Libav 0.7.1
libavcodec/bink.c
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00001 /*
00002  * Bink video decoder
00003  * Copyright (c) 2009 Konstantin Shishkov
00004  * Copyright (C) 2011 Peter Ross <pross@xvid.org>
00005  *
00006  * This file is part of Libav.
00007  *
00008  * Libav is free software; you can redistribute it and/or
00009  * modify it under the terms of the GNU Lesser General Public
00010  * License as published by the Free Software Foundation; either
00011  * version 2.1 of the License, or (at your option) any later version.
00012  *
00013  * Libav is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016  * Lesser General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU Lesser General Public
00019  * License along with Libav; if not, write to the Free Software
00020  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  */
00022 
00023 #include "libavutil/imgutils.h"
00024 #include "avcodec.h"
00025 #include "dsputil.h"
00026 #include "binkdata.h"
00027 #include "mathops.h"
00028 
00029 #define ALT_BITSTREAM_READER_LE
00030 #include "get_bits.h"
00031 
00032 #define BINK_FLAG_ALPHA 0x00100000
00033 #define BINK_FLAG_GRAY  0x00020000
00034 
00035 static VLC bink_trees[16];
00036 
00040 enum OldSources {
00041     BINKB_SRC_BLOCK_TYPES = 0, 
00042     BINKB_SRC_COLORS,          
00043     BINKB_SRC_PATTERN,         
00044     BINKB_SRC_X_OFF,           
00045     BINKB_SRC_Y_OFF,           
00046     BINKB_SRC_INTRA_DC,        
00047     BINKB_SRC_INTER_DC,        
00048     BINKB_SRC_INTRA_Q,         
00049     BINKB_SRC_INTER_Q,         
00050     BINKB_SRC_INTER_COEFS,     
00051 
00052     BINKB_NB_SRC
00053 };
00054 
00055 static const int binkb_bundle_sizes[BINKB_NB_SRC] = {
00056     4, 8, 8, 5, 5, 11, 11, 4, 4, 7
00057 };
00058 
00059 static const int binkb_bundle_signed[BINKB_NB_SRC] = {
00060     0, 0, 0, 1, 1, 0, 1, 0, 0, 0
00061 };
00062 
00063 static uint32_t binkb_intra_quant[16][64];
00064 static uint32_t binkb_inter_quant[16][64];
00065 
00069 enum Sources {
00070     BINK_SRC_BLOCK_TYPES = 0, 
00071     BINK_SRC_SUB_BLOCK_TYPES, 
00072     BINK_SRC_COLORS,          
00073     BINK_SRC_PATTERN,         
00074     BINK_SRC_X_OFF,           
00075     BINK_SRC_Y_OFF,           
00076     BINK_SRC_INTRA_DC,        
00077     BINK_SRC_INTER_DC,        
00078     BINK_SRC_RUN,             
00079 
00080     BINK_NB_SRC
00081 };
00082 
00086 typedef struct Tree {
00087     int     vlc_num;  
00088     uint8_t syms[16]; 
00089 } Tree;
00090 
00091 #define GET_HUFF(gb, tree)  (tree).syms[get_vlc2(gb, bink_trees[(tree).vlc_num].table,\
00092                                                  bink_trees[(tree).vlc_num].bits, 1)]
00093 
00097 typedef struct Bundle {
00098     int     len;       
00099     Tree    tree;      
00100     uint8_t *data;     
00101     uint8_t *data_end; 
00102     uint8_t *cur_dec;  
00103     uint8_t *cur_ptr;  
00104 } Bundle;
00105 
00106 /*
00107  * Decoder context
00108  */
00109 typedef struct BinkContext {
00110     AVCodecContext *avctx;
00111     DSPContext     dsp;
00112     AVFrame        pic, last;
00113     int            version;              
00114     int            has_alpha;
00115     int            swap_planes;
00116     ScanTable      scantable;            
00117 
00118     Bundle         bundle[BINKB_NB_SRC]; 
00119     Tree           col_high[16];         
00120     int            col_lastval;          
00121 } BinkContext;
00122 
00126 enum BlockTypes {
00127     SKIP_BLOCK = 0, 
00128     SCALED_BLOCK,   
00129     MOTION_BLOCK,   
00130     RUN_BLOCK,      
00131     RESIDUE_BLOCK,  
00132     INTRA_BLOCK,    
00133     FILL_BLOCK,     
00134     INTER_BLOCK,    
00135     PATTERN_BLOCK,  
00136     RAW_BLOCK,      
00137 };
00138 
00146 static void init_lengths(BinkContext *c, int width, int bw)
00147 {
00148     c->bundle[BINK_SRC_BLOCK_TYPES].len = av_log2((width >> 3) + 511) + 1;
00149 
00150     c->bundle[BINK_SRC_SUB_BLOCK_TYPES].len = av_log2((width >> 4) + 511) + 1;
00151 
00152     c->bundle[BINK_SRC_COLORS].len = av_log2(bw*64 + 511) + 1;
00153 
00154     c->bundle[BINK_SRC_INTRA_DC].len =
00155     c->bundle[BINK_SRC_INTER_DC].len =
00156     c->bundle[BINK_SRC_X_OFF].len =
00157     c->bundle[BINK_SRC_Y_OFF].len = av_log2((width >> 3) + 511) + 1;
00158 
00159     c->bundle[BINK_SRC_PATTERN].len = av_log2((bw << 3) + 511) + 1;
00160 
00161     c->bundle[BINK_SRC_RUN].len = av_log2(bw*48 + 511) + 1;
00162 }
00163 
00169 static av_cold void init_bundles(BinkContext *c)
00170 {
00171     int bw, bh, blocks;
00172     int i;
00173 
00174     bw = (c->avctx->width  + 7) >> 3;
00175     bh = (c->avctx->height + 7) >> 3;
00176     blocks = bw * bh;
00177 
00178     for (i = 0; i < BINKB_NB_SRC; i++) {
00179         c->bundle[i].data = av_malloc(blocks * 64);
00180         c->bundle[i].data_end = c->bundle[i].data + blocks * 64;
00181     }
00182 }
00183 
00189 static av_cold void free_bundles(BinkContext *c)
00190 {
00191     int i;
00192     for (i = 0; i < BINKB_NB_SRC; i++)
00193         av_freep(&c->bundle[i].data);
00194 }
00195 
00204 static void merge(GetBitContext *gb, uint8_t *dst, uint8_t *src, int size)
00205 {
00206     uint8_t *src2 = src + size;
00207     int size2 = size;
00208 
00209     do {
00210         if (!get_bits1(gb)) {
00211             *dst++ = *src++;
00212             size--;
00213         } else {
00214             *dst++ = *src2++;
00215             size2--;
00216         }
00217     } while (size && size2);
00218 
00219     while (size--)
00220         *dst++ = *src++;
00221     while (size2--)
00222         *dst++ = *src2++;
00223 }
00224 
00231 static void read_tree(GetBitContext *gb, Tree *tree)
00232 {
00233     uint8_t tmp1[16], tmp2[16], *in = tmp1, *out = tmp2;
00234     int i, t, len;
00235 
00236     tree->vlc_num = get_bits(gb, 4);
00237     if (!tree->vlc_num) {
00238         for (i = 0; i < 16; i++)
00239             tree->syms[i] = i;
