Parent Directory | Revision Log
Revision 1.28.2.6 - (view) (download)
1 : | Isibaar | 1.1 | /****************************************************************************** |
2 : | * * | ||
3 : | * This file is part of XviD, a free MPEG-4 video encoder/decoder * | ||
4 : | * * | ||
5 : | * XviD is an implementation of a part of one or more MPEG-4 Video tools * | ||
6 : | * as specified in ISO/IEC 14496-2 standard. Those intending to use this * | ||
7 : | * software module in hardware or software products are advised that its * | ||
8 : | * use may infringe existing patents or copyrights, and any such use * | ||
9 : | * would be at such party's own risk. The original developer of this * | ||
10 : | * software module and his/her company, and subsequent editors and their * | ||
11 : | * companies, will have no liability for use of this software or * | ||
12 : | * modifications or derivatives thereof. * | ||
13 : | * * | ||
14 : | * XviD is free software; you can redistribute it and/or modify it * | ||
15 : | * under the terms of the GNU General Public License as published by * | ||
16 : | * the Free Software Foundation; either version 2 of the License, or * | ||
17 : | * (at your option) any later version. * | ||
18 : | * * | ||
19 : | * XviD is distributed in the hope that it will be useful, but * | ||
20 : | * WITHOUT ANY WARRANTY; without even the implied warranty of * | ||
21 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | ||
22 : | * GNU General Public License for more details. * | ||
23 : | * * | ||
24 : | * You should have received a copy of the GNU General Public License * | ||
25 : | * along with this program; if not, write to the Free Software * | ||
26 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * | ||
27 : | * * | ||
28 : | ******************************************************************************/ | ||
29 : | |||
30 : | /****************************************************************************** | ||
31 : | * * | ||
32 : | * bitstream.c * | ||
33 : | * * | ||
34 : | * Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> * | ||
35 : | * * | ||
36 : | * For more information visit the XviD homepage: http://www.xvid.org * | ||
37 : | * * | ||
38 : | ******************************************************************************/ | ||
39 : | |||
40 : | /****************************************************************************** | ||
41 : | chenm001 | 1.16 | * * |
42 : | Isibaar | 1.1 | * Revision history: * |
43 : | chenm001 | 1.16 | * * |
44 : | chl | 1.28.2.4 | * 28.10.2002 GMC support - gruel * |
45 : | Isibaar | 1.28.2.3 | * 04.10.2002 qpel support - Isibaar * |
46 : | chenm001 | 1.23 | * 11.07.2002 add VOP width & height return to dec when dec->width * |
47 : | * or dec->height is 0 (for use in examples/ex1.c) * | ||
48 : | * MinChen <chenm001@163.com> * | ||
49 : | * 22.05.2002 bs_put_matrix fix * | ||
50 : | suxen_drol | 1.17 | * 20.05.2002 added BitstreamWriteUserData * |
51 : | Isibaar | 1.28.2.3 | * 19.06.2002 Fix a little bug in use custom quant matrix * |
52 : | * MinChen <chenm001@163.com> * | ||
53 : | * 08.05.2002 add low_delay support for B_VOP decode * | ||
54 : | * MinChen <chenm001@163.com> * | ||
55 : | suxen_drol | 1.12 | * 06.05.2002 low_delay * |
56 : | suxen_drol | 1.11 | * 06.05.2002 fixed fincr/fbase error * |
57 : | * 01.05.2002 added BVOP support to BitstreamWriteVopHeader * | ||
58 : | chenm001 | 1.6 | * 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> * |
59 : | chenm001 | 1.16 | * 26.03.2002 interlacing support * |
60 : | * 03.03.2002 qmatrix writing * | ||
61 : | * 03.03.2002 merged BITREADER and BITWRITER * | ||
62 : | Isibaar | 1.28.2.3 | * 30.02.2002 intra_dc_threshold support * |
63 : | * 04.12.2001 support for additional headers * | ||
64 : | * 16.12.2001 inital version * | ||
65 : | * * | ||
66 : | Isibaar | 1.1 | ******************************************************************************/ |
67 : | |||
68 : | |||
69 : | Isibaar | 1.28.2.6 | #include <string.h> |
70 : | Isibaar | 1.1 | #include "bitstream.h" |
71 : | #include "zigzag.h" | ||
72 : | Isibaar | 1.2 | #include "../quant/quant_matrix.h" |
73 : | chl | 1.28.2.4 | #include "mbcoding.h" |
74 : | Isibaar | 1.1 | |
75 : | chenm001 | 1.6 | |
76 : | edgomez | 1.14 | static uint32_t __inline |
77 : | log2bin(uint32_t value) | ||
78 : | Isibaar | 1.1 | { |
79 : | chenm001 | 1.6 | /* Changed by Chenm001 */ |
80 : | #ifndef WIN32 | ||
81 : | Isibaar | 1.1 | int n = 0; |
82 : | edgomez | 1.14 | |
83 : | while (value) { | ||
84 : | Isibaar | 1.1 | value >>= 1; |
85 : | n++; | ||
86 : | } | ||
87 : | return n; | ||
88 : | chenm001 | 1.6 | #else |
89 : | edgomez | 1.14 | __asm { |
90 : | suxen_drol | 1.15 | bsr eax, value |
91 : | inc eax | ||
92 : | } | ||
93 : | chenm001 | 1.6 | #endif |
94 : | Isibaar | 1.1 | } |
95 : | |||
96 : | |||
97 : | edgomez | 1.14 | static const uint32_t intra_dc_threshold_table[] = { |
98 : | 32, /* never use */ | ||
99 : | Isibaar | 1.1 | 13, |
100 : | 15, | ||
101 : | 17, | ||
102 : | 19, | ||
103 : | 21, | ||
104 : | 23, | ||
105 : | 1, | ||
106 : | }; | ||
107 : | |||
108 : | |||
109 : | edgomez | 1.14 | void |
110 : | bs_get_matrix(Bitstream * bs, | ||
111 : | uint8_t * matrix) | ||
112 : | { | ||
113 : | int i = 0; | ||
114 : | int last, value = 0; | ||
115 : | |||
116 : | do { | ||
117 : | last = value; | ||
118 : | value = BitstreamGetBits(bs, 8); | ||
119 : | matrix[scan_tables[0][i++]] = value; | ||
120 : | } | ||
121 : | while (value != 0 && i < 64); | ||
122 : | chenm001 | 1.16 | i--; // fix little bug at coeff not full |
123 : | edgomez | 1.14 | |
124 : | while (i < 64) { | ||
125 : | matrix[scan_tables[0][i++]] = last; | ||
126 : | } | ||
127 : | } | ||
128 : | Isibaar | 1.2 | |
129 : | suxen_drol | 1.21 | |
130 : | |||
131 : | // for PVOP addbits == fcode - 1 | ||
132 : | // for BVOP addbits == max(fcode,bcode) - 1 | ||
133 : | // returns mbpos | ||
134 : | int | ||
135 : | suxen_drol | 1.28.2.5 | read_video_packet_header(Bitstream *bs, |
136 : | DECODER * dec, | ||
137 : | const int addbits, | ||
138 : | int * quant, | ||
139 : | int * fcode_forward, | ||
140 : | int * fcode_backward, | ||
141 : | int * intra_dc_threshold) | ||
142 : | suxen_drol | 1.21 | { |
143 : | suxen_drol | 1.28.2.5 | int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits; |
144 : | int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1); | ||
