| Summary: | EPG information does not display properly with high-definition channels on DVB-T2 | ||
|---|---|---|---|
| Product: | [Applications] kaffeine | Reporter: | jules |
| Component: | general | Assignee: | Mauro Carvalho Chehab <mchehab> |
| Status: | ASSIGNED --- | ||
| Severity: | normal | CC: | jules |
| Priority: | NOR | ||
| Version First Reported In: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | Other | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
I have a fix for this, using huffman decoder from tvheadend. (In reply to jules from comment #1) > I have a fix for this, using huffman decoder from tvheadend. Decoding UK tables it is not hard, but the question is whether this is legal or not. The better would be to have the huffmann decoding on a separate repository (either as a daemon or as a plugin), in order to avoid adding something on Kaffeine that could prevent it from being distributed. The tvheadend code is GPL, same as Kaffeine.
So there shouldn't be any problem with copying and modifying the code for use in Kaffeine?
Original code is here:
https://github.com/tvheadend/tvheadend/blob/master/src/epggrab/support/freesat_huffman.c
My patch is here (not necessarily permanently):
http://op59.net/kaffeine-epg-hd-patch.txt
I would be grateful if someone could respond to my previous message about the EPG patch being GPL. A possibly relevant merge request was started @ https://invent.kde.org/multimedia/kaffeine/-/merge_requests/3 |
SUMMARY When viewing UK high definition channels in Programme Guide, Kaffeine shows unreadbale characters for programme names and descriptions. Similarly for the On Screen Display of programme information. STEPS TO REPRODUCE 1. View a high definition channel, e.g. 'BBC ONE HD' 2. Open Programme Guide 3. or press 'O' to show On Screen Display. OBSERVED RESULT Unreadable characters. EXPECTED RESULT Readable text. SOFTWARE/OS VERSIONS Linux: Devuan GNU/Linux 3 KDE Plasma Version: KDE Frameworks Version: kde-runtime 4:17.08.3-2.1 Qt Version: libqt4-dev 4:4.8.7+dfsg-18 Kaffeine is built from latest source, sha=ea35f1eb49 'Fix minor EBN issues', Date: Wed Dec 11 20:57:46 2019 +0200. ADDITIONAL INFORMATION Problem happens for all high definition channels. On normal definition channels the problem does not occur - EPG information display fine. Hardware is Hauppauge WinTV-dual HD, identifying as si2168 Silicon Labs Si2168-B40. Examples of raw bytes passed to src/dvb/dvbsi.cpp:DvbSiText::convertText(): 1f 01 d9 af d8 ab eb 0f 1f 3b e4 cc 1f 02 57 3c 95 d3 5b f4 27 a1 7d 57 4d ec 78 ed fc 73 c9 6e ab 57 ad 78 ce f6 6d 66 9f 00 74 40 1f 02 e5 61 6d 94 b0 04 fe 6e 3b 3b 27 f6 6e d2 97 e8 60 1f 02 20 bc 35 e1 db 2e 7f 66 cb d2 f3 fc 74 de 53 dd bb 60 4a e7 e2 fa d3 26 f6 e7 bb 0c 23 65 19 d4 f4 4f 0f dd 0a bc ca 0d 5f 1f 89 4a 03 ed b2 96 00 9f 96 fc DvbSiText::convertText() doesn't seem to have a path to handle the two apparent prefixes '0x1f 0x01' and '0x1f 0x2'. I've tried modifying it to use each of the available decoders (DvbSiText::TextEncoding is 0..19), but none of them seems to give readable text.