camera_meta_get_face_yaw()

Extract the detected face yaw angle from the provided face metadata.

Synopsis:

int camera_meta_get_face_yaw(const camera_metadata_t metadata,                 
                             float *yaw)

Since:

BlackBerry 10.0.0

Arguments:

metadata

The metadata supplied to the user-defined consumer function by camera_meta_iterate_metadata().

yaw

The angle of rotation of the face around the y-axis.

Library:

libcamapi (For the qcc command, use the -l camapi option to link against this library)

Description:

The yaw value ranges from -180 degrees to +180 degrees relative to the preview buffer coordinate space. A negative yaw angle indicates that the face is looking to the left from the face's frame of reference. A positive yaw angle indicates that the face is looking to the right from the face's frame of reference.

Returns:

CAMERA_EOK when the function successfully completes, CAMERA_ENODATA if the camera did not provide a roll value otherwise another camera_error_t value that provides the reason that the call failed.

Last modified: 2014-06-24



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