gstreamer/examples/seeking/playbin.c
Wim Taymans 28c4ae43b2 examples/seeking/: Added some more examples, update others.
Original commit message from CVS:
* examples/seeking/Makefile.am:
* examples/seeking/cdplayer.c: (update_scale):
* examples/seeking/chained.c: (unlinked), (new_pad), (main):
* examples/seeking/playbin.c: (make_playerbin_pipeline),
(format_value), (update_scale), (iterate), (start_seek),
(stop_seek), (print_media_info), (play_cb), (pause_cb), (stop_cb),
(print_usage), (main):
Added some more examples, update others.
2004-10-25 17:43:51 +00:00

270 lines
7 KiB
C

#include <stdlib.h>
#include <glib.h>
#include <gtk/gtk.h>
#include <gst/gst.h>
#include <string.h>
static GstElement *playbin = NULL;
static GstElement *pipeline;
static guint64 duration;
static GtkAdjustment *adjustment;
static GtkWidget *hscale;
static gboolean verbose = FALSE;
static guint update_id;
#define UPDATE_INTERVAL 500
static GstElement *
make_playerbin_pipeline (const gchar * location)
{
playbin = gst_element_factory_make ("playbin", "player");
g_assert (playbin);
g_object_set (G_OBJECT (playbin), "uri", location, NULL);
return playbin;
}
static gchar *
format_value (GtkScale * scale, gdouble value)
{
gint64 real;
gint64 seconds;
gint64 subseconds;
real = value * duration / 100;
seconds = (gint64) real / GST_SECOND;
subseconds = (gint64) real / (GST_SECOND / 100);
return g_strdup_printf ("%02" G_GINT64_FORMAT ":%02" G_GINT64_FORMAT ":%02"
G_GINT64_FORMAT, seconds / 60, seconds % 60, subseconds % 100);
}
static gboolean
update_scale (gpointer data)
{
GstClock *clock;
guint64 position;
GstFormat format = GST_FORMAT_TIME;
gboolean res;
duration = 0;
clock = gst_bin_get_clock (GST_BIN (pipeline));
res = gst_element_query (playbin, GST_QUERY_TOTAL, &format, &duration);
if (!res)
duration = 0;
res = gst_element_query (playbin, GST_QUERY_POSITION, &format, &position);
if (!res)
position = 0;
if (position >= duration)
duration = position;
if (duration > 0) {
gtk_adjustment_set_value (adjustment, position * 100.0 / duration);
gtk_widget_queue_draw (hscale);
}
return TRUE;
}
static gboolean
iterate (gpointer data)
{
gboolean res;
if (!GST_FLAG_IS_SET (GST_OBJECT (data), GST_BIN_SELF_SCHEDULABLE)) {
res = gst_bin_iterate (GST_BIN (data));
} else {
g_usleep (UPDATE_INTERVAL);
res = gst_element_get_state (GST_ELEMENT (data)) == GST_STATE_PLAYING;
}
if (!res) {
gtk_timeout_remove (update_id);
g_print ("stopping iterations\n");
}
return res;
}
static gboolean
start_seek (GtkWidget * widget, GdkEventButton * event, gpointer user_data)
{
gst_element_set_state (pipeline, GST_STATE_PAUSED);
gtk_timeout_remove (update_id);
return FALSE;
}
static gboolean
stop_seek (GtkWidget * widget, GdkEventButton * event, gpointer user_data)
{
gint64 real = gtk_range_get_value (GTK_RANGE (widget)) * duration / 100;
gboolean res;
GstEvent *s_event;
g_print ("seek to %" G_GINT64_FORMAT " on element %s\n", real,
gst_element_get_name (playbin));
s_event =
gst_event_new_seek (GST_FORMAT_TIME | GST_SEEK_METHOD_SET |
GST_SEEK_FLAG_FLUSH, real);
res = gst_element_send_event (playbin, s_event);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
gtk_idle_add ((GtkFunction) iterate, pipeline);
update_id =
gtk_timeout_add (UPDATE_INTERVAL, (GtkFunction) update_scale, pipeline);
return FALSE;
}
static void
print_media_info (GstElement * playbin)
{
GList *streaminfo;
GList *s;
g_print ("have media info now\n");
/* get info about the stream */
g_object_get (G_OBJECT (playbin), "stream-info", &streaminfo, NULL);
for (s = streaminfo; s; s = g_list_next (s)) {
GObject *obj = G_OBJECT (s->data);
gint type;
gboolean mute;
