■ 사운드 필터링을 사용하는 방법을 보여준다.
▶ FFT.cs
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using System; namespace TestProject { /// <summary> /// 고속 푸리엔 변환 /// </summary> public class FFT { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Protected #region Field /// <summary> /// 사인 배정도 실수 배열 /// </summary> /// <remarks>sin(pi / 2), sin(pi / 4), sin(pi / 8) ...</remarks> protected static double[] _sineDoubleArray = null; /// <summary> /// 사인 단정도 실수 배열 /// </summary> protected static float[] _sineFloatArray = null; /// <summary> /// 코사인 배정도 실수 배열 /// </summary> /// <remarks>cos(pi / 2), cos(pi / 4), cos(pi / 8) ...</remarks> protected static double[] _cosineDoubleArray = null; /// <summary> /// 코사인 단정도 실수 배열 /// </summary> protected static float[] _cosineFloatArray = null; /// <summary> /// 테이블 잠금 객체 /// </summary> protected static object _tableLock = new object(); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public // 배정도 실수 #region 순방향 FFT 계산하기 - ComputeForwardFFT(sourceRealArray) /// <summary> /// 순방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> public static void ComputeForwardFFT(double[] sourceRealArray) { ComputeFFT(sourceRealArray, true); } #endregion #region 순방향 FFT 계산하기 - ComputeForwardFFT(sourceRealArray, targetRealArray) /// <summary> /// 순방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> public static void ComputeForwardFFT(double[] sourceRealArray, double[] targetRealArray) { ComputeFFT(sourceRealArray, targetRealArray, true); } #endregion #region 순방향 FFT 계산하기 - ComputeForwardFFT(sourceRealArray, targetRealArray, targetImaginaryArray) /// <summary> /// 순방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="targetImaginaryArray">타겟 허수 배열</param> public static void ComputeForwardFFT(double[] sourceRealArray, double[] targetRealArray, double[] targetImaginaryArray) { ComputeFFT(sourceRealArray, targetRealArray, targetImaginaryArray, true); } #endregion #region 순방향 FFT 계산하기 - ComputeForwardFFT(sourceRealArray, sourceImaginaryArray, targetRealArray) /// <summary> /// 순방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="sourceImaginaryArray">소스 허수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> public static void ComputeForwardFFT(float[] sourceRealArray, float[] sourceImaginaryArray, float[] targetRealArray) { ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, true); } #endregion #region 순방향 FFT 계산하기 - ComputeForwardFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray) /// <summary> /// 순방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="sourceImaginaryArray">소스 허수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="targetImaginaryArray">타겟 허수 배열</param> public static void ComputeForwardFFT ( double[] sourceRealArray, double[] sourceImaginaryArray, double[] targetRealArray, double[] targetImaginaryArray ) { ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray, true); } #endregion #region 역방향 FFT 계산하기 - ComputeInverseFFT(sourceRealArray) /// <summary> /// 역방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> public static void ComputeInverseFFT(double[] sourceRealArray) { ComputeFFT(sourceRealArray, false); } #endregion #region 역방향 FFT 계산하기 - ComputeInverseFFT(sourceRealArray, targetRealArray) /// <summary> /// 역방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> public static void ComputeInverseFFT(double[] sourceRealArray, double[] targetRealArray) { ComputeFFT(sourceRealArray, targetRealArray, false); } #endregion #region 역방향 FFT 계산하기 - ComputeInverseFFT(sourceRealArray, targetRealArray, targetImaginaryArray) /// <summary> /// 역방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="targetImaginaryArray">타겟 허수 배열</param> public static void ComputeInverseFFT(double[] sourceRealArray, double[] targetRealArray, double[] targetImaginaryArray) { ComputeFFT(sourceRealArray, targetRealArray, targetImaginaryArray, true); } #endregion #region 역방향 FFT 계산하기 - ComputeInverseFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray) /// <summary> /// 역방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="sourceImaginaryArray">소스 허수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="targetImaginaryArray">타겟 허수 배열</param> public static void ComputeInverseFFT ( double[] sourceRealArray, double[] sourceImaginaryArray, double[] targetRealArray, double[] targetImaginaryArray ) { ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray, false); } #endregion // 단정도 실수 #region 순방향 FFT 계산하기 - ComputeForwardFFT(sourceRealArray) /// <summary> /// 순방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> public static void ComputeForwardFFT(float[] sourceRealArray) { ComputeFFT(sourceRealArray, true); } #endregion #region 순방향 FFT 계산하기 - ComputeForwardFFT(sourceRealArray, targetRealArray) /// <summary> /// 순방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> public static void ComputeForwardFFT(float[] sourceRealArray, float[] targetRealArray) { ComputeFFT(sourceRealArray, targetRealArray, true); } #endregion #region 순방향 FFT 계산하기 - ComputeForwardFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray) /// <summary> /// 순방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="sourceImaginaryArray">소스 허수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="targetImaginaryArray">타겟 허수 배열</param> public static void ComputeForwardFFT ( float[] sourceRealArray, float[] sourceImaginaryArray, float[] targetRealArray, float[] targetImaginaryArray ) { ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray, true); } #endregion #region 역방향 FFT 계산하기 - ComputeInverseFFT(sourceRealArray) /// <summary> /// 역방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> public static void ComputeInverseFFT(float[] sourceRealArray) { ComputeFFT(sourceRealArray, false); } #endregion #region 역방향 FFT 계산하기 - ComputeInverseFFT(sourceRealArray, targetRealArray) /// <summary> /// 역방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> public static void ComputeInverseFFT(float[] sourceRealArray, float[] targetRealArray) { ComputeFFT(sourceRealArray, targetRealArray, false); } #endregion #region 역방향 FFT 계산하기 - ComputeInverseFFT(sourceRealArray, targetRealArray, targetImaginaryArray) /// <summary> /// 역방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="targetImaginaryArray">타겟 허수 배열</param> public static void ComputeInverseFFT(float[] sourceRealArray, float[] targetRealArray, float[] targetImaginaryArray) { ComputeFFT(sourceRealArray, targetRealArray, targetImaginaryArray, true); } #endregion #region 역방향 FFT 계산하기 - ComputeInverseFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray) /// <summary> /// 역방향 FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="sourceImaginaryArray">소스 허수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="targetImaginaryArray">타겟 허수 배열</param> public static void ComputeInverseFFT ( float[] sourceRealArray, float[] sourceImaginaryArray, float[] targetRealArray, float[] targetImaginaryArray ) { ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray, false); } #endregion //////////////////////////////////////////////////////////////////////////////// Protected #region 배열 값 설정하기 - SetArrayValue() /// <summary> /// 배열 값 설정하기 /// </summary> protected static void SetArrayValue() { if(_sineDoubleArray != null) { return; } lock(_tableLock) { if(_sineDoubleArray != null) { return; } int size = 20; double[] sineDoubleArray = new double[size]; float[] sineFloatArray = new float[size]; double[] cosineDoubleArray = new double[size]; float[] cosineFloatArray = new float[size]; double pi = Math.PI; for(int i = 0; i < size; i++) { sineDoubleArray[i] = Math.Sin(pi); sineFloatArray[i] = (float)(sineDoubleArray[i]); cosineDoubleArray[i] = Math.Cos(pi); cosineFloatArray[i] = (float)(cosineDoubleArray[i]); pi /= 2; } _sineFloatArray = sineFloatArray; _sineDoubleArray = sineDoubleArray; _cosineFloatArray = cosineFloatArray; _cosineDoubleArray = cosineDoubleArray; } } #endregion #region 비트 반전하기 - ReverseBit(value, bitCount) /// <summary> /// 비트 반전하기 /// </summary> /// <param name="value">값</param> /// <param name="bitCount">비트 수</param> /// <returns>반전 값</returns> protected static int ReverseBit(int value, int bitCount) { int result = 0; for(int b = 0; b < bitCount; ++b) { result <<= 1; result |= value & 1; value >>= 1; } return result; } #endregion // 배정도 실수 #region FFT 수행하기 - PerformFFT(sourceRealArray, sourceImaginaryArray, forward) /// <summary> /// FFT 수행하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="sourceImaginaryArray">소스 허수 배열</param> /// <param name="forward">순방향 여부</param> protected static void PerformFFT(double[] sourceRealArray, double[] sourceImaginaryArray, bool forward) { int length = sourceRealArray.Length; double sign = forward ? 1 : -1; int index = 0; for(int p = 1; p < length; p <<= 1) { int p2 = p << 1; double sine = sign * _sineDoubleArray[index]; double cosine = _cosineDoubleArray[index++]; double wr = 1.0; double wi = 0.0; int j; for(j = 0; j < p; ++j) { int k; for(k = j; k < length; k += p2) { int k2 = k + p; double tr = (wr * sourceRealArray[k2]) - (wi * sourceImaginaryArray[k2]); double ti = (wr * sourceImaginaryArray[k2]) + (wi * sourceRealArray[k2]); sourceRealArray[k2] = sourceRealArray[k] - tr; sourceImaginaryArray[k2] = sourceImaginaryArray[k] - ti; sourceRealArray[k] += tr; sourceImaginaryArray[k] += ti; } double nwr = (wr * cosine) - (wi * sine); double nwi = (wi * cosine) + (wr * sine); wr = nwr; wi = nwi; } } } #endregion #region FFT 계산하기 - ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray, forward) /// <summary> /// FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="sourceImaginaryArray">소스 허수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="targetImaginaryArray">타겟 허수 배열</param> /// <param name="forward">순방향 여부</param> protected static void ComputeFFT ( double[] sourceRealArray, double[] sourceImaginaryArray, double[] targetRealArray, double[] targetImaginaryArray, bool forward ) { SetArrayValue(); int length = sourceRealArray.Length; int i; int bitCount = 0; for(i = 1; i < length; i <<= 1) { bitCount++; } for(i = 0; i < length; i++) { int p = ReverseBit(i, bitCount); targetRealArray[p] = sourceRealArray[i]; targetImaginaryArray[p] = sourceImaginaryArray[i]; } PerformFFT(targetRealArray, targetImaginaryArray, forward); } #endregion #region FFT 계산하기 - ComputeFFT(sourceRealArray, forward) /// <summary> /// FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="forward">순방향 여부</param> protected static void ComputeFFT(double[] sourceRealArray, bool forward) { double[] targetRealArray = new double[sourceRealArray.Length]; double[] sourceImaginaryArray = new double[sourceRealArray.Length]; double[] targetImaginaryArray = new double[sourceRealArray.Length]; for(int i = 0; i < sourceRealArray.Length; i++) { sourceImaginaryArray[i] = 0; } ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray, forward); for(int i = 0; i < sourceRealArray.Length; i++) { targetRealArray[i] = System.Math.Sqrt ( (targetRealArray[i] * targetRealArray[i]) + (targetImaginaryArray[i] * targetImaginaryArray[i]) ); } } #endregion #region FFT 계산하기 - ComputeFFT(sourceRealArray, targetRealArray, forward) /// <summary> /// FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="forward">순방향 여부</param> protected static void ComputeFFT(double[] sourceRealArray, double[] targetRealArray, bool forward) { double[] sourceImaginaryArray = new double[sourceRealArray.Length]; double[] targetImaginaryArray = new double[sourceRealArray.Length]; for(int i = 0; i < sourceRealArray.Length; i++) { sourceImaginaryArray[i] = 0; } ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray, forward); for(int i = 0; i < sourceRealArray.Length; i++) { targetRealArray[i] = Math.Sqrt ( (targetRealArray[i] * targetRealArray[i]) + (targetImaginaryArray[i] * targetImaginaryArray[i]) ); } } #endregion #region FFT 계산하기 - ComputeFFT(sourceRealArray, targetRealArray, targetImaginaryArray, forward) /// <summary> /// FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="targetImaginaryArray">타겟 허수 배열</param> /// <param name="forward">순방향 여부</param> protected static void ComputeFFT(double[] sourceRealArray, double[] targetRealArray, double[] targetImaginaryArray, bool forward) { double[] sourceImaginaryArray = new double[sourceRealArray.Length]; for(int i = 0; i < sourceRealArray.Length; i++) { sourceImaginaryArray[i] = 0; } ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray, forward); } #endregion // 단정도 실수 #region FFT 수행하기 - PerformFFT(sourceRealArray, sourceImaginaryArray, forward) /// <summary> /// FFT 수행하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="sourceImaginaryArray">소스 허수 배열</param> /// <param name="forward">순방향 여부</param> protected static void PerformFFT(float[] sourceRealArray, float[] sourceImaginaryArray, bool forward) { int length = sourceRealArray.Length; float sign = forward ? 