Include audio mapping in the digest used to distinguish different

audio analyses so that the analyses are re-computed when the mapping
changes.

Reported-by: Matthias Damm

1 files changed, 43 insertions, 0 deletions

diff --git a/src/lib/md5_digester.h b/src/lib/md5_digester.h
new file mode 100644
index 000000000..d5b6a9c4c
--- /dev/null
+++ b/src/lib/md5_digester.h
@@ -0,0 +1,43 @@
+/*
+    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+
+    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; either version 2 of the License, or
+    (at your option) any later version.
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <string>
+#include <boost/noncopyable.hpp>
+#include <boost/optional.hpp>
+#include <openssl/md5.h>
+
+class MD5Digester : public boost::noncopyable
+{
+public:
+	MD5Digester ();
+	~MD5Digester ();
+
+	void add (void const * data, size_t size);
+
+	template <class T>
+	void add (T data) {
+		add (&data, sizeof (T));
+	}
+	
+	std::string get () const;
+
+private:
+	mutable MD5_CTX _context;
+	mutable boost::optional<std::string> _digest;
+};