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Revision 1.48 - (view) (download)
1 : | edgomez | 1.42 | /***************************************************************************** |
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 : | syskin | 1.48 | * $Id: bitstream.c,v 1.47 2004/10/03 16:20:51 syskin Exp $ |
24 : | edgomez | 1.42 | * |
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 : | int n = 0; | ||
40 : | edgomez | 1.14 | |
41 : | while (value) { | ||
42 : | Isibaar | 1.1 | value >>= 1; |
43 : | n++; | ||
44 : | } | ||
45 : | return n; | ||
46 : | } | ||
47 : | |||
48 : | |||
49 : | edgomez | 1.14 | static const uint32_t intra_dc_threshold_table[] = { |
50 : | 32, /* never use */ | ||
51 : | Isibaar | 1.1 | 13, |
52 : | 15, | ||
53 : | 17, | ||
54 : | 19, | ||
55 : | 21, | ||
56 : | 23, | ||
57 : | 1, | ||
58 : | }; | ||
59 : | |||
60 : | |||
61 : | edgomez | 1.14 | void |
62 : | bs_get_matrix(Bitstream * bs, | ||
63 : | uint8_t * matrix) | ||
64 : | { | ||
65 : | int i = 0; | ||
66 : | int last, value = 0; | ||
67 : | |||
68 : | do { | ||
69 : | last = value; | ||
70 : | value = BitstreamGetBits(bs, 8); | ||
71 : | matrix[scan_tables[0][i++]] = value; | ||
72 : | } | ||
73 : | while (value != 0 && i < 64); | ||
74 : | |||
75 : | syskin | 1.45 | if (value != 0) return; |
76 : | |||
77 : | i--; | ||
78 : | edgomez | 1.14 | while (i < 64) { |
79 : | matrix[scan_tables[0][i++]] = last; | ||
80 : | } | ||
81 : | } | ||
82 : | Isibaar | 1.2 | |
83 : | suxen_drol | 1.21 | |
84 : | |||
85 : | edgomez | 1.42 | /* |
86 : | * for PVOP addbits == fcode - 1 | ||
87 : | * for BVOP addbits == max(fcode,bcode) - 1 | ||
88 : | * returns mbpos | ||
89 : | */ | ||
90 : | suxen_drol | 1.21 | int |
91 : | edgomez | 1.42 | read_video_packet_header(Bitstream *bs, |
92 : | DECODER * dec, | ||
93 : | const int addbits, | ||
94 : | int * quant, | ||
95 : | edgomez | 1.38 | int * fcode_forward, |
96 : | int * fcode_backward, | ||
97 : | int * intra_dc_threshold) | ||
98 : | suxen_drol | 1.21 | { |
99 : | edgomez | 1.38 | int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits; |
100 : | int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1); | ||
101 : | suxen_drol | 1.21 | int mbnum; |
102 : | edgomez | 1.38 | int hec = 0; |
103 : | suxen_drol | 1.21 | |
104 : | BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); | ||
105 : | edgomez | 1.38 | BitstreamSkip(bs, startcode_bits); |
106 : | suxen_drol | 1.21 | |
107 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_STARTCODE, "<video_packet_header>\n"); |
108 : | suxen_drol | 1.22 | |
109 : | edgomez | 1.38 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
110 : | { | ||
111 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
112 : | edgomez | 1.42 | if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */)) |
113 : | edgomez | 1.38 | { |
114 : | BitstreamSkip(bs, 13); /* vop_width */ | ||
115 : | READ_MARKER(); | ||
116 : | BitstreamSkip(bs, 13); /* vop_height */ | ||
117 : | READ_MARKER(); | ||
118 : | BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */ | ||
119 : | READ_MARKER(); | ||
120 : | BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */ | ||
121 : | READ_MARKER(); | ||
122 : | } | ||
123 : | } | ||
124 : | |||
125 : | mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ | ||
126 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "mbnum %i\n", mbnum); |
127 : | suxen_drol | 1.21 | |
128 : | edgomez | 1.38 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
129 : | { | ||
130 : | edgomez | 1.42 | *quant = BitstreamGetBits(bs, dec->quant_bits); /* quant_scale */ |
131 : | DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant); | ||
132 : | edgomez | 1.38 | } |
133 : | suxen_drol | 1.21 | |
134 : | edgomez | 1.38 | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
135 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
136 : | suxen_drol | 1.21 | |
137 : | |||
138 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "header_extension_code %i\n", hec); |
139 : | edgomez | 1.38 | if (hec) |
140 : | { | ||
141 : | int time_base; | ||
142 : | int time_increment; | ||
143 : | int coding_type; | ||
144 : | |||
145 : | for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */ | ||
146 : | READ_MARKER(); | ||
147 : | if (dec->time_inc_bits) | ||
148 : | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ | ||
149 : | READ_MARKER(); | ||
150 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"time %i:%i\n", time_base, time_increment); |
151 : | edgomez | 1.38 | |
152 : | coding_type = BitstreamGetBits(bs, 2); | ||
153 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"coding_type %i\n", coding_type); |
154 : | |||
155 : | edgomez | 1.38 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
156 : | { | ||
157 : | BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ | ||
158 : | if (coding_type != I_VOP) | ||
159 : | BitstreamSkip(bs, 1); /* vop_shape_coding_type */ | ||
160 : | } | ||
161 : | |||
162 : | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) | ||
163 : | { | ||
164 : | *intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
165 : | |||
166 : | if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP && | ||
167 : | dec->sprite_warping_points > 0) | ||
168 : | { | ||
169 : | edgomez | 1.42 | /* TODO: sprite trajectory */ |
170 : | edgomez | 1.38 | } |
171 : | edgomez | 1.42 | if (dec->reduced_resolution_enable && |
172 : | edgomez | 1.38 | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
173 : | (coding_type == P_VOP || coding_type == I_VOP)) | ||
174 : | { | ||
175 : | BitstreamSkip(bs, 1); /* XXX: vop_reduced_resolution */ | ||
176 : | } | ||
177 : | |||
178 : | if (coding_type != I_VOP && fcode_forward) | ||
179 : | { | ||
180 : | *fcode_forward = BitstreamGetBits(bs, 3); | ||
181 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"fcode_forward %i\n", *fcode_forward); |
182 : | edgomez | 1.38 | } |
183 : | |||
184 : | if (coding_type == B_VOP && fcode_backward) | ||
185 : | { | ||
186 : | *fcode_backward = BitstreamGetBits(bs, 3); | ||
187 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward); |
188 : | edgomez | 1.38 | } |
189 : | } | ||
190 : | |||
191 : | } | ||
192 : | |||
193 : | if (dec->newpred_enable) | ||
194 : | { | ||
195 : | int vop_id; | ||
196 : | int vop_id_for_prediction; | ||
197 : | edgomez | 1.42 | |
198 : | edgomez | 1.38 | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
199 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id); |
200 : | edgomez | 1.38 | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ |
201 : | { | ||
202 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
203 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
204 : | edgomez | 1.38 | } |
205 : | READ_MARKER(); | ||
206 : | } | ||
207 : | suxen_drol | 1.21 | |
208 : | return mbnum; | ||
209 : | } | ||
210 : | |||
211 : | |||
212 : | |||
213 : | edgomez | 1.38 | |
214 : | /* vol estimation header */ | ||
215 : | static void | ||
216 : | read_vol_complexity_estimation_header(Bitstream * bs, DECODER * dec) | ||
217 : | { | ||
218 : | ESTIMATION * e = &dec->estimation; | ||
219 : | |||
220 : | e->method = BitstreamGetBits(bs, 2); /* estimation_method */ | ||
221 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"+ complexity_estimation_header; method=%i\n", e->method); |
222 : | edgomez | 1.38 | |
223 : | edgomez | 1.42 | if (e->method == 0 || e->method == 1) |
224 : | edgomez | 1.38 | { |
225 : | if (!BitstreamGetBit(bs)) /* shape_complexity_estimation_disable */ | ||
226 : | { | ||
227 : | e->opaque = BitstreamGetBit(bs); /* opaque */ | ||
228 : | e->transparent = BitstreamGetBit(bs); /* transparent */ | ||
229 : | e->intra_cae = BitstreamGetBit(bs); /* intra_cae */ | ||
230 : | e->inter_cae = BitstreamGetBit(bs); /* inter_cae */ | ||
231 : | e->no_update = BitstreamGetBit(bs); /* no_update */ | ||
232 : | e->upsampling = BitstreamGetBit(bs); /* upsampling */ | ||
