1 files changed, 94 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataDecoderFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataDecoderFactory.java
new file mode 100644
index 0000000000..30f6aad4a9
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataDecoderFactory.java
@@ -0,0 +1,94 @@
+/*
+ * 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;
+
+import androidx.annotation.Nullable;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.Format;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.emsg.EventMessageDecoder;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.icy.IcyDecoder;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.scte35.SpliceInfoDecoder;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes;
+
+/**
+ * A factory for {@link MetadataDecoder} instances.
+ */
+public interface MetadataDecoderFactory {
+
+  /**
+   * Returns whether the factory is able to instantiate a {@link MetadataDecoder} for the given
+   * {@link Format}.
+   *
+   * @param format The {@link Format}.
+   * @return Whether the factory can instantiate a suitable {@link MetadataDecoder}.
+   */
+  boolean supportsFormat(Format format);
+
+  /**
+   * Creates a {@link MetadataDecoder} for the given {@link Format}.
+   *
+   * @param format The {@link Format}.
+   * @return A new {@link MetadataDecoder}.
+   * @throws IllegalArgumentException If the {@link Format} is not supported.
+   */
+  MetadataDecoder createDecoder(Format format);
+
+  /**
+   * Default {@link MetadataDecoder} implementation.
+   *
+   * <p>The formats supported by this factory are:
+   *
+   * <ul>
+   *   <li>ID3 ({@link Id3Decoder})
+   *   <li>EMSG ({@link EventMessageDecoder})
+   *   <li>SCTE-35 ({@link SpliceInfoDecoder})
+   *   <li>ICY ({@link IcyDecoder})
+   * </ul>
+   */
+  MetadataDecoderFactory DEFAULT =
+      new MetadataDecoderFactory() {
+
+        @Override
+        public boolean supportsFormat(Format format) {
+          @Nullable String mimeType = format.sampleMimeType;
+          return MimeTypes.APPLICATION_ID3.equals(mimeType)
+              || MimeTypes.APPLICATION_EMSG.equals(mimeType)
+              || MimeTypes.APPLICATION_SCTE35.equals(mimeType)
+              || MimeTypes.APPLICATION_ICY.equals(mimeType);
+        }
+
+        @Override
+        public MetadataDecoder createDecoder(Format format) {
+          @Nullable String mimeType = format.sampleMimeType;
+          if (mimeType != null) {
+            switch (mimeType) {
+              case MimeTypes.APPLICATION_ID3:
+                return new Id3Decoder();
+              case MimeTypes.APPLICATION_EMSG:
+                return new EventMessageDecoder();
+              case MimeTypes.APPLICATION_SCTE35:
+                return new SpliceInfoDecoder();
+              case MimeTypes.APPLICATION_ICY:
+                return new IcyDecoder();
+              default:
+                break;
+            }
+          }
+          throw new IllegalArgumentException(
+              "Attempted to create decoder for unsupported MIME type: " + mimeType);
+        }
+      };
+}