dvbd / ctools.c @ bfdb7446
History | View | Annotate | Download (46.6 KB)
| 1 |
/*
|
|---|---|
| 2 |
* mpegtools for the Siemens Fujitsu DVB PCI card
|
| 3 |
*
|
| 4 |
* Copyright (C) 2000, 2001 Marcus Metzler
|
| 5 |
* for convergence integrated media GmbH
|
| 6 |
*
|
| 7 |
* This program is free software; you can redistribute it and/or
|
| 8 |
* modify it under the terms of the GNU General Public License
|
| 9 |
* as published by the Free Software Foundation; either version 2
|
| 10 |
* of the License, or (at your option) any later version.
|
| 11 |
*
|
| 12 |
|
| 13 |
* This program is distributed in the hope that it will be useful,
|
| 14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 16 |
* GNU General Public License for more details.
|
| 17 |
*
|
| 18 |
|
| 19 |
* You should have received a copy of the GNU General Public License
|
| 20 |
* along with this program; if not, write to the Free Software
|
| 21 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
| 22 |
* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
|
| 23 |
*
|
| 24 |
|
| 25 |
* The author can be reached at marcus@convergence.de,
|
| 26 |
|
| 27 |
* the project's page is at http://linuxtv.org/dvb/
|
| 28 |
*/
|
| 29 |
|
| 30 |
#include "config.h" |
| 31 |
#include "ctools.h" |
| 32 |
|
| 33 |
#define MAX_SEARCH 1024 * 1024 |
| 34 |
|
| 35 |
/*
|
| 36 |
|
| 37 |
PES
|
| 38 |
|
| 39 |
*/
|
| 40 |
|
| 41 |
|
| 42 |
void init_pes(pes_packet *p){
|
| 43 |
p->stream_id = 0;
|
| 44 |
p->llength[0] = 0; |
| 45 |
p->llength[1] = 0; |
| 46 |
p->length = 0;
|
| 47 |
p->flags1 = 0x80;
|
| 48 |
p->flags2 = 0;
|
| 49 |
p->pes_hlength = 0;
|
| 50 |
p->trick = 0;
|
| 51 |
p->add_cpy = 0;
|
| 52 |
p->priv_flags = 0;
|
| 53 |
p->pack_field_length = 0;
|
| 54 |
p->pack_header = (u8 *) NULL;
|
| 55 |
p->pck_sqnc_cntr = 0;
|
| 56 |
p->org_stuff_length = 0;
|
| 57 |
p->pes_ext_lngth = 0;
|
| 58 |
p->pes_ext = (u8 *) NULL;
|
| 59 |
p->pes_pckt_data = (u8 *) NULL;
|
| 60 |
p->padding = 0;
|
| 61 |
p->mpeg = 2; // DEFAULT MPEG2 |
| 62 |
p->mpeg1_pad = 0;
|
| 63 |
p->mpeg1_headr = NULL;
|
| 64 |
p->stuffing = 0;
|
| 65 |
} |
| 66 |
|
| 67 |
void kill_pes(pes_packet *p){
|
| 68 |
if (p->pack_header)
|
| 69 |
free(p->pack_header); |
| 70 |
if (p->pes_ext)
|
| 71 |
free(p->pes_ext); |
| 72 |
if (p->pes_pckt_data)
|
| 73 |
free(p->pes_pckt_data); |
| 74 |
if (p->mpeg1_headr)
|
| 75 |
free(p->mpeg1_headr); |
| 76 |
init_pes(p); |
| 77 |
} |
| 78 |
|
| 79 |
void setlength_pes(pes_packet *p){
|
| 80 |
short *ll;
|
| 81 |
ll = (short *) p->llength;
|
| 82 |
p->length = ntohs(*ll); |
| 83 |
} |
| 84 |
|
| 85 |
static void setl_pes(pes_packet *p){ |
| 86 |
setlength_pes(p); |
| 87 |
if (p->length)
|
| 88 |
p->pes_pckt_data = (u8 *)malloc(p->length); |
| 89 |
} |
| 90 |
|
| 91 |
void nlength_pes(pes_packet *p){
|
| 92 |
if (p->length <= 0xFFFF){ |
| 93 |
short *ll = (short *) p->llength; |
| 94 |
short l = p->length;
|
| 95 |
*ll = htons(l); |
| 96 |
} else {
|
| 97 |
p->llength[0] =0x00; |
| 98 |
p->llength[1] =0x00; |
| 99 |
} |
| 100 |
} |
| 101 |
|
| 102 |
static void nl_pes(pes_packet *p) |
| 103 |
{
|
| 104 |
nlength_pes(p); |
| 105 |
p->pes_pckt_data = (u8 *) malloc(p->length); |
| 106 |
} |
| 107 |
|
| 108 |
void pts2pts(u8 *av_pts, u8 *pts)
|
| 109 |
{
|
| 110 |
|
| 111 |
av_pts[0] = ((pts[0] & 0x06) << 5) | |
| 112 |
((pts[1] & 0xFC) >> 2); |
| 113 |
av_pts[1] = ((pts[1] & 0x03) << 6) | |
| 114 |
((pts[2] & 0xFC) >> 2); |
| 115 |
av_pts[2] = ((pts[2] & 0x02) << 6) | |
| 116 |
((pts[3] & 0xFE) >> 1); |
| 117 |
av_pts[3] = ((pts[3] & 0x01) << 7) | |
| 118 |
((pts[4] & 0xFE) >> 1); |
| 119 |
|
| 120 |
} |
| 121 |
|
| 122 |
|
| 123 |
int cwrite_pes(u8 *buf, pes_packet *p, long length){ |
| 124 |
int count,i;
|
| 125 |
u8 dummy; |
| 126 |
int more = 0; |
| 127 |
u8 headr[3] = { 0x00, 0x00 , 0x01}; |
| 128 |
|
| 129 |
if (length < p->length+p->pes_hlength){
|
| 130 |
fprintf(stderr,"Wrong buffer size in cwrite_pes\n");
|
| 131 |
exit(1);
|
| 132 |
} |
| 133 |
|
| 134 |
|
| 135 |
memcpy(buf,headr,3);
|
| 136 |
count = 3;
|
| 137 |
buf[count] = p->stream_id; |
| 138 |
count++; |
| 139 |
|
| 140 |
switch ( p->stream_id ) {
|
| 141 |
|
| 142 |
case PROG_STREAM_MAP:
|
| 143 |
case PRIVATE_STREAM2:
|
| 144 |
case PROG_STREAM_DIR:
|
| 145 |
case ECM_STREAM :
|
| 146 |
case EMM_STREAM :
|
| 147 |
case PADDING_STREAM :
|
| 148 |
buf[count] = p->llength[0];
|
| 149 |
count++; |
| 150 |
buf[count] = p->llength[1];
|
| 151 |
count++; |
| 152 |
memcpy(buf+count,p->pes_pckt_data,p->length); |
| 153 |
count += p->length; |
| 154 |
break;
|
| 155 |
case DSM_CC_STREAM :
|
| 156 |
case ISO13522_STREAM:
|
| 157 |
case PRIVATE_STREAM1:
|
| 158 |
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
|
| 159 |
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
|
| 160 |
buf[count] = p->llength[0];
|
| 161 |
count++; |
| 162 |
buf[count] = p->llength[1];
|
| 163 |
count++; |
| 164 |
more = 1;
|
| 165 |
break;
|
| 166 |
} |
| 167 |
|
| 168 |
|
| 169 |
if ( more ) {
|
| 170 |
if ( p->mpeg == 2 ){ |
| 171 |
memcpy(buf+count,&p->flags1,1);
|
| 172 |
count++; |
| 173 |
memcpy(buf+count,&p->flags2,1);
|
| 174 |
count++; |
| 175 |
memcpy(buf+count,&p->pes_hlength,1);
|
| 176 |
count++; |
| 177 |
|
| 178 |
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_ONLY){
|
| 179 |
memcpy(buf+count,p->pts,5);
|
| 180 |
count += 5;
|
| 181 |
} else
|
| 182 |
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_DTS){
|
| 183 |
memcpy(buf+count,p->pts,5);
|
| 184 |
count += 5;
|
| 185 |
memcpy(buf+count,p->dts,5);
|
| 186 |
count += 5;
|
| 187 |
} |
| 188 |
if (p->flags2 & ESCR_FLAG){
|
| 189 |
memcpy(buf+count,p->escr,6);
|
| 190 |
count += 6;
|
| 191 |
} |
| 192 |
if (p->flags2 & ES_RATE_FLAG){
|
| 193 |
memcpy(buf+count,p->es_rate,3);
|
| 194 |
count += 3;
|
| 195 |
} |
| 196 |
if (p->flags2 & DSM_TRICK_FLAG){
|
| 197 |
memcpy(buf+count,&p->trick,1);
|
| 198 |
count++; |
| 199 |
} |
| 200 |
if (p->flags2 & ADD_CPY_FLAG){
|
| 201 |
memcpy(buf+count,&p->add_cpy,1);
|
| 202 |
count++; |
| 203 |
} |
| 204 |
if (p->flags2 & PES_CRC_FLAG){
|
| 205 |
memcpy(buf+count,p->prev_pes_crc,2);
|
| 206 |
count += 2;
|
| 207 |
} |
| 208 |
if (p->flags2 & PES_EXT_FLAG){
|
| 209 |
memcpy(buf+count,&p->priv_flags,1);
|
| 210 |
count++; |
| 211 |
|
| 212 |
if (p->priv_flags & PRIVATE_DATA){
|
| 213 |
memcpy(buf+count,p->pes_priv_data,16);
|
| 214 |
count += 16;
|
| 215 |
} |
| 216 |
if (p->priv_flags & HEADER_FIELD){
|
| 217 |
memcpy(buf+count,&p->pack_field_length, |
| 218 |
1);
|
| 219 |
count++; |
| 220 |
memcpy(buf+count,p->pack_header, |
| 221 |
p->pack_field_length); |
| 222 |
count += p->pack_field_length; |
| 223 |
|
| 224 |
} |
| 225 |
|
| 226 |
if ( p->priv_flags & PACK_SEQ_CTR){
|
| 227 |
memcpy(buf+count,&p->pck_sqnc_cntr,1);
|
| 228 |
count++; |
| 229 |
memcpy(buf+count,&p->org_stuff_length, |
| 230 |
1);
|
| 231 |
count++; |
| 232 |
} |
| 233 |
|
| 234 |
if ( p->priv_flags & P_STD_BUFFER){
|
| 235 |
memcpy(buf+count,p->p_std,2);
|
| 236 |
count += 2;
|
| 237 |
} |
| 238 |
if ( p->priv_flags & PES_EXT_FLAG2){
|
| 239 |
memcpy(buf+count,&p->pes_ext_lngth,1);
|
| 240 |
count++; |
| 241 |
memcpy(buf+count,p->pes_ext, |
| 242 |
p->pes_ext_lngth); |
| 243 |
count += p->pes_ext_lngth; |
| 244 |
} |
| 245 |
} |
| 246 |
dummy = 0xFF;
|
| 247 |
for (i=0;i<p->stuffing;i++) { |
| 248 |
memcpy(buf+count,&dummy,1);
|
| 249 |
count++; |
| 250 |
} |
| 251 |
} else {
|
| 252 |
if (p->mpeg1_pad){
|
| 253 |
memcpy(buf+count,p->mpeg1_headr,p->mpeg1_pad); |
| 254 |
count += p->mpeg1_pad; |
| 255 |
} |
| 256 |
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_ONLY){
|
| 257 |
memcpy(buf+count,p->pts,5);
|
| 258 |
count += 5;
|
| 259 |
} |
| 260 |
else if ((p->flags2 & PTS_DTS_FLAGS) == |
| 261 |
PTS_DTS){
|
| 262 |
memcpy(buf+count,p->pts,5);
|
| 263 |
count += 5;
|
| 264 |
memcpy(buf+count,p->dts,5);
|
| 265 |
count += 5;
|
| 266 |
} |
| 267 |
} |
| 268 |
memcpy(buf+count,p->pes_pckt_data,p->length); |
| 269 |
count += p->length; |
| 270 |
} |
| 271 |
|
| 272 |
return count;
|
| 273 |
|
| 274 |
} |
| 275 |
|
| 276 |
void write_pes(int fd, pes_packet *p){ |
| 277 |
long length;
|
| 278 |
u8 *buf; |
| 279 |
int l = p->length+p->pes_hlength;
|
| 280 |
|
| 281 |
buf = (u8 *) malloc(l); |
| 282 |
length = cwrite_pes(buf,p,l); |
| 283 |
write(fd,buf,length); |
| 284 |
free(buf); |
| 285 |
} |
| 286 |
|
| 287 |
static unsigned int find_length(int f){ |
| 288 |
uint64_t p = 0;
|
| 289 |
uint64_t start = 0;
|
| 290 |
uint64_t q = 0;
|
| 291 |
int found = 0; |
| 292 |
u8 sync4[4];
|
| 293 |
int neof = 1; |
| 294 |
|
| 295 |
start = lseek(f,0,SEEK_CUR);
|
| 296 |
start -=2;
|
| 297 |
lseek(f,start,SEEK_SET); |
| 298 |
while ( neof > 0 && !found ){ |
| 299 |
p = lseek(f,0,SEEK_CUR);
|
| 300 |