00240         return;
00241     }
00242     if (get_bits1(gb)) {
00243         len = get_bits(gb, 3);
00244         memset(tmp1, 0, sizeof(tmp1));
00245         for (i = 0; i <= len; i++) {
00246             tree->syms[i] = get_bits(gb, 4);
00247             tmp1[tree->syms[i]] = 1;
00248         }
00249         for (i = 0; i < 16; i++)
00250             if (!tmp1[i])
00251                 tree->syms[++len] = i;
00252     } else {
00253         len = get_bits(gb, 2);
00254         for (i = 0; i < 16; i++)
00255             in[i] = i;
00256         for (i = 0; i <= len; i++) {
00257             int size = 1 << i;
00258             for (t = 0; t < 16; t += size << 1)
00259                 merge(gb, out + t, in + t, size);
00260             FFSWAP(uint8_t*, in, out);
00261         }
00262         memcpy(tree->syms, in, 16);
00263     }
00264 }
00265 
00273 static void read_bundle(GetBitContext *gb, BinkContext *c, int bundle_num)
00274 {
00275     int i;
00276 
00277     if (bundle_num == BINK_SRC_COLORS) {
00278         for (i = 0; i < 16; i++)
00279             read_tree(gb, &c->col_high[i]);
00280         c->col_lastval = 0;
00281     }
00282     if (bundle_num != BINK_SRC_INTRA_DC && bundle_num != BINK_SRC_INTER_DC)
00283         read_tree(gb, &c->bundle[bundle_num].tree);
00284     c->bundle[bundle_num].cur_dec =
00285     c->bundle[bundle_num].cur_ptr = c->bundle[bundle_num].data;
00286 }
00287 
00295 #define CHECK_READ_VAL(gb, b, t) \
00296     if (!b->cur_dec || (b->cur_dec > b->cur_ptr)) \
00297         return 0; \
00298     t = get_bits(gb, b->len); \
00299     if (!t) { \
00300         b->cur_dec = NULL; \
00301         return 0; \
00302     } \
00303 
00304 static int read_runs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
00305 {
00306     int t, v;
00307     const uint8_t *dec_end;
00308 
00309     CHECK_READ_VAL(gb, b, t);
00310     dec_end = b->cur_dec + t;
00311     if (dec_end > b->data_end) {
00312         av_log(avctx, AV_LOG_ERROR, "Run value went out of bounds\n");
00313         return -1;
00314     }
00315     if (get_bits1(gb)) {
00316         v = get_bits(gb, 4);
00317         memset(b->cur_dec, v, t);
00318         b->cur_dec += t;
00319     } else {
00320         while (b->cur_dec < dec_end)
00321             *b->cur_dec++ = GET_HUFF(gb, b->tree);
00322     }
00323     return 0;
00324 }
00325 
00326 static int read_motion_values(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
00327 {
00328     int t, sign, v;
00329     const uint8_t *dec_end;
00330 
00331     CHECK_READ_VAL(gb, b, t);
00332     dec_end = b->cur_dec + t;
00333     if (dec_end > b->data_end) {
00334         av_log(avctx, AV_LOG_ERROR, "Too many motion values\n");
00335         return -1;
00336     }
00337     if (get_bits1(gb)) {
00338         v = get_bits(gb, 4);
00339         if (v) {
00340             sign = -get_bits1(gb);
00341             v = (v ^ sign) - sign;
00342         }
00343         memset(b->cur_dec, v, t);
00344         b->cur_dec += t;
00345     } else {
00346         do {
00347             v = GET_HUFF(gb, b->tree);
00348             if (v) {
00349                 sign = -get_bits1(gb);
00350                 v = (v ^ sign) - sign;
00351             }
00352             *b->cur_dec++ = v;
00353         } while (b->cur_dec < dec_end);
00354     }
00355     return 0;
00356 }
00357 
00358 static const uint8_t bink_rlelens[4] = { 4, 8, 12, 32 };
00359 
00360 static int read_block_types(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
00361 {
00362     int t, v;
00363     int last = 0;
00364     const uint8_t *dec_end;
00365 
00366     CHECK_READ_VAL(gb, b, t);
00367     dec_end = b->cur_dec + t;
00368     if (dec_end > b->data_end) {
00369         av_log(avctx, AV_LOG_ERROR, "Too many block type values\n");
00370         return -1;
00371     }
00372     if (get_bits1(gb)) {
00373         v = get_bits(gb, 4);
00374         memset(b->cur_dec, v, t);
00375         b->cur_dec += t;
00376     } else {
00377         do {
00378             v = GET_HUFF(gb, b->tree);
00379             if (v < 12) {
00380                 last = v;
00381                 *b->cur_dec++ = v;
00382             } else {
00383                 int run = bink_rlelens[v - 12];
00384 
00385                 memset(b->cur_dec, last, run);
00386                 b->cur_dec += run;
00387             }
00388         } while (b->cur_dec < dec_end);
00389     }
00390     return 0;
00391 }
00392 
00393 static int read_patterns(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
00394 {
00395     int t, v;
00396     const uint8_t *dec_end;
00397 
00398     CHECK_READ_VAL(gb, b, t);
00399     dec_end = b->cur_dec + t;
00400     if (dec_end > b->data_end) {
00401         av_log(avctx, AV_LOG_ERROR, "Too many pattern values\n");
00402         return -1;
00403     }
00404     while (b->cur_dec < dec_end) {
00405         v  = GET_HUFF(gb, b->tree);
00406         v |= GET_HUFF(gb, b->tree) << 4;
00407         *b->cur_dec++ = v;
00408     }
00409 
00410     return 0;
00411 }
00412 
00413 static int read_colors(GetBitContext *gb, Bundle *b, BinkContext *c)
00414 {
00415     int t, sign, v;
00416     const uint8_t *dec_end;
00417 
00418     CHECK_READ_VAL(gb, b, t);
00419     dec_end = b->cur_dec + t;
00420     if (dec_end > b->data_end) {
00421         av_log(c->avctx, AV_LOG_ERROR, "Too many color values\n");
00422         return -1;
00423     }
00424     if (get_bits1(gb)) {
00425         c->col_lastval = GET_HUFF(gb, c->col_high[c->col_lastval]);
00426         v = GET_HUFF(gb, b->tree);
00427         v = (c->col_lastval << 4) | v;
00428         if (c->version < 'i') {
00429             sign = ((int8_t) v) >> 7;
00430             v = ((v & 0x7F) ^ sign) - sign;
00431             v += 0x80;
00432         }
00433         memset(b->cur_dec, v, t);
00434         b->cur_dec += t;
00435     } else {
00436         while (b->cur_dec < dec_end) {
