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Revision 1.39.2.10 - (view) (download)

1 : edgomez 1.38 /******************************************************************************
2 :     * *
3 :     * This file is part of XviD, a free MPEG-4 video encoder/decoder *
4 :     * *
5 :     * XviD is an implementation of a part of one or more MPEG-4 Video tools *
6 :     * as specified in ISO/IEC 14496-2 standard. Those intending to use this *
7 :     * software module in hardware or software products are advised that its *
8 :     * use may infringe existing patents or copyrights, and any such use *
9 :     * would be at such party's own risk. The original developer of this *
10 :     * software module and his/her company, and subsequent editors and their *
11 :     * companies, will have no liability for use of this software or *
12 :     * modifications or derivatives thereof. *
13 :     * *
14 :     * XviD is free software; you can redistribute it and/or modify it *
15 :     * under the terms of the GNU General Public License as published by *
16 :     * the Free Software Foundation; either version 2 of the License, or *
17 :     * (at your option) any later version. *
18 :     * *
19 :     * XviD is distributed in the hope that it will be useful, but *
20 :     * WITHOUT ANY WARRANTY; without even the implied warranty of *
21 :     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
22 :     * GNU General Public License for more details. *
23 :     * *
24 :     * You should have received a copy of the GNU General Public License *
25 :     * along with this program; if not, write to the Free Software *
26 :     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
27 :     * *
28 :     ******************************************************************************/
29 :    
30 :     /******************************************************************************
31 :     * *
32 :     * bitstream.c *
33 :     * *
34 :     * Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> *
35 :     * *
36 :     * For more information visit the XviD homepage: http://www.xvid.org *
37 :     * *
38 :     ******************************************************************************/
39 :    
40 :     /******************************************************************************
41 :     * *
42 :     * Revision history: *
43 :     * *
44 :     * 05.01.2003 GMC support - gruel *
45 :     * 04.10.2002 qpel support - Isibaar *
46 :     * 11.07.2002 add VOP width & height return to dec when dec->width *
47 :     * or dec->height is 0 (for use in examples/ex1.c) *
48 :     * MinChen <chenm001@163.com> *
49 :     * 22.05.2002 bs_put_matrix fix *
50 :     * 20.05.2002 added BitstreamWriteUserData *
51 :     * 19.06.2002 Fix a little bug in use custom quant matrix *
52 :     * MinChen <chenm001@163.com> *
53 :     * 08.05.2002 add low_delay support for B_VOP decode *
54 :     * MinChen <chenm001@163.com> *
55 :     * 06.05.2002 low_delay *
56 :     * 06.05.2002 fixed fincr/fbase error *
57 :     * 01.05.2002 added BVOP support to BitstreamWriteVopHeader *
58 :     * 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> *
59 :     * 26.03.2002 interlacing support *
60 :     * 03.03.2002 qmatrix writing *
61 :     * 03.03.2002 merged BITREADER and BITWRITER *
62 :     * 30.02.2002 intra_dc_threshold support *
63 :     * 04.12.2001 support for additional headers *
64 :     * 16.12.2001 inital version *
65 :     * *
66 :     ******************************************************************************/
67 :    
68 :    
69 :     #include <string.h>
70 :     #include <stdio.h>
71 : Isibaar 1.1
72 :     #include "bitstream.h"
73 :     #include "zigzag.h"
74 : Isibaar 1.2 #include "../quant/quant_matrix.h"
75 : edgomez 1.38 #include "mbcoding.h"
76 : Isibaar 1.1
77 : chenm001 1.6
78 : edgomez 1.14 static uint32_t __inline
79 :     log2bin(uint32_t value)
80 : Isibaar 1.1 {
81 : chenm001 1.6 /* Changed by Chenm001 */
82 : suxen_drol 1.34 #if !defined(_MSC_VER)
83 : Isibaar 1.1 int n = 0;
84 : edgomez 1.14
85 :     while (value) {
86 : Isibaar 1.1 value >>= 1;
87 :     n++;
88 :     }
89 :     return n;
90 : chenm001 1.6 #else
91 : edgomez 1.14 __asm {
92 : suxen_drol 1.15 bsr eax, value
93 :     inc eax
94 :     }
95 : chenm001 1.6 #endif
96 : Isibaar 1.1 }
97 :    
98 :    
99 : edgomez 1.14 static const uint32_t intra_dc_threshold_table[] = {
100 :     32, /* never use */
101 : Isibaar 1.1 13,
102 :     15,
103 :     17,
104 :     19,
105 :     21,
106 :     23,
107 :     1,
108 :     };
109 :    
110 :    
111 : edgomez 1.14 void
112 :     bs_get_matrix(Bitstream * bs,
113 :     uint8_t * matrix)
114 :     {
115 :     int i = 0;
116 :     int last, value = 0;
117 :    
118 :     do {
119 :     last = value;
120 :     value = BitstreamGetBits(bs, 8);
121 :     matrix[scan_tables[0][i++]] = value;
122 :     }
123 :     while (value != 0 && i < 64);
124 : edgomez 1.39.2.10 i--; /* fix little bug at coeff not full */
125 : edgomez 1.14
126 :     while (i < 64) {
127 :     matrix[scan_tables[0][i++]] = last;
128 :     }
129 :     }
130 : Isibaar 1.2
131 : suxen_drol 1.21
132 :    
133 : edgomez 1.39.2.10 /*
134 :     * for PVOP addbits == fcode - 1
135 :     * for BVOP addbits == max(fcode,bcode) - 1
136 :     * returns mbpos
137 :     */
138 : suxen_drol 1.21 int
139 : edgomez 1.38 read_video_packet_header(Bitstream *bs,
140 :     DECODER * dec,
141 :     const int addbits,
142 :     int * quant,
143 :     int * fcode_forward,
144 :     int * fcode_backward,
145 :     int * intra_dc_threshold)
146 : suxen_drol 1.21 {
147 : edgomez 1.38 int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits;
148 :     int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1);
149 : suxen_drol 1.21 int mbnum;
150 : edgomez 1.38 int hec = 0;
151 : suxen_drol 1.21
152 :     BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs));
153 : edgomez 1.38 BitstreamSkip(bs, startcode_bits);
154 : suxen_drol 1.21
155 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<video_packet_header>\n");
156 : suxen_drol 1.22
157 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR)
158 :     {
159 :     hec = BitstreamGetBit(bs); /* header_extension_code */
160 :     if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */))
161 :     {
162 :     BitstreamSkip(bs, 13); /* vop_width */
163 :     READ_MARKER();
164 :     BitstreamSkip(bs, 13); /* vop_height */
165 :     READ_MARKER();
166 :     BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */
167 :     READ_MARKER();
168 :     BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */
169 :     READ_MARKER();
170 :     }
171 :     }
172 :    
173 :     mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */
174 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "mbnum %i\n", mbnum);
175 : suxen_drol 1.21
176 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY)
177 :     {
178 :     *quant = BitstreamGetBits(bs, dec->quant_bits); /* quant_scale */
179 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant);
180 : edgomez 1.38 }
181 : suxen_drol 1.21
182 : edgomez 1.38 if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR)
183 :     hec = BitstreamGetBit(bs); /* header_extension_code */
184 : suxen_drol 1.21
185 :    
186 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "header_extension_code %i\n", hec);
187 : edgomez 1.38 if (hec)
188 :     {
189 :     int time_base;
190 :     int time_increment;
191 :     int coding_type;
192 :    
