Changes between Version 12 and Version 13 of Docs/825gen2/Dev/Devices/USB/Webcams

Timestamp:

08/21/24 10:46:11 (16 months ago)

Author:

Don Wilson

Comment:

--

Docs/825gen2/Dev/Devices/USB/Webcams

@@ -91 +91 @@
 }}}
 
+Following is an example function to display live video for the specified number of seconds:
 
+{{{
+void WebCamDisplayVideo(int seconds)
+{
+        GstElement* pipeline;
+        GstBus* bus;
+        GstMessage* msg;
+
+        const char* cmd = "v4l2src device=/dev/video2 ! autovideosink";
+        pipeline = gst_parse_launch(cmd, NULL);
+         gst_element_set_state (pipeline, GST_STATE_PLAYING);
+
+         /* Wait until error or EOS */
+         bus = gst_element_get_bus(pipeline);
+         msg = gst_bus_timed_pop_filtered(bus, seconds * 1000 * GST_MSECOND, (GstMessageType)(GST_MESSAGE_ERROR | GST_MESSAGE_EOS));
+         if(msg != NULL) {
+                 gst_message_unref(msg);
+         }
+         gst_object_unref(bus);
+         gst_element_set_state(pipeline, GST_STATE_NULL);
+         gst_object_unref(pipeline);
+}
+
+}}}
+
+