Libav 0.7.1
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00001 /* 00002 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder 00003 * Copyright (c) 2003-2010 Michael Niedermayer <michaelni@gmx.at> 00004 * 00005 * This file is part of Libav. 00006 * 00007 * Libav is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * Libav is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with Libav; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00028 #include "high_bit_depth.h" 00029 00030 #define op_scale1(x) block[x] = av_clip_pixel( (block[x]*weight + offset) >> log2_denom ) 00031 #define op_scale2(x) dst[x] = av_clip_pixel( (src[x]*weights + dst[x]*weightd + offset) >> (log2_denom+1)) 00032 #define H264_WEIGHT(W,H) \ 00033 static void FUNCC(weight_h264_pixels ## W ## x ## H)(uint8_t *_block, int stride, int log2_denom, int weight, int offset){ \ 00034 int y; \ 00035 pixel *block = (pixel*)_block; \ 00036 stride /= sizeof(pixel); \ 00037 offset <<= (log2_denom + (BIT_DEPTH-8)); \ 00038 if(log2_denom) offset += 1<<(log2_denom-1); \ 00039 for(y=0; y<H; y++, block += stride){ \ 00040 op_scale1(0); \ 00041 op_scale1(1); \ 00042 if(W==2) continue; \ 00043 op_scale1(2); \ 00044 op_scale1(3); \ 00045 if(W==4) continue; \ 00046 op_scale1(4); \ 00047 op_scale1(5); \ 00048 op_scale1(6); \ 00049 op_scale1(7); \ 00050 if(W==8) continue; \ 00051 op_scale1(8); \ 00052 op_scale1(9); \ 00053 op_scale1(10); \ 00054 op_scale1(11); \ 00055 op_scale1(12); \ 00056 op_scale1(13); \ 00057 op_scale1(14); \ 00058 op_scale1(15); \ 00059 } \ 00060 } \ 00061 static void FUNCC(biweight_h264_pixels ## W ## x ## H)(uint8_t *_dst, uint8_t *_src, int stride, int log2_denom, int weightd, int weights, int offset){ \ 00062 int y; \ 00063 pixel *dst = (pixel*)_dst; \ 00064 pixel *src = (pixel*)_src; \ 00065 stride /= sizeof(pixel); \ 00066 offset <<= (BIT_DEPTH-8); \ 00067 offset = ((offset + 1) | 1) << log2_denom; \ 00068 for(y=0; y<H; y++, dst += stride, src += stride){ \ 00069 op_scale2(0); \ 00070 op_scale2(1); \ 00071 if(W==2) continue; \ 00072 op_scale2(2); \ 00073 op_scale2(3); \ 00074 if(W==4) continue; \ 00075 op_scale2(4); \ 00076 op_scale2(5); \ 00077 op_scale2(6); \ 00078 op_scale2(7); \ 00079 if(W==8) continue; \ 00080 op_scale2(8); \ 00081 op_scale2(9); \ 00082 op_scale2(10); \ 00083 op_scale2(11); \ 00084 op_scale2(12); \ 00085 op_scale2(13); \ 00086 op_scale2(14); \ 00087 op_scale2(15); \ 00088 } \ 00089 } 00090 00091 H264_WEIGHT(16,16) 00092 H264_WEIGHT(16,8) 00093 H264_WEIGHT(8,16) 00094 H264_WEIGHT(8,8) 00095 H264_WEIGHT(8,4) 00096 H264_WEIGHT(4,8) 00097 H264_WEIGHT(4,4) 00098 H264_WEIGHT(4,2) 00099 H264_WEIGHT(2,4) 00100 H264_WEIGHT(2,2) 00101 00102 #undef op_scale1 00103 #undef op_scale2 00104 #undef H264_WEIGHT 00105 00106 static av_always_inline av_flatten void FUNCC(h264_loop_filter_luma)(uint8_t *_pix, int xstride, int ystride, int inner_iters, int alpha, int beta, int8_t *tc0) 00107 { 00108 pixel *pix = (pixel*)_pix; 00109 int i, d; 00110 xstride /= sizeof(pixel); 00111 ystride /= sizeof(pixel); 00112 alpha <<= BIT_DEPTH - 8; 00113 beta <<= BIT_DEPTH - 8; 00114 for( i = 0; i < 4; i++ ) { 00115 const int tc_orig = tc0[i] << (BIT_DEPTH - 8); 00116 if( tc_orig < 0 ) { 00117 pix += inner_iters*ystride; 00118 continue; 00119 } 00120 for( d = 0; d < inner_iters; d++ ) { 00121 const int p0 = pix[-1*xstride]; 00122 const int p1 = pix[-2*xstride]; 00123 const int p2 = pix[-3*xstride]; 00124 const int q0 = pix[0]; 00125 const int q1 = pix[1*xstride]; 00126 const int q2 = pix[2*xstride]; 00127 00128 if( FFABS( p0 - q0 ) < alpha && 00129 FFABS( p1 - p0 ) < beta && 00130 FFABS( q1 - q0 ) < beta ) { 00131 00132 int tc = tc_orig; 00133 int i_delta; 00134 00135 if( FFABS( p2 - p0 ) < beta ) { 00136 if(tc_orig) 00137 pix[-2*xstride] = p1 + av_clip( (( p2 + ( ( p0 + q0 + 1 ) >> 1 ) ) >> 1) - p1, -tc_orig, tc_orig ); 00138 tc++; 00139 } 00140 if( FFABS( q2 - q0 ) < beta ) { 00141 if(tc_orig) 00142 pix[ xstride] = q1 + av_clip( (( q2 + ( ( p0 + q0 + 1 ) >> 1 ) ) >> 1) - q1, -tc_orig, tc_orig ); 00143 tc++; 00144 } 00145 00146 i_delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc ); 00147 pix[-xstride] = av_clip_pixel( p0 + i_delta ); /* p0' */ 00148 pix[0] = av_clip_pixel( q0 - i_delta ); /* q0' */ 00149 } 00150 pix += ystride; 00151 } 00152 } 00153 } 00154 static void FUNCC(h264_v_loop_filter_luma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) 00155 { 00156 FUNCC(h264_loop_filter_luma)(pix, stride, sizeof(pixel), 4, alpha, beta, tc0); 00157 } 00158 static void FUNCC(h264_h_loop_filter_luma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) 00159 { 00160 FUNCC(h264_loop_filter_luma)(pix, sizeof(pixel), stride, 4, alpha, beta, tc0); 00161 } 00162 static void FUNCC(h264_h_loop_filter_luma_mbaff)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) 00163 { 00164 FUNCC(h264_loop_filter_luma)(pix, sizeof(pixel), stride, 2, alpha, beta, tc0); 00165 } 00166 00167 static av_always_inline av_flatten void FUNCC(h264_loop_filter_luma_intra)(uint8_t *_pix, int xstride, int ystride, int inner_iters, int alpha, int beta) 00168 { 00169 pixel *pix = (pixel*)_pix; 00170 int d; 00171 xstride /= sizeof(pixel); 00172 ystride /= sizeof(pixel); 00173 alpha <<= BIT_DEPTH - 8; 00174 beta <<= BIT_DEPTH - 8; 00175 for( d = 0; d < 4 * inner_iters; d++ ) { 00176 const int p2 = pix[-3*xstride]; 00177 const int p1 = pix[-2*xstride]; 00178 const int p0 = pix[-1*xstride]; 00179 00180 const int q0 = pix[ 0*xstride]; 00181 const int q1 = pix[ 1*xstride]; 00182 const int q2 = pix[ 2*xstride]; 00183 00184 if( FFABS( p0 - q0 ) < alpha && 00185 FFABS( p1 - p0 ) < beta && 00186 FFABS( q1 - q0 ) < beta ) { 00187 00188 if(FFABS( p0 - q0 ) < (( alpha >> 2 ) + 2 )){ 00189 if( FFABS( p2 - p0 ) < beta) 00190 { 00191 const int p3 = pix[-4*xstride]; 00192 /* p0', p1', p2' */ 00193 pix[-1*xstride] = ( p2 + 2*p1 + 2*p0 + 2*q0 + q1 + 4 ) >> 3; 00194 pix[-2*xstride] = ( p2 + p1 + p0 + q0 + 2 ) >> 2; 00195 pix[-3*xstride] = ( 2*p3 + 3*p2 + p1 + p0 + q0 + 4 ) >> 3; 00196 } else { 00197 /* p0' */ 00198 pix[-1*xstride] = ( 2*p1 + p0 + q1 + 2 ) >> 2; 00199 } 00200 if( FFABS( q2 - q0 ) < beta) 00201 { 00202 const int q3 = pix[3*xstride]; 00203 /* q0', q1', q2' */ 00204 pix[0*xstride] = ( p1 + 2*p0 + 2*q0 + 2*q1 + q2 + 4 ) >> 3; 00205 pix[1*xstride] = ( p0 + q0 + q1 + q2 + 2 ) >> 2; 00206 pix[2*xstride] = ( 2*q3 + 3*q2 + q1 + q0 + p0 + 4 ) >> 3; 00207 } else { 00208 /* q0' */ 00209 pix[0*xstride] = ( 2*q1 + q0 + p1 + 2 ) >> 2; 00210 } 00211 }else{ 00212 /* p0', q0' */ 00213 pix[-1*xstride] = ( 2*p1 + p0 + q1 + 2 ) >> 2; 00214 pix[ 0*xstride] = ( 2*q1 + q0 + p1 + 2 ) >> 2; 00215 } 00216 } 00217 pix += ystride; 00218 } 00219 } 00220 static void FUNCC(h264_v_loop_filter_luma_intra)(uint8_t *pix, int stride, int alpha, int beta) 00221 { 00222 FUNCC(h264_loop_filter_luma_intra)(pix, stride, sizeof(pixel), 4, alpha, beta); 00223 } 00224 static void FUNCC(h264_h_loop_filter_luma_intra)(uint8_t *pix, int