use new device context for pitch calculation

Change-Id: I72ff0ad3a7a442829fb9a6d59df8358fc7aa9726
use device context resources

Change-Id: I7a221b1a227dfea945f092e29cfa0e422a6a3d4d
remove obsolete resource create call

Change-Id: I9536b3e9c24a7e55017c23ebe9191301da7137b2
added method to create sample frame data

Change-Id: Ic33f20567a1e2edcedf936bd46f8d2e25e20068a
use sample frame data

Change-Id: I4b6dfbeddb06d6e1137d81af6df9592bfe443902
added call to dispmanx update mechanism

Change-Id: Idc35ea701195ebdf2424ed3ac655173ec530d63f