41 |
* * |
* * |
42 |
* Revision history: * |
* Revision history: * |
43 |
* * |
* * |
44 |
|
* 05.01.2003 GMC support - gruel * |
45 |
|
* 04.10.2002 qpel support - Isibaar * |
46 |
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* 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 |
|
* 20.05.2002 added BitstreamWriteUserData * |
51 |
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* 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 |
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* MinChen <chenm001@163.com> * |
55 |
|
* 06.05.2002 low_delay * |
56 |
* 06.05.2002 fixed fincr/fbase error * |
* 06.05.2002 fixed fincr/fbase error * |
57 |
* 01.05.2002 added BVOP support to BitstreamWriteVopHeader * |
* 01.05.2002 added BVOP support to BitstreamWriteVopHeader * |
58 |
* 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> * |
* 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> * |
66 |
******************************************************************************/ |
******************************************************************************/ |
67 |
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68 |
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69 |
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#include <string.h> |
70 |
|
#include <stdio.h> |
71 |
|
|
72 |
#include "bitstream.h" |
#include "bitstream.h" |
73 |
#include "zigzag.h" |
#include "zigzag.h" |
74 |
#include "../quant/quant_matrix.h" |
#include "../quant/quant_matrix.h" |
75 |
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#include "mbcoding.h" |
76 |
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|
77 |
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|
78 |
static uint32_t __inline log2bin(uint32_t value) |
static uint32_t __inline |
79 |
|
log2bin(uint32_t value) |
80 |
{ |
{ |
81 |
/* Changed by Chenm001 */ |
/* Changed by Chenm001 */ |
82 |
#ifndef WIN32 |
#if !defined(_MSC_VER) |
83 |
int n = 0; |
int n = 0; |
84 |
while (value) |
|
85 |
{ |
while (value) { |
86 |
value >>= 1; |
value >>= 1; |
87 |
n++; |
n++; |
88 |
} |
} |
96 |
} |
} |
97 |
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|
98 |
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|
99 |
static const uint32_t intra_dc_threshold_table[] = |
static const uint32_t intra_dc_threshold_table[] = { |
|
{ |
|
100 |
32, /* never use */ |
32, /* never use */ |
101 |
13, |
13, |
102 |
15, |
15, |
108 |
}; |
}; |
109 |
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|
110 |
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|
111 |
void bs_get_matrix(Bitstream * bs, uint8_t * matrix) |
void |
112 |
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bs_get_matrix(Bitstream * bs, |
113 |
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uint8_t * matrix) |
114 |
{ |
{ |
115 |
int i = 0; |
int i = 0; |
116 |
int last, value = 0; |
int last, value = 0; |
117 |
|
|
118 |
do |
do { |
|
{ |
|
119 |
last = value; |
last = value; |
120 |
value = BitstreamGetBits(bs, 8); |
value = BitstreamGetBits(bs, 8); |
121 |
matrix[ scan_tables[0][i++] ] = value; |
matrix[ scan_tables[0][i++] ] = value; |
122 |
} |
} |
123 |
while (value != 0 && i < 64); |
while (value != 0 && i < 64); |
124 |
|
i--; /* fix little bug at coeff not full */ |
125 |
|
|
126 |
while (i < 64) |
while (i < 64) { |
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{ |
|
127 |
matrix[ scan_tables[0][i++] ] = last; |
matrix[ scan_tables[0][i++] ] = last; |
128 |
} |
} |
129 |
} |
} |
130 |
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131 |
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132 |
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|
133 |
/* |
/* |
134 |
decode headers |
* for PVOP addbits == fcode - 1 |
135 |
returns coding_type, or -1 if error |
* for BVOP addbits == max(fcode,bcode) - 1 |
136 |
|
* returns mbpos |
137 |
*/ |
*/ |
138 |
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int |
139 |
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read_video_packet_header(Bitstream *bs, |
140 |
|
DECODER * dec, |
141 |
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const int addbits, |
142 |
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int * quant, |
143 |
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int * fcode_forward, |
144 |
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int * fcode_backward, |
145 |
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int * intra_dc_threshold) |
146 |
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{ |
147 |
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int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits; |
148 |
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int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1); |
149 |
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int mbnum; |
150 |
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int hec = 0; |
151 |
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152 |
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BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs)); |
153 |
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BitstreamSkip(bs, startcode_bits); |
154 |
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155 |
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DPRINTF(XVID_DEBUG_STARTCODE, "<video_packet_header>\n"); |
156 |
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157 |
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) |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
158 |
{ |
{ |
159 |
uint32_t vol_ver_id; |
hec = BitstreamGetBit(bs); /* header_extension_code */ |
160 |
static uint32_t time_increment_resolution; |
if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */)) |
161 |
uint32_t coding_type; |
{ |
162 |
uint32_t start_code; |
BitstreamSkip(bs, 13); /* vop_width */ |
163 |
uint32_t time_incr=0; |
READ_MARKER(); |
164 |
int32_t time_increment; |
BitstreamSkip(bs, 13); /* vop_height */ |
165 |
|
READ_MARKER(); |
166 |
|
BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */ |
167 |
|
READ_MARKER(); |
168 |
|
BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */ |
169 |
|
READ_MARKER(); |
170 |
|
} |
171 |
|
} |
172 |
|
|
173 |
do |
mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */ |
174 |
|
DPRINTF(XVID_DEBUG_HEADER, "mbnum %i\n", mbnum); |
175 |
|
|
176 |
|
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
177 |
{ |
{ |
178 |
BitstreamByteAlign(bs); |
*quant = BitstreamGetBits(bs, dec->quant_bits); /* quant_scale */ |
179 |
start_code = BitstreamShowBits(bs, 32); |
DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant); |
180 |
|
} |
181 |
|
|
182 |
|
if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
183 |
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hec = BitstreamGetBit(bs); /* header_extension_code */ |
184 |
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185 |
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186 |
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DPRINTF(XVID_DEBUG_HEADER, "header_extension_code %i\n", hec); |
187 |
|
if (hec) |
188 |
|
{ |
189 |
|
int time_base; |
190 |
|
int time_increment; |
191 |
|
int coding_type; |
192 |
|
|
193 |
|
for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */ |
194 |
|
READ_MARKER(); |
195 |
|
if (dec->time_inc_bits) |
196 |
|
time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */ |
197 |
|
READ_MARKER(); |
198 |
|
DPRINTF(XVID_DEBUG_HEADER,"time %i:%i\n", time_base, time_increment); |
199 |
|
|
200 |
|
coding_type = BitstreamGetBits(bs, 2); |
201 |
|
DPRINTF(XVID_DEBUG_HEADER,"coding_type %i\n", coding_type); |
202 |
|
|
203 |
if (start_code == VISOBJSEQ_START_CODE) |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
204 |
{ |
{ |
205 |
// DEBUG("visual_object_sequence"); |
BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ |
206 |
BitstreamSkip(bs, 32); // visual_object_sequence_start_code |
if (coding_type != I_VOP) |
207 |
BitstreamSkip(bs, 8); // profile_and_level_indication |
BitstreamSkip(bs, 1); /* vop_shape_coding_type */ |
208 |
} |
} |
209 |
else if (start_code == VISOBJSEQ_STOP_CODE) |
|
210 |
|
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
211 |
|
{ |
212 |
|
*intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; |
213 |
|
|
214 |
|
if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP && |
215 |
|
dec->sprite_warping_points > 0) |
216 |
{ |
