Sensoray 2253 Windows - Manual (Page 38)

Please see the demo app for an example on how to use the output overlay.
ovl
pointer to overlay structure to update. See mid2253types.h.
MID2253_OVL_STRUCT
id: unique id representing this overlay.
transparent: transparent field. (0 transparent to 7 opaque)
update: update field. Mask of the following:
MID2253_OVERLAY_UPDATE_DISPLAY,
MID2253_OVERLAY_UPDATE_TRANSPARENT,
MID2253_OVERLAY_UPDATE_POSITION
reserved: future use
xOffset: x offset from left side
yOffset: y offset from the top
length: length of data
strmidx
stream index (0 or 1).
devid
device id in the system (use 0 with a single board installed).
S2253_SetOutputMode
MID2253_API int __stdcall S2253_SetOutputMode (
MID2253_OUTPUT_MODE mode,
int devid);
This function controls what is displayed on the physical video output channel.
Please note that when decoding (S2253_StartDecode), the output is
automatically set to MID2253_OUTPUT_STREAM.
mode
MID2253_OUTPUT_IDLE (no video output), MID2253_OUTPUT_PASSTHRU
(capture passthru), MID2253_OUTPUT_COLORBARS,
MID2253_OUTPUT_FLASH (displays 1 white frame then switches to idle),
MID2253_OUTPUT_STREAM (normally unused, for decode).
devid
device id in the system (use 0 with a single board installed).
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