libbpg-0.9.6

x265/source/common/md5.h

@@ -0,0 +1,79 @@
+/*****************************************************************************
+ * md5.h: Calculate MD5
+ *****************************************************************************
+ * Copyright (C) 2011-2012 x265 project
+ *
+ * Authors: Min Chen <chenm003@163.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation;
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
+ *
+ * This program is also available under a commercial proprietary license.
+ * For more information, contact us at chenm003@163.com.
+ *****************************************************************************/
+
+#ifndef X265_MD5_H
+#define X265_MD5_H
+
+#include "common.h"
+
+namespace X265_NS {
+//private x265 namespace
+
+typedef struct MD5Context
+{
+    uint32_t buf[4];
+    uint32_t bits[2];
+    unsigned char in[64];
+} MD5Context;
+
+void MD5Init(MD5Context *context);
+void MD5Update(MD5Context *context, unsigned char *buf, uint32_t len);
+void MD5Final(MD5Context *ctx, uint8_t *digest);
+
+class MD5
+{
+public:
+
+    /**
+     * initialize digest state
+     */
+    MD5()
+    {
+        MD5Init(&m_state);
+    }
+
+    /**
+     * compute digest over buf of length len.
+     * multiple calls may extend the digest over more data.
+     */
+    void update(unsigned char *buf, unsigned len)
+    {
+        MD5Update(&m_state, buf, len);
+    }
+
+    /**
+     * flush any outstanding MD5 data, write the digest into digest.
+     */
+    void finalize(unsigned char digest[16])
+    {
+        MD5Final(&m_state, digest);
+    }
+
+private:
+
+    MD5Context m_state;
+};
+}
+
+#endif // ifndef X265_MD5_H