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1 : | Isibaar | 3 | /****************************************************************************** |
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 : | chenm001 | 223 | * * |
42 : | Isibaar | 3 | * Revision history: * |
43 : | chenm001 | 223 | * * |
44 : | chl | 619 | * 28.10.2002 GMC support - gruel * |
45 : | Isibaar | 579 | * 04.10.2002 qpel support - Isibaar * |
46 : | chenm001 | 294 | * 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 : | suxen_drol | 229 | * 20.05.2002 added BitstreamWriteUserData * |
51 : | Isibaar | 579 | * 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 : | suxen_drol | 164 | * 06.05.2002 low_delay * |
56 : | suxen_drol | 163 | * 06.05.2002 fixed fincr/fbase error * |
57 : | * 01.05.2002 added BVOP support to BitstreamWriteVopHeader * | ||
58 : | chenm001 | 124 | * 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> * |
59 : | chenm001 | 223 | * 26.03.2002 interlacing support * |
60 : | * 03.03.2002 qmatrix writing * | ||
61 : | * 03.03.2002 merged BITREADER and BITWRITER * | ||
62 : | Isibaar | 579 | * 30.02.2002 intra_dc_threshold support * |
63 : | * 04.12.2001 support for additional headers * | ||
64 : | * 16.12.2001 inital version * | ||
65 : | * * | ||
66 : | Isibaar | 3 | ******************************************************************************/ |
67 : | |||
68 : | |||
69 : | Isibaar | 645 | #include <string.h> |
70 : | suxen_drol | 721 | #include <stdio.h> |
71 : | |||
72 : | Isibaar | 3 | #include "bitstream.h" |
73 : | #include "zigzag.h" | ||
74 : | Isibaar | 4 | #include "../quant/quant_matrix.h" |
75 : | chl | 619 | #include "mbcoding.h" |
76 : | Isibaar | 3 | |
77 : | chenm001 | 124 | |
78 : | edgomez | 195 | static uint32_t __inline |
79 : | log2bin(uint32_t value) | ||
80 : | Isibaar | 3 | { |
81 : | chenm001 | 124 | /* Changed by Chenm001 */ |
82 : | suxen_drol | 707 | #if !defined(_MSC_VER) |
83 : | Isibaar | 3 | int n = 0; |
84 : | edgomez | 195 | |
85 : | while (value) { | ||
86 : | Isibaar | 3 | value >>= 1; |
87 : | n++; | ||
88 : | } | ||
89 : | return n; | ||
90 : | chenm001 | 124 | #else |
91 : | edgomez | 195 | __asm { |
92 : | suxen_drol | 206 | bsr eax, value |
93 : | inc eax | ||
94 : | } | ||
95 : | chenm001 | 124 | #endif |
96 : | Isibaar | 3 | } |
97 : | |||
98 : | |||
99 : | edgomez | 195 | static const uint32_t intra_dc_threshold_table[] = { |
100 : | 32, /* never use */ | ||
101 : | Isibaar | 3 | 13, |
102 : | 15, | ||
103 : | 17, | ||
104 : | 19, | ||
105 : | 21, | ||
106 : | 23, | ||
107 : | 1, | ||
108 : | }; | ||
109 : | |||
110 : | |||
111 : | edgomez | 195 | void |
112 : | bs_get_matrix(Bitstream * bs, | ||
113 : | uint8_t * matrix) | ||
114 : | { | ||
115 : | int i = 0; | ||
116 : | int last, value = 0; | ||
117 : | Isibaar | 4 | |
118 : | edgomez | 195 | do { |
119 : | last = value; | ||
120 : | value = BitstreamGetBits(bs, 8); | ||
121 : | matrix[scan_tables[0][i++]] = value; | ||
122 : | } | ||
123 : | while (value != 0 && i < 64); | ||
124 : | chenm001 | 223 | i--; // fix little bug at coeff not full |
125 : | edgomez | 195 | |
126 : | while (i < 64) { | ||
127 : | matrix[scan_tables[0][i++]] = last; | ||
128 : | } | ||
129 : | } | ||
130 : | |||
131 : | suxen_drol | 248 | |
132 : | |||
133 : | // for PVOP addbits == fcode - 1 | ||
134 : | // for BVOP addbits == max(fcode,bcode) - 1 | ||
135 : | // returns mbpos | ||
136 : | int | ||
137 : | suxen_drol | 631 | read_video_packet_header(Bitstream *bs, |
138 : | DECODER * dec, | ||
139 : | const int addbits, | ||
140 : | int * quant, | ||
141 : | int * fcode_forward, | ||
142 : | int * fcode_backward, | ||
143 : | int * intra_dc_threshold) | ||
144 : | suxen_drol | 248 | { |
145 : | suxen_drol | 631 | int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits; |
146 : | int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1); | ||
147 : | suxen_drol | 248 | int mbnum; |
148 : | suxen_drol | 631 | int hec = 0; |
149 : | suxen_drol | 248 | |
150 : | BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); | ||
151 : | suxen_drol | 631 | BitstreamSkip(bs, startcode_bits); |
152 : | suxen_drol | 248 | |
153 : | suxen_drol | 252 | DPRINTF(DPRINTF_STARTCODE, "<video_packet_header>"); |
154 : | |||
155 : | suxen_drol | 631 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
156 : | { | ||
157 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
158 : | if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */)) | ||
159 : | { | ||
160 : | BitstreamSkip(bs, 13); /* vop_width */ | ||
161 : | READ_MARKER(); | ||
162 : | BitstreamSkip(bs, 13); /* vop_height */ | ||
163 : | READ_MARKER(); | ||
164 : | BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */ | ||
165 : | READ_MARKER(); | ||
166 : | BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */ | ||
167 : | READ_MARKER(); | ||
168 : | } | ||
169 : | } | ||
170 : | suxen_drol | 248 | |
171 : | suxen_drol | 631 | mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ |
172 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "mbnum %i", mbnum); |
173 : | suxen_drol | 248 | |
174 : | suxen_drol | 631 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
175 : | { | ||
176 : | suxen_drol | 727 | *quant = BitstreamGetBits(bs, dec->quant_bits); /* quant_scale */ |
177 : | suxen_drol | 631 | DPRINTF(DPRINTF_HEADER, "quant %i", *quant); |
178 : | } | ||
179 : | suxen_drol | 248 | |
180 : | suxen_drol | 631 | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
181 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
182 : | |||
183 : | |||
184 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "header_extension_code %i", hec); |
185 : | suxen_drol | 631 | if (hec) |
186 : | { | ||
187 : | int time_base; | ||
188 : | int time_increment; | ||
189 : | int coding_type; | ||
190 : | suxen_drol | 248 | |
191 : | suxen_drol | 631 | for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */ |
192 : | READ_MARKER(); | ||
193 : | if (dec->time_inc_bits) | ||
194 : | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ | ||
195 : | READ_MARKER(); | ||
196 : | DPRINTF(DPRINTF_HEADER,"time %i:%i", time_base, time_increment); | ||
197 : | |||
198 : | coding_type = BitstreamGetBits(bs, 2); | ||
199 : | DPRINTF(DPRINTF_HEADER,"coding_type %i", coding_type); | ||
200 : | |||
201 : | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) | ||
202 : | { | ||
203 : | BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ | ||
204 : | if (coding_type != I_VOP) | ||
205 : | BitstreamSkip(bs, 1); /* vop_shape_coding_type */ | ||
206 : | } | ||
207 : | |||
208 : | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) | ||
209 : | { | ||
210 : | *intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
211 : | |||
212 : | if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP && | ||
213 : | dec->sprite_warping_points > 0) | ||
214 : | { | ||
215 : | // TODO: sprite trajectory | ||
216 : | } | ||
217 : | if (dec->reduced_resolution_enable && | ||
218 : | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && | ||
219 : | (coding_type == P_VOP || coding_type == I_VOP)) | ||
220 : | { | ||
221 : | suxen_drol | 694 | BitstreamSkip(bs, 1); /* XXX: vop_reduced_resolution */ |
222 : | suxen_drol | 631 | } |
223 : | |||
