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Revision 1.39.2.11 - (view) (download)

1 : edgomez 1.39.2.11 /*****************************************************************************
2 :     *
3 :     * XVID MPEG-4 VIDEO CODEC
4 :     * - Bitstream reader/writer -
5 :     *
6 :     * Copyright (C) 2001-2003 Peter Ross <pross@xvid.org>
7 :     * 2003 Cristoph Lampert <gruel@web.de>
8 :     *
9 :     * This program is free software ; you can redistribute it and/or modify
10 :     * it under the terms of the GNU General Public License as published by
11 :     * the Free Software Foundation ; either version 2 of the License, or
12 :     * (at your option) any later version.
13 :     *
14 :     * This program is distributed in the hope that it will be useful,
15 :     * but WITHOUT ANY WARRANTY ; without even the implied warranty of
16 :     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 :     * GNU General Public License for more details.
18 :     *
19 :     * You should have received a copy of the GNU General Public License
20 :     * along with this program ; if not, write to the Free Software
21 :     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 :     *
23 :     * $Id$
24 :     *
25 :     ****************************************************************************/
26 : edgomez 1.38
27 :     #include <string.h>
28 :     #include <stdio.h>
29 : Isibaar 1.1
30 :     #include "bitstream.h"
31 :     #include "zigzag.h"
32 : Isibaar 1.2 #include "../quant/quant_matrix.h"
33 : edgomez 1.38 #include "mbcoding.h"
34 : Isibaar 1.1
35 : chenm001 1.6
36 : edgomez 1.14 static uint32_t __inline
37 :     log2bin(uint32_t value)
38 : Isibaar 1.1 {
39 : chenm001 1.6 /* Changed by Chenm001 */
40 : suxen_drol 1.34 #if !defined(_MSC_VER)
41 : Isibaar 1.1 int n = 0;
42 : edgomez 1.14
43 :     while (value) {
44 : Isibaar 1.1 value >>= 1;
45 :     n++;
46 :     }
47 :     return n;
48 : chenm001 1.6 #else
49 : edgomez 1.14 __asm {
50 : suxen_drol 1.15 bsr eax, value
51 :     inc eax
52 :     }
53 : chenm001 1.6 #endif
54 : Isibaar 1.1 }
55 :    
56 :    
57 : edgomez 1.14 static const uint32_t intra_dc_threshold_table[] = {
58 :     32, /* never use */
59 : Isibaar 1.1 13,
60 :     15,
61 :     17,
62 :     19,
63 :     21,
64 :     23,
65 :     1,
66 :     };
67 :    
68 :    
69 : edgomez 1.14 void
70 :     bs_get_matrix(Bitstream * bs,
71 :     uint8_t * matrix)
72 :     {
73 :     int i = 0;
74 :     int last, value = 0;
75 :    
76 :     do {
77 :     last = value;
78 :     value = BitstreamGetBits(bs, 8);
79 :     matrix[scan_tables[0][i++]] = value;
80 :     }
81 :     while (value != 0 && i < 64);
82 : edgomez 1.39.2.10 i--; /* fix little bug at coeff not full */
83 : edgomez 1.14
84 :     while (i < 64) {
85 :     matrix[scan_tables[0][i++]] = last;
86 :     }
87 :     }
88 : Isibaar 1.2
89 : suxen_drol 1.21
90 :    
91 : edgomez 1.39.2.10 /*
92 :     * for PVOP addbits == fcode - 1
93 :     * for BVOP addbits == max(fcode,bcode) - 1
94 :     * returns mbpos
95 :     */
96 : suxen_drol 1.21 int
97 : edgomez 1.38 read_video_packet_header(Bitstream *bs,
98 :     DECODER * dec,
99 :     const int addbits,
100 :     int * quant,
101 :     int * fcode_forward,
102 :     int * fcode_backward,
103 :     int * intra_dc_threshold)
104 : suxen_drol 1.21 {
105 : edgomez 1.38 int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits;
106 :     int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1);
107 : suxen_drol 1.21 int mbnum;
108 : edgomez 1.38 int hec = 0;
109 : suxen_drol 1.21
110 :     BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs));
111 : edgomez 1.38 BitstreamSkip(bs, startcode_bits);
112 : suxen_drol 1.21
113 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<video_packet_header>\n");
114 : suxen_drol 1.22
115 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR)
116 :     {
117 :     hec = BitstreamGetBit(bs); /* header_extension_code */
118 :     if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */))
119 :     {
120 :     BitstreamSkip(bs, 13); /* vop_width */
121 :     READ_MARKER();
122 :     BitstreamSkip(bs, 13); /* vop_height */
123 :     READ_MARKER();
124 :     BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */
125 :     READ_MARKER();
126 :     BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */
127 :     READ_MARKER();
128 :     }
129 :     }
130 :    
131 :     mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */
132 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "mbnum %i\n", mbnum);
133 : suxen_drol 1.21
134 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY)
135 :     {
136 :     *quant = BitstreamGetBits(bs, dec->quant_bits); /* quant_scale */
137 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant);
138 : edgomez 1.38 }
139 : suxen_drol 1.21
140 : edgomez 1.38 if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR)
141 :     hec = BitstreamGetBit(bs); /* header_extension_code */
142 : suxen_drol 1.21
143 :    
144 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "header_extension_code %i\n", hec);
145 : edgomez 1.38 if (hec)
146 :     {
147 :     int time_base;
148 :     int time_increment;
149 :     int coding_type;
150 :    
151 :     for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */
152 :     READ_MARKER();
153 :     if (dec->time_inc_bits)
154 :     time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */
155 :     READ_MARKER();
156 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"time %i:%i\n", time_base, time_increment);
157 : edgomez 1.38
158 :     coding_type = BitstreamGetBits(bs, 2);
159 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"coding_type %i\n", coding_type);
160 : edgomez 1.38
161 :     if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR)
162 :     {
163 :     BitstreamSkip(bs, 1); /* change_conv_ratio_disable */
164 :     if (coding_type != I_VOP)
165 :     BitstreamSkip(bs, 1); /* vop_shape_coding_type */
166 :     }
167 :    
168 :     if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY)
169 :     {
170 :     *intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)];
171 :    
172 :     if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP &&
173 :     dec->sprite_warping_points > 0)
174 :     {
175 : edgomez 1.39.2.10 /* TODO: sprite trajectory */
176 : edgomez 1.38 }
177 :     if (dec->reduced_resolution_enable &&
178 :     dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR &&
179 :     (coding_type == P_VOP || coding_type == I_VOP))
180 :     {
181 :     BitstreamSkip(bs, 1); /* XXX: vop_reduced_resolution */
182 :     }
183 :    
184 :     if (coding_type != I_VOP && fcode_forward)
185 :     {
186 :     *fcode_forward = BitstreamGetBits(bs, 3);
187 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"fcode_forward %i\n", *fcode_forward);
188 : edgomez 1.38 }
189 :    
190 :     if (coding_type == B_VOP && fcode_backward)
191 :     {
192 :     *fcode_backward = BitstreamGetBits(bs, 3);
193 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward);
194 : edgomez 1.38 }
195 :     }
196 :    
197 :     }
198 :    
199 :     if (dec->newpred_enable)
