Automatic Transfer Control

When using Automatic Transfer Control mode, the transfer of blocks to the host are controlled the device’s acquisition controls.

In Automatic Transfer Control mode, the TransferOperationMode is read only and set to Continuous. Using Continuous TransferOperationMode is similar to when Transfer Control is not enabled, except the host application can stop data transmission without stopping image acquisition on the device.

The following pseudocode demonstrates enabling Automatic Transfer Control mode on the camera.

// Connect to camera
// Get device node map 

// Set desired Pixel Format, Width, Height

// Optional: Read TransferQueueMaxBlockCount to determine the number of blocks 
// that can be stored in the on-camera buffer with the current device settings 

TransferControlMode = Automatic;
TransferQueueMode = FirstInFirstOut;

AcquisitionStart();             // When in Automatic Transfer Control Mode, the 
                                // AcquisitionStart command automatically executes the TransferStart command 
                                
// Acquire images
// Images will be accumulating into the on-camera buffer
// Blocks will be transmitted to the host system automatically until TransferPause or AcquisitionStop is executed

// Retrieve images on host system

In Automatic Transfer Control mode, the following commands are available:

TransferPause to pause transfer of blocks without executing TransferStop or AcquisitionStop.
TransferResume to resume transfer of blocks after TransferPause has been called.
TransferAbort to abort transfer of blocks.
TransferStop to stop transfer of blocks.

When blocks are not transmitted from the on-camera buffer to the host quickly enough and the amount of blocks to be stored in the buffer exceeds TransferQueueMaxBlockCount, the new images will will be dropped. Set TransferStatusSelector to QueueOverflow and read TransferStatus to determine if a block is lost.

Atlas IP67 2.8 MP Technical Reference