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FFmpeg/libavcodec/h264_loopfilter.c

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  1. /*

  2.  * H.26L/H.264/AVC/JVT/14496-10/... loop filter

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

  4.  *

  5.  * This file is part of FFmpeg.

  6.  *

  7.  * FFmpeg 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.  * FFmpeg 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 FFmpeg; 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 libavcodec/h264_loopfilter.c

  24.  * H.264 / AVC / MPEG4 part10 loop filter.

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

  26.  */

  27. 

  28. #include "internal.h"

  29. #include "dsputil.h"

  30. #include "avcodec.h"

  31. #include "mpegvideo.h"

  32. #include "h264.h"

  33. #include "mathops.h"

  34. #include "rectangle.h"

  35. 

  36. //#undef NDEBUG

  37. #include <assert.h>

  38. 

  39. /* Deblocking filter (p153) */

  40. static const uint8_t alpha_table[52*3] = {

  41.      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,

  42.      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,

  43.      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,

  44.      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,

  45.      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,

  46.      0,  0,  0,  0,  0,  0,  4,  4,  5,  6,

  47.      7,  8,  9, 10, 12, 13, 15, 17, 20, 22,

  48.     25, 28, 32, 36, 40, 45, 50, 56, 63, 71,

  49.     80, 90,101,113,127,144,162,182,203,226,

  50.    255,255,

  51.    255,255,255,255,255,255,255,255,255,255,255,255,255,

  52.    255,255,255,255,255,255,255,255,255,255,255,255,255,

  53.    255,255,255,255,255,255,255,255,255,255,255,255,255,

  54.    255,255,255,255,255,255,255,255,255,255,255,255,255,

  55. };

  56. static const uint8_t beta_table[52*3] = {

  57.      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,

  58.      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,

  59.      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,

  60.      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,

  61.      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,

  62.      0,  0,  0,  0,  0,  0,  2,  2,  2,  3,

  63.      3,  3,  3,  4,  4,  4,  6,  6,  7,  7,

  64.      8,  8,  9,  9, 10, 10, 11, 11, 12, 12,

  65.     13, 13, 14, 14, 15, 15, 16, 16, 17, 17,

  66.     18, 18,

  67.     18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,

  68.     18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,

  69.     18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,

  70.     18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,

  71. };

  72. static const uint8_t tc0_table[52*3][4] = {

  73.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 },

  74.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 },

  75.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 },

  76.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 },

  77.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 },

  78.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 },

  79.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 },

  80.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 },

  81.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 },

  82.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 },

  83.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 },

  84.     {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 0 }, {-1, 0, 0, 1 },

  85.     {-1, 0, 0, 1 }, {-1, 0, 0, 1 }, {-1, 0, 0, 1 }, {-1, 0, 1, 1 }, {-1, 0, 1, 1 }, {-1, 1, 1, 1 },

  86.     {-1, 1, 1, 1 }, {-1, 1, 1, 1 }, {-1, 1, 1, 1 }, {-1, 1, 1, 2 }, {-1, 1, 1, 2 }, {-1, 1, 1, 2 },

  87.     {-1, 1, 1, 2 }, {-1, 1, 2, 3 }, {-1, 1, 2, 3 }, {-1, 2, 2, 3 }, {-1, 2, 2, 4 }, {-1, 2, 3, 4 },

  88.     {-1, 2, 3, 4 }, {-1, 3, 3, 5 }, {-1, 3, 4, 6 }, {-1, 3, 4, 6 }, {-1, 4, 5, 7 }, {-1, 4, 5, 8 },

  89.     {-1, 4, 6, 9 }, {-1, 5, 7,10 }, {-1, 6, 8,11 }, {-1, 6, 8,13 }, {-1, 7,10,14 }, {-1, 8,11,16 },

  90.     {-1, 9,12,18 }, {-1,10,13,20 }, {-1,11,15,23 }, {-1,13,17,25 },

  91.     {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 },

  92.     {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 },

  93.     {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 },

  94.     {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 },

  95.     {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 },

  96.     {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 },

  97.     {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 },

  98.     {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 },

  99.     {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 }, {-1,13,17,25 },

  100. };

  101. 

  102. static void av_noinline filter_mb_edgev( uint8_t *pix, int stride, int16_t bS[4], unsigned int qp, H264Context *h) {

  103.     const unsigned int index_a = qp + h->slice_alpha_c0_offset;

  104.     const int alpha = alpha_table[index_a];

  105.     const int beta  = beta_table[qp + h->slice_beta_offset];

  106.     if (alpha ==0 || beta == 0) return;

  107. 

  108.     if( bS[0] < 4 ) {

  109.         int8_t tc[4];

  110.         tc[0] = tc0_table[index_a][bS[0]];

  111.         tc[1] = tc0_table[index_a][bS[1]];

  112.         tc[2] = tc0_table[index_a][bS[2]];

  113.         tc[3] = tc0_table[index_a][bS[3]];

  114.         h->s.dsp.h264_h_loop_filter_luma(pix, stride, alpha, beta, tc);

  115.     } else {

  116.         h->s.dsp.h264_h_loop_filter_luma_intra(pix, stride, alpha, beta);

  117.     }

  118. }

  119. static void av_noinline filter_mb_edgecv( uint8_t *pix, int stride, int16_t bS[4], unsigned int qp, H264Context *h ) {

  120.     const unsigned int index_a = qp + h->slice_alpha_c0_offset;

  121.     const int alpha = alpha_table[index_a];

  122.     const int beta  = beta_table[qp + h->slice_beta_offset];

  123.     if (alpha ==0 || beta == 0) return;

  124. 

