[Gst Exmaple] tutorial 2 and 2 + add-filter exercise

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>

diff --git a/gst_example/tutorial2/basic-tutorial-2-add-filter.c b/gst_example/tutorial2/basic-tutorial-2-add-filter.c
new file mode 100644 (file)
index 0000000..6ee8b9a
--- /dev/null
+++ b/gst_example/tutorial2/basic-tutorial-2-add-filter.c
@@ -0,0 +1,71 @@
+#include <gst/gst.h>
+
+int main(int argc, char *argv[]) {
+  GstElement *pipeline, *source, *sink, *filter;
+  GstBus *bus;
+  GstMessage *msg;
+  GstStateChangeReturn ret;
+
+  gst_init(&argc, &argv);
+
+  source = gst_element_factory_make("videotestsrc", "source");
+  sink = gst_element_factory_make("autovideosink", "sink");
+  filter = gst_element_factory_make("vertigotv", "filter1");
+
+  pipeline = gst_pipeline_new("test-pipeline");
+
+  if (!pipeline || !source || !sink || !filter) {
+    g_printerr("Cannot create elements.\n");
+    return -1;
+  }
+
+  gst_bin_add_many(GST_BIN(pipeline), source, sink, filter, NULL);
+  if (gst_element_link(source, filter) != TRUE) {
+    g_printerr("Cannot linke source and filter\n");
+    gst_object_unref(pipeline);
+    return -1;
+  }
+  if (gst_element_link(filter, sink) != TRUE) {
+    g_printerr("Cannot linke filter and sink\n");
+    gst_object_unref(pipeline);
+    return -1;
+  }
+
+  g_object_set(source, "pattern", 0, NULL);
+
+  ret = gst_element_set_state(pipeline, GST_STATE_PLAYING);
+  if (ret == GST_STATE_CHANGE_FAILURE) {
+    g_printerr("Cannot setup pipeline as playing");
+    gst_object_unref(pipeline);
+    return -1;
+  }
+
+  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.\n");
+      break;
+    default:
+      g_printerr("Undefined gst message.\n");
+    }
+  }
+
+  gst_object_unref(bus);
+  gst_element_set_state(pipeline, GST_STATE_NULL);
+  gst_object_unref(pipeline);
+  return 0;
+}

diff --git a/gst_example/tutorial2/basic-tutorial-2.c b/gst_example/tutorial2/basic-tutorial-2.c
new file mode 100644 (file)
index 0000000..380d4b0
--- /dev/null
+++ b/gst_example/tutorial2/basic-tutorial-2.c
@@ -0,0 +1,65 @@
+#include <gst/gst.h>
+
+int main(int argc, char *argv[]) {
+  GstElement *pipeline, *source, *sink;
+  GstBus *bus;
+  GstMessage *msg;
+  GstStateChangeReturn ret;
+
+  gst_init(&argc, &argv);
+
+  source = gst_element_factory_make("videotestsrc", "source");
+  sink = gst_element_factory_make("autovideosink", "sink");
+
+  pipeline = gst_pipeline_new("test-pipeline");
+
+  if (!pipeline || !source || !sink) {
+    g_printerr("Cannot create elements.\n");
+    return -1;
+  }
+
+  gst_bin_add_many(GST_BIN(pipeline), source, sink, NULL);
+  if (gst_element_link(source, sink) != TRUE) {
+    g_printerr("Cannot linke source and sink\n");
+    gst_object_unref(pipeline);
+    return -1;
+  }
+
+  g_object_set(source, "pattern", 0, NULL);
+
+  ret = gst_element_set_state(pipeline, GST_STATE_PLAYING);
+  if (ret == GST_STATE_CHANGE_FAILURE) {
+    g_printerr("Cannot setup pipeline as playing");
+    gst_object_unref(pipeline);
+    return -1;
+  }
+
+  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.\n");
+      break;
+    default:
+      g_printerr("Undefined gst message.\n");
+    }
+  }
+
+  gst_object_unref(bus);
+  gst_element_set_state(pipeline, GST_STATE_NULL);
+  gst_object_unref(pipeline);
+  return 0;
+}