1 |
/****************************************************************************** |
/***************************************************************************** |
2 |
* * |
* |
3 |
* This file is part of XviD, a free MPEG-4 video encoder/decoder * |
* XVID MPEG-4 VIDEO CODEC |
4 |
* * |
* - Bitstream reader/writer functions - |
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 * |
* Copyright (C) 2001-2002 - Peter Ross <pross@xvid.org> |
7 |
* software module in hardware or software products are advised that its * |
* |
8 |
* use may infringe existing patents or copyrights, and any such use * |
* This file is part of XviD, a free MPEG-4 video encoder/decoder |
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 * |
* XviD is free software; you can redistribute it and/or modify it |
11 |
* companies, will have no liability for use of this software or * |
* under the terms of the GNU General Public License as published by |
12 |
* modifications or derivatives thereof. * |
* the Free Software Foundation; either version 2 of the License, or |
13 |
* * |
* (at your option) any later version. |
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 * |
* This program is distributed in the hope that it will be useful, |
16 |
* the Free Software Foundation; either version 2 of the License, or * |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 |
* (at your option) any later version. * |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
18 |
* * |
* GNU General Public License for more details. |
19 |
* XviD is distributed in the hope that it will be useful, but * |
* |
20 |
* WITHOUT ANY WARRANTY; without even the implied warranty of * |
* You should have received a copy of the GNU General Public License |
21 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
* along with this program; if not, write to the Free Software |
22 |
* GNU General Public License for more details. * |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
23 |
* * |
* |
24 |
* You should have received a copy of the GNU General Public License * |
* Under section 8 of the GNU General Public License, the copyright |
25 |
* along with this program; if not, write to the Free Software * |
* holders of XVID explicitly forbid distribution in the following |
26 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * |
* countries: |
27 |
* * |
* |
28 |
******************************************************************************/ |
* - Japan |
29 |
|
* - United States of America |
30 |
/****************************************************************************** |
* |
31 |
* * |
* Linking XviD statically or dynamically with other modules is making a |
32 |
* bitstream.c * |
* combined work based on XviD. Thus, the terms and conditions of the |
33 |
* * |
* GNU General Public License cover the whole combination. |
34 |
* Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> * |
* |
35 |
* * |
* As a special exception, the copyright holders of XviD give you |
36 |
* For more information visit the XviD homepage: http://www.xvid.org * |
* permission to link XviD with independent modules that communicate with |
37 |
* * |
* XviD solely through the VFW1.1 and DShow interfaces, regardless of the |
38 |
******************************************************************************/ |
* license terms of these independent modules, and to copy and distribute |
39 |
|
* the resulting combined work under terms of your choice, provided that |
40 |
/****************************************************************************** |
* every copy of the combined work is accompanied by a complete copy of |
41 |
* * |
* the source code of XviD (the version of XviD used to produce the |
42 |
* Revision history: * |
* combined work), being distributed under the terms of the GNU General |
43 |
* * |
* Public License plus this exception. An independent module is a module |
44 |
* 06.05.2002 fixed fincr/fbase error * |
* which is not derived from or based on XviD. |
45 |
* 01.05.2002 added BVOP support to BitstreamWriteVopHeader * |
* |
46 |
* 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> * |
* Note that people who make modified versions of XviD are not obligated |
47 |
* 26.03.2002 interlacing support * |
* to grant this special exception for their modified versions; it is |
48 |
* 03.03.2002 qmatrix writing * |
* their choice whether to do so. The GNU General Public License gives |
49 |
* 03.03.2002 merged BITREADER and BITWRITER * |
* permission to release a modified version without this exception; this |
50 |
* 30.02.2002 intra_dc_threshold support * |
* exception also makes it possible to release a modified version which |
51 |
* 04.12.2001 support for additional headers * |
* carries forward this exception. |
52 |
* 16.12.2001 inital version * |
* |
53 |
* * |
* $Id: bitstream.c,v 1.37 2002-12-15 01:21:12 edgomez Exp $ |
54 |
******************************************************************************/ |
* |
55 |
|
****************************************************************************/ |
56 |
|
|
57 |
#include "bitstream.h" |
#include "bitstream.h" |
58 |
#include "zigzag.h" |
#include "zigzag.h" |
59 |
#include "../quant/quant_matrix.h" |
#include "../quant/quant_matrix.h" |
60 |
|
|
61 |
|
/***************************************************************************** |
62 |
|
* Functions |
63 |
|
****************************************************************************/ |
64 |
|
|
65 |
static uint32_t __inline log2bin(uint32_t value) |
static uint32_t __inline |
66 |
|
log2bin(uint32_t value) |
67 |
{ |
{ |
68 |
/* Changed by Chenm001 */ |
/* Changed by Chenm001 */ |
69 |
#ifndef WIN32 |
#if !defined(_MSC_VER) |
70 |
int n = 0; |
int n = 0; |
71 |
while (value) |
|
72 |
{ |
