133 lines
3.8 KiB
C++
Executable File
133 lines
3.8 KiB
C++
Executable File
//-----------------------------------------------------------------------------
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// Torque Game Engine
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// Copyright (C) GarageGames.com, Inc.
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//-----------------------------------------------------------------------------
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#include "platformWin32/platformWin32.h"
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#include "console/console.h"
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#include "al/altypes.h"
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#include "al/alctypes.h"
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#define INITGUID
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#include "al/eaxtypes.h"
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// Define the OpenAL and Extension Stub functions
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#define AL_FUNCTION(fn_return, fn_name, fn_args, fn_value) fn_return stub_##fn_name fn_args{ fn_value }
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#include "al/al_func.h"
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#include "al/alc_func.h"
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#include "al/eax_func.h"
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#undef AL_FUNCTION
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// Declare the OpenAL and Extension Function pointers
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// And initialize them to the stub functions
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#define AL_FUNCTION(fn_return,fn_name,fn_args, fn_value) fn_return (*fn_name)fn_args = stub_##fn_name;
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#include "al/al_func.h"
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#include "al/alc_func.h"
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#include "al/eax_func.h"
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#undef AL_FUNCTION
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/*! Get a function address from the OpenAL DLL and bind it to the
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* function pointer
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*/
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static bool bindFunction( void *&fnAddress, const char *name )
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{
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// JMQ: MinGW gcc 3.2 needs the cast to void*
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fnAddress = (void*)(GetProcAddress( winState.hinstOpenAL, name ));
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if( !fnAddress )
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Con::errorf(ConsoleLogEntry::General, " Missing OpenAL function '%s'", name);
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return (fnAddress != NULL);
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}
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/*! Get a function address for an OpenAL extension function and bind it
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* to it's function pointer
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*/
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static bool bindExtensionFunction( void *&fnAddress, const char *name )
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{
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fnAddress = alGetProcAddress( (ALubyte*)name );
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if( !fnAddress )
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Con::errorf(ConsoleLogEntry::General, " Missing OpenAL Extension function '%s'", name);
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return (fnAddress != NULL);
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}
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/*! Bind the functions in the OpenAL DLL to the al interface functions
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*/
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static bool bindOpenALFunctions()
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{
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bool result = true;
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#define AL_FUNCTION(fn_return, fn_name, fn_args, fn_value) result &= bindFunction( *(void**)&fn_name, #fn_name);
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#include "al/al_func.h"
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#include "al/alc_func.h"
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#undef AL_FUNCTION
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return result;
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}
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/*! Bind the stub functions to the al interface functions
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*/
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static void unbindOpenALFunctions()
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{
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#define AL_FUNCTION(fn_return, fn_name, fn_args, fn_value) fn_name = stub_##fn_name;
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#include "al/al_func.h"
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#include "al/alc_func.h"
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#include "al/eax_func.h"
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#undef AL_FUNCTION
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}
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/*! Bind the EAX Extension functions to the EAX interface functions
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*/
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static bool bindEAXFunctions()
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{
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bool result = true;
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#define AL_FUNCTION(fn_return, fn_name, fn_args, fn_value) result &= bindExtensionFunction( *(void**)&fn_name, #fn_name);
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#include "al/eax_func.h"
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#undef AL_FUNCTION
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return result;
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}
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namespace Audio
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{
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/*! Shutdown and Unload the OpenAL DLL
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*/
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void OpenALDLLShutdown()
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{
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if (winState.hinstOpenAL)
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FreeLibrary(winState.hinstOpenAL);
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winState.hinstOpenAL = NULL;
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unbindOpenALFunctions();
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}
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/*! Dynamically Loads the OpenAL DLL if present and binds all the functions.
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* If there is no DLL or an unexpected error occurs binding functions the
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* stub functions are automatically bound.
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*/
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bool OpenALDLLInit()
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{
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OpenALDLLShutdown();
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winState.hinstOpenAL = LoadLibrary( dT("OpenAl32.dll") );
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if(winState.hinstOpenAL != NULL)
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{
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// if the DLL loaded bind the OpenAL function pointers
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if(bindOpenALFunctions())
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{
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// if EAX is available bind it's function pointers
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//if (alIsExtensionPresent((ALubyte*)"EAX" ))
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// Do not bind the EAX extensions for the time being - MDF
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// bindEAXFunctions();
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return(true);
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}
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// an error occured, shutdown
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OpenALDLLShutdown();
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}
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return(false);
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}
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} // end namespace Audio
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