tree f5beb45ec337e25b5349622be4c72b58edb5ca12
parent f674100ba8a40ff989573d5826fe645a6c8894a0
author Linus Nilsson <lnilsson@google.com> 1600474301 -0700
committer Linus Nilsson <lnilsson@google.com> 1606169824 -0800

Transcoder: Add support for pausing transcoding on a sync frame.

- Added support for stopping transcoders on a sync frame.
- Refactored MediaTrackTranscoders and MediaSampleWriter to stop()
asynchronously.
- Fixed callback and error handling logic in MediaTranscoder.
- Added tests for pause and stopping on sync frame.

Bug: 162886306
Test: Unit tests.

Change-Id: If689a10dfee198c674c4c13b865a7c56a901e075