  125.     if( bS[0] < 4 ) {

  126.         int8_t tc[4];

  127.         tc[0] = tc0_table[index_a][bS[0]]+1;

  128.         tc[1] = tc0_table[index_a][bS[1]]+1;

  129.         tc[2] = tc0_table[index_a][bS[2]]+1;

  130.         tc[3] = tc0_table[index_a][bS[3]]+1;

  131.         h->s.dsp.h264_h_loop_filter_chroma(pix, stride, alpha, beta, tc);

  132.     } else {

  133.         h->s.dsp.h264_h_loop_filter_chroma_intra(pix, stride, alpha, beta);

  134.     }

  135. }

  136. 

  137. static void filter_mb_mbaff_edgev( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int bsi, int qp ) {

  138.     int i;

  139.     int index_a = qp + h->slice_alpha_c0_offset;

  140.     int alpha = alpha_table[index_a];

  141.     int beta  = beta_table[qp + h->slice_beta_offset];

  142.     for( i = 0; i < 8; i++, pix += stride) {

  143.         const int bS_index = (i >> 1) * bsi;

  144. 

  145.         if( bS[bS_index] == 0 ) {

  146.             continue;

  147.         }

  148. 

  149.         if( bS[bS_index] < 4 ) {

  150.             const int tc0 = tc0_table[index_a][bS[bS_index]];

  151.             const int p0 = pix[-1];

  152.             const int p1 = pix[-2];

  153.             const int p2 = pix[-3];

  154.             const int q0 = pix[0];

  155.             const int q1 = pix[1];

  156.             const int q2 = pix[2];

  157. 

  158.             if( FFABS( p0 - q0 ) < alpha &&

  159.                 FFABS( p1 - p0 ) < beta &&

  160.                 FFABS( q1 - q0 ) < beta ) {

  161.                 int tc = tc0;

  162.                 int i_delta;

  163. 

  164.                 if( FFABS( p2 - p0 ) < beta ) {

  165.                     if(tc0)

  166.                     pix[-2] = p1 + av_clip( ( p2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( p1 << 1 ) ) >> 1, -tc0, tc0 );

  167.                     tc++;

  168.                 }

  169.                 if( FFABS( q2 - q0 ) < beta ) {

  170.                     if(tc0)

  171.                     pix[1] = q1 + av_clip( ( q2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( q1 << 1 ) ) >> 1, -tc0, tc0 );

  172.                     tc++;

  173.                 }

  174. 

  175.                 i_delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc );

  176.                 pix[-1] = av_clip_uint8( p0 + i_delta );    /* p0' */

  177.                 pix[0]  = av_clip_uint8( q0 - i_delta );    /* q0' */

  178.                 tprintf(h->s.avctx, "filter_mb_mbaff_edgev i:%d, qp:%d, indexA:%d, alpha:%d, beta:%d, tc:%d\n# bS:%d -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x]\n", i, qp[qp_index], index_a, alpha, beta, tc, bS[bS_index], pix[-3], p1, p0, q0, q1, pix[2], p1, pix[-1], pix[0], q1);

  179.             }

  180.         }else{

  181.             const int p0 = pix[-1];

  182.             const int p1 = pix[-2];

  183.             const int p2 = pix[-3];

  184. 

  185.             const int q0 = pix[0];

  186.             const int q1 = pix[1];

  187.             const int q2 = pix[2];

  188. 

  189.             if( FFABS( p0 - q0 ) < alpha &&

  190.                 FFABS( p1 - p0 ) < beta &&

  191.                 FFABS( q1 - q0 ) < beta ) {

  192. 

  193.                 if(FFABS( p0 - q0 ) < (( alpha >> 2 ) + 2 )){

  194.                     if( FFABS( p2 - p0 ) < beta)

  195.                     {

  196.                         const int p3 = pix[-4];

  197.                         /* p0', p1', p2' */

  198.                         pix[-1] = ( p2 + 2*p1 + 2*p0 + 2*q0 + q1 + 4 ) >> 3;

  199.                         pix[-2] = ( p2 + p1 + p0 + q0 + 2 ) >> 2;

  200.                         pix[-3] = ( 2*p3 + 3*p2 + p1 + p0 + q0 + 4 ) >> 3;

  201.                     } else {

  202.                         /* p0' */

  203.                         pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2;

  204.                     }

  205.                     if( FFABS( q2 - q0 ) < beta)

  206.                     {

  207.                         const int q3 = pix[3];

  208.                         /* q0', q1', q2' */

  209.                         pix[0] = ( p1 + 2*p0 + 2*q0 + 2*q1 + q2 + 4 ) >> 3;

  210.                         pix[1] = ( p0 + q0 + q1 + q2 + 2 ) >> 2;

  211.                         pix[2] = ( 2*q3 + 3*q2 + q1 + q0 + p0 + 4 ) >> 3;

  212.                     } else {

  213.                         /* q0' */

  214.                         pix[0] = ( 2*q1 + q0 + p1 + 2 ) >> 2;

