00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015
00016
00017
00018
00019
00020
00021
00027 #include "avcodec.h"
00028 #include "dsputil.h"
00029 #include "mpegvideo.h"
00030 #include "golomb.h"
00031
00032 #include "rv34.h"
00033 #include "rv40vlc2.h"
00034 #include "rv40data.h"
00035
00036 static VLC aic_top_vlc;
00037 static VLC aic_mode1_vlc[AIC_MODE1_NUM], aic_mode2_vlc[AIC_MODE2_NUM];
00038 static VLC ptype_vlc[NUM_PTYPE_VLCS], btype_vlc[NUM_BTYPE_VLCS];
00039
00043 static av_cold void rv40_init_tables(void)
00044 {
00045 int i;
00046
00047 init_vlc(&aic_top_vlc, AIC_TOP_BITS, AIC_TOP_SIZE,
00048 rv40_aic_top_vlc_bits, 1, 1,
00049 rv40_aic_top_vlc_codes, 1, 1, INIT_VLC_USE_STATIC);
00050 for(i = 0; i < AIC_MODE1_NUM; i++){
00051
00052 if((i % 10) == 9) continue;
00053 init_vlc(&aic_mode1_vlc[i], AIC_MODE1_BITS, AIC_MODE1_SIZE,
00054 aic_mode1_vlc_bits[i], 1, 1,
00055 aic_mode1_vlc_codes[i], 1, 1, INIT_VLC_USE_STATIC);
00056 }
00057 for(i = 0; i < AIC_MODE2_NUM; i++){
00058 init_vlc(&aic_mode2_vlc[i], AIC_MODE2_BITS, AIC_MODE2_SIZE,
00059 aic_mode2_vlc_bits[i], 1, 1,
00060 aic_mode2_vlc_codes[i], 2, 2, INIT_VLC_USE_STATIC);
00061 }
00062 for(i = 0; i < NUM_PTYPE_VLCS; i++)
00063 init_vlc_sparse(&ptype_vlc[i], PTYPE_VLC_BITS, PTYPE_VLC_SIZE,
00064 ptype_vlc_bits[i], 1, 1,
00065 ptype_vlc_codes[i], 1, 1,
00066 ptype_vlc_syms, 1, 1, INIT_VLC_USE_STATIC);
00067 for(i = 0; i < NUM_BTYPE_VLCS; i++)
00068 init_vlc_sparse(&btype_vlc[i], BTYPE_VLC_BITS, BTYPE_VLC_SIZE,
00069 btype_vlc_bits[i], 1, 1,
00070 btype_vlc_codes[i], 1, 1,
00071 btype_vlc_syms, 1, 1, INIT_VLC_USE_STATIC);
00072 }
00073
00080 static int get_dimension(GetBitContext *gb, const int *dim)
00081 {
00082 int t = get_bits(gb, 3);
00083 int val = dim[t];
00084 if(val < 0)
00085 val = dim[get_bits1(gb) - val];
00086 if(!val){
00087 do{
00088 t = get_bits(gb, 8);
00089 val += t << 2;
00090 }while(t == 0xFF);
00091 }
00092 return val;
00093 }
00094
00098 static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h)
00099 {
00100 *w = get_dimension(gb, rv40_standard_widths);
00101 *h = get_dimension(gb, rv40_standard_heights);
00102 }
00103
00104 static int rv40_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
00105 {
00106 int mb_bits;
00107 int w = r->s.width, h = r->s.height;
00108 int mb_size;
00109
00110 memset(si, 0, sizeof(SliceInfo));
00111 if(get_bits1(gb))
00112 return -1;
00113 si->type = get_bits(gb, 2);
00114 if(si->type == 1) si->type = 0;
00115 si->quant = get_bits(gb, 5);
00116 if(get_bits(gb, 2))
00117 return -1;
00118 si->vlc_set = get_bits(gb, 2);
00119 skip_bits1(gb);
00120 si->pts = get_bits(gb, 13);
00121 if(!si->type || !get_bits1(gb))
00122 rv40_parse_picture_size(gb, &w, &h);