neof = read(f,&sync4,4);
|
| 301 |
if (sync4[0] == 0x00 && sync4[1] == 0x00 && sync4[2] == 0x01) { |
| 302 |
switch ( sync4[3] ) { |
| 303 |
|
| 304 |
case PROG_STREAM_MAP:
|
| 305 |
case PRIVATE_STREAM2:
|
| 306 |
case PROG_STREAM_DIR:
|
| 307 |
case ECM_STREAM :
|
| 308 |
case EMM_STREAM :
|
| 309 |
case PADDING_STREAM :
|
| 310 |
case DSM_CC_STREAM :
|
| 311 |
case ISO13522_STREAM:
|
| 312 |
case PRIVATE_STREAM1:
|
| 313 |
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
|
| 314 |
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
|
| 315 |
found = 1;
|
| 316 |
break;
|
| 317 |
default:
|
| 318 |
q = lseek(f,0,SEEK_CUR);
|
| 319 |
break;
|
| 320 |
} |
| 321 |
} |
| 322 |
} |
| 323 |
q = lseek(f,0,SEEK_CUR);
|
| 324 |
lseek(f,start+2,SEEK_SET);
|
| 325 |
if (found) return (unsigned int)(q-start)-4-2; |
| 326 |
else return (unsigned int)(q-start-2); |
| 327 |
|
| 328 |
} |
| 329 |
|
| 330 |
|
| 331 |
void cread_pes(char *buf, pes_packet *p){ |
| 332 |
|
| 333 |
u8 count, dummy, check; |
| 334 |
int i;
|
| 335 |
uint64_t po = 0;
|
| 336 |
int c=0; |
| 337 |
|
| 338 |
switch ( p->stream_id ) {
|
| 339 |
|
| 340 |
case PROG_STREAM_MAP:
|
| 341 |
case PRIVATE_STREAM2:
|
| 342 |
case PROG_STREAM_DIR:
|
| 343 |
case ECM_STREAM :
|
| 344 |
case EMM_STREAM :
|
| 345 |
memcpy(p->pes_pckt_data,buf+c,p->length); |
| 346 |
return;
|
| 347 |
break;
|
| 348 |
case PADDING_STREAM :
|
| 349 |
p->padding = p->length; |
| 350 |
memcpy(p->pes_pckt_data,buf+c,p->length); |
| 351 |
return;
|
| 352 |
break;
|
| 353 |
case DSM_CC_STREAM :
|
| 354 |
case ISO13522_STREAM:
|
| 355 |
case PRIVATE_STREAM1:
|
| 356 |
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
|
| 357 |
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
|
| 358 |
break;
|
| 359 |
default:
|
| 360 |
return;
|
| 361 |
break;
|
| 362 |
} |
| 363 |
|
| 364 |
po = c; |
| 365 |
memcpy(&p->flags1,buf+c,1);
|
| 366 |
c++; |
| 367 |
if ( (p->flags1 & 0xC0) == 0x80 ) p->mpeg = 2; |
| 368 |
else p->mpeg = 1; |
| 369 |
|
| 370 |
if ( p->mpeg == 2 ){ |
| 371 |
memcpy(&p->flags2,buf+c,1);
|
| 372 |
c++; |
| 373 |
memcpy(&p->pes_hlength,buf+c,1);
|
| 374 |
c++; |
| 375 |
|
| 376 |
p->length -=p->pes_hlength+3;
|
| 377 |
count = p->pes_hlength; |
| 378 |
|
| 379 |
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_ONLY){
|
| 380 |
memcpy(p->pts,buf+c,5);
|
| 381 |
c += 5;
|
| 382 |
count -=5;
|
| 383 |
} else
|
| 384 |
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_DTS){
|
| 385 |
memcpy(p->pts,buf+c,5);
|
| 386 |
c += 5;
|
| 387 |
memcpy(p->dts,buf+c,5);
|
| 388 |
c += 5;
|
| 389 |
count -= 10;
|
| 390 |
} |
| 391 |
|
| 392 |
if (p->flags2 & ESCR_FLAG){
|
| 393 |
memcpy(p->escr,buf+c,6);
|
| 394 |
c += 6;
|
| 395 |
count -= 6;
|
| 396 |
} |
| 397 |
|
| 398 |
if (p->flags2 & ES_RATE_FLAG){
|
| 399 |
memcpy(p->es_rate,buf+c,3);
|
| 400 |
c += 6;
|
| 401 |
count -= 6;
|
| 402 |
} |
| 403 |
|
| 404 |
if (p->flags2 & DSM_TRICK_FLAG){
|
| 405 |
memcpy(&p->trick,buf+c,1);
|
| 406 |
c += 6;
|
| 407 |
count -= 1;
|
| 408 |
} |
| 409 |
|
| 410 |
if (p->flags2 & ADD_CPY_FLAG){
|
| 411 |
memcpy(&p->add_cpy,buf+c,1);
|
| 412 |
c++; |
| 413 |
count -= 1;
|
| 414 |
} |
| 415 |
|
| 416 |
if (p->flags2 & PES_CRC_FLAG){
|
| 417 |
memcpy(p->prev_pes_crc,buf+c,2);
|
| 418 |
c += 2;
|
| 419 |
count -= 2;
|
| 420 |
} |
| 421 |
|
| 422 |
if (p->flags2 & PES_EXT_FLAG){
|
| 423 |
memcpy(&p->priv_flags,buf+c,1);
|
| 424 |
c++; |
| 425 |
count -= 1;
|
| 426 |
|
| 427 |
if (p->priv_flags & PRIVATE_DATA){
|
| 428 |
memcpy(p->pes_priv_data,buf+c,16);
|
| 429 |
c += 16;
|
| 430 |
count -= 16;
|
| 431 |
} |
| 432 |
|
| 433 |
if (p->priv_flags & HEADER_FIELD){
|
| 434 |
memcpy(&p->pack_field_length,buf+c,1);
|
| 435 |
c++; |
| 436 |
p->pack_header = (u8 *) |
| 437 |
malloc(p->pack_field_length); |
| 438 |
memcpy(p->pack_header,buf+c, |
| 439 |
p->pack_field_length); |
| 440 |
c += p->pack_field_length; |
| 441 |
count -= 1+p->pack_field_length;
|
| 442 |
} |
| 443 |
|
| 444 |
if ( p->priv_flags & PACK_SEQ_CTR){
|
| 445 |
memcpy(&p->pck_sqnc_cntr,buf+c,1);
|
| 446 |
c++; |
| 447 |
memcpy(&p->org_stuff_length,buf+c,1);
|
| 448 |
c++; |
| 449 |
count -= 2;
|
| 450 |
} |
| 451 |
|
| 452 |
if ( p->priv_flags & P_STD_BUFFER){
|
| 453 |
memcpy(p->p_std,buf+c,2);
|
| 454 |
c += 2;
|
| 455 |
count -= 2;
|
| 456 |
} |
| 457 |
|
| 458 |
if ( p->priv_flags & PES_EXT_FLAG2){
|
| 459 |
memcpy(&p->pes_ext_lngth,buf+c,1);
|
| 460 |
c++; |
| 461 |
p->pes_ext = (u8 *) |
| 462 |
malloc(p->pes_ext_lngth); |
| 463 |
memcpy(p->pes_ext,buf+c, |
| 464 |
p->pes_ext_lngth); |
| 465 |
c += p->pes_ext_lngth; |
| 466 |
count -= 1+p->pes_ext_lngth;
|
| 467 |
} |
| 468 |
} |
| 469 |
p->stuffing = count; |
| 470 |
for(i = 0; i< count ;i++){ |
| 471 |
memcpy(&dummy,buf+c,1);
|
| 472 |
c++; |
| 473 |
} |
| 474 |
} else {
|
| 475 |
p->mpeg1_pad = 1;
|
| 476 |
check = p->flags1; |
| 477 |
while (check == 0xFF){ |
| 478 |
memcpy(&check,buf+c,1);
|
| 479 |
c++; |
| 480 |
p->mpeg1_pad++; |
| 481 |
} |
| 482 |
|
| 483 |
if ( (check & 0xC0) == 0x40){ |
| 484 |
memcpy(&check,buf+c,1);
|
| 485 |
c++; |
| 486 |
p->mpeg1_pad++; |
| 487 |
memcpy(&check,buf+c,1);
|
| 488 |
c++; |
| 489 |
p->mpeg1_pad++; |
| 490 |
} |
| 491 |
p->flags2 = 0;
|
| 492 |
p->length -= p->mpeg1_pad; |
| 493 |
|
| 494 |
c = po; |
| 495 |
if ( (check & 0x30)){ |
| 496 |
p->length ++; |
| 497 |
p->mpeg1_pad --; |
| 498 |
|
| 499 |
if (check == p->flags1){
|
| 500 |
p->pes_hlength = 0;
|
| 501 |
} else {
|
| 502 |
p->mpeg1_headr = (u8 *) |
| 503 |
malloc(p->mpeg1_pad); |
| 504 |
p->pes_hlength = p->mpeg1_pad; |
| 505 |
memcpy(p->mpeg1_headr,buf+c, |
| 506 |
p->mpeg1_pad); |
| 507 |
c += p->mpeg1_pad; |
| 508 |
} |
| 509 |
|
| 510 |
p->flags2 = (check & 0xF0) << 2; |
| 511 |
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_ONLY){
|
| 512 |
memcpy(p->pts,buf+c,5);
|
| 513 |
c += 5;
|
| 514 |
p->length -= 5;
|
| 515 |
p->pes_hlength += 5;
|
| 516 |
} |
| 517 |
else if ((p->flags2 & PTS_DTS_FLAGS) == |
| 518 |
PTS_DTS){
|
| 519 |
memcpy(p->pts,buf+c,5);
|
| 520 |
c += 5;
|
| 521 |
memcpy(p->dts,buf+c,5);
|
| 522 |
c += 5;
|
| 523 |
p->length -= 10;
|
| 524 |
p->pes_hlength += 10;
|
| 525 |
} |
| 526 |
} else {
|
| 527 |
p->mpeg1_headr = (u8 *) malloc(p->mpeg1_pad); |
| 528 |
p->pes_hlength = p->mpeg1_pad; |
| 529 |
memcpy(p->mpeg1_headr,buf+c, |
| 530 |
p->mpeg1_pad); |
| 531 |
c += p->mpeg1_pad; |
| 532 |
} |
| 533 |
} |
| 534 |
memcpy(p->pes_pckt_data,buf+c,p->length); |
| 535 |
} |
| 536 |
|
| 537 |
|
| 538 |
int read_pes(int f, pes_packet *p){ |
| 539 |
|
| 540 |
u8 sync4[4];
|
| 541 |
int found=0; |
| 542 |
uint64_t po = 0;
|
| 543 |
int neof = 1; |
| 544 |
u8 *buf; |
| 545 |
|
| 546 |
while (neof > 0 && !found) { |
| 547 |
po = lseek(f,0,SEEK_CUR);
|
| 548 |
if (po < 0) return -1; |
| 549 |
if ((neof = read(f,&sync4,4)) < 4) return -1; |
| 550 |
if (sync4[0] == 0x00 && sync4[1] == 0x00 && sync4[2] == 0x01) { |
| 551 |
p->stream_id = sync4[3];
|
| 552 |
switch ( sync4[3] ) { |
| 553 |
|
| 554 |
case PROG_STREAM_MAP:
|
| 555 |
case PRIVATE_STREAM2:
|
| 556 |
case PROG_STREAM_DIR:
|
| 557 |
case ECM_STREAM :
|
| 558 |
case EMM_STREAM :
|
| 559 |
case PADDING_STREAM :
|
| 560 |
case DSM_CC_STREAM :
|
| 561 |
case ISO13522_STREAM:
|
| 562 |
case PRIVATE_STREAM1:
|
| 563 |
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
|
| 564 |
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
|
| 565 |
if((neof = read(f,p->llength,2)) < 2) |
| 566 |
return -1; |
| 567 |
setl_pes(p); |
| 568 |
if (!p->length){
|
| 569 |
p->length = find_length(f); |
| 570 |
nl_pes(p); |
| 571 |
} |
| 572 |
found = 1;
|
| 573 |
break;
|
| 574 |
|
| 575 |
default:
|
| 576 |
if (lseek(f,po+1,SEEK_SET) < po+1) return -1; |
| 577 |
break;
|
| 578 |
} |
| 579 |
} else if(lseek(f,po+1,SEEK_SET) < po+1) return -1; |
| 580 |
} |
| 581 |
|
| 582 |
if (!found || !p->length) return 0; |
| 583 |
|
| 584 |
if (p->length >0){ |
| 585 |
buf = (u8 *) malloc(p->length); |
| 586 |
if((neof = read(f,buf,p->length))< p->length) return -1; |
| 587 |
cread_pes((char *)buf,p);
|
| 588 |
free(buf); |
| 589 |
} else return 0; |
| 590 |
|
| 591 |
return neof;
|
| 592 |
} |
| 593 |
|
| 594 |
/*
|
| 595 |
|
| 596 |
Transport Stream
|
| 597 |
|
| 598 |
*/
|
| 599 |
|
| 600 |
void init_ts(ts_packet *p){
|
| 601 |
p->pid[0] = 0; |
| 602 |
p->pid[1] = 0; |
| 603 |
p->flags = 0;
|
| 604 |
p->count = 0;
|
| 605 |
p->adapt_length = 0;
|
| 606 |
p->adapt_flags = 0;
|
| 607 |
p->splice_count = 0;
|
| 608 |
p->priv_dat_len = 0;
|
| 609 |
p->priv_dat = NULL;
|
| 610 |
p->adapt_ext_len = 0;
|
| 611 |
p->adapt_eflags = 0;
|
| 612 |
p->rest = 0;
|
| 613 |
p->stuffing = 0;
|
| 614 |
} |
| 615 |
|
| 616 |
void kill_ts(ts_packet *p){
|
| 617 |
if (p->priv_dat)
|
| 618 |
free(p->priv_dat); |
| 619 |
