61a86295fd
The complexity around not enabling the video renderer before it has a valid surface is because MediaCodecTrackRenderer supports a "discard" mode where it pulls through and discards samples without a decoder. This mode means that if the demo app were to enable the renderer before supplying the surface, the renderer could discard the first few frames prior to getting the surface, meaning video rendering wouldn't happen until the following sync frame. To get a handle on complexity, I think we're better off just removing support for this mode, which nicely decouples how the demo app handles surfaces v.s. how it handles enabling/disabling renderers.
Demo application
This folder contains a demo application that uses ExoPlayer to play a number of test streams. It can be used as a starting point or reference project when developing other applications that make use of the ExoPlayer library.