{ |
217 |
BitstreamSkip(bs, 32); // visual_object_sequence_stop_code |
/* TODO: sprite trajectory */ |
218 |
} |
} |
219 |
else if (start_code == VISOBJ_START_CODE) |
if (dec->reduced_resolution_enable && |
220 |
|
dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
221 |
|
(coding_type == P_VOP || coding_type == I_VOP)) |
222 |
{ |
{ |
223 |
// DEBUG("visual_object"); |
BitstreamSkip(bs, 1); /* XXX: vop_reduced_resolution */ |
224 |
BitstreamSkip(bs,32); // visual_object_start_code |
} |
225 |
if (BitstreamGetBit(bs)) // is_visual_object_identified |
|
226 |
|
if (coding_type != I_VOP && fcode_forward) |
227 |
{ |
{ |
228 |
vol_ver_id = BitstreamGetBits(bs,4); // visual_object_ver_id |
*fcode_forward = BitstreamGetBits(bs, 3); |
229 |
BitstreamSkip(bs, 3); // visual_object_priority |
DPRINTF(XVID_DEBUG_HEADER,"fcode_forward %i\n", *fcode_forward); |
230 |
} |
} |
231 |
else |
|
232 |
|
if (coding_type == B_VOP && fcode_backward) |
233 |
{ |
{ |
234 |
vol_ver_id = 1; |
*fcode_backward = BitstreamGetBits(bs, 3); |
235 |
|
DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i\n", *fcode_backward); |
236 |
|
} |
237 |
|
} |
238 |
|
|
239 |
} |
} |
240 |
|
|
241 |
if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) // visual_object_type |
if (dec->newpred_enable) |
242 |
{ |
{ |
243 |
DEBUG("visual_object_type != video"); |
int vop_id; |
244 |
return -1; |
int vop_id_for_prediction; |
245 |
|
|
246 |
|
vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
247 |
|
DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id); |
248 |
|
if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ |
249 |
|
{ |
250 |
|
vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
251 |
|
DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
252 |
|
} |
253 |
|
READ_MARKER(); |
254 |
} |
} |
|
BitstreamSkip(bs, 4); |
|
255 |
|
|
256 |
// video_signal_type |
return mbnum; |
257 |
|
} |
258 |
|
|
259 |
|
|
260 |
|
|
261 |
|
|
262 |
|
/* vol estimation header */ |
263 |
|
static void |
264 |
|
read_vol_complexity_estimation_header(Bitstream * bs, DECODER * dec) |
265 |
|
{ |
266 |
|
ESTIMATION * e = &dec->estimation; |
267 |
|
|
268 |
if (BitstreamGetBit(bs)) // video_signal_type |
e->method = BitstreamGetBits(bs, 2); /* estimation_method */ |
269 |
|
DPRINTF(XVID_DEBUG_HEADER,"+ complexity_estimation_header; method=%i\n", e->method); |
270 |
|
|
271 |
|
if (e->method == 0 || e->method == 1) |
272 |
|
{ |
273 |
|
if (!BitstreamGetBit(bs)) /* shape_complexity_estimation_disable */ |
274 |
{ |
{ |
275 |
DEBUG("+ video_signal_type"); |
e->opaque = BitstreamGetBit(bs); /* opaque */ |
276 |
BitstreamSkip(bs, 3); // video_format |
e->transparent = BitstreamGetBit(bs); /* transparent */ |
277 |
BitstreamSkip(bs, 1); // video_range |
e->intra_cae = BitstreamGetBit(bs); /* intra_cae */ |
278 |
if (BitstreamGetBit(bs)) // color_description |
e->inter_cae = BitstreamGetBit(bs); /* inter_cae */ |
279 |
|
e->no_update = BitstreamGetBit(bs); /* no_update */ |
280 |
|
e->upsampling = BitstreamGetBit(bs); /* upsampling */ |
281 |
|
} |
282 |
|
|
283 |
|
if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_1_disable */ |
284 |
{ |
{ |
285 |
DEBUG("+ color_description"); |
e->intra_blocks = BitstreamGetBit(bs); /* intra_blocks */ |
286 |
BitstreamSkip(bs, 8); // color_primaries |
e->inter_blocks = BitstreamGetBit(bs); /* inter_blocks */ |
287 |
BitstreamSkip(bs, 8); // transfer_characteristics |
e->inter4v_blocks = BitstreamGetBit(bs); /* inter4v_blocks */ |
288 |
BitstreamSkip(bs, 8); // matrix_coefficients |
e->not_coded_blocks = BitstreamGetBit(bs); /* not_coded_blocks */ |
289 |
} |
} |
290 |
} |
} |
291 |
|
|
292 |
|
READ_MARKER(); |
293 |
|
|
294 |
|
if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_2_disable */ |
295 |
|
{ |
296 |
|
e->dct_coefs = BitstreamGetBit(bs); /* dct_coefs */ |
297 |
|
e->dct_lines = BitstreamGetBit(bs); /* dct_lines */ |
298 |
|
e->vlc_symbols = BitstreamGetBit(bs); /* vlc_symbols */ |
299 |
|
e->vlc_bits = BitstreamGetBit(bs); /* vlc_bits */ |
300 |
|
} |
301 |
|
|
302 |
|
if (!BitstreamGetBit(bs)) /* motion_compensation_complexity_disable */ |
303 |
|
{ |
304 |
|
e->apm = BitstreamGetBit(bs); /* apm */ |
305 |
|
e->npm = BitstreamGetBit(bs); /* npm */ |
306 |
|
e->interpolate_mc_q = BitstreamGetBit(bs); /* interpolate_mc_q */ |
307 |
|
e->forw_back_mc_q = BitstreamGetBit(bs); /* forw_back_mc_q */ |
308 |
|
e->halfpel2 = BitstreamGetBit(bs); /* halfpel2 */ |
309 |
|
e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */ |
310 |
} |
} |
311 |
else if ((start_code & ~0x1f) == VIDOBJ_START_CODE) |
|
312 |
|
READ_MARKER(); |
313 |
|
|
314 |
|
if (e->method == 1) |
315 |
|
{ |
316 |
|
if (!BitstreamGetBit(bs)) /* version2_complexity_estimation_disable */ |
317 |
{ |
{ |
318 |
BitstreamSkip(bs, 32); // video_object_start_code |
e->sadct = BitstreamGetBit(bs); /* sadct */ |
319 |
|
e->quarterpel = BitstreamGetBit(bs); /* quarterpel */ |
320 |
|
} |
321 |
|
} |
322 |
|
} |
323 |
|
|
324 |
|
|
325 |
|
/* vop estimation header */ |
326 |
|
static void |
327 |
|
read_vop_complexity_estimation_header(Bitstream * bs, DECODER * dec, int coding_type) |
328 |
|
{ |
329 |
|
ESTIMATION * e = &dec->estimation; |
330 |
|
|
331 |
|
if (e->method == 0 || e->method == 1) |
332 |
|
{ |
333 |
|
if (coding_type == I_VOP) { |
334 |
|
if (e->opaque) BitstreamSkip(bs, 8); /* dcecs_opaque */ |
335 |
|
if (e->transparent) BitstreamSkip(bs, 8); /* */ |
336 |
|
if (e->intra_cae) BitstreamSkip(bs, 8); /* */ |
337 |
|
if (e->inter_cae) BitstreamSkip(bs, 8); /* */ |
338 |
|
if (e->no_update) BitstreamSkip(bs, 8); /* */ |
339 |
|
if (e->upsampling) BitstreamSkip(bs, 8); /* */ |
340 |
|
if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
341 |
|
if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
342 |
|
if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
343 |
|
if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
344 |
|
if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
345 |
|
if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
346 |
|
if (e->sadct) BitstreamSkip(bs, 8); /* */ |
347 |
|
} |
348 |
|
|
349 |
|
if (coding_type == P_VOP) { |
350 |
|
if (e->opaque) BitstreamSkip(bs, 8); /* */ |
351 |
|
if (e->transparent) BitstreamSkip(bs, 8); /* */ |
352 |
|
if (e->intra_cae) BitstreamSkip(bs, 8); /* */ |
353 |
|
if (e->inter_cae) BitstreamSkip(bs, 8); /* */ |
354 |
|
if (e->no_update) BitstreamSkip(bs, 8); /* */ |
355 |
|
if (e->upsampling) BitstreamSkip(bs, 8); /* */ |
356 |
|
if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
357 |
|
if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
358 |
|
if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
359 |
|
if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
360 |
|
if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
361 |
|
if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
362 |
|
if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ |
363 |
|
if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ |
364 |
|
if (e->apm) BitstreamSkip(bs, 8); /* */ |
365 |
|
if (e->npm) BitstreamSkip(bs, 8); /* */ |
366 |
|
if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ |
367 |
|
if (e->halfpel2) BitstreamSkip(bs, 8); /* */ |
368 |
|
if (e->halfpel4) BitstreamSkip(bs, 8); /* */ |
369 |
|
if (e->sadct) BitstreamSkip(bs, 8); /* */ |
370 |
|
if (e->quarterpel) BitstreamSkip(bs, 8); /* */ |
371 |
|
} |
372 |
|
if (coding_type == B_VOP) { |
373 |
|
if (e->opaque) BitstreamSkip(bs, 8); /* */ |
374 |
|
if (e->transparent) BitstreamSkip(bs, 8); /* */ |
375 |
|
if (e->intra_cae) BitstreamSkip(bs, 8); /* */ |
376 |
|
if (e->inter_cae) BitstreamSkip(bs, 8); /* */ |
377 |
|
if (e->no_update) BitstreamSkip(bs, 8); /* */ |
378 |
|
if (e->upsampling) BitstreamSkip(bs, 8); /* */ |
379 |
|
if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
380 |
|
if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
381 |
|
if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
382 |
|
if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
383 |
|
if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
384 |
|
if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
385 |
|
if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ |
386 |
|
if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ |
387 |
|
if (e->apm) BitstreamSkip(bs, 8); /* */ |
388 |
|
if (e->npm) BitstreamSkip(bs, 8); /* */ |
389 |
|
if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ |
390 |
|
if (e->halfpel2) BitstreamSkip(bs, 8); /* */ |
391 |
|
if (e->halfpel4) BitstreamSkip(bs, 8); /* */ |
392 |
|
if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ |
393 |
|
if (e->sadct) BitstreamSkip(bs, 8); /* */ |
394 |
|
if (e->quarterpel) BitstreamSkip(bs, 8); /* */ |
395 |
|
} |
396 |
|
|
397 |
|
if (coding_type == S_VOP && dec->sprite_enable == SPRITE_STATIC) { |
398 |
|
if (e->intra_blocks) BitstreamSkip(bs, 8); /* */ |
399 |
|
if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */ |
400 |
|
if (e->dct_coefs) BitstreamSkip(bs, 8); /* */ |
401 |
|
if (e->dct_lines) BitstreamSkip(bs, 8); /* */ |
402 |
|
if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */ |
403 |
|
if (e->vlc_bits) BitstreamSkip(bs, 8); /* */ |
404 |
|
if (e->inter_blocks) BitstreamSkip(bs, 8); /* */ |
405 |
|
if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */ |
406 |
|
if (e->apm) BitstreamSkip(bs, 8); /* */ |
407 |
|
if (e->npm) BitstreamSkip(bs, 8); /* */ |
408 |
|
if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */ |
409 |
|
if (e->halfpel2) BitstreamSkip(bs, 8); /* */ |
410 |
|
if (e->halfpel4) BitstreamSkip(bs, 8); /* */ |
411 |
|
if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */ |
412 |
|
} |
413 |
} |
} |
414 |
else if ((start_code & ~0xf) == VIDOBJLAY_START_CODE) |
} |
415 |
|
|
416 |
|
|
417 |
|
|
418 |
|
|
419 |
|
|
420 |
|
/* |
421 |
|
decode headers |
422 |
|
returns coding_type, or -1 if error |
423 |
|
*/ |
424 |
|
|
425 |
|
#define VIDOBJ_START_CODE_MASK 0x0000001f |
426 |
|
#define VIDOBJLAY_START_CODE_MASK 0x0000000f |
427 |
|
|
428 |
|
int |
429 |
|
BitstreamReadHeaders(Bitstream * bs, |
430 |
|
DECODER * dec, |
431 |
|
uint32_t * rounding, |
432 |
|
uint32_t * reduced_resolution, |
433 |
|
uint32_t * quant, |
434 |
|
uint32_t * fcode_forward, |
435 |
|
uint32_t * fcode_backward, |
436 |
|
uint32_t * intra_dc_threshold, |
437 |
|
WARPPOINTS *gmc_warp) |
438 |
{ |
{ |
439 |
// DEBUG("video_object_layer"); |
uint32_t vol_ver_id; |
440 |
BitstreamSkip(bs, 32); // video_object_layer_start_code |
uint32_t coding_type; |
441 |
|
uint32_t start_code; |
442 |
|
uint32_t time_incr = 0; |
443 |
|
int32_t time_increment = 0; |
444 |
|
int resize = 0; |
445 |
|
|
446 |
|
do { |
447 |
|
|
448 |
|
BitstreamByteAlign(bs); |
449 |
|
start_code = BitstreamShowBits(bs, 32); |
450 |
|
|
451 |
|
if (start_code == VISOBJSEQ_START_CODE) { |
452 |
|
|
453 |
|
int profile; |
454 |
|
|
455 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object_sequence>\n"); |
456 |
|
|
457 |
|
BitstreamSkip(bs, 32); /* visual_object_sequence_start_code */ |
458 |
|
profile = BitstreamGetBits(bs, 8); /* profile_and_level_indication */ |
459 |
|
|
460 |
BitstreamSkip(bs, 1); // random_accessible_vol |
DPRINTF(XVID_DEBUG_HEADER, "profile_and_level_indication %i\n", profile); |
461 |
|
|
462 |
// video_object_type_indication |
} else if (start_code == VISOBJSEQ_STOP_CODE) { |
463 |
if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && |
|
464 |
BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && |
BitstreamSkip(bs, 32); /* visual_object_sequence_stop_code */ |
465 |
BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && |
|
466 |
BitstreamShowBits(bs, 8) != 0) // BUGGY DIVX |
DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>\n"); |
467 |
|
|
468 |
|
} else if (start_code == VISOBJ_START_CODE) { |
469 |
|
int visobj_ver_id; |
470 |
|
|
471 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>\n"); |
472 |
|
|
473 |
|
BitstreamSkip(bs, 32); /* visual_object_start_code */ |
474 |
|
if (BitstreamGetBit(bs)) /* is_visual_object_identified */ |
475 |
|
{ |
476 |
|
visobj_ver_id = BitstreamGetBits(bs, 4); /* visual_object_ver_id */ |
477 |
|
DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i\n", visobj_ver_id); |
478 |
|
BitstreamSkip(bs, 3); /* visual_object_priority */ |
479 |
|
} else { |
480 |
|
visobj_ver_id = 1; |
481 |
|
} |
482 |
|
|
483 |
|
if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) /* visual_object_type */ |
484 |
{ |
{ |
485 |
DEBUG1("video_object_type_indication not supported", BitstreamShowBits(bs, 8)); |
DPRINTF(XVID_DEBUG_ERROR, "visual_object_type != video\n"); |
486 |
return -1; |
return -1; |
487 |
} |
} |
488 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 4); |
489 |
|
|
490 |
|
/* video_signal_type */ |
491 |
|
|
492 |
if (BitstreamGetBit(bs)) // is_object_layer_identifier |
if (BitstreamGetBit(bs)) /* video_signal_type */ |
493 |
|
{ |
494 |
|
DPRINTF(XVID_DEBUG_HEADER,"+ video_signal_type\n"); |
495 |
|
BitstreamSkip(bs, 3); /* video_format */ |
496 |
|
BitstreamSkip(bs, 1); /* video_range */ |
497 |
|
if (BitstreamGetBit(bs)) /* color_description */ |
498 |
{ |
{ |
499 |
DEBUG("+ is_object_layer_identifier"); |
DPRINTF(XVID_DEBUG_HEADER,"+ color_description"); |
500 |
vol_ver_id = BitstreamGetBits(bs,4); // video_object_layer_verid |
BitstreamSkip(bs, 8); /* color_primaries */ |
501 |
BitstreamSkip(bs, 3); // video_object_layer_priority |
BitstreamSkip(bs, 8); /* transfer_characteristics */ |
502 |
|
BitstreamSkip(bs, 8); /* matrix_coefficients */ |
503 |
} |
} |
504 |
else |
} |
505 |
|
} else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) { |
506 |
|
|
507 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<video_object>\n"); |
508 |
|
DPRINTF(XVID_DEBUG_HEADER, "vo id %i\n", start_code & VIDOBJ_START_CODE_MASK); |
509 |
|
|
510 |
|
BitstreamSkip(bs, 32); /* video_object_start_code */ |
511 |
|
|
512 |
|
} else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) { |
513 |
|
|
514 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<video_object_layer>\n"); |
515 |
|
DPRINTF(XVID_DEBUG_HEADER, "vol id %i\n", start_code & VIDOBJLAY_START_CODE_MASK); |
516 |
|
|
517 |
|
BitstreamSkip(bs, 32); /* video_object_layer_start_code */ |
518 |
|
BitstreamSkip(bs, 1); /* random_accessible_vol */ |
519 |
|
|
520 |
|
BitstreamSkip(bs, 8); /* video_object_type_indication */ |
521 |
|
|
522 |
|
if (BitstreamGetBit(bs)) /* is_object_layer_identifier */ |
523 |
{ |
{ |
524 |
|
DPRINTF(XVID_DEBUG_HEADER, "+ is_object_layer_identifier\n"); |
525 |
|
vol_ver_id = BitstreamGetBits(bs, 4); /* video_object_layer_verid */ |
526 |
|
DPRINTF(XVID_DEBUG_HEADER,"ver_id %i\n", vol_ver_id); |
527 |
|
BitstreamSkip(bs, 3); /* video_object_layer_priority */ |
528 |
|
} else { |
529 |
vol_ver_id = 1; |
vol_ver_id = 1; |
530 |
} |
} |
|
//DEBUGI("vol_ver_id", vol_ver_id); |
|
531 |
|
|
532 |
if (BitstreamGetBits(bs, 4) == VIDOBJLAY_AR_EXTPAR) // aspect_ratio_info |
dec->aspect_ratio = BitstreamGetBits(bs, 4); |
533 |
|
|
534 |
|
if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) /* aspect_ratio_info */ |
535 |
{ |
{ |
536 |
DEBUG("+ aspect_ratio_info"); |
DPRINTF(XVID_DEBUG_HEADER, "+ aspect_ratio_info\n"); |
537 |
BitstreamSkip(bs, 8); // par_width |
dec->par_width = BitstreamGetBits(bs, 8); /* par_width */ |
538 |
BitstreamSkip(bs, 8); // par_height |
dec->par_height = BitstreamGetBits(bs, 8); /* par_height */ |
539 |
} |
} |
540 |
|
|
541 |
if (BitstreamGetBit(bs)) // vol_control_parameters |
if (BitstreamGetBit(bs)) /* vol_control_parameters */ |
542 |
{ |
{ |
543 |
DEBUG("+ vol_control_parameters"); |
DPRINTF(XVID_DEBUG_HEADER, "+ vol_control_parameters\n"); |
544 |
BitstreamSkip(bs, 2); // chroma_format |
BitstreamSkip(bs, 2); /* chroma_format */ |
545 |
BitstreamSkip(bs, 1); // low_delay |
dec->low_delay = BitstreamGetBit(bs); /* low_delay */ |
546 |
if (BitstreamGetBit(bs)) // vbv_parameters |
DPRINTF(XVID_DEBUG_HEADER, "low_delay %i\n", dec->low_delay); |
547 |
|
if (BitstreamGetBit(bs)) /* vbv_parameters */ |
548 |
{ |
{ |
549 |
DEBUG("+ vbv_parameters"); |
unsigned int bitrate; |
550 |
BitstreamSkip(bs, 15); // first_half_bitrate |
unsigned int buffer_size; |
551 |
|
unsigned int occupancy; |
552 |
|
|
553 |
|
DPRINTF(XVID_DEBUG_HEADER,"+ vbv_parameters\n"); |
554 |
|
|
555 |
|
bitrate = BitstreamGetBits(bs,15) << 15; /* first_half_bit_rate */ |
556 |
READ_MARKER(); |
READ_MARKER(); |
557 |
BitstreamSkip(bs, 15); // latter_half_bitrate |
bitrate |= BitstreamGetBits(bs,15); /* latter_half_bit_rate */ |
558 |
READ_MARKER(); |
READ_MARKER(); |
559 |
BitstreamSkip(bs, 15); // first_half_vbv_buffer_size |
|
560 |
|
buffer_size = BitstreamGetBits(bs, 15) << 3; /* first_half_vbv_buffer_size */ |
561 |
READ_MARKER(); |
READ_MARKER(); |
562 |
BitstreamSkip(bs, 3); // latter_half_vbv_buffer_size |
buffer_size |= BitstreamGetBits(bs, 3); /* latter_half_vbv_buffer_size */ |