224 : | if (coding_type != I_VOP && fcode_forward) | ||
225 : | { | ||
226 : | *fcode_forward = BitstreamGetBits(bs, 3); | ||
227 : | DPRINTF(DPRINTF_HEADER,"fcode_forward %i", *fcode_forward); | ||
228 : | } | ||
229 : | |||
230 : | if (coding_type == B_VOP && fcode_backward) | ||
231 : | { | ||
232 : | *fcode_backward = BitstreamGetBits(bs, 3); | ||
233 : | DPRINTF(DPRINTF_HEADER,"fcode_backward %i", fcode_backward); | ||
234 : | } | ||
235 : | } | ||
236 : | |||
237 : | } | ||
238 : | |||
239 : | if (dec->newpred_enable) | ||
240 : | { | ||
241 : | int vop_id; | ||
242 : | int vop_id_for_prediction; | ||
243 : | |||
244 : | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
245 : | DPRINTF(DPRINTF_HEADER, "vop_id %i", vop_id); | ||
246 : | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ | ||
247 : | { | ||
248 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
249 : | DPRINTF(DPRINTF_HEADER, "vop_id_for_prediction %i", vop_id_for_prediction); | ||
250 : | } | ||
251 : | READ_MARKER(); | ||
252 : | } | ||
253 : | |||
254 : | suxen_drol | 248 | return mbnum; |
255 : | } | ||
256 : | |||
257 : | |||
258 : | |||
259 : | suxen_drol | 694 | |
260 : | /* vol estimation header */ | ||
261 : | static void | ||
262 : | read_vol_complexity_estimation_header(Bitstream * bs, DECODER * dec) | ||
263 : | { | ||
264 : | ESTIMATION * e = &dec->estimation; | ||
265 : | |||
266 : | e->method = BitstreamGetBits(bs, 2); /* estimation_method */ | ||
267 : | DPRINTF(DPRINTF_HEADER,"+ complexity_estimation_header; method=%i", e->method); | ||
268 : | |||
269 : | if (e->method == 0 || e->method == 1) | ||
270 : | { | ||
271 : | if (!BitstreamGetBit(bs)) /* shape_complexity_estimation_disable */ | ||
272 : | { | ||
273 : | e->opaque = BitstreamGetBit(bs); /* opaque */ | ||
274 : | e->transparent = BitstreamGetBit(bs); /* transparent */ | ||
275 : | e->intra_cae = BitstreamGetBit(bs); /* intra_cae */ | ||
276 : | e->inter_cae = BitstreamGetBit(bs); /* inter_cae */ | ||
277 : | e->no_update = BitstreamGetBit(bs); /* no_update */ | ||
278 : | e->upsampling = BitstreamGetBit(bs); /* upsampling */ | ||
279 : | } | ||
280 : | |||
281 : | if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_1_disable */ | ||
282 : | { | ||
283 : | e->intra_blocks = BitstreamGetBit(bs); /* intra_blocks */ | ||
284 : | e->inter_blocks = BitstreamGetBit(bs); /* inter_blocks */ | ||
285 : | e->inter4v_blocks = BitstreamGetBit(bs); /* inter4v_blocks */ | ||
286 : | e->not_coded_blocks = BitstreamGetBit(bs); /* not_coded_blocks */ | ||
287 : | } | ||
288 : | } | ||
289 : | |||
290 : | READ_MARKER(); | ||
291 : | |||
292 : | if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_2_disable */ | ||
293 : | { | ||
294 : | e->dct_coefs = BitstreamGetBit(bs); /* dct_coefs */ | ||
295 : | e->dct_lines = BitstreamGetBit(bs); /* dct_lines */ | ||
296 : | e->vlc_symbols = BitstreamGetBit(bs); /* vlc_symbols */ | ||
297 : | e->vlc_bits = BitstreamGetBit(bs); /* vlc_bits */ | ||
298 : | } | ||
299 : | |||
300 : | if (!BitstreamGetBit(bs)) /* motion_compensation_complexity_disable */ | ||
301 : | { | ||
302 : | e->apm = BitstreamGetBit(bs); /* apm */ | ||
303 : | e->npm = BitstreamGetBit(bs); /* npm */ | ||
304 : | e->interpolate_mc_q = BitstreamGetBit(bs); /* interpolate_mc_q */ | ||
305 : | e->forw_back_mc_q = BitstreamGetBit(bs); /* forw_back_mc_q */ | ||
306 : | e->halfpel2 = BitstreamGetBit(bs); /* halfpel2 */ | ||
307 : | e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */ | ||
308 : | } | ||
309 : | |||
310 : | READ_MARKER(); | ||
311 : | |||
312 : | if (e->method == 1) | ||
313 : | { | ||
314 : | if (!BitstreamGetBit(bs)) /* version2_complexity_estimation_disable */ | ||
315 : | { | ||
316 : | e->sadct = BitstreamGetBit(bs); /* sadct */ | ||
317 : | e->quarterpel = BitstreamGetBit(bs); /* quarterpel */ | ||
318 : | } | ||
319 : | } | ||
320 : | } | ||
321 : | |||
322 : | |||
323 : | /* vop estimation header */ | ||
324 : | static void | ||
325 : | read_vop_complexity_estimation_header(Bitstream * bs, DECODER * dec, int coding_type) | ||
326 : | { | ||
327 : | ESTIMATION * e = &dec->estimation; | ||
328 : | |||
329 : | suxen_drol | 727 | if (e->method == 0 || e->method == 1) |
330 : | suxen_drol | 694 | { |
331 : | if (coding_type == I_VOP) { | ||
332 : | if (e->opaque) BitstreamSkip(bs, 8); /* dcecs_opaque */ | ||
333 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
334 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
335 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
336 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
337 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
338 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
339 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
340 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
341 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
342 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
343 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
344 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
345 : | } | ||
346 : | |||
347 : | if (coding_type == P_VOP) { | ||
348 : | if (e->opaque) BitstreamSkip(bs, 8); /* */ | ||
349 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
350 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
351 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
352 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
353 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
354 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
355 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
356 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
357 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
358 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
359 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
360 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
361 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
362 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
363 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
364 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
365 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
366 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
367 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
368 : | if (e->quarterpel) BitstreamSkip(bs, 8); /* */ | ||
369 : | } | ||
370 : | if (coding_type == B_VOP) { | ||
371 : | if (e->opaque) BitstreamSkip(bs, 8); /* */ | ||
372 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
373 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
374 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
375 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
376 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
377 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
378 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
379 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
380 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
381 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
382 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
383 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
384 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
385 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
386 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
