mp3: Make the extrasize explicit

[ffmpeg] / libavutil / aes.h

diff --git a/libavutil/aes.h b/libavutil/aes.h
index 7d777198cb49d42dcbf56d094f915d3e75dc58c1..5b451241e4b5eb3d45aa20819eb26b0c323221bb 100644 (file)
--- a/libavutil/aes.h
+++ b/libavutil/aes.h
@@ -1,35 +1,63 @@
 /*
  * copyright (c) 2007 Michael Niedermayer <michaelni@gmx.at>
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef AES_H
-#define AES_H
+#ifndef AVUTIL_AES_H
+#define AVUTIL_AES_H
 
-extern const int av_aes_size;
+#include <stdint.h>
+
+#include "attributes.h"
+#include "version.h"
+
+/**
+ * @defgroup lavu_aes AES
+ * @ingroup lavu_crypto
+ * @{
+ */
 
 struct AVAES;
 
 /**
- * initalizes a AVAES context
+ * Allocate an AVAES context.
+ */
+struct AVAES *av_aes_alloc(void);
+
+/**
+ * Initialize an AVAES context.
  * @param key_bits 128, 192 or 256
  * @param decrypt 0 for encryption, 1 for decryption
  */
-int av_aes_init(struct AVAES *a, uint8_t *key, int key_bits, int decrypt);
+int av_aes_init(struct AVAES *a, const uint8_t *key, int key_bits, int decrypt);
+
+/**
+ * Encrypt or decrypt a buffer using a previously initialized context.
+ * @param count number of 16 byte blocks
+ * @param dst destination array, can be equal to src
+ * @param src source array, can be equal to dst
+ * @param iv initialization vector for CBC mode, if NULL then ECB will be used
+ * @param decrypt 0 for encryption, 1 for decryption
+ */
+void av_aes_crypt(struct AVAES *a, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt);
+
+/**
+ * @}
+ */
 
-#endif /* AES_H */
+#endif /* AVUTIL_AES_H */