563 |
BitstreamSkip(bs, 11); // first_half_vbv_occupancy |
|
564 |
|
occupancy = BitstreamGetBits(bs, 11) << 15; /* first_half_vbv_occupancy */ |
565 |
READ_MARKER(); |
READ_MARKER(); |
566 |
BitstreamSkip(bs, 15); // latter_half_vbv_occupancy |
occupancy |= BitstreamGetBits(bs, 15); /* latter_half_vbv_occupancy */ |
567 |
READ_MARKER(); |
READ_MARKER(); |
568 |
|
|
569 |
|
DPRINTF(XVID_DEBUG_HEADER,"bitrate %d (unit=400 bps)\n", bitrate); |
570 |
|
DPRINTF(XVID_DEBUG_HEADER,"buffer_size %d (unit=16384 bits)\n", buffer_size); |
571 |
|
DPRINTF(XVID_DEBUG_HEADER,"occupancy %d (unit=64 bits)\n", occupancy); |
572 |
} |
} |
573 |
|
}else{ |
574 |
|
dec->low_delay = dec->low_delay_default; |
575 |
} |
} |
576 |
|
|
577 |
dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape |
dec->shape = BitstreamGetBits(bs, 2); /* video_object_layer_shape */ |
|
// DEBUG1("shape", dec->shape); |
|
578 |
|
|
579 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) |
DPRINTF(XVID_DEBUG_HEADER, "shape %i\n", dec->shape); |
580 |
|
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
581 |
{ |
{ |
582 |
BitstreamSkip(bs, 4); // video_object_layer_shape_extension |
DPRINTF(XVID_DEBUG_ERROR,"non-rectangular shapes are not supported\n"); |
583 |
|
} |
584 |
|
|
585 |
|
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { |
586 |
|
BitstreamSkip(bs, 4); /* video_object_layer_shape_extension */ |
587 |
} |
} |
588 |
|
|
589 |
READ_MARKER(); |
READ_MARKER(); |
590 |
|
|
591 |
// *************************** for decode B-frame time *********************** |
/********************** for decode B-frame time ***********************/ |
592 |
time_increment_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution |
dec->time_inc_resolution = BitstreamGetBits(bs, 16); /* vop_time_increment_resolution */ |
593 |
time_increment_resolution--; |
DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i\n", dec->time_inc_resolution); |
594 |
//DEBUG1("time_increment_resolution=",time_increment_resolution); |
|
595 |
if (time_increment_resolution > 0) |
#if 0 |
596 |
{ |
dec->time_inc_resolution--; |
597 |
dec->time_inc_bits = log2bin(time_increment_resolution); |
#endif |
|
} |
|
|
else |
|
|
{ |
|
|
// dec->time_inc_bits = 0; |
|
598 |
|
|
599 |
// for "old" xvid compatibility, set time_inc_bits = 1 |
if (dec->time_inc_resolution > 0) { |
600 |
|
dec->time_inc_bits = log2bin(dec->time_inc_resolution-1); |
601 |
|
} else { |
602 |
|
#if 0 |
603 |
|
dec->time_inc_bits = 0; |
604 |
|
#endif |
605 |
|
/* for "old" xvid compatibility, set time_inc_bits = 1 */ |
606 |
dec->time_inc_bits = 1; |
dec->time_inc_bits = 1; |
607 |
} |
} |
608 |
|
|
609 |
READ_MARKER(); |
READ_MARKER(); |
610 |
|
|
611 |
if (BitstreamGetBit(bs)) // fixed_vop_rate |
if (BitstreamGetBit(bs)) /* fixed_vop_rate */ |
612 |
{ |
{ |
613 |
BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment |
DPRINTF(XVID_DEBUG_HEADER, "+ fixed_vop_rate\n"); |
614 |
|
BitstreamSkip(bs, dec->time_inc_bits); /* fixed_vop_time_increment */ |
615 |
} |
} |
616 |
|
|
617 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
|
{ |
|
618 |
|
|
619 |
if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { |
|
{ |
|
620 |
uint32_t width, height; |
uint32_t width, height; |
621 |
|
|
622 |
READ_MARKER(); |
READ_MARKER(); |
623 |
width = BitstreamGetBits(bs, 13); // video_object_layer_width |
width = BitstreamGetBits(bs, 13); /* video_object_layer_width */ |
|
//DEBUGI("width", width); |
|
624 |
READ_MARKER(); |
READ_MARKER(); |
625 |
height = BitstreamGetBits(bs, 13); // video_object_layer_height |
height = BitstreamGetBits(bs, 13); /* video_object_layer_height */ |
|
//DEBUGI("height", height); |
|
626 |
READ_MARKER(); |
READ_MARKER(); |
627 |
|
|
628 |
if (width != dec->width || height != dec->height) |
DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
629 |
|
DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); |
630 |
|
|
631 |
|
if (dec->width != width || dec->height != height) |
632 |
|
{ |
633 |
|
if (dec->fixed_dimensions) |
634 |
{ |
{ |
635 |
DEBUG("FATAL: video dimension discrepancy ***"); |
DPRINTF(XVID_DEBUG_ERROR, "decoder width/height does not match bitstream\n"); |
|
DEBUG2("bitstream width/height", width, height); |
|
|
DEBUG2("param width/height", dec->width, dec->height); |
|
636 |
return -1; |
return -1; |
637 |
} |
} |
638 |
|
resize = 1; |
639 |
|
dec->width = width; |
640 |
|
dec->height = height; |
641 |
|
} |
642 |
} |
} |
643 |
|
|
644 |
if ((dec->interlacing = BitstreamGetBit(bs))) |
dec->interlacing = BitstreamGetBit(bs); |
645 |
|
DPRINTF(XVID_DEBUG_HEADER, "interlacing %i\n", dec->interlacing); |
646 |
|
|
647 |
|
if (!BitstreamGetBit(bs)) /* obmc_disable */ |
648 |
{ |
{ |
649 |
DEBUG("vol: interlacing"); |
DPRINTF(XVID_DEBUG_ERROR, "obmc_disabled==false not supported\n"); |
650 |
|
/* TODO */ |
651 |
|
/* fucking divx4.02 has this enabled */ |
652 |
} |
} |
653 |
|
|
654 |
if (!BitstreamGetBit(bs)) // obmc_disable |
dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); /* sprite_enable */ |
655 |
|
|
656 |
|
if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC) |
657 |
{ |
{ |
658 |
DEBUG("IGNORED/TODO: !obmc_disable"); |
int low_latency_sprite_enable; |
|
// TODO |
|
|
// fucking divx4.02 has this enabled |
|
|
} |
|
659 |
|
|
660 |
if (BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2))) // sprite_enable |
if (dec->sprite_enable != SPRITE_GMC) |
661 |
{ |
{ |
662 |
DEBUG("sprite_enable; not supported"); |
int sprite_width; |
663 |
return -1; |
int sprite_height; |
664 |
|
int sprite_left_coord; |
665 |
|
int sprite_top_coord; |
666 |
|
sprite_width = BitstreamGetBits(bs, 13); /* sprite_width */ |
667 |
|
READ_MARKER(); |
668 |
|
sprite_height = BitstreamGetBits(bs, 13); /* sprite_height */ |
669 |
|
READ_MARKER(); |
670 |
|
sprite_left_coord = BitstreamGetBits(bs, 13); /* sprite_left_coordinate */ |
671 |
|
READ_MARKER(); |
672 |
|
sprite_top_coord = BitstreamGetBits(bs, 13); /* sprite_top_coordinate */ |
673 |
|
READ_MARKER(); |
674 |
} |
} |
675 |
|
dec->sprite_warping_points = BitstreamGetBits(bs, 6); /* no_of_sprite_warping_points */ |
676 |
if (vol_ver_id != 1 && dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); /* sprite_warping_accuracy */ |
677 |
|
dec->sprite_brightness_change = BitstreamGetBits(bs, 1); /* brightness_change */ |
678 |
|
if (dec->sprite_enable != SPRITE_GMC) |
679 |
{ |
{ |
680 |
BitstreamSkip(bs, 1); // sadct_disable |
low_latency_sprite_enable = BitstreamGetBits(bs, 1); /* low_latency_sprite_enable */ |
681 |
|
} |
682 |
} |
} |
683 |
|
|
684 |
if (BitstreamGetBit(bs)) // not_8_bit |
if (vol_ver_id != 1 && |
685 |
{ |
dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
686 |
DEBUG("+ not_8_bit [IGNORED/TODO]"); |
BitstreamSkip(bs, 1); /* sadct_disable */ |
|
dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision |
|
|
BitstreamSkip(bs, 4); // bits_per_pixel |
|
687 |
} |
} |
688 |
else |
|
689 |
|
if (BitstreamGetBit(bs)) /* not_8_bit */ |
690 |
{ |
{ |
691 |
|
DPRINTF(XVID_DEBUG_HEADER, "not_8_bit==true (ignored)\n"); |
692 |
|
dec->quant_bits = BitstreamGetBits(bs, 4); /* quant_precision */ |
693 |
|
BitstreamSkip(bs, 4); /* bits_per_pixel */ |
694 |
|
} else { |
695 |
dec->quant_bits = 5; |
dec->quant_bits = 5; |
696 |
} |
} |
697 |
|
|
698 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
699 |
{ |
BitstreamSkip(bs, 1); /* no_gray_quant_update */ |
700 |
BitstreamSkip(bs, 1); // no_gray_quant_update |
BitstreamSkip(bs, 1); /* composition_method */ |
701 |
BitstreamSkip(bs, 1); // composition_method |
BitstreamSkip(bs, 1); /* linear_composition */ |
|
BitstreamSkip(bs, 1); // linear_composition |
|
702 |
} |
} |
703 |
|
|
704 |
dec->quant_type = BitstreamGetBit(bs); // quant_type |
dec->quant_type = BitstreamGetBit(bs); /* quant_type */ |
705 |
// DEBUG1("**** quant_type", dec->quant_type); |
DPRINTF(XVID_DEBUG_HEADER, "quant_type %i\n", dec->quant_type); |
706 |
|
|
707 |
if (dec->quant_type) |
if (dec->quant_type) { |
708 |
{ |
if (BitstreamGetBit(bs)) /* load_intra_quant_mat */ |
|
if (BitstreamGetBit(bs)) // load_intra_quant_mat |
|
709 |
{ |
{ |
710 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
711 |
|
|
712 |
|
DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat\n"); |
713 |
|
|
714 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
715 |
set_intra_matrix(matrix); |
set_intra_matrix(matrix); |
716 |
} |
} else |
|
else |
|
717 |