00437             c->col_lastval = GET_HUFF(gb, c->col_high[c->col_lastval]);
00438             v = GET_HUFF(gb, b->tree);
00439             v = (c->col_lastval << 4) | v;
00440             if (c->version < 'i') {
00441                 sign = ((int8_t) v) >> 7;
00442                 v = ((v & 0x7F) ^ sign) - sign;
00443                 v += 0x80;
00444             }
00445             *b->cur_dec++ = v;
00446         }
00447     }
00448     return 0;
00449 }
00450 
00452 #define DC_START_BITS 11
00453 
00454 static int read_dcs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b,
00455                     int start_bits, int has_sign)
00456 {
00457     int i, j, len, len2, bsize, sign, v, v2;
00458     int16_t *dst = (int16_t*)b->cur_dec;
00459 
00460     CHECK_READ_VAL(gb, b, len);
00461     v = get_bits(gb, start_bits - has_sign);
00462     if (v && has_sign) {
00463         sign = -get_bits1(gb);
00464         v = (v ^ sign) - sign;
00465     }
00466     *dst++ = v;
00467     len--;
00468     for (i = 0; i < len; i += 8) {
00469         len2 = FFMIN(len - i, 8);
00470         bsize = get_bits(gb, 4);
00471         if (bsize) {
00472             for (j = 0; j < len2; j++) {
00473                 v2 = get_bits(gb, bsize);
00474                 if (v2) {
00475                     sign = -get_bits1(gb);
00476                     v2 = (v2 ^ sign) - sign;
00477                 }
00478                 v += v2;
00479                 *dst++ = v;
00480                 if (v < -32768 || v > 32767) {
00481                     av_log(avctx, AV_LOG_ERROR, "DC value went out of bounds: %d\n", v);
00482                     return -1;
00483                 }
00484             }
00485         } else {
00486             for (j = 0; j < len2; j++)
00487                 *dst++ = v;
00488         }
00489     }
00490 
00491     b->cur_dec = (uint8_t*)dst;
00492     return 0;
00493 }
00494 
00501 static inline int get_value(BinkContext *c, int bundle)
00502 {
00503     int ret;
00504 
00505     if (bundle < BINK_SRC_X_OFF || bundle == BINK_SRC_RUN)
00506         return *c->bundle[bundle].cur_ptr++;
00507     if (bundle == BINK_SRC_X_OFF || bundle == BINK_SRC_Y_OFF)
00508         return (int8_t)*c->bundle[bundle].cur_ptr++;
00509     ret = *(int16_t*)c->bundle[bundle].cur_ptr;
00510     c->bundle[bundle].cur_ptr += 2;
00511     return ret;
00512 }
00513 
00514 static void binkb_init_bundle(BinkContext *c, int bundle_num)
00515 {
00516     c->bundle[bundle_num].cur_dec =
00517     c->bundle[bundle_num].cur_ptr = c->bundle[bundle_num].data;
00518     c->bundle[bundle_num].len = 13;
00519 }
00520 
00521 static void binkb_init_bundles(BinkContext *c)
00522 {
00523     int i;
00524     for (i = 0; i < BINKB_NB_SRC; i++)
00525         binkb_init_bundle(c, i);
00526 }
00527 
00528 static int binkb_read_bundle(BinkContext *c, GetBitContext *gb, int bundle_num)
00529 {
00530     const int bits = binkb_bundle_sizes[bundle_num];
00531     const int mask = 1 << (bits - 1);
00532     const int issigned = binkb_bundle_signed[bundle_num];
00533     Bundle *b = &c->bundle[bundle_num];
00534     int i, len;
00535 
00536     CHECK_READ_VAL(gb, b, len);
00537     if (bits <= 8) {
00538         if (!issigned) {
00539             for (i = 0; i < len; i++)
00540                 *b->cur_dec++ = get_bits(gb, bits);
00541         } else {
00542             for (i = 0; i < len; i++)
00543                 *b->cur_dec++ = get_bits(gb, bits) - mask;
00544         }
00545     } else {
00546         int16_t *dst = (int16_t*)b->cur_dec;
00547 
00548         if (!issigned) {
00549             for (i = 0; i < len; i++)
00550                 *dst++ = get_bits(gb, bits);
00551         } else {
00552             for (i = 0; i < len; i++)
00553                 *dst++ = get_bits(gb, bits) - mask;
00554         }
00555         b->cur_dec = (uint8_t*)dst;
00556     }
00557     return 0;
00558 }
00559 
00560 static inline int binkb_get_value(BinkContext *c, int bundle_num)
00561 {
00562     int16_t ret;
00563     const int bits = binkb_bundle_sizes[bundle_num];
00564 
00565     if (bits <= 8) {
00566         int val = *c->bundle[bundle_num].cur_ptr++;
00567         return binkb_bundle_signed[bundle_num] ? (int8_t)val : val;
00568     }
00569     ret = *(int16_t*)c->bundle[bundle_num].cur_ptr;
00570     c->bundle[bundle_num].cur_ptr += 2;
00571     return ret;
00572 }
00573 
00583 static int read_dct_coeffs(GetBitContext *gb, DCTELEM block[64], const uint8_t *scan,
00584                            const uint32_t quant_matrices[16][64], int q)
00585 {
00586     int coef_list[128];
00587     int mode_list[128];
00588     int i, t, mask, bits, ccoef, mode, sign;
00589     int list_start = 64, list_end = 64, list_pos;
00590     int coef_count = 0;
00591     int coef_idx[64];
00592     int quant_idx;
00593     const uint32_t *quant;
00594 
00595     coef_list[list_end] = 4;  mode_list[list_end++] = 0;
00596     coef_list[list_end] = 24; mode_list[list_end++] = 0;
00597     coef_list[list_end] = 44; mode_list[list_end++] = 0;
00598     coef_list[list_end] = 1;  mode_list[list_end++] = 3;
00599     coef_list[list_end] = 2;  mode_list[list_end++] = 3;
00600     coef_list[list_end] = 3;  mode_list[list_end++] = 3;
00601 
00602     bits = get_bits(gb, 4) - 1;
00603     for (mask = 1 << bits; bits >= 0; mask >>= 1, bits--) {
00604         list_pos = list_start;
00605         while (list_pos < list_end) {
00606             if (!(mode_list[list_pos] | coef_list[list_pos]) || !get_bits1(gb)) {
00607                 list_pos++;
00608                 continue;
00609             }
00610             ccoef = coef_list[list_pos];
00611             mode  = mode_list[list_pos];
00612             switch (mode) {
00613             case 0:
00614                 coef_list[list_pos] = ccoef + 4;
00615                 mode_list[list_pos] = 1;
00616             case 2:
00617                 if (mode == 2) {
00618                     coef_list[list_pos]   = 0;
