Make ExtractorHolder a top-level class

PiperOrigin-RevId: 296405881

library/core/src/main/java/com/google/android/exoplayer2/source/ExtractorHolder.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2020 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 com.google.android.exoplayer2.source;
+
+import android.net.Uri;
+import androidx.annotation.Nullable;
+import com.google.android.exoplayer2.extractor.Extractor;
+import com.google.android.exoplayer2.extractor.ExtractorInput;
+import com.google.android.exoplayer2.extractor.ExtractorOutput;
+import com.google.android.exoplayer2.util.Util;
+import java.io.EOFException;
+import java.io.IOException;
+
+/** Stores a list of extractors and a selected extractor when the format has been detected. */
+/* package */ final class ExtractorHolder {
+
+  private final Extractor[] extractors;
+
+  @Nullable private Extractor extractor;
+
+  /**
+   * Creates a holder that will select an extractor and initialize it using the specified output.
+   *
+   * @param extractors One or more extractors to choose from.
+   */
+  public ExtractorHolder(Extractor[] extractors) {
+    this.extractors = extractors;
+  }
+
+  /**
+   * Returns an initialized extractor for reading {@code input}, and returns the same extractor on
+   * later calls.
+   *
+   * @param input The {@link ExtractorInput} from which data should be read.
+   * @param output The {@link ExtractorOutput} that will be used to initialize the selected
+   *     extractor.
+   * @param uri The {@link Uri} of the data.
+   * @return An initialized extractor for reading {@code input}.
+   * @throws UnrecognizedInputFormatException Thrown if the input format could not be detected.
+   * @throws IOException Thrown if the input could not be read.
+   * @throws InterruptedException Thrown if the thread was interrupted.
+   */
+  public Extractor selectExtractor(ExtractorInput input, ExtractorOutput output, Uri uri)
+      throws IOException, InterruptedException {
+    if (extractor != null) {
+      return extractor;
+    }
+    if (extractors.length == 1) {
+      this.extractor = extractors[0];
+    } else {
+      for (Extractor extractor : extractors) {
+        try {
+          if (extractor.sniff(input)) {
+            this.extractor = extractor;
+            break;
+          }
+        } catch (EOFException e) {
+          // Do nothing.
+        } finally {
+          input.resetPeekPosition();
+        }
+      }
+      if (extractor == null) {
+        throw new UnrecognizedInputFormatException(
+            "None of the available extractors ("
+                + Util.getCommaDelimitedSimpleClassNames(extractors)
+                + ") could read the stream.",
+            uri);
+      }
+    }
+    extractor.init(output);
+    return extractor;
+  }
+
+  public void release() {
+    if (extractor != null) {
+      extractor.release();
+      extractor = null;
+    }
+  }
+}

library/core/src/main/java/com/google/android/exoplayer2/source/ProgressiveMediaPeriod.java

@@ -53,7 +53,6 @@ import com.google.android.exoplayer2.util.ConditionVariable;
 import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.android.exoplayer2.util.ParsableByteArray;
 import com.google.android.exoplayer2.util.Util;
-import java.io.EOFException;
 import java.io.IOException;
 import java.util.Arrays;
 import java.util.Collections;
@@ -1040,75 +1039,6 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     }
   }
 
-  /** Stores a list of extractors and a selected extractor when the format has been detected. */
-  private static final class ExtractorHolder {
-
-    private final Extractor[] extractors;
-
-    @Nullable private Extractor extractor;
-
-    /**
-     * Creates a holder that will select an extractor and initialize it using the specified output.
-     *
-     * @param extractors One or more extractors to choose from.
-     */
-    public ExtractorHolder(Extractor[] extractors) {
-      this.extractors = extractors;
-    }
-
-    /**
-     * Returns an initialized extractor for reading {@code input}, and returns the same extractor on
-     * later calls.
-     *
-     * @param input The {@link ExtractorInput} from which data should be read.
-     * @param output The {@link ExtractorOutput} that will be used to initialize the selected
-     *     extractor.
-     * @param uri The {@link Uri} of the data.
-     * @return An initialized extractor for reading {@code input}.
-     * @throws UnrecognizedInputFormatException Thrown if the input format could not be detected.
-     * @throws IOException Thrown if the input could not be read.
-     * @throws InterruptedException Thrown if the thread was interrupted.
-     */
-    public Extractor selectExtractor(ExtractorInput input, ExtractorOutput output, Uri uri)
-        throws IOException, InterruptedException {
-      if (extractor != null) {
-        return extractor;
-      }
-      if (extractors.length == 1) {
-        this.extractor = extractors[0];
-      } else {
-        for (Extractor extractor : extractors) {
-          try {
-            if (extractor.sniff(input)) {
-              this.extractor = extractor;
-              break;
-            }
-          } catch (EOFException e) {
-            // Do nothing.
-          } finally {
-            input.resetPeekPosition();
-          }
-        }
-        if (extractor == null) {
-          throw new UnrecognizedInputFormatException(
-              "None of the available extractors ("
-                  + Util.getCommaDelimitedSimpleClassNames(extractors)
-                  + ") could read the stream.",
-              uri);
-        }
-      }
-      extractor.init(output);
-      return extractor;
-    }
-
-    public void release() {
-      if (extractor != null) {
-        extractor.release();
-        extractor = null;
-      }
-    }
-  }
-
   /** Stores state that is initialized when preparation completes. */
   private static final class PreparedState {