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1 : | edgomez | 1382 | /***************************************************************************** |
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 : | Skal | 1617 | * $Id: bitstream.c,v 1.52 2005-05-23 09:29:43 Skal Exp $ |
24 : | edgomez | 1382 | * |
25 : | ****************************************************************************/ | ||
26 : | Isibaar | 3 | |
27 : | edgomez | 851 | #include <string.h> |
28 : | #include <stdio.h> | ||
29 : | |||
30 : | Isibaar | 3 | #include "bitstream.h" |
31 : | #include "zigzag.h" | ||
32 : | Isibaar | 4 | #include "../quant/quant_matrix.h" |
33 : | edgomez | 851 | #include "mbcoding.h" |
34 : | Isibaar | 3 | |
35 : | chenm001 | 124 | |
36 : | Skal | 1617 | static const uint8_t log2_tab_16[16] = { 0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4 }; |
37 : | Skal | 1616 | |
38 : | static uint32_t __inline log2bin(uint32_t value) | ||
39 : | Isibaar | 3 | { |
40 : | Skal | 1616 | int n = 0; |
41 : | if (value & 0xffff0000) { | ||
42 : | value >>= 16; | ||
43 : | n += 16; | ||
44 : | } | ||
45 : | if (value & 0xff00) { | ||
46 : | value >>= 8; | ||
47 : | n += 8; | ||
48 : | } | ||
49 : | if (value & 0xf0) { | ||
50 : | value >>= 4; | ||
51 : | n += 4; | ||
52 : | } | ||
53 : | return n + log2_tab_16[value]; | ||
54 : | Isibaar | 3 | } |
55 : | |||
56 : | edgomez | 195 | static const uint32_t intra_dc_threshold_table[] = { |
57 : | 32, /* never use */ | ||
58 : | Isibaar | 3 | 13, |
59 : | 15, | ||
60 : | 17, | ||
61 : | 19, | ||
62 : | 21, | ||
63 : | 23, | ||
64 : | 1, | ||
65 : | }; | ||
66 : | |||
67 : | |||
68 : | edgomez | 195 | void |
69 : | bs_get_matrix(Bitstream * bs, | ||
70 : | uint8_t * matrix) | ||
71 : | { | ||
72 : | int i = 0; | ||
73 : | int last, value = 0; | ||
74 : | Isibaar | 4 | |
75 : | edgomez | 195 | do { |
76 : | last = value; | ||
77 : | value = BitstreamGetBits(bs, 8); | ||
78 : | matrix[scan_tables[0][i++]] = value; | ||
79 : | } | ||
80 : | while (value != 0 && i < 64); | ||
81 : | |||
82 : | syskin | 1480 | if (value != 0) return; |
83 : | |||
84 : | i--; | ||
85 : | edgomez | 195 | while (i < 64) { |
86 : | matrix[scan_tables[0][i++]] = last; | ||
87 : | } | ||
88 : | } | ||
89 : | |||
90 : | suxen_drol | 248 | |
91 : | |||
92 : | edgomez | 1382 | /* |
93 : | * for PVOP addbits == fcode - 1 | ||
94 : | * for BVOP addbits == max(fcode,bcode) - 1 | ||
95 : | * returns mbpos | ||
96 : | */ | ||
97 : | suxen_drol | 248 | int |
98 : | edgomez | 1382 | read_video_packet_header(Bitstream *bs, |
99 : | DECODER * dec, | ||
100 : | const int addbits, | ||
101 : | int * quant, | ||
102 : | edgomez | 851 | int * fcode_forward, |
103 : | int * fcode_backward, | ||
104 : | int * intra_dc_threshold) | ||
105 : | suxen_drol | 248 | { |
106 : | edgomez | 851 | int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits; |
107 : | int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1); | ||
108 : | suxen_drol | 248 | int mbnum; |
109 : | edgomez | 851 | int hec = 0; |
110 : | suxen_drol | 248 | |
111 : | BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); | ||
112 : | edgomez | 851 | BitstreamSkip(bs, startcode_bits); |
113 : | suxen_drol | 248 | |
114 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<video_packet_header>\n"); |
115 : | suxen_drol | 252 | |
116 : | edgomez | 851 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
117 : | { | ||
118 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
119 : | edgomez | 1382 | if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */)) |
120 : | edgomez | 851 | { |
121 : | BitstreamSkip(bs, 13); /* vop_width */ | ||
122 : | READ_MARKER(); | ||
123 : | BitstreamSkip(bs, 13); /* vop_height */ | ||
124 : | READ_MARKER(); | ||
125 : | BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */ | ||
126 : | READ_MARKER(); | ||
127 : | BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */ | ||
128 : | READ_MARKER(); | ||
129 : | } | ||
130 : | } | ||
131 : | suxen_drol | 248 | |
132 : | edgomez | 851 | mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ |
133 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "mbnum %i\n", mbnum); |
134 : | suxen_drol | 248 | |
135 : | edgomez | 851 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
136 : | { | ||
137 : | edgomez | 1382 | *quant = BitstreamGetBits(bs, dec->quant_bits); /* quant_scale */ |
138 : | DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant); | ||
139 : | edgomez | 851 | } |
140 : | suxen_drol | 248 | |
141 : | edgomez | 851 | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
142 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
143 : | |||
144 : | |||
145 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "header_extension_code %i\n", hec); |
146 : | edgomez | 851 | if (hec) |
147 : | { | ||
148 : | int time_base; | ||
149 : | int time_increment; | ||
150 : | int coding_type; | ||
151 : | suxen_drol | 248 | |
152 : | edgomez | 851 | for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */ |
153 : | READ_MARKER(); | ||
154 : | if (dec->time_inc_bits) | ||
155 : | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ | ||
156 : | READ_MARKER(); | ||
157 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"time %i:%i\n", time_base, time_increment); |
158 : | edgomez | 851 | |
159 : | coding_type = BitstreamGetBits(bs, 2); | ||
160 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"coding_type %i\n", coding_type); |
161 : | |||
162 : | edgomez | 851 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
163 : | { | ||
164 : | BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ | ||
165 : | if (coding_type != I_VOP) | ||
166 : | BitstreamSkip(bs, 1); /* vop_shape_coding_type */ | ||
167 : | } | ||
168 : | |||
169 : | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) | ||
170 : | { | ||
171 : | *intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
172 : | |||
173 : | if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP && | ||
174 : | dec->sprite_warping_points > 0) | ||
175 : | { | ||
176 : | edgomez | 1382 | /* TODO: sprite trajectory */ |
177 : | edgomez | 851 | } |
178 : | edgomez | 1382 | if (dec->reduced_resolution_enable && |
179 : | edgomez | 851 | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
180 : | (coding_type == P_VOP || coding_type == I_VOP)) | ||
181 : | { | ||
182 : | BitstreamSkip(bs, 1); /* XXX: vop_reduced_resolution */ | ||
183 : | } | ||
184 : | |||
185 : | if (coding_type != I_VOP && fcode_forward) | ||
186 : | { | ||
187 : | *fcode_forward = BitstreamGetBits(bs, 3); | ||
188 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"fcode_forward %i\n", *fcode_forward); |
189 : | edgomez | 851 | } |
190 : | |||
191 : | if (coding_type == B_VOP && fcode_backward) | ||
192 : | { | ||
193 : | *fcode_backward = BitstreamGetBits(bs, 3); | ||
194 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward); |
195 : | edgomez | 851 | } |
196 : | } | ||
197 : | } | ||
198 : | |||
199 : | if (dec->newpred_enable) | ||
200 : | { | ||
201 : | int vop_id; | ||
202 : | int vop_id_for_prediction; | ||
203 : | edgomez | 1382 | |
204 : | edgomez | 851 | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
205 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id); |
206 : | edgomez | 851 | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ |
207 : | { | ||
208 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
209 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
210 : | edgomez | 851 | } |
211 : | READ_MARKER(); | ||
212 : | } | ||
213 : | |||
214 : | suxen_drol | 248 | return mbnum; |
215 : | } | ||
216 : | |||
217 : | |||
218 : | |||
219 : | edgomez | 851 | |
220 : | /* vol estimation header */ | ||
221 : | static void | ||
222 : | read_vol_complexity_estimation_header(Bitstream * bs, DECODER * dec) | ||
223 : | { | ||
224 : | ESTIMATION * e = &dec->estimation; | ||
225 : | |||
226 : | e->method = BitstreamGetBits(bs, 2); /* estimation_method */ | ||
227 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"+ complexity_estimation_header; method=%i\n", e->method); |
228 : | edgomez | 851 | |
229 : | edgomez | 1382 | if (e->method == 0 || e->method == 1) |
230 : | edgomez | 851 | { |
231 : | if (!BitstreamGetBit(bs)) /* shape_complexity_estimation_disable */ | ||
