00001 /* 00002 * RV40 decoder 00003 * Copyright (c) 2007 Konstantin Shishkov 00004 * 00005 * This file is part of FFmpeg. 00006 * 00007 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00027 #include "libavutil/imgutils.h" 00028 00029 #include "avcodec.h" 00030 #include "dsputil.h" 00031 #include "mpegvideo.h" 00032 #include "golomb.h" 00033 00034 #include "rv34.h" 00035 #include "rv40vlc2.h" 00036 #include "rv40data.h" 00037 00038 static VLC aic_top_vlc; 00039 static VLC aic_mode1_vlc[AIC_MODE1_NUM], aic_mode2_vlc[AIC_MODE2_NUM]; 00040 static VLC ptype_vlc[NUM_PTYPE_VLCS], btype_vlc[NUM_BTYPE_VLCS]; 00041 00042 static const int16_t mode2_offs[] = { 00043 0, 614, 1222, 1794, 2410, 3014, 3586, 4202, 4792, 5382, 5966, 6542, 00044 7138, 7716, 8292, 8864, 9444, 10030, 10642, 11212, 11814 00045 }; 00046 00050 static av_cold void rv40_init_tables(void) 00051 { 00052 int i; 00053 static VLC_TYPE aic_table[1 << AIC_TOP_BITS][2]; 00054 static VLC_TYPE aic_mode1_table[AIC_MODE1_NUM << AIC_MODE1_BITS][2]; 00055 static VLC_TYPE aic_mode2_table[11814][2]; 00056 static VLC_TYPE ptype_table[NUM_PTYPE_VLCS << PTYPE_VLC_BITS][2]; 00057 static VLC_TYPE btype_table[NUM_BTYPE_VLCS << BTYPE_VLC_BITS][2]; 00058 00059 aic_top_vlc.table = aic_table; 00060 aic_top_vlc.table_allocated = 1 << AIC_TOP_BITS; 00061 init_vlc(&aic_top_vlc, AIC_TOP_BITS, AIC_TOP_SIZE, 00062 rv40_aic_top_vlc_bits, 1, 1, 00063 rv40_aic_top_vlc_codes, 1, 1, INIT_VLC_USE_NEW_STATIC); 00064 for(i = 0; i < AIC_MODE1_NUM; i++){ 00065 // Every tenth VLC table is empty 00066 if((i % 10) == 9) continue; 00067 aic_mode1_vlc[i].table = &aic_mode1_table[i << AIC_MODE1_BITS]; 00068 aic_mode1_vlc[i].table_allocated = 1 << AIC_MODE1_BITS; 00069 init_vlc(&aic_mode1_vlc[i], AIC_MODE1_BITS, AIC_MODE1_SIZE, 00070 aic_mode1_vlc_bits[i], 1, 1, 00071 aic_mode1_vlc_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); 00072 } 00073 for(i = 0; i < AIC_MODE2_NUM; i++){ 00074 aic_mode2_vlc[i].table = &aic_mode2_table[mode2_offs[i]]; 00075 aic_mode2_vlc[i].table_allocated = mode2_offs[i + 1] - mode2_offs[i]; 00076 init_vlc(&aic_mode2_vlc[i], AIC_MODE2_BITS, AIC_MODE2_SIZE, 00077 aic_mode2_vlc_bits[i], 1, 1, 00078 aic_mode2_vlc_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); 00079 } 00080 for(i = 0; i < NUM_PTYPE_VLCS; i++){ 00081 ptype_vlc[i].table = &ptype_table[i << PTYPE_VLC_BITS]; 00082 ptype_vlc[i].table_allocated = 1 << PTYPE_VLC_BITS; 00083 init_vlc_sparse(&ptype_vlc[i], PTYPE_VLC_BITS, PTYPE_VLC_SIZE, 00084 ptype_vlc_bits[i], 1, 1, 00085 ptype_vlc_codes[i], 1, 1, 00086 ptype_vlc_syms, 1, 1, INIT_VLC_USE_NEW_STATIC); 00087 } 00088 for(i = 0; i < NUM_BTYPE_VLCS; i++){ 00089 btype_vlc[i].table = &btype_table[i << BTYPE_VLC_BITS]; 00090 btype_vlc[i].table_allocated = 1 << BTYPE_VLC_BITS; 00091 init_vlc_sparse(&btype_vlc[i], BTYPE_VLC_BITS, BTYPE_VLC_SIZE, 