1 /* vim: set sts=2 sw=2 et: */
3 * Copyright (C) 2006 Josep Torra <j.torra@telefonica.net>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
26 #define TUNER_VERSION "0.4"
30 # include <hildon/hildon-defines.h>
31 # include <hildon/hildon-program.h>
32 # include <hildon/hildon-number-editor.h>
33 # elif defined(MAEMO1)
34 # include <hildon-widgets/hildon-app.h>
35 # include <hildon-widgets/hildon-appview.h>
37 # include <hildon-widgets/hildon-program.h>
42 #define OSSO_PACKAGE "tuner-tool"
43 #define OSSO_VERSION TUNER_VERSION
45 #endif /* ifdef HILDON */
48 # define DEFAULT_AUDIOSRC "dsppcmsrc"
49 # define DEFAULT_AUDIOSINK "dsppcmsink"
51 # define DEFAULT_AUDIOSRC "alsasrc"
52 # define DEFAULT_AUDIOSINK "alsasink"
60 #include <gconf/gconf-client.h>
65 #define between(x,a,b) (((x)>=(a)) && ((x)<=(b)))
67 #define MAGIC (1.059463094359f) /* 2^(1/2) */
69 extern gboolean plugin_pitch_init (GstPlugin * plugin);
70 extern gboolean plugin_tonesrc_init (GstPlugin * plugin);
80 GtkWidget *targetFrequency;
81 GtkWidget *currentFrequency;
82 GtkWidget *drawingarea1;
83 GtkWidget *drawingarea2;
91 gboolean display_keepalive;
93 osso_context_t *osso_context;
95 guint display_timer_id;
99 typedef struct app_data AppData;
113 #define NUM_LEDS (66)
114 #define NUM_WKEYS (15) /* # of white keys in the piano keyboard */
115 #define WKEY_WIDTH (45)
117 static Note equal_tempered_scale[] = {
191 {"C#6/Db6", 1108.73},
193 {"D#6/Eb6", 1244.51},
196 {"F#6/Gb6", 1479.98},
198 {"G#6/Ab6", 1661.22},
200 {"A#6/Bb6", 1864.66},
203 {"C#7/Db7", 2217.46},
205 {"D#7/Eb7", 2489.02},
208 {"F#7/Gb7", 2959.96},
210 {"G#7/Ab7", 3322.44},
212 {"A#7/Bb7", 3729.31},
216 static GdkColor ledOnColor = { 0, 0 * 255, 180 * 255, 95 * 255 };
217 static GdkColor ledOnColor2 = { 0, 180 * 255, 180 * 255, 0 * 255 };
218 static GdkColor ledOffColor = { 0, 80 * 255, 80 * 255, 80 * 255 };
221 recalculate_scale (double a4)
225 for (i = 0; i < NUM_NOTES; i++) {
226 equal_tempered_scale[i].frequency = a4 * pow (MAGIC, i - 57);
227 /* fprintf(stdout, "%s: %.2f\n", equal_tempered_scale[i].name, equal_tempered_scale[i].frequency); */
233 fix_hildon_number_editor (GtkWidget * widget, gpointer data)
235 if (GTK_IS_EDITABLE (widget)) {
236 gtk_editable_set_editable (GTK_EDITABLE (widget), FALSE);
237 g_object_set (G_OBJECT (widget), "can-focus", FALSE, NULL);
243 calibration_changed (GObject * object, GParamSpec * pspec, gpointer user_data)
248 value = hildon_number_editor_get_value (HILDON_NUMBER_EDITOR (object));
250 value = gtk_spin_button_get_value (GTK_SPIN_BUTTON (object));
253 if (value >= CALIB_MIN && value <= CALIB_MAX) {
254 recalculate_scale (value);
255 settings_set_calibration (value);
260 on_window_destroy (GtkObject * object, gpointer user_data)
266 toggle_fullscreen (GtkWindow * window)
268 static gboolean fullscreen = FALSE;
270 fullscreen = !fullscreen;
272 gtk_window_fullscreen (GTK_WINDOW (window));
274 gtk_window_unfullscreen (GTK_WINDOW (window));
278 key_press_event (GtkWidget * widget, GdkEventKey * event, GtkWindow * window)
280 switch (event->keyval) {
282 case HILDON_HARDKEY_FULLSCREEN:
283 toggle_fullscreen (window);
294 draw_leds (AppData * appdata, gint n)
297 static GdkGC *gc = NULL;
298 gint width = appdata->drawingarea1->allocation.width;
