diff options
Diffstat (limited to 'mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheSpan.java')
-rw-r--r-- | mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheSpan.java | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheSpan.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheSpan.java new file mode 100644 index 0000000000..f57544f12b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheSpan.java @@ -0,0 +1,106 @@ +/* + * Copyright (C) 2016 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.upstream.cache; + +import androidx.annotation.NonNull; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.io.File; + +/** + * Defines a span of data that may or may not be cached (as indicated by {@link #isCached}). + */ +public class CacheSpan implements Comparable<CacheSpan> { + + /** + * The cache key that uniquely identifies the original stream. + */ + public final String key; + /** + * The position of the {@link CacheSpan} in the original stream. + */ + public final long position; + /** + * The length of the {@link CacheSpan}, or {@link C#LENGTH_UNSET} if this is an open-ended hole. + */ + public final long length; + /** + * Whether the {@link CacheSpan} is cached. + */ + public final boolean isCached; + /** The file corresponding to this {@link CacheSpan}, or null if {@link #isCached} is false. */ + @Nullable public final File file; + /** The last touch timestamp, or {@link C#TIME_UNSET} if {@link #isCached} is false. */ + public final long lastTouchTimestamp; + + /** + * Creates a hole CacheSpan which isn't cached, has no last touch timestamp and no file + * associated. + * + * @param key The cache key that uniquely identifies the original stream. + * @param position The position of the {@link CacheSpan} in the original stream. + * @param length The length of the {@link CacheSpan}, or {@link C#LENGTH_UNSET} if this is an + * open-ended hole. + */ + public CacheSpan(String key, long position, long length) { + this(key, position, length, C.TIME_UNSET, null); + } + + /** + * Creates a CacheSpan. + * + * @param key The cache key that uniquely identifies the original stream. + * @param position The position of the {@link CacheSpan} in the original stream. + * @param length The length of the {@link CacheSpan}, or {@link C#LENGTH_UNSET} if this is an + * open-ended hole. + * @param lastTouchTimestamp The last touch timestamp, or {@link C#TIME_UNSET} if {@link + * #isCached} is false. + * @param file The file corresponding to this {@link CacheSpan}, or null if it's a hole. + */ + public CacheSpan( + String key, long position, long length, long lastTouchTimestamp, @Nullable File file) { + this.key = key; + this.position = position; + this.length = length; + this.isCached = file != null; + this.file = file; + this.lastTouchTimestamp = lastTouchTimestamp; + } + + /** + * Returns whether this is an open-ended {@link CacheSpan}. + */ + public boolean isOpenEnded() { + return length == C.LENGTH_UNSET; + } + + /** + * Returns whether this is a hole {@link CacheSpan}. + */ + public boolean isHoleSpan() { + return !isCached; + } + + @Override + public int compareTo(@NonNull CacheSpan another) { + if (!key.equals(another.key)) { + return key.compareTo(another.key); + } + long startOffsetDiff = position - another.position; + return startOffsetDiff == 0 ? 0 : ((startOffsetDiff < 0) ? -1 : 1); + } + +} |