80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
#include <gst/gst.h>
|
|
|
|
int main (int argc, char *argv[])
|
|
{
|
|
GstElement *pipeline, *source, *sink;
|
|
GstBus *bus;
|
|
GstMessage *msg;
|
|
GstStateChangeReturn ret;
|
|
|
|
/* Initialize */
|
|
gst_init(&argc,&argv);
|
|
|
|
/* Create the elements */
|
|
source = gst_element_factory_make("videotestsrc","source");
|
|
sink = gst_element_factory_make("autovideosink","sink");
|
|
|
|
/* Create the empty pipeline */
|
|
pipeline = gst_pipeline_new("test-pipeline");
|
|
|
|
if(!pipeline || !source || !sink)
|
|
{
|
|
g_printerr("Not all elements could be created!\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Build the pipeline */
|
|
gst_bin_add_many(GST_BIN(pipeline),source,sink,NULL);
|
|
if (gst_element_link(source,sink) != TRUE)
|
|
{
|
|
g_printerr("Elements could not be linked.!\n");
|
|
gst_object_unref(pipeline);
|
|
return -1;
|
|
}
|
|
|
|
/* Modify the source's properties */
|
|
g_object_set(source, "pattern", 0 , 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;
|
|
}
|
|
|
|
/* 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);
|
|
|
|
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:
|
|
g_printerr("Unexpected message recevied.\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;
|
|
} |