mcs/class/System/System.Media/SoundPlayer.cs

   1 //
   2 // System.Media.SoundPlayer
   3 //
   4 // Authors:
   5 //    Paolo Molaro (lupus@ximian.com)
   6 //
   7 // Copyright (C) 2006 Novell, Inc (http://www.novell.com)
   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 using System;
  29 using System.IO;
  30 using System.Threading;
  31 using System.Runtime.Serialization;
  32 using System.ComponentModel;
  33 using Mono.Audio;
  34
  35 namespace System.Media {
  36
  37         [Serializable]
  38         [ToolboxItem (false)]
  39         public class SoundPlayer: Component, ISerializable {
  40
  41                 string sound_location;
  42                 Stream audiostream;
  43                 object tag = String.Empty;
  44                 MemoryStream mstream;
  45                 bool load_completed;
  46                 int load_timeout = 10000;
  47
  48                 #region Only used for Alsa implementation
  49                 AudioDevice adev;
  50                 AudioData adata;
  51                 bool stopped;
  52                 #endregion
  53
  54                 #region Only used for Win32 implementation
  55                 Win32SoundPlayer win32_player;
  56                 #endregion
  57
  58                 static readonly bool use_win32_player;
  59
  60                 static SoundPlayer ()
  61                 {
  62                         use_win32_player = (Environment.OSVersion.Platform != PlatformID.Unix);
  63                 }
  64
  65                 public SoundPlayer ()
  66                 {
  67                         sound_location = String.Empty;
  68                 }
  69
  70                 public SoundPlayer (Stream stream): this ()
  71                 {
  72                         audiostream = stream;
  73                 }
  74
  75                 public SoundPlayer (string soundLocation): this ()
  76                 {
  77                         if (soundLocation == null)
  78                                 throw new ArgumentNullException ("soundLocation");
  79                         sound_location = soundLocation;
  80                 }
  81
  82                 protected SoundPlayer (SerializationInfo serializationInfo, StreamingContext context): this ()
  83                 {
  84                         throw new NotImplementedException ();
  85                 }
  86
  87                 void LoadFromStream (Stream s)
  88                 {
  89                         mstream = new MemoryStream ();
  90                         byte[] buf = new byte [4096];
  91                         int count;
  92                         while ((count = s.Read (buf, 0, 4096)) > 0) {
  93                                 mstream.Write (buf, 0, count);
  94                         }
  95                         mstream.Position = 0;
  96                 }
  97
  98                 void LoadFromUri (string location)
  99                 {
 100                         mstream = null;
 101                         Stream data = null;
 102                         if (string.IsNullOrEmpty (location))
 103                                 return;
 104
 105                         if(File.Exists(location))
 106                                 data = new FileStream(location, FileMode.Open, FileAccess.Read, FileShare.Read);
 107                         else {
 108                                 System.Net.WebRequest request = System.Net.WebRequest.Create(location);
 109                                 data = request.GetResponse().GetResponseStream();
 110                         }
 111
 112                         using (data)
 113                                 LoadFromStream (data);
 114                 }
 115
 116                 public void Load ()
 117                 {
 118                         // can this be reused to load the same file again without re-setting the location?
 119                         if (load_completed)
 120                                 return;
 121                         if (audiostream != null) {
 122                                 LoadFromStream (audiostream);
 123                         } else {
 124                                 LoadFromUri (sound_location);
 125                         }
 126
 127                         // force recreate for new stream
 128                         adata = null;
 129                         adev = null;
 130
 131                         load_completed = true;
 132                         AsyncCompletedEventArgs e = new AsyncCompletedEventArgs (null, false, this);
 133                         OnLoadCompleted (e);
 134                         if (LoadCompleted != null)
 135                                 LoadCompleted (this, e);
 136
 137                         if (use_win32_player) {
 138                                 if (win32_player == null)
 139                                         win32_player = new Win32SoundPlayer (mstream);
 140                                 else
 141                                         win32_player.Stream = mstream;
 142                         }
 143                 }
 144
 145                 void AsyncFinished (IAsyncResult ar)
 146                 {
 147                         ThreadStart async = ar.AsyncState as ThreadStart;
 148                         async.EndInvoke (ar);
 149                 }
 150
 151                 public void LoadAsync ()
 152                 {
 153                         if (load_completed)
 154                                 return;
 155                         ThreadStart async = new ThreadStart (Load);
 156                         async.BeginInvoke (AsyncFinished, async);
 157                 }
 158
 159                 protected virtual void OnLoadCompleted (AsyncCompletedEventArgs e)
 160                 {
 161                 }
 162
 163                 protected virtual void OnSoundLocationChanged (EventArgs e)
 164                 {
 165                 }
 166
 167                 protected virtual void OnStreamChanged (EventArgs e)
 168                 {
 169                 }
 170
 171                 void Start ()
 172                 {
 173                         if (!use_win32_player) {
 174                                 stopped = false;
 175                                 if (adata != null)
 176                                         adata.IsStopped = false;
 177                         }
 178                         if (!load_completed)
