Renderer.WakeupListener (ExoPlayer library)

Enclosing interface:

Renderer
```
public static interface Renderer.WakeupListener
```
Some renderers can signal when Renderer.render(long, long) should be called.
That allows the player to sleep until the next wakeup, instead of calling Renderer.render(long, long) in a tight loop. The aim of this interrupt based scheduling is to save power.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onSleep()`	The renderer no longer needs to render until the next wakeup.
`void`	`onWakeup()`	The renderer needs to render some frames.

- Method Detail
  - onSleep
```
void onSleep()
```
    The renderer no longer needs to render until the next wakeup.
    Must be called from the thread ExoPlayer invokes the renderer from.
  - onWakeup
```
void onWakeup()
```
    The renderer needs to render some frames. The client should call Renderer.render(long, long) at its earliest convenience.
    Can be called from any thread.