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diff --git a/examples/file_reader_constants.h b/examples/file_reader_constants.h
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+/*
+ * Copyright 2019 The libgav1 Authors
+ *
+ * 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.
+ */
+
+#ifndef LIBGAV1_EXAMPLES_FILE_READER_CONSTANTS_H_
+#define LIBGAV1_EXAMPLES_FILE_READER_CONSTANTS_H_
+
+namespace libgav1 {
+
+enum {
+  kIvfHeaderVersion = 0,
+  kIvfFrameHeaderSize = 12,
+  kIvfFileHeaderSize = 32,
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+  kMaxTemporalUnitSize = 512 * 1024,
+#else
+  kMaxTemporalUnitSize = 256 * 1024 * 1024,
+#endif
+};
+
+extern const char kIvfSignature[4];
+extern const char kAv1FourCcUpper[4];
+extern const char kAv1FourCcLower[4];
+
+}  // namespace libgav1
+
+#endif  // LIBGAV1_EXAMPLES_FILE_READER_CONSTANTS_H_