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dynamic_mod.c
288 lines (273 loc) · 7.33 KB
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dynamic_mod.c
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/*
SDL_mixer: An audio mixer library based on the SDL library
Copyright (C) 1997-2009 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
slouken@libsdl.org
*/
#ifdef MOD_MUSIC
#include "SDL_loadso.h"
#include "dynamic_mod.h"
mikmod_loader mikmod = {
0, NULL
};
#ifdef MOD_DYNAMIC
int Mix_InitMOD()
{
if ( mikmod.loaded == 0 ) {
mikmod.handle = SDL_LoadObject(MOD_DYNAMIC);
if ( mikmod.handle == NULL ) {
return -1;
}
mikmod.MikMod_Exit =
(void (*)(void))
SDL_LoadFunction(mikmod.handle, "MikMod_Exit");
if ( mikmod.MikMod_Exit == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.MikMod_InfoDriver =
(CHAR* (*)(void))
SDL_LoadFunction(mikmod.handle, "MikMod_InfoDriver");
if ( mikmod.MikMod_InfoDriver == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.MikMod_InfoLoader =
(CHAR* (*)(void))
SDL_LoadFunction(mikmod.handle, "MikMod_InfoLoader");
if ( mikmod.MikMod_InfoLoader == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.MikMod_Init =
(BOOL (*)(CHAR*))
SDL_LoadFunction(mikmod.handle, "MikMod_Init");
if ( mikmod.MikMod_Init == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.MikMod_RegisterAllLoaders =
(void (*)(void))
SDL_LoadFunction(mikmod.handle, "MikMod_RegisterAllLoaders");
if ( mikmod.MikMod_RegisterAllLoaders == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.MikMod_RegisterDriver =
(void (*)(struct MDRIVER*))
SDL_LoadFunction(mikmod.handle, "MikMod_RegisterDriver");
if ( mikmod.MikMod_RegisterDriver == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.MikMod_errno =
(int*)
SDL_LoadFunction(mikmod.handle, "MikMod_errno");
if ( mikmod.MikMod_errno == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.MikMod_strerror =
(char* (*)(int))
SDL_LoadFunction(mikmod.handle, "MikMod_strerror");
if ( mikmod.MikMod_strerror == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.Player_Active =
(BOOL (*)(void))
SDL_LoadFunction(mikmod.handle, "Player_Active");
if ( mikmod.Player_Active == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.Player_Free =
(void (*)(MODULE*))
SDL_LoadFunction(mikmod.handle, "Player_Free");
if ( mikmod.Player_Free == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.Player_LoadGeneric =
(MODULE* (*)(MREADER*,int,BOOL))
SDL_LoadFunction(mikmod.handle, "Player_LoadGeneric");
if ( mikmod.Player_LoadGeneric == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.Player_SetPosition =
(void (*)(UWORD))
SDL_LoadFunction(mikmod.handle, "Player_SetPosition");
if ( mikmod.Player_SetPosition == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.Player_SetVolume =
(void (*)(SWORD))
SDL_LoadFunction(mikmod.handle, "Player_SetVolume");
if ( mikmod.Player_SetVolume == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.Player_Start =
(void (*)(MODULE*))
SDL_LoadFunction(mikmod.handle, "Player_Start");
if ( mikmod.Player_Start == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.Player_Stop =
(void (*)(void))
SDL_LoadFunction(mikmod.handle, "Player_Stop");
if ( mikmod.Player_Stop == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.VC_WriteBytes =
(ULONG (*)(SBYTE*,ULONG))
SDL_LoadFunction(mikmod.handle, "VC_WriteBytes");
if ( mikmod.VC_WriteBytes == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.drv_nos =
(MDRIVER*)
SDL_LoadFunction(mikmod.handle, "drv_nos");
if ( mikmod.drv_nos == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.md_device =
(UWORD*)
SDL_LoadFunction(mikmod.handle, "md_device");
if ( mikmod.md_device == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.md_mixfreq =
(UWORD*)
SDL_LoadFunction(mikmod.handle, "md_mixfreq");
if ( mikmod.md_mixfreq == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.md_mode =
(UWORD*)
SDL_LoadFunction(mikmod.handle, "md_mode");
if ( mikmod.md_mode == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.md_musicvolume =
(UBYTE*)
SDL_LoadFunction(mikmod.handle, "md_musicvolume");
if ( mikmod.md_musicvolume == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.md_pansep =
(UBYTE*)
SDL_LoadFunction(mikmod.handle, "md_pansep");
if ( mikmod.md_pansep == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.md_reverb =
(UBYTE*)
SDL_LoadFunction(mikmod.handle, "md_reverb");
if ( mikmod.md_reverb == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.md_sndfxvolume =
(UBYTE*)
SDL_LoadFunction(mikmod.handle, "md_sndfxvolume");
if ( mikmod.md_sndfxvolume == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
mikmod.md_volume =
(UBYTE*)
SDL_LoadFunction(mikmod.handle, "md_volume");
if ( mikmod.md_volume == NULL ) {
SDL_UnloadObject(mikmod.handle);
return -1;
}
}
++mikmod.loaded;
return 0;
}
void Mix_QuitMOD()
{
if ( mikmod.loaded == 0 ) {
return;
}
if ( mikmod.loaded == 1 ) {
SDL_UnloadObject(mikmod.handle);
}
--mikmod.loaded;
}
#else
int Mix_InitMOD()
{
if ( mikmod.loaded == 0 ) {
mikmod.MikMod_Exit = MikMod_Exit;
mikmod.MikMod_InfoDriver = MikMod_InfoDriver;
mikmod.MikMod_InfoLoader = MikMod_InfoLoader;
mikmod.MikMod_Init = MikMod_Init;
mikmod.MikMod_RegisterAllLoaders = MikMod_RegisterAllLoaders;
mikmod.MikMod_RegisterDriver = MikMod_RegisterDriver;
mikmod.MikMod_errno = &MikMod_errno;
mikmod.MikMod_strerror = MikMod_strerror;
mikmod.Player_Active = Player_Active;
mikmod.Player_Free = Player_Free;
mikmod.Player_LoadGeneric = Player_LoadGeneric;
mikmod.Player_SetPosition = Player_SetPosition;
mikmod.Player_SetVolume = Player_SetVolume;
mikmod.Player_Start = Player_Start;
mikmod.Player_Stop = Player_Stop;
mikmod.VC_WriteBytes = VC_WriteBytes;
mikmod.drv_nos = &drv_nos;
mikmod.md_device = &md_device;
mikmod.md_mixfreq = &md_mixfreq;
mikmod.md_mode = &md_mode;
mikmod.md_musicvolume = &md_musicvolume;
mikmod.md_pansep = &md_pansep;
mikmod.md_reverb = &md_reverb;
mikmod.md_sndfxvolume = &md_sndfxvolume;
mikmod.md_volume = &md_volume;
}
++mikmod.loaded;
return 0;
}
void Mix_QuitMOD()
{
if ( mikmod.loaded == 0 ) {
return;
}
if ( mikmod.loaded == 1 ) {
}
--mikmod.loaded;
}
#endif /* MOD_DYNAMIC */
#else
int Mix_InitMOD()
{
Mix_SetError("MOD audio is not supported");
return -1;
}
void Mix_QuitMOD()
{
}
#endif /* MOD_MUSIC */