233 : | } | ||
234 : | |||
235 : | if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_1_disable */ | ||
236 : | { | ||
237 : | e->intra_blocks = BitstreamGetBit(bs); /* intra_blocks */ | ||
238 : | e->inter_blocks = BitstreamGetBit(bs); /* inter_blocks */ | ||
239 : | e->inter4v_blocks = BitstreamGetBit(bs); /* inter4v_blocks */ | ||
240 : | e->not_coded_blocks = BitstreamGetBit(bs); /* not_coded_blocks */ | ||
241 : | } | ||
242 : | } | ||
243 : | |||
244 : | READ_MARKER(); | ||
245 : | |||
246 : | if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_2_disable */ | ||
247 : | { | ||
248 : | e->dct_coefs = BitstreamGetBit(bs); /* dct_coefs */ | ||
249 : | e->dct_lines = BitstreamGetBit(bs); /* dct_lines */ | ||
250 : | e->vlc_symbols = BitstreamGetBit(bs); /* vlc_symbols */ | ||
251 : | e->vlc_bits = BitstreamGetBit(bs); /* vlc_bits */ | ||
252 : | } | ||
253 : | |||
254 : | if (!BitstreamGetBit(bs)) /* motion_compensation_complexity_disable */ | ||
255 : | { | ||
256 : | e->apm = BitstreamGetBit(bs); /* apm */ | ||
257 : | e->npm = BitstreamGetBit(bs); /* npm */ | ||
258 : | e->interpolate_mc_q = BitstreamGetBit(bs); /* interpolate_mc_q */ | ||
259 : | e->forw_back_mc_q = BitstreamGetBit(bs); /* forw_back_mc_q */ | ||
260 : | e->halfpel2 = BitstreamGetBit(bs); /* halfpel2 */ | ||
261 : | e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */ | ||
262 : | } | ||
263 : | |||
264 : | READ_MARKER(); | ||
265 : | |||
266 : | if (e->method == 1) | ||
267 : | { | ||
268 : | if (!BitstreamGetBit(bs)) /* version2_complexity_estimation_disable */ | ||
269 : | { | ||
270 : | e->sadct = BitstreamGetBit(bs); /* sadct */ | ||
271 : | e->quarterpel = BitstreamGetBit(bs); /* quarterpel */ | ||
272 : | } | ||
273 : | } | ||
274 : | } | ||
275 : | |||
276 : | |||
277 : | /* vop estimation header */ | ||
278 : | static void | ||
279 : | read_vop_complexity_estimation_header(Bitstream * bs, DECODER * dec, int coding_type) | ||
280 : | { | ||
281 : | ESTIMATION * e = &dec->estimation; | ||
282 : | |||
283 : | if (e->method == 0 || e->method == 1) | ||
284 : | { | ||
285 : | if (coding_type == I_VOP) { | ||
286 : | if (e->opaque) BitstreamSkip(bs, 8); /* dcecs_opaque */ | ||
287 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
288 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
289 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
290 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
291 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
292 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
293 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
294 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
295 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
296 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
297 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
298 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
299 : | } | ||
300 : | edgomez | 1.42 | |
301 : | edgomez | 1.38 | if (coding_type == P_VOP) { |
302 : | if (e->opaque) BitstreamSkip(bs, 8); /* */ | ||
303 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
304 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
305 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
306 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
307 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
308 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
309 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
310 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
311 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
312 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
313 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
314 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
315 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
316 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
317 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
318 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
319 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
320 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
321 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
322 : | if (e->quarterpel) BitstreamSkip(bs, 8); /* */ | ||
323 : | } | ||
324 : | if (coding_type == B_VOP) { | ||
325 : | if (e->opaque) BitstreamSkip(bs, 8); /* */ | ||
326 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
327 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
328 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
329 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
330 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
331 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
332 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
333 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
334 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
335 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
336 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
337 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
338 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
339 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
340 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
341 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
342 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
343 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
344 : | if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ | ||
345 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
346 : | if (e->quarterpel) BitstreamSkip(bs, 8); /* */ | ||
347 : | } | ||
348 : | |||
349 : | if (coding_type == S_VOP && dec->sprite_enable == SPRITE_STATIC) { | ||
350 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
351 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
352 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
353 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
354 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
355 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
356 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
357 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
358 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
359 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
360 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
361 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
362 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
363 : | if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ | ||
364 : | } | ||
365 : | } | ||
366 : | } | ||
367 : | |||
368 : | |||
369 : | |||
370 : | |||
371 : | |||
372 : | Isibaar | 1.1 | /* |
373 : | decode headers | ||
374 : | returns coding_type, or -1 if error | ||
375 : | */ | ||
376 : | |||
377 : | suxen_drol | 1.22 | #define VIDOBJ_START_CODE_MASK 0x0000001f |
378 : | #define VIDOBJLAY_START_CODE_MASK 0x0000000f | ||
379 : | |||
380 : | edgomez | 1.14 | int |
381 : | BitstreamReadHeaders(Bitstream * bs, | ||
382 : | DECODER * dec, | ||
383 : | uint32_t * rounding, | ||
384 : | uint32_t * quant, | ||
385 : | uint32_t * fcode_forward, | ||
386 : | uint32_t * fcode_backward, | ||
387 : | edgomez | 1.38 | uint32_t * intra_dc_threshold, |
388 : | WARPPOINTS *gmc_warp) | ||
389 : | Isibaar | 1.1 | { |
390 : | uint32_t vol_ver_id; | ||
391 : | uint32_t coding_type; | ||
392 : | uint32_t start_code; | ||
393 : | edgomez | 1.14 | uint32_t time_incr = 0; |
394 : | edgomez | 1.39 | int32_t time_increment = 0; |
395 : | edgomez | 1.38 | int resize = 0; |
396 : | chenm001 | 1.9 | |
397 : | syskin | 1.47 | while ((BitstreamPos(bs) >> 3) + 4 <= bs->length) { |
398 : | edgomez | 1.38 | |
399 : | Isibaar | 1.1 | BitstreamByteAlign(bs); |
400 : | start_code = BitstreamShowBits(bs, 32); | ||
401 : | |||
402 : | edgomez | 1.14 | if (start_code == VISOBJSEQ_START_CODE) { |
403 : | suxen_drol | 1.22 | |
404 : | int profile; | ||
405 : | |||
