| 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 "libavutil/imgutils.h" |
| 28 | #include "libavutil/internal.h" |
| 29 | |
| 30 | #include "avcodec.h" |
| 31 | #include "error_resilience.h" |
| 32 | #include "mpegutils.h" |
| 33 | #include "mpegvideo.h" |
| 34 | #include "golomb.h" |
| 35 | #include "internal.h" |
| 36 | #include "mathops.h" |
| 37 | #include "mpeg_er.h" |
| 38 | #include "qpeldsp.h" |
| 39 | #include "rectangle.h" |
| 40 | #include "thread.h" |
| 41 | |
| 42 | #include "rv34vlc.h" |
| 43 | #include "rv34data.h" |
| 44 | #include "rv34.h" |
| 45 | |
| 46 | static inline void ZERO8x2(void* dst, int stride) |
| 47 | { |
| 48 | fill_rectangle(dst, 1, 2, stride, 0, 4); |
| 49 | fill_rectangle(((uint8_t*)(dst))+4, 1, 2, stride, 0, 4); |
| 50 | } |
| 51 | |
| 52 | /** translation of RV30/40 macroblock types to lavc ones */ |
| 53 | static const int rv34_mb_type_to_lavc[12] = { |
| 54 | MB_TYPE_INTRA, |
| 55 | MB_TYPE_INTRA16x16 | MB_TYPE_SEPARATE_DC, |
| 56 | MB_TYPE_16x16 | MB_TYPE_L0, |
| 57 | MB_TYPE_8x8 | MB_TYPE_L0, |
| 58 | MB_TYPE_16x16 | MB_TYPE_L0, |
| 59 | MB_TYPE_16x16 | MB_TYPE_L1, |
| 60 | MB_TYPE_SKIP, |
| 61 | MB_TYPE_DIRECT2 | MB_TYPE_16x16, |
| 62 | MB_TYPE_16x8 | MB_TYPE_L0, |
| 63 | MB_TYPE_8x16 | MB_TYPE_L0, |
| 64 | MB_TYPE_16x16 | MB_TYPE_L0L1, |
| 65 | MB_TYPE_16x16 | MB_TYPE_L0 | MB_TYPE_SEPARATE_DC |
| 66 | }; |
| 67 | |
| 68 | |
| 69 | static RV34VLC intra_vlcs[NUM_INTRA_TABLES], inter_vlcs[NUM_INTER_TABLES]; |
| 70 | |
| 71 | static int rv34_decode_mv(RV34DecContext *r, int block_type); |
| 72 | |
| 73 | /** |
| 74 | * @name RV30/40 VLC generating functions |
| 75 | * @{ |
| 76 | */ |
| 77 | |
| 78 | static const int table_offs[] = { |
| 79 | 0, 1818, 3622, 4144, 4698, 5234, 5804, 5868, 5900, 5932, |
| 80 | 5996, 6252, 6316, 6348, 6380, 7674, 8944, 10274, 11668, 12250, |
| 81 | 14060, 15846, 16372, 16962, 17512, 18148, 18180, 18212, 18244, 18308, |
| 82 | 18564, 18628, 18660, 18692, 20036, 21314, 22648, 23968, 24614, 26384, |
| 83 | 28190, 28736, 29366, 29938, 30608, 30640, 30672, 30704, 30768, 31024, |
| 84 | 31088, 31120, 31184, 32570, 33898, 35236, 36644, 37286, 39020, 40802, |
| 85 | 41368, 42052, 42692, 43348, 43380, 43412, 43444, 43476, 43604, 43668, |
| 86 | 43700, 43732, 45100, 46430, 47778, 49160, 49802, 51550, 53340, 53972, |
| 87 | 54648, 55348, 55994, 56122, 56154, 56186, 56218, 56346, 56410, 56442, |
| 88 | 56474, 57878, 59290, 60636, 62036, 62682, 64460, 64524, 64588, 64716, |
| 89 | 64844, 66076, 67466, 67978, 68542, 69064, 69648, 70296, 72010, 72074, |
| 90 | 72138, 72202, 72330, 73572, 74936, 75454, 76030, 76566, 77176, 77822, |
| 91 | 79582, 79646, 79678, 79742, 79870, 81180, 82536, 83064, 83672, 84242, |
| 92 | 84934, 85576, 87384, 87448, 87480, 87544, 87672, 88982, 90340, 90902, |
| 93 | 91598, 92182, 92846, 93488, 95246, 95278, 95310, 95374, 95502, 96878, |
| 94 | 98266, 98848, 99542, 100234, 100884, 101524, 103320, 103352, 103384, 103416, |
| 95 | 103480, 104874, 106222, 106910, 107584, 108258, 108902, 109544, 111366, 111398, |
| 96 | 111430, 111462, 111494, 112878, 114320, 114988, 115660, 116310, 116950, 117592 |
| 97 | }; |
| 98 | |
| 99 | static VLC_TYPE table_data[117592][2]; |
| 100 | |
| 101 | /** |
| 102 | * Generate VLC from codeword lengths. |
| 103 | * @param bits codeword lengths (zeroes are accepted) |
| 104 | * @param size length of input data |
| 105 | * @param vlc output VLC |
| 106 | * @param insyms symbols for input codes (NULL for default ones) |
| 107 | * @param num VLC table number (for static initialization) |
| 108 | */ |
| 109 | static void rv34_gen_vlc(const uint8_t *bits, int size, VLC *vlc, const uint8_t *insyms, |
| 110 | const int num) |
| 111 | { |
| 112 | int i; |
| 113 | int counts[17] = {0}, codes[17]; |
| 114 | uint16_t cw[MAX_VLC_SIZE], syms[MAX_VLC_SIZE]; |
| 115 | uint8_t bits2[MAX_VLC_SIZE]; |
| 116 | int maxbits = 0, realsize = 0; |
| 117 | |
| 118 | for(i = 0; i < size; i++){ |
| 119 | if(bits[i]){ |
| 120 | bits2[realsize] = bits[i]; |
| 121 | syms[realsize] = insyms ? insyms[i] : i; |
| 122 | realsize++; |
| 123 | maxbits = FFMAX(maxbits, bits[i]); |
| 124 | counts[bits[i]]++; |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | codes[0] = 0; |
| 129 | for(i = 0; i < 16; i++) |
| 130 | codes[i+1] = (codes[i] + counts[i]) << 1; |
| 131 | for(i = 0; i < realsize; i++) |
| 132 | cw[i] = codes[bits2[i]]++; |
| 133 | |
| 134 | vlc->table = &table_data[table_offs[num]]; |
| 135 | vlc->table_allocated = table_offs[num + 1] - table_offs[num]; |
| 136 | ff_init_vlc_sparse(vlc, FFMIN(maxbits, 9), realsize, |
| 137 | bits2, 1, 1, |
| 138 | cw, 2, 2, |
| 139 | syms, 2, 2, INIT_VLC_USE_NEW_STATIC); |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * Initialize all tables. |
| 144 | */ |
| 145 | static av_cold void rv34_init_tables(void) |
| 146 | { |
| 147 | int i, j, k; |
| 148 | |
| 149 | for(i = 0; i < NUM_INTRA_TABLES; i++){ |
| 150 | for(j = 0; j < 2; j++){ |
| 151 | rv34_gen_vlc(rv34_table_intra_cbppat [i][j], CBPPAT_VLC_SIZE, &intra_vlcs[i].cbppattern[j], NULL, 19*i + 0 + j); |
| 152 | rv34_gen_vlc(rv34_table_intra_secondpat[i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].second_pattern[j], NULL, 19*i + 2 + j); |
| 153 | rv34_gen_vlc(rv34_table_intra_thirdpat [i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].third_pattern[j], NULL, 19*i + 4 + j); |
| 154 | for(k = 0; k < 4; k++){ |
| 155 | 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); |
| 156 | } |
| 157 | } |
| 158 | for(j = 0; j < 4; j++){ |
| 159 | rv34_gen_vlc(rv34_table_intra_firstpat[i][j], FIRSTBLK_VLC_SIZE, &intra_vlcs[i].first_pattern[j], NULL, 19*i + 14 + j); |
| 160 | } |
| 161 | rv34_gen_vlc(rv34_intra_coeff[i], COEFF_VLC_SIZE, &intra_vlcs[i].coefficient, NULL, 19*i + 18); |
| 162 | } |
| 163 | |
| 164 | for(i = 0; i < NUM_INTER_TABLES; i++){ |
| 165 | rv34_gen_vlc(rv34_inter_cbppat[i], CBPPAT_VLC_SIZE, &inter_vlcs[i].cbppattern[0], NULL, i*12 + 95); |
| 166 | for(j = 0; j < 4; j++){ |
| 167 | rv34_gen_vlc(rv34_inter_cbp[i][j], CBP_VLC_SIZE, &inter_vlcs[i].cbp[0][j], rv34_cbp_code, i*12 + 96 + j); |
| 168 | } |
| 169 | for(j = 0; j < 2; j++){ |
| 170 | rv34_gen_vlc(rv34_table_inter_firstpat [i][j], FIRSTBLK_VLC_SIZE, &inter_vlcs[i].first_pattern[j], NULL, i*12 + 100 + j); |
| 171 | rv34_gen_vlc(rv34_table_inter_secondpat[i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].second_pattern[j], NULL, i*12 + 102 + j); |
| 172 | rv34_gen_vlc(rv34_table_inter_thirdpat [i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].third_pattern[j], NULL, i*12 + 104 + j); |
| 173 | } |
| 174 | rv34_gen_vlc(rv34_inter_coeff[i], COEFF_VLC_SIZE, &inter_vlcs[i].coefficient, NULL, i*12 + 106); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | /** @} */ // vlc group |
| 179 | |
| 180 | /** |
| 181 | * @name RV30/40 4x4 block decoding functions |
| 182 | * @{ |
| 183 | */ |
| 184 | |
| 185 | /** |
| 186 | * Decode coded block pattern. |
| 187 | */ |
| 188 | static int rv34_decode_cbp(GetBitContext *gb, RV34VLC *vlc, int table) |
| 189 | { |
| 190 | int pattern, code, cbp=0; |
| 191 | int ones; |
| 192 | static const int cbp_masks[3] = {0x100000, 0x010000, 0x110000}; |
| 193 | static const int shifts[4] = { 0, 2, 8, 10 }; |
| 194 | const int *curshift = shifts; |
| 195 | int i, t, mask; |
| 196 | |
| 197 | code = get_vlc2(gb, vlc->cbppattern[table].table, 9, 2); |
| 198 | pattern = code & 0xF; |
| 199 | code >>= 4; |
| 200 | |
| 201 | ones = rv34_count_ones[pattern]; |
| 202 | |
| 203 | for(mask = 8; mask; mask >>= 1, curshift++){ |
| 204 | if(pattern & mask) |
| 205 | cbp |= get_vlc2(gb, vlc->cbp[table][ones].table, vlc->cbp[table][ones].bits, 1) << curshift[0]; |
| 206 | } |
| 207 | |
| 208 | for(i = 0; i < 4; i++){ |
| 209 | t = (modulo_three_table[code] >> (6 - 2*i)) & 3; |
| 210 | if(t == 1) |
| 211 | cbp |= cbp_masks[get_bits1(gb)] << i; |
| 212 | if(t == 2) |
| 213 | cbp |= cbp_masks[2] << i; |
| 214 | } |
| 215 | return cbp; |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Get one coefficient value from the bitstream and store it. |
| 220 | */ |
| 221 | static inline void decode_coeff(int16_t *dst, int coef, int esc, GetBitContext *gb, VLC* vlc, int q) |
| 222 | { |
| 223 | if(coef){ |
| 224 | if(coef == esc){ |