200 :     {
201 :     int vop_id;
202 :     int vop_id_for_prediction;
203 :    
204 :     vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
205 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id);
206 : edgomez 1.38 if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */
207 :     {
208 :     vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
209 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction);
210 : edgomez 1.38 }
211 :     READ_MARKER();
212 :     }
213 : suxen_drol 1.21
214 :     return mbnum;
215 :     }
216 :    
217 :    
218 :    
219 : edgomez 1.38
220 :     /* vol estimation header */
221 :     static void
222 :     read_vol_complexity_estimation_header(Bitstream * bs, DECODER * dec)
223 :     {
224 :     ESTIMATION * e = &dec->estimation;
225 :    
226 :     e->method = BitstreamGetBits(bs, 2); /* estimation_method */
227 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"+ complexity_estimation_header; method=%i\n", e->method);
228 : edgomez 1.38
229 :     if (e->method == 0 || e->method == 1)
230 :     {
231 :     if (!BitstreamGetBit(bs)) /* shape_complexity_estimation_disable */
232 :     {
233 :     e->opaque = BitstreamGetBit(bs); /* opaque */
234 :     e->transparent = BitstreamGetBit(bs); /* transparent */
235 :     e->intra_cae = BitstreamGetBit(bs); /* intra_cae */
236 :     e->inter_cae = BitstreamGetBit(bs); /* inter_cae */
237 :     e->no_update = BitstreamGetBit(bs); /* no_update */
238 :     e->upsampling = BitstreamGetBit(bs); /* upsampling */
239 :     }
240 :    
241 :     if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_1_disable */
242 :     {
243 :     e->intra_blocks = BitstreamGetBit(bs); /* intra_blocks */
244 :     e->inter_blocks = BitstreamGetBit(bs); /* inter_blocks */
245 :     e->inter4v_blocks = BitstreamGetBit(bs); /* inter4v_blocks */
246 :     e->not_coded_blocks = BitstreamGetBit(bs); /* not_coded_blocks */
247 :     }
248 :     }
249 :    
250 :     READ_MARKER();
251 :    
252 :     if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_2_disable */
253 :     {
254 :     e->dct_coefs = BitstreamGetBit(bs); /* dct_coefs */
255 :     e->dct_lines = BitstreamGetBit(bs); /* dct_lines */
256 :     e->vlc_symbols = BitstreamGetBit(bs); /* vlc_symbols */
257 :     e->vlc_bits = BitstreamGetBit(bs); /* vlc_bits */
258 :     }
259 :    
260 :     if (!BitstreamGetBit(bs)) /* motion_compensation_complexity_disable */
261 :     {
262 :     e->apm = BitstreamGetBit(bs); /* apm */
263 :     e->npm = BitstreamGetBit(bs); /* npm */
264 :     e->interpolate_mc_q = BitstreamGetBit(bs); /* interpolate_mc_q */
265 :     e->forw_back_mc_q = BitstreamGetBit(bs); /* forw_back_mc_q */
266 :     e->halfpel2 = BitstreamGetBit(bs); /* halfpel2 */
267 :     e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */
268 :     }
269 :    
270 :     READ_MARKER();
271 :    
272 :     if (e->method == 1)
273 :     {
274 :     if (!BitstreamGetBit(bs)) /* version2_complexity_estimation_disable */
275 :     {
276 :     e->sadct = BitstreamGetBit(bs); /* sadct */
277 :     e->quarterpel = BitstreamGetBit(bs); /* quarterpel */
278 :     }
279 :     }
280 :     }
281 :    
282 :    
283 :     /* vop estimation header */
284 :     static void
285 :     read_vop_complexity_estimation_header(Bitstream * bs, DECODER * dec, int coding_type)
286 :     {
287 :     ESTIMATION * e = &dec->estimation;
288 :    
289 :     if (e->method == 0 || e->method == 1)
290 :     {
291 :     if (coding_type == I_VOP) {
292 :     if (e->opaque) BitstreamSkip(bs, 8); /* dcecs_opaque */
293 :     if (e->transparent) BitstreamSkip(bs, 8); /* */
294 :     if (e->intra_cae) BitstreamSkip(bs, 8); /* */
295 :     if (e->inter_cae) BitstreamSkip(bs, 8); /* */
296 :     if (e->no_update) BitstreamSkip(bs, 8); /* */
297 :     if (e->upsampling) BitstreamSkip(bs, 8); /* */
298 :     if (e->intra_blocks) BitstreamSkip(bs, 8); /* */
299 :     if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */
300 :     if (e->dct_coefs) BitstreamSkip(bs, 8); /* */
301 :     if (e->dct_lines) BitstreamSkip(bs, 8); /* */
302 :     if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */
303 :     if (e->vlc_bits) BitstreamSkip(bs, 8); /* */
304 :     if (e->sadct) BitstreamSkip(bs, 8); /* */
305 :     }
306 :    
307 :     if (coding_type == P_VOP) {
308 :     if (e->opaque) BitstreamSkip(bs, 8); /* */
309 :     if (e->transparent) BitstreamSkip(bs, 8); /* */
310 :     if (e->intra_cae) BitstreamSkip(bs, 8); /* */
311 :     if (e->inter_cae) BitstreamSkip(bs, 8); /* */
312 :     if (e->no_update) BitstreamSkip(bs, 8); /* */
313 :     if (e->upsampling) BitstreamSkip(bs, 8); /* */
314 :     if (e->intra_blocks) BitstreamSkip(bs, 8); /* */
315 :     if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */
316 :     if (e->dct_coefs) BitstreamSkip(bs, 8); /* */
317 :     if (e->dct_lines) BitstreamSkip(bs, 8); /* */
318 :     if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */
319 :     if (e->vlc_bits) BitstreamSkip(bs, 8); /* */
320 :     if (e->inter_blocks) BitstreamSkip(bs, 8); /* */
321 :     if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */
322 :     if (e->apm) BitstreamSkip(bs, 8); /* */
323 :     if (e->npm) BitstreamSkip(bs, 8); /* */
324 :     if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */
325 :     if (e->halfpel2) BitstreamSkip(bs, 8); /* */
326 :     if (e->halfpel4) BitstreamSkip(bs, 8); /* */
327 :     if (e->sadct) BitstreamSkip(bs, 8); /* */
328 :     if (e->quarterpel) BitstreamSkip(bs, 8); /* */
329 :     }
330 :     if (coding_type == B_VOP) {
331 :     if (e->opaque) BitstreamSkip(bs, 8); /* */
332 :     if (e->transparent) BitstreamSkip(bs, 8); /* */
333 :     if (e->intra_cae) BitstreamSkip(bs, 8); /* */
334 :     if (e->inter_cae) BitstreamSkip(bs, 8); /* */
335 :     if (e->no_update) BitstreamSkip(bs, 8); /* */
336 :     if (e->upsampling) BitstreamSkip(bs, 8); /* */
337 :     if (e->intra_blocks) BitstreamSkip(bs, 8); /* */
338 :     if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */
339 :     if (e->dct_coefs) BitstreamSkip(bs, 8); /* */
340 :     if (e->dct_lines) BitstreamSkip(bs, 8); /* */
341 :     if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */
342 :     if (e->vlc_bits) BitstreamSkip(bs, 8); /* */
343 :     if (e->inter_blocks) BitstreamSkip(bs, 8); /* */
344 :     if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */
345 :     if (e->apm) BitstreamSkip(bs, 8); /* */
346 :     if (e->npm) BitstreamSkip(bs, 8); /* */
347 :     if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */
348 :     if (e->halfpel2) BitstreamSkip(bs, 8); /* */
349 :     if (e->halfpel4) BitstreamSkip(bs, 8); /* */
350 :     if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */
351 :     if (e->sadct) BitstreamSkip(bs, 8); /* */
352 :     if (e->quarterpel) BitstreamSkip(bs, 8); /* */
353 :     }
354 :    
355 :     if (coding_type == S_VOP && dec->sprite_enable == SPRITE_STATIC) {
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->interpolate_mc_q) BitstreamSkip(bs, 8); /* */
370 :     }
371 :     }
372 :     }
