static IsoString GetDemangledFunctionName( const char* symbol, IsoString& addrStr )
{
IsoString symbolStr( symbol );
addrStr.Clear();
// Get mangled function name. Example:
// /opt/PixInsight/bin/lib/libQtGui.so.4(_ZN7QWidget5eventEP6QEvent+0x411) [0x7fa271347811]
StringList tokens;
symbolStr.Break( tokens, '(' , true/*trim*/ );
if ( tokens.Length() != 2 )
return symbolStr;
// Take second token and split again.
StringList tokens2;
tokens[1].Break( tokens2, '+' , true/*trim*/ );
if ( tokens2.Length() != 2 )
return symbolStr;
// If there is no function name, do not set the addr string.
if ( !tokens2[0].IsEmpty() )
{
addrStr = tokens2[1];
addrStr.DeleteChar( '(' );
addrStr.DeleteChar( ')' );
}
// The first token of tokens2 contains the mangled string. Demangle it.
size_t funcnameSize = 256;
char funcname[ funcnameSize ];
int status;
IsoString token( tokens2[0] );
const char* demangledFuncname = abi::__cxa_demangle( token.c_str(), funcname, &funcnameSize, &status );
return (status == 0) ? IsoString( demangledFuncname ) : symbolStr;
}
void ZBarFilterImpl::busMessage (GstMessage *message)
{
if (GST_MESSAGE_SRC (message) == GST_OBJECT (zbar) &&
GST_MESSAGE_TYPE (message) == GST_MESSAGE_ELEMENT) {
const GstStructure *st;
guint64 ts;
gchar *type, *symbol;
st = gst_message_get_structure (message);
if (g_strcmp0 (gst_structure_get_name (st), "barcode") != 0) {
return;
}
if (!gst_structure_get (st, "timestamp", G_TYPE_UINT64, &ts,
"type", G_TYPE_STRING, &type, "symbol",
G_TYPE_STRING, &symbol, NULL) ) {
return;
}
std::string symbolStr (symbol);
std::string typeStr (type);
g_free (type);
g_free (symbol);
barcodeDetected (ts, typeStr, symbolStr);
}
}
void
zbar_receive_message (GstBus *bus, GstMessage *message, gpointer zbar)
{
ZBarFilter *filter = (ZBarFilter *) zbar;
if (GST_MESSAGE_SRC (message) == GST_OBJECT (filter->zbar) &&
GST_MESSAGE_TYPE (message) == GST_MESSAGE_ELEMENT) {
const GstStructure *st;
guint64 ts;
gchar *type, *symbol;
st = gst_message_get_structure (message);
if (g_strcmp0 (gst_structure_get_name (st), "barcode") != 0)
return;
if (!gst_structure_get (st, "timestamp", G_TYPE_UINT64, &ts,
"type", G_TYPE_STRING, &type, "symbol", G_TYPE_STRING, &symbol, NULL) )
return;
std::string symbolStr (symbol);
std::string typeStr (type);
g_free (type);
g_free (symbol);
filter->barcodeDetected (ts, typeStr, symbolStr);
}
}