| 225 | coef = get_vlc2(gb, vlc->table, 9, 2); |
| 226 | if(coef > 23){ |
| 227 | coef -= 23; |
| 228 | coef = 22 + ((1 << coef) | get_bits(gb, coef)); |
| 229 | } |
| 230 | coef += esc; |
| 231 | } |
| 232 | if(get_bits1(gb)) |
| 233 | coef = -coef; |
| 234 | *dst = (coef*q + 8) >> 4; |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | /** |
| 239 | * Decode 2x2 subblock of coefficients. |
| 240 | */ |
| 241 | static inline void decode_subblock(int16_t *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc, int q) |
| 242 | { |
| 243 | int flags = modulo_three_table[code]; |
| 244 | |
| 245 | decode_coeff( dst+0*4+0, (flags >> 6) , 3, gb, vlc, q); |
| 246 | if(is_block2){ |
| 247 | decode_coeff(dst+1*4+0, (flags >> 4) & 3, 2, gb, vlc, q); |
| 248 | decode_coeff(dst+0*4+1, (flags >> 2) & 3, 2, gb, vlc, q); |
| 249 | }else{ |
| 250 | decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q); |
| 251 | decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q); |
| 252 | } |
| 253 | decode_coeff( dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q); |
| 254 | } |
| 255 | |
| 256 | /** |
| 257 | * Decode a single coefficient. |
| 258 | */ |
| 259 | static inline void decode_subblock1(int16_t *dst, int code, GetBitContext *gb, VLC *vlc, int q) |
| 260 | { |
| 261 | int coeff = modulo_three_table[code] >> 6; |
| 262 | decode_coeff(dst, coeff, 3, gb, vlc, q); |
| 263 | } |
| 264 | |
| 265 | static inline void decode_subblock3(int16_t *dst, int code, GetBitContext *gb, VLC *vlc, |
| 266 | int q_dc, int q_ac1, int q_ac2) |
| 267 | { |
| 268 | int flags = modulo_three_table[code]; |
| 269 | |
| 270 | decode_coeff(dst+0*4+0, (flags >> 6) , 3, gb, vlc, q_dc); |
| 271 | decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q_ac1); |
| 272 | decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q_ac1); |
| 273 | decode_coeff(dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q_ac2); |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * Decode coefficients for 4x4 block. |
| 278 | * |
| 279 | * This is done by filling 2x2 subblocks with decoded coefficients |
| 280 | * in this order (the same for subblocks and subblock coefficients): |
| 281 | * o--o |
| 282 | * / |
| 283 | * / |
| 284 | * o--o |
| 285 | */ |
| 286 | |
| 287 | static int rv34_decode_block(int16_t *dst, GetBitContext *gb, RV34VLC *rvlc, int fc, int sc, int q_dc, int q_ac1, int q_ac2) |
| 288 | { |
| 289 | int code, pattern, has_ac = 1; |
| 290 | |
| 291 | code = get_vlc2(gb, rvlc->first_pattern[fc].table, 9, 2); |
| 292 | |
| 293 | pattern = code & 0x7; |
| 294 | |
| 295 | code >>= 3; |
| 296 | |
| 297 | if (modulo_three_table[code] & 0x3F) { |
| 298 | decode_subblock3(dst, code, gb, &rvlc->coefficient, q_dc, q_ac1, q_ac2); |
| 299 | } else { |
| 300 | decode_subblock1(dst, code, gb, &rvlc->coefficient, q_dc); |
| 301 | if (!pattern) |
| 302 | return 0; |
| 303 | has_ac = 0; |
| 304 | } |
| 305 | |
| 306 | if(pattern & 4){ |
| 307 | code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2); |
| 308 | decode_subblock(dst + 4*0+2, code, 0, gb, &rvlc->coefficient, q_ac2); |
| 309 | } |
| 310 | if(pattern & 2){ // Looks like coefficients 1 and 2 are swapped for this block |
| 311 | code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2); |
| 312 | decode_subblock(dst + 4*2+0, code, 1, gb, &rvlc->coefficient, q_ac2); |
| 313 | } |
| 314 | if(pattern & 1){ |
| 315 | code = get_vlc2(gb, rvlc->third_pattern[sc].table, 9, 2); |
| 316 | decode_subblock(dst + 4*2+2, code, 0, gb, &rvlc->coefficient, q_ac2); |
| 317 | } |
| 318 | return has_ac | pattern; |
| 319 | } |
| 320 | |
| 321 | /** |
| 322 | * @name RV30/40 bitstream parsing |
| 323 | * @{ |
| 324 | */ |
| 325 | |
| 326 | /** |
| 327 | * Decode starting slice position. |
| 328 | * @todo Maybe replace with ff_h263_decode_mba() ? |
| 329 | */ |
| 330 | int ff_rv34_get_start_offset(GetBitContext *gb, int mb_size) |
| 331 | { |
| 332 | int i; |
| 333 | for(i = 0; i < 5; i++) |
| 334 | if(rv34_mb_max_sizes[i] >= mb_size - 1) |
| 335 | break; |
| 336 | return rv34_mb_bits_sizes[i]; |
| 337 | } |
| 338 | |
| 339 | /** |
| 340 | * Select VLC set for decoding from current quantizer, modifier and frame type. |
| 341 | */ |
| 342 | static inline RV34VLC* choose_vlc_set(int quant, int mod, int type) |
| 343 | { |
| 344 | if(mod == 2 && quant < 19) quant += 10; |
| 345 | else if(mod && quant < 26) quant += 5; |
| 346 | return type ? &inter_vlcs[rv34_quant_to_vlc_set[1][av_clip(quant, 0, 30)]] |
| 347 | : &intra_vlcs[rv34_quant_to_vlc_set[0][av_clip(quant, 0, 30)]]; |
| 348 | } |
| 349 | |
| 350 | /** |
| 351 | * Decode intra macroblock header and return CBP in case of success, -1 otherwise. |
| 352 | */ |
| 353 | static int rv34_decode_intra_mb_header(RV34DecContext *r, int8_t *intra_types) |
| 354 | { |
| 355 | MpegEncContext *s = &r->s; |
| 356 | GetBitContext *gb = &s->gb; |
| 357 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 358 | int t; |
| 359 | |
| 360 | r->is16 = get_bits1(gb); |
| 361 | if(r->is16){ |
| 362 | s->current_picture_ptr->mb_type[mb_pos] = MB_TYPE_INTRA16x16; |
| 363 | r->block_type = RV34_MB_TYPE_INTRA16x16; |
| 364 | t = get_bits(gb, 2); |
| 365 | fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0])); |
| 366 | r->luma_vlc = 2; |
| 367 | }else{ |
| 368 | if(!r->rv30){ |
| 369 | if(!get_bits1(gb)) |
| 370 | av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n"); |
| 371 | } |
| 372 | s->current_picture_ptr->mb_type[mb_pos] = MB_TYPE_INTRA; |
| 373 | r->block_type = RV34_MB_TYPE_INTRA; |
| 374 | if(r->decode_intra_types(r, gb, intra_types) < 0) |
| 375 | return -1; |
| 376 | r->luma_vlc = 1; |
| 377 | } |
| 378 | |
| 379 | r->chroma_vlc = 0; |
| 380 | r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0); |
| 381 | |
| 382 | return rv34_decode_cbp(gb, r->cur_vlcs, r->is16); |
| 383 | } |
| 384 | |
| 385 | /** |
| 386 | * Decode inter macroblock header and return CBP in case of success, -1 otherwise. |
| 387 | */ |
| 388 | static int rv34_decode_inter_mb_header(RV34DecContext *r, int8_t *intra_types) |
| 389 | { |
| 390 | MpegEncContext *s = &r->s; |
| 391 | GetBitContext *gb = &s->gb; |
| 392 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 393 | int i, t; |
| 394 | |
| 395 | r->block_type = r->decode_mb_info(r); |
| 396 | if(r->block_type == -1) |
| 397 | return -1; |
| 398 | s->current_picture_ptr->mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type]; |
| 399 | r->mb_type[mb_pos] = r->block_type; |
| 400 | if(r->block_type == RV34_MB_SKIP){ |
| 401 | if(s->pict_type == AV_PICTURE_TYPE_P) |
| 402 | r->mb_type[mb_pos] = RV34_MB_P_16x16; |
| 403 | if(s->pict_type == AV_PICTURE_TYPE_B) |
| 404 | r->mb_type[mb_pos] = RV34_MB_B_DIRECT; |
| 405 | } |
| 406 | r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->mb_type[mb_pos]); |
| 407 | rv34_decode_mv(r, r->block_type); |
| 408 | if(r->block_type == RV34_MB_SKIP){ |
| 409 | fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0])); |
| 410 | return 0; |
| 411 | } |
| 412 | r->chroma_vlc = 1; |
| 413 | r->luma_vlc = 0; |
| 414 | |
| 415 | if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){ |
| 416 | if(r->is16){ |
| 417 | t = get_bits(gb, 2); |
| 418 | fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0])); |
| 419 | r->luma_vlc = 2; |
| 420 | }else{ |
| 421 | if(r->decode_intra_types(r, gb, intra_types) < 0) |
| 422 | return -1; |
| 423 | r->luma_vlc = 1; |
| 424 | } |
| 425 | r->chroma_vlc = 0; |
| 426 | r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0); |
| 427 | }else{ |
| 428 | for(i = 0; i < 16; i++) |
| 429 | intra_types[(i & 3) + (i>>2) * r->intra_types_stride] = 0; |
| 430 | r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1); |
| 431 | if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){ |
| 432 | r->is16 = 1; |
| 433 | r->chroma_vlc = 1; |
| 434 | r->luma_vlc = 2; |
| 435 | r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0); |
| 436 | } |
| 437 | } |
| 438 | |
| 439 | return rv34_decode_cbp(gb, r->cur_vlcs, r->is16); |
| 440 | } |
| 441 | |
| 442 | /** @} */ //bitstream functions |
| 443 | |
| 444 | /** |
| 445 | * @name motion vector related code (prediction, reconstruction, motion compensation) |
| 446 | * @{ |
| 447 | */ |
| 448 | |
