-#include <gst/gst.h>\r
- \r
-int main(int argc, char *argv[]) {\r
- GstElement *pipeline, *source, *sink;\r
- GstBus *bus;\r
- GstMessage *msg;\r
- GstStateChangeReturn ret;\r
- \r
- /* Initialize GStreamer */\r
- gst_init (&argc, &argv);\r
- \r
- /* Create the elements */\r
- source = gst_element_factory_make ("videotestsrc", "source");\r
- sink = gst_element_factory_make ("autovideosink", "sink");\r
- \r
- /* Create the empty pipeline */\r
- pipeline = gst_pipeline_new ("test-pipeline");\r
- \r
- if (!pipeline || !source || !sink) {\r
- g_printerr ("Not all elements could be created.\n");\r
- return -1;\r
- }\r
- \r
- /* Build the pipeline */\r
- gst_bin_add_many (GST_BIN (pipeline), source, sink, NULL);\r
- if (gst_element_link (source, sink) != TRUE) {\r
- g_printerr ("Elements could not be linked.\n");\r
- gst_object_unref (pipeline);\r
- return -1;\r
- }\r
- \r
- /* Modify the source's properties */\r
- g_object_set (source, "pattern", 0, NULL);\r
- \r
- /* Start playing */\r
- ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);\r
- if (ret == GST_STATE_CHANGE_FAILURE) {\r
- g_printerr ("Unable to set the pipeline to the playing state.\n");\r
- gst_object_unref (pipeline);\r
- return -1;\r
- }\r
- \r
- /* Wait until error or EOS */\r
- bus = gst_element_get_bus (pipeline);\r
- msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);\r
- \r
- /* Parse message */\r
- if (msg != NULL) {\r
- GError *err;\r
- gchar *debug_info;\r
- \r
- switch (GST_MESSAGE_TYPE (msg)) {\r
- case GST_MESSAGE_ERROR:\r
- gst_message_parse_error (msg, &err, &debug_info);\r
- g_printerr ("Error received from element %s: %s\n", GST_OBJECT_NAME (msg->src), err->message);\r
- g_printerr ("Debugging information: %s\n", debug_info ? debug_info : "none");\r
- g_clear_error (&err);\r
- g_free (debug_info);\r
- break;\r
- case GST_MESSAGE_EOS:\r
- g_print ("End-Of-Stream reached.\n");\r
- break;\r
- default:\r
- /* We should not reach here because we only asked for ERRORs and EOS */\r
- g_printerr ("Unexpected message received.\n");\r
- break;\r
- }\r
- gst_message_unref (msg);\r
- }\r
- \r
- /* Free resources */\r
- gst_object_unref (bus);\r
- gst_element_set_state (pipeline, GST_STATE_NULL);\r
- gst_object_unref (pipeline);\r
- return 0;\r
+#include <gst/gst.h>
+
+int main(int argc, char *argv[]) {
+ GstElement *pipeline, *source, *sink;
+ GstBus *bus;
+ GstMessage *msg;
+ GstStateChangeReturn ret;
+
+ /* Initialize GStreamer */
+ 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);
+
+ /* 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;
}
\ No newline at end of file