00619                     mode_list[list_pos++] = 0;
00620                 }
00621                 for (i = 0; i < 4; i++, ccoef++) {
00622                     if (get_bits1(gb)) {
00623                         coef_list[--list_start] = ccoef;
00624                         mode_list[  list_start] = 3;
00625                     } else {
00626                         int t;
00627                         if (!bits) {
00628                             t = 1 - (get_bits1(gb) << 1);
00629                         } else {
00630                             t = get_bits(gb, bits) | mask;
00631                             sign = -get_bits1(gb);
00632                             t = (t ^ sign) - sign;
00633                         }
00634                         block[scan[ccoef]] = t;
00635                         coef_idx[coef_count++] = ccoef;
00636                     }
00637                 }
00638                 break;
00639             case 1:
00640                 mode_list[list_pos] = 2;
00641                 for (i = 0; i < 3; i++) {
00642                     ccoef += 4;
00643                     coef_list[list_end]   = ccoef;
00644                     mode_list[list_end++] = 2;
00645                 }
00646                 break;
00647             case 3:
00648                 if (!bits) {
00649                     t = 1 - (get_bits1(gb) << 1);
00650                 } else {
00651                     t = get_bits(gb, bits) | mask;
00652                     sign = -get_bits1(gb);
00653                     t = (t ^ sign) - sign;
00654                 }
00655                 block[scan[ccoef]] = t;
00656                 coef_idx[coef_count++] = ccoef;
00657                 coef_list[list_pos]   = 0;
00658                 mode_list[list_pos++] = 0;
00659                 break;
00660             }
00661         }
00662     }
00663 
00664     if (q == -1) {
00665         quant_idx = get_bits(gb, 4);
00666     } else {
00667         quant_idx = q;
00668     }
00669 
00670     quant = quant_matrices[quant_idx];
00671 
00672     block[0] = (block[0] * quant[0]) >> 11;
00673     for (i = 0; i < coef_count; i++) {
00674         int idx = coef_idx[i];
00675         block[scan[idx]] = (block[scan[idx]] * quant[idx]) >> 11;
00676     }
00677 
00678     return 0;
00679 }
00680 
00689 static int read_residue(GetBitContext *gb, DCTELEM block[64], int masks_count)
00690 {
00691     int coef_list[128];
00692     int mode_list[128];
00693     int i, sign, mask, ccoef, mode;
00694     int list_start = 64, list_end = 64, list_pos;
00695     int nz_coeff[64];
00696     int nz_coeff_count = 0;
00697 
00698     coef_list[list_end] =  4; mode_list[list_end++] = 0;
00699     coef_list[list_end] = 24; mode_list[list_end++] = 0;
00700     coef_list[list_end] = 44; mode_list[list_end++] = 0;
00701     coef_list[list_end] =  0; mode_list[list_end++] = 2;
00702 
00703     for (mask = 1 << get_bits(gb, 3); mask; mask >>= 1) {
00704         for (i = 0; i < nz_coeff_count; i++) {
00705             if (!get_bits1(gb))
00706                 continue;
00707             if (block[nz_coeff[i]] < 0)
00708                 block[nz_coeff[i]] -= mask;
00709             else
00710                 block[nz_coeff[i]] += mask;
00711             masks_count--;
00712             if (masks_count < 0)
00713                 return 0;
00714         }
00715         list_pos = list_start;
00716         while (list_pos < list_end) {
00717             if (!(coef_list[list_pos] | mode_list[list_pos]) || !get_bits1(gb)) {
00718                 list_pos++;
00719                 continue;
00720             }
00721             ccoef = coef_list[list_pos];
00722             mode  = mode_list[list_pos];
00723             switch (mode) {
00724             case 0:
00725                 coef_list[list_pos] = ccoef + 4;
00726                 mode_list[list_pos] = 1;
00727             case 2:
00728                 if (mode == 2) {
00729                     coef_list[list_pos]   = 0;
00730                     mode_list[list_pos++] = 0;
00731                 }
00732                 for (i = 0; i < 4; i++, ccoef++) {
00733                     if (get_bits1(gb)) {
00734                         coef_list[--list_start] = ccoef;
00735                         mode_list[  list_start] = 3;
00736                     } else {
00737                         nz_coeff[nz_coeff_count++] = bink_scan[ccoef];
00738                         sign = -get_bits1(gb);
00739                         block[bink_scan[ccoef]] = (mask ^ sign) - sign;
00740                         masks_count--;
00741                         if (masks_count < 0)
00742                             return 0;
00743                     }
00744                 }
00745                 break;
00746             case 1:
00747                 mode_list[list_pos] = 2;
00748                 for (i = 0; i < 3; i++) {
00749                     ccoef += 4;
00750                     coef_list[list_end]   = ccoef;
00751                     mode_list[list_end++] = 2;
00752                 }
00753                 break;
00754             case 3:
00755                 nz_coeff[nz_coeff_count++] = bink_scan[ccoef];
00756                 sign = -get_bits1(gb);
00757                 block[bink_scan[ccoef]] = (mask ^ sign) - sign;
00758                 coef_list[list_pos]   = 0;
00759                 mode_list[list_pos++] = 0;
00760                 masks_count--;
00761                 if (masks_count < 0)
00762                     return 0;
00763                 break;
00764             }
00765         }
00766     }
00767 
00768     return 0;
00769 }
00770 
00774 static inline void put_pixels8x8_overlapped(uint8_t *dst, uint8_t *src, int stride)
00775 {
00776     uint8_t tmp[64];
00777     int i;
00778     for (i = 0; i < 8; i++)
00779         memcpy(tmp + i*8, src + i*stride, 8);
00780     for (i = 0; i < 8; i++)
00781         memcpy(dst + i*stride, tmp + i*8, 8);
00782 }
00783 
00784 static int binkb_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx,