387 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
388 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
389 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
390 : | if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ | ||
391 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
392 : | if (e->quarterpel) BitstreamSkip(bs, 8); /* */ | ||
393 : | } | ||
394 : | |||
395 : | if (coding_type == S_VOP && dec->sprite_enable == SPRITE_STATIC) { | ||
396 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
397 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
398 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
399 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
400 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
401 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
402 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
403 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
404 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
405 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
406 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
407 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
408 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
409 : | if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ | ||
410 : | } | ||
411 : | } | ||
412 : | } | ||
413 : | |||
414 : | |||
415 : | |||
416 : | |||
417 : | |||
418 : | Isibaar | 3 | /* |
419 : | decode headers | ||
420 : | returns coding_type, or -1 if error | ||
421 : | */ | ||
422 : | |||
423 : | suxen_drol | 252 | #define VIDOBJ_START_CODE_MASK 0x0000001f |
424 : | #define VIDOBJLAY_START_CODE_MASK 0x0000000f | ||
425 : | |||
426 : | edgomez | 195 | int |
427 : | BitstreamReadHeaders(Bitstream * bs, | ||
428 : | DECODER * dec, | ||
429 : | uint32_t * rounding, | ||
430 : | suxen_drol | 631 | uint32_t * reduced_resolution, |
431 : | edgomez | 195 | uint32_t * quant, |
432 : | uint32_t * fcode_forward, | ||
433 : | uint32_t * fcode_backward, | ||
434 : | suxen_drol | 631 | uint32_t * intra_dc_threshold, |
435 : | VECTOR * gmc_mv) | ||
436 : | Isibaar | 3 | { |
437 : | uint32_t vol_ver_id; | ||
438 : | uint32_t coding_type; | ||
439 : | uint32_t start_code; | ||
440 : | edgomez | 195 | uint32_t time_incr = 0; |
441 : | int32_t time_increment; | ||
442 : | suxen_drol | 631 | int resize = 0; |
443 : | chenm001 | 156 | |
444 : | edgomez | 195 | do { |
445 : | suxen_drol | 631 | |
446 : | Isibaar | 3 | BitstreamByteAlign(bs); |
447 : | start_code = BitstreamShowBits(bs, 32); | ||
448 : | |||
449 : | edgomez | 195 | if (start_code == VISOBJSEQ_START_CODE) { |
450 : | suxen_drol | 252 | |
451 : | int profile; | ||
452 : | |||
453 : | DPRINTF(DPRINTF_STARTCODE, "<visual_object_sequence>"); | ||
454 : | |||
455 : | edgomez | 195 | BitstreamSkip(bs, 32); // visual_object_sequence_start_code |
456 : | suxen_drol | 252 | profile = BitstreamGetBits(bs, 8); // profile_and_level_indication |
457 : | |||
458 : | DPRINTF(DPRINTF_HEADER, "profile_and_level_indication %i", profile); | ||
459 : | |||
460 : | edgomez | 195 | } else if (start_code == VISOBJSEQ_STOP_CODE) { |
461 : | suxen_drol | 252 | |
462 : | edgomez | 195 | BitstreamSkip(bs, 32); // visual_object_sequence_stop_code |
463 : | suxen_drol | 252 | |
464 : | DPRINTF(DPRINTF_STARTCODE, "</visual_object_sequence>"); | ||
465 : | |||
466 : | edgomez | 195 | } else if (start_code == VISOBJ_START_CODE) { |
467 : | suxen_drol | 252 | |
468 : | DPRINTF(DPRINTF_STARTCODE, "<visual_object>"); | ||
469 : | |||
470 : | edgomez | 195 | BitstreamSkip(bs, 32); // visual_object_start_code |
471 : | if (BitstreamGetBit(bs)) // is_visual_object_identified | ||
472 : | Isibaar | 3 | { |
473 : | edgomez | 195 | vol_ver_id = BitstreamGetBits(bs, 4); // visual_object_ver_id |
474 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); |
475 : | edgomez | 195 | BitstreamSkip(bs, 3); // visual_object_priority |
476 : | } else { | ||
477 : | Isibaar | 3 | vol_ver_id = 1; |
478 : | } | ||
479 : | |||
480 : | if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) // visual_object_type | ||
481 : | { | ||
482 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "visual_object_type != video"); |
483 : | Isibaar | 3 | return -1; |
484 : | } | ||
485 : | BitstreamSkip(bs, 4); | ||
486 : | |||
487 : | // video_signal_type | ||
488 : | |||
489 : | edgomez | 195 | if (BitstreamGetBit(bs)) // video_signal_type |
490 : | Isibaar | 3 | { |
491 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER,"+ video_signal_type"); |
492 : | edgomez | 195 | BitstreamSkip(bs, 3); // video_format |
493 : | BitstreamSkip(bs, 1); // video_range | ||
494 : | if (BitstreamGetBit(bs)) // color_description | ||
495 : | Isibaar | 3 | { |
496 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER,"+ color_description"); |
497 : | edgomez | 195 | BitstreamSkip(bs, 8); // color_primaries |
498 : | BitstreamSkip(bs, 8); // transfer_characteristics | ||
499 : | BitstreamSkip(bs, 8); // matrix_coefficients | ||
500 : | Isibaar | 3 | } |
501 : | } | ||
502 : | suxen_drol | 252 | } else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
503 : | |||
504 : | DPRINTF(DPRINTF_STARTCODE, "<video_object>"); | ||
505 : | DPRINTF(DPRINTF_HEADER, "vo id %i", start_code & VIDOBJ_START_CODE_MASK); | ||
506 : | |||
507 : | edgomez | 195 | BitstreamSkip(bs, 32); // video_object_start_code |
508 : | suxen_drol | 252 | |
509 : | } else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { | ||
510 : | |||
511 : | DPRINTF(DPRINTF_STARTCODE, "<video_object_layer>"); | ||
512 : | DPRINTF(DPRINTF_HEADER, "vol id %i", start_code & VIDOBJLAY_START_CODE_MASK); | ||
513 : | |||
514 : | edgomez | 195 | BitstreamSkip(bs, 32); // video_object_layer_start_code |
515 : | Isibaar | 3 | |
516 : | edgomez | 195 | BitstreamSkip(bs, 1); // random_accessible_vol |
517 : | Isibaar | 3 | |
518 : | // video_object_type_indication | ||
519 : | suxen_drol | 631 | if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && |
520 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && | ||
521 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && | ||
522 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_ACE && | ||
523 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_ART_SIMPLE && | ||
524 : | BitstreamShowBits(bs, 8) != 0) // BUGGY DIVX | ||
525 : | Isibaar | 3 | { |
526 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR,"video_object_type_indication %i not supported ", |
527 : | BitstreamShowBits(bs, 8)); | ||
528 : | Isibaar | 3 | return -1; |
529 : | } | ||
530 : | BitstreamSkip(bs, 8); | ||
531 : | |||
532 : | |||
533 : | edgomez | 195 | if (BitstreamGetBit(bs)) // is_object_layer_identifier |
534 : | Isibaar | 3 | { |
535 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "+ is_object_layer_identifier"); |
536 : | edgomez | 195 | vol_ver_id = BitstreamGetBits(bs, 4); // video_object_layer_verid |
537 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); |
538 : | edgomez | 195 | BitstreamSkip(bs, 3); // video_object_layer_priority |
539 : | } else { | ||
540 : | Isibaar | 3 | vol_ver_id = 1; |
541 : | } | ||
542 : | |||
543 : | suxen_drol | 631 | dec->aspect_ratio = BitstreamGetBits(bs, 4); |
544 : | |||
545 : | if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) // aspect_ratio_info | ||