00092 btype_vlc_bits[i], 1, 1, 00093 btype_vlc_codes[i], 1, 1, 00094 btype_vlc_syms, 1, 1, INIT_VLC_USE_NEW_STATIC); 00095 } 00096 } 00097 00104 static int get_dimension(GetBitContext *gb, const int *dim) 00105 { 00106 int t = get_bits(gb, 3); 00107 int val = dim[t]; 00108 if(val < 0) 00109 val = dim[get_bits1(gb) - val]; 00110 if(!val){ 00111 do{ 00112 t = get_bits(gb, 8); 00113 val += t << 2; 00114 }while(t == 0xFF); 00115 } 00116 return val; 00117 } 00118 00122 static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h) 00123 { 00124 *w = get_dimension(gb, rv40_standard_widths); 00125 *h = get_dimension(gb, rv40_standard_heights); 00126 } 00127 00128 static int rv40_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si) 00129 { 00130 int mb_bits; 00131 int w = r->s.width, h = r->s.height; 00132 int mb_size; 00133 00134 memset(si, 0, sizeof(SliceInfo)); 00135 if(get_bits1(gb)) 00136 return -1; 00137 si->type = get_bits(gb, 2); 00138 if(si->type == 1) si->type = 0; 00139 si->quant = get_bits(gb, 5); 00140 if(get_bits(gb, 2)) 00141 return -1; 00142 si->vlc_set = get_bits(gb, 2); 00143 skip_bits1(gb); 00144 si->pts = get_bits(gb, 13); 00145 if(!si->type || !get_bits1(gb)) 00146 rv40_parse_picture_size(gb, &w, &h); 00147 if(av_image_check_size(w, h, 0, r->s.avctx) < 0) 00148 return -1; 00149 si->width = w; 00150 si->height = h; 00151 mb_size = ((w + 15) >> 4) * ((h + 15) >> 4); 00152 mb_bits = ff_rv34_get_start_offset(gb, mb_size); 00153 si->start = get_bits(gb, mb_bits); 00154 00155 return 0; 00156 } 00157 00161 static int rv40_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst) 00162 { 00163 MpegEncContext *s = &r->s; 00164 int i, j, k, v; 00165 int A, B, C; 00166 int pattern; 00167 int8_t *ptr; 00168 00169 for(i = 0; i < 4; i++, dst += r->intra_types_stride){ 00170 if(!i && s->first_slice_line){ 00171 pattern = get_vlc2(gb, aic_top_vlc.table, AIC_TOP_BITS, 1); 00172 dst[0] = (pattern >> 2) & 2; 00173 dst[1] = (pattern >> 1) & 2; 00174 dst[2] = pattern & 2; 00175 dst[3] = (pattern << 1) & 2; 00176 continue; 00177 } 00178 ptr = dst; 00179 for(j = 0; j < 4; j++){ 00180 /* Coefficients are read using VLC chosen by the prediction pattern 00181 * The first one (used for retrieving a pair of coefficients) is 00182 * constructed from the top, top right and left coefficients 00183 * The second one (used for retrieving only one coefficient) is 00184 * top + 10 * left. 00185 */ 00186 A = ptr[-r->intra_types_stride + 1]; // it won't be used for the last coefficient in a row 00187 B = ptr[-r->intra_types_stride]; 00188 C = ptr[-1]; 00189 pattern = A + (B << 4) + (C << 8); 00190 for(k = 0; k < MODE2_PATTERNS_NUM; k++) 00191 if(pattern == rv40_aic_table_index[k]) 00192 break; 00193 if(j < 3 && k < MODE2_PATTERNS_NUM){ //pattern is found, decoding 2 coefficients 00194 v = get_vlc2(gb, aic_mode2_vlc[k].table, AIC_MODE2_BITS, 2); 00195 *ptr++ = v/9; 00196 *ptr++ = v%9; 00197 j++; 00198 }else{ 00199 if(B != -1 && C != -1) 00200 v = get_vlc2(gb, aic_mode1_vlc[B + C*10].table, AIC_MODE1_BITS, 1); 00201 else{ // tricky decoding 00202 v = 0; 00203 switch(C){ 00204 case -1: // code 0 -> 1, 1 -> 0 00205 if(B < 2) 00206 v = get_bits1(gb) ^ 1; 00207 break; 00208 case 0: 00209 case 2: // code 0 -> 2, 1 -> 0 00210 v = (get_bits1(gb) ^ 1) << 1; 00211 break; 00212 } 00213 } 00214 *ptr++ = v; 00215 } 00216 } 00217 } 00218 return 0; 00219 } 00220 00224 static int rv40_decode_mb_info(RV34DecContext *r) 00225 { 00226 MpegEncContext *s = &r->s; 00227 GetBitContext *gb = &s->gb; 00228 int q, i; 00229 int prev_type = 0; 00230 int mb_pos = s->mb_x + s->mb_y * s->mb_stride; 00231 int blocks[RV34_MB_TYPES] = {0}; 00232 int count = 0; 00233 00234 if(!r->s.mb_skip_run) { 00235 r->s.mb_skip_run = svq3_get_ue_golomb(gb) + 1; 00236 if(r->s.mb_skip_run > (unsigned)s->mb_num) 00237 return -1; 00238 } 00239 00240 if(--r->s.mb_skip_run) 00241 return RV34_MB_SKIP; 00242 00243 if(r->avail_cache[6-1]) 00244 blocks[r->mb_type[mb_pos - 1]]++; 00245 if(r->avail_cache[6-4]){ 00246 blocks[r->mb_type[mb_pos - s->mb_stride]]++; 00247 if(r->avail_cache[6-2]) 00248 blocks[r->mb_type[mb_pos - s->mb_stride + 1]]++; 00249 if(r->avail_cache[6-5]) 00250 blocks[r->mb_type[mb_pos - s->mb_stride - 1]]++; 00251 } 00252 00253 for(i = 0; i < RV34_MB_TYPES; i++){ 00254 if(blocks[i] > count){ 00255 count = blocks[i]; 00256 prev_type = i; 00257 } 00258 } 00259 if(s->pict_type == AV_PICTURE_TYPE_P){ 00260 prev_type = block_num_to_ptype_vlc_num[prev_type]; 00261 q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1); 00262 if(q < PBTYPE_ESCAPE) 00263 return q; 00264 q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1); 00265 av_log(s->avctx, AV_LOG_ERROR, "Dquant for P-frame\n"); 00266 }else{ 00267 prev_type = block_num_to_btype_vlc_num[prev_type]; 00268 q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1); 00269 if(q < PBTYPE_ESCAPE) 00270 return q; 00271 q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1); 00272 av_log(s->avctx, AV_LOG_ERROR, "Dquant for B-frame\n"); 00273 } 00274 return 0; 00275 } 00276 00277 enum RV40BlockPos{ 00278 POS_CUR, 00279 POS_TOP, 00280 POS_LEFT, 00281 POS_BOTTOM, 00282 }; 00283 00284 #define MASK_CUR 0x0001 00285 #define MASK_RIGHT 0x0008 00286 #define MASK_BOTTOM 0x0010 00287 #define MASK_TOP 0x1000 00288 #define MASK_Y_TOP_ROW 0x000F 00289 #define MASK_Y_LAST_ROW 0xF000 00290 #define MASK_Y_LEFT_COL 0x1111 00291 #define MASK_Y_RIGHT_COL 0x8888 00292 #define MASK_C_TOP_ROW 0x0003 00293 #define MASK_C_LAST_ROW 0x000C 00294 #define MASK_C_LEFT_COL 0x0005 00295 #define MASK_C_RIGHT_COL 0x000A 00296 00297 static const int neighbour_offs_x[4] = { 0, 0, -1, 0 }; 00298 static const int