while (value) { |
73 |
value >>= 1; |
value >>= 1; |
74 |
n++; |
n++; |
75 |
} |
} |
83 |
} |
} |
84 |
|
|
85 |
|
|
86 |
static const uint32_t intra_dc_threshold_table[] = |
static const uint32_t intra_dc_threshold_table[] = { |
|
{ |
|
87 |
32, /* never use */ |
32, /* never use */ |
88 |
13, |
13, |
89 |
15, |
15, |
95 |
}; |
}; |
96 |
|
|
97 |
|
|
98 |
void bs_get_matrix(Bitstream * bs, uint8_t * matrix) |
void |
99 |
|
bs_get_matrix(Bitstream * bs, |
100 |
|
uint8_t * matrix) |
101 |
{ |
{ |
102 |
int i = 0; |
int i = 0; |
103 |
int last, value = 0; |
int last, value = 0; |
104 |
|
|
105 |
do |
do { |
|
{ |
|
106 |
last = value; |
last = value; |
107 |
value = BitstreamGetBits(bs, 8); |
value = BitstreamGetBits(bs, 8); |
108 |
matrix[ scan_tables[0][i++] ] = value; |
matrix[ scan_tables[0][i++] ] = value; |
109 |
} |
} |
110 |
while (value != 0 && i < 64); |
while (value != 0 && i < 64); |
111 |
|
i--; /* fix little bug at coeff not full */ |
112 |
|
|
113 |
while (i < 64) |
while (i < 64) { |
|
{ |
|
114 |
matrix[ scan_tables[0][i++] ] = last; |
matrix[ scan_tables[0][i++] ] = last; |
115 |
} |
} |
116 |
} |
} |
117 |
|
|
118 |
|
|
119 |
|
|
120 |
|
/* for PVOP addbits == fcode - 1 */ |
121 |
|
/* for BVOP addbits == max(fcode,bcode) - 1 */ |
122 |
|
/* returns mbpos */ |
123 |
|
int |
124 |
|
read_video_packet_header(Bitstream *bs, const int addbits, int * quant) |
125 |
|
{ |
126 |
|
int nbits; |
127 |
|
int mbnum; |
128 |
|
int hec; |
129 |
|
|
130 |
|
nbits = NUMBITS_VP_RESYNC_MARKER + addbits; |
131 |
|
|
132 |
|
BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); |
133 |
|
BitstreamSkip(bs, nbits); |
134 |
|
|
135 |
|
DPRINTF(DPRINTF_STARTCODE, "<video_packet_header>"); |
136 |
|
|
137 |
|
/* if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { */ |
138 |
|
/* hec */ |
139 |
|
/* vop_width */ |
140 |
|
/* marker_bit */ |
141 |
|
/* vop_height */ |
142 |
|
/* marker_bit */ |
143 |
|
|
144 |
|
/*} */ |
145 |
|
|
146 |
|
mbnum = BitstreamGetBits(bs, 9); |
147 |
|
DPRINTF(DPRINTF_HEADER, "mbnum %i", mbnum); |
148 |
|
|
149 |
|
/* if (dec->shape != VIDOBJLAY_SHAPE_BINARYONLY) */ |
150 |
|
*quant = BitstreamGetBits(bs, 5); |
151 |
|
DPRINTF(DPRINTF_HEADER, "quant %i", *quant); |
152 |
|
|
153 |
|
/* if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) */ |
154 |
|
hec = BitstreamGetBit(bs); |
155 |
|
DPRINTF(DPRINTF_HEADER, "header_extension_code %i", hec); |
156 |
|
/* if (hec) */ |
157 |
|
/* .. decoder hec-header ... */ |
158 |
|
|
159 |
|
return mbnum; |
160 |
|
} |
161 |
|
|
162 |
|
|
163 |
|
|
164 |
/* |
/* |
165 |
decode headers |
decode headers |
166 |
returns coding_type, or -1 if error |
returns coding_type, or -1 if error |
167 |
*/ |
*/ |
168 |
|
|
169 |
int BitstreamReadHeaders(Bitstream * bs, DECODER * dec, uint32_t * rounding, uint32_t * quant, uint32_t * fcode_forward, uint32_t * fcode_backward, uint32_t * intra_dc_threshold) |
#define VIDOBJ_START_CODE_MASK 0x0000001f |
170 |
|
#define VIDOBJLAY_START_CODE_MASK 0x0000000f |
171 |
|
|
172 |
|
int |
173 |
|
BitstreamReadHeaders(Bitstream * bs, |
174 |
|
DECODER * dec, |
175 |
|
uint32_t * rounding, |
176 |
|
uint32_t * quant, |
177 |
|
uint32_t * fcode_forward, |
178 |
|
uint32_t * fcode_backward, |
179 |
|
uint32_t * intra_dc_threshold) |
180 |
{ |
{ |
181 |
uint32_t vol_ver_id; |
uint32_t vol_ver_id; |
182 |
static uint32_t time_increment_resolution; |
static uint32_t time_increment_resolution; |
183 |
uint32_t coding_type; |
uint32_t coding_type; |
184 |
uint32_t start_code; |
uint32_t start_code; |
185 |
uint32_t time_incr=0; |
uint32_t time_incr=0; |
186 |
int32_t time_increment; |
int32_t time_increment = 0; |
187 |
|
|
188 |
do |
do { |
|
{ |
|
189 |
BitstreamByteAlign(bs); |
BitstreamByteAlign(bs); |
190 |
start_code = BitstreamShowBits(bs, 32); |
start_code = BitstreamShowBits(bs, 32); |
191 |
|
|
192 |
if (start_code == VISOBJSEQ_START_CODE) |
if (start_code == VISOBJSEQ_START_CODE) { |
193 |
{ |
|
194 |
// DEBUG("visual_object_sequence"); |
int profile; |
195 |
BitstreamSkip(bs, 32); // visual_object_sequence_start_code |
|
196 |
BitstreamSkip(bs, 8); // profile_and_level_indication |
DPRINTF(DPRINTF_STARTCODE, "<visual_object_sequence>"); |
197 |
} |
|
198 |
else if (start_code == VISOBJSEQ_STOP_CODE) |
BitstreamSkip(bs, 32); /* visual_object_sequence_start_code */ |
199 |
{ |
profile = BitstreamGetBits(bs, 8); /* profile_and_level_indication */ |
200 |
BitstreamSkip(bs, 32); // visual_object_sequence_stop_code |
|
201 |
} |
DPRINTF(DPRINTF_HEADER, "profile_and_level_indication %i", profile); |
202 |
else if (start_code == VISOBJ_START_CODE) |
|
203 |
{ |
} else if (start_code == VISOBJSEQ_STOP_CODE) { |
204 |
// DEBUG("visual_object"); |
|
205 |
BitstreamSkip(bs,32); // visual_object_start_code |
BitstreamSkip(bs, 32); /* visual_object_sequence_stop_code */ |
206 |
if (BitstreamGetBit(bs)) // is_visual_object_identified |
|
207 |
{ |
DPRINTF(DPRINTF_STARTCODE, "</visual_object_sequence>"); |
208 |
vol_ver_id = BitstreamGetBits(bs,4); // visual_object_ver_id |
|
209 |
BitstreamSkip(bs, 3); // visual_object_priority |
} else if (start_code == VISOBJ_START_CODE) { |
210 |
} |
|
211 |
else |
DPRINTF(DPRINTF_STARTCODE, "<visual_object>"); |
212 |
|
|
213 |
|
BitstreamSkip(bs, 32); /* visual_object_start_code */ |
214 |
|
if (BitstreamGetBit(bs)) /* is_visual_object_identified */ |
215 |
{ |
{ |
216 |
|
vol_ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
217 |
|
DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); |
218 |
|
BitstreamSkip(bs, 3); /* visual_object_priority */ |
219 |
|
} else { |
220 |
vol_ver_id = 1; |
vol_ver_id = 1; |
221 |
} |
} |
222 |
|
|
223 |
if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) // visual_object_type |
