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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= AV_RN4PA(src-stride);

  35. 

  36.     AV_WN4PA(src+0*stride, a);

  37.     AV_WN4PA(src+1*stride, a);

  38.     AV_WN4PA(src+2*stride, a);

  39.     AV_WN4PA(src+3*stride, a);

  40. }

  41. 

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

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

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

  45.     AV_WN4PA(src+0*stride, PIXEL_SPLAT_X4(src[-1+0*stride]));

  46.     AV_WN4PA(src+1*stride, PIXEL_SPLAT_X4(src[-1+1*stride]));

  47.     AV_WN4PA(src+2*stride, PIXEL_SPLAT_X4(src[-1+2*stride]));

  48.     AV_WN4PA(src+3*stride, PIXEL_SPLAT_X4(src[-1+3*stride]));

  49. }

  50. 

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

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

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

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

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

  56.     const pixel4 a = PIXEL_SPLAT_X4(dc);

  57. 

  58.     AV_WN4PA(src+0*stride, a);

  59.     AV_WN4PA(src+1*stride, a);

  60.     AV_WN4PA(src+2*stride, a);

  61.     AV_WN4PA(src+3*stride, a);

  62. }

  63. 

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

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

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

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

  68.     const pixel4 a = PIXEL_SPLAT_X4(dc);

  69. 

  70.     AV_WN4PA(src+0*stride, a);

  71.     AV_WN4PA(src+1*stride, a);

  72.     AV_WN4PA(src+2*stride, a);

  73.     AV_WN4PA(src+3*stride, a);

  74. }

  75. 

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

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

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

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

  80.     const pixel4 a = PIXEL_SPLAT_X4(dc);

  81. 

  82.     AV_WN4PA(src+0*stride, a);

  83.     AV_WN4PA(src+1*stride, a);

  84.     AV_WN4PA(src+2*stride, a);

  85.     AV_WN4PA(src+3*stride, a);

  86. }

  87. 

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

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

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

  91.     const pixel4 a = PIXEL_SPLAT_X4(1<<(BIT_DEPTH-1));

  92. 

  93.     AV_WN4PA(src+0*stride, a);

  94.     AV_WN4PA(src+1*stride, a);

  95.     AV_WN4PA(src+2*stride, a);

  96.     AV_WN4PA(src+3*stride, a);

  97. }

  98. 

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

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

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

  102.     const pixel4 a = PIXEL_SPLAT_X4((1<<(BIT_DEPTH-1))-1);

  103. 

  104.     AV_WN4PA(src+0*stride, a);

  105.     AV_WN4PA(src+1*stride, a);

  106.     AV_WN4PA(src+2*stride, a);

  107.     AV_WN4PA(src+3*stride, a);

  108. }

  109. 

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

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

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

  113.     const pixel4 a = PIXEL_SPLAT_X4((1<<(BIT_DEPTH-1))+1);

  114. 

  115.     AV_WN4PA(src+0*stride, a);

  116.     AV_WN4PA(src+1*stride, a);

  117.     AV_WN4PA(src+2*stride, a);

  118.     AV_WN4PA(src+3*stride, a);

  119. }

  120. 

  121. 

  122. #define LOAD_TOP_RIGHT_EDGE\

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

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

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

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

  127. 

  128. #define LOAD_DOWN_LEFT_EDGE\

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

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

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

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

  133. 

  134. #define LOAD_LEFT_EDGE\

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

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

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

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

  139. 

  140. #define LOAD_TOP_EDGE\

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

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

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

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

  145. 

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

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

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

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

  150.     LOAD_TOP_EDGE

  151.     LOAD_LEFT_EDGE

  152. 

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

  154.     src[0+2*stride]=

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

  156.     src[0+1*stride]=

  157.     src[1+2*stride]=

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

  159.     src[0+0*stride]=

  160.     src[1+1*stride]=

  161.     src[2+2*stride]=

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

  163.     src[1+0*stride]=

  164.     src[2+1*stride]=

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

  166.     src[2+0*stride]=

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

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

  169. }

  170. 