00123 if(avcodec_check_dimensions(r->s.avctx, w, h) < 0)
00124 return -1;
00125 si->width = w;
00126 si->height = h;
00127 mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);
00128 mb_bits = ff_rv34_get_start_offset(gb, mb_size);
00129 si->start = get_bits(gb, mb_bits);
00130
00131 return 0;
00132 }
00133
00137 static int rv40_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst)
00138 {
00139 MpegEncContext *s = &r->s;
00140 int i, j, k, v;
00141 int A, B, C;
00142 int pattern;
00143 int8_t *ptr;
00144
00145 for(i = 0; i < 4; i++, dst += s->b4_stride){
00146 if(!i && s->first_slice_line){
00147 pattern = get_vlc2(gb, aic_top_vlc.table, AIC_TOP_BITS, 1);
00148 dst[0] = (pattern >> 2) & 2;
00149 dst[1] = (pattern >> 1) & 2;
00150 dst[2] = pattern & 2;
00151 dst[3] = (pattern << 1) & 2;
00152 continue;
00153 }
00154 ptr = dst;
00155 for(j = 0; j < 4; j++){
00156
00157
00158
00159
00160
00161
00162 A = ptr[-s->b4_stride + 1];
00163 B = ptr[-s->b4_stride];
00164 C = ptr[-1];
00165 pattern = A + (B << 4) + (C << 8);
00166 for(k = 0; k < MODE2_PATTERNS_NUM; k++)
00167 if(pattern == rv40_aic_table_index[k])
00168 break;
00169 if(j < 3 && k < MODE2_PATTERNS_NUM){
00170 v = get_vlc2(gb, aic_mode2_vlc[k].table, AIC_MODE2_BITS, 2);
00171 *ptr++ = v/9;
00172 *ptr++ = v%9;
00173 j++;
00174 }else{
00175 if(B != -1 && C != -1)
00176 v = get_vlc2(gb, aic_mode1_vlc[B + C*10].table, AIC_MODE1_BITS, 1);
00177 else{
00178 v = 0;
00179 switch(C){
00180 case -1:
00181 if(B < 2)
00182 v = get_bits1(gb) ^ 1;
00183 break;
00184 case 0:
00185 case 2:
00186 v = (get_bits1(gb) ^ 1) << 1;
00187 break;
00188 }
00189 }
00190 *ptr++ = v;
00191 }
00192 }
00193 }
00194 return 0;
00195 }
00196
00200 static int rv40_decode_mb_info(RV34DecContext *r)
00201 {
00202 MpegEncContext *s = &r->s;
00203 GetBitContext *gb = &s->gb;
00204 int q, i;
00205 int prev_type = 0;
00206 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
00207 int blocks[RV34_MB_TYPES] = {0};
00208 int count = 0;
00209
00210 if(!r->s.mb_skip_run)
00211 r->s.mb_skip_run = svq3_get_ue_golomb(gb) + 1;
00212
00213 if(--r->s.mb_skip_run)
00214 return RV34_MB_SKIP;
00215
00216 if(r->avail_cache[5-1])
00217 blocks[r->mb_type[mb_pos - 1]]++;
00218 if(r->avail_cache[5-4]){
00219 blocks[r->mb_type[mb_pos - s->mb_stride]]++;
00220 if(r->avail_cache[5-2])
00221 blocks[r->mb_type[mb_pos - s->mb_stride + 1]]++;
00222 if(r->avail_cache[5-5])
00223 blocks[r->mb_type[mb_pos - s->mb_stride - 1]]++;
00224 }
00225
00226 for(i = 0; i < RV34_MB_TYPES; i++){
00227 if(blocks[i] > count){
00228 count = blocks[i];
00229 prev_type = i;
00230 }
00231 }
00232 if(s->pict_type == FF_P_TYPE){
00233 prev_type = block_num_to_ptype_vlc_num[prev_type];
00234 q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
