Further work on gstreamer video support, not working yet

GstreamerHelper/GstreamerVideoStream.cpp

@@ -1,56 +1,190 @@
 #include "stdafx.h"
 #include "GstreamerVideoStream.h"
 
+typedef enum {
+  GST_PLAY_FLAG_VIDEO         = (1 << 0),
+  GST_PLAY_FLAG_AUDIO         = (1 << 1),
+  GST_PLAY_FLAG_TEXT          = (1 << 2),
+  GST_PLAY_FLAG_VIS           = (1 << 3),
+  GST_PLAY_FLAG_SOFT_VOLUME   = (1 << 4),
+  GST_PLAY_FLAG_NATIVE_AUDIO  = (1 << 5),
+  GST_PLAY_FLAG_NATIVE_VIDEO  = (1 << 6),
+  GST_PLAY_FLAG_DOWNLOAD      = (1 << 7),
+  GST_PLAY_FLAG_BUFFERING     = (1 << 8),
+  GST_PLAY_FLAG_DEINTERLACE   = (1 << 9),
+  GST_PLAY_FLAG_SOFT_COLORBALANCE = (1 << 10)
+} GstPlayFlags;
 
 GstreamerVideoStream::GstreamerVideoStream(int ID)
 {
 	this->ID = ID;
+
+	Loop = false;
+
+	Running = true;
+
+	Paused = false;
+	Finished = false;
+	Closed = false;
+
+	Duration = -1.0;
 }
 
 
 GstreamerVideoStream::~GstreamerVideoStream(void)
 {
+	CloseVideo();
 }
 
 int GstreamerVideoStream::LoadVideo(const wchar_t* Filename)
 {
+	Element = gst_element_factory_make("playbin", "playbin");
+
+
+	Appsink = (GstAppSink*) gst_element_factory_make("appsink", "appsink");
+
+	Bus = gst_element_get_bus(Element);
+	if(!Element)
+	{
+		LogVideoError ("Could not create element!");
+		return -1;
+	} 
+	g_object_set(Element, "uri", Filename, NULL);
+	//g_object_set(Element, "video-sink", Appsink, NULL);
+	g_object_set(Element, "flags", GST_PLAY_FLAG_VIDEO, NULL); 
+
+	//GstCaps *caps = gst_caps_new_any();
+
+	//gst_caps_set_value(caps, "format", (GValue*)"RGBA");
+	//gst_app_sink_set_caps(Appsink, caps);
+
+	gst_element_set_state(Element, GST_STATE_PLAYING);
+	//gst_bus_timed_pop_filtered(Bus, -1, GST_MESSAGE_ASYNC_DONE);
+	Paused = true;
+	RefreshDuration();
+
 	return ID;
 }
 
-
 bool GstreamerVideoStream::CloseVideo()
 {
+	if(Element)
+		gst_element_set_state(Element, GST_STATE_NULL);
+	if(Appsink)
+		gst_object_unref(Appsink);
+	if(Bus)
+		gst_object_unref(Bus);
+	if(Element)
+		gst_object_unref(Element);
 	return true;
 }
 
 float GstreamerVideoStream::GetVideoLength()
 {
-	return 0.0;
+	if(Duration <= 0)
+		RefreshDuration();
+	return Duration;
 }
 
-UINT8* GstreamerVideoStream::GetFrame(float Time, float &VideoTime)
+guint8* GstreamerVideoStream::GetFrame(float Time, float &VideoTime, int &Size, int &Width, int &Height)
 {
+	/*GstSample *sample;
+	GstBuffer *buffer;
+	GstElement *sink;
+	
+	sample = gst_app_sink_pull_sample(Appsink);
+	buffer = gst_sample_get_buffer(sample);
+
+	g_object_get(Element, "video-sink", &sink, NULL);
+
+	gst_buffer_map(buffer, &Mapinfo, GST_MAP_READ);
+
+	VideoTime = (float) (buffer->pts / GST_SECOND);
+	Size = Mapinfo.size;
+	return Mapinfo.data; */
 	return 0;
 }
 
 bool GstreamerVideoStream::Skip(float Start, float Gap)
 {
-	return true;
+	if(!gst_element_seek_simple(Element, GST_FORMAT_TIME, (GstSeekFlags)(GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE), (Start + Gap) * GST_SECOND))
+	{
+		LogVideoError("Seek failed");
+		return true;
+	}
+	return false;
 }
 
 void GstreamerVideoStream::SetVideoLoop(bool Loop)
 {
+	this->Loop = Loop;
 }
 
 void GstreamerVideoStream::PauseVideo()
 {
+	if(Element)
+		gst_element_set_state(Element, GST_STATE_PAUSED);
 }
 
 void GstreamerVideoStream::ResumeVideo()
 {
+	if(Element)
+		gst_element_set_state(Element, GST_STATE_PLAYING);
 }
 
-bool GstreamerVideoStream::Finished()
+bool GstreamerVideoStream::IsFinished()
 {
-	return true;
+	return Finished;
 }
+
+void GstreamerVideoStream::RefreshDuration()
+{
+	if(Element)
+	{
+		gint64 time;
+		if(!gst_element_query_duration(Element, GST_FORMAT_TIME, &time)) {
+			LogVideoError("Could not query duration");
+		}
+		Duration = (gfloat)((gdouble)(time/GST_SECOND));
+	}
+}
+
+void GstreamerVideoStream::UpdateVideo()
+{
+	if(Running) {
+		Message = gst_bus_pop (Bus);
+   
+		/* Parse message */
+		if (Message != NULL) {
+		  GError *err;
+		  gchar *debug_info;
+		  string m;
+       
+		  switch (GST_MESSAGE_TYPE (Message)) {
+			case GST_MESSAGE_ERROR:
+				gst_message_parse_error (Message, &err, &debug_info);
+				m = err->message;
+				LogVideoError(m.c_str());
+				g_clear_error (&err);
+				g_free (debug_info);
+				break;
+			case GST_MESSAGE_DURATION_CHANGED:
+				RefreshDuration();
+				break;
+			case GST_MESSAGE_STATE_CHANGED:
+				break;
+			case GST_MESSAGE_EOS:
+				if(Loop)
+					Skip(0, 0);
+				else
+					Finished = true;
+				break;
+			default:
+				/* We should not reach here */
+				//LogError ("Unexpected message received.\n");
+				break;
+		  }
+		  gst_message_unref (Message);
+		}
+	}
+}