testing library

Test seam for package:video_frames: the platform host APIs and their messages, so tests can replace VideoFrames.readerApi and VideoFrames.writerApi with fakes.

These types are generated and may change in any release; apps shouldn't use them outside tests.

Classes

VideoFrameMessage
VideoInfoMessage
VideoReaderHostApi
Decoding, on its own serial background queue.
VideoWriterHostApi
Encoding, on its own serial background queue.