# Exoplayer v2.11

{% hint style="info" %}
This guide uses Exoplayer 2.11.4 as a reference. Please replace with the correct version of v2.11 player
{% endhint %}

### Prerequisites 

1. ExoPlayer-r2.11.4 <https://github.com/google/ExoPlayer>&#x20;
2. MediaMelon SmartSight SDK `smartstreaming.aar`

### Step 1: Set up the build environment&#x20;

Note `$EXOPROJECT = {ExoPlayer-r2.11.4}`&#x20;

The SDK files are added to the build environment and the required network permissions are enabled.&#x20;

1. Copy smartstreaming-release.aar provided with the release package to the exoplayer project, Example `$EXOPROJECT/demos/main/smartstreaming-release.aar`&#x20;
2. Add the following library to `$EXOPROJECT/demos/main/build.gradle` :-

```java
dependencies {
  .
  .
  .
   //<!-- <MMSmartStreaming 1b> -->
    api files ('smartstreaming-release.aar')
  //<!-- </MMSmartStreaming 1b> -->
  
}
```

Add network permissions to `$EXOPROJECT/demos/main/src/main/AndroidManifest.xml`

```java
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

<!-- <MMSmartStreaming 1c> -->
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<!-- </MMSmartStreaming 1c> -->
```

### Step 2: Register SDK

The player application must register the SDK and provide player information once when the application launches. Please note that values provided in this integration step persist across video sessions. This is typically done when the player itself is initialized.&#x20;

{% hint style="info" %}
You can check SDK registration status with `getRegistrationStatus()`. If the registration is not complete, use the `registerMMSmartStreaming()` to complete the registration.
{% endhint %}

#### Step 2a: Import packages

`$EXOPROJECT/demos/main/src/main/java/com/google/android/exoplayer2/demo/PlayerActivity.java`

```java
// <MMSmartStreaming 2a>
import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
import com.mediamelon.smartstreaming.MMQBRMode;
import com.mediamelon.smartstreaming.MMSmartStreaming;
import com.mediamelon.smartstreaming.MMSmartStreamingExo2;
import com.mediamelon.smartstreaming.MMSmartStreamingInitializationStatus;
import com.mediamelon.smartstreaming.MMSmartStreamingObserver;
import java.util.ArrayList;
import android.util.Log;
// </MMSmartStreaming 2a>
```

#### Step 2b: Registration

&#x20;Perform registration tasks by modifying the `onCreate()` method in `$EXOPROJECT/demos/main/src/main/java/com/google/android/exoplayer2/demo/PlayerActivity.java`

{% hint style="info" %}
The `enableLogTrace()` feature should be enabled for testing during the integration process. Set this to False before releasing the player to production
{% endhint %}

```java
public void onCreate(Bundle savedInstanceState) {
  ...
  }else {
    trackSelectorParameters = new DefaultTrackSelector.ParametersBuilder().build();
    clearStartPosition();
  }

  //<MMSmartStreaming 2b>
  Log.d("SmartStreamingIntgr", MMSmartStreamingExo2.getVersion());
  MMSmartStreamingExo2.enableLogTrace(true); //set to "false" before releasing player to production
  if (MMSmartStreamingExo2.getRegistrationStatus() == false)

{ //Check if it is the first time Registration process is done

    MMSmartStreamingExo2.registerMMSmartStreaming($PLAYERNAME, $CUSTOMERID, $SUBSCRIBERID, $DOMAINNAME, $SUBSCRIBERTYPE, $SUBSCRIBERTAG);
    MMSmartStreamingExo2.reportPlayerInfo("CustomPlayerName", ExoPlayerLibraryInfo.VERSION, "1.0");
    MMSmartStreamingExo2.getInstance().setContext(getApplicationContext()); //Please make sure to provide the application's context here, and not the activity's context
  }
  // </MMSmartStreaming 2b> 
}
```

### Step 3: Initialize Session & Report User Intent to Playback <a href="#step-3-initialize-session-and-report-user-intent-to-playback" id="step-3-initialize-session-and-report-user-intent-to-playback"></a>

The SDK must be initialized at the start of each video session. Initialization includes setting the application context, initializing the playback session, and indicating the intent for playback with the SDK.

