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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 "dsputil.h"

  30. 

  31. static void pred4x4_vertical_c(uint8_t *src, const uint8_t *topright, int stride){

  32.     const uint32_t a= ((uint32_t*)(src-stride))[0];

  33.     ((uint32_t*)(src+0*stride))[0]= a;

  34.     ((uint32_t*)(src+1*stride))[0]= a;

  35.     ((uint32_t*)(src+2*stride))[0]= a;

  36.     ((uint32_t*)(src+3*stride))[0]= a;

  37. }

  38. 

  39. static void pred4x4_horizontal_c(uint8_t *src, const uint8_t *topright, int stride){

  40.     ((uint32_t*)(src+0*stride))[0]= src[-1+0*stride]*0x01010101;

  41.     ((uint32_t*)(src+1*stride))[0]= src[-1+1*stride]*0x01010101;

  42.     ((uint32_t*)(src+2*stride))[0]= src[-1+2*stride]*0x01010101;

  43.     ((uint32_t*)(src+3*stride))[0]= src[-1+3*stride]*0x01010101;

  44. }

  45. 

  46. static void pred4x4_dc_c(uint8_t *src, const uint8_t *topright, int stride){

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

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

  49. 

  50.     ((uint32_t*)(src+0*stride))[0]=

  51.     ((uint32_t*)(src+1*stride))[0]=

  52.     ((uint32_t*)(src+2*stride))[0]=

  53.     ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;

  54. }

  55. 

  56. static void pred4x4_left_dc_c(uint8_t *src, const uint8_t *topright, int stride){

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

  58. 

  59.     ((uint32_t*)(src+0*stride))[0]=

  60.     ((uint32_t*)(src+1*stride))[0]=

  61.     ((uint32_t*)(src+2*stride))[0]=

  62.     ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;

  63. }

  64. 

  65. static void pred4x4_top_dc_c(uint8_t *src, const uint8_t *topright, int stride){

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

  67. 

  68.     ((uint32_t*)(src+0*stride))[0]=

  69.     ((uint32_t*)(src+1*stride))[0]=

  70.     ((uint32_t*)(src+2*stride))[0]=

  71.     ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;

  72. }

  73. 

  74. static void pred4x4_128_dc_c(uint8_t *src, const uint8_t *topright, int stride){

  75.     ((uint32_t*)(src+0*stride))[0]=

  76.     ((uint32_t*)(src+1*stride))[0]=

  77.     ((uint32_t*)(src+2*stride))[0]=

  78.     ((uint32_t*)(src+3*stride))[0]= 128U*0x01010101U;

  79. }

  80. 

  81. static void pred4x4_127_dc_c(uint8_t *src, const uint8_t *topright, int stride){

  82.     ((uint32_t*)(src+0*stride))[0]=

  83.     ((uint32_t*)(src+1*stride))[0]=

  84.     ((uint32_t*)(src+2*stride))[0]=

  85.     ((uint32_t*)(src+3*stride))[0]= 127U*0x01010101U;

  86. }

  87. 

  88. static void pred4x4_129_dc_c(uint8_t *src, const uint8_t *topright, int stride){

  89.     ((uint32_t*)(src+0*stride))[0]=

  90.     ((uint32_t*)(src+1*stride))[0]=

  91.     ((uint32_t*)(src+2*stride))[0]=

  92.     ((uint32_t*)(src+3*stride))[0]= 129U*0x01010101U;

  93. }

  94. 

  95. 

  96. #define LOAD_TOP_RIGHT_EDGE\

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

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

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

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

  101. 

  102. #define LOAD_DOWN_LEFT_EDGE\

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

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

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

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

  107. 

  108. #define LOAD_LEFT_EDGE\

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

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

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

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

  113. 

  114. #define LOAD_TOP_EDGE\

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

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

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

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

  119. 

  120. static void pred4x4_down_right_c(uint8_t *src, const uint8_t *topright, int stride){

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

  122.     LOAD_TOP_EDGE

  123.     LOAD_LEFT_EDGE

  124. 

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

  126.     src[0+2*stride]=

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

  128.     src[0+1*stride]=

  129.     src[1+2*stride]=

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

  131.     src[0+0*stride]=

  132.     src[1+1*stride]=

  133.     src[2+2*stride]=

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

  135.     src[1+0*stride]=

  136.     src[2+1*stride]=

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

  138.     src[2+0*stride]=

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

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

  141. }

  142. 