  215.                     }

  216.                 }else{

  217.                     /* p0', q0' */

  218.                     pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2;

  219.                     pix[ 0] = ( 2*q1 + q0 + p1 + 2 ) >> 2;

  220.                 }

  221.                 tprintf(h->s.avctx, "filter_mb_mbaff_edgev i:%d, qp:%d, indexA:%d, alpha:%d, beta:%d\n# bS:4 -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x, %02x, %02x]\n", i, qp[qp_index], index_a, alpha, beta, p2, p1, p0, q0, q1, q2, pix[-3], pix[-2], pix[-1], pix[0], pix[1], pix[2]);

  222.             }

  223.         }

  224.     }

  225. }

  226. static void filter_mb_mbaff_edgecv( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int bsi, int qp ) {

  227.     int i;

  228.     int index_a = qp + h->slice_alpha_c0_offset;

  229.     int alpha = alpha_table[index_a];

  230.     int beta  = beta_table[qp + h->slice_beta_offset];

  231.     for( i = 0; i < 4; i++, pix += stride) {

  232.         const int bS_index = i*bsi;

  233. 

  234.         if( bS[bS_index] == 0 ) {

  235.             continue;

  236.         }

  237. 

  238.         if( bS[bS_index] < 4 ) {

  239.             const int tc = tc0_table[index_a][bS[bS_index]] + 1;

  240.             const int p0 = pix[-1];

  241.             const int p1 = pix[-2];

  242.             const int q0 = pix[0];

  243.             const int q1 = pix[1];

  244. 

  245.             if( FFABS( p0 - q0 ) < alpha &&

  246.                 FFABS( p1 - p0 ) < beta &&

  247.                 FFABS( q1 - q0 ) < beta ) {

  248.                 const int i_delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc );

  249. 

  250.                 pix[-1] = av_clip_uint8( p0 + i_delta );    /* p0' */

  251.                 pix[0]  = av_clip_uint8( q0 - i_delta );    /* q0' */

  252.                 tprintf(h->s.avctx, "filter_mb_mbaff_edgecv i:%d, qp:%d, indexA:%d, alpha:%d, beta:%d, tc:%d\n# bS:%d -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x]\n", i, qp[qp_index], index_a, alpha, beta, tc, bS[bS_index], pix[-3], p1, p0, q0, q1, pix[2], p1, pix[-1], pix[0], q1);

  253.             }

  254.         }else{

  255.             const int p0 = pix[-1];

  256.             const int p1 = pix[-2];

  257.             const int q0 = pix[0];

  258.             const int q1 = pix[1];

  259. 

  260.             if( FFABS( p0 - q0 ) < alpha &&

  261.                 FFABS( p1 - p0 ) < beta &&

  262.                 FFABS( q1 - q0 ) < beta ) {

  263. 

  264.                 pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2;   /* p0' */

  265.                 pix[0]  = ( 2*q1 + q0 + p1 + 2 ) >> 2;   /* q0' */

  266.                 tprintf(h->s.avctx, "filter_mb_mbaff_edgecv i:%d\n# bS:4 -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x, %02x, %02x]\n", i, pix[-3], p1, p0, q0, q1, pix[2], pix[-3], pix[-2], pix[-1], pix[0], pix[1], pix[2]);

  267.             }

  268.         }

  269.     }

  270. }

  271. 

  272. static void av_noinline filter_mb_edgeh( uint8_t *pix, int stride, int16_t bS[4], unsigned int qp, H264Context *h ) {

  273.     const unsigned int index_a = qp + h->slice_alpha_c0_offset;

  274.     const int alpha = alpha_table[index_a];

  275.     const int beta  = beta_table[qp + h->slice_beta_offset];

  276.     if (alpha ==0 || beta == 0) return;

  277. 

  278.     if( bS[0] < 4 ) {

  279.         int8_t tc[4];

  280.         tc[0] = tc0_table[index_a][bS[0]];

  281.         tc[1] = tc0_table[index_a][bS[1]];

  282.         tc[2] = tc0_table[index_a][bS[2]];

  283.         tc[3] = tc0_table[index_a][bS[3]];

  284.         h->s.dsp.h264_v_loop_filter_luma(pix, stride, alpha, beta, tc);

  285.     } else {

  286.         h->s.dsp.h264_v_loop_filter_luma_intra(pix, stride, alpha, beta);

  287.     }

  288. }

  289. 

  290. static void av_noinline filter_mb_edgech( uint8_t *pix, int stride, int16_t bS[4], unsigned int qp, H264Context *h ) {

  291.     const unsigned int index_a = qp + h->slice_alpha_c0_offset;

  292.     const int alpha = alpha_table[index_a];

  293.     const int beta  = beta_table[qp + h->slice_beta_offset];

  294.     if (alpha ==0 || beta == 0) return;

  295. 

  296.     if( bS[0] < 4 ) {

  297.         int8_t tc[4];

  298.         tc[0] = tc0_table[index_a][bS[0]]+1;

  299.         tc[1] = tc0_table[index_a][bS[1]]+1;

  300.         tc[2] = tc0_table[index_a][bS[2]]+1;

  301.         tc[3] = tc0_table[index_a][bS[3]]+1;

  302.         h->s.dsp.h264_v_loop_filter_chroma(pix, stride, alpha, beta, tc);

  303.     } else {

  304.         h->s.dsp.h264_v_loop_filter_chroma_intra(pix, stride, alpha, beta);

  305.     }

  306. }

  307. 

