Mercurial > sdl-ios-xcode
view src/video/Xext/Xv/Xvlibint.h @ 865:92615154bb68
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 | eadc0746dfaf |
children | 045f186426e1 |
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/*********************************************************** Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts, and the Massachusetts Institute of Technology, Cambridge, Massachusetts. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the names of Digital or MIT not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ******************************************************************/ /* $XFree86: xc/lib/Xv/Xvlibint.h,v 1.5 2001/07/25 15:04:53 dawes Exp $ */ #ifndef XVLIBINT_H #define XVLIBINT_H /* ** File: ** ** Xvlibint.h --- Xv library internal header file ** ** Author: ** ** David Carver (Digital Workstation Engineering/Project Athena) ** ** Revisions: ** ** 01.24.91 Carver ** - version 1.4 upgrade ** */ #define NEED_REPLIES #include <X11/Xlibint.h> #include "Xvproto.h" #include "Xvlib.h" #if !defined(UNIXCPP) #define XvGetReq(name, req) \ WORD64ALIGN\ if ((dpy->bufptr + SIZEOF(xv##name##Req)) > dpy->bufmax)\ _XFlush(dpy);\ req = (xv##name##Req *)(dpy->last_req = dpy->bufptr);\ req->reqType = info->codes->major_opcode;\ req->xvReqType = xv_##name; \ req->length = (SIZEOF(xv##name##Req))>>2;\ dpy->bufptr += SIZEOF(xv##name##Req);\ dpy->request++ #else /* non-ANSI C uses empty comment instead of "##" for token concatenation */ #define XvGetReq(name, req) \ WORD64ALIGN\ if ((dpy->bufptr + SIZEOF(xv/**/name/**/Req)) > dpy->bufmax)\ _XFlush(dpy);\ req = (xv/**/name/**/Req *)(dpy->last_req = dpy->bufptr);\ req->reqType = info->codes->major_opcode;\ req->xvReqType = xv_/**/name;\ req->length = (SIZEOF(xv/**/name/**/Req))>>2;\ dpy->bufptr += SIZEOF(xv/**/name/**/Req);\ dpy->request++ #endif #endif /* XVLIBINT_H */