| <chapter id="cha-initialisation"> |
| <title>Initializing <application>GStreamer</application></title> |
| <para> |
| When writing a <application>GStreamer</application> application, you can |
| simply include gst/gst.h to get access to the library functions. |
| </para> |
| <para> |
| Before the <application>GStreamer</application> libraries can be used |
| gst_init () has to be performed from the main app. this call will perform |
| first initialisation and will parse the GStreamer specific command line |
| options. |
| </para> |
| <para> |
| A typical program would start like this: |
| </para> |
| |
| <programlisting> |
| #include <gst/gst.h> |
| |
| ... |
| |
| int |
| main (int argc, char *argv[]) |
| { |
| ... |
| gst_init (&argc, &argv); |
| ... |
| } |
| </programlisting> |
| <para> |
| It is also possible to call the gst_init method with two NULL argumants. |
| </para> |
| <para> |
| Use the GST_VERSION_MAJOR, GST_VERSION_MINOR and GST_VERSION_MICRO macros to |
| get the <application>GStreamer</application> version you are building against. |
| </para> |
| <sect1> |
| <title>The popt interface</title> |
| <para> |
| more info here |
| </para> |
| <programlisting> |
| int |
| main(int argc, char *argv[]) |
| { |
| gboolean silent = FALSE; |
| gchar *savefile = NULL; |
| struct poptOption options[] = { |
| {"silent", 's', POPT_ARG_NONE|POPT_ARGFLAG_STRIP, &silent, 0, |
| "do not output status information", NULL}, |
| {"output", 'o', POPT_ARG_STRING|POPT_ARGFLAG_STRIP, &savefile, 0, |
| "save xml representation of pipeline to FILE and exit", "FILE"}, |
| POPT_TABLEEND |
| }; |
| |
| gst_init_with_popt_table (&argc, &argv, options); |
| |
| ... |
| </programlisting> |
| </sect1> |
| |
| </chapter> |