1/* 2 * RV30/40 decoder common data 3 * Copyright (c) 2007 Mike Melanson, Konstantin Shishkov 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 * RV30/40 decoder common data 25 */ 26 27#include "avcodec.h" 28#include "dsputil.h" 29#include "mpegvideo.h" 30#include "golomb.h" 31#include "mathops.h" 32#include "rectangle.h" 33 34#include "rv34vlc.h" 35#include "rv34data.h" 36#include "rv34.h" 37 38//#define DEBUG 39 40static inline void ZERO8x2(void* dst, int stride) 41{ 42 fill_rectangle(dst, 1, 2, stride, 0, 4); 43 fill_rectangle(((uint8_t*)(dst))+4, 1, 2, stride, 0, 4); 44} 45 46/** translation of RV30/40 macroblock types to lavc ones */ 47static const int rv34_mb_type_to_lavc[12] = { 48 MB_TYPE_INTRA, 49 MB_TYPE_INTRA16x16 | MB_TYPE_SEPARATE_DC, 50 MB_TYPE_16x16 | MB_TYPE_L0, 51 MB_TYPE_8x8 | MB_TYPE_L0, 52 MB_TYPE_16x16 | MB_TYPE_L0, 53 MB_TYPE_16x16 | MB_TYPE_L1, 54 MB_TYPE_SKIP, 55 MB_TYPE_DIRECT2 | MB_TYPE_16x16, 56 MB_TYPE_16x8 | MB_TYPE_L0, 57 MB_TYPE_8x16 | MB_TYPE_L0, 58 MB_TYPE_16x16 | MB_TYPE_L0L1, 59 MB_TYPE_16x16 | MB_TYPE_L0 | MB_TYPE_SEPARATE_DC 60}; 61 62 63static RV34VLC intra_vlcs[NUM_INTRA_TABLES], inter_vlcs[NUM_INTER_TABLES]; 64 65/** 66 * @defgroup vlc RV30/40 VLC generating functions 67 * @{ 68 */ 69 70static const int table_offs[] = { 71 0, 1818, 3622, 4144, 4698, 5234, 5804, 5868, 5900, 5932, 72 5996, 6252, 6316, 6348, 6380, 7674, 8944, 10274, 11668, 12250, 73 14060, 15846, 16372, 16962, 17512, 18148, 18180, 18212, 18244, 18308, 74 18564, 18628, 18660, 18692, 20036, 21314, 22648, 23968, 24614, 26384, 75 28190, 28736, 29366, 29938, 30608, 30640, 30672, 30704, 30768, 31024, 76 31088, 31120, 31184, 32570, 33898, 35236, 36644, 37286, 39020, 40802, 77 41368, 42052, 42692, 43348, 43380, 43412, 43444, 43476, 43604, 43668, 78 43700, 43732, 45100, 46430, 47778, 49160, 49802, 51550, 53340, 53972, 79 54648, 55348, 55994, 56122, 56154, 56186, 56218, 56346, 56410, 56442, 80 56474, 57878, 59290, 60636, 62036, 62682, 64460, 64524, 64588, 64716, 81 64844, 66076, 67466, 67978, 68542, 69064, 69648, 70296, 72010, 72074, 82 72138, 72202, 72330, 73572, 74936, 75454, 76030, 76566, 77176, 77822, 83 79582, 79646, 79678, 79742, 79870, 81180, 82536, 83064, 83672, 84242, 84 84934, 85576, 87384, 87448, 87480, 87544, 87672, 88982, 90340, 90902, 85 91598, 92182, 92846, 93488, 95246, 95278, 95310, 95374, 95502, 96878, 86 98266, 98848, 99542, 100234, 100884, 101524, 103320, 103352, 103384, 103416, 87 103480, 104874, 106222, 106910, 107584, 108258, 108902, 109544, 111366, 111398, 88 111430, 111462, 111494, 112878, 114320, 114988, 115660, 116310, 116950, 117592 89}; 90 91static VLC_TYPE table_data[117592][2]; 92 93/** 94 * Generate VLC from codeword lengths. 95 * @param bits codeword lengths (zeroes are accepted) 96 * @param size length of input data 97 * @param vlc output VLC 98 * @param insyms symbols for input codes (NULL for default ones) 99 * @param num VLC table number (for static initialization) 100 */ 101static void rv34_gen_vlc(const uint8_t *bits, int size, VLC *vlc, const uint8_t *insyms, 102 const int num) 103{ 104 int i; 105 int counts[17] = {0}, codes[17]; 106 uint16_t cw[size], syms[size]; 107 uint8_t bits2[size]; 108 int maxbits = 0, realsize = 0; 109 110 for(i = 0; i < size; i++){ 111 if(bits[i]){ 112 bits2[realsize] = bits[i]; 113 syms[realsize] = insyms ? insyms[i] : i; 114 realsize++; 115 maxbits = FFMAX(maxbits, bits[i]); 116 counts[bits[i]]++; 117 } 118 } 119 120 codes[0] = 0; 121 for(i = 0; i < 16; i++) 122 codes[i+1] = (codes[i] + counts[i]) << 1; 123 for(i = 0; i < realsize; i++) 124 cw[i] = codes[bits2[i]]++; 125 126 vlc->table = &table_data[table_offs[num]]; 127 vlc->table_allocated = table_offs[num + 1] - table_offs[num]; 128 init_vlc_sparse(vlc, FFMIN(maxbits, 9), realsize, 129 bits2, 1, 1, 130 cw, 2, 2, 131 syms, 2, 2, INIT_VLC_USE_NEW_STATIC); 132} 133 134/** 135 * Initialize all tables. 136 */ 137static av_cold void rv34_init_tables(void) 138{ 139 int i, j, k; 140 141 for(i = 0; i < NUM_INTRA_TABLES; i++){ 142 for(j = 0; j < 2; j++){ 143 rv34_gen_vlc(rv34_table_intra_cbppat [i][j], CBPPAT_VLC_SIZE, &intra_vlcs[i].cbppattern[j], NULL, 19*i + 0 + j); 144 rv34_gen_vlc(rv34_table_intra_secondpat[i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].second_pattern[j], NULL, 19*i + 2 + j); 145 rv34_gen_vlc(rv34_table_intra_thirdpat [i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].third_pattern[j], NULL, 19*i + 4 + j); 146 for(k = 0; k < 4; k++){ 147 rv34_gen_vlc(rv34_table_intra_cbp[i][j+k*2], CBP_VLC_SIZE, &intra_vlcs[i].cbp[j][k], rv34_cbp_code, 19*i + 6 + j*4 + k); 148 } 149 } 150 for(j = 0; j < 4; j++){ 151 rv34_gen_vlc(rv34_table_intra_firstpat[i][j], FIRSTBLK_VLC_SIZE, &intra_vlcs[i].first_pattern[j], NULL, 19*i + 14 + j); 152 } 153 rv34_gen_vlc(rv34_intra_coeff[i], COEFF_VLC_SIZE, &intra_vlcs[i].coefficient, NULL, 19*i + 18); 154 } 155 156 for(i = 0; i < NUM_INTER_TABLES; i++){ 157 rv34_gen_vlc(rv34_inter_cbppat[i], CBPPAT_VLC_SIZE, &inter_vlcs[i].cbppattern[0], NULL, i*12 + 95); 158 for(j = 0; j < 4; j++){ 159 rv34_gen_vlc(rv34_inter_cbp[i][j], CBP_VLC_SIZE, &inter_vlcs[i].cbp[0][j], rv34_cbp_code, i*12 + 96 + j); 160 } 161 for(j = 0; j < 2; j++){ 162 rv34_gen_vlc(rv34_table_inter_firstpat [i][j], FIRSTBLK_VLC_SIZE, &inter_vlcs[i].first_pattern[j], NULL, i*12 + 100 + j); 163 rv34_gen_vlc(rv34_table_inter_secondpat[i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].second_pattern[j], NULL, i*12 + 102 + j); 164 rv34_gen_vlc(rv34_table_inter_thirdpat [i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].third_pattern[j], NULL, i*12 + 104 + j); 165 } 166 rv34_gen_vlc(rv34_inter_coeff[i], COEFF_VLC_SIZE, &inter_vlcs[i].coefficient, NULL, i*12 + 106); 167 } 168} 169 170/** @} */ // vlc group 171 172 173/** 174 * @defgroup transform RV30/40 inverse transform functions 175 * @{ 176 */ 177 178static av_always_inline void rv34_row_transform(int temp[16], DCTELEM *block) 179{ 180 int i; 181 182 for(i=0; i<4; i++){ 183 const int z0= 13*(block[i+8*0] + block[i+8*2]); 184 const int z1= 13*(block[i+8*0] - block[i+8*2]); 185 const int z2= 7* block[i+8*1] - 17*block[i+8*3]; 186 const int z3= 17* block[i+8*1] + 7*block[i+8*3]; 187 188 temp[4*i+0]= z0+z3; 189 temp[4*i+1]= z1+z2; 190 temp[4*i+2]= z1-z2; 191 temp[4*i+3]= z0-z3; 192 } 193} 194 195/** 196 * Real Video 3.0/4.0 inverse transform 197 * Code is almost the same as in SVQ3, only scaling is different. 