1 files changed, 77 insertions, 0 deletions
diff --git a/Master/Modellbildung_und_Simulation/Aufgabenblatt1/Superposition/src/WavefileSuperposition.cpp b/Master/Modellbildung_und_Simulation/Aufgabenblatt1/Superposition/src/WavefileSuperposition.cpp
new file mode 100644
index 0000000..91e16a2
--- /dev/null
+++ b/Master/Modellbildung_und_Simulation/Aufgabenblatt1/Superposition/src/WavefileSuperposition.cpp
@@ -0,0 +1,77 @@
+/*
+ * WavefileSuperposition.cpp
+ *
+ *  Created on: 01.04.2011
+ *      Author: sven
+ */
+
+#ifndef WAVEFILESUPERPOSITION_H_
+	#include "WavefileSuperposition.h"
+#endif
+#ifndef _GLIBCXX_IOSTREAM
+	#include <iostream>
+#endif
+
+#ifndef _GLIBCXX_FSTREAM
+	#include <fstream>
+#endif
+
+#ifndef _GLIBCXX_NUMERIC_LIMITS
+	#include <limits>
+#endif
+
+WavefileSuperposition::WavefileSuperposition(SuperpositionParameters& params)
+{
+	std::cout << "superposing " << params.getSourceFileOne() << " and " << params.getSourceFileTwo()
+			<< " to " << params.getDestinationFile() << std::endl;
+	std::ofstream supFile;
+	std::ifstream srcFile1;
+	std::ifstream srcFile2;
+	srcFile1.open(params.getSourceFileOne().c_str(), std::ios::in | std::ios::binary);
+	srcFile2.open(params.getSourceFileTwo().c_str(), std::ios::in | std::ios::binary);
+	supFile.open(params.getDestinationFile().c_str(), std::ios::out | std::ios::binary);
+	int dataStartOffset = 0x28;
+	char header[dataStartOffset];
+	srcFile1.read(&header[0],dataStartOffset);
+	supFile.write(&header[0],dataStartOffset);
+	int numSamples;
+	srcFile1.read((char*) &numSamples,sizeof(numSamples));
+	std::cout<<"Processing "<< numSamples << " samples" << std::endl;
+	srcFile2.seekg(srcFile1.tellg());
+	supFile.write((char*) &numSamples,sizeof(numSamples));
+	if (!(srcFile1.tellg() == srcFile2.tellg()) || !(srcFile1.tellg() == supFile.tellp()) ) {
+		std::cout << "file positions not in sync" << std::endl;
+		return;
+	}
+	short data1;
+	short data2;
+	int result;
+	short shortResult;
+	for (int i=0;i<numSamples;)
+	{
+		srcFile1.read((char*) &data1,sizeof(data1));
+		srcFile2.read((char*) &data2,sizeof(data2));
+		result = data1 + data2;
+		if (result > std::numeric_limits<short>::max())
+		{
+			shortResult = std::numeric_limits<short>::max();
+		}
+		else if (result < std::numeric_limits<short>::min())
+		{
+			shortResult = std::numeric_limits<short>::min();
+		} else
+		{
+			shortResult = static_cast<short>(result);
+		}
+		supFile.write((char*) &shortResult,sizeof(shortResult));
+		i += sizeof(short);
+	}
+	supFile.close();
+	srcFile1.close();
+	srcFile2.close();
+	std::cout<<"done" << std::endl;
+}
+
+WavefileSuperposition::~WavefileSuperposition() {
+	// TODO Auto-generated destructor stub
+}