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

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

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

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

  175.     LOAD_TOP_EDGE

  176.     LOAD_TOP_RIGHT_EDGE

  177. //    LOAD_LEFT_EDGE

  178. 

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

  180.     src[1+0*stride]=

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

  182.     src[2+0*stride]=

  183.     src[1+1*stride]=

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

  185.     src[3+0*stride]=

  186.     src[2+1*stride]=

  187.     src[1+2*stride]=

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

  189.     src[3+1*stride]=

  190.     src[2+2*stride]=

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

  192.     src[3+2*stride]=

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

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

  195. }

  196. 

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

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

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

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

  201.     LOAD_TOP_EDGE

  202.     LOAD_LEFT_EDGE

  203. 

  204.     src[0+0*stride]=

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

  206.     src[1+0*stride]=

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

  208.     src[2+0*stride]=

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

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

  211.     src[0+1*stride]=

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

  213.     src[1+1*stride]=

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

  215.     src[2+1*stride]=

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

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

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

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

  220. }

  221. 

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

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

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

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

  226.     LOAD_TOP_EDGE

  227.     LOAD_TOP_RIGHT_EDGE

  228. 

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

  230.     src[1+0*stride]=

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

  232.     src[2+0*stride]=

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

  234.     src[3+0*stride]=

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

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

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

  238.     src[1+1*stride]=

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

  240.     src[2+1*stride]=

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

  242.     src[3+1*stride]=

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

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

  245. }

  246. 

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

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

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

  250.     LOAD_LEFT_EDGE

  251. 

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

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

  254.     src[2+0*stride]=

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

  256.     src[3+0*stride]=

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

  258.     src[2+1*stride]=

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

  260.     src[3+1*stride]=

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

  262.     src[3+2*stride]=

  263.     src[1+3*stride]=

  264.     src[0+3*stride]=

  265.     src[2+2*stride]=

  266.     src[2+3*stride]=

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

  268. }

  269. 

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

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

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

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

  274.     LOAD_TOP_EDGE

  275.     LOAD_LEFT_EDGE

  276. 

  277.     src[0+0*stride]=

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

  279.     src[1+0*stride]=

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

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

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

  283.     src[0+1*stride]=

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

  285.     src[1+1*stride]=

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

  287.     src[0+2*stride]=

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

  289.     src[1+2*stride]=

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

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

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

  293. }

  294. 

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

  296.     int i;

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

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

  299.     const pixel4 a = AV_RN4PA(((pixel4*)(src-stride))+0);

  300.     const pixel4 b = AV_RN4PA(((pixel4*)(src-stride))+1);

  301.     const pixel4 c = AV_RN4PA(((pixel4*)(src-stride))+2);

  302.     const pixel4 d = AV_RN4PA(((pixel4*)(src-stride))+3);

  303. 

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

  305.         AV_WN4PA(((pixel4*)(src+i*stride))+0, a);

  306.         AV_WN4PA(((pixel4*)(src+i*stride))+1, b);

  307.         AV_WN4PA(((pixel4*)(src+i*stride))+2, c);

  308.         AV_WN4PA(((pixel4*)(src+i*stride))+3, d);

  309.     }

  310. }

  311. 

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

  313.     int i;

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

  315.     stride /= sizeof(pixel);

  316. 

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

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

  319. 

  320.         AV_WN4PA(((pixel4*)(src+i*stride))+0, a);

  321.         AV_WN4PA(((pixel4*)(src+i*stride))+1, a);

  322.         AV_WN4PA(((pixel4*)(src+i*stride))+2, a);

  323.         AV_WN4PA(((pixel4*)(src+i*stride))+3, a);

  324.     }

  325. }

  326. 

  327. #define PREDICT_16x16_DC(v)\

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

  329.         AV_WN4PA(src+ 0, v);\

  330.         AV_WN4PA(src+ 4, v);\

  331.         AV_WN4PA(src+ 8, v);\

  332.         AV_WN4PA(src+12, v);\

  333.         src += stride;\

  334.     }

  335. 

