| … | |
… | |
| 451 | && data[ 6] == 0x1a |
451 | && data[ 6] == 0x1a |
| 452 | && data[ 7] == 0x0a) |
452 | && data[ 7] == 0x0a) |
| 453 | RETVAL = "image/png"; |
453 | RETVAL = "image/png"; |
| 454 | else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0) |
454 | else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0) |
| 455 | RETVAL = "image/jxl"; |
455 | RETVAL = "image/jxl"; |
|
|
456 | else if (data_len >= 13 |
|
|
457 | && data[0] == 'G' |
|
|
458 | && data[1] == 'I' |
|
|
459 | && data[2] == 'F' |
|
|
460 | && data[3] == '8' |
|
|
461 | //&& (data[4] == '7' || data[4] == '9') |
|
|
462 | && data[5] == 'a') |
|
|
463 | { |
|
|
464 | RETVAL = "image/gif"; |
|
|
465 | |
|
|
466 | // now see if its animated - we require the netscape application header for this |
|
|
467 | int ofs = 13; |
|
|
468 | |
|
|
469 | if (data[10] & 0x80) |
|
|
470 | ofs += (1 << ((data[10] & 7) + 1)) * 3; |
|
|
471 | |
|
|
472 | if (data_len >= ofs + 2 + 1 + 11) |
|
|
473 | { |
|
|
474 | // skip a rare first graphic control extension block |
|
|
475 | // we assume there is exactly one block |
|
|
476 | if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9) |
|
|
477 | ofs += 3 + data[ofs + 2] + 1; |
|
|
478 | |
|
|
479 | if (data_len >= ofs + 2 + 1 + 11) |
|
|
480 | if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1)) |
|
|
481 | RETVAL = "video/gif"; |
|
|
482 | } |
|
|
483 | } |
|
|
484 | |
| 456 | else |
485 | else |
| 457 | XSRETURN_UNDEF; |
486 | XSRETURN_UNDEF; |
| 458 | } |
487 | } |
| 459 | OUTPUT: |
488 | OUTPUT: |
| 460 | RETVAL |
489 | RETVAL |
