (t8 + 2*t9 + t10 + 2) >> 2;

  726.     SRC(2,7)=SRC(3,6)=SRC(4,5)=SRC(5,4)=SRC(6,3)=SRC(7,2)= (t9 + 2*t10 + t11 + 2) >> 2;

  727.     SRC(3,7)=SRC(4,6)=SRC(5,5)=SRC(6,4)=SRC(7,3)= (t10 + 2*t11 + t12 + 2) >> 2;

  728.     SRC(4,7)=SRC(5,6)=SRC(6,5)=SRC(7,4)= (t11 + 2*t12 + t13 + 2) >> 2;

  729.     SRC(5,7)=SRC(6,6)=SRC(7,5)= (t12 + 2*t13 + t14 + 2) >> 2;

  730.     SRC(6,7)=SRC(7,6)= (t13 + 2*t14 + t15 + 2) >> 2;

  731.     SRC(7,7)= (t14 + 3*t15 + 2) >> 2;

  732. }

  733. static void FUNCC(pred8x8l_down_right)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  734. {

  735.     pixel *src = (pixel*)_src;

  736.     int stride = _stride/sizeof(pixel);

  737.     PREDICT_8x8_LOAD_TOP;

  738.     PREDICT_8x8_LOAD_LEFT;

  739.     PREDICT_8x8_LOAD_TOPLEFT;

  740.     SRC(0,7)= (l7 + 2*l6 + l5 + 2) >> 2;

  741.     SRC(0,6)=SRC(1,7)= (l6 + 2*l5 + l4 + 2) >> 2;

  742.     SRC(0,5)=SRC(1,6)=SRC(2,7)= (l5 + 2*l4 + l3 + 2) >> 2;

  743.     SRC(0,4)=SRC(1,5)=SRC(2,6)=SRC(3,7)= (l4 + 2*l3 + l2 + 2) >> 2;

  744.     SRC(0,3)=SRC(1,4)=SRC(2,5)=SRC(3,6)=SRC(4,7)= (l3 + 2*l2 + l1 + 2) >> 2;

  745.     SRC(0,2)=SRC(1,3)=SRC(2,4)=SRC(3,5)=SRC(4,6)=SRC(5,7)= (l2 + 2*l1 + l0 + 2) >> 2;

  746.     SRC(0,1)=SRC(1,2)=SRC(2,3)=SRC(3,4)=SRC(4,5)=SRC(5,6)=SRC(6,7)= (l1 + 2*l0 + lt + 2) >> 2;

  747.     SRC(0,0)=SRC(1,1)=SRC(2,2)=SRC(3,3)=SRC(4,4)=SRC(5,5)=SRC(6,6)=SRC(7,7)= (l0 + 2*lt + t0 + 2) >> 2;

  748.     SRC(1,0)=SRC(2,1)=SRC(3,2)=SRC(4,3)=SRC(5,4)=SRC(6,5)=SRC(7,6)= (lt + 2*t0 + t1 + 2) >> 2;

  749.     SRC(2,0)=SRC(3,1)=SRC(4,2)=SRC(5,3)=SRC(6,4)=SRC(7,5)= (t0 + 2*t1 + t2 + 2) >> 2;

  750.     SRC(3,0)=SRC(4,1)=SRC(5,2)=SRC(6,3)=SRC(7,4)= (t1 + 2*t2 + t3 + 2) >> 2;

  751.     SRC(4,0)=SRC(5,1)=SRC(6,2)=SRC(7,3)= (t2 + 2*t3 + t4 + 2) >> 2;

  752.     SRC(5,0)=SRC(6,1)=SRC(7,2)= (t3 + 2*t4 + t5 + 2) >> 2;

  753.     SRC(6,0)=SRC(7,1)= (t4 + 2*t5 + t6 + 2) >> 2;

  754.     SRC(7,0)= (t5 + 2*t6 + t7 + 2) >> 2;

  755. }

  756. static void FUNCC(pred8x8l_vertical_right)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  757. {

  758.     pixel *src = (pixel*)_src;

  759.     int stride = _stride/sizeof(pixel);