neighbour_offs_y[4] = { 0, -1, 0, 1 }; 00299 00303 static void rv40_loop_filter(RV34DecContext *r, int row) 00304 { 00305 MpegEncContext *s = &r->s; 00306 int mb_pos, mb_x; 00307 int i, j, k; 00308 uint8_t *Y, *C; 00309 int alpha, beta, betaY, betaC; 00310 int q; 00311 int mbtype[4]; 00312 00316 int mb_strong[4]; 00317 int clip[4]; 00318 00324 int cbp[4]; 00329 int uvcbp[4][2]; 00335 int mvmasks[4]; 00336 00337 mb_pos = row * s->mb_stride; 00338 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){ 00339 int mbtype = s->current_picture_ptr->f.mb_type[mb_pos]; 00340 if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype)) 00341 r->cbp_luma [mb_pos] = r->deblock_coefs[mb_pos] = 0xFFFF; 00342 if(IS_INTRA(mbtype)) 00343 r->cbp_chroma[mb_pos] = 0xFF; 00344 } 00345 mb_pos = row * s->mb_stride; 00346 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){ 00347 int y_h_deblock, y_v_deblock; 00348 int c_v_deblock[2], c_h_deblock[2]; 00349 int clip_left; 00350 int avail[4]; 00351 int y_to_deblock, c_to_deblock[2]; 00352 00353 q = s->current_picture_ptr->f.qscale_table[mb_pos]; 00354 alpha = rv40_alpha_tab[q]; 00355 beta = rv40_beta_tab [q]; 00356 betaY = betaC = beta * 3; 00357 if(s->width * s->height <= 176*144) 00358 betaY += beta; 00359 00360 avail[0] = 1; 00361 avail[1] = row; 00362 avail[2] = mb_x; 00363 avail[3] = row < s->mb_height - 1; 00364 for(i = 0; i < 4; i++){ 00365 if(avail[i]){ 00366 int pos = mb_pos + neighbour_offs_x[i] + neighbour_offs_y[i]*s->mb_stride; 00367 mvmasks[i] = r->deblock_coefs[pos]; 00368 mbtype [i] = s->current_picture_ptr->f.mb_type[pos]; 00369 cbp [i] = r->cbp_luma[pos]; 00370 uvcbp[i][0] = r->cbp_chroma[pos] & 0xF; 00371 uvcbp[i][1] = r->cbp_chroma[pos] >> 4; 00372 }else{ 00373 mvmasks[i] = 0; 00374 mbtype [i] = mbtype[0]; 00375 cbp [i] = 0; 00376 uvcbp[i][0] = uvcbp[i][1] = 0; 00377 } 00378 mb_strong[i] = IS_INTRA(mbtype[i]) || IS_SEPARATE_DC(mbtype[i]); 00379 clip[i] = rv40_filter_clip_tbl[mb_strong[i] + 1][q]; 00380 } 00381 y_to_deblock = mvmasks[POS_CUR] 00382 | (mvmasks[POS_BOTTOM] << 16); 00383 /* This pattern contains bits signalling that horizontal edges of 00384 * the current block can be filtered. 00385 * That happens when either of adjacent subblocks is coded or lies on 00386 * the edge of 8x8 blocks with motion vectors differing by more than 00387 * 3/4 pel in any component (any edge orientation for some reason). 00388 */ 00389 y_h_deblock = y_to_deblock 00390 | ((cbp[POS_CUR] << 4) & ~MASK_Y_TOP_ROW) 00391 | ((cbp[POS_TOP] & MASK_Y_LAST_ROW) >> 12); 00392 /* This pattern contains bits signalling that vertical edges of 00393 * the current block can be filtered. 00394 * That happens when either of adjacent subblocks is coded or lies on 00395 * the edge of 8x8 blocks with motion vectors differing by more than 00396 * 3/4 pel in any component (any edge orientation for some reason). 