added MultiBuffer::quer with init. list for multi delays

delay/buffer_multi.hpp

@@ -147,6 +147,33 @@ class BufferMulti
 		return querBuffer;
 	}
 
+	dsp::Buffer<T> quer(std::initializer_list<int> offsets)
+	{
+		Buffer<T> querBuffer(offsets.size());
+		
+		uint ch = 0;
+		for (int offset: offsets)
+		{
+			querBuffer[ch] = m_buffer[ch][offset];
+			ch++;
+		}
+		return querBuffer;
+	}
+
+	const dsp::Buffer<T> quer(std::initializer_list<int> offsets) const
+	{
+		Buffer<T> querBuffer(offsets.size());
+		
+		uint ch = 0;
+		for (int offset: offsets)
+		{
+			querBuffer[ch] = m_buffer[ch][offset];
+			ch++;
+		}
+		return querBuffer;
+	}
+
+	
 	Buffer<T> at(uint channel)
 	{
 		return m_buffer[channel];