[FFmpeg-cvslog] r12246 - in trunk: configure libavcodec/avcodec.h libavdevice/avdevice.h libavformat/avformat.h libavutil/avutil.h libpostproc/postprocess.h

[Måns Rullgård]

Diego Biurrun <diego at biurrun.de> writes:

> On Tue, Feb 26, 2008 at 09:37:59PM +0100, mru wrote:
>> 
>> Log:
>> less preprocessor magic in version number macros
>> 
>> --- trunk/libavutil/avutil.h	(original)
>> +++ trunk/libavutil/avutil.h	Tue Feb 26 21:37:59 2008
>> @@ -30,16 +30,20 @@
>>  
>> +#define AV_VERSION_INT(a, b, c) (a<<16 | b<<8 | c)
>> +#define AV_VERSION_DOT(a, b, c) a ##.## b ##.## c
>> +#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
>
> Why the indirection with AV_VERSION_DOT?

Otherwise you get LIBAVCODEC_VERSION defined as 51 . 50 . 1 (note the
spaces), which is not what we want.  It's our saving grace that a C
"preprocessor number" can contain any number of dots (but only one at
a time).

-- 
M?ns Rullg?rd
mans at mansr.com