1 : -1; int index = 0; for(int p = 1; p < length; p <<= 1) { int p2 = p << 1; float sine = sign * _sineFloatArray[index]; float cosine = _cosineFloatArray[index++]; float wr = 1.0f; float wi = 0.0f; int j; for(j = 0; j < p; j++) { int k; for(k = j; k < length; k += p2) { int k2 = k + p; float tr = (wr * sourceRealArray[k2]) - (wi * sourceImaginaryArray[k2]); float ti = (wr * sourceImaginaryArray[k2]) + (wi * sourceRealArray[k2]); sourceRealArray[k2] = sourceRealArray[k] - tr; sourceImaginaryArray[k2] = sourceImaginaryArray[k] - ti; sourceRealArray[k] += tr; sourceImaginaryArray[k] += ti; } float nwr = (wr * cosine) - (wi * sine); float nwi = (wi * cosine) + (wr * sine); wr = nwr; wi = nwi; } } } #endregion #region FFT 계산하기 - ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray, forward) /// <summary> /// FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="sourceImaginaryArray">소수 허수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="targetImaginaryArray">타겟 허수 배열</param> /// <param name="forward">순방향 여부</param> protected static void ComputeFFT ( float[] sourceRealArray, float[] sourceImaginaryArray, float[] targetRealArray, float[] targetImaginaryArray, bool forward ) { SetArrayValue(); int length = sourceRealArray.Length; int i; int bitCount = 0; for(i = 1; i < length; i <<= 1) { bitCount++; } length = 1 << (bitCount-1); for(i = 0; i < length; i++) { int p = ReverseBit(i, bitCount); targetRealArray[p] = sourceRealArray[i]; targetImaginaryArray[p] = sourceImaginaryArray[i]; } PerformFFT(targetRealArray, targetImaginaryArray, forward); } #endregion #region FFT 계산하기 - ComputeFFT(sourceRealArray, forward) /// <summary> /// FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="forward">순방향 여부</param> protected static void ComputeFFT(float[] sourceRealArray, bool forward) { float[] sourceImaginaryArray = new float[sourceRealArray.Length]; float[] targetRealArray = new float[sourceRealArray.Length]; float[] targetImaginaryArray = new float[sourceRealArray.Length]; for(int i = 0; i < sourceRealArray.Length; i++) { sourceImaginaryArray[i] = 0; } ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray, forward); for(int i = 0; i < sourceRealArray.Length; i++) { targetRealArray[i] = (float)Math.Sqrt ( (targetRealArray[i] * targetRealArray[i]) + (targetImaginaryArray[i] * targetImaginaryArray[i]) ); } } #endregion #region FFT 계산하기 - ComputeFFT(sourceRealArray, targetRealArray, forward) /// <summary> /// FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="forward">순방향 여부</param> protected static void ComputeFFT(float[] sourceRealArray, float[] targetRealArray, bool forward) { float[] sourceImaginaryArray = new float[sourceRealArray.Length]; float[] targetImaginaryArray = new float[sourceRealArray.Length]; float[] temporaryRealArray = new float[sourceRealArray.Length]; for(int i = 0; i < sourceRealArray.Length; i++) { sourceImaginaryArray[i] = 0; } ComputeFFT(sourceRealArray, sourceImaginaryArray, temporaryRealArray, targetImaginaryArray, forward); for(int i = 0; i < targetRealArray.Length; i++) { targetRealArray[i] = (float)Math.Sqrt ( (temporaryRealArray[i] * temporaryRealArray[i]) + (targetImaginaryArray[i] * targetImaginaryArray[i]) ); } } #endregion #region FFT 계산하기 - ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, forward) /// <summary> /// FFT 계산하기 /// </summary> /// <param name="sourceRealArray">소스 실수 배열</param> /// <param name="sourceImaginaryArray">소스 허수 배열</param> /// <param name="targetRealArray">타겟 실수 배열</param> /// <param name="forward">순방향 여부</param> protected static void ComputeFFT(float[] sourceRealArray, float[] sourceImaginaryArray, float[] targetRealArray, bool forward) { float[] targetImaginaryArray = new float[sourceRealArray.Length]; ComputeFFT(sourceRealArray, sourceImaginaryArray, targetRealArray, targetImaginaryArray, forward); for(int i = 0; i < sourceRealArray.Length; i++) { targetRealArray[i] = (float)Math.Sqrt ( (targetRealArray[i] * targetRealArray[i]) + (targetImaginaryArray[i] * targetImaginaryArray[i]) ); } } #endregion } } |
▶ Line.cs
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using System.Drawing; namespace TestProject { /// <summary> /// 선 /// </summary> public class Line { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// 명칭 /// </summary> public string Name = string.Empty; /// <summary> /// 표시 여부 /// </summary> public bool Visible = true; /// <summary> /// X 배열 /// </summary> /// <remarks>NULL인 경우 Y 인덱스를 사용한다.</remarks> public double[] XArray = null; /// <summary> /// Y 배열 /// </summary> public double[] YArray = null; /// <summary> /// 선 색상 /// </summary> public Color LineColor = Color.Black; /// <summary> /// 선 너비 /// </summary> public float LineWidth = 1f; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 최소 X - MinimumX /// <summary> /// 최소 X /// </summary> public double MinimumX { get { double [] xArray = XArray; if(xArray == null) { return 0; } if(xArray.Length < 1) { return 0; } double minimumX = xArray[0]; for(int i = 0; i < xArray.Length; i++) { minimumX = minimumX < xArray[i] ? minimumX : xArray[i]; } return minimumX; } } #endregion #region 최대 X - MaximumX /// <summary> /// 최대 X /// </summary> public double MaximumX { get { double[] xArray = XArray; if(xArray == null) { double[] yArray = YArray; if(yArray == null) { return 0; } return yArray.Length; } if(xArray.Length < 1) { return 0; } double maximumX = xArray[0]; for(int i = 0; i < xArray.Length; i++) { maximumX = maximumX > xArray[i] ? maximumX : xArray[i]; } return maximumX; } } #endregion #region 최소 X - MinimumY /// <summary> /// 최소 X /// </summary> public double MinimumY { get { double[] yArray = YArray; if(yArray == null) { return 0; } if(yArray.Length < 1) { return 0; } double minimumY = yArray[0]; for(int i = 0; i < yArray.Length; i++) { minimumY = minimumY < yArray[i] ? minimumY : yArray[i]; } return minimumY; } } #endregion #region 최대 Y - MaximumY /// <summary> /// 최대 Y /// </summary> public double MaximumY { get { double[] yArray = YArray; if(yArray == null) { return 0; } if(yArray.Length < 1) { return 0; } double maximumY = yArray[0]; for(int i = 0; i < yArray.Length; i++) { maximumY = maximumY > yArray[i] ? maximumY : yArray[i]; } return maximumY; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 업데이트하기 - Update(xArray, yArray) /// <summary> /// 업데이트하기 /// </summary> /// <param name="xArray">X 배열</param> /// <param name="yArray">Y 배열</param> public void Update(float[] xArray, float[] yArray) { if(xArray != null) { bool resize = XArray == null ? true : XArray.Length == xArray.Length ? false : true; double[] newXArray = resize ? new double[xArray.Length] : XArray; for(int i = 0; i < xArray.Length; i++) { newXArray[i] = xArray[i]; } XArray = newXArray; } else { XArray = null; } if(yArray != null) { bool resize = YArray == null ? true : YArray.Length == yArray.Length ? false : true; double[] newYArray = resize ? new double[yArray.Length] : YArray; for(int i = 0; i < yArray.Length; i++) { newYArray[i] = yArray[i]; } YArray = newYArray; } else { YArray = null; } } #endregion #region 업데이트하기 - Update(yArray) /// <summary> /// 업데이트하기 /// </summary> /// <param name="yArray">Y 배열</param> public void Update(float[] yArray) { Update(null, yArray); } #endregion #region 업데이트하기 - Update(xArray, yArray) /// <summary> /// 업데이트하기 /// </summary> /// <param name="xArray">X 배열</param> /// <param name="yArray">Y 배열</param> public void Update(double[] xArray, double[] yArray) { if(xArray != null) { bool resize = XArray == null ? true : XArray.Length == xArray.Length ? false : true; double[] newXArray = resize ? new double[xArray.Length] : XArray; for(int i = 0; i < xArray.Length; i++) { newXArray[i] = xArray[i]; } XArray = newXArray; } else { XArray = null; } if(yArray != null) { bool resize = YArray == null ? true : YArray.Length == yArray.Length ? false : true; double[] newYArray = resize ? new double[yArray.Length] : YArray; for(int i = 0; i < yArray.Length; i++) { newYArray[i] = yArray[i]; } YArray = newYArray; } else { YArray = null; } } #endregion #region 업데이트하기 - Update(yArray) /// <summary> /// 업데이트하기 /// </summary> /// <param name="yArray">Y 배열</param> public void Update(double[] yArray) { Update(null, yArray); } #endregion #region 그리기 - Draw(graphics, reactangle, lowerX, upperX, lowerY, upperY) /// <summary> /// 그리기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="reactangle">사각형</param> /// <param name="lowerX">하한 X</param> /// <param name="upperX">상한 X</param> /// <param name="lowerY">하한 Y</param> /// <param name="upperY">상한 Y</param> public void Draw(Graphics graphics, Rectangle reactangle, double lowerX, double upperX, double lowerY, double upperY) { double[] xArray = XArray; double[] yArray = YArray; if(yArray == null) { return; } int length = xArray == null ? yArray.Length : yArray.Length > xArray.Length ? xArray.Length : yArray.Length; double endX = 0; double endY = 0; upperX = upperX == lowerX ? lowerX + 1 : upperX; upperY = upperY == lowerY ? lowerY + 1 : upperY; double xScale = reactangle.Width / (upperX - lowerX); double yScale = reactangle.Height / (upperY - lowerY); using(Pen pen = new Pen(LineColor, LineWidth)) { for(int i = 0; i < length; i++) { double startX = xArray == null ? i : xArray[i]; double startY = yArray[i]; startX = reactangle.X + ((startX - lowerX) * xScale); startY = reactangle.Y + reactangle.Height - ((startY - lowerY) * yScale); if(i != 0) { graphics.DrawLine(pen, (float)startX, (float)startY, (float)endX, (float)endY); } endX = startX; endY = startY; } } } #endregion } } |
▶ GraphControl.cs
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using System; using System.Collections.Generic; using System.Drawing; using System.Drawing.Imaging; using System.Windows.Forms; namespace TestProject { /// <summary> /// 그래프 컨트롤 /// </summary> public partial class GraphControl : UserControl { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// 텍스트 색상 /// </summary> public Color TextColor = Color.Black; /// <summary> /// 선 리스트 /// </summary> public List<Line> LineList = new List<Line>(); #endregion ////////////////////////////////////////////////////////////////////////////////////////// Protected #region Field /// <summary> /// 후면 버퍼 비트맵 /// </summary> protected Bitmap backBufferBitmap = null; /// <summary> /// 전면 버퍼 비트맵 /// </summary> protected Bitmap frontBufferBitmap = null; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 레전드 표시 여부 - ShowLegend /// <summary> /// 레전드 표시 여부 /// </summary> public bool ShowLegend { get; set; } #endregion #region 축 표시 여부 - ShowAxis /// <summary> /// 축 표시 여부 /// </summary> public bool ShowAxis { get; set; } #endregion #region 그리드 표시 여부 - ShowGrid /// <summary> /// 그리드 표시 여부 /// </summary> public bool ShowGrid { get; set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - GraphControl() /// <summary> /// 생성자 /// </summary> public GraphControl() { InitializeComponent(); ShowLegend = true; ShowAxis = true; ShowGrid = true; this.timer.Tick += timer_Tick; this.pictureBox.Resize += pictureBox_Resize; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 타이머 시작하기 - StartTimer() /// <summary> /// 타이머 시작하기 /// </summary> public void StartTimer() { this.timer.Enabled = true; } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 버퍼 크기 변경하기 - ResizeBuffer() /// <summary> /// 버퍼 크기 변경하기 /// </summary> protected void ResizeBuffer() { int width = this.pictureBox.Width; int height = this.pictureBox.Height; width = width < 10 ? 10 : width; height = height < 10 ? 10 : height; Bitmap previousBitmap = this.backBufferBitmap; if(previousBitmap == null) { this.backBufferBitmap = new Bitmap(width, height, PixelFormat.Format32bppArgb); } else { if((this.backBufferBitmap.Width != width) || (this.backBufferBitmap.Height != height)) { this.backBufferBitmap = new Bitmap(width, height, PixelFormat.Format32bppArgb); } } if(this.backBufferBitmap != previousBitmap) { if(previousBitmap != null) { previousBitmap.Dispose(); } } } #endregion #region 레전드 그리기 - DrawLegend(graphics, rectangle, legendList, colorList) /// <summary> /// 레전드 그리기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="rectangle">사각형</param> /// <param name="legendList">레전드 리스트</param> /// <param name="colorList">색상 리스트</param> protected void DrawLegend(Graphics graphics, Rectangle rectangle, List<string> legendList, List<Color> colorList) { int legentCount = legendList.Count; int rectangleX = rectangle.X; for(int i = 0; i < legendList.Count; i++) { int rectangleWidth = rectangle.X + (rectangle.Width * (i + 1) / legentCount); using(SolidBrush fillBrush = new SolidBrush(colorList[i])) { graphics.FillRectangle(fillBrush, rectangleX, rectangle.Y, rectangleWidth, rectangle.Height); } using(SolidBrush stringBrush = new SolidBrush(colorList[i].GetBrightness() > 0.5 ? Color.Black : Color.White)) { SizeF legendSize = graphics.MeasureString(legendList[i], Font); PointF legentPoint = new PointF ( (float)(0.5 * (rectangleWidth + rectangleX - legendSize.Width)), (float)(rectangle.Y + 0.5 * (legendSize.Height - legendSize.Height)) ); graphics.DrawString(legendList[i], Font, stringBrush, legentPoint); } rectangleX = rectangleWidth; } } #endregion #region 그래프 칠하기 - PaintGraph(graphics, width, height) /// <summary> /// 그래프 칠하기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="width">너비</param> /// <param name="height">높이</param> protected void PaintGraph(Graphics graphics, int width, int height) { double upperX = 0d; double lowerX = 0d; double upperY = 0d; double lowerY = 0d; bool foundFirst = false; List<string> legendList = new List<string>(); List<Color> colorList = new List<Color>(); for(int i = 0; i < LineList.Count; i++) { if(LineList[i] == null) { continue; } if(LineList[i].Visible == false) { continue; } if(!foundFirst) { upperX = LineList[i].MaximumX; lowerX = LineList[i].MinimumX; upperY = LineList[i].MaximumY; lowerY = LineList[i].MinimumY; foundFirst = true; } legendList.Add(LineList[i].Name ); colorList.Add (LineList[i].LineColor); upperX = upperX > LineList[i].MaximumX ? upperX : LineList[i].MaximumX; lowerX = lowerX < LineList[i].MinimumX ? lowerX : LineList[i].MinimumX; upperY = upperY > LineList[i].MaximumY ? upperY : LineList[i].MaximumY; lowerY = lowerY < LineList[i].MinimumY ? lowerY : LineList[i].MinimumY; } graphics.Clear(BackColor); Rectangle drawRectangle = new Rectangle(0, 0, width, height); if(ShowLegend) { int legendHeight = 5 + (int)graphics.MeasureString("AjtW", Font).Height; if(height - legendHeight > 10) { drawRectangle = new Rectangle(0, 0, width, height - legendHeight); Rectangle legendRectangle = new Rectangle(0, height - legendHeight + 2, width, legendHeight - 2); DrawLegend(graphics, legendRectangle, legendList, colorList); } } if(ShowAxis) { // 추후 추가 } if(!foundFirst) { return; } for(int i = 0; i < LineList.Count; i++) { if(LineList[i] == null) { continue; } if(LineList[i].Visible == false) { continue; } LineList[i].Draw(graphics, drawRectangle, lowerX, upperX, lowerY, upperY); } } #endregion #region 버퍼 교체하기 - SwapBuffer() /// <summary> /// 버퍼 교체하기 /// </summary> protected void SwapBuffer() { Bitmap temporaryBitmap = this.frontBufferBitmap; this.frontBufferBitmap = this.backBufferBitmap; this.backBufferBitmap = temporaryBitmap; } #endregion #region 그래프 그리기 - DrawGraph() /// <summary> /// 그래프 그리기 /// </summary> protected void DrawGraph() { ResizeBuffer(); using(Graphics graphics = Graphics.FromImage(this.backBufferBitmap)) { PaintGraph(graphics, this.backBufferBitmap.Width, this.backBufferBitmap.Height); } SwapBuffer(); this.pictureBox.Image = this.frontBufferBitmap; } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, EventArgs e) { DrawGraph(); } #endregion #region 픽처 박스 크기 조정시 처리하기 - pictureBox_Resize(sender, e) /// <summary> /// 픽처 박스 크기 조정시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void pictureBox_Resize(object sender, EventArgs e) { StartTimer(); } #endregion } } |
▶ Stack.cs
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using System; using System.Drawing; namespace TestProject { /// <summary> /// 스택 /// </summary> public class Stack { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Protected #region Field /// <summary> /// 색상 배열 /// </summary> protected static Color[] _colorArray; /// <summary> /// 감마 수정 배열 /// </summary> protected static int[] _gammaCorrectionArray = new int[1000]; #endregion ////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// 색상 배열 /// </summary> public Color[] ColorArray = null; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Static #region 생성자 - Stack() /// <summary> /// 생성자 /// </summary> static Stack() { Color[] colorArray = { Color.Black, Color.Blue, Color.Green, Color.GreenYellow, Color.Yellow, Color.Orange, Color.OrangeRed, Color.Red }; _colorArray = new Color[colorArray.Length * 100]; int k = 0; for(int i = 0; i < colorArray.Length - 1; i++) { for(int j = 0; j < 100; j++) { Color lowColor = colorArray[i]; Color highColor = colorArray[i + 1]; int r = ((lowColor.R * (100 - j)) + (highColor.R * j)) / 100; int g = ((lowColor.G * (100 - j)) + (highColor.G * j)) / 100; int b = ((lowColor.B * (100 - j)) + (highColor.B * j)) / 100; _colorArray[k++] = Color.FromArgb(r, g, b); } } float gammaCorrection = 0.3f; float gain = (float)((_colorArray.Length - 1) / Math.Pow(_gammaCorrectionArray.Length, gammaCorrection)); for(int i = 0; i < _gammaCorrectionArray.Length; i++) { int value = (int)(gain * Math.Pow((double)i, gammaCorrection)); value = value < 0 ? 0 : value > _colorArray.Length - 1 ? _colorArray.Length - 1 : value; _gammaCorrectionArray[i] = value; } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - Stack(valueArray, minimumValue, maximumValue) /// <summary> /// 생성자 /// </summary> /// <param name="valueArray">값 배열</param> /// <param name="maximumValue">최소 값</param> /// <param name="minimumValue">최대 값</param> public Stack(float[] valueArray, double minimumValue, double maximumValue) { float scale = (float)(_gammaCorrectionArray.Length / (maximumValue - minimumValue)); ColorArray = new Color[valueArray.Length / 2]; for(int i = 0; i < ColorArray.Length; i++) { int value = (int)((valueArray[i] - minimumValue) * scale); value = value < 0 ? 0 : value > _colorArray.Length - 1 ? _colorArray.Length - 1 : value; value = _gammaCorrectionArray[value]; ColorArray[i] = _colorArray[value]; } } #endregion } } |
▶ SoundVisualizer.cs
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using System; using System.Collections.Generic; using System.Drawing; using System.Drawing.Imaging; using System.Threading; using System.Windows.Forms; namespace TestProject { /// <summary> /// 사운드 시각화기 /// </summary> public partial class SoundVisualizer : UserControl { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Protected #region Field /// <summary> /// 종료 여부 /// </summary> protected bool closed = false; /// <summary> /// 후면 버퍼 비트맵 /// </summary> protected Bitmap backBufferBitmap = null; /// <summary> /// 전면 버퍼 비트맵 /// </summary> protected Bitmap frontBufferBitmap = null; /// <summary> /// 스택 리스트 /// </summary> protected List<Stack> stackList = new List<Stack>(); /// <summary> /// 스택 리스트 잠금 객체 /// </summary> protected object stackListLockObject = new object(); /// <summary> /// 최소 값 /// </summary> protected float minimumValue = 0; /// <summary> /// 최대 값 /// </summary> protected float maximumValue = 0; /// <summary> /// 값 배열 리스트 /// </summary> protected List<float[]> valueArrayList = new List<float[]>(); /// <summary> /// 스레드 잠금 객체 /// </summary> protected object threadLockObject = new object(); /// <summary> /// 작업 스레드 /// </summary> protected Thread workThread = null; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 스펙트럼 너비 - SpectralWidth /// <summary> /// 스펙트럼 너비 /// </summary> public int SpectralWidth { get; set; } #endregion #region FFT 데이터 표시 여부 - ShowFFT /// <summary> /// FFT 데이터 표시 여부 /// </summary> public bool ShowFFT { get; set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - SoundVisualizer() /// <summary> /// 생성자 /// </summary> public SoundVisualizer() { InitializeComponent(); ShowFFT = true; SpectralWidth = 256; Disposed += UserControl_Disposed; this.pictureBox.Resize += pictureBox_Resize; this.timer.Tick += timer_Tick; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 타이머 시작하기 - StartTimer() /// <summary> /// 타이머 시작하기 /// </summary> public void StartTimer() { this.timer.Enabled = true; } #endregion #region 데이터 추가하기 - AppendData(valueArray) /// <summary> /// 데이터 추가하기 /// </summary> /// <param name="valueArray">값</param> public void AppendData(float[] valueArray) { lock(this.threadLockObject) { this.valueArrayList.Add(valueArray); if(this.workThread == null) { this.workThread = new Thread(new ThreadStart(ProcessWorkThread)); this.workThread.Name = "Sound visualization work thread."; this.workThread.Start(); } } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Protected //////////////////////////////////////////////////////////////////////////////// Event #region 사용자 컨트롤 리소스 해제시 처리하기 - UserControl_Disposed(sender, e) /// <summary> /// 사용자 컨트롤 리소스 해제시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> protected void UserControl_Disposed(object sender, EventArgs e) { this.closed = true; } #endregion #region 픽처 박스 크기 조정시 처리하기 - pictureBox_Resize(sender, e) /// <summary> /// 픽처 박스 크기 조정시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> protected void pictureBox_Resize(object sender, EventArgs e) { this.timer.Enabled = true; } #endregion #region 타이머 틱 처리하기 - timer_Tick(object sender, EventArgs e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, EventArgs e) { Redraw(); } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 버퍼 크기 변경하기 - ResizeBuffer() /// <summary> /// 버퍼 크기 변경하기 /// </summary> protected void ResizeBuffer() { int width = this.pictureBox.Width; int height = SpectralWidth / 2; width = width < 10 ? 