62 |
#include "../quant/quant_matrix.h" |
#include "../quant/quant_matrix.h" |
63 |
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64 |
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65 |
static uint32_t __inline log2bin(uint32_t value) |
static uint32_t __inline |
66 |
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log2bin(uint32_t value) |
67 |
{ |
{ |
68 |
/* Changed by Chenm001 */ |
/* Changed by Chenm001 */ |
69 |
#ifndef WIN32 |
#ifndef WIN32 |
70 |
int n = 0; |
int n = 0; |
71 |
while (value) |
|
72 |
{ |
while (value) { |
73 |
value >>= 1; |
value >>= 1; |
74 |
n++; |
n++; |
75 |
} |
} |
76 |
return n; |
return n; |
77 |
#else |
#else |
78 |
__asm{ |
__asm{ |
79 |
bsr eax,value |
bsr eax, value inc eax} |
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inc eax |
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} |
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80 |
#endif |
#endif |
81 |
} |
} |
82 |
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83 |
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84 |
static const uint32_t intra_dc_threshold_table[] = |
static const uint32_t intra_dc_threshold_table[] = { |
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{ |
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85 |
32, /* never use */ |
32, /* never use */ |
86 |
13, |
13, |
87 |
15, |
15, |
93 |
}; |
}; |
94 |
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95 |
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96 |
void bs_get_matrix(Bitstream * bs, uint8_t * matrix) |
void |
97 |
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bs_get_matrix(Bitstream * bs, |
98 |
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uint8_t * matrix) |
99 |
{ |
{ |
100 |
int i = 0; |
int i = 0; |
101 |
int last, value = 0; |
int last, value = 0; |
102 |
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103 |
do |
do { |
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{ |
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104 |
last = value; |
last = value; |
105 |
value = BitstreamGetBits(bs, 8); |
value = BitstreamGetBits(bs, 8); |
106 |
matrix[ scan_tables[0][i++] ] = value; |
matrix[ scan_tables[0][i++] ] = value; |
107 |
} |
} |
108 |
while (value != 0 && i < 64); |
while (value != 0 && i < 64); |
109 |
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110 |
while (i < 64) |
while (i < 64) { |
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{ |
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111 |
matrix[ scan_tables[0][i++] ] = last; |
matrix[ scan_tables[0][i++] ] = last; |
112 |
} |
} |
113 |
} |
} |
117 |
returns coding_type, or -1 if error |
returns coding_type, or -1 if error |
118 |
*/ |
*/ |
119 |
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120 |
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) |
int |
121 |
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BitstreamReadHeaders(Bitstream * bs, |
122 |
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DECODER * dec, |
123 |
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uint32_t * rounding, |
124 |
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uint32_t * quant, |
125 |
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uint32_t * fcode_forward, |
126 |
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uint32_t * fcode_backward, |
127 |
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uint32_t * intra_dc_threshold) |
128 |
{ |
{ |
129 |
uint32_t vol_ver_id; |
uint32_t vol_ver_id; |
130 |
static uint32_t time_increment_resolution; |
static uint32_t time_increment_resolution; |
133 |
uint32_t time_incr=0; |
uint32_t time_incr=0; |
134 |
int32_t time_increment; |
int32_t time_increment; |
135 |
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136 |
do |
do { |
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{ |
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137 |
BitstreamByteAlign(bs); |
BitstreamByteAlign(bs); |
138 |
start_code = BitstreamShowBits(bs, 32); |
start_code = BitstreamShowBits(bs, 32); |
139 |