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

  337.     int i, dc=0;

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

  339.     pixel4 dcsplat;

  340.     stride /= sizeof(pixel);

  341. 

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

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

  344.     }

  345. 

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

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

  348.     }

  349. 

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

  351.     PREDICT_16x16_DC(dcsplat);

  352. }

  353. 

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

  355.     int i, dc=0;

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

  357.     pixel4 dcsplat;

  358.     stride /= sizeof(pixel);

  359. 

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

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

  362.     }

  363. 

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

  365.     PREDICT_16x16_DC(dcsplat);

  366. }

  367. 

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

  369.     int i, dc=0;

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

  371.     pixel4 dcsplat;

  372.     stride /= sizeof(pixel);

  373. 

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

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

  376.     }

  377. 

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

  379.     PREDICT_16x16_DC(dcsplat);

  380. }

  381. 

  382. #define PRED16x16_X(n, v) \

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

  384.     int i;\

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

  386.     stride /= sizeof(pixel);\

  387.     PREDICT_16x16_DC(PIXEL_SPLAT_X4(v));\

  388. }

  389. 

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

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

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

  393. 

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

  395.   int i, j, k;

  396.   int a;

  397.   INIT_CLIP

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

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

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

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

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

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

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

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

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

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

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

  409.   }

  410.   if(svq3){

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

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

  413. 

  414.     /* required for 100% accuracy */

  415.     i = H; H = V; V = i;

  416.   }else if(rv40){

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

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

  419.   }else{

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

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

  422.   }

  423. 

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

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

  426.     int b = a;

  427.     a += V;

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

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

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

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

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

  433.       b += 4*H;

  434.     }

  435.     src += stride;

  436.   }

  437. }

  438. 

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

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

  441. }

  442. 

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

  444.     int i;

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

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

  447.     const pixel4 a= AV_RN4PA(((pixel4*)(src-stride))+0);

  448.     const pixel4 b= AV_RN4PA(((pixel4*)(src-stride))+1);

  449. 

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

  451.         AV_WN4PA(((pixel4*)(src+i*stride))+0, a);

  452.         AV_WN4PA(((pixel4*)(src+i*stride))+1, b);

  453.     }

  454. }

  455. 

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

  457.     int i;

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

  459.     stride /= sizeof(pixel);

  460. 

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

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

  463.         AV_WN4PA(((pixel4*)(src+i*stride))+0, a);

  464.         AV_WN4PA(((pixel4*)(src+i*stride))+1, a);

  465.     }

  466. }

  467. 

  468. #define PRED8x8_X(n, v)\

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

  470.     int i;\

  471.     const pixel4 a = PIXEL_SPLAT_X4(v);\

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

  473.     stride /= sizeof(pixel);\

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

  475.         AV_WN4PA(((pixel4*)(src+i*stride))+0, a);\

  476.         AV_WN4PA(((pixel4*)(src+i*stride))+1, a);\

  477.     }\

  478. }

  479. 

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

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

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

  483. 

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

  485.     int i;

  486.     int dc0, dc2;

  487.     pixel4 dc0splat, dc2splat;

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

  489.     stride /= sizeof(pixel);

  490. 

  491.     dc0=dc2=0;

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

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

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

  495.     }

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

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

  498. 

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

  500.         AV_WN4PA(((pixel4*)(src+i*stride))+0, dc0splat);

  501.         AV_WN4PA(((pixel4*)(src+i*stride))+1, dc0splat);

  502.     }

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

  504.         AV_WN4PA(((pixel4*)(src+i*stride))+0, dc2splat);

  505.         AV_WN4PA(((pixel4*)(src+i*stride))+1, dc2splat);

  506.     }

  507. }

  508. 

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

  510.     int i;

  511.     int dc0, dc1;

  512.     pixel4 dc0splat, dc1splat;

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

  514.     stride /= sizeof(pixel);

  515. 