  308. void ff_h264_filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize) {

  309.     MpegEncContext * const s = &h->s;

  310.     int mb_y_firstrow = s->picture_structure == PICT_BOTTOM_FIELD;

  311.     int mb_xy, mb_type;

  312.     int qp, qp0, qp1, qpc, qpc0, qpc1, qp_thresh;

  313. 

  314.     mb_xy = h->mb_xy;

  315. 

  316.     if(mb_x==0 || mb_y==mb_y_firstrow || !s->dsp.h264_loop_filter_strength || h->pps.chroma_qp_diff ||

  317.        (h->deblocking_filter == 2 && (h->slice_num != h->slice_table[h->top_mb_xy] ||

  318.                                       h->slice_num != h->slice_table[mb_xy - 1]))) {

  319.         ff_h264_filter_mb(h, mb_x, mb_y, img_y, img_cb, img_cr, linesize, uvlinesize);

  320.         return;

  321.     }

  322.     assert(!FRAME_MBAFF);

  323. 

  324.     mb_type = s->current_picture.mb_type[mb_xy];

  325.     qp = s->current_picture.qscale_table[mb_xy];

  326.     qp0 = s->current_picture.qscale_table[mb_xy-1];

  327.     qp1 = s->current_picture.qscale_table[h->top_mb_xy];

  328.     qpc = get_chroma_qp( h, 0, qp );

  329.     qpc0 = get_chroma_qp( h, 0, qp0 );

  330.     qpc1 = get_chroma_qp( h, 0, qp1 );

  331.     qp0 = (qp + qp0 + 1) >> 1;

  332.     qp1 = (qp + qp1 + 1) >> 1;

  333.     qpc0 = (qpc + qpc0 + 1) >> 1;

  334.     qpc1 = (qpc + qpc1 + 1) >> 1;

  335.     qp_thresh = 15+52 - h->slice_alpha_c0_offset;

  336.     if(qp <= qp_thresh && qp0 <= qp_thresh && qp1 <= qp_thresh &&

  337.        qpc <= qp_thresh && qpc0 <= qp_thresh && qpc1 <= qp_thresh)

  338.         return;

  339. 

  340.     if( IS_INTRA(mb_type) ) {

  341.         int16_t bS4[4] = {4,4,4,4};

  342.         int16_t bS3[4] = {3,3,3,3};

  343.         int16_t *bSH = FIELD_PICTURE ? bS3 : bS4;

  344.         if( IS_8x8DCT(mb_type) ) {

  345.             filter_mb_edgev( &img_y[4*0], linesize, bS4, qp0, h);

  346.             filter_mb_edgev( &img_y[4*2], linesize, bS3, qp, h);

  347.             filter_mb_edgeh( &img_y[4*0*linesize], linesize, bSH, qp1, h);

  348.             filter_mb_edgeh( &img_y[4*2*linesize], linesize, bS3, qp, h);

  349.         } else {

  350.             filter_mb_edgev( &img_y[4*0], linesize, bS4, qp0, h);

  351.             filter_mb_edgev( &img_y[4*1], linesize, bS3, qp, h);

  352.             filter_mb_edgev( &img_y[4*2], linesize, bS3, qp, h);

  353.             filter_mb_edgev( &img_y[4*3], linesize, bS3, qp, h);

  354.             filter_mb_edgeh( &img_y[4*0*linesize], linesize, bSH, qp1, h);

  355.             filter_mb_edgeh( &img_y[4*1*linesize], linesize, bS3, qp, h);

  356.             filter_mb_edgeh( &img_y[4*2*linesize], linesize, bS3, qp, h);

  357.             filter_mb_edgeh( &img_y[4*3*linesize], linesize, bS3, qp, h);

  358.         }

  359.         filter_mb_edgecv( &img_cb[2*0], uvlinesize, bS4, qpc0, h);

  360.         filter_mb_edgecv( &img_cb[2*2], uvlinesize, bS3, qpc, h);

  361.         filter_mb_edgecv( &img_cr[2*0], uvlinesize, bS4, qpc0, h);

  362.         filter_mb_edgecv( &img_cr[2*2], uvlinesize, bS3, qpc, h);

  363.         filter_mb_edgech( &img_cb[2*0*uvlinesize], uvlinesize, bSH, qpc1, h);

  364.         filter_mb_edgech( &img_cb[2*2*uvlinesize], uvlinesize, bS3, qpc, h);

  365.         filter_mb_edgech( &img_cr[2*0*uvlinesize], uvlinesize, bSH, qpc1, h);

  366.         filter_mb_edgech( &img_cr[2*2*uvlinesize], uvlinesize, bS3, qpc, h);

  367.         return;

  368.     } else {

  369.         DECLARE_ALIGNED_8(int16_t, bS)[2][4][4];

  370.         uint64_t (*bSv)[4] = (uint64_t(*)[4])bS;

  371.         int edges;

  372.         if( IS_8x8DCT(mb_type) && (h->cbp&7) == 7 ) {

  373.             edges = 4;

  374.             bSv[0][0] = bSv[0][2] = bSv[1][0] = bSv[1][2] = 0x0002000200020002ULL;

  375.         } else {

  376.             int mask_edge1 = (mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16)) ? 3 :

