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/*
* 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;
}
}
}
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