193 :     for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */
194 :     READ_MARKER();
195 :     if (dec->time_inc_bits)
196 :     time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */
197 :     READ_MARKER();
198 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"time %i:%i\n", time_base, time_increment);
199 : edgomez 1.38
200 :     coding_type = BitstreamGetBits(bs, 2);
201 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"coding_type %i\n", coding_type);
202 : edgomez 1.38
203 :     if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR)
204 :     {
205 :     BitstreamSkip(bs, 1); /* change_conv_ratio_disable */
206 :     if (coding_type != I_VOP)
207 :     BitstreamSkip(bs, 1); /* vop_shape_coding_type */
208 :     }
209 :    
210 :     if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY)
211 :     {
212 :     *intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)];
213 :    
214 :     if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP &&
215 :     dec->sprite_warping_points > 0)
216 :     {
217 : edgomez 1.39.2.10 /* TODO: sprite trajectory */
218 : edgomez 1.38 }
219 :     if (dec->reduced_resolution_enable &&
220 :     dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR &&
221 :     (coding_type == P_VOP || coding_type == I_VOP))
222 :     {
223 :     BitstreamSkip(bs, 1); /* XXX: vop_reduced_resolution */
224 :     }
225 :    
226 :     if (coding_type != I_VOP && fcode_forward)
227 :     {
228 :     *fcode_forward = BitstreamGetBits(bs, 3);
229 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"fcode_forward %i\n", *fcode_forward);
230 : edgomez 1.38 }
231 :    
232 :     if (coding_type == B_VOP && fcode_backward)
233 :     {
234 :     *fcode_backward = BitstreamGetBits(bs, 3);
235 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward);
236 : edgomez 1.38 }
237 :     }
238 :    
239 :     }
240 :    
241 :     if (dec->newpred_enable)
242 :     {
243 :     int vop_id;
244 :     int vop_id_for_prediction;
245 :    
246 :     vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
247 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id);
248 : edgomez 1.38 if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */
249 :     {
250 :     vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
251 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction);
252 : edgomez 1.38 }
253 :     READ_MARKER();
254 :     }
255 : suxen_drol 1.21
256 :     return mbnum;
257 :     }
258 :    
259 :    
260 :    
261 : edgomez 1.38
262 :     /* vol estimation header */
263 :     static void
264 :     read_vol_complexity_estimation_header(Bitstream * bs, DECODER * dec)
265 :     {
266 :     ESTIMATION * e = &dec->estimation;
267 :    
268 :     e->method = BitstreamGetBits(bs, 2); /* estimation_method */
269 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"+ complexity_estimation_header; method=%i\n", e->method);
270 : edgomez 1.38
271 :     if (e->method == 0 || e->method == 1)
272 :     {
273 :     if (!BitstreamGetBit(bs)) /* shape_complexity_estimation_disable */
274 :     {
275 :     e->opaque = BitstreamGetBit(bs); /* opaque */
276 :     e->transparent = BitstreamGetBit(bs); /* transparent */
277 :     e->intra_cae = BitstreamGetBit(bs); /* intra_cae */
278 :     e->inter_cae = BitstreamGetBit(bs); /* inter_cae */
279 :     e->no_update = BitstreamGetBit(bs); /* no_update */
280 :     e->upsampling = BitstreamGetBit(bs); /* upsampling */
281 :     }
282 :    
283 :     if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_1_disable */
284 :     {
285 :     e->intra_blocks = BitstreamGetBit(bs); /* intra_blocks */
286 :     e->inter_blocks = BitstreamGetBit(bs); /* inter_blocks */
287 :     e->inter4v_blocks = BitstreamGetBit(bs); /* inter4v_blocks */
288 :     e->not_coded_blocks = BitstreamGetBit(bs); /* not_coded_blocks */
289 :     }
290 :     }
291 :    
292 :     READ_MARKER();
293 :    
294 :     if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_2_disable */
295 :     {
296 :     e->dct_coefs = BitstreamGetBit(bs); /* dct_coefs */
297 :     e->dct_lines = BitstreamGetBit(bs); /* dct_lines */
298 :     e->vlc_symbols = BitstreamGetBit(bs); /* vlc_symbols */
299 :     e->vlc_bits = BitstreamGetBit(bs); /* vlc_bits */
300 :     }
301 :    
302 :     if (!BitstreamGetBit(bs)) /* motion_compensation_complexity_disable */
303 :     {
304 :     e->apm = BitstreamGetBit(bs); /* apm */
305 :     e->npm = BitstreamGetBit(bs); /* npm */
306 :     e->interpolate_mc_q = BitstreamGetBit(bs); /* interpolate_mc_q */
307 :     e->forw_back_mc_q = BitstreamGetBit(bs); /* forw_back_mc_q */
308 :     e->halfpel2 = BitstreamGetBit(bs); /* halfpel2 */
309 :     e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */
310 :     }
311 :    
312 :     READ_MARKER();
313 :    
314 :     if (e->method == 1)
315 :     {
316 :     if (!BitstreamGetBit(bs)) /* version2_complexity_estimation_disable */
317 :     {
318 :     e->sadct = BitstreamGetBit(bs); /* sadct */
319 :     e->quarterpel = BitstreamGetBit(bs); /* quarterpel */
320 :     }
321 :     }
322 :     }
323 :    
324 :    
325 :     /* vop estimation header */
326 :     static void
327 :     read_vop_complexity_estimation_header(Bitstream * bs, DECODER * dec, int coding_type)
328 :     {
329 :     ESTIMATION * e = &dec->estimation;
330 :    
331 :     if (e->method == 0 || e->method == 1)
332 :     {
333 :     if (coding_type == I_VOP) {
334 :     if (e->opaque) BitstreamSkip(bs, 8); /* dcecs_opaque */
335 :     if (e->transparent) BitstreamSkip(bs, 8); /* */
336 :     if (e->intra_cae) BitstreamSkip(bs, 8); /* */
337 :     if (e->inter_cae) BitstreamSkip(bs, 8); /* */
338 :     if (e->no_update) BitstreamSkip(bs, 8); /* */
339 :     if (e->upsampling) BitstreamSkip(bs, 8); /* */
340 :     if (e->intra_blocks) BitstreamSkip(bs, 8); /* */
341 :     if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */
342 :     if (e->dct_coefs) BitstreamSkip(bs, 8); /* */
343 :     if (e->dct_lines) BitstreamSkip(bs, 8); /* */
344 :     if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */
345 :     if (e->vlc_bits) BitstreamSkip(bs, 8); /* */
346 :     if (e->sadct) BitstreamSkip(bs, 8); /* */
347 :     }
348 :    
349 :     if (coding_type == P_VOP) {
350 :     if (e->opaque) BitstreamSkip(bs, 8); /* */
351 :     if (e->transparent) BitstreamSkip(bs, 8); /* */
352 :     if (e->intra_cae) BitstreamSkip(bs, 8); /* */
353 :     if (e->inter_cae) BitstreamSkip(bs, 8); /* */
354 :     if (e->no_update) BitstreamSkip(bs, 8); /* */
355 :     if (e->upsampling) BitstreamSkip(bs, 8); /* */
356 :     if (e->intra_blocks) BitstreamSkip(bs, 8); /* */
357 :     if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */
358 :     if (e->dct_coefs) BitstreamSkip(bs, 8); /* */
359 :     if (e->dct_lines) BitstreamSkip(bs, 8); /* */
360 :     if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */
361 :     if (e->vlc_bits) BitstreamSkip(bs, 8); /* */
362 :     if (e->inter_blocks) BitstreamSkip(bs, 8); /* */
363 :     if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */
364 :     if (e->apm) BitstreamSkip(bs, 8); /* */
365 :     if (e->npm) BitstreamSkip(bs, 8); /* */
366 :     if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */
367 :     if (e->halfpel2) BitstreamSkip(bs, 8); /* */
368 :     if (e->halfpel4) BitstreamSkip(bs, 8); /* */
369 :     if (e->sadct) BitstreamSkip(bs, 8); /* */
370 :     if (e->quarterpel) BitstreamSkip(bs, 8); /* */
371 :     }
372 :     if (coding_type == B_VOP) {
373 :     if (e->opaque) BitstreamSkip(bs, 8); /* */
