gstreamer/examples/helloworld/helloworld.c

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#include <stdlib.h>
#include <gst/gst.h>
int main (int argc, char *argv[])
{
GstElement *bin, *filesrc, *decoder, *osssink;
gst_init (&argc, &argv);
if (argc != 2) {
g_print ("usage: %s <mp3 file>\n", argv[0]);
exit (-1);
}
/* create a new bin to hold the elements */
bin = gst_pipeline_new ("pipeline");
g_assert (bin);
/* create a disk reader */
filesrc = gst_element_factory_make ("filesrc", "disk_source");
g_assert (filesrc);
g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
/* now it's time to get the decoder */
decoder = gst_element_factory_make ("mad", "decode");
if (!decoder) {
g_print ("could not find plugin \"mad\"");
return -1;
}
/* and an audio sink */
osssink = gst_element_factory_make ("osssink", "play_audio");
g_assert (osssink);
/* add objects to the main pipeline */
gst_bin_add_many (GST_BIN (bin), filesrc, decoder, osssink, NULL);
/* link the elements */
gst_element_link_many (filesrc, decoder, osssink, NULL);
/* start playing */
gst_element_set_state (bin, GST_STATE_PLAYING);
while (gst_bin_iterate (GST_BIN (bin)));
/* stop the bin */
gst_element_set_state (bin, GST_STATE_NULL);
exit (0);
}