406 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object_sequence>\n"); |
407 : | suxen_drol | 1.22 | |
408 : | edgomez | 1.42 | BitstreamSkip(bs, 32); /* visual_object_sequence_start_code */ |
409 : | profile = BitstreamGetBits(bs, 8); /* profile_and_level_indication */ | ||
410 : | suxen_drol | 1.22 | |
411 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "profile_and_level_indication %i\n", profile); |
412 : | suxen_drol | 1.22 | |
413 : | edgomez | 1.14 | } else if (start_code == VISOBJSEQ_STOP_CODE) { |
414 : | suxen_drol | 1.22 | |
415 : | edgomez | 1.42 | BitstreamSkip(bs, 32); /* visual_object_sequence_stop_code */ |
416 : | suxen_drol | 1.22 | |
417 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n"); |
418 : | suxen_drol | 1.22 | |
419 : | edgomez | 1.14 | } else if (start_code == VISOBJ_START_CODE) { |
420 : | edgomez | 1.38 | int visobj_ver_id; |
421 : | suxen_drol | 1.22 | |
422 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n"); |
423 : | suxen_drol | 1.22 | |
424 : | edgomez | 1.42 | BitstreamSkip(bs, 32); /* visual_object_start_code */ |
425 : | if (BitstreamGetBit(bs)) /* is_visual_object_identified */ | ||
426 : | Isibaar | 1.1 | { |
427 : | edgomez | 1.42 | visobj_ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
428 : | DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", visobj_ver_id); | ||
429 : | BitstreamSkip(bs, 3); /* visual_object_priority */ | ||
430 : | edgomez | 1.14 | } else { |
431 : | edgomez | 1.38 | visobj_ver_id = 1; |
432 : | Isibaar | 1.1 | } |
433 : | |||
434 : | edgomez | 1.42 | if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
435 : | Isibaar | 1.1 | { |
436 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_ERROR, "visual_object_type != video\n"); |
437 : | Isibaar | 1.1 | return -1; |
438 : | } | ||
439 : | BitstreamSkip(bs, 4); | ||
440 : | |||
441 : | edgomez | 1.42 | /* video_signal_type */ |
442 : | Isibaar | 1.1 | |
443 : | edgomez | 1.42 | if (BitstreamGetBit(bs)) /* video_signal_type */ |
444 : | Isibaar | 1.1 | { |
445 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"+ video_signal_type\n"); |
446 : | BitstreamSkip(bs, 3); /* video_format */ | ||
447 : | BitstreamSkip(bs, 1); /* video_range */ | ||
448 : | if (BitstreamGetBit(bs)) /* color_description */ | ||
449 : | Isibaar | 1.1 | { |
450 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"+ color_description"); |
451 : | BitstreamSkip(bs, 8); /* color_primaries */ | ||
452 : | BitstreamSkip(bs, 8); /* transfer_characteristics */ | ||
453 : | BitstreamSkip(bs, 8); /* matrix_coefficients */ | ||
454 : | Isibaar | 1.1 | } |
455 : | } | ||
456 : | suxen_drol | 1.22 | } else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
457 : | |||
458 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_STARTCODE, "<video_object>\n"); |
459 : | DPRINTF(XVID_DEBUG_HEADER, "vo id %i\n", start_code & VIDOBJ_START_CODE_MASK); | ||
460 : | suxen_drol | 1.22 | |
461 : | edgomez | 1.42 | BitstreamSkip(bs, 32); /* video_object_start_code */ |
462 : | suxen_drol | 1.22 | |
463 : | } else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { | ||
464 : | |||
465 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_STARTCODE, "<video_object_layer>\n"); |
466 : | DPRINTF(XVID_DEBUG_HEADER, "vol id %i\n", start_code & VIDOBJLAY_START_CODE_MASK); | ||
467 : | Isibaar | 1.1 | |
468 : | edgomez | 1.42 | BitstreamSkip(bs, 32); /* video_object_layer_start_code */ |
469 : | BitstreamSkip(bs, 1); /* random_accessible_vol */ | ||
470 : | Isibaar | 1.1 | |
471 : | edgomez | 1.42 | BitstreamSkip(bs, 8); /* video_object_type_indication */ |
472 : | Isibaar | 1.1 | |
473 : | edgomez | 1.42 | if (BitstreamGetBit(bs)) /* is_object_layer_identifier */ |
474 : | Isibaar | 1.1 | { |
475 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "+ is_object_layer_identifier\n"); |
476 : | vol_ver_id = BitstreamGetBits(bs, 4); /* video_object_layer_verid */ | ||
477 : | DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id); | ||
478 : | BitstreamSkip(bs, 3); /* video_object_layer_priority */ | ||
479 : | edgomez | 1.14 | } else { |
480 : | Isibaar | 1.1 | vol_ver_id = 1; |
481 : | } | ||
482 : | |||
483 : | edgomez | 1.38 | dec->aspect_ratio = BitstreamGetBits(bs, 4); |
484 : | |||
485 : | edgomez | 1.42 | if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */ |
486 : | Isibaar | 1.1 | { |
487 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "+ aspect_ratio_info\n"); |
488 : | dec->par_width = BitstreamGetBits(bs, 8); /* par_width */ | ||
489 : | dec->par_height = BitstreamGetBits(bs, 8); /* par_height */ | ||
490 : | Isibaar | 1.1 | } |
491 : | |||
492 : | edgomez | 1.42 | if (BitstreamGetBit(bs)) /* vol_control_parameters */ |
493 : | Isibaar | 1.1 | { |
494 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "+ vol_control_parameters\n"); |
495 : | BitstreamSkip(bs, 2); /* chroma_format */ | ||
496 : | dec->low_delay = BitstreamGetBit(bs); /* low_delay */ | ||
497 : | DPRINTF(XVID_DEBUG_HEADER, "low_delay %i\n", dec->low_delay); | ||
498 : | if (BitstreamGetBit(bs)) /* vbv_parameters */ | ||
499 : | Isibaar | 1.1 | { |
500 : | edgomez | 1.38 | unsigned int bitrate; |
501 : | unsigned int buffer_size; | ||
502 : | unsigned int occupancy; | ||
503 : | |||
504 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"+ vbv_parameters\n"); |
505 : | edgomez | 1.38 | |
506 : | edgomez | 1.42 | bitrate = BitstreamGetBits(bs,15) << 15; /* first_half_bit_rate */ |
507 : | Isibaar | 1.1 | READ_MARKER(); |
508 : | edgomez | 1.42 | bitrate |= BitstreamGetBits(bs,15); /* latter_half_bit_rate */ |
509 : | Isibaar | 1.1 | READ_MARKER(); |
510 : | edgomez | 1.42 | |
511 : | buffer_size = BitstreamGetBits(bs, 15) << 3; /* first_half_vbv_buffer_size */ | ||
512 : | Isibaar | 1.1 | READ_MARKER(); |
513 : | edgomez | 1.42 | buffer_size |= BitstreamGetBits(bs, 3); /* latter_half_vbv_buffer_size */ |
514 : | edgomez | 1.38 | |
515 : | edgomez | 1.42 | occupancy = BitstreamGetBits(bs, 11) << 15; /* first_half_vbv_occupancy */ |
516 : | Isibaar | 1.1 | READ_MARKER(); |
517 : | edgomez | 1.42 | occupancy |= BitstreamGetBits(bs, 15); /* latter_half_vbv_occupancy */ |
518 : | Isibaar | 1.1 | READ_MARKER(); |
519 : | edgomez | 1.14 | |
520 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"bitrate %d (unit=400 bps)\n", bitrate); |
521 : | DPRINTF(XVID_DEBUG_HEADER,"buffer_size %d (unit=16384 bits)\n", buffer_size); | ||
522 : | DPRINTF(XVID_DEBUG_HEADER,"occupancy %d (unit=64 bits)\n", occupancy); | ||
523 : | Isibaar | 1.1 | } |
524 : | edgomez | 1.38 | }else{ |
525 : | dec->low_delay = dec->low_delay_default; | ||
526 : | Isibaar | 1.1 | } |
527 : | |||
528 : | edgomez | 1.42 | dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */ |
529 : | edgomez | 1.38 | |
530 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "shape %i\n", dec->shape); |
531 : | edgomez | 1.38 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
532 : | { | ||
533 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_ERROR,"non-rectangular shapes are not supported\n"); |
534 : | edgomez | 1.38 | } |
535 : | edgomez | 1.14 | |
536 : | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { | ||
537 : | edgomez | 1.42 | BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */ |
538 : | Isibaar | 1.1 | } |
539 : | |||
540 : | READ_MARKER(); | ||
541 : | |||
542 : | edgomez | 1.42 | /********************** for decode B-frame time ***********************/ |
543 : | dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ | ||
544 : | DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i\n", dec->time_inc_resolution); | ||
545 : | suxen_drol | 1.22 | |
546 : | edgomez | 1.42 | #if 0 |
547 : | dec->time_inc_resolution--; | ||
548 : | #endif | ||
549 : | suxen_drol | 1.22 | |
550 : | edgomez | 1.38 | if (dec->time_inc_resolution > 0) { |
551 : | edgomez | 1.44 | dec->time_inc_bits = MAX(log2bin(dec->time_inc_resolution-1), 1); |
