Sensoray 2224 Windows Manuel d'utilisateur télécharger pdf (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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Sensoray 2224 Windows Manuel d'utilisateur Page 41