if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
224 |
{ |
{ |
225 |
DEBUG("visual_object_type != video"); |
DPRINTF(DPRINTF_ERROR, "visual_object_type != video"); |
226 |
return -1; |
return -1; |
227 |
} |
} |
228 |
BitstreamSkip(bs, 4); |
BitstreamSkip(bs, 4); |
229 |
|
|
230 |
// video_signal_type |
/* video_signal_type */ |
231 |
|
|
232 |
if (BitstreamGetBit(bs)) // video_signal_type |
if (BitstreamGetBit(bs)) /* video_signal_type */ |
233 |
{ |
{ |
234 |
DEBUG("+ video_signal_type"); |
DPRINTF(DPRINTF_HEADER,"+ video_signal_type"); |
235 |
BitstreamSkip(bs, 3); // video_format |
BitstreamSkip(bs, 3); /* video_format */ |
236 |
BitstreamSkip(bs, 1); // video_range |
BitstreamSkip(bs, 1); /* video_range */ |
237 |
if (BitstreamGetBit(bs)) // color_description |
if (BitstreamGetBit(bs)) /* color_description */ |
238 |
{ |
{ |
239 |
DEBUG("+ color_description"); |
DPRINTF(DPRINTF_HEADER,"+ color_description"); |
240 |
BitstreamSkip(bs, 8); // color_primaries |
BitstreamSkip(bs, 8); /* color_primaries */ |
241 |
BitstreamSkip(bs, 8); // transfer_characteristics |
BitstreamSkip(bs, 8); /* transfer_characteristics */ |
242 |
BitstreamSkip(bs, 8); // matrix_coefficients |
BitstreamSkip(bs, 8); /* matrix_coefficients */ |
|
} |
|
243 |
} |
} |
244 |
} |
} |
245 |
else if ((start_code & ~0x1f) == VIDOBJ_START_CODE) |
} else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
246 |
{ |
|
247 |
BitstreamSkip(bs, 32); // video_object_start_code |
DPRINTF(DPRINTF_STARTCODE, "<video_object>"); |
248 |
} |
DPRINTF(DPRINTF_HEADER, "vo id %i", start_code & VIDOBJ_START_CODE_MASK); |
|
else if ((start_code & ~0xf) == VIDOBJLAY_START_CODE) |
|
|
{ |
|
|
// DEBUG("video_object_layer"); |
|
|
BitstreamSkip(bs, 32); // video_object_layer_start_code |
|
249 |
|
|
250 |
BitstreamSkip(bs, 1); // random_accessible_vol |
BitstreamSkip(bs, 32); /* video_object_start_code */ |
251 |
|
|
252 |
// video_object_type_indication |
} else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { |
253 |
if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && |
|
254 |
BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && |
DPRINTF(DPRINTF_STARTCODE, "<video_object_layer>"); |
255 |
BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && |
DPRINTF(DPRINTF_HEADER, "vol id %i", start_code & VIDOBJLAY_START_CODE_MASK); |
256 |
BitstreamShowBits(bs, 8) != 0) // BUGGY DIVX |
|
257 |
|
BitstreamSkip(bs, 32); /* video_object_layer_start_code */ |
258 |
|
|
259 |
|
BitstreamSkip(bs, 1); /* random_accessible_vol */ |
260 |
|
|
261 |
|
/* video_object_type_indication */ |
262 |
|
if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && BitstreamShowBits(bs, 8) != 0) /* BUGGY DIVX */ |
263 |
{ |
{ |
264 |
DEBUG1("video_object_type_indication not supported", BitstreamShowBits(bs, 8)); |
DPRINTF(DPRINTF_ERROR,"video_object_type_indication %i not supported ", |
265 |
|
BitstreamShowBits(bs, 8)); |
266 |
return -1; |
return -1; |
267 |
} |
} |
268 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 8); |
269 |
|
|
270 |
|
|
271 |
if (BitstreamGetBit(bs)) // is_object_layer_identifier |
if (BitstreamGetBit(bs)) /* is_object_layer_identifier */ |
|
{ |
|
|
DEBUG("+ is_object_layer_identifier"); |
|
|
vol_ver_id = BitstreamGetBits(bs,4); // video_object_layer_verid |
|
|
BitstreamSkip(bs, 3); // video_object_layer_priority |
|
|
} |
|
|
else |
|
272 |
{ |
{ |
273 |
|
DPRINTF(DPRINTF_HEADER, "+ is_object_layer_identifier"); |
274 |
|
vol_ver_id = BitstreamGetBits(bs, 4); /* video_object_layer_verid */ |
275 |
|
DPRINTF(DPRINTF_HEADER,"ver_id %i", vol_ver_id); |
276 |
|
BitstreamSkip(bs, 3); /* video_object_layer_priority */ |
277 |
|
} else { |
278 |
vol_ver_id = 1; |
vol_ver_id = 1; |
279 |
} |
} |
|
//DEBUGI("vol_ver_id", vol_ver_id); |
|
280 |
|
|
281 |
if (BitstreamGetBits(bs, 4) == VIDOBJLAY_AR_EXTPAR) // aspect_ratio_info |
if (BitstreamGetBits(bs, 4) == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */ |
282 |
{ |
{ |
283 |
DEBUG("+ aspect_ratio_info"); |
DPRINTF(DPRINTF_HEADER, "+ aspect_ratio_info"); |
284 |
BitstreamSkip(bs, 8); // par_width |
BitstreamSkip(bs, 8); /* par_width */ |
285 |
BitstreamSkip(bs, 8); // par_height |
BitstreamSkip(bs, 8); /* par_height */ |
286 |
} |
} |
287 |
|
|
288 |
if (BitstreamGetBit(bs)) // vol_control_parameters |
if (BitstreamGetBit(bs)) /* vol_control_parameters */ |
289 |
{ |
{ |
290 |
DEBUG("+ vol_control_parameters"); |
DPRINTF(DPRINTF_HEADER, "+ vol_control_parameters"); |
291 |
BitstreamSkip(bs, 2); // chroma_format |
BitstreamSkip(bs, 2); /* chroma_format */ |
292 |
BitstreamSkip(bs, 1); // low_delay |
dec->low_delay = (uint8_t)BitstreamGetBit(bs); /* low_delay */ |
293 |
if (BitstreamGetBit(bs)) // vbv_parameters |
DPRINTF(DPRINTF_HEADER, "low_delay %i", dec->low_delay); |
294 |
|
if (BitstreamGetBit(bs)) /* vbv_parameters */ |
295 |
{ |
{ |
296 |
DEBUG("+ vbv_parameters"); |
DPRINTF(DPRINTF_HEADER,"+ vbv_parameters"); |
297 |
BitstreamSkip(bs, 15); // first_half_bitrate |
BitstreamSkip(bs, 15); /* first_half_bitrate */ |
298 |
READ_MARKER(); |
READ_MARKER(); |
299 |
BitstreamSkip(bs, 15); // latter_half_bitrate |
BitstreamSkip(bs, 15); /* latter_half_bitrate */ |
300 |
READ_MARKER(); |
READ_MARKER(); |
301 |
BitstreamSkip(bs, 15); // first_half_vbv_buffer_size |
BitstreamSkip(bs, 15); /* first_half_vbv_buffer_size */ |
302 |
READ_MARKER(); |
READ_MARKER(); |
303 |
BitstreamSkip(bs, 3); // latter_half_vbv_buffer_size |
BitstreamSkip(bs, 3); /* latter_half_vbv_buffer_size */ |
304 |
BitstreamSkip(bs, 11); // first_half_vbv_occupancy |
BitstreamSkip(bs, 11); /* first_half_vbv_occupancy */ |
305 |
READ_MARKER(); |
READ_MARKER(); |
306 |
BitstreamSkip(bs, 15); // latter_half_vbv_occupancy |
BitstreamSkip(bs, 15); /* latter_half_vbv_occupancy */ |
307 |
READ_MARKER(); |
