1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358
|
/*
* Bink video decoder
* Copyright (c) 2009 Konstantin Shishkov
* Copyright (C) 2011 Peter Ross <pross@xvid.org>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/attributes.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#define BITSTREAM_READER_LE
#include "avcodec.h"
#include "binkdata.h"
#include "binkdsp.h"
#include "blockdsp.h"
#include "get_bits.h"
#include "hpeldsp.h"
#include "internal.h"
#include "mathops.h"
#define BINK_FLAG_ALPHA 0x00100000
#define BINK_FLAG_GRAY 0x00020000
static VLC bink_trees[16];
/**
* IDs for different data types used in old version of Bink video codec
*/
enum OldSources {
BINKB_SRC_BLOCK_TYPES = 0, ///< 8x8 block types
BINKB_SRC_COLORS, ///< pixel values used for different block types
BINKB_SRC_PATTERN, ///< 8-bit values for 2-colour pattern fill
BINKB_SRC_X_OFF, ///< X components of motion value
BINKB_SRC_Y_OFF, ///< Y components of motion value
BINKB_SRC_INTRA_DC, ///< DC values for intrablocks with DCT
BINKB_SRC_INTER_DC, ///< DC values for interblocks with DCT
BINKB_SRC_INTRA_Q, ///< quantizer values for intrablocks with DCT
BINKB_SRC_INTER_Q, ///< quantizer values for interblocks with DCT
BINKB_SRC_INTER_COEFS, ///< number of coefficients for residue blocks
BINKB_NB_SRC
};
static const int binkb_bundle_sizes[BINKB_NB_SRC] = {
4, 8, 8, 5, 5, 11, 11, 4, 4, 7
};
static const int binkb_bundle_signed[BINKB_NB_SRC] = {
0, 0, 0, 1, 1, 0, 1, 0, 0, 0
};
static int32_t binkb_intra_quant[16][64];
static int32_t binkb_inter_quant[16][64];
/**
* IDs for different data types used in Bink video codec
*/
enum Sources {
BINK_SRC_BLOCK_TYPES = 0, ///< 8x8 block types
BINK_SRC_SUB_BLOCK_TYPES, ///< 16x16 block types (a subset of 8x8 block types)
BINK_SRC_COLORS, ///< pixel values used for different block types
BINK_SRC_PATTERN, ///< 8-bit values for 2-colour pattern fill
BINK_SRC_X_OFF, ///< X components of motion value
BINK_SRC_Y_OFF, ///< Y components of motion value
BINK_SRC_INTRA_DC, ///< DC values for intrablocks with DCT
BINK_SRC_INTER_DC, ///< DC values for interblocks with DCT
BINK_SRC_RUN, ///< run lengths for special fill block
BINK_NB_SRC
};
/**
* data needed to decode 4-bit Huffman-coded value
*/
typedef struct Tree {
int vlc_num; ///< tree number (in bink_trees[])
uint8_t syms[16]; ///< leaf value to symbol mapping
} Tree;
#define GET_HUFF(gb, tree) (tree).syms[get_vlc2(gb, bink_trees[(tree).vlc_num].table,\
bink_trees[(tree).vlc_num].bits, 1)]
/**
* data structure used for decoding single Bink data type
*/
typedef struct Bundle {
int len; ///< length of number of entries to decode (in bits)
Tree tree; ///< Huffman tree-related data
uint8_t *data; ///< buffer for decoded symbols
uint8_t *data_end; ///< buffer end
uint8_t *cur_dec; ///< pointer to the not yet decoded part of the buffer
uint8_t *cur_ptr; ///< pointer to the data that is not read from buffer yet
} Bundle;
/*
* Decoder context
*/
typedef struct BinkContext {
AVCodecContext *avctx;
BlockDSPContext bdsp;
HpelDSPContext hdsp;
BinkDSPContext binkdsp;
AVFrame *last;
int version; ///< internal Bink file version
int has_alpha;
int swap_planes;
unsigned frame_num;
Bundle bundle[BINKB_NB_SRC]; ///< bundles for decoding all data types
Tree col_high[16]; ///< trees for decoding high nibble in "colours" data type
int col_lastval; ///< value of last decoded high nibble in "colours" data type
} BinkContext;
/**
* Bink video block types
*/
enum BlockTypes {
SKIP_BLOCK = 0, ///< skipped block
SCALED_BLOCK, ///< block has size 16x16
MOTION_BLOCK, ///< block is copied from previous frame with some offset
RUN_BLOCK, ///< block is composed from runs of colours with custom scan order
RESIDUE_BLOCK, ///< motion block with some difference added
INTRA_BLOCK, ///< intra DCT block
FILL_BLOCK, ///< block is filled with single colour
INTER_BLOCK, ///< motion block with DCT applied to the difference
PATTERN_BLOCK, ///< block is filled with two colours following custom pattern
RAW_BLOCK, ///< uncoded 8x8 block
};
/**
* Initialize length in all bundles.
*
* @param c decoder context
* @param width plane width
* @param bw plane width in 8x8 blocks
*/
static void init_lengths(BinkContext *c, int width, int bw)
{
width = FFALIGN(width, 8);
c->bundle[BINK_SRC_BLOCK_TYPES].len = av_log2((width >> 3) + 511) + 1;
c->bundle[BINK_SRC_SUB_BLOCK_TYPES].len = av_log2((width >> 4) + 511) + 1;
c->bundle[BINK_SRC_COLORS].len = av_log2(bw*64 + 511) + 1;
c->bundle[BINK_SRC_INTRA_DC].len =
c->bundle[BINK_SRC_INTER_DC].len =
c->bundle[BINK_SRC_X_OFF].len =
c->bundle[BINK_SRC_Y_OFF].len = av_log2((width >> 3) + 511) + 1;
c->bundle[BINK_SRC_PATTERN].len = av_log2((bw << 3) + 511) + 1;
c->bundle[BINK_SRC_RUN].len = av_log2(bw*48 + 511) + 1;
}
/**
* Allocate memory for bundles.