145 : | suxen_drol | 1.21 | int mbnum; |
146 : | suxen_drol | 1.28.2.5 | int hec = 0; |
147 : | suxen_drol | 1.21 | |
148 : | BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); | ||
149 : | suxen_drol | 1.28.2.5 | BitstreamSkip(bs, startcode_bits); |
150 : | suxen_drol | 1.21 | |
151 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_STARTCODE, "<video_packet_header>"); |
152 : | |||
153 : | suxen_drol | 1.28.2.5 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
154 : | { | ||
155 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
156 : | if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */)) | ||
157 : | { | ||
158 : | BitstreamSkip(bs, 13); /* vop_width */ | ||
159 : | READ_MARKER(); | ||
160 : | BitstreamSkip(bs, 13); /* vop_height */ | ||
161 : | READ_MARKER(); | ||
162 : | BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */ | ||
163 : | READ_MARKER(); | ||
164 : | BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */ | ||
165 : | READ_MARKER(); | ||
166 : | } | ||
167 : | } | ||
168 : | suxen_drol | 1.21 | |
169 : | suxen_drol | 1.28.2.5 | mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ |
170 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "mbnum %i", mbnum); |
171 : | suxen_drol | 1.21 | |
172 : | suxen_drol | 1.28.2.5 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
173 : | { | ||
174 : | *quant = BitstreamGetBits(bs, 5); /* quant_scale */ | ||
175 : | DPRINTF(DPRINTF_HEADER, "quant %i", *quant); | ||
176 : | } | ||
177 : | |||
178 : | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) | ||
179 : | hec = BitstreamGetBit(bs); /* header_extension_code */ | ||
180 : | |||
181 : | suxen_drol | 1.21 | |
182 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "header_extension_code %i", hec); |
183 : | suxen_drol | 1.28.2.5 | if (hec) |
184 : | { | ||
185 : | int time_base; | ||
186 : | int time_increment; | ||
187 : | int coding_type; | ||
188 : | |||
189 : | for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */ | ||
190 : | READ_MARKER(); | ||
191 : | if (dec->time_inc_bits) | ||
192 : | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ | ||
193 : | READ_MARKER(); | ||
194 : | DPRINTF(DPRINTF_HEADER,"time %i:%i", time_base, time_increment); | ||
195 : | |||
196 : | coding_type = BitstreamGetBits(bs, 2); | ||
197 : | DPRINTF(DPRINTF_HEADER,"coding_type %i", coding_type); | ||
198 : | |||
199 : | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) | ||
200 : | { | ||
201 : | BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ | ||
202 : | if (coding_type != I_VOP) | ||
203 : | BitstreamSkip(bs, 1); /* vop_shape_coding_type */ | ||
204 : | } | ||
205 : | |||
206 : | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) | ||
207 : | { | ||
208 : | *intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
209 : | |||
210 : | if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP && | ||
211 : | dec->sprite_warping_points > 0) | ||
212 : | { | ||
213 : | // TODO: sprite trajectory | ||
214 : | } | ||
215 : | if (dec->reduced_resolution_enable && | ||
216 : | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && | ||
217 : | (coding_type == P_VOP || coding_type == I_VOP)) | ||
218 : | { | ||
219 : | BitstreamSkip(bs, 1); /* vop_reduced_resolution */ | ||
220 : | } | ||
221 : | |||
222 : | if (coding_type != I_VOP && fcode_forward) | ||
223 : | { | ||
224 : | *fcode_forward = BitstreamGetBits(bs, 3); | ||
225 : | DPRINTF(DPRINTF_HEADER,"fcode_forward %i", *fcode_forward); | ||
226 : | } | ||
227 : | |||
228 : | if (coding_type == B_VOP && fcode_backward) | ||
229 : | { | ||
230 : | *fcode_backward = BitstreamGetBits(bs, 3); | ||
231 : | DPRINTF(DPRINTF_HEADER,"fcode_backward %i", fcode_backward); | ||
232 : | } | ||
233 : | } | ||
234 : | |||
235 : | } | ||
236 : | |||
237 : | if (dec->newpred_enable) | ||
238 : | { | ||
239 : | int vop_id; | ||
240 : | int vop_id_for_prediction; | ||
241 : | |||
242 : | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
243 : | DPRINTF(DPRINTF_HEADER, "vop_id %i", vop_id); | ||
244 : | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ | ||
245 : | { | ||
246 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
247 : | DPRINTF(DPRINTF_HEADER, "vop_id_for_prediction %i", vop_id_for_prediction); | ||
248 : | } | ||
249 : | READ_MARKER(); | ||
250 : | } | ||
251 : | suxen_drol | 1.21 | |
252 : | return mbnum; | ||
253 : | } | ||
254 : | |||
255 : | |||
256 : | |||
257 : | Isibaar | 1.1 | /* |
258 : | decode headers | ||
259 : | returns coding_type, or -1 if error | ||
260 : | */ | ||
261 : | |||
262 : | suxen_drol | 1.22 | #define VIDOBJ_START_CODE_MASK 0x0000001f |
263 : | #define VIDOBJLAY_START_CODE_MASK 0x0000000f | ||
264 : | |||
265 : | edgomez | 1.14 | int |
266 : | BitstreamReadHeaders(Bitstream * bs, | ||
267 : | DECODER * dec, | ||
268 : | uint32_t * rounding, | ||
269 : | suxen_drol | 1.28.2.5 | uint32_t * reduced_resolution, |
270 : | edgomez | 1.14 | uint32_t * quant, |
271 : | uint32_t * fcode_forward, | ||
272 : | uint32_t * fcode_backward, | ||
273 : | suxen_drol | 1.28.2.5 | uint32_t * intra_dc_threshold, |
274 : | VECTOR * gmc_mv) | ||
275 : | Isibaar | 1.1 | { |
276 : | uint32_t vol_ver_id; | ||
277 : | uint32_t coding_type; | ||
278 : | uint32_t start_code; | ||
279 : | edgomez | 1.14 | uint32_t time_incr = 0; |
280 : | int32_t time_increment; | ||
281 : | suxen_drol | 1.28.2.5 | int resize = 0; |
282 : | chenm001 | 1.9 | |
283 : | edgomez | 1.14 | do { |
284 : | suxen_drol | 1.28.2.5 | |
285 : | Isibaar | 1.1 | BitstreamByteAlign(bs); |
286 : | start_code = BitstreamShowBits(bs, 32); | ||
287 : | |||
288 : | edgomez | 1.14 | if (start_code == VISOBJSEQ_START_CODE) { |
289 : | suxen_drol | 1.22 | |
290 : | int profile; | ||
291 : | |||
292 : | DPRINTF(DPRINTF_STARTCODE, "<visual_object_sequence>"); | ||
293 : | |||
294 : | edgomez | 1.14 | BitstreamSkip(bs, 32); // visual_object_sequence_start_code |
295 : | suxen_drol | 1.22 | profile = BitstreamGetBits(bs, 8); // profile_and_level_indication |
296 : | |||
297 : | DPRINTF(DPRINTF_HEADER, "profile_and_level_indication %i", profile); | ||
298 : | |||
299 : | edgomez | 1.14 | } else if (start_code == VISOBJSEQ_STOP_CODE) { |
300 : | suxen_drol | 1.22 | |
301 : | edgomez | 1.14 | BitstreamSkip(bs, 32); // visual_object_sequence_stop_code |
302 : | suxen_drol | 1.22 | |
