New scope: interim state (1)

2026-06-09 09:25:07 -04:00 · 2017-01-29 19:51:45 +01:00
parent 6d4c000107
commit f0f7838765
22 changed files with 5147 additions and 0 deletions
@@ -0,0 +1,77 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2016 Edouard Griffiths, F4EXB                                   //
+//                                                                               //
+// 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 as version 3 of the License, or                  //
+//                                                                               //
+// 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 V3 for more details.                               //
+//                                                                               //
+// You should have received a copy of the GNU General Public License             //
+// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#ifndef SDRBASE_UTIL_DOUBLEBUFFER_H_
+#define SDRBASE_UTIL_DOUBLEBUFFER_H_
+
+#include <vector>
+#include <algorithm>
+
+template<typename T>
+class DoubleBufferSimple
+{
+public:
+	DoubleBufferSimple()
+    {
+	    m_size = 0;
+        m_current = m_data.end();
+	}
+
+	~DoubleBufferSimple() {}
+
+	void resize(int size)
+	{
+	    m_size = size;
+        m_data.resize(2*size);
+        m_current = m_data.begin();
+	}
+
+	void write(const typename std::vector<T>::const_iterator& begin, const typename std::vector<T>::const_iterator& cend)
+	{
+		typename std::vector<T>::const_iterator end = cend;
+
+		if ((end - begin) > m_size)
+		{
+			end = begin + m_size;
+		}
+
+		int insize = end - begin;
+
+		std::copy(begin, end, m_current);
+
+		if (((m_current - m_data.begin()) + insize) > m_size)
+		{
+			int sizeLeft = m_size - (m_current - m_data.begin());
+			std::copy(begin, begin + sizeLeft, m_current + m_size);
+			std::copy(begin + sizeLeft, end, m_data.begin());
+			m_current = m_data.begin() + (insize - sizeLeft);
+		}
+		else
+		{
+			std::copy(begin, end, m_current + m_size);
+			m_current += insize;
+		}
+	}
+
+	typename std::vector<T>::iterator getCurrent() const { return m_current + m_size; }
+
+private:
+	int m_size;
+	std::vector<T> m_data;
+	typename std::vector<T>::iterator m_current;
+};
+
+#endif /* SDRBASE_UTIL_DOUBLEBUFFER_H_ */