READ_MARKER(); |
308 |
|
|
309 |
} |
} |
310 |
} |
} |
311 |
|
|
312 |
dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape |
dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */ |
313 |
// DEBUG1("shape", dec->shape); |
DPRINTF(DPRINTF_HEADER, "shape %i", dec->shape); |
314 |
|
|
315 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { |
316 |
{ |
BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */ |
|
BitstreamSkip(bs, 4); // video_object_layer_shape_extension |
|
317 |
} |
} |
318 |
|
|
319 |
READ_MARKER(); |
READ_MARKER(); |
320 |
|
|
321 |
// *************************** for decode B-frame time *********************** |
/* *************************** for decode B-frame time *********************** */ |
322 |
time_increment_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution |
time_increment_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ |
323 |
time_increment_resolution--; |
|
324 |
//DEBUG1("time_increment_resolution=",time_increment_resolution); |
DPRINTF(DPRINTF_HEADER,"vop_time_increment_resolution %i", time_increment_resolution); |
325 |
if (time_increment_resolution > 0) |
|
326 |
{ |
/* time_increment_resolution--; */ |
|
dec->time_inc_bits = log2bin(time_increment_resolution); |
|
|
} |
|
|
else |
|
|
{ |
|
|
// dec->time_inc_bits = 0; |
|
327 |
|
|
328 |
// for "old" xvid compatibility, set time_inc_bits = 1 |
if (time_increment_resolution > 0) { |
329 |
|
dec->time_inc_bits = log2bin(time_increment_resolution-1); |
330 |
|
} else { |
331 |
|
/* dec->time_inc_bits = 0; */ |
332 |
|
/* for "old" xvid compatibility, set time_inc_bits = 1 */ |
333 |
dec->time_inc_bits = 1; |
dec->time_inc_bits = 1; |
334 |
} |
} |
335 |
|
|
336 |
READ_MARKER(); |
READ_MARKER(); |
337 |
|
|
338 |
if (BitstreamGetBit(bs)) // fixed_vop_rate |
if (BitstreamGetBit(bs)) /* fixed_vop_rate */ |
339 |
{ |
{ |
340 |
BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment |
DPRINTF(DPRINTF_HEADER, "+ fixed_vop_rate"); |
341 |
|
BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */ |
342 |
} |
} |
343 |
|
|
344 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
|
{ |
|
345 |
|
|
346 |
if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { |
|
{ |
|
347 |
uint32_t width, height; |
uint32_t width, height; |
348 |
|
|
349 |
READ_MARKER(); |
READ_MARKER(); |
350 |
width = BitstreamGetBits(bs, 13); // video_object_layer_width |
width = BitstreamGetBits(bs, 13); /* video_object_layer_width */ |
|
//DEBUGI("width", width); |
|
351 |
READ_MARKER(); |
READ_MARKER(); |
352 |
height = BitstreamGetBits(bs, 13); // video_object_layer_height |
height = BitstreamGetBits(bs, 13); /* video_object_layer_height */ |
|
//DEBUGI("height", height); |
|
353 |
READ_MARKER(); |
READ_MARKER(); |
354 |
|
|
355 |
if (width != dec->width || height != dec->height) |
DPRINTF(DPRINTF_HEADER, "width %i", width); |
356 |
{ |
DPRINTF(DPRINTF_HEADER, "height %i", height); |
357 |
DEBUG("FATAL: video dimension discrepancy ***"); |
|
358 |
DEBUG2("bitstream width/height", width, height); |
/* for auto set width & height */ |
359 |
DEBUG2("param width/height", dec->width, dec->height); |
if (dec->width == 0) |
360 |
|
dec->width = width; |
361 |
|
if (dec->height == 0) |
362 |
|
dec->height = height; |
363 |
|
|
364 |
|
if (width != dec->width || height != dec->height) { |
365 |
|
DPRINTF(DPRINTF_ERROR, "XVID_DEC_PARAM width/height does not match bitstream"); |
366 |
return -1; |
return -1; |
367 |
} |
} |
368 |
|
|
369 |
} |
} |
370 |
|
|
371 |
if ((dec->interlacing = BitstreamGetBit(bs))) |
dec->interlacing = BitstreamGetBit(bs); |
372 |
{ |
DPRINTF(DPRINTF_HEADER, "interlace", dec->interlacing); |
|
DEBUG("vol: interlacing"); |
|
|
} |
|
373 |
|
|
374 |
if (!BitstreamGetBit(bs)) // obmc_disable |
if (!BitstreamGetBit(bs)) /* obmc_disable */ |
375 |
{ |
{ |
376 |
DEBUG("IGNORED/TODO: !obmc_disable"); |
DPRINTF(DPRINTF_ERROR, "obmc_disabled==false not supported"); |
377 |
// TODO |
/* TODO */ |
378 |
// fucking divx4.02 has this enabled |
/* fucking divx4.02 has this enabled */ |
379 |
} |
} |
380 |
|
|
381 |
if (BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2))) // sprite_enable |
if (BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2))) /* sprite_enable */ |
382 |
{ |
{ |
383 |
DEBUG("sprite_enable; not supported"); |
DPRINTF(DPRINTF_ERROR, "spriate_enabled not supported"); |
384 |
return -1; |
return -1; |
385 |
} |
} |
386 |
|
|
387 |
if (vol_ver_id != 1 && dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
if (vol_ver_id != 1 && |
388 |
{ |
dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
389 |
BitstreamSkip(bs, 1); // sadct_disable |
BitstreamSkip(bs, 1); /* sadct_disable */ |
390 |
} |
} |
391 |
|
|
392 |
if (BitstreamGetBit(bs)) // not_8_bit |
if (BitstreamGetBit(bs)) /* not_8_bit */ |
|
{ |
|
|
DEBUG("+ not_8_bit [IGNORED/TODO]"); |
|
|
dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision |
|
|
BitstreamSkip(bs, 4); // bits_per_pixel |
|
|
} |
|
|
else |
|
393 |
{ |
{ |
394 |
|
DPRINTF(DPRINTF_HEADER, "not_8_bit==true (ignored)"); |
395 |
|
dec->quant_bits = BitstreamGetBits(bs, 4); /* quant_precision */ |
396 |
|
BitstreamSkip(bs, 4); /* bits_per_pixel */ |
397 |
|
} else { |
398 |
dec->quant_bits = 5; |
dec->quant_bits = 5; |
399 |
} |
} |
400 |
|
|
401 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
402 |
{ |
BitstreamSkip(bs, 1); /* no_gray_quant_update */ |
403 |
BitstreamSkip(bs, 1); // no_gray_quant_update |
BitstreamSkip(bs, 1); /* composition_method */ |
404 |
BitstreamSkip(bs, 1); // composition_method |
BitstreamSkip(bs, 1); /* linear_composition */ |
|
BitstreamSkip(bs, 1); // linear_composition |
|
405 |
} |
} |
406 |
|
|
407 |
dec->quant_type = BitstreamGetBit(bs); // quant_type |
dec->quant_type = BitstreamGetBit(bs); /* quant_type */ |