00235 if(q < PBTYPE_ESCAPE)
00236 return q;
00237 q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
00238 av_log(s->avctx, AV_LOG_ERROR, "Dquant for P-frame\n");
00239 }else{
00240 prev_type = block_num_to_btype_vlc_num[prev_type];
00241 q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
00242 if(q < PBTYPE_ESCAPE)
00243 return q;
00244 q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
00245 av_log(s->avctx, AV_LOG_ERROR, "Dquant for B-frame\n");
00246 }
00247 return 0;
00248 }
00249
00250 #define CLIP_SYMM(a, b) av_clip(a, -(b), b)
00251
00254 static inline void rv40_weak_loop_filter(uint8_t *src, const int step,
00255 const int filter_p1, const int filter_q1,
00256 const int alpha, const int beta,
00257 const int lim_p0q0,
00258 const int lim_q1, const int lim_p1,
00259 const int diff_p1p0, const int diff_q1q0,
00260 const int diff_p1p2, const int diff_q1q2)
00261 {
00262 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
00263 int t, u, diff;
00264
00265 t = src[0*step] - src[-1*step];
00266 if(!t)
00267 return;
00268 u = (alpha * FFABS(t)) >> 7;
00269 if(u > 3 - (filter_p1 && filter_q1))
00270 return;
00271
00272 t <<= 2;
00273 if(filter_p1 && filter_q1)
00274 t += src[-2*step] - src[1*step];
00275 diff = CLIP_SYMM((t + 4) >> 3, lim_p0q0);
00276 src[-1*step] = cm[src[-1*step] + diff];
00277 src[ 0*step] = cm[src[ 0*step] - diff];
00278 if(FFABS(diff_p1p2) <= beta && filter_p1){
00279 t = (diff_p1p0 + diff_p1p2 - diff) >> 1;
00280 src[-2*step] = cm[src[-2*step] - CLIP_SYMM(t, lim_p1)];
00281 }
00282 if(FFABS(diff_q1q2) <= beta && filter_q1){
00283 t = (diff_q1q0 + diff_q1q2 + diff) >> 1;
00284 src[ 1*step] = cm[src[ 1*step] - CLIP_SYMM(t, lim_q1)];
00285 }
00286 }
00287
00288 static inline void rv40_adaptive_loop_filter(uint8_t *src, const int step,
00289 const int stride, const int dmode,
00290 const int lim_q1, const int lim_p1,
00291 const int alpha,
00292 const int beta, const int beta2,
00293 const int chroma, const int edge)
00294 {
00295 int diff_p1p0[4], diff_q1q0[4], diff_p1p2[4], diff_q1q2[4];
00296 int sum_p1p0 = 0, sum_q1q0 = 0, sum_p1p2 = 0, sum_q1q2 = 0;
00297 uint8_t *ptr;
00298 int flag_strong0 = 1, flag_strong1 = 1;
00299 int filter_p1, filter_q1;
00300 int i;
00301 int lims;
00302
00303 for(i = 0, ptr = src; i < 4; i++, ptr += stride){
00304 diff_p1p0[i] = ptr[-2*step] - ptr[-1*step];
00305 diff_q1q0[i] = ptr[ 1*step] - ptr[ 0*step];
00306 sum_p1p0 += diff_p1p0[i];
00307 sum_q1q0 += diff_q1q0[i];
00308 }
00309 filter_p1 = FFABS(sum_p1p0) < (beta<<2);
00310 filter_q1 = FFABS(sum_q1q0) < (beta<<2);
00311 if(!filter_p1 && !filter_q1)
00312 return;
00313
00314 for(i = 0, ptr = src; i < 4; i++, ptr += stride){