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140 |
if (start_code == VISOBJSEQ_START_CODE) |
if (start_code == VISOBJSEQ_START_CODE) { |
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{ |
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141 |
// DEBUG("visual_object_sequence"); |
// DEBUG("visual_object_sequence"); |
142 |
BitstreamSkip(bs, 32); // visual_object_sequence_start_code |
BitstreamSkip(bs, 32); // visual_object_sequence_start_code |
143 |
BitstreamSkip(bs, 8); // profile_and_level_indication |
BitstreamSkip(bs, 8); // profile_and_level_indication |
144 |
} |
} else if (start_code == VISOBJSEQ_STOP_CODE) { |
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else if (start_code == VISOBJSEQ_STOP_CODE) |
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{ |
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145 |
BitstreamSkip(bs, 32); // visual_object_sequence_stop_code |
BitstreamSkip(bs, 32); // visual_object_sequence_stop_code |
146 |
} |
} else if (start_code == VISOBJ_START_CODE) { |
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else if (start_code == VISOBJ_START_CODE) |
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{ |
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147 |
// DEBUG("visual_object"); |
// DEBUG("visual_object"); |
148 |
BitstreamSkip(bs,32); // visual_object_start_code |
BitstreamSkip(bs,32); // visual_object_start_code |
149 |
if (BitstreamGetBit(bs)) // is_visual_object_identified |
if (BitstreamGetBit(bs)) // is_visual_object_identified |
150 |
{ |
{ |
151 |
vol_ver_id = BitstreamGetBits(bs,4); // visual_object_ver_id |
vol_ver_id = BitstreamGetBits(bs,4); // visual_object_ver_id |
152 |
BitstreamSkip(bs, 3); // visual_object_priority |
BitstreamSkip(bs, 3); // visual_object_priority |
153 |
} |
} else { |
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else |
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{ |
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154 |
vol_ver_id = 1; |
vol_ver_id = 1; |
155 |
} |
} |
156 |
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176 |
BitstreamSkip(bs, 8); // matrix_coefficients |
BitstreamSkip(bs, 8); // matrix_coefficients |
177 |
} |
} |
178 |
} |
} |
179 |
} |
} else if ((start_code & ~0x1f) == VIDOBJ_START_CODE) { |
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else if ((start_code & ~0x1f) == VIDOBJ_START_CODE) |
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{ |
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180 |
BitstreamSkip(bs, 32); // video_object_start_code |
BitstreamSkip(bs, 32); // video_object_start_code |
181 |
} |
} else if ((start_code & ~0xf) == VIDOBJLAY_START_CODE) { |
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else if ((start_code & ~0xf) == VIDOBJLAY_START_CODE) |
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{ |
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182 |
// DEBUG("video_object_layer"); |
// DEBUG("video_object_layer"); |
183 |
BitstreamSkip(bs, 32); // video_object_layer_start_code |
BitstreamSkip(bs, 32); // video_object_layer_start_code |
184 |
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185 |
BitstreamSkip(bs, 1); // random_accessible_vol |
BitstreamSkip(bs, 1); // random_accessible_vol |
186 |
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187 |
// video_object_type_indication |
// video_object_type_indication |
188 |
if (BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_SIMPLE && |
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 |
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BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_CORE && |
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BitstreamShowBits(bs, 8) != VIDOBJLAY_TYPE_MAIN && |
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BitstreamShowBits(bs, 8) != 0) // BUGGY DIVX |
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189 |
{ |
{ |
190 |
DEBUG1("video_object_type_indication not supported", BitstreamShowBits(bs, 8)); |
DEBUG1("video_object_type_indication not supported", |
191 |
