Handle input or output len of 0 properly in lzo decoder.

[ffmpeg] / libavutil / sha1.h

diff --git a/libavutil/sha1.h b/libavutil/sha1.h
index 181cf79bd9728d91aaefbb24b1f795f24adf0aec..3ff58043ea716471d2ed16f17b0a7463fd1ce6a3 100644 (file)
--- a/libavutil/sha1.h
+++ b/libavutil/sha1.h
@@ -1,5 +1,25 @@
-#ifndef AV_SHA1_H
-#define AV_SHA1_H
+/*
+ * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * 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_SHA1_H
+#define AVUTIL_SHA1_H
 
 #include <stdint.h>
 
@@ -7,7 +27,31 @@ extern const int av_sha1_size;
 
 struct AVSHA1;
 
+/**
+ * Initialize SHA-1 hashing.
+ *
+ * @param context pointer to the function context (of size av_sha_size)
+ * @deprecated use av_sha_init() instead
+ */
 void av_sha1_init(struct AVSHA1* context);
-void av_sha1_update(struct AVSHA1* context, uint8_t* data, unsigned int len);
+
+/**
+ * Update hash value.
+ *
+ * @param context hash function context
+ * @param data    input data to update hash with
+ * @param len     input data length
+ * @deprecated use av_sha_update() instead
+ */
+void av_sha1_update(struct AVSHA1* context, const uint8_t* data, unsigned int len);
+
+/**
+ * Finish hashing and output digest value.
+ *
+ * @param context hash function context
+ * @param digest  buffer where output digest value is stored
+ * @deprecated use av_sha_final() instead
+ */
 void av_sha1_final(struct AVSHA1* context, uint8_t digest[20]);
-#endif
+
+#endif /* AVUTIL_SHA1_H */