00315 diff_p1p2[i] = ptr[-2*step] - ptr[-3*step];
00316 diff_q1q2[i] = ptr[ 1*step] - ptr[ 2*step];
00317 sum_p1p2 += diff_p1p2[i];
00318 sum_q1q2 += diff_q1q2[i];
00319 }
00320
00321 if(edge){
00322 flag_strong0 = filter_p1 && (FFABS(sum_p1p2) < beta2);
00323 flag_strong1 = filter_q1 && (FFABS(sum_q1q2) < beta2);
00324 }else{
00325 flag_strong0 = flag_strong1 = 0;
00326 }
00327
00328 lims = filter_p1 + filter_q1 + ((lim_q1 + lim_p1) >> 1) + 1;
00329 if(flag_strong0 && flag_strong1){
00330 for(i = 0; i < 4; i++, src += stride){
00331 int sflag, p0, q0, p1, q1;
00332 int t = src[0*step] - src[-1*step];
00333
00334 if(!t) continue;
00335 sflag = (alpha * FFABS(t)) >> 7;
00336 if(sflag > 1) continue;
00337
00338 p0 = (25*src[-3*step] + 26*src[-2*step]
00339 + 26*src[-1*step]
00340 + 26*src[ 0*step] + 25*src[ 1*step] + rv40_dither_l[dmode + i]) >> 7;
00341 q0 = (25*src[-2*step] + 26*src[-1*step]
00342 + 26*src[ 0*step]
00343 + 26*src[ 1*step] + 25*src[ 2*step] + rv40_dither_r[dmode + i]) >> 7;
00344 if(sflag){
00345 p0 = av_clip(p0, src[-1*step] - lims, src[-1*step] + lims);
00346 q0 = av_clip(q0, src[ 0*step] - lims, src[ 0*step] + lims);
00347 }
00348 p1 = (25*src[-4*step] + 26*src[-3*step]
00349 + 26*src[-2*step]
00350 + 26*p0 + 25*src[ 0*step] + rv40_dither_l[dmode + i]) >> 7;
00351 q1 = (25*src[-1*step] + 26*q0
00352 + 26*src[ 1*step]
00353 + 26*src[ 2*step] + 25*src[ 3*step] + rv40_dither_r[dmode + i]) >> 7;
00354 if(sflag){
00355 p1 = av_clip(p1, src[-2*step] - lims, src[-2*step] + lims);
00356 q1 = av_clip(q1, src[ 1*step] - lims, src[ 1*step] + lims);
00357 }
00358 src[-2*step] = p1;
00359 src[-1*step] = p0;
00360 src[ 0*step] = q0;
00361 src[ 1*step] = q1;
00362 if(!chroma){
00363 src[-3*step] = (25*src[-1*step] + 26*src[-2*step] + 51*src[-3*step] + 26*src[-4*step] + 64) >> 7;
00364 src[ 2*step] = (25*src[ 0*step] + 26*src[ 1*step] + 51*src[ 2*step] + 26*src[ 3*step] + 64) >> 7;
00365 }
00366 }
00367 }else if(filter_p1 && filter_q1){
00368 for(i = 0; i < 4; i++, src += stride)
00369 rv40_weak_loop_filter(src, step, 1, 1, alpha, beta, lims, lim_q1, lim_p1,
00370 diff_p1p0[i], diff_q1q0[i], diff_p1p2[i], diff_q1q2[i]);
00371 }else{
00372 for(i = 0; i < 4; i++, src += stride)
00373 rv40_weak_loop_filter(src, step, filter_p1, filter_q1,
00374 alpha, beta, lims>>1, lim_q1>>1, lim_p1>>1,
00375 diff_p1p0[i], diff_q1q0[i], diff_p1p2[i], diff_q1q2[i]);
00376 }
00377 }
00378
00379 static void rv40_v_loop_filter(uint8_t *src, int stride, int dmode,
00380 int lim_q1, int lim_p1,
00381 int alpha, int beta, int beta2, int chroma, int edge){
00382 rv40_adaptive_loop_filter(src, 1, stride, dmode, lim_q1, lim_p1,
00383 alpha, beta, beta2, chroma, edge);
00384 }
00385 static void rv40_h_loop_filter(uint8_t *src, int stride, int dmode,
