The File Driver Sample demonstrates how to implement a driver which uses the External Camera and the External Positional Device Tracker APIs to feed Vuforia Engine camera frame and device pose, respectively.
The File Driver sample can be downloaded from the Developer Portal. From device storage, the sample loads a sequence of pre-recorded camera frames and device poses. The pose, followed by the corresponding frame data, are then fed into Vuforia Engine. The package includes two sets of frame and pose sequences: Stones Image Target and Astronaut Image Target. Native developers should use the Stones Image Target while Unity developers should use the Astronaut Image Target sequence.
The FileDriver contains a sample sequence (XML) file which contains camera frame and pose information. For more information, refer to the Format of Camera and Pose XML Sequence File article.