| 449 | /** macroblock partition width in 8x8 blocks */ |
| 450 | static const uint8_t part_sizes_w[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2 }; |
| 451 | |
| 452 | /** macroblock partition height in 8x8 blocks */ |
| 453 | static const uint8_t part_sizes_h[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2 }; |
| 454 | |
| 455 | /** availability index for subblocks */ |
| 456 | static const uint8_t avail_indexes[4] = { 6, 7, 10, 11 }; |
| 457 | |
| 458 | /** |
| 459 | * motion vector prediction |
| 460 | * |
| 461 | * Motion prediction performed for the block by using median prediction of |
| 462 | * motion vectors from the left, top and right top blocks but in corner cases |
| 463 | * some other vectors may be used instead. |
| 464 | */ |
| 465 | static void rv34_pred_mv(RV34DecContext *r, int block_type, int subblock_no, int dmv_no) |
| 466 | { |
| 467 | MpegEncContext *s = &r->s; |
| 468 | int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; |
| 469 | int A[2] = {0}, B[2], C[2]; |
| 470 | int i, j; |
| 471 | int mx, my; |
| 472 | int* avail = r->avail_cache + avail_indexes[subblock_no]; |
| 473 | int c_off = part_sizes_w[block_type]; |
| 474 | |
| 475 | mv_pos += (subblock_no & 1) + (subblock_no >> 1)*s->b8_stride; |
| 476 | if(subblock_no == 3) |
| 477 | c_off = -1; |
| 478 | |
| 479 | if(avail[-1]){ |
| 480 | A[0] = s->current_picture_ptr->motion_val[0][mv_pos-1][0]; |
| 481 | A[1] = s->current_picture_ptr->motion_val[0][mv_pos-1][1]; |
| 482 | } |
| 483 | if(avail[-4]){ |
| 484 | B[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][0]; |
| 485 | B[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][1]; |
| 486 | }else{ |
| 487 | B[0] = A[0]; |
| 488 | B[1] = A[1]; |
| 489 | } |
| 490 | if(!avail[c_off-4]){ |
| 491 | if(avail[-4] && (avail[-1] || r->rv30)){ |
| 492 | C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][0]; |
| 493 | C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][1]; |
| 494 | }else{ |
| 495 | C[0] = A[0]; |
| 496 | C[1] = A[1]; |
| 497 | } |
| 498 | }else{ |
| 499 | C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][0]; |
| 500 | C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][1]; |
| 501 | } |
| 502 | mx = mid_pred(A[0], B[0], C[0]); |
| 503 | my = mid_pred(A[1], B[1], C[1]); |
| 504 | mx += r->dmv[dmv_no][0]; |
| 505 | my += r->dmv[dmv_no][1]; |
| 506 | for(j = 0; j < part_sizes_h[block_type]; j++){ |
| 507 | for(i = 0; i < part_sizes_w[block_type]; i++){ |
| 508 | s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][0] = mx; |
| 509 | s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][1] = my; |
| 510 | } |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | #define GET_PTS_DIFF(a, b) (((a) - (b) + 8192) & 0x1FFF) |
| 515 | |
| 516 | /** |
| 517 | * Calculate motion vector component that should be added for direct blocks. |
| 518 | */ |
| 519 | static int calc_add_mv(RV34DecContext *r, int dir, int val) |
| 520 | { |
| 521 | int mul = dir ? -r->mv_weight2 : r->mv_weight1; |
| 522 | |
| 523 | return (val * mul + 0x2000) >> 14; |
| 524 | } |
| 525 | |
| 526 | /** |
| 527 | * Predict motion vector for B-frame macroblock. |
| 528 | */ |
| 529 | static inline void rv34_pred_b_vector(int A[2], int B[2], int C[2], |
| 530 | int A_avail, int B_avail, int C_avail, |
| 531 | int *mx, int *my) |
| 532 | { |
| 533 | if(A_avail + B_avail + C_avail != 3){ |
| 534 | *mx = A[0] + B[0] + C[0]; |
| 535 | *my = A[1] + B[1] + C[1]; |
| 536 | if(A_avail + B_avail + C_avail == 2){ |
| 537 | *mx /= 2; |
| 538 | *my /= 2; |
| 539 | } |
| 540 | }else{ |
| 541 | *mx = mid_pred(A[0], B[0], C[0]); |
| 542 | *my = mid_pred(A[1], B[1], C[1]); |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | /** |
| 547 | * motion vector prediction for B-frames |
| 548 | */ |
| 549 | static void rv34_pred_mv_b(RV34DecContext *r, int block_type, int dir) |
| 550 | { |
| 551 | MpegEncContext *s = &r->s; |
| 552 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 553 | int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; |
| 554 | int A[2] = { 0 }, B[2] = { 0 }, C[2] = { 0 }; |
| 555 | int has_A = 0, has_B = 0, has_C = 0; |
| 556 | int mx, my; |
| 557 | int i, j; |
| 558 | Picture *cur_pic = s->current_picture_ptr; |
| 559 | const int mask = dir ? MB_TYPE_L1 : MB_TYPE_L0; |
| 560 | int type = cur_pic->mb_type[mb_pos]; |
| 561 | |
| 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 | */ |
| 601 | static 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 = r->avail_cache + avail_indexes[0]; |
| 609 | |
| 610 | if(avail[-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(avail[-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(!avail[-4 + 2]){ |
| 622 | if(avail[-4] && (avail[-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 | |
| 647 | static 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 | */ |
| 664 | static 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, int weighted, |
| 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 | int emu = 0; |
| 677 | |
| 678 | if(thirdpel){ |
| 679 | int chroma_mx, chroma_my; |
| 680 | mx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) / 3 - (1 << 24); |
| 681 | my = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) / 3 - (1 << 24); |
| 682 | lx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) % 3; |
| 683 | ly = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) % 3; |
| 684 | chroma_mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2; |
| 685 | chroma_my = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2; |
| 686 | umx = (chroma_mx + (3 << 24)) / 3 - (1 << 24); |
| 687 | umy = (chroma_my + (3 << 24)) / 3 - (1 << 24); |
| 688 | uvmx = chroma_coeffs[(chroma_mx + (3 << 24)) % 3]; |
| 689 | uvmy = chroma_coeffs[(chroma_my + (3 << 24)) % 3]; |
| 690 | }else{ |
| 691 | int cx, cy; |
| 692 | mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] >> 2; |
| 693 | my = s->current_picture_ptr->motion_val[dir][mv_pos][1] >> 2; |
| 694 | lx = s->current_picture_ptr->motion_val[dir][mv_pos][0] & 3; |
| 695 | ly = s->current_picture_ptr->motion_val[dir][mv_pos][1] & 3; |
| 696 | cx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2; |
| 697 | cy = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2; |
| 698 | umx = cx >> 2; |
| 699 | umy = cy >> 2; |
| 700 | uvmx = (cx & 3) << 1; |
| 701 | uvmy = (cy & 3) << 1; |
| 702 | //due to some flaw RV40 uses the same MC compensation routine for H2V2 and H3V3 |
| 703 | if(uvmx == 6 && uvmy == 6) |
| 704 | uvmx = uvmy = 4; |
| 705 | } |
| 706 | |
| 707 | if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) { |
| 708 | /* wait for the referenced mb row to be finished */ |
| 709 | int mb_row = s->mb_y + ((yoff + my + 5 + 8 * height) >> 4); |
| 710 | ThreadFrame *f = dir ? &s->next_picture_ptr->tf : &s->last_picture_ptr->tf; |
| 711 | ff_thread_await_progress(f, mb_row, 0); |
| 712 | } |
| 713 | |
| 714 | dxy = ly*4 + lx; |
| 715 | srcY = dir ? s->next_picture_ptr->f->data[0] : s->last_picture_ptr->f->data[0]; |
| 716 | srcU = dir ? s->next_picture_ptr->f->data[1] : s->last_picture_ptr->f->data[1]; |
| 717 | srcV = dir ? s->next_picture_ptr->f->data[2] : s->last_picture_ptr->f->data[2]; |
| 718 | src_x = s->mb_x * 16 + xoff + mx; |
| 719 | src_y = s->mb_y * 16 + yoff + my; |
| 720 | uvsrc_x = s->mb_x * 8 + (xoff >> 1) + umx; |
| 721 | uvsrc_y = s->mb_y * 8 + (yoff >> 1) + umy; |
| 722 | srcY += src_y * s->linesize + src_x; |
| 723 | srcU += uvsrc_y * s->uvlinesize + uvsrc_x; |
| 724 | srcV += uvsrc_y * s->uvlinesize + uvsrc_x; |
| 725 | if(s->h_edge_pos - (width << 3) < 6 || s->v_edge_pos - (height << 3) < 6 || |
| 726 | (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 4 || |
| 727 | (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 4) { |
| 728 | srcY -= 2 + 2*s->linesize; |
| 729 | s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY, |
| 730 | s->linesize, s->linesize, |
| 731 | (width << 3) + 6, (height << 3) + 6, |
| 732 | src_x - 2, src_y - 2, |
| 733 | s->h_edge_pos, s->v_edge_pos); |
| 734 | srcY = s->edge_emu_buffer + 2 + 2*s->linesize; |
| 735 | emu = 1; |
| 736 | } |
| 737 | if(!weighted){ |
| 738 | Y = s->dest[0] + xoff + yoff *s->linesize; |
| 739 | U = s->dest[1] + (xoff>>1) + (yoff>>1)*s->uvlinesize; |