374 :     if (e->transparent) BitstreamSkip(bs, 8); /* */
375 :     if (e->intra_cae) BitstreamSkip(bs, 8); /* */
376 :     if (e->inter_cae) BitstreamSkip(bs, 8); /* */
377 :     if (e->no_update) BitstreamSkip(bs, 8); /* */
378 :     if (e->upsampling) BitstreamSkip(bs, 8); /* */
379 :     if (e->intra_blocks) BitstreamSkip(bs, 8); /* */
380 :     if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */
381 :     if (e->dct_coefs) BitstreamSkip(bs, 8); /* */
382 :     if (e->dct_lines) BitstreamSkip(bs, 8); /* */
383 :     if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */
384 :     if (e->vlc_bits) BitstreamSkip(bs, 8); /* */
385 :     if (e->inter_blocks) BitstreamSkip(bs, 8); /* */
386 :     if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */
387 :     if (e->apm) BitstreamSkip(bs, 8); /* */
388 :     if (e->npm) BitstreamSkip(bs, 8); /* */
389 :     if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */
390 :     if (e->halfpel2) BitstreamSkip(bs, 8); /* */
391 :     if (e->halfpel4) BitstreamSkip(bs, 8); /* */
392 :     if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */
393 :     if (e->sadct) BitstreamSkip(bs, 8); /* */
394 :     if (e->quarterpel) BitstreamSkip(bs, 8); /* */
395 :     }
396 :    
397 :     if (coding_type == S_VOP && dec->sprite_enable == SPRITE_STATIC) {
398 :     if (e->intra_blocks) BitstreamSkip(bs, 8); /* */
399 :     if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */
400 :     if (e->dct_coefs) BitstreamSkip(bs, 8); /* */
401 :     if (e->dct_lines) BitstreamSkip(bs, 8); /* */
402 :     if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */
403 :     if (e->vlc_bits) BitstreamSkip(bs, 8); /* */
404 :     if (e->inter_blocks) BitstreamSkip(bs, 8); /* */
405 :     if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */
406 :     if (e->apm) BitstreamSkip(bs, 8); /* */
407 :     if (e->npm) BitstreamSkip(bs, 8); /* */
408 :     if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */
409 :     if (e->halfpel2) BitstreamSkip(bs, 8); /* */
410 :     if (e->halfpel4) BitstreamSkip(bs, 8); /* */
411 :     if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */
412 :     }
413 :     }
414 :     }
415 :    
416 :    
417 :    
418 :    
419 :    
420 : Isibaar 1.1 /*
421 :     decode headers
422 :     returns coding_type, or -1 if error
423 :     */
424 :    
425 : suxen_drol 1.22 #define VIDOBJ_START_CODE_MASK 0x0000001f
426 :     #define VIDOBJLAY_START_CODE_MASK 0x0000000f
427 :    
428 : edgomez 1.14 int
429 :     BitstreamReadHeaders(Bitstream * bs,
430 :     DECODER * dec,
431 :     uint32_t * rounding,
432 : edgomez 1.38 uint32_t * reduced_resolution,
433 : edgomez 1.14 uint32_t * quant,
434 :     uint32_t * fcode_forward,
435 :     uint32_t * fcode_backward,
436 : edgomez 1.38 uint32_t * intra_dc_threshold,
437 :     WARPPOINTS *gmc_warp)
438 : Isibaar 1.1 {
439 :     uint32_t vol_ver_id;
440 :     uint32_t coding_type;
441 :     uint32_t start_code;
442 : edgomez 1.14 uint32_t time_incr = 0;
443 : edgomez 1.39 int32_t time_increment = 0;
444 : edgomez 1.38 int resize = 0;
445 : chenm001 1.9
446 : edgomez 1.14 do {
447 : edgomez 1.38
448 : Isibaar 1.1 BitstreamByteAlign(bs);
449 :     start_code = BitstreamShowBits(bs, 32);
450 :    
451 : edgomez 1.14 if (start_code == VISOBJSEQ_START_CODE) {
452 : suxen_drol 1.22
453 :     int profile;
454 :    
455 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object_sequence>\n");
456 : suxen_drol 1.22
457 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* visual_object_sequence_start_code */
458 :     profile = BitstreamGetBits(bs, 8); /* profile_and_level_indication */
459 : suxen_drol 1.22
460 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "profile_and_level_indication %i\n", profile);
461 : suxen_drol 1.22
462 : edgomez 1.14 } else if (start_code == VISOBJSEQ_STOP_CODE) {
463 : suxen_drol 1.22
464 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* visual_object_sequence_stop_code */
465 : suxen_drol 1.22
466 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n");
467 : suxen_drol 1.22
468 : edgomez 1.14 } else if (start_code == VISOBJ_START_CODE) {
469 : edgomez 1.38 int visobj_ver_id;
470 : suxen_drol 1.22
471 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n");
472 : suxen_drol 1.22
473 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* visual_object_start_code */
474 :     if (BitstreamGetBit(bs)) /* is_visual_object_identified */
475 : Isibaar 1.1 {
476 : edgomez 1.39.2.10 visobj_ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */
477 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", visobj_ver_id);
478 : edgomez 1.39.2.10 BitstreamSkip(bs, 3); /* visual_object_priority */
479 : edgomez 1.14 } else {
480 : edgomez 1.38 visobj_ver_id = 1;
481 : Isibaar 1.1 }
482 :    
483 : edgomez 1.39.2.10 if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */
484 : Isibaar 1.1 {
485 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "visual_object_type != video\n");
486 : Isibaar 1.1 return -1;
487 :     }
488 :     BitstreamSkip(bs, 4);
489 :    
490 : edgomez 1.39.2.10 /* video_signal_type */
491 : Isibaar 1.1
492 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* video_signal_type */
493 : Isibaar 1.1 {
494 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"+ video_signal_type\n");
495 : edgomez 1.39.2.10 BitstreamSkip(bs, 3); /* video_format */
496 :     BitstreamSkip(bs, 1); /* video_range */
497 :     if (BitstreamGetBit(bs)) /* color_description */
498 : Isibaar 1.1 {
499 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"+ color_description");
500 : edgomez 1.39.2.10 BitstreamSkip(bs, 8); /* color_primaries */
501 :     BitstreamSkip(bs, 8); /* transfer_characteristics */
502 :     BitstreamSkip(bs, 8); /* matrix_coefficients */
503 : Isibaar 1.1 }
504 :     }
505 : suxen_drol 1.22 } else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) {
506 :    
507 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<video_object>\n");
508 :     DPRINTF(XVID_DEBUG_HEADER, "vo id %i\n", start_code & VIDOBJ_START_CODE_MASK);
509 : suxen_drol 1.22
510 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* video_object_start_code */
511 : suxen_drol 1.22
512 :     } else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) {
513 :    
514 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<video_object_layer>\n");
515 :     DPRINTF(XVID_DEBUG_HEADER, "vol id %i\n", start_code & VIDOBJLAY_START_CODE_MASK);
516 : suxen_drol 1.22
517 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* video_object_layer_start_code */
518 :     BitstreamSkip(bs, 1); /* random_accessible_vol */
519 : Isibaar 1.1
520 : edgomez 1.39.2.10 BitstreamSkip(bs, 8); /* video_object_type_indication */
521 : Isibaar 1.1
522 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* is_object_layer_identifier */
523 : Isibaar 1.1 {
524 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "+ is_object_layer_identifier\n");
525 : edgomez 1.39.2.10 vol_ver_id = BitstreamGetBits(bs, 4); /* video_object_layer_verid */
526 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id);
527 : edgomez 1.39.2.10 BitstreamSkip(bs, 3); /* video_object_layer_priority */
528 : edgomez 1.14 } else {
529 : Isibaar 1.1 vol_ver_id = 1;
530 :     }
531 :    
532 : edgomez 1.38 dec->aspect_ratio = BitstreamGetBits(bs, 4);
533 :    
534 : edgomez 1.39.2.10 if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */
535 : Isibaar 1.1 {
