<html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">On 07/17/2013 10:04 AM, stixxy wrote: </div> <blockquote cite="mid:1374077088314-4661081.post@n4.nabble.com" type="cite"> <pre wrap="">i have follow line and i want to compile what is the best solution for a simple code? gst-launch-0.10 alsasrc device=hw:0,0 ! audioconvert ! alsasink device=hw:0,0 </pre> </blockquote> You can create the same pipeline in C with <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstParse.html#gst-parse-launch">gst_parse_launch</a>: <blockquote><tt>GError* error; GstElement* pipeline = gst_parse_launch("alsasrc device=hw:0,0 ! audioconvert ! alsasink device=hw:0,0", &error);</tt><tt> </tt><tt>if (error) {</tt><tt> </tt><tt> // print error</tt><tt> </tt><tt>}</tt><tt> </tt><tt>if (pipeline) {</tt><tt> </tt><tt> gst_element_set_state(pipeline, GST_STATE_PLAYING);</tt><tt> </tt><tt>}</tt> </blockquote> Or you could build it by hand: <blockquote><tt>GstElement* pipeline = gst_pipeline_new(NULL);</tt><tt> </tt><tt> </tt><tt>GstElement* alsasrc = gst_element_factory_make("alsasrc", NULL);</tt><tt> </tt><tt>g_object_set(alsasrc, "device", "hw:0,0", NULL);</tt><tt> </tt><tt>gst_bin_add(GST_BIN(pipeline), alsasrc); </tt><tt></tt><tt> </tt><tt>GstElement* audioconvert = gst_element_factory_make("audioconvert", NULL);</tt><tt> </tt><tt>gst_bin_add(GST_BIN(pipeline), audioconvert); </tt><tt>gst_element_link(alsasrc, audioconvert); </tt><tt></tt><tt> </tt><tt>GstElement* alsasink = gst_element_factory_make("alsasink", NULL);</tt><tt> </tt><tt>g_object_set(alsasink, "device", "hw:0,0", NULL);</tt><tt> </tt><tt>gst_bin_add(GST_BIN(pipeline), alsasink);</tt><tt> </tt><tt>gst_element_link(audioconvert, alsasink)</tt><tt>; </tt><tt> </tt><tt>gst_element_set_state(pipeline, GST_STATE_PLAYING);</tt><tt> </tt></blockquote> </body> </html>