93 lines
2.7 KiB
C#
93 lines
2.7 KiB
C#
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// This example will show how to override file access with irrKlang.
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// This is useful if you want to read sounds from other sources than
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// just files, for example from custom internet streams or
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// an own encypted archive format.
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using System;
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using System.IO;
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using IrrKlang;
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namespace CSharp._04._OverrideFileAccess
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{
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class Class1
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{
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// To start, we need to implement the class IFileFactory, which irrKlang uses
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// to open files. The interface consists only of one single method named
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// openFile(String filename). In this method, we create return
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// our own file access class and return it:
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class MyIrrKlangFileFactory : IrrKlang.IFileFactory
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{
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public System.IO.Stream openFile(String filename)
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{
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// we simply could return an opened FileStream here, but to demonstrate
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// overriding, we return our own filestream implementation
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return new MyFileStream(filename);
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}
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}
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// an own implementation of FileStream to overwrite read access to files
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public class MyFileStream : System.IO.FileStream
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{
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public MyFileStream(String filename) : base(filename, FileMode.Open)
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{
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}
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public override int Read(byte[] array, int offset, int count)
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{
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System.Console.Out.WriteLine("MyFileStream read bytes: " + count);
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return base.Read(array, offset, count);
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}
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public override long Seek(long offset, SeekOrigin origin)
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{
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System.Console.Out.WriteLine("MyFileStream seeked to: " + offset);
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return base.Seek(offset, origin);
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}
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};
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// The main work is done, the only thing missing is to start up the
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// sound engine and tell it to use the created FileFactory for file access:
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// irrKlang 3D sound engine example 04,
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// demonstrating how to override file access of irrKlang
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[STAThread]
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static void Main(string[] args)
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{
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// start the sound engine with default parameters
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ISoundEngine engine = new ISoundEngine();
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// create an instance of the file factory and let
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// irrKlang know about it.
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MyIrrKlangFileFactory myfactory = new MyIrrKlangFileFactory();
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engine.AddFileFactory(myfactory);
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// that's it, play some sounds with our overriden
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// file access methods:
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// now play some sounds until user presses 'q'
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Console.Out.WriteLine("\nDemonstrating file access overriding.");
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Console.Out.WriteLine("Press any key to play some sound, press ESCAPE to quit.");
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_getch();
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engine.Play2D("../../media/getout.ogg", true);
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do
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{
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// play some wave sound
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engine.Play2D("../../media/bell.wav");
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}
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while(_getch() != 27); // user pressed eskape key to cancel
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}
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// some simple function for reading keys from the console
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[System.Runtime.InteropServices.DllImport("msvcrt")]
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static extern int _getch();
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}
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}
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