[libdvbpsi-devel] Bug in EIT PSI section gathering

Johann Hanne jhml at gmx.net
Wed Jan 16 10:58:32 CET 2008


Hi Saso,

this is fixed in 0.1.6.

Cheers, Johann

On Wednesday 16 January 2008 00:30:03  wrote:
> 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?
>
> Regards





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