gstreamer_screenVideo.cpp

#include <gst/gst.h>
//g++ main.cpp $(pkg-config --cflags --libs gstreamer-1.0) -o main

int main(int argc, char *argv[]) {
    GstElement *pipeline;
    GstBus *bus;
    GstMessage *msg;

    /* Initialize GStreamer */
    gst_init (&argc, &argv);

    /* Build the pipeline */
    pipeline = gst_parse_launch ("ximagesrc ! videoconvert ! autovideosink", NULL);

    /* Start playing */
    gst_element_set_state (pipeline, GST_STATE_PLAYING);

    /* Wait until error or EOS */
    bus = gst_element_get_bus (pipeline);
    msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE, (GstMessageType)(GST_MESSAGE_ERROR | GST_MESSAGE_EOS));

    /* Free resources */
    if (msg != NULL)
      gst_message_unref (msg);
    gst_object_unref (bus);
    gst_element_set_state (pipeline, GST_STATE_NULL);
    gst_object_unref (pipeline);

    return 0;
}