I have the following pipeline which works fine:
gst-launch-1.0 -v tcpclientsrc host=192.168.1.132 port=5000 ! gdpdepay ! rtph264depay ! avdec_h264 ! videoconvert ! autovideosink
I want to write a C program to do the same thing.
I translated the previous pipeline to the following code, but the video does not start (HELP ME)
#include <gst/gst.h>
int main(int argc, char *argv[]) {
GstBus *bus;
GstMessage *msg;
GstStateChangeReturn ret;
/* Initialize GStreamer */
gst_init (&argc, &argv);
GError *error = NULL;
GstElement *pipeline = gst_parse_launch("tcpserversrc name=src ! gdpdepay ! rtph264depay ! avdec_h264 !videoconvert ! autovideosink", &error);
if (!pipeline) {
g_print ("Parse error: %s\n", error->message);
exit (1);
}
GstElement *src = gst_bin_get_by_name(GST_BIN(pipeline), "src");
g_object_set(src, "host", "192.168.1.132","port",5000, NULL);
// Start playing
ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
if (ret == GST_STATE_CHANGE_FAILURE) {
g_printerr ("Unable to set the pipeline to the playing state.\n");
gst_object_unref (pipeline);
return -1;
}else {
g_printerr("ERROR PLAY\n");
}
// Wait until error or EOS
bus = gst_element_get_bus (pipeline);
msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);
// Parse message
if (msg != NULL) {
GError *err;
gchar *debug_info;
switch (GST_MESSAGE_TYPE (msg)) {
case GST_MESSAGE_ERROR:
gst_message_parse_error (msg, &err, &debug_info);
g_printerr ("Error received from element %s: %s\n", GST_OBJECT_NAME (msg->src), err->message);
g_printerr ("Debugging information: %s\n", debug_info ? debug_info : "none");
g_clear_error (&err);
g_free (debug_info);
break;
case GST_MESSAGE_EOS:
g_print ("End-Of-Stream reached.\n");
break;
default:
// We should not reach here because we only asked for ERRORs and EOS
g_printerr ("Unexpected message received.\n");
break;
}
gst_message_unref (msg);
}
// Free resources
gst_object_unref (bus);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
return 0;
}