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-rw-r--r--libavutil/xtea.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/libavutil/xtea.h b/libavutil/xtea.h
index 4d7c5818d3..ad76955db4 100644
--- a/libavutil/xtea.h
+++ b/libavutil/xtea.h
@@ -49,12 +49,14 @@ AVXTEA *av_xtea_alloc(void);
* Initialize an AVXTEA context.
*
* @param ctx an AVXTEA context
- * @param key a key of 16 bytes used for encryption/decryption
+ * @param key a key of 16 bytes used for encryption/decryption,
+ * interpreted as big endian 32 bit numbers
*/
void av_xtea_init(struct AVXTEA *ctx, const uint8_t key[16]);
/**
- * Encrypt or decrypt a buffer using a previously initialized context.
+ * Encrypt or decrypt a buffer using a previously initialized context,
+ * in big endian format.
*
* @param ctx an AVXTEA context
* @param dst destination array, can be equal to src