536 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "+ aspect_ratio_info\n");
537 : edgomez 1.39.2.10 dec->par_width = BitstreamGetBits(bs, 8); /* par_width */
538 :     dec->par_height = BitstreamGetBits(bs, 8); /* par_height */
539 : Isibaar 1.1 }
540 :    
541 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* vol_control_parameters */
542 : Isibaar 1.1 {
543 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "+ vol_control_parameters\n");
544 : edgomez 1.39.2.10 BitstreamSkip(bs, 2); /* chroma_format */
545 :     dec->low_delay = BitstreamGetBit(bs); /* low_delay */
546 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "low_delay %i\n", dec->low_delay);
547 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* vbv_parameters */
548 : Isibaar 1.1 {
549 : edgomez 1.38 unsigned int bitrate;
550 :     unsigned int buffer_size;
551 :     unsigned int occupancy;
552 :    
553 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"+ vbv_parameters\n");
554 : edgomez 1.38
555 : edgomez 1.39.2.10 bitrate = BitstreamGetBits(bs,15) << 15; /* first_half_bit_rate */
556 : Isibaar 1.1 READ_MARKER();
557 : edgomez 1.39.2.10 bitrate |= BitstreamGetBits(bs,15); /* latter_half_bit_rate */
558 : Isibaar 1.1 READ_MARKER();
559 : edgomez 1.38
560 : edgomez 1.39.2.10 buffer_size = BitstreamGetBits(bs, 15) << 3; /* first_half_vbv_buffer_size */
561 : Isibaar 1.1 READ_MARKER();
562 : edgomez 1.39.2.10 buffer_size |= BitstreamGetBits(bs, 3); /* latter_half_vbv_buffer_size */
563 : edgomez 1.38
564 : edgomez 1.39.2.10 occupancy = BitstreamGetBits(bs, 11) << 15; /* first_half_vbv_occupancy */
565 : Isibaar 1.1 READ_MARKER();
566 : edgomez 1.39.2.10 occupancy |= BitstreamGetBits(bs, 15); /* latter_half_vbv_occupancy */
567 : Isibaar 1.1 READ_MARKER();
568 : edgomez 1.14
569 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"bitrate %d (unit=400 bps)\n", bitrate);
570 :     DPRINTF(XVID_DEBUG_HEADER,"buffer_size %d (unit=16384 bits)\n", buffer_size);
571 :     DPRINTF(XVID_DEBUG_HEADER,"occupancy %d (unit=64 bits)\n", occupancy);
572 : Isibaar 1.1 }
573 : edgomez 1.38 }else{
574 :     dec->low_delay = dec->low_delay_default;
575 : Isibaar 1.1 }
576 :    
577 : edgomez 1.39.2.10 dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */
578 : edgomez 1.38
579 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "shape %i\n", dec->shape);
580 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR)
581 :     {
582 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR,"non-rectangular shapes are not supported\n");
583 : edgomez 1.38 }
584 : edgomez 1.14
585 :     if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) {
586 : edgomez 1.39.2.10 BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */
587 : Isibaar 1.1 }
588 :    
589 :     READ_MARKER();
590 :    
591 : edgomez 1.39.2.10 /********************** for decode B-frame time ***********************/
592 :     dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */
593 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i\n", dec->time_inc_resolution);
594 : suxen_drol 1.22
595 : edgomez 1.39.2.10 #if 0
596 :     dec->time_inc_resolution--;
597 :     #endif
598 : suxen_drol 1.22
599 : edgomez 1.38 if (dec->time_inc_resolution > 0) {
600 :     dec->time_inc_bits = log2bin(dec->time_inc_resolution-1);
601 : edgomez 1.14 } else {
602 : edgomez 1.39.2.10 #if 0
603 :     dec->time_inc_bits = 0;
604 :     #endif
605 :     /* for "old" xvid compatibility, set time_inc_bits = 1 */
606 : Isibaar 1.1 dec->time_inc_bits = 1;
607 :     }
608 :    
609 :     READ_MARKER();
610 :    
611 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* fixed_vop_rate */
612 : Isibaar 1.1 {
613 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "+ fixed_vop_rate\n");
614 : edgomez 1.39.2.10 BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */
615 : Isibaar 1.1 }
616 :    
617 : edgomez 1.14 if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) {
618 : Isibaar 1.1
619 : edgomez 1.14 if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) {
620 : Isibaar 1.1 uint32_t width, height;
621 :    
622 :     READ_MARKER();
623 : edgomez 1.39.2.10 width = BitstreamGetBits(bs, 13); /* video_object_layer_width */
624 : Isibaar 1.1 READ_MARKER();
625 : edgomez 1.39.2.10 height = BitstreamGetBits(bs, 13); /* video_object_layer_height */
626 : Isibaar 1.1 READ_MARKER();
627 :    
628 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width);
629 :     DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height);
630 : chenm001 1.23
631 : edgomez 1.38 if (dec->width != width || dec->height != height)
632 :     {
633 :     if (dec->fixed_dimensions)
634 :     {
635 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "decoder width/height does not match bitstream\n");
636 : edgomez 1.38 return -1;
637 :     }
638 :     resize = 1;
639 : chenm001 1.23 dec->width = width;
640 :     dec->height = height;
641 : Isibaar 1.1 }
642 :     }
643 : h 1.4
644 : suxen_drol 1.22 dec->interlacing = BitstreamGetBit(bs);
645 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "interlacing %i\n", dec->interlacing);
646 : Isibaar 1.1
647 : edgomez 1.39.2.10 if (!BitstreamGetBit(bs)) /* obmc_disable */
648 : Isibaar 1.1 {
649 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "obmc_disabled==false not supported\n");
650 : edgomez 1.39.2.10 /* TODO */
651 :     /* fucking divx4.02 has this enabled */
652 : Isibaar 1.1 }
653 :    
654 : edgomez 1.39.2.10 dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); /* sprite_enable */
655 : edgomez 1.38
656 :     if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC)
657 : Isibaar 1.1 {
658 : edgomez 1.38 int low_latency_sprite_enable;
659 :    
660 :     if (dec->sprite_enable != SPRITE_GMC)
661 :     {
662 :     int sprite_width;
663 :     int sprite_height;
664 :     int sprite_left_coord;
665 :     int sprite_top_coord;
666 : edgomez 1.39.2.10 sprite_width = BitstreamGetBits(bs, 13); /* sprite_width */
667 : edgomez 1.38 READ_MARKER();
668 : edgomez 1.39.2.10 sprite_height = BitstreamGetBits(bs, 13); /* sprite_height */
669 : edgomez 1.38 READ_MARKER();
670 : edgomez 1.39.2.10 sprite_left_coord = BitstreamGetBits(bs, 13); /* sprite_left_coordinate */
671 : edgomez 1.38 READ_MARKER();
672 : edgomez 1.39.2.10 sprite_top_coord = BitstreamGetBits(bs, 13); /* sprite_top_coordinate */
673 : edgomez 1.38 READ_MARKER();
674 :     }
675 : edgomez 1.39.2.10 dec->sprite_warping_points = BitstreamGetBits(bs, 6); /* no_of_sprite_warping_points */
676 :     dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); /* sprite_warping_accuracy */
677 :     dec->sprite_brightness_change = BitstreamGetBits(bs, 1); /* brightness_change */
678 : edgomez 1.38 if (dec->sprite_enable != SPRITE_GMC)
679 :     {
680 : edgomez 1.39.2.10 low_latency_sprite_enable = BitstreamGetBits(bs, 1); /* low_latency_sprite_enable */
681 : edgomez 1.38 }
682 : Isibaar 1.1 }
683 : edgomez 1.14
684 :     if (vol_ver_id != 1 &&
685 :     dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) {
686 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* sadct_disable */
687 : Isibaar 1.1 }
688 :    
689 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* not_8_bit */
690 : Isibaar 1.1 {
691 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "not_8_bit==true (ignored)\n");
692 : edgomez 1.39.2.10 dec->quant_bits = BitstreamGetBits(bs, 4); /* quant_precision */
693 :     BitstreamSkip(bs, 4); /* bits_per_pixel */
694 : edgomez 1.14 } else {
695 : Isibaar 1.1 dec->quant_bits = 5;
696 :     }
697 :    