408 |
// DEBUG1("**** quant_type", dec->quant_type); |
DPRINTF(DPRINTF_HEADER, "quant_type %i", dec->quant_type); |
409 |
|
|
410 |
if (dec->quant_type) |
if (dec->quant_type) { |
411 |
{ |
if (BitstreamGetBit(bs)) /* load_intra_quant_mat */ |
|
if (BitstreamGetBit(bs)) // load_intra_quant_mat |
|
412 |
{ |
{ |
413 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
414 |
|
|
415 |
|
DPRINTF(DPRINTF_HEADER, "load_intra_quant_mat"); |
416 |
|
|
417 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
418 |
set_intra_matrix(matrix); |
set_intra_matrix(matrix); |
419 |
} |
} else |
|
else |
|
420 |
set_intra_matrix(get_default_intra_matrix()); |
set_intra_matrix(get_default_intra_matrix()); |
421 |
|
|
422 |
if (BitstreamGetBit(bs)) // load_inter_quant_mat |
if (BitstreamGetBit(bs)) /* load_inter_quant_mat */ |
423 |
{ |
{ |
424 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
425 |
|
|
426 |
|
DPRINTF(DPRINTF_HEADER, "load_inter_quant_mat"); |
427 |
|
|
428 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
429 |
set_inter_matrix(matrix); |
set_inter_matrix(matrix); |
430 |
} |
} else |
|
else |
|
431 |
set_inter_matrix(get_default_inter_matrix()); |
set_inter_matrix(get_default_inter_matrix()); |
432 |
|
|
433 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
434 |
{ |
DPRINTF(DPRINTF_ERROR, "greyscale matrix not supported"); |
|
// TODO |
|
|
DEBUG("TODO: grayscale matrix stuff"); |
|
435 |
return -1; |
return -1; |
436 |
} |
} |
437 |
|
|
438 |
} |
} |
439 |
|
|
440 |
|
|
441 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
442 |
{ |
DPRINTF(DPRINTF_DEBUG, "QUARTERPEL BITSTREAM"); |
443 |
dec->quarterpel = BitstreamGetBit(bs); // quarter_sampe |
dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */ |
|
if (dec->quarterpel) |
|
|
{ |
|
|
DEBUG("IGNORED/TODO: quarter_sample"); |
|
|
} |
|
444 |
} |
} |
445 |
else |
else |
|
{ |
|
446 |
dec->quarterpel = 0; |
dec->quarterpel = 0; |
|
} |
|
447 |
|
|
448 |
if (!BitstreamGetBit(bs)) // complexity_estimation_disable |
|
449 |
|
if (!BitstreamGetBit(bs)) /* complexity_estimation_disable */ |
450 |
{ |
{ |
451 |
DEBUG("TODO: complexity_estimation header"); |
DPRINTF(DPRINTF_ERROR, "complexity_estimation not supported"); |
|
// TODO |
|
452 |
return -1; |
return -1; |
453 |
} |
} |
454 |
|
|
455 |
if (!BitstreamGetBit(bs)) // resync_marker_disable |
BitstreamSkip(bs, 1); /* resync_marker_disable */ |
|
{ |
|
|
DEBUG("IGNORED/TODO: !resync_marker_disable"); |
|
|
// TODO |
|
|
} |
|
456 |
|
|
457 |
if (BitstreamGetBit(bs)) // data_partitioned |
if (BitstreamGetBit(bs)) /* data_partitioned */ |
458 |
{ |
{ |
459 |
DEBUG("+ data_partitioned"); |
DPRINTF(DPRINTF_ERROR, "data_partitioned not supported"); |
460 |
BitstreamSkip(bs, 1); // reversible_vlc |
BitstreamSkip(bs, 1); /* reversible_vlc */ |
461 |
} |
} |
462 |
|
|
463 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
464 |
|
if (BitstreamGetBit(bs)) /* newpred_enable */ |
465 |
{ |
{ |
466 |
if (BitstreamGetBit(bs)) // newpred_enable |
DPRINTF(DPRINTF_HEADER, "+ newpred_enable"); |
467 |
{ |
BitstreamSkip(bs, 2); /* requested_upstream_message_type */ |
468 |
DEBUG("+ newpred_enable"); |
BitstreamSkip(bs, 1); /* newpred_segment_type */ |
|
BitstreamSkip(bs, 2); // requested_upstream_message_type |
|
|
BitstreamSkip(bs, 1); // newpred_segment_type |
|
469 |
} |
} |
470 |
if (BitstreamGetBit(bs)) // reduced_resolution_vop_enable |
if (BitstreamGetBit(bs)) /* reduced_resolution_vop_enable */ |
471 |
{ |
{ |
472 |
DEBUG("TODO: reduced_resolution_vop_enable"); |
DPRINTF(DPRINTF_ERROR, "reduced_resolution_vop not supported"); |
|
// TODO |
|
473 |
return -1; |
return -1; |
474 |
} |
} |
475 |
} |
} |
476 |
|
|
477 |
if ((dec->scalability=BitstreamGetBit(bs))) // scalability |
if ((dec->scalability = (int8_t)BitstreamGetBit(bs))) /* scalability */ |
478 |
{ |
{ |
479 |
// TODO |
DPRINTF(DPRINTF_ERROR, "scalability not supported"); |
|
DEBUG("TODO: scalability"); |
|
480 |
return -1; |
return -1; |
481 |
} |
} |
482 |
} |
} else /* dec->shape == BINARY_ONLY */ |
|
else // dec->shape == BINARY_ONLY |
|
483 |
{ |
{ |
484 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
485 |
|
if (BitstreamGetBit(bs)) /* scalability */ |
486 |
{ |
{ |
487 |
if (BitstreamGetBit(bs)) // scalability |
DPRINTF(DPRINTF_ERROR, "scalability not supported"); |
|
{ |
|
|
// TODO |
|
|
DEBUG("TODO: scalability"); |
|
488 |
return -1; |
return -1; |
489 |
} |
} |
490 |
} |
} |
491 |
BitstreamSkip(bs, 1); // resync_marker_disable |
BitstreamSkip(bs, 1); /* resync_marker_disable */ |
492 |
|
|
493 |
} |
} |
494 |
|
|
495 |
} |
} else if (start_code == GRPOFVOP_START_CODE) { |
496 |
else if (start_code == GRPOFVOP_START_CODE) |
|
497 |
{ |
DPRINTF(DPRINTF_STARTCODE, "<group_of_vop>"); |
498 |
// DEBUG("group_of_vop"); |
|
499 |
BitstreamSkip(bs, 32); |
BitstreamSkip(bs, 32); |
500 |
{ |
{ |
501 |
int hours, minutes, seconds; |
int hours, minutes, seconds; |
502 |
|
|
503 |
hours = BitstreamGetBits(bs, 5); |
hours = BitstreamGetBits(bs, 5); |
504 |
minutes = BitstreamGetBits(bs, 6); |
minutes = BitstreamGetBits(bs, 6); |
505 |
READ_MARKER(); |
READ_MARKER(); |
506 |
seconds = BitstreamGetBits(bs, 6); |
seconds = BitstreamGetBits(bs, 6); |
507 |
// DEBUG3("hms", hours, minutes, seconds); |
|
508 |
} |
DPRINTF(DPRINTF_HEADER, "time %ih%im%is", hours); |
|
BitstreamSkip(bs, 1); // closed_gov |
|
|
BitstreamSkip(bs, 1); // broken_link |
|
509 |
} |
} |
510 |
else if (start_code == VOP_START_CODE) |
BitstreamSkip(bs, 1); /* closed_gov */ |
511 |
{ |
BitstreamSkip(bs, 1); /* broken_link */ |
512 |
// DEBUG("vop_start_code"); |
|
513 |
BitstreamSkip(bs, 32); // vop_start_code |
} else if (start_code == VOP_START_CODE) { |
514 |
|
|
515 |