373 :    
374 :    
375 :    
376 :    
377 :    
378 : Isibaar 1.1 /*
379 :     decode headers
380 :     returns coding_type, or -1 if error
381 :     */
382 :    
383 : suxen_drol 1.22 #define VIDOBJ_START_CODE_MASK 0x0000001f
384 :     #define VIDOBJLAY_START_CODE_MASK 0x0000000f
385 :    
386 : edgomez 1.14 int
387 :     BitstreamReadHeaders(Bitstream * bs,
388 :     DECODER * dec,
389 :     uint32_t * rounding,
390 : edgomez 1.38 uint32_t * reduced_resolution,
391 : edgomez 1.14 uint32_t * quant,
392 :     uint32_t * fcode_forward,
393 :     uint32_t * fcode_backward,
394 : edgomez 1.38 uint32_t * intra_dc_threshold,
395 :     WARPPOINTS *gmc_warp)
396 : Isibaar 1.1 {
397 :     uint32_t vol_ver_id;
398 :     uint32_t coding_type;
399 :     uint32_t start_code;
400 : edgomez 1.14 uint32_t time_incr = 0;
401 : edgomez 1.39 int32_t time_increment = 0;
402 : edgomez 1.38 int resize = 0;
403 : chenm001 1.9
404 : edgomez 1.14 do {
405 : edgomez 1.38
406 : Isibaar 1.1 BitstreamByteAlign(bs);
407 :     start_code = BitstreamShowBits(bs, 32);
408 :    
409 : edgomez 1.14 if (start_code == VISOBJSEQ_START_CODE) {
410 : suxen_drol 1.22
411 :     int profile;
412 :    
413 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object_sequence>\n");
414 : suxen_drol 1.22
415 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* visual_object_sequence_start_code */
416 :     profile = BitstreamGetBits(bs, 8); /* profile_and_level_indication */
417 : suxen_drol 1.22
418 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "profile_and_level_indication %i\n", profile);
419 : suxen_drol 1.22
420 : edgomez 1.14 } else if (start_code == VISOBJSEQ_STOP_CODE) {
421 : suxen_drol 1.22
422 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* visual_object_sequence_stop_code */
423 : suxen_drol 1.22
424 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n");
425 : suxen_drol 1.22
426 : edgomez 1.14 } else if (start_code == VISOBJ_START_CODE) {
427 : edgomez 1.38 int visobj_ver_id;
428 : suxen_drol 1.22
429 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n");
430 : suxen_drol 1.22
431 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* visual_object_start_code */
432 :     if (BitstreamGetBit(bs)) /* is_visual_object_identified */
433 : Isibaar 1.1 {
434 : edgomez 1.39.2.10 visobj_ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */
435 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", visobj_ver_id);
436 : edgomez 1.39.2.10 BitstreamSkip(bs, 3); /* visual_object_priority */
437 : edgomez 1.14 } else {
438 : edgomez 1.38 visobj_ver_id = 1;
439 : Isibaar 1.1 }
440 :    
441 : edgomez 1.39.2.10 if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */
442 : Isibaar 1.1 {
443 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "visual_object_type != video\n");
444 : Isibaar 1.1 return -1;
445 :     }
446 :     BitstreamSkip(bs, 4);
447 :    
448 : edgomez 1.39.2.10 /* video_signal_type */
449 : Isibaar 1.1
450 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* video_signal_type */
451 : Isibaar 1.1 {
452 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"+ video_signal_type\n");
453 : edgomez 1.39.2.10 BitstreamSkip(bs, 3); /* video_format */
454 :     BitstreamSkip(bs, 1); /* video_range */
455 :     if (BitstreamGetBit(bs)) /* color_description */
456 : Isibaar 1.1 {
457 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"+ color_description");
458 : edgomez 1.39.2.10 BitstreamSkip(bs, 8); /* color_primaries */
459 :     BitstreamSkip(bs, 8); /* transfer_characteristics */
460 :     BitstreamSkip(bs, 8); /* matrix_coefficients */
461 : Isibaar 1.1 }
462 :     }
463 : suxen_drol 1.22 } else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) {
464 :    
465 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<video_object>\n");
466 :     DPRINTF(XVID_DEBUG_HEADER, "vo id %i\n", start_code & VIDOBJ_START_CODE_MASK);
467 : suxen_drol 1.22
468 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* video_object_start_code */
469 : suxen_drol 1.22
470 :     } else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) {
471 :    
472 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<video_object_layer>\n");
473 :     DPRINTF(XVID_DEBUG_HEADER, "vol id %i\n", start_code & VIDOBJLAY_START_CODE_MASK);
474 : suxen_drol 1.22
475 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* video_object_layer_start_code */
476 :     BitstreamSkip(bs, 1); /* random_accessible_vol */
477 : Isibaar 1.1
478 : edgomez 1.39.2.10 BitstreamSkip(bs, 8); /* video_object_type_indication */
479 : Isibaar 1.1
480 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* is_object_layer_identifier */
481 : Isibaar 1.1 {
482 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "+ is_object_layer_identifier\n");
483 : edgomez 1.39.2.10 vol_ver_id = BitstreamGetBits(bs, 4); /* video_object_layer_verid */
484 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id);
485 : edgomez 1.39.2.10 BitstreamSkip(bs, 3); /* video_object_layer_priority */
486 : edgomez 1.14 } else {
487 : Isibaar 1.1 vol_ver_id = 1;
488 :     }
489 :    
490 : edgomez 1.38 dec->aspect_ratio = BitstreamGetBits(bs, 4);
491 :    
492 : edgomez 1.39.2.10 if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */
493 : Isibaar 1.1 {
494 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "+ aspect_ratio_info\n");
495 : edgomez 1.39.2.10 dec->par_width = BitstreamGetBits(bs, 8); /* par_width */
496 :     dec->par_height = BitstreamGetBits(bs, 8); /* par_height */
497 : Isibaar 1.1 }
498 :    
499 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* vol_control_parameters */
500 : Isibaar 1.1 {
501 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "+ vol_control_parameters\n");
502 : edgomez 1.39.2.10 BitstreamSkip(bs, 2); /* chroma_format */
503 :     dec->low_delay = BitstreamGetBit(bs); /* low_delay */
504 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "low_delay %i\n", dec->low_delay);
505 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* vbv_parameters */
506 : Isibaar 1.1 {
507 : edgomez 1.38 unsigned int bitrate;
508 :     unsigned int buffer_size;
509 :     unsigned int occupancy;
510 :    
511 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"+ vbv_parameters\n");
512 : edgomez 1.38
513 : edgomez 1.39.2.10 bitrate = BitstreamGetBits(bs,15) << 15; /* first_half_bit_rate */
514 : Isibaar 1.1 READ_MARKER();
515 : edgomez 1.39.2.10 bitrate |= BitstreamGetBits(bs,15); /* latter_half_bit_rate */
516 : Isibaar 1.1 READ_MARKER();
517 : edgomez 1.38
518 : edgomez 1.39.2.10 buffer_size = BitstreamGetBits(bs, 15) << 3; /* first_half_vbv_buffer_size */
519 : Isibaar 1.1 READ_MARKER();
520 : edgomez 1.39.2.10 buffer_size |= BitstreamGetBits(bs, 3); /* latter_half_vbv_buffer_size */
521 : edgomez 1.38
522 : edgomez 1.39.2.10 occupancy = BitstreamGetBits(bs, 11) << 15; /* first_half_vbv_occupancy */
523 : Isibaar 1.1 READ_MARKER();
524 : edgomez 1.39.2.10 occupancy |= BitstreamGetBits(bs, 15); /* latter_half_vbv_occupancy */
525 : Isibaar 1.1 READ_MARKER();
526 : edgomez 1.14
527 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"bitrate %d (unit=400 bps)\n", bitrate);