  143. static void pred4x4_down_left_c(uint8_t *src, const uint8_t *topright, int stride){

  144.     LOAD_TOP_EDGE

  145.     LOAD_TOP_RIGHT_EDGE

  146. //    LOAD_LEFT_EDGE

  147. 

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

  149.     src[1+0*stride]=

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

  151.     src[2+0*stride]=

  152.     src[1+1*stride]=

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

  154.     src[3+0*stride]=

  155.     src[2+1*stride]=

  156.     src[1+2*stride]=

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

  158.     src[3+1*stride]=

  159.     src[2+2*stride]=

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

  161.     src[3+2*stride]=

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

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

  164. }

  165. 

  166. static void pred4x4_vertical_right_c(uint8_t *src, const uint8_t *topright, int stride){

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

  168.     LOAD_TOP_EDGE

  169.     LOAD_LEFT_EDGE

  170. 

  171.     src[0+0*stride]=

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

  173.     src[1+0*stride]=

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

  175.     src[2+0*stride]=

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

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

  178.     src[0+1*stride]=

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

  180.     src[1+1*stride]=

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

  182.     src[2+1*stride]=

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

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

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

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

  187. }

  188. 

  189. static void pred4x4_vertical_left_c(uint8_t *src, const uint8_t *topright, int stride){

  190.     LOAD_TOP_EDGE

  191.     LOAD_TOP_RIGHT_EDGE

  192. 

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

  194.     src[1+0*stride]=

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

  196.     src[2+0*stride]=

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

  198.     src[3+0*stride]=

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

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

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

  202.     src[1+1*stride]=

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

  204.     src[2+1*stride]=

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

  206.     src[3+1*stride]=

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

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

  209. }

  210. 

  211. static void pred4x4_horizontal_up_c(uint8_t *src, const uint8_t *topright, int stride){

  212.     LOAD_LEFT_EDGE

  213. 

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

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

  216.     src[2+0*stride]=

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

  218.     src[3+0*stride]=

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

  220.     src[2+1*stride]=

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

  222.     src[3+1*stride]=

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

  224.     src[3+2*stride]=

  225.     src[1+3*stride]=

  226.     src[0+3*stride]=

  227.     src[2+2*stride]=

  228.     src[2+3*stride]=

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

  230. }

  231. 

  232. static void pred4x4_horizontal_down_c(uint8_t *src, const uint8_t *topright, int stride){

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

  234.     LOAD_TOP_EDGE

  235.     LOAD_LEFT_EDGE

  236. 

  237.     src[0+0*stride]=

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

  239.     src[1+0*stride]=

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

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

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

  243.     src[0+1*stride]=

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

  245.     src[1+1*stride]=

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

  247.     src[0+2*stride]=

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

  249.     src[1+2*stride]=

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

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

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

  253. }

  254. 

  255. static void pred16x16_vertical_c(uint8_t *src, int stride){

  256.     int i;

  257.     const uint32_t a= ((uint32_t*)(src-stride))[0];

  258.     const uint32_t b= ((uint32_t*)(src-stride))[1];

  259.     const uint32_t c= ((uint32_t*)(src-stride))[2];

  260.     const uint32_t d= ((uint32_t*)(src-stride))[3];

  261. 

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

  263.         ((uint32_t*)(src+i*stride))[0]= a;

  264.         ((uint32_t*)(src+i*stride))[1]= b;

  265.         ((uint32_t*)(src+i*stride))[2]= c;

  266.         ((uint32_t*)(src+i*stride))[3]= d;

  267.     }

  268. }

  269. 

  270. static void pred16x16_horizontal_c(uint8_t *src, int stride){

  271.     int i;

  272. 

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

  274.         ((uint32_t*)(src+i*stride))[0]=

  275.         ((uint32_t*)(src+i*stride))[1]=

  276.         ((uint32_t*)(src+i*stride))[2]=

  277.         ((uint32_t*)(src+i*stride))[3]= src[-1+i*stride]*0x01010101;

  278.     }

  279. }

  280. 

  281. static void pred16x16_dc_c(uint8_t *src, int stride){

  282.     int i, dc=0;

  283. 

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

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

  286.     }

  287. 

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

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

  290.     }

  291. 

  292.     dc= 0x01010101*((dc + 16)>>5);

  293. 