552 : | edgomez | 1.14 | } else { |
553 : | edgomez | 1.42 | #if 0 |
554 : | dec->time_inc_bits = 0; | ||
555 : | #endif | ||
556 : | /* for "old" xvid compatibility, set time_inc_bits = 1 */ | ||
557 : | Isibaar | 1.1 | dec->time_inc_bits = 1; |
558 : | } | ||
559 : | |||
560 : | READ_MARKER(); | ||
561 : | |||
562 : | edgomez | 1.42 | if (BitstreamGetBit(bs)) /* fixed_vop_rate */ |
563 : | Isibaar | 1.1 | { |
564 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "+ fixed_vop_rate\n"); |
565 : | BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */ | ||
566 : | Isibaar | 1.1 | } |
567 : | |||
568 : | edgomez | 1.14 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
569 : | Isibaar | 1.1 | |
570 : | edgomez | 1.14 | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { |
571 : | Isibaar | 1.1 | uint32_t width, height; |
572 : | |||
573 : | READ_MARKER(); | ||
574 : | edgomez | 1.42 | width = BitstreamGetBits(bs, 13); /* video_object_layer_width */ |
575 : | Isibaar | 1.1 | READ_MARKER(); |
576 : | edgomez | 1.42 | height = BitstreamGetBits(bs, 13); /* video_object_layer_height */ |
577 : | Isibaar | 1.1 | READ_MARKER(); |
578 : | |||
579 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
580 : | DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); | ||
581 : | chenm001 | 1.23 | |
582 : | edgomez | 1.38 | if (dec->width != width || dec->height != height) |
583 : | { | ||
584 : | if (dec->fixed_dimensions) | ||
585 : | { | ||
586 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_ERROR, "decoder width/height does not match bitstream\n"); |
587 : | edgomez | 1.38 | return -1; |
588 : | } | ||
589 : | resize = 1; | ||
590 : | chenm001 | 1.23 | dec->width = width; |
591 : | dec->height = height; | ||
592 : | Isibaar | 1.1 | } |
593 : | } | ||
594 : | h | 1.4 | |
595 : | suxen_drol | 1.22 | dec->interlacing = BitstreamGetBit(bs); |
596 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "interlacing %i\n", dec->interlacing); |
597 : | Isibaar | 1.1 | |
598 : | edgomez | 1.42 | if (!BitstreamGetBit(bs)) /* obmc_disable */ |
599 : | Isibaar | 1.1 | { |
600 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_ERROR, "obmc_disabled==false not supported\n"); |
601 : | /* TODO */ | ||
602 : | /* fucking divx4.02 has this enabled */ | ||
603 : | Isibaar | 1.1 | } |
604 : | |||
605 : | edgomez | 1.42 | dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); /* sprite_enable */ |
606 : | edgomez | 1.38 | |
607 : | if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC) | ||
608 : | Isibaar | 1.1 | { |
609 : | edgomez | 1.38 | int low_latency_sprite_enable; |
610 : | |||
611 : | if (dec->sprite_enable != SPRITE_GMC) | ||
612 : | { | ||
613 : | int sprite_width; | ||
614 : | int sprite_height; | ||
615 : | int sprite_left_coord; | ||
616 : | int sprite_top_coord; | ||
617 : | edgomez | 1.42 | sprite_width = BitstreamGetBits(bs, 13); /* sprite_width */ |
618 : | edgomez | 1.38 | READ_MARKER(); |
619 : | edgomez | 1.42 | sprite_height = BitstreamGetBits(bs, 13); /* sprite_height */ |
620 : | edgomez | 1.38 | READ_MARKER(); |
621 : | edgomez | 1.42 | sprite_left_coord = BitstreamGetBits(bs, 13); /* sprite_left_coordinate */ |
622 : | edgomez | 1.38 | READ_MARKER(); |
623 : | edgomez | 1.42 | sprite_top_coord = BitstreamGetBits(bs, 13); /* sprite_top_coordinate */ |
624 : | edgomez | 1.38 | READ_MARKER(); |
625 : | } | ||
626 : | edgomez | 1.42 | dec->sprite_warping_points = BitstreamGetBits(bs, 6); /* no_of_sprite_warping_points */ |
627 : | dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); /* sprite_warping_accuracy */ | ||
628 : | dec->sprite_brightness_change = BitstreamGetBits(bs, 1); /* brightness_change */ | ||
629 : | edgomez | 1.38 | if (dec->sprite_enable != SPRITE_GMC) |
630 : | { | ||
631 : | edgomez | 1.42 | low_latency_sprite_enable = BitstreamGetBits(bs, 1); /* low_latency_sprite_enable */ |
632 : | edgomez | 1.38 | } |
633 : | Isibaar | 1.1 | } |
634 : | edgomez | 1.14 | |
635 : | if (vol_ver_id != 1 && | ||
636 : | dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { | ||
637 : | edgomez | 1.42 | BitstreamSkip(bs, 1); /* sadct_disable */ |
638 : | Isibaar | 1.1 | } |
639 : | |||
640 : | edgomez | 1.42 | if (BitstreamGetBit(bs)) /* not_8_bit */ |
641 : | Isibaar | 1.1 | { |
642 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "not_8_bit==true (ignored)\n"); |
643 : | dec->quant_bits = BitstreamGetBits(bs, 4); /* quant_precision */ | ||
644 : | BitstreamSkip(bs, 4); /* bits_per_pixel */ | ||
645 : | edgomez | 1.14 | } else { |
646 : | Isibaar | 1.1 | dec->quant_bits = 5; |
647 : | } | ||
648 : | |||
649 : | edgomez | 1.14 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
650 : | edgomez | 1.42 | BitstreamSkip(bs, 1); /* no_gray_quant_update */ |
651 : | BitstreamSkip(bs, 1); /* composition_method */ | ||
652 : | BitstreamSkip(bs, 1); /* linear_composition */ | ||
653 : | Isibaar | 1.1 | } |
654 : | |||
655 : | edgomez | 1.42 | dec->quant_type = BitstreamGetBit(bs); /* quant_type */ |
656 : | DPRINTF(XVID_DEBUG_HEADER, "quant_type %i\n", dec->quant_type); | ||
657 : | Isibaar | 1.1 | |
658 : | edgomez | 1.14 | if (dec->quant_type) { |
659 : | edgomez | 1.42 | if (BitstreamGetBit(bs)) /* load_intra_quant_mat */ |
660 : | Isibaar | 1.1 | { |
661 : | Isibaar | 1.3 | uint8_t matrix[64]; |
662 : | edgomez | 1.14 | |
663 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat\n"); |
664 : | suxen_drol | 1.22 | |
665 : | Isibaar | 1.2 | bs_get_matrix(bs, matrix); |
666 : | edgomez | 1.42 | set_intra_matrix(dec->mpeg_quant_matrices, matrix); |
667 : | edgomez | 1.14 | } else |
668 : | edgomez | 1.42 | set_intra_matrix(dec->mpeg_quant_matrices, get_default_intra_matrix()); |
669 : | Isibaar | 1.2 | |
670 : | edgomez | 1.42 | if (BitstreamGetBit(bs)) /* load_inter_quant_mat */ |
671 : | Isibaar | 1.1 | { |
672 : | edgomez | 1.14 | uint8_t matrix[64]; |
673 : | edgomez | 1.42 | |
674 : | DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat\n"); | ||
675 : | edgomez | 1.14 | |
676 : | Isibaar | 1.2 | bs_get_matrix(bs, matrix); |
677 : | edgomez | 1.42 | set_inter_matrix(dec->mpeg_quant_matrices, matrix); |
678 : | edgomez | 1.14 | } else |
679 : | edgomez | 1.42 | set_inter_matrix(dec->mpeg_quant_matrices, get_default_inter_matrix()); |
680 : | Isibaar | 1.1 | |
681 : | edgomez | 1.14 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
682 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported\n"); |
683 : | Isibaar | 1.1 | return -1; |
684 : | } | ||
685 : | Isibaar | 1.2 | |
686 : | Isibaar | 1.1 | } |
687 : | |||
688 : | edgomez | 1.14 | |
689 : | if (vol_ver_id != 1) { | ||
690 : | edgomez | 1.42 | dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */ |
691 : | DPRINTF(XVID_DEBUG_HEADER,"quarterpel %i\n", dec->quarterpel); | ||
692 : | Isibaar | 1.26 | } |
693 : | else | ||
694 : | Isibaar | 1.1 | dec->quarterpel = 0; |
695 : | edgomez | 1.42 | |
696 : | Isibaar | 1.1 | |
697 : | edgomez | 1.38 | dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */ |
698 : | if (!dec->complexity_estimation_disable) | ||
699 : | Isibaar | 1.1 | { |
700 : | edgomez | 1.38 | read_vol_complexity_estimation_header(bs, dec); |
701 : | Isibaar | 1.1 | } |
702 : | |||
703 : | edgomez | 1.42 | BitstreamSkip(bs, 1); /* resync_marker_disable */ |
704 : | Isibaar | 1.1 | |
705 : | edgomez | 1.42 | if (BitstreamGetBit(bs)) /* data_partitioned */ |
706 : | Isibaar | 1.1 | { |
707 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_ERROR, "data_partitioned not supported\n"); |
708 : | BitstreamSkip(bs, 1); /* reversible_vlc */ | ||
709 : | Isibaar | 1.1 | } |
710 : | |||
711 : | edgomez | 1.14 | if (vol_ver_id != 1) { |
712 : | edgomez | 1.38 | dec->newpred_enable = BitstreamGetBit(bs); |
713 : | edgomez | 1.42 | if (dec->newpred_enable) /* newpred_enable */ |
714 : | Isibaar | 1.1 | { |
715 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "+ newpred_enable\n"); |
