camera_get_vf_property()

Updated: May 06, 2022

Retrieve one or more properties of the viewfinder

Synopsis:

#include <camera/camera_api.h>
#define camera_get_vf_property(handle,
                               args...)

Arguments:

handle
The handle returned by a call to the camera_open() function.
args
A series of comma-delimited property-value pairs where each value must be a pointer to a variable of the expected type. For details on how to specify multiple property-value pairs, see the function description.

Library:

libcamapi

Description:

For the args argument, you can provide one or more property-value pairs using a camera_imgprop_t value for the name of each property and a pointer to the correct type, such as an int or double, for the value. The following properties can be used with this function:
Note:

There is no type-checking performed by the compiler. Therefore, you must ensure that the value you provide for each property matches the expected data type. Data type mismatches can result in undefined behavior and cause your application to crash.

You can specify multiple property-value pairs by delimiting them with a comma as follows:
 camera_get_vf_property( camera_handle,
                         CAMERA_IMGPROP_WIDTH, &vf_width,
                         CAMERA_IMGPROP_HEIGHT, &vf_height,
                         CAMERA_IMGPROP_ROTATION, &vf_rotation,
                         CAMERA_IMGPROP_FRAMERATE, &framerate );

Returns:

CAMERA_EOK when the function successfully completes, otherwise another camera_error_t value that provides the reason that the call failed.