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FFmpeg/libavcodec/h264dsp_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 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

  24.  * H.264 / AVC / MPEG-4 part10 DSP functions.

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

  26.  */

  27. 

  28. #include "bit_depth_template.c"

  29. 

  30. #define op_scale1(x)  block[x] = av_clip_pixel( (block[x]*weight + offset) >> log2_denom )

  31. #define op_scale2(x)  dst[x] = av_clip_pixel( (src[x]*weights + dst[x]*weightd + offset) >> (log2_denom+1))

  32. #define H264_WEIGHT(W) \

  33. static void FUNCC(weight_h264_pixels ## W)(uint8_t *_block, int stride, int height, \

  34.                                            int log2_denom, int weight, int offset) \

  35. { \

  36.     int y; \

  37.     pixel *block = (pixel*)_block; \

  38.     stride >>= sizeof(pixel)-1; \

  39.     offset = (unsigned)offset << (log2_denom + (BIT_DEPTH-8)); \

  40.     if(log2_denom) offset += 1<<(log2_denom-1); \

  41.     for (y = 0; y < height; y++, block += stride) { \

  42.         op_scale1(0); \

  43.         op_scale1(1); \

  44.         if(W==2) continue; \

  45.         op_scale1(2); \

  46.         op_scale1(3); \

  47.         if(W==4) continue; \

  48.         op_scale1(4); \

  49.         op_scale1(5); \

  50.         op_scale1(6); \

  51.         op_scale1(7); \

  52.         if(W==8) continue; \

  53.         op_scale1(8); \

  54.         op_scale1(9); \

  55.         op_scale1(10); \

  56.         op_scale1(11); \

  57.         op_scale1(12); \

  58.         op_scale1(13); \

  59.         op_scale1(14); \

  60.         op_scale1(15); \

  61.     } \

  62. } \

  63. static void FUNCC(biweight_h264_pixels ## W)(uint8_t *_dst, uint8_t *_src, int stride, int height, \

  64.                                              int log2_denom, int weightd, int weights, int offset) \

  65. { \

  66.     int y; \

  67.     pixel *dst = (pixel*)_dst; \

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

  69.     stride >>= sizeof(pixel)-1; \

  70.     offset = (unsigned)offset << (BIT_DEPTH-8); \

  71.     offset = (unsigned)((offset + 1) | 1) << log2_denom; \

  72.     for (y = 0; y < height; y++, dst += stride, src += stride) { \

  73.         op_scale2(0); \

  74.         op_scale2(1); \

  75.         if(W==2) continue; \

  76.         op_scale2(2); \

  77.         op_scale2(3); \

  78.         if(W==4) continue; \

  79.         op_scale2(4); \

  80.         op_scale2(5); \

  81.         op_scale2(6); \

  82.         op_scale2(7); \

  83.         if(W==8) continue; \

  84.         op_scale2(8); \

  85.         op_scale2(9); \

  86.         op_scale2(10); \

  87.         op_scale2(11); \

  88.         op_scale2(12); \

  89.         op_scale2(13); \

  90.         op_scale2(14); \

  91.         op_scale2(15); \

  92.     } \

  93. }

  94. 

  95. H264_WEIGHT(16)

  96. H264_WEIGHT(8)

  97. H264_WEIGHT(4)

  98. H264_WEIGHT(2)

  99. 

  100. #undef op_scale1

  101. #undef op_scale2

  102. #undef H264_WEIGHT

  103. 

  104. static av_always_inline av_flatten void FUNCC(h264_loop_filter_luma)(uint8_t *p_pix, int xstride, int ystride, int inner_iters, int alpha, int beta, int8_t *tc0)

  105. {

  106.     pixel *pix = (pixel*)p_pix;

  107.     int i, d;

  108.     xstride >>= sizeof(pixel)-1;

  109.     ystride >>= sizeof(pixel)-1;

  110.     alpha <<= BIT_DEPTH - 8;

  111.     beta  <<= BIT_DEPTH - 8;

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

  113.         const int tc_orig = tc0[i] * (1 << (BIT_DEPTH - 8));

  114.         if( tc_orig < 0 ) {

  115.             pix += inner_iters*ystride;

  116.             continue;

  117.         }

  118.         for( d = 0; d < inner_iters; d++ ) {

  119.             const int p0 = pix[-1*xstride];

  120.             const int p1 = pix[-2*xstride];

  121.             const int p2 = pix[-3*xstride];

  122.             const int q0 = pix[0];

  123.             const int q1 = pix[1*xstride];

  124.             const int q2 = pix[2*xstride];

  125. 

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

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

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

  129. 