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

  295.         ((uint32_t*)(src+i*stride))[0]=

  296.         ((uint32_t*)(src+i*stride))[1]=

  297.         ((uint32_t*)(src+i*stride))[2]=

  298.         ((uint32_t*)(src+i*stride))[3]= dc;

  299.     }

  300. }

  301. 

  302. static void pred16x16_left_dc_c(uint8_t *src, int stride){

  303.     int i, dc=0;

  304. 

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

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

  307.     }

  308. 

  309.     dc= 0x01010101*((dc + 8)>>4);

  310. 

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

  312.         ((uint32_t*)(src+i*stride))[0]=

  313.         ((uint32_t*)(src+i*stride))[1]=

  314.         ((uint32_t*)(src+i*stride))[2]=

  315.         ((uint32_t*)(src+i*stride))[3]= dc;

  316.     }

  317. }

  318. 

  319. static void pred16x16_top_dc_c(uint8_t *src, int stride){

  320.     int i, dc=0;

  321. 

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

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

  324.     }

  325.     dc= 0x01010101*((dc + 8)>>4);

  326. 

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

  328.         ((uint32_t*)(src+i*stride))[0]=

  329.         ((uint32_t*)(src+i*stride))[1]=

  330.         ((uint32_t*)(src+i*stride))[2]=

  331.         ((uint32_t*)(src+i*stride))[3]= dc;

  332.     }

  333. }

  334. 

  335. static void pred16x16_128_dc_c(uint8_t *src, int stride){

  336.     int i;

  337. 

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

  339.         ((uint32_t*)(src+i*stride))[0]=

  340.         ((uint32_t*)(src+i*stride))[1]=

  341.         ((uint32_t*)(src+i*stride))[2]=

  342.         ((uint32_t*)(src+i*stride))[3]= 0x01010101U*128U;

  343.     }

  344. }

  345. 

  346. static void pred16x16_127_dc_c(uint8_t *src, int stride){

  347.     int i;

  348. 

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

  350.         ((uint32_t*)(src+i*stride))[0]=

  351.         ((uint32_t*)(src+i*stride))[1]=

  352.         ((uint32_t*)(src+i*stride))[2]=

  353.         ((uint32_t*)(src+i*stride))[3]= 0x01010101U*127U;

  354.     }

  355. }

  356. 

  357. static void pred16x16_129_dc_c(uint8_t *src, int stride){

  358.     int i;

  359. 

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

  361.         ((uint32_t*)(src+i*stride))[0]=

  362.         ((uint32_t*)(src+i*stride))[1]=

  363.         ((uint32_t*)(src+i*stride))[2]=

  364.         ((uint32_t*)(src+i*stride))[3]= 0x01010101U*129U;

  365.     }

  366. }

  367. 

  368. static inline void pred16x16_plane_compat_c(uint8_t *src, int stride, const int svq3, const int rv40){

  369.   int i, j, k;

  370.   int a;

  371.   uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;

  372.   const uint8_t * const src0 = src+7-stride;

  373.   const uint8_t *src1 = src+8*stride-1;

  374.   const uint8_t *src2 = src1-2*stride;      // == src+6*stride-1;

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

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

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

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

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

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

  381.   }

  382.   if(svq3){

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

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

  385. 

  386.     /* required for 100% accuracy */

  387.     i = H; H = V; V = i;

  388.   }else if(rv40){

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

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

  391.   }else{

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

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

  394.   }

  395. 

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

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

  398.     int b = a;

  399.     a += V;

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

  401.       src[16+i] = cm[ (b    ) >> 5 ];

  402.       src[17+i] = cm[ (b+  H) >> 5 ];

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

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

  405.       b += 4*H;

  406.     }

  407.     src += stride;

  408.   }

  409. }

  410. 

  411. static void pred16x16_plane_c(uint8_t *src, int stride){

  412.     pred16x16_plane_compat_c(src, stride, 0, 0);

  413. }

  414. 

  415. static void pred8x8_vertical_c(uint8_t *src, int stride){

  416.     int i;

  417.     const uint32_t a= ((uint32_t*)(src-stride))[0];

  418.     const uint32_t b= ((uint32_t*)(src-stride))[1];

  419. 

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

  421.         ((uint32_t*)(src+i*stride))[0]= a;

  422.         ((uint32_t*)(src+i*stride))[1]= b;

  423.     }

  424. }

  425. 

  426. static void pred8x8_horizontal_c(uint8_t *src, int stride){

  427.     int i;

  428. 