198 */ 199static void rv34_inv_transform(DCTELEM *block){ 200 int temp[16]; 201 int i; 202 203 rv34_row_transform(temp, block); 204 205 for(i=0; i<4; i++){ 206 const int z0= 13*(temp[4*0+i] + temp[4*2+i]) + 0x200; 207 const int z1= 13*(temp[4*0+i] - temp[4*2+i]) + 0x200; 208 const int z2= 7* temp[4*1+i] - 17*temp[4*3+i]; 209 const int z3= 17* temp[4*1+i] + 7*temp[4*3+i]; 210 211 block[i*8+0]= (z0 + z3)>>10; 212 block[i*8+1]= (z1 + z2)>>10; 213 block[i*8+2]= (z1 - z2)>>10; 214 block[i*8+3]= (z0 - z3)>>10; 215 } 216 217} 218 219/** 220 * RealVideo 3.0/4.0 inverse transform for DC block 221 * 222 * Code is almost the same as rv34_inv_transform() 223 * but final coefficients are multiplied by 1.5 and have no rounding. 224 */ 225static void rv34_inv_transform_noround(DCTELEM *block){ 226 int temp[16]; 227 int i; 228 229 rv34_row_transform(temp, block); 230 231 for(i=0; i<4; i++){ 232 const int z0= 13*(temp[4*0+i] + temp[4*2+i]); 233 const int z1= 13*(temp[4*0+i] - temp[4*2+i]); 234 const int z2= 7* temp[4*1+i] - 17*temp[4*3+i]; 235 const int z3= 17* temp[4*1+i] + 7*temp[4*3+i]; 236 237 block[i*8+0]= ((z0 + z3)*3)>>11; 238 block[i*8+1]= ((z1 + z2)*3)>>11; 239 block[i*8+2]= ((z1 - z2)*3)>>11; 240 block[i*8+3]= ((z0 - z3)*3)>>11; 241 } 242 243} 244 245/** @} */ // transform 246 247 248/** 249 * @defgroup block RV30/40 4x4 block decoding functions 250 * @{ 251 */ 252 253/** 254 * Decode coded block pattern. 255 */ 256static int rv34_decode_cbp(GetBitContext *gb, RV34VLC *vlc, int table) 257{ 258 int pattern, code, cbp=0; 259 int ones; 260 static const int cbp_masks[3] = {0x100000, 0x010000, 0x110000}; 261 static const int shifts[4] = { 0, 2, 8, 10 }; 262 const int *curshift = shifts; 263 int i, t, mask; 264 265 code = get_vlc2(gb, vlc->cbppattern[table].table, 9, 2); 266 pattern = code & 0xF; 267 code >>= 4; 268 269 ones = rv34_count_ones[pattern]; 270 271 for(mask = 8; mask; mask >>= 1, curshift++){ 272 if(pattern & mask) 273 cbp |= get_vlc2(gb, vlc->cbp[table][ones].table, vlc->cbp[table][ones].bits, 1) << curshift[0]; 274 } 275 276 for(i = 0; i < 4; i++){ 277 t = modulo_three_table[code][i]; 278 if(t == 1) 279 cbp |= cbp_masks[get_bits1(gb)] << i; 280 if(t == 2) 281 cbp |= cbp_masks[2] << i; 282 } 283 return cbp; 284} 285 286/** 287 * Get one coefficient value from the bistream and store it. 288 */ 289static inline void decode_coeff(DCTELEM *dst, int coef, int esc, GetBitContext *gb, VLC* vlc) 290{ 291 if(coef){ 292 if(coef == esc){ 293 coef = get_vlc2(gb, vlc->table, 9, 2); 294 if(coef > 23){ 295 coef -= 23; 296 coef = 22 + ((1 << coef) | get_bits(gb, coef)); 297 } 298 coef += esc; 299 } 300 if(get_bits1(gb)) 301 coef = -coef; 302 *dst = coef; 303 } 304} 305 306/** 307 * Decode 2x2 subblock of coefficients. 308 */ 309static inline void decode_subblock(DCTELEM *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc) 310{ 311 int coeffs[4]; 312 313 coeffs[0] = modulo_three_table[code][0]; 314 coeffs[1] = modulo_three_table[code][1]; 315 coeffs[2] = modulo_three_table[code][2]; 316 coeffs[3] = modulo_three_table[code][3]; 317 decode_coeff(dst , coeffs[0], 3, gb, vlc); 318 if(is_block2){ 319 decode_coeff(dst+8, coeffs[1], 2, gb, vlc); 320 decode_coeff(dst+1, coeffs[2], 2, gb, vlc); 321 }else{ 322 decode_coeff(dst+1, coeffs[1], 2, gb, vlc); 323 decode_coeff(dst+8, coeffs[2], 2, gb, vlc); 324 } 325 decode_coeff(dst+9, coeffs[3], 2, gb, vlc); 326} 327 328/** 329 * Decode coefficients for 4x4 block. 330 * 331 * This is done by filling 2x2 subblocks with decoded coefficients 332 * in this order (the same for subblocks and subblock coefficients): 333 * o--o 334 * / 335 * / 336 * o--o 337 */ 338 339static inline void rv34_decode_block(DCTELEM *dst, GetBitContext *gb, RV34VLC *rvlc, int fc, int sc) 340{ 341 int code, pattern; 342 343 code = get_vlc2(gb, rvlc->first_pattern[fc].table, 9, 2); 344 345 pattern = code & 0x7; 346 347 code >>= 3; 348 decode_subblock(dst, code, 0, gb, &rvlc->coefficient); 349 350 if(pattern & 4){ 351 code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2); 352 decode_subblock(dst + 2, code, 0, gb, &rvlc->coefficient); 353 } 354 if(pattern & 2){ // Looks like coefficients 1 and 2 are swapped for this block 355 code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2); 356 decode_subblock(dst + 8*2, code, 1, gb, &rvlc->coefficient); 357 } 358 if(pattern & 1){ 359 code = get_vlc2(gb, rvlc->third_pattern[sc].table, 9, 2); 360 decode_subblock(dst + 8*2+2, code, 0, gb, &rvlc->coefficient); 361 } 362 363} 364 365/** 366 * Dequantize ordinary 4x4 block. 367 * @todo optimize 368 */ 369static inline void rv34_dequant4x4(DCTELEM *block, int Qdc, int Q) 370{ 371 int i, j; 372 373 block[0] = (block[0] * Qdc + 8) >> 4; 374 for(i = 0; i < 4; i++) 375 for(j = !i; j < 4; j++) 376 block[j + i*8] = (block[j + i*8] * Q + 8) >> 4; 377} 378 379/** 380 * Dequantize 4x4 block of DC values for 16x16 macroblock. 381 * @todo optimize 382 */ 383static inline void rv34_dequant4x4_16x16(DCTELEM *block, int Qdc, int Q) 384{ 385 int i; 386 387 for(i = 0; i < 3; i++) 388 block[rv34_dezigzag[i]] = (block[rv34_dezigzag[i]] * Qdc + 8) >> 4; 389 for(; i < 16; i++) 390 block[rv34_dezigzag[i]] = (block[rv34_dezigzag[i]] * Q + 8) >> 4; 391} 392/** @} */ //block functions 393 394 395/** 396 * @defgroup bitstream RV30/40 bitstream parsing 397 * @{ 398 */ 399 400/** 401 * Decode starting slice position. 402 * @todo Maybe replace with ff_h263_decode_mba() ? 403 */ 404int ff_rv34_get_start_offset(GetBitContext *gb, int mb_size) 405{ 406 int i; 407 for(i = 0; i < 5; i++) 408 if(rv34_mb_max_sizes[i] >= mb_size - 1) 409 break; 410 return rv34_mb_bits_sizes[i]; 411} 412 413/** 414 * Select VLC set for decoding from current quantizer, modifier and frame type. 415 */ 416static inline RV34VLC* choose_vlc_set(int quant, int mod, int type) 417{ 418 if(mod == 2 && quant < 19) quant += 10; 419 else if(mod && quant < 26) quant += 5; 420 return type ? &inter_vlcs[rv34_quant_to_vlc_set[1][av_clip(quant, 0, 30)]] 421 : &intra_vlcs[rv34_quant_to_vlc_set[0][av_clip(quant, 0, 30)]]; 422} 423 424/** 425 * Decode quantizer difference and return modified quantizer. 