v1

2022-05-27 08:26:38 +03:00
parent 9b54c48dc3
commit 5909db4eec
3849 changed files with 2165811 additions and 0 deletions
--- a/basic-tutorial-2.cpp
+++ b/basic-tutorial-2.cpp
@@ -0,0 +1,93 @@
+#include <gst/gst.h>
+
+//#include </usr/include/gstreamer-1.0/gst/gst.h>
+//;/usr/include/glib-2.0;/usr/lib/x86_64-linux-gnu/glib-2.0/include
+
+int
+main (int argc, char *argv[])
+{
+    GstElement *pipeline, *source, *sink, *my_filter;
+    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");
+    my_filter = gst_element_factory_make("vertigotv", "my_filter");
+
+    /* 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, my_filter, sink, NULL);
+    if (gst_element_link (source, my_filter) != TRUE) {
+        g_printerr ("Elements could not be linked.\n");
+        gst_object_unref (pipeline);
+        return -1;
+    }
+
+    if (gst_element_link (my_filter, 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,
+                                        static_cast<GstMessageType>(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;
+}
+