00386 int lim_q1, int lim_p1,
00387 int alpha, int beta, int beta2, int chroma, int edge){
00388 rv40_adaptive_loop_filter(src, stride, 1, dmode, lim_q1, lim_p1,
00389 alpha, beta, beta2, chroma, edge);
00390 }
00391
00392 enum RV40BlockPos{
00393 POS_CUR,
00394 POS_TOP,
00395 POS_LEFT,
00396 POS_BOTTOM,
00397 };
00398
00399 #define MASK_CUR 0x0001
00400 #define MASK_RIGHT 0x0008
00401 #define MASK_BOTTOM 0x0010
00402 #define MASK_TOP 0x1000
00403 #define MASK_Y_TOP_ROW 0x000F
00404 #define MASK_Y_LAST_ROW 0xF000
00405 #define MASK_Y_LEFT_COL 0x1111
00406 #define MASK_Y_RIGHT_COL 0x8888
00407 #define MASK_C_TOP_ROW 0x0003
00408 #define MASK_C_LAST_ROW 0x000C
00409 #define MASK_C_LEFT_COL 0x0005
00410 #define MASK_C_RIGHT_COL 0x000A
00411
00412 static const int neighbour_offs_x[4] = { 0, 0, -1, 0 };
00413 static const int neighbour_offs_y[4] = { 0, -1, 0, 1 };
00414
00418 static void rv40_loop_filter(RV34DecContext *r, int row)
00419 {
00420 MpegEncContext *s = &r->s;
00421 int mb_pos, mb_x;
00422 int i, j, k;
00423 uint8_t *Y, *C;
00424 int alpha, beta, betaY, betaC;
00425 int q;
00426 int mbtype[4];
00427
00431 int mb_strong[4];
00432 int clip[4];
00433
00439 int cbp[4];
00444 int uvcbp[4][2];
00450 int mvmasks[4];
00451
00452 mb_pos = row * s->mb_stride;
00453 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
00454 int mbtype = s->current_picture_ptr->mb_type[mb_pos];
00455 if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype))
00456 r->cbp_luma [mb_pos] = r->deblock_coefs[mb_pos] = 0xFFFF;
00457 if(IS_INTRA(mbtype))
00458 r->cbp_chroma[mb_pos] = 0xFF;
00459 }
00460 mb_pos = row * s->mb_stride;
00461 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
00462 int y_h_deblock, y_v_deblock;
00463 int c_v_deblock[2], c_h_deblock[2];
00464 int clip_left;
00465 int avail[4];
00466 int y_to_deblock, c_to_deblock[2];
00467
00468 q = s->current_picture_ptr->qscale_table[mb_pos];
00469 alpha = rv40_alpha_tab[q];
00470 beta = rv40_beta_tab [q];
00471 betaY = betaC = beta * 3;
00472 if(s->width * s->height <= 176*144)
00473 betaY += beta;
00474
00475 avail[0] = 1;
00476 avail[1] = row;
00477 avail[2] = mb_x;
00478 avail[3] = row < s->mb_height - 1;
00479 for(i = 0; i < 4; i++){
00480 if(avail[i]){
00481 int pos = mb_pos + neighbour_offs_x[i] + neighbour_offs_y[i]*s->mb_stride;
00482 mvmasks[i] = r->deblock_coefs[pos];
00483 mbtype [i] = s->current_picture_ptr->mb_type[pos];
00484 cbp [i] = r->cbp_luma[pos];
00485 uvcbp[i][0] = r->cbp_chroma[pos] & 0xF;
00486 uvcbp[i][1] = r->cbp_chroma[pos] >> 4;
00487 }else{
00488 mvmasks[i] = 0;
00489 mbtype [i] = mbtype[0];
00490 cbp [i] = 0;
00491 uvcbp[i][0] = uvcbp[i][1] = 0;
00492 }