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BitstreamShowBits(bs, 8)); |
192 |
return -1; |
return -1; |
193 |
} |
} |
194 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 8); |
199 |
DEBUG("+ is_object_layer_identifier"); |
DEBUG("+ is_object_layer_identifier"); |
200 |
vol_ver_id = BitstreamGetBits(bs,4); // video_object_layer_verid |
vol_ver_id = BitstreamGetBits(bs,4); // video_object_layer_verid |
201 |
BitstreamSkip(bs, 3); // video_object_layer_priority |
BitstreamSkip(bs, 3); // video_object_layer_priority |
202 |
} |
} else { |
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else |
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{ |
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203 |
vol_ver_id = 1; |
vol_ver_id = 1; |
204 |
} |
} |
205 |
//DEBUGI("vol_ver_id", vol_ver_id); |
//DEBUGI("vol_ver_id", vol_ver_id); |
237 |
dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape |
dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape |
238 |
// DEBUG1("shape", dec->shape); |
// DEBUG1("shape", dec->shape); |
239 |
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240 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) { |
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{ |
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241 |
BitstreamSkip(bs, 4); // video_object_layer_shape_extension |
BitstreamSkip(bs, 4); // video_object_layer_shape_extension |
242 |
} |
} |
243 |
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247 |
time_increment_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution |
time_increment_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution |
248 |
time_increment_resolution--; |
time_increment_resolution--; |
249 |
//DEBUG1("time_increment_resolution=",time_increment_resolution); |
//DEBUG1("time_increment_resolution=",time_increment_resolution); |
250 |
if (time_increment_resolution > 0) |
if (time_increment_resolution > 0) { |
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{ |
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251 |
dec->time_inc_bits = log2bin(time_increment_resolution); |
dec->time_inc_bits = log2bin(time_increment_resolution); |
252 |
} |
} else { |
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else |
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{ |
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253 |
// dec->time_inc_bits = 0; |
// dec->time_inc_bits = 0; |
254 |
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255 |
// for "old" xvid compatibility, set time_inc_bits = 1 |
// for "old" xvid compatibility, set time_inc_bits = 1 |
263 |
BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment |
BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment |
264 |
} |
} |
265 |
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266 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
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{ |
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267 |
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268 |
if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) |
if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) { |
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{ |
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269 |
uint32_t width, height; |
uint32_t width, height; |
270 |
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271 |
READ_MARKER(); |
READ_MARKER(); |
276 |
//DEBUGI("height", height); |
//DEBUGI("height", height); |
277 |
READ_MARKER(); |
READ_MARKER(); |
278 |
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279 |
if (width != dec->width || height != dec->height) |
if (width != dec->width || height != dec->height) { |
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{ |
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280 |
DEBUG("FATAL: video dimension discrepancy ***"); |
DEBUG("FATAL: video dimension discrepancy ***"); |
281 |
DEBUG2("bitstream width/height", width, height); |
DEBUG2("bitstream width/height", width, height); |
282 |
DEBUG2("param width/height", dec->width, dec->height); |
DEBUG2("param width/height", dec->width, dec->height); |
