There is now an 'ExternalVad' class in the AnnotationsExtractor. The
Extractor takes an extra list of these in addition to the other
VADs. The external VAD runs an external program to generate the
annotations. Annotations are loaded and saved to a compressed Numpy format.
Also made a small fix to name a mixed file in a way so that files will not
be overwritten.
Also did some minor changes to the unittests.
TBR=alessiob@webrtc.org
Bug: webrtc:7494
Change-Id: I7816b04466be16cd635ac6ceab18cd7aad5325a4
Reviewed-on: https://webrtc-review.googlesource.com/23623
Commit-Queue: Alex Loiko <aleloi@webrtc.org>
Reviewed-by: Alex Loiko <aleloi@webrtc.org>
Reviewed-by: Alessio Bazzica <alessiob@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20819}
10dd7ed81a