Provide application context to SDK by modifying the `createTopLevelMediaSource()` method in `$EXOPROJECT/demos/main/src/main/java/com/google/android/exoplayer2/demo/PlayerActivity.java`

```java
@Nullable
  private MediaSource createTopLevelMediaSource(Intent intent) {
    String action = intent.getAction();
    boolean actionIsListView = ACTION_VIEW_LIST.equals(action);
    if (!actionIsListView && !ACTION_VIEW.equals(action)) {
      showToast(getString(R.string.unexpected_intent_action, action));
      finish();
      return null;
    }

    Sample intentAsSample = Sample.createFromIntent(intent);
    UriSample[] samples =
        intentAsSample instanceof Sample.PlaylistSample
            ? ((Sample.PlaylistSample) intentAsSample).children
            : new UriSample[] {(UriSample) intentAsSample};

    boolean seenAdsTagUri = false;
    for (UriSample sample : samples) {
      seenAdsTagUri |= sample.adTagUri != null;
      if (!Util.checkCleartextTrafficPermitted(sample.uri)) {
        showToast(R.string.error_cleartext_not_permitted);
        return null;
      }
      if (Util.maybeRequestReadExternalStoragePermission(/* activity= */ this, sample.uri)) {
        // The player will be reinitialized if the permission is granted.
        return null;
      }
    }

    MediaSource[] mediaSources = new MediaSource[samples.length];
    for (int i = 0; i < samples.length; i++) {
      mediaSources[i] = createLeafMediaSource(samples[i]);
      Sample.SubtitleInfo subtitleInfo = samples[i].subtitleInfo;
      if (subtitleInfo != null) {
        if (Util.maybeRequestReadExternalStoragePermission(
            /* activity= */ this, subtitleInfo.uri)) {
          // The player will be reinitialized if the permission is granted.
          return null;
        }
        Format subtitleFormat =
            Format.createTextSampleFormat(
                /* id= */ null,
                subtitleInfo.mimeType,
                C.SELECTION_FLAG_DEFAULT,
                subtitleInfo.language);
        MediaSource subtitleMediaSource =
            new SingleSampleMediaSource.Factory(dataSourceFactory)
                .createMediaSource(subtitleInfo.uri, subtitleFormat, C.TIME_UNSET);
        mediaSources[i] = new MergingMediaSource(mediaSources[i], subtitleMediaSource);
      }
    }
    MediaSource mediaSource =
        mediaSources.length == 1 ? mediaSources[0] : new ConcatenatingMediaSource(mediaSources);
        
    // //<MMSmartStreaming 3> Integration start ------
    if(mediaSources.length > 0 ){
      String mediaUrl = samples[0].uri.toString();
      MMSmartStreamingExo2.getInstance().initializeSession(player, $QBRREQUESTEDMODE, mediaUrl, $ASSETMETAURL, "ASSETID", "ASSETNAME", "VIDEOID", null);
    }
    // //</MMSmartStreaming 3> Integration end -------

    if (seenAdsTagUri) {
      Uri adTagUri = samples[0].adTagUri;
      if (actionIsListView) {
        showToast(R.string.unsupported_ads_in_concatenation);
      } else {
        if (!adTagUri.equals(loadedAdTagUri)) {
          releaseAdsLoader();
          loadedAdTagUri = adTagUri;
        }
        MediaSource adsMediaSource = createAdsMediaSource(mediaSource, adTagUri);
        if (adsMediaSource != null) {
          mediaSource = adsMediaSource;
        } else {
          showToast(R.string.ima_not_loaded);
        }
      }
    } else {
      releaseAdsLoader();
    }

    return mediaSource;
  }
```

{% hint style="info" %}
Please note line number 55-60 is where MediaMelon code is added
{% endhint %}

### Step 4: Report User Intent to Playback <a href="#step-4-report-user-intent-to-playback" id="step-4-report-user-intent-to-playback"></a>