716 : | BitstreamSkip(bs, 2); /* requested_upstream_message_type */ | ||
717 : | BitstreamSkip(bs, 1); /* newpred_segment_type */ | ||
718 : | Isibaar | 1.1 | } |
719 : | edgomez | 1.38 | dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */ |
720 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution_enable %i\n", dec->reduced_resolution_enable); |
721 : | edgomez | 1.38 | } |
722 : | else | ||
723 : | { | ||
724 : | dec->newpred_enable = 0; | ||
725 : | dec->reduced_resolution_enable = 0; | ||
726 : | Isibaar | 1.1 | } |
727 : | edgomez | 1.14 | |
728 : | edgomez | 1.38 | dec->scalability = BitstreamGetBit(bs); /* scalability */ |
729 : | edgomez | 1.42 | if (dec->scalability) |
730 : | Isibaar | 1.1 | { |
731 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
732 : | edgomez | 1.38 | BitstreamSkip(bs, 1); /* hierarchy_type */ |
733 : | BitstreamSkip(bs, 4); /* ref_layer_id */ | ||
734 : | BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */ | ||
735 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ | ||
736 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ | ||
737 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ | ||
738 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ | ||
739 : | BitstreamSkip(bs, 1); /* enhancement_type */ | ||
740 : | if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) { | ||
741 : | BitstreamSkip(bs, 1); /* use_ref_shape */ | ||
742 : | BitstreamSkip(bs, 1); /* use_ref_texture */ | ||
743 : | BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */ | ||
744 : | BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */ | ||
745 : | BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */ | ||
746 : | BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */ | ||
747 : | } | ||
748 : | Isibaar | 1.1 | return -1; |
749 : | } | ||
750 : | edgomez | 1.42 | } else /* dec->shape == BINARY_ONLY */ |
751 : | Isibaar | 1.1 | { |
752 : | edgomez | 1.14 | if (vol_ver_id != 1) { |
753 : | edgomez | 1.38 | dec->scalability = BitstreamGetBit(bs); /* scalability */ |
754 : | edgomez | 1.42 | if (dec->scalability) |
755 : | Isibaar | 1.1 | { |
756 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
757 : | edgomez | 1.38 | BitstreamSkip(bs, 4); /* ref_layer_id */ |
758 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ | ||
759 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ | ||
760 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ | ||
761 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ | ||
762 : | Isibaar | 1.1 | return -1; |
763 : | } | ||
764 : | } | ||
765 : | edgomez | 1.42 | BitstreamSkip(bs, 1); /* resync_marker_disable */ |
766 : | Isibaar | 1.1 | |
767 : | } | ||
768 : | |||
769 : | edgomez | 1.38 | return (resize ? -3 : -2 ); /* VOL */ |
770 : | |||
771 : | edgomez | 1.14 | } else if (start_code == GRPOFVOP_START_CODE) { |
772 : | suxen_drol | 1.22 | |
773 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_STARTCODE, "<group_of_vop>\n"); |
774 : | suxen_drol | 1.22 | |
775 : | Isibaar | 1.1 | BitstreamSkip(bs, 32); |
776 : | { | ||
777 : | int hours, minutes, seconds; | ||
778 : | edgomez | 1.14 | |
779 : | Isibaar | 1.1 | hours = BitstreamGetBits(bs, 5); |
780 : | minutes = BitstreamGetBits(bs, 6); | ||
781 : | READ_MARKER(); | ||
782 : | seconds = BitstreamGetBits(bs, 6); | ||
783 : | edgomez | 1.42 | |
784 : | DPRINTF(XVID_DEBUG_HEADER, "time %ih%im%is\n", hours,minutes,seconds); | ||
785 : | Isibaar | 1.1 | } |
786 : | edgomez | 1.42 | BitstreamSkip(bs, 1); /* closed_gov */ |
787 : | BitstreamSkip(bs, 1); /* broken_link */ | ||
788 : | suxen_drol | 1.22 | |
789 : | edgomez | 1.14 | } else if (start_code == VOP_START_CODE) { |
790 : | suxen_drol | 1.22 | |
791 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_STARTCODE, "<vop>\n"); |
792 : | suxen_drol | 1.22 | |
793 : | edgomez | 1.42 | BitstreamSkip(bs, 32); /* vop_start_code */ |
794 : | Isibaar | 1.1 | |
795 : | edgomez | 1.42 | coding_type = BitstreamGetBits(bs, 2); /* vop_coding_type */ |
796 : | DPRINTF(XVID_DEBUG_HEADER, "coding_type %i\n", coding_type); | ||
797 : | Isibaar | 1.1 | |
798 : | edgomez | 1.42 | /*********************** for decode B-frame time ***********************/ |
799 : | while (BitstreamGetBit(bs) != 0) /* time_base */ | ||
800 : | chenm001 | 1.9 | time_incr++; |
801 : | edgomez | 1.14 | |
802 : | Isibaar | 1.1 | READ_MARKER(); |
803 : | edgomez | 1.14 | |
804 : | if (dec->time_inc_bits) { | ||
805 : | edgomez | 1.42 | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ |
806 : | chenm001 | 1.9 | } |
807 : | suxen_drol | 1.19 | |
808 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "time_base %i\n", time_incr); |
809 : | DPRINTF(XVID_DEBUG_HEADER, "time_increment %i\n", time_increment); | ||
810 : | suxen_drol | 1.22 | |
811 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_TIMECODE, "%c %i:%i\n", |
812 : | edgomez | 1.38 | coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S', |
813 : | suxen_drol | 1.19 | time_incr, time_increment); |
814 : | |||
815 : | edgomez | 1.14 | if (coding_type != B_VOP) { |
816 : | dec->last_time_base = dec->time_base; | ||
817 : | chenm001 | 1.9 | dec->time_base += time_incr; |
818 : | edgomez | 1.44 | dec->time = dec->time_base*dec->time_inc_resolution + time_increment; |
819 : | dec->time_pp = (int32_t)(dec->time - dec->last_non_b_time); | ||
820 : | edgomez | 1.14 | dec->last_non_b_time = dec->time; |
821 : | } else { | ||
822 : | edgomez | 1.44 | dec->time = (dec->last_time_base + time_incr)*dec->time_inc_resolution + time_increment; |
823 : | dec->time_bp = dec->time_pp - (int32_t)(dec->last_non_b_time - dec->time); | ||
824 : | Isibaar | 1.1 | } |
825 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
826 : | DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); | ||
827 : | Isibaar | 1.1 | |
828 : | READ_MARKER(); | ||
829 : | |||
830 : | edgomez | 1.42 | if (!BitstreamGetBit(bs)) /* vop_coded */ |
831 : | Isibaar | 1.1 | { |
832 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "vop_coded==false\n"); |
833 : | Isibaar | 1.1 | return N_VOP; |
834 : | } | ||
835 : | |||
836 : | edgomez | 1.38 | if (dec->newpred_enable) |
837 : | { | ||
838 : | int vop_id; | ||
839 : | int vop_id_for_prediction; | ||
840 : | edgomez | 1.42 | |
841 : | edgomez | 1.38 | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
842 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id); |
843 : | edgomez | 1.38 | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ |
844 : | { | ||
845 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
846 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
847 : | edgomez | 1.38 | } |
848 : | READ_MARKER(); | ||
849 : | } | ||
850 : | |||
851 : | Isibaar | 1.1 | |
852 : | edgomez | 1.42 | |
853 : | /* fix a little bug by MinChen <chenm002@163.com> */ | ||
854 : | edgomez | 1.14 | if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
855 : | edgomez | 1.38 | ( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) { |
856 : | edgomez | 1.42 | *rounding = BitstreamGetBit(bs); /* rounding_type */ |
857 : | DPRINTF(XVID_DEBUG_HEADER, "rounding %i\n", *rounding); | ||
858 : | Isibaar | 1.1 | } |
859 : | |||
860 : | edgomez | 1.38 | if (dec->reduced_resolution_enable && |
861 : | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && | ||
862 : | (coding_type == P_VOP || coding_type == I_VOP)) { | ||
863 : | |||
864 : | syskin | 1.48 | if (BitstreamGetBit(bs)); |
865 : | DPRINTF(XVID_DEBUG_ERROR, "RRV not supported (anymore)\n"); | ||
866 : | edgomez | 1.38 | } |
867 : | Isibaar | 1.1 | |
868 : | edgomez | 1.14 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
869 : | edgomez | 1.38 | if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) { |
870 : | edgomez | 1.14 | |
871 : | edgomez | 1.38 | uint32_t width, height; |
872 : | uint32_t horiz_mc_ref, vert_mc_ref; | ||
873 : | Isibaar | 1.1 | |
874 : | edgomez | 1.38 | width = BitstreamGetBits(bs, 13); |
