Adding option to control DSR check during serial open

Author: adamrankin

ndicapi.cxx

@@ -718,7 +718,7 @@ ndicapiExport char* ndiSerialDeviceName(int i)
 }
 
 //----------------------------------------------------------------------------
-ndicapiExport int ndiSerialProbe(const char* device)
+ndicapiExport int ndiSerialProbe(const char* device, bool checkDSR)
 {
   char reply[1024];
   char init_reply[16];
@@ -732,7 +732,7 @@ ndicapiExport int ndiSerialProbe(const char* device)
   }
 
   // check DSR line to see whether any device is connected
-  if (!ndiSerialCheckDSR(serial_port))
+  if (checkDSR && !ndiSerialCheckDSR(serial_port))
   {
     ndiSerialClose(serial_port);
     return NDI_DSR_FAILURE;

ndicapi.h

@@ -221,7 +221,8 @@ ndicapiExport char* ndiSerialDeviceName(int i);
   -# if the "INIT:" succeeds, send "VER:0" and check for response.
   -# restore the device to its previous state and close the device.
 
-  \param device  name of a valid serial port device
+  \param device    name of a valid serial port device
+  \param checkDSR  whether or not to perform a DSR check
 
   \return one of:
   - NDI_OKAY         -  probe was successful
@@ -232,7 +233,7 @@ ndicapiExport char* ndiSerialDeviceName(int i);
   - NDI_TIMEOUT      -  timeout while waiting for data
   - NDI_PROBE_FAIL   -  the device found was not an NDI device
 */
-ndicapiExport int ndiSerialProbe(const char* device);
+ndicapiExport int ndiSerialProbe(const char* device, bool checkDSR);
 
 /*! \ingroup NDIMethods
   Open communication with the NDI device on the specified