*
* @param c decoder context
*/
static av_cold int init_bundles(BinkContext *c)
{
int bw, bh, blocks;
int i;
bw = (c->avctx->width + 7) >> 3;
bh = (c->avctx->height + 7) >> 3;
blocks = bw * bh;
for (i = 0; i < BINKB_NB_SRC; i++) {
c->bundle[i].data = av_mallocz(blocks * 64);
if (!c->bundle[i].data)
return AVERROR(ENOMEM);
c->bundle[i].data_end = c->bundle[i].data + blocks * 64;
}
return 0;
}
/**
* Free memory used by bundles.
*
* @param c decoder context
*/
static av_cold void free_bundles(BinkContext *c)
{
int i;
for (i = 0; i < BINKB_NB_SRC; i++)
av_freep(&c->bundle[i].data);
}
/**
* Merge two consequent lists of equal size depending on bits read.
*
* @param gb context for reading bits
* @param dst buffer where merged list will be written to
* @param src pointer to the head of the first list (the second lists starts at src+size)
* @param size input lists size
*/
static void merge(GetBitContext *gb, uint8_t *dst, uint8_t *src, int size)
{
uint8_t *src2 = src + size;
int size2 = size;
do {
if (!get_bits1(gb)) {
*dst++ = *src++;
size--;
} else {
*dst++ = *src2++;
size2--;
}
} while (size && size2);
while (size--)
*dst++ = *src++;
while (size2--)
*dst++ = *src2++;
}
/**
* Read information about Huffman tree used to decode data.
*
* @param gb context for reading bits
* @param tree pointer for storing tree data
*/
static void read_tree(GetBitContext *gb, Tree *tree)
{
uint8_t tmp1[16] = { 0 }, tmp2[16], *in = tmp1, *out = tmp2;
int i, t, len;
tree->vlc_num = get_bits(gb, 4);
if (!tree->vlc_num) {
for (i = 0; i < 16; i++)
tree->syms[i] = i;
return;
}
if (get_bits1(gb)) {
len = get_bits(gb, 3);
for (i = 0; i <= len; i++) {
tree->syms[i] = get_bits(gb, 4);
tmp1[tree->syms[i]] = 1;
}
for (i = 0; i < 16 && len < 16 - 1; i++)
if (!tmp1[i])
tree->syms[++len] = i;
} else {
len = get_bits(gb, 2);
for (i = 0; i < 16; i++)
in[i] = i;
for (i = 0; i <= len; i++) {
int size = 1 << i;
for (t = 0; t < 16; t += size << 1)
merge(gb, out + t, in + t, size);
FFSWAP(uint8_t*, in, out);
}
memcpy(tree->syms, in, 16);
}
}
/**
* Prepare bundle for decoding data.
*
* @param gb context for reading bits
* @param c decoder context
* @param bundle_num number of the bundle to initialize
*/
static void read_bundle(GetBitContext *gb, BinkContext *c, int bundle_num)
{
int i;
if (bundle_num == BINK_SRC_COLORS) {
for (i = 0; i < 16; i++)
read_tree(gb, &c->col_high[i]);
c->col_lastval = 0;
}
if (bundle_num != BINK_SRC_INTRA_DC && bundle_num != BINK_SRC_INTER_DC)
read_tree(gb, &c->bundle[bundle_num].tree);
c->bundle[bundle_num].cur_dec =
c->bundle[bundle_num].cur_ptr = c->bundle[bundle_num].data;
}
/**
* common check before starting decoding bundle data
*
* @param gb context for reading bits
* @param b bundle
* @param t variable where number of elements to decode will be stored
*/
#define CHECK_READ_VAL(gb, b, t) \
if (!b->cur_dec || (b->cur_dec > b->cur_ptr)) \
return 0; \
t = get_bits(gb, b->len); \
if (!t) { \
b->cur_dec = NULL; \
return 0; \
} \
static int read_runs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
{
int t, v;
const uint8_t *dec_end;
CHECK_READ_VAL(gb, b, t);
dec_end = b->cur_dec + t;
if (dec_end > b->data_end) {
av_log(avctx, AV_LOG_ERROR, "Run value went out of bounds\n");
return AVERROR_INVALIDDATA;
}
if (get_bits1(gb)) {
v = get_bits(gb, 4);
memset(b->cur_dec, v, t);
b->cur_dec += t;
} else {
while (b->cur_dec < dec_end)
*b->cur_dec++ = GET_HUFF(gb, b->tree);
}
return 0;
}
static int read_motion_values(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
{
int t, sign, v;