set_intra_matrix(get_default_intra_matrix()); |
set_intra_matrix(get_default_intra_matrix()); |
718 |
|
|
719 |
if (BitstreamGetBit(bs)) // load_inter_quant_mat |
if (BitstreamGetBit(bs)) /* load_inter_quant_mat */ |
720 |
{ |
{ |
721 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
722 |
|
|
723 |
|
DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat\n"); |
724 |
|
|
725 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
726 |
set_inter_matrix(matrix); |
set_inter_matrix(matrix); |
727 |
} |
} else |
|
else |
|
728 |
set_inter_matrix(get_default_inter_matrix()); |
set_inter_matrix(get_default_inter_matrix()); |
729 |
|
|
730 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
731 |
{ |
DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported\n"); |
|
// TODO |
|
|
DEBUG("TODO: grayscale matrix stuff"); |
|
732 |
return -1; |
return -1; |
733 |
} |
} |
734 |
|
|
735 |
} |
} |
736 |
|
|
737 |
|
|
738 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
739 |
{ |
dec->quarterpel = BitstreamGetBit(bs); /* quarter_sample */ |
740 |
dec->quarterpel = BitstreamGetBit(bs); // quarter_sampe |
DPRINTF(XVID_DEBUG_HEADER,"quarterpel %i\n", dec->quarterpel); |
|
if (dec->quarterpel) |
|
|
{ |
|
|
DEBUG("IGNORED/TODO: quarter_sample"); |
|
|
} |
|
741 |
} |
} |
742 |
else |
else |
|
{ |
|
743 |
dec->quarterpel = 0; |
dec->quarterpel = 0; |
|
} |
|
744 |
|
|
|
if (!BitstreamGetBit(bs)) // complexity_estimation_disable |
|
|
{ |
|
|
DEBUG("TODO: complexity_estimation header"); |
|
|
// TODO |
|
|
return -1; |
|
|
} |
|
745 |
|
|
746 |
if (!BitstreamGetBit(bs)) // resync_marker_disable |
dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */ |
747 |
|
if (!dec->complexity_estimation_disable) |
748 |
{ |
{ |
749 |
DEBUG("IGNORED/TODO: !resync_marker_disable"); |
read_vol_complexity_estimation_header(bs, dec); |
|
// TODO |
|
750 |
} |
} |
751 |
|
|
752 |
if (BitstreamGetBit(bs)) // data_partitioned |
BitstreamSkip(bs, 1); /* resync_marker_disable */ |
753 |
|
|
754 |
|
if (BitstreamGetBit(bs)) /* data_partitioned */ |
755 |
{ |
{ |
756 |
DEBUG("+ data_partitioned"); |
DPRINTF(XVID_DEBUG_ERROR, "data_partitioned not supported\n"); |
757 |
BitstreamSkip(bs, 1); // reversible_vlc |
BitstreamSkip(bs, 1); /* reversible_vlc */ |
758 |
} |
} |
759 |
|
|
760 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
761 |
{ |
dec->newpred_enable = BitstreamGetBit(bs); |
762 |
if (BitstreamGetBit(bs)) // newpred_enable |
if (dec->newpred_enable) /* newpred_enable */ |
763 |
{ |
{ |
764 |
DEBUG("+ newpred_enable"); |
DPRINTF(XVID_DEBUG_HEADER, "+ newpred_enable\n"); |
765 |
BitstreamSkip(bs, 2); // requested_upstream_message_type |
BitstreamSkip(bs, 2); /* requested_upstream_message_type */ |
766 |
BitstreamSkip(bs, 1); // newpred_segment_type |
BitstreamSkip(bs, 1); /* newpred_segment_type */ |
767 |
} |
} |
768 |
if (BitstreamGetBit(bs)) // reduced_resolution_vop_enable |
dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */ |
769 |
{ |
DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution_enable %i\n", dec->reduced_resolution_enable); |
|
DEBUG("TODO: reduced_resolution_vop_enable"); |
|
|
// TODO |
|
|
return -1; |
|
770 |
} |
} |
771 |
|
else |
772 |
|
{ |
773 |
|
dec->newpred_enable = 0; |
774 |
|
dec->reduced_resolution_enable = 0; |
775 |
} |
} |
776 |
|
|
777 |
if ((dec->scalability=BitstreamGetBit(bs))) // scalability |
dec->scalability = BitstreamGetBit(bs); /* scalability */ |
778 |
|
if (dec->scalability) |
779 |
{ |
{ |
780 |
// TODO |
DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
781 |
DEBUG("TODO: scalability"); |
BitstreamSkip(bs, 1); /* hierarchy_type */ |
782 |
return -1; |
BitstreamSkip(bs, 4); /* ref_layer_id */ |
783 |
|
BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */ |
784 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ |
785 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ |
786 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ |
787 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ |
788 |
|
BitstreamSkip(bs, 1); /* enhancement_type */ |
789 |
|
if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) { |
790 |
|
BitstreamSkip(bs, 1); /* use_ref_shape */ |
791 |
|
BitstreamSkip(bs, 1); /* use_ref_texture */ |
792 |
|
BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */ |
793 |
|
BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */ |
794 |
|
BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */ |
795 |
|
BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */ |
796 |
} |
} |
797 |
|
return -1; |
798 |
} |
} |
799 |
else // dec->shape == BINARY_ONLY |
} else /* dec->shape == BINARY_ONLY */ |
800 |
{ |
{ |
801 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
802 |
{ |
dec->scalability = BitstreamGetBit(bs); /* scalability */ |
803 |
if (BitstreamGetBit(bs)) // scalability |
if (dec->scalability) |
804 |
{ |
{ |
805 |
// TODO |
DPRINTF(XVID_DEBUG_ERROR, "scalability not supported\n"); |
806 |
DEBUG("TODO: scalability"); |
BitstreamSkip(bs, 4); /* ref_layer_id */ |
807 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_n */ |
808 |
|
BitstreamSkip(bs, 5); /* hor_sampling_factor_m */ |
809 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_n */ |
810 |
|
BitstreamSkip(bs, 5); /* vert_sampling_factor_m */ |
811 |
return -1; |
return -1; |
812 |
} |
} |
813 |
} |
} |
814 |
BitstreamSkip(bs, 1); // resync_marker_disable |
BitstreamSkip(bs, 1); /* resync_marker_disable */ |
815 |
|
|
816 |
} |
} |
817 |
|
|
818 |
} |
return (resize ? -3 : -2 ); /* VOL */ |
819 |
else if (start_code == GRPOFVOP_START_CODE) |
|
820 |
{ |
} else if (start_code == GRPOFVOP_START_CODE) { |
821 |
// DEBUG("group_of_vop"); |
|
822 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<group_of_vop>\n"); |
823 |
|
|
824 |
BitstreamSkip(bs, 32); |
BitstreamSkip(bs, 32); |
825 |
{ |
{ |
826 |
int hours, minutes, seconds; |
int hours, minutes, seconds; |
827 |
|
|
828 |
hours = BitstreamGetBits(bs, 5); |
hours = BitstreamGetBits(bs, 5); |
829 |
minutes = BitstreamGetBits(bs, 6); |
minutes = BitstreamGetBits(bs, 6); |
830 |
READ_MARKER(); |
READ_MARKER(); |
831 |
seconds = BitstreamGetBits(bs, 6); |
seconds = BitstreamGetBits(bs, 6); |
832 |
// DEBUG3("hms", hours, minutes, seconds); |
|
833 |
} |
DPRINTF(XVID_DEBUG_HEADER, "time %ih%im%is\n", hours,minutes,seconds); |
|
BitstreamSkip(bs, 1); // closed_gov |
|
|
BitstreamSkip(bs, 1); // broken_link |
|
834 |
} |
} |
835 |
else if (start_code == VOP_START_CODE) |
BitstreamSkip(bs, 1); /* closed_gov */ |
836 |
{ |
BitstreamSkip(bs, 1); /* broken_link */ |
|
// DEBUG("vop_start_code"); |
|
|
BitstreamSkip(bs, 32); // vop_start_code |
|
837 |
|
|
838 |
coding_type = BitstreamGetBits(bs, 2); // vop_coding_type |
} else if (start_code == VOP_START_CODE) { |
|
//DEBUG1("coding_type", coding_type); |
|
839 |
|
|
840 |
// *************************** for decode B-frame time *********************** |
DPRINTF(XVID_DEBUG_STARTCODE, "<vop>\n"); |
841 |
while (BitstreamGetBit(bs) != 0) // time_base |
|
842 |
|
BitstreamSkip(bs, 32); /* vop_start_code */ |
843 |
|
|
844 |
|
coding_type = BitstreamGetBits(bs, 2); /* vop_coding_type */ |
845 |
|
DPRINTF(XVID_DEBUG_HEADER, "coding_type %i\n", coding_type); |
846 |
|
|
847 |
|
/*********************** for decode B-frame time ***********************/ |
848 |
|
while (BitstreamGetBit(bs) != 0) /* time_base */ |
849 |
time_incr++; |
time_incr++; |
850 |
|
|
851 |
READ_MARKER(); |
READ_MARKER(); |
852 |
|
|
853 |
//DEBUG1("time_inc_bits", dec->time_inc_bits); |
if (dec->time_inc_bits) { |
854 |
//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 |
|
855 |
} |
} |
856 |
|
|
857 |
|
DPRINTF(XVID_DEBUG_HEADER, "time_base %i\n", time_incr); |
858 |
|
DPRINTF(XVID_DEBUG_HEADER, "time_increment %i\n", time_increment); |
859 |
|
|
860 |
|
DPRINTF(XVID_DEBUG_TIMECODE, "%c %i:%i\n", |
861 |
|
coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S', |
862 |
|
time_incr, time_increment); |
863 |
|
|
864 |
if(coding_type != B_VOP){ |
if(coding_type != B_VOP){ |
865 |
dec->last_time_base = dec->time_base; |
dec->last_time_base = dec->time_base; |
866 |
dec->time_base += time_incr; |
dec->time_base += time_incr; |
867 |
dec->time = dec->time_base*time_increment_resolution + time_increment; |
dec->time = time_increment; |
868 |
dec->time_pp= (uint32_t)(dec->time - dec->last_non_b_time); |
|
869 |
|
#if 0 |
870 |
|
dec->time_base * dec->time_inc_resolution + |
871 |
|
time_increment; |