698 : edgomez 1.14 if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) {
699 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* no_gray_quant_update */
700 :     BitstreamSkip(bs, 1); /* composition_method */
701 :     BitstreamSkip(bs, 1); /* linear_composition */
702 : Isibaar 1.1 }
703 :    
704 : edgomez 1.39.2.10 dec->quant_type = BitstreamGetBit(bs); /* quant_type */
705 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "quant_type %i\n", dec->quant_type);
706 : Isibaar 1.1
707 : edgomez 1.14 if (dec->quant_type) {
708 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* load_intra_quant_mat */
709 : Isibaar 1.1 {
710 : Isibaar 1.3 uint8_t matrix[64];
711 : edgomez 1.14
712 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat\n");
713 : suxen_drol 1.22
714 : Isibaar 1.2 bs_get_matrix(bs, matrix);
715 :     set_intra_matrix(matrix);
716 : edgomez 1.14 } else
717 : Isibaar 1.3 set_intra_matrix(get_default_intra_matrix());
718 : Isibaar 1.2
719 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* load_inter_quant_mat */
720 : Isibaar 1.1 {
721 : edgomez 1.14 uint8_t matrix[64];
722 : suxen_drol 1.22
723 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat\n");
724 : edgomez 1.14
725 : Isibaar 1.2 bs_get_matrix(bs, matrix);
726 :     set_inter_matrix(matrix);
727 : edgomez 1.14 } else
728 : Isibaar 1.3 set_inter_matrix(get_default_inter_matrix());
729 : Isibaar 1.1
730 : edgomez 1.14 if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) {
731 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported\n");
732 : Isibaar 1.1 return -1;
733 :     }
734 : Isibaar 1.2
735 : Isibaar 1.1 }
736 :    
737 : edgomez 1.14
738 :     if (vol_ver_id != 1) {
739 : edgomez 1.39.2.10 dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */
740 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"quarterpel %i\n", dec->quarterpel);
741 : Isibaar 1.26 }
742 :     else
743 : Isibaar 1.1 dec->quarterpel = 0;
744 : Isibaar 1.26
745 : Isibaar 1.1
746 : edgomez 1.38 dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */
747 :     if (!dec->complexity_estimation_disable)
748 : Isibaar 1.1 {
749 : edgomez 1.38 read_vol_complexity_estimation_header(bs, dec);
750 : Isibaar 1.1 }
751 :    
752 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* resync_marker_disable */
753 : Isibaar 1.1
754 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* data_partitioned */
755 : Isibaar 1.1 {
756 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "data_partitioned not supported\n");
757 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* reversible_vlc */
758 : Isibaar 1.1 }
759 :    
760 : edgomez 1.14 if (vol_ver_id != 1) {
761 : edgomez 1.38 dec->newpred_enable = BitstreamGetBit(bs);
762 : edgomez 1.39.2.10 if (dec->newpred_enable) /* newpred_enable */
763 : Isibaar 1.1 {
764 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "+ newpred_enable\n");
765 : edgomez 1.39.2.10 BitstreamSkip(bs, 2); /* requested_upstream_message_type */
766 :     BitstreamSkip(bs, 1); /* newpred_segment_type */
767 : Isibaar 1.1 }
768 : edgomez 1.38 dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */
769 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution_enable %i\n", dec->reduced_resolution_enable);
770 : edgomez 1.38 }
771 :     else
772 :     {
773 :     dec->newpred_enable = 0;
774 :     dec->reduced_resolution_enable = 0;
775 : Isibaar 1.1 }
776 : edgomez 1.14
777 : edgomez 1.38 dec->scalability = BitstreamGetBit(bs); /* scalability */
778 :     if (dec->scalability)
779 : Isibaar 1.1 {
780 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n");
781 : edgomez 1.38 BitstreamSkip(bs, 1); /* hierarchy_type */
782 :     BitstreamSkip(bs, 4); /* ref_layer_id */
783 :     BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */
784 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_n */
785 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_m */
786 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_n */
787 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_m */
788 :     BitstreamSkip(bs, 1); /* enhancement_type */
789 :     if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) {
790 :     BitstreamSkip(bs, 1); /* use_ref_shape */
791 :     BitstreamSkip(bs, 1); /* use_ref_texture */
792 :     BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */
793 :     BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */
794 :     BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */
795 :     BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */
796 :     }
797 : Isibaar 1.1 return -1;
798 :     }
799 : edgomez 1.39.2.10 } else /* dec->shape == BINARY_ONLY */
800 : Isibaar 1.1 {
801 : edgomez 1.14 if (vol_ver_id != 1) {
802 : edgomez 1.38 dec->scalability = BitstreamGetBit(bs); /* scalability */
803 :     if (dec->scalability)
804 : Isibaar 1.1 {
805 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n");
806 : edgomez 1.38 BitstreamSkip(bs, 4); /* ref_layer_id */
807 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_n */
808 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_m */
809 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_n */
810 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_m */
811 : Isibaar 1.1 return -1;
812 :     }
813 :     }
814 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* resync_marker_disable */
815 : Isibaar 1.1
816 :     }
817 :    
818 : edgomez 1.38 return (resize ? -3 : -2 ); /* VOL */
819 :    
820 : edgomez 1.14 } else if (start_code == GRPOFVOP_START_CODE) {
821 : suxen_drol 1.22
822 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<group_of_vop>\n");
823 : suxen_drol 1.22
824 : Isibaar 1.1 BitstreamSkip(bs, 32);
825 :     {
826 :     int hours, minutes, seconds;
827 : edgomez 1.14
828 : Isibaar 1.1 hours = BitstreamGetBits(bs, 5);
829 :     minutes = BitstreamGetBits(bs, 6);
830 :     READ_MARKER();
831 :     seconds = BitstreamGetBits(bs, 6);
832 : suxen_drol 1.22
833 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "time %ih%im%is\n", hours,minutes,seconds);
834 : Isibaar 1.1 }
835 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* closed_gov */
836 :     BitstreamSkip(bs, 1); /* broken_link */
837 : suxen_drol 1.22
838 : edgomez 1.14 } else if (start_code == VOP_START_CODE) {
839 : suxen_drol 1.22
840 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<vop>\n");
841 : suxen_drol 1.22
842 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* vop_start_code */
843 : Isibaar 1.1
844 : edgomez 1.39.2.10 coding_type = BitstreamGetBits(bs, 2); /* vop_coding_type */
845 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "coding_type %i\n", coding_type);
846 : Isibaar 1.1
847 : edgomez 1.39.2.10 /*********************** for decode B-frame time ***********************/
848 :     while (BitstreamGetBit(bs) != 0) /* time_base */
849 : chenm001 1.9 time_incr++;
850 : edgomez 1.14
851 : Isibaar 1.1 READ_MARKER();
852 : edgomez 1.14
853 :     if (dec->time_inc_bits) {
854 : edgomez 1.39.2.10 time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */
855 : chenm001 1.9 }
856 : suxen_drol 1.19
857 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "time_base %i\n", time_incr);
858 :     DPRINTF(XVID_DEBUG_HEADER, "time_increment %i\n", time_increment);
859 : suxen_drol 1.22
860 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_TIMECODE, "%c %i:%i\n",
861 : edgomez 1.38 coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S',
862 : suxen_drol 1.19 time_incr, time_increment);
863 :    
