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mesa: move _mesa_dlopen(), etc into separate dlopen.c file

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This commit is contained in:
Brian Paul
2008-12-09 14:26:02 -07:00
parent 12219210af
commit c573b9f94a
5 changed files with 147 additions and 72 deletions
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75
src/mesa/main/texcompress_s3tc.c
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@@ -29,7 +29,7 @@
*/
#ifndef USE_EXTERNAL_DXTN_LIB
#define USE_EXTERNAL_DXTN_LIB 0
#define USE_EXTERNAL_DXTN_LIB 1
#endif
#include "glheader.h"
@@ -37,15 +37,12 @@
#include "colormac.h"
#include "context.h"
#include "convolve.h"
#include "dlopen.h"
#include "image.h"
#include "texcompress.h"
#include "texformat.h"
#include "texstore.h"
#if USE_EXTERNAL_DXTN_LIB && !defined(__MINGW32__)
#include <dlfcn.h>
#endif
#ifdef __MINGW32__
#define DXTN_LIBNAME "dxtn.dll"
#define RTLD_LAZY 0
@@ -74,72 +71,6 @@ static dxtCompressTexFuncExt ext_tx_compress_dxtn = NULL;
static void *dxtlibhandle = NULL;
typedef void (*GenericFunc)(void);
/**
* Wrapper for dlopen().
* XXX Probably move this and the following wrappers into imports.h someday.
*/
static void *
_mesa_dlopen(const char *libname, int flags)
{
#if USE_EXTERNAL_DXTN_LIB
#ifdef __MINGW32__
return LoadLibrary(libname);
#else
return dlopen(libname, flags);
#endif
#else
return NULL;
#endif /* USE_EXTERNAL_DXTN_LIB */
}
/**
* Wrapper for dlsym() that does a cast to a generic function type,
* rather than a void *. This reduces the number of warnings that are
* generated.
*/
static GenericFunc
_mesa_dlsym(void *handle, const char *fname)
{
#if USE_EXTERNAL_DXTN_LIB
#ifdef __MINGW32__
return (GenericFunc) GetProcAddress(handle, fname);
#elif defined(__DJGPP__)
/* need '_' prefix on symbol names */
char fname2[1000];
fname2[0] = '_';
_mesa_strncpy(fname2 + 1, fname, 998);
fname2[999] = 0;
return (GenericFunc) dlsym(handle, fname2);
#else
return (GenericFunc) dlsym(handle, fname);
#endif
#else
return (GenericFunc) NULL;
#endif /* USE_EXTERNAL_DXTN_LIB */
}
/**
* Wrapper for dlclose().
*/
static void
_mesa_dlclose(void *handle)
{
#if USE_EXTERNAL_DXTN_LIB
#ifdef __MINGW32__
FreeLibrary(handle);
#else
dlclose(handle);
#endif
#endif
}
void
_mesa_init_texture_s3tc( GLcontext *ctx )
{
@@ -147,7 +78,7 @@ _mesa_init_texture_s3tc( GLcontext *ctx )
ctx->Mesa_DXTn = GL_FALSE;
#if USE_EXTERNAL_DXTN_LIB
if (!dxtlibhandle) {
dxtlibhandle = _mesa_dlopen(DXTN_LIBNAME, RTLD_LAZY | RTLD_GLOBAL);
dxtlibhandle = _mesa_dlopen(DXTN_LIBNAME, 0);
if (!dxtlibhandle) {
_mesa_warning(ctx, "couldn't open " DXTN_LIBNAME ", software DXTn "
"compression/decompression unavailable");