supported both as input and as output, as the conversion performed is:
yuva420p -> src -> dst -> yuva420p.


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are supported, avoid pointless loops.


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Patch by Alexis Ballier gmailify($firstname, $familyname)


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Image buffers require 16-byte alignment, so av_malloc() should be used.
Fixes crash on PPC.

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set.


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only if the input format is paletted.

Fix potential crashes/weirdness if the input format is non-paletted.


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It makes no sense having that function inlined.

git-svn-id: file:///var/local/repositories/mplayer/trunk/libswscale@30349 b3059339-0415-0410-9bf9-f77b7e298cf2

swscale.c: In function ‘sws_scale’:
swscale.c:2968: warning: cast discards qualifiers from pointer target type


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swscale.c: In function ‘planarCopy’:
swscale.c:2256: warning: cast discards qualifiers from pointer target type


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swScale_C is not templated if any optimization is to be used and
!runtime_cpudetect.


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fmt_depth(fmt).


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swscale_template.c: In function ‘swScale_C’:
swscale_template.c:2580: warning: unused variable ‘alpMmxFilter’
swscale_template.c: In function ‘sws_init_swScale_C’:


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getSwsFunc().


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support dithering, remove the const char *dither variable and use a
literal string instead.


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sws_getContext().


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all the paletted formats.


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Based on patch by Reinhard Tartler <siretart tauware de>

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libswscale.


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