864 : edgomez 1.14 if (coding_type != B_VOP) {
865 :     dec->last_time_base = dec->time_base;
866 : chenm001 1.9 dec->time_base += time_incr;
867 : chl 1.25 dec->time = time_increment;
868 :    
869 : edgomez 1.39.2.10 #if 0
870 :     dec->time_base * dec->time_inc_resolution +
871 : edgomez 1.14 time_increment;
872 : edgomez 1.39.2.10 #endif
873 :     dec->time_pp = (uint32_t)
874 :     (dec->time_inc_resolution + dec->time - dec->last_non_b_time)%dec->time_inc_resolution;
875 : edgomez 1.14 dec->last_non_b_time = dec->time;
876 :     } else {
877 : chl 1.25 dec->time = time_increment;
878 : edgomez 1.39.2.10 #if 0
879 : edgomez 1.14 (dec->last_time_base +
880 : edgomez 1.38 time_incr) * dec->time_inc_resolution + time_increment;
881 : edgomez 1.39.2.10 #endif
882 : chl 1.24 dec->time_bp = (uint32_t)
883 : edgomez 1.38 (dec->time_inc_resolution + dec->last_non_b_time - dec->time)%dec->time_inc_resolution;
884 : Isibaar 1.1 }
885 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp);
886 :     DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp);
887 : Isibaar 1.1
888 :     READ_MARKER();
889 :    
890 : edgomez 1.39.2.10 if (!BitstreamGetBit(bs)) /* vop_coded */
891 : Isibaar 1.1 {
892 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "vop_coded==false\n");
893 : Isibaar 1.1 return N_VOP;
894 :     }
895 :    
896 : edgomez 1.38 if (dec->newpred_enable)
897 :     {
898 :     int vop_id;
899 :     int vop_id_for_prediction;
900 :    
901 :     vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
902 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id);
903 : edgomez 1.38 if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */
904 :     {
905 :     vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
906 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction);
907 : edgomez 1.38 }
908 :     READ_MARKER();
909 :     }
910 :    
911 :    
912 : Isibaar 1.1
913 : edgomez 1.39.2.10 /* fix a little bug by MinChen <chenm002@163.com> */
914 : edgomez 1.14 if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) &&
915 : edgomez 1.38 ( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) {
916 : edgomez 1.39.2.10 *rounding = BitstreamGetBit(bs); /* rounding_type */
917 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "rounding %i\n", *rounding);
918 : Isibaar 1.1 }
919 :    
920 : edgomez 1.38 if (dec->reduced_resolution_enable &&
921 :     dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR &&
922 :     (coding_type == P_VOP || coding_type == I_VOP)) {
923 :    
924 :     *reduced_resolution = BitstreamGetBit(bs);
925 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution %i\n", *reduced_resolution);
926 : edgomez 1.38 }
927 :     else
928 :     {
929 :     *reduced_resolution = 0;
930 :     }
931 : Isibaar 1.1
932 : edgomez 1.14 if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) {
933 : edgomez 1.38 if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) {
934 : edgomez 1.14
935 : edgomez 1.38 uint32_t width, height;
936 :     uint32_t horiz_mc_ref, vert_mc_ref;
937 : Isibaar 1.1
938 : edgomez 1.38 width = BitstreamGetBits(bs, 13);
939 :     READ_MARKER();
940 :     height = BitstreamGetBits(bs, 13);
941 :     READ_MARKER();
942 :     horiz_mc_ref = BitstreamGetBits(bs, 13);
943 :     READ_MARKER();
944 :     vert_mc_ref = BitstreamGetBits(bs, 13);
945 :     READ_MARKER();
946 : Isibaar 1.1
947 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width);
948 :     DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height);
949 :     DPRINTF(XVID_DEBUG_HEADER, "horiz_mc_ref %i\n", horiz_mc_ref);
950 :     DPRINTF(XVID_DEBUG_HEADER, "vert_mc_ref %i\n", vert_mc_ref);
951 : edgomez 1.38 }
952 :    
953 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* change_conv_ratio_disable */
954 :     if (BitstreamGetBit(bs)) /* vop_constant_alpha */
955 : Isibaar 1.1 {
956 : edgomez 1.39.2.10 BitstreamSkip(bs, 8); /* vop_constant_alpha_value */
957 : Isibaar 1.1 }
958 :     }
959 :    
960 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) {
961 : edgomez 1.14
962 : edgomez 1.38 if (!dec->complexity_estimation_disable)
963 :     {
964 :     read_vop_complexity_estimation_header(bs, dec, coding_type);
965 :     }
966 :    
967 : edgomez 1.39.2.10 /* intra_dc_vlc_threshold */
968 : edgomez 1.14 *intra_dc_threshold =
969 :     intra_dc_threshold_table[BitstreamGetBits(bs, 3)];
970 : Isibaar 1.1
971 : edgomez 1.38 dec->top_field_first = 0;
972 :     dec->alternate_vertical_scan = 0;
973 :    
974 : edgomez 1.14 if (dec->interlacing) {
975 : suxen_drol 1.22 dec->top_field_first = BitstreamGetBit(bs);
976 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "interlace top_field_first %i\n", dec->top_field_first);
977 : suxen_drol 1.22 dec->alternate_vertical_scan = BitstreamGetBit(bs);
978 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "interlace alternate_vertical_scan %i\n", dec->alternate_vertical_scan);
979 : suxen_drol 1.22
980 : h 1.4 }
981 : Isibaar 1.1 }
982 : edgomez 1.14
983 : edgomez 1.38 if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) {
984 :    
985 :     int i;
986 :    
987 :     for (i = 0 ; i < dec->sprite_warping_points; i++)
988 :     {
989 :     int length;
990 :     int x = 0, y = 0;
991 :    
992 :     /* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */
993 :     length = bs_get_spritetrajectory(bs);
994 :     if(length){
995 :     x= BitstreamGetBits(bs, length);
996 :     if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/
997 :     x = - (x ^ ((1 << length) - 1));
998 :     }
999 :     READ_MARKER();
1000 :    
1001 :     length = bs_get_spritetrajectory(bs);
1002 :     if(length){
1003 :     y = BitstreamGetBits(bs, length);
1004 :     if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/
1005 :     y = - (y ^ ((1 << length) - 1));
1006 :     }
1007 :     READ_MARKER();
1008 :    
1009 :     gmc_warp->duv[i].x = x;
1010 :     gmc_warp->duv[i].y = y;
1011 :    
1012 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", i, x, y);
1013 : edgomez 1.38 }
1014 :    
1015 :     if (dec->sprite_brightness_change)
1016 :     {
1017 : edgomez 1.39.2.10 /* XXX: brightness_change_factor() */
1018 : edgomez 1.38 }
1019 :     if (dec->sprite_enable == SPRITE_STATIC)
1020 :     {
1021 : edgomez 1.39.2.10 /* XXX: todo */
1022 : edgomez 1.38 }
1023 :    
1024 :     }
1025 :    
1026 : edgomez 1.39.2.10 if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) /* vop_quant */
1027 : Isibaar 1.10 *quant = 1;
1028 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant);
1029 : edgomez 1.14
1030 :     if (coding_type != I_VOP) {
1031 : edgomez 1.39.2.10 *fcode_forward = BitstreamGetBits(bs, 3); /* fcode_forward */
1032 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "fcode_forward %i\n", *fcode_forward);
1033 : Isibaar 1.1 }
1034 : edgomez 1.14
1035 :     if (coding_type == B_VOP) {
1036 : edgomez 1.39.2.10 *fcode_backward = BitstreamGetBits(bs, 3); /* fcode_backward */
1037 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "fcode_backward %i\n", *fcode_backward);
1038 : chenm001 1.9 }
1039 : edgomez 1.14 if (!dec->scalability) {
1040 :     if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) &&
1041 :     (coding_type != I_VOP)) {
1042 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* vop_shape_coding_type */
1043 : chenm001 1.9 }
1044 : Isibaar 1.1 }
1045 :     return coding_type;
1046 : suxen_drol 1.22
1047 : edgomez 1.14 } else if (start_code == USERDATA_START_CODE) {
1048 : edgomez 1.38 char tmp[256];