  377.                              (mb_type & MB_TYPE_16x8) ? 1 : 0;

  378.             int mask_edge0 = (mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16))

  379.                              && (s->current_picture.mb_type[mb_xy-1] & (MB_TYPE_16x16 | MB_TYPE_8x16))

  380.                              ? 3 : 0;

  381.             int step = IS_8x8DCT(mb_type) ? 2 : 1;

  382.             edges = (mb_type & MB_TYPE_16x16) && !(h->cbp & 15) ? 1 : 4;

  383.             s->dsp.h264_loop_filter_strength( bS, h->non_zero_count_cache, h->ref_cache, h->mv_cache,

  384.                                               h->list_count==2, edges, step, mask_edge0, mask_edge1, FIELD_PICTURE);

  385.         }

  386.         if( IS_INTRA(s->current_picture.mb_type[mb_xy-1]) )

  387.             bSv[0][0] = 0x0004000400040004ULL;

  388.         if( IS_INTRA(s->current_picture.mb_type[h->top_mb_xy]) )

  389.             bSv[1][0] = FIELD_PICTURE ? 0x0003000300030003ULL : 0x0004000400040004ULL;

  390. 

  391. #define FILTER(hv,dir,edge)\

  392.         if(bSv[dir][edge]) {\

  393.             filter_mb_edge##hv( &img_y[4*edge*(dir?linesize:1)], linesize, bS[dir][edge], edge ? qp : qp##dir, h );\

  394.             if(!(edge&1)) {\

  395.                 filter_mb_edgec##hv( &img_cb[2*edge*(dir?uvlinesize:1)], uvlinesize, bS[dir][edge], edge ? qpc : qpc##dir, h );\

  396.                 filter_mb_edgec##hv( &img_cr[2*edge*(dir?uvlinesize:1)], uvlinesize, bS[dir][edge], edge ? qpc : qpc##dir, h );\

  397.             }\

  398.         }

  399.         if( edges == 1 ) {

  400.             FILTER(v,0,0);

  401.             FILTER(h,1,0);

  402.         } else if( IS_8x8DCT(mb_type) ) {

  403.             FILTER(v,0,0);

  404.             FILTER(v,0,2);

  405.             FILTER(h,1,0);

  406.             FILTER(h,1,2);

  407.         } else {

  408.             FILTER(v,0,0);

  409.             FILTER(v,0,1);

  410.             FILTER(v,0,2);

  411.             FILTER(v,0,3);

  412.             FILTER(h,1,0);

  413.             FILTER(h,1,1);

  414.             FILTER(h,1,2);

  415.             FILTER(h,1,3);

  416.         }

  417. #undef FILTER

  418.     }

  419. }

  420. 

  421. 

  422. static av_always_inline void filter_mb_dir(H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize, int mb_xy, int mb_type, int mvy_limit, int first_vertical_edge_done, int dir) {

  423.     MpegEncContext * const s = &h->s;

  424.     int edge;

  425.     const int mbm_xy = dir == 0 ? mb_xy -1 : h->top_mb_xy;

  426.     const int mbm_type = s->current_picture.mb_type[mbm_xy];

  427. 

  428.     // how often to recheck mv-based bS when iterating between edges

  429.     static const uint8_t mask_edge_tab[2][8]={{0,3,3,3,1,1,1,1},

  430.                                               {0,3,1,1,3,3,3,3}};

  431.     const int mask_edge = mask_edge_tab[dir][(mb_type>>3)&7];

  432.     const int edges = mask_edge== 3 && !(h->cbp&15) ? 1 : 4;

  433. 

  434.     // how often to recheck mv-based bS when iterating along each edge

  435.     const int mask_par0 = mb_type & (MB_TYPE_16x16 | (MB_TYPE_8x16 >> dir));

  436.     int start =   h->slice_table[mbm_xy] == 0xFFFF

  437.                || first_vertical_edge_done

  438.                || (h->deblocking_filter==2 && h->slice_table[mbm_xy] != h->slice_num);

  439. 

  440. 

  441.     if (FRAME_MBAFF && (dir == 1) && ((mb_y&1) == 0) && start == 0

  442.         && IS_INTERLACED(mbm_type&~mb_type)

  443.         ) {

  444.         // This is a special case in the norm where the filtering must

  445.         // be done twice (one each of the field) even if we are in a

  446.         // frame macroblock.

  447.         //

  448.         unsigned int tmp_linesize   = 2 *   linesize;

  449.         unsigned int tmp_uvlinesize = 2 * uvlinesize;

  450.         int mbn_xy = mb_xy - 2 * s->mb_stride;

  451.         int j;

  452. 

  453.         for(j=0; j<2; j++, mbn_xy += s->mb_stride){

  454.             DECLARE_ALIGNED_8(int16_t, bS)[4];

  455.             int qp;

  456.             if( IS_INTRA(mb_type|s->current_picture.mb_type[mbn_xy]) ) {

  457.                 *(uint64_t*)bS= 0x0003000300030003ULL;

  458.             } else {

  459.                 const uint8_t *mbn_nnz = h->non_zero_count[mbn_xy] + 4+3*8;

  460.                 int i;

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

  462.                     bS[i] = 1 + !!(h->non_zero_count_cache[scan8[0]+i] | mbn_nnz[i]);

  463.                 }

  464.             }

  465.             // Do not use s->qscale as luma quantizer because it has not the same

  466.             // value in IPCM macroblocks.