426 */ 427static inline int rv34_decode_dquant(GetBitContext *gb, int quant) 428{ 429 if(get_bits1(gb)) 430 return rv34_dquant_tab[get_bits1(gb)][quant]; 431 else 432 return get_bits(gb, 5); 433} 434 435/** @} */ //bitstream functions 436 437/** 438 * @defgroup mv motion vector related code (prediction, reconstruction, motion compensation) 439 * @{ 440 */ 441 442/** macroblock partition width in 8x8 blocks */ 443static const uint8_t part_sizes_w[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2 }; 444 445/** macroblock partition height in 8x8 blocks */ 446static const uint8_t part_sizes_h[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2 }; 447 448/** availability index for subblocks */ 449static const uint8_t avail_indexes[4] = { 6, 7, 10, 11 }; 450 451/** 452 * motion vector prediction 453 * 454 * Motion prediction performed for the block by using median prediction of 455 * motion vectors from the left, top and right top blocks but in corner cases 456 * some other vectors may be used instead. 457 */ 458static void rv34_pred_mv(RV34DecContext *r, int block_type, int subblock_no, int dmv_no) 459{ 460 MpegEncContext *s = &r->s; 461 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; 462 int A[2] = {0}, B[2], C[2]; 463 int i, j; 464 int mx, my; 465 int avail_index = avail_indexes[subblock_no]; 466 int c_off = part_sizes_w[block_type]; 467 468 mv_pos += (subblock_no & 1) + (subblock_no >> 1)*s->b8_stride; 469 if(subblock_no == 3) 470 c_off = -1; 471 472 if(r->avail_cache[avail_index - 1]){ 473 A[0] = s->current_picture_ptr->motion_val[0][mv_pos-1][0]; 474 A[1] = s->current_picture_ptr->motion_val[0][mv_pos-1][1]; 475 } 476 if(r->avail_cache[avail_index - 4]){ 477 B[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][0]; 478 B[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][1]; 479 }else{ 480 B[0] = A[0]; 481 B[1] = A[1]; 482 } 483 if(!r->avail_cache[avail_index - 4 + c_off]){ 484 if(r->avail_cache[avail_index - 4] && (r->avail_cache[avail_index - 1] || r->rv30)){ 485 C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][0]; 486 C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][1]; 487 }else{ 488 C[0] = A[0]; 489 C[1] = A[1]; 490 } 491 }else{ 492 C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][0]; 493 C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][1]; 494 } 495 mx = mid_pred(A[0], B[0], C[0]); 496 my = mid_pred(A[1], B[1], C[1]); 497 mx += r->dmv[dmv_no][0]; 498 my += r->dmv[dmv_no][1]; 499 for(j = 0; j < part_sizes_h[block_type]; j++){ 500 for(i = 0; i < part_sizes_w[block_type]; i++){ 501 s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][0] = mx; 502 s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][1] = my; 503 } 504 } 505} 506 507#define GET_PTS_DIFF(a, b) ((a - b + 8192) & 0x1FFF) 508 509/** 510 * Calculate motion vector component that should be added for direct blocks. 511 */ 512static int calc_add_mv(RV34DecContext *r, int dir, int val) 513{ 514 int refdist = GET_PTS_DIFF(r->next_pts, r->last_pts); 515 int dist = dir ? -GET_PTS_DIFF(r->next_pts, r->cur_pts) : GET_PTS_DIFF(r->cur_pts, r->last_pts); 516 int mul; 517 518 if(!refdist) return 0; 519 mul = (dist << 14) / refdist; 520 return (val * mul + 0x2000) >> 14; 521} 522 523/** 524 * Predict motion vector for B-frame macroblock. 525 */ 526static inline void rv34_pred_b_vector(int A[2], int B[2], int C[2], 527 int A_avail, int B_avail, int C_avail, 528 int *mx, int *my) 529{ 530 if(A_avail + B_avail + C_avail != 3){ 531 *mx = A[0] + B[0] + C[0]; 532 *my = A[1] + B[1] + C[1]; 533 if(A_avail + B_avail + C_avail == 2){ 534 *mx /= 2; 535 *my /= 2; 536 } 537 }else{ 538 *mx = mid_pred(A[0], B[0], C[0]); 539 *my = mid_pred(A[1], B[1], C[1]); 540 } 541} 542 543/** 544 * motion vector prediction for B-frames 545 */ 546static void rv34_pred_mv_b(RV34DecContext *r, int block_type, int dir) 547{ 548 MpegEncContext *s = &r->s; 549 int mb_pos = s->mb_x + s->mb_y * s->mb_stride; 550 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; 551 int A[2], B[2], C[2]; 552 int has_A = 0, has_B = 0, has_C = 0; 553 int mx, my; 554 int i, j; 555 Picture *cur_pic = s->current_picture_ptr; 556 const int mask = dir ? MB_TYPE_L1 : MB_TYPE_L0; 557 int type = cur_pic->mb_type[mb_pos]; 558 559 memset(A, 0, sizeof(A)); 560 memset(B, 0, sizeof(B)); 561 memset(C, 0, sizeof(C)); 562 if((r->avail_cache[6-1] & type) & mask){ 563 A[0] = cur_pic->motion_val[dir][mv_pos - 1][0]; 564 A[1] = cur_pic->motion_val[dir][mv_pos - 1][1]; 565 has_A = 1; 566 } 567 if((r->avail_cache[6-4] & type) & mask){ 568 B[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][0]; 569 B[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][1]; 570 has_B = 1; 571 } 572 if(r->avail_cache[6-4] && (r->avail_cache[6-2] & type) & mask){ 573 C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][0]; 574 C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][1]; 575 has_C = 1; 576 }else if((s->mb_x+1) == s->mb_width && (r->avail_cache[6-5] & type) & mask){ 577 C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][0]; 578 C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][1]; 579 has_C = 1; 580 } 581 582 rv34_pred_b_vector(A, B, C, has_A, has_B, has_C, &mx, &my); 583 584 mx += r->dmv[dir][0]; 585 my += r->dmv[dir][1]; 586 587 for(j = 0; j < 2; j++){ 588 for(i = 0; i < 2; i++){ 589 cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][0] = mx; 590 cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][1] = my; 591 } 592 } 593 if(block_type == RV34_MB_B_BACKWARD || block_type == RV34_MB_B_FORWARD){ 594 ZERO8x2(cur_pic->motion_val[!dir][mv_pos], s->b8_stride); 595 } 596} 597 598/** 599 * motion vector prediction - RV3 version 600 */ 601static void rv34_pred_mv_rv3(RV34DecContext *r, int block_type, int dir) 602{ 603 MpegEncContext *s = &r->s; 604 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; 605 int A[2] = {0}, B[2], C[2]; 606 int i, j, k; 607 int mx, my; 608 int avail_index = avail_indexes[0]; 609 610 if(r->avail_cache[avail_index - 1]){ 611 A[0] = s->current_picture_ptr->motion_val[0][mv_pos-1][0]; 612 A[1] = s->current_picture_ptr->motion_val[0][mv_pos-1][1]; 613 } 614 if(r->avail_cache[avail_index - 4]){ 615 B[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][0]; 616 B[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][1]; 617 }else{ 618 B[0] = A[0]; 619 B[1] = A[1]; 620 } 621 if(!r->avail_cache[avail_index - 4 + 2]){ 622 if(r->avail_cache[avail_index - 4] && (r->avail_cache[avail_index - 1])){ 623 C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][0]; 624 C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][1]; 625 }else{ 626 C[0] = A[0]; 627 C[1] = A[1]; 628 } 629 }else{ 630 C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+2][0]; 631 C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+2][1]; 632 } 633 mx = mid_pred(A[0], B[0], C[0]); 634 my = mid_pred(A[1], B[1], C[1]); 635 mx += r->dmv[0][0]; 636 my += r->dmv[0][1]; 637 for(j = 0; j < 