546 : | Isibaar | 3 | { |
547 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "+ aspect_ratio_info"); |
548 : | suxen_drol | 631 | dec->par_width = BitstreamGetBits(bs, 8); // par_width |
549 : | dec->par_height = BitstreamGetBits(bs, 8); // par_height | ||
550 : | Isibaar | 3 | } |
551 : | |||
552 : | edgomez | 195 | if (BitstreamGetBit(bs)) // vol_control_parameters |
553 : | Isibaar | 3 | { |
554 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "+ vol_control_parameters"); |
555 : | edgomez | 195 | BitstreamSkip(bs, 2); // chroma_format |
556 : | dec->low_delay = BitstreamGetBit(bs); // low_delay | ||
557 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "low_delay %i", dec->low_delay); |
558 : | edgomez | 195 | if (BitstreamGetBit(bs)) // vbv_parameters |
559 : | Isibaar | 3 | { |
560 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER,"+ vbv_parameters"); |
561 : | edgomez | 195 | BitstreamSkip(bs, 15); // first_half_bitrate |
562 : | Isibaar | 3 | READ_MARKER(); |
563 : | edgomez | 195 | BitstreamSkip(bs, 15); // latter_half_bitrate |
564 : | Isibaar | 3 | READ_MARKER(); |
565 : | edgomez | 195 | BitstreamSkip(bs, 15); // first_half_vbv_buffer_size |
566 : | Isibaar | 3 | READ_MARKER(); |
567 : | edgomez | 195 | BitstreamSkip(bs, 3); // latter_half_vbv_buffer_size |
568 : | BitstreamSkip(bs, 11); // first_half_vbv_occupancy | ||
569 : | Isibaar | 3 | READ_MARKER(); |
570 : | edgomez | 195 | BitstreamSkip(bs, 15); // latter_half_vbv_occupancy |
571 : | Isibaar | 3 | READ_MARKER(); |
572 : | } | ||
573 : | suxen_drol | 707 | }else{ |
574 : | dec->low_delay = dec->low_delay_default; | ||
575 : | Isibaar | 3 | } |
576 : | |||
577 : | dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape | ||
578 : | suxen_drol | 631 | |
579 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "shape %i", dec->shape); |
580 : | suxen_drol | 631 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
581 : | { | ||
582 : | DPRINTF(DPRINTF_ERROR,"non-rectangular shapes are not supported"); | ||
583 : | } | ||
584 : | edgomez | 195 | |
585 : | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { | ||
586 : | BitstreamSkip(bs, 4); // video_object_layer_shape_extension | ||
587 : | Isibaar | 3 | } |
588 : | |||
589 : | READ_MARKER(); | ||
590 : | |||
591 : | chenm001 | 156 | // *************************** for decode B-frame time *********************** |
592 : | suxen_drol | 631 | dec->time_inc_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution |
593 : | DPRINTF(DPRINTF_HEADER,"vop_time_increment_resolution %i", dec->time_inc_resolution); | ||
594 : | suxen_drol | 252 | |
595 : | suxen_drol | 631 | // dec->time_inc_resolution--; |
596 : | suxen_drol | 252 | |
597 : | suxen_drol | 631 | if (dec->time_inc_resolution > 0) { |
598 : | dec->time_inc_bits = log2bin(dec->time_inc_resolution-1); | ||
599 : | edgomez | 195 | } else { |
600 : | Isibaar | 3 | // dec->time_inc_bits = 0; |
601 : | // for "old" xvid compatibility, set time_inc_bits = 1 | ||
602 : | dec->time_inc_bits = 1; | ||
603 : | } | ||
604 : | |||
605 : | READ_MARKER(); | ||
606 : | |||
607 : | edgomez | 195 | if (BitstreamGetBit(bs)) // fixed_vop_rate |
608 : | Isibaar | 3 | { |
609 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "+ fixed_vop_rate"); |
610 : | Isibaar | 3 | BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment |
611 : | } | ||
612 : | |||
613 : | edgomez | 195 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
614 : | Isibaar | 3 | |
615 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { |
616 : | Isibaar | 3 | uint32_t width, height; |
617 : | |||
618 : | READ_MARKER(); | ||
619 : | edgomez | 195 | width = BitstreamGetBits(bs, 13); // video_object_layer_width |
620 : | Isibaar | 3 | READ_MARKER(); |
621 : | edgomez | 195 | height = BitstreamGetBits(bs, 13); // video_object_layer_height |
622 : | Isibaar | 3 | READ_MARKER(); |
623 : | |||
624 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "width %i", width); |
625 : | DPRINTF(DPRINTF_HEADER, "height %i", height); | ||
626 : | |||
627 : | suxen_drol | 631 | if (dec->width != width || dec->height != height) |
628 : | { | ||
629 : | if (dec->fixed_dimensions) | ||
630 : | { | ||
631 : | DPRINTF(DPRINTF_ERROR, "XVID_DEC_PARAM width/height does not match bitstream"); | ||
632 : | return -1; | ||
633 : | } | ||
634 : | resize = 1; | ||
635 : | chenm001 | 294 | dec->width = width; |
636 : | dec->height = height; | ||
637 : | Isibaar | 3 | } |
638 : | } | ||
639 : | h | 69 | |
640 : | suxen_drol | 252 | dec->interlacing = BitstreamGetBit(bs); |
641 : | suxen_drol | 631 | DPRINTF(DPRINTF_HEADER, "interlacing %i", dec->interlacing); |
642 : | Isibaar | 3 | |
643 : | edgomez | 195 | if (!BitstreamGetBit(bs)) // obmc_disable |
644 : | Isibaar | 3 | { |
645 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "obmc_disabled==false not supported"); |
646 : | Isibaar | 3 | // TODO |
647 : | // fucking divx4.02 has this enabled | ||
648 : | } | ||
649 : | |||
650 : | suxen_drol | 631 | dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); // sprite_enable |
651 : | |||
652 : | if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC) | ||
653 : | Isibaar | 3 | { |
654 : | suxen_drol | 631 | int low_latency_sprite_enable; |
655 : | |||
656 : | if (dec->sprite_enable != SPRITE_GMC) | ||
657 : | { | ||
658 : | int sprite_width; | ||
659 : | int sprite_height; | ||
660 : | int sprite_left_coord; | ||
661 : | int sprite_top_coord; | ||
662 : | sprite_width = BitstreamGetBits(bs, 13); // sprite_width | ||
663 : | READ_MARKER(); | ||
664 : | sprite_height = BitstreamGetBits(bs, 13); // sprite_height | ||
665 : | READ_MARKER(); | ||
666 : | sprite_left_coord = BitstreamGetBits(bs, 13); // sprite_left_coordinate | ||
667 : | READ_MARKER(); | ||
668 : | sprite_top_coord = BitstreamGetBits(bs, 13); // sprite_top_coordinate | ||
669 : | READ_MARKER(); | ||
670 : | } | ||
671 : | dec->sprite_warping_points = BitstreamGetBits(bs, 6); // no_of_sprite_warping_points | ||
672 : | dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); // sprite_warping_accuracy | ||
673 : | dec->sprite_brightness_change = BitstreamGetBits(bs, 1); // brightness_change | ||
674 : | if (dec->sprite_enable != SPRITE_GMC) | ||
675 : | { | ||
676 : | low_latency_sprite_enable = BitstreamGetBits(bs, 1); // low_latency_sprite_enable | ||
677 : | } | ||
678 : | Isibaar | 3 | } |
679 : | edgomez | 195 | |
680 : | if (vol_ver_id != 1 && | ||
681 : | dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { | ||
682 : | BitstreamSkip(bs, 1); // sadct_disable | ||
683 : | Isibaar | 3 | } |
684 : | |||
685 : | edgomez | 195 | if (BitstreamGetBit(bs)) // not_8_bit |
686 : | Isibaar | 3 | { |
687 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "not_8_bit==true (ignored)"); |
688 : | Isibaar | 3 | dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision |
689 : | edgomez | 195 | BitstreamSkip(bs, 4); // bits_per_pixel |
690 : | } else { | ||
691 : | Isibaar | 3 | dec->quant_bits = 5; |
692 : | } | ||
693 : | |||
694 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
695 : | BitstreamSkip(bs, 1); // no_gray_quant_update | ||
696 : | BitstreamSkip(bs, 1); // composition_method | ||