  467.             qp = ( s->current_picture.qscale_table[mb_xy] + s->current_picture.qscale_table[mbn_xy] + 1 ) >> 1;

  468.             tprintf(s->avctx, "filter mb:%d/%d dir:%d edge:%d, QPy:%d ls:%d uvls:%d", mb_x, mb_y, dir, edge, qp, tmp_linesize, tmp_uvlinesize);

  469.             { int i; for (i = 0; i < 4; i++) tprintf(s->avctx, " bS[%d]:%d", i, bS[i]); tprintf(s->avctx, "\n"); }

  470.             filter_mb_edgeh( &img_y[j*linesize], tmp_linesize, bS, qp, h );

  471.             filter_mb_edgech( &img_cb[j*uvlinesize], tmp_uvlinesize, bS,

  472.                               ( h->chroma_qp[0] + get_chroma_qp( h, 0, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1, h);

  473.             filter_mb_edgech( &img_cr[j*uvlinesize], tmp_uvlinesize, bS,

  474.                               ( h->chroma_qp[1] + get_chroma_qp( h, 1, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1, h);

  475.         }

  476. 

  477.         start = 1;

  478.     }

  479. 

  480.     /* Calculate bS */

  481.     for( edge = start; edge < edges; edge++ ) {

  482.         /* mbn_xy: neighbor macroblock */

  483.         const int mbn_xy = edge > 0 ? mb_xy : mbm_xy;

  484.         const int mbn_type = s->current_picture.mb_type[mbn_xy];

  485.         DECLARE_ALIGNED_8(int16_t, bS)[4];

  486.         int qp;

  487. 

  488.         if( IS_8x8DCT(mb_type & (edge<<24)) ) // (edge&1) && IS_8x8DCT(mb_type)

  489.             continue;

  490. 

  491.         if( IS_INTRA(mb_type|mbn_type)) {

  492.             *(uint64_t*)bS= 0x0003000300030003ULL;

  493.             if (edge == 0) {

  494.                 if (   (!IS_INTERLACED(mb_type|mbm_type))

  495.                     || ((FRAME_MBAFF || (s->picture_structure != PICT_FRAME)) && (dir == 0))

  496.                 )

  497.                     *(uint64_t*)bS= 0x0004000400040004ULL;

  498.             }

  499.         } else {

  500.             int i, l;

  501.             int mv_done;

  502. 

  503.             if( edge & mask_edge ) {

  504.                 *(uint64_t*)bS= 0;

  505.                 mv_done = 1;

  506.             }

  507.             else if( FRAME_MBAFF && IS_INTERLACED(mb_type ^ mbn_type)) {

  508.                 *(uint64_t*)bS= 0x0001000100010001ULL;

  509.                 mv_done = 1;

  510.             }

  511.             else if( mask_par0 && (edge || (mbn_type & (MB_TYPE_16x16 | (MB_TYPE_8x16 >> dir)))) ) {

  512.                 int b_idx= 8 + 4 + edge * (dir ? 8:1);

  513.                 int bn_idx= b_idx - (dir ? 8:1);

  514.                 int v = 0;

  515. 

  516.                 for( l = 0; !v && l < h->list_count; l++ ) {

  517.                     v |= h->ref_cache[l][b_idx] != h->ref_cache[l][bn_idx] |

  518.                          h->mv_cache[l][b_idx][0] - h->mv_cache[l][bn_idx][0] + 3 >= 7U |

  519.                          FFABS( h->mv_cache[l][b_idx][1] - h->mv_cache[l][bn_idx][1] ) >= mvy_limit;

  520.                 }

  521. 

  522.                 if(h->list_count==2 && v){

  523.                     v=0;

  524.                     for( l = 0; !v && l < 2; l++ ) {

  525.                         int ln= 1-l;

  526.                         v |= h->ref_cache[l][b_idx] != h->ref_cache[ln][bn_idx] |

  527.                             h->mv_cache[l][b_idx][0] - h->mv_cache[ln][bn_idx][0] + 3 >= 7U |

  528.                             FFABS( h->mv_cache[l][b_idx][1] - h->mv_cache[ln][bn_idx][1] ) >= mvy_limit;

  529.                     }

  530.                 }

  531. 

  532.                 bS[0] = bS[1] = bS[2] = bS[3] = v;

  533.                 mv_done = 1;

  534.             }

  535.             else

  536.                 mv_done = 0;

  537. 

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

  539.                 int x = dir == 0 ? edge : i;

  540.                 int y = dir == 0 ? i    : edge;

  541.                 int b_idx= 8 + 4 + x + 8*y;

  542.                 int bn_idx= b_idx - (dir ? 8:1);

  543. 

  544.                 if( h->non_zero_count_cache[b_idx] |

  545.                     h->non_zero_count_cache[bn_idx] ) {

  546.                     bS[i] = 2;

  547.                 }

  548.                 else if(!mv_done)

  549.                 {

  550.                     bS[i] = 0;

  551.                     for( l = 0; l < h->list_count; l++ ) {

  552.                         if( h->ref_cache[l][b_idx] != h->ref_cache[l][bn_idx] |

  553.                             h->mv_cache[l][b_idx][0] - h->mv_cache[l][bn_idx][0] + 3 >= 7U |

  554.                             FFABS( h->mv_cache[l][b_idx][1] - h->mv_cache[l][bn_idx][1] ) >= mvy_limit ) {

  555.                             bS[i] = 1;

  556.                             break;

  557.                         }

  558.                     }

  559. 

