[MPlayer-dev-eng] Exporting functions and types

[Diego Biurrun]

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Diego

savignien hercule writes:
 > <STYLE>table.mail_content {DISPLAY: block}</STYLE><table width="100%" class="mail_content"><tr><td valign="top"><div><divRE>Well the problem appeared when I tried to compile the subrip tool of mplayer.
 > This tools needs an spudec_handle_t type to work. The original type is
 > defined in spudec.c file.If you #include the spudec.c file in subrip.c,
 > it doesn't compile because of others type. Even in moving the spudec_handle_t declaration
 > in the spudec.h file it didn't work. In fact, it's not very easy to reuse a function or
 > a type defined somewhere in the mplayer sources. So I suggest a way to export cleanly functions
 > and types :
 > In the file foo.c :
 > 
 > /* System includes */
 > #include &lt;stdio.h&gt;
 >  ..
 > /* foo.h include */
 > #define FOO_C
 > #include "foo.h"
 > #undef FOO_C
 > 
 > /* other includes */
 >  ..
 > /* static types and functions */
 >  ..
 > /* code */
 > 
 > In the file foo.h :
 > 
 > #ifndef FOO_H
 > #define FOO_H
 > 
 > #ifndef FOO_C
 > #define EXTERN_FOO extern
 > #else
 > #define EXTERN_FOO
 > #endif
 > 
 > /* exported types */
 > typedef t1 ...
 > 
 > /* exported functions */
 > EXTERN_FOO f1( ...);
 > EXTERN_FOO f2( ...);
 >  ..
 > #undef EXTERN_FOO
 > #endif /* FOO_H */
 > 
 > This way, whoever needs the f1 or f2 function or t1 type just has to include
 > foo.h et link with foo.o.
 > Well I realise what a work applying this to mplayer would be, but it can
 > be made each time a .c file is modified...
 > </PRE><divRE>Hope, this will help...</PRE><divRE>Savi.</PRE><divRE>PS: I succeded in compiling subrip. It works fine. I plan to submit the
 > modifications of this tool soon.
 > 
 > 
 > </PRE>
 > <div></div></td></tr></table><p style="margin-top:11px;padding-top:3px;background-image: url(http://mail.lycos.co.uk/Images/Mail/_content/dot.gif);background-repeat: repeat-x;background-position: 0px 0px;">Plus simple, plus fiable, plus rapide : découvrez <a href=http://www.caramail.lycos.fr>le nouveau Caramail</a>.
 > 
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