mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-18 14:26:43 +00:00
ba5cecf321
Original commit message from CVS: * examples/Makefile.am: * examples/helloworld/helloworld.c: (event_loop), (main): * examples/queue/queue.c: (event_loop), (main): * examples/queue2/queue2.c: (main): Update a couple of the examples to work again. * gst/base/gstbasesink.c: (gst_base_sink_preroll_queue_empty), (gst_base_sink_preroll_queue_flush), (gst_base_sink_handle_event): Spelling corrections and extra debug. * gst/gstbin.c: (gst_bin_class_init), (gst_bin_init), (is_eos), (gst_bin_add_func), (bin_element_is_sink), (gst_bin_get_state), (gst_bin_change_state), (gst_bin_dispose), (bin_bus_handler): * gst/gstbin.h: * gst/gstpipeline.c: (gst_pipeline_init), (gst_pipeline_dispose), (gst_pipeline_change_state): * gst/gstpipeline.h: Move the bus handler for children to the GstBin, and create a separate bus for receiving messages from children to the one the bus sends 'upwards' on.
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
#include <stdlib.h>
|
|
#include <gst/gst.h>
|
|
|
|
static void
|
|
event_loop (GstElement * pipe)
|
|
{
|
|
GstBus *bus;
|
|
GstMessageType revent;
|
|
GstMessage *message = NULL;
|
|
|
|
bus = gst_element_get_bus (GST_ELEMENT (pipe));
|
|
|
|
while (TRUE) {
|
|
revent = gst_bus_poll (bus, GST_MESSAGE_ANY, -1);
|
|
|
|
message = gst_bus_pop (bus);
|
|
g_assert (message != NULL);
|
|
|
|
switch (revent) {
|
|
case GST_MESSAGE_EOS:
|
|
gst_message_unref (message);
|
|
return;
|
|
case GST_MESSAGE_WARNING:
|
|
case GST_MESSAGE_ERROR:{
|
|
GError *gerror;
|
|
gchar *debug;
|
|
|
|
gst_message_parse_error (message, &gerror, &debug);
|
|
gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug);
|
|
gst_message_unref (message);
|
|
g_error_free (gerror);
|
|
g_free (debug);
|
|
return;
|
|
}
|
|
default:
|
|
gst_message_unref (message);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
GstElement *bin, *filesrc, *decoder, *audiosink;
|
|
|
|
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 */
|
|
audiosink = gst_element_factory_make ("alsasink", "play_audio");
|
|
g_assert (audiosink);
|
|
|
|
/* add objects to the main pipeline */
|
|
gst_bin_add_many (GST_BIN (bin), filesrc, decoder, audiosink, NULL);
|
|
|
|
/* link the elements */
|
|
gst_element_link_many (filesrc, decoder, audiosink, NULL);
|
|
|
|
/* start playing */
|
|
gst_element_set_state (bin, GST_STATE_PLAYING);
|
|
|
|
/* Run event loop listening for bus messages until EOS or ERROR */
|
|
event_loop (bin);
|
|
|
|
/* stop the bin */
|
|
gst_element_set_state (bin, GST_STATE_NULL);
|
|
|
|
exit (0);
|
|
}
|