const uint8_t *dec_end;
CHECK_READ_VAL(gb, b, t);
dec_end = b->cur_dec + t;
if (dec_end > b->data_end) {
av_log(avctx, AV_LOG_ERROR, "Too many motion values\n");
return AVERROR_INVALIDDATA;
}
if (get_bits1(gb)) {
v = get_bits(gb, 4);
if (v) {
sign = -get_bits1(gb);
v = (v ^ sign) - sign;
}
memset(b->cur_dec, v, t);
b->cur_dec += t;
} else {
while (b->cur_dec < dec_end) {
v = GET_HUFF(gb, b->tree);
if (v) {
sign = -get_bits1(gb);
v = (v ^ sign) - sign;
}
*b->cur_dec++ = v;
}
}
return 0;
}
static const uint8_t bink_rlelens[4] = { 4, 8, 12, 32 };
static int read_block_types(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
{
int t, v;
int last = 0;
const uint8_t *dec_end;
CHECK_READ_VAL(gb, b, t);
dec_end = b->cur_dec + t;
if (dec_end > b->data_end) {
av_log(avctx, AV_LOG_ERROR, "Too many block type values\n");
return AVERROR_INVALIDDATA;
}
if (get_bits1(gb)) {
v = get_bits(gb, 4);
memset(b->cur_dec, v, t);
b->cur_dec += t;
} else {
while (b->cur_dec < dec_end) {
v = GET_HUFF(gb, b->tree);
if (v < 12) {
last = v;
*b->cur_dec++ = v;
} else {
int run = bink_rlelens[v - 12];
if (dec_end - b->cur_dec < run)
return AVERROR_INVALIDDATA;
memset(b->cur_dec, last, run);
b->cur_dec += run;
}
}
}
return 0;
}
static int read_patterns(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
{
int t, v;
const uint8_t *dec_end;
CHECK_READ_VAL(gb, b, t);
dec_end = b->cur_dec + t;
if (dec_end > b->data_end) {
av_log(avctx, AV_LOG_ERROR, "Too many pattern values\n");
return AVERROR_INVALIDDATA;
}
while (b->cur_dec < dec_end) {
v = GET_HUFF(gb, b->tree);
v |= GET_HUFF(gb, b->tree) << 4;
*b->cur_dec++ = v;
}
return 0;
}
static int read_colors(GetBitContext *gb, Bundle *b, BinkContext *c)
{
int t, sign, v;
const uint8_t *dec_end;
CHECK_READ_VAL(gb, b, t);
dec_end = b->cur_dec + t;
if (dec_end > b->data_end) {
av_log(c->avctx, AV_LOG_ERROR, "Too many color values\n");
return AVERROR_INVALIDDATA;
}
if (get_bits1(gb)) {
c->col_lastval = GET_HUFF(gb, c->col_high[c->col_lastval]);
v = GET_HUFF(gb, b->tree);
v = (c->col_lastval << 4) | v;
if (c->version < 'i') {
sign = ((int8_t) v) >> 7;
v = ((v & 0x7F) ^ sign) - sign;
v += 0x80;
}
memset(b->cur_dec, v, t);
b->cur_dec += t;
} else {
while (b->cur_dec < dec_end) {
c->col_lastval = GET_HUFF(gb, c->col_high[c->col_lastval]);
v = GET_HUFF(gb, b->tree);
v = (c->col_lastval << 4) | v;
if (c->version < 'i') {
sign = ((int8_t) v) >> 7;
v = ((v & 0x7F) ^ sign) - sign;
v += 0x80;
}
*b->cur_dec++ = v;
}
}
return 0;
}
/** number of bits used to store first DC value in bundle */
#define DC_START_BITS 11
static int read_dcs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b,
int start_bits, int has_sign)
{
int i, j, len, len2, bsize, sign, v, v2;
int16_t *dst = (int16_t*)b->cur_dec;
int16_t *dst_end = (int16_t*)b->data_end;
CHECK_READ_VAL(gb, b, len);
v = get_bits(gb, start_bits - has_sign);
if (v && has_sign) {
sign = -get_bits1(gb);
v = (v ^ sign) - sign;
}
if (dst_end - dst < 1)
return AVERROR_INVALIDDATA;
*dst++ = v;
len--;
for (i = 0; i < len; i += 8) {
len2 = FFMIN(len - i, 8);
if (dst_end - dst < len2)
return AVERROR_INVALIDDATA;
bsize = get_bits(gb, 4);
if (bsize) {
for (j = 0; j < len2; j++) {
v2 = get_bits(gb, bsize);
if (v2) {
sign = -get_bits1(gb);
v2 = (v2 ^ sign) - sign;
}
v += v2;
*dst++ = v;
if (v < -32768 || v > 32767) {
av_log(avctx, AV_LOG_ERROR, "DC value went out of bounds: %d\n", v);
return AVERROR_INVALIDDATA;
}
}
} else {
for (j = 0; j < len2; j++)
*dst++ = v;
}
}
b->cur_dec = (uint8_t*)dst;
return 0;
}
/**
* Retrieve next value from bundle.
