Sensoray 2224 Windows - Manual (Page 41)

callback function. See header file for definition of cbfunc_t function.
hdev
handle to device (obtained from S2226_OpenBoard).
Returns
0 on success, negative value if error (see mid2226types.h for error codes list).
MID2226_API int S2226_RegisterCallbackRaw(
cbfunc_t callback_function,
HANDLE hdev
);
Registers a callback function. Call before S2226_StartPreview, S2226_StartRecord,
S2226_StartPreviewAndRecord or S2226_StartCallback to receive the data as it is captured. Data
available in the callback is the raw preview downscaled stream (320x240). The callback is
unregistered after S2226_StopStream or S2226_StopRawPreview. Each callback will occur on
capture of a single complete frame (but not necessarily synchronized to the MPEG stream).
Parameters
callback_function
callback function. See header file for definition of cbfunc_t function.
hdev
handle to device (obtained from S2226_OpenBoard).
Returns
0 on success, negative value if error (see mid2226types.h for error codes list).
MID2226_API int S2226_StartRawPreviewCallback(
HANDLE hdev
);
This is similar to S2226_StartRawPreview, but it does not render the image (display it) on the
screen. It is designed to be used in conjunction with S2226_RegisterCallbackRaw in order to grab
raw frames faster (by streaming) instead of using the other S2226_ snapshot functions. Please
see the section S2226 Snapshot demo later in this manual.
Parameters
hdev
handle to device (obtained from S2226_OpenBoard).
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