From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001
From: Sven Eisenhauer <sven@sven-eisenhauer.net>
Date: Fri, 10 Nov 2023 15:11:48 +0100
Subject: add new repo

---
 .../SineGenerator/src/SineGenerator.cpp            | 114 +++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 Master/Modellbildung_und_Simulation/Aufgabenblatt1/SineGenerator/src/SineGenerator.cpp

(limited to 'Master/Modellbildung_und_Simulation/Aufgabenblatt1/SineGenerator/src/SineGenerator.cpp')

diff --git a/Master/Modellbildung_und_Simulation/Aufgabenblatt1/SineGenerator/src/SineGenerator.cpp b/Master/Modellbildung_und_Simulation/Aufgabenblatt1/SineGenerator/src/SineGenerator.cpp
new file mode 100644
index 0000000..922c44b
--- /dev/null
+++ b/Master/Modellbildung_und_Simulation/Aufgabenblatt1/SineGenerator/src/SineGenerator.cpp
@@ -0,0 +1,114 @@
+/*
+ * SineGenerator.cpp
+ *
+ *  Created on: 31.03.2011
+ *      Author: sven
+ */
+#ifndef SINEGENERATOR_H_
+	#include "SineGenerator.h"
+#endif
+#ifndef _GLIBCXX_IOSTREAM
+	#include <iostream>
+#endif
+#ifndef _GLIBCXX_CMATH
+	#include <cmath>
+#endif
+#ifndef _GLIBCXX_NUMERIC_LIMITS
+	#include <limits>
+#endif
+#ifndef	_STRING_H
+	#include <string.h>
+#endif
+const double SineGenerator::PI=3.141592654;
+
+SineGenerator::SineGenerator(SineGeneratorParameters& params)
+:mParams(params)
+{
+}
+
+SineGenerator::~SineGenerator() {
+}
+
+void SineGenerator::generateWavefile()
+{
+	std::cout << "Freq: " << mParams.getFrequency()
+			<< " Amp: " << mParams.getAmplitude()
+			<< " Phase: " << mParams.getPhase()
+			<< " Length: " << mParams.getLength()
+			<< " File: " << mParams.getFilename()
+			<< std::endl;
+
+	std::ofstream wavefile;
+	wavefile.open(mParams.getFilename().c_str(), std::ios::out | std::ios::binary);
+	int filestart = wavefile.tellp();
+	writeWaveHeader(wavefile);
+	writeWaveData(wavefile);
+	int fileend = wavefile.tellp();
+	int filesize = fileend-filestart-8;
+	wavefile.seekp(0x4);
+	wavefile.write((char*) &filesize,sizeof(filesize));
+	wavefile.close();
+	std::cout << mParams.getFilename() << " written" << std::endl;
+}
+
+void SineGenerator::writeWaveHeader(std::ofstream& wavefile)
+{
+	const char* riff = "RIFF";
+	const char* wave = "WAVE";
+	const char* fmt = "fmt ";
+	int size = 0;
+	int fmtLen = 16;
+	short fmtTag = 0x0001;
+	short channels = 0x0001;
+	int sampleRate = mParams.getSamplerate();
+	short bitsPerSample = mParams.getBitrate();
+	short blockAlign = channels * (bitsPerSample / 8);
+	int bytesPerSecond = sampleRate * blockAlign;
+
+	wavefile.write(riff,strlen(riff));
+	wavefile.write((char*)&size,sizeof(size));
+	wavefile.write(wave,strlen(wave));
+	wavefile.write(fmt,strlen(fmt));
+	wavefile.write((char*) &fmtLen,sizeof(fmtLen));
+	wavefile.write((char*) &fmtTag,sizeof(fmtTag));
+	wavefile.write((char*) &channels,sizeof(channels));
+	wavefile.write((char*) &sampleRate,sizeof(sampleRate));
+	wavefile.write((char*) &bytesPerSecond,sizeof(bytesPerSecond));
+	wavefile.write((char*) &blockAlign,sizeof(blockAlign));
+	wavefile.write((char*) &bitsPerSample,sizeof(bitsPerSample));
+}
+
+void SineGenerator::writeWaveData(std::ofstream& wavefile)
+{
+	generateData();
+	const char* data = "data";
+	int dataLen = mData.size() * sizeof(short);
+	short actData = 0;
+	DataIter dataIter;
+	wavefile.write(data,strlen(data));
+	wavefile.write((char*) &dataLen,(sizeof(dataLen)));
+	for (dataIter = mData.begin(); dataIter != mData.end(); dataIter++)
+	{
+		actData = *dataIter;
+		wavefile.write((char*) &actData,(sizeof(actData)));
+	}
+}
+
+void SineGenerator::generateData()
+{
+	double actData = 0.0;
+	double amp = (double)(mParams.getAmplitude()) * ((double) std::numeric_limits<short>::max()) / 100.0;
+	double phaseRad = (double)(mParams.getPhase()) * PI / 180.0;
+	double freq = (double)(mParams.getFrequency());
+	double twoPi = 2.0 * PI;
+	short actShort;
+	for (short second = 0; second < mParams.getLength(); second++) {
+		for(unsigned short actTime = 0; actTime < mParams.getSamplerate(); actTime++)
+		{
+			actData = amp * std::sin((twoPi * freq * ((double) (actTime) / (double) mParams.getSamplerate() ) ) + phaseRad);
+			actShort = (short) std::floor(actData+.5);
+			//std::cout << actTime << ". " << actData << " " << actShort << std::endl;
+			mData.push_back(actShort);
+		}
+	}
+}
-- 
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