2; j++){ 638 for(i = 0; i < 2; i++){ 639 for(k = 0; k < 2; k++){ 640 s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][0] = mx; 641 s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][1] = my; 642 } 643 } 644 } 645} 646 647static const int chroma_coeffs[3] = { 0, 3, 5 }; 648 649/** 650 * generic motion compensation function 651 * 652 * @param r decoder context 653 * @param block_type type of the current block 654 * @param xoff horizontal offset from the start of the current block 655 * @param yoff vertical offset from the start of the current block 656 * @param mv_off offset to the motion vector information 657 * @param width width of the current partition in 8x8 blocks 658 * @param height height of the current partition in 8x8 blocks 659 * @param dir motion compensation direction (i.e. from the last or the next reference frame) 660 * @param thirdpel motion vectors are specified in 1/3 of pixel 661 * @param qpel_mc a set of functions used to perform luma motion compensation 662 * @param chroma_mc a set of functions used to perform chroma motion compensation 663 */ 664static inline void rv34_mc(RV34DecContext *r, const int block_type, 665 const int xoff, const int yoff, int mv_off, 666 const int width, const int height, int dir, 667 const int thirdpel, 668 qpel_mc_func (*qpel_mc)[16], 669 h264_chroma_mc_func (*chroma_mc)) 670{ 671 MpegEncContext *s = &r->s; 672 uint8_t *Y, *U, *V, *srcY, *srcU, *srcV; 673 int dxy, mx, my, umx, umy, lx, ly, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y; 674 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride + mv_off; 675 int is16x16 = 1; 676 677 if(thirdpel){ 678 int chroma_mx, chroma_my; 679 mx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) / 3 - (1 << 24); 680 my = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) / 3 - (1 << 24); 681 lx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) % 3; 682 ly = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) % 3; 683 chroma_mx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + 1) >> 1; 684 chroma_my = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + 1) >> 1; 685 umx = (chroma_mx + (3 << 24)) / 3 - (1 << 24); 686 umy = (chroma_my + (3 << 24)) / 3 - (1 << 24); 687 uvmx = chroma_coeffs[(chroma_mx + (3 << 24)) % 3]; 688 uvmy = chroma_coeffs[(chroma_my + (3 << 24)) % 3]; 689 }else{ 690 int cx, cy; 691 mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] >> 2; 692 my = s->current_picture_ptr->motion_val[dir][mv_pos][1] >> 2; 693 lx = s->current_picture_ptr->motion_val[dir][mv_pos][0] & 3; 694 ly = s->current_picture_ptr->motion_val[dir][mv_pos][1] & 3; 695 cx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2; 696 cy = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2; 697 umx = cx >> 2; 698 umy = cy >> 2; 699 uvmx = (cx & 3) << 1; 700 uvmy = (cy & 3) << 1; 701 //due to some flaw RV40 uses the same MC compensation routine for H2V2 and H3V3 702 if(uvmx == 6 && uvmy == 6) 703 uvmx = uvmy = 4; 704 } 705 dxy = ly*4 + lx; 706 srcY = dir ? s->next_picture_ptr->data[0] : s->last_picture_ptr->data[0]; 707 srcU = dir ? s->next_picture_ptr->data[1] : s->last_picture_ptr->data[1]; 708 srcV = dir ? s->next_picture_ptr->data[2] : s->last_picture_ptr->data[2]; 709 src_x = s->mb_x * 16 + xoff + mx; 710 src_y = s->mb_y * 16 + yoff + my; 711 uvsrc_x = s->mb_x * 8 + (xoff >> 1) + umx; 712 uvsrc_y = s->mb_y * 8 + (yoff >> 1) + umy; 713 srcY += src_y * s->linesize + src_x; 714 srcU += uvsrc_y * s->uvlinesize + uvsrc_x; 715 srcV += uvsrc_y * s->uvlinesize + uvsrc_x; 716 if( (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 4 717 || (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 4){ 718 uint8_t *uvbuf= s->edge_emu_buffer + 22 * s->linesize; 719 720 srcY -= 2 + 2*s->linesize; 721 ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, (width<<3)+6, (height<<3)+6, 722 src_x - 2, src_y - 2, s->h_edge_pos, s->v_edge_pos); 723 srcY = s->edge_emu_buffer + 2 + 2*s->linesize; 724 ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, (width<<2)+1, (height<<2)+1, 725 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); 726 ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, (width<<2)+1, (height<<2)+1, 727 uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); 728 srcU = uvbuf; 729 srcV = uvbuf + 16; 730 } 731 Y = s->dest[0] + xoff + yoff *s->linesize; 732 U = s->dest[1] + (xoff>>1) + (yoff>>1)*s->uvlinesize; 733 V = s->dest[2] + (xoff>>1) + (yoff>>1)*s->uvlinesize; 734 735 if(block_type == RV34_MB_P_16x8){ 736 qpel_mc[1][dxy](Y, srcY, s->linesize); 737 Y += 8; 738 srcY += 8; 739 }else if(block_type == RV34_MB_P_8x16){ 740 qpel_mc[1][dxy](Y, srcY, s->linesize); 741 Y += 8 * s->linesize; 742 srcY += 8 * s->linesize; 743 } 744 is16x16 = (block_type != RV34_MB_P_8x8) && (block_type != RV34_MB_P_16x8) && (block_type != RV34_MB_P_8x16); 745 qpel_mc[!is16x16][dxy](Y, srcY, s->linesize); 746 chroma_mc[2-width] (U, srcU, s->uvlinesize, height*4, uvmx, uvmy); 747 chroma_mc[2-width] (V, srcV, s->uvlinesize, height*4, uvmx, uvmy); 748} 749 750static void rv34_mc_1mv(RV34DecContext *r, const int block_type, 751 const int xoff, const int yoff, int mv_off, 752 const int width, const int height, int dir) 753{ 754 rv34_mc(r, block_type, xoff, yoff, mv_off, width, height, dir, r->rv30, 755 r->rv30 ? r->s.dsp.put_rv30_tpel_pixels_tab 756 : r->s.dsp.put_rv40_qpel_pixels_tab, 757 r->rv30 ? r->s.dsp.put_h264_chroma_pixels_tab 758 : r->s.dsp.put_rv40_chroma_pixels_tab); 759} 760 761static void rv34_mc_2mv(RV34DecContext *r, const int block_type) 762{ 763 rv34_mc(r, block_type, 0, 0, 0, 2, 2, 0, r->rv30, 764 r->rv30 ? r->s.dsp.put_rv30_tpel_pixels_tab 765 : r->s.dsp.put_rv40_qpel_pixels_tab, 766 r->rv30 ? r->s.dsp.put_h264_chroma_pixels_tab 767 : r->s.dsp.put_rv40_chroma_pixels_tab); 768 rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 769 r->rv30 ? r->s.dsp.avg_rv30_tpel_pixels_tab 770 : r->s.dsp.avg_rv40_qpel_pixels_tab, 771 r->rv30 ? r->s.dsp.avg_h264_chroma_pixels_tab 772 : r->s.dsp.avg_rv40_chroma_pixels_tab); 773} 774 775static void rv34_mc_2mv_skip(RV34DecContext *r) 776{ 777 int i, j; 778 for(j = 0; j < 2; j++) 779 for(i = 0; i < 2; i++){ 780 rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 0, r->rv30, 781 r->rv30 ? r->s.dsp.put_rv30_tpel_pixels_tab 782 : r->s.dsp.put_rv40_qpel_pixels_tab, 783 r->rv30 ? r->s.dsp.put_h264_chroma_pixels_tab 784 : r->s.dsp.put_rv40_chroma_pixels_tab); 785 rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 1, r->rv30, 786 r->rv30 ? r->s.dsp.avg_rv30_tpel_pixels_tab 787 : r->s.dsp.avg_rv40_qpel_pixels_tab, 788 r->rv30 ? r->s.dsp.avg_h264_chroma_pixels_tab 789 : r->s.dsp.avg_rv40_chroma_pixels_tab); 790 } 791} 792 793/** number of motion vectors in each macroblock type */ 794static const int num_mvs[RV34_MB_TYPES] = { 0, 0, 1, 4, 1, 1, 0, 0, 2, 2, 2, 1 }; 795 796/** 797 * Decode motion vector differences 798 * and perform motion vector reconstruction and motion compensation. 