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olly 7e6a1418e3 Demo apps: Annotate @NonNull where necessary

Because we now annotate not-null by default in ExoPlayer
library modules, we're seeing warnings in the demo apps where
we override a method and don't explicitly specify an equivalent
@NotNull annotation.

It's probably confusing to use not-null by default for the
demo apps, so this change uses @NonNull where necessary to fix
the warnings.

PiperOrigin-RevId: 296000044

2020-02-25 21:21:54 +00:00

src/main

Demo apps: Annotate @NonNull where necessary

2020-02-25 21:21:54 +00:00

build.gradle

Bump targetSdkVersion to 29 for demo apps only

2019-12-04 09:58:47 +00:00

README.md

Publish SurfaceControl demo

2019-09-22 00:16:15 +01:00

README.md

ExoPlayer SurfaceControl demo

This app demonstrates how to use the SurfaceControl API to redirect video output from ExoPlayer between different views or off-screen. SurfaceControl is new in Android 10, so the app requires minSdkVersion 29.

The app layout has a grid of SurfaceViews. Initially video is output to one of the views. Tap a SurfaceView to move video output to it. You can also tap the buttons at the top of the activity to move video output off-screen, to a full-screen SurfaceView or to a new activity.

When using SurfaceControl, the MediaCodec always has the same surface attached to it, which can be freely 'reparented' to any SurfaceView (or off-screen) without any interruptions to playback. This works better than calling MediaCodec.setOutputSurface to change the output surface of the codec because MediaCodec does not re-render its last frame when that method is called, and because you can move output off-screen easily (setOutputSurface can't take a null surface, so the player has to use a DummySurface, which doesn't handle protected output on all devices).