  760.     PREDICT_8x8_LOAD_TOP;

  761.     PREDICT_8x8_LOAD_LEFT;

  762.     PREDICT_8x8_LOAD_TOPLEFT;

  763.     SRC(0,6)= (l5 + 2*l4 + l3 + 2) >> 2;

  764.     SRC(0,7)= (l6 + 2*l5 + l4 + 2) >> 2;

  765.     SRC(0,4)=SRC(1,6)= (l3 + 2*l2 + l1 + 2) >> 2;

  766.     SRC(0,5)=SRC(1,7)= (l4 + 2*l3 + l2 + 2) >> 2;

  767.     SRC(0,2)=SRC(1,4)=SRC(2,6)= (l1 + 2*l0 + lt + 2) >> 2;

  768.     SRC(0,3)=SRC(1,5)=SRC(2,7)= (l2 + 2*l1 + l0 + 2) >> 2;

  769.     SRC(0,1)=SRC(1,3)=SRC(2,5)=SRC(3,7)= (l0 + 2*lt + t0 + 2) >> 2;

  770.     SRC(0,0)=SRC(1,2)=SRC(2,4)=SRC(3,6)= (lt + t0 + 1) >> 1;

  771.     SRC(1,1)=SRC(2,3)=SRC(3,5)=SRC(4,7)= (lt + 2*t0 + t1 + 2) >> 2;

  772.     SRC(1,0)=SRC(2,2)=SRC(3,4)=SRC(4,6)= (t0 + t1 + 1) >> 1;

  773.     SRC(2,1)=SRC(3,3)=SRC(4,5)=SRC(5,7)= (t0 + 2*t1 + t2 + 2) >> 2;

  774.     SRC(2,0)=SRC(3,2)=SRC(4,4)=SRC(5,6)= (t1 + t2 + 1) >> 1;

  775.     SRC(3,1)=SRC(4,3)=SRC(5,5)=SRC(6,7)= (t1 + 2*t2 + t3 + 2) >> 2;

  776.     SRC(3,0)=SRC(4,2)=SRC(5,4)=SRC(6,6)= (t2 + t3 + 1) >> 1;

  777.     SRC(4,1)=SRC(5,3)=SRC(6,5)=SRC(7,7)= (t2 + 2*t3 + t4 + 2) >> 2;

  778.     SRC(4,0)=SRC(5,2)=SRC(6,4)=SRC(7,6)= (t3 + t4 + 1) >> 1;

  779.     SRC(5,1)=SRC(6,3)=SRC(7,5)= (t3 + 2*t4 + t5 + 2) >> 2;

  780.     SRC(5,0)=SRC(6,2)=SRC(7,4)= (t4 + t5 + 1) >> 1;

  781.     SRC(6,1)=SRC(7,3)= (t4 + 2*t5 + t6 + 2) >> 2;

  782.     SRC(6,0)=SRC(7,2)= (t5 + t6 + 1) >> 1;

  783.     SRC(7,1)= (t5 + 2*t6 + t7 + 2) >> 2;

  784.     SRC(7,0)= (t6 + t7 + 1) >> 1;

  785. }

  786. static void FUNCC(pred8x8l_horizontal_down)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  787. {

  788.     pixel *src = (pixel*)_src;

  789.     int stride = _stride/sizeof(pixel);

