Sensoray 2251 Rev.A - Manual (Page 32)

Retrieves the motion detection data. See demo application for example.
Parameters
region
the returned region mask. 0x02: region 1, 0x04: region 2, 0x08 region 3. The region mask
should be used to detect if motion detected or not.
buf
a pointer to motion macroblock map (must be size 208).
bufsize
size of bufmap. MUST use 208.
Board
board number in system.
The primary detection is by region. If further information is wanted, the MB map will show if
motion passed threshold in a given region on a macroblock by macroblock level (16 pixels x 16
pixels) on a bit level. For example, (buf[0] & 0x01) represents macroblock 1, (buf[0] & 0x02)
represents macroblock 2, (buf[1] & 0x01) represents macroblock 8.
Returns
0 if success, negative if error.
MID2250_API int SN_SetTimestampOverlay(
int idx,
const POINT *pPos,
const overlay_timestamp_t *pTimestamp,
int board
);
Starts automated timestamp overlay.
Parameters
idx
overlay index position to use
pPos
pointer to position of overlay
pTimestamp
pointer to timestamp structure
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