mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-30 21:51:09 +00:00
117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
#include <glib.h>
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#include <gtk/gtk.h>
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#include <gst/gst.h>
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static GstElement *src, *mad, *osssink, *pipeline;
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static void
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set_seek (GtkAdjustment *adj, gpointer data)
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{
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g_print ("%f\n", adj->value);
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gst_pad_send_event (gst_element_get_pad (mad, "src"),
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gst_event_new_seek (GST_SEEK_BYTEOFFSET_SET, adj->value*1000, TRUE));
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}
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static void
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play_cb (GtkButton * button, gpointer data)
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{
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GstElement *pipeline = GST_ELEMENT (data);
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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gtk_idle_add ((GtkFunction) gst_bin_iterate, pipeline);
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}
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static void
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pause_cb (GtkButton * button, gpointer data)
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{
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GstElement *pipeline = GST_ELEMENT (data);
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gst_element_set_state (pipeline, GST_STATE_PAUSED);
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}
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static void
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stop_cb (GtkButton * button, gpointer data)
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{
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GstElement *pipeline = GST_ELEMENT (data);
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gst_element_set_state (pipeline, GST_STATE_READY);
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}
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int
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main (int argc, char **argv)
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{
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guint channels;
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GtkWidget *window, *hbox, *play_button, *pause_button, *stop_button, *quit_button, *hscale;
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gst_init (&argc, &argv);
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gtk_init (&argc, &argv);
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if (argc != 2) {
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g_print ("usage: %s <mp3-filename>\n", argv[0]);
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exit (-1);
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}
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src = gst_element_factory_make ("filesrc", "filesrc");
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mad = gst_element_factory_make ("mad", "mad");
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osssink = gst_element_factory_make ("osssink", "osssink");
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g_object_set (G_OBJECT (src), "location", argv[1], NULL);
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g_object_set (G_OBJECT (osssink), "fragment", 0x00180008, NULL);
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g_object_get (G_OBJECT (osssink), "channels", &channels, NULL);
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pipeline = gst_pipeline_new ("app");
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gst_bin_add (GST_BIN (pipeline), src);
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gst_bin_add (GST_BIN (pipeline), mad);
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gst_bin_add (GST_BIN (pipeline), osssink);
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gst_element_connect (src, mad);
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gst_element_connect (mad, osssink);
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/* initialize gui elements ... */
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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hbox = gtk_hbox_new (FALSE, 0);
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play_button = gtk_button_new_with_label ("play");
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pause_button = gtk_button_new_with_label ("pause");
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stop_button = gtk_button_new_with_label ("stop");
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quit_button = gtk_button_new_with_label ("quit");
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hscale = gtk_hscale_new (GTK_ADJUSTMENT (gtk_adjustment_new (1.0, 0.01, 100.0, 0.1, 0.0, 0.0)));
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gtk_scale_set_digits (GTK_SCALE (hscale), 2);
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gtk_range_set_update_policy (GTK_RANGE (hscale), GTK_UPDATE_CONTINUOUS);
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gtk_signal_connect(GTK_OBJECT(gtk_range_get_adjustment(GTK_RANGE(hscale))),
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"value_changed", G_CALLBACK (set_seek), osssink);
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/* do the packing stuff ... */
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gtk_window_set_default_size (GTK_WINDOW (window), 96, 96);
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gtk_container_add (GTK_CONTAINER (window), hbox);
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gtk_box_pack_start (GTK_BOX (hbox), play_button, FALSE, FALSE, 2);
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gtk_box_pack_start (GTK_BOX (hbox), pause_button, FALSE, FALSE, 2);
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gtk_box_pack_start (GTK_BOX (hbox), stop_button, FALSE, FALSE, 2);
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gtk_box_pack_start (GTK_BOX (hbox), quit_button, FALSE, FALSE, 2);
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gtk_box_pack_start (GTK_BOX (hbox), hscale, TRUE, TRUE, 2);
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/* connect things ... */
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g_signal_connect (G_OBJECT (play_button), "clicked", G_CALLBACK (play_cb), pipeline);
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g_signal_connect (G_OBJECT (pause_button), "clicked", G_CALLBACK (pause_cb), pipeline);
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g_signal_connect (G_OBJECT (stop_button), "clicked", G_CALLBACK (stop_cb), pipeline);
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g_signal_connect (G_OBJECT (quit_button), "clicked", gtk_main_quit, NULL);
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/* show the gui. */
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gtk_widget_show (play_button);
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gtk_widget_show (pause_button);
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gtk_widget_show (stop_button);
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gtk_widget_show (quit_button);
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gtk_widget_show (hscale);
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gtk_widget_show (hbox);
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gtk_widget_show (window);
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gtk_main ();
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return 0;
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}
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