  790.     PREDICT_8x8_LOAD_TOP;

  791.     PREDICT_8x8_LOAD_LEFT;

  792.     PREDICT_8x8_LOAD_TOPLEFT;

  793.     SRC(0,7)= (l6 + l7 + 1) >> 1;

  794.     SRC(1,7)= (l5 + 2*l6 + l7 + 2) >> 2;

  795.     SRC(0,6)=SRC(2,7)= (l5 + l6 + 1) >> 1;

  796.     SRC(1,6)=SRC(3,7)= (l4 + 2*l5 + l6 + 2) >> 2;

  797.     SRC(0,5)=SRC(2,6)=SRC(4,7)= (l4 + l5 + 1) >> 1;

  798.     SRC(1,5)=SRC(3,6)=SRC(5,7)= (l3 + 2*l4 + l5 + 2) >> 2;

  799.     SRC(0,4)=SRC(2,5)=SRC(4,6)=SRC(6,7)= (l3 + l4 + 1) >> 1;

  800.     SRC(1,4)=SRC(3,5)=SRC(5,6)=SRC(7,7)= (l2 + 2*l3 + l4 + 2) >> 2;

  801.     SRC(0,3)=SRC(2,4)=SRC(4,5)=SRC(6,6)= (l2 + l3 + 1) >> 1;

  802.     SRC(1,3)=SRC(3,4)=SRC(5,5)=SRC(7,6)= (l1 + 2*l2 + l3 + 2) >> 2;

  803.     SRC(0,2)=SRC(2,3)=SRC(4,4)=SRC(6,5)= (l1 + l2 + 1) >> 1;

  804.     SRC(1,2)=SRC(3,3)=SRC(5,4)=SRC(7,5)= (l0 + 2*l1 + l2 + 2) >> 2;

  805.     SRC(0,1)=SRC(2,2)=SRC(4,3)=SRC(6,4)= (l0 + l1 + 1) >> 1;

  806.     SRC(1,1)=SRC(3,2)=SRC(5,3)=SRC(7,4)= (lt + 2*l0 + l1 + 2) >> 2;

  807.     SRC(0,0)=SRC(2,1)=SRC(4,2)=SRC(6,3)= (lt + l0 + 1) >> 1;

  808.     SRC(1,0)=SRC(3,1)=SRC(5,2)=SRC(7,3)= (l0 + 2*lt + t0 + 2) >> 2;

  809.     SRC(2,0)=SRC(4,1)=SRC(6,2)= (t1 + 2*t0 + lt + 2) >> 2;

  810.     SRC(3,0)=SRC(5,1)=SRC(7,2)= (t2 + 2*t1 + t0 + 2) >> 2;

  811.     SRC(4,0)=SRC(6,1)= (t3 + 2*t2 + t1 + 2) >> 2;

  812.     SRC(5,0)=SRC(7,1)= (t4 + 2*t3 + t2 + 2) >> 2;

  813.     SRC(6,0)= (t5 + 2*t4 + t3 + 2) >> 2;

  814.     SRC(7,0)= (t6 + 2*t5 + t4 + 2) >> 2;

  815. }

  816. static void FUNCC(pred8x8l_vertical_left)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  817. {

  818.     pixel *src = (pixel*)_src;

  819.     int stride = _stride/sizeof(pixel);