00785                               int is_key, int is_chroma)
00786 {
00787     int blk;
00788     int i, j, bx, by;
00789     uint8_t *dst, *ref, *ref_start, *ref_end;
00790     int v, col[2];
00791     const uint8_t *scan;
00792     int xoff, yoff;
00793     LOCAL_ALIGNED_16(DCTELEM, block, [64]);
00794     int coordmap[64];
00795     int ybias = is_key ? -15 : 0;
00796     int qp;
00797 
00798     const int stride = c->pic.linesize[plane_idx];
00799     int bw = is_chroma ? (c->avctx->width  + 15) >> 4 : (c->avctx->width  + 7) >> 3;
00800     int bh = is_chroma ? (c->avctx->height + 15) >> 4 : (c->avctx->height + 7) >> 3;
00801 
00802     binkb_init_bundles(c);
00803     ref_start = c->pic.data[plane_idx];
00804     ref_end   = c->pic.data[plane_idx] + (bh * c->pic.linesize[plane_idx] + bw) * 8;
00805 
00806     for (i = 0; i < 64; i++)
00807         coordmap[i] = (i & 7) + (i >> 3) * stride;
00808 
00809     for (by = 0; by < bh; by++) {
00810         for (i = 0; i < BINKB_NB_SRC; i++) {
00811             if (binkb_read_bundle(c, gb, i) < 0)
00812                 return -1;
00813         }
00814 
00815         dst  = c->pic.data[plane_idx]  + 8*by*stride;
00816         for (bx = 0; bx < bw; bx++, dst += 8) {
00817             blk = binkb_get_value(c, BINKB_SRC_BLOCK_TYPES);
00818             switch (blk) {
00819             case 0:
00820                 break;
00821             case 1:
00822                 scan = bink_patterns[get_bits(gb, 4)];
00823                 i = 0;
00824                 do {
00825                     int mode, run;
00826 
00827                     mode = get_bits1(gb);
00828                     run = get_bits(gb, binkb_runbits[i]) + 1;
00829 
00830                     i += run;
00831                     if (i > 64) {
00832                         av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
00833                         return -1;
00834                     }
00835                     if (mode) {
00836                         v = binkb_get_value(c, BINKB_SRC_COLORS);
00837                         for (j = 0; j < run; j++)
00838                             dst[coordmap[*scan++]] = v;
00839                     } else {
00840                         for (j = 0; j < run; j++)
00841                             dst[coordmap[*scan++]] = binkb_get_value(c, BINKB_SRC_COLORS);
00842                     }
00843                 } while (i < 63);
00844                 if (i == 63)
00845                     dst[coordmap[*scan++]] = binkb_get_value(c, BINKB_SRC_COLORS);
00846                 break;
00847             case 2:
00848                 c->dsp.clear_block(block);
00849                 block[0] = binkb_get_value(c, BINKB_SRC_INTRA_DC);
00850                 qp = binkb_get_value(c, BINKB_SRC_INTRA_Q);
00851                 read_dct_coeffs(gb, block, c->scantable.permutated, binkb_intra_quant, qp);
00852                 c->dsp.idct_put(dst, stride, block);
00853                 break;
00854             case 3:
00855                 xoff = binkb_get_value(c, BINKB_SRC_X_OFF);
00856                 yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias;
00857                 ref = dst + xoff + yoff * stride;
00858                 if (ref < ref_start || ref + 8*stride > ref_end) {
00859                     av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n");
00860                 } else if (ref + 8*stride < dst || ref >= dst + 8*stride) {
00861                     c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
00862                 } else {
00863                     put_pixels8x8_overlapped(dst, ref, stride);
00864                 }
00865                 c->dsp.clear_block(block);
00866                 v = binkb_get_value(c, BINKB_SRC_INTER_COEFS);
00867                 read_residue(gb, block, v);
00868                 c->dsp.add_pixels8(dst, block, stride);
00869                 break;
00870             case 4:
00871                 xoff = binkb_get_value(c, BINKB_SRC_X_OFF);
00872                 yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias;
00873                 ref = dst + xoff + yoff * stride;
00874                 if (ref < ref_start || ref + 8 * stride > ref_end) {
00875                     av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n");
00876                 } else if (ref + 8*stride < dst || ref >= dst + 8*stride) {
00877                     c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
00878                 } else {
00879                     put_pixels8x8_overlapped(dst, ref, stride);
00880                 }
00881                 c->dsp.clear_block(block);
00882                 block[0] = binkb_get_value(c, BINKB_SRC_INTER_DC);
00883                 qp = binkb_get_value(c, BINKB_SRC_INTER_Q);
00884                 read_dct_coeffs(gb, block, c->scantable.permutated, binkb_inter_quant, qp);
00885                 c->dsp.idct_add(dst, stride, block);
00886                 break;
00887             case 5:
00888                 v = binkb_get_value(c, BINKB_SRC_COLORS);
00889                 c->dsp.fill_block_tab[1](dst, v, stride, 8);
00890                 break;
00891             case 6:
00892                 for (i = 0; i < 2; i++)
00893                     col[i] = binkb_get_value(c, BINKB_SRC_COLORS);
00894                 for (i = 0; i < 8; i++) {
00895                     v = binkb_get_value(c, BINKB_SRC_PATTERN);
00896                     for (j = 0; j < 8; j++, v >>= 1)
00897                         dst[i*stride + j] = col[v & 1];
00898                 }
00899                 break;
00900             case 7:
00901                 xoff = binkb_get_value(c, BINKB_SRC_X_OFF);
00902                 yoff = binkb_get_value(c, BINKB_SRC_Y_OFF) + ybias;
00903                 ref = dst + xoff + yoff * stride;
00904                 if (ref < ref_start || ref + 8 * stride > ref_end) {
00905                     av_log(c->avctx, AV_LOG_WARNING, "Reference block is out of bounds\n");