  516.     dc0=dc1=0;

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

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

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

  520.     }

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

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

  523. 

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

  525.         AV_WN4PA(((pixel4*)(src+i*stride))+0, dc0splat);

  526.         AV_WN4PA(((pixel4*)(src+i*stride))+1, dc1splat);

  527.     }

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

  529.         AV_WN4PA(((pixel4*)(src+i*stride))+0, dc0splat);

  530.         AV_WN4PA(((pixel4*)(src+i*stride))+1, dc1splat);

  531.     }

  532. }

  533. 

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

  535.     int i;

  536.     int dc0, dc1, dc2;

  537.     pixel4 dc0splat, dc1splat, dc2splat, dc3splat;

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

  539.     stride /= sizeof(pixel);

  540. 

  541.     dc0=dc1=dc2=0;

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

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

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

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

  546.     }

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

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

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

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

  551. 

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

  553.         AV_WN4PA(((pixel4*)(src+i*stride))+0, dc0splat);

  554.         AV_WN4PA(((pixel4*)(src+i*stride))+1, dc1splat);

  555.     }

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

  557.         AV_WN4PA(((pixel4*)(src+i*stride))+0, dc2splat);

  558.         AV_WN4PA(((pixel4*)(src+i*stride))+1, dc3splat);

  559.     }

  560. }

  561. 

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

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

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

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

  566. }

  567. 

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

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

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

  571. }

  572. 

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

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

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

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

  577. }

  578. 

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

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

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

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

  583. }

  584. 

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

  586.   int j, k;

  587.   int a;

  588.   INIT_CLIP

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

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

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

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

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

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

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

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

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

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

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

  600.   }

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

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

  603. 

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

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

  606.     int b = a;

  607.     a += V;

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

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

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

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

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

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

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

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

  616.     src += stride;

  617.   }

  618. }

  619. 

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

  621. #define PL(y) \

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

  623. #define PREDICT_8x8_LOAD_LEFT \

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

  625.                      + 2*SRC(-1,0) + SRC(-1,1) + 2) >> 2; \

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

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

  628. 

  629. #define PT(x) \

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

  631. #define PREDICT_8x8_LOAD_TOP \

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

  633.                      + 2*SRC(0,-1) + SRC(1,-1) + 2) >> 2; \

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

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

  636.                      + 2*SRC(7,-1) + SRC(6,-1) + 2) >> 2

  637. 

  638. #define PTR(x) \

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

  640. #define PREDICT_8x8_LOAD_TOPRIGHT \

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

  642.     if(has_topright) { \

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

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

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

  646. 

  647. #define PREDICT_8x8_LOAD_TOPLEFT \

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

  649. 

  650. #define PREDICT_8x8_DC(v) \

  651.     int y; \

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

  653.         AV_WN4PA(((pixel4*)src)+0, v); \

  654.         AV_WN4PA(((pixel4*)src)+1, v); \

  655.         src += stride; \

  656.     }

  657. 

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

  659. {

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

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

  662. 

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

  664. }

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

  666. {

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

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

  669. 

  670.     PREDICT_8x8_LOAD_LEFT;

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

  672.     PREDICT_8x8_DC(dc);

  673. }

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

  675. {

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

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

  678. 

  679.     PREDICT_8x8_LOAD_TOP;

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

  681.     PREDICT_8x8_DC(dc);

  682. }

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

  684. {

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

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

  687. 

  688.     PREDICT_8x8_LOAD_LEFT;

  689.     PREDICT_8x8_LOAD_TOP;

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

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

  692.     PREDICT_8x8_DC(dc);

  693. }

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

  695. {

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

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

  698.     pixel4 a;

  699. 

  700.     PREDICT_8x8_LOAD_LEFT;

  701. #define ROW(y) a = PIXEL_SPLAT_X4(l##y); \

  702.                AV_WN4PA(src+y*stride, a); \

  703.                AV_WN4PA(src+y*stride+4, a);

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

  705. #undef ROW

  706. }

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

  708. {

  709.     int y;

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

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

  712.     pixel4 a, b;

  713. 