1049 :     int i, version, build;
1050 :     char packed;
1051 :    
1052 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* user_data_start_code */
1053 : edgomez 1.38
1054 :     tmp[0] = BitstreamShowBits(bs, 8);
1055 :    
1056 :     for(i = 1; i < 256; i++){
1057 :     tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF);
1058 :    
1059 :     if(tmp[i] == 0)
1060 :     break;
1061 :    
1062 :     BitstreamSkip(bs, 8);
1063 :     }
1064 : suxen_drol 1.22
1065 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s\n", tmp);
1066 : suxen_drol 1.22
1067 : edgomez 1.38 /* divx detection */
1068 :     i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed);
1069 :     if (i < 2)
1070 :     i = sscanf(tmp, "DivX%db%d%c", &version, &build, &packed);
1071 :    
1072 :     if (i >= 2)
1073 :     {
1074 :     dec->packed_mode = (i == 3 && packed == 'p');
1075 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "divx version=%i, build=%i packed=%i\n",
1076 : edgomez 1.38 version, build, dec->packed_mode);
1077 :     }
1078 : suxen_drol 1.22
1079 : edgomez 1.39.2.10 } else /* start_code == ? */
1080 : Isibaar 1.1 {
1081 : edgomez 1.14 if (BitstreamShowBits(bs, 24) == 0x000001) {
1082 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<unknown: %x>\n", BitstreamShowBits(bs, 32));
1083 : Isibaar 1.1 }
1084 :     BitstreamSkip(bs, 8);
1085 :     }
1086 :     }
1087 :     while ((BitstreamPos(bs) >> 3) < bs->length);
1088 :    
1089 : edgomez 1.39.2.10 #if 0
1090 :     DPRINTF("*** WARNING: no vop_start_code found");
1091 :     #endif
1092 : edgomez 1.14 return -1; /* ignore it */
1093 : Isibaar 1.1 }
1094 :    
1095 :    
1096 :     /* write custom quant matrix */
1097 :    
1098 : edgomez 1.14 static void
1099 :     bs_put_matrix(Bitstream * bs,
1100 :     const int16_t * matrix)
1101 : Isibaar 1.1 {
1102 :     int i, j;
1103 :     const int last = matrix[scan_tables[0][63]];
1104 :    
1105 : suxen_drol 1.18 for (j = 63; j > 0 && matrix[scan_tables[0][j - 1]] == last; j--);
1106 : Isibaar 1.1
1107 : edgomez 1.14 for (i = 0; i <= j; i++) {
1108 : Isibaar 1.1 BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8);
1109 :     }
1110 :    
1111 : edgomez 1.14 if (j < 63) {
1112 : Isibaar 1.1 BitstreamPutBits(bs, 0, 8);
1113 :     }
1114 :     }
1115 :    
1116 :    
1117 :     /*
1118 :     write vol header
1119 :     */
1120 : edgomez 1.14 void
1121 :     BitstreamWriteVolHeader(Bitstream * const bs,
1122 : suxen_drol 1.39.2.1 const MBParam * pParam)
1123 : Isibaar 1.1 {
1124 : edgomez 1.38 static const unsigned int vo_id = 0;
1125 :     static const unsigned int vol_id = 0;
1126 :     int vol_ver_id=1;
1127 : suxen_drol 1.39.2.5 int vol_type_ind=VIDOBJLAY_TYPE_SIMPLE;
1128 : edgomez 1.38
1129 : edgomez 1.39.2.6 if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) ||
1130 :     (pParam->vol_flags & XVID_VOL_GMC) ||
1131 :     (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE))
1132 : edgomez 1.38 vol_ver_id = 2;
1133 :    
1134 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) {
1135 : suxen_drol 1.39.2.5 vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE;
1136 :     }
1137 : edgomez 1.38
1138 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_QUARTERPEL) ||
1139 :     (pParam->vol_flags & XVID_VOL_GMC)) {
1140 : suxen_drol 1.39.2.5 vol_type_ind = VIDOBJLAY_TYPE_ASP;
1141 :     }
1142 : edgomez 1.38
1143 : edgomez 1.39.2.10 /* visual_object_sequence_start_code */
1144 :     #if 0
1145 :     BitstreamPad(bs);
1146 :     #endif
1147 :    
1148 :     /*
1149 :     * no padding here, anymore. You have to make sure that you are
1150 :     * byte aligned, and that always 1-8 padding bits have been written
1151 :     */
1152 : edgomez 1.38
1153 : suxen_drol 1.39.2.7 if (pParam->profile) {
1154 :     BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32);
1155 :     BitstreamPutBits(bs, pParam->profile, 8);
1156 :     }
1157 : edgomez 1.38
1158 : edgomez 1.39.2.10 /* visual_object_start_code */
1159 : edgomez 1.38 BitstreamPad(bs);
1160 :     BitstreamPutBits(bs, VISOBJ_START_CODE, 32);
1161 : edgomez 1.39.2.10 BitstreamPutBits(bs, 0, 1); /* is_visual_object_identifier */
1162 :     BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); /* visual_object_type */
1163 : edgomez 1.38
1164 : edgomez 1.39.2.10 /* video object_start_code & vo_id */
1165 : edgomez 1.14 BitstreamPad(bs);
1166 : edgomez 1.38 BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32);
1167 : Isibaar 1.1
1168 : edgomez 1.39.2.10 /* video_object_layer_start_code & vol_id */
1169 : edgomez 1.38 BitstreamPad(bs);
1170 :     BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32);
1171 : Isibaar 1.1
1172 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* random_accessible_vol */
1173 :     BitstreamPutBits(bs, vol_type_ind, 8); /* video_object_type_indication */
1174 : suxen_drol 1.12
1175 : edgomez 1.38 if (vol_ver_id == 1)
1176 :     {
1177 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */
1178 : edgomez 1.38 }
1179 :     else
1180 :     {
1181 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* is_object_layer_identified */
1182 :     BitstreamPutBits(bs, vol_ver_id, 4); /* vol_ver_id == 2 */
1183 :     BitstreamPutBits(bs, 4, 3); /* vol_ver_priority (1==lowest, 7==highest) ?? */
1184 : edgomez 1.38 }
1185 : chl 1.28
1186 : edgomez 1.39.2.10 BitstreamPutBits(bs, 1, 4); /* aspect_ratio_info (1=1:1) */
1187 : edgomez 1.31
1188 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* vol_control_parameters */
1189 :     BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */
1190 : suxen_drol 1.12
1191 : edgomez 1.38 if (pParam->max_bframes > 0) {
1192 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* low_delay */
1193 : edgomez 1.38 } else
1194 :     {
1195 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* low_delay */
1196 : edgomez 1.38 }
1197 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* vbv_parameters (0=not given) */
1198 : edgomez 1.38
1199 : edgomez 1.39.2.10 BitstreamPutBits(bs, 0, 2); /* video_object_layer_shape (0=rectangular) */
1200 : Isibaar 1.1
1201 :     WRITE_MARKER();
1202 : edgomez 1.14
1203 : edgomez 1.39.2.10 /*
1204 :     * time_inc_resolution; ignored by current decore versions
1205 :     * eg. 2fps res=2 inc=1
1206 :     * 25fps res=25 inc=1
1207 :     * 29.97fps res=30000 inc=1001
1208 : edgomez 1.14 */
1209 : suxen_drol 1.11 BitstreamPutBits(bs, pParam->fbase, 16);
1210 : edgomez 1.31
1211 : Isibaar 1.1 WRITE_MARKER();
1212 :    
1213 : suxen_drol 1.39.2.3 if (pParam->fincr>0) {
1214 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */
1215 :     BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); /* fixed_vop_time_increment */
1216 : suxen_drol 1.39.2.3 }else{
1217 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */
1218 : suxen_drol 1.39.2.3 }
1219 : Isibaar 1.1
1220 :     WRITE_MARKER();
1221 : edgomez 1.39.2.10 BitstreamPutBits(bs, pParam->width, 13); /* width */
1222 : Isibaar 1.1 WRITE_MARKER();
1223 : edgomez 1.39.2.10 BitstreamPutBits(bs, pParam->height, 13); /* height */
1224 : Isibaar 1.1 WRITE_MARKER();
1225 : edgomez 1.14
1226 : edgomez 1.39.2.10 BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_INTERLACING); /* interlace */
1227 :     BitstreamPutBit(bs, 1); /* obmc_disable (overlapped block motion compensation) */
1228 : edgomez 1.38
1229 :     if (vol_ver_id != 1)
1230 : edgomez 1.39.2.6 { if ((pParam->vol_flags & XVID_VOL_GMC))
1231 : edgomez 1.39.2.10 { BitstreamPutBits(bs, 2, 2); /* sprite_enable=='GMC' */
