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Re: [Linphone-developers] FFmpeg DLL's and Linphone-C

From: Simon Morlat
Subject: Re: [Linphone-developers] FFmpeg DLL's and Linphone-C
Date: Sat, 17 Feb 2007 11:21:58 +0100
User-agent: KMail/1.9.5

You can remove --enable-mp3lame. Linphone does not need this feature.
ffmpeg integrates various external codecs (for example x264, mp3lame) among 
with its built-in codecs (h263/mpeg4...).
You just need a ffmpeg with its built-in codecs.


Le mardi 13 février 2007 20:23, Adrian Kaehler a écrit :
>   Simon,
>  Thanks for the help.  This is probably what I need.  I am thinking that I
> do not understand the phrase "configured ffmpeg to have no dependency".  I
> looked at './configure --help' and did not find an option that seemed to be
> obviously the right thing.  Can you tell me what options you give
> configure?  At the moment, I am using the following options:
> ./configure --enable-memalign-hack --enable-mingw32 --enable-mp3lame
> --extra-cflags=-I/local/include --extra-ldflags=-L/local/lib
> Thank you again,
>   -Adrian
> -----Original Message-----
> From: Simon Morlat [mailto:address@hidden
> Sent: Tuesday, February 13, 2007 5:20 AM
> To: address@hidden
> Cc: Adrian Kaehler
> Subject: Re: [Linphone-developers] FFmpeg DLL's and Linphone-C
> Hi,
> Actually I build ffmpeg using mingw without any dependencies. This
> generates libavcodec.a, libavutil.a and libavformat.a. Only the first two
> are needed by linphone and those libraries don't require any other library
> if you configured ffmpeg  to have no dependency. (use the ./configure
> options)
> libogg is necessary to build libtheora, however libtheora is not a
> mandatory dependency of linphone. You just need to remove theora.c from the
> compilation in mediastreamer2 and remove ms_theora_enc_desc and
> ms_theora_dec_desc from alldescs.h.
> In any case libvorbis isn't necessary at all.
> Hope this helps !
> Simon
> Le vendredi 9 février 2007 19:09, Adrian Kaehler a écrit :
> >   Hi all,
> >
> >   So my quest to build Linphone on windows continues.  I am trying to
> > build Linphone-C, the console App, becuase I want to be able to build
> > everything in Visual Studio.  After a whole lot of tinkering around, I
> > am able to build all of the libraries, and build and link the code.
> > Readline caused some trouble, but that seems to be resolved as well.
> > I am compiling and linking all of the linphone libraries statically.
> >   But now when I try to actually _run_ the compiled application, I get
> > errors about missing DLL's, all of them from various parts of ffmpeg.
> > I can not tell you which all they are, because as you all probably
> > know, on windows you are only told about the first missing DLL, and
> > you have to find that one to know what the next one will be.
> > Generally, I need things like vorbis.dll, as well as things with names
> > like libvorbis-0.dll.  The ones of the former type I can find here or
> > there pretty easily, I have never seen the ones of the latter type.
> > Does anyone know what these are?
> >   I tried to build ffmpeg under MinGW, and though I could bulid ffmpeg
> > and ogg, I was not able to build vorbis (build crashes on a bunch of
> > linker errors).  Foraging around the net, I was able to find
> > libogg-0.dll, libvorbis-0.dll, and now I need libvorbisenc-2.dll.. who
> > knows what is next.  So, I have two questions:
> >
> > 1) Does anyone have these libraries or can point me to someplace on
> > the web where I can get them?
> >
> > 2) I have the windoes build of Linphone, why does it not need these
> > libraries?  It runs just fine without them.  Can anyone explain this?
> >
> >  Thanks in advance, I would so very much appreciate any help anyone
> > can give.
> >
> > -Adrian
> >
> >
> >
> > (ps, if anyone is curious, libvorbis build is crashing on a bunch of
> > undefined rederences to things with names like ogg_***_***.  I did run
> > configure with what I believe to be the "correct" options "./configure
> > --with-ogg=/usr/local --with-ogg-libraries=/usr/local/lib
> > --with-ogg-includes=/usr/local/include" to tell vorbis where to find
> > the ogg headers and libraries).
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