[FFmpeg-devel] [PATCH] Mimic decoder

Mike Melanson mike
Sat Mar 22 01:53:24 CET 2008

Uoti Urpala wrote:
> On Fri, 2008-03-21 at 12:30 -0300, Ramiro Polla wrote:
>> The project I'm the most interested in for GSoC is one that might just 
>> start a flamewar: Port FFmpeg to Visual Studio.
>> I'm not sure it is even welcome by most devs, but if it is, I'll try my 
>> best to write a clean port. It would involve using the same build system 
>> we currently have, using wgcc as a cl.exe wrapper, importing some 
>> missing POSIX functionality from MinGW, and using MinGW to compile the 
>> extensive asm we have (except inline asm). It would actually be a hybrid 
>> build (MinGW+MSVC). Should I put more effort into this or is everyone 
>> against this just for the sake of bashing Windows?
> AFAIK the main thing causing problems when trying to compile the current
> version under MSVC is that MSVC fails to compile some standard C code.
> So suppose you manage to create a version of FFmpeg that compiles under
> MSVC. Then what? Would you expect your changes (which would worsen some
> code for the sake of MSVC support) to get merged and everyone developing
> FFmpeg to work under the restrictions of MSVC from then on? Or would you
> maintain it as a fork indefinitely? Or you would abandon it and let it
> rot after the summer project is over?

How about creating some script that, at built time, can convert C99
idioms to something that the non-C99 MSVC can handle? IOW, convert named
initializers to fully initialized structures. What other discrepancies
currently exist (not counting ASM, which will be effectively #ifdef'd away).

	-Mike Melanson

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