799 */ 800static int rv34_decode_mv(RV34DecContext *r, int block_type) 801{ 802 MpegEncContext *s = &r->s; 803 GetBitContext *gb = &s->gb; 804 int i, j, k, l; 805 int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; 806 int next_bt; 807 808 memset(r->dmv, 0, sizeof(r->dmv)); 809 for(i = 0; i < num_mvs[block_type]; i++){ 810 r->dmv[i][0] = svq3_get_se_golomb(gb); 811 r->dmv[i][1] = svq3_get_se_golomb(gb); 812 } 813 switch(block_type){ 814 case RV34_MB_TYPE_INTRA: 815 case RV34_MB_TYPE_INTRA16x16: 816 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); 817 return 0; 818 case RV34_MB_SKIP: 819 if(s->pict_type == FF_P_TYPE){ 820 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); 821 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0); 822 break; 823 } 824 case RV34_MB_B_DIRECT: 825 //surprisingly, it uses motion scheme from next reference frame 826 next_bt = s->next_picture_ptr->mb_type[s->mb_x + s->mb_y * s->mb_stride]; 827 if(IS_INTRA(next_bt) || IS_SKIP(next_bt)){ 828 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); 829 ZERO8x2(s->current_picture_ptr->motion_val[1][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); 830 }else 831 for(j = 0; j < 2; j++) 832 for(i = 0; i < 2; i++) 833 for(k = 0; k < 2; k++) 834 for(l = 0; l < 2; l++) 835 s->current_picture_ptr->motion_val[l][mv_pos + i + j*s->b8_stride][k] = calc_add_mv(r, l, s->next_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][k]); 836 if(!(IS_16X8(next_bt) || IS_8X16(next_bt) || IS_8X8(next_bt))) //we can use whole macroblock MC 837 rv34_mc_2mv(r, block_type); 838 else 839 rv34_mc_2mv_skip(r); 840 ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); 841 break; 842 case RV34_MB_P_16x16: 843 case RV34_MB_P_MIX16x16: 844 rv34_pred_mv(r, block_type, 0, 0); 845 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0); 846 break; 847 case RV34_MB_B_FORWARD: 848 case RV34_MB_B_BACKWARD: 849 r->dmv[1][0] = r->dmv[0][0]; 850 r->dmv[1][1] = r->dmv[0][1]; 851 if(r->rv30) 852 rv34_pred_mv_rv3(r, block_type, block_type == RV34_MB_B_BACKWARD); 853 else 854 rv34_pred_mv_b (r, block_type, block_type == RV34_MB_B_BACKWARD); 855 rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, block_type == RV34_MB_B_BACKWARD); 856 break; 857 case RV34_MB_P_16x8: 858 case RV34_MB_P_8x16: 859 rv34_pred_mv(r, block_type, 0, 0); 860 rv34_pred_mv(r, block_type, 1 + (block_type == RV34_MB_P_16x8), 1); 861 if(block_type == RV34_MB_P_16x8){ 862 rv34_mc_1mv(r, block_type, 0, 0, 0, 2, 1, 0); 863 rv34_mc_1mv(r, block_type, 0, 8, s->b8_stride, 2, 1, 0); 864 } 865 if(block_type == RV34_MB_P_8x16){ 866 rv34_mc_1mv(r, block_type, 0, 0, 0, 1, 2, 0); 867 rv34_mc_1mv(r, block_type, 8, 0, 1, 1, 2, 0); 868 } 869 break; 870 case RV34_MB_B_BIDIR: 871 rv34_pred_mv_b (r, block_type, 0); 872 rv34_pred_mv_b (r, block_type, 1); 873 rv34_mc_2mv (r, block_type); 874 break; 875 case RV34_MB_P_8x8: 876 for(i=0;i< 4;i++){ 877 rv34_pred_mv(r, block_type, i, i); 878 rv34_mc_1mv (r, block_type, (i&1)<<3, (i&2)<<2, (i&1)+(i>>1)*s->b8_stride, 1, 1, 0); 879 } 880 break; 881 } 882 883 return 0; 884} 885/** @} */ // mv group 886 887/** 888 * @defgroup recons Macroblock reconstruction functions 889 * @{ 890 */ 891/** mapping of RV30/40 intra prediction types to standard H.264 types */ 892static const int ittrans[9] = { 893 DC_PRED, VERT_PRED, HOR_PRED, DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_LEFT_PRED, 894 VERT_RIGHT_PRED, VERT_LEFT_PRED, HOR_UP_PRED, HOR_DOWN_PRED, 895}; 896 897/** mapping of RV30/40 intra 16x16 prediction types to standard H.264 types */ 898static const int ittrans16[4] = { 899 DC_PRED8x8, VERT_PRED8x8, HOR_PRED8x8, PLANE_PRED8x8, 900}; 901 902/** 903 * Perform 4x4 intra prediction. 904 */ 905static void rv34_pred_4x4_block(RV34DecContext *r, uint8_t *dst, int stride, int itype, int up, int left, int down, int right) 906{ 907 uint8_t *prev = dst - stride + 4; 908 uint32_t topleft; 909 910 if(!up && !left) 911 itype = DC_128_PRED; 912 else if(!up){ 913 if(itype == VERT_PRED) itype = HOR_PRED; 914 if(itype == DC_PRED) itype = LEFT_DC_PRED; 915 }else if(!left){ 916 if(itype == HOR_PRED) itype = VERT_PRED; 917 if(itype == DC_PRED) itype = TOP_DC_PRED; 918 if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN; 919 } 920 if(!down){ 921 if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN; 922 if(itype == HOR_UP_PRED) itype = HOR_UP_PRED_RV40_NODOWN; 923 if(itype == VERT_LEFT_PRED) itype = VERT_LEFT_PRED_RV40_NODOWN; 924 } 925 if(!right && up){ 926 topleft = dst[-stride + 3] * 0x01010101; 927 prev = (uint8_t*)&topleft; 928 } 929 r->h.pred4x4[itype](dst, prev, stride); 930} 931 932/** add_pixels_clamped for 4x4 block */ 933static void rv34_add_4x4_block(uint8_t *dst, int stride, DCTELEM block[64], int off) 934{ 935 int x, y; 936 for(y = 0; y < 4; y++) 937 for(x = 0; x < 4; x++) 938 dst[x + y*stride] = av_clip_uint8(dst[x + y*stride] + block[off + x+y*8]); 939} 940 941static inline int adjust_pred16(int itype, int up, int left) 942{ 943 if(!up && !left) 944 itype = DC_128_PRED8x8; 945 else if(!up){ 946 if(itype == PLANE_PRED8x8)itype = HOR_PRED8x8; 947 if(itype == VERT_PRED8x8) itype = HOR_PRED8x8; 948 if(itype == DC_PRED8x8) itype = LEFT_DC_PRED8x8; 949 }else if(!left){ 950 if(itype == PLANE_PRED8x8)itype = VERT_PRED8x8; 951 if(itype == HOR_PRED8x8) itype = VERT_PRED8x8; 952 if(itype == DC_PRED8x8) itype = TOP_DC_PRED8x8; 953 } 954 return itype; 955} 956 957static void rv34_output_macroblock(RV34DecContext *r, int8_t *intra_types, int cbp, int is16) 958{ 959 MpegEncContext *s = &r->s; 960 DSPContext *dsp = &s->dsp; 961 int i, j; 962 uint8_t *Y, *U, *V; 963 int itype; 964 int avail[6*8] = {0}; 965 int idx; 966 967 // Set neighbour information. 