00906                 } else if (ref + 8*stride < dst || ref >= dst + 8*stride) {
00907                     c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
00908                 } else {
00909                     put_pixels8x8_overlapped(dst, ref, stride);
00910                 }
00911                 break;
00912             case 8:
00913                 for (i = 0; i < 8; i++)
00914                     memcpy(dst + i*stride, c->bundle[BINKB_SRC_COLORS].cur_ptr + i*8, 8);
00915                 c->bundle[BINKB_SRC_COLORS].cur_ptr += 64;
00916                 break;
00917             default:
00918                 av_log(c->avctx, AV_LOG_ERROR, "Unknown block type %d\n", blk);
00919                 return -1;
00920             }
00921         }
00922     }
00923     if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary
00924         skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F));
00925 
00926     return 0;
00927 }
00928 
00929 static int bink_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx,
00930                              int is_chroma)
00931 {
00932     int blk;
00933     int i, j, bx, by;
00934     uint8_t *dst, *prev, *ref, *ref_start, *ref_end;
00935     int v, col[2];
00936     const uint8_t *scan;
00937     int xoff, yoff;
00938     LOCAL_ALIGNED_16(DCTELEM, block, [64]);
00939     LOCAL_ALIGNED_16(uint8_t, ublock, [64]);
00940     int coordmap[64];
00941 
00942     const int stride = c->pic.linesize[plane_idx];
00943     int bw = is_chroma ? (c->avctx->width  + 15) >> 4 : (c->avctx->width  + 7) >> 3;
00944     int bh = is_chroma ? (c->avctx->height + 15) >> 4 : (c->avctx->height + 7) >> 3;
00945     int width = c->avctx->width >> is_chroma;
00946 
00947     init_lengths(c, FFMAX(width, 8), bw);
00948     for (i = 0; i < BINK_NB_SRC; i++)
00949         read_bundle(gb, c, i);
00950 
00951     ref_start = c->last.data[plane_idx];
00952     ref_end   = c->last.data[plane_idx]
00953                 + (bw - 1 + c->last.linesize[plane_idx] * (bh - 1)) * 8;
00954 
00955     for (i = 0; i < 64; i++)
00956         coordmap[i] = (i & 7) + (i >> 3) * stride;
00957 
00958     for (by = 0; by < bh; by++) {
00959         if (read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_BLOCK_TYPES]) < 0)
00960             return -1;
00961         if (read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_SUB_BLOCK_TYPES]) < 0)
00962             return -1;
00963         if (read_colors(gb, &c->bundle[BINK_SRC_COLORS], c) < 0)
00964             return -1;
00965         if (read_patterns(c->avctx, gb, &c->bundle[BINK_SRC_PATTERN]) < 0)
00966             return -1;
00967         if (read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_X_OFF]) < 0)
00968             return -1;
00969         if (read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_Y_OFF]) < 0)
00970             return -1;
00971         if (read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTRA_DC], DC_START_BITS, 0) < 0)
00972             return -1;
00973         if (read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTER_DC], DC_START_BITS, 1) < 0)
00974             return -1;
00975         if (read_runs(c->avctx, gb, &c->bundle[BINK_SRC_RUN]) < 0)
00976             return -1;
00977 
00978         if (by == bh)
00979             break;
00980         dst  = c->pic.data[plane_idx]  + 8*by*stride;
00981         prev = c->last.data[plane_idx] + 8*by*stride;
00982         for (bx = 0; bx < bw; bx++, dst += 8, prev += 8) {
00983             blk = get_value(c, BINK_SRC_BLOCK_TYPES);
00984             // 16x16 block type on odd line means part of the already decoded block, so skip it
00985             if ((by & 1) && blk == SCALED_BLOCK) {
00986                 bx++;
00987                 dst  += 8;
00988                 prev += 8;
00989                 continue;
00990             }
00991             switch (blk) {
00992             case SKIP_BLOCK:
00993                 c->dsp.put_pixels_tab[1][0](dst, prev, stride, 8);
00994                 break;
00995             case SCALED_BLOCK:
00996                 blk = get_value(c, BINK_SRC_SUB_BLOCK_TYPES);
00997                 switch (blk) {
00998                 case RUN_BLOCK:
00999                     scan = bink_patterns[get_bits(gb, 4)];
01000                     i = 0;
01001                     do {
01002                         int run = get_value(c, BINK_SRC_RUN) + 1;
01003 
01004                         i += run;
01005                         if (i > 64) {
01006                             av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
01007                             return -1;
01008                         }
01009                         if (get_bits1(gb)) {
01010                             v = get_value(c, BINK_SRC_COLORS);
01011                             for (j = 0; j < run; j++)
01012                                 ublock[*scan++] = v;
01013                         } else {
01014                             for (j = 0; j < run; j++)
01015                                 ublock[*scan++] = get_value(c, BINK_SRC_COLORS);
01016                         }
01017                     } while (i < 63);
01018                     if (i == 63)
01019                         ublock[*scan++] = get_value(c, BINK_SRC_COLORS);
01020                     break;
01021                 case INTRA_BLOCK:
01022                     c->dsp.clear_block(block);
01023                     block[0] = get_value(c, BINK_SRC_INTRA_DC);
01024                     read_dct_coeffs(gb, block, c->scantable.permutated, bink_intra_quant, -1);
01025                     c->dsp.idct(block);
01026                     c->dsp.put_pixels_nonclamped(block, ublock, 8);
01027                     break;
01028                 case FILL_BLOCK:
01029                     v = get_value(c, BINK_SRC_COLORS);
01030                     c->dsp.fill_block_tab[0](dst, v, stride, 16);
01031                     break;
