FFmpeg is pure C and not all public headers have the declarations.

Originally committed as revision 23322 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

YUV2 -> RGB BGR for 565, 555 and 888 a.k.a. 24bit color.
Speed-up compared to C version compiled with -O3  187.28%
Patch by Marc Hoffman %mmh A pleasantst P com%
Original thread:
Date: May 9, 2007 2:46 AM
Subject: [FFmpeg-devel] PATCH BlackFin yuv2rgb color space conversion

Originally committed as revision 23307 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 23173 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 23147 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 21888 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

All the authours of such code agreed.

Originally committed as revision 21045 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 20100 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Patch by Victor Paesa <wzrlpy@arsystel.com>
Original thread:
Date: Aug 31, 2006 7:15 PM
Subject: [Ffmpeg-devel] [PATCH] Add sws_getCachedContext() to swscale library

Originally committed as revision 19667 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 19600 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

the +-1 issue is limited to >2tap vertical filters, so bilinear upscale was unaffected
the new code is sometime faster sometimes slower but the difference is significant (~20%) so its optional and enabled with arnd=1

Originally committed as revision 19177 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 19148 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 18866 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 17368 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

passing an array or double precission parameters for the scaling function, instead of missusing a few bits of the flags
fixing the naming of the scaling functions a little

Originally committed as revision 13374 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

AltiVec support in postproc/ + altivec optimizations for yuv2yuvX patch by (Romain Dolbeau <dolbeau at irisa dot fr>)

Originally committed as revision 12018 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 9986 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

removing sws - cpudetect dependancy (note rgb2rgb still needs it)
moving mplayer specific stuff from swscale.c -> vf_scale.c

Originally committed as revision 9976 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 9698 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

sws_scale() returns the number of outputed lines

Originally committed as revision 9495 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

yuv2rgb deglobalize
yuv2rgb optimizations / cleanup
bugs?

Originally committed as revision 9477 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

brightness / saturation / contrast / different yuv colorspace support for some yuv2rgb converters (many converters still ignore it)

Originally committed as revision 9417 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 9415 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 9414 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 6638 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 6581 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

{RGB,BGR}{1,4,8,15,16,24,32} output supported

Originally committed as revision 6579 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 6542 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

some cleanup

Originally committed as revision 6541 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

bugfixes

Originally committed as revision 6518 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

2% faster horizontal mmx2 scaler

Originally committed as revision 5453 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 4555 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 4468 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

bugfixes related to vo_x11 resizeing

Originally committed as revision 4420 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 4403 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 4402 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

x/yInc bugfix (bug was introduced during the global var removial)
more emms & no messing with ARCH_X86 (=workaround against not cleared mmx state somewhere)
sharpening filter (-ssf cs=<int> & -ssf ls=<int>)

Originally committed as revision 4298 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

Originally committed as revision 4296 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

-ssf cgb=<float> -> chrominance gaussian blur (nice to improve picture quality)
-ssf lgb=<float> -> luminance gaussian blur (dunno what its good for)
-ssf chs=<int> -> shift chrominance horizontally
-ssf cvs=<int> -> shift chrominance vertically
these will only work if the swscaler is used at all

Originally committed as revision 4295 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

dynamic memory allocation for the buffers (needed for the filter stuff)

Originally committed as revision 4291 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

experimental upscaling mode (-sws 3)
general convolution filters support (unfinished)
bugfix for bicubic upscaling
assertion checking if defined MP_DEBUG
checking of the input/output size instead of segfault if its very large

Originally committed as revision 4277 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc