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diff --git a/app/src/main/jni/ffmpeg-3.0.11/include/libavutil/cast5.h b/app/src/main/jni/ffmpeg-3.0.11/include/libavutil/cast5.h
new file mode 100644
index 0000000..ad5b347
--- /dev/null
+++ b/app/src/main/jni/ffmpeg-3.0.11/include/libavutil/cast5.h
@@ -0,0 +1,80 @@
+/*
+ * An implementation of the CAST128 algorithm as mentioned in RFC2144
+ * Copyright (c) 2014 Supraja Meedinti
+ *
+ * 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 AVUTIL_CAST5_H
+#define AVUTIL_CAST5_H
+
+#include <stdint.h>
+
+
+/**
+  * @file
+  * @brief Public header for libavutil CAST5 algorithm
+  * @defgroup lavu_cast5 CAST5
+  * @ingroup lavu_crypto
+  * @{
+  */
+
+extern const int av_cast5_size;
+
+struct AVCAST5;
+
+/**
+  * Allocate an AVCAST5 context
+  * To free the struct: av_free(ptr)
+  */
+struct AVCAST5 *av_cast5_alloc(void);
+/**
+  * Initialize an AVCAST5 context.
+  *
+  * @param ctx an AVCAST5 context
+  * @param key a key of 5,6,...16 bytes used for encryption/decryption
+  * @param key_bits number of keybits: possible are 40,48,...,128
+  * @return 0 on success, less than 0 on failure
+ */
+int av_cast5_init(struct AVCAST5 *ctx, const uint8_t *key, int key_bits);
+
+/**
+  * Encrypt or decrypt a buffer using a previously initialized context, ECB mode only
+  *
+  * @param ctx an AVCAST5 context
+  * @param dst destination array, can be equal to src
+  * @param src source array, can be equal to dst
+  * @param count number of 8 byte blocks
+  * @param decrypt 0 for encryption, 1 for decryption
+ */
+void av_cast5_crypt(struct AVCAST5 *ctx, uint8_t *dst, const uint8_t *src, int count, int decrypt);
+
+/**
+  * Encrypt or decrypt a buffer using a previously initialized context
+  *
+  * @param ctx an AVCAST5 context
+  * @param dst destination array, can be equal to src
+  * @param src source array, can be equal to dst
+  * @param count number of 8 byte blocks
+  * @param iv initialization vector for CBC mode, NULL for ECB mode
+  * @param decrypt 0 for encryption, 1 for decryption
+ */
+void av_cast5_crypt2(struct AVCAST5 *ctx, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt);
+/**
+ * @}
+ */
+#endif /* AVUTIL_CAST5_H */