[FFmpeg-devel] [PATCH] swscale alpha channel support
Tue Mar 10 21:02:28 CET 2009
Michael Niedermayer wrote :
> On Tue, Mar 10, 2009 at 06:06:09PM +0000, M?ns Rullg?rd wrote:
>> Carl Eugen Hoyos <cehoyos at ag.or.at> writes:
>>> M?ns Rullg?rd <mans <at> mansr.com> writes:
>>>>> + echo " --enable-swscale-alpha enable alpha channel support in swscale"
>>> What is bad about alpha channel support in swscale?
>>> (Why would somebody want it disabled?)
>> Apparently it slows down the non-alpha paths ever so slightly.
> also it adds more code ...
> IMHO it would be best if all pixfmts could be disabled individually
how would you think it would be better to disable them ?
- disable a pixel format entirely ?
- disable a pixel format as source format ?
- disable a pixel format as a dest format ?
- the two latter above ?
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