1 files changed, 95 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/RepeatModeUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/RepeatModeUtil.java
new file mode 100644
index 0000000000..c4964e6848
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/RepeatModeUtil.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.mozilla.thirdparty.com.google.android.exoplayer2.util;
+
+import androidx.annotation.IntDef;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.Player;
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * Util class for repeat mode handling.
+ */
+public final class RepeatModeUtil {
+
+  // LINT.IfChange
+  /**
+   * Set of repeat toggle modes. Can be combined using bit-wise operations. Possible flag values are
+   * {@link #REPEAT_TOGGLE_MODE_NONE}, {@link #REPEAT_TOGGLE_MODE_ONE} and {@link
+   * #REPEAT_TOGGLE_MODE_ALL}.
+   */
+  @Documented
+  @Retention(RetentionPolicy.SOURCE)
+  @IntDef(
+      flag = true,
+      value = {REPEAT_TOGGLE_MODE_NONE, REPEAT_TOGGLE_MODE_ONE, REPEAT_TOGGLE_MODE_ALL})
+  public @interface RepeatToggleModes {}
+  /**
+   * All repeat mode buttons disabled.
+   */
+  public static final int REPEAT_TOGGLE_MODE_NONE = 0;
+  /**
+   * "Repeat One" button enabled.
+   */
+  public static final int REPEAT_TOGGLE_MODE_ONE = 1;
+  /** "Repeat All" button enabled. */
+  public static final int REPEAT_TOGGLE_MODE_ALL = 1 << 1; // 2
+  // LINT.ThenChange(../../../../../../../../../ui/src/main/res/values/attrs.xml)
+
+  private RepeatModeUtil() {
+    // Prevent instantiation.
+  }
+
+  /**
+   * Gets the next repeat mode out of {@code enabledModes} starting from {@code currentMode}.
+   *
+   * @param currentMode The current repeat mode.
+   * @param enabledModes Bitmask of enabled modes.
+   * @return The next repeat mode.
+   */
+  public static @Player.RepeatMode int getNextRepeatMode(@Player.RepeatMode int currentMode,
+      int enabledModes) {
+    for (int offset = 1; offset <= 2; offset++) {
+      @Player.RepeatMode int proposedMode = (currentMode + offset) % 3;
+      if (isRepeatModeEnabled(proposedMode, enabledModes)) {
+        return proposedMode;
+      }
+    }
+    return currentMode;
+  }
+
+  /**
+   * Verifies whether a given {@code repeatMode} is enabled in the bitmask {@code enabledModes}.
+   *
+   * @param repeatMode The mode to check.
+   * @param enabledModes The bitmask representing the enabled modes.
+   * @return {@code true} if enabled.
+   */
+  public static boolean isRepeatModeEnabled(@Player.RepeatMode int repeatMode, int enabledModes) {
+    switch (repeatMode) {
+      case Player.REPEAT_MODE_OFF:
+        return true;
+      case Player.REPEAT_MODE_ONE:
+        return (enabledModes & REPEAT_TOGGLE_MODE_ONE) != 0;
+      case Player.REPEAT_MODE_ALL:
+        return (enabledModes & REPEAT_TOGGLE_MODE_ALL) != 0;
+      default:
+        return false;
+    }
+  }
+
+}