[FFmpeg-devel] [PATCH] H.264 predictive lossless: again

Jason Garrett-Glaser darkshikari
Sun Nov 30 00:50:29 CET 2008

OK, I'm getting into quite a mess writing things now because of the
following problem.  Predictive lossless only says that certain
directions (H/V) are predictive: other directions are not and can
still be used.  The result of this is that set_pixels can be used with
add_pixels mixed in the same MB, so you can't merely set idct_add to
set_pixels; that won't work at all, and still requires an extra branch
inside the iDCT loop to choose which one to use based on the current
prediction direction.

Current patch (does not actually work) attached.

Dark Shikari
-------------- next part --------------
A non-text attachment was scrubbed...
Name: predictive_lossless_broken.diff
Type: text/x-diff
Size: 11576 bytes
Desc: not available
URL: <http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/attachments/20081129/d9e5dee6/attachment.diff>

More information about the ffmpeg-devel mailing list