init_ts(p); |
| 620 |
} |
| 621 |
|
| 622 |
|
| 623 |
|
| 624 |
unsigned short pid_ts(ts_packet *p) |
| 625 |
{
|
| 626 |
return get_pid(p->pid);
|
| 627 |
} |
| 628 |
|
| 629 |
int cwrite_ts(u8 *buf, ts_packet *p, long length){ |
| 630 |
long count,i;
|
| 631 |
u8 sync,dummy; |
| 632 |
|
| 633 |
sync = 0x47;
|
| 634 |
memcpy(buf,&sync,1);
|
| 635 |
count = 1;
|
| 636 |
memcpy(buf+count,p->pid,2);
|
| 637 |
count += 2;
|
| 638 |
memcpy(buf+count,&p->flags,1);
|
| 639 |
count++; |
| 640 |
|
| 641 |
|
| 642 |
if (! (p->flags & ADAPT_FIELD) && (p->flags & PAYLOAD)){
|
| 643 |
memcpy(buf+count,p->data,184);
|
| 644 |
count += 184;
|
| 645 |
} else {
|
| 646 |
memcpy(buf+count,&p->adapt_length,1);
|
| 647 |
count++; |
| 648 |
memcpy(buf+count,&p->adapt_flags,1);
|
| 649 |
count++; |
| 650 |
|
| 651 |
if ( p->adapt_flags & PCR_FLAG ){
|
| 652 |
memcpy(buf+count, p->pcr,6);
|
| 653 |
count += 6;
|
| 654 |
} |
| 655 |
if ( p->adapt_flags & OPCR_FLAG ){
|
| 656 |
memcpy(buf+count, p->opcr,6);
|
| 657 |
count += 6;
|
| 658 |
} |
| 659 |
if ( p->adapt_flags & SPLICE_FLAG ){
|
| 660 |
memcpy(buf+count, &p->splice_count,1);
|
| 661 |
count++; |
| 662 |
} |
| 663 |
if( p->adapt_flags & TRANS_PRIV){
|
| 664 |
memcpy(buf+count,&p->priv_dat_len,1);
|
| 665 |
count++; |
| 666 |
memcpy(buf+count,p->priv_dat,p->priv_dat_len); |
| 667 |
count += p->priv_dat_len; |
| 668 |
} |
| 669 |
|
| 670 |
if( p->adapt_flags & ADAP_EXT_FLAG){
|
| 671 |
memcpy(buf+count,&p->adapt_ext_len,1);
|
| 672 |
count++; |
| 673 |
memcpy(buf+count,&p->adapt_eflags,1);
|
| 674 |
count++; |
| 675 |
|
| 676 |
if( p->adapt_eflags & LTW_FLAG){
|
| 677 |
memcpy(buf+count,p->ltw,2);
|
| 678 |
count += 2;
|
| 679 |
} |
| 680 |
if( p->adapt_eflags & PIECE_RATE){
|
| 681 |
memcpy(buf+count,p->piece_rate,3);
|
| 682 |
count += 3;
|
| 683 |
} |
| 684 |
if( p->adapt_eflags & SEAM_SPLICE){
|
| 685 |
memcpy(buf+count,p->dts,5);
|
| 686 |
count += 5;
|
| 687 |
} |
| 688 |
} |
| 689 |
dummy = 0xFF;
|
| 690 |
for(i=0; i < p->stuffing ; i++){ |
| 691 |
memcpy(buf+count,&dummy,1);
|
| 692 |
count++; |
| 693 |
} |
| 694 |
if (p->flags & PAYLOAD){
|
| 695 |
memcpy(buf+count,p->data,p->rest); |
| 696 |
count += p->rest; |
| 697 |
} |
| 698 |
} |
| 699 |
|
| 700 |
|
| 701 |
return count;
|
| 702 |
} |
| 703 |
|
| 704 |
void write_ts(int fd, ts_packet *p){ |
| 705 |
long length;
|
| 706 |
u8 buf[TS_SIZE]; |
| 707 |
|
| 708 |
length = cwrite_ts(buf,p,TS_SIZE); |
| 709 |
write(fd,buf,length); |
| 710 |
} |
| 711 |
|
| 712 |
int read_ts (int f, ts_packet *p){ |
| 713 |
u8 sync; |
| 714 |
int found=0; |
| 715 |
uint64_t po,q; |
| 716 |
int neof = 1; |
| 717 |
|
| 718 |
sync=0;
|
| 719 |
while (neof > 0 && !found) { |
| 720 |
neof = read(f,&sync,1);
|
| 721 |
if (sync == 0x47) |
| 722 |
found = 1;
|
| 723 |
} |
| 724 |
neof = read(f,p->pid,2);
|
| 725 |
neof = read(f,&p->flags,1);
|
| 726 |
p->count = p->flags & COUNT_MASK; |
| 727 |
|
| 728 |
if (!(p->flags & ADAPT_FIELD) && (p->flags & PAYLOAD)){
|
| 729 |
//no adapt. field only payload
|
| 730 |
neof = read(f,p->data,184);
|
| 731 |
p->rest = 184;
|
| 732 |
return neof;
|
| 733 |
} |
| 734 |
|
| 735 |
if ( p->flags & ADAPT_FIELD ) {
|
| 736 |
// adaption field
|
| 737 |
neof = read(f,&p->adapt_length,1);
|
| 738 |
po = lseek(f,0,SEEK_CUR);
|
| 739 |
neof = read(f,&p->adapt_flags,1);
|
| 740 |
|
| 741 |
if ( p->adapt_flags & PCR_FLAG )
|
| 742 |
neof = read(f, p->pcr,6);
|
| 743 |
|
| 744 |
if ( p->adapt_flags & OPCR_FLAG )
|
| 745 |
neof = read(f, p->opcr,6);
|
| 746 |
|
| 747 |
if ( p->adapt_flags & SPLICE_FLAG )
|
| 748 |
neof = read(f, &p->splice_count,1);
|
| 749 |
|
| 750 |
if( p->adapt_flags & TRANS_PRIV){
|
| 751 |
neof = read(f,&p->priv_dat_len,1);
|
| 752 |
p->priv_dat = (u8 *) malloc(p->priv_dat_len); |
| 753 |
neof = read(f,p->priv_dat,p->priv_dat_len); |
| 754 |
} |
| 755 |
|
| 756 |
if( p->adapt_flags & ADAP_EXT_FLAG){
|
| 757 |
neof = read(f,&p->adapt_ext_len,1);
|
| 758 |
neof = read(f,&p->adapt_eflags,1);
|
| 759 |
if( p->adapt_eflags & LTW_FLAG)
|
| 760 |
neof = read(f,p->ltw,2);
|
| 761 |
|
| 762 |
if( p->adapt_eflags & PIECE_RATE)
|
| 763 |
neof = read(f,p->piece_rate,3);
|
| 764 |
|
| 765 |
if( p->adapt_eflags & SEAM_SPLICE)
|
| 766 |
neof = read(f,p->dts,5);
|
| 767 |
} |
| 768 |
q = lseek(f,0,SEEK_CUR);
|
| 769 |
p->stuffing = p->adapt_length -(q-po); |
| 770 |
p->rest = 183-p->adapt_length;
|
| 771 |
lseek(f,q+p->stuffing,SEEK_SET); |
| 772 |
if (p->flags & PAYLOAD) // payload |
| 773 |
neof = read(f,p->data,p->rest); |
| 774 |
else
|
| 775 |
lseek(f,q+p->rest,SEEK_SET); |
| 776 |
} |
| 777 |
return neof;
|
| 778 |
} |
| 779 |
|
| 780 |
void cread_ts (char *buf, ts_packet *p, long length){ |
| 781 |
u8 sync; |
| 782 |
int found=0; |
| 783 |
uint64_t po,q; |
| 784 |
long count=0; |
| 785 |
|
| 786 |
sync=0;
|
| 787 |
while (count < length && !found) {
|
| 788 |
sync=buf[count]; |
| 789 |
count++; |
| 790 |
if (sync == 0x47) |
| 791 |
found = 1;
|
| 792 |
} |
| 793 |
memcpy(p->pid,buf+count,2);
|
| 794 |
count += 2;
|
| 795 |
p->flags = buf[count]; |
| 796 |
count++; |
| 797 |
p->count = p->flags & COUNT_MASK; |
| 798 |
|
| 799 |
if (!(p->flags & ADAPT_FIELD) && (p->flags & PAYLOAD)){
|
| 800 |
//no adapt. field only payload
|
| 801 |
memcpy(p->data,buf+count,184);
|
| 802 |
p->rest = 184;
|
| 803 |
return;
|
| 804 |
} |
| 805 |
|
| 806 |
if ( p->flags & ADAPT_FIELD ) {
|
| 807 |
// adaption field
|
| 808 |
p->adapt_length = buf[count]; |
| 809 |
count++; |
| 810 |
po = count; |
| 811 |
memcpy(&p->adapt_flags,buf+count,1);
|
| 812 |
count++; |
| 813 |
|
| 814 |
if ( p->adapt_flags & PCR_FLAG ){
|
| 815 |
memcpy( p->pcr,buf+count,6);
|
| 816 |
count += 6;
|
| 817 |
} |
| 818 |
if ( p->adapt_flags & OPCR_FLAG ){
|
| 819 |
memcpy( p->opcr,buf+count,6);
|
| 820 |
count += 6;
|
| 821 |
} |
| 822 |
if ( p->adapt_flags & SPLICE_FLAG ){
|
| 823 |
memcpy( &p->splice_count,buf+count,1);
|
| 824 |
count++; |
| 825 |
} |
| 826 |
if( p->adapt_flags & TRANS_PRIV){
|
| 827 |
memcpy(&p->priv_dat_len,buf+count,1);
|
| 828 |
count++; |
| 829 |
p->priv_dat = (u8 *) malloc(p->priv_dat_len); |
| 830 |
memcpy(p->priv_dat,buf+count,p->priv_dat_len); |
| 831 |
count += p->priv_dat_len; |
| 832 |
} |
| 833 |
|
| 834 |
if( p->adapt_flags & ADAP_EXT_FLAG){
|
| 835 |
memcpy(&p->adapt_ext_len,buf+count,1);
|
| 836 |
count++; |
| 837 |
memcpy(&p->adapt_eflags,buf+count,1);
|
| 838 |
count++; |
| 839 |
if( p->adapt_eflags & LTW_FLAG){
|
| 840 |
memcpy(p->ltw,buf+count,2);
|
| 841 |
count += 2;
|
| 842 |
} |
| 843 |
if( p->adapt_eflags & PIECE_RATE){
|
| 844 |
memcpy(p->piece_rate,buf+count,3);
|
| 845 |
count += 3;
|
| 846 |
} |
| 847 |
if( p->adapt_eflags & SEAM_SPLICE){
|
| 848 |
memcpy(p->dts,buf+count,5);
|
| 849 |
count += 5;
|
| 850 |
} |
| 851 |
} |
| 852 |
q = count; |
| 853 |
p->stuffing = p->adapt_length -(q-po); |
| 854 |
p->rest = 183-p->adapt_length;
|
| 855 |
count = q+p->stuffing; |
| 856 |
if (p->flags & PAYLOAD){ // payload |
| 857 |
memcpy(p->data,buf+count,p->rest); |
| 858 |
count += p->rest; |
| 859 |
} else
|
| 860 |
count = q+p->rest; |
| 861 |
} |
| 862 |
} |
| 863 |
|
| 864 |
|
| 865 |
/*
|
| 866 |
|
| 867 |
Program Stream
|
| 868 |
|
| 869 |
*/
|
| 870 |
|
| 871 |
|
| 872 |
void init_ps(ps_packet *p)
|
| 873 |
{
|
| 874 |
p->stuff_length=0xF8;
|
| 875 |
p->data = NULL;
|
| 876 |
p->sheader_length = 0;
|
| 877 |
p->audio_bound = 0;
|
| 878 |
p->video_bound = 0;
|
| 879 |
p->npes = 0;
|
| 880 |
p->mpeg = 2;
|
| 881 |
} |
| 882 |
|
| 883 |
void kill_ps(ps_packet *p)
|
| 884 |
{
|
| 885 |
if (p->data)
|
| 886 |
free(p->data); |
| 887 |
init_ps(p); |
| 888 |
} |
| 889 |
|
| 890 |
void setlength_ps(ps_packet *p)
|
| 891 |
{
|
| 892 |
short *ll;
|
| 893 |
ll = (short *) p->sheader_llength;
|
| 894 |
if (p->mpeg == 2) |
| 895 |
p->sheader_length = ntohs(*ll) - 6;
|
| 896 |
else
|
| 897 |
p->sheader_length = ntohs(*ll); |
| 898 |
} |
| 899 |
|
| 900 |
static void setl_ps(ps_packet *p) |
| 901 |
{
|
| 902 |
setlength_ps(p); |
| 903 |
p->data = (u8 *) malloc(p->sheader_length); |
| 904 |
} |
| 905 |
|
| 906 |
int mux_ps(ps_packet *p)
|
| 907 |
{
|
| 908 |
u32 mux = 0;
|
| 909 |
u8 *i = (u8 *)&mux; |
| 910 |
|
| 911 |
i[1] = p->mux_rate[0]; |
| 912 |
i[2] = p->mux_rate[1]; |
| 913 |
i[3] = p->mux_rate[2]; |
| 914 |
mux = ntohl(mux); |
| 915 |
mux = (mux >>2);
|
| 916 |
return mux;
|
| 917 |
} |
| 918 |
|
| 919 |
int rate_ps(ps_packet *p)
|
| 920 |
{
|
| 921 |
u32 rate=0;
|
| 922 |
u8 *i= (u8 *) &rate; |
| 923 |
|
| 924 |
i[1] = p->rate_bound[0] & 0x7F; |
| 925 |
i[2] = p->rate_bound[1]; |
| 926 |
i[3] = p->rate_bound[2]; |
| 927 |
|
| 928 |
rate = ntohl(rate); |
| 929 |
rate = (rate >> 1);
|
| 930 |
return rate;
|
| 931 |
} |
| 932 |
|
| 933 |
|
| 934 |
u32 scr_base_ps(ps_packet *p) // only 32 bit!!
