commit a55644813876d6e00fe4255c0e9d210d11a60caf
author Benjamin Wright <benwright@webrtc.org> Wed Apr 03 17:44:18 2019
committer Commit Bot <commit-bot@chromium.org> Fri Apr 05 07:58:05 2019
tree 1636eb1f0666868540ae136b9d2cee9ed763b419
parent 144575b65a35467378a20444c3c24b4bf89944a0

Don't recreate the VideoReceiveStream on SetFrameDecryptor in the MediaEngine.

This change introduces new logic to allow the injection of the FrameDecryptor
into an arbitrary already running VideoReceiveStream without resetting it. It
does this by taking advantage of the BufferedFrameDecryptor which will
forcefully be created regardless of whether a FrameDecryptor is passed in
during construction of the VideoReceiver if the
crypto_option.require_frame_encryption is true. By allowing the
BufferedFrameDecryptor to swap out which FrameDecryptor it uses this allows the
Receiver to switch decryptors without resetting the stream.

This is intended to mostly be used when you set your FrameDecryptor at a point
post creation for the first time.

Bug: webrtc:10416
Change-Id: If656b2acc447e2e77537cfa394729e5c3a8b660a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/130361
Commit-Queue: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Jonas Oreland <jonaso@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27458}