*
* @param c decoder context
* @param bundle bundle number
*/
static inline int get_value(BinkContext *c, int bundle)
{
int ret;
if (bundle < BINK_SRC_X_OFF || bundle == BINK_SRC_RUN)
return *c->bundle[bundle].cur_ptr++;
if (bundle == BINK_SRC_X_OFF || bundle == BINK_SRC_Y_OFF)
return (int8_t)*c->bundle[bundle].cur_ptr++;
ret = *(int16_t*)c->bundle[bundle].cur_ptr;
c->bundle[bundle].cur_ptr += 2;
return ret;
}
static av_cold void binkb_init_bundle(BinkContext *c, int bundle_num)
{
c->bundle[bundle_num].cur_dec =
c->bundle[bundle_num].cur_ptr = c->bundle[bundle_num].data;
c->bundle[bundle_num].len = 13;
}
static av_cold void binkb_init_bundles(BinkContext *c)
{
int i;
for (i = 0; i < BINKB_NB_SRC; i++)
binkb_init_bundle(c, i);
}
static int binkb_read_bundle(BinkContext *c, GetBitContext *gb, int bundle_num)
{
const int bits = binkb_bundle_sizes[bundle_num];
const int mask = 1 << (bits - 1);
const int issigned = binkb_bundle_signed[bundle_num];
Bundle *b = &c->bundle[bundle_num];
int i, len;
CHECK_READ_VAL(gb, b, len);
if (b->data_end - b->cur_dec < len * (1 + (bits > 8)))
return AVERROR_INVALIDDATA;
if (bits <= 8) {
if (!issigned) {
for (i = 0; i < len; i++)
*b->cur_dec++ = get_bits(gb, bits);
} else {
for (i = 0; i < len; i++)
*b->cur_dec++ = get_bits(gb, bits) - mask;
}
} else {
int16_t *dst = (int16_t*)b->cur_dec;
if (!issigned) {
for (i = 0; i < len; i++)
*dst++ = get_bits(gb, bits);
} else {
for (i = 0; i < len; i++)
*dst++ = get_bits(gb, bits) - mask;
}
b->cur_dec = (uint8_t*)dst;
}
return 0;
}
static inline int binkb_get_value(BinkContext *c, int bundle_num)
{
int16_t ret;
const int bits = binkb_bundle_sizes[bundle_num];
if (bits <= 8) {
int val = *c->bundle[bundle_num].cur_ptr++;
return binkb_bundle_signed[bundle_num] ? (int8_t)val : val;
}
ret = *(int16_t*)c->bundle[bundle_num].cur_ptr;
c->bundle[bundle_num].cur_ptr += 2;
return ret;
}
/**
* Read 8x8 block of DCT coefficients.
*
* @param gb context for reading bits
* @param block place for storing coefficients
* @param scan scan order table
* @param quant_matrices quantization matrices
* @return 0 for success, negative value in other cases
*/
static int read_dct_coeffs(GetBitContext *gb, int32_t block[64], const uint8_t *scan,
const int32_t quant_matrices[16][64], int q)
{
int coef_list[128];
int mode_list[128];
int i, t, bits, ccoef, mode, sign;
int list_start = 64, list_end = 64, list_pos;
int coef_count = 0;
int coef_idx[64];
int quant_idx;
const int32_t *quant;
coef_list[list_end] = 4; mode_list[list_end++] = 0;
coef_list[list_end] = 24; mode_list[list_end++] = 0;
coef_list[list_end] = 44; mode_list[list_end++] = 0;
coef_list[list_end] = 1; mode_list[list_end++] = 3;
coef_list[list_end] = 2; mode_list[list_end++] = 3;
coef_list[list_end] = 3; mode_list[list_end++] = 3;
for (bits = get_bits(gb, 4) - 1; bits >= 0; bits--) {
list_pos = list_start;
while (list_pos < list_end) {
if (!(mode_list[list_pos] | coef_list[list_pos]) || !get_bits1(gb)) {
list_pos++;
continue;
}
ccoef = coef_list[list_pos];
mode = mode_list[list_pos];
switch (mode) {
case 0:
coef_list[list_pos] = ccoef + 4;
mode_list[list_pos] = 1;
case 2:
if (mode == 2) {
coef_list[list_pos] = 0;
mode_list[list_pos++] = 0;
}
for (i = 0; i < 4; i++, ccoef++) {
if (get_bits1(gb)) {
coef_list[--list_start] = ccoef;
mode_list[ list_start] = 3;
} else {
if (!bits) {
t = 1 - (get_bits1(gb) << 1);
} else {
t = get_bits(gb, bits) | 1 << bits;
sign = -get_bits1(gb);
t = (t ^ sign) - sign;
}
block[scan[ccoef]] = t;
coef_idx[coef_count++] = ccoef;
}
}
break;
case 1:
mode_list[list_pos] = 2;
for (i = 0; i < 3; i++) {
ccoef += 4;
coef_list[list_end] = ccoef;
mode_list[list_end++] = 2;
}
break;
case 3:
if (!bits) {
t = 1 - (get_bits1(gb) << 1);
} else {
t = get_bits(gb, bits) | 1 << bits;
sign = -get_bits1(gb);
t = (t ^ sign) - sign;
}
block[scan[ccoef]] = t;
coef_idx[coef_count++] = ccoef;
coef_list[list_pos] = 0;
mode_list[list_pos++] = 0;
break;
}
}
}
if (q == -1) {
quant_idx = get_bits(gb, 4);
} else {
quant_idx = q;
if (quant_idx > 15U) {
av_log(NULL, AV_LOG_ERROR, "quant_index %d out of range\n", quant_idx);
return AVERROR_INVALIDDATA;
}
}
quant = quant_matrices[quant_idx];
block[0] = (block[0] * quant[0]) >> 11;
for (i = 0; i < coef_count; i++) {
int idx = coef_idx[i];
block[scan[idx]] = (block[scan[idx]] * quant[idx]) >> 11;
}
return 0;
}
/**
* Read 8x8 block with residue after motion compensation.