stride, int alpha, int beta) 00225 { 00226 FUNCC(h264_loop_filter_luma_intra)(pix, sizeof(pixel), stride, 4, alpha, beta); 00227 } 00228 static void FUNCC(h264_h_loop_filter_luma_mbaff_intra)(uint8_t *pix, int stride, int alpha, int beta) 00229 { 00230 FUNCC(h264_loop_filter_luma_intra)(pix, sizeof(pixel), stride, 2, alpha, beta); 00231 } 00232 00233 static av_always_inline av_flatten void FUNCC(h264_loop_filter_chroma)(uint8_t *_pix, int xstride, int ystride, int inner_iters, int alpha, int beta, int8_t *tc0) 00234 { 00235 pixel *pix = (pixel*)_pix; 00236 int i, d; 00237 xstride /= sizeof(pixel); 00238 ystride /= sizeof(pixel); 00239 alpha <<= BIT_DEPTH - 8; 00240 beta <<= BIT_DEPTH - 8; 00241 for( i = 0; i < 4; i++ ) { 00242 const int tc = ((tc0[i] - 1) << (BIT_DEPTH - 8)) + 1; 00243 if( tc <= 0 ) { 00244 pix += inner_iters*ystride; 00245 continue; 00246 } 00247 for( d = 0; d < inner_iters; d++ ) { 00248 const int p0 = pix[-1*xstride]; 00249 const int p1 = pix[-2*xstride]; 00250 const int q0 = pix[0]; 00251 const int q1 = pix[1*xstride]; 00252 00253 if( FFABS( p0 - q0 ) < alpha && 00254 FFABS( p1 - p0 ) < beta && 00255 FFABS( q1 - q0 ) < beta ) { 00256 00257 int delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc ); 00258 00259 pix[-xstride] = av_clip_pixel( p0 + delta ); /* p0' */ 00260 pix[0] = av_clip_pixel( q0 - delta ); /* q0' */ 00261 } 00262 pix += ystride; 00263 } 00264 } 00265 } 00266 static void FUNCC(h264_v_loop_filter_chroma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) 00267 { 00268 FUNCC(h264_loop_filter_chroma)(pix, stride, sizeof(pixel), 2, alpha, beta, tc0); 00269 } 00270 static void FUNCC(h264_h_loop_filter_chroma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) 00271 { 00272 FUNCC(h264_loop_filter_chroma)(pix, sizeof(pixel), stride, 2, alpha, beta, tc0); 00273 } 00274 static void FUNCC(h264_h_loop_filter_chroma_mbaff)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) 00275 { 00276 FUNCC(h264_loop_filter_chroma)(pix, sizeof(pixel), stride, 1, alpha, beta, tc0); 00277 } 00278 00279 static av_always_inline av_flatten void FUNCC(h264_loop_filter_chroma_intra)(uint8_t *_pix, int xstride, int ystride, int inner_iters, int alpha, int beta) 00280 { 00281 pixel *pix = (pixel*)_pix; 00282 int d; 00283 xstride /= sizeof(pixel); 00284 ystride /= sizeof(pixel); 00285 alpha <<= BIT_DEPTH - 8; 00286 beta <<= BIT_DEPTH - 8; 00287 for( d = 0; d < 4 * inner_iters; d++ ) { 00288 const int p0 = pix[-1*xstride]; 00289 const int p1 = pix[-2*xstride]; 00290 const int q0 = pix[0]; 00291 const int q1 = pix[1*xstride]; 00292 00293 if( FFABS( p0 - q0 ) < alpha && 00294 FFABS( p1 - p0 ) < beta && 00295 FFABS( q1 - q0 ) < beta ) { 00296 00297 pix[-xstride] = ( 2*p1 + p0 + q1 + 2 ) >> 2; /* p0' */ 00298 pix[0] = ( 2*q1 + q0 + p1 + 2 ) >> 2; /* q0' */ 00299 } 00300 pix += ystride; 00301 } 00302 } 00303 static void FUNCC(h264_v_loop_filter_chroma_intra)(uint8_t *pix, int stride, int alpha, int beta) 00304 { 00305 FUNCC(h264_loop_filter_chroma_intra)(pix, stride, sizeof(pixel), 2, alpha, beta); 00306 } 00307 static void FUNCC(h264_h_loop_filter_chroma_intra)(uint8_t *pix, int stride, int alpha, int beta) 00308 { 00309 FUNCC(h264_loop_filter_chroma_intra)(pix, sizeof(pixel), stride, 2, alpha, beta); 00310 } 00311 static void FUNCC(h264_h_loop_filter_chroma_mbaff_intra)(uint8_t *pix, int stride, int alpha, int beta) 00312 { 00313 FUNCC(h264_loop_filter_chroma_intra)(pix, sizeof(pixel), stride, 1, alpha, beta); 00314 }