WaveFile-Klasse

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace _3dSoundSimulation {
    /// <summary>
    /// An audio file in 16-bit mono/stereo RIFF WAVE data format.
    /// </summary>
    public class WaveFile {
        protected string _Filename;

        protected byte[] _RawContent;
        protected uint _RawLength;

        protected uint _Channels;
        protected uint _SampleCount;

        public WaveFile( string Filename ) {
            this._Filename = Filename;
            _RawContent = System.IO.File.ReadAllBytes( Filename );
            _RawLength = _RawContent[0x28] | ( uint )( _RawContent[0x29] << 8 ) | ( uint )( _RawContent[0x2a] << 16 ) | ( uint )( _RawContent[0x2b] << 24 );
            _Channels = ( uint )( _RawContent[0x16] | ( _RawContent[0x17] << 8 ) );
            _SampleCount = _RawLength / ( _Channels * 2 );
        }

        /// <summary>
        /// Returns the sample at the specified location.
        /// </summary>
        /// <param name="Number">The Sample# to retrieve.</param>
        /// <returns></returns>
        public short[] GetSample( uint Number ) {
            if ( Number >= _SampleCount ) {
                return null;
            }
            short[] Result = new short[_Channels];
            uint Pointer = 0x2c + ( _Channels * 2 ) * Number;
            for ( int i = 0; i < _Channels; Pointer +=2, i++ ) {
                Result[i] = ( short )( _RawContent[Pointer] | ( _RawContent[Pointer + 1] << 8 ) );
            }
            return Result;
        }

        /// <summary>
        /// The amount of samples in the file.
        /// This property is read-only.
        /// </summary>
        public uint SampleCount {
            get {
                return _SampleCount;
            }
        }

        /// <summary>
        /// The amount of channels in the file.
        /// This property is read-only.
        /// </summary>
        public uint Channels {
            get {
                return _Channels;
            }
        }

        /// <summary>
        /// The path to the file.
        /// This property is read-only.
        /// </summary>
        public string Filename {
            get {
                return System.IO.Path.GetFullPath( _Filename );
            }
        }

    }
}