*
* @param gb context for reading bits
* @param block place to store read data
* @param masks_count number of masks to decode
* @return 0 on success, negative value in other cases
*/
static int read_residue(GetBitContext *gb, int16_t block[64], int masks_count)
{
int coef_list[128];
int mode_list[128];
int i, sign, mask, ccoef, mode;
int list_start = 64, list_end = 64, list_pos;
int nz_coeff[64];
int nz_coeff_count = 0;
coef_list[list_end] = 4; mode_list[list_end++] = 0;
coef_list[list_end] = 24; mode_list[list_end++] = 0;
coef_list[list_end] = 44; mode_list[list_end++] = 0;
coef_list[list_end] = 0; mode_list[list_end++] = 2;
for (mask = 1 << get_bits(gb, 3); mask; mask >>= 1) {
for (i = 0; i < nz_coeff_count; i++) {
if (!get_bits1(gb))
continue;
if (block[nz_coeff[i]] < 0)
block[nz_coeff[i]] -= mask;
else
block[nz_coeff[i]] += mask;
masks_count--;
if (masks_count < 0)
return 0;
}
list_pos = list_start;
while (list_pos < list_end) {
if (!(coef_list[list_pos] | mode_list[list_pos]) || !get_bits1(gb)) {
list_pos++;
continue;
}
ccoef = coef_list[list_pos];
mode = mode_list[list_pos];
switch (mode) {
case 0:
coef_list[list_pos] = ccoef + 4;
mode_list[list_pos] = 1;
case 2:
if (mode == 2) {
coef_list[list_pos] = 0;
mode_list[list_pos++] = 0;
}
for (i = 0; i < 4; i++, ccoef++) {
if (get_bits1(gb)) {
coef_list[--list_start] = ccoef;
mode_list[ list_start] = 3;
} else {
nz_coeff[nz_coeff_count++] = bink_scan[ccoef];
sign = -get_bits1(gb);
block[bink_scan[ccoef]] = (mask ^ sign) - sign;
masks_count--;
if (masks_count < 0)
return 0;
}
}
break;
case 1:
mode_list[list_pos] = 2;
for (i = 0; i < 3; i++) {
ccoef += 4;
coef_list[list_end] = ccoef;
mode_list[list_end++] = 2;
}
break;
case 3:
nz_coeff[nz_coeff_count++] = bink_scan[ccoef];
sign = -get_bits1(gb);
block[bink_scan[ccoef]] = (mask ^ sign) - sign;
coef_list[list_pos] = 0;
mode_list[list_pos++] = 0;
masks_count--;
if (masks_count < 0)
return 0;
break;
}
}
}
return 0;
}
/**
* Copy 8x8 block from source to destination, where src and dst may be overlapped
*/
static inline void put_pixels8x8_overlapped(uint8_t *dst, uint8_t *src, int stride)
{
uint8_t tmp[64];
int i;
for (i = 0; i < 8; i++)
memcpy(tmp + i*8, src + i*stride, 8);
for (i = 0; i < 8; i++)
memcpy(dst + i*stride, tmp + i*8, 8);
}
static int binkb_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb,
int plane_idx, int is_key, int is_chroma)
{
int blk, ret;
int i, j, bx, by;
uint8_t *dst, *ref, *ref_start, *ref_end;
int v, col[2];
const uint8_t *scan;
int xoff, yoff;
LOCAL_ALIGNED_16(int16_t, block, [64]);
LOCAL_ALIGNED_16(int32_t, dctblock, [64]);
int coordmap[64];
int ybias = is_key ? -15 : 0;
int qp;
const int stride = frame->linesize[plane_idx];
int bw = is_chroma ? (c->avctx->width + 15) >> 4 : (c->avctx->width + 7) >> 3;
int bh = is_chroma ? (c->avctx->height + 15) >> 4 : (c->avctx->height + 7) >> 3;
binkb_init_bundles(c);
ref_start = frame->data[plane_idx];
ref_end = frame->data[plane_idx] + (bh * frame->linesize[plane_idx] + bw) * 8;
for (i = 0; i < 64; i++)
coordmap[i] = (i & 7) + (i >> 3) * stride;
for (by = 0; by < bh; by++) {
for (i = 0; i < BINKB_NB_SRC; i++) {
if ((ret = binkb_read_bundle(c, gb, i)) < 0)
return ret;
}
dst = frame->data[plane_idx] + 8*by*stride;
for (bx = 0; bx < bw; bx++, dst += 8) {
blk = binkb_get_value(c, BINKB_SRC_BLOCK_TYPES);
switch (blk) {
case 0:
break;
case 1:
scan = bink_patterns[get_bits(gb, 4)];
i = 0;
do {
int mode, run;
mode = get_bits1(gb);
run = get_bits(gb, binkb_runbits[i]) + 1;
i += run;
if (i > 64) {
av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
return AVERROR_INVALIDDATA;
}
if (mode) {
v = binkb_get_value(c, BINKB_SRC_COLORS);
for (j = 0; j < run; j++)
dst[coordmap[*scan++]] = v;
} else {
for (j = 0; j < run; j++)
dst[coordmap[*scan++]] = binkb_get_value(c, BINKB_SRC_COLORS);
}
} while (i < 63);
if (i == 63)
dst[coordmap[*scan++]] = binkb_get_value(c, BINKB_SRC_COLORS);
break;
case 2:
memset(dctblock, 0, sizeof(*dctblock) * 64);
dctblock[0] = binkb_get_value(c, BINKB_SRC_INTRA_DC);
qp = binkb_get_value(c, BINKB_SRC_INTRA_Q);
read_dct_coeffs(gb, dctblock, bink_scan, (const int32_t (*)[64])binkb_intra_quant, qp);
c->binkdsp.idct_put(dst, stride, dctblock);
break;
case 3:
xoff = binkb_get_value(c, BINKB_SRC_X_OFF);
yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias;
ref = dst + xoff + yoff * stride;