528 :     DPRINTF(XVID_DEBUG_HEADER,"buffer_size %d (unit=16384 bits)\n", buffer_size);
529 :     DPRINTF(XVID_DEBUG_HEADER,"occupancy %d (unit=64 bits)\n", occupancy);
530 : Isibaar 1.1 }
531 : edgomez 1.38 }else{
532 :     dec->low_delay = dec->low_delay_default;
533 : Isibaar 1.1 }
534 :    
535 : edgomez 1.39.2.10 dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */
536 : edgomez 1.38
537 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "shape %i\n", dec->shape);
538 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR)
539 :     {
540 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR,"non-rectangular shapes are not supported\n");
541 : edgomez 1.38 }
542 : edgomez 1.14
543 :     if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) {
544 : edgomez 1.39.2.10 BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */
545 : Isibaar 1.1 }
546 :    
547 :     READ_MARKER();
548 :    
549 : edgomez 1.39.2.10 /********************** for decode B-frame time ***********************/
550 :     dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */
551 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i\n", dec->time_inc_resolution);
552 : suxen_drol 1.22
553 : edgomez 1.39.2.10 #if 0
554 :     dec->time_inc_resolution--;
555 :     #endif
556 : suxen_drol 1.22
557 : edgomez 1.38 if (dec->time_inc_resolution > 0) {
558 :     dec->time_inc_bits = log2bin(dec->time_inc_resolution-1);
559 : edgomez 1.14 } else {
560 : edgomez 1.39.2.10 #if 0
561 :     dec->time_inc_bits = 0;
562 :     #endif
563 :     /* for "old" xvid compatibility, set time_inc_bits = 1 */
564 : Isibaar 1.1 dec->time_inc_bits = 1;
565 :     }
566 :    
567 :     READ_MARKER();
568 :    
569 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* fixed_vop_rate */
570 : Isibaar 1.1 {
571 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "+ fixed_vop_rate\n");
572 : edgomez 1.39.2.10 BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */
573 : Isibaar 1.1 }
574 :    
575 : edgomez 1.14 if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) {
576 : Isibaar 1.1
577 : edgomez 1.14 if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) {
578 : Isibaar 1.1 uint32_t width, height;
579 :    
580 :     READ_MARKER();
581 : edgomez 1.39.2.10 width = BitstreamGetBits(bs, 13); /* video_object_layer_width */
582 : Isibaar 1.1 READ_MARKER();
583 : edgomez 1.39.2.10 height = BitstreamGetBits(bs, 13); /* video_object_layer_height */
584 : Isibaar 1.1 READ_MARKER();
585 :    
586 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width);
587 :     DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height);
588 : chenm001 1.23
589 : edgomez 1.38 if (dec->width != width || dec->height != height)
590 :     {
591 :     if (dec->fixed_dimensions)
592 :     {
593 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "decoder width/height does not match bitstream\n");
594 : edgomez 1.38 return -1;
595 :     }
596 :     resize = 1;
597 : chenm001 1.23 dec->width = width;
598 :     dec->height = height;
599 : Isibaar 1.1 }
600 :     }
601 : h 1.4
602 : suxen_drol 1.22 dec->interlacing = BitstreamGetBit(bs);
603 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "interlacing %i\n", dec->interlacing);
604 : Isibaar 1.1
605 : edgomez 1.39.2.10 if (!BitstreamGetBit(bs)) /* obmc_disable */
606 : Isibaar 1.1 {
607 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "obmc_disabled==false not supported\n");
608 : edgomez 1.39.2.10 /* TODO */
609 :     /* fucking divx4.02 has this enabled */
610 : Isibaar 1.1 }
611 :    
612 : edgomez 1.39.2.10 dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); /* sprite_enable */
613 : edgomez 1.38
614 :     if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC)
615 : Isibaar 1.1 {
616 : edgomez 1.38 int low_latency_sprite_enable;
617 :    
618 :     if (dec->sprite_enable != SPRITE_GMC)
619 :     {
620 :     int sprite_width;
621 :     int sprite_height;
622 :     int sprite_left_coord;
623 :     int sprite_top_coord;
624 : edgomez 1.39.2.10 sprite_width = BitstreamGetBits(bs, 13); /* sprite_width */
625 : edgomez 1.38 READ_MARKER();
626 : edgomez 1.39.2.10 sprite_height = BitstreamGetBits(bs, 13); /* sprite_height */
627 : edgomez 1.38 READ_MARKER();
628 : edgomez 1.39.2.10 sprite_left_coord = BitstreamGetBits(bs, 13); /* sprite_left_coordinate */
629 : edgomez 1.38 READ_MARKER();
630 : edgomez 1.39.2.10 sprite_top_coord = BitstreamGetBits(bs, 13); /* sprite_top_coordinate */
631 : edgomez 1.38 READ_MARKER();
632 :     }
633 : edgomez 1.39.2.10 dec->sprite_warping_points = BitstreamGetBits(bs, 6); /* no_of_sprite_warping_points */
634 :     dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); /* sprite_warping_accuracy */
635 :     dec->sprite_brightness_change = BitstreamGetBits(bs, 1); /* brightness_change */
636 : edgomez 1.38 if (dec->sprite_enable != SPRITE_GMC)
637 :     {
638 : edgomez 1.39.2.10 low_latency_sprite_enable = BitstreamGetBits(bs, 1); /* low_latency_sprite_enable */
639 : edgomez 1.38 }
640 : Isibaar 1.1 }
641 : edgomez 1.14
642 :     if (vol_ver_id != 1 &&
643 :     dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) {
644 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* sadct_disable */
645 : Isibaar 1.1 }
646 :    
647 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* not_8_bit */
648 : Isibaar 1.1 {
649 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "not_8_bit==true (ignored)\n");
650 : edgomez 1.39.2.10 dec->quant_bits = BitstreamGetBits(bs, 4); /* quant_precision */
651 :     BitstreamSkip(bs, 4); /* bits_per_pixel */
652 : edgomez 1.14 } else {
653 : Isibaar 1.1 dec->quant_bits = 5;
654 :     }
655 :    
656 : edgomez 1.14 if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) {
657 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* no_gray_quant_update */
658 :     BitstreamSkip(bs, 1); /* composition_method */
659 :     BitstreamSkip(bs, 1); /* linear_composition */
660 : Isibaar 1.1 }
661 :    
662 : edgomez 1.39.2.10 dec->quant_type = BitstreamGetBit(bs); /* quant_type */
663 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "quant_type %i\n", dec->quant_type);
664 : Isibaar 1.1
665 : edgomez 1.14 if (dec->quant_type) {
666 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* load_intra_quant_mat */
667 : Isibaar 1.1 {
668 : Isibaar 1.3 uint8_t matrix[64];
669 : edgomez 1.14
670 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat\n");
671 : suxen_drol 1.22
672 : Isibaar 1.2 bs_get_matrix(bs, matrix);
673 :     set_intra_matrix(matrix);
674 : edgomez 1.14 } else
675 : Isibaar 1.3 set_intra_matrix(get_default_intra_matrix());
676 : Isibaar 1.2
677 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* load_inter_quant_mat */
678 : Isibaar 1.1 {
679 : edgomez 1.14 uint8_t matrix[64];
680 : suxen_drol 1.22
681 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat\n");
682 : edgomez 1.14
683 : Isibaar 1.2 bs_get_matrix(bs, matrix);
684 :     set_inter_matrix(matrix);
685 : edgomez 1.14 } else
686 : Isibaar 1.3 set_inter_matrix(get_default_inter_matrix());
687 : Isibaar 1.1