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

  430.         ((uint32_t*)(src+i*stride))[0]=

  431.         ((uint32_t*)(src+i*stride))[1]= src[-1+i*stride]*0x01010101;

  432.     }

  433. }

  434. 

  435. static void pred8x8_128_dc_c(uint8_t *src, int stride){

  436.     int i;

  437. 

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

  439.         ((uint32_t*)(src+i*stride))[0]=

  440.         ((uint32_t*)(src+i*stride))[1]= 0x01010101U*128U;

  441.     }

  442. }

  443. 

  444. static void pred8x8_127_dc_c(uint8_t *src, int stride){

  445.     int i;

  446. 

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

  448.         ((uint32_t*)(src+i*stride))[0]=

  449.         ((uint32_t*)(src+i*stride))[1]= 0x01010101U*127U;

  450.     }

  451. }

  452. static void pred8x8_129_dc_c(uint8_t *src, int stride){

  453.     int i;

  454. 

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

  456.         ((uint32_t*)(src+i*stride))[0]=

  457.         ((uint32_t*)(src+i*stride))[1]= 0x01010101U*129U;

  458.     }

  459. }

  460. 

  461. static void pred8x8_left_dc_c(uint8_t *src, int stride){

  462.     int i;

  463.     int dc0, dc2;

  464. 

  465.     dc0=dc2=0;

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

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

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

  469.     }

  470.     dc0= 0x01010101*((dc0 + 2)>>2);

  471.     dc2= 0x01010101*((dc2 + 2)>>2);

  472. 

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

  474.         ((uint32_t*)(src+i*stride))[0]=

  475.         ((uint32_t*)(src+i*stride))[1]= dc0;

  476.     }

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

  478.         ((uint32_t*)(src+i*stride))[0]=

  479.         ((uint32_t*)(src+i*stride))[1]= dc2;

  480.     }

  481. }

  482. 

  483. static void pred8x8_top_dc_c(uint8_t *src, int stride){

  484.     int i;

  485.     int dc0, dc1;

  486. 

  487.     dc0=dc1=0;

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

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

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

  491.     }

  492.     dc0= 0x01010101*((dc0 + 2)>>2);

  493.     dc1= 0x01010101*((dc1 + 2)>>2);

  494. 

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

  496.         ((uint32_t*)(src+i*stride))[0]= dc0;

  497.         ((uint32_t*)(src+i*stride))[1]= dc1;

  498.     }

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

  500.         ((uint32_t*)(src+i*stride))[0]= dc0;

  501.         ((uint32_t*)(src+i*stride))[1]= dc1;

  502.     }

  503. }

  504. 

  505. static void pred8x8_dc_c(uint8_t *src, int stride){

  506.     int i;

  507.     int dc0, dc1, dc2, dc3;

  508. 

  509.     dc0=dc1=dc2=0;

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

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

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

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

  514.     }

  515.     dc3= 0x01010101*((dc1 + dc2 + 4)>>3);

  516.     dc0= 0x01010101*((dc0 + 4)>>3);

  517.     dc1= 0x01010101*((dc1 + 2)>>2);

  518.     dc2= 0x01010101*((dc2 + 2)>>2);

  519. 

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

  521.         ((uint32_t*)(src+i*stride))[0]= dc0;

  522.         ((uint32_t*)(src+i*stride))[1]= dc1;

  523.     }

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

  525.         ((uint32_t*)(src+i*stride))[0]= dc2;

  526.         ((uint32_t*)(src+i*stride))[1]= dc3;

  527.     }

  528. }

  529. 

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

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

  532.     pred8x8_top_dc_c(src, stride);

  533.     pred4x4_dc_c(src, NULL, stride);

  534. }

  535. 

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

  537.     pred8x8_dc_c(src, stride);

  538.     pred4x4_top_dc_c(src, NULL, stride);

  539. }

  540. 

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

  542.     pred8x8_left_dc_c(src, stride);

  543.     pred4x4_128_dc_c(src + 4*stride    , NULL, stride);

  544.     pred4x4_128_dc_c(src + 4*stride + 4, NULL, stride);

  545. }

  546. 

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

  548.     pred8x8_left_dc_c(src, stride);

  549.     pred4x4_128_dc_c(src    , NULL, stride);

  550.     pred4x4_128_dc_c(src + 4, NULL, stride);

  551. }

  552. 