303 : | DPRINTF(DPRINTF_STARTCODE, "</visual_object_sequence>"); | ||
304 : | |||
305 : | edgomez | 1.14 | } else if (start_code == VISOBJ_START_CODE) { |
306 : | suxen_drol | 1.22 | |
307 : | DPRINTF(DPRINTF_STARTCODE, "<visual_object>"); | ||
308 : | |||
309 : | edgomez | 1.14 | BitstreamSkip(bs, 32); // visual_object_start_code |
310 : | if (BitstreamGetBit(bs)) // is_visual_object_identified | ||
311 : | Isibaar | 1.1 | { |
312 : | edgomez | 1.14 | vol_ver_id = BitstreamGetBits(bs, 4); // visual_object_ver_id |
313 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); |
314 : | edgomez | 1.14 | BitstreamSkip(bs, 3); // visual_object_priority |
315 : | } else { | ||
316 : | Isibaar | 1.1 | vol_ver_id = 1; |
317 : | } | ||
318 : | |||
319 : | if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) // visual_object_type | ||
320 : | { | ||
321 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_ERROR, "visual_object_type != video"); |
322 : | Isibaar | 1.1 | return -1; |
323 : | } | ||
324 : | BitstreamSkip(bs, 4); | ||
325 : | |||
326 : | // video_signal_type | ||
327 : | |||
328 : | edgomez | 1.14 | if (BitstreamGetBit(bs)) // video_signal_type |
329 : | Isibaar | 1.1 | { |
330 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER,"+ video_signal_type"); |
331 : | edgomez | 1.14 | BitstreamSkip(bs, 3); // video_format |
332 : | BitstreamSkip(bs, 1); // video_range | ||
333 : | if (BitstreamGetBit(bs)) // color_description | ||
334 : | Isibaar | 1.1 | { |
335 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER,"+ color_description"); |
336 : | edgomez | 1.14 | BitstreamSkip(bs, 8); // color_primaries |
337 : | BitstreamSkip(bs, 8); // transfer_characteristics | ||
338 : | BitstreamSkip(bs, 8); // matrix_coefficients | ||
339 : | Isibaar | 1.1 | } |
340 : | } | ||
341 : | suxen_drol | 1.22 | } else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
342 : | |||
343 : | DPRINTF(DPRINTF_STARTCODE, "<video_object>"); | ||
344 : | DPRINTF(DPRINTF_HEADER, "vo id %i", start_code & VIDOBJ_START_CODE_MASK); | ||
345 : | |||
346 : | edgomez | 1.14 | BitstreamSkip(bs, 32); // video_object_start_code |
347 : | suxen_drol | 1.22 | |
348 : | } else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { | ||
349 : | |||
350 : | DPRINTF(DPRINTF_STARTCODE, "<video_object_layer>"); | ||
351 : | DPRINTF(DPRINTF_HEADER, "vol id %i", start_code & VIDOBJLAY_START_CODE_MASK); | ||
352 : | |||
353 : | edgomez | 1.14 | BitstreamSkip(bs, 32); // video_object_layer_start_code |
354 : | Isibaar | 1.1 | |
355 : | edgomez | 1.14 | BitstreamSkip(bs, 1); // random_accessible_vol |
356 : | Isibaar | 1.1 | |
357 : | // video_object_type_indication | ||
358 : | suxen_drol | 1.28.2.5 | if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && |
359 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && | ||
360 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && | ||
361 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_ACE && | ||
362 : | BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_ART_SIMPLE && | ||
363 : | BitstreamShowBits(bs, 8) != 0) // BUGGY DIVX | ||
364 : | Isibaar | 1.1 | { |
365 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_ERROR,"video_object_type_indication %i not supported ", |
366 : | BitstreamShowBits(bs, 8)); | ||
367 : | Isibaar | 1.1 | return -1; |
368 : | } | ||
369 : | BitstreamSkip(bs, 8); | ||
370 : | |||
371 : | |||
372 : | edgomez | 1.14 | if (BitstreamGetBit(bs)) // is_object_layer_identifier |
373 : | Isibaar | 1.1 | { |
374 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "+ is_object_layer_identifier"); |
375 : | edgomez | 1.14 | vol_ver_id = BitstreamGetBits(bs, 4); // video_object_layer_verid |
376 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); |
377 : | edgomez | 1.14 | BitstreamSkip(bs, 3); // video_object_layer_priority |
378 : | } else { | ||
379 : | Isibaar | 1.1 | vol_ver_id = 1; |
380 : | } | ||
381 : | |||
382 : | suxen_drol | 1.28.2.5 | dec->aspect_ratio = BitstreamGetBits(bs, 4); |
383 : | |||
384 : | if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) // aspect_ratio_info | ||
385 : | Isibaar | 1.1 | { |
386 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "+ aspect_ratio_info"); |
387 : | suxen_drol | 1.28.2.5 | dec->par_width = BitstreamGetBits(bs, 8); // par_width |
388 : | dec->par_height = BitstreamGetBits(bs, 8); // par_height | ||
389 : | Isibaar | 1.1 | } |
390 : | |||
391 : | edgomez | 1.14 | if (BitstreamGetBit(bs)) // vol_control_parameters |
392 : | Isibaar | 1.1 | { |
393 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "+ vol_control_parameters"); |
394 : | edgomez | 1.14 | BitstreamSkip(bs, 2); // chroma_format |
395 : | dec->low_delay = BitstreamGetBit(bs); // low_delay | ||
396 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "low_delay %i", dec->low_delay); |
397 : | edgomez | 1.14 | if (BitstreamGetBit(bs)) // vbv_parameters |
398 : | Isibaar | 1.1 | { |
399 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER,"+ vbv_parameters"); |
400 : | edgomez | 1.14 | BitstreamSkip(bs, 15); // first_half_bitrate |
401 : | Isibaar | 1.1 | READ_MARKER(); |
402 : | edgomez | 1.14 | BitstreamSkip(bs, 15); // latter_half_bitrate |
403 : | Isibaar | 1.1 | READ_MARKER(); |
404 : | edgomez | 1.14 | BitstreamSkip(bs, 15); // first_half_vbv_buffer_size |
405 : | Isibaar | 1.1 | READ_MARKER(); |
406 : | edgomez | 1.14 | BitstreamSkip(bs, 3); // latter_half_vbv_buffer_size |
407 : | BitstreamSkip(bs, 11); // first_half_vbv_occupancy | ||
408 : | Isibaar | 1.1 | READ_MARKER(); |
409 : | edgomez | 1.14 | BitstreamSkip(bs, 15); // latter_half_vbv_occupancy |
410 : | Isibaar | 1.1 | READ_MARKER(); |
411 : | } | ||
412 : | } | ||
413 : | |||
414 : | dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape | ||
415 : | suxen_drol | 1.28.2.5 | |
416 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "shape %i", dec->shape); |
417 : | suxen_drol | 1.28.2.5 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
418 : | { | ||
419 : | DPRINTF(DPRINTF_ERROR,"non-rectangular shapes are not supported"); | ||
420 : | } | ||
421 : | edgomez | 1.14 | |
422 : | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { | ||
423 : | BitstreamSkip(bs, 4); // video_object_layer_shape_extension | ||
424 : | Isibaar | 1.1 | } |
425 : | |||
426 : | READ_MARKER(); | ||
427 : | |||
428 : | chenm001 | 1.9 | // *************************** for decode B-frame time *********************** |