10 : width; height = height < 10 ? 10 : height; Bitmap previousButmap = this.backBufferBitmap; if(previousButmap == null) { this.backBufferBitmap = new Bitmap(width, height, PixelFormat.Format32bppArgb); } else { if((this.backBufferBitmap.Width != width) || (this.backBufferBitmap.Height != height)) { this.backBufferBitmap = new Bitmap(width, height, PixelFormat.Format32bppArgb); } } if(this.backBufferBitmap != previousButmap) { if(previousButmap != null) { previousButmap.Dispose(); } } } #endregion #region 그래프 칠하기 - PaintGraph(graphics, bitmap, width, height) /// <summary> /// 그래프 칠하기 /// </summary> /// <param name="graphics"></param> /// <param name="bitmap">비트맵</param> /// <param name="width">너비</param> /// <param name="height">높이</param> protected void PaintGraph(Graphics graphics, Bitmap bitmap, int width, int height) { List<Stack> stackList = new List<Stack>(); lock(this.stackListLockObject) { if(this.stackList.Count > 1) { stackList.AddRange(this.stackList); this.stackList.Clear(); } } if(this.frontBufferBitmap == null) { graphics.Clear(Color.Black); } else { graphics.DrawImage(this.frontBufferBitmap, new Point(stackList.Count, 0)); if(stackList.Count < 1) { return; } } for(int i = 0; i < stackList.Count; i++) { int colorArrayLength = stackList[0].ColorArray.Length; for(int j = 0; j < height; j++) { bitmap.SetPixel(i, colorArrayLength - j - 1, stackList[stackList.Count - 1 - i].ColorArray[j]); } } } #endregion #region 버퍼 교체하기 - SwapBuffer() /// <summary> /// 버퍼 교체하기 /// </summary> protected void SwapBuffer() { Bitmap temporaryBitmap = this.frontBufferBitmap; this.frontBufferBitmap = this.backBufferBitmap; this.backBufferBitmap = temporaryBitmap; } #endregion #region 다시 그리기 - Redraw() /// <summary> /// 다시 그리기 /// </summary> protected void Redraw() { ResizeBuffer(); using(Graphics graphics = Graphics.FromImage(this.backBufferBitmap)) { PaintGraph(graphics, this.backBufferBitmap, this.backBufferBitmap.Width, this.backBufferBitmap.Height); } SwapBuffer(); this.pictureBox.Image = this.frontBufferBitmap; } #endregion #region 스택 리스트 추가하기 - AddStackList(sourceValueArray) /// <summary> /// 스택 리스트 추가하기 /// </summary> /// <param name="sourceValueArray">소스 값 배열</param> protected void AddStackList(float[] sourceValueArray) { List<Stack> stackList = new List<Stack>(); int k = 0; float[] temporarValueArray = new float[SpectralWidth]; float[] fftArray = new float[temporarValueArray.Length]; int nextK = 0; while(k <= sourceValueArray.Length - temporarValueArray.Length) { nextK = k + (temporarValueArray.Length >> 3); for(int i = 0; i < temporarValueArray.Length; i++) { temporarValueArray[i] = sourceValueArray[k++]; } FFT.ComputeForwardFFT(temporarValueArray, fftArray); float[] targetValueArray = ShowFFT ? fftArray : temporarValueArray; float minmiumValue = targetValueArray[0]; float maximumValue = targetValueArray[0]; for(int i = 0; i < targetValueArray.Length; i++) { minmiumValue = minmiumValue < targetValueArray[i] ? minmiumValue : targetValueArray[i]; maximumValue = maximumValue > targetValueArray[i] ? maximumValue : targetValueArray[i]; } minmiumValue = float.IsNaN(minmiumValue) ? this.minimumValue : minmiumValue; maximumValue = float.IsNaN(maximumValue) ? this.maximumValue : maximumValue; minmiumValue = float.IsInfinity(minmiumValue) ? this.minimumValue : minmiumValue; maximumValue = float.IsInfinity(maximumValue) ? this.maximumValue : maximumValue; this.minimumValue = (255 * this.minimumValue + minmiumValue) / 256; this.maximumValue = (255 * this.maximumValue + maximumValue) / 256; stackList.Add(new Stack(targetValueArray, this.minimumValue, this.maximumValue)); k = nextK; } lock(this.stackListLockObject) { this.stackList.AddRange(stackList); } } #endregion #region 작업 스레드 처리하기 - ProcessWorkThread() /// <summary> /// 작업 스레드 처리하기 /// </summary> protected void ProcessWorkThread() { float[] lastValueArray = null; while(this.closed == false) { Thread.Sleep(100); float[] valueArray = null; lock(this.threadLockObject) { if(this.valueArrayList.Count > 0) { valueArray = this.valueArrayList[0]; this.valueArrayList.RemoveAt(0); } } if(valueArray != null) { if(lastValueArray != null) { int spectralWidth = SpectralWidth; float[] temporaryValueArray = new float[(int)(spectralWidth * 1.75f)]; int k = 0; int swo = spectralWidth - (spectralWidth >> 3); int lastValueArrayStart = lastValueArray.Length - swo; lastValueArrayStart = lastValueArrayStart < 0 ? 0 : lastValueArrayStart; for(int i = lastValueArrayStart; i < lastValueArray.Length; i++) { temporaryValueArray[k++] = lastValueArray[i]; } for(int i = 0; i < swo && k < temporaryValueArray.Length && i < valueArray.Length; i++) { temporaryValueArray[k++] = valueArray[i]; } AddStackList(temporaryValueArray); } AddStackList(valueArray); lastValueArray = valueArray; } } } #endregion } } |
▶ SoundSource.cs
|
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using Microsoft.DirectX.DirectSound; using Microsoft.Win32.SafeHandles; using System; using System.Collections.Generic; using System.Threading; namespace TestProject { /// <summary> /// 사운드 소스 /// </summary> public class SoundSource : IDisposable { //////////////////////////////////////////////////////////////////////////////////////////////////// Delegate ////////////////////////////////////////////////////////////////////////////////////////// Public #region 데이터 처리하기 대리자 - ProcessDataDelegate(valueArray) /// <summary> /// 데이터 처리하기 대리자 /// </summary> /// <param name="valueArray">값 배열</param> public delegate void ProcessDataDelegate(float[] valueArray); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Event ////////////////////////////////////////////////////////////////////////////////////////// Public #region 데이터 처리시 이벤트 - ProcessData /// <summary> /// 데이터 처리시 이벤트 /// </summary> public event ProcessDataDelegate ProcessData; #endregion #region FFT 데이터 처리시 이벤트 - ProcessFFTData /// <summary> /// FFT 데이터 처리시 이벤트 /// </summary> public event ProcessDataDelegate ProcessFFTData; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Protected #region Field /// <summary> /// 리소스 해제 잠금 객체 /// </summary> protected object disposeLock = new object(); /// <summary> /// 리소스 해제 여부 /// </summary> protected bool disposed = false; /// <summary> /// 캡처 /// </summary> protected Capture capture = null; /// <summary> /// 캡처 버퍼 /// </summary> protected CaptureBuffer captureBuffer = null; /// <summary> /// 캡처 스레드 /// </summary> protected Thread captureThread = null; /// <summary> /// 캡처 버퍼 길이 /// </summary> protected int captureBufferLength = 0; /// <summary> /// 통지 /// </summary> protected Notify notify; /// <summary> /// 버퍼 위치 이벤트 /// </summary> protected AutoResetEvent bufferPositionEvent = null; /// <summary> /// 버퍼 위치 이벤트 핸들 /// </summary> protected SafeWaitHandle bufferPositionEventHandle = null; /// <summary> /// 스레드 종료 이벤트 /// </summary> protected ManualResetEvent threadTerminateEvent = null; #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 초 단위 버퍼 시간 /// </summary> private const int BUFFER_TIME_IN_SECOND = 5; /// <summary> /// 초 단위 통지 포인트 /// </summary> private const int NOTIFICATION_POINT_IN_SECOND = 2; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region GUID - GUID /// <summary> /// GUID /// </summary> public Guid GUID { get; set; } #endregion #region 설명 - Description /// <summary> /// 설명 /// </summary> public string Description { get; set; } #endregion #region 디폴트 여부 - IsDefault /// <summary> /// 디폴트 여부 /// </summary> public bool IsDefault { get { return GUID == Guid.Empty; } } #endregion #region 캡처 여부 - IsCapturing /// <summary> /// 캡처 여부 /// </summary> public bool IsCapturing { get; protected set; } #endregion #region 샘플 비율 (단위 : HZ) - SampleRate /// <summary> /// 샘플 비율 (단위 : HZ) /// </summary> public int SampleRate { get; set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - SoundSource() /// <summary> /// 생성자 /// </summary> public SoundSource() { CaptureDevicesCollection collection = new CaptureDevicesCollection(); for(int i = 0; i < collection.Count; i++) { if(collection[i].DriverGuid == Guid.Empty) { GUID = collection[i].DriverGuid; Description = collection[i].Description; break; } } this.bufferPositionEvent = new AutoResetEvent(false); this.bufferPositionEventHandle = this.bufferPositionEvent.SafeWaitHandle; this.threadTerminateEvent = new ManualResetEvent(true); } #endregion #region 생성자 - SoundSource(guid, description) /// <summary> /// 생성자 /// </summary> /// <param name="guid">GUID</param> /// <param name="description">설명</param> public SoundSource(Guid guid, string description) { GUID = guid; Description = description; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Destructor #region 소멸자 - ~SoundSource() /// <summary> /// 소멸자 /// </summary> ~SoundSource() { Dispose(false); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 사운드 소스 리스트 구하기 - GetSoundSourceList() /// <summary> /// 사운드 소스 리스트 구하기 /// </summary> /// <returns>사운드 소스 리스트</returns> public static List<SoundSource> GetSoundSourceList() { CaptureDevicesCollection collection = new CaptureDevicesCollection(); List<SoundSource> sourceSourceList = new List<SoundSource>(); foreach(DeviceInformation deviceInformation in collection) { sourceSourceList.Add(new SoundSource(deviceInformation.DriverGuid, deviceInformation.Description)); } return sourceSourceList; } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Instance //////////////////////////////////////////////////////////////////////////////// Public #region 시작하기 - Start() /// <summary> /// 시작하기 /// </summary> public void Start() { if(IsCapturing) { return; } IsCapturing = true; this.capture = new Capture(GUID); WaveFormat waveFormat = new WaveFormat(); waveFormat.Channels = (short)this.capture.Caps.Channels; waveFormat.BitsPerSample = 16; waveFormat.SamplesPerSecond = 22000; waveFormat.FormatTag = WaveFormatTag.Pcm; waveFormat.BlockAlign = (short)((waveFormat.Channels * waveFormat.BitsPerSample + 7) / 8); waveFormat.AverageBytesPerSecond = waveFormat.BlockAlign * waveFormat.SamplesPerSecond; this.captureBufferLength = waveFormat.AverageBytesPerSecond * BUFFER_TIME_IN_SECOND; CaptureBufferDescription captureBufferDescription = new CaptureBufferDescription(); captureBufferDescription.Format = waveFormat; captureBufferDescription.BufferBytes = this.captureBufferLength; this.captureBuffer = new CaptureBuffer(captureBufferDescription, this.capture); int waitHandleCount = BUFFER_TIME_IN_SECOND * NOTIFICATION_POINT_IN_SECOND; BufferPositionNotify[] bufferPositionNotifyArray = new BufferPositionNotify[waitHandleCount]; for(int i = 0; i < waitHandleCount; i++) { BufferPositionNotify bufferPositionNotify = new BufferPositionNotify(); bufferPositionNotify.Offset = (i + 1) * this.captureBufferLength / bufferPositionNotifyArray.Length - 1; bufferPositionNotify.EventNotifyHandle = this.bufferPositionEventHandle.DangerousGetHandle(); bufferPositionNotifyArray[i] = bufferPositionNotify; } this.notify = new Notify(this.captureBuffer); this.notify.SetNotificationPositions(bufferPositionNotifyArray); this.threadTerminateEvent.Reset(); this.captureThread = new Thread(new ThreadStart(ProcessCaptureThread)); this.captureThread.Name = "Sound capture"; this.captureThread.Start(); } #endregion #region 중단하기 - Stop() /// <summary> /// 중단하기 /// </summary> public void Stop() { if(IsCapturing) { IsCapturing = false; this.threadTerminateEvent.Set(); this.captureThread.Join(); this.notify.Dispose(); this.captureBuffer.Dispose(); this.capture.Dispose(); } } #endregion #region 리소스 해제하기 - Dispose(disposing) /// <summary> /// 리소스 해제하기 /// </summary> /// <param name="disposing">리소스 해제 여부</param> public void Dispose(bool disposing) { lock(this.disposeLock) { if(this.disposed) { return; } this.disposed = true; } GC.SuppressFinalize(this); if(IsCapturing) { Stop(); } if(this.bufferPositionEventHandle != null) { this.bufferPositionEventHandle.Dispose(); } if(this.bufferPositionEvent != null) { this.bufferPositionEvent.Close(); } if(this.threadTerminateEvent != null) { this.threadTerminateEvent.Close(); } } #endregion #region 리소스 해제하기 - IDisposable.Dispose() /// <summary> /// 리소스 해제하기 /// </summary> void IDisposable.Dispose() { Dispose(true); } #endregion //////////////////////////////////////////////////////////////////////////////// Private #region 값 처리하기 - ProcessValue(valueArray) /// <summary> /// 값 처리하기 /// </summary> /// <param name="valueArray">값 배열</param> protected void ProcessValue(short[] valueArray) { ProcessDataDelegate processData = ProcessData; ProcessDataDelegate processFFTData = ProcessFFTData; if((processData == null) && (processFFTData == null)) { return; } int size = 2; while(size < valueArray.Length) { size *= 2; } float[] xfArray = new float[size]; float[] xtArray = new float[valueArray.Length]; for(int i = 0; i < valueArray.Length; i++) { float value = (float)valueArray[i]; xfArray[i] = value; xtArray[i] = value; } for(int i = valueArray.Length; i < size; i++) { xfArray[i] = 0; } if(processData != null) { processData(xtArray); } if(processFFTData != null) { float[] fftArray = new float[xfArray.Length]; FFT.ComputeForwardFFT(xfArray, fftArray); processFFTData(fftArray); } } #endregion #region 캡처 스레드 처리하기 - ProcessCaptureThread() /// <summary> /// 캡처 스레드 처리하기 /// </summary> private void ProcessCaptureThread() { this.captureBuffer.Start(true); try { int nextCapturePosition = 0; WaitHandle[] handleArray = new WaitHandle[] {this.threadTerminateEvent, this.bufferPositionEvent }; while(WaitHandle.WaitAny(handleArray) > 0) { int capturePosition; int readPosition; this.captureBuffer.GetCurrentPosition(out capturePosition, out readPosition); int lockSize = readPosition - nextCapturePosition; if(lockSize < 0) { lockSize += this.captureBufferLength; } if((lockSize & 1) != 0) { lockSize--; } int itemCount = lockSize >> 1; short[] valueArray = (short[])this.captureBuffer.Read ( nextCapturePosition, typeof(short), LockFlag.None, itemCount ); ProcessValue(valueArray); nextCapturePosition = (nextCapturePosition + lockSize) % this.captureBufferLength; } } catch(Exception exception) { Console.WriteLine(exception.Message); } finally { this.captureBuffer.Stop(); } } #endregion } } |