232 : | { | ||
233 : | e->opaque = BitstreamGetBit(bs); /* opaque */ | ||
234 : | e->transparent = BitstreamGetBit(bs); /* transparent */ | ||
235 : | e->intra_cae = BitstreamGetBit(bs); /* intra_cae */ | ||
236 : | e->inter_cae = BitstreamGetBit(bs); /* inter_cae */ | ||
237 : | e->no_update = BitstreamGetBit(bs); /* no_update */ | ||
238 : | e->upsampling = BitstreamGetBit(bs); /* upsampling */ | ||
239 : | } | ||
240 : | |||
241 : | if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_1_disable */ | ||
242 : | { | ||
243 : | e->intra_blocks = BitstreamGetBit(bs); /* intra_blocks */ | ||
244 : | e->inter_blocks = BitstreamGetBit(bs); /* inter_blocks */ | ||
245 : | e->inter4v_blocks = BitstreamGetBit(bs); /* inter4v_blocks */ | ||
246 : | e->not_coded_blocks = BitstreamGetBit(bs); /* not_coded_blocks */ | ||
247 : | } | ||
248 : | } | ||
249 : | |||
250 : | READ_MARKER(); | ||
251 : | |||
252 : | if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_2_disable */ | ||
253 : | { | ||
254 : | e->dct_coefs = BitstreamGetBit(bs); /* dct_coefs */ | ||
255 : | e->dct_lines = BitstreamGetBit(bs); /* dct_lines */ | ||
256 : | e->vlc_symbols = BitstreamGetBit(bs); /* vlc_symbols */ | ||
257 : | e->vlc_bits = BitstreamGetBit(bs); /* vlc_bits */ | ||
258 : | } | ||
259 : | |||
260 : | if (!BitstreamGetBit(bs)) /* motion_compensation_complexity_disable */ | ||
261 : | { | ||
262 : | e->apm = BitstreamGetBit(bs); /* apm */ | ||
263 : | e->npm = BitstreamGetBit(bs); /* npm */ | ||
264 : | e->interpolate_mc_q = BitstreamGetBit(bs); /* interpolate_mc_q */ | ||
265 : | e->forw_back_mc_q = BitstreamGetBit(bs); /* forw_back_mc_q */ | ||
266 : | e->halfpel2 = BitstreamGetBit(bs); /* halfpel2 */ | ||
267 : | e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */ | ||
268 : | } | ||
269 : | |||
270 : | READ_MARKER(); | ||
271 : | |||
272 : | if (e->method == 1) | ||
273 : | { | ||
274 : | if (!BitstreamGetBit(bs)) /* version2_complexity_estimation_disable */ | ||
275 : | { | ||
276 : | e->sadct = BitstreamGetBit(bs); /* sadct */ | ||
277 : | e->quarterpel = BitstreamGetBit(bs); /* quarterpel */ | ||
278 : | } | ||
279 : | } | ||
280 : | } | ||
281 : | |||
282 : | |||
283 : | /* vop estimation header */ | ||
284 : | static void | ||
285 : | read_vop_complexity_estimation_header(Bitstream * bs, DECODER * dec, int coding_type) | ||
286 : | { | ||
287 : | ESTIMATION * e = &dec->estimation; | ||
288 : | |||
289 : | if (e->method == 0 || e->method == 1) | ||
290 : | { | ||
291 : | if (coding_type == I_VOP) { | ||
292 : | if (e->opaque) BitstreamSkip(bs, 8); /* dcecs_opaque */ | ||
293 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
294 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
295 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
296 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
297 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
298 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
299 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
300 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
301 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
302 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
303 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
304 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
305 : | } | ||
306 : | edgomez | 1382 | |
307 : | edgomez | 851 | if (coding_type == P_VOP) { |
308 : | if (e->opaque) BitstreamSkip(bs, 8); /* */ | ||
309 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
310 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
311 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
312 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
313 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
314 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
315 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
316 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
317 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
318 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
319 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
320 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
321 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
322 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
323 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
324 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
325 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
326 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
327 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
328 : | if (e->quarterpel) BitstreamSkip(bs, 8); /* */ | ||
329 : | } | ||
330 : | if (coding_type == B_VOP) { | ||
331 : | if (e->opaque) BitstreamSkip(bs, 8); /* */ | ||
332 : | if (e->transparent) BitstreamSkip(bs, 8); /* */ | ||
333 : | if (e->intra_cae) BitstreamSkip(bs, 8); /* */ | ||
334 : | if (e->inter_cae) BitstreamSkip(bs, 8); /* */ | ||
335 : | if (e->no_update) BitstreamSkip(bs, 8); /* */ | ||
336 : | if (e->upsampling) BitstreamSkip(bs, 8); /* */ | ||
337 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
338 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
339 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
340 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
341 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
342 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
343 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
344 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
345 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
346 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
347 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
348 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
349 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
350 : | if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ | ||
351 : | if (e->sadct) BitstreamSkip(bs, 8); /* */ | ||
352 : | if (e->quarterpel) BitstreamSkip(bs, 8); /* */ | ||
353 : | } | ||
354 : | |||
355 : | if (coding_type == S_VOP && dec->sprite_enable == SPRITE_STATIC) { | ||
356 : | if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ | ||
357 : | if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ | ||
358 : | if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ | ||
359 : | if (e->dct_lines) BitstreamSkip(bs, 8); /* */ | ||
360 : | if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ | ||
361 : | if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ | ||
362 : | if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ | ||
363 : | if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ | ||
364 : | if (e->apm) BitstreamSkip(bs, 8); /* */ | ||
365 : | if (e->npm) BitstreamSkip(bs, 8); /* */ | ||
366 : | if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ | ||
367 : | if (e->halfpel2) BitstreamSkip(bs, 8); /* */ | ||
368 : | if (e->halfpel4) BitstreamSkip(bs, 8); /* */ | ||
369 : | if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ | ||
370 : | } | ||
371 : | } | ||
372 : | } | ||
373 : | |||
374 : | |||
375 : | |||
376 : | |||
377 : | |||
378 : | Isibaar | 3 | /* |
379 : | decode headers | ||
380 : | returns coding_type, or -1 if error | ||
381 : | */ | ||
382 : | |||
383 : | suxen_drol | 252 | #define VIDOBJ_START_CODE_MASK 0x0000001f |
384 : | #define VIDOBJLAY_START_CODE_MASK 0x0000000f | ||
385 : | |||
386 : | edgomez | 195 | int |
387 : | BitstreamReadHeaders(Bitstream * bs, | ||
388 : | DECODER * dec, | ||
389 : | uint32_t * rounding, | ||
390 : | uint32_t * quant, | ||
391 : | uint32_t * fcode_forward, | ||
392 : | uint32_t * fcode_backward, | ||
393 : | edgomez | 851 | uint32_t * intra_dc_threshold, |
394 : | WARPPOINTS *gmc_warp) | ||
395 : | Isibaar | 3 | { |
396 : | uint32_t vol_ver_id; | ||
397 : | uint32_t coding_type; | ||
398 : | uint32_t start_code; | ||
399 : | edgomez | 195 | uint32_t time_incr = 0; |
400 : | edgomez | 876 | int32_t time_increment = 0; |
401 : | edgomez | 851 | int resize = 0; |
402 : | chenm001 | 156 | |
403 : | syskin | 1553 | while ((BitstreamPos(bs) >> 3) + 4 <= bs->length) { |
404 : | edgomez | 851 | |
405 : | Isibaar | 3 | BitstreamByteAlign(bs); |
406 : | start_code = BitstreamShowBits(bs, 32); | ||
407 : | |||
408 : | edgomez | 195 | if (start_code == VISOBJSEQ_START_CODE) { |