429 : | suxen_drol | 1.28.2.5 | dec->time_inc_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution |
430 : | DPRINTF(DPRINTF_HEADER,"vop_time_increment_resolution %i", dec->time_inc_resolution); | ||
431 : | suxen_drol | 1.22 | |
432 : | suxen_drol | 1.28.2.5 | // dec->time_inc_resolution--; |
433 : | suxen_drol | 1.22 | |
434 : | suxen_drol | 1.28.2.5 | if (dec->time_inc_resolution > 0) { |
435 : | dec->time_inc_bits = log2bin(dec->time_inc_resolution-1); | ||
436 : | edgomez | 1.14 | } else { |
437 : | Isibaar | 1.1 | // dec->time_inc_bits = 0; |
438 : | // for "old" xvid compatibility, set time_inc_bits = 1 | ||
439 : | dec->time_inc_bits = 1; | ||
440 : | } | ||
441 : | |||
442 : | READ_MARKER(); | ||
443 : | |||
444 : | edgomez | 1.14 | if (BitstreamGetBit(bs)) // fixed_vop_rate |
445 : | Isibaar | 1.1 | { |
446 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "+ fixed_vop_rate"); |
447 : | Isibaar | 1.1 | BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment |
448 : | } | ||
449 : | |||
450 : | edgomez | 1.14 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
451 : | Isibaar | 1.1 | |
452 : | edgomez | 1.14 | if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { |
453 : | Isibaar | 1.1 | uint32_t width, height; |
454 : | |||
455 : | READ_MARKER(); | ||
456 : | edgomez | 1.14 | width = BitstreamGetBits(bs, 13); // video_object_layer_width |
457 : | Isibaar | 1.1 | READ_MARKER(); |
458 : | edgomez | 1.14 | height = BitstreamGetBits(bs, 13); // video_object_layer_height |
459 : | Isibaar | 1.1 | READ_MARKER(); |
460 : | |||
461 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "width %i", width); |
462 : | DPRINTF(DPRINTF_HEADER, "height %i", height); | ||
463 : | chenm001 | 1.23 | |
464 : | suxen_drol | 1.28.2.5 | if (dec->width != width || dec->height != height) |
465 : | { | ||
466 : | if (dec->fixed_dimensions) | ||
467 : | { | ||
468 : | DPRINTF(DPRINTF_ERROR, "XVID_DEC_PARAM width/height does not match bitstream"); | ||
469 : | return -1; | ||
470 : | } | ||
471 : | resize = 1; | ||
472 : | chenm001 | 1.23 | dec->width = width; |
473 : | dec->height = height; | ||
474 : | Isibaar | 1.1 | } |
475 : | } | ||
476 : | h | 1.4 | |
477 : | suxen_drol | 1.22 | dec->interlacing = BitstreamGetBit(bs); |
478 : | suxen_drol | 1.28.2.5 | DPRINTF(DPRINTF_HEADER, "interlacing %i", dec->interlacing); |
479 : | Isibaar | 1.1 | |
480 : | edgomez | 1.14 | if (!BitstreamGetBit(bs)) // obmc_disable |
481 : | Isibaar | 1.1 | { |
482 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_ERROR, "obmc_disabled==false not supported"); |
483 : | Isibaar | 1.1 | // TODO |
484 : | // fucking divx4.02 has this enabled | ||
485 : | } | ||
486 : | |||
487 : | suxen_drol | 1.28.2.5 | dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); // sprite_enable |
488 : | |||
489 : | if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC) | ||
490 : | Isibaar | 1.1 | { |
491 : | suxen_drol | 1.28.2.5 | int low_latency_sprite_enable; |
492 : | |||
493 : | if (dec->sprite_enable != SPRITE_GMC) | ||
494 : | { | ||
495 : | int sprite_width; | ||
496 : | int sprite_height; | ||
497 : | int sprite_left_coord; | ||
498 : | int sprite_top_coord; | ||
499 : | sprite_width = BitstreamGetBits(bs, 13); // sprite_width | ||
500 : | READ_MARKER(); | ||
501 : | sprite_height = BitstreamGetBits(bs, 13); // sprite_height | ||
502 : | READ_MARKER(); | ||
503 : | sprite_left_coord = BitstreamGetBits(bs, 13); // sprite_left_coordinate | ||
504 : | READ_MARKER(); | ||
505 : | sprite_top_coord = BitstreamGetBits(bs, 13); // sprite_top_coordinate | ||
506 : | READ_MARKER(); | ||
507 : | } | ||
508 : | dec->sprite_warping_points = BitstreamGetBits(bs, 6); // no_of_sprite_warping_points | ||
509 : | dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); // sprite_warping_accuracy | ||
510 : | dec->sprite_brightness_change = BitstreamGetBits(bs, 1); // brightness_change | ||
511 : | if (dec->sprite_enable != SPRITE_GMC) | ||
512 : | { | ||
513 : | low_latency_sprite_enable = BitstreamGetBits(bs, 1); // low_latency_sprite_enable | ||
514 : | } | ||
515 : | Isibaar | 1.1 | } |
516 : | edgomez | 1.14 | |
517 : | if (vol_ver_id != 1 && | ||
518 : | dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { | ||
519 : | BitstreamSkip(bs, 1); // sadct_disable | ||
520 : | Isibaar | 1.1 | } |
521 : | |||
522 : | edgomez | 1.14 | if (BitstreamGetBit(bs)) // not_8_bit |
523 : | Isibaar | 1.1 | { |
524 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "not_8_bit==true (ignored)"); |
525 : | Isibaar | 1.1 | dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision |
526 : | edgomez | 1.14 | BitstreamSkip(bs, 4); // bits_per_pixel |
527 : | } else { | ||
528 : | Isibaar | 1.1 | dec->quant_bits = 5; |
529 : | } | ||
530 : | |||
531 : | edgomez | 1.14 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
532 : | BitstreamSkip(bs, 1); // no_gray_quant_update | ||
533 : | BitstreamSkip(bs, 1); // composition_method | ||
534 : | BitstreamSkip(bs, 1); // linear_composition | ||
535 : | Isibaar | 1.1 | } |
536 : | |||
537 : | edgomez | 1.14 | dec->quant_type = BitstreamGetBit(bs); // quant_type |
538 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "quant_type %i", dec->quant_type); |
539 : | Isibaar | 1.1 | |
540 : | edgomez | 1.14 | if (dec->quant_type) { |
541 : | if (BitstreamGetBit(bs)) // load_intra_quant_mat | ||
542 : | Isibaar | 1.1 | { |
543 : | Isibaar | 1.3 | uint8_t matrix[64]; |
544 : | edgomez | 1.14 | |
545 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "load_intra_quant_mat"); |
546 : | |||
547 : | Isibaar | 1.2 | bs_get_matrix(bs, matrix); |
548 : | set_intra_matrix(matrix); | ||
549 : | edgomez | 1.14 | } else |
550 : | Isibaar | 1.3 | set_intra_matrix(get_default_intra_matrix()); |
551 : | Isibaar | 1.2 | |
552 : | edgomez | 1.14 | if (BitstreamGetBit(bs)) // load_inter_quant_mat |
553 : | Isibaar | 1.1 | { |
554 : | edgomez | 1.14 | uint8_t matrix[64]; |
555 : | suxen_drol | 1.22 | |
556 : | DPRINTF(DPRINTF_HEADER, "load_inter_quant_mat"); | ||
557 : | edgomez | 1.14 | |
558 : | Isibaar | 1.2 | bs_get_matrix(bs, matrix); |
559 : | set_inter_matrix(matrix); | ||
560 : | edgomez | 1.14 | } else |
561 : | Isibaar | 1.3 | set_inter_matrix(get_default_inter_matrix()); |
562 : | Isibaar | 1.1 | |
563 : | edgomez | 1.14 | if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
