Epson Moverio Pro BT-2000 Developer's Manual page 102

Remarks

Only

automatically secured for setPreviewCallback and setOneShotPreviewCallback.
If the buffer size you register is smaller than the image data, null is returned for

data.
If a registered buffer region is not secured in the application, an error log is output

when addCallbackBuffer is executed. Errors and exceptions do not occur.
MOVERIO Pro Developer's Guide (Rev.1.4)
necessary when using setPreviewCallbackWithBuffer.
96
Buffers are