872 |
|
#endif |
873 |
|
dec->time_pp = (uint32_t) |
874 |
|
(dec->time_inc_resolution + dec->time - dec->last_non_b_time)%dec->time_inc_resolution; |
875 |
dec->last_non_b_time= dec->time; |
dec->last_non_b_time= dec->time; |
876 |
}else{ |
}else{ |
877 |
dec->time = (dec->last_time_base + time_incr)*time_increment_resolution + time_increment; |
dec->time = time_increment; |
878 |
dec->time_bp= (uint32_t)(dec->last_non_b_time - dec->time); |
#if 0 |
879 |
|
(dec->last_time_base + |
880 |
|
time_incr) * dec->time_inc_resolution + time_increment; |
881 |
|
#endif |
882 |
|
dec->time_bp = (uint32_t) |
883 |
|
(dec->time_inc_resolution + dec->last_non_b_time - dec->time)%dec->time_inc_resolution; |
884 |
} |
} |
885 |
//DEBUG1("time_increment=",time_increment); |
DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i\n", dec->time_pp); |
886 |
|
DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i\n", dec->time_bp); |
887 |
|
|
888 |
READ_MARKER(); |
READ_MARKER(); |
889 |
|
|
890 |
if (!BitstreamGetBit(bs)) // vop_coded |
if (!BitstreamGetBit(bs)) /* vop_coded */ |
891 |
{ |
{ |
892 |
|
DPRINTF(XVID_DEBUG_HEADER, "vop_coded==false\n"); |
893 |
return N_VOP; |
return N_VOP; |
894 |
} |
} |
895 |
|
|
896 |
/* if (newpred_enable) |
if (dec->newpred_enable) |
897 |
{ |
{ |
898 |
} |
int vop_id; |
899 |
*/ |
int vop_id_for_prediction; |
900 |
|
|
901 |
// fix a little bug by MinChen <chenm002@163.com> |
vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
902 |
if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && (coding_type == P_VOP)) |
DPRINTF(XVID_DEBUG_HEADER, "vop_id %i\n", vop_id); |
903 |
|
if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */ |
904 |
{ |
{ |
905 |
*rounding = BitstreamGetBit(bs); // rounding_type |
vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15)); |
906 |
//DEBUG1("rounding", *rounding); |
DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i\n", vop_id_for_prediction); |
907 |
|
} |
908 |
|
READ_MARKER(); |
909 |
} |
} |
910 |
|
|
911 |
/* if (reduced_resolution_enable) |
|
912 |
{ |
|
913 |
|
/* fix a little bug by MinChen <chenm002@163.com> */ |
914 |
|
if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
915 |
|
( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) { |
916 |
|
*rounding = BitstreamGetBit(bs); /* rounding_type */ |
917 |
|
DPRINTF(XVID_DEBUG_HEADER, "rounding %i\n", *rounding); |
918 |
} |
} |
|
*/ |
|
919 |
|
|
920 |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
if (dec->reduced_resolution_enable && |
921 |
|
dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR && |
922 |
|
(coding_type == P_VOP || coding_type == I_VOP)) { |
923 |
|
|
924 |
|
*reduced_resolution = BitstreamGetBit(bs); |
925 |
|
DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution %i\n", *reduced_resolution); |
926 |
|
} |
927 |
|
else |
928 |
{ |
{ |
929 |
|
*reduced_resolution = 0; |
930 |
|
} |
931 |
|
|
932 |
|
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
933 |
|
if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) { |
934 |
|
|
935 |
uint32_t width, height; |
uint32_t width, height; |
936 |
uint32_t horiz_mc_ref, vert_mc_ref; |
uint32_t horiz_mc_ref, vert_mc_ref; |
937 |
|
|
944 |
vert_mc_ref = BitstreamGetBits(bs, 13); |
vert_mc_ref = BitstreamGetBits(bs, 13); |
945 |
READ_MARKER(); |
READ_MARKER(); |
946 |
|
|
947 |
// DEBUG2("vop_width/height", width, height); |
DPRINTF(XVID_DEBUG_HEADER, "width %i\n", width); |
948 |
// DEBUG2("ref ", horiz_mc_ref, vert_mc_ref); |
DPRINTF(XVID_DEBUG_HEADER, "height %i\n", height); |
949 |
|
DPRINTF(XVID_DEBUG_HEADER, "horiz_mc_ref %i\n", horiz_mc_ref); |
950 |
|
DPRINTF(XVID_DEBUG_HEADER, "vert_mc_ref %i\n", vert_mc_ref); |
951 |
|
} |
952 |
|
|
953 |
BitstreamSkip(bs, 1); // change_conv_ratio_disable |
BitstreamSkip(bs, 1); /* change_conv_ratio_disable */ |
954 |
if (BitstreamGetBit(bs)) // vop_constant_alpha |
if (BitstreamGetBit(bs)) /* vop_constant_alpha */ |
955 |
{ |
{ |
956 |
BitstreamSkip(bs, 8); // vop_constant_alpha_value |
BitstreamSkip(bs, 8); /* vop_constant_alpha_value */ |
957 |
} |
} |
958 |
} |
} |
959 |
|
|
960 |
|
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
961 |
|
|
962 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
if (!dec->complexity_estimation_disable) |
963 |
{ |
{ |
964 |
// intra_dc_vlc_threshold |
read_vop_complexity_estimation_header(bs, dec, coding_type); |
965 |
*intra_dc_threshold = intra_dc_threshold_table[ BitstreamGetBits(bs,3) ]; |
} |
966 |
|
|
967 |
if (dec->interlacing) |
/* intra_dc_vlc_threshold */ |
968 |
{ |
*intra_dc_threshold = |
969 |
if ((dec->top_field_first = BitstreamGetBit(bs))) |
intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; |
970 |
|
|
971 |
|
dec->top_field_first = 0; |
972 |
|
dec->alternate_vertical_scan = 0; |
973 |
|
|
974 |
|
if (dec->interlacing) { |
975 |
|
dec->top_field_first = BitstreamGetBit(bs); |
976 |
|
DPRINTF(XVID_DEBUG_HEADER, "interlace top_field_first %i\n", dec->top_field_first); |
977 |
|
dec->alternate_vertical_scan = BitstreamGetBit(bs); |
978 |
|
DPRINTF(XVID_DEBUG_HEADER, "interlace alternate_vertical_scan %i\n", dec->alternate_vertical_scan); |
979 |
|
|
980 |
|
} |
981 |
|
} |
982 |
|
|
983 |
|
if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) { |
984 |
|
|
985 |
|
int i; |
986 |
|
|
987 |
|
for (i = 0 ; i < dec->sprite_warping_points; i++) |
988 |
{ |
{ |
989 |
DEBUG("vop: top_field_first"); |
int length; |
990 |
|
int x = 0, y = 0; |
991 |
|
|
992 |
|
/* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */ |
993 |
|
length = bs_get_spritetrajectory(bs); |
994 |
|
if(length){ |
995 |
|
x= BitstreamGetBits(bs, length); |
996 |
|
if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/ |
997 |
|
x = - (x ^ ((1 << length) - 1)); |
998 |
|
} |
999 |
|
READ_MARKER(); |
1000 |
|
|
1001 |
|
length = bs_get_spritetrajectory(bs); |
1002 |
|
if(length){ |
1003 |
|
y = BitstreamGetBits(bs, length); |
1004 |
|
if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/ |
1005 |
|
y = - (y ^ ((1 << length) - 1)); |
1006 |
|
} |
1007 |
|
READ_MARKER(); |
1008 |
|
|
1009 |
|
gmc_warp->duv[i].x = x; |
1010 |
|
gmc_warp->duv[i].y = y; |
1011 |
|
|
1012 |
|
DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", i, x, y); |
1013 |
} |
} |
1014 |
if ((dec->alternate_vertical_scan = BitstreamGetBit(bs))) |
|
1015 |
|
if (dec->sprite_brightness_change) |
1016 |
{ |
{ |
1017 |
DEBUG("vop: alternate_vertical_scan"); |
/* XXX: brightness_change_factor() */ |
1018 |
} |
} |
1019 |
|
if (dec->sprite_enable == SPRITE_STATIC) |
1020 |
|
{ |
1021 |
|
/* XXX: todo */ |
1022 |
} |
} |
1023 |
|
|
1024 |
} |
} |
1025 |
|
|
1026 |
if((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) // vop_quant |
if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) /* vop_quant */ |
1027 |
*quant = 1; |
*quant = 1; |
1028 |
|
DPRINTF(XVID_DEBUG_HEADER, "quant %i\n", *quant); |
1029 |
|
|
1030 |
//DEBUG1("quant", *quant); |
if (coding_type != I_VOP) { |
1031 |
|
*fcode_forward = BitstreamGetBits(bs, 3); /* fcode_forward */ |
1032 |
if (coding_type != I_VOP) |
DPRINTF(XVID_DEBUG_HEADER, "fcode_forward %i\n", *fcode_forward); |
|
{ |
|
|
*fcode_forward = BitstreamGetBits(bs, 3); // fcode_forward |
|
1033 |
} |
} |
1034 |
|
|
1035 |
if (coding_type == B_VOP) |
if (coding_type == B_VOP) { |
1036 |
{ |
*fcode_backward = BitstreamGetBits(bs, 3); /* fcode_backward */ |
1037 |
*fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward |
DPRINTF(XVID_DEBUG_HEADER, "fcode_backward %i\n", *fcode_backward); |
1038 |
} |
} |
1039 |
if (!dec->scalability){ |
if (!dec->scalability){ |
1040 |
if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && (coding_type != I_VOP)){ |
if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && |
1041 |
BitstreamSkip(bs, 1); // vop_shape_coding_type |
(coding_type != I_VOP)) { |
1042 |
|
BitstreamSkip(bs, 1); /* vop_shape_coding_type */ |
1043 |
} |
} |
1044 |
} |
} |
1045 |
return coding_type; |
return coding_type; |
1046 |
|
|
1047 |
|
} else if (start_code == USERDATA_START_CODE) { |
1048 |
|
char tmp[256]; |
1049 |
|
int i, version, build; |
1050 |
|
char packed; |
1051 |
|
|
1052 |
|
BitstreamSkip(bs, 32); /* user_data_start_code */ |
1053 |
|
|
1054 |
|
tmp[0] = BitstreamShowBits(bs, 8); |
1055 |
|
|
1056 |
|
for(i = 1; i < 256; i++){ |
1057 |
|
tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF); |
1058 |
|
|
1059 |
|
if(tmp[i] == 0) |
1060 |
|
break; |
1061 |
|
|
1062 |