▶ SoundPlayback.cs
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using Microsoft.DirectX.DirectSound; using System; using System.IO; using System.Windows.Forms; namespace TestProject { /// <summary> /// 사운드 재생 /// </summary> public class SoundPlayback : IDisposable { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Protected #region Field /// <summary> /// 장치 /// </summary> protected Device device = null; /// <summary> /// 2차 버퍼 /// </summary> protected SecondaryBuffer secondaryBuffer = null; /// <summary> /// 위치 /// </summary> protected int location = 0; /// <summary> /// 리소스 해제 여부 /// </summary> protected bool disposed = false; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Destructor #region 소멸자 - ~SoundPlayback() /// <summary> /// 소멸자 /// </summary> ~SoundPlayback() { Dispose(false); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 셋업하기 - Setup(ownerControl, filePath) /// <summary> /// 셋업하기 /// </summary> /// <param name="ownerControl">소유자 컨트롤</param> /// <param name="filePath">파일 경로</param> public void Setup(Control ownerControl, string filePath) { this.device = new Device(); this.device.SetCooperativeLevel(ownerControl, CooperativeLevel.Priority); this.secondaryBuffer = new SecondaryBuffer(filePath, this.device); this.secondaryBuffer.SetCurrentPosition(0); } #endregion #region 데이터 구하기 - GetData(valueArray) /// <summary> /// 데이터 구하기 /// </summary> /// <param name="valueArray">값 배열</param> public bool GetData(float[] valueArray) { try { int bitCountPerSample = this.secondaryBuffer.Format.BitsPerSample; byte[] byteArray = new byte[valueArray.Length * bitCountPerSample / 8]; MemoryStream stream = new MemoryStream(byteArray); stream.Position = 0; this.secondaryBuffer.Read(this.location, stream, valueArray.Length, LockFlag.None); this.location += valueArray.Length; int k = 0; if(bitCountPerSample == 16) { for(int i = 0; i < valueArray.Length; i++) { int lower = byteArray[k++]; int upper = byteArray[k++]; valueArray[i] = (float)(lower + (upper * 256)); } } else { for(int i = 0; i < valueArray.Length; i++) { valueArray[i] = (float)(byteArray[k++]); } } } catch(Exception) { return false; } return true; } #endregion #region 리소스 해제하기 - Dispose(disposing) /// <summary> /// 리소스 해제하기 /// </summary> /// <param name="disposing">리소스 해제 여부</param> public void Dispose(bool disposing) { if(this.disposed) { return; } this.disposed = true; GC.SuppressFinalize(this); this.secondaryBuffer.Dispose(); this.device.Dispose(); } #endregion #region 리소스 해제하기 - IDisposable.Dispose() /// <summary> /// 리소스 해제하기 /// </summary> void IDisposable.Dispose() { Dispose(true); } #endregion } } |
▶ MainForm.cs
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using System; using System.ComponentModel; using System.Windows.Forms; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Protected #region Field /// <summary> /// 사운드 소스 /// </summary> protected SoundSource soundSource = null; /// <summary> /// 사운드 재생 /// </summary> protected SoundPlayback soundPlayback = null; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.listenButton.Click += listenButton_Click; this.fileButton.Click += fileButton_Click; this.timer.Tick += timer_Tick; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 종료시 처리하기 - OnClosing(e) /// <summary> /// 종료시 처리하기 /// </summary> /// <param name="e">이벤트 인자</param> protected override void OnClosing(CancelEventArgs e) { if(this.soundSource != null) { this.soundSource.Dispose(true); } if(this.soundPlayback != null) { this.soundPlayback.Dispose(true); } } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 사운드 소스 데이터 처리하기 - soundSource_ProcessData(valueArray) /// <summary> /// 사운드 소스 데이터 처리하기 /// </summary> /// <param name="valueArray">값 배열</param> private void soundSource_ProcessData(float[] valueArray) { this.soundVisualizer.AppendData(valueArray); this.soundVisualizer.StartTimer(); } #endregion #region 사운드 소스 FFT 데이터 처리하기 - soundSource_ProcessFFTData(valueArray) /// <summary> /// 사운드 소스 FFT 데이터 처리하기 /// </summary> /// <param name="valueArray">값 배열</param> private void soundSource_ProcessFFTData(float[] valueArray) { float[] temporaryValueArray = new float[valueArray.Length / 2]; for(int i = 0; i < temporaryValueArray.Length; i++) { temporaryValueArray[i] = valueArray[i]; } if(this.graphControl.LineList.Count < 1) { this.graphControl.LineList.Add(new Line()); } this.graphControl.LineList[0].Update(temporaryValueArray); this.graphControl.StartTimer(); } #endregion #region 실시간 청취 버튼 클릭시 처리하기 - listenButton_Click(sender, e) /// <summary> /// 실시간 청취 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void listenButton_Click(object sender, EventArgs e) { if(this.soundSource != null) { if(this.soundSource.IsCapturing) { this.soundSource.Stop(); } else { this.soundSource.Start(); } } else { this.soundSource = new SoundSource(); this.soundSource.ProcessData += soundSource_ProcessData; this.soundSource.ProcessFFTData += soundSource_ProcessFFTData; this.soundSource.Start(); } } #endregion #region 파일 분석 버튼 클릭시 처리하기 - fileButton_Click(sender, e) /// <summary> /// 파일 분석 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void fileButton_Click(object sender, EventArgs e) { if(this.soundPlayback == null) { this.soundPlayback = new SoundPlayback(); } DialogResult result = this.openFileDialog.ShowDialog(); if(result != DialogResult.OK) { return; } this.soundPlayback.Setup(this, this.openFileDialog.FileName); this.timer.Enabled = true; } #endregion #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, EventArgs e) { float[] valueArray = new float[1024]; if(this.soundPlayback.GetData(valueArray) == false) { this.timer.Enabled = false; return; } soundSource_ProcessData(valueArray); float[] fftArray = new float[valueArray.Length]; FFT.ComputeForwardFFT(valueArray, fftArray); soundSource_ProcessFFTData(fftArray); soundSource_ProcessData(fftArray); } #endregion } } |
※ 32비트 버전으로 실행해야 한다.