| 740 | V = s->dest[2] + (xoff>>1) + (yoff>>1)*s->uvlinesize; |
| 741 | }else{ |
| 742 | Y = r->tmp_b_block_y [dir] + xoff + yoff *s->linesize; |
| 743 | U = r->tmp_b_block_uv[dir*2] + (xoff>>1) + (yoff>>1)*s->uvlinesize; |
| 744 | V = r->tmp_b_block_uv[dir*2+1] + (xoff>>1) + (yoff>>1)*s->uvlinesize; |
| 745 | } |
| 746 | |
| 747 | if(block_type == RV34_MB_P_16x8){ |
| 748 | qpel_mc[1][dxy](Y, srcY, s->linesize); |
| 749 | Y += 8; |
| 750 | srcY += 8; |
| 751 | }else if(block_type == RV34_MB_P_8x16){ |
| 752 | qpel_mc[1][dxy](Y, srcY, s->linesize); |
| 753 | Y += 8 * s->linesize; |
| 754 | srcY += 8 * s->linesize; |
| 755 | } |
| 756 | is16x16 = (block_type != RV34_MB_P_8x8) && (block_type != RV34_MB_P_16x8) && (block_type != RV34_MB_P_8x16); |
| 757 | qpel_mc[!is16x16][dxy](Y, srcY, s->linesize); |
| 758 | if (emu) { |
| 759 | uint8_t *uvbuf = s->edge_emu_buffer; |
| 760 | |
| 761 | s->vdsp.emulated_edge_mc(uvbuf, srcU, |
| 762 | s->uvlinesize, s->uvlinesize, |
| 763 | (width << 2) + 1, (height << 2) + 1, |
| 764 | uvsrc_x, uvsrc_y, |
| 765 | s->h_edge_pos >> 1, s->v_edge_pos >> 1); |
| 766 | srcU = uvbuf; |
| 767 | uvbuf += 9*s->uvlinesize; |
| 768 | |
| 769 | s->vdsp.emulated_edge_mc(uvbuf, srcV, |
| 770 | s->uvlinesize, s->uvlinesize, |
| 771 | (width << 2) + 1, (height << 2) + 1, |
| 772 | uvsrc_x, uvsrc_y, |
| 773 | s->h_edge_pos >> 1, s->v_edge_pos >> 1); |
| 774 | srcV = uvbuf; |
| 775 | } |
| 776 | chroma_mc[2-width] (U, srcU, s->uvlinesize, height*4, uvmx, uvmy); |
| 777 | chroma_mc[2-width] (V, srcV, s->uvlinesize, height*4, uvmx, uvmy); |
| 778 | } |
| 779 | |
| 780 | static void rv34_mc_1mv(RV34DecContext *r, const int block_type, |
| 781 | const int xoff, const int yoff, int mv_off, |
| 782 | const int width, const int height, int dir) |
| 783 | { |
| 784 | rv34_mc(r, block_type, xoff, yoff, mv_off, width, height, dir, r->rv30, 0, |
| 785 | r->rdsp.put_pixels_tab, |
| 786 | r->rdsp.put_chroma_pixels_tab); |
| 787 | } |
| 788 | |
| 789 | static void rv4_weight(RV34DecContext *r) |
| 790 | { |
| 791 | r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][0](r->s.dest[0], |
| 792 | r->tmp_b_block_y[0], |
| 793 | r->tmp_b_block_y[1], |
| 794 | r->weight1, |
| 795 | r->weight2, |
| 796 | r->s.linesize); |
| 797 | r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[1], |
| 798 | r->tmp_b_block_uv[0], |
| 799 | r->tmp_b_block_uv[2], |
| 800 | r->weight1, |
| 801 | r->weight2, |
| 802 | r->s.uvlinesize); |
| 803 | r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[2], |
| 804 | r->tmp_b_block_uv[1], |
| 805 | r->tmp_b_block_uv[3], |
| 806 | r->weight1, |
| 807 | r->weight2, |
| 808 | r->s.uvlinesize); |
| 809 | } |
| 810 | |
| 811 | static void rv34_mc_2mv(RV34DecContext *r, const int block_type) |
| 812 | { |
| 813 | int weighted = !r->rv30 && block_type != RV34_MB_B_BIDIR && r->weight1 != 8192; |
| 814 | |
| 815 | rv34_mc(r, block_type, 0, 0, 0, 2, 2, 0, r->rv30, weighted, |
| 816 | r->rdsp.put_pixels_tab, |
| 817 | r->rdsp.put_chroma_pixels_tab); |
| 818 | if(!weighted){ |
| 819 | rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 0, |
| 820 | r->rdsp.avg_pixels_tab, |
| 821 | r->rdsp.avg_chroma_pixels_tab); |
| 822 | }else{ |
| 823 | rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 1, |
| 824 | r->rdsp.put_pixels_tab, |
| 825 | r->rdsp.put_chroma_pixels_tab); |
| 826 | rv4_weight(r); |
| 827 | } |
| 828 | } |
| 829 | |
| 830 | static void rv34_mc_2mv_skip(RV34DecContext *r) |
| 831 | { |
| 832 | int i, j; |
| 833 | int weighted = !r->rv30 && r->weight1 != 8192; |
| 834 | |
| 835 | for(j = 0; j < 2; j++) |
| 836 | for(i = 0; i < 2; i++){ |
| 837 | rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 0, r->rv30, |
| 838 | weighted, |
| 839 | r->rdsp.put_pixels_tab, |
| 840 | r->rdsp.put_chroma_pixels_tab); |
| 841 | rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 1, r->rv30, |
| 842 | weighted, |
| 843 | weighted ? r->rdsp.put_pixels_tab : r->rdsp.avg_pixels_tab, |
| 844 | weighted ? r->rdsp.put_chroma_pixels_tab : r->rdsp.avg_chroma_pixels_tab); |
| 845 | } |
| 846 | if(weighted) |
| 847 | rv4_weight(r); |
| 848 | } |
| 849 | |
| 850 | /** number of motion vectors in each macroblock type */ |
| 851 | static const int num_mvs[RV34_MB_TYPES] = { 0, 0, 1, 4, 1, 1, 0, 0, 2, 2, 2, 1 }; |
| 852 | |
| 853 | /** |
| 854 | * Decode motion vector differences |
| 855 | * and perform motion vector reconstruction and motion compensation. |
| 856 | */ |
| 857 | static int rv34_decode_mv(RV34DecContext *r, int block_type) |
| 858 | { |
| 859 | MpegEncContext *s = &r->s; |
| 860 | GetBitContext *gb = &s->gb; |
| 861 | int i, j, k, l; |
| 862 | int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; |
| 863 | int next_bt; |
| 864 | |
| 865 | memset(r->dmv, 0, sizeof(r->dmv)); |
| 866 | for(i = 0; i < num_mvs[block_type]; i++){ |
| 867 | r->dmv[i][0] = svq3_get_se_golomb(gb); |
| 868 | r->dmv[i][1] = svq3_get_se_golomb(gb); |
| 869 | } |
| 870 | switch(block_type){ |
| 871 | case RV34_MB_TYPE_INTRA: |
| 872 | case RV34_MB_TYPE_INTRA16x16: |
| 873 | ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); |
| 874 | return 0; |
| 875 | case RV34_MB_SKIP: |
| 876 | if(s->pict_type == AV_PICTURE_TYPE_P){ |
| 877 | ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); |
| 878 | rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0); |
| 879 | break; |
| 880 | } |
| 881 | case RV34_MB_B_DIRECT: |
| 882 | //surprisingly, it uses motion scheme from next reference frame |
| 883 | /* wait for the current mb row to be finished */ |
| 884 | if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) |
| 885 | ff_thread_await_progress(&s->next_picture_ptr->tf, FFMAX(0, s->mb_y-1), 0); |
| 886 | |
| 887 | next_bt = s->next_picture_ptr->mb_type[s->mb_x + s->mb_y * s->mb_stride]; |
| 888 | if(IS_INTRA(next_bt) || IS_SKIP(next_bt)){ |
| 889 | ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); |
| 890 | ZERO8x2(s->current_picture_ptr->motion_val[1][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); |
| 891 | }else |
| 892 | for(j = 0; j < 2; j++) |
| 893 | for(i = 0; i < 2; i++) |
| 894 | for(k = 0; k < 2; k++) |
| 895 | for(l = 0; l < 2; l++) |
| 896 | 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]); |
| 897 | if(!(IS_16X8(next_bt) || IS_8X16(next_bt) || IS_8X8(next_bt))) //we can use whole macroblock MC |
| 898 | rv34_mc_2mv(r, block_type); |
| 899 | else |
| 900 | rv34_mc_2mv_skip(r); |
| 901 | ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride); |
| 902 | break; |
| 903 | case RV34_MB_P_16x16: |
| 904 | case RV34_MB_P_MIX16x16: |
| 905 | rv34_pred_mv(r, block_type, 0, 0); |
| 906 | rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0); |
| 907 | break; |
| 908 | case RV34_MB_B_FORWARD: |
| 909 | case RV34_MB_B_BACKWARD: |
| 910 | r->dmv[1][0] = r->dmv[0][0]; |
| 911 | r->dmv[1][1] = r->dmv[0][1]; |
| 912 | if(r->rv30) |
| 913 | rv34_pred_mv_rv3(r, block_type, block_type == RV34_MB_B_BACKWARD); |
| 914 | else |
| 915 | rv34_pred_mv_b (r, block_type, block_type == RV34_MB_B_BACKWARD); |
| 916 | rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, block_type == RV34_MB_B_BACKWARD); |
| 917 | break; |
| 918 | case RV34_MB_P_16x8: |
| 919 | case RV34_MB_P_8x16: |
| 920 | rv34_pred_mv(r, block_type, 0, 0); |
| 921 | rv34_pred_mv(r, block_type, 1 + (block_type == RV34_MB_P_16x8), 1); |
| 922 | if(block_type == RV34_MB_P_16x8){ |
| 923 | rv34_mc_1mv(r, block_type, 0, 0, 0, 2, 1, 0); |
| 924 | rv34_mc_1mv(r, block_type, 0, 8, s->b8_stride, 2, 1, 0); |
| 925 | } |
| 926 | if(block_type == RV34_MB_P_8x16){ |
| 927 | rv34_mc_1mv(r, block_type, 0, 0, 0, 1, 2, 0); |
| 928 | rv34_mc_1mv(r, block_type, 8, 0, 1, 1, 2, 0); |
| 929 | } |
| 930 | break; |
| 931 | case RV34_MB_B_BIDIR: |
| 932 | rv34_pred_mv_b (r, block_type, 0); |
| 933 | rv34_pred_mv_b (r, block_type, 1); |
| 934 | rv34_mc_2mv (r, block_type); |
| 935 | break; |
| 936 | case RV34_MB_P_8x8: |
| 937 | for(i=0;i< 4;i++){ |
| 938 | rv34_pred_mv(r, block_type, i, i); |
| 939 | rv34_mc_1mv (r, block_type, (i&1)<<3, (i&2)<<2, (i&1)+(i>>1)*s->b8_stride, 1, 1, 0); |
| 940 | } |
| 941 | break; |
| 942 | } |
| 943 | |
| 944 | return 0; |
| 945 | } |
| 946 | /** @} */ // mv group |
| 947 | |
| 948 | /** |
| 949 | * @name Macroblock reconstruction functions |
