The filter copied the chroma planes from every potentially changed row
of the original image to its non-subsampled work area. Change it to
calculate the minimum and maximum x coordinate for each chroma row and
only copy the part between those.
The performance increase is only minor (though observable), but I
think the resulting code is no more complex than the original.
The effect of alpha blending was calculated as
color = orig_color * alpha / 255
where alpha and color range from 0 to 255.
Change this to
color = (orig_color * alpha + 255) / 256
where the "/ 256" can be expressed as a shift whereas the compiler
would probably generate a multiply+shift for the original "/ 255".
This formula gives a result that is too high by 1 for some inputs.
However it gives the exact result if alpha is 0 or 255 which is
probably the case where small errors would matter most.
If it is set, renderer is reconfigured before the next frame.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@25841 b3059339-0415-0410-9bf9-f77b7e298cf2
The use of inttypes.h is more common throughout MPlayer and stdint.h
can create problems on obscure systems like HP-UX, see Bugzilla #831.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@24565 b3059339-0415-0410-9bf9-f77b7e298cf2
It is possible to separately configure hinting for scaled and unscaled osd.
The default is native hinter for unscaled osd (only vo_gl at this point),
no hinting for vf_ass.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@23152 b3059339-0415-0410-9bf9-f77b7e298cf2
Recent libass api changes moved fontconfig initialization to filter's
config() function. It is bad, because cache update can take a long time,
resulting in unpleasant sound effects. This change restores the original
behaviour.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@20722 b3059339-0415-0410-9bf9-f77b7e298cf2
- ass_instance_t renamed to ass_renderer_t
- ass_library_t introduced
- use of mplayer-specific global variables limited to ass_mp.c
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@20493 b3059339-0415-0410-9bf9-f77b7e298cf2
FontConfig initialization moved from ass_init() to ass_set_fonts().
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@20462 b3059339-0415-0410-9bf9-f77b7e298cf2