if (ref < ref_start || ref + 8*stride > ref_end) {
av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n");
} else if (ref + 8*stride < dst || ref >= dst + 8*stride) {
c->hdsp.put_pixels_tab[1][0](dst, ref, stride, 8);
} else {
put_pixels8x8_overlapped(dst, ref, stride);
}
c->bdsp.clear_block(block);
v = binkb_get_value(c, BINKB_SRC_INTER_COEFS);
read_residue(gb, block, v);
c->binkdsp.add_pixels8(dst, block, stride);
break;
case 4:
xoff = binkb_get_value(c, BINKB_SRC_X_OFF);
yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias;
ref = dst + xoff + yoff * stride;
if (ref < ref_start || ref + 8 * stride > ref_end) {
av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n");
} else if (ref + 8*stride < dst || ref >= dst + 8*stride) {
c->hdsp.put_pixels_tab[1][0](dst, ref, stride, 8);
} else {
put_pixels8x8_overlapped(dst, ref, stride);
}
memset(dctblock, 0, sizeof(*dctblock) * 64);
dctblock[0] = binkb_get_value(c, BINKB_SRC_INTER_DC);
qp = binkb_get_value(c, BINKB_SRC_INTER_Q);
read_dct_coeffs(gb, dctblock, bink_scan, (const int32_t (*)[64])binkb_inter_quant, qp);
c->binkdsp.idct_add(dst, stride, dctblock);
break;
case 5:
v = binkb_get_value(c, BINKB_SRC_COLORS);
c->bdsp.fill_block_tab[1](dst, v, stride, 8);
break;
case 6:
for (i = 0; i < 2; i++)
col[i] = binkb_get_value(c, BINKB_SRC_COLORS);
for (i = 0; i < 8; i++) {
v = binkb_get_value(c, BINKB_SRC_PATTERN);
for (j = 0; j < 8; j++, v >>= 1)
dst[i*stride + j] = col[v & 1];
}
break;
case 7:
xoff = binkb_get_value(c, BINKB_SRC_X_OFF);
yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias;
ref = dst + xoff + yoff * stride;
if (ref < ref_start || ref + 8 * stride > ref_end) {
av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n");
} else if (ref + 8*stride < dst || ref >= dst + 8*stride) {
c->hdsp.put_pixels_tab[1][0](dst, ref, stride, 8);
} else {
put_pixels8x8_overlapped(dst, ref, stride);
}
break;
case 8:
for (i = 0; i < 8; i++)
memcpy(dst + i*stride, c->bundle[BINKB_SRC_COLORS].cur_ptr + i*8, 8);
c->bundle[BINKB_SRC_COLORS].cur_ptr += 64;
break;
default:
av_log(c->avctx, AV_LOG_ERROR, "Unknown block type %d\n", blk);
return AVERROR_INVALIDDATA;
}
}
}
if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary
skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F));
return 0;
}
static int bink_put_pixels(BinkContext *c,
uint8_t *dst, uint8_t *prev, int stride,
uint8_t *ref_start,
uint8_t *ref_end)
{
int xoff = get_value(c, BINK_SRC_X_OFF);
int yoff = get_value(c, BINK_SRC_Y_OFF);
uint8_t *ref = prev + xoff + yoff * stride;
if (ref < ref_start || ref > ref_end) {
av_log(c->avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
xoff, yoff);
return AVERROR_INVALIDDATA;
}
c->hdsp.put_pixels_tab[1][0](dst, ref, stride, 8);
return 0;
}
static int bink_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb,
int plane_idx, int is_chroma)
{
int blk, ret;
int i, j, bx, by;
uint8_t *dst, *prev, *ref_start, *ref_end;
int v, col[2];
const uint8_t *scan;
LOCAL_ALIGNED_16(int16_t, block, [64]);
LOCAL_ALIGNED_16(uint8_t, ublock, [64]);
LOCAL_ALIGNED_16(int32_t, dctblock, [64]);
int coordmap[64];
const int stride = frame->linesize[plane_idx];
int bw = is_chroma ? (c->avctx->width + 15) >> 4 : (c->avctx->width + 7) >> 3;
int bh = is_chroma ? (c->avctx->height + 15) >> 4 : (c->avctx->height + 7) >> 3;
int width = c->avctx->width >> is_chroma;
init_lengths(c, FFMAX(width, 8), bw);
for (i = 0; i < BINK_NB_SRC; i++)
read_bundle(gb, c, i);
ref_start = c->last->data[plane_idx] ? c->last->data[plane_idx]
: frame->data[plane_idx];
ref_end = ref_start
+ (bw - 1 + c->last->linesize[plane_idx] * (bh - 1)) * 8;
for (i = 0; i < 64; i++)
coordmap[i] = (i & 7) + (i >> 3) * stride;
for (by = 0; by < bh; by++) {
if ((ret = read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_BLOCK_TYPES])) < 0)
return ret;
if ((ret = read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_SUB_BLOCK_TYPES])) < 0)
return ret;
if ((ret = read_colors(gb, &c->bundle[BINK_SRC_COLORS], c)) < 0)
return ret;
if ((ret = read_patterns(c->avctx, gb, &c->bundle[BINK_SRC_PATTERN])) < 0)
return ret;
if ((ret = read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_X_OFF])) < 0)
return ret;
if ((ret = read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_Y_OFF])) < 0)
return ret;
if ((ret = read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTRA_DC], DC_START_BITS, 0)) < 0)