564 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_ERROR, "greyscale matrix not supported"); |
565 : | Isibaar | 1.1 | return -1; |
566 : | } | ||
567 : | Isibaar | 1.2 | |
568 : | Isibaar | 1.1 | } |
569 : | |||
570 : | edgomez | 1.14 | |
571 : | if (vol_ver_id != 1) { | ||
572 : | Isibaar | 1.26 | dec->quarterpel = BitstreamGetBit(bs); // quarter_sample |
573 : | suxen_drol | 1.28.2.5 | DPRINTF(DPRINTF_HEADER,"quarterpel %i", dec->quarterpel); |
574 : | Isibaar | 1.26 | } |
575 : | else | ||
576 : | Isibaar | 1.1 | dec->quarterpel = 0; |
577 : | Isibaar | 1.26 | |
578 : | Isibaar | 1.1 | |
579 : | edgomez | 1.14 | if (!BitstreamGetBit(bs)) // complexity_estimation_disable |
580 : | Isibaar | 1.1 | { |
581 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_ERROR, "complexity_estimation not supported"); |
582 : | Isibaar | 1.1 | return -1; |
583 : | } | ||
584 : | |||
585 : | suxen_drol | 1.22 | BitstreamSkip(bs, 1); // resync_marker_disable |
586 : | Isibaar | 1.1 | |
587 : | edgomez | 1.14 | if (BitstreamGetBit(bs)) // data_partitioned |
588 : | Isibaar | 1.1 | { |
589 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_ERROR, "data_partitioned not supported"); |
590 : | edgomez | 1.14 | BitstreamSkip(bs, 1); // reversible_vlc |
591 : | Isibaar | 1.1 | } |
592 : | |||
593 : | edgomez | 1.14 | if (vol_ver_id != 1) { |
594 : | suxen_drol | 1.28.2.5 | dec->newpred_enable = BitstreamGetBit(bs); |
595 : | if (dec->newpred_enable) // newpred_enable | ||
596 : | Isibaar | 1.1 | { |
597 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "+ newpred_enable"); |
598 : | edgomez | 1.14 | BitstreamSkip(bs, 2); // requested_upstream_message_type |
599 : | BitstreamSkip(bs, 1); // newpred_segment_type | ||
600 : | Isibaar | 1.1 | } |
601 : | suxen_drol | 1.28.2.5 | dec->reduced_resolution_enable = BitstreamGetBit(bs); |
602 : | if (dec->reduced_resolution_enable) // reduced_resolution_vop_enable | ||
603 : | Isibaar | 1.1 | { |
604 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_ERROR, "reduced_resolution_vop not supported"); |
605 : | suxen_drol | 1.28.2.5 | //return -1; |
606 : | Isibaar | 1.1 | } |
607 : | } | ||
608 : | suxen_drol | 1.28.2.5 | else |
609 : | { | ||
610 : | dec->newpred_enable = 0; | ||
611 : | dec->reduced_resolution_enable = 0; | ||
612 : | } | ||
613 : | edgomez | 1.14 | |
614 : | if ((dec->scalability = BitstreamGetBit(bs))) // scalability | ||
615 : | Isibaar | 1.1 | { |
616 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_ERROR, "scalability not supported"); |
617 : | Isibaar | 1.1 | return -1; |
618 : | } | ||
619 : | edgomez | 1.14 | } else // dec->shape == BINARY_ONLY |
620 : | Isibaar | 1.1 | { |
621 : | edgomez | 1.14 | if (vol_ver_id != 1) { |
622 : | Isibaar | 1.1 | if (BitstreamGetBit(bs)) // scalability |
623 : | { | ||
624 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_ERROR, "scalability not supported"); |
625 : | Isibaar | 1.1 | return -1; |
626 : | } | ||
627 : | } | ||
628 : | edgomez | 1.14 | BitstreamSkip(bs, 1); // resync_marker_disable |
629 : | Isibaar | 1.1 | |
630 : | } | ||
631 : | |||
632 : | suxen_drol | 1.28.2.5 | return (resize ? -3 : -2 ); /* VOL */ |
633 : | |||
634 : | edgomez | 1.14 | } else if (start_code == GRPOFVOP_START_CODE) { |
635 : | suxen_drol | 1.22 | |
636 : | DPRINTF(DPRINTF_STARTCODE, "<group_of_vop>"); | ||
637 : | |||
638 : | Isibaar | 1.1 | BitstreamSkip(bs, 32); |
639 : | { | ||
640 : | int hours, minutes, seconds; | ||
641 : | edgomez | 1.14 | |
642 : | Isibaar | 1.1 | hours = BitstreamGetBits(bs, 5); |
643 : | minutes = BitstreamGetBits(bs, 6); | ||
644 : | READ_MARKER(); | ||
645 : | seconds = BitstreamGetBits(bs, 6); | ||
646 : | suxen_drol | 1.22 | |
647 : | DPRINTF(DPRINTF_HEADER, "time %ih%im%is", hours); | ||
648 : | Isibaar | 1.1 | } |
649 : | edgomez | 1.14 | BitstreamSkip(bs, 1); // closed_gov |
650 : | BitstreamSkip(bs, 1); // broken_link | ||
651 : | suxen_drol | 1.22 | |
652 : | edgomez | 1.14 | } else if (start_code == VOP_START_CODE) { |
653 : | suxen_drol | 1.22 | |
654 : | DPRINTF(DPRINTF_STARTCODE, "<vop>"); | ||
655 : | |||
656 : | edgomez | 1.14 | BitstreamSkip(bs, 32); // vop_start_code |
657 : | Isibaar | 1.1 | |
658 : | edgomez | 1.14 | coding_type = BitstreamGetBits(bs, 2); // vop_coding_type |
659 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "coding_type %i", coding_type); |
660 : | Isibaar | 1.1 | |
661 : | chenm001 | 1.9 | // *************************** for decode B-frame time *********************** |
662 : | edgomez | 1.14 | while (BitstreamGetBit(bs) != 0) // time_base |
663 : | chenm001 | 1.9 | time_incr++; |
664 : | edgomez | 1.14 | |
665 : | Isibaar | 1.1 | READ_MARKER(); |
666 : | edgomez | 1.14 | |
667 : | if (dec->time_inc_bits) { | ||
668 : | chenm001 | 1.9 | time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); // vop_time_increment |
669 : | } | ||
670 : | suxen_drol | 1.19 | |
671 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "time_base %i", time_incr); |
672 : | DPRINTF(DPRINTF_HEADER, "time_increment %i", time_increment); | ||
673 : | |||
674 : | DPRINTF(DPRINTF_TIMECODE, "%c %i:%i", | ||
675 : | suxen_drol | 1.28.2.5 | coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S', |
676 : | suxen_drol | 1.19 | time_incr, time_increment); |
677 : | |||
678 : | edgomez | 1.14 | if (coding_type != B_VOP) { |
679 : | dec->last_time_base = dec->time_base; | ||
680 : | chenm001 | 1.9 | dec->time_base += time_incr; |
681 : | chl | 1.25 | dec->time = time_increment; |
682 : | |||
683 : | suxen_drol | 1.28.2.5 | /* dec->time_base * dec->time_inc_resolution + |
684 : | edgomez | 1.14 | time_increment; |
685 : | chl | 1.25 | */ dec->time_pp = (uint32_t) |
686 : | suxen_drol | 1.28.2.5 | (dec->time_inc_resolution + dec->time - dec->last_non_b_time)%dec->time_inc_resolution; |
687 : | edgomez | 1.14 | dec->last_non_b_time = dec->time; |
688 : | } else { | ||
689 : | chl | 1.25 | dec->time = time_increment; |
690 : | /* | ||
691 : | edgomez | 1.14 | (dec->last_time_base + |
692 : | suxen_drol | 1.28.2.5 | time_incr) * dec->time_inc_resolution + time_increment; |
693 : | chl | 1.25 | */ |
694 : | chl | 1.24 | dec->time_bp = (uint32_t) |
695 : | suxen_drol | 1.28.2.5 | (dec->time_inc_resolution + dec->last_non_b_time - dec->time)%dec->time_inc_resolution; |
696 : | Isibaar | 1.1 | } |
697 : | |||
698 : | READ_MARKER(); | ||
