+extern bool GridLocked;
+
+//Operations defined in data_operations
+//extern int autoCorr(const int* in, int *out, size_t len, int window);
+extern int AskEdgeDetect(const int *in, int *out, int len, int threshold);
+extern int AutoCorrelate(const int *in, int *out, size_t len, int window, bool SaveGrph, bool verbose);
+extern int directionalThreshold(const int* in, int *out, size_t len, int8_t up, int8_t down);
+extern void save_restoreGB(uint8_t saveOpt);
+
+#define MAX_DEMOD_BUF_LEN (1024*128)
+extern uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
+extern size_t DemodBufferLen;
+extern size_t g_DemodStartIdx;
+extern bool showDemod;
+extern uint8_t g_debugMode;