[Ffmpeg-devel] Patch for dynamic liba52.so loading

Rich Felker dalias
Sat Jun 11 04:17:29 CEST 2005

On Fri, Jun 10, 2005 at 06:44:47PM +0200, August Mayer wrote:
> Hello,
> It seems that the code for dynamically loading liba52.so (CONFIG_AC3 && 
> CONFIG_A52BIN) has been rotting for some time. There are two problems in 
> libavcodec/a52dec.c:
> 1. It uses fprintf instead of av_log, and
> 2. libavcodec/parser.c directly links to a52_syncinfo, which is not 
> available as a global symbol in this case.
> I've corrected these two problems; attached are the patches for it.
> Moreover, I have changed the code so that the references and function 
> pointers are stored in static variables instead of the AVCodecContext. 
> This looks more sensible to me, because liba52 only needs to be loaded 
> once during program lifetime. Is it possible that there are multiple 
> codec contexts? If so, then liba52.so would have been loaded multiple times.

Of course there are multiple codec contexts. Is there a good reason
for dynamic loading support? IMO it's unnecessary complexity that
should just be removed..


More information about the ffmpeg-devel mailing list