g_object_get (obj, "type", &type, NULL);
g_object_get (obj, "mute", &mute, NULL);
g_print ("%d %d\n", type, mute);
}
}
static void
play_cb (GtkButton * button, gpointer data)
{
if (gst_element_get_state (pipeline) != GST_STATE_PLAYING) {
GstElementStateReturn res;
res = gst_element_set_state (pipeline, GST_STATE_PAUSED);
if (res == GST_STATE_SUCCESS) {
print_media_info (playbin);
res = gst_element_set_state (pipeline, GST_STATE_PLAYING);
gtk_idle_add ((GtkFunction) iterate, pipeline);
update_id =
gtk_timeout_add (UPDATE_INTERVAL, (GtkFunction) update_scale,
pipeline);
} else {
g_print ("failed playing\n");
}
}
}
static void
pause_cb (GtkButton * button, gpointer data)
{
if (gst_element_get_state (pipeline) != GST_STATE_PAUSED) {
gst_element_set_state (pipeline, GST_STATE_PAUSED);
gtk_timeout_remove (update_id);
}
}
static void
stop_cb (GtkButton * button, gpointer data)
{
if (gst_element_get_state (pipeline) != GST_STATE_READY) {
gst_element_set_state (pipeline, GST_STATE_READY);
gtk_adjustment_set_value (adjustment, 0.0);
gtk_timeout_remove (update_id);
}
}
static void
print_usage (int argc, char **argv)
{
g_print ("usage: %s <uri>\n", argv[0]);
}
int
main (int argc, char **argv)
{
GtkWidget *window, *hbox, *vbox, *play_button, *pause_button, *stop_button;
struct poptOption options[] = {
{"verbose", 'v', POPT_ARG_NONE | POPT_ARGFLAG_STRIP, &verbose, 0,
"Verbose properties", NULL},
POPT_TABLEEND
};
gst_init_with_popt_table (&argc, &argv, options);
gtk_init (&argc, &argv);
if (argc != 2) {
print_usage (argc, argv);
exit (-1);
}
pipeline = make_playerbin_pipeline (argv[1]);
g_assert (pipeline);
/* initialize gui elements ... */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
hbox = gtk_hbox_new (FALSE, 0);
vbox = gtk_vbox_new (FALSE, 0);
play_button = gtk_button_new_with_label ("play");
pause_button = gtk_button_new_with_label ("pause");
stop_button = gtk_button_new_with_label ("stop");
adjustment =
GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.00, 100.0, 0.1, 1.0, 1.0));
hscale = gtk_hscale_new (adjustment);
gtk_scale_set_digits (GTK_SCALE (hscale), 2);
gtk_range_set_update_policy (GTK_RANGE (hscale), GTK_UPDATE_CONTINUOUS);
gtk_signal_connect (GTK_OBJECT (hscale),
"button_press_event", G_CALLBACK (start_seek), pipeline);
gtk_signal_connect (GTK_OBJECT (hscale),
"button_release_event", G_CALLBACK (stop_seek), pipeline);
gtk_signal_connect (GTK_OBJECT (hscale),
"format_value", G_CALLBACK (format_value), pipeline);
/* do the packing stuff ... */
gtk_window_set_default_size (GTK_WINDOW (window), 96, 96);
gtk_container_add (GTK_CONTAINER (window), vbox);
gtk_container_add (GTK_CONTAINER (vbox), hbox);
gtk_box_pack_start (GTK_BOX (hbox), play_button, FALSE, FALSE, 2);
gtk_box_pack_start (GTK_BOX (hbox), pause_button, FALSE, FALSE, 2);
gtk_box_pack_start (GTK_BOX (hbox), stop_button, FALSE, FALSE, 2);
gtk_box_pack_start (GTK_BOX (vbox), hscale, TRUE, TRUE, 2);
/* connect things ... */
g_signal_connect (G_OBJECT (play_button), "clicked", G_CALLBACK (play_cb),
pipeline);
g_signal_connect (G_OBJECT (pause_button), "clicked", G_CALLBACK (pause_cb),
pipeline);
g_signal_connect (G_OBJECT (stop_button), "clicked", G_CALLBACK (stop_cb),
pipeline);
g_signal_connect (G_OBJECT (window), "delete_event", gtk_main_quit, NULL);
/* show the gui. */
gtk_widget_show_all (window);
if (verbose) {
g_signal_connect (pipeline, "deep_notify",
G_CALLBACK (gst_element_default_deep_notify), NULL);
}
g_signal_connect (pipeline, "error", G_CALLBACK (gst_element_default_error),
NULL);
gtk_main ();
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (GST_OBJECT (pipeline));
return 0;
}