- added MultiBuffer

- improved tests

delay/buffer.hpp

@@ -31,6 +31,7 @@
 #include <stdint.h>
 #include <sys/types.h>
 #include <dsp_types.hpp>
+#include <iostream>
 
 namespace dsp {
 
@@ -41,7 +42,7 @@ class Buffer
 	uint m_mask;
 	size_t m_capacity;
 	vector<T> m_buffer;
-
+	
 	public:
 	Buffer(size_t capacity)
 	: m_index(0)
@@ -75,13 +76,13 @@ class Buffer
 	}
 
 	T & operator[](int offset)
-	{
-		return m_buffer[(m_index + (uint)offset) & m_mask];
+	{	
+		return at(offset);
 	}
 
 	const T & operator[](int offset) const
 	{
-		return m_buffer[(m_index + (uint)offset) & m_mask];
+		return at(offset);
 	}
 
 	Buffer & operator ++() 
@@ -112,7 +113,43 @@ class Buffer
 		return *this;
 	}
 
+	typedef std::vector<T>::iterator iterator;
+	typedef std::vector<T>::const_iterator const_iterator;
+	iterator begin()
+	{
+		return m_buffer.begin();
+	}
+
+	iterator end()
+	{
+		return m_buffer.end();
+	}
+
+	const_iterator begin() const
+	{
+		return m_buffer.begin();
+	}
+
+	const_iterator end() const
+	{
+		return m_buffer.end();
+	}
+
+protected:
+	virtual T & at(int offset)
+	{
+		int i = (m_index + (uint)offset) & m_mask;
+		return m_buffer[i];
+	}
+
+	virtual const T & at(int offset) const
+	{
+		return at(offset);
+	}
+
+
 };
 }
 
+
 #endif // DSP_BUFFER_H