Implement ExoPlayer

 - Add ExoPlayer logic to MultiImageView.java
 - Add option to enable/disable ExoPlayer in MediaSettings (defaults to
 enabled).

Clover/app/build.gradle

@@ -139,6 +139,9 @@ dependencies {
     implementation "com.android.support:customtabs:${supportVersion}"
     implementation 'com.android.support.constraint:constraint-layout:1.1.2'
 
+    implementation 'com.google.android.exoplayer:exoplayer-core:2.9.0'
+    implementation 'com.google.android.exoplayer:exoplayer-ui:2.9.0'
+
     implementation 'com.squareup.okhttp3:okhttp:3.10.0'
     //noinspection GradleDependency
     implementation 'com.j256.ormlite:ormlite-core:4.48'

Clover/app/src/main/java/org/floens/chan/core/settings/ChanSettings.java

@@ -100,6 +100,7 @@ public String getKey() {
     public static final OptionsSetting<MediaAutoLoadMode> imageAutoLoadNetwork;
     public static final OptionsSetting<MediaAutoLoadMode> videoAutoLoadNetwork;
     public static final BooleanSetting videoOpenExternal;
+    public static final BooleanSetting videoUseExoplayer;
     public static final BooleanSetting textOnly;
     public static final BooleanSetting videoErrorIgnore;
     public static final OptionsSetting<PostViewMode> boardViewMode;
@@ -174,6 +175,7 @@ public String getKey() {
         imageAutoLoadNetwork = new OptionsSetting<>(p, "preference_image_auto_load_network", MediaAutoLoadMode.class, MediaAutoLoadMode.WIFI);
         videoAutoLoadNetwork = new OptionsSetting<>(p, "preference_video_auto_load_network", MediaAutoLoadMode.class, MediaAutoLoadMode.WIFI);
         videoOpenExternal = new BooleanSetting(p, "preference_video_external", false);
+        videoUseExoplayer = new BooleanSetting(p, "preference_video_exoplayer", true);
         textOnly = new BooleanSetting(p, "preference_text_only", false);
         videoErrorIgnore = new BooleanSetting(p, "preference_video_error_ignore", false);
         boardViewMode = new OptionsSetting<>(p, "preference_board_view_mode", PostViewMode.class, PostViewMode.LIST);

Clover/app/src/main/java/org/floens/chan/ui/controller/MediaSettingsController.java

@@ -109,6 +109,10 @@ private void populatePreferences() {
                     R.string.setting_video_open_external,
                     R.string.setting_video_open_external_description));
 
+            media.add(new BooleanSettingView(this, ChanSettings.videoUseExoplayer,
+                    R.string.setting_video_exoplayer,
+                    R.string.setting_video_exoplayer_description));
+
             media.add(new BooleanSettingView(this,
                     ChanSettings.shareUrl,
                     R.string.setting_share_url, R.string.setting_share_url_description));

Clover/app/src/main/java/org/floens/chan/ui/view/MultiImageView.java

@@ -36,6 +36,16 @@
 import com.android.volley.toolbox.ImageLoader;
 import com.android.volley.toolbox.ImageLoader.ImageContainer;
 import com.davemorrissey.labs.subscaleview.ImageSource;
+import com.google.android.exoplayer2.ExoPlayer;
+import com.google.android.exoplayer2.ExoPlayerFactory;
+import com.google.android.exoplayer2.Player;
+import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.source.ExtractorMediaSource;
+import com.google.android.exoplayer2.source.MediaSource;
+import com.google.android.exoplayer2.ui.PlayerView;
+import com.google.android.exoplayer2.upstream.DataSource;
+import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
+import com.google.android.exoplayer2.util.Util;
 
 import org.floens.chan.R;
 import org.floens.chan.core.cache.FileCache;
@@ -74,7 +84,6 @@ public enum Mode {
 
     private PostImage postImage;
     private Callback callback;
-
     private Mode mode = Mode.UNLOADED;
 
     private boolean hasContent = false;
@@ -84,8 +93,10 @@ public enum Mode {
     private FileCacheDownloader videoRequest;
 