01032                 case PATTERN_BLOCK:
01033                     for (i = 0; i < 2; i++)
01034                         col[i] = get_value(c, BINK_SRC_COLORS);
01035                     for (j = 0; j < 8; j++) {
01036                         v = get_value(c, BINK_SRC_PATTERN);
01037                         for (i = 0; i < 8; i++, v >>= 1)
01038                             ublock[i + j*8] = col[v & 1];
01039                     }
01040                     break;
01041                 case RAW_BLOCK:
01042                     for (j = 0; j < 8; j++)
01043                         for (i = 0; i < 8; i++)
01044                             ublock[i + j*8] = get_value(c, BINK_SRC_COLORS);
01045                     break;
01046                 default:
01047                     av_log(c->avctx, AV_LOG_ERROR, "Incorrect 16x16 block type %d\n", blk);
01048                     return -1;
01049                 }
01050                 if (blk != FILL_BLOCK)
01051                 c->dsp.scale_block(ublock, dst, stride);
01052                 bx++;
01053                 dst  += 8;
01054                 prev += 8;
01055                 break;
01056             case MOTION_BLOCK:
01057                 xoff = get_value(c, BINK_SRC_X_OFF);
01058                 yoff = get_value(c, BINK_SRC_Y_OFF);
01059                 ref = prev + xoff + yoff * stride;
01060                 if (ref < ref_start || ref > ref_end) {
01061                     av_log(c->avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
01062                            bx*8 + xoff, by*8 + yoff);
01063                     return -1;
01064                 }
01065                 c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
01066                 break;
01067             case RUN_BLOCK:
01068                 scan = bink_patterns[get_bits(gb, 4)];
01069                 i = 0;
01070                 do {
01071                     int run = get_value(c, BINK_SRC_RUN) + 1;
01072 
01073                     i += run;
01074                     if (i > 64) {
01075                         av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
01076                         return -1;
01077                     }
01078                     if (get_bits1(gb)) {
01079                         v = get_value(c, BINK_SRC_COLORS);
01080                         for (j = 0; j < run; j++)
01081                             dst[coordmap[*scan++]] = v;
01082                     } else {
01083                         for (j = 0; j < run; j++)
01084                             dst[coordmap[*scan++]] = get_value(c, BINK_SRC_COLORS);
01085                     }
01086                 } while (i < 63);
01087                 if (i == 63)
01088                     dst[coordmap[*scan++]] = get_value(c, BINK_SRC_COLORS);
01089                 break;
01090             case RESIDUE_BLOCK:
01091                 xoff = get_value(c, BINK_SRC_X_OFF);
01092                 yoff = get_value(c, BINK_SRC_Y_OFF);
01093                 ref = prev + xoff + yoff * stride;
01094                 if (ref < ref_start || ref > ref_end) {
01095                     av_log(c->avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
01096                            bx*8 + xoff, by*8 + yoff);
01097                     return -1;
01098                 }
01099                 c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
01100                 c->dsp.clear_block(block);
01101                 v = get_bits(gb, 7);
01102                 read_residue(gb, block, v);
01103                 c->dsp.add_pixels8(dst, block, stride);
01104                 break;
01105             case INTRA_BLOCK:
01106                 c->dsp.clear_block(block);
01107                 block[0] = get_value(c, BINK_SRC_INTRA_DC);
01108                 read_dct_coeffs(gb, block, c->scantable.permutated, bink_intra_quant, -1);
01109                 c->dsp.idct_put(dst, stride, block);
01110                 break;
01111             case FILL_BLOCK:
01112                 v = get_value(c, BINK_SRC_COLORS);
01113                 c->dsp.fill_block_tab[1](dst, v, stride, 8);
01114                 break;
01115             case INTER_BLOCK:
01116                 xoff = get_value(c, BINK_SRC_X_OFF);
01117                 yoff = get_value(c, BINK_SRC_Y_OFF);
01118                 ref = prev + xoff + yoff * stride;
01119                 c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
01120                 c->dsp.clear_block(block);
01121                 block[0] = get_value(c, BINK_SRC_INTER_DC);
01122                 read_dct_coeffs(gb, block, c->scantable.permutated, bink_inter_quant, -1);
01123                 c->dsp.idct_add(dst, stride, block);
01124                 break;
01125             case PATTERN_BLOCK:
01126                 for (i = 0; i < 2; i++)
01127                     col[i] = get_value(c, BINK_SRC_COLORS);
01128                 for (i = 0; i < 8; i++) {
01129                     v = get_value(c, BINK_SRC_PATTERN);
01130                     for (j = 0; j < 8; j++, v >>= 1)
01131                         dst[i*stride + j] = col[v & 1];
01132                 }
01133                 break;
01134             case RAW_BLOCK:
01135                 for (i = 0; i < 8; i++)
01136                     memcpy(dst + i*stride, c->bundle[BINK_SRC_COLORS].cur_ptr + i*8, 8);
01137                 c->bundle[BINK_SRC_COLORS].cur_ptr += 64;
01138                 break;
01139             default:
01140                 av_log(c->avctx, AV_LOG_ERROR, "Unknown block type %d\n", blk);
01141                 return -1;
01142             }
01143         }
01144     }
01145     if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary
01146         skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F));
01147 
01148     return 0;
01149 }
01150 
01151 static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *pkt)
01152 {
01153     BinkContext * const c = avctx->priv_data;
01154     GetBitContext gb;
