Channel Class

Accessing a physical analog channel requires a handle to the channel.

A channel handle is a reference to a channel holding a physical resource (port). The channel handle is the first argument to be passed to many MXF channel oriented functions.

To get the handle to an analog physical port regardless of the installed devices, the mxfModuleChannelGet() function may be used by specifying the physical port index.

Alternatively, it is possible to use the mxfModuleChannelAllGet() function with the chnClass argument MXF_CLASS_ANALOG.

If MXF_DEVICE_ALL is specified with mxfSystemDeviceAllGet() function, all handles of detected devices are returned.

{
HMXF_SERVER server=0;
HMXF_DEVICE device;
HMXF_MODULE module;
HMXF_CHANNEL rx[2];
uint32 rc;
uint64 deviceCount;
uint64 moduleCount;
uint64 channelCount;
uint64 device     = MXF_DEVICE_ALL;    // All devices
uint64 moduleType = MXF_MODULE_ADC;    // ADC module
uint64 chnClass   = MXF_CLASS_ANALOG;  // Analog channel class
uint64 subClass   = MXF_SCLASS_ALL;    // All channel subclasses

   // Connects to the local server
   rc = mxfServerConnect("0.0.0.0", "", "", FALSE, &server);
   if (rc)
   {
      printf("Error connection 0x%08lx", rc);
      return rc;
   }
   // Inits MXF library
   rc = mxfSystemInit(server);
   if (!rc)
   {
      // Gets the device handle
      rc = mxfSystemDeviceAllGet(server, device, 1, &deviceCount, &device);
      if (!rc && deviceCount)
      {
         // Gets the module handle
         rc = mxfDeviceModuleAllGet(device, moduleType, 1, &moduleCount, &module);

         // Gets the channel handle
         if (!rc && moduleCount)
            rc = mxfModuleChannelAllGet(module, chnClass, subClass, 2, &channelCount, rx);
       }
   }
}