80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
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#include <gst/gst.h>
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int main (int argc, char *argv[])
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{
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GstElement *pipeline, *source, *sink;
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GstBus *bus;
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GstMessage *msg;
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GstStateChangeReturn ret;
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/* Initialize */
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gst_init(&argc,&argv);
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/* Create the elements */
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source = gst_element_factory_make("videotestsrc","source");
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sink = gst_element_factory_make("autovideosink","sink");
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/* Create the empty pipeline */
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pipeline = gst_pipeline_new("test-pipeline");
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if(!pipeline || !source || !sink)
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{
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g_printerr("Not all elements could be created!\n");
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return -1;
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}
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/* Build the pipeline */
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gst_bin_add_many(GST_BIN(pipeline),source,sink,NULL);
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if (gst_element_link(source,sink) != TRUE)
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{
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g_printerr("Elements could not be linked.!\n");
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gst_object_unref(pipeline);
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return -1;
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}
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/* Modify the source's properties */
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g_object_set(source, "pattern", 0 , NULL);
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/* Start playing */
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ret = gst_element_set_state(pipeline, GST_STATE_PLAYING);
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if (ret == GST_STATE_CHANGE_FAILURE)
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{
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g_printerr("Unable to set the pipeline to the playing state. \n");
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gst_object_unref(pipeline);
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return -1;
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}
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/* Wait until error or EOS */
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bus = gst_element_get_bus (pipeline);
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msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);
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if (msg != NULL)
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{
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GError *err;
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gchar *debug_info;
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switch (GST_MESSAGE_TYPE(msg))
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{
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case GST_MESSAGE_ERROR:
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gst_message_parse_error(msg, &err, &debug_info);
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g_printerr("Error received from element %s:%s\n",GST_OBJECT_NAME(msg->src),err->message);
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g_printerr("Debugging information: %s\n",debug_info ? debug_info : "none");
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g_clear_error(&err);
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g_free(debug_info);
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break;
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case GST_MESSAGE_EOS:
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g_print("End-of_Stream reached.\n");
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break;
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default:
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g_printerr("Unexpected message recevied.\n");
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break;
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}
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gst_message_unref(msg);
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}
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/* Free resources */
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gst_object_unref(bus);
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gst_element_set_state(pipeline, GST_STATE_NULL);
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gst_object_unref(pipeline);
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return 0;
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}
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