Document SHA-1 functions and structures

Originally committed as revision 19385 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 20 insertions, 0 deletions

diff --git a/libavutil/sha1.h b/libavutil/sha1.h
index 0f14ca8960..b9a43cdd39 100644
--- a/libavutil/sha1.h
+++ b/libavutil/sha1.h
@@ -27,8 +27,28 @@ extern const int av_sha1_size;
 
 struct AVSHA1;
 
+/**
+ * Initializes SHA-1 hashing.
+ *
+ * @param context pointer to the function context (of size av_sha_size)
+ */
 void av_sha1_init(struct AVSHA1* context);
+
+/**
+ * Updates hash value.
+ *
+ * @param context hash function context
+ * @param data    input data to update hash with
+ * @param len     input data length
+ */
 void av_sha1_update(struct AVSHA1* context, const uint8_t* data, unsigned int len);
+
+/**
+ * Finishes hashing and output digest value.
+ *
+ * @param context hash function context
+ * @param digest  buffer where output digest value is stored
+ */
 void av_sha1_final(struct AVSHA1* context, uint8_t digest[20]);
 
 #endif /* AVUTIL_SHA1_H */