688 : edgomez 1.14 if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) {
689 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported\n");
690 : Isibaar 1.1 return -1;
691 :     }
692 : Isibaar 1.2
693 : Isibaar 1.1 }
694 :    
695 : edgomez 1.14
696 :     if (vol_ver_id != 1) {
697 : edgomez 1.39.2.10 dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */
698 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"quarterpel %i\n", dec->quarterpel);
699 : Isibaar 1.26 }
700 :     else
701 : Isibaar 1.1 dec->quarterpel = 0;
702 : Isibaar 1.26
703 : Isibaar 1.1
704 : edgomez 1.38 dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */
705 :     if (!dec->complexity_estimation_disable)
706 : Isibaar 1.1 {
707 : edgomez 1.38 read_vol_complexity_estimation_header(bs, dec);
708 : Isibaar 1.1 }
709 :    
710 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* resync_marker_disable */
711 : Isibaar 1.1
712 : edgomez 1.39.2.10 if (BitstreamGetBit(bs)) /* data_partitioned */
713 : Isibaar 1.1 {
714 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "data_partitioned not supported\n");
715 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* reversible_vlc */
716 : Isibaar 1.1 }
717 :    
718 : edgomez 1.14 if (vol_ver_id != 1) {
719 : edgomez 1.38 dec->newpred_enable = BitstreamGetBit(bs);
720 : edgomez 1.39.2.10 if (dec->newpred_enable) /* newpred_enable */
721 : Isibaar 1.1 {
722 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "+ newpred_enable\n");
723 : edgomez 1.39.2.10 BitstreamSkip(bs, 2); /* requested_upstream_message_type */
724 :     BitstreamSkip(bs, 1); /* newpred_segment_type */
725 : Isibaar 1.1 }
726 : edgomez 1.38 dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */
727 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution_enable %i\n", dec->reduced_resolution_enable);
728 : edgomez 1.38 }
729 :     else
730 :     {
731 :     dec->newpred_enable = 0;
732 :     dec->reduced_resolution_enable = 0;
733 : Isibaar 1.1 }
734 : edgomez 1.14
735 : edgomez 1.38 dec->scalability = BitstreamGetBit(bs); /* scalability */
736 :     if (dec->scalability)
737 : Isibaar 1.1 {
738 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n");
739 : edgomez 1.38 BitstreamSkip(bs, 1); /* hierarchy_type */
740 :     BitstreamSkip(bs, 4); /* ref_layer_id */
741 :     BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */
742 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_n */
743 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_m */
744 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_n */
745 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_m */
746 :     BitstreamSkip(bs, 1); /* enhancement_type */
747 :     if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) {
748 :     BitstreamSkip(bs, 1); /* use_ref_shape */
749 :     BitstreamSkip(bs, 1); /* use_ref_texture */
750 :     BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */
751 :     BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */
752 :     BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */
753 :     BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */
754 :     }
755 : Isibaar 1.1 return -1;
756 :     }
757 : edgomez 1.39.2.10 } else /* dec->shape == BINARY_ONLY */
758 : Isibaar 1.1 {
759 : edgomez 1.14 if (vol_ver_id != 1) {
760 : edgomez 1.38 dec->scalability = BitstreamGetBit(bs); /* scalability */
761 :     if (dec->scalability)
762 : Isibaar 1.1 {
763 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n");
764 : edgomez 1.38 BitstreamSkip(bs, 4); /* ref_layer_id */
765 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_n */
766 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_m */
767 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_n */
768 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_m */
769 : Isibaar 1.1 return -1;
770 :     }
771 :     }
772 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* resync_marker_disable */
773 : Isibaar 1.1
774 :     }
775 :    
776 : edgomez 1.38 return (resize ? -3 : -2 ); /* VOL */
777 :    
778 : edgomez 1.14 } else if (start_code == GRPOFVOP_START_CODE) {
779 : suxen_drol 1.22
780 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<group_of_vop>\n");
781 : suxen_drol 1.22
782 : Isibaar 1.1 BitstreamSkip(bs, 32);
783 :     {
784 :     int hours, minutes, seconds;
785 : edgomez 1.14
786 : Isibaar 1.1 hours = BitstreamGetBits(bs, 5);
787 :     minutes = BitstreamGetBits(bs, 6);
788 :     READ_MARKER();
789 :     seconds = BitstreamGetBits(bs, 6);
790 : suxen_drol 1.22
791 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "time %ih%im%is\n", hours,minutes,seconds);
792 : Isibaar 1.1 }
793 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* closed_gov */
794 :     BitstreamSkip(bs, 1); /* broken_link */
795 : suxen_drol 1.22
796 : edgomez 1.14 } else if (start_code == VOP_START_CODE) {
797 : suxen_drol 1.22
798 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<vop>\n");
799 : suxen_drol 1.22
800 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* vop_start_code */
801 : Isibaar 1.1
802 : edgomez 1.39.2.10 coding_type = BitstreamGetBits(bs, 2); /* vop_coding_type */
803 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "coding_type %i\n", coding_type);
804 : Isibaar 1.1
805 : edgomez 1.39.2.10 /*********************** for decode B-frame time ***********************/
806 :     while (BitstreamGetBit(bs) != 0) /* time_base */
807 : chenm001 1.9 time_incr++;
808 : edgomez 1.14
809 : Isibaar 1.1 READ_MARKER();
810 : edgomez 1.14
811 :     if (dec->time_inc_bits) {
812 : edgomez 1.39.2.10 time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */
813 : chenm001 1.9 }
814 : suxen_drol 1.19
815 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "time_base %i\n", time_incr);
816 :     DPRINTF(XVID_DEBUG_HEADER, "time_increment %i\n", time_increment);
817 : suxen_drol 1.22
818 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_TIMECODE, "%c %i:%i\n",
819 : edgomez 1.38 coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S',
820 : suxen_drol 1.19 time_incr, time_increment);
821 :    
822 : edgomez 1.14 if (coding_type != B_VOP) {
823 :     dec->last_time_base = dec->time_base;
824 : chenm001 1.9 dec->time_base += time_incr;
825 : chl 1.25 dec->time = time_increment;
826 :    
827 : edgomez 1.39.2.10 #if 0
828 :     dec->time_base * dec->time_inc_resolution +
829 : edgomez 1.14 time_increment;
830 : edgomez 1.39.2.10 #endif
831 :     dec->time_pp = (uint32_t)
832 :     (dec->time_inc_resolution + dec->time - dec->last_non_b_time)%dec->time_inc_resolution;
833 : edgomez 1.14 dec->last_non_b_time = dec->time;
834 :     } else {
835 : chl 1.25 dec->time = time_increment;
836 : edgomez 1.39.2.10 #if 0
837 : edgomez 1.14 (dec->last_time_base +
838 : edgomez 1.38 time_incr) * dec->time_inc_resolution + time_increment;
839 : edgomez 1.39.2.10 #endif
840 : chl 1.24 dec->time_bp = (uint32_t)
841 : edgomez 1.38 (dec->time_inc_resolution + dec->last_non_b_time - dec->time)%dec->time_inc_resolution;
842 : Isibaar 1.1 }
843 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp);
