[FFmpeg-devel] ffmpeg.c/cmdutils.c compilation

Ivo ivop
Tue Jun 26 20:54:22 CEST 2007

On Tuesday 26 June 2007 18:00, Michael Niedermayer wrote:
> On Tue, Jun 26, 2007 at 04:36:26PM +0200, Ivo wrote:
> > On Tuesday 26 June 2007 15:19, Benoit Fouet wrote:
> > > Ronald S. Bultje wrote:
> > > > If you put a AVClass on top of SwsContext in
> > > > libavcodec/imgresample.c (an empty AVClass, i.e. no options, should
> > > > do the trick already - you could also make one that describes
> > > > ImgReSampleContext, but since that's deprecated I wouldn't waste my
> > > > time on it). I think that's the only reason it crashes...
> >
> > Yes, it is. When I originally checked the sws_opts code in, I put it
> > under ifdef's (which later became the if() constructs) because the
> > "emulated" SwsContext was not a proper AVClass so it would segfault if
> > ffmpeg was compiled without swscaler support.
> >
> > I think the best way to fix all this is to extract all the av_picture
> > stuff out of imgconvert and remove the already deprecated
> > imgconvert/resample for good :)
> you mean finally removing imgconvert/resample and making sws default?
> or just removing the old API?

I meant the former, but the latter could be a good start as it forces 
programs using lav* to use the sws api.

> iam fine with both but there are some who will not like the first as
> sws still contains some GPL code IIRC?

I thought only most of the SIMD code was GPL'd and the C framework/reference 
code was LGPL, but I could be wrong and overlooked pieces of code.

In any case, even if it stays like it is now, I think it's a good idea to 
move the av_picture and PixFmtInfo stuff into files of their own.


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