875 : | READ_MARKER(); | ||
876 : | height = BitstreamGetBits(bs, 13); | ||
877 : | READ_MARKER(); | ||
878 : | horiz_mc_ref = BitstreamGetBits(bs, 13); | ||
879 : | READ_MARKER(); | ||
880 : | vert_mc_ref = BitstreamGetBits(bs, 13); | ||
881 : | READ_MARKER(); | ||
882 : | Isibaar | 1.1 | |
883 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
884 : | DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); | ||
885 : | DPRINTF(XVID_DEBUG_HEADER, "horiz_mc_ref %i\n", horiz_mc_ref); | ||
886 : | DPRINTF(XVID_DEBUG_HEADER, "vert_mc_ref %i\n", vert_mc_ref); | ||
887 : | edgomez | 1.38 | } |
888 : | |||
889 : | edgomez | 1.42 | BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ |
890 : | if (BitstreamGetBit(bs)) /* vop_constant_alpha */ | ||
891 : | Isibaar | 1.1 | { |
892 : | edgomez | 1.42 | BitstreamSkip(bs, 8); /* vop_constant_alpha_value */ |
893 : | Isibaar | 1.1 | } |
894 : | } | ||
895 : | |||
896 : | edgomez | 1.38 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
897 : | edgomez | 1.14 | |
898 : | edgomez | 1.38 | if (!dec->complexity_estimation_disable) |
899 : | { | ||
900 : | read_vop_complexity_estimation_header(bs, dec, coding_type); | ||
901 : | } | ||
902 : | |||
903 : | edgomez | 1.42 | /* intra_dc_vlc_threshold */ |
904 : | edgomez | 1.14 | *intra_dc_threshold = |
905 : | intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
906 : | Isibaar | 1.1 | |
907 : | edgomez | 1.38 | dec->top_field_first = 0; |
908 : | dec->alternate_vertical_scan = 0; | ||
909 : | |||
910 : | edgomez | 1.14 | if (dec->interlacing) { |
911 : | suxen_drol | 1.22 | dec->top_field_first = BitstreamGetBit(bs); |
912 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "interlace top_field_first %i\n", dec->top_field_first); |
913 : | suxen_drol | 1.22 | dec->alternate_vertical_scan = BitstreamGetBit(bs); |
914 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "interlace alternate_vertical_scan %i\n", dec->alternate_vertical_scan); |
915 : | |||
916 : | h | 1.4 | } |
917 : | Isibaar | 1.1 | } |
918 : | edgomez | 1.14 | |
919 : | edgomez | 1.38 | if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) { |
920 : | |||
921 : | int i; | ||
922 : | |||
923 : | for (i = 0 ; i < dec->sprite_warping_points; i++) | ||
924 : | { | ||
925 : | int length; | ||
926 : | int x = 0, y = 0; | ||
927 : | |||
928 : | /* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */ | ||
929 : | length = bs_get_spritetrajectory(bs); | ||
930 : | if(length){ | ||
931 : | x= BitstreamGetBits(bs, length); | ||
932 : | if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
933 : | x = - (x ^ ((1 << length) - 1)); | ||
934 : | } | ||
935 : | READ_MARKER(); | ||
936 : | edgomez | 1.42 | |
937 : | edgomez | 1.38 | length = bs_get_spritetrajectory(bs); |
938 : | if(length){ | ||
939 : | y = BitstreamGetBits(bs, length); | ||
940 : | if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
941 : | y = - (y ^ ((1 << length) - 1)); | ||
942 : | } | ||
943 : | READ_MARKER(); | ||
944 : | |||
945 : | gmc_warp->duv[i].x = x; | ||
946 : | gmc_warp->duv[i].y = y; | ||
947 : | |||
948 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", i, x, y); |
949 : | edgomez | 1.38 | } |
950 : | |||
951 : | if (dec->sprite_brightness_change) | ||
952 : | { | ||
953 : | edgomez | 1.42 | /* XXX: brightness_change_factor() */ |
954 : | edgomez | 1.38 | } |
955 : | if (dec->sprite_enable == SPRITE_STATIC) | ||
956 : | { | ||
957 : | edgomez | 1.42 | /* XXX: todo */ |
958 : | edgomez | 1.38 | } |
959 : | |||
960 : | } | ||
961 : | |||
962 : | edgomez | 1.42 | if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) /* vop_quant */ |
963 : | Isibaar | 1.10 | *quant = 1; |
964 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant); |
965 : | edgomez | 1.14 | |
966 : | if (coding_type != I_VOP) { | ||
967 : | edgomez | 1.42 | *fcode_forward = BitstreamGetBits(bs, 3); /* fcode_forward */ |
968 : | DPRINTF(XVID_DEBUG_HEADER, "fcode_forward %i\n", *fcode_forward); | ||
969 : | Isibaar | 1.1 | } |
970 : | edgomez | 1.14 | |
971 : | if (coding_type == B_VOP) { | ||
972 : | edgomez | 1.42 | *fcode_backward = BitstreamGetBits(bs, 3); /* fcode_backward */ |
973 : | DPRINTF(XVID_DEBUG_HEADER, "fcode_backward %i\n", *fcode_backward); | ||
974 : | chenm001 | 1.9 | } |
975 : | edgomez | 1.14 | if (!dec->scalability) { |
976 : | if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && | ||
977 : | (coding_type != I_VOP)) { | ||
978 : | edgomez | 1.42 | BitstreamSkip(bs, 1); /* vop_shape_coding_type */ |
979 : | chenm001 | 1.9 | } |
980 : | Isibaar | 1.1 | } |
981 : | return coding_type; | ||
982 : | suxen_drol | 1.22 | |
983 : | edgomez | 1.14 | } else if (start_code == USERDATA_START_CODE) { |
984 : | edgomez | 1.38 | char tmp[256]; |
985 : | int i, version, build; | ||
986 : | char packed; | ||
987 : | |||
988 : | edgomez | 1.42 | BitstreamSkip(bs, 32); /* user_data_start_code */ |
989 : | edgomez | 1.38 | |
990 : | edgomez | 1.46 | memset(tmp, 0, 256); |
991 : | edgomez | 1.38 | tmp[0] = BitstreamShowBits(bs, 8); |
992 : | edgomez | 1.42 | |
993 : | edgomez | 1.38 | for(i = 1; i < 256; i++){ |
994 : | tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF); | ||
995 : | edgomez | 1.42 | |
996 : | if(tmp[i] == 0) | ||
997 : | edgomez | 1.38 | break; |
998 : | edgomez | 1.42 | |
999 : | edgomez | 1.38 | BitstreamSkip(bs, 8); |
1000 : | } | ||
1001 : | suxen_drol | 1.22 | |
1002 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s\n", tmp); |
1003 : | |||
1004 : | Isibaar | 1.40 | /* read xvid bitstream version */ |
1005 : | if(strncmp(tmp, "XviD", 4) == 0) { | ||
1006 : | edgomez | 1.42 | if (tmp[strlen(tmp)-1] == 'C') { |
1007 : | sscanf(tmp, "XviD%dC", &dec->bs_version); | ||
1008 : | dec->cartoon_mode = 1; | ||
1009 : | } | ||
1010 : | else | ||
1011 : | sscanf(tmp, "XviD%d", &dec->bs_version); | ||
1012 : | |||
1013 : | edgomez | 1.44 | DPRINTF(XVID_DEBUG_HEADER, "xvid bitstream version=%i\n", dec->bs_version); |
1014 : | Isibaar | 1.40 | } |
1015 : | suxen_drol | 1.22 | |
1016 : | edgomez | 1.38 | /* divx detection */ |
1017 : | i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed); | ||
1018 : | if (i < 2) | ||
1019 : | i = sscanf(tmp, "DivX%db%d%c", &version, &build, &packed); | ||
1020 : | edgomez | 1.42 | |
1021 : | edgomez | 1.38 | if (i >= 2) |
1022 : | { | ||
1023 : | dec->packed_mode = (i == 3 && packed == 'p'); | ||
1024 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER, "divx version=%i, build=%i packed=%i\n", |
1025 : | edgomez | 1.38 | version, build, dec->packed_mode); |
1026 : | } | ||
1027 : | suxen_drol | 1.22 | |
1028 : | edgomez | 1.42 | } else /* start_code == ? */ |
1029 : | Isibaar | 1.1 | { |
1030 : | edgomez | 1.14 | if (BitstreamShowBits(bs, 24) == 0x000001) { |
1031 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_STARTCODE, "<unknown: %x>\n", BitstreamShowBits(bs, 32)); |
1032 : | Isibaar | 1.1 | } |
1033 : | BitstreamSkip(bs, 8); | ||
1034 : | } | ||
1035 : | } | ||
1036 : | |||
1037 : | edgomez | 1.42 | #if 0 |
1038 : | DPRINTF("*** WARNING: no vop_start_code found"); | ||
1039 : | #endif | ||
1040 : | edgomez | 1.14 | return -1; /* ignore it */ |
1041 : | Isibaar | 1.1 | } |
1042 : | |||
1043 : | |||
1044 : | /* write custom quant matrix */ | ||
1045 : | |||
1046 : | edgomez | 1.14 | static void |
1047 : | bs_put_matrix(Bitstream * bs, | ||
1048 : | edgomez | 1.42 | const uint16_t * matrix) |
1049 : | Isibaar | 1.1 | { |
1050 : | int i, j; | ||
1051 : | const int last = matrix[scan_tables[0][63]]; | ||
1052 : | |||
1053 : | suxen_drol | 1.18 | for (j = 63; j > 0 && matrix[scan_tables[0][j - 1]] == last; j--); |
1054 : | Isibaar | 1.1 | |
1055 : | edgomez | 1.14 | for (i = 0; i <= j; i++) { |
1056 : | Isibaar | 1.1 | BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
1057 : | } | ||
1058 : | |||
1059 : | edgomez | 1.14 | if (j < 63) { |
1060 : | Isibaar | 1.1 | BitstreamPutBits(bs, 0, 8); |