697 : | BitstreamSkip(bs, 1); // linear_composition | ||
698 : | Isibaar | 3 | } |
699 : | |||
700 : | edgomez | 195 | dec->quant_type = BitstreamGetBit(bs); // quant_type |
701 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "quant_type %i", dec->quant_type); |
702 : | Isibaar | 3 | |
703 : | edgomez | 195 | if (dec->quant_type) { |
704 : | if (BitstreamGetBit(bs)) // load_intra_quant_mat | ||
705 : | Isibaar | 3 | { |
706 : | Isibaar | 20 | uint8_t matrix[64]; |
707 : | edgomez | 195 | |
708 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "load_intra_quant_mat"); |
709 : | |||
710 : | Isibaar | 4 | bs_get_matrix(bs, matrix); |
711 : | set_intra_matrix(matrix); | ||
712 : | edgomez | 195 | } else |
713 : | Isibaar | 20 | set_intra_matrix(get_default_intra_matrix()); |
714 : | Isibaar | 4 | |
715 : | edgomez | 195 | if (BitstreamGetBit(bs)) // load_inter_quant_mat |
716 : | Isibaar | 3 | { |
717 : | edgomez | 195 | uint8_t matrix[64]; |
718 : | suxen_drol | 252 | |
719 : | DPRINTF(DPRINTF_HEADER, "load_inter_quant_mat"); | ||
720 : | edgomez | 195 | |
721 : | Isibaar | 4 | bs_get_matrix(bs, matrix); |
722 : | set_inter_matrix(matrix); | ||
723 : | edgomez | 195 | } else |
724 : | Isibaar | 20 | set_inter_matrix(get_default_inter_matrix()); |
725 : | Isibaar | 3 | |
726 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
727 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "greyscale matrix not supported"); |
728 : | Isibaar | 3 | return -1; |
729 : | } | ||
730 : | Isibaar | 4 | |
731 : | Isibaar | 3 | } |
732 : | |||
733 : | edgomez | 195 | |
734 : | if (vol_ver_id != 1) { | ||
735 : | Isibaar | 333 | dec->quarterpel = BitstreamGetBit(bs); // quarter_sample |
736 : | suxen_drol | 631 | DPRINTF(DPRINTF_HEADER,"quarterpel %i", dec->quarterpel); |
737 : | Isibaar | 3 | } |
738 : | Isibaar | 333 | else |
739 : | dec->quarterpel = 0; | ||
740 : | |||
741 : | Isibaar | 3 | |
742 : | suxen_drol | 694 | dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */ |
743 : | if (!dec->complexity_estimation_disable) | ||
744 : | Isibaar | 3 | { |
745 : | suxen_drol | 694 | read_vol_complexity_estimation_header(bs, dec); |
746 : | Isibaar | 3 | } |
747 : | |||
748 : | suxen_drol | 252 | BitstreamSkip(bs, 1); // resync_marker_disable |
749 : | Isibaar | 3 | |
750 : | edgomez | 195 | if (BitstreamGetBit(bs)) // data_partitioned |
751 : | Isibaar | 3 | { |
752 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "data_partitioned not supported"); |
753 : | edgomez | 195 | BitstreamSkip(bs, 1); // reversible_vlc |
754 : | Isibaar | 3 | } |
755 : | |||
756 : | edgomez | 195 | if (vol_ver_id != 1) { |
757 : | suxen_drol | 631 | dec->newpred_enable = BitstreamGetBit(bs); |
758 : | if (dec->newpred_enable) // newpred_enable | ||
759 : | Isibaar | 3 | { |
760 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "+ newpred_enable"); |
761 : | edgomez | 195 | BitstreamSkip(bs, 2); // requested_upstream_message_type |
762 : | BitstreamSkip(bs, 1); // newpred_segment_type | ||
763 : | Isibaar | 3 | } |
764 : | suxen_drol | 694 | dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */ |
765 : | DPRINTF(DPRINTF_HEADER, "reduced_resolution_enable %i", dec->reduced_resolution_enable); | ||
766 : | Isibaar | 3 | } |
767 : | suxen_drol | 631 | else |
768 : | { | ||
769 : | dec->newpred_enable = 0; | ||
770 : | dec->reduced_resolution_enable = 0; | ||
771 : | } | ||
772 : | edgomez | 195 | |
773 : | suxen_drol | 694 | dec->scalability = BitstreamGetBit(bs); /* scalability */ |
774 : | if (dec->scalability) | ||
775 : | Isibaar | 3 | { |
776 : | suxen_drol | 252 | DPRINTF(DPRINTF_ERROR, "scalability not supported"); |
777 : | suxen_drol | 694 | BitstreamSkip(bs, 1); /* hierarchy_type */ |
778 : | BitstreamSkip(bs, 4); /* ref_layer_id */ | ||
779 : | BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */ | ||
780 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ | ||
781 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ | ||
782 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ | ||
783 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ | ||
784 : | BitstreamSkip(bs, 1); /* enhancement_type */ | ||
785 : | if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) { | ||
786 : | BitstreamSkip(bs, 1); /* use_ref_shape */ | ||
787 : | BitstreamSkip(bs, 1); /* use_ref_texture */ | ||
788 : | BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */ | ||
789 : | BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */ | ||
790 : | BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */ | ||
791 : | BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */ | ||
792 : | } | ||
793 : | Isibaar | 3 | return -1; |
794 : | } | ||
795 : | edgomez | 195 | } else // dec->shape == BINARY_ONLY |
796 : | Isibaar | 3 | { |
797 : | edgomez | 195 | if (vol_ver_id != 1) { |
798 : | suxen_drol | 694 | dec->scalability = BitstreamGetBit(bs); /* scalability */ |
799 : | if (dec->scalability) | ||
800 : | Isibaar | 3 | { |
801 : | suxen_drol | 694 | DPRINTF(DPRINTF_ERROR, "scalability not supported"); |
802 : | BitstreamSkip(bs, 4); /* ref_layer_id */ | ||
803 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ | ||
804 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ | ||
805 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ | ||
806 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ | ||
807 : | Isibaar | 3 | return -1; |
808 : | } | ||
809 : | } | ||
810 : | edgomez | 195 | BitstreamSkip(bs, 1); // resync_marker_disable |
811 : | Isibaar | 3 | |
812 : | } | ||
813 : | |||
814 : | suxen_drol | 631 | return (resize ? -3 : -2 ); /* VOL */ |
815 : | |||
816 : | edgomez | 195 | } else if (start_code == GRPOFVOP_START_CODE) { |
817 : | suxen_drol | 252 | |
818 : | DPRINTF(DPRINTF_STARTCODE, "<group_of_vop>"); | ||
819 : | |||
820 : | Isibaar | 3 | BitstreamSkip(bs, 32); |
821 : | { | ||
822 : | int hours, minutes, seconds; | ||
823 : | edgomez | 195 | |
824 : | Isibaar | 3 | hours = BitstreamGetBits(bs, 5); |
825 : | minutes = BitstreamGetBits(bs, 6); | ||
826 : | READ_MARKER(); | ||
827 : | seconds = BitstreamGetBits(bs, 6); | ||
828 : | suxen_drol | 252 | |
829 : | DPRINTF(DPRINTF_HEADER, "time %ih%im%is", hours); | ||
830 : | Isibaar | 3 | } |
831 : | edgomez | 195 | BitstreamSkip(bs, 1); // closed_gov |
832 : | BitstreamSkip(bs, 1); // broken_link | ||
833 : | suxen_drol | 252 | |
834 : | edgomez | 195 | } else if (start_code == VOP_START_CODE) { |
835 : | suxen_drol | 252 | |
836 : | DPRINTF(DPRINTF_STARTCODE, "<vop>"); | ||
837 : | |||
838 : | edgomez | 195 | BitstreamSkip(bs, 32); // vop_start_code |
839 : | Isibaar | 3 | |
840 : | edgomez | 195 | coding_type = BitstreamGetBits(bs, 2); // vop_coding_type |
841 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "coding_type %i", coding_type); |
842 : | Isibaar | 3 | |
843 : | chenm001 | 156 | // *************************** for decode B-frame time *********************** |
844 : | edgomez | 195 | while (BitstreamGetBit(bs) != 0) // time_base |
845 : | chenm001 | 156 | time_incr++; |
846 : | edgomez | 195 | |
847 : | Isibaar | 3 | READ_MARKER(); |
848 : | edgomez | 195 | |
849 : | if (dec->time_inc_bits) { | ||
850 : | chenm001 | 156 | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); // vop_time_increment |
851 : | Isibaar | 3 | } |