|
| 935 |
{
|
| 936 |
u32 base = 0;
|
| 937 |
u8 *buf = (u8 *)&base; |
| 938 |
|
| 939 |
buf[0] |= (long int)((p->scr[0] & 0x18) << 3); |
| 940 |
buf[0] |= (long int)((p->scr[0] & 0x03) << 4); |
| 941 |
buf[0] |= (long int)((p->scr[1] & 0xF0) >> 4); |
| 942 |
|
| 943 |
buf[1] |= (long int)((p->scr[1] & 0x0F) << 4); |
| 944 |
buf[1] |= (long int)((p->scr[2] & 0xF0) >> 4); |
| 945 |
|
| 946 |
buf[2] |= (long int)((p->scr[2] & 0x08) << 4); |
| 947 |
buf[2] |= (long int)((p->scr[2] & 0x03) << 5); |
| 948 |
buf[2] |= (long int)((p->scr[3] & 0xF8) >> 3); |
| 949 |
|
| 950 |
buf[3] |= (long int)((p->scr[3] & 0x07) << 5); |
| 951 |
buf[3] |= (long int)((p->scr[4] & 0xF8) >> 3); |
| 952 |
|
| 953 |
base = ntohl(base); |
| 954 |
return base;
|
| 955 |
} |
| 956 |
|
| 957 |
u16 scr_ext_ps(ps_packet *p) |
| 958 |
{
|
| 959 |
short ext = 0; |
| 960 |
|
| 961 |
ext = (short)(p->scr[5] >> 1); |
| 962 |
ext += (short) (p->scr[4] & 0x03) * 128; |
| 963 |
|
| 964 |
return ext;
|
| 965 |
} |
| 966 |
|
| 967 |
int cwrite_ps(u8 *buf, ps_packet *p, long length) |
| 968 |
{
|
| 969 |
long count,i;
|
| 970 |
u8 headr1[4] = {0x00, 0x00, 0x01, 0xBA }; |
| 971 |
u8 headr2[4] = {0x00, 0x00, 0x01, 0xBB }; |
| 972 |
u8 buffy = 0xFF;
|
| 973 |
|
| 974 |
|
| 975 |
memcpy(buf,headr1,4);
|
| 976 |
count = 4;
|
| 977 |
if (p->mpeg == 2){ |
| 978 |
memcpy(buf+count,p->scr,6);
|
| 979 |
count += 6;
|
| 980 |
memcpy(buf+count,p->mux_rate,3);
|
| 981 |
count += 3;
|
| 982 |
memcpy(buf+count,&p->stuff_length,1);
|
| 983 |
count++; |
| 984 |
for(i=0; i< (p->stuff_length & 3); i++){ |
| 985 |
memcpy(buf+count,&buffy,1);
|
| 986 |
count++; |
| 987 |
} |
| 988 |
} else {
|
| 989 |
memcpy(buf+count,p->scr,5);
|
| 990 |
count += 5;
|
| 991 |
memcpy(buf+count,p->mux_rate,3);
|
| 992 |
count += 3;
|
| 993 |
} |
| 994 |
if (p->sheader_length){
|
| 995 |
memcpy(buf+count,headr2,4);
|
| 996 |
count += 4;
|
| 997 |
memcpy(buf+count,p->sheader_llength,2);
|
| 998 |
count += 2;
|
| 999 |
if ( p->mpeg == 2){ |
| 1000 |
memcpy(buf+count,p->rate_bound,3);
|
| 1001 |
count += 3;
|
| 1002 |
memcpy(buf+count,&p->audio_bound,1);
|
| 1003 |
count++; |
| 1004 |
memcpy(buf+count,&p->video_bound,1);
|
| 1005 |
count++; |
| 1006 |
memcpy(buf+count,&p->reserved,1);
|
| 1007 |
count++; |
| 1008 |
} |
| 1009 |
memcpy(buf+count,p->data,p->sheader_length); |
| 1010 |
count += p->sheader_length; |
| 1011 |
} |
| 1012 |
|
| 1013 |
return count;
|
| 1014 |
} |
| 1015 |
|
| 1016 |
void write_ps(int fd, ps_packet *p){ |
| 1017 |
long length;
|
| 1018 |
u8 buf[PS_MAX]; |
| 1019 |
|
| 1020 |
length = cwrite_ps(buf,p,PS_MAX); |
| 1021 |
write(fd,buf,length); |
| 1022 |
} |
| 1023 |
|
| 1024 |
int read_ps (int f, ps_packet *p){ |
| 1025 |
u8 headr[4];
|
| 1026 |
pes_packet pes; |
| 1027 |
int i,done;
|
| 1028 |
int found=0; |
| 1029 |
uint64_t po = 0;
|
| 1030 |
uint64_t q = 0;
|
| 1031 |
long count = 0; |
| 1032 |
int neof = 1; |
| 1033 |
|
| 1034 |
po = lseek(f,0,SEEK_CUR);
|
| 1035 |
while (neof > 0 && !found && count < MAX_SEARCH) { |
| 1036 |
neof = read(f,&headr,4);
|
| 1037 |
if (headr[0] == 0x00 && headr[1] == 0x00 && headr[2] == 0x01){ |
| 1038 |
if ( headr[3] == 0xBA ) |
| 1039 |
found = 1;
|
| 1040 |
else
|
| 1041 |
if ( headr[3] == 0xB9 ) break; |
| 1042 |
else lseek(f,po+1,SEEK_SET); |
| 1043 |
} |
| 1044 |
count++; |
| 1045 |
} |
| 1046 |
|
| 1047 |
if (found){
|
| 1048 |
neof = read(f,p->scr,6);
|
| 1049 |
if (p->scr[0] & 0x40) |
| 1050 |
p->mpeg = 2;
|
| 1051 |
else
|
| 1052 |
p->mpeg = 1;
|
| 1053 |
|
| 1054 |
if (p->mpeg == 2){ |
| 1055 |
neof = read(f,p->mux_rate,3);
|
| 1056 |
neof = read(f,&p->stuff_length,1);
|
| 1057 |
po = lseek(f,0,SEEK_CUR);
|
| 1058 |
lseek(f,po+(p->stuff_length & 3),SEEK_SET);
|
| 1059 |
} else {
|
| 1060 |
p->mux_rate[0] = p->scr[5]; //mpeg1 scr is only 5 bytes |
| 1061 |
neof = read(f,p->mux_rate+1,2); |
| 1062 |
} |
| 1063 |
|
| 1064 |
po = lseek(f,0,SEEK_CUR);
|
| 1065 |
neof = read(f,headr,4);
|
| 1066 |
if (headr[0] == 0x00 && headr[1] == 0x00 && |
| 1067 |
headr[2] == 0x01 && headr[3] == 0xBB ) { |
| 1068 |
neof = read(f,p->sheader_llength,2);
|
| 1069 |
setl_ps(p); |
| 1070 |
if (p->mpeg == 2){ |
| 1071 |
neof = read(f,p->rate_bound,3);
|
| 1072 |
neof = read(f,&p->audio_bound,1);
|
| 1073 |
neof = read(f,&p->video_bound,1);
|
| 1074 |
neof = read(f,&p->reserved,1);
|
| 1075 |
} |
| 1076 |
neof = read(f,p->data,p->sheader_length); |
| 1077 |
} else {
|
| 1078 |
lseek(f,po,SEEK_SET); |
| 1079 |
p->sheader_length = 0;
|
| 1080 |
} |
| 1081 |
|
| 1082 |
i = 0;
|
| 1083 |
done = 0;
|
| 1084 |
q = lseek(f,0,SEEK_CUR);
|
| 1085 |
do {
|
| 1086 |
po = lseek(f,0,SEEK_CUR);
|
| 1087 |
neof = read(f,headr,4);
|
| 1088 |
lseek(f,po,SEEK_SET); |
| 1089 |
if ( headr[0] == 0x00 && headr[1] == 0x00 |
| 1090 |
&& headr[2] == 0x01 && headr[3] != 0xBA){ |
| 1091 |
init_pes(&pes); |
| 1092 |
neof = read_pes(f,&pes); |
| 1093 |
i++; |
| 1094 |
} else done = 1; |
| 1095 |
kill_pes(&pes); |
| 1096 |
} while ( neof > 0 && !done); |
| 1097 |
p->npes = i; |
| 1098 |
lseek(f,q,SEEK_SET); |
| 1099 |
} |
| 1100 |
return neof;
|
| 1101 |
} |
| 1102 |
|
| 1103 |
void cread_ps (char *buf, ps_packet *p, long length){ |
| 1104 |
u8 *headr; |
| 1105 |
pes_packet pes; |
| 1106 |
int i,done;
|
| 1107 |
int found=0; |
| 1108 |
uint64_t po = 0;
|
| 1109 |
uint64_t q = 0;
|
| 1110 |
long count = 0; |
| 1111 |
long c = 0; |
| 1112 |
|
| 1113 |
po = c; |
| 1114 |
while ( count < length && !found && count < MAX_SEARCH) {
|
| 1115 |
headr = (u8 *)buf+c; |
| 1116 |
c += 4;
|
| 1117 |
if (headr[0] == 0x00 && headr[1] == 0x00 && headr[2] == 0x01){ |
| 1118 |
if ( headr[3] == 0xBA ) |
| 1119 |
found = 1;
|
| 1120 |
else
|
| 1121 |
if ( headr[3] == 0xB9 ) break; |
| 1122 |
else c = po+1; |
| 1123 |
} |
| 1124 |
count++; |
| 1125 |
} |
| 1126 |
|
| 1127 |
if (found){
|
| 1128 |
memcpy(p->scr,buf+c,6);
|
| 1129 |
c += 6;
|
| 1130 |
if (p->scr[0] & 0x40) |
| 1131 |
p->mpeg = 2;
|
| 1132 |
else
|
| 1133 |
p->mpeg = 1;
|
| 1134 |
|
| 1135 |
if (p->mpeg == 2){ |
| 1136 |
memcpy(p->mux_rate,buf+c,3);
|
| 1137 |
c += 3;
|
| 1138 |
memcpy(&p->stuff_length,buf+c,1);
|
| 1139 |
c++; |
| 1140 |
po = c; |
| 1141 |
c = po+(p->stuff_length & 3);
|
| 1142 |
} else {
|
| 1143 |
p->mux_rate[0] = p->scr[5]; //mpeg1 scr is only 5 bytes |
| 1144 |
memcpy(p->mux_rate+1,buf+c,2); |
| 1145 |
c += 2;
|
| 1146 |
} |
| 1147 |
|
| 1148 |
po = c; |
| 1149 |
headr = (u8 *)buf+c; |
| 1150 |
c += 4;
|
| 1151 |
if (headr[0] == 0x00 && headr[1] == 0x00 && |
| 1152 |
headr[2] == 0x01 && headr[3] == 0xBB ) { |
| 1153 |
memcpy(p->sheader_llength,buf+c,2);
|
| 1154 |
c += 2;
|
| 1155 |
setl_ps(p); |
| 1156 |
if (p->mpeg == 2){ |
| 1157 |
memcpy(p->rate_bound,buf+c,3);
|
| 1158 |
c += 3;
|
| 1159 |
memcpy(&p->audio_bound,buf+c,1);
|
| 1160 |
c++; |
| 1161 |
memcpy(&p->video_bound,buf+c,1);
|
| 1162 |
c++; |
| 1163 |
memcpy(&p->reserved,buf+c,1);
|
| 1164 |
c++; |
| 1165 |
} |
| 1166 |
memcpy(p->data,buf+c,p->sheader_length); |
| 1167 |
c += p->sheader_length; |
| 1168 |
} else {
|
| 1169 |
c = po; |
| 1170 |
p->sheader_length = 0;
|
| 1171 |
} |
| 1172 |
|
| 1173 |
i = 0;
|
| 1174 |
done = 0;
|
| 1175 |
q = c; |
| 1176 |
do {
|
| 1177 |
headr = (u8 *)buf+c; |
| 1178 |
if ( headr[0] == 0x00 && headr[1] == 0x00 |
| 1179 |
&& headr[2] == 0x01 && headr[3] != 0xBA){ |
| 1180 |
init_pes(&pes); |
| 1181 |
// cread_pes(buf+c,&pes);
|
| 1182 |
i++; |
| 1183 |
} else done = 1; |
| 1184 |
kill_pes(&pes); |
| 1185 |
} while (c < length && !done);
|
| 1186 |
p->npes = i; |
| 1187 |
c = q; |
| 1188 |
} |
| 1189 |
} |
| 1190 |
|
| 1191 |
|
| 1192 |
|
| 1193 |
|
| 1194 |
|
| 1195 |
|
| 1196 |
|
| 1197 |
/*
|
| 1198 |
conversion
|
| 1199 |
*/
|
| 1200 |
|
| 1201 |
void init_trans(trans *p)
|
| 1202 |
{
|
| 1203 |
int i;
|
| 1204 |
|
| 1205 |
p->found = 0;
|
| 1206 |
p->pes = 0;
|
| 1207 |
p->is_full = 0;
|
| 1208 |
p->pes_start = 0;
|
| 1209 |
p->pes_started = 0;
|
| 1210 |
p->set = 0;
|
| 1211 |
|
| 1212 |
for (i = 0; i < MASKL*MAXFILT ; i++){ |
| 1213 |
p->mask[i] = 0;
|
| 1214 |
p->filt[i] = 0;
|
| 1215 |
} |
| 1216 |
for (i = 0; i < MAXFILT ; i++){ |
| 1217 |
p->sec[i].found = 0;
|
| 1218 |
p->sec[i].length = 0;
|
| 1219 |
} |
| 1220 |
} |
| 1221 |
|
| 1222 |
int set_trans_filt(trans *p, int filtn, u16 pid, u8 *mask, u8 *filt, int pes) |
| 1223 |
{
|
| 1224 |
int i;
|
| 1225 |
int off;
|
| 1226 |
|
| 1227 |
if ( filtn > MAXFILT-1 || filtn<0 ) return -1; |
| 1228 |
p->pid[filtn] = pid; |
| 1229 |
if (pes) p->pes |= (tflags)(1 << filtn); |
| 1230 |
else {
|
| 1231 |
off = MASKL*filtn; |
| 1232 |
p->pes &= ~((tflags) (1 << filtn) );
|
| 1233 |
for (i = 0; i < MASKL ; i++){ |
| 1234 |
p->mask[off+i] = mask[i]; |
| 1235 |
p->filt[off+i] = filt[i]; |
| 1236 |
} |
| 1237 |
} |
| 1238 |
p->set |= (tflags) (1 << filtn);
|
| 1239 |
return 0; |
| 1240 |
} |
| 1241 |
|
| 1242 |
void clear_trans_filt(trans *p,int filtn) |
| 1243 |
{
|
| 1244 |
int i;
|
| 1245 |
|
| 1246 |
p->set &= ~((tflags) (1 << filtn) );
|
| 1247 |
p->pes &= ~((tflags) (1 << filtn) );
|
| 1248 |
p->is_full &= ~((tflags) (1 << filtn) );
|
| 1249 |
p->pes_start &= ~((tflags) (1 << filtn) );
|
| 1250 |
p->pes_started &= ~((tflags) (1 << filtn) );
|
| 1251 |
|
| 1252 |
for (i = MASKL*filtn; i < MASKL*(filtn+1) ; i++){ |
| 1253 |
p->mask[i] = 0;
|
| 1254 |
p->filt[i] = 0;
|
| 1255 |
} |
| 1256 |
p->sec[filtn].found = 0;
|
| 1257 |
p->sec[filtn].length = 0;
|
| 1258 |
} |
| 1259 |
|
| 1260 |
int filt_is_set(trans *p, int filtn) |
| 1261 |
{
|
| 1262 |
if (p->set & ((tflags)(1 << filtn))) return 1; |
| 1263 |
return 0; |
| 1264 |
} |
| 1265 |
|
| 1266 |
int pes_is_set(trans *p, int filtn) |
| 1267 |
{
|
| 1268 |
if (p->pes & ((tflags)(1 << filtn))) return 1; |
| 1269 |
return 0; |
| 1270 |
} |
| 1271 |
|
| 1272 |
int pes_is_started(trans *p, int filtn) |
| 1273 |
{
|
| 1274 |
if (p->pes_started & ((tflags)(1 << filtn))) return 1; |
| 1275 |
return 0; |
| 1276 |
} |
| 1277 |
|
| 1278 |
int pes_is_start(trans *p, int filtn) |
| 1279 |
{
|
| 1280 |
if (p->pes_start & ((tflags)(1 << filtn))) return 1; |
| 1281 |
return 0; |
| 1282 |
} |
| 1283 |
|
| 1284 |
int filt_is_ready(trans *p,int filtn) |
| 1285 |
{
|
| 1286 |
if (p->is_full & ((tflags)(1 << filtn))) return 1; |
| 1287 |
return 0; |
| 1288 |
} |
| 1289 |
|
| 1290 |
void trans_filt(u8 *buf, int count, trans *p) |
| 1291 |
{
|
| 1292 |
int c=0; |
| 1293 |
//fprintf(stderr,"trans_filt\n");
|
| 1294 |
|
| 1295 |
|
| 1296 |
while (c < count && p->found <1 ){ |
| 1297 |
if ( buf[c] == 0x47) p->found = 1; |
| 1298 |
c++; |
| 1299 |
p->packet[0] = 0x47; |
| 1300 |
} |
| 1301 |
if (c == count) return; |
| 1302 |
|
| 1303 |
while( c < count && p->found < 188 && p->found > 0 ){ |
| 1304 |
p->packet[p->found] = buf[c]; |
| 1305 |
c++; |
| 1306 |
p->found++; |
| 1307 |
} |
| 1308 |
if (p->found == 188){ |
| 1309 |
p->found = 0;
|
| 1310 |
filter(p); |
| 1311 |
} |
| 1312 |
|
| 1313 |
if (c < count) trans_filt(buf+c,count-c,p);
|
| 1314 |
} |
| 1315 |
|
| 1316 |
|
| 1317 |
void filter(trans *p)
|
| 1318 |
{
|
| 1319 |
int l,c;
|
| 1320 |
int tpid;
|
| 1321 |
u8 flag,flags; |
| 1322 |
u8 adapt_length = 0;
|
| 1323 |
u8 cpid[2];
|
| 1324 |
|
| 1325 |
|
| 1326 |
// fprintf(stderr,"filter\n");
|
| 1327 |
|
| 1328 |
cpid[0] = p->packet[1]; |
| 1329 |
cpid[1] = p->packet[2]; |
| 1330 |
tpid = get_pid(cpid); |
| 1331 |
|
| 1332 |
flag = cpid[0];
|
| 1333 |
flags = p->packet[3];
|
| 1334 |
|
| 1335 |
if ( flags & ADAPT_FIELD ) {
|
| 1336 |
// adaption field
|
| 1337 |
adapt_length = p->packet[4];
|
| 1338 |
} |
| 1339 |
|
| 1340 |
c = 5 + adapt_length - (int)(!(flags & ADAPT_FIELD)); |
| 1341 |
if (flags & PAYLOAD){
|
| 1342 |
for ( l = 0; l < MAXFILT ; l++){ |
| 1343 |
if ( filt_is_set(p,l) ) {
|
| 1344 |
if ( p->pid[l] == tpid) {
|
| 1345 |
if ( pes_is_set(p,l) ){
|
| 1346 |
if (cpid[0] & PAY_START){ |
| 1347 |
p->pes_started |= |
| 1348 |
(tflags) |
| 1349 |
(1 << l);
|
| 1350 |
p->pes_start |= |
| 1351 |
(tflags) |
| 1352 |
(1 << l);
|
| 1353 |
} else {
|
| 1354 |
p->pes_start &= ~ |
| 1355 |
((tflags) |
| 1356 |
(1 << l));
|
| 1357 |
} |
| 1358 |
pes_filter(p,l,c); |
| 1359 |
} else {
|
| 1360 |
sec_filter(p,l,c); |
| 1361 |
} |
| 1362 |
} |
| 1363 |
} |
| 1364 |
} |
| 1365 |
} |
| 1366 |
} |
| 1367 |
|
| 1368 |
|
| 1369 |
void pes_filter(trans *p, int filtn, int off) |
| 1370 |
{
|
| 1371 |
int count,c;
|
| 1372 |
u8 *buf; |
| 1373 |
|
| 1374 |
if (filtn < 0 || filtn >= MAXFILT) return; |
| 1375 |
|
| 1376 |
count = 188 - off;
|
| 1377 |
c = 188*filtn;
|
| 1378 |
buf = p->packet+off; |
| 1379 |
if (pes_is_started(p,filtn)){
|
| 1380 |
p->is_full |= (tflags) (1 << filtn);
|
| 1381 |
memcpy(p->transbuf+c,buf,count); |
| 1382 |
p->transcount[filtn] = count; |
| 1383 |
} |
| 1384 |
} |
| 1385 |
|
| 1386 |
section *get_filt_sec(trans *p, int filtn)
|
| 1387 |
{
|
| 1388 |
section *sec; |
| 1389 |
|
| 1390 |
sec = &p->sec[filtn]; |
| 1391 |
p->is_full &= ~((tflags) (1 << filtn) );
|
| 1392 |
return sec;
|
| 1393 |
} |
| 1394 |
|
| 1395 |
int get_filt_buf(trans *p, int filtn,u8 **buf) |
| 1396 |
{
|
| 1397 |
*buf = p->transbuf+188*filtn;
|
| 1398 |
p->is_full &= ~((tflags) (1 << filtn) );
|
| 1399 |
return p->transcount[filtn];
|
| 1400 |
} |
| 1401 |
|
| 1402 |
|
| 1403 |
|
| 1404 |
|
| 1405 |
void sec_filter(trans *p, int filtn, int off) |
| 1406 |
{
|
| 1407 |
int i,j;
|
| 1408 |
int error;
|
| 1409 |
int count,c;
|
| 1410 |
u8 *buf, *secbuf; |
| 1411 |
section *sec; |
| 1412 |
|
| 1413 |
// fprintf(stderr,"sec_filter\n");
|
| 1414 |
|
| 1415 |
if (filtn < 0 || filtn >= MAXFILT) return; |
| 1416 |
|
| 1417 |
count = 188 - off;
|
| 1418 |
c = 0;
|
| 1419 |
buf = p->packet+off; |
| 1420 |
sec = &p->sec[filtn]; |
| 1421 |
secbuf = sec->payload; |
| 1422 |
if(!filt_is_ready(p,filtn)){
|
| 1423 |
p->is_full &= ~((tflags) (1 << filtn) );
|
| 1424 |
sec->found = 0;
|
| 1425 |
sec->length = 0;
|
| 1426 |
} |
| 1427 |
|
| 1428 |
if ( !sec->found ){
|
| 1429 |
c = buf[c]+1;
|
| 1430 |
if (c >= count) return; |
| 1431 |
sec->id = buf[c]; |
| 1432 |
secbuf[0] = buf[c];
|
| 1433 |
c++; |
| 1434 |
sec->found++; |
| 1435 |
sec->length = 0;
|
| 1436 |
} |
| 1437 |
|
| 1438 |
while ( c < count && sec->found < 3){ |
| 1439 |
secbuf[sec->found] = buf[c]; |
| 1440 |
c++; |
| 1441 |
sec->found++; |
| 1442 |
} |
| 1443 |
if (c == count) return; |
| 1444 |
|
| 1445 |
if (!sec->length && sec->found == 3){ |
| 1446 |
sec->length |= ((secbuf[1] & 0x0F) << 8); |
| 1447 |
sec->length |= (secbuf[2] & 0xFF); |
| 1448 |
} |
| 1449 |
|
| 1450 |
while ( c < count && sec->found < sec->length+3){ |
| 1451 |
secbuf[sec->found] = buf[c]; |
| 1452 |
c++; |
| 1453 |
sec->found++; |
| 1454 |
} |
| 1455 |
|
| 1456 |
if ( sec->length && sec->found == sec->length+3 ){ |
| 1457 |
error=0;
|
| 1458 |
for ( i = 0; i < MASKL; i++){ |
| 1459 |
if (i > 0 ) j=2+i; |
| 1460 |
else j = 0; |
| 1461 |
error += (sec->payload[j]&p->mask[MASKL*filtn+i])^ |
| 1462 |
(p->filt[MASKL*filtn+i]& |
| 1463 |
p->mask[MASKL*filtn+i]); |
| 1464 |
} |
| 1465 |
if (!error){
|
| 1466 |
p->is_full |= (tflags) (1 << filtn);
|
| 1467 |
} |
| 1468 |
if (buf[0]+1 < c ) c=count; |
| 1469 |
} |
| 1470 |
|
| 1471 |
if ( c < count ) sec_filter(p, filtn, off);
|
| 1472 |
|
| 1473 |
} |
| 1474 |
|
| 1475 |
#define MULT 1024 |
| 1476 |
|
| 1477 |
|
| 1478 |
void write_ps_headr( ps_packet *p, u8 *pts,int fd) |
| 1479 |
{
|
| 1480 |
long muxr = 37500; |
| 1481 |
u8 audio_bound = 1;
|
| 1482 |
u8 fixed = 0;
|
| 1483 |
u8 CSPS = 0;
|
| 1484 |
u8 audio_lock = 1;
|
| 1485 |
u8 video_lock = 1;
|
| 1486 |
u8 video_bound = 1;
|
| 1487 |
u8 stream1 = 0XC0;
|
| 1488 |
u8 buffer1_scale = 1;
|
| 1489 |
u32 buffer1_size = 32;
|
| 1490 |
u8 stream2 = 0xE0;
|
| 1491 |
u8 buffer2_scale = 1;
|
| 1492 |
u32 buffer2_size = 230;
|
| 1493 |
|
| 1494 |
init_ps(p); |
| 1495 |
|
| 1496 |
p->mpeg = 2;
|
| 1497 |
// SCR = 0
|
| 1498 |
p->scr[0] = 0x44; |
| 1499 |
p->scr[1] = 0x00; |
| 1500 |
p->scr[2] = 0x04; |
| 1501 |
p->scr[3] = 0x00; |
| 1502 |
p->scr[4] = 0x04; |
| 1503 |
p->scr[5] = 0x01; |
| 1504 |
|
| 1505 |
// SCR = PTS
|
| 1506 |
p->scr[0] = 0x44 | ((pts[0] >> 3)&0x18) | ((pts[0] >> 4)&0x03); |
| 1507 |
p->scr[1] = 0x00 | ((pts[0] << 4)&0xF0) | ((pts[1] >> 4)&0x0F); |
| 1508 |
p->scr[2] = 0x04 | ((pts[1] << 4)&0xF0) | ((pts[2] >> 4)&0x08) |
| 1509 |
| ((pts[2] >> 5)&0x03); |
| 1510 |
p->scr[3] = 0x00 | ((pts[2] << 3)&0xF8) | ((pts[3] >> 5)&0x07); |
| 1511 |
p->scr[4] = 0x04 | ((pts[3] << 3)&0xF8); |
| 1512 |
p->scr[5] = 0x01; |
| 1513 |
|
| 1514 |
p->mux_rate[0] = (u8)(muxr >> 14); |
| 1515 |