1061 : | } | ||
1062 : | } | ||
1063 : | |||
1064 : | |||
1065 : | /* | ||
1066 : | write vol header | ||
1067 : | */ | ||
1068 : | edgomez | 1.14 | void |
1069 : | BitstreamWriteVolHeader(Bitstream * const bs, | ||
1070 : | const MBParam * pParam, | ||
1071 : | edgomez | 1.38 | const FRAMEINFO * const frame) |
1072 : | Isibaar | 1.1 | { |
1073 : | edgomez | 1.38 | static const unsigned int vo_id = 0; |
1074 : | static const unsigned int vol_id = 0; | ||
1075 : | edgomez | 1.42 | int vol_ver_id = 1; |
1076 : | int vol_type_ind = VIDOBJLAY_TYPE_SIMPLE; | ||
1077 : | int vol_profile = pParam->profile; | ||
1078 : | |||
1079 : | if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || | ||
1080 : | (pParam->vol_flags & XVID_VOL_GMC) || | ||
1081 : | (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) | ||
1082 : | edgomez | 1.38 | vol_ver_id = 2; |
1083 : | |||
1084 : | edgomez | 1.42 | if ((pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) { |
1085 : | vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE; | ||
1086 : | } | ||
1087 : | |||
1088 : | if ((pParam->vol_flags & XVID_VOL_QUARTERPEL) || | ||
1089 : | (pParam->vol_flags & XVID_VOL_GMC)) { | ||
1090 : | vol_type_ind = VIDOBJLAY_TYPE_ASP; | ||
1091 : | } | ||
1092 : | edgomez | 1.38 | |
1093 : | edgomez | 1.42 | /* visual_object_sequence_start_code */ |
1094 : | #if 0 | ||
1095 : | BitstreamPad(bs); | ||
1096 : | #endif | ||
1097 : | edgomez | 1.38 | |
1098 : | edgomez | 1.42 | /* |
1099 : | * no padding here, anymore. You have to make sure that you are | ||
1100 : | * byte aligned, and that always 1-8 padding bits have been written | ||
1101 : | */ | ||
1102 : | edgomez | 1.38 | |
1103 : | edgomez | 1.42 | if (!vol_profile) { |
1104 : | /* Profile was not set by client app, use the more permissive profile | ||
1105 : | * compatible with the vol_type_id */ | ||
1106 : | switch(vol_type_ind) { | ||
1107 : | case VIDOBJLAY_TYPE_ASP: | ||
1108 : | vol_profile = 0xf5; /* ASP level 5 */ | ||
1109 : | break; | ||
1110 : | case VIDOBJLAY_TYPE_ART_SIMPLE: | ||
1111 : | vol_profile = 0x94; /* ARTS level 4 */ | ||
1112 : | break; | ||
1113 : | default: | ||
1114 : | vol_profile = 0x03; /* Simple level 3 */ | ||
1115 : | break; | ||
1116 : | } | ||
1117 : | } | ||
1118 : | |||
1119 : | /* Write the VOS header */ | ||
1120 : | edgomez | 1.38 | BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32); |
1121 : | edgomez | 1.42 | BitstreamPutBits(bs, vol_profile, 8); /* profile_and_level_indication */ |
1122 : | edgomez | 1.38 | |
1123 : | edgomez | 1.42 | |
1124 : | /* visual_object_start_code */ | ||
1125 : | edgomez | 1.38 | BitstreamPad(bs); |
1126 : | BitstreamPutBits(bs, VISOBJ_START_CODE, 32); | ||
1127 : | edgomez | 1.42 | BitstreamPutBits(bs, 0, 1); /* is_visual_object_identifier */ |
1128 : | edgomez | 1.41 | |
1129 : | /* Video type */ | ||
1130 : | edgomez | 1.42 | BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); /* visual_object_type */ |
1131 : | edgomez | 1.41 | BitstreamPutBit(bs, 0); /* video_signal_type */ |
1132 : | |||
1133 : | edgomez | 1.42 | /* video object_start_code & vo_id */ |
1134 : | BitstreamPadAlways(bs); /* next_start_code() */ | ||
1135 : | edgomez | 1.38 | BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32); |
1136 : | Isibaar | 1.1 | |
1137 : | edgomez | 1.42 | /* video_object_layer_start_code & vol_id */ |
1138 : | edgomez | 1.38 | BitstreamPad(bs); |
1139 : | BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32); | ||
1140 : | Isibaar | 1.1 | |
1141 : | edgomez | 1.42 | BitstreamPutBit(bs, 0); /* random_accessible_vol */ |
1142 : | BitstreamPutBits(bs, vol_type_ind, 8); /* video_object_type_indication */ | ||
1143 : | suxen_drol | 1.12 | |
1144 : | edgomez | 1.42 | if (vol_ver_id == 1) { |
1145 : | BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */ | ||
1146 : | } else { | ||
1147 : | BitstreamPutBit(bs, 1); /* is_object_layer_identified */ | ||
1148 : | BitstreamPutBits(bs, vol_ver_id, 4); /* vol_ver_id == 2 */ | ||
1149 : | BitstreamPutBits(bs, 4, 3); /* vol_ver_priority (1==highest, 7==lowest) */ | ||
1150 : | } | ||
1151 : | |||
1152 : | /* Aspect ratio */ | ||
1153 : | BitstreamPutBits(bs, pParam->par, 4); /* aspect_ratio_info (1=1:1) */ | ||
1154 : | if(pParam->par == XVID_PAR_EXT) { | ||
1155 : | BitstreamPutBits(bs, pParam->par_width, 8); | ||
1156 : | BitstreamPutBits(bs, pParam->par_height, 8); | ||
1157 : | edgomez | 1.38 | } |
1158 : | chl | 1.28 | |
1159 : | edgomez | 1.42 | BitstreamPutBit(bs, 1); /* vol_control_parameters */ |
1160 : | BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ | ||
1161 : | suxen_drol | 1.12 | |
1162 : | edgomez | 1.38 | if (pParam->max_bframes > 0) { |
1163 : | edgomez | 1.42 | BitstreamPutBit(bs, 0); /* low_delay */ |
1164 : | edgomez | 1.38 | } else |
1165 : | { | ||
1166 : | edgomez | 1.42 | BitstreamPutBit(bs, 1); /* low_delay */ |
1167 : | edgomez | 1.38 | } |
1168 : | edgomez | 1.42 | BitstreamPutBit(bs, 0); /* vbv_parameters (0=not given) */ |
1169 : | edgomez | 1.38 | |
1170 : | edgomez | 1.42 | BitstreamPutBits(bs, 0, 2); /* video_object_layer_shape (0=rectangular) */ |
1171 : | Isibaar | 1.1 | |
1172 : | WRITE_MARKER(); | ||
1173 : | edgomez | 1.14 | |
1174 : | edgomez | 1.42 | /* |
1175 : | * time_inc_resolution; ignored by current decore versions | ||
1176 : | * eg. 2fps res=2 inc=1 | ||
1177 : | * 25fps res=25 inc=1 | ||
1178 : | * 29.97fps res=30000 inc=1001 | ||
1179 : | edgomez | 1.14 | */ |
1180 : | suxen_drol | 1.11 | BitstreamPutBits(bs, pParam->fbase, 16); |
1181 : | edgomez | 1.31 | |
1182 : | Isibaar | 1.1 | WRITE_MARKER(); |
1183 : | |||
1184 : | edgomez | 1.42 | if (pParam->fincr>0) { |
1185 : | edgomez | 1.43 | BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ |
1186 : | BitstreamPutBits(bs, pParam->fincr, MAX(log2bin(pParam->fbase-1),1)); /* fixed_vop_time_increment */ | ||
1187 : | edgomez | 1.42 | }else{ |
1188 : | BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */ | ||
1189 : | } | ||
1190 : | Isibaar | 1.1 | |
1191 : | WRITE_MARKER(); | ||
1192 : | edgomez | 1.42 | BitstreamPutBits(bs, pParam->width, 13); /* width */ |
1193 : | Isibaar | 1.1 | WRITE_MARKER(); |
1194 : | edgomez | 1.42 | BitstreamPutBits(bs, pParam->height, 13); /* height */ |
1195 : | Isibaar | 1.1 | WRITE_MARKER(); |
1196 : | edgomez | 1.14 | |
1197 : | edgomez | 1.42 | BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_INTERLACING); /* interlace */ |
1198 : | BitstreamPutBit(bs, 1); /* obmc_disable (overlapped block motion compensation) */ | ||
1199 : | edgomez | 1.38 | |
1200 : | edgomez | 1.42 | if (vol_ver_id != 1) |
1201 : | { if ((pParam->vol_flags & XVID_VOL_GMC)) | ||
1202 : | { BitstreamPutBits(bs, 2, 2); /* sprite_enable=='GMC' */ | ||
1203 : | BitstreamPutBits(bs, 3, 6); /* no_of_sprite_warping_points */ | ||
1204 : | BitstreamPutBits(bs, 3, 2); /* sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 */ | ||
1205 : | BitstreamPutBit(bs, 0); /* sprite_brightness_change (not supported) */ | ||
1206 : | |||
1207 : | /* | ||
1208 : | * currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3 | ||
1209 : | * for DivX5 compatability | ||
1210 : | */ | ||
1211 : | edgomez | 1.38 | |
1212 : | } else | ||
1213 : | edgomez | 1.42 | BitstreamPutBits(bs, 0, 2); /* sprite_enable==off */ |
1214 : | edgomez | 1.38 | } |
1215 : | else | ||
1216 : | edgomez | 1.42 | BitstreamPutBit(bs, 0); /* sprite_enable==off */ |
1217 : | edgomez | 1.38 | |
1218 : | edgomez | 1.42 | BitstreamPutBit(bs, 0); /* not_8_bit */ |
1219 : | Isibaar | 1.1 | |
1220 : | edgomez | 1.42 | /* quant_type 0=h.263 1=mpeg4(quantizer tables) */ |
1221 : | BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT); | ||
1222 : | edgomez | 1.14 | |
1223 : | edgomez | 1.42 | if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) { |
1224 : | BitstreamPutBit(bs, is_custom_intra_matrix(pParam->mpeg_quant_matrices)); /* load_intra_quant_mat */ | ||