852 : | suxen_drol | 240 | |
853 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "time_base %i", time_incr); |
854 : | DPRINTF(DPRINTF_HEADER, "time_increment %i", time_increment); | ||
855 : | |||
856 : | DPRINTF(DPRINTF_TIMECODE, "%c %i:%i", | ||
857 : | suxen_drol | 631 | coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S', |
858 : | suxen_drol | 240 | time_incr, time_increment); |
859 : | |||
860 : | edgomez | 195 | if (coding_type != B_VOP) { |
861 : | dec->last_time_base = dec->time_base; | ||
862 : | chenm001 | 156 | dec->time_base += time_incr; |
863 : | chl | 316 | dec->time = time_increment; |
864 : | |||
865 : | suxen_drol | 631 | /* dec->time_base * dec->time_inc_resolution + |
866 : | edgomez | 195 | time_increment; |
867 : | chl | 316 | */ dec->time_pp = (uint32_t) |
868 : | suxen_drol | 631 | (dec->time_inc_resolution + dec->time - dec->last_non_b_time)%dec->time_inc_resolution; |
869 : | edgomez | 195 | dec->last_non_b_time = dec->time; |
870 : | } else { | ||
871 : | chl | 316 | dec->time = time_increment; |
872 : | /* | ||
873 : | edgomez | 195 | (dec->last_time_base + |
874 : | suxen_drol | 631 | time_incr) * dec->time_inc_resolution + time_increment; |
875 : | chl | 316 | */ |
876 : | chl | 313 | dec->time_bp = (uint32_t) |
877 : | suxen_drol | 631 | (dec->time_inc_resolution + dec->last_non_b_time - dec->time)%dec->time_inc_resolution; |
878 : | chenm001 | 156 | } |
879 : | suxen_drol | 707 | DPRINTF(DPRINTF_HEADER,"time_pp=%i", dec->time_pp); |
880 : | DPRINTF(DPRINTF_HEADER,"time_bp=%i", dec->time_bp); | ||
881 : | Isibaar | 3 | |
882 : | READ_MARKER(); | ||
883 : | |||
884 : | edgomez | 195 | if (!BitstreamGetBit(bs)) // vop_coded |
885 : | Isibaar | 3 | { |
886 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "vop_coded==false"); |
887 : | Isibaar | 3 | return N_VOP; |
888 : | } | ||
889 : | |||
890 : | suxen_drol | 631 | if (dec->newpred_enable) |
891 : | { | ||
892 : | int vop_id; | ||
893 : | int vop_id_for_prediction; | ||
894 : | |||
895 : | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
896 : | DPRINTF(DPRINTF_HEADER, "vop_id %i", vop_id); | ||
897 : | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ | ||
898 : | { | ||
899 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
900 : | DPRINTF(DPRINTF_HEADER, "vop_id_for_prediction %i", vop_id_for_prediction); | ||
901 : | } | ||
902 : | READ_MARKER(); | ||
903 : | } | ||
904 : | Isibaar | 3 | |
905 : | suxen_drol | 631 | |
906 : | |||
907 : | chenm001 | 156 | // fix a little bug by MinChen <chenm002@163.com> |
908 : | edgomez | 195 | if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
909 : | suxen_drol | 631 | ( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) { |
910 : | Isibaar | 3 | *rounding = BitstreamGetBit(bs); // rounding_type |
911 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "rounding %i", *rounding); |
912 : | Isibaar | 3 | } |
913 : | |||
914 : | suxen_drol | 631 | if (dec->reduced_resolution_enable && |
915 : | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && | ||
916 : | (coding_type == P_VOP || coding_type == I_VOP)) { | ||
917 : | Isibaar | 3 | |
918 : | suxen_drol | 631 | *reduced_resolution = BitstreamGetBit(bs); |
919 : | suxen_drol | 694 | DPRINTF(DPRINTF_HEADER, "reduced_resolution %i", *reduced_resolution); |
920 : | suxen_drol | 631 | } |
921 : | else | ||
922 : | { | ||
923 : | *reduced_resolution = 0; | ||
924 : | } | ||
925 : | |||
926 : | edgomez | 195 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
927 : | suxen_drol | 631 | if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) { |
928 : | edgomez | 195 | |
929 : | suxen_drol | 631 | uint32_t width, height; |
930 : | uint32_t horiz_mc_ref, vert_mc_ref; | ||
931 : | Isibaar | 3 | |
932 : | suxen_drol | 631 | width = BitstreamGetBits(bs, 13); |
933 : | READ_MARKER(); | ||
934 : | height = BitstreamGetBits(bs, 13); | ||
935 : | READ_MARKER(); | ||
936 : | horiz_mc_ref = BitstreamGetBits(bs, 13); | ||
937 : | READ_MARKER(); | ||
938 : | vert_mc_ref = BitstreamGetBits(bs, 13); | ||
939 : | READ_MARKER(); | ||
940 : | Isibaar | 3 | |
941 : | suxen_drol | 631 | DPRINTF(DPRINTF_HEADER, "width %i", width); |
942 : | DPRINTF(DPRINTF_HEADER, "height %i", height); | ||
943 : | DPRINTF(DPRINTF_HEADER, "horiz_mc_ref %i", horiz_mc_ref); | ||
944 : | DPRINTF(DPRINTF_HEADER, "vert_mc_ref %i", vert_mc_ref); | ||
945 : | } | ||
946 : | |||
947 : | edgomez | 195 | BitstreamSkip(bs, 1); // change_conv_ratio_disable |
948 : | if (BitstreamGetBit(bs)) // vop_constant_alpha | ||
949 : | Isibaar | 3 | { |
950 : | edgomez | 195 | BitstreamSkip(bs, 8); // vop_constant_alpha_value |
951 : | Isibaar | 3 | } |
952 : | } | ||
953 : | |||
954 : | edgomez | 195 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
955 : | suxen_drol | 694 | |
956 : | if (!dec->complexity_estimation_disable) | ||
957 : | { | ||
958 : | read_vop_complexity_estimation_header(bs, dec, coding_type); | ||
959 : | } | ||
960 : | |||
961 : | Isibaar | 3 | // intra_dc_vlc_threshold |
962 : | edgomez | 195 | *intra_dc_threshold = |
963 : | intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
964 : | Isibaar | 3 | |
965 : | h | 543 | dec->top_field_first = 0; |
966 : | dec->alternate_vertical_scan = 0; | ||
967 : | |||
968 : | edgomez | 195 | if (dec->interlacing) { |
969 : | suxen_drol | 252 | dec->top_field_first = BitstreamGetBit(bs); |
970 : | DPRINTF(DPRINTF_HEADER, "interlace top_field_first %i", dec->top_field_first); | ||
971 : | dec->alternate_vertical_scan = BitstreamGetBit(bs); | ||
972 : | DPRINTF(DPRINTF_HEADER, "interlace alternate_vertical_scan %i", dec->alternate_vertical_scan); | ||
973 : | |||
974 : | h | 69 | } |
975 : | Isibaar | 3 | } |
976 : | edgomez | 195 | |
977 : | suxen_drol | 631 | if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) { |
978 : | |||
979 : | int i; | ||
980 : | |||
981 : | for (i = 0 ; i < dec->sprite_warping_points; i++) | ||
982 : | { | ||
983 : | int length; | ||
984 : | int x = 0, y = 0; | ||
985 : | |||
986 : | /* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */ | ||
987 : | length = bs_get_spritetrajectory(bs); | ||
988 : | if(length){ | ||
989 : | x= BitstreamGetBits(bs, length); | ||
990 : | if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
991 : | x = - (x ^ ((1 << length) - 1)); | ||
992 : | } | ||
993 : | READ_MARKER(); | ||
994 : | |||
995 : | length = bs_get_spritetrajectory(bs); | ||
996 : | if(length){ | ||
997 : | y = BitstreamGetBits(bs, length); | ||
998 : | if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
999 : | y = - (y ^ ((1 << length) - 1)); | ||
1000 : | } | ||
1001 : | READ_MARKER(); | ||
1002 : | |||
1003 : | gmc_mv[i].x = x; | ||
1004 : | gmc_mv[i].y = y; | ||
1005 : | |||
1006 : | DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i)", i, x, y); | ||
1007 : | } | ||
1008 : | |||
1009 : | if (dec->sprite_brightness_change) | ||
1010 : | { | ||
1011 : | // XXX: brightness_change_factor() | ||
1012 : | } | ||
1013 : | if (dec->sprite_enable == SPRITE_STATIC) | ||
1014 : | { | ||
1015 : | // XXX: todo | ||
1016 : | } | ||
1017 : | |||
1018 : | } | ||
1019 : | |||
1020 : | edgomez | 195 | if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) // vop_quant |
1021 : | Isibaar | 157 | *quant = 1; |