285 |
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286 |
} |
} |
287 |
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288 |
if ((dec->interlacing = BitstreamGetBit(bs))) |
if ((dec->interlacing = BitstreamGetBit(bs))) { |
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{ |
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289 |
DEBUG("vol: interlacing"); |
DEBUG("vol: interlacing"); |
290 |
} |
} |
291 |
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302 |
return -1; |
return -1; |
303 |
} |
} |
304 |
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305 |
if (vol_ver_id != 1 && dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
if (vol_ver_id != 1 && |
306 |
{ |
dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
307 |
BitstreamSkip(bs, 1); // sadct_disable |
BitstreamSkip(bs, 1); // sadct_disable |
308 |
} |
} |
309 |
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312 |
DEBUG("+ not_8_bit [IGNORED/TODO]"); |
DEBUG("+ not_8_bit [IGNORED/TODO]"); |
313 |
dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision |
dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision |
314 |
BitstreamSkip(bs, 4); // bits_per_pixel |
BitstreamSkip(bs, 4); // bits_per_pixel |
315 |
} |
} else { |
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else |
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{ |
|
316 |
dec->quant_bits = 5; |
dec->quant_bits = 5; |
317 |
} |
} |
318 |
|
|
319 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
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{ |
|
320 |
BitstreamSkip(bs, 1); // no_gray_quant_update |
BitstreamSkip(bs, 1); // no_gray_quant_update |
321 |
BitstreamSkip(bs, 1); // composition_method |
BitstreamSkip(bs, 1); // composition_method |
322 |
BitstreamSkip(bs, 1); // linear_composition |
BitstreamSkip(bs, 1); // linear_composition |
325 |
dec->quant_type = BitstreamGetBit(bs); // quant_type |
dec->quant_type = BitstreamGetBit(bs); // quant_type |
326 |
// DEBUG1("**** quant_type", dec->quant_type); |
// DEBUG1("**** quant_type", dec->quant_type); |
327 |
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|
328 |
if (dec->quant_type) |
if (dec->quant_type) { |
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{ |
|
329 |
if (BitstreamGetBit(bs)) // load_intra_quant_mat |
if (BitstreamGetBit(bs)) // load_intra_quant_mat |
330 |
{ |
{ |
331 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
332 |
|
|
333 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
334 |
set_intra_matrix(matrix); |
set_intra_matrix(matrix); |
335 |
} |
} else |
|
else |
|
336 |
set_intra_matrix(get_default_intra_matrix()); |
set_intra_matrix(get_default_intra_matrix()); |
337 |
|
|
338 |
if (BitstreamGetBit(bs)) // load_inter_quant_mat |
if (BitstreamGetBit(bs)) // load_inter_quant_mat |
339 |
{ |
{ |
340 |
uint8_t matrix[64]; |
uint8_t matrix[64]; |
341 |
|
|
342 |
bs_get_matrix(bs, matrix); |
bs_get_matrix(bs, matrix); |
343 |
set_inter_matrix(matrix); |
set_inter_matrix(matrix); |
344 |
} |
} else |
|
else |
|
345 |
set_inter_matrix(get_default_inter_matrix()); |
set_inter_matrix(get_default_inter_matrix()); |
346 |
|
|
347 |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) |
if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) { |
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{ |
|
348 |
// TODO |
// TODO |
349 |
DEBUG("TODO: grayscale matrix stuff"); |
DEBUG("TODO: grayscale matrix stuff"); |
350 |
return -1; |
return -1; |
353 |
} |
} |
354 |
|
|
355 |
|
|
356 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
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{ |
|
357 |
dec->quarterpel = BitstreamGetBit(bs); // quarter_sampe |
dec->quarterpel = BitstreamGetBit(bs); // quarter_sampe |
358 |
if (dec->quarterpel) |
if (dec->quarterpel) { |
|
{ |
|
359 |
DEBUG("IGNORED/TODO: quarter_sample"); |
DEBUG("IGNORED/TODO: quarter_sample"); |
360 |
} |
} |
361 |
} |
} else { |
|
else |
|
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{ |
|
362 |
dec->quarterpel = 0; |
dec->quarterpel = 0; |
363 |
} |