  820.     PREDICT_8x8_LOAD_TOP;

  821.     PREDICT_8x8_LOAD_TOPRIGHT;

  822.     SRC(0,0)= (t0 + t1 + 1) >> 1;

  823.     SRC(0,1)= (t0 + 2*t1 + t2 + 2) >> 2;

  824.     SRC(0,2)=SRC(1,0)= (t1 + t2 + 1) >> 1;

  825.     SRC(0,3)=SRC(1,1)= (t1 + 2*t2 + t3 + 2) >> 2;

  826.     SRC(0,4)=SRC(1,2)=SRC(2,0)= (t2 + t3 + 1) >> 1;

  827.     SRC(0,5)=SRC(1,3)=SRC(2,1)= (t2 + 2*t3 + t4 + 2) >> 2;

  828.     SRC(0,6)=SRC(1,4)=SRC(2,2)=SRC(3,0)= (t3 + t4 + 1) >> 1;

  829.     SRC(0,7)=SRC(1,5)=SRC(2,3)=SRC(3,1)= (t3 + 2*t4 + t5 + 2) >> 2;

  830.     SRC(1,6)=SRC(2,4)=SRC(3,2)=SRC(4,0)= (t4 + t5 + 1) >> 1;

  831.     SRC(1,7)=SRC(2,5)=SRC(3,3)=SRC(4,1)= (t4 + 2*t5 + t6 + 2) >> 2;

  832.     SRC(2,6)=SRC(3,4)=SRC(4,2)=SRC(5,0)= (t5 + t6 + 1) >> 1;

  833.     SRC(2,7)=SRC(3,5)=SRC(4,3)=SRC(5,1)= (t5 + 2*t6 + t7 + 2) >> 2;

  834.     SRC(3,6)=SRC(4,4)=SRC(5,2)=SRC(6,0)= (t6 + t7 + 1) >> 1;

  835.     SRC(3,7)=SRC(4,5)=SRC(5,3)=SRC(6,1)= (t6 + 2*t7 + t8 + 2) >> 2;

  836.     SRC(4,6)=SRC(5,4)=SRC(6,2)=SRC(7,0)= (t7 + t8 + 1) >> 1;

  837.     SRC(4,7)=SRC(5,5)=SRC(6,3)=SRC(7,1)= (t7 + 2*t8 + t9 + 2) >> 2;

  838.     SRC(5,6)=SRC(6,4)=SRC(7,2)= (t8 + t9 + 1) >> 1;

  839.     SRC(5,7)=SRC(6,5)=SRC(7,3)= (t8 + 2*t9 + t10 + 2) >> 2;

  840.     SRC(6,6)=SRC(7,4)= (t9 + t10 + 1) >> 1;

  841.     SRC(6,7)=SRC(7,5)= (t9 + 2*t10 + t11 + 2) >> 2;

  842.     SRC(7,6)= (t10 + t11 + 1) >> 1;

  843.     SRC(7,7)= (t10 + 2*t11 + t12 + 2) >> 2;

  844. }

  845. static void FUNCC(pred8x8l_horizontal_up)(uint8_t *_src, int has_topleft, int has_topright, int _stride)

  846. {

  847.     pixel *src = (pixel*)_src;

  848.     int stride = _stride/sizeof(pixel);

  849.     PREDICT_8x8_LOAD_LEFT;

  850.     SRC(0,0)= (l0 + l1 + 1) >> 1;

  851.     SRC(1,0)= (l0 + 2*l1 + l2 + 2) >> 2;

  852.     SRC(0,1)=SRC(2,0)= (l1 + l2 + 1) >> 1;

  853.     SRC(1,1)=SRC(3,0)= (l1 + 2*l2 + l3 + 2) >> 2;

  854.     SRC(0,2)=SRC(2,1)=SRC(4,0)= (l2 + l3 + 1) >> 1;

  855.     SRC(1,2)=SRC(3,1)=SRC(5,0)= (l2 + 2*l3 + l4 + 2) >> 2;

  856.     SRC(0,3)=SRC(2,2)=SRC(4,1)=SRC(6,0)= (l3 + l4 + 1) >> 1;

  857.     SRC(1,3)=SRC(3,2)=SRC(5,1)=SRC(7,0)= (l3 + 2*l4 + l5 + 2) >> 2;

  858.     SRC(0,4)=SRC(2,3)=SRC(4,2)=SRC(6,1)= (l4 + l5 + 1) >> 1;

  859.     SRC(1,4)=SRC(3,3)=SRC(5,2)=SRC(7,1)= (l4 + 2*l5 + l6 + 2) >> 2;

  860.     SRC(0,5)=SRC(2,4)=SRC(4,3)=SRC(6,2)= (l5 + l6 + 1) >> 1;

  861.     SRC(1,5)=SRC(3,4)=SRC(5,3)=SRC(7,2)= (l5 + 2*l6 + l7 + 2) >> 2;

  862.     SRC(0,6)=SRC(2,5)=SRC(4,4)=SRC(6,3)= (l6 + l7 + 1) >> 1;

  863.     SRC(1,6)=SRC(3,5)=SRC(5,4)=SRC(7,3)= (l6 + 3*l7 + 2) >> 2;

  864.     SRC(0,7)=SRC(1,7)=SRC(2,6)=SRC(2,7)=SRC(3,6)=

  865.     SRC(3,7)=SRC(4,5)=SRC(4,6)=SRC(4,7)=SRC(5,5)=

  866.     SRC(5,6)=SRC(5,7)=SRC(6,4)=SRC(6,5)=SRC(6,6)=

  867.     SRC(6,7)=SRC(7,4)=SRC(7,5)=SRC(7,6)=SRC(7,7)= l7;

  868. }

  869. #undef PREDICT_8x8_LOAD_LEFT

  870. #undef PREDICT_8x8_LOAD_TOP

  871. #undef PREDICT_8x8_LOAD_TOPLEFT

  872. #undef PREDICT_8x8_LOAD_TOPRIGHT

  873. #undef PREDICT_8x8_DC

  874. #undef PTR

  875. #undef PT

  876. #undef PL

  877. #undef SRC

  878. 