968 if(r->avail_cache[1]) 969 avail[0] = 1; 970 if(r->avail_cache[2]) 971 avail[1] = avail[2] = 1; 972 if(r->avail_cache[3]) 973 avail[3] = avail[4] = 1; 974 if(r->avail_cache[4]) 975 avail[5] = 1; 976 if(r->avail_cache[5]) 977 avail[8] = avail[16] = 1; 978 if(r->avail_cache[9]) 979 avail[24] = avail[32] = 1; 980 981 Y = s->dest[0]; 982 U = s->dest[1]; 983 V = s->dest[2]; 984 if(!is16){ 985 for(j = 0; j < 4; j++){ 986 idx = 9 + j*8; 987 for(i = 0; i < 4; i++, cbp >>= 1, Y += 4, idx++){ 988 rv34_pred_4x4_block(r, Y, s->linesize, ittrans[intra_types[i]], avail[idx-8], avail[idx-1], avail[idx+7], avail[idx-7]); 989 avail[idx] = 1; 990 if(cbp & 1) 991 rv34_add_4x4_block(Y, s->linesize, s->block[(i>>1)+(j&2)], (i&1)*4+(j&1)*32); 992 } 993 Y += s->linesize * 4 - 4*4; 994 intra_types += r->intra_types_stride; 995 } 996 intra_types -= r->intra_types_stride * 4; 997 fill_rectangle(r->avail_cache + 6, 2, 2, 4, 0, 4); 998 for(j = 0; j < 2; j++){ 999 idx = 6 + j*4; 1000 for(i = 0; i < 2; i++, cbp >>= 1, idx++){ 1001 rv34_pred_4x4_block(r, U + i*4 + j*4*s->uvlinesize, s->uvlinesize, ittrans[intra_types[i*2+j*2*r->intra_types_stride]], r->avail_cache[idx-4], r->avail_cache[idx-1], !i && !j, r->avail_cache[idx-3]); 1002 rv34_pred_4x4_block(r, V + i*4 + j*4*s->uvlinesize, s->uvlinesize, ittrans[intra_types[i*2+j*2*r->intra_types_stride]], r->avail_cache[idx-4], r->avail_cache[idx-1], !i && !j, r->avail_cache[idx-3]); 1003 r->avail_cache[idx] = 1; 1004 if(cbp & 0x01) 1005 rv34_add_4x4_block(U + i*4 + j*4*s->uvlinesize, s->uvlinesize, s->block[4], i*4+j*32); 1006 if(cbp & 0x10) 1007 rv34_add_4x4_block(V + i*4 + j*4*s->uvlinesize, s->uvlinesize, s->block[5], i*4+j*32); 1008 } 1009 } 1010 }else{ 1011 itype = ittrans16[intra_types[0]]; 1012 itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]); 1013 r->h.pred16x16[itype](Y, s->linesize); 1014 dsp->add_pixels_clamped(s->block[0], Y, s->linesize); 1015 dsp->add_pixels_clamped(s->block[1], Y + 8, s->linesize); 1016 Y += s->linesize * 8; 1017 dsp->add_pixels_clamped(s->block[2], Y, s->linesize); 1018 dsp->add_pixels_clamped(s->block[3], Y + 8, s->linesize); 1019 1020 itype = ittrans16[intra_types[0]]; 1021 if(itype == PLANE_PRED8x8) itype = DC_PRED8x8; 1022 itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]); 1023 r->h.pred8x8[itype](U, s->uvlinesize); 1024 dsp->add_pixels_clamped(s->block[4], U, s->uvlinesize); 1025 r->h.pred8x8[itype](V, s->uvlinesize); 1026 dsp->add_pixels_clamped(s->block[5], V, s->uvlinesize); 1027 } 1028} 1029 1030/** @} */ // recons group 1031 1032/** 1033 * @addtogroup bitstream 1034 * Decode macroblock header and return CBP in case of success, -1 otherwise. 1035 */ 1036static int rv34_decode_mb_header(RV34DecContext *r, int8_t *intra_types) 1037{ 1038 MpegEncContext *s = &r->s; 1039 GetBitContext *gb = &s->gb; 1040 int mb_pos = s->mb_x + s->mb_y * s->mb_stride; 1041 int i, t; 1042 1043 if(!r->si.type){ 1044 r->is16 = get_bits1(gb); 1045 if(!r->is16 && !r->rv30){ 1046 if(!get_bits1(gb)) 1047 av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n"); 1048 } 1049 s->current_picture_ptr->mb_type[mb_pos] = r->is16 ? MB_TYPE_INTRA16x16 : MB_TYPE_INTRA; 1050 r->block_type = r->is16 ? RV34_MB_TYPE_INTRA16x16 : RV34_MB_TYPE_INTRA; 1051 }else{ 1052 r->block_type = r->decode_mb_info(r); 1053 if(r->block_type == -1) 1054 return -1; 1055 s->current_picture_ptr->mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type]; 1056 r->mb_type[mb_pos] = r->block_type; 1057 if(r->block_type == RV34_MB_SKIP){ 1058 if(s->pict_type == FF_P_TYPE) 1059 r->mb_type[mb_pos] = RV34_MB_P_16x16; 1060 if(s->pict_type == FF_B_TYPE) 1061 r->mb_type[mb_pos] = RV34_MB_B_DIRECT; 1062 } 1063 r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->mb_type[mb_pos]); 1064 rv34_decode_mv(r, r->block_type); 1065 if(r->block_type == RV34_MB_SKIP){ 1066 fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0])); 1067 return 0; 1068 } 1069 r->chroma_vlc = 1; 1070 r->luma_vlc = 0; 1071 } 1072 if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){ 1073 if(r->is16){ 1074 t = get_bits(gb, 2); 1075 fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0])); 1076 r->luma_vlc = 2; 1077 }else{ 1078 if(r->decode_intra_types(r, gb, intra_types) < 0) 1079 return -1; 1080 r->luma_vlc = 1; 1081 } 1082 r->chroma_vlc = 0; 1083 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0); 1084 }else{ 1085 for(i = 0; i < 16; i++) 1086 intra_types[(i & 3) + (i>>2) * r->intra_types_stride] = 0; 1087 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1); 1088 if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){ 1089 r->is16 = 1; 1090 r->chroma_vlc = 1; 1091 r->luma_vlc = 2; 1092 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0); 1093 } 1094 } 1095 1096 return rv34_decode_cbp(gb, r->cur_vlcs, r->is16); 1097} 1098 1099/** 1100 * @addtogroup recons 1101 * @{ 1102 */ 1103/** 1104 * mask for retrieving all bits in coded block pattern 1105 * corresponding to one 8x8 block 1106 */ 1107#define LUMA_CBP_BLOCK_MASK 0x33 1108 1109#define U_CBP_MASK 0x0F0000 1110#define V_CBP_MASK 0xF00000 1111 1112 1113static void rv34_apply_differences(RV34DecContext *r, int cbp) 1114{ 1115 static const int shifts[4] = { 0, 2, 8, 10 }; 1116 MpegEncContext *s = &r->s; 1117 int i; 1118 1119 for(i = 0; i < 4; i++) 1120 if((cbp & (LUMA_CBP_BLOCK_MASK << shifts[i])) || r->block_type == RV34_MB_P_MIX16x16) 1121 s->dsp.add_pixels_clamped(s->block[i], s->dest[0] + (i & 1)*8 + (i&2)*4*s->linesize, s->linesize); 1122 if(cbp & U_CBP_MASK) 1123 s->dsp.add_pixels_clamped(s->block[4], s->dest[1], s->uvlinesize); 1124 if(cbp & V_CBP_MASK) 1125 s->dsp.add_pixels_clamped(s->block[5], s->dest[2], s->uvlinesize); 1126} 1127 1128static int is_mv_diff_gt_3(int16_t (*motion_val)[2], int step) 1129{ 1130 int d; 1131 d = motion_val[0][0] - motion_val[-step][0]; 1132 if(d < -3 || d > 3) 1133 return 1; 1134 d = motion_val[0][1] - motion_val[-step][1]; 1135 if(d < -3 || d > 3) 1136 return 1; 1137 return 0; 1138} 1139 1140static int rv34_set_deblock_coef(RV34DecContext *r) 1141{ 1142 MpegEncContext *s = &r->s; 1143 int hmvmask = 0, vmvmask = 0, i, j; 1144 int midx = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; 1145 int16_t (*motion_val)[2] = s->current_picture_ptr->motion_val[0][midx]; 1146 for(j = 0; j < 16; j += 8){ 1147 for(i = 0; i < 2; i++){ 1148 if(is_mv_diff_gt_3(motion_val + i, 1)) 1149 vmvmask |= 0x11 << (j + i*2); 1150 if((j || s->mb_y) && is_mv_diff_gt_3(motion_val + i, s->b8_stride)) 1151 hmvmask |= 0x03 << (j + i*2); 1152 } 1153 motion_val += s->b8_stride; 1154 } 1155 if(s->first_slice_line) 1156 hmvmask &= ~0x000F; 1157 if(!s->mb_x) 1158 vmvmask &= ~0x1111; 1159 if(r->rv30){ //RV30 marks both subblocks on the edge for filtering 1160 vmvmask |= (vmvmask & 0x4444) >> 1; 1161 hmvmask |= (hmvmask & 0x0F00) >> 4; 1162 if(s->mb_x) 1163 