mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-03 05:05:52 +00:00
123 lines
3 KiB
C
123 lines
3 KiB
C
#include <gst/gst.h>
|
|
#include <string.h>
|
|
|
|
#ifdef __APPLE__
|
|
#include <TargetConditionals.h>
|
|
#endif
|
|
|
|
typedef struct _CustomData
|
|
{
|
|
gboolean is_live;
|
|
GstElement *pipeline;
|
|
GMainLoop *loop;
|
|
} CustomData;
|
|
|
|
static void
|
|
cb_message (GstBus * bus, GstMessage * msg, CustomData * data)
|
|
{
|
|
|
|
switch (GST_MESSAGE_TYPE (msg)) {
|
|
case GST_MESSAGE_ERROR:{
|
|
GError *err;
|
|
gchar *debug;
|
|
|
|
gst_message_parse_error (msg, &err, &debug);
|
|
g_print ("Error: %s\n", err->message);
|
|
g_error_free (err);
|
|
g_free (debug);
|
|
|
|
gst_element_set_state (data->pipeline, GST_STATE_READY);
|
|
g_main_loop_quit (data->loop);
|
|
break;
|
|
}
|
|
case GST_MESSAGE_EOS:
|
|
/* end-of-stream */
|
|
gst_element_set_state (data->pipeline, GST_STATE_READY);
|
|
g_main_loop_quit (data->loop);
|
|
break;
|
|
case GST_MESSAGE_BUFFERING:{
|
|
gint percent = 0;
|
|
|
|
/* If the stream is live, we do not care about buffering. */
|
|
if (data->is_live)
|
|
break;
|
|
|
|
gst_message_parse_buffering (msg, &percent);
|
|
g_print ("Buffering (%3d%%)\r", percent);
|
|
/* Wait until buffering is complete before start/resume playing */
|
|
if (percent < 100)
|
|
gst_element_set_state (data->pipeline, GST_STATE_PAUSED);
|
|
else
|
|
gst_element_set_state (data->pipeline, GST_STATE_PLAYING);
|
|
break;
|
|
}
|
|
case GST_MESSAGE_CLOCK_LOST:
|
|
/* Get a new clock */
|
|
gst_element_set_state (data->pipeline, GST_STATE_PAUSED);
|
|
gst_element_set_state (data->pipeline, GST_STATE_PLAYING);
|
|
break;
|
|
default:
|
|
/* Unhandled message */
|
|
break;
|
|
}
|
|
}
|
|
|
|
int
|
|
tutorial_main (int argc, char *argv[])
|
|
{
|
|
GstElement *pipeline;
|
|
GstBus *bus;
|
|
GstStateChangeReturn ret;
|
|
GMainLoop *main_loop;
|
|
CustomData data;
|
|
|
|
/* Initialize GStreamer */
|
|
gst_init (&argc, &argv);
|
|
|
|
/* Initialize our data structure */
|
|
memset (&data, 0, sizeof (data));
|
|
|
|
/* Build the pipeline */
|
|
pipeline =
|
|
gst_parse_launch
|
|
("playbin uri=https://gstreamer.freedesktop.org/data/media/sintel_trailer-480p.webm",
|
|
NULL);
|
|
bus = gst_element_get_bus (pipeline);
|
|
|
|
/* Start playing */
|
|
ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
|
|
if (ret == GST_STATE_CHANGE_FAILURE) {
|
|
g_printerr ("Unable to set the pipeline to the playing state.\n");
|
|
gst_object_unref (pipeline);
|
|
return -1;
|
|
} else if (ret == GST_STATE_CHANGE_NO_PREROLL) {
|
|
data.is_live = TRUE;
|
|
}
|
|
|
|
main_loop = g_main_loop_new (NULL, FALSE);
|
|
data.loop = main_loop;
|
|
data.pipeline = pipeline;
|
|
|
|
gst_bus_add_signal_watch (bus);
|
|
g_signal_connect (bus, "message", G_CALLBACK (cb_message), &data);
|
|
|
|
g_main_loop_run (main_loop);
|
|
|
|
/* Free resources */
|
|
g_main_loop_unref (main_loop);
|
|
gst_object_unref (bus);
|
|
gst_element_set_state (pipeline, GST_STATE_NULL);
|
|
gst_object_unref (pipeline);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
#if defined(__APPLE__) && TARGET_OS_MAC && !TARGET_OS_IPHONE
|
|
return gst_macos_main (tutorial_main, argc, argv, NULL);
|
|
#else
|
|
return tutorial_main (argc, argv);
|
|
#endif
|
|
}
|