| 950 | * @{ |
| 951 | */ |
| 952 | /** mapping of RV30/40 intra prediction types to standard H.264 types */ |
| 953 | static const int ittrans[9] = { |
| 954 | DC_PRED, VERT_PRED, HOR_PRED, DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_LEFT_PRED, |
| 955 | VERT_RIGHT_PRED, VERT_LEFT_PRED, HOR_UP_PRED, HOR_DOWN_PRED, |
| 956 | }; |
| 957 | |
| 958 | /** mapping of RV30/40 intra 16x16 prediction types to standard H.264 types */ |
| 959 | static const int ittrans16[4] = { |
| 960 | DC_PRED8x8, VERT_PRED8x8, HOR_PRED8x8, PLANE_PRED8x8, |
| 961 | }; |
| 962 | |
| 963 | /** |
| 964 | * Perform 4x4 intra prediction. |
| 965 | */ |
| 966 | static void rv34_pred_4x4_block(RV34DecContext *r, uint8_t *dst, int stride, int itype, int up, int left, int down, int right) |
| 967 | { |
| 968 | uint8_t *prev = dst - stride + 4; |
| 969 | uint32_t topleft; |
| 970 | |
| 971 | if(!up && !left) |
| 972 | itype = DC_128_PRED; |
| 973 | else if(!up){ |
| 974 | if(itype == VERT_PRED) itype = HOR_PRED; |
| 975 | if(itype == DC_PRED) itype = LEFT_DC_PRED; |
| 976 | }else if(!left){ |
| 977 | if(itype == HOR_PRED) itype = VERT_PRED; |
| 978 | if(itype == DC_PRED) itype = TOP_DC_PRED; |
| 979 | if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN; |
| 980 | } |
| 981 | if(!down){ |
| 982 | if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN; |
| 983 | if(itype == HOR_UP_PRED) itype = HOR_UP_PRED_RV40_NODOWN; |
| 984 | if(itype == VERT_LEFT_PRED) itype = VERT_LEFT_PRED_RV40_NODOWN; |
| 985 | } |
| 986 | if(!right && up){ |
| 987 | topleft = dst[-stride + 3] * 0x01010101u; |
| 988 | prev = (uint8_t*)&topleft; |
| 989 | } |
| 990 | r->h.pred4x4[itype](dst, prev, stride); |
| 991 | } |
| 992 | |
| 993 | static inline int adjust_pred16(int itype, int up, int left) |
| 994 | { |
| 995 | if(!up && !left) |
| 996 | itype = DC_128_PRED8x8; |
| 997 | else if(!up){ |
| 998 | if(itype == PLANE_PRED8x8)itype = HOR_PRED8x8; |
| 999 | if(itype == VERT_PRED8x8) itype = HOR_PRED8x8; |
| 1000 | if(itype == DC_PRED8x8) itype = LEFT_DC_PRED8x8; |
| 1001 | }else if(!left){ |
| 1002 | if(itype == PLANE_PRED8x8)itype = VERT_PRED8x8; |
| 1003 | if(itype == HOR_PRED8x8) itype = VERT_PRED8x8; |
| 1004 | if(itype == DC_PRED8x8) itype = TOP_DC_PRED8x8; |
| 1005 | } |
| 1006 | return itype; |
| 1007 | } |
| 1008 | |
| 1009 | static inline void rv34_process_block(RV34DecContext *r, |
| 1010 | uint8_t *pdst, int stride, |
| 1011 | int fc, int sc, int q_dc, int q_ac) |
| 1012 | { |
| 1013 | MpegEncContext *s = &r->s; |
| 1014 | int16_t *ptr = s->block[0]; |
| 1015 | int has_ac = rv34_decode_block(ptr, &s->gb, r->cur_vlcs, |
| 1016 | fc, sc, q_dc, q_ac, q_ac); |
| 1017 | if(has_ac){ |
| 1018 | r->rdsp.rv34_idct_add(pdst, stride, ptr); |
| 1019 | }else{ |
| 1020 | r->rdsp.rv34_idct_dc_add(pdst, stride, ptr[0]); |
| 1021 | ptr[0] = 0; |
| 1022 | } |
| 1023 | } |
| 1024 | |
| 1025 | static void rv34_output_i16x16(RV34DecContext *r, int8_t *intra_types, int cbp) |
| 1026 | { |
| 1027 | LOCAL_ALIGNED_16(int16_t, block16, [16]); |
| 1028 | MpegEncContext *s = &r->s; |
| 1029 | GetBitContext *gb = &s->gb; |
| 1030 | int q_dc = rv34_qscale_tab[ r->luma_dc_quant_i[s->qscale] ], |
| 1031 | q_ac = rv34_qscale_tab[s->qscale]; |
| 1032 | uint8_t *dst = s->dest[0]; |
| 1033 | int16_t *ptr = s->block[0]; |
| 1034 | int i, j, itype, has_ac; |
| 1035 | |
| 1036 | memset(block16, 0, 16 * sizeof(*block16)); |
| 1037 | |
| 1038 | has_ac = rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac); |
| 1039 | if(has_ac) |
| 1040 | r->rdsp.rv34_inv_transform(block16); |
| 1041 | else |
| 1042 | r->rdsp.rv34_inv_transform_dc(block16); |
| 1043 | |
| 1044 | itype = ittrans16[intra_types[0]]; |
| 1045 | itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]); |
| 1046 | r->h.pred16x16[itype](dst, s->linesize); |
| 1047 | |
| 1048 | for(j = 0; j < 4; j++){ |
| 1049 | for(i = 0; i < 4; i++, cbp >>= 1){ |
| 1050 | int dc = block16[i + j*4]; |
| 1051 | |
| 1052 | if(cbp & 1){ |
| 1053 | has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac); |
| 1054 | }else |
| 1055 | has_ac = 0; |
| 1056 | |
| 1057 | if(has_ac){ |
| 1058 | ptr[0] = dc; |
| 1059 | r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr); |
| 1060 | }else |
| 1061 | r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc); |
| 1062 | } |
| 1063 | |
| 1064 | dst += 4*s->linesize; |
| 1065 | } |
| 1066 | |
| 1067 | itype = ittrans16[intra_types[0]]; |
| 1068 | if(itype == PLANE_PRED8x8) itype = DC_PRED8x8; |
| 1069 | itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]); |
| 1070 | |
| 1071 | q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]]; |
| 1072 | q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]]; |
| 1073 | |
| 1074 | for(j = 1; j < 3; j++){ |
| 1075 | dst = s->dest[j]; |
| 1076 | r->h.pred8x8[itype](dst, s->uvlinesize); |
| 1077 | for(i = 0; i < 4; i++, cbp >>= 1){ |
| 1078 | uint8_t *pdst; |
| 1079 | if(!(cbp & 1)) continue; |
| 1080 | pdst = dst + (i&1)*4 + (i&2)*2*s->uvlinesize; |
| 1081 | |
| 1082 | rv34_process_block(r, pdst, s->uvlinesize, |
| 1083 | r->chroma_vlc, 1, q_dc, q_ac); |
| 1084 | } |
| 1085 | } |
| 1086 | } |
| 1087 | |
| 1088 | static void rv34_output_intra(RV34DecContext *r, int8_t *intra_types, int cbp) |
| 1089 | { |
| 1090 | MpegEncContext *s = &r->s; |
| 1091 | uint8_t *dst = s->dest[0]; |
| 1092 | int avail[6*8] = {0}; |
| 1093 | int i, j, k; |
| 1094 | int idx, q_ac, q_dc; |
| 1095 | |
| 1096 | // Set neighbour information. |
| 1097 | if(r->avail_cache[1]) |
| 1098 | avail[0] = 1; |
| 1099 | if(r->avail_cache[2]) |
| 1100 | avail[1] = avail[2] = 1; |
| 1101 | if(r->avail_cache[3]) |
| 1102 | avail[3] = avail[4] = 1; |
| 1103 | if(r->avail_cache[4]) |
| 1104 | avail[5] = 1; |
| 1105 | if(r->avail_cache[5]) |
| 1106 | avail[8] = avail[16] = 1; |
| 1107 | if(r->avail_cache[9]) |
| 1108 | avail[24] = avail[32] = 1; |
| 1109 | |
| 1110 | q_ac = rv34_qscale_tab[s->qscale]; |
| 1111 | for(j = 0; j < 4; j++){ |
| 1112 | idx = 9 + j*8; |
| 1113 | for(i = 0; i < 4; i++, cbp >>= 1, dst += 4, idx++){ |
| 1114 | rv34_pred_4x4_block(r, dst, s->linesize, ittrans[intra_types[i]], avail[idx-8], avail[idx-1], avail[idx+7], avail[idx-7]); |
| 1115 | avail[idx] = 1; |
| 1116 | if(!(cbp & 1)) continue; |
| 1117 | |
| 1118 | rv34_process_block(r, dst, s->linesize, |
| 1119 | r->luma_vlc, 0, q_ac, q_ac); |
| 1120 | } |
| 1121 | dst += s->linesize * 4 - 4*4; |
| 1122 | intra_types += r->intra_types_stride; |
| 1123 | } |
| 1124 | |
| 1125 | intra_types -= r->intra_types_stride * 4; |
| 1126 | |
| 1127 | q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]]; |
| 1128 | q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]]; |
| 1129 | |
| 1130 | for(k = 0; k < 2; k++){ |
| 1131 | dst = s->dest[1+k]; |
| 1132 | fill_rectangle(r->avail_cache + 6, 2, 2, 4, 0, 4); |
| 1133 | |
| 1134 | for(j = 0; j < 2; j++){ |
| 1135 | int* acache = r->avail_cache + 6 + j*4; |
| 1136 | for(i = 0; i < 2; i++, cbp >>= 1, acache++){ |
| 1137 | int itype = ittrans[intra_types[i*2+j*2*r->intra_types_stride]]; |
| 1138 | rv34_pred_4x4_block(r, dst+4*i, s->uvlinesize, itype, acache[-4], acache[-1], !i && !j, acache[-3]); |
| 1139 | acache[0] = 1; |
| 1140 | |
| 1141 | if(!(cbp&1)) continue; |
| 1142 | |
| 1143 | rv34_process_block(r, dst + 4*i, s->uvlinesize, |
| 1144 | r->chroma_vlc, 1, q_dc, q_ac); |
| 1145 | } |
| 1146 | |
| 1147 | dst += 4*s->uvlinesize; |
| 1148 | } |
| 1149 | } |
| 1150 | } |
| 1151 | |
| 1152 | static int is_mv_diff_gt_3(int16_t (*motion_val)[2], int step) |
| 1153 | { |
| 1154 | int d; |
| 1155 | d = motion_val[0][0] - motion_val[-step][0]; |
| 1156 | if(d < -3 || d > 3) |
| 1157 | return 1; |
| 1158 | d = motion_val[0][1] - motion_val[-step][1]; |
| 1159 | if(d < -3 || d > 3) |
| 1160 | return 1; |
| 1161 | return 0; |
| 1162 | } |
| 1163 | |
| 1164 | static int rv34_set_deblock_coef(RV34DecContext *r) |
| 1165 | { |
| 1166 | MpegEncContext *s = &r->s; |
| 1167 | int hmvmask = 0, vmvmask = 0, i, j; |
| 1168 | int midx = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride; |
| 1169 | int16_t (*motion_val)[2] = &s->current_picture_ptr->motion_val[0][midx]; |
| 1170 | for(j = 0; j < 16; j += 8){ |
| 1171 | for(i = 0; i < 2; i++){ |
| 1172 | if(is_mv_diff_gt_3(motion_val + i, 1)) |
