Hi Thomas,
Thomas Rehaag wrote:
> I've tried to configure ffmpeg with:
> ./configure --enable-shared --disable-static --enable-memalign-hack
> --disable-gpl --enable-swscale
>
> But I was told:
> "The software scaler is under GPL and --enable-gpl is not specified."
>
> The first lines of swscale.h tell something different:
>
> * This file is part of FFmpeg.
> *
> * FFmpeg is free software; you can redistribute it and/or
> * modify it under the terms of the GNU Lesser General Public
> * License as published by the Free Software Foundation; either
>
> So can annybody please point me to the truth about the license of
> swscale?
If you look at all the files in the libswscale directory, you'll see
that some of them are released under GPL, some other are under LGPL.
As a result, the resulting library is released under GPL, because it
contains GPLed components.
So, both the configure output and the swscale.h header are correct.
> And if it's really GPL, is there any way to get back img_convert?
You don't need it.
Just configure ffmpeg without "--enable-swscale", and you will get
a library released under the LGPL license that implement the swscale
API by using the old image scaler contained in libavcodec.
Since swscale.h's license is LGPL, there is no problem.
If one day the license of swscale will change (I think there is a
gsoc project working on something similar), your program will be ready
to use libswscale without any change in the code.
Luca
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