[libdvbpsi-devel] Bug in EIT PSI section gathering

Sas(o Kiselkov skiselkov at gmail.com
Wed Jan 16 16:54:24 CET 2008


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An SVN snapshot from about a few months ago - as Johann Hanne already
pointed out, it was old. I've tried the latest version, and its already
fixed there.

Regards
- --
Saso

Christophe Massiot wrote:
> On Wed, Jan 16, 2008, Sas(o Kiselkov wrote:
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>> I've found a design bug in eit.c: when gathering PSI sections for EIT
>> decoding, the code assumes that the section numbers must be contiguous
>> from 0x00 up to i_last_section_number, which isn't the case: ETSI EN 300
>> 468 V1.5.1, p.23, "section_number":
>>
>> "Within each segment the section_number shall increment by 1 with each
>> additional section, but a gap in numbering is permitted between the last
>> section of a segment and the first section of the adjacent segment."
>>
>> I found that when trying to program an EPG application, the ARTE channel
>> multiplex on Astra 19.2E would only show me the current and following
>> events (in table_id 0x4e with just two sections), but none of the
>> scheduled events (table_id 0x50 - 0x5f, with lots more sections with
>> gaps between them). I reworked the code in eit.c to call
>> dvbpsi_DecodeEITSections for each new section received, which made
>> decode each section one by one, but my solution is a hack and clearly
>> suboptimal.
>>
>> Any suggestions on how to patch this behavior?
> 
> Which libdvbpsi version are you using ?
> 

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