Extract the detected face yaw angle from the provided face metadata.
int camera_meta_get_face_yaw(const camera_metadata_t metadata, float *yaw)
The metadata supplied to the user-defined consumer function by camera_meta_iterate_metadata().
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)
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.
Last modified: 2014-06-24