michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef GLLIBRARYLOADER_H_
michael@0: #define GLLIBRARYLOADER_H_
michael@0: 
michael@0: #include <stdio.h>
michael@0: 
michael@0: #ifdef WIN32
michael@0: #include <windows.h>
michael@0: #endif
michael@0: 
michael@0: #include "GLDefs.h"
michael@0: #include "nscore.h"
michael@0: #include "prlink.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace gl {
michael@0: 
michael@0: class GLLibraryLoader
michael@0: {
michael@0: public:
michael@0:     bool OpenLibrary(const char *library);
michael@0: 
michael@0:     typedef PRFuncPtr (GLAPIENTRY * PlatformLookupFunction) (const char *);
michael@0: 
michael@0:     enum {
michael@0:         MAX_SYMBOL_NAMES = 6,
michael@0:         MAX_SYMBOL_LENGTH = 128
michael@0:     };
michael@0: 
michael@0:     typedef struct {
michael@0:         PRFuncPtr *symPointer;
michael@0:         const char *symNames[MAX_SYMBOL_NAMES];
michael@0:     } SymLoadStruct;
michael@0: 
michael@0:     bool LoadSymbols(SymLoadStruct *firstStruct,
michael@0:                      bool tryplatform = false,
michael@0:                      const char *prefix = nullptr,
michael@0:                      bool warnOnFailure = true);
michael@0: 
michael@0:     /*
michael@0:      * Static version of the functions in this class
michael@0:      */
michael@0:     static PRFuncPtr LookupSymbol(PRLibrary *lib,
michael@0:                                   const char *symname,
michael@0:                                   PlatformLookupFunction lookupFunction = nullptr);
michael@0:     static bool LoadSymbols(PRLibrary *lib,
michael@0:                             SymLoadStruct *firstStruct,
michael@0:                             PlatformLookupFunction lookupFunction = nullptr,
michael@0:                             const char *prefix = nullptr,
michael@0:                             bool warnOnFailure = true);
michael@0: protected:
michael@0:     GLLibraryLoader() {
michael@0:         mLibrary = nullptr;
michael@0:         mLookupFunc = nullptr;
michael@0:     }
michael@0: 
michael@0:     PRLibrary *mLibrary;
michael@0:     PlatformLookupFunction mLookupFunc;
michael@0: };
michael@0: 
michael@0: } /* namespace gl */
michael@0: } /* namespace mozilla */
michael@0: 
michael@0: #endif /* GLLIBRARYLOADER_H_ */