     private VideoView videoView;
+    private PlayerView exoVideoView;
     private boolean videoError = false;
     private MediaPlayer mediaPlayer;
+    private SimpleExoPlayer exoPlayer;
 
     public MultiImageView(Context context) {
         this(context, null);
@@ -166,9 +177,15 @@ public CustomScaleImageView findScaleImageView() {
     }
 
     public void setVolume(boolean muted) {
-        if (mediaPlayer != null) {
-            final float volume = muted ? 0f : 1f;
-            mediaPlayer.setVolume(volume, volume);
+        final float volume = muted ? 0f : 1f;
+        if(ChanSettings.videoUseExoplayer.get()){
+            if(exoPlayer != null) {
+                exoPlayer.getAudioComponent().setVolume(volume);
+            }
+        } else {
+            if (mediaPlayer != null) {
+                mediaPlayer.setVolume(volume, volume);
+            }
         }
     }
 
@@ -391,6 +408,21 @@ private void setVideoFile(final File file) {
             AndroidUtils.openIntent(intent);
 
             onModeLoaded(Mode.MOVIE, videoView);
+        } else if (ChanSettings.videoUseExoplayer.get()) {
+            exoVideoView = new PlayerView(getContext());
+            exoPlayer = ExoPlayerFactory.newSimpleInstance(getContext());
+            exoVideoView.setPlayer(exoPlayer);
+            DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(getContext(),
+                    Util.getUserAgent(getContext(),"Clover"));
+            MediaSource videoSource = new ExtractorMediaSource.Factory(dataSourceFactory)
+                    .createMediaSource(android.net.Uri.fromFile(file));
+
+            exoPlayer.setRepeatMode(Player.REPEAT_MODE_ALL); //Repeat forever
+
+            exoPlayer.prepare(videoSource);
+            callback.onVideoLoaded(this,hasMediaPlayerAudioTracks(exoPlayer));
+            addView(exoVideoView);
+            exoPlayer.setPlayWhenReady(true);
         } else {
             Context proxyContext = new NoMusicServiceCommandContext(getContext());
 
@@ -451,6 +483,14 @@ private boolean hasMediaPlayerAudioTracks(MediaPlayer mediaPlayer) {
         }
     }
 
+    private boolean hasMediaPlayerAudioTracks(ExoPlayer mediaPlayer) {
+        if(mediaPlayer.getAudioComponent() == null) {
+            return false;
+        } else {
+            return true;
+        }
+    }
+
     private void onVideoError() {
         if (!videoError) {
             videoError = true;
@@ -463,6 +503,10 @@ private void cleanupVideo(VideoView videoView) {
         mediaPlayer = null;
     }
 
+    private void cleanupVideo(PlayerView videoView) {
+        videoView.getPlayer().release();
+    }
+
     private void setBitImageFileInternal(File file, boolean tiling, final Mode forMode) {
         final CustomScaleImageView image = new CustomScaleImageView(getContext());
         image.setImage(ImageSource.uri(file.getAbsolutePath()).tiling(tiling));
@@ -535,6 +579,8 @@ private void onModeLoaded(Mode mode, View view) {
                     if (child != view) {
                         if (child instanceof VideoView) {
                             cleanupVideo((VideoView) child);
+                        } else if (child instanceof PlayerView) {
+                            cleanupVideo((PlayerView) child);
                         }
 
                         removeViewAt(i);

Clover/app/src/main/res/values/strings.xml

@@ -508,6 +508,8 @@ If disabled, save the image with the filename the uploader assigned."
     <string name="setting_video_default_muted_description">If a video has audio, mute it by default.</string>
     <string name="setting_video_open_external">Play videos with external player</string>
     <string name="setting_video_open_external_description">Play videos in an external media player app</string>
+    <string name="setting_video_exoplayer">Enable new ExoPlayer</string>
+    <string name="setting_video_exoplayer_description">Use the new ExoPlayer for internal media player</string>
     <string name="setting_share_url">Share URL to image</string>
     <string name="setting_share_url_description">Share the URL to the image instead of the image itself</string>
     <string name="settings_reveal_image_spoilers">Reveal image spoilers</string>