1 files changed, 202 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessage.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessage.java
new file mode 100644
index 0000000000..01aac27a27
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessage.java
@@ -0,0 +1,202 @@
+/*
+ * 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.metadata.emsg;
+
+import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+import androidx.annotation.Nullable;
+import androidx.annotation.VisibleForTesting;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.Format;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util;
+import java.util.Arrays;
+
+/** An Event Message (emsg) as defined in ISO 23009-1. */
+public final class EventMessage implements Metadata.Entry {
+
+  /**
+   * emsg scheme_id_uri from the <a href="https://aomediacodec.github.io/av1-id3/#semantics">CMAF
+   * spec</a>.
+   */
+  @VisibleForTesting public static final String ID3_SCHEME_ID_AOM = "https://aomedia.org/emsg/ID3";
+
+  /**
+   * The Apple-hosted scheme_id equivalent to {@code ID3_SCHEME_ID_AOM} - used before AOM adoption.
+   */
+  private static final String ID3_SCHEME_ID_APPLE =
+      "https://developer.apple.com/streaming/emsg-id3";
+
+  /**
+   * scheme_id_uri from section 7.3.2 of <a
+   * href="https://www.scte.org/SCTEDocs/Standards/ANSI_SCTE%20214-3%202015.pdf">SCTE 214-3
+   * 2015</a>.
+   */
+  @VisibleForTesting public static final String SCTE35_SCHEME_ID = "urn:scte:scte35:2014:bin";
+
+  private static final Format ID3_FORMAT =
+      Format.createSampleFormat(
+          /* id= */ null, MimeTypes.APPLICATION_ID3, Format.OFFSET_SAMPLE_RELATIVE);
+  private static final Format SCTE35_FORMAT =
+      Format.createSampleFormat(
+          /* id= */ null, MimeTypes.APPLICATION_SCTE35, Format.OFFSET_SAMPLE_RELATIVE);
+
+  /** The message scheme. */
+  public final String schemeIdUri;
+
+  /**
+   * The value for the event.
+   */
+  public final String value;
+
+  /**
+   * The duration of the event in milliseconds.
+   */
+  public final long durationMs;
+
+  /**
+   * The instance identifier.
+   */
+  public final long id;
+
+  /**
+   * The body of the message.
+   */
+  public final byte[] messageData;
+
+  // Lazily initialized hashcode.
+  private int hashCode;
+
+  /**
+   * @param schemeIdUri The message scheme.
+   * @param value The value for the event.
+   * @param durationMs The duration of the event in milliseconds.
+   * @param id The instance identifier.
+   * @param messageData The body of the message.
+   */
+  public EventMessage(
+      String schemeIdUri, String value, long durationMs, long id, byte[] messageData) {
+    this.schemeIdUri = schemeIdUri;
+    this.value = value;
+    this.durationMs = durationMs;
+    this.id = id;
+    this.messageData = messageData;
+  }
+
+  /* package */ EventMessage(Parcel in) {
+    schemeIdUri = castNonNull(in.readString());
+    value = castNonNull(in.readString());
+    durationMs = in.readLong();
+    id = in.readLong();
+    messageData = castNonNull(in.createByteArray());
+  }
+
+  @Override
+  @Nullable
+  public Format getWrappedMetadataFormat() {
+    switch (schemeIdUri) {
+      case ID3_SCHEME_ID_AOM:
+      case ID3_SCHEME_ID_APPLE:
+        return ID3_FORMAT;
+      case SCTE35_SCHEME_ID:
+        return SCTE35_FORMAT;
+      default:
+        return null;
+    }
+  }
+
+  @Override
+  @Nullable
+  public byte[] getWrappedMetadataBytes() {
+    return getWrappedMetadataFormat() != null ? messageData : null;
+  }
+
+  @Override
+  public int hashCode() {
+    if (hashCode == 0) {
+      int result = 17;
+      result = 31 * result + (schemeIdUri != null ? schemeIdUri.hashCode() : 0);
+      result = 31 * result + (value != null ? value.hashCode() : 0);
+      result = 31 * result + (int) (durationMs ^ (durationMs >>> 32));
+      result = 31 * result + (int) (id ^ (id >>> 32));
+      result = 31 * result + Arrays.hashCode(messageData);
+      hashCode = result;
+    }
+    return hashCode;
+  }
+
+  @Override
+  public boolean equals(@Nullable Object obj) {
+    if (this == obj) {
+      return true;
+    }
+    if (obj == null || getClass() != obj.getClass()) {
+      return false;
+    }
+    EventMessage other = (EventMessage) obj;
+    return durationMs == other.durationMs
+        && id == other.id
+        && Util.areEqual(schemeIdUri, other.schemeIdUri)
+        && Util.areEqual(value, other.value)
+        && Arrays.equals(messageData, other.messageData);
+  }
+
+  @Override
+  public String toString() {
+    return "EMSG: scheme="
+        + schemeIdUri
+        + ", id="
+        + id
+        + ", durationMs="
+        + durationMs
+        + ", value="
+        + value;
+  }
+
+  // Parcelable implementation.
+
+  @Override
+  public int describeContents() {
+    return 0;
+  }
+
+  @Override
+  public void writeToParcel(Parcel dest, int flags) {
+    dest.writeString(schemeIdUri);
+    dest.writeString(value);
+    dest.writeLong(durationMs);
+    dest.writeLong(id);
+    dest.writeByteArray(messageData);
+  }
+
+  public static final Parcelable.Creator<EventMessage> CREATOR =
+      new Parcelable.Creator<EventMessage>() {
+
+    @Override
+    public EventMessage createFromParcel(Parcel in) {
+      return new EventMessage(in);
+    }
+
+    @Override
+    public EventMessage[] newArray(int size) {
+      return new EventMessage[size];
+    }
+
+  };
+
+}