699 : | |||
700 : | edgomez | 1.14 | if (!BitstreamGetBit(bs)) // vop_coded |
701 : | Isibaar | 1.1 | { |
702 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "vop_coded==false"); |
703 : | Isibaar | 1.1 | return N_VOP; |
704 : | } | ||
705 : | |||
706 : | suxen_drol | 1.28.2.5 | if (dec->newpred_enable) |
707 : | { | ||
708 : | int vop_id; | ||
709 : | int vop_id_for_prediction; | ||
710 : | |||
711 : | vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
712 : | DPRINTF(DPRINTF_HEADER, "vop_id %i", vop_id); | ||
713 : | if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ | ||
714 : | { | ||
715 : | vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); | ||
716 : | DPRINTF(DPRINTF_HEADER, "vop_id_for_prediction %i", vop_id_for_prediction); | ||
717 : | } | ||
718 : | READ_MARKER(); | ||
719 : | } | ||
720 : | |||
721 : | |||
722 : | Isibaar | 1.1 | |
723 : | chenm001 | 1.9 | // fix a little bug by MinChen <chenm002@163.com> |
724 : | edgomez | 1.14 | if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
725 : | suxen_drol | 1.28.2.5 | ( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) { |
726 : | Isibaar | 1.1 | *rounding = BitstreamGetBit(bs); // rounding_type |
727 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "rounding %i", *rounding); |
728 : | Isibaar | 1.1 | } |
729 : | |||
730 : | suxen_drol | 1.28.2.5 | if (dec->reduced_resolution_enable && |
731 : | dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && | ||
732 : | (coding_type == P_VOP || coding_type == I_VOP)) { | ||
733 : | |||
734 : | *reduced_resolution = BitstreamGetBit(bs); | ||
735 : | } | ||
736 : | else | ||
737 : | { | ||
738 : | *reduced_resolution = 0; | ||
739 : | } | ||
740 : | Isibaar | 1.1 | |
741 : | edgomez | 1.14 | if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
742 : | suxen_drol | 1.28.2.5 | if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) { |
743 : | edgomez | 1.14 | |
744 : | suxen_drol | 1.28.2.5 | uint32_t width, height; |
745 : | uint32_t horiz_mc_ref, vert_mc_ref; | ||
746 : | Isibaar | 1.1 | |
747 : | suxen_drol | 1.28.2.5 | width = BitstreamGetBits(bs, 13); |
748 : | READ_MARKER(); | ||
749 : | height = BitstreamGetBits(bs, 13); | ||
750 : | READ_MARKER(); | ||
751 : | horiz_mc_ref = BitstreamGetBits(bs, 13); | ||
752 : | READ_MARKER(); | ||
753 : | vert_mc_ref = BitstreamGetBits(bs, 13); | ||
754 : | READ_MARKER(); | ||
755 : | |||
756 : | DPRINTF(DPRINTF_HEADER, "width %i", width); | ||
757 : | DPRINTF(DPRINTF_HEADER, "height %i", height); | ||
758 : | DPRINTF(DPRINTF_HEADER, "horiz_mc_ref %i", horiz_mc_ref); | ||
759 : | DPRINTF(DPRINTF_HEADER, "vert_mc_ref %i", vert_mc_ref); | ||
760 : | } | ||
761 : | Isibaar | 1.1 | |
762 : | edgomez | 1.14 | BitstreamSkip(bs, 1); // change_conv_ratio_disable |
763 : | if (BitstreamGetBit(bs)) // vop_constant_alpha | ||
764 : | Isibaar | 1.1 | { |
765 : | edgomez | 1.14 | BitstreamSkip(bs, 8); // vop_constant_alpha_value |
766 : | Isibaar | 1.1 | } |
767 : | } | ||
768 : | |||
769 : | edgomez | 1.14 | if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
770 : | Isibaar | 1.1 | // intra_dc_vlc_threshold |
771 : | edgomez | 1.14 | *intra_dc_threshold = |
772 : | intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; | ||
773 : | Isibaar | 1.1 | |
774 : | h | 1.28.2.1 | dec->top_field_first = 0; |
775 : | dec->alternate_vertical_scan = 0; | ||
776 : | |||
777 : | edgomez | 1.14 | if (dec->interlacing) { |
778 : | suxen_drol | 1.22 | dec->top_field_first = BitstreamGetBit(bs); |
779 : | DPRINTF(DPRINTF_HEADER, "interlace top_field_first %i", dec->top_field_first); | ||
780 : | dec->alternate_vertical_scan = BitstreamGetBit(bs); | ||
781 : | DPRINTF(DPRINTF_HEADER, "interlace alternate_vertical_scan %i", dec->alternate_vertical_scan); | ||
782 : | |||
783 : | h | 1.4 | } |
784 : | Isibaar | 1.1 | } |
785 : | edgomez | 1.14 | |
786 : | suxen_drol | 1.28.2.5 | if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) { |
787 : | |||
788 : | int i; | ||
789 : | |||
790 : | for (i = 0 ; i < dec->sprite_warping_points; i++) | ||
791 : | { | ||
792 : | int length; | ||
793 : | int x = 0, y = 0; | ||
794 : | |||
795 : | /* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */ | ||
796 : | length = bs_get_spritetrajectory(bs); | ||
797 : | if(length){ | ||
798 : | x= BitstreamGetBits(bs, length); | ||
799 : | if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
800 : | x = - (x ^ ((1 << length) - 1)); | ||
801 : | } | ||
802 : | READ_MARKER(); | ||
803 : | |||
804 : | length = bs_get_spritetrajectory(bs); | ||
805 : | if(length){ | ||
806 : | y = BitstreamGetBits(bs, length); | ||
807 : | if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/ | ||
808 : | y = - (y ^ ((1 << length) - 1)); | ||
809 : | } | ||
810 : | READ_MARKER(); | ||
811 : | |||
812 : | gmc_mv[i].x = x; | ||
813 : | gmc_mv[i].y = y; | ||
814 : | |||
815 : | DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i)", i, x, y); | ||
816 : | } | ||
817 : | |||
818 : | if (dec->sprite_brightness_change) | ||
819 : | { | ||
820 : | // XXX: brightness_change_factor() | ||
821 : | } | ||
822 : | if (dec->sprite_enable == SPRITE_STATIC) | ||
823 : | { | ||
824 : | // XXX: todo | ||
825 : | } | ||
826 : | |||
827 : | } | ||
828 : | |||
829 : | edgomez | 1.14 | if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) // vop_quant |
830 : | Isibaar | 1.10 | *quant = 1; |
831 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "quant %i", *quant); |
832 : | edgomez | 1.14 | |
833 : | if (coding_type != I_VOP) { | ||
834 : | *fcode_forward = BitstreamGetBits(bs, 3); // fcode_forward | ||
835 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "fcode_forward %i", *fcode_forward); |
836 : | Isibaar | 1.1 | } |
837 : | edgomez | 1.14 | |
838 : | if (coding_type == B_VOP) { | ||
839 : | *fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward | ||
840 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_HEADER, "fcode_backward %i", *fcode_backward); |
841 : | chenm001 | 1.9 | } |
842 : | edgomez | 1.14 | if (!dec->scalability) { |
843 : | if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && | ||
844 : | (coding_type != I_VOP)) { | ||
845 : | BitstreamSkip(bs, 1); // vop_shape_coding_type | ||
846 : | chenm001 | 1.9 | } |
847 : | Isibaar | 1.1 | } |
848 : | return coding_type; | ||
849 : | suxen_drol | 1.22 | |
