[PATCH] __draw_transparent_text__ (osd.py)

Hello,

Problem : The "dim text" feature slow the tv listening scroll

Why ? matrix calculation with two imbricate For loop in
__draw_transparent_text__ (osd.py)

Solution : use NumPy to acdelerate the matrix calculation

Proposed patch for osd.py :

43a44
> import numpy
1148,1149d1148
<             opaque_mod = float(1)
<             opaque_stp = opaque_mod/float(pixels)
1155,1159c1154,1158
<             for x in range(max(w-pixels, 0), w):
<                 for y in range(0, h):
<                     if alpha[x, y] != 0:
<                         alpha[x, y] = int(alpha[x, y] * opaque_mod)
<                 opaque_mod -= opaque_stp
---
>             alpha *= numpy.row_stack(
>                      [numpy.ones( (max(w-pixels, 0),h) )]
>                      + [numpy.linspace(mod,mod,num=h)
>                          for mod in numpy.linspace(1,0,num=pixels) ] )
> 

Best regards,

Florent Kaisser.


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