844 :     DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp);
845 : Isibaar 1.1
846 :     READ_MARKER();
847 :    
848 : edgomez 1.39.2.10 if (!BitstreamGetBit(bs)) /* vop_coded */
849 : Isibaar 1.1 {
850 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "vop_coded==false\n");
851 : Isibaar 1.1 return N_VOP;
852 :     }
853 :    
854 : edgomez 1.38 if (dec->newpred_enable)
855 :     {
856 :     int vop_id;
857 :     int vop_id_for_prediction;
858 :    
859 :     vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
860 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id);
861 : edgomez 1.38 if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */
862 :     {
863 :     vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
864 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction);
865 : edgomez 1.38 }
866 :     READ_MARKER();
867 :     }
868 :    
869 :    
870 : Isibaar 1.1
871 : edgomez 1.39.2.10 /* fix a little bug by MinChen <chenm002@163.com> */
872 : edgomez 1.14 if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) &&
873 : edgomez 1.38 ( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) {
874 : edgomez 1.39.2.10 *rounding = BitstreamGetBit(bs); /* rounding_type */
875 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "rounding %i\n", *rounding);
876 : Isibaar 1.1 }
877 :    
878 : edgomez 1.38 if (dec->reduced_resolution_enable &&
879 :     dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR &&
880 :     (coding_type == P_VOP || coding_type == I_VOP)) {
881 :    
882 :     *reduced_resolution = BitstreamGetBit(bs);
883 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution %i\n", *reduced_resolution);
884 : edgomez 1.38 }
885 :     else
886 :     {
887 :     *reduced_resolution = 0;
888 :     }
889 : Isibaar 1.1
890 : edgomez 1.14 if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) {
891 : edgomez 1.38 if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) {
892 : edgomez 1.14
893 : edgomez 1.38 uint32_t width, height;
894 :     uint32_t horiz_mc_ref, vert_mc_ref;
895 : Isibaar 1.1
896 : edgomez 1.38 width = BitstreamGetBits(bs, 13);
897 :     READ_MARKER();
898 :     height = BitstreamGetBits(bs, 13);
899 :     READ_MARKER();
900 :     horiz_mc_ref = BitstreamGetBits(bs, 13);
901 :     READ_MARKER();
902 :     vert_mc_ref = BitstreamGetBits(bs, 13);
903 :     READ_MARKER();
904 : Isibaar 1.1
905 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width);
906 :     DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height);
907 :     DPRINTF(XVID_DEBUG_HEADER, "horiz_mc_ref %i\n", horiz_mc_ref);
908 :     DPRINTF(XVID_DEBUG_HEADER, "vert_mc_ref %i\n", vert_mc_ref);
909 : edgomez 1.38 }
910 :    
911 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* change_conv_ratio_disable */
912 :     if (BitstreamGetBit(bs)) /* vop_constant_alpha */
913 : Isibaar 1.1 {
914 : edgomez 1.39.2.10 BitstreamSkip(bs, 8); /* vop_constant_alpha_value */
915 : Isibaar 1.1 }
916 :     }
917 :    
918 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) {
919 : edgomez 1.14
920 : edgomez 1.38 if (!dec->complexity_estimation_disable)
921 :     {
922 :     read_vop_complexity_estimation_header(bs, dec, coding_type);
923 :     }
924 :    
925 : edgomez 1.39.2.10 /* intra_dc_vlc_threshold */
926 : edgomez 1.14 *intra_dc_threshold =
927 :     intra_dc_threshold_table[BitstreamGetBits(bs, 3)];
928 : Isibaar 1.1
929 : edgomez 1.38 dec->top_field_first = 0;
930 :     dec->alternate_vertical_scan = 0;
931 :    
932 : edgomez 1.14 if (dec->interlacing) {
933 : suxen_drol 1.22 dec->top_field_first = BitstreamGetBit(bs);
934 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "interlace top_field_first %i\n", dec->top_field_first);
935 : suxen_drol 1.22 dec->alternate_vertical_scan = BitstreamGetBit(bs);
936 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "interlace alternate_vertical_scan %i\n", dec->alternate_vertical_scan);
937 : suxen_drol 1.22
938 : h 1.4 }
939 : Isibaar 1.1 }
940 : edgomez 1.14
941 : edgomez 1.38 if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) {
942 :    
943 :     int i;
944 :    
945 :     for (i = 0 ; i < dec->sprite_warping_points; i++)
946 :     {
947 :     int length;
948 :     int x = 0, y = 0;
949 :    
950 :     /* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */
951 :     length = bs_get_spritetrajectory(bs);
952 :     if(length){
953 :     x= BitstreamGetBits(bs, length);
954 :     if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/
955 :     x = - (x ^ ((1 << length) - 1));
956 :     }
957 :     READ_MARKER();
958 :    
959 :     length = bs_get_spritetrajectory(bs);
960 :     if(length){
961 :     y = BitstreamGetBits(bs, length);
962 :     if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/
963 :     y = - (y ^ ((1 << length) - 1));
964 :     }
965 :     READ_MARKER();
966 :    
967 :     gmc_warp->duv[i].x = x;
968 :     gmc_warp->duv[i].y = y;
969 :    
970 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", i, x, y);
971 : edgomez 1.38 }
972 :    
973 :     if (dec->sprite_brightness_change)
974 :     {
975 : edgomez 1.39.2.10 /* XXX: brightness_change_factor() */
976 : edgomez 1.38 }
977 :     if (dec->sprite_enable == SPRITE_STATIC)
978 :     {
979 : edgomez 1.39.2.10 /* XXX: todo */
980 : edgomez 1.38 }
981 :    
982 :     }
983 :    
984 : edgomez 1.39.2.10 if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) /* vop_quant */
985 : Isibaar 1.10 *quant = 1;
986 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant);
987 : edgomez 1.14
988 :     if (coding_type != I_VOP) {
989 : edgomez 1.39.2.10 *fcode_forward = BitstreamGetBits(bs, 3); /* fcode_forward */
990 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "fcode_forward %i\n", *fcode_forward);
991 : Isibaar 1.1 }
992 : edgomez 1.14
993 :     if (coding_type == B_VOP) {
994 : edgomez 1.39.2.10 *fcode_backward = BitstreamGetBits(bs, 3); /* fcode_backward */
995 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "fcode_backward %i\n", *fcode_backward);
996 : chenm001 1.9 }
997 : edgomez 1.14 if (!dec->scalability) {
998 :     if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) &&
999 :     (coding_type != I_VOP)) {
1000 : edgomez 1.39.2.10 BitstreamSkip(bs, 1); /* vop_shape_coding_type */
1001 : chenm001 1.9 }
1002 : Isibaar 1.1 }
1003 :     return coding_type;
1004 : suxen_drol 1.22
1005 : edgomez 1.14 } else if (start_code == USERDATA_START_CODE) {
1006 : edgomez 1.38 char tmp[256];
1007 :     int i, version, build;
1008 :     char packed;
1009 :    
1010 : edgomez 1.39.2.10 BitstreamSkip(bs, 32); /* user_data_start_code */
1011 : edgomez 1.38
1012 :     tmp[0] = BitstreamShowBits(bs, 8);
1013 :    
1014 :     for(i = 1; i < 256; i++){
1015 :     tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF);
1016 :    
1017 :     if(tmp[i] == 0)
1018 :     break;
1019 :    
1020 :     BitstreamSkip(bs, 8);
1021 :     }
1022 : suxen_drol 1.22
1023 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s\n", tmp);
1024 : suxen_drol 1.22
1025 : edgomez 1.38 /* divx detection */
1026 :     i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed);
1027 :     if (i < 2)
