[FFmpeg-cvslog] xtea: Clarify that the current API works in big endian mode

[Martin Storsjö]

ffmpeg | branch: master | Martin Storsjö <martin at martin.st> | Wed Nov 11 21:49:44 2015 +0200| [1fc94724f1fd52944bb5ae571475c621da4b77a0] | committer: Martin Storsjö

xtea: Clarify that the current API works in big endian mode

Signed-off-by: Martin Storsjö <martin at martin.st>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=1fc94724f1fd52944bb5ae571475c621da4b77a0
---

 libavutil/xtea.h |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavutil/xtea.h b/libavutil/xtea.h
index 4d7c581..ad76955 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