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Re: [libredwg] CRC?
From: |
Till Heuschmann |
Subject: |
Re: [libredwg] CRC? |
Date: |
Thu, 16 Sep 2010 19:04:40 +0200 |
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.1.11) Gecko/20100711 Thunderbird/3.0.6 |
You can read the crc like this (classes section):
//ckr = bit_read_CRC(dat);
bit_check_CRC(dat, dwg->header.section[1].address + 16, 0xC0C1);
The function will read the crc but the comparison will fail due to an
error in the function:
Just flip the bytes of one crc and the two crc are the same!
The magic thing is the bit_check_CRC functions parameter "seed" which
must be in most sections 0xC0C1
but 0 in the SectionLocator!
Am 16.09.2010 00:34, schrieb Ivan:
2010/9/15 Till Heuschmann<address@hidden>:
What version are you talking of?
Sorry...
I tried dwg R13, R14 and R15
Bye
- [libredwg] CRC?, Ivan, 2010/09/15
- Re: [libredwg] CRC?, Till Heuschmann, 2010/09/15
- Re: [libredwg] CRC?, Ivan, 2010/09/15
- Re: [libredwg] CRC?,
Till Heuschmann <=
- Re: [libredwg] CRC?, Ivan, 2010/09/16
- Re: [libredwg] CRC?, Ivan, 2010/09/16
- Re: [libredwg] CRC?, Rodrigo Rodrigues da Silva, 2010/09/19
- Re: [libredwg] CRC?, Ivan, 2010/09/21
- Re: [libredwg] CRC?, Rodrigo Rodrigues da Silva, 2010/09/21
- Re: [libredwg] CRC?, Ivan, 2010/09/25