1028 :     i = sscanf(tmp, "DivX%db%d%c", &version, &build, &packed);
1029 :    
1030 :     if (i >= 2)
1031 :     {
1032 :     dec->packed_mode = (i == 3 && packed == 'p');
1033 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_HEADER, "divx version=%i, build=%i packed=%i\n",
1034 : edgomez 1.38 version, build, dec->packed_mode);
1035 :     }
1036 : suxen_drol 1.22
1037 : edgomez 1.39.2.10 } else /* start_code == ? */
1038 : Isibaar 1.1 {
1039 : edgomez 1.14 if (BitstreamShowBits(bs, 24) == 0x000001) {
1040 : edgomez 1.39.2.9 DPRINTF(XVID_DEBUG_STARTCODE, "<unknown: %x>\n", BitstreamShowBits(bs, 32));
1041 : Isibaar 1.1 }
1042 :     BitstreamSkip(bs, 8);
1043 :     }
1044 :     }
1045 :     while ((BitstreamPos(bs) >> 3) < bs->length);
1046 :    
1047 : edgomez 1.39.2.10 #if 0
1048 :     DPRINTF("*** WARNING: no vop_start_code found");
1049 :     #endif
1050 : edgomez 1.14 return -1; /* ignore it */
1051 : Isibaar 1.1 }
1052 :    
1053 :    
1054 :     /* write custom quant matrix */
1055 :    
1056 : edgomez 1.14 static void
1057 :     bs_put_matrix(Bitstream * bs,
1058 :     const int16_t * matrix)
1059 : Isibaar 1.1 {
1060 :     int i, j;
1061 :     const int last = matrix[scan_tables[0][63]];
1062 :    
1063 : suxen_drol 1.18 for (j = 63; j > 0 && matrix[scan_tables[0][j - 1]] == last; j--);
1064 : Isibaar 1.1
1065 : edgomez 1.14 for (i = 0; i <= j; i++) {
1066 : Isibaar 1.1 BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8);
1067 :     }
1068 :    
1069 : edgomez 1.14 if (j < 63) {
1070 : Isibaar 1.1 BitstreamPutBits(bs, 0, 8);
1071 :     }
1072 :     }
1073 :    
1074 :    
1075 :     /*
1076 :     write vol header
1077 :     */
1078 : edgomez 1.14 void
1079 :     BitstreamWriteVolHeader(Bitstream * const bs,
1080 : suxen_drol 1.39.2.1 const MBParam * pParam)
1081 : Isibaar 1.1 {
1082 : edgomez 1.38 static const unsigned int vo_id = 0;
1083 :     static const unsigned int vol_id = 0;
1084 :     int vol_ver_id=1;
1085 : suxen_drol 1.39.2.5 int vol_type_ind=VIDOBJLAY_TYPE_SIMPLE;
1086 : edgomez 1.38
1087 : edgomez 1.39.2.6 if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) ||
1088 :     (pParam->vol_flags & XVID_VOL_GMC) ||
1089 :     (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE))
1090 : edgomez 1.38 vol_ver_id = 2;
1091 :    
1092 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) {
1093 : suxen_drol 1.39.2.5 vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE;
1094 :     }
1095 : edgomez 1.38
1096 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_QUARTERPEL) ||
1097 :     (pParam->vol_flags & XVID_VOL_GMC)) {
1098 : suxen_drol 1.39.2.5 vol_type_ind = VIDOBJLAY_TYPE_ASP;
1099 :     }
1100 : edgomez 1.38
1101 : edgomez 1.39.2.10 /* visual_object_sequence_start_code */
1102 :     #if 0
1103 :     BitstreamPad(bs);
1104 :     #endif
1105 :    
1106 :     /*
1107 :     * no padding here, anymore. You have to make sure that you are
1108 :     * byte aligned, and that always 1-8 padding bits have been written
1109 :     */
1110 : edgomez 1.38
1111 : suxen_drol 1.39.2.7 if (pParam->profile) {
1112 :     BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32);
1113 :     BitstreamPutBits(bs, pParam->profile, 8);
1114 :     }
1115 : edgomez 1.38
1116 : edgomez 1.39.2.10 /* visual_object_start_code */
1117 : edgomez 1.38 BitstreamPad(bs);
1118 :     BitstreamPutBits(bs, VISOBJ_START_CODE, 32);
1119 : edgomez 1.39.2.10 BitstreamPutBits(bs, 0, 1); /* is_visual_object_identifier */
1120 :     BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); /* visual_object_type */
1121 : edgomez 1.38
1122 : edgomez 1.39.2.10 /* video object_start_code & vo_id */
1123 : edgomez 1.14 BitstreamPad(bs);
1124 : edgomez 1.38 BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32);
1125 : Isibaar 1.1
1126 : edgomez 1.39.2.10 /* video_object_layer_start_code & vol_id */
1127 : edgomez 1.38 BitstreamPad(bs);
1128 :     BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32);
1129 : Isibaar 1.1
1130 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* random_accessible_vol */
1131 :     BitstreamPutBits(bs, vol_type_ind, 8); /* video_object_type_indication */
1132 : suxen_drol 1.12
1133 : edgomez 1.38 if (vol_ver_id == 1)
1134 :     {
1135 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */
1136 : edgomez 1.38 }
1137 :     else
1138 :     {
1139 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* is_object_layer_identified */
1140 :     BitstreamPutBits(bs, vol_ver_id, 4); /* vol_ver_id == 2 */
1141 :     BitstreamPutBits(bs, 4, 3); /* vol_ver_priority (1==lowest, 7==highest) ?? */
1142 : edgomez 1.38 }
1143 : chl 1.28
1144 : edgomez 1.39.2.10 BitstreamPutBits(bs, 1, 4); /* aspect_ratio_info (1=1:1) */
1145 : edgomez 1.31
1146 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* vol_control_parameters */
1147 :     BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */
1148 : suxen_drol 1.12
1149 : edgomez 1.38 if (pParam->max_bframes > 0) {
1150 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* low_delay */
1151 : edgomez 1.38 } else
1152 :     {
1153 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* low_delay */
1154 : edgomez 1.38 }
1155 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* vbv_parameters (0=not given) */
1156 : edgomez 1.38
1157 : edgomez 1.39.2.10 BitstreamPutBits(bs, 0, 2); /* video_object_layer_shape (0=rectangular) */
1158 : Isibaar 1.1
1159 :     WRITE_MARKER();
1160 : edgomez 1.14
1161 : edgomez 1.39.2.10 /*
1162 :     * time_inc_resolution; ignored by current decore versions
1163 :     * eg. 2fps res=2 inc=1
1164 :     * 25fps res=25 inc=1
1165 :     * 29.97fps res=30000 inc=1001
1166 : edgomez 1.14 */
1167 : suxen_drol 1.11 BitstreamPutBits(bs, pParam->fbase, 16);
1168 : edgomez 1.31
1169 : Isibaar 1.1 WRITE_MARKER();
1170 :    
1171 : suxen_drol 1.39.2.3 if (pParam->fincr>0) {
1172 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */
1173 :     BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); /* fixed_vop_time_increment */
1174 : suxen_drol 1.39.2.3 }else{
1175 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */
1176 : suxen_drol 1.39.2.3 }
1177 : Isibaar 1.1
1178 :     WRITE_MARKER();
1179 : edgomez 1.39.2.10 BitstreamPutBits(bs, pParam->width, 13); /* width */
1180 : Isibaar 1.1 WRITE_MARKER();
1181 : edgomez 1.39.2.10 BitstreamPutBits(bs, pParam->height, 13); /* height */
1182 : Isibaar 1.1 WRITE_MARKER();
1183 : edgomez 1.14
1184 : edgomez 1.39.2.10 BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_INTERLACING); /* interlace */
1185 :     BitstreamPutBit(bs, 1); /* obmc_disable (overlapped block motion compensation) */
1186 : edgomez 1.38
1187 :     if (vol_ver_id != 1)
1188 : edgomez 1.39.2.6 { if ((pParam->vol_flags & XVID_VOL_GMC))
1189 : edgomez 1.39.2.10 { BitstreamPutBits(bs, 2, 2); /* sprite_enable=='GMC' */
1190 :     BitstreamPutBits(bs, 2, 6); /* no_of_sprite_warping_points */
1191 :     BitstreamPutBits(bs, 3, 2); /* sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 */
1192 :     BitstreamPutBit(bs, 0); /* sprite_brightness_change (not supported) */
1193 :    