 179                                 Load ();
 180                 }
 181
 182                 public void Play ()
 183                 {
 184                         if (!use_win32_player) {
 185                                 ThreadStart async = new ThreadStart (PlaySync);
 186                                 async.BeginInvoke (AsyncFinished, async);
 187                         } else {
 188                                 Start ();
 189
 190                                 if (mstream == null) {
 191                                         SystemSounds.Beep.Play ();
 192                                         return;
 193                                 }
 194
 195                                 win32_player.Play ();
 196                         }
 197                 }
 198
 199                 private void PlayLoop ()
 200                 {
 201                         Start ();
 202
 203                         if (mstream == null) {
 204                                 SystemSounds.Beep.Play ();
 205                                 return;
 206                         }
 207
 208                         while (!stopped)
 209                                 PlaySync ();
 210                 }
 211
 212                 public void PlayLooping ()
 213                 {
 214                         if (!use_win32_player) {
 215                                 ThreadStart async = new ThreadStart (PlayLoop);
 216                                 async.BeginInvoke (AsyncFinished, async);
 217                         } else {
 218                                 Start ();
 219
 220                                 if (mstream == null) {
 221                                         SystemSounds.Beep.Play ();
 222                                         return;
 223                                 }
 224
 225                                 win32_player.PlayLooping ();
 226                         }
 227                 }
 228
 229                 public void PlaySync ()
 230                 {
 231                         Start ();
 232
 233                         if (mstream == null) {
 234                                 SystemSounds.Beep.Play ();
 235                                 return;
 236                         }
 237
 238                         if (!use_win32_player) {
 239                                 try {
 240                                         if (adata == null)
 241                                                 adata = new WavData (mstream);
 242                                         if (adev == null)
 243                                                 adev = AudioDevice.CreateDevice (null);
 244                                         if (adata != null) {
 245                                                 adata.Setup (adev);
 246                                                 adata.Play (adev);
 247                                         }
 248                                 } catch {
 249                                 }
 250                         } else {
 251                                 win32_player.PlaySync ();
 252                         }
 253                 }
 254
 255                 public void Stop ()
 256                 {
 257                         if (!use_win32_player) {
 258                                 stopped = true;
 259                                 if (adata != null)
 260                                         adata.IsStopped = true;
 261                         } else {
 262                                 win32_player.Stop ();
 263                         }
 264                 }
 265
 266                 void ISerializable.GetObjectData (SerializationInfo info, StreamingContext context)
 267                 {
 268                 }
 269
 270                 public bool IsLoadCompleted {
 271                         get {
 272                                 return load_completed;
 273                         }
 274                 }
 275
 276                 public int LoadTimeout {
 277                         get {
 278                                 return load_timeout;
 279                         }
 280                         set {
 281                                 if (value < 0)
 282                                         throw new ArgumentException ("timeout must be >= 0");
 283                                 load_timeout = value;
 284                         }
 285                 }
 286
 287                 public string SoundLocation {
 288                         get {
 289                                 return sound_location;
 290                         }
 291                         set {
 292                                 if (value == null)
 293                                         throw new ArgumentNullException ("value");
 294                                 sound_location = value;
 295                                 load_completed = false;
 296                                 OnSoundLocationChanged (EventArgs.Empty);
 297                                 if (SoundLocationChanged != null)
 298                                         SoundLocationChanged (this, EventArgs.Empty);
 299                         }
 300                 }
 301
 302                 public Stream Stream {
 303                         get {
 304                                 return audiostream;
 305                         }
 306                         set {
 307                                 if (audiostream != value) {
 308                                         audiostream = value;
 309                                         load_completed = false;
 310                                         OnStreamChanged (EventArgs.Empty);
 311                                         if (StreamChanged != null)
 312                                                 StreamChanged (this, EventArgs.Empty);
 313                                 }
 314                         }
 315                 }
 316
 317                 public object Tag {
 318                         get {
 319                                 return tag;
 320                         }
 321                         set {
 322                                 tag = value;
 323                         }
 324                 }
 325
 326                 public event AsyncCompletedEventHandler LoadCompleted;
 327                 public event EventHandler SoundLocationChanged;
 328                 public event EventHandler StreamChanged;
 329         }
 330 }
 331