  560.                     if(h->list_count == 2 && bS[i]){

  561.                         bS[i] = 0;

  562.                         for( l = 0; l < 2; l++ ) {

  563.                             int ln= 1-l;

  564.                             if( h->ref_cache[l][b_idx] != h->ref_cache[ln][bn_idx] |

  565.                                 h->mv_cache[l][b_idx][0] - h->mv_cache[ln][bn_idx][0] + 3 >= 7U |

  566.                                 FFABS( h->mv_cache[l][b_idx][1] - h->mv_cache[ln][bn_idx][1] ) >= mvy_limit ) {

  567.                                 bS[i] = 1;

  568.                                 break;

  569.                             }

  570.                         }

  571.                     }

  572.                 }

  573.             }

  574. 

  575.             if(bS[0]+bS[1]+bS[2]+bS[3] == 0)

  576.                 continue;

  577.         }

  578. 

  579.         /* Filter edge */

  580.         // Do not use s->qscale as luma quantizer because it has not the same

  581.         // value in IPCM macroblocks.

  582.         qp = ( s->current_picture.qscale_table[mb_xy] + s->current_picture.qscale_table[mbn_xy] + 1 ) >> 1;

  583.         //tprintf(s->avctx, "filter mb:%d/%d dir:%d edge:%d, QPy:%d, QPc:%d, QPcn:%d\n", mb_x, mb_y, dir, edge, qp, h->chroma_qp[0], s->current_picture.qscale_table[mbn_xy]);

  584.         tprintf(s->avctx, "filter mb:%d/%d dir:%d edge:%d, QPy:%d ls:%d uvls:%d", mb_x, mb_y, dir, edge, qp, linesize, uvlinesize);

  585.         //{ int i; for (i = 0; i < 4; i++) tprintf(s->avctx, " bS[%d]:%d", i, bS[i]); tprintf(s->avctx, "\n"); }

  586.         if( dir == 0 ) {

  587.             filter_mb_edgev( &img_y[4*edge], linesize, bS, qp, h );

  588.             if( (edge&1) == 0 ) {

  589.                 int qp= ( h->chroma_qp[0] + get_chroma_qp( h, 0, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1;

  590.                 filter_mb_edgecv( &img_cb[2*edge], uvlinesize, bS, qp, h);

  591.                 if(h->pps.chroma_qp_diff)

  592.                     qp= ( h->chroma_qp[1] + get_chroma_qp( h, 1, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1;

  593.                 filter_mb_edgecv( &img_cr[2*edge], uvlinesize, bS, qp, h);

  594.             }

  595.         } else {

  596.             filter_mb_edgeh( &img_y[4*edge*linesize], linesize, bS, qp, h );

  597.             if( (edge&1) == 0 ) {

  598.                 int qp= ( h->chroma_qp[0] + get_chroma_qp( h, 0, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1;

  599.                 filter_mb_edgech( &img_cb[2*edge*uvlinesize], uvlinesize, bS, qp, h);

  600.                 if(h->pps.chroma_qp_diff)

  601.                     qp= ( h->chroma_qp[1] + get_chroma_qp( h, 1, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1;

  602.                 filter_mb_edgech( &img_cr[2*edge*uvlinesize], uvlinesize, bS, qp, h);

  603.             }

  604.         }

  605.     }

  606. }

  607. 

  608. void ff_h264_filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize) {

  609.     MpegEncContext * const s = &h->s;

  610.     const int mb_xy= mb_x + mb_y*s->mb_stride;

  611.     const int mb_type = s->current_picture.mb_type[mb_xy];

  612.     const int mvy_limit = IS_INTERLACED(mb_type) ? 2 : 4;

  613.     int first_vertical_edge_done = 0;

  614.     av_unused int dir;

  615.     int list;

  616. 

  617.     if (FRAME_MBAFF

  618.             // left mb is in picture

  619.             && h->slice_table[mb_xy-1] != 0xFFFF

  620.             // and current and left pair do not have the same interlaced type

  621.             && IS_INTERLACED(mb_type^s->current_picture.mb_type[mb_xy-1])

  622.             // and left mb is in the same slice if deblocking_filter == 2

  623.             && (h->deblocking_filter!=2 || h->slice_table[mb_xy-1] == h->slice_num)) {

  624.         /* First vertical edge is different in MBAFF frames

  625.          * There are 8 different bS to compute and 2 different Qp

  626.          */

  627.         const int pair_xy = mb_x + (mb_y&~1)*s->mb_stride;

  628.         const int left_mb_xy[2] = { pair_xy-1, pair_xy-1+s->mb_stride };

  629.         DECLARE_ALIGNED_8(int16_t, bS)[8];

  630.         int qp[2];

  631.         int bqp[2];

  632.         int rqp[2];

  633.         int mb_qp, mbn0_qp, mbn1_qp;

  634.         int i;

  635.         first_vertical_edge_done = 1;

  636. 