When the user presses the play button for the first time to start the playback, or in autoplay mode when a player is fed with a content URL to load the session, `reportUserInitiatedPlayback()` should be called. In the demo application, autoplay is “on”, so let's call this API just before `player.prepare()`

In `$EXOPROJECT/demos/main/src/main/java/com/google/android/exoplayer2/demo/PlayerActivity.java`

```java
// Internal methods

  private void initializePlayer() {
    if (player == null) {
      Intent intent = getIntent();
      // <MMSmartStreaming 4> Integration start Comment below lines 
      //mediaSource = createTopLevelMediaSource(intent);
      //if (mediaSource == null) {
      //  return;
      //}
      // </MMSmartStreaming 4> Integration end
      
      TrackSelection.Factory trackSelectionFactory;
      String abrAlgorithm = intent.getStringExtra(ABR_ALGORITHM_EXTRA);
      if (abrAlgorithm == null || ABR_ALGORITHM_DEFAULT.equals(abrAlgorithm)) {
        trackSelectionFactory = new AdaptiveTrackSelection.Factory();
      } else if (ABR_ALGORITHM_RANDOM.equals(abrAlgorithm)) {
        trackSelectionFactory = new RandomTrackSelection.Factory();
      } else {
        showToast(R.string.error_unrecognized_abr_algorithm);
        finish();
        return;
      }

      boolean preferExtensionDecoders =
          intent.getBooleanExtra(PREFER_EXTENSION_DECODERS_EXTRA, false);
      RenderersFactory renderersFactory =
          ((DemoApplication) getApplication()).buildRenderersFactory(preferExtensionDecoders);

      trackSelector = new DefaultTrackSelector(/* context= */ this, trackSelectionFactory);
      trackSelector.setParameters(trackSelectorParameters);
      lastSeenTrackGroupArray = null;

      player =
          new SimpleExoPlayer.Builder(/* context= */ this, renderersFactory)
              .setTrackSelector(trackSelector)
              .build();
      player.addListener(new PlayerEventListener());
      player.setAudioAttributes(AudioAttributes.DEFAULT, /* handleAudioFocus= */ true);
      player.setPlayWhenReady(startAutoPlay);
      player.addAnalyticsListener(new EventLogger(trackSelector));
      playerView.setPlayer(player);
      playerView.setPlaybackPreparer(this);
      debugViewHelper = new DebugTextViewHelper(player, debugTextView);
      debugViewHelper.start();
      if (adsLoader != null) {
        adsLoader.setPlayer(player);
      }
      // <MMSmartStreaming 4> Integration start Add below lines
      mediaSource = createTopLevelMediaSource(intent);
      if (mediaSource == null) {
        return;
      }
      // </MMSmartStreaming 4> Integration end
    }
    boolean haveStartPosition = startWindow != C.INDEX_UNSET;
    if (haveStartPosition) {
      player.seekTo(startWindow, startPosition);
    }
    // <MMSmartStreaming 4> Integration Start (User playback Loaded)
    MMSmartStreamingExo2.getInstance().reportUserInitiatedPlayback();
    // </MMSmartStreaming 4> Integration end
    player.prepare(mediaSource, !haveStartPosition, false);
    updateButtonVisibility();
  }
```

### Step 5: Report ended state when the player instance is released <a href="#step-5-report-ended-state-when-the-player-instance-is-released" id="step-5-report-ended-state-when-the-player-instance-is-released"></a>

In `$EXOPROJECT/demos/main/src/main/java/com/google/android/exoplayer2/demo/PlayerActivity.java`

```java
private void releasePlayer() {
    if (player != null) {
      updateTrackSelectorParameters();
      updateStartPosition();
      debugViewHelper.stop();
      debugViewHelper = null;
      player.release();
      player = null;
      mediaSource = null;
      trackSelector = null;
       // <MMSmartStreaming 5> Start
	  MMSmartStreamingExo2.getInstance().reportPlayerState(false, Player.STATE_ENDED);
	  // </MMSmartStreaming 5> End
    }
    if (adsLoader != null) {
      adsLoader.setPlayer(null);
    }
  }
```