} |
364 |
|
|
381 |
BitstreamSkip(bs, 1); // reversible_vlc |
BitstreamSkip(bs, 1); // reversible_vlc |
382 |
} |
} |
383 |
|
|
384 |
if (vol_ver_id != 1) |
if (vol_ver_id != 1) { |
|
{ |
|
385 |
if (BitstreamGetBit(bs)) // newpred_enable |
if (BitstreamGetBit(bs)) // newpred_enable |
386 |
{ |
{ |
387 |
DEBUG("+ newpred_enable"); |
DEBUG("+ newpred_enable"); |
402 |
DEBUG("TODO: scalability"); |
DEBUG("TODO: scalability"); |
403 |
return -1; |
return -1; |
404 |
} |
} |
405 |
} |
} else // dec->shape == BINARY_ONLY |
|
else // dec->shape == BINARY_ONLY |
|
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{ |
|
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if (vol_ver_id != 1) |
|
406 |
{ |
{ |
407 |
|
if (vol_ver_id != 1) { |
408 |
if (BitstreamGetBit(bs)) // scalability |
if (BitstreamGetBit(bs)) // scalability |
409 |
{ |
{ |
410 |
// TODO |
// TODO |
416 |
|
|
417 |
} |
} |
418 |
|
|
419 |
} |
} else if (start_code == GRPOFVOP_START_CODE) { |
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else if (start_code == GRPOFVOP_START_CODE) |
|
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{ |
|
420 |
// DEBUG("group_of_vop"); |
// DEBUG("group_of_vop"); |
421 |
BitstreamSkip(bs, 32); |
BitstreamSkip(bs, 32); |
422 |
{ |
{ |
423 |
int hours, minutes, seconds; |
int hours, minutes, seconds; |
424 |
|
|
425 |
hours = BitstreamGetBits(bs, 5); |
hours = BitstreamGetBits(bs, 5); |
426 |
minutes = BitstreamGetBits(bs, 6); |
minutes = BitstreamGetBits(bs, 6); |
427 |
READ_MARKER(); |
READ_MARKER(); |
430 |
} |
} |
431 |
BitstreamSkip(bs, 1); // closed_gov |
BitstreamSkip(bs, 1); // closed_gov |
432 |
BitstreamSkip(bs, 1); // broken_link |
BitstreamSkip(bs, 1); // broken_link |
433 |
} |
} else if (start_code == VOP_START_CODE) { |
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else if (start_code == VOP_START_CODE) |
|
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{ |
|
434 |
// DEBUG("vop_start_code"); |
// DEBUG("vop_start_code"); |
435 |
BitstreamSkip(bs, 32); // vop_start_code |
BitstreamSkip(bs, 32); // vop_start_code |
436 |
|
|
445 |
|
|
446 |
//DEBUG1("time_inc_bits", dec->time_inc_bits); |
//DEBUG1("time_inc_bits", dec->time_inc_bits); |
447 |
//DEBUG1("vop_time_incr", BitstreamShowBits(bs, dec->time_inc_bits)); |
//DEBUG1("vop_time_incr", BitstreamShowBits(bs, dec->time_inc_bits)); |
448 |
if (dec->time_inc_bits) |
if (dec->time_inc_bits) { |
|
{ |
|
449 |
//BitstreamSkip(bs, dec->time_inc_bits); // vop_time_increment |
//BitstreamSkip(bs, dec->time_inc_bits); // vop_time_increment |
450 |
time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); // vop_time_increment |
time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); // vop_time_increment |
451 |
} |
} |
452 |
if(coding_type != B_VOP){ |
if(coding_type != B_VOP){ |
453 |
dec->last_time_base = dec->time_base; |
dec->last_time_base = dec->time_base; |
454 |
dec->time_base += time_incr; |
dec->time_base += time_incr; |
455 |
dec->time = dec->time_base*time_increment_resolution + time_increment; |
dec->time = |
456 |
|
dec->time_base * time_increment_resolution + |
457 |
|
time_increment; |
458 |
dec->time_pp= (uint32_t)(dec->time - dec->last_non_b_time); |
dec->time_pp= (uint32_t)(dec->time - dec->last_non_b_time); |
459 |
dec->last_non_b_time= dec->time; |
dec->last_non_b_time= dec->time; |
460 |
}else{ |
}else{ |
461 |
dec->time = (dec->last_time_base + time_incr)*time_increment_resolution + time_increment; |
dec->time = |
462 |
|
(dec->last_time_base + |
463 |
|
time_incr) * time_increment_resolution + time_increment; |
464 |
dec->time_bp= (uint32_t)(dec->last_non_b_time - dec->time); |
dec->time_bp= (uint32_t)(dec->last_non_b_time - dec->time); |
465 |
} |
} |
466 |
//DEBUG1("time_increment=",time_increment); |
//DEBUG1("time_increment=",time_increment); |
478 |
*/ |
*/ |
479 |
|
|
480 |
// fix a little bug by MinChen <chenm002@163.com> |
// fix a little bug by MinChen <chenm002@163.com> |
481 |
if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && (coding_type == P_VOP)) |
if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) && |