850 : | edgomez | 1.14 | } else if (start_code == USERDATA_START_CODE) { |
851 : | Isibaar | 1.28.2.6 | char tmp[256]; |
852 : | int i; | ||
853 : | suxen_drol | 1.22 | |
854 : | edgomez | 1.14 | BitstreamSkip(bs, 32); // user_data_start_code |
855 : | suxen_drol | 1.22 | |
856 : | Isibaar | 1.28.2.6 | tmp[0] = BitstreamShowBits(bs, 8); |
857 : | |||
858 : | for(i = 1; i < 256; i++){ | ||
859 : | tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF); | ||
860 : | |||
861 : | if(tmp[i] == 0) | ||
862 : | break; | ||
863 : | |||
864 : | BitstreamSkip(bs, 8); | ||
865 : | } | ||
866 : | |||
867 : | DPRINTF(DPRINTF_STARTCODE, "<user_data>: %s\n", tmp); | ||
868 : | |||
869 : | if(strncmp(tmp, "DivX501b481p", 12) == 0) { | ||
870 : | dec->packed_mode = 1; | ||
871 : | DPRINTF(DPRINTF_STARTCODE, "packed_mode = %d\n", dec->packed_mode); | ||
872 : | |||
873 : | } | ||
874 : | edgomez | 1.14 | } else // start_code == ? |
875 : | Isibaar | 1.1 | { |
876 : | edgomez | 1.14 | if (BitstreamShowBits(bs, 24) == 0x000001) { |
877 : | suxen_drol | 1.22 | DPRINTF(DPRINTF_STARTCODE, "<unknown: %x>", BitstreamShowBits(bs, 32)); |
878 : | Isibaar | 1.1 | } |
879 : | BitstreamSkip(bs, 8); | ||
880 : | } | ||
881 : | } | ||
882 : | while ((BitstreamPos(bs) >> 3) < bs->length); | ||
883 : | |||
884 : | suxen_drol | 1.18 | //DPRINTF("*** WARNING: no vop_start_code found"); |
885 : | edgomez | 1.14 | return -1; /* ignore it */ |
886 : | Isibaar | 1.1 | } |
887 : | |||
888 : | |||
889 : | /* write custom quant matrix */ | ||
890 : | |||
891 : | edgomez | 1.14 | static void |
892 : | bs_put_matrix(Bitstream * bs, | ||
893 : | const int16_t * matrix) | ||
894 : | Isibaar | 1.1 | { |
895 : | int i, j; | ||
896 : | const int last = matrix[scan_tables[0][63]]; | ||
897 : | |||
898 : | suxen_drol | 1.18 | for (j = 63; j > 0 && matrix[scan_tables[0][j - 1]] == last; j--); |
899 : | Isibaar | 1.1 | |
900 : | edgomez | 1.14 | for (i = 0; i <= j; i++) { |
901 : | Isibaar | 1.1 | BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
902 : | } | ||
903 : | |||
904 : | edgomez | 1.14 | if (j < 63) { |
905 : | Isibaar | 1.1 | BitstreamPutBits(bs, 0, 8); |
906 : | } | ||
907 : | } | ||
908 : | |||
909 : | |||
910 : | /* | ||
911 : | write vol header | ||
912 : | */ | ||
913 : | edgomez | 1.14 | void |
914 : | BitstreamWriteVolHeader(Bitstream * const bs, | ||
915 : | const MBParam * pParam, | ||
916 : | chl | 1.28.2.4 | const FRAMEINFO * const frame) |
917 : | Isibaar | 1.1 | { |
918 : | chl | 1.28.2.4 | int vol_ver_id=1; |
919 : | |||
920 : | if ( (pParam->m_quarterpel) || (frame->global_flags & XVID_GMC) ) | ||
921 : | vol_ver_id = 2; | ||
922 : | |||
923 : | Isibaar | 1.1 | // video object_start_code & vo_id |
924 : | edgomez | 1.14 | BitstreamPad(bs); |
925 : | Isibaar | 1.1 | BitstreamPutBits(bs, VO_START_CODE, 27); |
926 : | edgomez | 1.14 | BitstreamPutBits(bs, 0, 5); |
927 : | Isibaar | 1.1 | |
928 : | // video_object_layer_start_code & vol_id | ||
929 : | BitstreamPutBits(bs, VOL_START_CODE, 28); | ||
930 : | BitstreamPutBits(bs, 0, 4); | ||
931 : | |||
932 : | edgomez | 1.14 | BitstreamPutBit(bs, 0); // random_accessible_vol |
933 : | BitstreamPutBits(bs, 0, 8); // video_object_type_indication | ||
934 : | Isibaar | 1.28.2.3 | |
935 : | chl | 1.28.2.4 | if (vol_ver_id == 1) |
936 : | Isibaar | 1.28.2.3 | { |
937 : | BitstreamPutBit(bs, 0); // is_object_layer_identified (0=not given) | ||
938 : | } | ||
939 : | else | ||
940 : | { | ||
941 : | BitstreamPutBit(bs, 1); // is_object_layer_identified | ||
942 : | chl | 1.28.2.4 | BitstreamPutBits(bs, vol_ver_id, 4); // vol_ver_id == 2 |
943 : | BitstreamPutBits(bs, 4, 3); // vol_ver_priority (1==lowest, 7==highest) ?? | ||
944 : | Isibaar | 1.28.2.3 | } |
945 : | |||
946 : | edgomez | 1.14 | BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1) |
947 : | suxen_drol | 1.12 | |
948 : | chl | 1.28 | BitstreamPutBit(bs, 1); // vol_control_parameters |
949 : | BitstreamPutBits(bs, 1, 2); // chroma_format 1="4:2:0" | ||
950 : | |||
951 : | edgomez | 1.14 | if (pParam->max_bframes > 0) { |
952 : | BitstreamPutBit(bs, 0); // low_delay | ||
953 : | } else | ||
954 : | suxen_drol | 1.12 | { |
955 : | chl | 1.27 | BitstreamPutBit(bs, 1); // low_delay |
956 : | suxen_drol | 1.12 | } |
957 : | chl | 1.28 | BitstreamPutBit(bs, 0); // vbv_parameters (0=not given) |
958 : | suxen_drol | 1.12 | |
959 : | edgomez | 1.14 | BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) |
960 : | Isibaar | 1.1 | |
961 : | WRITE_MARKER(); | ||
962 : | edgomez | 1.14 | |
963 : | suxen_drol | 1.28.2.5 | /* time_inc_resolution; ignored by current decore versions |
964 : | edgomez | 1.14 | eg. 2fps res=2 inc=1 |
965 : | 25fps res=25 inc=1 | ||
966 : | 29.97fps res=30000 inc=1001 | ||
967 : | */ | ||
968 : | chl | 1.28 | BitstreamPutBits(bs, pParam->fbase, 16); |
969 : | Isibaar | 1.1 | |
970 : | WRITE_MARKER(); | ||
971 : | |||
972 : | suxen_drol | 1.20 | BitstreamPutBit(bs, 1); // fixed_vop_rate = 1 |
973 : | BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); // fixed_vop_time_increment | ||
974 : | Isibaar | 1.1 | |
975 : | WRITE_MARKER(); | ||
976 : | edgomez | 1.14 | BitstreamPutBits(bs, pParam->width, 13); // width |
977 : | Isibaar | 1.1 | WRITE_MARKER(); |
978 : | edgomez | 1.14 | BitstreamPutBits(bs, pParam->height, 13); // height |
979 : | Isibaar | 1.1 | WRITE_MARKER(); |
980 : | edgomez | 1.14 | |
981 : | BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); // interlace | ||
982 : | Isibaar | 1.1 | BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) |
983 : | Isibaar | 1.28.2.3 | |
984 : | chl | 1.28.2.4 | if (vol_ver_id != 1) |
985 : | { if (frame->global_flags & XVID_GMC) | ||
986 : | { BitstreamPutBits(bs, 2, 2); // sprite_enable=='GMC' | ||
987 : | BitstreamPutBits(bs, 2, 6); // no_of_sprite_warping_points | ||
988 : | BitstreamPutBits(bs, 3, 2); // sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 | ||
989 : | BitstreamPutBit(bs, 0); // sprite_brightness_change (not supported) | ||
990 : | |||
991 : | /* currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3 | ||
992 : | for DivX5 compatability */ | ||
993 : | |||
994 : | } else | ||
995 : | BitstreamPutBits(bs, 0, 2); // sprite_enable==off | ||
996 : | Isibaar | 1.28.2.3 | } |
997 : | else | ||
998 : | chl | 1.28.2.4 | BitstreamPutBit(bs, 0); // sprite_enable==off |
999 : | Isibaar | 1.28.2.3 | |
1000 : | chl | 1.28.2.4 | BitstreamPutBit(bs, 0); // not_8_bit |
