include/SDL_loadso.h
author Ryan C. Gordon <icculus@icculus.org>
Tue, 27 Sep 2005 12:14:17 +0000
changeset 1147 b580f7201543
parent 769 b8d311d90021
child 1312 c9b51268668f
permissions -rw-r--r--
From: "Alex Volkov" <avcp-sdlmail@usa.net>
To: "'A list for developers using the SDL library. \(includesSDL-announce\)'" <sdl@libsdl.org>
Date: Mon, 19 Sep 2005 18:59:43 -0400
Subject: [SDL] [patch] Volume multiplier bug in

The volume multiplier in SDL_MixAudio_MMX_S8() is formed from the wrong
register.
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2004 Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Library General Public
     7     License as published by the Free Software Foundation; either
     8     version 2 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Library General Public License for more details.
    14 
    15     You should have received a copy of the GNU Library General Public
    16     License along with this library; if not, write to the Free
    17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 
    23 #ifdef SAVE_RCSID
    24 static char rcsid =
    25  "@(#) $Id$";
    26 #endif
    27 
    28 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
    29 /* System dependent library loading routines                           */
    30 
    31 /* Some things to keep in mind:                                        
    32    - These functions only work on C function names.  Other languages may
    33      have name mangling and intrinsic language support that varies from
    34      compiler to compiler.
    35    - Make sure you declare your function pointers with the same calling
    36      convention as the actual library function.  Your code will crash
    37      mysteriously if you do not do this.
    38    - Avoid namespace collisions.  If you load a symbol from the library,
    39      it is not defined whether or not it goes into the global symbol
    40      namespace for the application.  If it does and it conflicts with
    41      symbols in your code or other shared libraries, you will not get
    42      the results you expect. :)
    43 */
    44 
    45 
    46 #ifndef _SDL_loadso_h
    47 #define _SDL_loadso_h
    48 
    49 #include "begin_code.h"
    50 /* Set up for C function definitions, even when using C++ */
    51 #ifdef __cplusplus
    52 extern "C" {
    53 #endif
    54 
    55 /* This function dynamically loads a shared object and returns a pointer
    56  * to the object handle (or NULL if there was an error).
    57  * The 'sofile' parameter is a system dependent name of the object file.
    58  */
    59 extern DECLSPEC void * SDLCALL SDL_LoadObject(const char *sofile);
    60 
    61 /* Given an object handle, this function looks up the address of the
    62  * named function in the shared object and returns it.  This address
    63  * is no longer valid after calling SDL_UnloadObject().
    64  */
    65 extern DECLSPEC void * SDLCALL SDL_LoadFunction(void *handle, const char *name);
    66 
    67 /* Unload a shared object from memory */
    68 extern DECLSPEC void SDLCALL SDL_UnloadObject(void *handle);
    69 
    70 /* Ends C function definitions when using C++ */
    71 #ifdef __cplusplus
    72 }
    73 #endif
    74 #include "close_code.h"
    75 
    76 #endif /* _SDL_loadso_h */