482 |
{ |
(coding_type == P_VOP)) { |
483 |
*rounding = BitstreamGetBit(bs); // rounding_type |
*rounding = BitstreamGetBit(bs); // rounding_type |
484 |
//DEBUG1("rounding", *rounding); |
//DEBUG1("rounding", *rounding); |
485 |
} |
} |
489 |
} |
} |
490 |
*/ |
*/ |
491 |
|
|
492 |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) |
if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) { |
|
{ |
|
493 |
uint32_t width, height; |
uint32_t width, height; |
494 |
uint32_t horiz_mc_ref, vert_mc_ref; |
uint32_t horiz_mc_ref, vert_mc_ref; |
495 |
|
|
513 |
} |
} |
514 |
|
|
515 |
|
|
516 |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) |
if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) { |
|
{ |
|
517 |
// intra_dc_vlc_threshold |
// intra_dc_vlc_threshold |
518 |
*intra_dc_threshold = intra_dc_threshold_table[ BitstreamGetBits(bs,3) ]; |
*intra_dc_threshold = |
519 |
|
intra_dc_threshold_table[BitstreamGetBits(bs, 3)]; |
520 |
|
|
521 |
if (dec->interlacing) |
if (dec->interlacing) { |
522 |
{ |
if ((dec->top_field_first = BitstreamGetBit(bs))) { |
|
if ((dec->top_field_first = BitstreamGetBit(bs))) |
|
|
{ |
|
523 |
DEBUG("vop: top_field_first"); |
DEBUG("vop: top_field_first"); |
524 |
} |
} |
525 |
if ((dec->alternate_vertical_scan = BitstreamGetBit(bs))) |
if ((dec->alternate_vertical_scan = BitstreamGetBit(bs))) { |
|
{ |
|
526 |
DEBUG("vop: alternate_vertical_scan"); |
DEBUG("vop: alternate_vertical_scan"); |
527 |
} |
} |
528 |
} |
} |
533 |
|
|
534 |
//DEBUG1("quant", *quant); |
//DEBUG1("quant", *quant); |
535 |
|
|
536 |
if (coding_type != I_VOP) |
if (coding_type != I_VOP) { |
|
{ |
|
537 |
*fcode_forward = BitstreamGetBits(bs, 3); // fcode_forward |
*fcode_forward = BitstreamGetBits(bs, 3); // fcode_forward |
538 |
} |
} |
539 |
|
|
540 |
if (coding_type == B_VOP) |
if (coding_type == B_VOP) { |
|
{ |
|
541 |
*fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward |
*fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward |
542 |
} |
} |
543 |
if (!dec->scalability){ |
if (!dec->scalability){ |
544 |
if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && (coding_type != I_VOP)){ |
if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) && |
545 |
|
(coding_type != I_VOP)) { |
546 |
BitstreamSkip(bs, 1); // vop_shape_coding_type |
BitstreamSkip(bs, 1); // vop_shape_coding_type |
547 |
} |
} |
548 |
} |
} |
549 |
return coding_type; |
return coding_type; |
550 |
} |
} else if (start_code == USERDATA_START_CODE) { |
|
else if (start_code == USERDATA_START_CODE) |
|
|
{ |
|
551 |
// DEBUG("user_data"); |
// DEBUG("user_data"); |
552 |
BitstreamSkip(bs, 32); // user_data_start_code |
BitstreamSkip(bs, 32); // user_data_start_code |
553 |
} |
} else // start_code == ? |
|
else // start_code == ? |
|
|
{ |
|
|
if (BitstreamShowBits(bs, 24) == 0x000001) |
|
554 |
{ |
{ |
555 |
DEBUG1("*** WARNING: unknown start_code", BitstreamShowBits(bs, 32)); |
if (BitstreamShowBits(bs, 24) == 0x000001) { |
556 |
|
DEBUG1("*** WARNING: unknown start_code", |
557 |
|
BitstreamShowBits(bs, 32)); |
558 |
} |
} |
559 |
BitstreamSkip(bs, 8); |
BitstreamSkip(bs, 8); |
560 |
} |
} |
568 |
|
|
569 |
/* write custom quant matrix */ |
/* write custom quant matrix */ |
570 |
|
|
571 |
static void bs_put_matrix(Bitstream * bs, const int16_t *matrix) |
static void |
572 |
|
bs_put_matrix(Bitstream * bs, |
573 |
|
const int16_t * matrix) |
574 |
{ |
{ |
575 |
int i, j; |
int i, j; |
576 |
const int last = matrix[scan_tables[0][63]]; |
const int last = matrix[scan_tables[0][63]]; |
577 |
|
|
578 |
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--) ; |
579 |
|
|
580 |
for (i = 0; i <= j; i++) |
for (i = 0; i <= j; i++) { |
|
{ |
|
581 |
BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8); |
582 |
} |
} |
583 |
|
|
584 |
if (j < 63) |
if (j < 63) { |
|
{ |
|
585 |
BitstreamPutBits(bs, 0, 8); |
BitstreamPutBits(bs, 0, 8); |
586 |
} |
} |
587 |
} |
} |
590 |
/* |
/* |
591 |
write vol header |
write vol header |
592 |
*/ |
*/ |
593 |
void BitstreamWriteVolHeader(Bitstream * const bs, |
void |
594 |