  637.         if( IS_INTRA(mb_type) )

  638.             *(uint64_t*)&bS[0]=

  639.             *(uint64_t*)&bS[4]= 0x0004000400040004ULL;

  640.         else {

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

  642.                 int mbn_xy = MB_FIELD ? left_mb_xy[i>>2] : left_mb_xy[i&1];

  643. 

  644.                 if( IS_INTRA( s->current_picture.mb_type[mbn_xy] ) )

  645.                     bS[i] = 4;

  646.                 else if( h->non_zero_count_cache[12+8*(i>>1)] != 0 ||

  647.                          ((!h->pps.cabac && IS_8x8DCT(s->current_picture.mb_type[mbn_xy])) ?

  648.                             (h->cbp_table[mbn_xy] & ((MB_FIELD ? (i&2) : (mb_y&1)) ? 8 : 2))

  649.                                                                        :

  650.                             h->non_zero_count[mbn_xy][7+(MB_FIELD ? (i&3) : (i>>2)+(mb_y&1)*2)*8]))

  651.                     bS[i] = 2;

  652.                 else

  653.                     bS[i] = 1;

  654.             }

  655.         }

  656. 

  657.         mb_qp = s->current_picture.qscale_table[mb_xy];

  658.         mbn0_qp = s->current_picture.qscale_table[left_mb_xy[0]];

  659.         mbn1_qp = s->current_picture.qscale_table[left_mb_xy[1]];

  660.         qp[0] = ( mb_qp + mbn0_qp + 1 ) >> 1;

  661.         bqp[0] = ( get_chroma_qp( h, 0, mb_qp ) +

  662.                    get_chroma_qp( h, 0, mbn0_qp ) + 1 ) >> 1;

  663.         rqp[0] = ( get_chroma_qp( h, 1, mb_qp ) +

  664.                    get_chroma_qp( h, 1, mbn0_qp ) + 1 ) >> 1;

  665.         qp[1] = ( mb_qp + mbn1_qp + 1 ) >> 1;

  666.         bqp[1] = ( get_chroma_qp( h, 0, mb_qp ) +

  667.                    get_chroma_qp( h, 0, mbn1_qp ) + 1 ) >> 1;

  668.         rqp[1] = ( get_chroma_qp( h, 1, mb_qp ) +

  669.                    get_chroma_qp( h, 1, mbn1_qp ) + 1 ) >> 1;

  670. 

  671.         /* Filter edge */

  672.         tprintf(s->avctx, "filter mb:%d/%d MBAFF, QPy:%d/%d, QPb:%d/%d QPr:%d/%d ls:%d uvls:%d", mb_x, mb_y, qp[0], qp[1], bqp[0], bqp[1], rqp[0], rqp[1], linesize, uvlinesize);

  673.         { int i; for (i = 0; i < 8; i++) tprintf(s->avctx, " bS[%d]:%d", i, bS[i]); tprintf(s->avctx, "\n"); }

  674.         if(MB_FIELD){

  675.             filter_mb_mbaff_edgev ( h, img_y                ,   linesize, bS  , 1, qp [0] );

  676.             filter_mb_mbaff_edgev ( h, img_y  + 8*  linesize,   linesize, bS+4, 1, qp [1] );

  677.             filter_mb_mbaff_edgecv( h, img_cb,                uvlinesize, bS  , 1, bqp[0] );

  678.             filter_mb_mbaff_edgecv( h, img_cb + 4*uvlinesize, uvlinesize, bS+4, 1, bqp[1] );

  679.             filter_mb_mbaff_edgecv( h, img_cr,                uvlinesize, bS  , 1, rqp[0] );

  680.             filter_mb_mbaff_edgecv( h, img_cr + 4*uvlinesize, uvlinesize, bS+4, 1, rqp[1] );

  681.         }else{

  682.             filter_mb_mbaff_edgev ( h, img_y              , 2*  linesize, bS  , 2, qp [0] );

  683.             filter_mb_mbaff_edgev ( h, img_y  +   linesize, 2*  linesize, bS+1, 2, qp [1] );

  684.             filter_mb_mbaff_edgecv( h, img_cb,              2*uvlinesize, bS  , 2, bqp[0] );

  685.             filter_mb_mbaff_edgecv( h, img_cb + uvlinesize, 2*uvlinesize, bS+1, 2, bqp[1] );

  686.             filter_mb_mbaff_edgecv( h, img_cr,              2*uvlinesize, bS  , 2, rqp[0] );

  687.             filter_mb_mbaff_edgecv( h, img_cr + uvlinesize, 2*uvlinesize, bS+1, 2, rqp[1] );

  688.         }

  689.     }

  690. 

  691. #if CONFIG_SMALL

  692.     for( dir = 0; dir < 2; dir++ )

  693.         filter_mb_dir(h, mb_x, mb_y, img_y, img_cb, img_cr, linesize, uvlinesize, mb_xy, mb_type, mvy_limit, dir ? 0 : first_vertical_edge_done, dir);

  694. #else

  695.     filter_mb_dir(h, mb_x, mb_y, img_y, img_cb, img_cr, linesize, uvlinesize, mb_xy, mb_type, mvy_limit, first_vertical_edge_done, 0);

  696.     filter_mb_dir(h, mb_x, mb_y, img_y, img_cb, img_cr, linesize, uvlinesize, mb_xy, mb_type, mvy_limit, 0, 1);

  697. #endif

  698. }