| 1173 | vmvmask |= 0x11 << (j + i*2); |
| 1174 | if((j || s->mb_y) && is_mv_diff_gt_3(motion_val + i, s->b8_stride)) |
| 1175 | hmvmask |= 0x03 << (j + i*2); |
| 1176 | } |
| 1177 | motion_val += s->b8_stride; |
| 1178 | } |
| 1179 | if(s->first_slice_line) |
| 1180 | hmvmask &= ~0x000F; |
| 1181 | if(!s->mb_x) |
| 1182 | vmvmask &= ~0x1111; |
| 1183 | if(r->rv30){ //RV30 marks both subblocks on the edge for filtering |
| 1184 | vmvmask |= (vmvmask & 0x4444) >> 1; |
| 1185 | hmvmask |= (hmvmask & 0x0F00) >> 4; |
| 1186 | if(s->mb_x) |
| 1187 | r->deblock_coefs[s->mb_x - 1 + s->mb_y*s->mb_stride] |= (vmvmask & 0x1111) << 3; |
| 1188 | if(!s->first_slice_line) |
| 1189 | r->deblock_coefs[s->mb_x + (s->mb_y - 1)*s->mb_stride] |= (hmvmask & 0xF) << 12; |
| 1190 | } |
| 1191 | return hmvmask | vmvmask; |
| 1192 | } |
| 1193 | |
| 1194 | static int rv34_decode_inter_macroblock(RV34DecContext *r, int8_t *intra_types) |
| 1195 | { |
| 1196 | MpegEncContext *s = &r->s; |
| 1197 | GetBitContext *gb = &s->gb; |
| 1198 | uint8_t *dst = s->dest[0]; |
| 1199 | int16_t *ptr = s->block[0]; |
| 1200 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 1201 | int cbp, cbp2; |
| 1202 | int q_dc, q_ac, has_ac; |
| 1203 | int i, j; |
| 1204 | int dist; |
| 1205 | |
| 1206 | // Calculate which neighbours are available. Maybe it's worth optimizing too. |
| 1207 | memset(r->avail_cache, 0, sizeof(r->avail_cache)); |
| 1208 | fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4); |
| 1209 | dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width; |
| 1210 | if(s->mb_x && dist) |
| 1211 | r->avail_cache[5] = |
| 1212 | r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1]; |
| 1213 | if(dist >= s->mb_width) |
| 1214 | r->avail_cache[2] = |
| 1215 | r->avail_cache[3] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride]; |
| 1216 | if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1) |
| 1217 | r->avail_cache[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1]; |
| 1218 | if(s->mb_x && dist > s->mb_width) |
| 1219 | r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1]; |
| 1220 | |
| 1221 | s->qscale = r->si.quant; |
| 1222 | cbp = cbp2 = rv34_decode_inter_mb_header(r, intra_types); |
| 1223 | r->cbp_luma [mb_pos] = cbp; |
| 1224 | r->cbp_chroma[mb_pos] = cbp >> 16; |
| 1225 | r->deblock_coefs[mb_pos] = rv34_set_deblock_coef(r) | r->cbp_luma[mb_pos]; |
| 1226 | s->current_picture_ptr->qscale_table[mb_pos] = s->qscale; |
| 1227 | |
| 1228 | if(cbp == -1) |
| 1229 | return -1; |
| 1230 | |
| 1231 | if (IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){ |
| 1232 | if(r->is16) rv34_output_i16x16(r, intra_types, cbp); |
| 1233 | else rv34_output_intra(r, intra_types, cbp); |
| 1234 | return 0; |
| 1235 | } |
| 1236 | |
| 1237 | if(r->is16){ |
| 1238 | // Only for RV34_MB_P_MIX16x16 |
| 1239 | LOCAL_ALIGNED_16(int16_t, block16, [16]); |
| 1240 | memset(block16, 0, 16 * sizeof(*block16)); |
| 1241 | q_dc = rv34_qscale_tab[ r->luma_dc_quant_p[s->qscale] ]; |
| 1242 | q_ac = rv34_qscale_tab[s->qscale]; |
| 1243 | if (rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac)) |
| 1244 | r->rdsp.rv34_inv_transform(block16); |
| 1245 | else |
| 1246 | r->rdsp.rv34_inv_transform_dc(block16); |
| 1247 | |
| 1248 | q_ac = rv34_qscale_tab[s->qscale]; |
| 1249 | |
| 1250 | for(j = 0; j < 4; j++){ |
| 1251 | for(i = 0; i < 4; i++, cbp >>= 1){ |
| 1252 | int dc = block16[i + j*4]; |
| 1253 | |
| 1254 | if(cbp & 1){ |
| 1255 | has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac); |
| 1256 | }else |
| 1257 | has_ac = 0; |
| 1258 | |
| 1259 | if(has_ac){ |
| 1260 | ptr[0] = dc; |
| 1261 | r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr); |
| 1262 | }else |
| 1263 | r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc); |
| 1264 | } |
| 1265 | |
| 1266 | dst += 4*s->linesize; |
| 1267 | } |
| 1268 | |
| 1269 | r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1); |
| 1270 | }else{ |
| 1271 | q_ac = rv34_qscale_tab[s->qscale]; |
| 1272 | |
| 1273 | for(j = 0; j < 4; j++){ |
| 1274 | for(i = 0; i < 4; i++, cbp >>= 1){ |
| 1275 | if(!(cbp & 1)) continue; |
| 1276 | |
| 1277 | rv34_process_block(r, dst + 4*i, s->linesize, |
| 1278 | r->luma_vlc, 0, q_ac, q_ac); |
| 1279 | } |
| 1280 | dst += 4*s->linesize; |
| 1281 | } |
| 1282 | } |
| 1283 | |
| 1284 | q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]]; |
| 1285 | q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]]; |
| 1286 | |
| 1287 | for(j = 1; j < 3; j++){ |
| 1288 | dst = s->dest[j]; |
| 1289 | for(i = 0; i < 4; i++, cbp >>= 1){ |
| 1290 | uint8_t *pdst; |
| 1291 | if(!(cbp & 1)) continue; |
| 1292 | pdst = dst + (i&1)*4 + (i&2)*2*s->uvlinesize; |
| 1293 | |
| 1294 | rv34_process_block(r, pdst, s->uvlinesize, |
| 1295 | r->chroma_vlc, 1, q_dc, q_ac); |
| 1296 | } |
| 1297 | } |
| 1298 | |
| 1299 | return 0; |
| 1300 | } |
| 1301 | |
| 1302 | static int rv34_decode_intra_macroblock(RV34DecContext *r, int8_t *intra_types) |
| 1303 | { |
| 1304 | MpegEncContext *s = &r->s; |
| 1305 | int cbp, dist; |
| 1306 | int mb_pos = s->mb_x + s->mb_y * s->mb_stride; |
| 1307 | |
| 1308 | // Calculate which neighbours are available. Maybe it's worth optimizing too. |
| 1309 | memset(r->avail_cache, 0, sizeof(r->avail_cache)); |
| 1310 | fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4); |
| 1311 | dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width; |
| 1312 | if(s->mb_x && dist) |
| 1313 | r->avail_cache[5] = |
| 1314 | r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1]; |
| 1315 | if(dist >= s->mb_width) |
| 1316 | r->avail_cache[2] = |
| 1317 | r->avail_cache[3] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride]; |
| 1318 | if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1) |
| 1319 | r->avail_cache[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1]; |
| 1320 | if(s->mb_x && dist > s->mb_width) |
| 1321 | r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1]; |
| 1322 | |
| 1323 | s->qscale = r->si.quant; |
| 1324 | cbp = rv34_decode_intra_mb_header(r, intra_types); |
| 1325 | r->cbp_luma [mb_pos] = cbp; |
| 1326 | r->cbp_chroma[mb_pos] = cbp >> 16; |
| 1327 | r->deblock_coefs[mb_pos] = 0xFFFF; |
| 1328 | s->current_picture_ptr->qscale_table[mb_pos] = s->qscale; |
| 1329 | |
| 1330 | if(cbp == -1) |
| 1331 | return -1; |
| 1332 | |
| 1333 | if(r->is16){ |
| 1334 | rv34_output_i16x16(r, intra_types, cbp); |
| 1335 | return 0; |
| 1336 | } |
| 1337 | |
| 1338 | rv34_output_intra(r, intra_types, cbp); |
| 1339 | return 0; |
| 1340 | } |
| 1341 | |
| 1342 | static int check_slice_end(RV34DecContext *r, MpegEncContext *s) |
| 1343 | { |
| 1344 | int bits; |
| 1345 | if(s->mb_y >= s->mb_height) |
| 1346 | return 1; |
| 1347 | if(!s->mb_num_left) |
| 1348 | return 1; |
| 1349 | if(r->s.mb_skip_run > 1) |
| 1350 | return 0; |
| 1351 | bits = get_bits_left(&s->gb); |
| 1352 | if(bits <= 0 || (bits < 8 && !show_bits(&s->gb, bits))) |
| 1353 | return 1; |
| 1354 | return 0; |
| 1355 | } |
| 1356 | |
| 1357 | |
| 1358 | static void rv34_decoder_free(RV34DecContext *r) |
| 1359 | { |
| 1360 | av_freep(&r->intra_types_hist); |
| 1361 | r->intra_types = NULL; |
| 1362 | av_freep(&r->tmp_b_block_base); |
| 1363 | av_freep(&r->mb_type); |
| 1364 | av_freep(&r->cbp_luma); |
| 1365 | av_freep(&r->cbp_chroma); |
| 1366 | av_freep(&r->deblock_coefs); |
| 1367 | } |
| 1368 | |
| 1369 | |
| 1370 | static int rv34_decoder_alloc(RV34DecContext *r) |
| 1371 | { |
| 1372 | r->intra_types_stride = r->s.mb_width * 4 + 4; |
| 1373 | |
| 1374 | r->cbp_chroma = av_mallocz(r->s.mb_stride * r->s.mb_height * |
| 1375 | sizeof(*r->cbp_chroma)); |
| 1376 | r->cbp_luma = av_mallocz(r->s.mb_stride * r->s.mb_height * |
| 1377 | sizeof(*r->cbp_luma)); |
| 1378 | r->deblock_coefs = av_mallocz(r->s.mb_stride * r->s.mb_height * |
| 1379 | sizeof(*r->deblock_coefs)); |
| 1380 | r->intra_types_hist = av_malloc(r->intra_types_stride * 4 * 2 * |
| 1381 | sizeof(*r->intra_types_hist)); |
| 1382 | r->mb_type = av_mallocz(r->s.mb_stride * r->s.mb_height * |
| 1383 | sizeof(*r->mb_type)); |
| 1384 | |
| 1385 | if (!(r->cbp_chroma && r->cbp_luma && r->deblock_coefs && |
| 1386 | r->intra_types_hist && r->mb_type)) { |
| 1387 | rv34_decoder_free(r); |
