Merge branch 'master' into maximumBitRate-adaptive-streaming

## Changelog

### Version 4.1.1

* Don't initialize filters on iOS unless a filter is set. This was causing a startup performance regression [#1360](https://github.com/react-native-community/react-native-video/pull/1360)

### Version 4.1.0

* Generate onSeek on Android ExoPlayer & MediaPlayer after seek completes [#1351](https://github.com/react-native-community/react-native-video/pull/1351)

* Remove unneeded onVideoSaved event [#1350](https://github.com/react-native-community/react-native-video/pull/1350)

* Disable AirPlay if sidecar text tracks are enabled [#1304](https://github.com/react-native-community/react-native-video/pull/1304)

* Add possibility to remove black screen while video is loading in Exoplayer [#1355](https://github.com/react-native-community/react-native-video/pull/1355)

### Version 4.0.1

* Add missing files to package.json [#1342](https://github.com/react-native-community/react-native-video/pull/1342)

* [fullscreenAutorotate](#fullscreenautorotate)

* [fullscreenOrientation](#fullscreenorientation)

* [headers](#headers)

* [hideShutterView](#hideshutterview)

* [id](#id)

* [ignoreSilentSwitch](#ignoresilentswitch)

* [maxBitRate](#maxbitrate)

* [onLoad](#onload)

* [onLoadStart](#onloadstart)

* [onProgress](#onprogress)

* [onSeek](#onseek)

* [onTimedMetadata](#ontimedmetadata)

### Methods

Platforms: Android ExoPlayer

#### hideShutterView

Controls whether the ExoPlayer shutter view (black screen while loading) is enabled.

* **false (default)** - Show shutter view 

* **true** - Hide shutter view

Platforms: Android ExoPlayer

#### id

Set the DOM id element so you can use document.getElementById on web platforms. Accepts string values.

On iOS, sidecar text tracks are only supported for individual files, not HLS playlists. For HLS, you should include the text tracks as part of the playlist.

Note: Due to iOS limitations, sidecar text tracks are not compatible with Airplay. If textTracks are specified, AirPlay support will be automatically disabled.

Example:

```

import { TextTrackType }, Video from 'react-native-video';

Platforms: all

#### onSeek

Callback function that is called when a seek completes.

Payload:

Property | Type | Description

--- | --- | ---

currentTime | number | The current time after the seek

seekTime | number | The requested time

Example:

```

{

  currentTime: 100.5

  seekTime: 100

}

```

Both the currentTime & seekTime are reported because the video player may not seek to the exact requested position in order to improve seek performance.

Platforms: Android ExoPlayer, Android MediaPlayer, iOS, Windows UWP

#### onTimedMetadata

Callback function that is called when timed metadata becomes available

Seek to the specified position represented by seconds. seconds is a float value.

`seek()` can only be called after the `onLoad` event has fired.

`seek()` can only be called after the `onLoad` event has fired. Once completed, the [onSeek](#onseek) event will be called.

Example:

```

  fullscreenOrientation: PropTypes.oneOf(['all','landscape','portrait']),

  progressUpdateInterval: PropTypes.number,

  useTextureView: PropTypes.bool,

  hideShutterView: PropTypes.bool,

  onLoadStart: PropTypes.func,

  onLoad: PropTypes.func,

  onBuffer: PropTypes.func,

    private ViewGroup.LayoutParams layoutParams;

    private boolean useTextureView = false;

    private boolean hideShutterView = false;

    public ExoPlayerView(Context context) {

        this(context, null);

        }

    }

    private void updateShutterViewVisibility() {

        shutterView.setVisibility(this.hideShutterView ? View.INVISIBLE : View.VISIBLE);

    }

    /**

     * Set the {@link SimpleExoPlayer} to use. The {@link SimpleExoPlayer#setTextOutput} and

     * {@link SimpleExoPlayer#setVideoListener} method of the player will be called and previous

        updateSurfaceView();

    }

    public void setHideShutterView(boolean hideShutterView) {

        this.hideShutterView = hideShutterView;

        updateShutterViewVisibility();

    }

    private final Runnable measureAndLayout = new Runnable() {

        @Override

        public void run() {

    private float rate = 1f;

    private float audioVolume = 1f;

    private int maxBitRate = 0;

    private long seekTime = C.TIME_UNSET;

    private int minBufferMs = DefaultLoadControl.DEFAULT_MIN_BUFFER_MS;

    private int maxBufferMs = DefaultLoadControl.DEFAULT_MAX_BUFFER_MS;

    private float mProgressUpdateInterval = 250.0f;

    private boolean playInBackground = false;

    private boolean useTextureView = false;

    private boolean hideShutterView = false;

    private Map<String, String> requestHeaders;

    // \ End props

    @Override

    public void onSeekProcessed() {

        // Do nothing.

        eventEmitter.seek(player.getCurrentPosition(), seekTime);

        seekTime = C.TIME_UNSET;

    }

    @Override

    public void seekTo(long positionMs) {

        if (player != null) {

            eventEmitter.seek(player.getCurrentPosition(), positionMs);

            seekTime = positionMs;

            player.seekTo(positionMs);

        }

    }

        exoPlayerView.setUseTextureView(useTextureView);

    }

    public void setHideShutterView(boolean hideShutterView) {

        exoPlayerView.setHideShutterView(hideShutterView);

    }

    public void setBufferConfig(int newMinBufferMs, int newMaxBufferMs, int newBufferForPlaybackMs, int newBufferForPlaybackAfterRebufferMs) {

        minBufferMs = newMinBufferMs;

        maxBufferMs = newMaxBufferMs;