1022 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "quant %i", *quant); |
1023 : | edgomez | 195 | |
1024 : | if (coding_type != I_VOP) { | ||
1025 : | *fcode_forward = BitstreamGetBits(bs, 3); // fcode_forward | ||
1026 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "fcode_forward %i", *fcode_forward); |
1027 : | Isibaar | 3 | } |
1028 : | edgomez | 195 | |
1029 : | if (coding_type == B_VOP) { | ||
1030 : | *fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward | ||
1031 : | suxen_drol | 252 | DPRINTF(DPRINTF_HEADER, "fcode_backward %i", *fcode_backward); |
1032 : | Isibaar | 3 | } |
1033 : | edgomez | 195 | if (!dec->scalability) { |
1034 : | if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && | ||
1035 : | (coding_type != I_VOP)) { | ||
1036 : | BitstreamSkip(bs, 1); // vop_shape_coding_type | ||
1037 : | chenm001 | 156 | } |
1038 : | } | ||
1039 : | Isibaar | 3 | return coding_type; |
1040 : | suxen_drol | 252 | |
1041 : | edgomez | 195 | } else if (start_code == USERDATA_START_CODE) { |
1042 : | Isibaar | 645 | char tmp[256]; |
1043 : | suxen_drol | 698 | int i, version, build; |
1044 : | char packed; | ||
1045 : | suxen_drol | 252 | |
1046 : | edgomez | 195 | BitstreamSkip(bs, 32); // user_data_start_code |
1047 : | suxen_drol | 252 | |
1048 : | Isibaar | 645 | tmp[0] = BitstreamShowBits(bs, 8); |
1049 : | |||
1050 : | for(i = 1; i < 256; i++){ | ||
1051 : | tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF); | ||
1052 : | |||
1053 : | if(tmp[i] == 0) | ||
1054 : | break; | ||
1055 : | |||
1056 : | BitstreamSkip(bs, 8); | ||
1057 : | } | ||
1058 : | |||
1059 : | DPRINTF(DPRINTF_STARTCODE, "<user_data>: %s\n", tmp); | ||
1060 : | |||
1061 : | suxen_drol | 694 | /* divx detection */ |
1062 : | i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed); | ||
1063 : | if (i < 2) | ||
1064 : | i = sscanf(tmp, "DivX%db%d%c", &version, &build, &packed); | ||
1065 : | |||
1066 : | if (i >= 2) | ||
1067 : | { | ||
1068 : | dec->packed_mode = (i == 3 && packed == 'p'); | ||
1069 : | DPRINTF(DPRINTF_HEADER, "divx version=%i, build=%i packed=%i", | ||
1070 : | version, build, dec->packed_mode); | ||
1071 : | } | ||
1072 : | Isibaar | 645 | |
1073 : | edgomez | 195 | } else // start_code == ? |
1074 : | Isibaar | 3 | { |
1075 : | edgomez | 195 | if (BitstreamShowBits(bs, 24) == 0x000001) { |
1076 : | suxen_drol | 252 | DPRINTF(DPRINTF_STARTCODE, "<unknown: %x>", BitstreamShowBits(bs, 32)); |
1077 : | Isibaar | 3 | } |
1078 : | BitstreamSkip(bs, 8); | ||
1079 : | } | ||
1080 : | } | ||
1081 : | while ((BitstreamPos(bs) >> 3) < bs->length); | ||
1082 : | |||
1083 : | suxen_drol | 233 | //DPRINTF("*** WARNING: no vop_start_code found"); |
1084 : | edgomez | 195 | return -1; /* ignore it */ |
1085 : | Isibaar | 3 | } |
1086 : | |||
1087 : | |||
1088 : | /* write custom quant matrix */ | ||
1089 : | |||
1090 : | edgomez | 195 | static void |
1091 : | bs_put_matrix(Bitstream * bs, | ||
1092 : | const int16_t * matrix) | ||
1093 : | Isibaar | 3 | { |
1094 : | int i, j; | ||
1095 : | const int last = matrix[scan_tables[0][63]]; | ||
1096 : | |||
1097 : | suxen_drol | 233 | for (j = 63; j > 0 && matrix[scan_tables[0][j - 1]] == last; j--); |
1098 : | Isibaar | 3 | |
1099 : | edgomez | 195 | for (i = 0; i <= j; i++) { |
1100 : | Isibaar | 3 | BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
1101 : | } | ||
1102 : | |||
1103 : | edgomez | 195 | if (j < 63) { |
1104 : | Isibaar | 3 | BitstreamPutBits(bs, 0, 8); |
1105 : | } | ||
1106 : | } | ||
1107 : | |||
1108 : | |||
1109 : | /* | ||
1110 : | write vol header | ||
1111 : | */ | ||
1112 : | edgomez | 195 | void |
1113 : | BitstreamWriteVolHeader(Bitstream * const bs, | ||
1114 : | const MBParam * pParam, | ||
1115 : | chl | 619 | const FRAMEINFO * const frame) |
1116 : | Isibaar | 3 | { |
1117 : | suxen_drol | 727 | static const vo_id = 0; |
1118 : | static const vol_id = 0; | ||
1119 : | chl | 619 | int vol_ver_id=1; |
1120 : | |||
1121 : | suxen_drol | 701 | if ( pParam->m_quarterpel || (frame->global_flags & XVID_GMC) || |
1122 : | (pParam->global & XVID_GLOBAL_REDUCED)) | ||
1123 : | chl | 619 | vol_ver_id = 2; |
1124 : | |||
1125 : | Isibaar | 3 | // video object_start_code & vo_id |
1126 : | edgomez | 195 | BitstreamPad(bs); |
1127 : | suxen_drol | 727 | BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32); |
1128 : | Isibaar | 3 | |
1129 : | // video_object_layer_start_code & vol_id | ||
1130 : | suxen_drol | 727 | BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32); |
1131 : | Isibaar | 3 | |
1132 : | edgomez | 195 | BitstreamPutBit(bs, 0); // random_accessible_vol |
1133 : | BitstreamPutBits(bs, 0, 8); // video_object_type_indication | ||
1134 : | Isibaar | 579 | |
1135 : | chl | 619 | if (vol_ver_id == 1) |
1136 : | Isibaar | 579 | { |
1137 : | BitstreamPutBit(bs, 0); // is_object_layer_identified (0=not given) | ||
1138 : | } | ||
1139 : | else | ||
1140 : | { | ||
1141 : | BitstreamPutBit(bs, 1); // is_object_layer_identified | ||
1142 : | chl | 619 | BitstreamPutBits(bs, vol_ver_id, 4); // vol_ver_id == 2 |
1143 : | BitstreamPutBits(bs, 4, 3); // vol_ver_priority (1==lowest, 7==highest) ?? | ||
1144 : | Isibaar | 579 | } |
1145 : | |||
1146 : | edgomez | 195 | BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1) |
1147 : | suxen_drol | 164 | |
1148 : | chl | 387 | BitstreamPutBit(bs, 1); // vol_control_parameters |
1149 : | BitstreamPutBits(bs, 1, 2); // chroma_format 1="4:2:0" | ||
1150 : | |||
1151 : | edgomez | 195 | if (pParam->max_bframes > 0) { |
1152 : | BitstreamPutBit(bs, 0); // low_delay | ||
1153 : | } else | ||
1154 : | suxen_drol | 164 | { |
1155 : | chl | 386 | BitstreamPutBit(bs, 1); // low_delay |
1156 : | suxen_drol | 164 | } |
1157 : | chl | 387 | BitstreamPutBit(bs, 0); // vbv_parameters (0=not given) |
1158 : | suxen_drol | 164 | |
1159 : | edgomez | 195 | BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) |
1160 : | Isibaar | 3 | |
1161 : | WRITE_MARKER(); | ||
1162 : | edgomez | 195 | |
1163 : | suxen_drol | 631 | /* time_inc_resolution; ignored by current decore versions |
1164 : | edgomez | 195 | eg. 2fps res=2 inc=1 |
1165 : | 25fps res=25 inc=1 | ||
1166 : | 29.97fps res=30000 inc=1001 | ||
1167 : | */ | ||
1168 : | suxen_drol | 163 | BitstreamPutBits(bs, pParam->fbase, 16); |
1169 : | Isibaar | 3 | |
1170 : | WRITE_MARKER(); | ||
1171 : | |||
1172 : | suxen_drol | 241 | BitstreamPutBit(bs, 1); // fixed_vop_rate = 1 |
1173 : | BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); // fixed_vop_time_increment | ||
1174 : | Isibaar | 3 | |
1175 : | WRITE_MARKER(); | ||
1176 : | edgomez | 195 | BitstreamPutBits(bs, pParam->width, 13); // width |
1177 : | Isibaar | 3 | WRITE_MARKER(); |
1178 : | edgomez | 195 | BitstreamPutBits(bs, pParam->height, 13); // height |
1179 : | Isibaar | 3 | WRITE_MARKER(); |
1180 : | edgomez | 195 | |
1181 : | BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); // interlace | ||
1182 : | Isibaar | 3 | BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) |
1183 : | Isibaar | 579 | |
1184 : | chl | 619 | if (vol_ver_id != 1) |
1185 : | { if (frame->global_flags & XVID_GMC) | ||
1186 : | { BitstreamPutBits(bs, 2, 2); // sprite_enable=='GMC' | ||
1187 : | BitstreamPutBits(bs, 2, 6); // no_of_sprite_warping_points | ||