409 : | suxen_drol | 252 | |
410 : | int profile; | ||
411 : | |||
412 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object_sequence>\n"); |
413 : | suxen_drol | 252 | |
414 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* visual_object_sequence_start_code */ |
415 : | profile = BitstreamGetBits(bs, 8); /* profile_and_level_indication */ | ||
416 : | suxen_drol | 252 | |
417 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "profile_and_level_indication %i\n", profile); |
418 : | suxen_drol | 252 | |
419 : | edgomez | 195 | } else if (start_code == VISOBJSEQ_STOP_CODE) { |
420 : | suxen_drol | 252 | |
421 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* visual_object_sequence_stop_code */ |
422 : | suxen_drol | 252 | |
423 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n"); |
424 : | suxen_drol | 252 | |
425 : | edgomez | 195 | } else if (start_code == VISOBJ_START_CODE) { |
426 : | edgomez | 851 | int visobj_ver_id; |
427 : | suxen_drol | 252 | |
428 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n"); |
429 : | suxen_drol | 252 | |
430 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* visual_object_start_code */ |
431 : | if (BitstreamGetBit(bs)) /* is_visual_object_identified */ | ||
432 : | Isibaar | 3 | { |
433 : | edgomez | 1382 | visobj_ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
434 : | DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", visobj_ver_id); | ||
435 : | BitstreamSkip(bs, 3); /* visual_object_priority */ | ||
436 : | edgomez | 195 | } else { |
437 : | edgomez | 851 | visobj_ver_id = 1; |
438 : | Isibaar | 3 | } |
439 : | |||
440 : | edgomez | 1382 | if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
441 : | Isibaar | 3 | { |
442 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "visual_object_type != video\n"); |
443 : | Isibaar | 3 | return -1; |
444 : | } | ||
445 : | BitstreamSkip(bs, 4); | ||
446 : | |||
447 : | edgomez | 1382 | /* video_signal_type */ |
448 : | Isibaar | 3 | |
449 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* video_signal_type */ |
450 : | Isibaar | 3 | { |
451 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"+ video_signal_type\n"); |
452 : | BitstreamSkip(bs, 3); /* video_format */ | ||
453 : | BitstreamSkip(bs, 1); /* video_range */ | ||
454 : | if (BitstreamGetBit(bs)) /* color_description */ | ||
455 : | Isibaar | 3 | { |
456 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"+ color_description"); |
457 : | BitstreamSkip(bs, 8); /* color_primaries */ | ||
458 : | BitstreamSkip(bs, 8); /* transfer_characteristics */ | ||
459 : | BitstreamSkip(bs, 8); /* matrix_coefficients */ | ||
460 : | Isibaar | 3 | } |
461 : | } | ||
462 : | suxen_drol | 252 | } else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
463 : | |||
464 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<video_object>\n"); |
465 : | DPRINTF(XVID_DEBUG_HEADER, "vo id %i\n", start_code & VIDOBJ_START_CODE_MASK); | ||
466 : | suxen_drol | 252 | |
467 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* video_object_start_code */ |
468 : | suxen_drol | 252 | |
469 : | } else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { | ||
470 : | |||
471 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<video_object_layer>\n"); |
472 : | DPRINTF(XVID_DEBUG_HEADER, "vol id %i\n", start_code & VIDOBJLAY_START_CODE_MASK); | ||
473 : | suxen_drol | 252 | |
474 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* video_object_layer_start_code */ |
475 : | BitstreamSkip(bs, 1); /* random_accessible_vol */ | ||
476 : | Isibaar | 3 | |
477 : | edgomez | 1382 | BitstreamSkip(bs, 8); /* video_object_type_indication */ |
478 : | Isibaar | 3 | |
479 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* is_object_layer_identifier */ |
480 : | Isibaar | 3 | { |
481 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "+ is_object_layer_identifier\n"); |
482 : | vol_ver_id = BitstreamGetBits(bs, 4); /* video_object_layer_verid */ | ||
483 : | DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id); | ||
484 : | BitstreamSkip(bs, 3); /* video_object_layer_priority */ | ||
485 : | edgomez | 195 | } else { |
486 : | Isibaar | 3 | vol_ver_id = 1; |
487 : | } | ||
488 : | |||
489 : | edgomez | 851 | dec->aspect_ratio = BitstreamGetBits(bs, 4); |
490 : | |||
491 : | edgomez | 1382 | if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */ |
492 : | Isibaar | 3 | { |
493 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "+ aspect_ratio_info\n"); |
494 : | dec->par_width = BitstreamGetBits(bs, 8); /* par_width */ | ||
495 : | dec->par_height = BitstreamGetBits(bs, 8); /* par_height */ | ||
496 : | Isibaar | 3 | } |
497 : | |||
498 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* vol_control_parameters */ |
499 : | Isibaar | 3 | { |
500 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "+ vol_control_parameters\n"); |
501 : | BitstreamSkip(bs, 2); /* chroma_format */ | ||
502 : | dec->low_delay = BitstreamGetBit(bs); /* low_delay */ | ||
503 : | DPRINTF(XVID_DEBUG_HEADER, "low_delay %i\n", dec->low_delay); | ||
504 : | if (BitstreamGetBit(bs)) /* vbv_parameters */ | ||
505 : | Isibaar | 3 | { |
506 : | edgomez | 851 | unsigned int bitrate; |
507 : | unsigned int buffer_size; | ||
508 : | unsigned int occupancy; | ||
509 : | |||
510 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"+ vbv_parameters\n"); |
511 : | edgomez | 851 | |
512 : | edgomez | 1382 | bitrate = BitstreamGetBits(bs,15) << 15; /* first_half_bit_rate */ |
513 : | Isibaar | 3 | READ_MARKER(); |
514 : | edgomez | 1382 | bitrate |= BitstreamGetBits(bs,15); /* latter_half_bit_rate */ |
515 : | Isibaar | 3 | READ_MARKER(); |
516 : | edgomez | 1382 | |
517 : | buffer_size = BitstreamGetBits(bs, 15) << 3; /* first_half_vbv_buffer_size */ | ||
518 : | Isibaar | 3 | READ_MARKER(); |
519 : | edgomez | 1382 | buffer_size |= BitstreamGetBits(bs, 3); /* latter_half_vbv_buffer_size */ |
520 : | edgomez | 851 | |
521 : | edgomez | 1382 | occupancy = BitstreamGetBits(bs, 11) << 15; /* first_half_vbv_occupancy */ |
522 : | Isibaar | 3 | READ_MARKER(); |
523 : | edgomez | 1382 | occupancy |= BitstreamGetBits(bs, 15); /* latter_half_vbv_occupancy */ |
524 : | Isibaar | 3 | READ_MARKER(); |
525 : | edgomez | 195 | |
526 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"bitrate %d (unit=400 bps)\n", bitrate); |
527 : | DPRINTF(XVID_DEBUG_HEADER,"buffer_size %d (unit=16384 bits)\n", buffer_size); | ||
528 : | DPRINTF(XVID_DEBUG_HEADER,"occupancy %d (unit=64 bits)\n", occupancy); | ||
529 : | Isibaar | 3 | } |
530 : | edgomez | 851 | }else{ |
531 : | dec->low_delay = dec->low_delay_default; | ||
532 : | Isibaar | 3 | } |
533 : | |||
534 : | edgomez | 1382 | dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */ |
535 : | edgomez | 851 | |
536 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "shape %i\n", dec->shape); |
537 : | edgomez | 851 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
538 : | { | ||
539 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR,"non-rectangular shapes are not supported\n"); |
540 : | edgomez | 851 | } |
541 : | edgomez | 195 | |
542 : | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { | ||
543 : | edgomez | 1382 | BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */ |
544 : | Isibaar | 3 | } |
545 : | |||
546 : | READ_MARKER(); | ||
547 : | |||
548 : | edgomez | 1382 | /********************** for decode B-frame time ***********************/ |
549 : | dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ | ||
550 : | DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i\n", dec->time_inc_resolution); | ||
551 : | suxen_drol | 252 | |
552 : | edgomez | 851 | if (dec->time_inc_resolution > 0) { |
553 : | edgomez | 1466 | dec->time_inc_bits = MAX(log2bin(dec->time_inc_resolution-1), 1); |
554 : | edgomez | 195 | } else { |
555 : | edgomez | 1382 | /* for "old" xvid compatibility, set time_inc_bits = 1 */ |
556 : | Isibaar | 3 | dec->time_inc_bits = 1; |
557 : | } | ||
558 : | |||
559 : | READ_MARKER(); | ||
560 : | |||
561 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* fixed_vop_rate */ |
562 : | Isibaar | 3 | { |
563 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "+ fixed_vop_rate\n"); |
564 : | BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */ | ||