  130.                 int tc = tc_orig;

  131.                 int i_delta;

  132. 

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

  134.                     if(tc_orig)

  135.                     pix[-2*xstride] = p1 + av_clip( (( p2 + ( ( p0 + q0 + 1 ) >> 1 ) ) >> 1) - p1, -tc_orig, tc_orig );

  136.                     tc++;

  137.                 }

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

  139.                     if(tc_orig)

  140.                     pix[   xstride] = q1 + av_clip( (( q2 + ( ( p0 + q0 + 1 ) >> 1 ) ) >> 1) - q1, -tc_orig, tc_orig );

  141.                     tc++;

  142.                 }

  143. 

  144.                 i_delta = av_clip( (((q0 - p0 ) * 4) + (p1 - q1) + 4) >> 3, -tc, tc );

  145.                 pix[-xstride] = av_clip_pixel( p0 + i_delta );    /* p0' */

  146.                 pix[0]        = av_clip_pixel( q0 - i_delta );    /* q0' */

  147.             }

  148.             pix += ystride;

  149.         }

  150.     }

  151. }

  152. static void FUNCC(h264_v_loop_filter_luma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)

  153. {

  154.     FUNCC(h264_loop_filter_luma)(pix, stride, sizeof(pixel), 4, alpha, beta, tc0);

  155. }

  156. static void FUNCC(h264_h_loop_filter_luma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)

  157. {

  158.     FUNCC(h264_loop_filter_luma)(pix, sizeof(pixel), stride, 4, alpha, beta, tc0);

  159. }

  160. static void FUNCC(h264_h_loop_filter_luma_mbaff)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)

  161. {

  162.     FUNCC(h264_loop_filter_luma)(pix, sizeof(pixel), stride, 2, alpha, beta, tc0);

  163. }

  164. 

  165. static av_always_inline av_flatten void FUNCC(h264_loop_filter_luma_intra)(uint8_t *p_pix, int xstride, int ystride, int inner_iters, int alpha, int beta)

  166. {

  167.     pixel *pix = (pixel*)p_pix;

  168.     int d;

  169.     xstride >>= sizeof(pixel)-1;

  170.     ystride >>= sizeof(pixel)-1;

  171.     alpha <<= BIT_DEPTH - 8;

  172.     beta  <<= BIT_DEPTH - 8;

  173.     for( d = 0; d < 4 * inner_iters; d++ ) {

  174.         const int p2 = pix[-3*xstride];

  175.         const int p1 = pix[-2*xstride];

  176.         const int p0 = pix[-1*xstride];

  177. 

  178.         const int q0 = pix[ 0*xstride];

  179.         const int q1 = pix[ 1*xstride];

  180.         const int q2 = pix[ 2*xstride];

  181. 

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

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

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

  185. 

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

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

  188.                 {

  189.                     const int p3 = pix[-4*xstride];

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

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

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

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

  194.                 } else {

  195.                     /* p0' */

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

  197.                 }

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

  199.                 {

  200.                     const int q3 = pix[3*xstride];

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

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

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

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

  205.                 } else {

  206.                     /* q0' */

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

  208.                 }

  209.             }else{

  210.                 /* p0', q0' */

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

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

  213.             }

  214.         }

  215.         pix += ystride;

  216.     }

  217. }

  218. static void FUNCC(h264_v_loop_filter_luma_intra)(uint8_t *pix, int stride, int alpha, int beta)

  219. {

  220.     FUNCC(h264_loop_filter_luma_intra)(pix, stride, sizeof(pixel), 4, alpha, beta);

  221. }

  222. static void FUNCC(h264_h_loop_filter_luma_intra)(uint8_t *pix, int stride, int alpha, int beta)

  223. {

  224.     FUNCC(h264_loop_filter_luma_intra)(pix, sizeof(pixel), stride, 4, alpha, beta);

  225. }

  226. static void FUNCC(h264_h_loop_filter_luma_mbaff_intra)(uint8_t *pix, int stride, int alpha, int beta)

  227. {

  228.     FUNCC(h264_loop_filter_luma_intra)(pix, sizeof(pixel), stride, 2, alpha, beta);

  229. }

  230. 