1001 : | Isibaar | 1.1 | |
1002 : | // quant_type 0=h.263 1=mpeg4(quantizer tables) | ||
1003 : | suxen_drol | 1.7 | BitstreamPutBit(bs, pParam->m_quant_type); |
1004 : | edgomez | 1.14 | |
1005 : | if (pParam->m_quant_type) { | ||
1006 : | Isibaar | 1.2 | BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
1007 : | edgomez | 1.14 | if (get_intra_matrix_status()) { |
1008 : | Isibaar | 1.2 | bs_put_matrix(bs, get_intra_matrix()); |
1009 : | Isibaar | 1.1 | } |
1010 : | |||
1011 : | edgomez | 1.14 | BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat |
1012 : | if (get_inter_matrix_status()) { | ||
1013 : | Isibaar | 1.2 | bs_put_matrix(bs, get_inter_matrix()); |
1014 : | Isibaar | 1.1 | } |
1015 : | |||
1016 : | } | ||
1017 : | |||
1018 : | chl | 1.28.2.4 | if (vol_ver_id != 1) { |
1019 : | if (pParam->m_quarterpel) | ||
1020 : | BitstreamPutBit(bs, 1); // quarterpel | ||
1021 : | else | ||
1022 : | BitstreamPutBit(bs, 0); // no quarterpel | ||
1023 : | Isibaar | 1.28.2.3 | } |
1024 : | |||
1025 : | Isibaar | 1.1 | BitstreamPutBit(bs, 1); // complexity_estimation_disable |
1026 : | BitstreamPutBit(bs, 1); // resync_marker_disable | ||
1027 : | BitstreamPutBit(bs, 0); // data_partitioned | ||
1028 : | Isibaar | 1.28.2.3 | |
1029 : | chl | 1.28.2.4 | if (vol_ver_id != 1) |
1030 : | Isibaar | 1.28.2.3 | { |
1031 : | BitstreamPutBit(bs, 0); // newpred_enable | ||
1032 : | BitstreamPutBit(bs, 0); // reduced_resolution_vop_enabled | ||
1033 : | } | ||
1034 : | chl | 1.28.2.4 | |
1035 : | Isibaar | 1.1 | BitstreamPutBit(bs, 0); // scalability |
1036 : | chl | 1.28.2.4 | |
1037 : | Isibaar | 1.1 | } |
1038 : | |||
1039 : | |||
1040 : | /* | ||
1041 : | write vop header | ||
1042 : | */ | ||
1043 : | edgomez | 1.14 | void |
1044 : | BitstreamWriteVopHeader(Bitstream * const bs, | ||
1045 : | const MBParam * pParam, | ||
1046 : | chl | 1.28.2.4 | const FRAMEINFO * const frame, |
1047 : | suxen_drol | 1.17 | int vop_coded) |
1048 : | Isibaar | 1.1 | { |
1049 : | suxen_drol | 1.8 | uint32_t i; |
1050 : | chl | 1.28 | |
1051 : | edgomez | 1.14 | BitstreamPad(bs); |
1052 : | BitstreamPutBits(bs, VOP_START_CODE, 32); | ||
1053 : | |||
1054 : | BitstreamPutBits(bs, frame->coding_type, 2); | ||
1055 : | suxen_drol | 1.28.2.5 | DPRINTF(DPRINTF_HEADER, "coding_type = %i", frame->coding_type); |
1056 : | Isibaar | 1.1 | |
1057 : | edgomez | 1.14 | for (i = 0; i < frame->seconds; i++) { |
1058 : | suxen_drol | 1.8 | BitstreamPutBit(bs, 1); |
1059 : | } | ||
1060 : | BitstreamPutBit(bs, 0); | ||
1061 : | Isibaar | 1.1 | |
1062 : | WRITE_MARKER(); | ||
1063 : | |||
1064 : | // time_increment: value=nth_of_sec, nbits = log2(resolution) | ||
1065 : | chl | 1.28.2.4 | |
1066 : | edgomez | 1.14 | BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
1067 : | suxen_drol | 1.28.2.5 | /*DPRINTF("[%i:%i] %c", frame->seconds, frame->ticks, |
1068 : | edgomez | 1.14 | frame->coding_type == I_VOP ? 'I' : frame->coding_type == |
1069 : | suxen_drol | 1.22 | P_VOP ? 'P' : 'B');*/ |
1070 : | Isibaar | 1.1 | |
1071 : | WRITE_MARKER(); | ||
1072 : | |||
1073 : | suxen_drol | 1.17 | if (!vop_coded) { |
1074 : | BitstreamPutBits(bs, 0, 1); | ||
1075 : | return; | ||
1076 : | } | ||
1077 : | |||
1078 : | edgomez | 1.14 | BitstreamPutBits(bs, 1, 1); // vop_coded |
1079 : | Isibaar | 1.1 | |
1080 : | chl | 1.28.2.4 | if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
1081 : | suxen_drol | 1.7 | BitstreamPutBits(bs, frame->rounding_type, 1); |
1082 : | Isibaar | 1.1 | |
1083 : | edgomez | 1.14 | BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
1084 : | |||
1085 : | if (frame->global_flags & XVID_INTERLACING) { | ||
1086 : | h | 1.28.2.1 | BitstreamPutBit(bs, (frame->global_flags & XVID_TOPFIELDFIRST)); |
1087 : | BitstreamPutBit(bs, (frame->global_flags & XVID_ALTERNATESCAN)); | ||
1088 : | h | 1.4 | } |
1089 : | chl | 1.28.2.4 | |
1090 : | if (frame->coding_type == S_VOP) { | ||
1091 : | if (1) { // no_of_sprite_warping_points>=1 | ||
1092 : | if (pParam->m_quarterpel) | ||
1093 : | bs_put_spritetrajectory(bs, frame->GMC_MV.x/2 ); // du[0] | ||
1094 : | else | ||
1095 : | bs_put_spritetrajectory(bs, frame->GMC_MV.x ); // du[0] | ||
1096 : | WRITE_MARKER(); | ||
1097 : | |||
1098 : | if (pParam->m_quarterpel) | ||
1099 : | bs_put_spritetrajectory(bs, frame->GMC_MV.y/2 ); // dv[0] | ||
1100 : | else | ||
1101 : | bs_put_spritetrajectory(bs, frame->GMC_MV.y ); // dv[0] | ||
1102 : | WRITE_MARKER(); | ||
1103 : | suxen_drol | 1.28.2.5 | |
1104 : | |||
1105 : | if (pParam->m_quarterpel) | ||
1106 : | { | ||
1107 : | DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i) *QPEL*", 0, frame->GMC_MV.x/2, frame->GMC_MV.y/2); | ||
1108 : | } | ||
1109 : | else | ||
1110 : | { | ||
1111 : | DPRINTF(DPRINTF_HEADER,"sprite_warping_point[%i] xy=(%i,%i)", 0, frame->GMC_MV.x, frame->GMC_MV.y); | ||
1112 : | } | ||
1113 : | |||
1114 : | chl | 1.28.2.4 | } |
1115 : | /* GMC is halfpel in bitstream, even though GMC_MV was pseudo-qpel (2*halfpel) */ | ||
1116 : | h | 1.4 | |
1117 : | chl | 1.28.2.4 | if (2) { // no_of_sprite_warping_points>=2 (for DivX5 compat) |
1118 : | bs_put_spritetrajectory(bs, 0 ); | ||
1119 : | WRITE_MARKER(); | ||
1120 : | bs_put_spritetrajectory(bs, 0 ); | ||
1121 : | WRITE_MARKER(); | ||
1122 : | } | ||
1123 : | // no support for brightness_change! | ||
1124 : | } | ||
1125 : | |||
1126 : | edgomez | 1.14 | BitstreamPutBits(bs, frame->quant, 5); // quantizer |
1127 : | |||
1128 : | suxen_drol | 1.7 | if (frame->coding_type != I_VOP) |
1129 : | edgomez | 1.14 | BitstreamPutBits(bs, frame->fcode, 3); // forward_fixed_code |
1130 : | suxen_drol | 1.8 | |
1131 : | if (frame->coding_type == B_VOP) | ||
1132 : | edgomez | 1.14 | BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code |
1133 : | suxen_drol | 1.8 | |
1134 : | Isibaar | 1.1 | } |
1135 : | suxen_drol | 1.17 | |
1136 : | void | ||
1137 : | BitstreamWriteUserData(Bitstream * const bs, | ||
1138 : | uint8_t * data, | ||
1139 : | const int length) | ||
1140 : | { | ||
1141 : | int i; | ||
1142 : | |||
1143 : | BitstreamPad(bs); | ||
1144 : | BitstreamPutBits(bs, USERDATA_START_CODE, 32); | ||
1145 : | |||
1146 : | for (i = 0; i < length; i++) { | ||
1147 : | BitstreamPutBits(bs, data[i], 8); | ||
1148 : | } | ||
1149 : | |||
1150 : | chl | 1.24 | } |
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