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diff --git a/media/ffvpx/libavcodec/faanidct.h b/media/ffvpx/libavcodec/faanidct.h
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+/*
+ * Floating point AAN IDCT
+ * Copyright (c) 2008 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_FAANIDCT_H
+#define AVCODEC_FAANIDCT_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+void ff_faanidct(int16_t block[64]);
+void ff_faanidct_add(uint8_t *dest, ptrdiff_t line_size, int16_t block[64]);
+void ff_faanidct_put(uint8_t *dest, ptrdiff_t line_size, int16_t block[64]);
+
+#endif /* AVCODEC_FAANIDCT_H */