  231. static av_always_inline av_flatten void FUNCC(h264_loop_filter_chroma)(uint8_t *p_pix, int xstride, int ystride, int inner_iters, int alpha, int beta, int8_t *tc0)

  232. {

  233.     pixel *pix = (pixel*)p_pix;

  234.     int i, d;

  235.     alpha <<= BIT_DEPTH - 8;

  236.     beta  <<= BIT_DEPTH - 8;

  237.     xstride >>= sizeof(pixel)-1;

  238.     ystride >>= sizeof(pixel)-1;

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

  240.         const int tc = ((tc0[i] - 1U) << (BIT_DEPTH - 8)) + 1;

  241.         if( tc <= 0 ) {

  242.             pix += inner_iters*ystride;

  243.             continue;

  244.         }

  245.         for( d = 0; d < inner_iters; d++ ) {

  246.             const int p0 = pix[-1*xstride];

  247.             const int p1 = pix[-2*xstride];

  248.             const int q0 = pix[0];

  249.             const int q1 = pix[1*xstride];

  250. 

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

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

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

  254. 

  255.                 int delta = av_clip( ((q0 - p0) * 4 + (p1 - q1) + 4) >> 3, -tc, tc );

  256. 

  257.                 pix[-xstride] = av_clip_pixel( p0 + delta );    /* p0' */

  258.                 pix[0]        = av_clip_pixel( q0 - delta );    /* q0' */

  259.             }

  260.             pix += ystride;

  261.         }

  262.     }

  263. }

  264. static void FUNCC(h264_v_loop_filter_chroma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)

  265. {

  266.     FUNCC(h264_loop_filter_chroma)(pix, stride, sizeof(pixel), 2, alpha, beta, tc0);

  267. }

  268. static void FUNCC(h264_h_loop_filter_chroma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)

  269. {

  270.     FUNCC(h264_loop_filter_chroma)(pix, sizeof(pixel), stride, 2, alpha, beta, tc0);

  271. }

  272. static void FUNCC(h264_h_loop_filter_chroma_mbaff)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)

  273. {

  274.     FUNCC(h264_loop_filter_chroma)(pix, sizeof(pixel), stride, 1, alpha, beta, tc0);

  275. }

  276. static void FUNCC(h264_h_loop_filter_chroma422)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)

  277. {

  278.     FUNCC(h264_loop_filter_chroma)(pix, sizeof(pixel), stride, 4, alpha, beta, tc0);

  279. }

  280. static void FUNCC(h264_h_loop_filter_chroma422_mbaff)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0)

  281. {

  282.     FUNCC(h264_loop_filter_chroma)(pix, sizeof(pixel), stride, 2, alpha, beta, tc0);

  283. }

  284. 

  285. static av_always_inline av_flatten void FUNCC(h264_loop_filter_chroma_intra)(uint8_t *p_pix, int xstride, int ystride, int inner_iters, int alpha, int beta)

  286. {

  287.     pixel *pix = (pixel*)p_pix;

  288.     int d;

  289.     xstride >>= sizeof(pixel)-1;

  290.     ystride >>= sizeof(pixel)-1;

  291.     alpha <<= BIT_DEPTH - 8;

  292.     beta  <<= BIT_DEPTH - 8;

  293.     for( d = 0; d < 4 * inner_iters; d++ ) {

  294.         const int p0 = pix[-1*xstride];

  295.         const int p1 = pix[-2*xstride];

  296.         const int q0 = pix[0];

  297.         const int q1 = pix[1*xstride];

  298. 

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

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

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

  302. 

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

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

  305.         }

  306.         pix += ystride;

  307.     }

  308. }

  309. static void FUNCC(h264_v_loop_filter_chroma_intra)(uint8_t *pix, int stride, int alpha, int beta)

  310. {

  311.     FUNCC(h264_loop_filter_chroma_intra)(pix, stride, sizeof(pixel), 2, alpha, beta);

  312. }

  313. static void FUNCC(h264_h_loop_filter_chroma_intra)(uint8_t *pix, int stride, int alpha, int beta)

  314. {

  315.     FUNCC(h264_loop_filter_chroma_intra)(pix, sizeof(pixel), stride, 2, alpha, beta);

  316. }

  317. static void FUNCC(h264_h_loop_filter_chroma_mbaff_intra)(uint8_t *pix, int stride, int alpha, int beta)

  318. {

  319.     FUNCC(h264_loop_filter_chroma_intra)(pix, sizeof(pixel), stride, 1, alpha, beta);

  320. }

  321. static void FUNCC(h264_h_loop_filter_chroma422_intra)(uint8_t *pix, int stride, int alpha, int beta)

  322. {

  323.     FUNCC(h264_loop_filter_chroma_intra)(pix, sizeof(pixel), stride, 4, alpha, beta);

  324. }

  325. static void FUNCC(h264_h_loop_filter_chroma422_mbaff_intra)(uint8_t *pix, int stride, int alpha, int beta)

  326. {

  327.     FUNCC(h264_loop_filter_chroma_intra)(pix, sizeof(pixel), stride, 2, alpha, beta);

  328. }