coding_type = BitstreamGetBits(bs, 2); // vop_coding_type |
DPRINTF(DPRINTF_STARTCODE, "<vop>"); |
|
//DEBUG1("coding_type", coding_type); |
|
516 |
|
|
517 |
// *************************** for decode B-frame time *********************** |
BitstreamSkip(bs, 32); /* vop_start_code */ |
518 |
while (BitstreamGetBit(bs) != 0) // time_base |
|
519 |
|
coding_type = BitstreamGetBits(bs, 2); /* vop_coding_type */ |
520 |
|
DPRINTF(DPRINTF_HEADER, "coding_type %i", coding_type); |
521 |
|
|
522 |
|
/* *************************** for decode B-frame time *********************** */ |
523 |
|
while (BitstreamGetBit(bs) != 0) /* time_base */ |
524 |
time_incr++; |
time_incr++; |
525 |
|
|
526 |
READ_MARKER(); |
READ_MARKER(); |
527 |
|
|
528 |
//DEBUG1("time_inc_bits", dec->time_inc_bits); |
if (dec->time_inc_bits) { |
529 |
//DEBUG1("vop_time_incr", BitstreamShowBits(bs, dec->time_inc_bits)); |
time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ |
|
if (dec->time_inc_bits) |
|
|
{ |
|
|
//BitstreamSkip(bs, dec->time_inc_bits); // vop_time_increment |
|
|
time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); // vop_time_increment |
|
530 |
} |
} |
531 |
|
|
532 |
|
DPRINTF(DPRINTF_HEADER, "time_base %i", time_incr); |
533 |
|
DPRINTF(DPRINTF_HEADER, "time_increment %i", time_increment); |
534 |
|
|
535 |
|
DPRINTF(DPRINTF_TIMECODE, "%c %i:%i", |
536 |
|
coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : 'B', |
537 |
|
time_incr, time_increment); |
538 |
|
|
539 |
if(coding_type != B_VOP){ |
if(coding_type != B_VOP){ |
540 |
dec->last_time_base = dec->time_base; |
dec->last_time_base = dec->time_base; |
541 |
dec->time_base += time_incr; |
dec->time_base += time_incr; |
542 |
dec->time = dec->time_base*time_increment_resolution + time_increment; |
dec->time = time_increment; |
543 |
dec->time_pp= (uint32_t)(dec->time - dec->last_non_b_time); |
|
544 |
|
/* dec->time_base * time_increment_resolution + |
545 |
|
time_increment; |
546 |
|
*/ dec->time_pp = (uint32_t) |
547 |
|
(time_increment_resolution + dec->time - dec->last_non_b_time)%time_increment_resolution; |
548 |
dec->last_non_b_time= dec->time; |
dec->last_non_b_time= dec->time; |
549 |
}else{ |
}else{ |
550 |
dec->time = (dec->last_time_base + time_incr)*time_increment_resolution + time_increment; |
dec->time = time_increment; |
551 |
dec->time_bp= (uint32_t)(dec->last_non_b_time - dec->time); |
/* |
552 |
|
(dec->last_time_base + |
553 |
|
time_incr) * time_increment_resolution + time_increment; |
554 |
|
*/ |
555 |
|
dec->time_bp = (uint32_t) |
556 |
|
(time_increment_resolution + dec->last_non_b_time - dec->time)%time_increment_resolution; |
557 |
} |
} |
|
//DEBUG1("time_increment=",time_increment); |
|
558 |
|
|
559 |
READ_MARKER(); |
READ_MARKER(); |
560 |
|
|
561 |
if (!BitstreamGetBit(bs)) // vop_coded |
if (!BitstreamGetBit(bs)) /* vop_coded */ |
562 |
{ |
{ |
563 |
|
DPRINTF(DPRINTF_HEADER, "vop_coded==false"); |
564 |
return N_VOP; |
return N_VOP; |
565 |
} |
} |
566 |
|
|
569 |
} |
} |
570 |
*/ |
*/ |
571 |
|
|
572 |
// fix a little bug by MinChen <chenm002@163.com> |
/* fix a little bug by MinChen <chenm002@163.com> */ |
573 |
if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && (coding_type == P_VOP)) |
if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
574 |
{ |
(coding_type == P_VOP)) { |
575 |
*rounding = BitstreamGetBit(bs); // rounding_type |
*rounding = BitstreamGetBit(bs); /* rounding_type */ |
576 |
//DEBUG1("rounding", *rounding); |
DPRINTF(DPRINTF_HEADER, "rounding %i", *rounding); |
577 |
} |
} |
578 |
|
|
579 |
/* if (reduced_resolution_enable) |
/* if (reduced_resolution_enable) |
581 |
} |
} |
582 |
*/ |
*/ |
583 |
|
|
584 |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
|
{ |
|
585 |
uint32_t width, height; |
uint32_t width, height; |
586 |
uint32_t horiz_mc_ref, vert_mc_ref; |
uint32_t horiz_mc_ref, vert_mc_ref; |
587 |
|
|
594 |
vert_mc_ref = BitstreamGetBits(bs, 13); |
vert_mc_ref = BitstreamGetBits(bs, 13); |
595 |
READ_MARKER(); |
READ_MARKER(); |
596 |
|
|
597 |
// DEBUG2("vop_width/height", width, height); |
DPRINTF(DPRINTF_HEADER, "width %i", width); |
598 |
// DEBUG2("ref ", horiz_mc_ref, vert_mc_ref); |
DPRINTF(DPRINTF_HEADER, "height %i", height); |
599 |
|
DPRINTF(DPRINTF_HEADER, "horiz_mc_ref %i", horiz_mc_ref); |
600 |
|
DPRINTF(DPRINTF_HEADER, "vert_mc_ref %i", vert_mc_ref); |
601 |
|
|
602 |
BitstreamSkip(bs, 1); // change_conv_ratio_disable |
BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ |
603 |
if (BitstreamGetBit(bs)) // vop_constant_alpha |
if (BitstreamGetBit(bs)) /* vop_constant_alpha */ |
604 |
{ |
{ |
605 |
BitstreamSkip(bs, 8); // vop_constant_alpha_value |
BitstreamSkip(bs, 8); /* vop_constant_alpha_value */ |
606 |
} |
} |
607 |
} |
} |
608 |
|
|
609 |
|
|
610 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
611 |
{ |
/* intra_dc_vlc_threshold */ |
612 |
// intra_dc_vlc_threshold |
*intra_dc_threshold = |
613 |
*intra_dc_threshold = intra_dc_threshold_table[ BitstreamGetBits(bs,3) ]; |
intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; |
614 |
|
|
615 |
|
if (dec->interlacing) { |
616 |
|
dec->top_field_first = BitstreamGetBit(bs); |
617 |
|
DPRINTF(DPRINTF_HEADER, "interlace top_field_first %i", dec->top_field_first); |
618 |
|
dec->alternate_vertical_scan = BitstreamGetBit(bs); |
619 |
|
DPRINTF(DPRINTF_HEADER, "interlace alternate_vertical_scan %i", dec->alternate_vertical_scan); |
620 |
|
|
|
if (dec->interlacing) |
|
|
{ |
|
|
if ((dec->top_field_first = BitstreamGetBit(bs))) |
|
|
{ |
|
|
DEBUG("vop: top_field_first"); |
|
|
} |
|
|
if ((dec->alternate_vertical_scan = BitstreamGetBit(bs))) |
|
|
{ |
|
|
DEBUG("vop: alternate_vertical_scan"); |
|
|
} |
|
621 |
} |
} |
622 |
} |
} |
623 |
|
|
624 |