| 1388 | return AVERROR(ENOMEM); |
| 1389 | } |
| 1390 | |
| 1391 | r->intra_types = r->intra_types_hist + r->intra_types_stride * 4; |
| 1392 | |
| 1393 | return 0; |
| 1394 | } |
| 1395 | |
| 1396 | |
| 1397 | static int rv34_decoder_realloc(RV34DecContext *r) |
| 1398 | { |
| 1399 | rv34_decoder_free(r); |
| 1400 | return rv34_decoder_alloc(r); |
| 1401 | } |
| 1402 | |
| 1403 | |
| 1404 | static int rv34_decode_slice(RV34DecContext *r, int end, const uint8_t* buf, int buf_size) |
| 1405 | { |
| 1406 | MpegEncContext *s = &r->s; |
| 1407 | GetBitContext *gb = &s->gb; |
| 1408 | int mb_pos, slice_type; |
| 1409 | int res; |
| 1410 | |
| 1411 | init_get_bits(&r->s.gb, buf, buf_size*8); |
| 1412 | res = r->parse_slice_header(r, gb, &r->si); |
| 1413 | if(res < 0){ |
| 1414 | av_log(s->avctx, AV_LOG_ERROR, "Incorrect or unknown slice header\n"); |
| 1415 | return -1; |
| 1416 | } |
| 1417 | |
| 1418 | slice_type = r->si.type ? r->si.type : AV_PICTURE_TYPE_I; |
| 1419 | if (slice_type != s->pict_type) { |
| 1420 | av_log(s->avctx, AV_LOG_ERROR, "Slice type mismatch\n"); |
| 1421 | return AVERROR_INVALIDDATA; |
| 1422 | } |
| 1423 | if (s->width != r->si.width || s->height != r->si.height) { |
| 1424 | av_log(s->avctx, AV_LOG_ERROR, "Size mismatch\n"); |
| 1425 | return AVERROR_INVALIDDATA; |
| 1426 | } |
| 1427 | |
| 1428 | r->si.end = end; |
| 1429 | s->qscale = r->si.quant; |
| 1430 | s->mb_num_left = r->si.end - r->si.start; |
| 1431 | r->s.mb_skip_run = 0; |
| 1432 | |
| 1433 | mb_pos = s->mb_x + s->mb_y * s->mb_width; |
| 1434 | if(r->si.start != mb_pos){ |
| 1435 | av_log(s->avctx, AV_LOG_ERROR, "Slice indicates MB offset %d, got %d\n", r->si.start, mb_pos); |
| 1436 | s->mb_x = r->si.start % s->mb_width; |
| 1437 | s->mb_y = r->si.start / s->mb_width; |
| 1438 | } |
| 1439 | memset(r->intra_types_hist, -1, r->intra_types_stride * 4 * 2 * sizeof(*r->intra_types_hist)); |
| 1440 | s->first_slice_line = 1; |
| 1441 | s->resync_mb_x = s->mb_x; |
| 1442 | s->resync_mb_y = s->mb_y; |
| 1443 | |
| 1444 | ff_init_block_index(s); |
| 1445 | while(!check_slice_end(r, s)) { |
| 1446 | ff_update_block_index(s); |
| 1447 | |
| 1448 | if(r->si.type) |
| 1449 | res = rv34_decode_inter_macroblock(r, r->intra_types + s->mb_x * 4 + 4); |
| 1450 | else |
| 1451 | res = rv34_decode_intra_macroblock(r, r->intra_types + s->mb_x * 4 + 4); |
| 1452 | if(res < 0){ |
| 1453 | ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_ERROR); |
| 1454 | return -1; |
| 1455 | } |
| 1456 | if (++s->mb_x == s->mb_width) { |
| 1457 | s->mb_x = 0; |
| 1458 | s->mb_y++; |
| 1459 | ff_init_block_index(s); |
| 1460 | |
| 1461 | memmove(r->intra_types_hist, r->intra_types, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist)); |
| 1462 | memset(r->intra_types, -1, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist)); |
| 1463 | |
| 1464 | if(r->loop_filter && s->mb_y >= 2) |
| 1465 | r->loop_filter(r, s->mb_y - 2); |
| 1466 | |
| 1467 | if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) |
| 1468 | ff_thread_report_progress(&s->current_picture_ptr->tf, |
| 1469 | s->mb_y - 2, 0); |
| 1470 | |
| 1471 | } |
| 1472 | if(s->mb_x == s->resync_mb_x) |
| 1473 | s->first_slice_line=0; |
| 1474 | s->mb_num_left--; |
| 1475 | } |
| 1476 | ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_END); |
| 1477 | |
| 1478 | return s->mb_y == s->mb_height; |
| 1479 | } |
| 1480 | |
| 1481 | /** @} */ // recons group end |
| 1482 | |
| 1483 | /** |
| 1484 | * Initialize decoder. |
| 1485 | */ |
| 1486 | av_cold int ff_rv34_decode_init(AVCodecContext *avctx) |
| 1487 | { |
| 1488 | RV34DecContext *r = avctx->priv_data; |
| 1489 | MpegEncContext *s = &r->s; |
| 1490 | int ret; |
| 1491 | |
| 1492 | ff_mpv_decode_defaults(s); |
| 1493 | ff_mpv_decode_init(s, avctx); |
| 1494 | s->out_format = FMT_H263; |
| 1495 | |
| 1496 | avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
| 1497 | avctx->has_b_frames = 1; |
| 1498 | s->low_delay = 0; |
| 1499 | |
| 1500 | ff_mpv_idct_init(s); |
| 1501 | if ((ret = ff_mpv_common_init(s)) < 0) |
| 1502 | return ret; |
| 1503 | |
| 1504 | ff_h264_pred_init(&r->h, AV_CODEC_ID_RV40, 8, 1); |
| 1505 | |
| 1506 | #if CONFIG_RV30_DECODER |
| 1507 | if (avctx->codec_id == AV_CODEC_ID_RV30) |
| 1508 | ff_rv30dsp_init(&r->rdsp); |
| 1509 | #endif |
| 1510 | #if CONFIG_RV40_DECODER |
| 1511 | if (avctx->codec_id == AV_CODEC_ID_RV40) |
| 1512 | ff_rv40dsp_init(&r->rdsp); |
| 1513 | #endif |
| 1514 | |
| 1515 | if ((ret = rv34_decoder_alloc(r)) < 0) { |
| 1516 | ff_mpv_common_end(&r->s); |
| 1517 | return ret; |
| 1518 | } |
| 1519 | |
| 1520 | if(!intra_vlcs[0].cbppattern[0].bits) |
| 1521 | rv34_init_tables(); |
| 1522 | |
| 1523 | avctx->internal->allocate_progress = 1; |
| 1524 | |
| 1525 | return 0; |
| 1526 | } |
| 1527 | |
| 1528 | int ff_rv34_decode_init_thread_copy(AVCodecContext *avctx) |
| 1529 | { |
| 1530 | int err; |
| 1531 | RV34DecContext *r = avctx->priv_data; |
| 1532 | |
| 1533 | r->s.avctx = avctx; |
| 1534 | |
| 1535 | if (avctx->internal->is_copy) { |
| 1536 | r->tmp_b_block_base = NULL; |
| 1537 | ff_mpv_idct_init(&r->s); |
| 1538 | if ((err = ff_mpv_common_init(&r->s)) < 0) |
| 1539 | return err; |
| 1540 | if ((err = rv34_decoder_alloc(r)) < 0) { |
| 1541 | ff_mpv_common_end(&r->s); |
| 1542 | return err; |
| 1543 | } |
| 1544 | } |
| 1545 | |
| 1546 | return 0; |
| 1547 | } |
| 1548 | |
| 1549 | int ff_rv34_decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src) |
| 1550 | { |
| 1551 | RV34DecContext *r = dst->priv_data, *r1 = src->priv_data; |
| 1552 | MpegEncContext * const s = &r->s, * const s1 = &r1->s; |
| 1553 | int err; |
| 1554 | |
| 1555 | if (dst == src || !s1->context_initialized) |
| 1556 | return 0; |
| 1557 | |
| 1558 | if (s->height != s1->height || s->width != s1->width) { |
| 1559 | s->height = s1->height; |
| 1560 | s->width = s1->width; |
| 1561 | if ((err = ff_mpv_common_frame_size_change(s)) < 0) |
| 1562 | return err; |
| 1563 | if ((err = rv34_decoder_realloc(r)) < 0) |
| 1564 | return err; |
| 1565 | } |
| 1566 | |
| 1567 | r->cur_pts = r1->cur_pts; |
| 1568 | r->last_pts = r1->last_pts; |
| 1569 | r->next_pts = r1->next_pts; |
| 1570 | |
| 1571 | memset(&r->si, 0, sizeof(r->si)); |
| 1572 | |
| 1573 | // Do no call ff_mpeg_update_thread_context on a partially initialized |
| 1574 | // decoder context. |
| 1575 | if (!s1->linesize) |
| 1576 | return 0; |
| 1577 | |
| 1578 | return ff_mpeg_update_thread_context(dst, src); |
| 1579 | } |
| 1580 | |
| 1581 | static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n) |
| 1582 | { |
| 1583 | if(avctx->slice_count) return avctx->slice_offset[n]; |
| 1584 | else return AV_RL32(buf + n*8 - 4) == 1 ? AV_RL32(buf + n*8) : AV_RB32(buf + n*8); |
| 1585 | } |
| 1586 | |
| 1587 | static int finish_frame(AVCodecContext *avctx, AVFrame *pict) |
| 1588 | { |
| 1589 | RV34DecContext *r = avctx->priv_data; |
| 1590 | MpegEncContext *s = &r->s; |
| 1591 | int got_picture = 0, ret; |
| 1592 | |
| 1593 | ff_er_frame_end(&s->er); |
| 1594 | ff_mpv_frame_end(s); |
| 1595 | s->mb_num_left = 0; |
| 1596 | |
| 1597 | if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) |
| 1598 | ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0); |
| 1599 | |
| 1600 | if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) { |
| 1601 | if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0) |
| 1602 | return ret; |
| 1603 | ff_print_debug_info(s, s->current_picture_ptr, pict); |
| 1604 | ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG1); |
| 1605 | got_picture = 1; |
| 1606 | } else if (s->last_picture_ptr) { |
| 1607 | if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0) |
| 1608 | return ret; |
| 1609 | ff_print_debug_info(s, s->last_picture_ptr, pict); |
| 1610 | ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_QSCALE_TYPE_MPEG1); |
| 1611 | got_picture = 1; |
| 1612 | } |
| 1613 | |
| 1614 | return got_picture; |
| 1615 | } |
| 1616 | |
| 1617 | static AVRational update_sar(int old_w, int old_h, AVRational sar, int new_w, int new_h) |
| 1618 | { |
| 1619 | // attempt to keep aspect during typical resolution switches |
| 1620 | if (!sar.num) |
| 1621 | sar = (AVRational){1, 1}; |
| 1622 | |
