mcs/class/System/System.Media/Win32SoundPlayer.cs

   1 //
   2 // Mono.Audio.Win32SoundPlayer
   3 //
   4 // Authors:
   5 //    Gert Driesen (drieseng@users.sourceforge.net)
   6 //
   7 // Copyright (C) 2007 Gert Driesen
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using System.IO;
  31 using System.Runtime.InteropServices;
  32
  33 namespace Mono.Audio
  34 {
  35         internal class Win32SoundPlayer : IDisposable
  36         {
  37                 public Win32SoundPlayer (Stream s)
  38                 {
  39                         if (s != null) {
  40                                 _buffer = new byte [s.Length];
  41                                 s.Read (_buffer, 0, _buffer.Length);
  42                         } else {
  43                                 _buffer = new byte [0];
  44                         }
  45                 }
  46
  47                 [DllImport ("winmm.dll", SetLastError = true)]
  48                 static extern bool PlaySound (
  49                         byte [] ptrToSound,
  50                         UIntPtr hmod,
  51                         SoundFlags flags);
  52
  53                 public Stream Stream {
  54                         set {
  55                                 Stop ();
  56                                 if (value != null) {
  57                                         _buffer = new byte [value.Length];
  58                                         value.Read (_buffer, 0, _buffer.Length);
  59                                 } else {
  60                                         _buffer = new byte [0];
  61                                 }
  62                         }
  63                 }
  64
  65                 public void Dispose ()
  66                 {
  67                         Dispose (true);
  68                         GC.SuppressFinalize (this);
  69                 }
  70
  71                 ~Win32SoundPlayer ()
  72                 {
  73                         Dispose (false);
  74                 }
  75
  76                 protected virtual void Dispose (bool disposing)
  77                 {
  78                         if (!_disposed) {
  79                                 Stop ();
  80                                 _disposed = true;
  81                         }
  82                 }
  83
  84                 public void Play ()
  85                 {
  86                         PlaySound (_buffer, UIntPtr.Zero, SoundFlags.SND_ASYNC |
  87                                 SoundFlags.SND_MEMORY);
  88                 }
  89
  90                 public void PlayLooping ()
  91                 {
  92                         PlaySound (_buffer, UIntPtr.Zero, SoundFlags.SND_MEMORY |
  93                                 SoundFlags.SND_LOOP | SoundFlags.SND_ASYNC);
  94                 }
  95
  96                 public void PlaySync ()
  97                 {
  98                         PlaySound (_buffer, UIntPtr.Zero, SoundFlags.SND_SYNC |
  99                                 SoundFlags.SND_MEMORY | SoundFlags.SND_NODEFAULT);
 100                 }
 101
 102                 public void Stop ()
 103                 {
 104                         PlaySound ((byte []) null, UIntPtr.Zero, SoundFlags.SND_SYNC);
 105                 }
 106
 107                 enum SoundFlags : uint
 108                 {
 109                         SND_SYNC = 0x0000,              // play synchronously
 110                         SND_ASYNC = 0x0001,             // play asynchronously
 111                         SND_NODEFAULT = 0x0002,         // do not play default sound if sound not found
 112                         SND_MEMORY = 0x0004,            // pszSound is loaded in memory
 113                         SND_LOOP = 0x0008,              // play repeatedly until next PlaySound
 114                         SND_FILENAME = 0x00020000,      // pszSound is a file name
 115                 }
 116
 117                 private byte [] _buffer;
 118                 private bool _disposed;
 119         }
 120 }
 121