565 : | Isibaar | 3 | } |
566 : | |||
567 : | edgomez | 195 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
568 : | Isibaar | 3 | |
569 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { |
570 : | Isibaar | 3 | uint32_t width, height; |
571 : | |||
572 : | READ_MARKER(); | ||
573 : | edgomez | 1382 | width = BitstreamGetBits(bs, 13); /* video_object_layer_width */ |
574 : | Isibaar | 3 | READ_MARKER(); |
575 : | edgomez | 1382 | height = BitstreamGetBits(bs, 13); /* video_object_layer_height */ |
576 : | Isibaar | 3 | READ_MARKER(); |
577 : | |||
578 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
579 : | DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); | ||
580 : | suxen_drol | 252 | |
581 : | edgomez | 851 | if (dec->width != width || dec->height != height) |
582 : | { | ||
583 : | if (dec->fixed_dimensions) | ||
584 : | { | ||
585 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "decoder width/height does not match bitstream\n"); |
586 : | edgomez | 851 | return -1; |
587 : | } | ||
588 : | resize = 1; | ||
589 : | chenm001 | 294 | dec->width = width; |
590 : | dec->height = height; | ||
591 : | Isibaar | 3 | } |
592 : | } | ||
593 : | h | 69 | |
594 : | suxen_drol | 252 | dec->interlacing = BitstreamGetBit(bs); |
595 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "interlacing %i\n", dec->interlacing); |
596 : | Isibaar | 3 | |
597 : | edgomez | 1382 | if (!BitstreamGetBit(bs)) /* obmc_disable */ |
598 : | Isibaar | 3 | { |
599 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "obmc_disabled==false not supported\n"); |
600 : | /* TODO */ | ||
601 : | /* fucking divx4.02 has this enabled */ | ||
602 : | Isibaar | 3 | } |
603 : | |||
604 : | edgomez | 1382 | dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); /* sprite_enable */ |
605 : | edgomez | 851 | |
606 : | if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC) | ||
607 : | Isibaar | 3 | { |
608 : | edgomez | 851 | int low_latency_sprite_enable; |
609 : | |||
610 : | if (dec->sprite_enable != SPRITE_GMC) | ||
611 : | { | ||
612 : | int sprite_width; | ||
613 : | int sprite_height; | ||
614 : | int sprite_left_coord; | ||
615 : | int sprite_top_coord; | ||
616 : | edgomez | 1382 | sprite_width = BitstreamGetBits(bs, 13); /* sprite_width */ |
617 : | edgomez | 851 | READ_MARKER(); |
618 : | edgomez | 1382 | sprite_height = BitstreamGetBits(bs, 13); /* sprite_height */ |
619 : | edgomez | 851 | READ_MARKER(); |
620 : | edgomez | 1382 | sprite_left_coord = BitstreamGetBits(bs, 13); /* sprite_left_coordinate */ |
621 : | edgomez | 851 | READ_MARKER(); |
622 : | edgomez | 1382 | sprite_top_coord = BitstreamGetBits(bs, 13); /* sprite_top_coordinate */ |
623 : | edgomez | 851 | READ_MARKER(); |
624 : | } | ||
625 : | edgomez | 1382 | dec->sprite_warping_points = BitstreamGetBits(bs, 6); /* no_of_sprite_warping_points */ |
626 : | dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); /* sprite_warping_accuracy */ | ||
627 : | dec->sprite_brightness_change = BitstreamGetBits(bs, 1); /* brightness_change */ | ||
628 : | edgomez | 851 | if (dec->sprite_enable != SPRITE_GMC) |
629 : | { | ||
630 : | edgomez | 1382 | low_latency_sprite_enable = BitstreamGetBits(bs, 1); /* low_latency_sprite_enable */ |
631 : | edgomez | 851 | } |
632 : | Isibaar | 3 | } |
633 : | edgomez | 195 | |
634 : | if (vol_ver_id != 1 && | ||
635 : | dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { | ||
636 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* sadct_disable */ |
637 : | Isibaar | 3 | } |
638 : | |||
639 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* not_8_bit */ |
640 : | Isibaar | 3 | { |
641 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "not_8_bit==true (ignored)\n"); |
642 : | dec->quant_bits = BitstreamGetBits(bs, 4); /* quant_precision */ | ||
643 : | BitstreamSkip(bs, 4); /* bits_per_pixel */ | ||
644 : | edgomez | 195 | } else { |
645 : | Isibaar | 3 | dec->quant_bits = 5; |
646 : | } | ||
647 : | |||
648 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
649 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* no_gray_quant_update */ |
650 : | BitstreamSkip(bs, 1); /* composition_method */ | ||
651 : | BitstreamSkip(bs, 1); /* linear_composition */ | ||
652 : | Isibaar | 3 | } |
653 : | |||
654 : | edgomez | 1382 | dec->quant_type = BitstreamGetBit(bs); /* quant_type */ |
655 : | DPRINTF(XVID_DEBUG_HEADER, "quant_type %i\n", dec->quant_type); | ||
656 : | Isibaar | 3 | |
657 : | edgomez | 195 | if (dec->quant_type) { |
658 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* load_intra_quant_mat */ |
659 : | Isibaar | 3 | { |
660 : | Isibaar | 20 | uint8_t matrix[64]; |
661 : | edgomez | 195 | |
662 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat\n"); |
663 : | suxen_drol | 252 | |
664 : | Isibaar | 4 | bs_get_matrix(bs, matrix); |
665 : | edgomez | 1382 | set_intra_matrix(dec->mpeg_quant_matrices, matrix); |
666 : | edgomez | 195 | } else |
667 : | edgomez | 1382 | set_intra_matrix(dec->mpeg_quant_matrices, get_default_intra_matrix()); |
668 : | Isibaar | 4 | |
669 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* load_inter_quant_mat */ |
670 : | Isibaar | 3 | { |
671 : | edgomez | 195 | uint8_t matrix[64]; |
672 : | |||
673 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat\n"); |
674 : | |||
675 : | Isibaar | 4 | bs_get_matrix(bs, matrix); |
676 : | edgomez | 1382 | set_inter_matrix(dec->mpeg_quant_matrices, matrix); |
677 : | edgomez | 195 | } else |
678 : | edgomez | 1382 | set_inter_matrix(dec->mpeg_quant_matrices, get_default_inter_matrix()); |
679 : | Isibaar | 3 | |
680 : | edgomez | 195 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
681 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported\n"); |
682 : | Isibaar | 3 | return -1; |
683 : | } | ||
684 : | Isibaar | 4 | |
685 : | Isibaar | 3 | } |
686 : | |||
687 : | edgomez | 195 | |
688 : | if (vol_ver_id != 1) { | ||
689 : | edgomez | 1382 | dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */ |
690 : | DPRINTF(XVID_DEBUG_HEADER,"quarterpel %i\n", dec->quarterpel); | ||
691 : | Isibaar | 3 | } |
692 : | Isibaar | 333 | else |
693 : | dec->quarterpel = 0; | ||
694 : | Isibaar | 3 | |
695 : | edgomez | 1382 | |
696 : | edgomez | 851 | dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */ |
697 : | if (!dec->complexity_estimation_disable) | ||
698 : | Isibaar | 3 | { |
699 : | edgomez | 851 | read_vol_complexity_estimation_header(bs, dec); |
700 : | Isibaar | 3 | } |
701 : | |||
702 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* resync_marker_disable */ |
703 : | Isibaar | 3 | |
704 : | edgomez | 1382 | if (BitstreamGetBit(bs)) /* data_partitioned */ |
705 : | Isibaar | 3 | { |
706 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "data_partitioned not supported\n"); |
707 : | BitstreamSkip(bs, 1); /* reversible_vlc */ | ||
708 : | Isibaar | 3 | } |
709 : | |||
710 : | edgomez | 195 | if (vol_ver_id != 1) { |
711 : | edgomez | 851 | dec->newpred_enable = BitstreamGetBit(bs); |
712 : | edgomez | 1382 | if (dec->newpred_enable) /* newpred_enable */ |
713 : | Isibaar | 3 | { |
714 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "+ newpred_enable\n"); |
715 : | BitstreamSkip(bs, 2); /* requested_upstream_message_type */ | ||
716 : | BitstreamSkip(bs, 1); /* newpred_segment_type */ | ||
717 : | Isibaar | 3 | } |
718 : | edgomez | 851 | dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */ |
719 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution_enable %i\n", dec->reduced_resolution_enable); |
720 : | Isibaar | 3 | } |
721 : | edgomez | 851 | else |
722 : | { | ||
723 : | dec->newpred_enable = 0; | ||
724 : | dec->reduced_resolution_enable = 0; | ||
725 : | } | ||
726 : | edgomez | 195 | |
727 : | edgomez | 851 | dec->scalability = BitstreamGetBit(bs); /* scalability */ |
728 : | edgomez | 1382 | if (dec->scalability) |
729 : | Isibaar | 3 | { |
730 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
731 : | edgomez | 851 | BitstreamSkip(bs, 1); /* hierarchy_type */ |
732 : | BitstreamSkip(bs, 4); /* ref_layer_id */ | ||
733 : | BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */ | ||
734 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ | ||
735 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ | ||