00397 */ 00398 y_v_deblock = y_to_deblock 00399 | ((cbp[POS_CUR] << 1) & ~MASK_Y_LEFT_COL) 00400 | ((cbp[POS_LEFT] & MASK_Y_RIGHT_COL) >> 3); 00401 if(!mb_x) 00402 y_v_deblock &= ~MASK_Y_LEFT_COL; 00403 if(!row) 00404 y_h_deblock &= ~MASK_Y_TOP_ROW; 00405 if(row == s->mb_height - 1 || (mb_strong[POS_CUR] || mb_strong[POS_BOTTOM])) 00406 y_h_deblock &= ~(MASK_Y_TOP_ROW << 16); 00407 /* Calculating chroma patterns is similar and easier since there is 00408 * no motion vector pattern for them. 00409 */ 00410 for(i = 0; i < 2; i++){ 00411 c_to_deblock[i] = (uvcbp[POS_BOTTOM][i] << 4) | uvcbp[POS_CUR][i]; 00412 c_v_deblock[i] = c_to_deblock[i] 00413 | ((uvcbp[POS_CUR] [i] << 1) & ~MASK_C_LEFT_COL) 00414 | ((uvcbp[POS_LEFT][i] & MASK_C_RIGHT_COL) >> 1); 00415 c_h_deblock[i] = c_to_deblock[i] 00416 | ((uvcbp[POS_TOP][i] & MASK_C_LAST_ROW) >> 2) 00417 | (uvcbp[POS_CUR][i] << 2); 00418 if(!mb_x) 00419 c_v_deblock[i] &= ~MASK_C_LEFT_COL; 00420 if(!row) 00421 c_h_deblock[i] &= ~MASK_C_TOP_ROW; 00422 if(row == s->mb_height - 1 || mb_strong[POS_CUR] || mb_strong[POS_BOTTOM]) 00423 c_h_deblock[i] &= ~(MASK_C_TOP_ROW << 4); 00424 } 00425 00426 for(j = 0; j < 16; j += 4){ 00427 Y = s->current_picture_ptr->f.data[0] + mb_x*16 + (row*16 + j) * s->linesize; 00428 for(i = 0; i < 4; i++, Y += 4){ 00429 int ij = i + j; 00430 int clip_cur = y_to_deblock & (MASK_CUR << ij) ? clip[POS_CUR] : 0; 00431 int dither = j ? ij : i*4; 00432 00433 // if bottom block is coded then we can filter its top edge 00434 // (or bottom edge of this block, which is the same) 00435 if(y_h_deblock & (MASK_BOTTOM << ij)){ 00436 r->rdsp.rv40_h_loop_filter(Y+4*s->linesize, s->linesize, dither, 00437 y_to_deblock & (MASK_BOTTOM << ij) ? clip[POS_CUR] : 0, 00438 clip_cur, 00439 alpha, beta, betaY, 0, 0); 00440 } 00441 // filter left block edge in ordinary mode (with low filtering strength) 00442 if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] || mb_strong[POS_LEFT]))){ 00443 if(!i) 00444 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0; 00445 else 00446 clip_left = y_to_deblock & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0; 00447 r->rdsp.rv40_v_loop_filter(Y, s->linesize, dither, 00448 clip_cur, 00449 clip_left, 00450 alpha, beta, betaY, 0, 0); 00451 } 00452 // filter top edge of the current macroblock when filtering strength is high 00453 if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] || mb_strong[POS_TOP])){ 00454 r->rdsp.rv40_h_loop_filter(Y, s->linesize, dither, 00455 clip_cur, 00456 mvmasks[POS_TOP] & (MASK_TOP << i) ? clip[POS_TOP] : 0, 00457 alpha, beta, betaY, 0, 1); 00458 } 00459 // filter left block edge in edge mode (with high filtering strength) 00460 if(y_v_deblock & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] || mb_strong[POS_LEFT])){ 00461 