00493 mb_strong[i] = IS_INTRA(mbtype[i]) || IS_SEPARATE_DC(mbtype[i]);
00494 clip[i] = rv40_filter_clip_tbl[mb_strong[i] + 1][q];
00495 }
00496 y_to_deblock = mvmasks[POS_CUR]
00497 | (mvmasks[POS_BOTTOM] << 16);
00498
00499
00500
00501
00502
00503
00504 y_h_deblock = y_to_deblock
00505 | ((cbp[POS_CUR] << 4) & ~MASK_Y_TOP_ROW)
00506 | ((cbp[POS_TOP] & MASK_Y_LAST_ROW) >> 12);
00507
00508
00509
00510
00511
00512
00513 y_v_deblock = y_to_deblock
00514 | ((cbp[POS_CUR] << 1) & ~MASK_Y_LEFT_COL)
00515 | ((cbp[POS_LEFT] & MASK_Y_RIGHT_COL) >> 3);
00516 if(!mb_x)
00517 y_v_deblock &= ~MASK_Y_LEFT_COL;
00518 if(!row)
00519 y_h_deblock &= ~MASK_Y_TOP_ROW;
00520 if(row == s->mb_height - 1 || (mb_strong[POS_CUR] || mb_strong[POS_BOTTOM]))
00521 y_h_deblock &= ~(MASK_Y_TOP_ROW << 16);
00522
00523
00524
00525 for(i = 0; i < 2; i++){
00526 c_to_deblock[i] = (uvcbp[POS_BOTTOM][i] << 4) | uvcbp[POS_CUR][i];
00527 c_v_deblock[i] = c_to_deblock[i]
00528 | ((uvcbp[POS_CUR] [i] << 1) & ~MASK_C_LEFT_COL)
00529 | ((uvcbp[POS_LEFT][i] & MASK_C_RIGHT_COL) >> 1);
00530 c_h_deblock[i] = c_to_deblock[i]
00531 | ((uvcbp[POS_TOP][i] & MASK_C_LAST_ROW) >> 2)
00532 | (uvcbp[POS_CUR][i] << 2);
00533 if(!mb_x)
00534 c_v_deblock[i] &= ~MASK_C_LEFT_COL;
00535 if(!row)
00536 c_h_deblock[i] &= ~MASK_C_TOP_ROW;
00537 if(row == s->mb_height - 1 || mb_strong[POS_CUR] || mb_strong[POS_BOTTOM])
00538 c_h_deblock[i] &= ~(MASK_C_TOP_ROW << 4);
00539 }
00540
00541 for(j = 0; j < 16; j += 4){
00542 Y = s->current_picture_ptr->data[0] + mb_x*16 + (row*16 + j) * s->linesize;
00543 for(i = 0; i < 4; i++, Y += 4){
00544 int ij = i + j;
00545 int clip_cur = y_to_deblock & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
00546 int dither = j ? ij : i*4;
00547
00548
00549
00550 if(y_h_deblock & (MASK_BOTTOM << ij)){
00551 rv40_h_loop_filter(Y+4*s->linesize, s->linesize, dither,
00552 y_to_deblock & (MASK_BOTTOM << ij) ? clip[POS_CUR] : 0,
00553 clip_cur,
00554 alpha, beta, betaY, 0, 0);
00555 }
00556
00557 if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] || mb_strong[POS_LEFT]))){
00558 if(!i)
00559 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
00560 else
00561 clip_left = y_to_deblock & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
00562 rv40_v_loop_filter(Y, s->linesize, dither,
00563 clip_cur,
00564 clip_left,
00565 alpha, beta, betaY, 0, 0);
00566 }
00567
00568 if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] || mb_strong[POS_TOP])){
00569 rv40_h_loop_filter(Y, s->linesize, dither,
00570 clip_cur,
00571 mvmasks[POS_TOP] & (MASK_TOP << i) ? clip[POS_TOP] : 0,
00572 alpha, beta, betaY, 0, 1);
00573 }
00574
00575 if(y_v_deblock & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] || mb_strong[POS_LEFT])){