1225 : | if(is_custom_intra_matrix(pParam->mpeg_quant_matrices)) | ||
1226 : | bs_put_matrix(bs, get_intra_matrix(pParam->mpeg_quant_matrices)); | ||
1227 : | Isibaar | 1.1 | |
1228 : | edgomez | 1.42 | BitstreamPutBit(bs, is_custom_inter_matrix(pParam->mpeg_quant_matrices)); /* load_inter_quant_mat */ |
1229 : | if(is_custom_inter_matrix(pParam->mpeg_quant_matrices)) | ||
1230 : | bs_put_matrix(bs, get_inter_matrix(pParam->mpeg_quant_matrices)); | ||
1231 : | Isibaar | 1.1 | } |
1232 : | |||
1233 : | edgomez | 1.38 | if (vol_ver_id != 1) { |
1234 : | edgomez | 1.42 | if ((pParam->vol_flags & XVID_VOL_QUARTERPEL)) |
1235 : | BitstreamPutBit(bs, 1); /* quarterpel */ | ||
1236 : | edgomez | 1.38 | else |
1237 : | edgomez | 1.42 | BitstreamPutBit(bs, 0); /* no quarterpel */ |
1238 : | edgomez | 1.38 | } |
1239 : | |||
1240 : | edgomez | 1.42 | BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ |
1241 : | BitstreamPutBit(bs, 1); /* resync_marker_disable */ | ||
1242 : | BitstreamPutBit(bs, 0); /* data_partitioned */ | ||
1243 : | edgomez | 1.38 | |
1244 : | edgomez | 1.42 | if (vol_ver_id != 1) { |
1245 : | BitstreamPutBit(bs, 0); /* newpred_enable */ | ||
1246 : | BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0); | ||
1247 : | edgomez | 1.38 | /* reduced_resolution_vop_enabled */ |
1248 : | } | ||
1249 : | |||
1250 : | edgomez | 1.42 | BitstreamPutBit(bs, 0); /* scalability */ |
1251 : | |||
1252 : | BitstreamPadAlways(bs); /* next_start_code(); */ | ||
1253 : | edgomez | 1.41 | |
1254 : | edgomez | 1.38 | /* fake divx5 id, to ensure compatibility with divx5 decoder */ |
1255 : | edgomez | 1.42 | #define DIVX5_ID "DivX999b000p" |
1256 : | if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) { | ||
1257 : | edgomez | 1.38 | BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
1258 : | } | ||
1259 : | |||
1260 : | /* xvid id */ | ||
1261 : | edgomez | 1.42 | { |
1262 : | edgomez | 1.43 | const char xvid_user_format[] = "XviD%04d%c"; |
1263 : | char xvid_user_data[100]; | ||
1264 : | sprintf(xvid_user_data, | ||
1265 : | xvid_user_format, | ||
1266 : | XVID_BS_VERSION, | ||
1267 : | (frame->vop_flags & XVID_VOP_CARTOON)?'C':'\0'); | ||
1268 : | BitstreamWriteUserData(bs, xvid_user_data, strlen(xvid_user_data)); | ||
1269 : | edgomez | 1.42 | } |
1270 : | Isibaar | 1.1 | } |
1271 : | |||
1272 : | |||
1273 : | /* | ||
1274 : | write vop header | ||
1275 : | */ | ||
1276 : | edgomez | 1.14 | void |
1277 : | edgomez | 1.38 | BitstreamWriteVopHeader( |
1278 : | Bitstream * const bs, | ||
1279 : | edgomez | 1.14 | const MBParam * pParam, |
1280 : | edgomez | 1.38 | const FRAMEINFO * const frame, |
1281 : | edgomez | 1.42 | int vop_coded, |
1282 : | unsigned int quant) | ||
1283 : | Isibaar | 1.1 | { |
1284 : | suxen_drol | 1.8 | uint32_t i; |
1285 : | chl | 1.28 | |
1286 : | edgomez | 1.42 | #if 0 |
1287 : | BitstreamPad(bs); | ||
1288 : | #endif | ||
1289 : | |||
1290 : | /* | ||
1291 : | * no padding here, anymore. You have to make sure that you are | ||
1292 : | * byte aligned, and that always 1-8 padding bits have been written | ||
1293 : | */ | ||
1294 : | edgomez | 1.38 | |
1295 : | edgomez | 1.14 | BitstreamPutBits(bs, VOP_START_CODE, 32); |
1296 : | |||
1297 : | BitstreamPutBits(bs, frame->coding_type, 2); | ||
1298 : | edgomez | 1.42 | #if 0 |
1299 : | DPRINTF(XVID_DEBUG_HEADER, "coding_type = %i\n", frame->coding_type); | ||
1300 : | #endif | ||
1301 : | Isibaar | 1.1 | |
1302 : | chl | 1.28 | for (i = 0; i < frame->seconds; i++) { |
1303 : | BitstreamPutBit(bs, 1); | ||
1304 : | } | ||
1305 : | BitstreamPutBit(bs, 0); | ||
1306 : | Isibaar | 1.1 | |
1307 : | WRITE_MARKER(); | ||
1308 : | |||
1309 : | edgomez | 1.42 | /* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
1310 : | edgomez | 1.43 | BitstreamPutBits(bs, frame->ticks, MAX(log2bin(pParam->fbase-1), 1)); |
1311 : | edgomez | 1.42 | #if 0 |
1312 : | DPRINTF("[%i:%i] %c", | ||
1313 : | frame->seconds, frame->ticks, | ||
1314 : | frame->coding_type == I_VOP ? 'I' : | ||
1315 : | frame->coding_type == P_VOP ? 'P' : | ||
1316 : | frame->coding_type == S_VOP ? 'S' : 'B'); | ||
1317 : | #endif | ||
1318 : | Isibaar | 1.1 | |
1319 : | WRITE_MARKER(); | ||
1320 : | |||
1321 : | suxen_drol | 1.17 | if (!vop_coded) { |
1322 : | BitstreamPutBits(bs, 0, 1); | ||
1323 : | edgomez | 1.41 | #if 0 |
1324 : | BitstreamPadAlways(bs); /* next_start_code() */ | ||
1325 : | #endif | ||
1326 : | /* NB: It's up to the function caller to write the next_start_code(). | ||
1327 : | * At the moment encoder.c respects that requisite because a VOP | ||
1328 : | * always ends with a next_start_code either if it's coded or not | ||
1329 : | * and encoder.c terminates a frame with a next_start_code in whatever | ||
1330 : | * case */ | ||
1331 : | suxen_drol | 1.17 | return; |
1332 : | } | ||
1333 : | |||
1334 : | edgomez | 1.42 | BitstreamPutBits(bs, 1, 1); /* vop_coded */ |
1335 : | Isibaar | 1.1 | |
1336 : | edgomez | 1.38 | if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
1337 : | suxen_drol | 1.7 | BitstreamPutBits(bs, frame->rounding_type, 1); |
1338 : | Isibaar | 1.1 | |
1339 : | edgomez | 1.42 | if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
1340 : | syskin | 1.48 | BitstreamPutBit(bs, 0); |
1341 : | edgomez | 1.38 | |
1342 : | edgomez | 1.42 | BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
1343 : | edgomez | 1.14 | |
1344 : | edgomez | 1.42 | if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
1345 : | BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_TOPFIELDFIRST)); | ||
1346 : | BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_ALTERNATESCAN)); | ||
1347 : | edgomez | 1.38 | } |
1348 : | edgomez | 1.42 | |
1349 : | edgomez | 1.38 | if (frame->coding_type == S_VOP) { |
1350 : | edgomez | 1.42 | if (1) { /* no_of_sprite_warping_points>=1 (we use 2!) */ |
1351 : | edgomez | 1.38 | int k; |
1352 : | edgomez | 1.42 | for (k=0;k<3;k++) |
1353 : | edgomez | 1.38 | { |
1354 : | edgomez | 1.42 | bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); /* du[k] */ |
1355 : | edgomez | 1.38 | WRITE_MARKER(); |
1356 : | edgomez | 1.42 | |
1357 : | bs_put_spritetrajectory(bs, frame->warp.duv[k].y ); /* dv[k] */ | ||
1358 : | edgomez | 1.38 | WRITE_MARKER(); |
1359 : | |||
1360 : | edgomez | 1.42 | if ((frame->vol_flags & XVID_VOL_QUARTERPEL)) |
1361 : | edgomez | 1.38 | { |
1362 : | edgomez | 1.42 | 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); |
1363 : | edgomez | 1.38 | } |
1364 : | else | ||
1365 : | { | ||
1366 : | edgomez | 1.42 | DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", k, frame->warp.duv[k].x, frame->warp.duv[k].y); |
1367 : | edgomez | 1.38 | } |
1368 : | } | ||
1369 : | } | ||
1370 : | h | 1.4 | } |
1371 : | |||
1372 : | edgomez | 1.38 | |
1373 : | edgomez | 1.42 | #if 0 |
1374 : | DPRINTF(XVID_DEBUG_HEADER, "quant = %i\n", quant); | ||
1375 : | #endif | ||
1376 : | |||
1377 : | BitstreamPutBits(bs, quant, 5); /* quantizer */ | ||
1378 : | edgomez | 1.14 | |
1379 : | suxen_drol | 1.7 | if (frame->coding_type != I_VOP) |
1380 : | edgomez | 1.42 | BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ |
1381 : | suxen_drol | 1.8 | |
1382 : | if (frame->coding_type == B_VOP) | ||
1383 : | edgomez | 1.42 | BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */ |
1384 : | edgomez | 1.38 | |
1385 : | } | ||
1386 : | |||
1387 : | edgomez | 1.42 | void |
1388 : | BitstreamWriteUserData(Bitstream * const bs, | ||
1389 : | uint8_t * data, | ||
1390 : | edgomez | 1.38 | const int length) |
1391 : | { | ||
1392 : | int i; | ||
1393 : | |||
1394 : | BitstreamPad(bs); | ||
1395 : | BitstreamPutBits(bs, USERDATA_START_CODE, 32); | ||
1396 : | |||
1397 : | for (i = 0; i < length; i++) { | ||
1398 : | BitstreamPutBits(bs, data[i], 8); | ||
1399 : | } | ||
1400 : | suxen_drol | 1.17 | |
1401 : | chl | 1.24 | } |
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