736 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ | ||
737 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ | ||
738 : | BitstreamSkip(bs, 1); /* enhancement_type */ | ||
739 : | if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) { | ||
740 : | BitstreamSkip(bs, 1); /* use_ref_shape */ | ||
741 : | BitstreamSkip(bs, 1); /* use_ref_texture */ | ||
742 : | BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */ | ||
743 : | BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */ | ||
744 : | BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */ | ||
745 : | BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */ | ||
746 : | } | ||
747 : | Isibaar | 3 | return -1; |
748 : | } | ||
749 : | edgomez | 1382 | } else /* dec->shape == BINARY_ONLY */ |
750 : | Isibaar | 3 | { |
751 : | edgomez | 195 | if (vol_ver_id != 1) { |
752 : | edgomez | 851 | dec->scalability = BitstreamGetBit(bs); /* scalability */ |
753 : | edgomez | 1382 | if (dec->scalability) |
754 : | Isibaar | 3 | { |
755 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
756 : | edgomez | 851 | BitstreamSkip(bs, 4); /* ref_layer_id */ |
757 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ | ||
758 : | BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ | ||
759 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ | ||
760 : | BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ | ||
761 : | Isibaar | 3 | return -1; |
762 : | } | ||
763 : | } | ||
764 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* resync_marker_disable */ |
765 : | Isibaar | 3 | |
766 : | } | ||
767 : | |||
768 : | edgomez | 851 | return (resize ? -3 : -2 ); /* VOL */ |
769 : | |||
770 : | edgomez | 195 | } else if (start_code == GRPOFVOP_START_CODE) { |
771 : | suxen_drol | 252 | |
772 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<group_of_vop>\n"); |
773 : | suxen_drol | 252 | |
774 : | Isibaar | 3 | BitstreamSkip(bs, 32); |
775 : | { | ||
776 : | int hours, minutes, seconds; | ||
777 : | edgomez | 195 | |
778 : | Isibaar | 3 | hours = BitstreamGetBits(bs, 5); |
779 : | minutes = BitstreamGetBits(bs, 6); | ||
780 : | READ_MARKER(); | ||
781 : | seconds = BitstreamGetBits(bs, 6); | ||
782 : | edgomez | 1382 | |
783 : | DPRINTF(XVID_DEBUG_HEADER, "time %ih%im%is\n", hours,minutes,seconds); | ||
784 : | Isibaar | 3 | } |
785 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* closed_gov */ |
786 : | BitstreamSkip(bs, 1); /* broken_link */ | ||
787 : | suxen_drol | 252 | |
788 : | edgomez | 195 | } else if (start_code == VOP_START_CODE) { |
789 : | suxen_drol | 252 | |
790 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<vop>\n"); |
791 : | suxen_drol | 252 | |
792 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* vop_start_code */ |
793 : | Isibaar | 3 | |
794 : | edgomez | 1382 | coding_type = BitstreamGetBits(bs, 2); /* vop_coding_type */ |
795 : | DPRINTF(XVID_DEBUG_HEADER, "coding_type %i\n", coding_type); | ||
796 : | Isibaar | 3 | |
797 : | edgomez | 1382 | /*********************** for decode B-frame time ***********************/ |
798 : | while (BitstreamGetBit(bs) != 0) /* time_base */ | ||
799 : | chenm001 | 156 | time_incr++; |
800 : | edgomez | 195 | |
801 : | Isibaar | 3 | READ_MARKER(); |
802 : | edgomez | 195 | |
803 : | if (dec->time_inc_bits) { | ||
804 : | edgomez | 1382 | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ |
805 : | Isibaar | 3 | } |
806 : | suxen_drol | 240 | |
807 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "time_base %i\n", time_incr); |
808 : | DPRINTF(XVID_DEBUG_HEADER, "time_increment %i\n", time_increment); | ||
809 : | suxen_drol | 252 | |
810 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_TIMECODE, "%c %i:%i\n", |
811 : | edgomez | 851 | coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S', |
812 : | suxen_drol | 240 | time_incr, time_increment); |
813 : | |||
814 : | edgomez | 195 | if (coding_type != B_VOP) { |
815 : | dec->last_time_base = dec->time_base; | ||
816 : | chenm001 | 156 | dec->time_base += time_incr; |
817 : | edgomez | 1466 | dec->time = dec->time_base*dec->time_inc_resolution + time_increment; |
818 : | dec->time_pp = (int32_t)(dec->time - dec->last_non_b_time); | ||
819 : | edgomez | 195 | dec->last_non_b_time = dec->time; |
820 : | } else { | ||
821 : | edgomez | 1466 | dec->time = (dec->last_time_base + time_incr)*dec->time_inc_resolution + time_increment; |
822 : | dec->time_bp = dec->time_pp - (int32_t)(dec->last_non_b_time - dec->time); | ||
823 : | chenm001 | 156 | } |
824 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
825 : | DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); | ||
826 : | Isibaar | 3 | |
827 : | READ_MARKER(); | ||
828 : | |||
829 : | edgomez | 1382 | if (!BitstreamGetBit(bs)) /* vop_coded */ |
830 : | Isibaar | 3 | { |
831 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "vop_coded==false\n"); |
832 : | Isibaar | 3 | return N_VOP; |
833 : | } | ||
834 : | |||
835 : | edgomez | 851 | if (dec->newpred_enable) |
836 : | { | ||
837 : | int vop_id; | ||
838 : | int vop_id_for_prediction; | ||
839 : | edgomez | 1382 | |
840 : | edgomez | 851 | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
841 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id); |
842 : | edgomez | 851 | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ |
843 : | { | ||
844 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
845 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
846 : | edgomez | 851 | } |
847 : | READ_MARKER(); | ||
848 : | } | ||
849 : | Isibaar | 3 | |
850 : | edgomez | 851 | |
851 : | edgomez | 1382 | |
852 : | /* fix a little bug by MinChen <chenm002@163.com> */ | ||
853 : | edgomez | 195 | if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
854 : | edgomez | 851 | ( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) { |
855 : | edgomez | 1382 | *rounding = BitstreamGetBit(bs); /* rounding_type */ |
856 : | DPRINTF(XVID_DEBUG_HEADER, "rounding %i\n", *rounding); | ||
857 : | Isibaar | 3 | } |
858 : | |||
859 : | edgomez | 851 | if (dec->reduced_resolution_enable && |
860 : | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && | ||
861 : | (coding_type == P_VOP || coding_type == I_VOP)) { | ||
862 : | Isibaar | 3 | |
863 : | syskin | 1566 | if (BitstreamGetBit(bs)); |
864 : | DPRINTF(XVID_DEBUG_ERROR, "RRV not supported (anymore)\n"); | ||
865 : | edgomez | 851 | } |
866 : | |||
867 : | edgomez | 195 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
868 : | edgomez | 851 | if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) { |
869 : | edgomez | 195 | |
870 : | edgomez | 851 | uint32_t width, height; |
871 : | uint32_t horiz_mc_ref, vert_mc_ref; | ||
872 : | Isibaar | 3 | |
873 : | edgomez | 851 | width = BitstreamGetBits(bs, 13); |
874 : | READ_MARKER(); | ||
875 : | height = BitstreamGetBits(bs, 13); | ||
876 : | READ_MARKER(); | ||
877 : | horiz_mc_ref = BitstreamGetBits(bs, 13); | ||
878 : | READ_MARKER(); | ||
879 : | vert_mc_ref = BitstreamGetBits(bs, 13); | ||
880 : | READ_MARKER(); | ||
881 : | Isibaar | 3 | |
882 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
883 : | DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); | ||
884 : | DPRINTF(XVID_DEBUG_HEADER, "horiz_mc_ref %i\n", horiz_mc_ref); | ||
885 : | DPRINTF(XVID_DEBUG_HEADER, "vert_mc_ref %i\n", vert_mc_ref); | ||
886 : | edgomez | 851 | } |
887 : | |||
888 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ |
889 : | if (BitstreamGetBit(bs)) /* vop_constant_alpha */ | ||
890 : | Isibaar | 3 | { |
891 : | edgomez | 1382 | BitstreamSkip(bs, 8); /* vop_constant_alpha_value */ |
892 : | Isibaar | 3 | } |
893 : | } | ||
894 : | |||
895 : | edgomez | 851 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
896 : | edgomez | 195 | |
897 : | edgomez | 851 | if (!dec->complexity_estimation_disable) |
898 : | { | ||
899 : | read_vop_complexity_estimation_header(bs, dec, coding_type); | ||
900 : | } | ||
901 : | |||
902 : | edgomez | 1382 | /* intra_dc_vlc_threshold */ |
903 : | edgomez | 195 | *intra_dc_threshold = |
904 : | intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
905 : | Isibaar | 3 | |
906 : | edgomez | 851 | dec->top_field_first = 0; |
907 : | dec->alternate_vertical_scan = 0; | ||
908 : | |||