1194 :     /*
1195 :     * currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3
1196 :     * for DivX5 compatability
1197 :     */
1198 : edgomez 1.38
1199 :     } else
1200 : edgomez 1.39.2.10 BitstreamPutBits(bs, 0, 2); /* sprite_enable==off */
1201 : edgomez 1.38 }
1202 :     else
1203 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* sprite_enable==off */
1204 : edgomez 1.38
1205 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* not_8_bit */
1206 : Isibaar 1.1
1207 : edgomez 1.39.2.10 /* quant_type 0=h.263 1=mpeg4(quantizer tables) */
1208 : edgomez 1.39.2.6 BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT);
1209 : edgomez 1.14
1210 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) {
1211 : edgomez 1.39.2.10 BitstreamPutBit(bs, get_intra_matrix_status()); /* load_intra_quant_mat */
1212 : edgomez 1.14 if (get_intra_matrix_status()) {
1213 : Isibaar 1.2 bs_put_matrix(bs, get_intra_matrix());
1214 : Isibaar 1.1 }
1215 :    
1216 : edgomez 1.39.2.10 BitstreamPutBit(bs, get_inter_matrix_status()); /* load_inter_quant_mat */
1217 : edgomez 1.14 if (get_inter_matrix_status()) {
1218 : Isibaar 1.2 bs_put_matrix(bs, get_inter_matrix());
1219 : Isibaar 1.1 }
1220 :    
1221 :     }
1222 :    
1223 : edgomez 1.38 if (vol_ver_id != 1) {
1224 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_QUARTERPEL))
1225 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* quarterpel */
1226 : edgomez 1.38 else
1227 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* no quarterpel */
1228 : edgomez 1.38 }
1229 :    
1230 : edgomez 1.39.2.10 BitstreamPutBit(bs, 1); /* complexity_estimation_disable */
1231 :     BitstreamPutBit(bs, 1); /* resync_marker_disable */
1232 :     BitstreamPutBit(bs, 0); /* data_partitioned */
1233 : edgomez 1.38
1234 :     if (vol_ver_id != 1)
1235 :     {
1236 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* newpred_enable */
1237 : edgomez 1.38
1238 : edgomez 1.39.2.6 BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0);
1239 : edgomez 1.38 /* reduced_resolution_vop_enabled */
1240 :     }
1241 :    
1242 : edgomez 1.39.2.10 BitstreamPutBit(bs, 0); /* scalability */
1243 : edgomez 1.38
1244 :     /* fake divx5 id, to ensure compatibility with divx5 decoder */
1245 : suxen_drol 1.39.2.1 #define DIVX5_ID "DivX000b000p"
1246 : edgomez 1.39.2.6 if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) {
1247 : edgomez 1.38 BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID));
1248 :     }
1249 :    
1250 :     /* xvid id */
1251 :     #define XVID_ID "XviD" XVID_BS_VERSION
1252 :     BitstreamWriteUserData(bs, XVID_ID, strlen(XVID_ID));
1253 : Isibaar 1.1 }
1254 :    
1255 :    
1256 :     /*
1257 :     write vop header
1258 :     */
1259 : edgomez 1.14 void
1260 : edgomez 1.38 BitstreamWriteVopHeader(
1261 :     Bitstream * const bs,
1262 : edgomez 1.14 const MBParam * pParam,
1263 : edgomez 1.38 const FRAMEINFO * const frame,
1264 : suxen_drol 1.17 int vop_coded)
1265 : Isibaar 1.1 {
1266 : suxen_drol 1.8 uint32_t i;
1267 : chl 1.28
1268 : edgomez 1.39.2.10 #if 0
1269 :     BitstreamPad(bs);
1270 :     #endif
1271 :    
1272 :     /*
1273 :     * no padding here, anymore. You have to make sure that you are
1274 :     * byte aligned, and that always 1-8 padding bits have been written
1275 :     */
1276 : edgomez 1.38
1277 : edgomez 1.14 BitstreamPutBits(bs, VOP_START_CODE, 32);
1278 :    
1279 :     BitstreamPutBits(bs, frame->coding_type, 2);
1280 : edgomez 1.39.2.10 #if 0
1281 :     DPRINTF(XVID_DEBUG_HEADER, "coding_type = %i\n", frame->coding_type);
1282 :     #endif
1283 : Isibaar 1.1
1284 : chl 1.28 for (i = 0; i < frame->seconds; i++) {
1285 :     BitstreamPutBit(bs, 1);
1286 :     }
1287 :     BitstreamPutBit(bs, 0);
1288 : Isibaar 1.1
1289 :     WRITE_MARKER();
1290 :    
1291 : edgomez 1.39.2.10 /* time_increment: value=nth_of_sec, nbits = log2(resolution) */
1292 : edgomez 1.38
1293 : edgomez 1.14 BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase));
1294 : edgomez 1.39.2.10 #if 0
1295 :     DPRINTF("[%i:%i] %c",
1296 :     frame->seconds, frame->ticks,
1297 :     frame->coding_type == I_VOP ? 'I' :
1298 :     frame->coding_type == P_VOP ? 'P' :
1299 :     frame->coding_type == S_VOP ? 'S' : 'B');
1300 :     #endif
1301 : Isibaar 1.1
1302 :     WRITE_MARKER();
1303 :    
1304 : suxen_drol 1.17 if (!vop_coded) {
1305 :     BitstreamPutBits(bs, 0, 1);
1306 :     return;
1307 :     }
1308 :    
1309 : edgomez 1.39.2.10 BitstreamPutBits(bs, 1, 1); /* vop_coded */
1310 : Isibaar 1.1
1311 : edgomez 1.38 if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) )
1312 : suxen_drol 1.7 BitstreamPutBits(bs, frame->rounding_type, 1);
1313 : Isibaar 1.1
1314 : edgomez 1.39.2.6 if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE))
1315 :     BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_REDUCED)?1:0);
1316 : edgomez 1.38
1317 : edgomez 1.39.2.10 BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */
1318 : edgomez 1.14
1319 : edgomez 1.39.2.6 if ((frame->vol_flags & XVID_VOL_INTERLACING)) {
1320 :     BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_TOPFIELDFIRST));
1321 :     BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_ALTERNATESCAN));
1322 : edgomez 1.38 }
1323 :    
1324 :     if (frame->coding_type == S_VOP) {
1325 : edgomez 1.39.2.10 if (1) { /* no_of_sprite_warping_points>=1 (we use 2!) */
1326 : edgomez 1.38 int k;
1327 :     for (k=0;k<2;k++)
1328 :     {
1329 : edgomez 1.39.2.10 bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); /* du[k] */
1330 : edgomez 1.38 WRITE_MARKER();
1331 :    
1332 : edgomez 1.39.2.10 bs_put_spritetrajectory(bs, frame->warp.duv[k].y ); /* dv[k] */
1333 : edgomez 1.38 WRITE_MARKER();
1334 :    
1335 : edgomez 1.39.2.6 if ((frame->vol_flags & XVID_VOL_QUARTERPEL))
1336 : edgomez 1.38 {
1337 : 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);
1338 : edgomez 1.38 }
1339 :     else
1340 :     {
1341 : 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);
1342 : edgomez 1.38 }
1343 :     }
1344 :     }
1345 : h 1.4 }
1346 : edgomez 1.38
1347 : h 1.4
1348 : edgomez 1.39.2.10 #if 0
1349 :     DPRINTF(XVID_DEBUG_HEADER, "quant = %i\n", frame->quant);
1350 :     #endif
1351 : edgomez 1.38
1352 : edgomez 1.39.2.10 BitstreamPutBits(bs, frame->quant, 5); /* quantizer */
1353 : edgomez 1.14
1354 : suxen_drol 1.7 if (frame->coding_type != I_VOP)
1355 : edgomez 1.39.2.10 BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */
1356 : suxen_drol 1.8
1357 :     if (frame->coding_type == B_VOP)
1358 : edgomez 1.39.2.10 BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */
1359 : edgomez 1.38
1360 :     }
1361 :    
1362 :     void
1363 :     BitstreamWriteUserData(Bitstream * const bs,
1364 :     uint8_t * data,
1365 :     const int length)
1366 :     {
1367 :     int i;
1368 :    
1369 :     BitstreamPad(bs);
1370 :     BitstreamPutBits(bs, USERDATA_START_CODE, 32);
1371 :    
1372 :     for (i = 0; i < length; i++) {
1373 :     BitstreamPutBits(bs, data[i], 8);
1374 :     }
1375 : suxen_drol 1.17
1376 : chl 1.24 }

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