p->mux_rate[1] = (u8)(0xff & (muxr >> 6)); |
| 1516 |
p->mux_rate[2] = (u8)(0x03 | ((muxr & 0x3f) << 2)); |
| 1517 |
|
| 1518 |
p->stuff_length = 0xF8;
|
| 1519 |
|
| 1520 |
p->sheader_llength[0] = 0x00; |
| 1521 |
p->sheader_llength[1] = 0x0c; |
| 1522 |
|
| 1523 |
setl_ps(p); |
| 1524 |
|
| 1525 |
p->rate_bound[0] = (u8)(0x80 | (muxr >>15)); |
| 1526 |
p->rate_bound[1] = (u8)(0xff & (muxr >> 7)); |
| 1527 |
p->rate_bound[2] = (u8)(0x01 | ((muxr & 0x7f)<<1)); |
| 1528 |
|
| 1529 |
|
| 1530 |
p->audio_bound = (u8)((audio_bound << 2)|(fixed << 1)|CSPS); |
| 1531 |
p->video_bound = (u8)((audio_lock << 7)|
|
| 1532 |
(video_lock << 6)|0x20|video_bound); |
| 1533 |
p->reserved = (u8)(0xFF);
|
| 1534 |
|
| 1535 |
p->data[0] = stream2;
|
| 1536 |
p->data[1] = (u8) (0xc0 | (buffer2_scale << 5) | |
| 1537 |
(buffer2_size >> 8));
|
| 1538 |
p->data[2] = (u8) (buffer2_size & 0xff); |
| 1539 |
p->data[3] = stream1;
|
| 1540 |
p->data[4] = (u8) (0xc0 | (buffer1_scale << 5) | |
| 1541 |
(buffer1_size >> 8));
|
| 1542 |
p->data[5] = (u8) (buffer1_size & 0xff); |
| 1543 |
|
| 1544 |
write_ps(fd, p); |
| 1545 |
kill_ps(p); |
| 1546 |
} |
| 1547 |
|
| 1548 |
|
| 1549 |
|
| 1550 |
void twrite(u8 const *buf) |
| 1551 |
{
|
| 1552 |
int l = TS_SIZE;
|
| 1553 |
int c = 0; |
| 1554 |
int w;
|
| 1555 |
|
| 1556 |
|
| 1557 |
while (l){
|
| 1558 |
w = write(STDOUT_FILENO,buf+c,l); |
| 1559 |
if (w>=0){ |
| 1560 |
l-=w; |
| 1561 |
c+=w; |
| 1562 |
} |
| 1563 |
} |
| 1564 |
} |
| 1565 |
|
| 1566 |
void init_p2t(p2t_t *p, void (*fkt)(u8 const *buf)) |
| 1567 |
{
|
| 1568 |
memset(p->pes,0,TS_SIZE);
|
| 1569 |
p->counter = 0;
|
| 1570 |
p->pos = 0;
|
| 1571 |
p->frags = 0;
|
| 1572 |
if (fkt) p->t_out = fkt;
|
| 1573 |
else p->t_out = twrite;
|
| 1574 |
} |
| 1575 |
|
| 1576 |
void clear_p2t(p2t_t *p)
|
| 1577 |
{
|
| 1578 |
memset(p->pes,0,TS_SIZE);
|
| 1579 |
p->counter = 0;
|
| 1580 |
p->pos = 0;
|
| 1581 |
p->frags = 0;
|
| 1582 |
} |
| 1583 |
|
| 1584 |
|
| 1585 |
long int find_pes_header(u8 const *buf, long int length, int *frags) |
| 1586 |
{
|
| 1587 |
int c = 0; |
| 1588 |
int found = 0; |
| 1589 |
|
| 1590 |
*frags = 0;
|
| 1591 |
|
| 1592 |
while (c < length-3 && !found) { |
| 1593 |
if (buf[c] == 0x00 && buf[c+1] == 0x00 && |
| 1594 |
buf[c+2] == 0x01) { |
| 1595 |
switch ( buf[c+3] ) { |
| 1596 |
case 0xBA: |
| 1597 |
case PROG_STREAM_MAP:
|
| 1598 |
case PRIVATE_STREAM2:
|
| 1599 |
case PROG_STREAM_DIR:
|
| 1600 |
case ECM_STREAM :
|
| 1601 |
case EMM_STREAM :
|
| 1602 |
case PADDING_STREAM :
|
| 1603 |
case DSM_CC_STREAM :
|
| 1604 |
case ISO13522_STREAM:
|
| 1605 |
case PRIVATE_STREAM1:
|
| 1606 |
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
|
| 1607 |
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
|
| 1608 |
found = 1;
|
| 1609 |
break;
|
| 1610 |
|
| 1611 |
default:
|
| 1612 |
c++; |
| 1613 |
break;
|
| 1614 |
} |
| 1615 |
} else c++;
|
| 1616 |
} |
| 1617 |
if (c == length-3 && !found){ |
| 1618 |
if (buf[length-1] == 0x00) *frags = 1; |
| 1619 |
if (buf[length-2] == 0x00 && |
| 1620 |
buf[length-1] == 0x00) *frags = 2; |
| 1621 |
if (buf[length-3] == 0x00 && |
| 1622 |
buf[length-2] == 0x00 && |
| 1623 |
buf[length-1] == 0x01) *frags = 3; |
| 1624 |
return -1; |
| 1625 |
} |
| 1626 |
|
| 1627 |
return c;
|
| 1628 |
} |
| 1629 |
|
| 1630 |
void pes_to_ts( u8 const *buf, long int length, u16 pid, p2t_t *p) |
| 1631 |
{
|
| 1632 |
int c,c2,l,add;
|
| 1633 |
int check,rest;
|
| 1634 |
|
| 1635 |
c = 0;
|
| 1636 |
c2 = 0;
|
| 1637 |
if (p->frags){
|
| 1638 |
check = 0;
|
| 1639 |
switch(p->frags){
|
| 1640 |
case 1: |
| 1641 |
if ( buf[c] == 0x00 && buf[c+1] == 0x01 ){ |
| 1642 |
check = 1;
|
| 1643 |
c += 2;
|
| 1644 |
} |
| 1645 |
break;
|
| 1646 |
case 2: |
| 1647 |
if ( buf[c] == 0x01 ){ |
| 1648 |
check = 1;
|
| 1649 |
c++; |
| 1650 |
} |
| 1651 |
break;
|
| 1652 |
case 3: |
| 1653 |
check = 1;
|
| 1654 |
} |
| 1655 |
if(check){
|
| 1656 |
switch ( buf[c] ) {
|
| 1657 |
|
| 1658 |
case PROG_STREAM_MAP:
|
| 1659 |
case PRIVATE_STREAM2:
|
| 1660 |
case PROG_STREAM_DIR:
|
| 1661 |
case ECM_STREAM :
|
| 1662 |
case EMM_STREAM :
|
| 1663 |
case PADDING_STREAM :
|
| 1664 |
case DSM_CC_STREAM :
|
| 1665 |
case ISO13522_STREAM:
|
| 1666 |
case PRIVATE_STREAM1:
|
| 1667 |
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
|
| 1668 |
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
|
| 1669 |
p->pes[0] = 0x00; |
| 1670 |
p->pes[1] = 0x00; |
| 1671 |
p->pes[2] = 0x01; |
| 1672 |
p->pes[3] = buf[c];
|
| 1673 |
p->pos=4;
|
| 1674 |
memcpy(p->pes+p->pos,buf+c,TS_SIZE-4-p->pos);
|
| 1675 |
c += TS_SIZE-4-p->pos;
|
| 1676 |
p_to_t(p->pes,TS_SIZE-4,pid,&p->counter,
|
| 1677 |
p->t_out); |
| 1678 |
clear_p2t(p); |
| 1679 |
break;
|
| 1680 |
|
| 1681 |
default:
|
| 1682 |
c=0;
|
| 1683 |
break;
|
| 1684 |
} |
| 1685 |
} |
| 1686 |
p->frags = 0;
|
| 1687 |
} |
| 1688 |
|
| 1689 |
if (p->pos){
|
| 1690 |
c2 = find_pes_header(buf+c,length-c,&p->frags); |
| 1691 |
if (c2 >= 0 && c2 < TS_SIZE-4-p->pos){ |
| 1692 |
l = c2+c; |
| 1693 |
} else l = TS_SIZE-4-p->pos; |
| 1694 |
memcpy(p->pes+p->pos,buf,l); |
| 1695 |
c += l; |
| 1696 |
p->pos += l; |
| 1697 |
p_to_t(p->pes,p->pos,pid,&p->counter, |
| 1698 |
p->t_out); |
| 1699 |
clear_p2t(p); |
| 1700 |
} |
| 1701 |
|
| 1702 |
add = 0;
|
| 1703 |
while (c < length){
|
| 1704 |
c2 = find_pes_header(buf+c+add,length-c-add,&p->frags); |
| 1705 |
if (c2 >= 0) { |
| 1706 |
c2 += c+add; |
| 1707 |
if (c2 > c){
|
| 1708 |
p_to_t(buf+c,c2-c,pid,&p->counter, |
| 1709 |
p->t_out); |
| 1710 |
c = c2; |
| 1711 |
clear_p2t(p); |
| 1712 |
add = 0;
|
| 1713 |
} else add = 1; |
| 1714 |
} else {
|
| 1715 |
l = length-c; |
| 1716 |
rest = l % (TS_SIZE-4);
|
| 1717 |
l -= rest; |
| 1718 |
p_to_t(buf+c,l,pid,&p->counter, |
| 1719 |
p->t_out); |
| 1720 |
memcpy(p->pes,buf+c+l,rest); |
| 1721 |
p->pos = rest; |
| 1722 |
c = length; |
| 1723 |
} |
| 1724 |
} |
| 1725 |
} |
| 1726 |
|
| 1727 |
|
| 1728 |
|
| 1729 |
void p_to_t( u8 const *buf, long int length, u16 pid, u8 *counter, |
| 1730 |
void (*ts_write)(u8 const *)) |
| 1731 |
{
|
| 1732 |
|
| 1733 |
int l, pes_start;
|
| 1734 |
u8 obuf[TS_SIZE]; |
| 1735 |
long int c = 0; |
| 1736 |
pes_start = 0;
|
| 1737 |
if ( length > 3 && |
| 1738 |
buf[0] == 0x00 && buf[1] == 0x00 && buf[2] == 0x01 ) |
| 1739 |
switch (buf[3]){ |
| 1740 |
case PROG_STREAM_MAP:
|
| 1741 |
case PRIVATE_STREAM2:
|
| 1742 |
case PROG_STREAM_DIR:
|
| 1743 |
case ECM_STREAM :
|
| 1744 |
case EMM_STREAM :
|
| 1745 |
case PADDING_STREAM :
|
| 1746 |
case DSM_CC_STREAM :
|
| 1747 |
case ISO13522_STREAM:
|
| 1748 |
case PRIVATE_STREAM1:
|
| 1749 |
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
|
| 1750 |
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
|
| 1751 |
pes_start = 1;
|
| 1752 |
break;
|
| 1753 |
|
| 1754 |
default:
|
| 1755 |
break;
|
| 1756 |
} |
| 1757 |
|
| 1758 |
while ( c < length ){
|
| 1759 |
memset(obuf,0,TS_SIZE);
|
| 1760 |
if (length - c >= TS_SIZE-4){ |
| 1761 |
l = write_ts_header(pid, counter, pes_start |
| 1762 |
, obuf, TS_SIZE-4);
|
| 1763 |
memcpy(obuf+l, buf+c, TS_SIZE-l); |
| 1764 |
c += TS_SIZE-l; |
| 1765 |
} else {
|
| 1766 |
l = write_ts_header(pid, counter, pes_start |
| 1767 |
, obuf, length-c); |
| 1768 |
memcpy(obuf+l, buf+c, TS_SIZE-l); |
| 1769 |
c = length; |
| 1770 |
} |
| 1771 |
ts_write(obuf); |
| 1772 |
pes_start = 0;
|
| 1773 |
} |
| 1774 |
} |
| 1775 |
|
| 1776 |
|
| 1777 |
int write_ps_header(uint8_t *buf,
|
| 1778 |
uint32_t SCR, |
| 1779 |
long muxr,
|
| 1780 |
uint8_t audio_bound, |
| 1781 |
uint8_t fixed, |
| 1782 |
uint8_t CSPS, |
| 1783 |
uint8_t audio_lock, |
| 1784 |
uint8_t video_lock, |
| 1785 |
uint8_t video_bound, |
| 1786 |
uint8_t stream1, |
| 1787 |
uint8_t buffer1_scale, |
| 1788 |
uint32_t buffer1_size, |
| 1789 |
uint8_t stream2, |
| 1790 |
uint8_t buffer2_scale, |
| 1791 |
uint32_t buffer2_size) |
| 1792 |
{
|
| 1793 |
ps_packet p; |
| 1794 |
uint8_t *pts; |
| 1795 |
long lpts;
|
| 1796 |
init_ps(&p); |
| 1797 |
|
| 1798 |
lpts = htonl(SCR); |
| 1799 |
pts = (uint8_t *) &lpts; |
| 1800 |
|
| 1801 |
|
| 1802 |
p.mpeg = 2;
|
| 1803 |
// SCR = 0
|
| 1804 |
p.scr[0] = 0x44; |
| 1805 |
p.scr[1] = 0x00; |
| 1806 |
p.scr[2] = 0x04; |
| 1807 |
p.scr[3] = 0x00; |
| 1808 |