if((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) // vop_quant |
if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) /* vop_quant */ |
625 |
*quant = 1; |
*quant = 1; |
626 |
|
|
627 |
//DEBUG1("quant", *quant); |
DPRINTF(DPRINTF_HEADER, "quant %i", *quant); |
628 |
|
|
629 |
if (coding_type != I_VOP) |
if (coding_type != I_VOP) { |
630 |
{ |
*fcode_forward = BitstreamGetBits(bs, 3); /* fcode_forward */ |
631 |
*fcode_forward = BitstreamGetBits(bs, 3); // fcode_forward |
DPRINTF(DPRINTF_HEADER, "fcode_forward %i", *fcode_forward); |
632 |
} |
} |
633 |
|
|
634 |
if (coding_type == B_VOP) |
if (coding_type == B_VOP) { |
635 |
{ |
*fcode_backward = BitstreamGetBits(bs, 3); /* fcode_backward */ |
636 |
*fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward |
DPRINTF(DPRINTF_HEADER, "fcode_backward %i", *fcode_backward); |
637 |
} |
} |
638 |
if (!dec->scalability){ |
if (!dec->scalability){ |
639 |
if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && (coding_type != I_VOP)){ |
if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && |
640 |
BitstreamSkip(bs, 1); // vop_shape_coding_type |
(coding_type != I_VOP)) { |
641 |
|
BitstreamSkip(bs, 1); /* vop_shape_coding_type */ |
642 |
} |
} |
643 |
} |
} |
644 |
return coding_type; |
return coding_type; |
645 |
} |
|
646 |
else if (start_code == USERDATA_START_CODE) |
} else if (start_code == USERDATA_START_CODE) { |
647 |
{ |
|
648 |
// DEBUG("user_data"); |
DPRINTF(DPRINTF_STARTCODE, "<user_data>"); |
649 |
BitstreamSkip(bs, 32); // user_data_start_code |
|
650 |
} |
BitstreamSkip(bs, 32); /* user_data_start_code */ |
651 |
else // start_code == ? |
|
652 |
{ |
} else /* start_code == ? */ |
|
if (BitstreamShowBits(bs, 24) == 0x000001) |
|
653 |
{ |
{ |
654 |
DEBUG1("*** WARNING: unknown start_code", BitstreamShowBits(bs, 32)); |
if (BitstreamShowBits(bs, 24) == 0x000001) { |
655 |
|
DPRINTF(DPRINTF_STARTCODE, "<unknown: %x>", BitstreamShowBits(bs, 32)); |
656 |
} |
} |
657 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 8); |
658 |
} |
} |
659 |
} |
} |
660 |
while ((BitstreamPos(bs) >> 3) < bs->length); |
while ((BitstreamPos(bs) >> 3) < bs->length); |
661 |
|
|
662 |
DEBUG("*** WARNING: no vop_start_code found"); |
/*DPRINTF("*** WARNING: no vop_start_code found"); */ |
663 |
return -1; /* ignore it */ |
return -1; /* ignore it */ |
664 |
} |
} |
665 |
|
|
666 |
|
|
667 |
/* write custom quant matrix */ |
/* write custom quant matrix */ |
668 |
|
|
669 |
static void bs_put_matrix(Bitstream * bs, const int16_t *matrix) |
static void |
670 |
|
bs_put_matrix(Bitstream * bs, |
671 |
|
const int16_t * matrix) |
672 |
{ |
{ |
673 |
int i, j; |
int i, j; |
674 |
const int last = matrix[scan_tables[0][63]]; |
const int last = matrix[scan_tables[0][63]]; |
675 |
|
|
676 |
for (j = 63; j >= 0 && matrix[scan_tables[0][j - 1]] == last; j--) ; |
for (j = 63; j > 0 && matrix[scan_tables[0][j - 1]] == last; j--); |
677 |
|
|
678 |
for (i = 0; i <= j; i++) |
for (i = 0; i <= j; i++) { |
|
{ |
|
679 |
BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
680 |
} |
} |
681 |
|
|
682 |
if (j < 63) |
if (j < 63) { |
|
{ |
|
683 |
BitstreamPutBits(bs, 0, 8); |
BitstreamPutBits(bs, 0, 8); |
684 |
} |
} |
685 |
} |
} |
688 |
/* |
/* |
689 |
write vol header |
write vol header |
690 |
*/ |
*/ |
691 |
void BitstreamWriteVolHeader(Bitstream * const bs, |
void |
692 |
const MBParam * pParam, const FRAMEINFO * frame) |
BitstreamWriteVolHeader(Bitstream * const bs, |
693 |
|
const MBParam * pParam, |
694 |
|
const FRAMEINFO * frame) |
695 |
{ |
{ |
696 |
// video object_start_code & vo_id |
/* video object_start_code & vo_id */ |
697 |
BitstreamPad(bs); |
BitstreamPad(bs); |
698 |
BitstreamPutBits(bs, VO_START_CODE, 27); |
BitstreamPutBits(bs, VO_START_CODE, 27); |
699 |
BitstreamPutBits(bs, 0, 5); |
BitstreamPutBits(bs, 0, 5); |
700 |
|
|
701 |
// video_object_layer_start_code & vol_id |
/* video_object_layer_start_code & vol_id */ |
702 |
BitstreamPutBits(bs, VOL_START_CODE, 28); |
BitstreamPutBits(bs, VOL_START_CODE, 28); |
703 |
BitstreamPutBits(bs, 0, 4); |
BitstreamPutBits(bs, 0, 4); |
704 |
|
|
705 |
BitstreamPutBit(bs, 0); // random_accessible_vol |
BitstreamPutBit(bs, 0); /* random_accessible_vol */ |
706 |
BitstreamPutBits(bs, 0, 8); // video_object_type_indication |
BitstreamPutBits(bs, 0, 8); /* video_object_type_indication */ |
707 |
BitstreamPutBit(bs, 0); // is_object_layer_identified (0=not given) |
BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */ |
708 |
BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1) |
BitstreamPutBits(bs, 1, 4); /* aspect_ratio_info (1=1:1) */ |
709 |
BitstreamPutBit(bs, 0); // vol_control_parameters (0=not given) |
|
710 |
BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) |
BitstreamPutBit(bs, 1); /* vol_control_parameters */ |
711 |
|
BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ |
712 |
|
|
713 |
|
BitstreamPutBit(bs, 1); /* low_delay */ |
714 |
|
|
715 |
|
BitstreamPutBit(bs, 0); /* vbv_parameters (0=not given) */ |
716 |
|
|
717 |
|
BitstreamPutBits(bs, 0, 2); /* video_object_layer_shape (0=rectangular) */ |
718 |
|
|
719 |
WRITE_MARKER(); |
WRITE_MARKER(); |
720 |
|
|
721 |
/* time_increment_resolution; ignored by current decore versions |
/* |
722 |
eg. 2fps res=2 inc=1 |
* time_increment_resolution; ignored by current decore versions |
723 |
25fps res=25 inc=1 |
* eg. 2fps res=2 inc=1 |
724 |
29.97fps res=30000 inc=1001 |
* 25fps res=25 inc=1 |
725 |
|
* 29.97fps res=30000 inc=1001 |
726 |
*/ |
*/ |
|
#ifdef BFRAMES |
|
727 |
BitstreamPutBits(bs, pParam->fbase, 16); |
BitstreamPutBits(bs, pParam->fbase, 16); |
|
#else |
|
|
BitstreamPutBits(bs, 2, 16); |
|
|
#endif |
|
728 |
|
|
|
WRITE_MARKER(); |
|
729 |
|
|
730 |
// fixed_vop_rate |
WRITE_MARKER(); |
|
