105 lines
3.0 KiB
C#
Executable File
105 lines
3.0 KiB
C#
Executable File
using System;
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using System.IO;
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using System.Text;
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namespace Luski.net.Sound
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{
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internal class WaveFile
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{
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internal WaveFile()
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{
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}
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internal const int WAVE_FORMAT_PCM = 1;
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internal static WaveFileHeader Read(string fileName)
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{
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WaveFileHeader header = ReadHeader(fileName);
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return header;
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}
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private static WaveFileHeader ReadHeader(string fileName)
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{
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WaveFileHeader header = new();
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if (File.Exists(fileName))
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{
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FileStream fs = new(fileName, FileMode.Open, FileAccess.Read);
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BinaryReader rd = new(fs, Encoding.UTF8);
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if (fs.CanRead)
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{
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header.RIFF = rd.ReadChars(4);
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header.RiffSize = (uint)rd.ReadInt32();
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header.RiffFormat = rd.ReadChars(4);
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header.FMT = rd.ReadChars(4);
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header.FMTSize = (uint)rd.ReadInt32();
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header.FMTPos = fs.Position;
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header.AudioFormat = rd.ReadInt16();
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header.Channels = rd.ReadInt16();
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header.SamplesPerSecond = (uint)rd.ReadInt32();
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header.BytesPerSecond = (uint)rd.ReadInt32();
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header.BlockAlign = rd.ReadInt16();
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header.BitsPerSample = rd.ReadInt16();
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fs.Seek(header.FMTPos + header.FMTSize, SeekOrigin.Begin);
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header.DATA = rd.ReadChars(4);
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header.DATASize = (uint)rd.ReadInt32();
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header.DATAPos = (int)fs.Position;
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if (new string(header.DATA).ToUpper() != "DATA")
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{
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uint DataChunkSize = header.DATASize + 8;
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fs.Seek(DataChunkSize, SeekOrigin.Current);
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header.DATASize = (uint)(fs.Length - header.DATAPos - DataChunkSize);
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}
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if (header.DATASize <= fs.Length - header.DATAPos)
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{
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header.Payload = rd.ReadBytes((int)header.DATASize);
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}
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}
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rd.Close();
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fs.Close();
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}
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return header;
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}
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}
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internal class WaveFileHeader
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{
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internal WaveFileHeader()
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{
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}
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internal char[] RIFF = new char[4];
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internal uint RiffSize = 8;
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internal char[] RiffFormat = new char[4];
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internal char[] FMT = new char[4];
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internal uint FMTSize = 16;
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internal short AudioFormat;
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internal short Channels;
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internal uint SamplesPerSecond;
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internal uint BytesPerSecond;
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internal short BlockAlign;
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internal short BitsPerSample;
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internal char[] DATA = new char[4];
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internal uint DATASize;
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internal byte[] Payload = Array.Empty<byte>();
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internal int DATAPos = 44;
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internal long FMTPos = 20;
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}
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}
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