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0; 00462 r->rdsp.rv40_v_loop_filter(Y, s->linesize, dither, 00463 clip_cur, 00464 clip_left, 00465 alpha, beta, betaY, 0, 1); 00466 } 00467 } 00468 } 00469 for(k = 0; k < 2; k++){ 00470 for(j = 0; j < 2; j++){ 00471 C = s->current_picture_ptr->f.data[k + 1] + mb_x*8 + (row*8 + j*4) * s->uvlinesize; 00472 for(i = 0; i < 2; i++, C += 4){ 00473 int ij = i + j*2; 00474 int clip_cur = c_to_deblock[k] & (MASK_CUR << ij) ? clip[POS_CUR] : 0; 00475 if(c_h_deblock[k] & (MASK_CUR << (ij+2))){ 00476 int clip_bot = c_to_deblock[k] & (MASK_CUR << (ij+2)) ? clip[POS_CUR] : 0; 00477 r->rdsp.rv40_h_loop_filter(C+4*s->uvlinesize, s->uvlinesize, i*8, 00478 clip_bot, 00479 clip_cur, 00480 alpha, beta, betaC, 1, 0); 00481 } 00482 if((c_v_deblock[k] & (MASK_CUR << ij)) && (i || !(mb_strong[POS_CUR] || mb_strong[POS_LEFT]))){ 00483 if(!i) 00484 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0; 00485 else 00486 clip_left = c_to_deblock[k] & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0; 00487 r->rdsp.rv40_v_loop_filter(C, s->uvlinesize, j*8, 00488 clip_cur, 00489 clip_left, 00490 alpha, beta, betaC, 1, 0); 00491 } 00492 if(!j && c_h_deblock[k] & (MASK_CUR << ij) && (mb_strong[POS_CUR] || mb_strong[POS_TOP])){ 00493 int clip_top = uvcbp[POS_TOP][k] & (MASK_CUR << (ij+2)) ? clip[POS_TOP] : 0; 00494 r->rdsp.rv40_h_loop_filter(C, s->uvlinesize, i*8, 00495 clip_cur, 00496 clip_top, 00497 alpha, beta, betaC, 1, 1); 00498 } 00499 if(c_v_deblock[k] & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] || mb_strong[POS_LEFT])){ 00500 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0; 00501 r->rdsp.rv40_v_loop_filter(C, s->uvlinesize, j*8, 00502 clip_cur, 00503 clip_left, 00504 alpha, beta, betaC, 1, 1); 00505 } 00506 } 00507 } 00508 } 00509 } 00510 } 00511 00515 static av_cold int rv40_decode_init(AVCodecContext *avctx) 00516 { 00517 RV34DecContext *r = avctx->priv_data; 00518 00519 r->rv30 = 0; 00520 ff_rv34_decode_init(avctx); 00521 if(!aic_top_vlc.bits) 00522 rv40_init_tables(); 00523 r->parse_slice_header = rv40_parse_slice_header; 00524 r->decode_intra_types = rv40_decode_intra_types; 00525 r->decode_mb_info = rv40_decode_mb_info; 00526 r->loop_filter = rv40_loop_filter; 00527 r->luma_dc_quant_i = rv40_luma_dc_quant[0]; 00528 r->luma_dc_quant_p = rv40_luma_dc_quant[1]; 00529 return 0; 00530 } 00531 00532 AVCodec ff_rv40_decoder = { 00533 .name = "rv40", 00534 .type = AVMEDIA_TYPE_VIDEO, 00535 .id = CODEC_ID_RV40, 00536 .priv_data_size = sizeof(RV34DecContext), 00537 .init = rv40_decode_init, 00538 .close = ff_rv34_decode_end, 00539 .decode = ff_rv34_decode_frame, 00540 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY, 00541 .flush = ff_mpeg_flush, 00542 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 4.0"), 00543 .pix_fmts = ff_pixfmt_list_420, 00544 };