[vlc-devel] [PATCH] - issue with mouse-x/mouse-y on Linux

Rémi Denis-Courmont rem at videolan.org
Wed Feb 11 19:44:13 CET 2009

Le mercredi 11 février 2009 19:54:06 brezhoneg1, vous avez écrit :
> Now, do we need [   p_vout->fmt_in.i_x_offset,
> p_vout->fmt_in.i_visible_width + p_vout->fmt_in.i_x_offset  ] as the
> range of value is another question ? But, if this formula is used, this
> is the segment that results from it.

mouse-x and mouse-y are used by plugins to determine where (in the original 
format reference) the user clicks. DVD menus and puzzles are the two users 
that I know. IMHO, no matter how you look at it, there is no way to obtain a 
general correct formula with non zero offsets. As far as I understand, the 
video offsets is nothing but the amount of padding at the beginning of each 
scan line and the number of initial unused scan lines.

How that corelates to the original width should not be known. IMHO, this is 
just yet another bug in the video filter architecture. The mouse coordinates 
should be translated by filters as appropriate. Anyway, that exceeds my 
competences already.

Rémi Denis-Courmont

More information about the vlc-devel mailing list