909 : | edgomez | 195 | if (dec->interlacing) { |
910 : | suxen_drol | 252 | dec->top_field_first = BitstreamGetBit(bs); |
911 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "interlace top_field_first %i\n", dec->top_field_first); |
912 : | suxen_drol | 252 | dec->alternate_vertical_scan = BitstreamGetBit(bs); |
913 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "interlace alternate_vertical_scan %i\n", dec->alternate_vertical_scan); |
914 : | |||
915 : | h | 69 | } |
916 : | Isibaar | 3 | } |
917 : | edgomez | 195 | |
918 : | edgomez | 851 | if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) { |
919 : | |||
920 : | int i; | ||
921 : | |||
922 : | for (i = 0 ; i < dec->sprite_warping_points; i++) | ||
923 : | { | ||
924 : | int length; | ||
925 : | int x = 0, y = 0; | ||
926 : | |||
927 : | /* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */ | ||
928 : | length = bs_get_spritetrajectory(bs); | ||
929 : | if(length){ | ||
930 : | x= BitstreamGetBits(bs, length); | ||
931 : | if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
932 : | x = - (x ^ ((1 << length) - 1)); | ||
933 : | } | ||
934 : | READ_MARKER(); | ||
935 : | edgomez | 1382 | |
936 : | edgomez | 851 | length = bs_get_spritetrajectory(bs); |
937 : | if(length){ | ||
938 : | y = BitstreamGetBits(bs, length); | ||
939 : | if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
940 : | y = - (y ^ ((1 << length) - 1)); | ||
941 : | } | ||
942 : | READ_MARKER(); | ||
943 : | |||
944 : | gmc_warp->duv[i].x = x; | ||
945 : | gmc_warp->duv[i].y = y; | ||
946 : | |||
947 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", i, x, y); |
948 : | edgomez | 851 | } |
949 : | |||
950 : | if (dec->sprite_brightness_change) | ||
951 : | { | ||
952 : | edgomez | 1382 | /* XXX: brightness_change_factor() */ |
953 : | edgomez | 851 | } |
954 : | if (dec->sprite_enable == SPRITE_STATIC) | ||
955 : | { | ||
956 : | edgomez | 1382 | /* XXX: todo */ |
957 : | edgomez | 851 | } |
958 : | |||
959 : | } | ||
960 : | |||
961 : | edgomez | 1382 | if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) /* vop_quant */ |
962 : | Isibaar | 157 | *quant = 1; |
963 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant); |
964 : | edgomez | 195 | |
965 : | if (coding_type != I_VOP) { | ||
966 : | edgomez | 1382 | *fcode_forward = BitstreamGetBits(bs, 3); /* fcode_forward */ |
967 : | DPRINTF(XVID_DEBUG_HEADER, "fcode_forward %i\n", *fcode_forward); | ||
968 : | Isibaar | 3 | } |
969 : | edgomez | 195 | |
970 : | if (coding_type == B_VOP) { | ||
971 : | edgomez | 1382 | *fcode_backward = BitstreamGetBits(bs, 3); /* fcode_backward */ |
972 : | DPRINTF(XVID_DEBUG_HEADER, "fcode_backward %i\n", *fcode_backward); | ||
973 : | Isibaar | 3 | } |
974 : | edgomez | 195 | if (!dec->scalability) { |
975 : | if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && | ||
976 : | (coding_type != I_VOP)) { | ||
977 : | edgomez | 1382 | BitstreamSkip(bs, 1); /* vop_shape_coding_type */ |
978 : | chenm001 | 156 | } |
979 : | } | ||
980 : | Isibaar | 3 | return coding_type; |
981 : | suxen_drol | 252 | |
982 : | edgomez | 195 | } else if (start_code == USERDATA_START_CODE) { |
983 : | edgomez | 851 | char tmp[256]; |
984 : | int i, version, build; | ||
985 : | char packed; | ||
986 : | suxen_drol | 252 | |
987 : | edgomez | 1382 | BitstreamSkip(bs, 32); /* user_data_start_code */ |
988 : | suxen_drol | 252 | |
989 : | edgomez | 1547 | memset(tmp, 0, 256); |
990 : | edgomez | 851 | tmp[0] = BitstreamShowBits(bs, 8); |
991 : | edgomez | 1382 | |
992 : | edgomez | 851 | for(i = 1; i < 256; i++){ |
993 : | tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF); | ||
994 : | edgomez | 1382 | |
995 : | if(tmp[i] == 0) | ||
996 : | edgomez | 851 | break; |
997 : | edgomez | 1382 | |
998 : | edgomez | 851 | BitstreamSkip(bs, 8); |
999 : | } | ||
1000 : | suxen_drol | 252 | |
1001 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s\n", tmp); |
1002 : | |||
1003 : | Isibaar | 1055 | /* read xvid bitstream version */ |
1004 : | if(strncmp(tmp, "XviD", 4) == 0) { | ||
1005 : | edgomez | 1382 | if (tmp[strlen(tmp)-1] == 'C') { |
1006 : | sscanf(tmp, "XviD%dC", &dec->bs_version); | ||
1007 : | dec->cartoon_mode = 1; | ||
1008 : | } | ||
1009 : | else | ||
1010 : | sscanf(tmp, "XviD%d", &dec->bs_version); | ||
1011 : | |||
1012 : | edgomez | 1466 | DPRINTF(XVID_DEBUG_HEADER, "xvid bitstream version=%i\n", dec->bs_version); |
1013 : | Isibaar | 1055 | } |
1014 : | edgomez | 851 | |
1015 : | /* divx detection */ | ||
1016 : | i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed); | ||
1017 : | if (i < 2) | ||
1018 : | i = sscanf(tmp, "DivX%db%d%c", &version, &build, &packed); | ||
1019 : | edgomez | 1382 | |
1020 : | edgomez | 851 | if (i >= 2) |
1021 : | { | ||
1022 : | dec->packed_mode = (i == 3 && packed == 'p'); | ||
1023 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER, "divx version=%i, build=%i packed=%i\n", |
1024 : | edgomez | 851 | version, build, dec->packed_mode); |
1025 : | } | ||
1026 : | |||
1027 : | edgomez | 1382 | } else /* start_code == ? */ |
1028 : | Isibaar | 3 | { |
1029 : | edgomez | 195 | if (BitstreamShowBits(bs, 24) == 0x000001) { |
1030 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_STARTCODE, "<unknown: %x>\n", BitstreamShowBits(bs, 32)); |
1031 : | Isibaar | 3 | } |
1032 : | BitstreamSkip(bs, 8); | ||
1033 : | } | ||
1034 : | } | ||
1035 : | |||
1036 : | edgomez | 1382 | #if 0 |
1037 : | DPRINTF("*** WARNING: no vop_start_code found"); | ||
1038 : | #endif | ||
1039 : | edgomez | 195 | return -1; /* ignore it */ |
1040 : | Isibaar | 3 | } |
1041 : | |||
1042 : | |||
1043 : | /* write custom quant matrix */ | ||
1044 : | |||
1045 : | edgomez | 195 | static void |
1046 : | bs_put_matrix(Bitstream * bs, | ||
1047 : | edgomez | 1382 | const uint16_t * matrix) |
1048 : | Isibaar | 3 | { |
1049 : | int i, j; | ||
1050 : | const int last = matrix[scan_tables[0][63]]; | ||
1051 : | |||
1052 : | suxen_drol | 233 | for (j = 63; j > 0 && matrix[scan_tables[0][j - 1]] == last; j--); |
1053 : | Isibaar | 3 | |
1054 : | edgomez | 195 | for (i = 0; i <= j; i++) { |
1055 : | Isibaar | 3 | BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
1056 : | } | ||
1057 : | |||
1058 : | edgomez | 195 | if (j < 63) { |
1059 : | Isibaar | 3 | BitstreamPutBits(bs, 0, 8); |
1060 : | } | ||
1061 : | } | ||
1062 : | |||
1063 : | |||
1064 : | /* | ||
1065 : | write vol header | ||
1066 : | */ | ||
1067 : | edgomez | 195 | void |
1068 : | BitstreamWriteVolHeader(Bitstream * const bs, | ||
1069 : | const MBParam * pParam, | ||
1070 : | edgomez | 851 | const FRAMEINFO * const frame) |
1071 : | Isibaar | 3 | { |
1072 : | edgomez | 851 | static const unsigned int vo_id = 0; |
1073 : | static const unsigned int vol_id = 0; | ||
1074 : | edgomez | 1382 | int vol_ver_id = 1; |
1075 : | int vol_type_ind = VIDOBJLAY_TYPE_SIMPLE; | ||
1076 : | int vol_profile = pParam->profile; | ||
1077 : | edgomez | 851 | |
1078 : | edgomez | 1382 | if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
1079 : | (pParam->vol_flags & XVID_VOL_GMC) || | ||
1080 : | (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) | ||
1081 : | edgomez | 851 | vol_ver_id = 2; |
1082 : | |||
1083 : | edgomez | 1382 | if ((pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) { |
1084 : | vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE; | ||
1085 : | } | ||
1086 : | edgomez | 851 | |
1087 : | suxen_drol | 1610 | if ((pParam->vol_flags & (XVID_VOL_MPEGQUANT|XVID_VOL_QUARTERPEL|XVID_VOL_GMC|XVID_VOL_INTERLACING)) || |
1088 : | pParam->max_bframes>0) { | ||
1089 : | edgomez | 1382 | vol_type_ind = VIDOBJLAY_TYPE_ASP; |
1090 : | } | ||
1091 : | edgomez | 851 | |
1092 : | edgomez | 1382 | /* visual_object_sequence_start_code */ |
1093 : | #if 0 | ||
1094 : | BitstreamPad(bs); | ||
1095 : | #endif | ||
1096 : | edgomez | 851 | |
1097 : | edgomez | 1382 | /* |
1098 : | * no padding here, anymore. You have to make sure that you are | ||
1099 : | * byte aligned, and that always 1-8 padding bits have been written | ||
1100 : | */ | ||
1101 : | |||
1102 : | if (!vol_profile) { | ||
1103 : | /* Profile was not set by client app, use the more permissive profile | ||
1104 : | * compatible with the vol_type_id */ | ||
1105 : | switch(vol_type_ind) { | ||
