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Date: Sun, 29 Feb 2004 15:14:22 +0200 From: Martin_Storsj Subject: Dynamic loading of ALSA I recently discovered that SDL can dynamically load ESD and aRts, and made a patch which adds this same functionality to ALSA. The update for configure.in isn't too good (it should e.g. look for libasound.so in other directories than /usr/lib), because I'm not too good at shellscripting and autoconf. The reason for using dlfcn.h and dlopen instead of SDL_LoadLibrary and SDL_LoadFunction is that libasound uses versioned symbols, and it is necessary to load the correct version using dlvsym. This isn't probably any real portability issue, because ALSA is linux-only.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 02 Mar 2004 12:49:16 +0000
parents 13ee9f4834ea
children 782fd950bd46 c121d94672cb
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/* win_ce_semaphore.h - header file to go with win_ce_semaphore.c */

typedef struct _SYNCH_HANDLE_STRUCTURE {
   HANDLE hEvent;
   HANDLE hMutex;
   HANDLE hSemph;
   LONG MaxCount;
   volatile LONG CurCount;
   LPCTSTR lpName;
} SYNCH_HANDLE_STRUCTURE, *SYNCHHANDLE;

#define SYNCH_HANDLE_SIZE sizeof (SYNCH_HANDLE_STRUCTURE)

        /* Error codes - all must have bit 29 set */
#define SYNCH_ERROR 0X20000000   /* EXERCISE - REFINE THE ERROR NUMBERS */

extern SYNCHHANDLE CreateSemaphoreCE (LPSECURITY_ATTRIBUTES, LONG, LONG, LPCTSTR);

extern BOOL ReleaseSemaphoreCE (SYNCHHANDLE, LONG, LPLONG);
extern DWORD WaitForSemaphoreCE (SYNCHHANDLE, DWORD);

extern BOOL CloseSynchHandle (SYNCHHANDLE);