static void Eos_cb(IntPtr inst)
{
try {
AppSink __obj = GLib.Object.GetObject(inst, false) as AppSink;
__obj.OnEos();
} catch (Exception e) {
GLib.ExceptionManager.RaiseUnhandledException(e, false);
}
}
static IntPtr TryPullSampleEvent_cb(IntPtr inst, ulong timeout)
{
try {
AppSink __obj = GLib.Object.GetObject(inst, false) as AppSink;
Gst.Sample __result;
__result = __obj.OnTryPullSampleEvent(timeout);
return(__result == null ? IntPtr.Zero : __result.OwnedCopy);
} catch (Exception e) {
GLib.ExceptionManager.RaiseUnhandledException(e, true);
// NOTREACHED: above call does not return.
throw e;
}
}
static int NewSample_cb(IntPtr inst)
{
try {
AppSink __obj = GLib.Object.GetObject(inst, false) as AppSink;
Gst.FlowReturn __result;
__result = __obj.OnNewSample();
return((int)__result);
} catch (Exception e) {
GLib.ExceptionManager.RaiseUnhandledException(e, true);
// NOTREACHED: above call does not return.
throw e;
}
}
/// <summary>
/// Loads the video. Setup playbin2 and start polling thread
/// </summary>
/// <param name='uri'>
/// video URI.
/// </param>
public void LoadVideo(string uri){
if (gstThread != null)
{
isrunning = false;
gstThread.Join();
gstThread = new Thread(new ThreadStart(KeepPolling));
}
if(playBin != null){
playerState = VideoPlayerState.STOPPED;
Console.WriteLine("STOPPED");
//Dispose playbin2 and appsink
playBin.SetState(State.Null);
playBin.Dispose();
appSink.SetState(State.Null);
appSink.Dispose();
//Create playbin2 and appsink
playBin = new PlayBin2();
appSink = ElementFactory.Make("appsink", "sink") as AppSink;
//appSink.Caps = new Caps("video/x-raw-yuv", new object[]{});
appSink.Caps = new Caps("video/x-raw-rgb", new object[] { "bpp", 24 });
appSink.Drop = true;
appSink.MaxBuffers = 1;
playBin.VideoSink = appSink;
}else{
//Create playbin2 and appsink
playBin = new PlayBin2();
appSink = ElementFactory.Make("appsink", "sink") as AppSink;
//appSink.Caps = new Caps("video/x-raw-yuv", new object[]{});
appSink.Caps = new Caps("video/x-raw-rgb", new object[] { "bpp", 24 });
appSink.Drop = true;
appSink.MaxBuffers = 1;
playBin.VideoSink = appSink;
}
//init variables
texturesOK = false;
width = 0;
height = 0;
//Set file uri
string validUri = uri;
if (!validUri.StartsWith("file://"))
{
validUri = "file://" + uri;
}
playBin.Uri = validUri;
StateChangeReturn sr = playBin.SetState(State.Playing);
Console.WriteLine(sr.ToString());
playerState = VideoPlayerState.LOADING;
Console.WriteLine("LOADING:" + validUri);
if (gstThread == null)
{
gstThread = new Thread(new ThreadStart(KeepPolling));
}
//Start polling thread...future thought, using async queue?
isrunning = true;
gstThread.Start();
return;
}
/// <summary>
/// Polling thread. Pull buffer data from GST thread.
/// </summary>
void KeepPolling(){
while(isrunning){
switch (playerState)
{
case VideoPlayerState.STOPPED:
break;
case VideoPlayerState.LOADING:
//get video width/height
int w = 0, h = 0;
//Query video information
Gst.Buffer buf = appSink.PullBuffer();
if(buf != null){
Console.WriteLine(buf.Caps.ToString());
//string format = buf.Caps[0].GetValue("format").Val.ToString();
//Console.WriteLine("format: " + format);
int.TryParse(buf.Caps[0].GetValue("width").Val.ToString(), out w);
int.TryParse(buf.Caps[0].GetValue("height").Val.ToString(), out h);
if (w * h != 0)
{
//Create decoded buffer
lock (lockFrameBuf)
{
width = w;
height = h;
buffer = new byte[width * height * 3];
Marshal.Copy(buf.Data, buffer, 0, width * height * 3);
isFrameNew = true;
//Dispose handle to avoid memory leak
//gst_mini_object_unref(buf.Handle);
buf.Dispose();
}
Console.WriteLine("PLAYING");
playerState = VideoPlayerState.PLAYING;
continue;
}
}
break;
case VideoPlayerState.PLAYING:
Gst.Buffer buf2 = appSink.PullBuffer();
if(buf2 != null){
lock(lockFrameBuf){
//Update buffer
Marshal.Copy(buf2.Data, buffer, 0, width * height * 3);
isFrameNew = true;
//gst_mini_object_unref(buf2.Handle);
//buf2.Dispose();
}
buf2.Dispose();
}else{
lock (lockFrameBuf)
{
//Clear buffer
buffer = new byte[width * height * 3];
}
playerState = VideoPlayerState.STOPPED;
Console.WriteLine("STOPPED");
}
break;
case VideoPlayerState.PAUSED:
//Do nothing
break;
default:
//Do nothing
break;
}
Thread.Sleep(10);
}
//Clean up
this.PlayerState = VideoPlayerState.STOPPED;
playBin.SetState(State.Null);
playBin.Dispose();
appSink.SetState(State.Null);
appSink.Dispose();
playBin = null;
appSink = null;
}
