Provide sha1 to outside applications

Patch from Diego Pettenò flameeyesATgmailDOTcom

Originally committed as revision 11207 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavutil/Makefile

@@ -16,6 +16,7 @@ OBJS = adler32.o \
        random.o \
        rational.o \
        rc4.o \
+       sha1.o \
        string.o \
        tree.o \
 
@@ -34,6 +35,7 @@ HEADERS = adler32.h \
           mem.h \
           random.h \
           rational.h \
+          sha1.h
 
 NAME=avutil
 LIBVERSION=$(LAVUVERSION)

libavutil/avutil.h

@@ -30,8 +30,8 @@
 #define AV_STRINGIFY(s)         AV_TOSTRING(s)
 #define AV_TOSTRING(s) #s
 
-#define LIBAVUTIL_VERSION_INT   ((49<<16)+(5<<8)+0)
-#define LIBAVUTIL_VERSION       49.5.0
+#define LIBAVUTIL_VERSION_INT   ((49<<16)+(6<<8)+0)
+#define LIBAVUTIL_VERSION       49.6.0
 #define LIBAVUTIL_BUILD         LIBAVUTIL_VERSION_INT
 
 #define LIBAVUTIL_IDENT         "Lavu" AV_STRINGIFY(LIBAVUTIL_VERSION)

libavutil/sha1.c

@@ -29,6 +29,8 @@ typedef struct AVSHA1 {
     uint32_t state[5];
 } AVSHA1;
 
+const int av_sha1_size = sizeof(AVSHA1);
+
 #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
 
 /* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */