bool Plugin::validatePluginLib(vpr::LibraryPtr pluginLib)
{
plugin::Module pm(pluginLib);
AbstractPlugin::basicValidation(pm);
const std::string get_version_func("getPluginInterfaceVersion");
boost::function<void (vpr::Uint32&, vpr::Uint32&)> version_func =
pm.getFunction<void (vpr::Uint32&, vpr::Uint32&)>(get_version_func);
vpr::Uint32 major_ver;
vpr::Uint32 minor_ver;
version_func(major_ver, minor_ver);
if ( major_ver != VRKIT_PLUGIN_API_MAJOR )
{
std::ostringstream msg_stream;
msg_stream << "Interface version mismatch: run-time does not match "
<< "compile-time plug-in setting ("
<< VRKIT_PLUGIN_API_MAJOR << "." << VRKIT_PLUGIN_API_MINOR
<< " != " << major_ver << "." << minor_ver << ")";
throw PluginInterfaceException(msg_stream.str(), VRKIT_LOCATION);
}
return true;
}
static int check_version(const char *lib_name, void *handle, const char *symbol,
unsigned ver_inc)
{
ffmpeg_version_t version_func;
unsigned ver_lib;
const char *result_msgs[] = { "full match","major.minor matches","major matches","unsupported" };
enum { FULL_MATCH=0, MAJOR_MINOR_MATCH=1, MAJOR_MATCH=2, NO_MATCH=3 } result;
version_func = (ffmpeg_version_t)vice_dynlib_symbol(handle, symbol);
if (version_func == NULL) {
log_debug("ffmpeg %s: version function '%s' not found!",lib_name, symbol);
return -1;
}
ver_lib = version_func();
/* version matches exactly */
if (ver_lib == ver_inc) {
result = FULL_MATCH;
} else {
/* compare major.minor */
ver_lib >>= 8;
ver_inc >>= 8;
if (ver_lib == ver_inc) {
result = MAJOR_MINOR_MATCH;
} else {
/* compare major */
ver_lib >>= 8;
ver_inc >>= 8;
if (ver_lib == ver_inc) {
result = MAJOR_MATCH;
} else {
result = NO_MATCH;
}
}
}
log_debug("ffmpeg %8s lib has version %06x, VICE expects %06x: %s",
lib_name, ver_lib, ver_inc, result_msgs[result]);
/* now decide what level of matching fails */
if (result == NO_MATCH) {
return -1;
}
return 0;
}