p.scr[4] = 0x04; |
| 1809 |
p.scr[5] = 0x01; |
| 1810 |
|
| 1811 |
// SCR = PTS
|
| 1812 |
p.scr[0] = 0x44 | ((pts[0] >> 3)&0x18) | ((pts[0] >> 4)&0x03); |
| 1813 |
p.scr[1] = 0x00 | ((pts[0] << 4)&0xF0) | ((pts[1] >> 4)&0x0F); |
| 1814 |
p.scr[2] = 0x04 | ((pts[1] << 4)&0xF0) | ((pts[2] >> 4)&0x08) |
| 1815 |
| ((pts[2] >> 5)&0x03); |
| 1816 |
p.scr[3] = 0x00 | ((pts[2] << 3)&0xF8) | ((pts[3] >> 5)&0x07); |
| 1817 |
p.scr[4] = 0x04 | ((pts[3] << 3)&0xF8); |
| 1818 |
p.scr[5] = 0x01; |
| 1819 |
|
| 1820 |
p.mux_rate[0] = (uint8_t)(muxr >> 14); |
| 1821 |
p.mux_rate[1] = (uint8_t)(0xff & (muxr >> 6)); |
| 1822 |
p.mux_rate[2] = (uint8_t)(0x03 | ((muxr & 0x3f) << 2)); |
| 1823 |
|
| 1824 |
p.stuff_length = 0xF8;
|
| 1825 |
|
| 1826 |
if (stream1 && stream2){
|
| 1827 |
p.sheader_llength[0] = 0x00; |
| 1828 |
p.sheader_llength[1] = 0x0c; |
| 1829 |
|
| 1830 |
setl_ps(&p); |
| 1831 |
|
| 1832 |
p.rate_bound[0] = (uint8_t)(0x80 | (muxr >>15)); |
| 1833 |
p.rate_bound[1] = (uint8_t)(0xff & (muxr >> 7)); |
| 1834 |
p.rate_bound[2] = (uint8_t)(0x01 | ((muxr & 0x7f)<<1)); |
| 1835 |
|
| 1836 |
|
| 1837 |
p.audio_bound = (uint8_t)((audio_bound << 2)|(fixed << 1)|CSPS); |
| 1838 |
p.video_bound = (uint8_t)((audio_lock << 7)|
|
| 1839 |
(video_lock << 6)|0x20|video_bound); |
| 1840 |
p.reserved = (uint8_t)(0xFF >> 1); |
| 1841 |
|
| 1842 |
p.data[0] = stream2;
|
| 1843 |
p.data[1] = (uint8_t) (0xc0 | (buffer2_scale << 5) | |
| 1844 |
(buffer2_size >> 8));
|
| 1845 |
p.data[2] = (uint8_t) (buffer2_size & 0xff); |
| 1846 |
p.data[3] = stream1;
|
| 1847 |
p.data[4] = (uint8_t) (0xc0 | (buffer1_scale << 5) | |
| 1848 |
(buffer1_size >> 8));
|
| 1849 |
p.data[5] = (uint8_t) (buffer1_size & 0xff); |
| 1850 |
|
| 1851 |
cwrite_ps(buf, &p, PS_HEADER_L2); |
| 1852 |
kill_ps(&p); |
| 1853 |
return PS_HEADER_L2;
|
| 1854 |
} else {
|
| 1855 |
cwrite_ps(buf, &p, PS_HEADER_L1); |
| 1856 |
kill_ps(&p); |
| 1857 |
return PS_HEADER_L1;
|
| 1858 |
} |
| 1859 |
} |
| 1860 |
|
| 1861 |
|
| 1862 |
|
| 1863 |
#define MAX_BASE 80 |
| 1864 |
#define MAX_PATH 256 |
| 1865 |
#define MAX_EXT 10 |
| 1866 |
|
| 1867 |
int break_up_filename(char *name, char *base_name, char *path, char *ext) |
| 1868 |
{
|
| 1869 |
int l,i,sstop,sstart;
|
| 1870 |
|
| 1871 |
l = strlen(name); |
| 1872 |
sstop = l; |
| 1873 |
sstart = -1;
|
| 1874 |
for( i= l-1; i >= 0; i--){ |
| 1875 |
if (sstop == l && name[i] == '.') sstop = i; |
| 1876 |
if (sstart<0 && name[i] == '/') sstart = i+1; |
| 1877 |
} |
| 1878 |
if (sstart < 0) sstart = 0; |
| 1879 |
if (sstop-sstart < MAX_BASE){
|
| 1880 |
strncpy(base_name, name+sstart, sstop-sstart); |
| 1881 |
base_name[sstop-sstart]=0;
|
| 1882 |
if(sstart > 0){ |
| 1883 |
if( l - sstop + sstart < MAX_PATH){
|
| 1884 |
strncpy(path, name, sstart); |
| 1885 |
path[sstart] = 0;
|
| 1886 |
} else {
|
| 1887 |
fprintf(stderr,"PATH too long\n");
|
| 1888 |
return -1; |
| 1889 |
} |
| 1890 |
|
| 1891 |
} else {
|
| 1892 |
strcpy(path, "./");
|
| 1893 |
} |
| 1894 |
|
| 1895 |
if(sstop < l){
|
| 1896 |
if( l - sstop -1 < MAX_EXT){ |
| 1897 |
strncpy(ext, name+sstop+1, l-sstop-1); |
| 1898 |
ext[l-sstop-1]=0; |
| 1899 |
} else {
|
| 1900 |
fprintf(stderr,"Extension too long\n");
|
| 1901 |
return -1; |
| 1902 |
} |
| 1903 |
|
| 1904 |
} else {
|
| 1905 |
strcpy(ext, "");
|
| 1906 |
} |
| 1907 |
|
| 1908 |
} else {
|
| 1909 |
fprintf(stderr,"Name too long\n");
|
| 1910 |
return -1; |
| 1911 |
} |
| 1912 |
/*
|
| 1913 |
printf("%d %d\n",sstart, sstop);
|
| 1914 |
printf("%s %d\n",name, strlen(name));
|
| 1915 |
printf("%s %d\n",base_name, strlen(base_name));
|
| 1916 |
printf("%s %d\n",path,strlen(path));
|
| 1917 |
printf("%s %d\n",ext,strlen(ext));
|
| 1918 |
*/
|
| 1919 |
return 0; |
| 1920 |
} |
| 1921 |
|
| 1922 |
|
| 1923 |
int seek_mpg_start(uint8_t *buf, int size) |
| 1924 |
{
|
| 1925 |
int found = 0; |
| 1926 |
int c=0; |
| 1927 |
int seq = 0; |
| 1928 |
int mpeg = 0; |
| 1929 |
int mark = 0; |
| 1930 |
|
| 1931 |
while ( !seq ){
|
| 1932 |
while (found != 4){ |
| 1933 |
switch (found) {
|
| 1934 |
case 0: |
| 1935 |
if ( buf[c] == 0x00 ) found++; |
| 1936 |
c++; |
| 1937 |
break;
|
| 1938 |
case 1: |
| 1939 |
if ( buf[c] == 0x00 ) found++; |
| 1940 |
else found = 0; |
| 1941 |
c++; |
| 1942 |
break;
|
| 1943 |
case 2: |
| 1944 |
if ( buf[c] == 0x01 ) found++; |
| 1945 |
else found = 0; |
| 1946 |
if ( buf[c] == 0x00 ) found = 2; |
| 1947 |
c++; |
| 1948 |
break;
|
| 1949 |
|
| 1950 |
case 3: |
| 1951 |
if ( (buf[c] & 0xe0) == 0xe0 ) found++; |
| 1952 |
else found = 0; |
| 1953 |
c++; |
| 1954 |
break;
|
| 1955 |
} |
| 1956 |
if (c >= size) return -1; |
| 1957 |
} |
| 1958 |
|
| 1959 |
if (found == 4){ |
| 1960 |
mark = c-4;
|
| 1961 |
c+=2;
|
| 1962 |
if (c >= size) return -1; |
| 1963 |
|
| 1964 |
if ( (buf[c] & 0xC0) == 0x80 ){ |
| 1965 |
mpeg = 2;
|
| 1966 |
c += 2;
|
| 1967 |
if (c >= size) return -1; |
| 1968 |
c += buf[c]+1;
|
| 1969 |
if (c >= size) return -1; |
| 1970 |
} else {
|
| 1971 |
mpeg = 1;
|
| 1972 |
while( buf[c] == 0xFF ) { |
| 1973 |
c++; |
| 1974 |
if (c >= size) return -1; |
| 1975 |
} |
| 1976 |
if ( (buf[c] & 0xC0) == 0x40) c+=2; |
| 1977 |
if (c >= size) return -1; |
| 1978 |
if ( (buf[c] & 0x30) ){ |
| 1979 |
if ( (buf[c] & 0x30) == 0x20) c+=5; |
| 1980 |
else c+=10; |
| 1981 |
} else c++;
|
| 1982 |
if (c >= size) return -1; |
| 1983 |
} |
| 1984 |
|
| 1985 |
if ( buf[c] == 0x00 && |
| 1986 |
buf[c+1] == 0x00 && |
| 1987 |
buf[c+2] == 0x01 && |
| 1988 |
buf[c+3] == 0xB3 ) |
| 1989 |
seq = 1;
|
| 1990 |
} |
| 1991 |
found = 0;
|
| 1992 |
} |
| 1993 |
|
| 1994 |
return size-mark;
|
| 1995 |
} |
| 1996 |
|
| 1997 |
|
| 1998 |
void write_mpg(int fstart, uint64_t length, int fdin, int fdout) |
| 1999 |
{
|
| 2000 |
// uint8_t mpeg_end[4] = { 0x00, 0x00, 0x01, 0xB9 };
|
| 2001 |
uint8_t *buf; |
| 2002 |
uint64_t l=0;
|
| 2003 |
uint64_t count = 0;
|
| 2004 |
struct stat sb;
|
| 2005 |
int buf_size;
|
| 2006 |
|
| 2007 |
fstat (fdout, &sb); |
| 2008 |
buf_size = sb.st_blksize; |
| 2009 |
|
| 2010 |
buf = (char *) alloca (buf_size + sizeof (int)); |
| 2011 |
|
| 2012 |
lseek(fdin, fstart, SEEK_SET); |
| 2013 |
|
| 2014 |
while ( count < length && (l = read(fdin,buf,buf_size)) >= 0){ |
| 2015 |
if (l > 0) count+=l; |
| 2016 |
write(fdout,buf,l); |
| 2017 |
printf("written %02.2f%%\r",(100.*count)/length); |
| 2018 |
} |
| 2019 |
printf("\n");
|
| 2020 |
|
| 2021 |
//write( fdout, mpeg_end, 4);
|
| 2022 |
} |
| 2023 |
|
| 2024 |
|
| 2025 |
#define CHECKBUF (1024*1024) |
| 2026 |
#define ONE_GIG (1024UL*1024UL*1024UL) |
| 2027 |
void split_mpg(char *name, uint64_t size) |
| 2028 |
{
|
| 2029 |
char base_name[MAX_BASE];
|
| 2030 |
char path[MAX_PATH];
|
| 2031 |
char ext[MAX_EXT];
|
| 2032 |
char new_name[256]; |
| 2033 |
uint8_t buf[CHECKBUF]; |
| 2034 |
int fdin;
|
| 2035 |
int fdout;
|
| 2036 |
uint64_t length = 0;
|
| 2037 |
uint64_t last; |
| 2038 |
int i;
|
| 2039 |
int mark, csize;
|
| 2040 |
struct stat sb;
|
| 2041 |
|
| 2042 |
if (break_up_filename(name,base_name,path,ext) < 0) exit(1); |
| 2043 |
|
| 2044 |
if ( (fdin = open(name, O_RDONLY|O_LARGEFILE)) < 0){ |
| 2045 |
fprintf(stderr,"Can't open %s\n",name);
|
| 2046 |
exit(1);
|
| 2047 |
} |
| 2048 |
|
| 2049 |
fstat (fdin, &sb); |
| 2050 |
|
| 2051 |
length = sb.st_size; |
| 2052 |
if ( length < ONE_GIG )
|
| 2053 |
printf("Filelength = %2.2f MB\n", length/1024./1024.); |
| 2054 |
else
|
| 2055 |
printf("Filelength = %2.2f GB\n", length/1024./1024./1024.); |
| 2056 |
|
| 2057 |
if ( length < size ) length = size;
|
| 2058 |
|
| 2059 |
printf("Splitting %s into Files with size <= %2.2f MB\n",name,
|
| 2060 |
size/1024./1024.); |
| 2061 |
|
| 2062 |
csize = CHECKBUF; |
| 2063 |
read(fdin, buf, csize); |
| 2064 |
if ( (mark = seek_mpg_start(buf,csize)) < 0){ |
| 2065 |
fprintf(stderr,"Couldn't find sequence header\n");
|
| 2066 |
exit(1);
|
| 2067 |
} |
| 2068 |
|
| 2069 |
last = csize-mark; |
| 2070 |
|
| 2071 |
for ( i = 0 ; i < length/size; i++){ |
| 2072 |
csize = CHECKBUF; |
| 2073 |
|
| 2074 |
if (csize > length-last) csize = length-last;
|
| 2075 |
lseek(fdin, last+size-csize, SEEK_SET); |
| 2076 |
read(fdin, buf, csize); |
| 2077 |
if ( (mark = seek_mpg_start(buf,csize)) < 0){ |
| 2078 |
fprintf(stderr,"Couldn't find sequence header\n");