r->deblock_coefs[s->mb_x - 1 + s->mb_y*s->mb_stride] |= (vmvmask & 0x1111) << 3; 1164 if(!s->first_slice_line) 1165 r->deblock_coefs[s->mb_x + (s->mb_y - 1)*s->mb_stride] |= (hmvmask & 0xF) << 12; 1166 } 1167 return hmvmask | vmvmask; 1168} 1169 1170static int rv34_decode_macroblock(RV34DecContext *r, int8_t *intra_types) 1171{ 1172 MpegEncContext *s = &r->s; 1173 GetBitContext *gb = &s->gb; 1174 int cbp, cbp2; 1175 int i, blknum, blkoff; 1176 DCTELEM block16[64]; 1177 int luma_dc_quant; 1178 int dist; 1179 int mb_pos = s->mb_x + s->mb_y * s->mb_stride; 1180 1181 // Calculate which neighbours are available. Maybe it's worth optimizing too. 1182 memset(r->avail_cache, 0, sizeof(r->avail_cache)); 1183 fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4); 1184 dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width; 1185 if(s->mb_x && dist) 1186 r->avail_cache[5] = 1187 r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1]; 1188 if(dist >= s->mb_width) 1189 r->avail_cache[2] = 1190 r->avail_cache[3] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride]; 1191 if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1) 1192 r->avail_cache[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1]; 1193 if(s->mb_x && dist > s->mb_width) 1194 r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1]; 1195 1196 s->qscale = r->si.quant; 1197 cbp = cbp2 = rv34_decode_mb_header(r, intra_types); 1198 r->cbp_luma [mb_pos] = cbp; 1199 r->cbp_chroma[mb_pos] = cbp >> 16; 1200 if(s->pict_type == FF_I_TYPE) 1201 r->deblock_coefs[mb_pos] = 0xFFFF; 1202 else 1203 r->deblock_coefs[mb_pos] = rv34_set_deblock_coef(r) | r->cbp_luma[mb_pos]; 1204 s->current_picture_ptr->qscale_table[mb_pos] = s->qscale; 1205 1206 if(cbp == -1) 1207 return -1; 1208 1209 luma_dc_quant = r->block_type == RV34_MB_P_MIX16x16 ? r->luma_dc_quant_p[s->qscale] : r->luma_dc_quant_i[s->qscale]; 1210 if(r->is16){ 1211 memset(block16, 0, sizeof(block16)); 1212 rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0); 1213 rv34_dequant4x4_16x16(block16, rv34_qscale_tab[luma_dc_quant],rv34_qscale_tab[s->qscale]); 1214 rv34_inv_transform_noround(block16); 1215 } 1216 1217 for(i = 0; i < 16; i++, cbp >>= 1){ 1218 if(!r->is16 && !(cbp & 1)) continue; 1219 blknum = ((i & 2) >> 1) + ((i & 8) >> 2); 1220 blkoff = ((i & 1) << 2) + ((i & 4) << 3); 1221 if(cbp & 1) 1222 rv34_decode_block(s->block[blknum] + blkoff, gb, r->cur_vlcs, r->luma_vlc, 0); 1223 rv34_dequant4x4(s->block[blknum] + blkoff, rv34_qscale_tab[s->qscale],rv34_qscale_tab[s->qscale]); 1224 if(r->is16) //FIXME: optimize 1225 s->block[blknum][blkoff] = block16[(i & 3) | ((i & 0xC) << 1)]; 1226 rv34_inv_transform(s->block[blknum] + blkoff); 1227 } 1228 if(r->block_type == RV34_MB_P_MIX16x16) 1229 r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1); 1230 for(; i < 24; i++, cbp >>= 1){ 1231 if(!(cbp & 1)) continue; 1232 blknum = ((i & 4) >> 2) + 4; 1233 blkoff = ((i & 1) << 2) + ((i & 2) << 4); 1234 rv34_decode_block(s->block[blknum] + blkoff, gb, r->cur_vlcs, r->chroma_vlc, 1); 1235 rv34_dequant4x4(s->block[blknum] + blkoff, rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]],rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]]); 1236 rv34_inv_transform(s->block[blknum] + blkoff); 1237 } 1238 if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])) 1239 rv34_output_macroblock(r, intra_types, cbp2, r->is16); 1240 else 1241 rv34_apply_differences(r, cbp2); 1242 1243 return 0; 1244} 1245 1246static int check_slice_end(RV34DecContext *r, MpegEncContext *s) 1247{ 1248 int bits; 1249 if(s->mb_y >= s->mb_height) 1250 return 1; 1251 if(!s->mb_num_left) 1252 return 1; 1253 if(r->s.mb_skip_run > 1) 1254 return 0; 1255 bits = r->bits - get_bits_count(&s->gb); 1256 if(bits < 0 || (bits < 8 && !show_bits(&s->gb, bits))) 1257 return 1; 1258 return 0; 1259} 1260 1261static inline int slice_compare(SliceInfo *si1, SliceInfo *si2) 1262{ 1263 return si1->type != si2->type || 1264 si1->start >= si2->start || 1265 si1->width != si2->width || 1266 si1->height != si2->height|| 1267 si1->pts != si2->pts; 1268} 1269 1270static int rv34_decode_slice(RV34DecContext *r, int end, const uint8_t* buf, int buf_size) 1271{ 1272 MpegEncContext *s = &r->s; 1273 GetBitContext *gb = &s->gb; 1274 int mb_pos; 1275 int res; 1276 1277 init_get_bits(&r->s.gb, buf, buf_size*8); 1278 res = r->parse_slice_header(r, gb, &r->si); 1279 if(res < 0){ 1280 av_log(s->avctx, AV_LOG_ERROR, "Incorrect or unknown slice header\n"); 1281 return -1; 1282 } 1283 1284 if ((s->mb_x == 0 && s->mb_y == 0) || s->current_picture_ptr==NULL) { 1285 if(s->width != r->si.width || s->height != r->si.height){ 1286 av_log(s->avctx, AV_LOG_DEBUG, "Changing dimensions to %dx%d\n", r->si.width,r->si.height); 1287 MPV_common_end(s); 1288 s->width = r->si.width; 1289 s->height = r->si.height; 1290 avcodec_set_dimensions(s->avctx, s->width, s->height); 1291 if(MPV_common_init(s) < 0) 1292 return -1; 1293 r->intra_types_stride = s->mb_width*4 + 4; 1294 r->intra_types_hist = av_realloc(r->intra_types_hist, r->intra_types_stride * 4 * 2 * sizeof(*r->intra_types_hist)); 1295 r->intra_types = r->intra_types_hist + r->intra_types_stride * 4; 1296 r->mb_type = av_realloc(r->mb_type, r->s.mb_stride * r->s.mb_height * sizeof(*r->mb_type)); 1297 r->cbp_luma = av_realloc(r->cbp_luma, r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_luma)); 1298 r->cbp_chroma = av_realloc(r->cbp_chroma, r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_chroma)); 1299 r->deblock_coefs = av_realloc(r->deblock_coefs, r->s.mb_stride * r->s.mb_height * sizeof(*r->deblock_coefs)); 1300 } 1301 s->pict_type = r->si.type ? r->si.type : FF_I_TYPE; 1302 if(MPV_frame_start(s, s->avctx) < 0) 1303 return -1; 1304 ff_er_frame_start(s); 1305 r->cur_pts = r->si.pts; 1306 if(s->pict_type != FF_B_TYPE){ 1307 r->last_pts = r->next_pts; 1308 r->next_pts = r->cur_pts; 1309 } 1310 s->mb_x = s->mb_y = 0; 1311 } 1312 1313 r->si.end = end; 1314 s->qscale = r->si.quant; 1315 r->bits = buf_size*8; 1316 s->mb_num_left = r->si.end - r->si.start; 1317 r->s.mb_skip_run = 0; 1318 1319 mb_pos = s->mb_x + s->mb_y * s->mb_width; 1320 if(r->si.start != mb_pos){ 1321 av_log(s->avctx, AV_LOG_ERROR, "Slice indicates MB offset %d, got %d\n", r->si.start, mb_pos); 1322 s->mb_x = r->si.start % s->mb_width; 1323 s->mb_y = r->si.start / s->mb_width; 1324 } 1325 memset(r->intra_types_hist, -1, r->intra_types_stride * 4 * 2 * sizeof(*r->intra_types_hist)); 1326 s->first_slice_line = 1; 1327 s->resync_mb_x= s->mb_x; 