01155     int plane, plane_idx;
01156     int bits_count = pkt->size << 3;
01157 
01158     if (c->version > 'b') {
01159         if(c->pic.data[0])
01160             avctx->release_buffer(avctx, &c->pic);
01161 
01162         if(avctx->get_buffer(avctx, &c->pic) < 0){
01163             av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
01164             return -1;
01165         }
01166     } else {
01167         if(avctx->reget_buffer(avctx, &c->pic) < 0){
01168             av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
01169             return -1;
01170         }
01171     }
01172 
01173     init_get_bits(&gb, pkt->data, bits_count);
01174     if (c->has_alpha) {
01175         if (c->version >= 'i')
01176             skip_bits_long(&gb, 32);
01177         if (bink_decode_plane(c, &gb, 3, 0) < 0)
01178             return -1;
01179     }
01180     if (c->version >= 'i')
01181         skip_bits_long(&gb, 32);
01182 
01183     for (plane = 0; plane < 3; plane++) {
01184         plane_idx = (!plane || !c->swap_planes) ? plane : (plane ^ 3);
01185 
01186         if (c->version > 'b') {
01187             if (bink_decode_plane(c, &gb, plane_idx, !!plane) < 0)
01188                 return -1;
01189         } else {
01190             if (binkb_decode_plane(c, &gb, plane_idx, !pkt->pts, !!plane) < 0)
01191                 return -1;
01192         }
01193         if (get_bits_count(&gb) >= bits_count)
01194             break;
01195     }
01196     emms_c();
01197 
01198     *data_size = sizeof(AVFrame);
01199     *(AVFrame*)data = c->pic;
01200 
01201     if (c->version > 'b')
01202         FFSWAP(AVFrame, c->pic, c->last);
01203 
01204     /* always report that the buffer was completely consumed */
01205     return pkt->size;
01206 }
01207 
01211 static av_cold void binkb_calc_quant(void)
01212 {
01213     uint8_t inv_bink_scan[64];
01214     double s[64];
01215     int i, j;
01216 
01217     for (j = 0; j < 8; j++) {
01218         for (i = 0; i < 8; i++) {
01219             if (j && j != 4)
01220                if (i && i != 4)
01221                    s[j*8 + i] = cos(j * M_PI/16.0) * cos(i * M_PI/16.0) * 2.0;
01222                else
01223                    s[j*8 + i] = cos(j * M_PI/16.0) * sqrt(2.0);
01224             else
01225                if (i && i != 4)
01226                    s[j*8 + i] = cos(i * M_PI/16.0) * sqrt(2.0);
01227                else
01228                    s[j*8 + i] = 1.0;
01229         }
01230     }
01231 
01232     for (i = 0; i < 64; i++)
01233         inv_bink_scan[bink_scan[i]] = i;
01234 
01235     for (j = 0; j < 16; j++) {
01236         for (i = 0; i < 64; i++) {
01237             int k = inv_bink_scan[i];
01238             if (s[i] == 1.0) {
01239                 binkb_intra_quant[j][k] = (1L << 12) * binkb_intra_seed[i] *
01240                                           binkb_num[j]/binkb_den[j];
01241                 binkb_inter_quant[j][k] = (1L << 12) * binkb_inter_seed[i] *
01242                                           binkb_num[j]/binkb_den[j];
01243             } else {
01244                 binkb_intra_quant[j][k] = (1L << 12) * binkb_intra_seed[i] * s[i] *
01245                                           binkb_num[j]/(double)binkb_den[j];
01246                 binkb_inter_quant[j][k] = (1L << 12) * binkb_inter_seed[i] * s[i] *
01247                                           binkb_num[j]/(double)binkb_den[j];
01248             }
01249         }
01250     }
01251 }
01252 
01253 static av_cold int decode_init(AVCodecContext *avctx)
01254 {
01255     BinkContext * const c = avctx->priv_data;
01256     static VLC_TYPE table[16 * 128][2];
01257     static int binkb_initialised = 0;
01258     int i;
01259     int flags;
01260 
01261     c->version = avctx->codec_tag >> 24;
01262     if (avctx->extradata_size < 4) {
01263         av_log(avctx, AV_LOG_ERROR, "Extradata missing or too short\n");
01264         return -1;
01265     }
01266     flags = AV_RL32(avctx->extradata);
01267     c->has_alpha = flags & BINK_FLAG_ALPHA;
01268     c->swap_planes = c->version >= 'h';
01269     if (!bink_trees[15].table) {
01270         for (i = 0; i < 16; i++) {
01271             const int maxbits = bink_tree_lens[i][15];
01272             bink_trees[i].table = table + i*128;
01273             bink_trees[i].table_allocated = 1 << maxbits;
01274             init_vlc(&bink_trees[i], maxbits, 16,
01275                      bink_tree_lens[i], 1, 1,
01276                      bink_tree_bits[i], 1, 1, INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
01277         }
01278     }
01279     c->avctx = avctx;
01280 
01281     c->pic.data[0] = NULL;
01282 
01283     if (av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0) {
01284         return 1;
01285     }
01286 
01287     avctx->pix_fmt = c->has_alpha ? PIX_FMT_YUVA420P : PIX_FMT_YUV420P;
01288 
01289     avctx->idct_algo = FF_IDCT_BINK;
01290     dsputil_init(&c->dsp, avctx);
01291     ff_init_scantable(c->dsp.idct_permutation, &c->scantable, bink_scan);
01292 
01293     init_bundles(c);
01294 
01295     if (c->version == 'b') {
01296         if (!binkb_initialised) {
01297             binkb_calc_quant();
01298             binkb_initialised = 1;
01299         }
01300     }
01301 
01302     return 0;
01303 }
01304 
01305 static av_cold int decode_end(AVCodecContext *avctx)
01306 {
01307     BinkContext * const c = avctx->priv_data;
01308 
01309     if (c->pic.data[0])
01310         avctx->release_buffer(avctx, &c->pic);
01311     if (c->last.data[0])
01312         avctx->release_buffer(avctx, &c->last);
01313 
01314     free_bundles(c);
01315     return 0;
01316 }
01317 
01318 AVCodec ff_bink_decoder = {
01319     "binkvideo",
01320     AVMEDIA_TYPE_VIDEO,
01321     CODEC_ID_BINKVIDEO,
01322     sizeof(BinkContext),
01323     decode_init,
01324     NULL,
01325     decode_end,
01326     decode_frame,
01327     .long_name = NULL_IF_CONFIG_SMALL("Bink video"),
01328 };