  553. static void pred8x8_plane_c(uint8_t *src, int stride){

  554.   int j, k;

  555.   int a;

  556.   uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;

  557.   const uint8_t * const src0 = src+3-stride;

  558.   const uint8_t *src1 = src+4*stride-1;

  559.   const uint8_t *src2 = src1-2*stride;      // == src+2*stride-1;

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

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

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

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

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

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

  566.   }

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

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

  569. 

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

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

  572.     int b = a;

  573.     a += V;

  574.     src[0] = cm[ (b    ) >> 5 ];

  575.     src[1] = cm[ (b+  H) >> 5 ];

  576.     src[2] = cm[ (b+2*H) >> 5 ];

  577.     src[3] = cm[ (b+3*H) >> 5 ];

  578.     src[4] = cm[ (b+4*H) >> 5 ];

  579.     src[5] = cm[ (b+5*H) >> 5 ];

  580.     src[6] = cm[ (b+6*H) >> 5 ];

  581.     src[7] = cm[ (b+7*H) >> 5 ];

  582.     src += stride;

  583.   }

  584. }

  585. 

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

  587. #define PL(y) \

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

  589. #define PREDICT_8x8_LOAD_LEFT \

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

  591.                      + 2*SRC(-1,0) + SRC(-1,1) + 2) >> 2; \

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

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

  594. 

  595. #define PT(x) \

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

  597. #define PREDICT_8x8_LOAD_TOP \

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

  599.                      + 2*SRC(0,-1) + SRC(1,-1) + 2) >> 2; \

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

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

  602.                      + 2*SRC(7,-1) + SRC(6,-1) + 2) >> 2

  603. 

  604. #define PTR(x) \

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

  606. #define PREDICT_8x8_LOAD_TOPRIGHT \

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

  608.     if(has_topright) { \

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

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

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

  612. 

  613. #define PREDICT_8x8_LOAD_TOPLEFT \

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

  615. 

  616. #define PREDICT_8x8_DC(v) \

  617.     int y; \

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

  619.         ((uint32_t*)src)[0] = \

  620.         ((uint32_t*)src)[1] = v; \

  621.         src += stride; \

  622.     }

  623. 

  624. static void pred8x8l_128_dc_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  625. {

  626.     PREDICT_8x8_DC(0x80808080);

  627. }

  628. static void pred8x8l_left_dc_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  629. {

  630.     PREDICT_8x8_LOAD_LEFT;

  631.     const uint32_t dc = ((l0+l1+l2+l3+l4+l5+l6+l7+4) >> 3) * 0x01010101;

  632.     PREDICT_8x8_DC(dc);

  633. }

  634. static void pred8x8l_top_dc_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  635. {

  636.     PREDICT_8x8_LOAD_TOP;

  637.     const uint32_t dc = ((t0+t1+t2+t3+t4+t5+t6+t7+4) >> 3) * 0x01010101;

  638.     PREDICT_8x8_DC(dc);

  639. }

  640. static void pred8x8l_dc_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  641. {

  642.     PREDICT_8x8_LOAD_LEFT;

  643.     PREDICT_8x8_LOAD_TOP;

  644.     const uint32_t dc = ((l0+l1+l2+l3+l4+l5+l6+l7

  645.                          +t0+t1+t2+t3+t4+t5+t6+t7+8) >> 4) * 0x01010101;

  646.     PREDICT_8x8_DC(dc);

  647. }

  648. static void pred8x8l_horizontal_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  649. {

  650.     PREDICT_8x8_LOAD_LEFT;

  651. #define ROW(y) ((uint32_t*)(src+y*stride))[0] =\

  652.                ((uint32_t*)(src+y*stride))[1] = 0x01010101 * l##y

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

  654. #undef ROW

  655. }

  656. static void pred8x8l_vertical_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  657. {

  658.     int y;

  659.     PREDICT_8x8_LOAD_TOP;

  660.     src[0] = t0;

  661.     src[1] = t1;

  662.     src[2] = t2;

  663.     src[3] = t3;

  664.     src[4] = t4;

  665.     src[5] = t5;

  666.     src[6] = t6;

  667.     src[7] = t7;

  668.     for( y = 1; y < 8; y++ )

  669.         *(uint64_t*)(src+y*stride) = *(uint64_t*)src;

  670. }

  671. static void pred8x8l_down_left_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  672. {

  673.     PREDICT_8x8_LOAD_TOP;

  674.     PREDICT_8x8_LOAD_TOPRIGHT;

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

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

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

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

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

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

  681.     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;

  682.     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;

  683.     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;

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

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

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

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

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

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

  690. }

  691. static void pred8x8l_down_right_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  692. {

  693.     PREDICT_8x8_LOAD_TOP;

  694.     PREDICT_8x8_LOAD_LEFT;

  695.     PREDICT_8x8_LOAD_TOPLEFT;

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

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

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

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

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

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

  702.     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;

  703.     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;

  704.     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;

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

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

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

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

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

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

  711. 