|
| 2079 |
exit(1);
|
| 2080 |
} |
| 2081 |
|
| 2082 |
sprintf(new_name,"%s-%03d.%s",base_name,i,ext);
|
| 2083 |
printf("writing %s\n",new_name);
|
| 2084 |
|
| 2085 |
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC
|
| 2086 |
|O_LARGEFILE, |
| 2087 |
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP| |
| 2088 |
S_IROTH|S_IWOTH)) < 0){
|
| 2089 |
fprintf(stderr,"Can't open %s\n",new_name);
|
| 2090 |
exit(1);
|
| 2091 |
} |
| 2092 |
write_mpg(last, size-mark, fdin, fdout); |
| 2093 |
last = last + size - mark; |
| 2094 |
} |
| 2095 |
sprintf(new_name,"%s-%03d.%s",base_name,i,ext);
|
| 2096 |
printf("writing %s\n",new_name);
|
| 2097 |
|
| 2098 |
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC
|
| 2099 |
|O_LARGEFILE, |
| 2100 |
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP| |
| 2101 |
S_IROTH|S_IWOTH)) < 0){
|
| 2102 |
fprintf(stderr,"Can't open %s\n",new_name);
|
| 2103 |
exit(1);
|
| 2104 |
} |
| 2105 |
write_mpg(last, length-last, fdin, fdout); |
| 2106 |
} |
| 2107 |
|
| 2108 |
|
| 2109 |
|
| 2110 |
|
| 2111 |
void cut_mpg(char *name, uint64_t size) |
| 2112 |
{
|
| 2113 |
char base_name[MAX_BASE];
|
| 2114 |
char path[MAX_PATH];
|
| 2115 |
char ext[MAX_EXT];
|
| 2116 |
char new_name[256]; |
| 2117 |
uint8_t buf[CHECKBUF]; |
| 2118 |
int fdin;
|
| 2119 |
int fdout;
|
| 2120 |
uint64_t length = 0;
|
| 2121 |
uint64_t last; |
| 2122 |
int mark, csize;
|
| 2123 |
struct stat sb;
|
| 2124 |
|
| 2125 |
if (break_up_filename(name,base_name,path,ext) < 0) exit(1); |
| 2126 |
|
| 2127 |
|
| 2128 |
if ( (fdin = open(name, O_RDONLY|O_LARGEFILE)) < 0){ |
| 2129 |
fprintf(stderr,"Can't open %s\n",name);
|
| 2130 |
exit(1);
|
| 2131 |
} |
| 2132 |
|
| 2133 |
fstat (fdin, &sb); |
| 2134 |
|
| 2135 |
length = sb.st_size; |
| 2136 |
if ( length < ONE_GIG )
|
| 2137 |
printf("Filelength = %2.2f MB\n", length/1024./1024.); |
| 2138 |
else
|
| 2139 |
printf("Filelength = %2.2f GB\n", length/1024./1024./1024.); |
| 2140 |
|
| 2141 |
if ( length < size ) length = size;
|
| 2142 |
|
| 2143 |
printf("Splitting %s into 2 Files with length %.2f MB and %.2f MB\n",
|
| 2144 |
name, size/1024./1024., (length-size)/1024./1024.); |
| 2145 |
|
| 2146 |
csize = CHECKBUF; |
| 2147 |
read(fdin, buf, csize); |
| 2148 |
if ( (mark = seek_mpg_start(buf,csize)) < 0){ |
| 2149 |
fprintf(stderr,"Couldn't find sequence header\n");
|
| 2150 |
exit(1);
|
| 2151 |
} |
| 2152 |
|
| 2153 |
last = csize-mark; |
| 2154 |
|
| 2155 |
if (csize > length-last) csize = length-last;
|
| 2156 |
lseek(fdin, last+size-csize, SEEK_SET); |
| 2157 |
read(fdin, buf, csize); |
| 2158 |
if ( (mark = seek_mpg_start(buf,csize)) < 0){ |
| 2159 |
fprintf(stderr,"Couldn't find sequence header\n");
|
| 2160 |
exit(1);
|
| 2161 |
} |
| 2162 |
|
| 2163 |
sprintf(new_name,"%s-1.%s",base_name,ext);
|
| 2164 |
printf("writing %s\n",new_name);
|
| 2165 |
|
| 2166 |
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC
|
| 2167 |
|O_LARGEFILE, |
| 2168 |
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP| |
| 2169 |
S_IROTH|S_IWOTH)) < 0){
|
| 2170 |
fprintf(stderr,"Can't open %s\n",new_name);
|
| 2171 |
exit(1);
|
| 2172 |
} |
| 2173 |
write_mpg(last, size-mark, fdin, fdout); |
| 2174 |
last = last + size - mark; |
| 2175 |
|
| 2176 |
sprintf(new_name,"%s-2.%s",base_name,ext);
|
| 2177 |
printf("writing %s\n",new_name);
|
| 2178 |
|
| 2179 |
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC
|
| 2180 |
|O_LARGEFILE, |
| 2181 |
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP| |
| 2182 |
S_IROTH|S_IWOTH)) < 0){
|
| 2183 |
fprintf(stderr,"Can't open %s\n",new_name);
|
| 2184 |
exit(1);
|
| 2185 |
} |
| 2186 |
write_mpg(last, length-last, fdin, fdout); |
| 2187 |
} |
| 2188 |
|
| 2189 |
|
| 2190 |
|
| 2191 |
|
| 2192 |
void write_all (int fd, uint8_t *data, int length) |
| 2193 |
{
|
| 2194 |
int r;
|
| 2195 |
|
| 2196 |
while (length) {
|
| 2197 |
if ((r = write(fd, data, length)) > 0) { |
| 2198 |
data += r; |
| 2199 |
length -= r; |
| 2200 |
} |
| 2201 |
} |
| 2202 |
} |
| 2203 |
|
| 2204 |
|
| 2205 |
|
| 2206 |
void read_all (int fd, uint8_t *data, int length) |
| 2207 |
{
|
| 2208 |
int c = 0; |
| 2209 |
|
| 2210 |
while(1) { |
| 2211 |
if( read(fd, data+c, 1) == 1) { |
| 2212 |
c++; |
| 2213 |
if(data[c-1] == '\n') { |
| 2214 |
data[c] = 0;
|
| 2215 |
break;
|
| 2216 |
} |
| 2217 |
} |
| 2218 |
else {
|
| 2219 |
fprintf (stderr, "Error reading socket\n");
|
| 2220 |
exit(1);
|
| 2221 |
} |
| 2222 |
} |
| 2223 |
} |
| 2224 |
|
| 2225 |
|
| 2226 |
|
| 2227 |
char *url2host (uint8_t *url, char **name, uint32_t *ip, uint32_t *port) |
| 2228 |
{
|
| 2229 |
uint8_t *murl; |
| 2230 |
struct hostent *hoste;
|
| 2231 |
struct in_addr haddr;
|
| 2232 |
int found_ip = 1; |
| 2233 |
|
| 2234 |
if (!(strncmp(url, "http://", 7))) |
| 2235 |
url += 7;
|
| 2236 |
|
| 2237 |
*name = strdup(url); |
| 2238 |
if (!(*name)) {
|
| 2239 |
*name = NULL;
|
| 2240 |
return (NULL); |
| 2241 |
} |
| 2242 |
|
| 2243 |
murl = url; |
| 2244 |
while (*murl && *murl != ':' && *murl != '/') { |
| 2245 |
if ((*murl < '0' || *murl > '9') && *murl != '.') |
| 2246 |
found_ip = 0;
|
| 2247 |
murl++; |
| 2248 |
} |
| 2249 |
|
| 2250 |
(*name)[murl - url] = 0;
|
| 2251 |
if (found_ip) {
|
| 2252 |
if ((*ip = inet_addr(*name)) == INADDR_NONE)
|
| 2253 |
return (NULL); |
| 2254 |
} else {
|
| 2255 |
if (!(hoste = gethostbyname(*name)))
|
| 2256 |
return (NULL); |
| 2257 |
memcpy (&haddr, hoste->h_addr, sizeof(haddr));
|
| 2258 |
*ip = haddr.s_addr; |
| 2259 |
} |
| 2260 |
|
| 2261 |
if (!*murl || *murl == '/') { |
| 2262 |
*port = 80;
|
| 2263 |
return (murl);
|
| 2264 |
} |
| 2265 |
*port = atoi(++murl); |
| 2266 |
|
| 2267 |
while (*murl && *murl != '/') |
| 2268 |
murl++; |
| 2269 |
return (murl);
|
| 2270 |
} |
| 2271 |
|
| 2272 |
#define ACCEPT "Accept: video/mpeg, video/x-mpegurl, */*\r\n" |
| 2273 |
|
| 2274 |
int http_open (char *url) |
| 2275 |
{
|
| 2276 |
char purl[1024], *host, req[1024], *sptr; |
| 2277 |
uint32_t ip; |
| 2278 |
uint32_t port; |
| 2279 |
int sock;
|
| 2280 |
int reloc, relocnum = 0; |
| 2281 |
struct sockaddr_in server;
|
| 2282 |
int mfd;
|
| 2283 |
|
| 2284 |
strncpy (purl, url, 1023);
|
| 2285 |
purl[1023] = '\0'; |
| 2286 |
|
| 2287 |
do {
|
| 2288 |
host = NULL;
|
| 2289 |
strcpy (req, "GET ");
|
| 2290 |
if (!(sptr = url2host(purl, &host, &ip, &port))) {
|
| 2291 |
fprintf (stderr, "Unknown host\n");
|
| 2292 |
exit (1);
|
| 2293 |
} |
| 2294 |
strcat (req, sptr); |
| 2295 |
sprintf (req + strlen(req), |
| 2296 |
" HTTP/1.0\r\nUser-Agent: %s/%s\r\n",
|
| 2297 |
"whatever", "you want"); |
| 2298 |
if (host) {
|
| 2299 |
sprintf(req + strlen(req), |
| 2300 |
"Host: %s:%u\r\n", host, port);
|
| 2301 |
free (host); |
| 2302 |
} |
| 2303 |
|
| 2304 |
strcat (req, ACCEPT); |
| 2305 |
strcat (req, "\r\n");
|
| 2306 |
|
| 2307 |
server.sin_port = htons(port); |
| 2308 |
server.sin_family = AF_INET; |
| 2309 |
server.sin_addr.s_addr = ip; |
| 2310 |
|
| 2311 |
if ((sock = socket(PF_INET, SOCK_STREAM, 6)) < 0) { |
| 2312 |
perror ("socket");
|
| 2313 |
exit (1);
|
| 2314 |
} |
| 2315 |
|
| 2316 |
if (connect(sock, (struct sockaddr *)&server, |
| 2317 |
sizeof(server))) {
|
| 2318 |
perror ("connect");
|
| 2319 |
exit (1);
|
| 2320 |
} |
| 2321 |
|
| 2322 |
write_all (sock, req, strlen(req)); |
| 2323 |
if (!(mfd = fileno(fdopen(sock, "rb")))) { |
| 2324 |
perror ("open");
|
| 2325 |
exit (1);
|
| 2326 |
} |
| 2327 |
reloc = 0;
|
| 2328 |
purl[0] = '\0'; |
| 2329 |
read_all (mfd, req, 1023);
|
| 2330 |
if ((sptr = strchr(req, ' '))) { |
| 2331 |
switch (sptr[1]) { |
| 2332 |
case '2': |
| 2333 |
break;
|
| 2334 |
case '3': |
| 2335 |
reloc = 1;
|
| 2336 |
default:
|
| 2337 |
fprintf (stderr, "HTTP req failed:%s",
|
| 2338 |
sptr+1);
|
| 2339 |
exit (1);
|
| 2340 |
} |
| 2341 |
} |
| 2342 |
do {
|
| 2343 |
read_all (mfd,req, 1023);
|
| 2344 |
if (!strncmp(req, "Location:", 9)) |
| 2345 |
strncpy (purl, req+10, 1023); |
| 2346 |
} while (req[0] != '\r' && req[0] != '\n'); |
| 2347 |
} while (reloc && purl[0] && relocnum++ < 3); |
| 2348 |
if (reloc) {
|
| 2349 |
fprintf (stderr, "Too many HTTP relocations.\n");
|
| 2350 |
exit (1);
|
| 2351 |
} |
| 2352 |
|
| 2353 |
return sock;
|
| 2354 |
} |
| 2355 |
|