1328 s->resync_mb_y= s->mb_y; 1329 1330 ff_init_block_index(s); 1331 while(!check_slice_end(r, s)) { 1332 ff_update_block_index(s); 1333 s->dsp.clear_blocks(s->block[0]); 1334 1335 if(rv34_decode_macroblock(r, r->intra_types + s->mb_x * 4 + 4) < 0){ 1336 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_ERROR|DC_ERROR|MV_ERROR); 1337 return -1; 1338 } 1339 if (++s->mb_x == s->mb_width) { 1340 s->mb_x = 0; 1341 s->mb_y++; 1342 ff_init_block_index(s); 1343 1344 memmove(r->intra_types_hist, r->intra_types, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist)); 1345 memset(r->intra_types, -1, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist)); 1346 1347 if(r->loop_filter && s->mb_y >= 2) 1348 r->loop_filter(r, s->mb_y - 2); 1349 } 1350 if(s->mb_x == s->resync_mb_x) 1351 s->first_slice_line=0; 1352 s->mb_num_left--; 1353 } 1354 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END); 1355 1356 return s->mb_y == s->mb_height; 1357} 1358 1359/** @} */ // recons group end 1360 1361/** 1362 * Initialize decoder. 1363 */ 1364av_cold int ff_rv34_decode_init(AVCodecContext *avctx) 1365{ 1366 RV34DecContext *r = avctx->priv_data; 1367 MpegEncContext *s = &r->s; 1368 1369 MPV_decode_defaults(s); 1370 s->avctx= avctx; 1371 s->out_format = FMT_H263; 1372 s->codec_id= avctx->codec_id; 1373 1374 s->width = avctx->width; 1375 s->height = avctx->height; 1376 1377 r->s.avctx = avctx; 1378 avctx->flags |= CODEC_FLAG_EMU_EDGE; 1379 r->s.flags |= CODEC_FLAG_EMU_EDGE; 1380 avctx->pix_fmt = PIX_FMT_YUV420P; 1381 avctx->has_b_frames = 1; 1382 s->low_delay = 0; 1383 1384 if (MPV_common_init(s) < 0) 1385 return -1; 1386 1387 ff_h264_pred_init(&r->h, CODEC_ID_RV40); 1388 1389 r->intra_types_stride = 4*s->mb_stride + 4; 1390 r->intra_types_hist = av_malloc(r->intra_types_stride * 4 * 2 * sizeof(*r->intra_types_hist)); 1391 r->intra_types = r->intra_types_hist + r->intra_types_stride * 4; 1392 1393 r->mb_type = av_mallocz(r->s.mb_stride * r->s.mb_height * sizeof(*r->mb_type)); 1394 1395 r->cbp_luma = av_malloc(r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_luma)); 1396 r->cbp_chroma = av_malloc(r->s.mb_stride * r->s.mb_height * sizeof(*r->cbp_chroma)); 1397 r->deblock_coefs = av_malloc(r->s.mb_stride * r->s.mb_height * sizeof(*r->deblock_coefs)); 1398 1399 if(!intra_vlcs[0].cbppattern[0].bits) 1400 rv34_init_tables(); 1401 1402 return 0; 1403} 1404 1405static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n) 1406{ 1407 if(avctx->slice_count) return avctx->slice_offset[n]; 1408 else return AV_RL32(buf + n*8 - 4) == 1 ? AV_RL32(buf + n*8) : AV_RB32(buf + n*8); 1409} 1410 1411int ff_rv34_decode_frame(AVCodecContext *avctx, 1412 void *data, int *data_size, 1413 AVPacket *avpkt) 1414{ 1415 const uint8_t *buf = avpkt->data; 1416 int buf_size = avpkt->size; 1417 RV34DecContext *r = avctx->priv_data; 1418 MpegEncContext *s = &r->s; 1419 AVFrame *pict = data; 1420 SliceInfo si; 1421 int i; 1422 int slice_count; 1423 const uint8_t *slices_hdr = NULL; 1424 int last = 0; 1425 1426 /* no supplementary picture */ 1427 if (buf_size == 0) { 1428 /* special case for last picture */ 1429 if (s->low_delay==0 && s->next_picture_ptr) { 1430 *pict= *(AVFrame*)s->next_picture_ptr; 1431 s->next_picture_ptr= NULL; 1432 1433 *data_size = sizeof(AVFrame); 1434 } 1435 return 0; 1436 } 1437 1438 if(!avctx->slice_count){ 1439 slice_count = (*buf++) + 1; 1440 slices_hdr = buf + 4; 1441 buf += 8 * slice_count; 1442 }else 1443 slice_count = avctx->slice_count; 1444 1445 //parse first slice header to check whether this frame can be decoded 1446 if(get_slice_offset(avctx, slices_hdr, 0) > buf_size){ 1447 av_log(avctx, AV_LOG_ERROR, "Slice offset is greater than frame size\n"); 1448 return -1; 1449 } 1450 init_get_bits(&s->gb, buf+get_slice_offset(avctx, slices_hdr, 0), buf_size-get_slice_offset(avctx, slices_hdr, 0)); 1451 if(r->parse_slice_header(r, &r->s.gb, &si) < 0 || si.start){ 1452 av_log(avctx, AV_LOG_ERROR, "First slice header is incorrect\n"); 1453 return -1; 1454 } 1455 if((!s->last_picture_ptr || !s->last_picture_ptr->data[0]) && si.type == FF_B_TYPE) 1456 return -1; 1457 /* skip b frames if we are in a hurry */ 1458 if(avctx->hurry_up && si.type==FF_B_TYPE) return buf_size; 1459 if( (avctx->skip_frame >= AVDISCARD_NONREF && si.type==FF_B_TYPE) 1460 || (avctx->skip_frame >= AVDISCARD_NONKEY && si.type!=FF_I_TYPE) 1461 || avctx->skip_frame >= AVDISCARD_ALL) 1462 return buf_size; 1463 /* skip everything if we are in a hurry>=5 */ 1464 if(avctx->hurry_up>=5) 1465 return buf_size; 1466 1467 for(i=0; i<slice_count; i++){ 1468 int offset= get_slice_offset(avctx, slices_hdr, i); 1469 int size; 1470 if(i+1 == slice_count) 1471 size= buf_size - offset; 1472 else 1473 size= get_slice_offset(avctx, slices_hdr, i+1) - offset; 1474 1475 if(offset > buf_size){ 1476 av_log(avctx, AV_LOG_ERROR, "Slice offset is greater than frame size\n"); 1477 break; 1478 } 1479 1480 r->si.end = s->mb_width * s->mb_height; 1481 if(i+1 < slice_count){ 1482 init_get_bits(&s->gb, buf+get_slice_offset(avctx, slices_hdr, i+1), (buf_size-get_slice_offset(avctx, slices_hdr, i+1))*8); 1483 if(r->parse_slice_header(r, &r->s.gb, &si) < 0){ 1484 if(i+2 < slice_count) 1485 size = get_slice_offset(avctx, slices_hdr, i+2) - offset; 1486 else 1487 size = buf_size - offset; 1488 }else 1489 r->si.end = si.start; 1490 } 1491 last = rv34_decode_slice(r, r->si.end, buf + offset, size); 1492 s->mb_num_left = r->s.mb_x + r->s.mb_y*r->s.mb_width - r->si.start; 1493 if(last) 1494 break; 1495 } 1496 1497 if(last){ 1498 if(r->loop_filter) 1499 r->loop_filter(r, s->mb_height - 1); 1500 ff_er_frame_end(s); 1501 MPV_frame_end(s); 1502 if (s->pict_type == FF_B_TYPE || s->low_delay) { 1503 *pict= *(AVFrame*)s->current_picture_ptr; 1504 } else if (s->last_picture_ptr != NULL) { 1505 *pict= *(AVFrame*)s->last_picture_ptr; 1506 } 1507 1508 if(s->last_picture_ptr || s->low_delay){ 1509 *data_size = sizeof(AVFrame); 1510 ff_print_debug_info(s, pict); 1511 } 1512 s->current_picture_ptr= NULL; //so we can detect if frame_end wasnt called (find some nicer solution...) 1513 } 1514 return buf_size; 1515} 1516 1517av_cold int ff_rv34_decode_end(AVCodecContext *avctx) 1518{ 1519 RV34DecContext *r = avctx->priv_data; 1520 1521 MPV_common_end(&r->s); 1522 1523 av_freep(&r->intra_types_hist); 1524 r->intra_types = NULL; 1525 av_freep(&r->mb_type); 1526 av_freep(&r->cbp_luma); 1527 av_freep(&r->cbp_chroma); 1528 av_freep(&r->deblock_coefs); 1529 1530 return 0; 1531} 1532