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List:       xine-user
Subject:    [xine-user] expand post-plugin and OSD placement
From:       "Jussi Kukkonen" <jussi.kukkonen () gmail ! com>
Date:       2006-09-13 16:14:55
Message-ID: 5369e0930609130914p36427a04r42445149aff1c1f4 () mail ! gmail ! com
[Download RAW message or body]

Hi all,

I'm using xineliboutput (which uses xine-lib) as the output device of
VDR. The VDR on-screen-display is drawn "software blended" because I
use DirectFB. Now, if I watch 16:9 video (letterboxed) on my 4:3 TV,
the OSD gets scaled vertically --  only the video area is used for the
OSD.

I was told that the 'expand' post-plugin might help*. Well, after some
tweaking, it did. As far as I see the expand plugin makes the OSD
start not from the top of the screen, but from the beginning of the
(non-expanded) picture area. Is there a justification for this (or
have I misunderstood)?

Here's the culprit code in expand_overlay_add_event
(xine-lib/src/post/planar/expand.c):
---
    switch (event->object.object_type) {
    case 0:
      /* regular subtitle */
      if (this->enable_automatic_shift)
        event->object.overlay->y += 2 * this->top_bar_height;
      else
        event->object.overlay->y += this->overlay_y_offset;
      break;
    case 1:
      /* menu overlay */
      event->object.overlay->y += this->top_bar_height;
    }
---
I'm looking at xine-lib code for the first time, so I'm not claiming
to understand it. Still, removing "case 1" seems to work for me. Should I
file a bug or not?


*) http://sourceforge.net/tracker/index.php?func=detail&aid=1554070&group_id=160063&atid=814342

--
Jussi Kukkonen
jussi.kukkonen@gmail.com

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