gstreamer/examples/queue3/queue3.c

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#include <stdlib.h>
#include <gst/gst.h>
gboolean playing;
/* eos will be called when the src element has an end of stream */
void
eos (GstElement * element, gpointer data)
{
g_print ("have eos, quitting\n");
playing = FALSE;
}
int
main (int argc, char *argv[])
{
GstElement *filesrc, *osssink, *queue, *parse, *decode;
GstElement *bin;
GstElement *thread;
gst_init (&argc, &argv);
if (argc != 2) {
g_print ("usage: %s <filename>\n", argv[0]);
exit (-1);
}
/* create a new thread to hold the elements */
thread = gst_thread_new ("thread");
g_assert (thread != NULL);
/* create a new bin to hold the elements */
bin = gst_bin_new ("bin");
g_assert (bin != NULL);
/* create a disk reader */
filesrc = gst_element_factory_make ("filesrc", "disk_source");
g_assert (filesrc != NULL);
g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
g_signal_connect (G_OBJECT (filesrc), "eos", G_CALLBACK (eos), thread);
queue = gst_element_factory_make ("queue", "queue");
/* and an audio sink */
osssink = gst_element_factory_make ("osssink", "play_audio");
g_assert (osssink != NULL);
parse = gst_element_factory_make ("mp3parse", "parse");
decode = gst_element_factory_make ("mpg123", "decode");
/* add objects to the main bin */
gst_bin_add (GST_BIN (bin), filesrc);
gst_bin_add (GST_BIN (bin), queue);
gst_bin_add (GST_BIN (thread), parse);
gst_bin_add (GST_BIN (thread), decode);
gst_bin_add (GST_BIN (thread), osssink);
gst_element_link_many (filesrc, queue, parse, decode, osssink, NULL);
/* make it ready */
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_READY);
/* start playing */
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PLAYING);
playing = TRUE;
while (playing) {
gst_bin_iterate (GST_BIN (bin));
}
gst_element_set_state (GST_ELEMENT (bin), GST_STATE_NULL);
exit (0);
}