public AudioPlayer()
{
// These environment variables are necessary to locate GStreamer libraries, and to stop it from loading
// wrong libraries installed elsewhere on the system.
var directoryName = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase);
if (directoryName != null)
{
string apppath = directoryName.Remove(0, 6);
string pluginPath = apppath + @"\gstreamer\bin\plugins";
Environment.SetEnvironmentVariable("GST_PLUGIN_PATH", pluginPath);
Environment.SetEnvironmentVariable("GST_PLUGIN_SYSTEM_PATH", "");
string pathVariable = @"C:\Windows;" + apppath + @"\gstreamer\lib;"
+ apppath + @"\gstreamer\bin;" + Environment.GetEnvironmentVariable("PATH");
Environment.SetEnvironmentVariable("PATH", pathVariable);
Environment.SetEnvironmentVariable("GST_REGISTRY", apppath + @"\gstreamer\bin\registry.bin");
// These are for saving debug information.
Environment.SetEnvironmentVariable("GST_DEBUG", "*:3");
Environment.SetEnvironmentVariable("GST_DEBUG_FILE", "GstreamerLog.txt");
Environment.SetEnvironmentVariable("GST_DEBUG_DUMP_DOT_DIR", apppath);
}
Application.Init();
_playBin = new PlayBin2("_playBin");
Element audioSink = SelectAudioSink();
_playBin.AudioSink = audioSink;
_playBin.Bus.AddWatch(OnBusMessage);
// TODO: implement gapless playback (wait for gstreamer fix?)
/*_playBin.AboutToFinish += (o, args) =>
{
if (_currentTrackIndex + 1 >= _trackArray.Length)
return;
OnTrackChanged(new TrackChangedHandlerArgs
{
NewTrack = _trackArray[_currentTrackIndex + 1],
OldTrack = _trackArray[_currentTrackIndex]
});
_playBin.Uri = PathStringToUri(_trackArray[++_currentTrackIndex].Path);
};*/
_trackArray = new Track[0];
_playBin.SetState(State.Ready);
}
public void PlayAudioStream(string url)
{
if (_currentUrl == url && _playBin != null) {
_playBin.SetState(State.Playing);
return;
}
_currentUrl = url;
if (_playBin != null) {
_playBin.SetState(Gst.State.Null);
_playBin.SetVolume(StreamVolumeFormat.Linear, _initialVolume);
}
url = String.Format("{0}?client_id={1}", url, SoundCloudRestClient.API_CLIENT_ID);
Console.WriteLine(url);
_playBin = ElementFactory.Make ("playbin2", "play") as PlayBin2;
_playBin.Uri = url;
_playBin.Bus.AddWatch ( new BusFunc( (bus, message) => {
switch (message.Type) {
case Gst.MessageType.Error:
Enum err;
string msg;
message.ParseError (out err, out msg);
Console.WriteLine ("Gstreamer error: {0}", msg);
//loop.Quit ();
break;
case Gst.MessageType.Eos:
Console.WriteLine ("Stream finished.");
_playBin.SetState (Gst.State.Null);
if (TrackEnded != null)
TrackEnded (this, new EventArgs());
break;
}
return true;
}));
// Play the stream
if (_playBin.CurrentState != State.Paused)
_playBin.SetState(State.Playing);
// Start rendering the waveform
StartTimecodeUpdate();
}