BitstreamPutBit(bs, 0); |
|
731 |
|
|
732 |
// fixed_time_increment: value=nth_of_sec, nbits = log2(resolution) |
BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ |
733 |
// BitstreamPutBits(bs, 0, 15); |
BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); /* fixed_vop_time_increment */ |
734 |
|
|
735 |
WRITE_MARKER(); |
WRITE_MARKER(); |
736 |
BitstreamPutBits(bs, pParam->width, 13); // width |
BitstreamPutBits(bs, pParam->width, 13); /* width */ |
737 |
WRITE_MARKER(); |
WRITE_MARKER(); |
738 |
BitstreamPutBits(bs, pParam->height, 13); // height |
BitstreamPutBits(bs, pParam->height, 13); /* height */ |
739 |
WRITE_MARKER(); |
WRITE_MARKER(); |
740 |
|
|
741 |
BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); // interlace |
BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); /* interlace */ |
742 |
BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) |
BitstreamPutBit(bs, 1); /* obmc_disable (overlapped block motion compensation) */ |
743 |
BitstreamPutBit(bs, 0); // sprite_enable |
BitstreamPutBit(bs, 0); /* sprite_enable */ |
744 |
BitstreamPutBit(bs, 0); // not_in_bit |
BitstreamPutBit(bs, 0); /* not_in_bit */ |
745 |
|
|
746 |
// quant_type 0=h.263 1=mpeg4(quantizer tables) |
/* quant_type 0=h.263 1=mpeg4(quantizer tables) */ |
747 |
BitstreamPutBit(bs, pParam->m_quant_type); |
BitstreamPutBit(bs, pParam->m_quant_type); |
748 |
|
|
749 |
if (pParam->m_quant_type) |
if (pParam->m_quant_type) { |
750 |
{ |
BitstreamPutBit(bs, get_intra_matrix_status()); /* load_intra_quant_mat */ |
751 |
BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
if (get_intra_matrix_status()) { |
|
if (get_intra_matrix_status()) |
|
|
{ |
|
752 |
bs_put_matrix(bs, get_intra_matrix()); |
bs_put_matrix(bs, get_intra_matrix()); |
753 |
} |
} |
754 |
|
|
755 |
BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat |
BitstreamPutBit(bs, get_inter_matrix_status()); /* load_inter_quant_mat */ |
756 |
if (get_inter_matrix_status()) |
if (get_inter_matrix_status()) { |
|
{ |
|
757 |
bs_put_matrix(bs, get_inter_matrix()); |
bs_put_matrix(bs, get_inter_matrix()); |
758 |
} |
} |
759 |
|
|
760 |
} |
} |
761 |
|
|
762 |
BitstreamPutBit(bs, 1); // complexity_estimation_disable |
BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ |
763 |
BitstreamPutBit(bs, 1); // resync_marker_disable |
BitstreamPutBit(bs, 1); /* resync_marker_disable */ |
764 |
BitstreamPutBit(bs, 0); // data_partitioned |
BitstreamPutBit(bs, 0); /* data_partitioned */ |
765 |
BitstreamPutBit(bs, 0); // scalability |
BitstreamPutBit(bs, 0); /* scalability */ |
766 |
} |
} |
767 |
|
|
768 |
|
|
774 |
time_inc = nth of a second since last resync |
time_inc = nth of a second since last resync |
775 |
(decoder uses these values to determine precise time since last resync) |
(decoder uses these values to determine precise time since last resync) |
776 |
*/ |
*/ |
777 |
void BitstreamWriteVopHeader(Bitstream * const bs, |
void |
778 |
|
BitstreamWriteVopHeader(Bitstream * const bs, |
779 |
const MBParam * pParam, |
const MBParam * pParam, |
780 |
const FRAMEINFO * frame) |
const FRAMEINFO * frame, |
781 |
|
int vop_coded) |
782 |
{ |
{ |
|
#ifdef BFRAMES |
|
783 |
uint32_t i; |
uint32_t i; |
784 |
#endif |
|
785 |
BitstreamPad(bs); |
BitstreamPad(bs); |
786 |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
787 |
|
|
788 |
BitstreamPutBits(bs, frame->coding_type, 2); |
BitstreamPutBits(bs, frame->coding_type, 2); |
789 |
|
|
790 |
// time_base = 0 write n x PutBit(1), PutBit(0) |
/* time_base = 0 write n x PutBit(1), PutBit(0) */ |
791 |
#ifdef BFRAMES |
for (i = 0; i < frame->seconds; i++) { |
|
for (i = 0; i < frame->seconds; i++) |
|
|
{ |
|
792 |
BitstreamPutBit(bs, 1); |
BitstreamPutBit(bs, 1); |
793 |
} |
} |
794 |
BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 0); |
|
#else |
|
|
BitstreamPutBits(bs, 0, 1); |
|
|
#endif |
|
795 |
|
|
796 |
WRITE_MARKER(); |
WRITE_MARKER(); |
797 |
|
|
798 |
// time_increment: value=nth_of_sec, nbits = log2(resolution) |
/* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
|
#ifdef BFRAMES |
|
799 |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
|
dprintf("[%i:%i] %c\n", frame->seconds, frame->ticks, frame->coding_type == I_VOP ? 'I' : frame->coding_type == P_VOP ? 'P' : 'B'); |
|
|
#else |
|
|
BitstreamPutBits(bs, 1, 1); |
|
|
#endif |
|
800 |
|
|
801 |
WRITE_MARKER(); |
WRITE_MARKER(); |
802 |
|
|
803 |
BitstreamPutBits(bs, 1, 1); // vop_coded |
if (!vop_coded) { |
804 |
|
BitstreamPutBits(bs, 0, 1); |
805 |
|
return; |
806 |
|
} |
807 |
|
|
808 |
|
BitstreamPutBits(bs, 1, 1); /* vop_coded */ |
809 |
|
|
810 |
if (frame->coding_type == P_VOP) |
if (frame->coding_type == P_VOP) |
811 |
BitstreamPutBits(bs, frame->rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
812 |
|
|
813 |
BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
814 |
|
|
815 |
if (frame->global_flags & XVID_INTERLACING) |
if (frame->global_flags & XVID_INTERLACING) { |
816 |
{ |
BitstreamPutBit(bs, 1); /* top field first */ |
817 |
BitstreamPutBit(bs, 1); // top field first |
BitstreamPutBit(bs, 0); /* alternate vertical scan */ |
|
BitstreamPutBit(bs, 0); // alternate vertical scan |
|
818 |
} |
} |
819 |
|
|
820 |
BitstreamPutBits(bs, frame->quant, 5); // quantizer |
BitstreamPutBits(bs, frame->quant, 5); /* quantizer */ |
821 |
|
|
822 |
if (frame->coding_type != I_VOP) |
if (frame->coding_type != I_VOP) |
823 |
BitstreamPutBits(bs, frame->fcode, 3); // forward_fixed_code |
BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ |
824 |
|
|
825 |
if (frame->coding_type == B_VOP) |
if (frame->coding_type == B_VOP) |
826 |
BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code |
BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */ |
827 |
|
|
828 |
} |
} |