| 1623 | sar = av_mul_q(sar, (AVRational){new_h * old_w, new_w * old_h}); |
| 1624 | return sar; |
| 1625 | } |
| 1626 | |
| 1627 | int ff_rv34_decode_frame(AVCodecContext *avctx, |
| 1628 | void *data, int *got_picture_ptr, |
| 1629 | AVPacket *avpkt) |
| 1630 | { |
| 1631 | const uint8_t *buf = avpkt->data; |
| 1632 | int buf_size = avpkt->size; |
| 1633 | RV34DecContext *r = avctx->priv_data; |
| 1634 | MpegEncContext *s = &r->s; |
| 1635 | AVFrame *pict = data; |
| 1636 | SliceInfo si; |
| 1637 | int i, ret; |
| 1638 | int slice_count; |
| 1639 | const uint8_t *slices_hdr = NULL; |
| 1640 | int last = 0; |
| 1641 | |
| 1642 | /* no supplementary picture */ |
| 1643 | if (buf_size == 0) { |
| 1644 | /* special case for last picture */ |
| 1645 | if (s->low_delay==0 && s->next_picture_ptr) { |
| 1646 | if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0) |
| 1647 | return ret; |
| 1648 | s->next_picture_ptr = NULL; |
| 1649 | |
| 1650 | *got_picture_ptr = 1; |
| 1651 | } |
| 1652 | return 0; |
| 1653 | } |
| 1654 | |
| 1655 | if(!avctx->slice_count){ |
| 1656 | slice_count = (*buf++) + 1; |
| 1657 | slices_hdr = buf + 4; |
| 1658 | buf += 8 * slice_count; |
| 1659 | buf_size -= 1 + 8 * slice_count; |
| 1660 | }else |
| 1661 | slice_count = avctx->slice_count; |
| 1662 | |
| 1663 | //parse first slice header to check whether this frame can be decoded |
| 1664 | if(get_slice_offset(avctx, slices_hdr, 0) < 0 || |
| 1665 | get_slice_offset(avctx, slices_hdr, 0) > buf_size){ |
| 1666 | av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n"); |
| 1667 | return AVERROR_INVALIDDATA; |
| 1668 | } |
| 1669 | init_get_bits(&s->gb, buf+get_slice_offset(avctx, slices_hdr, 0), (buf_size-get_slice_offset(avctx, slices_hdr, 0))*8); |
| 1670 | if(r->parse_slice_header(r, &r->s.gb, &si) < 0 || si.start){ |
| 1671 | av_log(avctx, AV_LOG_ERROR, "First slice header is incorrect\n"); |
| 1672 | return AVERROR_INVALIDDATA; |
| 1673 | } |
| 1674 | if ((!s->last_picture_ptr || !s->last_picture_ptr->f->data[0]) && |
| 1675 | si.type == AV_PICTURE_TYPE_B) { |
| 1676 | av_log(avctx, AV_LOG_ERROR, "Invalid decoder state: B-frame without " |
| 1677 | "reference data.\n"); |
| 1678 | return AVERROR_INVALIDDATA; |
| 1679 | } |
| 1680 | if( (avctx->skip_frame >= AVDISCARD_NONREF && si.type==AV_PICTURE_TYPE_B) |
| 1681 | || (avctx->skip_frame >= AVDISCARD_NONKEY && si.type!=AV_PICTURE_TYPE_I) |
| 1682 | || avctx->skip_frame >= AVDISCARD_ALL) |
| 1683 | return avpkt->size; |
| 1684 | |
| 1685 | /* first slice */ |
| 1686 | if (si.start == 0) { |
| 1687 | if (s->mb_num_left > 0 && s->current_picture_ptr) { |
| 1688 | av_log(avctx, AV_LOG_ERROR, "New frame but still %d MB left.\n", |
| 1689 | s->mb_num_left); |
| 1690 | ff_er_frame_end(&s->er); |
| 1691 | ff_mpv_frame_end(s); |
| 1692 | } |
| 1693 | |
| 1694 | if (s->width != si.width || s->height != si.height) { |
| 1695 | int err; |
| 1696 | |
| 1697 | av_log(s->avctx, AV_LOG_WARNING, "Changing dimensions to %dx%d\n", |
| 1698 | si.width, si.height); |
| 1699 | |
| 1700 | if (av_image_check_size(si.width, si.height, 0, s->avctx)) |
| 1701 | return AVERROR_INVALIDDATA; |
| 1702 | |
| 1703 | s->avctx->sample_aspect_ratio = update_sar( |
| 1704 | s->width, s->height, s->avctx->sample_aspect_ratio, |
| 1705 | si.width, si.height); |
| 1706 | s->width = si.width; |
| 1707 | s->height = si.height; |
| 1708 | |
| 1709 | err = ff_set_dimensions(s->avctx, s->width, s->height); |
| 1710 | if (err < 0) |
| 1711 | return err; |
| 1712 | |
| 1713 | if ((err = ff_mpv_common_frame_size_change(s)) < 0) |
| 1714 | return err; |
| 1715 | if ((err = rv34_decoder_realloc(r)) < 0) |
| 1716 | return err; |
| 1717 | } |
| 1718 | s->pict_type = si.type ? si.type : AV_PICTURE_TYPE_I; |
| 1719 | if (ff_mpv_frame_start(s, s->avctx) < 0) |
| 1720 | return -1; |
| 1721 | ff_mpeg_er_frame_start(s); |
| 1722 | if (!r->tmp_b_block_base) { |
| 1723 | int i; |
| 1724 | |
| 1725 | r->tmp_b_block_base = av_malloc(s->linesize * 48); |
| 1726 | for (i = 0; i < 2; i++) |
| 1727 | r->tmp_b_block_y[i] = r->tmp_b_block_base |
| 1728 | + i * 16 * s->linesize; |
| 1729 | for (i = 0; i < 4; i++) |
| 1730 | r->tmp_b_block_uv[i] = r->tmp_b_block_base + 32 * s->linesize |
| 1731 | + (i >> 1) * 8 * s->uvlinesize |
| 1732 | + (i & 1) * 16; |
| 1733 | } |
| 1734 | r->cur_pts = si.pts; |
| 1735 | if (s->pict_type != AV_PICTURE_TYPE_B) { |
| 1736 | r->last_pts = r->next_pts; |
| 1737 | r->next_pts = r->cur_pts; |
| 1738 | } else { |
| 1739 | int refdist = GET_PTS_DIFF(r->next_pts, r->last_pts); |
| 1740 | int dist0 = GET_PTS_DIFF(r->cur_pts, r->last_pts); |
| 1741 | int dist1 = GET_PTS_DIFF(r->next_pts, r->cur_pts); |
| 1742 | |
| 1743 | if(!refdist){ |
| 1744 | r->mv_weight1 = r->mv_weight2 = r->weight1 = r->weight2 = 8192; |
| 1745 | r->scaled_weight = 0; |
| 1746 | }else{ |
| 1747 | r->mv_weight1 = (dist0 << 14) / refdist; |
| 1748 | r->mv_weight2 = (dist1 << 14) / refdist; |
| 1749 | if((r->mv_weight1|r->mv_weight2) & 511){ |
| 1750 | r->weight1 = r->mv_weight1; |
| 1751 | r->weight2 = r->mv_weight2; |
| 1752 | r->scaled_weight = 0; |
| 1753 | }else{ |
| 1754 | r->weight1 = r->mv_weight1 >> 9; |
| 1755 | r->weight2 = r->mv_weight2 >> 9; |
| 1756 | r->scaled_weight = 1; |
| 1757 | } |
| 1758 | } |
| 1759 | } |
| 1760 | s->mb_x = s->mb_y = 0; |
| 1761 | ff_thread_finish_setup(s->avctx); |
| 1762 | } else if (HAVE_THREADS && |
| 1763 | (s->avctx->active_thread_type & FF_THREAD_FRAME)) { |
| 1764 | av_log(s->avctx, AV_LOG_ERROR, "Decoder needs full frames in frame " |
| 1765 | "multithreading mode (start MB is %d).\n", si.start); |
| 1766 | return AVERROR_INVALIDDATA; |
| 1767 | } |
| 1768 | |
| 1769 | for(i = 0; i < slice_count; i++){ |
| 1770 | int offset = get_slice_offset(avctx, slices_hdr, i); |
| 1771 | int size; |
| 1772 | if(i+1 == slice_count) |
| 1773 | size = buf_size - offset; |
| 1774 | else |
| 1775 | size = get_slice_offset(avctx, slices_hdr, i+1) - offset; |
| 1776 | |
| 1777 | if(offset < 0 || offset > buf_size){ |
| 1778 | av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n"); |
| 1779 | break; |
| 1780 | } |
| 1781 | |
| 1782 | r->si.end = s->mb_width * s->mb_height; |
| 1783 | s->mb_num_left = r->s.mb_x + r->s.mb_y*r->s.mb_width - r->si.start; |
| 1784 | |
| 1785 | if(i+1 < slice_count){ |
| 1786 | if (get_slice_offset(avctx, slices_hdr, i+1) < 0 || |
| 1787 | get_slice_offset(avctx, slices_hdr, i+1) > buf_size) { |
| 1788 | av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n"); |
| 1789 | break; |
| 1790 | } |
| 1791 | 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); |
| 1792 | if(r->parse_slice_header(r, &r->s.gb, &si) < 0){ |
| 1793 | if(i+2 < slice_count) |
| 1794 | size = get_slice_offset(avctx, slices_hdr, i+2) - offset; |
| 1795 | else |
| 1796 | size = buf_size - offset; |
| 1797 | }else |
| 1798 | r->si.end = si.start; |
| 1799 | } |
| 1800 | if (size < 0 || size > buf_size - offset) { |
| 1801 | av_log(avctx, AV_LOG_ERROR, "Slice size is invalid\n"); |
| 1802 | break; |
| 1803 | } |
| 1804 | last = rv34_decode_slice(r, r->si.end, buf + offset, size); |
| 1805 | if(last) |
| 1806 | break; |
| 1807 | } |
| 1808 | |
| 1809 | if (s->current_picture_ptr) { |
| 1810 | if (last) { |
| 1811 | if(r->loop_filter) |
| 1812 | r->loop_filter(r, s->mb_height - 1); |
| 1813 | |
| 1814 | ret = finish_frame(avctx, pict); |
| 1815 | if (ret < 0) |
| 1816 | return ret; |
| 1817 | *got_picture_ptr = ret; |
| 1818 | } else if (HAVE_THREADS && |
| 1819 | (s->avctx->active_thread_type & FF_THREAD_FRAME)) { |
| 1820 | av_log(avctx, AV_LOG_INFO, "marking unfished frame as finished\n"); |
| 1821 | /* always mark the current frame as finished, frame-mt supports |
| 1822 | * only complete frames */ |
| 1823 | ff_er_frame_end(&s->er); |
| 1824 | ff_mpv_frame_end(s); |
| 1825 | s->mb_num_left = 0; |
| 1826 | ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0); |
| 1827 | return AVERROR_INVALIDDATA; |
| 1828 | } |
| 1829 | } |
| 1830 | |
| 1831 | return avpkt->size; |
| 1832 | } |
| 1833 | |
| 1834 | av_cold int ff_rv34_decode_end(AVCodecContext *avctx) |
| 1835 | { |
| 1836 | RV34DecContext *r = avctx->priv_data; |
| 1837 | |
| 1838 | ff_mpv_common_end(&r->s); |
| 1839 | rv34_decoder_free(r); |
| 1840 | |
| 1841 | return 0; |
| 1842 | } |