const MBParam * pParam, const FRAMEINFO * frame) |
BitstreamWriteVolHeader(Bitstream * const bs, |
595 |
|
const MBParam * pParam, |
596 |
|
const FRAMEINFO * frame) |
597 |
{ |
{ |
598 |
// video object_start_code & vo_id |
// video object_start_code & vo_id |
599 |
BitstreamPad(bs); |
BitstreamPad(bs); |
610 |
BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1) |
BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1) |
611 |
|
|
612 |
#ifdef BFRAMES |
#ifdef BFRAMES |
613 |
if (pParam->max_bframes > 0) |
if (pParam->max_bframes > 0) { |
|
{ |
|
614 |
dprintf("low_delay=1"); |
dprintf("low_delay=1"); |
615 |
BitstreamPutBit(bs, 1); // vol_control_parameters |
BitstreamPutBit(bs, 1); // vol_control_parameters |
616 |
BitstreamPutBits(bs, 1, 2); // chroma_format 1="4:2:0" |
BitstreamPutBits(bs, 1, 2); // chroma_format 1="4:2:0" |
617 |
BitstreamPutBit(bs, 0); // low_delay |
BitstreamPutBit(bs, 0); // low_delay |
618 |
BitstreamPutBit(bs, 0); // vbv_parameters (0=not given) |
BitstreamPutBit(bs, 0); // vbv_parameters (0=not given) |
619 |
} |
} else |
|
else |
|
620 |
#endif |
#endif |
621 |
{ |
{ |
622 |
BitstreamPutBits(bs, 0, 1); // vol_control_parameters (0=not given) |
BitstreamPutBits(bs, 0, 1); // vol_control_parameters (0=not given) |
660 |
// quant_type 0=h.263 1=mpeg4(quantizer tables) |
// quant_type 0=h.263 1=mpeg4(quantizer tables) |
661 |
BitstreamPutBit(bs, pParam->m_quant_type); |
BitstreamPutBit(bs, pParam->m_quant_type); |
662 |
|
|
663 |
if (pParam->m_quant_type) |
if (pParam->m_quant_type) { |
|
{ |
|
664 |
BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
665 |
if (get_intra_matrix_status()) |
if (get_intra_matrix_status()) { |
|
{ |
|
666 |
bs_put_matrix(bs, get_intra_matrix()); |
bs_put_matrix(bs, get_intra_matrix()); |
667 |
} |
} |
668 |
|
|
669 |
BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat |
BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat |
670 |
if (get_inter_matrix_status()) |
if (get_inter_matrix_status()) { |
|
{ |
|
671 |
bs_put_matrix(bs, get_inter_matrix()); |
bs_put_matrix(bs, get_inter_matrix()); |
672 |
} |
} |
673 |
|
|
688 |
time_inc = nth of a second since last resync |
time_inc = nth of a second since last resync |
689 |
(decoder uses these values to determine precise time since last resync) |
(decoder uses these values to determine precise time since last resync) |
690 |
*/ |
*/ |
691 |
void BitstreamWriteVopHeader(Bitstream * const bs, |
void |
692 |
|
BitstreamWriteVopHeader(Bitstream * const bs, |
693 |
const MBParam * pParam, |
const MBParam * pParam, |
694 |
const FRAMEINFO * frame) |
const FRAMEINFO * frame) |
695 |
{ |
{ |
703 |
|
|
704 |
// time_base = 0 write n x PutBit(1), PutBit(0) |
// time_base = 0 write n x PutBit(1), PutBit(0) |
705 |
#ifdef BFRAMES |
#ifdef BFRAMES |
706 |
for (i = 0; i < frame->seconds; i++) |
for (i = 0; i < frame->seconds; i++) { |
|
{ |
|
707 |
BitstreamPutBit(bs, 1); |
BitstreamPutBit(bs, 1); |
708 |
} |
} |
709 |
BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 0); |
716 |
// time_increment: value=nth_of_sec, nbits = log2(resolution) |
// time_increment: value=nth_of_sec, nbits = log2(resolution) |
717 |
#ifdef BFRAMES |
#ifdef BFRAMES |
718 |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase)); |
719 |
dprintf("[%i:%i] %c\n", frame->seconds, frame->ticks, frame->coding_type == I_VOP ? 'I' : frame->coding_type == P_VOP ? 'P' : 'B'); |
dprintf("[%i:%i] %c\n", frame->seconds, frame->ticks, |
720 |
|
frame->coding_type == I_VOP ? 'I' : frame->coding_type == |
721 |
|
P_VOP ? 'P' : 'B'); |
722 |
#else |
#else |
723 |
BitstreamPutBits(bs, 1, 1); |
BitstreamPutBits(bs, 1, 1); |
724 |
#endif |
#endif |
732 |
|
|
733 |
BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
734 |
|
|
735 |
if (frame->global_flags & XVID_INTERLACING) |
if (frame->global_flags & XVID_INTERLACING) { |
|
{ |
|
736 |
BitstreamPutBit(bs, 1); // top field first |
BitstreamPutBit(bs, 1); // top field first |
737 |
BitstreamPutBit(bs, 0); // alternate vertical scan |
BitstreamPutBit(bs, 0); // alternate vertical scan |
738 |
} |
} |