1188 : | BitstreamPutBits(bs, 3, 2); // sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 | ||
1189 : | BitstreamPutBit(bs, 0); // sprite_brightness_change (not supported) | ||
1190 : | |||
1191 : | /* currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3 | ||
1192 : | for DivX5 compatability */ | ||
1193 : | |||
1194 : | } else | ||
1195 : | BitstreamPutBits(bs, 0, 2); // sprite_enable==off | ||
1196 : | Isibaar | 579 | } |
1197 : | else | ||
1198 : | chl | 619 | BitstreamPutBit(bs, 0); // sprite_enable==off |
1199 : | Isibaar | 579 | |
1200 : | chl | 619 | BitstreamPutBit(bs, 0); // not_8_bit |
1201 : | Isibaar | 3 | |
1202 : | // quant_type 0=h.263 1=mpeg4(quantizer tables) | ||
1203 : | suxen_drol | 136 | BitstreamPutBit(bs, pParam->m_quant_type); |
1204 : | edgomez | 195 | |
1205 : | if (pParam->m_quant_type) { | ||
1206 : | Isibaar | 4 | BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
1207 : | edgomez | 195 | if (get_intra_matrix_status()) { |
1208 : | Isibaar | 4 | bs_put_matrix(bs, get_intra_matrix()); |
1209 : | Isibaar | 3 | } |
1210 : | |||
1211 : | edgomez | 195 | BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat |
1212 : | if (get_inter_matrix_status()) { | ||
1213 : | Isibaar | 4 | bs_put_matrix(bs, get_inter_matrix()); |
1214 : | Isibaar | 3 | } |
1215 : | |||
1216 : | } | ||
1217 : | |||
1218 : | chl | 619 | if (vol_ver_id != 1) { |
1219 : | if (pParam->m_quarterpel) | ||
1220 : | BitstreamPutBit(bs, 1); // quarterpel | ||
1221 : | else | ||
1222 : | BitstreamPutBit(bs, 0); // no quarterpel | ||
1223 : | Isibaar | 579 | } |
1224 : | |||
1225 : | Isibaar | 3 | BitstreamPutBit(bs, 1); // complexity_estimation_disable |
1226 : | BitstreamPutBit(bs, 1); // resync_marker_disable | ||
1227 : | BitstreamPutBit(bs, 0); // data_partitioned | ||
1228 : | Isibaar | 579 | |
1229 : | chl | 619 | if (vol_ver_id != 1) |
1230 : | Isibaar | 579 | { |
1231 : | BitstreamPutBit(bs, 0); // newpred_enable | ||
1232 : | suxen_drol | 701 | |
1233 : | BitstreamPutBit(bs, (pParam->global & XVID_GLOBAL_REDUCED)?1:0); | ||
1234 : | /* reduced_resolution_vop_enabled */ | ||
1235 : | Isibaar | 579 | } |
1236 : | chl | 619 | |
1237 : | BitstreamPutBit(bs, 0); // scalability | ||
1238 : | Isibaar | 579 | |
1239 : | Isibaar | 3 | } |
1240 : | |||
1241 : | |||
1242 : | /* | ||
1243 : | write vop header | ||
1244 : | */ | ||
1245 : | edgomez | 195 | void |
1246 : | suxen_drol | 701 | BitstreamWriteVopHeader( |
1247 : | Bitstream * const bs, | ||
1248 : | edgomez | 195 | const MBParam * pParam, |
1249 : | chl | 619 | const FRAMEINFO * const frame, |
1250 : | suxen_drol | 229 | int vop_coded) |
1251 : | Isibaar | 3 | { |
1252 : | suxen_drol | 152 | uint32_t i; |
1253 : | chl | 387 | |
1254 : | edgomez | 195 | BitstreamPad(bs); |
1255 : | BitstreamPutBits(bs, VOP_START_CODE, 32); | ||
1256 : | Isibaar | 3 | |
1257 : | edgomez | 195 | BitstreamPutBits(bs, frame->coding_type, 2); |
1258 : | suxen_drol | 631 | DPRINTF(DPRINTF_HEADER, "coding_type = %i", frame->coding_type); |
1259 : | edgomez | 195 | |
1260 : | for (i = 0; i < frame->seconds; i++) { | ||
1261 : | suxen_drol | 152 | BitstreamPutBit(bs, 1); |
1262 : | } | ||
1263 : | BitstreamPutBit(bs, 0); | ||
1264 : | Isibaar | 3 | |
1265 : | WRITE_MARKER(); | ||
1266 : | |||
1267 : | // time_increment: value=nth_of_sec, nbits = log2(resolution) | ||
1268 : | chl | 619 | |
1269 : | edgomez | 195 | BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
1270 : | suxen_drol | 631 | /*DPRINTF("[%i:%i] %c", frame->seconds, frame->ticks, |
1271 : | edgomez | 195 | frame->coding_type == I_VOP ? 'I' : frame->coding_type == |
1272 : | suxen_drol | 252 | P_VOP ? 'P' : 'B');*/ |
1273 : | Isibaar | 3 | |
1274 : | WRITE_MARKER(); | ||
1275 : | |||
1276 : | suxen_drol | 229 | if (!vop_coded) { |
1277 : | BitstreamPutBits(bs, 0, 1); | ||
1278 : | return; | ||
1279 : | } | ||
1280 : | |||
1281 : | edgomez | 195 | BitstreamPutBits(bs, 1, 1); // vop_coded |
1282 : | Isibaar | 3 | |
1283 : | chl | 619 | if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
1284 : | suxen_drol | 136 | BitstreamPutBits(bs, frame->rounding_type, 1); |
1285 : | Isibaar | 3 | |
1286 : | suxen_drol | 701 | if ((pParam->global & XVID_GLOBAL_REDUCED)) |
1287 : | BitstreamPutBit(bs, (frame->global_flags & XVID_REDUCED)?1:0); | ||
1288 : | |||
1289 : | edgomez | 195 | BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
1290 : | |||
1291 : | if (frame->global_flags & XVID_INTERLACING) { | ||
1292 : | h | 543 | BitstreamPutBit(bs, (frame->global_flags & XVID_TOPFIELDFIRST)); |
1293 : | BitstreamPutBit(bs, (frame->global_flags & XVID_ALTERNATESCAN)); | ||
1294 : | h | 69 | } |
1295 : | chl | 619 | |
1296 : | if (frame->coding_type == S_VOP) { | ||
1297 : | if (1) { // no_of_sprite_warping_points>=1 | ||
1298 : | if (pParam->m_quarterpel) | ||
1299 : | bs_put_spritetrajectory(bs, frame->GMC_MV.x/2 ); // du[0] | ||
1300 : | else | ||
1301 : | bs_put_spritetrajectory(bs, frame->GMC_MV.x ); // du[0] | ||
1302 : | WRITE_MARKER(); | ||
1303 : | |||
1304 : | if (pParam->m_quarterpel) | ||
1305 : | bs_put_spritetrajectory(bs, frame->GMC_MV.y/2 ); // dv[0] | ||
1306 : | else | ||
1307 : | bs_put_spritetrajectory(bs, frame->GMC_MV.y ); // dv[0] | ||
1308 : | WRITE_MARKER(); | ||
1309 : | suxen_drol | 631 | |
1310 : | |||
1311 : | if (pParam->m_quarterpel) | ||
1312 : | { | ||
1313 : | DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i) *QPEL*", 0, frame->GMC_MV.x/2, frame->GMC_MV.y/2); | ||
1314 : | } | ||
1315 : | else | ||
1316 : | { | ||
1317 : | DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i)", 0, frame->GMC_MV.x, frame->GMC_MV.y); | ||
1318 : | } | ||
1319 : | |||
1320 : | chl | 619 | } |
1321 : | /* GMC is halfpel in bitstream, even though GMC_MV was pseudo-qpel (2*halfpel) */ | ||
1322 : | h | 69 | |
1323 : | chl | 619 | if (2) { // no_of_sprite_warping_points>=2 (for DivX5 compat) |
1324 : | bs_put_spritetrajectory(bs, 0 ); | ||
1325 : | WRITE_MARKER(); | ||
1326 : | bs_put_spritetrajectory(bs, 0 ); | ||
1327 : | WRITE_MARKER(); | ||
1328 : | } | ||
1329 : | // no support for brightness_change! | ||
1330 : | } | ||
1331 : | |||
1332 : | suxen_drol | 694 | |
1333 : | DPRINTF(DPRINTF_HEADER, "quant = %i", frame->quant); | ||
1334 : | |||
1335 : | edgomez | 195 | BitstreamPutBits(bs, frame->quant, 5); // quantizer |
1336 : | |||
1337 : | suxen_drol | 136 | if (frame->coding_type != I_VOP) |
1338 : | edgomez | 195 | BitstreamPutBits(bs, frame->fcode, 3); // forward_fixed_code |
1339 : | suxen_drol | 152 | |
1340 : | if (frame->coding_type == B_VOP) | ||
1341 : | edgomez | 195 | BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code |
1342 : | suxen_drol | 152 | |
1343 : | Isibaar | 3 | } |
1344 : | suxen_drol | 229 | |
1345 : | void | ||
1346 : | BitstreamWriteUserData(Bitstream * const bs, | ||
1347 : | uint8_t * data, | ||
1348 : | const int length) | ||
1349 : | { | ||
1350 : | int i; | ||
1351 : | |||
1352 : | BitstreamPad(bs); | ||
1353 : | BitstreamPutBits(bs, USERDATA_START_CODE, 32); | ||
1354 : | |||
1355 : | for (i = 0; i < length; i++) { | ||
1356 : | BitstreamPutBits(bs, data[i], 8); | ||
1357 : | } | ||
1358 : | |||
1359 : | chl | 313 | } |
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