  714.     PREDICT_8x8_LOAD_TOP;

  715.     src[0] = t0;

  716.     src[1] = t1;

  717.     src[2] = t2;

  718.     src[3] = t3;

  719.     src[4] = t4;

  720.     src[5] = t5;

  721.     src[6] = t6;

  722.     src[7] = t7;

  723.     a = AV_RN4PA(((pixel4*)src)+0);

  724.     b = AV_RN4PA(((pixel4*)src)+1);

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

  726.         AV_WN4PA(((pixel4*)(src+y*stride))+0, a);

  727.         AV_WN4PA(((pixel4*)(src+y*stride))+1, b);

  728.     }

  729. }

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

  731. {

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

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

  734.     PREDICT_8x8_LOAD_TOP;

  735.     PREDICT_8x8_LOAD_TOPRIGHT;

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

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

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

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

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

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

  742.     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;

  743.     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;

  744.     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;

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

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

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

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

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

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

  751. }

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

  753. {

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

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

  756.     PREDICT_8x8_LOAD_TOP;

  757.     PREDICT_8x8_LOAD_LEFT;

  758.     PREDICT_8x8_LOAD_TOPLEFT;

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

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

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

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

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

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

  765.     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;

  766.     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;

  767.     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;

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

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

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

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

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

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

  774. }

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

  776. {

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

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

  779.     PREDICT_8x8_LOAD_TOP;

  780.     PREDICT_8x8_LOAD_LEFT;

  781.     PREDICT_8x8_LOAD_TOPLEFT;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  804. }

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

  806. {

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

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

  809.     PREDICT_8x8_LOAD_TOP;

  810.     PREDICT_8x8_LOAD_LEFT;

  811.     PREDICT_8x8_LOAD_TOPLEFT;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  834. }

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

  836. {

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

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

  839.     PREDICT_8x8_LOAD_TOP;

  840.     PREDICT_8x8_LOAD_TOPRIGHT;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  863. }

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

  865. {

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

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

  868.     PREDICT_8x8_LOAD_LEFT;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  887. }

  888. #undef PREDICT_8x8_LOAD_LEFT

  889. #undef PREDICT_8x8_LOAD_TOP

  890. #undef PREDICT_8x8_LOAD_TOPLEFT

  891. #undef PREDICT_8x8_LOAD_TOPRIGHT

  892. #undef PREDICT_8x8_DC

  893. #undef PTR

  894. #undef PT

  895. #undef PL

  896. #undef SRC

  897. 

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

  899.     int i;

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

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

  902.     stride /= sizeof(pixel);

  903.     pix -= stride;

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

  905.         pixel v = pix[0];

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

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

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

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

  910.         pix++;

  911.         block++;

  912.     }

  913. }

  914. 

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

  916.     int i;

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

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

  919.     stride /= sizeof(pixel);

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

  921.         pixel v = pix[-1];

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

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

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

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

  926.         pix+= stride;

  927.         block+= 4;

  928.     }

  929. }

  930. 

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

  932.     int i;

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

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

  935.     stride /= sizeof(pixel);

  936.     pix -= stride;

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

  938.         pixel v = pix[0];

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

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

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

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

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

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

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

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

  947.         pix++;

  948.         block++;

  949.     }

  950. }

  951. 

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

  953.     int i;

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

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

  956.     stride /= sizeof(pixel);

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

  958.         pixel v = pix[-1];

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

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

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

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

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

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

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

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

  967.         pix+= stride;

  968.         block+= 8;

  969.     }

  970. }

  971. 

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

  973.     int i;

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

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

  976. }

  977. 

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

  979.     int i;

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

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

  982. }

  983. 

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

  985.     int i;

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

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

  988. }

  989. 

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

  991.     int i;

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

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

  994. }