1232 :     BitstreamPutBits(bs, 2, 6); /* no_of_sprite_warping_points */
1233 :     BitstreamPutBits(bs, 3, 2); /* sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 */
1234 :     BitstreamPutBit(bs, 0); /* sprite_brightness_change (not supported) */
1235 :    
1236 :     /*
1237 :     * currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3
1238 :     * for DivX5 compatability
1239 :     */
1240 : edgomez 1.38
1241 :     } else
1242 : edgomez 1.39.2.10 BitstreamPutBits(bs, 0, 2); /* sprite_enable==off */
1243 : edgomez 1.38 }
1244 :     else
1245 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* sprite_enable==off */
1246 : edgomez 1.38
1247 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* not_8_bit */
1248 : Isibaar 1.1
1249 : edgomez 1.39.2.10 /* quant_type 0=h.263 1=mpeg4(quantizer tables) */
1250 : edgomez 1.39.2.6 BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT);
1251 : edgomez 1.14
1252 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) {
1253 : edgomez 1.39.2.10 BitstreamPutBit(bs, get_intra_matrix_status()); /* load_intra_quant_mat */
1254 : edgomez 1.14 if (get_intra_matrix_status()) {
1255 : Isibaar 1.2 bs_put_matrix(bs, get_intra_matrix());
1256 : Isibaar 1.1 }
1257 :    
1258 : edgomez 1.39.2.10 BitstreamPutBit(bs, get_inter_matrix_status()); /* load_inter_quant_mat */
1259 : edgomez 1.14 if (get_inter_matrix_status()) {
1260 : Isibaar 1.2 bs_put_matrix(bs, get_inter_matrix());
1261 : Isibaar 1.1 }
1262 :    
1263 :     }
1264 :    
1265 : edgomez 1.38 if (vol_ver_id != 1) {
1266 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_QUARTERPEL))
1267 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* quarterpel */
1268 : edgomez 1.38 else
1269 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* no quarterpel */
1270 : edgomez 1.38 }
1271 :    
1272 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* complexity_estimation_disable */
1273 :     BitstreamPutBit(bs, 1); /* resync_marker_disable */
1274 :     BitstreamPutBit(bs, 0); /* data_partitioned */
1275 : edgomez 1.38
1276 :     if (vol_ver_id != 1)
1277 :     {
1278 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* newpred_enable */
1279 : edgomez 1.38
1280 : edgomez 1.39.2.6 BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0);
1281 : edgomez 1.38 /* reduced_resolution_vop_enabled */
1282 :     }
1283 :    
1284 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* scalability */
1285 : edgomez 1.38
1286 :     /* fake divx5 id, to ensure compatibility with divx5 decoder */
1287 : suxen_drol 1.39.2.1 #define DIVX5_ID "DivX000b000p"
1288 : edgomez 1.39.2.6 if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) {
1289 : edgomez 1.38 BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID));
1290 :     }
1291 :    
1292 :     /* xvid id */
1293 :     #define XVID_ID "XviD" XVID_BS_VERSION
1294 :     BitstreamWriteUserData(bs, XVID_ID, strlen(XVID_ID));
1295 : Isibaar 1.1 }
1296 :    
1297 :    
1298 :     /*
1299 :     write vop header
1300 :     */
1301 : edgomez 1.14 void
1302 : edgomez 1.38 BitstreamWriteVopHeader(
1303 :     Bitstream * const bs,
1304 : edgomez 1.14 const MBParam * pParam,
1305 : edgomez 1.38 const FRAMEINFO * const frame,
1306 : suxen_drol 1.17 int vop_coded)
1307 : Isibaar 1.1 {
1308 : suxen_drol 1.8 uint32_t i;
1309 : chl 1.28
1310 : edgomez 1.39.2.10 #if 0
1311 :     BitstreamPad(bs);
1312 :     #endif
1313 :    
1314 :     /*
1315 :     * no padding here, anymore. You have to make sure that you are
1316 :     * byte aligned, and that always 1-8 padding bits have been written
1317 :     */
1318 : edgomez 1.38
1319 : edgomez 1.14 BitstreamPutBits(bs, VOP_START_CODE, 32);
1320 :    
1321 :     BitstreamPutBits(bs, frame->coding_type, 2);
1322 : edgomez 1.39.2.10 #if 0
1323 :     DPRINTF(XVID_DEBUG_HEADER, "coding_type = %i\n", frame->coding_type);
1324 :     #endif
1325 : Isibaar 1.1
1326 : chl 1.28 for (i = 0; i < frame->seconds; i++) {
1327 :     BitstreamPutBit(bs, 1);
1328 :     }
1329 :     BitstreamPutBit(bs, 0);
1330 : Isibaar 1.1
1331 :     WRITE_MARKER();
1332 :    
1333 : edgomez 1.39.2.10 /* time_increment: value=nth_of_sec, nbits = log2(resolution) */
1334 : edgomez 1.38
1335 : edgomez 1.14 BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase));
1336 : edgomez 1.39.2.10 #if 0
1337 :     DPRINTF("[%i:%i] %c",
1338 :     frame->seconds, frame->ticks,
1339 :     frame->coding_type == I_VOP ? 'I' :
1340 :     frame->coding_type == P_VOP ? 'P' :
1341 :     frame->coding_type == S_VOP ? 'S' : 'B');
1342 :     #endif
1343 : Isibaar 1.1
1344 :     WRITE_MARKER();
1345 :    
1346 : suxen_drol 1.17 if (!vop_coded) {
1347 :     BitstreamPutBits(bs, 0, 1);
1348 :     return;
1349 :     }
1350 :    
1351 : edgomez 1.39.2.10 BitstreamPutBits(bs, 1, 1); /* vop_coded */
1352 : Isibaar 1.1
1353 : edgomez 1.38 if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) )
1354 : suxen_drol 1.7 BitstreamPutBits(bs, frame->rounding_type, 1);
1355 : Isibaar 1.1
1356 : edgomez 1.39.2.6 if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE))
1357 :     BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_REDUCED)?1:0);
1358 : edgomez 1.38
1359 : edgomez 1.39.2.10 BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */
1360 : edgomez 1.14
1361 : edgomez 1.39.2.6 if ((frame->vol_flags & XVID_VOL_INTERLACING)) {
1362 :     BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_TOPFIELDFIRST));
1363 :     BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_ALTERNATESCAN));
1364 : edgomez 1.38 }
1365 :    
1366 :     if (frame->coding_type == S_VOP) {
1367 : edgomez 1.39.2.10 if (1) { /* no_of_sprite_warping_points>=1 (we use 2!) */
1368 : edgomez 1.38 int k;
1369 :     for (k=0;k<2;k++)
1370 :     {
1371 : edgomez 1.39.2.10 bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); /* du[k] */
1372 : edgomez 1.38 WRITE_MARKER();
1373 :    
1374 : edgomez 1.39.2.10 bs_put_spritetrajectory(bs, frame->warp.duv[k].y ); /* dv[k] */
1375 : edgomez 1.38 WRITE_MARKER();
1376 :    
1377 : edgomez 1.39.2.6 if ((frame->vol_flags & XVID_VOL_QUARTERPEL))
1378 : edgomez 1.38 {
1379 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i) *QPEL*\n", k, frame->warp.duv[k].x/2, frame->warp.duv[k].y/2);
1380 : edgomez 1.38 }
1381 :     else
1382 :     {
1383 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", k, frame->warp.duv[k].x, frame->warp.duv[k].y);
1384 : edgomez 1.38 }
1385 :     }
1386 :     }
1387 : h 1.4 }
1388 : edgomez 1.38
1389 : h 1.4
1390 : edgomez 1.39.2.10 #if 0
1391 :     DPRINTF(XVID_DEBUG_HEADER, "quant = %i\n", frame->quant);
1392 :     #endif
1393 : edgomez 1.38
1394 : edgomez 1.39.2.10 BitstreamPutBits(bs, frame->quant, 5); /* quantizer */
1395 : edgomez 1.14
1396 : suxen_drol 1.7 if (frame->coding_type != I_VOP)
1397 : edgomez 1.39.2.10 BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */
1398 : suxen_drol 1.8
1399 :     if (frame->coding_type == B_VOP)
1400 : edgomez 1.39.2.10 BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */
1401 : edgomez 1.38
1402 :     }
1403 :    
1404 :     void
1405 :     BitstreamWriteUserData(Bitstream * const bs,
1406 :     uint8_t * data,
1407 :     const int length)
1408 :     {
1409 :     int i;
1410 :    
1411 :     BitstreamPad(bs);
1412 :     BitstreamPutBits(bs, USERDATA_START_CODE, 32);
1413 :    
1414 :     for (i = 0; i < length; i++) {
1415 :     BitstreamPutBits(bs, data[i], 8);
1416 :     }
1417 : suxen_drol 1.17
1418 : chl 1.24 }

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