Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 173 insertions, 0 deletions

diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/DefaultContentMetadata.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/DefaultContentMetadata.java
new file mode 100644
index 0000000000..2602f834e7
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/DefaultContentMetadata.java
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2018 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.Nullable;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
+import java.nio.ByteBuffer;
+import java.nio.charset.Charset;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+
+/** Default implementation of {@link ContentMetadata}. Values are stored as byte arrays. */
+public final class DefaultContentMetadata implements ContentMetadata {
+
+  /** An empty DefaultContentMetadata. */
+  public static final DefaultContentMetadata EMPTY =
+      new DefaultContentMetadata(Collections.emptyMap());
+
+  private int hashCode;
+
+  private final Map<String, byte[]> metadata;
+
+  public DefaultContentMetadata() {
+    this(Collections.emptyMap());
+  }
+
+  /** @param metadata The metadata entries in their raw byte array form. */
+  public DefaultContentMetadata(Map<String, byte[]> metadata) {
+    this.metadata = Collections.unmodifiableMap(metadata);
+  }
+
+  /**
+   * Returns a copy {@link DefaultContentMetadata} with {@code mutations} applied. If {@code
+   * mutations} don't change anything, returns this instance.
+   */
+  public DefaultContentMetadata copyWithMutationsApplied(ContentMetadataMutations mutations) {
+    Map<String, byte[]> mutatedMetadata = applyMutations(metadata, mutations);
+    if (isMetadataEqual(metadata, mutatedMetadata)) {
+      return this;
+    }
+    return new DefaultContentMetadata(mutatedMetadata);
+  }
+
+  /** Returns the set of metadata entries in their raw byte array form. */
+  public Set<Entry<String, byte[]>> entrySet() {
+    return metadata.entrySet();
+  }
+
+  @Override
+  @Nullable
+  public final byte[] get(String name, @Nullable byte[] defaultValue) {
+    if (metadata.containsKey(name)) {
+      byte[] bytes = metadata.get(name);
+      return Arrays.copyOf(bytes, bytes.length);
+    } else {
+      return defaultValue;
+    }
+  }
+
+  @Override
+  @Nullable
+  public final String get(String name, @Nullable String defaultValue) {
+    if (metadata.containsKey(name)) {
+      byte[] bytes = metadata.get(name);
+      return new String(bytes, Charset.forName(C.UTF8_NAME));
+    } else {
+      return defaultValue;
+    }
+  }
+
+  @Override
+  public final long get(String name, long defaultValue) {
+    if (metadata.containsKey(name)) {
+      byte[] bytes = metadata.get(name);
+      return ByteBuffer.wrap(bytes).getLong();
+    } else {
+      return defaultValue;
+    }
+  }
+
+  @Override
+  public final boolean contains(String name) {
+    return metadata.containsKey(name);
+  }
+
+  @Override
+  public boolean equals(@Nullable Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    return isMetadataEqual(metadata, ((DefaultContentMetadata) o).metadata);
+  }
+
+  @Override
+  public int hashCode() {
+    if (hashCode == 0) {
+      int result = 0;
+      for (Entry<String, byte[]> entry : metadata.entrySet()) {
+        result += entry.getKey().hashCode() ^ Arrays.hashCode(entry.getValue());
+      }
+      hashCode = result;
+    }
+    return hashCode;
+  }
+
+  private static boolean isMetadataEqual(Map<String, byte[]> first, Map<String, byte[]> second) {
+    if (first.size() != second.size()) {
+      return false;
+    }
+    for (Entry<String, byte[]> entry : first.entrySet()) {
+      byte[] value = entry.getValue();
+      byte[] otherValue = second.get(entry.getKey());
+      if (!Arrays.equals(value, otherValue)) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private static Map<String, byte[]> applyMutations(
+      Map<String, byte[]> otherMetadata, ContentMetadataMutations mutations) {
+    HashMap<String, byte[]> metadata = new HashMap<>(otherMetadata);
+    removeValues(metadata, mutations.getRemovedValues());
+    addValues(metadata, mutations.getEditedValues());
+    return metadata;
+  }
+
+  private static void removeValues(HashMap<String, byte[]> metadata, List<String> names) {
+    for (int i = 0; i < names.size(); i++) {
+      metadata.remove(names.get(i));
+    }
+  }
+
+  private static void addValues(HashMap<String, byte[]> metadata, Map<String, Object> values) {
+    for (String name : values.keySet()) {
+      metadata.put(name, getBytes(values.get(name)));
+    }
+  }
+
+  private static byte[] getBytes(Object value) {
+    if (value instanceof Long) {
+      return ByteBuffer.allocate(8).putLong((Long) value).array();
+    } else if (value instanceof String) {
+      return ((String) value).getBytes(Charset.forName(C.UTF8_NAME));
+    } else if (value instanceof byte[]) {
+      return (byte[]) value;
+    } else {
+      throw new IllegalArgumentException();
+    }
+  }
+
+}