[mythtv] Thumbnail regeneration in WatchRecordings every viewing

[Kevin Kuphal]

Stutty wrote:

>Just upgraded to SVN[version 8480] after using 18.1 and some great
>improvements, but some really annoying bugs/features as well!
>
>One problem I'm seeing is that (nearly?) every time I view a
>recording, then exit - the frontend will ask the backend to regenerate
>[QUERY_GENPIXMAP] the preview thumbnail (my backend is a EPIA 8000, so
>it takes a good couple of seconds).
>
>I have not got the "generate thumbnails based on bookmarks" option
>set, and the thumbnail generated is always the same.
>
>First question is: Is it supposed to do this?
>
>As far as I can work out the ProgramInfo.lastmodified is always newer
>than the thumbnail when I exit from watching a recording... So this
>code in Playbackbox::getPixmap, always gets exercised:
>
>    if (previewLastModified <  pginfo->lastmodified &&
>        previewLastModified >= pginfo->recendts &&
>        !pginfo->IsEditing() &&
>        !JobQueue::IsJobRunning(JOB_COMMFLAG, pginfo))
>    {
>        RemoteGeneratePreviewPixmap(pginfo);
>        previewLastModified = getPreviewLastModified(pginfo);
>    }
>
>
>If this is a problem then I'll raise a ticket tomorrow, otherwise I'll
>just patch locally as it's a real PITA for me.
>  
>
Please do (with patch if possible) as this has been noted before on -dev 
and certain exists as an issue.

Kevin