gstreamer/examples/queue2/queue2.c
Wim Taymans e5ab7f33ac A first attempt to fix the queues in a cothreaded pipeline.
Original commit message from CVS:
A first attempt to fix the queues in a cothreaded pipeline.
Some fixes to the thread handling.
Fix a bug in gstreamer-config : gthread was not included.
gst_bin_create_plan() is now done in the READY state.
a bin with only another bin in it will now work with gst_bin_iterate.
Added some examples for the queues.
2000-09-22 23:35:14 +00:00

81 lines
2 KiB
C

#include <gst/gst.h>
gboolean playing;
/* eos will be called when the src element has an end of stream */
void eos(GstSrc *src, gpointer data)
{
g_print("have eos, quitting\n");
playing = FALSE;
}
int main(int argc,char *argv[])
{
GstElement *disksrc, *audiosink, *queue;
GstElement *pipeline;
GstElement *thread;
if (argc != 2) {
g_print("usage: %s <filename>\n", argv[0]);
exit(-1);
}
gst_init(&argc,&argv);
/* 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 */
pipeline = gst_pipeline_new("pipeline");
g_assert(pipeline != NULL);
/* create a disk reader */
disksrc = gst_elementfactory_make("disksrc", "disk_source");
g_assert(disksrc != NULL);
gtk_object_set(GTK_OBJECT(disksrc),"location", argv[1],NULL);
gtk_signal_connect(GTK_OBJECT(disksrc),"eos",
GTK_SIGNAL_FUNC(eos), thread);
queue = gst_elementfactory_make("queue", "queue");
/* and an audio sink */
audiosink = gst_elementfactory_make("audiosink", "play_audio");
g_assert(audiosink != NULL);
/* add objects to the main pipeline */
gst_pipeline_add_src(GST_PIPELINE(pipeline), disksrc);
gst_pipeline_add_sink(GST_PIPELINE(pipeline), queue);
gst_bin_add(GST_BIN(thread), audiosink);
gst_pad_connect(gst_element_get_pad(queue,"src"),
gst_element_get_pad(audiosink,"sink"));
gst_pad_set_type_id(gst_element_get_pad(queue, "sink"),
gst_pad_get_type_id(gst_element_get_pad(audiosink, "sink")));
if (!gst_pipeline_autoplug(GST_PIPELINE(pipeline))) {
g_print("cannot autoplug pipeline\n");
exit(-1);
}
gst_bin_add(GST_BIN(pipeline), thread);
/* make it ready */
gst_element_set_state(GST_ELEMENT(pipeline), GST_STATE_READY);
/* start playing */
gst_element_set_state(GST_ELEMENT(pipeline), GST_STATE_PLAYING);
playing = TRUE;
while (playing) {
gst_bin_iterate(GST_BIN(pipeline));
}
gst_element_set_state(GST_ELEMENT(pipeline), GST_STATE_NULL);
exit(0);
}