1106 : | case VIDOBJLAY_TYPE_ASP: | ||
1107 : | vol_profile = 0xf5; /* ASP level 5 */ | ||
1108 : | break; | ||
1109 : | case VIDOBJLAY_TYPE_ART_SIMPLE: | ||
1110 : | vol_profile = 0x94; /* ARTS level 4 */ | ||
1111 : | break; | ||
1112 : | default: | ||
1113 : | vol_profile = 0x03; /* Simple level 3 */ | ||
1114 : | break; | ||
1115 : | } | ||
1116 : | } | ||
1117 : | |||
1118 : | /* Write the VOS header */ | ||
1119 : | edgomez | 851 | BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32); |
1120 : | edgomez | 1382 | BitstreamPutBits(bs, vol_profile, 8); /* profile_and_level_indication */ |
1121 : | edgomez | 851 | |
1122 : | edgomez | 1382 | |
1123 : | /* visual_object_start_code */ | ||
1124 : | edgomez | 195 | BitstreamPad(bs); |
1125 : | edgomez | 851 | BitstreamPutBits(bs, VISOBJ_START_CODE, 32); |
1126 : | edgomez | 1382 | BitstreamPutBits(bs, 0, 1); /* is_visual_object_identifier */ |
1127 : | edgomez | 1098 | |
1128 : | /* Video type */ | ||
1129 : | edgomez | 1382 | BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); /* visual_object_type */ |
1130 : | edgomez | 1098 | BitstreamPutBit(bs, 0); /* video_signal_type */ |
1131 : | |||
1132 : | edgomez | 1382 | /* video object_start_code & vo_id */ |
1133 : | BitstreamPadAlways(bs); /* next_start_code() */ | ||
1134 : | edgomez | 851 | BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32); |
1135 : | Isibaar | 3 | |
1136 : | edgomez | 1382 | /* video_object_layer_start_code & vol_id */ |
1137 : | edgomez | 851 | BitstreamPad(bs); |
1138 : | BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32); | ||
1139 : | Isibaar | 3 | |
1140 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* random_accessible_vol */ |
1141 : | BitstreamPutBits(bs, vol_type_ind, 8); /* video_object_type_indication */ | ||
1142 : | suxen_drol | 164 | |
1143 : | edgomez | 1382 | if (vol_ver_id == 1) { |
1144 : | BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */ | ||
1145 : | } else { | ||
1146 : | BitstreamPutBit(bs, 1); /* is_object_layer_identified */ | ||
1147 : | BitstreamPutBits(bs, vol_ver_id, 4); /* vol_ver_id == 2 */ | ||
1148 : | BitstreamPutBits(bs, 4, 3); /* vol_ver_priority (1==highest, 7==lowest) */ | ||
1149 : | edgomez | 851 | } |
1150 : | edgomez | 1382 | |
1151 : | /* Aspect ratio */ | ||
1152 : | BitstreamPutBits(bs, pParam->par, 4); /* aspect_ratio_info (1=1:1) */ | ||
1153 : | if(pParam->par == XVID_PAR_EXT) { | ||
1154 : | BitstreamPutBits(bs, pParam->par_width, 8); | ||
1155 : | BitstreamPutBits(bs, pParam->par_height, 8); | ||
1156 : | edgomez | 851 | } |
1157 : | chl | 387 | |
1158 : | edgomez | 1382 | BitstreamPutBit(bs, 1); /* vol_control_parameters */ |
1159 : | BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ | ||
1160 : | edgomez | 487 | |
1161 : | edgomez | 851 | if (pParam->max_bframes > 0) { |
1162 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* low_delay */ |
1163 : | edgomez | 851 | } else |
1164 : | { | ||
1165 : | edgomez | 1382 | BitstreamPutBit(bs, 1); /* low_delay */ |
1166 : | edgomez | 851 | } |
1167 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* vbv_parameters (0=not given) */ |
1168 : | Isibaar | 3 | |
1169 : | edgomez | 1382 | BitstreamPutBits(bs, 0, 2); /* video_object_layer_shape (0=rectangular) */ |
1170 : | edgomez | 851 | |
1171 : | Isibaar | 3 | WRITE_MARKER(); |
1172 : | edgomez | 195 | |
1173 : | edgomez | 1382 | /* |
1174 : | * time_inc_resolution; ignored by current decore versions | ||
1175 : | * eg. 2fps res=2 inc=1 | ||
1176 : | * 25fps res=25 inc=1 | ||
1177 : | * 29.97fps res=30000 inc=1001 | ||
1178 : | edgomez | 195 | */ |
1179 : | suxen_drol | 163 | BitstreamPutBits(bs, pParam->fbase, 16); |
1180 : | Isibaar | 3 | |
1181 : | WRITE_MARKER(); | ||
1182 : | |||
1183 : | Skal | 1617 | if (pParam->fincr>0) { |
1184 : | BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ | ||
1185 : | BitstreamPutBits(bs, pParam->fincr, MAX(log2bin(pParam->fbase-1),1)); /* fixed_vop_time_increment */ | ||
1186 : | }else{ | ||
1187 : | BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */ | ||
1188 : | } | ||
1189 : | Isibaar | 3 | |
1190 : | WRITE_MARKER(); | ||
1191 : | edgomez | 1382 | BitstreamPutBits(bs, pParam->width, 13); /* width */ |
1192 : | Isibaar | 3 | WRITE_MARKER(); |
1193 : | edgomez | 1382 | BitstreamPutBits(bs, pParam->height, 13); /* height */ |
1194 : | Isibaar | 3 | WRITE_MARKER(); |
1195 : | edgomez | 195 | |
1196 : | edgomez | 1382 | BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_INTERLACING); /* interlace */ |
1197 : | BitstreamPutBit(bs, 1); /* obmc_disable (overlapped block motion compensation) */ | ||
1198 : | Isibaar | 3 | |
1199 : | edgomez | 1382 | if (vol_ver_id != 1) |
1200 : | { if ((pParam->vol_flags & XVID_VOL_GMC)) | ||
1201 : | { BitstreamPutBits(bs, 2, 2); /* sprite_enable=='GMC' */ | ||
1202 : | BitstreamPutBits(bs, 3, 6); /* no_of_sprite_warping_points */ | ||
1203 : | BitstreamPutBits(bs, 3, 2); /* sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 */ | ||
1204 : | BitstreamPutBit(bs, 0); /* sprite_brightness_change (not supported) */ | ||
1205 : | edgomez | 851 | |
1206 : | edgomez | 1382 | /* |
1207 : | * currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3 | ||
1208 : | * for DivX5 compatability | ||
1209 : | */ | ||
1210 : | edgomez | 851 | |
1211 : | } else | ||
1212 : | edgomez | 1382 | BitstreamPutBits(bs, 0, 2); /* sprite_enable==off */ |
1213 : | edgomez | 851 | } |
1214 : | else | ||
1215 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* sprite_enable==off */ |
1216 : | edgomez | 851 | |
1217 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* not_8_bit */ |
1218 : | edgomez | 851 | |
1219 : | edgomez | 1382 | /* quant_type 0=h.263 1=mpeg4(quantizer tables) */ |
1220 : | BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT); | ||
1221 : | edgomez | 195 | |
1222 : | edgomez | 1382 | if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) { |
1223 : | BitstreamPutBit(bs, is_custom_intra_matrix(pParam->mpeg_quant_matrices)); /* load_intra_quant_mat */ | ||
1224 : | if(is_custom_intra_matrix(pParam->mpeg_quant_matrices)) | ||
1225 : | bs_put_matrix(bs, get_intra_matrix(pParam->mpeg_quant_matrices)); | ||
1226 : | Isibaar | 3 | |
1227 : | edgomez | 1382 | BitstreamPutBit(bs, is_custom_inter_matrix(pParam->mpeg_quant_matrices)); /* load_inter_quant_mat */ |
1228 : | if(is_custom_inter_matrix(pParam->mpeg_quant_matrices)) | ||
1229 : | bs_put_matrix(bs, get_inter_matrix(pParam->mpeg_quant_matrices)); | ||
1230 : | Isibaar | 3 | } |
1231 : | |||
1232 : | edgomez | 851 | if (vol_ver_id != 1) { |
1233 : | edgomez | 1382 | if ((pParam->vol_flags & XVID_VOL_QUARTERPEL)) |
1234 : | BitstreamPutBit(bs, 1); /* quarterpel */ | ||
1235 : | edgomez | 851 | else |
1236 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* no quarterpel */ |
1237 : | edgomez | 851 | } |
1238 : | |||
1239 : | edgomez | 1382 | BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ |
1240 : | BitstreamPutBit(bs, 1); /* resync_marker_disable */ | ||
1241 : | BitstreamPutBit(bs, 0); /* data_partitioned */ | ||
1242 : | edgomez | 851 | |
1243 : | edgomez | 1382 | if (vol_ver_id != 1) { |
1244 : | BitstreamPutBit(bs, 0); /* newpred_enable */ | ||
1245 : | BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0); | ||
1246 : | edgomez | 851 | /* reduced_resolution_vop_enabled */ |
1247 : | } | ||
1248 : | |||
1249 : | edgomez | 1382 | BitstreamPutBit(bs, 0); /* scalability */ |
1250 : | edgomez | 1098 | |
1251 : | edgomez | 1382 | BitstreamPadAlways(bs); /* next_start_code(); */ |
1252 : | |||
1253 : | suxen_drol | 1607 | /* divx5 userdata string */ |
1254 : | Skal | 1617 | #define DIVX5_ID ((char *)"DivX503b1393") |
1255 : | suxen_drol | 1607 | if ((pParam->global_flags & XVID_GLOBAL_DIVX5_USERDATA)) { |
1256 : | BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); | ||
1257 : | if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) | ||
1258 : | BitstreamPutBits(bs, 'p', 8); | ||
1259 : | edgomez | 851 | } |
1260 : | |||
1261 : | /* xvid id */ | ||
1262 : | edgomez | 1382 | { |
1263 : | edgomez | 1451 | const char xvid_user_format[] = "XviD%04d%c"; |
1264 : | char xvid_user_data[100]; | ||
1265 : | sprintf(xvid_user_data, | ||
1266 : | xvid_user_format, | ||
1267 : | XVID_BS_VERSION, | ||