  712. }

  713. static void pred8x8l_vertical_right_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  714. {

  715.     PREDICT_8x8_LOAD_TOP;

  716.     PREDICT_8x8_LOAD_LEFT;

  717.     PREDICT_8x8_LOAD_TOPLEFT;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  740. }

  741. static void pred8x8l_horizontal_down_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  742. {

  743.     PREDICT_8x8_LOAD_TOP;

  744.     PREDICT_8x8_LOAD_LEFT;

  745.     PREDICT_8x8_LOAD_TOPLEFT;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  768. }

  769. static void pred8x8l_vertical_left_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  770. {

  771.     PREDICT_8x8_LOAD_TOP;

  772.     PREDICT_8x8_LOAD_TOPRIGHT;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  795. }

  796. static void pred8x8l_horizontal_up_c(uint8_t *src, int has_topleft, int has_topright, int stride)

  797. {

  798.     PREDICT_8x8_LOAD_LEFT;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  817. }

  818. #undef PREDICT_8x8_LOAD_LEFT

  819. #undef PREDICT_8x8_LOAD_TOP

  820. #undef PREDICT_8x8_LOAD_TOPLEFT

  821. #undef PREDICT_8x8_LOAD_TOPRIGHT

  822. #undef PREDICT_8x8_DC

  823. #undef PTR

  824. #undef PT

  825. #undef PL

  826. #undef SRC

  827. 

  828. static void pred4x4_vertical_add_c(uint8_t *pix, const DCTELEM *block, int stride){

  829.     int i;

  830.     pix -= stride;

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

  832.         uint8_t v = pix[0];

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

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

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

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

  837.         pix++;

  838.         block++;

  839.     }

  840. }

  841. 

  842. static void pred4x4_horizontal_add_c(uint8_t *pix, const DCTELEM *block, int stride){

  843.     int i;

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

  845.         uint8_t v = pix[-1];

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

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

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

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

  850.         pix+= stride;

  851.         block+= 4;

  852.     }

  853. }

  854. 

  855. static void pred8x8l_vertical_add_c(uint8_t *pix, const DCTELEM *block, int stride){

  856.     int i;

  857.     pix -= stride;

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

  859.         uint8_t v = pix[0];

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

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

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

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

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

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

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

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

  868.         pix++;

  869.         block++;

  870.     }

  871. }

  872. 

  873. static void pred8x8l_horizontal_add_c(uint8_t *pix, const DCTELEM *block, int stride){

  874.     int i;

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

  876.         uint8_t v = pix[-1];

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

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

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

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

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

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

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

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

  885.         pix+= stride;

  886.         block+= 8;

  887.     }

  888. }

  889. 

  890. static void pred16x16_vertical_add_c(uint8_t *pix, const int *block_offset, const DCTELEM *block, int stride){

  891.     int i;

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

  893.         pred4x4_vertical_add_c(pix + block_offset[i], block + i*16, stride);

  894. }

  895. 

  896. static void pred16x16_horizontal_add_c(uint8_t *pix, const int *block_offset, const DCTELEM *block, int stride){

  897.     int i;

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

  899.         pred4x4_horizontal_add_c(pix + block_offset[i], block + i*16, stride);

  900. }

  901. 

  902. static void pred8x8_vertical_add_c(uint8_t *pix, const int *block_offset, const DCTELEM *block, int stride){

  903.     int i;

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

  905.         pred4x4_vertical_add_c(pix + block_offset[i], block + i*16, stride);

  906. }

  907. 

  908. static void pred8x8_horizontal_add_c(uint8_t *pix, const int *block_offset, const DCTELEM *block, int stride){

  909.     int i;

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

  911.         pred4x4_horizontal_add_c(pix + block_offset[i], block + i*16, stride);

  912. }