return ret;
if ((ret = read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTER_DC], DC_START_BITS, 1)) < 0)
return ret;
if ((ret = read_runs(c->avctx, gb, &c->bundle[BINK_SRC_RUN])) < 0)
return ret;
if (by == bh)
break;
dst = frame->data[plane_idx] + 8*by*stride;
prev = (c->last->data[plane_idx] ? c->last->data[plane_idx]
: frame->data[plane_idx]) + 8*by*stride;
for (bx = 0; bx < bw; bx++, dst += 8, prev += 8) {
blk = get_value(c, BINK_SRC_BLOCK_TYPES);
// 16x16 block type on odd line means part of the already decoded block, so skip it
if ((by & 1) && blk == SCALED_BLOCK) {
bx++;
dst += 8;
prev += 8;
continue;
}
switch (blk) {
case SKIP_BLOCK:
c->hdsp.put_pixels_tab[1][0](dst, prev, stride, 8);
break;
case SCALED_BLOCK:
blk = get_value(c, BINK_SRC_SUB_BLOCK_TYPES);
switch (blk) {
case RUN_BLOCK:
scan = bink_patterns[get_bits(gb, 4)];
i = 0;
do {
int run = get_value(c, BINK_SRC_RUN) + 1;
i += run;
if (i > 64) {
av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
return AVERROR_INVALIDDATA;
}
if (get_bits1(gb)) {
v = get_value(c, BINK_SRC_COLORS);
for (j = 0; j < run; j++)
ublock[*scan++] = v;
} else {
for (j = 0; j < run; j++)
ublock[*scan++] = get_value(c, BINK_SRC_COLORS);
}
} while (i < 63);
if (i == 63)
ublock[*scan++] = get_value(c, BINK_SRC_COLORS);
break;
case INTRA_BLOCK:
memset(dctblock, 0, sizeof(*dctblock) * 64);
dctblock[0] = get_value(c, BINK_SRC_INTRA_DC);
read_dct_coeffs(gb, dctblock, bink_scan, bink_intra_quant, -1);
c->binkdsp.idct_put(ublock, 8, dctblock);
break;
case FILL_BLOCK:
v = get_value(c, BINK_SRC_COLORS);
c->bdsp.fill_block_tab[0](dst, v, stride, 16);
break;
case PATTERN_BLOCK:
for (i = 0; i < 2; i++)
col[i] = get_value(c, BINK_SRC_COLORS);
for (j = 0; j < 8; j++) {
v = get_value(c, BINK_SRC_PATTERN);
for (i = 0; i < 8; i++, v >>= 1)
ublock[i + j*8] = col[v & 1];
}
break;
case RAW_BLOCK:
for (j = 0; j < 8; j++)
for (i = 0; i < 8; i++)
ublock[i + j*8] = get_value(c, BINK_SRC_COLORS);
break;
default:
av_log(c->avctx, AV_LOG_ERROR, "Incorrect 16x16 block type %d\n", blk);
return AVERROR_INVALIDDATA;
}
if (blk != FILL_BLOCK)
c->binkdsp.scale_block(ublock, dst, stride);
bx++;
dst += 8;
prev += 8;
break;
case MOTION_BLOCK:
ret = bink_put_pixels(c, dst, prev, stride,
ref_start, ref_end);
if (ret < 0)
return ret;
break;
case RUN_BLOCK:
scan = bink_patterns[get_bits(gb, 4)];
i = 0;
do {
int run = get_value(c, BINK_SRC_RUN) + 1;
i += run;
if (i > 64) {
av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
return AVERROR_INVALIDDATA;
}
if (get_bits1(gb)) {
v = get_value(c, BINK_SRC_COLORS);
for (j = 0; j < run; j++)
dst[coordmap[*scan++]] = v;
} else {
for (j = 0; j < run; j++)
dst[coordmap[*scan++]] = get_value(c, BINK_SRC_COLORS);
}
} while (i < 63);
if (i == 63)
dst[coordmap[*scan++]] = get_value(c, BINK_SRC_COLORS);
break;
case RESIDUE_BLOCK:
ret = bink_put_pixels(c, dst, prev, stride,
ref_start, ref_end);
if (ret < 0)
return ret;
c->bdsp.clear_block(block);
v = get_bits(gb, 7);
read_residue(gb, block, v);
c->binkdsp.add_pixels8(dst, block, stride);
break;
case INTRA_BLOCK:
memset(dctblock, 0, sizeof(*dctblock) * 64);
dctblock[0] = get_value(c, BINK_SRC_INTRA_DC);
read_dct_coeffs(gb, dctblock, bink_scan, bink_intra_quant, -1);
c->binkdsp.idct_put(dst, stride, dctblock);
break;
case FILL_BLOCK:
v = get_value(c, BINK_SRC_COLORS);
c->bdsp.fill_block_tab[1](dst, v, stride, 8);
break;
case INTER_BLOCK:
ret = bink_put_pixels(c, dst, prev, stride,
ref_start, ref_end);
if (ret < 0)
return ret;
memset(dctblock, 0, sizeof(*dctblock) * 64);
dctblock[0] = get_value(c, BINK_SRC_INTER_DC);
read_dct_coeffs(gb, dctblock, bink_scan, bink_inter_quant, -1);
c->binkdsp.idct_add(dst, stride, dctblock);
break;
case PATTERN_BLOCK:
for (i = 0; i < 2; i++)
col[i] = get_value(c, BINK_SRC_COLORS);
for (i = 0; i < 8; i++) {
v = get_value(c, BINK_SRC_PATTERN);
for (j = 0; j < 8; j++, v >>= 1)
dst[i*stride + j] = col[v & 1];
}
break;
case RAW_BLOCK:
for (i = 0; i < 8; i++)
memcpy(dst + i*stride, c->bundle[BINK_SRC_COLORS].cur_ptr + i*8, 8);
c->bundle[BINK_SRC_COLORS].cur_ptr += 64;
break;
default:
av_log(c->avctx, AV_LOG_ERROR, "Unknown block type %d\n", blk);
return AVERROR_INVALIDDATA;
}
}
}
if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary
skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F));
return 0;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *pkt)
