feat(YouTube): Add Shorts autoplay patch (#719)

app/src/main/java/app/revanced/integrations/youtube/patches/ShortsAutoplayPatch.java

@@ -0,0 +1,119 @@
+package app.revanced.integrations.youtube.patches;
+
+import android.app.Activity;
+import android.os.Build;
+
+import androidx.annotation.RequiresApi;
+
+import java.lang.ref.WeakReference;
+import java.util.Objects;
+
+import app.revanced.integrations.shared.Logger;
+import app.revanced.integrations.youtube.settings.Settings;
+
+@SuppressWarnings("unused")
+public class ShortsAutoplayPatch {
+
+    private enum ShortsLoopBehavior {
+        UNKNOWN,
+        /**
+         * Repeat the same Short forever!
+         */
+        REPEAT,
+        /**
+         * Play once, then advanced to the next Short.
+         */
+        SINGLE_PLAY,
+        /**
+         * Pause playback after 1 play.
+         */
+        END_SCREEN;
+
+        static void setYTEnumValue(Enum<?> ytBehavior) {
+            for (ShortsLoopBehavior rvBehavior : values()) {
+                if (ytBehavior.name().endsWith(rvBehavior.name())) {
+                    rvBehavior.ytEnumValue = ytBehavior;
+
+                    Logger.printDebug(() -> rvBehavior + " set to YT enum: " + ytBehavior.name());
+                    return;
+                }
+            }
+
+            Logger.printException(() -> "Unknown Shorts loop behavior: " + ytBehavior.name());
+        }
+
+        /**
+         * YouTube enum value of the obfuscated enum type.
+         */
+        private Enum<?> ytEnumValue;
+    }
+
+    private static WeakReference<Activity> mainActivityRef = new WeakReference<>(null);
+
+
+    public static void setMainActivity(Activity activity) {
+        mainActivityRef = new WeakReference<>(activity);
+    }
+
+    /**
+     * @return If the app is currently in background PiP mode.
+     */
+    @RequiresApi(api = Build.VERSION_CODES.N)
+    private static boolean isAppInBackgroundPiPMode() {
+        Activity activity = mainActivityRef.get();
+        return activity != null && activity.isInPictureInPictureMode();
+    }
+
+    /**
+     * Injection point.
+     */
+    public static void setYTShortsRepeatEnum(Enum<?> ytEnum) {
+        try {
+            for (Enum<?> ytBehavior : Objects.requireNonNull(ytEnum.getClass().getEnumConstants())) {
+                ShortsLoopBehavior.setYTEnumValue(ytBehavior);
+            }
+        } catch (Exception ex) {
+            Logger.printException(() -> "setYTShortsRepeatEnum failure", ex);
+        }
+    }
+
+    /**
+     * Injection point.
+     */
+    @RequiresApi(api = Build.VERSION_CODES.N)
+    public static Enum<?> changeShortsRepeatBehavior(Enum<?> original) {
+        try {
+            final boolean autoplay;
+
+            if (isAppInBackgroundPiPMode()) {
+                if (!VersionCheckPatch.IS_19_34_OR_GREATER) {
+                    // 19.34+ is required to set background play behavior.
+                    Logger.printDebug(() -> "PiP Shorts not supported, using original repeat behavior");
+
+                    return original;
+                }
+
+                autoplay = Settings.SHORTS_AUTOPLAY_BACKGROUND.get();
+            } else {
+                autoplay = Settings.SHORTS_AUTOPLAY.get();
+            }
+
+            final ShortsLoopBehavior behavior = autoplay
+                    ? ShortsLoopBehavior.SINGLE_PLAY
+                    : ShortsLoopBehavior.REPEAT;
+
+            if (behavior.ytEnumValue != null) {
+                Logger.printDebug(() -> behavior.ytEnumValue == original
+                        ? "Changing Shorts repeat behavior from: " + original.name() + " to: " + behavior.ytEnumValue
+                        : "Behavior setting is same as original. Using original: " + original.name()
+                );
+
+                return behavior.ytEnumValue;
+            }
+        } catch (Exception ex) {
+            Logger.printException(() -> "changeShortsRepeatState failure", ex);
+        }
+
+        return original;
+    }
+}

app/src/main/java/app/revanced/integrations/youtube/patches/VersionCheckPatch.java

@@ -7,4 +7,5 @@ public class VersionCheckPatch {
     public static final boolean IS_19_21_OR_GREATER = Utils.getAppVersionName().compareTo("19.21.00") >= 0;
     public static final boolean IS_19_26_OR_GREATER = Utils.getAppVersionName().compareTo("19.26.00") >= 0;
     public static final boolean IS_19_29_OR_GREATER = Utils.getAppVersionName().compareTo("19.29.00") >= 0;
+    public static final boolean IS_19_34_OR_GREATER = Utils.getAppVersionName().compareTo("19.34.00") >= 0;
 }

app/src/main/java/app/revanced/integrations/youtube/patches/theme/SeekbarColorPatch.java

@@ -73,10 +73,7 @@ public static int getSeekbarColor() {
     }
 
     public static boolean playerSeekbarGradientEnabled(boolean original) {
-        if (original) {
-            Logger.printDebug(() -> "playerSeekbarGradientEnabled original: " + true);
-            if (SEEKBAR_CUSTOM_COLOR_ENABLED) return false;
-        }
+        if (SEEKBAR_CUSTOM_COLOR_ENABLED) return false;
 
         return original;
     }

app/src/main/java/app/revanced/integrations/youtube/settings/Settings.java

@@ -247,6 +247,8 @@ public class Settings extends BaseSettings {
     public static final BooleanSetting HIDE_SHORTS_SOUND_METADATA_LABEL = new BooleanSetting("revanced_hide_shorts_sound_metadata_label", FALSE);
     public static final BooleanSetting HIDE_SHORTS_FULL_VIDEO_LINK_LABEL = new BooleanSetting("revanced_hide_shorts_full_video_link_label", FALSE);
     public static final BooleanSetting HIDE_SHORTS_NAVIGATION_BAR = new BooleanSetting("revanced_hide_shorts_navigation_bar", FALSE, true);
+    public static final BooleanSetting SHORTS_AUTOPLAY = new BooleanSetting("revanced_shorts_autoplay", FALSE);
+    public static final BooleanSetting SHORTS_AUTOPLAY_BACKGROUND = new BooleanSetting("revanced_shorts_autoplay_background", TRUE);
 
     // Seekbar
     public static final BooleanSetting DISABLE_PRECISE_SEEKING_GESTURE = new BooleanSetting("revanced_disable_precise_seeking_gesture", TRUE);

app/src/main/java/app/revanced/integrations/youtube/sponsorblock/SegmentPlaybackController.java

@@ -662,10 +662,7 @@ private static void setSponsorBarAbsoluteRight(Rect rect) {
      */
     @SuppressWarnings("unused")
     public static void setSponsorBarThickness(int thickness) {
-        if (sponsorBarThickness != thickness) {
-            Logger.printDebug(() -> "setSponsorBarThickness: " + thickness);
-            sponsorBarThickness = thickness;
-        }
+        sponsorBarThickness = thickness;
     }
 
     /**