// load one specific plugin
bool Plugins::load_plugin (const string& path)
{
typedef const char* (*__plugin_version__)(void);
typedef Sass_Function_List (*__plugin_load_fns__)(void);
typedef Sass_Importer_List (*__plugin_load_imps__)(void);
if (LOAD_LIB(plugin, path))
{
// try to load initial function to query libsass version suppor
if (LOAD_LIB_FN(__plugin_version__, plugin_version, "libsass_get_version"))
{
// get the libsass version of the plugin
if (!compatibility(plugin_version())) return false;
// try to get import address for "libsass_load_functions"
if (LOAD_LIB_FN(__plugin_load_fns__, plugin_load_functions, "libsass_load_functions"))
{
Sass_Function_List fns = plugin_load_functions();
while (fns && *fns) { functions.push_back(*fns); ++ fns; }
}
// try to get import address for "libsass_load_importers"
if (LOAD_LIB_FN(__plugin_load_imps__, plugin_load_importers, "libsass_load_importers"))
{
Sass_Importer_List imps = plugin_load_importers();
while (imps && *imps) { importers.push_back(*imps); ++ imps; }
}
// try to get import address for "libsass_load_headers"
if (LOAD_LIB_FN(__plugin_load_imps__, plugin_load_headers, "libsass_load_headers"))
{
Sass_Importer_List imps = plugin_load_headers();
while (imps && *imps) { headers.push_back(*imps); ++ imps; }
}
// success
return true;
}
else
{
// print debug message to stderr (should not happen)
cerr << "failed loading 'libsass_support' in <" << path << ">" << endl;
if (const char* dlsym_error = dlerror()) cerr << dlsym_error << endl;
CLOSE_LIB(plugin);
}
}
else
{
// print debug message to stderr (should not happen)
cerr << "failed loading plugin <" << path << ">" << endl;
if (const char* dlopen_error = dlerror()) cerr << dlopen_error << endl;
}
return false;
}
static lib_handle load_library(char* errmsg)
{
# if defined(_WIN32) || defined(_WIN64) || defined(__LCC__)
const char *PvLibName = "PvAPI.dll";
# else
const char *PvLibName = "libPvAPI.so";
# endif
lib_handle lib;
union tPvLibFnConv conv;
errmsg[0] = 0;
# if defined(_WIN32) || defined (_WIN64) || defined(__LCC__)
lib = LoadLibrary(PvLibName);
# else
lib = dlopen(PvLibName, RTLD_NOW | RTLD_LOCAL);
# endif
if(lib == NULL)
{
sprintf(errmsg, "Could not open library: %s", PvLibName);
}
else
{
LOAD_LIB_FN(ss_PvInitializeNoDiscovery, conv, lib, "PvInitializeNoDiscovery");
LOAD_LIB_FN(ss_PvCameraOpenByAddr, conv, lib, "PvCameraOpenByAddr");
LOAD_LIB_FN(ss_PvCaptureStart, conv, lib, "PvCaptureStart");
LOAD_LIB_FN(ss_PvAttrUint32Set, conv, lib, "PvAttrUint32Set");
LOAD_LIB_FN(ss_PvAttrEnumSet, conv, lib, "PvAttrEnumSet");
LOAD_LIB_FN(ss_PvCommandRun, conv, lib, "PvCommandRun");
LOAD_LIB_FN(ss_PvAttrUint32Get, conv, lib, "PvAttrUint32Get");
LOAD_LIB_FN(ss_PvCaptureQueueFrame, conv, lib, "PvCaptureQueueFrame");
LOAD_LIB_FN(ss_PvCaptureEnd, conv, lib, "PvCaptureEnd");
LOAD_LIB_FN(ss_PvCaptureQueueClear, conv, lib, "PvCaptureQueueClear");
LOAD_LIB_FN(ss_PvCameraClose, conv, lib, "PvCameraClose");
LOAD_LIB_FN(ss_PvUnInitialize, conv, lib, "PvUnInitialize");
}
return lib;
}