{
BinkContext * const c = avctx->priv_data;
AVFrame *frame = data;
GetBitContext gb;
int plane, plane_idx, ret;
int bits_count = pkt->size << 3;
if (c->version > 'b') {
if ((ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF)) < 0)
return ret;
} else {
if ((ret = ff_reget_buffer(avctx, c->last)) < 0)
return ret;
if ((ret = av_frame_ref(frame, c->last)) < 0)
return ret;
}
init_get_bits(&gb, pkt->data, bits_count);
if (c->has_alpha) {
if (c->version >= 'i')
skip_bits_long(&gb, 32);
if ((ret = bink_decode_plane(c, frame, &gb, 3, 0)) < 0)
return ret;
}
if (c->version >= 'i')
skip_bits_long(&gb, 32);
c->frame_num++;
for (plane = 0; plane < 3; plane++) {
plane_idx = (!plane || !c->swap_planes) ? plane : (plane ^ 3);
if (c->version > 'b') {
if ((ret = bink_decode_plane(c, frame, &gb, plane_idx, !!plane)) < 0)
return ret;
} else {
if ((ret = binkb_decode_plane(c, frame, &gb, plane_idx,
c->frame_num == 1, !!plane)) < 0)
return ret;
}
if (get_bits_count(&gb) >= bits_count)
break;
}
emms_c();
if (c->version > 'b') {
av_frame_unref(c->last);
if ((ret = av_frame_ref(c->last, frame)) < 0)
return ret;
}
*got_frame = 1;
/* always report that the buffer was completely consumed */
return pkt->size;
}
/**
* Calculate quantization tables for version b
*/
static av_cold void binkb_calc_quant(void)
{
uint8_t inv_bink_scan[64];
static const int s[64]={
1073741824,1489322693,1402911301,1262586814,1073741824, 843633538, 581104888, 296244703,
1489322693,2065749918,1945893874,1751258219,1489322693,1170153332, 806015634, 410903207,
1402911301,1945893874,1832991949,1649649171,1402911301,1102260336, 759250125, 387062357,
1262586814,1751258219,1649649171,1484645031,1262586814, 992008094, 683307060, 348346918,
1073741824,1489322693,1402911301,1262586814,1073741824, 843633538, 581104888, 296244703,
843633538,1170153332,1102260336, 992008094, 843633538, 662838617, 456571181, 232757969,
581104888, 806015634, 759250125, 683307060, 581104888, 456571181, 314491699, 160326478,
296244703, 410903207, 387062357, 348346918, 296244703, 232757969, 160326478, 81733730,
};
int i, j;
#define C (1LL<<30)
for (i = 0; i < 64; i++)
inv_bink_scan[bink_scan[i]] = i;
for (j = 0; j < 16; j++) {
for (i = 0; i < 64; i++) {
int k = inv_bink_scan[i];
binkb_intra_quant[j][k] = binkb_intra_seed[i] * (int64_t)s[i] *
binkb_num[j]/(binkb_den[j] * (C>>12));
binkb_inter_quant[j][k] = binkb_inter_seed[i] * (int64_t)s[i] *
binkb_num[j]/(binkb_den[j] * (C>>12));
}
}
}
static av_cold int decode_init(AVCodecContext *avctx)
{
BinkContext * const c = avctx->priv_data;
static VLC_TYPE table[16 * 128][2];
static int binkb_initialised = 0;
int i, ret;
int flags;
c->version = avctx->codec_tag >> 24;
if (avctx->extradata_size < 4) {
av_log(avctx, AV_LOG_ERROR, "Extradata missing or too short\n");
return AVERROR_INVALIDDATA;
}
flags = AV_RL32(avctx->extradata);
c->has_alpha = flags & BINK_FLAG_ALPHA;
c->swap_planes = c->version >= 'h';
if (!bink_trees[15].table) {
for (i = 0; i < 16; i++) {
const int maxbits = bink_tree_lens[i][15];
bink_trees[i].table = table + i*128;
bink_trees[i].table_allocated = 1 << maxbits;
init_vlc(&bink_trees[i], maxbits, 16,
bink_tree_lens[i], 1, 1,
bink_tree_bits[i], 1, 1, INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
}
}
c->avctx = avctx;
c->last = av_frame_alloc();
if (!c->last)
return AVERROR(ENOMEM);
if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
return ret;
avctx->pix_fmt = c->has_alpha ? AV_PIX_FMT_YUVA420P : AV_PIX_FMT_YUV420P;
ff_blockdsp_init(&c->bdsp, avctx);
ff_hpeldsp_init(&c->hdsp, avctx->flags);
ff_binkdsp_init(&c->binkdsp);
if ((ret = init_bundles(c)) < 0) {
free_bundles(c);
return ret;
}
if (c->version == 'b') {
if (!binkb_initialised) {
binkb_calc_quant();
binkb_initialised = 1;
}
}
return 0;
}
static av_cold int decode_end(AVCodecContext *avctx)
{
BinkContext * const c = avctx->priv_data;
av_frame_free(&c->last);
free_bundles(c);
return 0;
}
static void flush(AVCodecContext *avctx)
{
BinkContext * const c = avctx->priv_data;
c->frame_num = 0;
}
AVCodec ff_bink_decoder = {
.name = "binkvideo",
.long_name = NULL_IF_CONFIG_SMALL("Bink video"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_BINKVIDEO,
.priv_data_size = sizeof(BinkContext),
.init = decode_init,
.close = decode_end,
.decode = decode_frame,
.flush = flush,
.capabilities = AV_CODEC_CAP_DR1,
};
|