|
BitstreamSkip(bs, 8); |
1063 |
} |
} |
1064 |
else if (start_code == USERDATA_START_CODE) |
|
1065 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s\n", tmp); |
1066 |
|
|
1067 |
|
/* divx detection */ |
1068 |
|
i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed); |
1069 |
|
if (i < 2) |
1070 |
|
i = sscanf(tmp, "DivX%db%d%c", &version, &build, &packed); |
1071 |
|
|
1072 |
|
if (i >= 2) |
1073 |
{ |
{ |
1074 |
// DEBUG("user_data"); |
dec->packed_mode = (i == 3 && packed == 'p'); |
1075 |
BitstreamSkip(bs, 32); // user_data_start_code |
DPRINTF(XVID_DEBUG_HEADER, "divx version=%i, build=%i packed=%i\n", |
1076 |
|
version, build, dec->packed_mode); |
1077 |
} |
} |
1078 |
else // start_code == ? |
|
1079 |
{ |
} else /* start_code == ? */ |
|
if (BitstreamShowBits(bs, 24) == 0x000001) |
|
1080 |
{ |
{ |
1081 |
DEBUG1("*** WARNING: unknown start_code", BitstreamShowBits(bs, 32)); |
if (BitstreamShowBits(bs, 24) == 0x000001) { |
1082 |
|
DPRINTF(XVID_DEBUG_STARTCODE, "<unknown: %x>\n", BitstreamShowBits(bs, 32)); |
1083 |
} |
} |
1084 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 8); |
1085 |
} |
} |
1086 |
} |
} |
1087 |
while ((BitstreamPos(bs) >> 3) < bs->length); |
while ((BitstreamPos(bs) >> 3) < bs->length); |
1088 |
|
|
1089 |
DEBUG("*** WARNING: no vop_start_code found"); |
#if 0 |
1090 |
|
DPRINTF("*** WARNING: no vop_start_code found"); |
1091 |
|
#endif |
1092 |
return -1; /* ignore it */ |
return -1; /* ignore it */ |
1093 |
} |
} |
1094 |
|
|
1095 |
|
|
1096 |
/* write custom quant matrix */ |
/* write custom quant matrix */ |
1097 |
|
|
1098 |
static void bs_put_matrix(Bitstream * bs, const int16_t *matrix) |
static void |
1099 |
|
bs_put_matrix(Bitstream * bs, |
1100 |
|
const int16_t * matrix) |
1101 |
{ |
{ |
1102 |
int i, j; |
int i, j; |
1103 |
const int last = matrix[scan_tables[0][63]]; |
const int last = matrix[scan_tables[0][63]]; |
1104 |
|
|
1105 |
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--); |
1106 |
|
|
1107 |
for (i = 0; i <= j; i++) |
for (i = 0; i <= j; i++) { |
|
{ |
|
1108 |
BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
1109 |
} |
} |
1110 |
|
|
1111 |
if (j < 63) |
if (j < 63) { |
|
{ |
|
1112 |
BitstreamPutBits(bs, 0, 8); |
BitstreamPutBits(bs, 0, 8); |
1113 |
} |
} |
1114 |
} |
} |
1117 |
/* |
/* |
1118 |
write vol header |
write vol header |
1119 |
*/ |
*/ |
1120 |
void BitstreamWriteVolHeader(Bitstream * const bs, |
void |
1121 |
const MBParam * pParam, const FRAMEINFO * frame) |
BitstreamWriteVolHeader(Bitstream * const bs, |
1122 |
|
const MBParam * pParam) |
1123 |
{ |
{ |
1124 |
// video object_start_code & vo_id |
static const unsigned int vo_id = 0; |
1125 |
|
static const unsigned int vol_id = 0; |
1126 |
|
int vol_ver_id=1; |
1127 |
|
int vol_type_ind=VIDOBJLAY_TYPE_SIMPLE; |
1128 |
|
|
1129 |
|
if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
1130 |
|
(pParam->vol_flags & XVID_VOL_GMC) || |
1131 |
|
(pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
1132 |
|
vol_ver_id = 2; |
1133 |
|
|
1134 |
|
if ((pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) { |
1135 |
|
vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE; |
1136 |
|
} |
1137 |
|
|
1138 |
|
if ((pParam->vol_flags & XVID_VOL_QUARTERPEL) || |
1139 |
|
(pParam->vol_flags & XVID_VOL_GMC)) { |
1140 |
|
vol_type_ind = VIDOBJLAY_TYPE_ASP; |
1141 |
|
} |
1142 |
|
|
1143 |
|
/* visual_object_sequence_start_code */ |
1144 |
|
#if 0 |
1145 |
BitstreamPad(bs); |
BitstreamPad(bs); |
1146 |
BitstreamPutBits(bs, VO_START_CODE, 27); |
#endif |
|
BitstreamPutBits(bs, 0, 5); |
|
1147 |
|
|
1148 |
// video_object_layer_start_code & vol_id |
/* |
1149 |
BitstreamPutBits(bs, VOL_START_CODE, 28); |
* no padding here, anymore. You have to make sure that you are |
1150 |
BitstreamPutBits(bs, 0, 4); |
* byte aligned, and that always 1-8 padding bits have been written |
1151 |
|
*/ |
1152 |
BitstreamPutBit(bs, 0); // random_accessible_vol |
|
1153 |
BitstreamPutBits(bs, 0, 8); // video_object_type_indication |
if (pParam->profile) { |
1154 |
BitstreamPutBit(bs, 0); // is_object_layer_identified (0=not given) |
BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32); |
1155 |
BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1) |
BitstreamPutBits(bs, pParam->profile, 8); |
1156 |
BitstreamPutBit(bs, 0); // vol_control_parameters (0=not given) |
} |
1157 |
BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular) |
|
1158 |
|
/* visual_object_start_code */ |
1159 |
|
BitstreamPad(bs); |
1160 |
|
BitstreamPutBits(bs, VISOBJ_START_CODE, 32); |
1161 |
|
BitstreamPutBits(bs, 0, 1); /* is_visual_object_identifier */ |
1162 |
|
BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); /* visual_object_type */ |
1163 |
|
|
1164 |
|
/* video object_start_code & vo_id */ |
1165 |
|
BitstreamPad(bs); |
1166 |
|
BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32); |
1167 |
|
|
1168 |
|
/* video_object_layer_start_code & vol_id */ |
1169 |
|
BitstreamPad(bs); |
1170 |
|
BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32); |
1171 |
|
|
1172 |
|
BitstreamPutBit(bs, 0); /* random_accessible_vol */ |
1173 |
|
BitstreamPutBits(bs, vol_type_ind, 8); /* video_object_type_indication */ |
1174 |
|
|
1175 |
|
if (vol_ver_id == 1) |
1176 |
|
{ |
1177 |
|
BitstreamPutBit(bs, 0); /* is_object_layer_identified (0=not given) */ |
1178 |
|
} |
1179 |
|
else |
1180 |
|
{ |
1181 |
|
BitstreamPutBit(bs, 1); /* is_object_layer_identified */ |
1182 |
|
BitstreamPutBits(bs, vol_ver_id, 4); /* vol_ver_id == 2 */ |
1183 |
|
BitstreamPutBits(bs, 4, 3); /* vol_ver_priority (1==lowest, 7==highest) ?? */ |
1184 |
|
} |
1185 |
|
|
1186 |
|
BitstreamPutBits(bs, 1, 4); /* aspect_ratio_info (1=1:1) */ |
1187 |
|
|
1188 |
|
BitstreamPutBit(bs, 1); /* vol_control_parameters */ |
1189 |
|
BitstreamPutBits(bs, 1, 2); /* chroma_format 1="4:2:0" */ |
1190 |
|
|
1191 |
|
if (pParam->max_bframes > 0) { |
1192 |
|
BitstreamPutBit(bs, 0); /* low_delay */ |
1193 |
|
} else |
1194 |
|
{ |
1195 |
|
BitstreamPutBit(bs, 1); /* low_delay */ |
1196 |
|
} |
1197 |
|
BitstreamPutBit(bs, 0); /* vbv_parameters (0=not given) */ |
1198 |
|
|
1199 |
|
BitstreamPutBits(bs, 0, 2); /* video_object_layer_shape (0=rectangular) */ |
1200 |
|
|
1201 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1202 |
|
|
1203 |
/* time_increment_resolution; ignored by current decore versions |
/* |
1204 |
eg. 2fps res=2 inc=1 |
* time_inc_resolution; ignored by current decore versions |
1205 |
25fps res=25 inc=1 |
* eg. 2fps res=2 inc=1 |
1206 |
29.97fps res=30000 inc=1001 |
* 25fps res=25 inc=1 |
1207 |
|
* 29.97fps res=30000 inc=1001 |
1208 |
*/ |
*/ |
|
#ifdef BFRAMES |
|
1209 |
BitstreamPutBits(bs, pParam->fbase, 16); |
BitstreamPutBits(bs, pParam->fbase, 16); |
|
#else |
|
|
BitstreamPutBits(bs, 2, 16); |
|
|
#endif |
|
1210 |
|
|
1211 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1212 |
|
|
1213 |
// fixed_vop_rate |
if (pParam->fincr>0) { |
1214 |
BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 1); /* fixed_vop_rate = 1 */ |
1215 |
|
BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); /* fixed_vop_time_increment */ |
1216 |
// fixed_time_increment: value=nth_of_sec, nbits = log2(resolution) |
}else{ |
1217 |
// BitstreamPutBits(bs, 0, 15); |
BitstreamPutBit(bs, 0); /* fixed_vop_rate = 0 */ |
1218 |
|
} |
1219 |
|
|
1220 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1221 |
BitstreamPutBits(bs, pParam->width, 13); // width |
BitstreamPutBits(bs, pParam->width, 13); /* width */ |
1222 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1223 |
BitstreamPutBits(bs, pParam->height, 13); // height |
BitstreamPutBits(bs, pParam->height, 13); /* height */ |
1224 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1225 |
|
|
1226 |
BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); // interlace |
BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_INTERLACING); /* interlace */ |
1227 |
BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) |
BitstreamPutBit(bs, 1); /* obmc_disable (overlapped block motion compensation) */ |
|
BitstreamPutBit(bs, 0); // sprite_enable |
|
|
BitstreamPutBit(bs, 0); // not_in_bit |
|
1228 |
|
|
1229 |
// quant_type 0=h.263 1=mpeg4(quantizer tables) |
if (vol_ver_id != 1) |
1230 |
BitstreamPutBit(bs, pParam->m_quant_type); |
{ if ((pParam->vol_flags & XVID_VOL_GMC)) |
1231 |
|
{ BitstreamPutBits(bs, 2, 2); /* sprite_enable=='GMC' */ |
1232 |
|
