[FFmpeg-devel] [PATCH v4] lavc/rawdec: Remove monowhite switching code for 1 bpp AVI without a palette

[Mats Peterson]

Fixed the stride for odd widths. This patch should be applied after your 
recent PAL8 changes for nut, Michael. Description follows:

This patch removes the monowhite switching code for 1 bpp raw AVI 
without a palette. I don't see any reason to keep it, since it's 
semantically incorrect to use monowhite for palettized data in my book, 
it adds unnecessary noise to the code, and it's inconsistent with the 
rest of the code in FFmpeg.

For black & white AVI or QuickTime files, in order to produce a 
monochrome nut file, force the pixel format with "-pix_fmt monow" or 
"-pix_fmt monob".

Unfortunately, there seems to be some dithering going on when converting 
from pal8 to monow. A better way is to use "ffmpeg -i 1bpp.avi -vcodec 
copy -vtag B1W0 1bpp.nut". The "-vtag" option is currently needed, 
otherwise FFmpeg will use a RGB[15] codec tag for some reason.

I have also updated the 1 bpp FATE test files (once again).

Mats
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