1268 : | (frame->vop_flags & XVID_VOP_CARTOON)?'C':'\0'); | ||
1269 : | BitstreamWriteUserData(bs, xvid_user_data, strlen(xvid_user_data)); | ||
1270 : | edgomez | 1382 | } |
1271 : | Isibaar | 3 | } |
1272 : | |||
1273 : | |||
1274 : | /* | ||
1275 : | write vop header | ||
1276 : | */ | ||
1277 : | edgomez | 195 | void |
1278 : | edgomez | 851 | BitstreamWriteVopHeader( |
1279 : | Bitstream * const bs, | ||
1280 : | edgomez | 195 | const MBParam * pParam, |
1281 : | edgomez | 851 | const FRAMEINFO * const frame, |
1282 : | edgomez | 1382 | int vop_coded, |
1283 : | unsigned int quant) | ||
1284 : | Isibaar | 3 | { |
1285 : | suxen_drol | 152 | uint32_t i; |
1286 : | chl | 387 | |
1287 : | edgomez | 1382 | #if 0 |
1288 : | BitstreamPad(bs); | ||
1289 : | #endif | ||
1290 : | edgomez | 851 | |
1291 : | edgomez | 1382 | /* |
1292 : | * no padding here, anymore. You have to make sure that you are | ||
1293 : | * byte aligned, and that always 1-8 padding bits have been written | ||
1294 : | */ | ||
1295 : | |||
1296 : | edgomez | 195 | BitstreamPutBits(bs, VOP_START_CODE, 32); |
1297 : | Isibaar | 3 | |
1298 : | edgomez | 195 | BitstreamPutBits(bs, frame->coding_type, 2); |
1299 : | edgomez | 1382 | #if 0 |
1300 : | DPRINTF(XVID_DEBUG_HEADER, "coding_type = %i\n", frame->coding_type); | ||
1301 : | #endif | ||
1302 : | edgomez | 195 | |
1303 : | for (i = 0; i < frame->seconds; i++) { | ||
1304 : | suxen_drol | 152 | BitstreamPutBit(bs, 1); |
1305 : | } | ||
1306 : | BitstreamPutBit(bs, 0); | ||
1307 : | Isibaar | 3 | |
1308 : | WRITE_MARKER(); | ||
1309 : | |||
1310 : | edgomez | 1382 | /* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
1311 : | edgomez | 1451 | BitstreamPutBits(bs, frame->ticks, MAX(log2bin(pParam->fbase-1), 1)); |
1312 : | edgomez | 1382 | #if 0 |
1313 : | DPRINTF("[%i:%i] %c", | ||
1314 : | frame->seconds, frame->ticks, | ||
1315 : | frame->coding_type == I_VOP ? 'I' : | ||
1316 : | frame->coding_type == P_VOP ? 'P' : | ||
1317 : | frame->coding_type == S_VOP ? 'S' : 'B'); | ||
1318 : | #endif | ||
1319 : | Isibaar | 3 | |
1320 : | WRITE_MARKER(); | ||
1321 : | |||
1322 : | suxen_drol | 229 | if (!vop_coded) { |
1323 : | BitstreamPutBits(bs, 0, 1); | ||
1324 : | edgomez | 1098 | #if 0 |
1325 : | BitstreamPadAlways(bs); /* next_start_code() */ | ||
1326 : | #endif | ||
1327 : | /* NB: It's up to the function caller to write the next_start_code(). | ||
1328 : | * At the moment encoder.c respects that requisite because a VOP | ||
1329 : | * always ends with a next_start_code either if it's coded or not | ||
1330 : | * and encoder.c terminates a frame with a next_start_code in whatever | ||
1331 : | * case */ | ||
1332 : | suxen_drol | 229 | return; |
1333 : | } | ||
1334 : | |||
1335 : | edgomez | 1382 | BitstreamPutBits(bs, 1, 1); /* vop_coded */ |
1336 : | Isibaar | 3 | |
1337 : | edgomez | 851 | if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
1338 : | suxen_drol | 136 | BitstreamPutBits(bs, frame->rounding_type, 1); |
1339 : | Isibaar | 3 | |
1340 : | edgomez | 1382 | if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
1341 : | syskin | 1566 | BitstreamPutBit(bs, 0); |
1342 : | edgomez | 195 | |
1343 : | edgomez | 1382 | BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
1344 : | edgomez | 851 | |
1345 : | edgomez | 1382 | if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
1346 : | BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_TOPFIELDFIRST)); | ||
1347 : | BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_ALTERNATESCAN)); | ||
1348 : | h | 69 | } |
1349 : | edgomez | 1382 | |
1350 : | edgomez | 851 | if (frame->coding_type == S_VOP) { |
1351 : | edgomez | 1382 | if (1) { /* no_of_sprite_warping_points>=1 (we use 2!) */ |
1352 : | edgomez | 851 | int k; |
1353 : | edgomez | 1382 | for (k=0;k<3;k++) |
1354 : | edgomez | 851 | { |
1355 : | edgomez | 1382 | bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); /* du[k] */ |
1356 : | edgomez | 851 | WRITE_MARKER(); |
1357 : | edgomez | 1382 | |
1358 : | bs_put_spritetrajectory(bs, frame->warp.duv[k].y ); /* dv[k] */ | ||
1359 : | edgomez | 851 | WRITE_MARKER(); |
1360 : | h | 69 | |
1361 : | edgomez | 1382 | if ((frame->vol_flags & XVID_VOL_QUARTERPEL)) |
1362 : | edgomez | 851 | { |
1363 : | edgomez | 1382 | 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); |
1364 : | edgomez | 851 | } |
1365 : | else | ||
1366 : | { | ||
1367 : | edgomez | 1382 | DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", k, frame->warp.duv[k].x, frame->warp.duv[k].y); |
1368 : | edgomez | 851 | } |
1369 : | } | ||
1370 : | } | ||
1371 : | } | ||
1372 : | edgomez | 195 | |
1373 : | edgomez | 851 | |
1374 : | edgomez | 1382 | #if 0 |
1375 : | DPRINTF(XVID_DEBUG_HEADER, "quant = %i\n", quant); | ||
1376 : | #endif | ||
1377 : | edgomez | 851 | |
1378 : | edgomez | 1382 | BitstreamPutBits(bs, quant, 5); /* quantizer */ |
1379 : | |||
1380 : | suxen_drol | 136 | if (frame->coding_type != I_VOP) |
1381 : | edgomez | 1382 | BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ |
1382 : | suxen_drol | 152 | |
1383 : | if (frame->coding_type == B_VOP) | ||
1384 : | edgomez | 1382 | BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */ |
1385 : | suxen_drol | 152 | |
1386 : | Isibaar | 3 | } |
1387 : | edgomez | 851 | |
1388 : | edgomez | 1382 | void |
1389 : | BitstreamWriteUserData(Bitstream * const bs, | ||
1390 : | Skal | 1617 | const char *data, |
1391 : | const unsigned int length) | ||
1392 : | edgomez | 851 | { |
1393 : | int i; | ||
1394 : | |||
1395 : | BitstreamPad(bs); | ||
1396 : | BitstreamPutBits(bs, USERDATA_START_CODE, 32); | ||
1397 : | |||
1398 : | for (i = 0; i < length; i++) { | ||
1399 : | BitstreamPutBits(bs, data[i], 8); | ||
1400 : | } | ||
1401 : | |||
1402 : | } | ||
1403 : | Skal | 1616 | |
1404 : | /* | ||
1405 : | * Group of VOP | ||
1406 : | */ | ||
1407 : | void | ||
1408 : | BitstreamWriteGroupOfVopHeader(Bitstream * const bs, | ||
1409 : | const MBParam * pParam, | ||
1410 : | uint32_t is_closed_gov) | ||
1411 : | { | ||
1412 : | int64_t time = (pParam->m_stamp + (pParam->fbase/2)) / pParam->fbase; | ||
1413 : | int hours, minutes, seconds; | ||
1414 : | |||
1415 : | /* compute time_code */ | ||
1416 : | seconds = time % 60; time /= 60; | ||
1417 : | minutes = time % 60; time /= 60; | ||
1418 : | hours = time % 24; /* don't overflow */ | ||
1419 : | |||
1420 : | BitstreamPutBits(bs, GRPOFVOP_START_CODE, 32); | ||
1421 : | BitstreamPutBits(bs, hours, 5); | ||
1422 : | BitstreamPutBits(bs, minutes, 6); | ||
1423 : | BitstreamPutBit(bs, 1); | ||
1424 : | BitstreamPutBits(bs, seconds, 6); | ||
1425 : | BitstreamPutBits(bs, is_closed_gov, 1); | ||
1426 : | BitstreamPutBits(bs, 0, 1); /* broken_link */ | ||
1427 : | } | ||
1428 : | |||
1429 : | /* | ||
1430 : | * End of Sequence | ||
1431 : | */ | ||
1432 : | void | ||
1433 : | BitstreamWriteEndOfSequence(Bitstream * const bs) | ||
1434 : | { | ||
1435 : | BitstreamPadAlways(bs); | ||
1436 : | BitstreamPutBits(bs, VISOBJSEQ_STOP_CODE, 32); | ||
1437 : | } | ||
1438 : | |||
1439 : | /* | ||
1440 : | * Video Packet (resync marker) | ||
1441 : | */ | ||
1442 : | |||
1443 : | void write_video_packet_header(Bitstream * const bs, | ||
1444 : | const MBParam * pParam, | ||
1445 : | const FRAMEINFO * const frame, | ||
1446 : | int mbnum) | ||
1447 : | { | ||
1448 : | const int mbnum_bits = log2bin(pParam->mb_width * pParam->mb_height - 1); | ||
1449 : | uint32_t nbitsresyncmarker; | ||
1450 : | Skal | 1617 | |
1451 : | if (frame->coding_type == I_VOP) | ||
1452 : | nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER; /* 16 zeros followed by a 1. */ | ||
1453 : | else if (frame->coding_type == P_VOP) | ||
1454 : | nbitsresyncmarker = NUMBITS_VP_RESYNC_MARKER-1 + frame->fcode; | ||
1455 : | else /* B_VOP */ | ||
1456 : | nbitsresyncmarker = MAX(NUMBITS_VP_RESYNC_MARKER, NUMBITS_VP_RESYNC_MARKER-1 + MAX(frame->fcode, frame->bcode)); | ||
1457 : | |||
1458 : | Skal | 1616 | BitstreamPadAlways(bs); |
1459 : | BitstreamPutBits(bs, RESYNC_MARKER, nbitsresyncmarker); | ||
1460 : | BitstreamPutBits(bs, mbnum, mbnum_bits); | ||
1461 : | BitstreamPutBits(bs, frame->quant, 5); | ||
1462 : | BitstreamPutBit(bs, 0); /* hec */ | ||
1463 : | } |
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