BitstreamPutBits(bs, 2, 6); /* no_of_sprite_warping_points */ |
1233 |
|
BitstreamPutBits(bs, 3, 2); /* sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16 */ |
1234 |
|
BitstreamPutBit(bs, 0); /* sprite_brightness_change (not supported) */ |
1235 |
|
|
1236 |
if (pParam->m_quant_type) |
/* |
1237 |
{ |
* currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3 |
1238 |
BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
* for DivX5 compatability |
1239 |
if (get_intra_matrix_status()) |
*/ |
1240 |
{ |
|
1241 |
|
} else |
1242 |
|
BitstreamPutBits(bs, 0, 2); /* sprite_enable==off */ |
1243 |
|
} |
1244 |
|
else |
1245 |
|
BitstreamPutBit(bs, 0); /* sprite_enable==off */ |
1246 |
|
|
1247 |
|
BitstreamPutBit(bs, 0); /* not_8_bit */ |
1248 |
|
|
1249 |
|
/* quant_type 0=h.263 1=mpeg4(quantizer tables) */ |
1250 |
|
BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT); |
1251 |
|
|
1252 |
|
if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) { |
1253 |
|
BitstreamPutBit(bs, get_intra_matrix_status()); /* load_intra_quant_mat */ |
1254 |
|
if (get_intra_matrix_status()) { |
1255 |
bs_put_matrix(bs, get_intra_matrix()); |
bs_put_matrix(bs, get_intra_matrix()); |
1256 |
} |
} |
1257 |
|
|
1258 |
BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat |
BitstreamPutBit(bs, get_inter_matrix_status()); /* load_inter_quant_mat */ |
1259 |
if (get_inter_matrix_status()) |
if (get_inter_matrix_status()) { |
|
{ |
|
1260 |
bs_put_matrix(bs, get_inter_matrix()); |
bs_put_matrix(bs, get_inter_matrix()); |
1261 |
} |
} |
1262 |
|
|
1263 |
} |
} |
1264 |
|
|
1265 |
BitstreamPutBit(bs, 1); // complexity_estimation_disable |
if (vol_ver_id != 1) { |
1266 |
BitstreamPutBit(bs, 1); // resync_marker_disable |
if ((pParam->vol_flags & XVID_VOL_QUARTERPEL)) |
1267 |
BitstreamPutBit(bs, 0); // data_partitioned |
BitstreamPutBit(bs, 1); /* quarterpel */ |
1268 |
BitstreamPutBit(bs, 0); // scalability |
else |
1269 |
|
BitstreamPutBit(bs, 0); /* no quarterpel */ |
1270 |
|
} |
1271 |
|
|
1272 |
|
BitstreamPutBit(bs, 1); /* complexity_estimation_disable */ |
1273 |
|
BitstreamPutBit(bs, 1); /* resync_marker_disable */ |
1274 |
|
BitstreamPutBit(bs, 0); /* data_partitioned */ |
1275 |
|
|
1276 |
|
if (vol_ver_id != 1) |
1277 |
|
{ |
1278 |
|
BitstreamPutBit(bs, 0); /* newpred_enable */ |
1279 |
|
|
1280 |
|
BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0); |
1281 |
|
/* reduced_resolution_vop_enabled */ |
1282 |
|
} |
1283 |
|
|
1284 |
|
BitstreamPutBit(bs, 0); /* scalability */ |
1285 |
|
|
1286 |
|
/* fake divx5 id, to ensure compatibility with divx5 decoder */ |
1287 |
|
#define DIVX5_ID "DivX000b000p" |
1288 |
|
if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) { |
1289 |
|
BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID)); |
1290 |
|
} |
1291 |
|
|
1292 |
|
/* xvid id */ |
1293 |
|
#define XVID_ID "XviD" XVID_BS_VERSION |
1294 |
|
BitstreamWriteUserData(bs, XVID_ID, strlen(XVID_ID)); |
1295 |
} |
} |
1296 |
|
|
1297 |
|
|
1298 |
/* |
/* |
1299 |
write vop header |
write vop header |
|
|
|
|
NOTE: doesnt handle bother with time_base & time_inc |
|
|
time_base = n seconds since last resync (eg. last iframe) |
|
|
time_inc = nth of a second since last resync |
|
|
(decoder uses these values to determine precise time since last resync) |
|
1300 |
*/ |
*/ |
1301 |
void BitstreamWriteVopHeader(Bitstream * const bs, |
void |
1302 |
|
BitstreamWriteVopHeader( |
1303 |
|
Bitstream * const bs, |
1304 |
const MBParam * pParam, |
const MBParam * pParam, |
1305 |
const FRAMEINFO * frame) |
const FRAMEINFO * const frame, |
1306 |
|
int vop_coded) |
1307 |
{ |
{ |
|
#ifdef BFRAMES |
|
1308 |
uint32_t i; |
uint32_t i; |
1309 |
#endif |
|
1310 |
|
#if 0 |
1311 |
BitstreamPad(bs); |
BitstreamPad(bs); |
1312 |
|
#endif |
1313 |
|
|
1314 |
|
/* |
1315 |
|
* no padding here, anymore. You have to make sure that you are |
1316 |
|
* byte aligned, and that always 1-8 padding bits have been written |
1317 |
|
*/ |
1318 |
|
|
1319 |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
1320 |
|
|
1321 |
BitstreamPutBits(bs, frame->coding_type, 2); |
BitstreamPutBits(bs, frame->coding_type, 2); |
1322 |
|
#if 0 |
1323 |
|
DPRINTF(XVID_DEBUG_HEADER, "coding_type = %i\n", frame->coding_type); |
1324 |
|
#endif |
1325 |
|
|
1326 |
// time_base = 0 write n x PutBit(1), PutBit(0) |
for (i = 0; i < frame->seconds; i++) { |
|
#ifdef BFRAMES |
|
|
for (i = 0; i < frame->seconds; i++) |
|
|
{ |
|
1327 |
BitstreamPutBit(bs, 1); |
BitstreamPutBit(bs, 1); |
1328 |
} |
} |
1329 |
BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 0); |
|
#else |
|
|
BitstreamPutBits(bs, 0, 1); |
|
|
#endif |
|
1330 |
|
|
1331 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1332 |
|
|
1333 |
// time_increment: value=nth_of_sec, nbits = log2(resolution) |
/* time_increment: value=nth_of_sec, nbits = log2(resolution) */ |
1334 |
#ifdef BFRAMES |
|
1335 |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
1336 |
dprintf("[%i:%i] %c\n", frame->seconds, frame->ticks, frame->coding_type == I_VOP ? 'I' : frame->coding_type == P_VOP ? 'P' : 'B'); |
#if 0 |
1337 |
#else |
DPRINTF("[%i:%i] %c", |
1338 |
BitstreamPutBits(bs, 1, 1); |
frame->seconds, frame->ticks, |
1339 |
|
frame->coding_type == I_VOP ? 'I' : |
1340 |
|
frame->coding_type == P_VOP ? 'P' : |
1341 |
|
frame->coding_type == S_VOP ? 'S' : 'B'); |
1342 |
#endif |
#endif |
1343 |
|
|
1344 |
WRITE_MARKER(); |
WRITE_MARKER(); |
1345 |
|
|
1346 |
BitstreamPutBits(bs, 1, 1); // vop_coded |
if (!vop_coded) { |
1347 |
|
BitstreamPutBits(bs, 0, 1); |
1348 |
|
return; |
1349 |
|
} |
1350 |
|
|
1351 |
|
BitstreamPutBits(bs, 1, 1); /* vop_coded */ |
1352 |
|
|
1353 |
if (frame->coding_type == P_VOP) |
if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) ) |
1354 |
BitstreamPutBits(bs, frame->rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
1355 |
|
|
1356 |
BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE)) |
1357 |
|
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_REDUCED)?1:0); |
1358 |
|
|
1359 |
|
BitstreamPutBits(bs, 0, 3); /* intra_dc_vlc_threshold */ |
1360 |
|
|
1361 |
if (frame->global_flags & XVID_INTERLACING) |
if ((frame->vol_flags & XVID_VOL_INTERLACING)) { |
1362 |
|
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_TOPFIELDFIRST)); |
1363 |
|
BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_ALTERNATESCAN)); |
1364 |
|
} |
1365 |
|
|
1366 |
|
if (frame->coding_type == S_VOP) { |
1367 |
|
if (1) { /* no_of_sprite_warping_points>=1 (we use 2!) */ |
1368 |
|
int k; |
1369 |
|
for (k=0;k<2;k++) |
1370 |
|
{ |
1371 |
|
bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); /* du[k] */ |
1372 |
|
WRITE_MARKER(); |
1373 |
|
|
1374 |
|
bs_put_spritetrajectory(bs, frame->warp.duv[k].y ); /* dv[k] */ |
1375 |
|
WRITE_MARKER(); |
1376 |
|
|
1377 |
|
if ((frame->vol_flags & XVID_VOL_QUARTERPEL)) |
1378 |
{ |
{ |
1379 |
BitstreamPutBit(bs, 1); // top field first |
DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i) *QPEL*\n", k, frame->warp.duv[k].x/2, frame->warp.duv[k].y/2); |
1380 |
BitstreamPutBit(bs, 0); // alternate vertical scan |
} |
1381 |
|
else |
1382 |
|
{ |
1383 |
|
DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)\n", k, frame->warp.duv[k].x, frame->warp.duv[k].y); |
1384 |
|
} |
1385 |
|
} |
1386 |
|
} |
1387 |
} |
} |
1388 |
|
|
1389 |
BitstreamPutBits(bs, frame->quant, 5); // quantizer |
|
1390 |
|
#if 0 |
1391 |
|
DPRINTF(XVID_DEBUG_HEADER, "quant = %i\n", frame->quant); |
1392 |
|
#endif |
1393 |
|
|
1394 |
|
BitstreamPutBits(bs, frame->quant, 5); /* quantizer */ |
1395 |
|
|
1396 |
if (frame->coding_type != I_VOP) |
if (frame->coding_type != I_VOP) |
1397 |
BitstreamPutBits(bs, frame->fcode, 3); // forward_fixed_code |
BitstreamPutBits(bs, frame->fcode, 3); /* forward_fixed_code */ |
1398 |
|
|
1399 |
if (frame->coding_type == B_VOP) |
if (frame->coding_type == B_VOP) |
1400 |
BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code |
BitstreamPutBits(bs, frame->bcode, 3); /* backward_fixed_code */ |
1401 |
|
|
1402 |
|
} |
1403 |
|
|
1404 |
|
void |
1405 |
|
BitstreamWriteUserData(Bitstream * const bs, |
1406 |
|
uint8_t * data, |
1407 |
|
const int length) |
1408 |
|
{ |
1409 |
|
int i; |
1410 |
|
|
1411 |
|
BitstreamPad(bs); |
1412 |
|
BitstreamPutBits(bs, USERDATA_START_CODE, 32); |
1413 |
|
|
1414 |
|
for (i = 0; i < length; i++) { |
1415 |
|
BitstreamPutBits(bs, data[i], 8); |
1416 |
|
} |
1417 |
|
|
1418 |
} |
} |