Hello, everyone:
I am a newbie to use gstreamer, and I want to write one program to decode one mpeg file and display the video on the gtk+ drawingarea widgets; but I am failed. I need your help, thank you!
usally, I use such one command:
gst-launch filesrc location="test.mpg" ! mpegdemux ! mpeg2dec ! xvimagesink
and I managed to display the video;
Now, I want to write my own program to do it. I meet two problems.
1) how should I use "mpegdemux" and "mpeg2dec" in my program?
related code is here:
========
datasource = gst_element_factory_make ("filesrc", "mpegfile");
g_object_set(G_OBJECT(datasource), "location", "/home/minjun/test.mpg", NULL);
demuxer = gst_element_factory_make("mpegdemux", "demux");
gst_bin_add(GST_BIN(pipeline), datasource);
gst_bin_add(GST_BIN(pipeline), demuxer);
gst_element_link_pads(datasource, "src", demuxer, "sink");
decoder = gst_element_factory_make("mpeg2dec", "decoder");
gst_bin_add(GST_BIN(pipeline), decoder);
gst_element_link_pads(demuxer, "src", decoder, "sink");
sink = gst_element_factory_make ("xvimagesink", "xvimagesink");
gst_bin_add(GST_BIN(pipeline), sink);
===================Is there something wrong? thank you.
2) how should I to display video contents on one drawingarea widget?
I use "gst_x_overlay_set_xwindow_id(GST_X_OVERLAY(GST_MESSAGE_SRC(message)), GDK_DRAWABLE_XID(screen->window));" in the callback function for "expose-event". Is it right?
thank you!
--
Best regards,
Minjun
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