00576 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
00577 rv40_v_loop_filter(Y, s->linesize, dither,
00578 clip_cur,
00579 clip_left,
00580 alpha, beta, betaY, 0, 1);
00581 }
00582 }
00583 }
00584 for(k = 0; k < 2; k++){
00585 for(j = 0; j < 2; j++){
00586 C = s->current_picture_ptr->data[k+1] + mb_x*8 + (row*8 + j*4) * s->uvlinesize;
00587 for(i = 0; i < 2; i++, C += 4){
00588 int ij = i + j*2;
00589 int clip_cur = c_to_deblock[k] & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
00590 if(c_h_deblock[k] & (MASK_CUR << (ij+2))){
00591 int clip_bot = c_to_deblock[k] & (MASK_CUR << (ij+2)) ? clip[POS_CUR] : 0;
00592 rv40_h_loop_filter(C+4*s->uvlinesize, s->uvlinesize, i*8,
00593 clip_bot,
00594 clip_cur,
00595 alpha, beta, betaC, 1, 0);
00596 }
00597 if((c_v_deblock[k] & (MASK_CUR << ij)) && (i || !(mb_strong[POS_CUR] || mb_strong[POS_LEFT]))){
00598 if(!i)
00599 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
00600 else
00601 clip_left = c_to_deblock[k] & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
00602 rv40_v_loop_filter(C, s->uvlinesize, j*8,
00603 clip_cur,
00604 clip_left,
00605 alpha, beta, betaC, 1, 0);
00606 }
00607 if(!j && c_h_deblock[k] & (MASK_CUR << ij) && (mb_strong[POS_CUR] || mb_strong[POS_TOP])){
00608 int clip_top = uvcbp[POS_TOP][k] & (MASK_CUR << (ij+2)) ? clip[POS_TOP] : 0;
00609 rv40_h_loop_filter(C, s->uvlinesize, i*8,
00610 clip_cur,
00611 clip_top,
00612 alpha, beta, betaC, 1, 1);
00613 }
00614 if(c_v_deblock[k] & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] || mb_strong[POS_LEFT])){
00615 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
00616 rv40_v_loop_filter(C, s->uvlinesize, j*8,
00617 clip_cur,
00618 clip_left,
00619 alpha, beta, betaC, 1, 1);
00620 }
00621 }
00622 }
00623 }
00624 }
00625 }
00626
00630 static av_cold int rv40_decode_init(AVCodecContext *avctx)
00631 {
00632 RV34DecContext *r = avctx->priv_data;
00633
00634 r->rv30 = 0;
00635 ff_rv34_decode_init(avctx);
00636 if(!aic_top_vlc.bits)
00637 rv40_init_tables();
00638 r->parse_slice_header = rv40_parse_slice_header;
00639 r->decode_intra_types = rv40_decode_intra_types;
00640 r->decode_mb_info = rv40_decode_mb_info;
00641 r->loop_filter = rv40_loop_filter;
00642 r->luma_dc_quant_i = rv40_luma_dc_quant[0];
00643 r->luma_dc_quant_p = rv40_luma_dc_quant[1];
00644 return 0;
00645 }
00646
00647 AVCodec rv40_decoder = {
00648 "rv40",
00649 CODEC_TYPE_VIDEO,
00650 CODEC_ID_RV40,
00651 sizeof(RV34DecContext),
00652 rv40_decode_init,
00653 NULL,
00654 ff_rv34_decode_end,
00655 ff_rv34_decode_frame,
00656 CODEC_CAP_DR1 | CODEC_CAP_DELAY,
00657 .flush = ff_mpeg_flush,
00658 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 4.0"),
00659 .pix_fmts= ff_pixfmt_list_420,
00660 };