  879. static void FUNCC(pred4x4_vertical_add)(uint8_t *_pix, const DCTELEM *_block, int stride){

  880.     int i;

  881.     pixel *pix = (pixel*)_pix;

  882.     const dctcoef *block = (const dctcoef*)_block;

  883.     stride /= sizeof(pixel);

  884.     pix -= stride;

  885.     for(i=0; i<4; i++){

  886.         pixel v = pix[0];

  887.         pix[1*stride]= v += block[0];

  888.         pix[2*stride]= v += block[4];

  889.         pix[3*stride]= v += block[8];

  890.         pix[4*stride]= v +  block[12];

  891.         pix++;

  892.         block++;

  893.     }

  894. }

  895. 

  896. static void FUNCC(pred4x4_horizontal_add)(uint8_t *_pix, const DCTELEM *_block, int stride){

  897.     int i;

  898.     pixel *pix = (pixel*)_pix;

  899.     const dctcoef *block = (const dctcoef*)_block;

  900.     stride /= sizeof(pixel);

  901.     for(i=0; i<4; i++){

  902.         pixel v = pix[-1];

  903.         pix[0]= v += block[0];

  904.         pix[1]= v += block[1];

  905.         pix[2]= v += block[2];

  906.         pix[3]= v +  block[3];

  907.         pix+= stride;

  908.         block+= 4;

  909.     }

  910. }

  911. 

  912. static void FUNCC(pred8x8l_vertical_add)(uint8_t *_pix, const DCTELEM *_block, int stride){

  913.     int i;

  914.     pixel *pix = (pixel*)_pix;

  915.     const dctcoef *block = (const dctcoef*)_block;

  916.     stride /= sizeof(pixel);

  917.     pix -= stride;

  918.     for(i=0; i<8; i++){

  919.         pixel v = pix[0];

  920.         pix[1*stride]= v += block[0];

  921.         pix[2*stride]= v += block[8];

  922.         pix[3*stride]= v += block[16];

  923.         pix[4*stride]= v += block[24];

  924.         pix[5*stride]= v += block[32];

  925.         pix[6*stride]= v += block[40];

  926.         pix[7*stride]= v += block[48];

  927.         pix[8*stride]= v +  block[56];

  928.         pix++;

  929.         block++;

  930.     }

  931. }

  932. 

  933. static void FUNCC(pred8x8l_horizontal_add)(uint8_t *_pix, const DCTELEM *_block, int stride){

  934.     int i;

  935.     pixel *pix = (pixel*)_pix;

  936.     const dctcoef *block = (const dctcoef*)_block;

  937.     stride /= sizeof(pixel);

  938.     for(i=0; i<8; i++){

  939.         pixel v = pix[-1];

  940.         pix[0]= v += block[0];

  941.         pix[1]= v += block[1];

  942.         pix[2]= v += block[2];

  943.         pix[3]= v += block[3];

  944.         pix[4]= v += block[4];

  945.         pix[5]= v += block[5];

  946.         pix[6]= v += block[6];

  947.         pix[7]= v +  block[7];

  948.         pix+= stride;

  949.         block+= 8;

  950.     }

  951. }

  952. 

  953. static void FUNCC(pred16x16_vertical_add)(uint8_t *pix, const int *block_offset, const DCTELEM *block, int stride){

  954.     int i;

  955.     for(i=0; i<16; i++)

  956.         FUNCC(pred4x4_vertical_add)(pix + block_offset[i], block + i*16*sizeof(pixel), stride);

  957. }

  958. 

  959. static void FUNCC(pred16x16_horizontal_add)(uint8_t *pix, const int *block_offset, const DCTELEM *block, int stride){

  960.     int i;

  961.     for(i=0; i<16; i++)

  962.         FUNCC(pred4x4_horizontal_add)(pix + block_offset[i], block + i*16*sizeof(pixel), stride);

  963. }

  964. 

  965. static void FUNCC(pred8x8_vertical_add)(uint8_t *pix, const int *block_offset, const DCTELEM *block, int stride){

  966.     int i;

  967.     for(i=0; i<4; i++)

  968.         FUNCC(pred4x4_vertical_add)(pix + block_offset[i], block + i*16*sizeof(pixel), stride);

  969. }

  970. 

  971. static void FUNCC(pred8x8_horizontal_add)(uint8_t *pix, const int *block_offset, const DCTELEM *block, int stride){

  972.     int i;

  973.     for(i=0; i<4; i++)

  974.         FUNCC(pred4x4_horizontal_add)(pix + block_offset[i], block + i*16*sizeof(pixel), stride);

  975. }