299 gint led_width = ((gfloat) width / (gfloat) (NUM_LEDS)) * 0.8;
300 gint led_space = ((gfloat) width / (gfloat) (NUM_LEDS)) * 0.2;
301 gint led_total = led_width + led_space;
302 gint padding = (width - NUM_LEDS * led_total) / 2;
305 gc = gdk_gc_new (appdata->drawingarea1->window);
307 gdk_gc_set_rgb_fg_color (gc, &appdata->drawingarea1->style->fg[0]);
309 gdk_draw_rectangle (appdata->drawingarea1->window, gc, TRUE, 0, 0,
310 appdata->drawingarea1->allocation.width, appdata->drawingarea1->allocation.height);
312 if (abs (n) > (NUM_LEDS / 2))
313 n = n / n * (NUM_LEDS / 2);
316 j = NUM_LEDS / 2 + 1;
317 k = NUM_LEDS / 2 + n;
319 j = NUM_LEDS / 2 + n;
320 k = NUM_LEDS / 2 - 1;
324 for (i = 0; i < NUM_LEDS; i++) {
325 if (i == NUM_LEDS / 2) {
327 gdk_gc_set_rgb_fg_color (gc, &ledOnColor2);
329 gdk_gc_set_rgb_fg_color (gc, &ledOffColor);
331 gdk_draw_rectangle (appdata->drawingarea1->window, gc, TRUE, padding + (i * led_total) + ((led_total - 4) / 2), 2, 4,
334 if ((i >= j) && (i <= k))
335 gdk_gc_set_rgb_fg_color (gc, &ledOnColor);
337 gdk_gc_set_rgb_fg_color (gc, &ledOffColor);
339 gdk_draw_rectangle (appdata->drawingarea1->window, gc, TRUE, padding + (i * led_total), 10, led_width,
345 /* update frequency info */
347 update_frequency (AppData * appdata, gint frequency)
351 gfloat diff, min_diff;
353 min_diff = frequency - (equal_tempered_scale[0].frequency - 10);
354 for (i = j = 0; i < NUM_NOTES; i++) {
355 diff = frequency - equal_tempered_scale[i].frequency;
356 if (fabs (diff) <= fabs (min_diff)) {
365 g_strdup_printf ("Nearest note is %s with %.2f Hz frequency",
366 equal_tempered_scale[j].name, equal_tempered_scale[j].frequency);
367 gtk_label_set_text (GTK_LABEL (appdata->targetFrequency), buffer);
370 buffer = g_strdup_printf ("Played frequency is %d Hz", frequency);
371 gtk_label_set_text (GTK_LABEL (appdata->currentFrequency), buffer);
374 draw_leds (appdata, (gint) roundf (min_diff));
377 /* receive spectral data from element message */
379 message_handler (GstBus * bus, GstMessage * message, gpointer data)
381 if (message->type == GST_MESSAGE_ELEMENT) {
382 const GstStructure *s = gst_message_get_structure (message);
383 const gchar *name = gst_structure_get_name (s);
385 if (strcmp (name, "pitch") == 0) {
388 frequency = g_value_get_int (gst_structure_get_value (s, "frequency"));
389 update_frequency (data, frequency);
392 /* we handled the message we want, and ignored the ones we didn't want.
393 * so the core can unref the message for us */
398 keynote2freq (AppData * appdata, gint x, gint y)
400 gint i, j, height, found;
401 gfloat frequency = 0;
403 height = appdata->drawingarea2->allocation.height;
407 for (i = 0; i < NUM_WKEYS; i++) {
408 // Test for a white key
410 if (between (x, i * WKEY_WIDTH, i * WKEY_WIDTH + (WKEY_WIDTH - 1)) && between (y, 0, height))
412 // Test for a black key
413 if (((i % 7) != 2) && ((i % 7) != 6) && (i != 14)) {
415 if (between (x, 24 + i * 45, 24 + i * 45 + 42)
416 && between (y, 0, height / 2))
420 frequency = equal_tempered_scale[48 + found - 1].frequency;
428 expose_event (GtkWidget * widget, GdkEventExpose * event, gpointer user_data)
430 AppData * appdata = (AppData *) user_data;
432 static GdkGC *gc = NULL;
435 gc = gdk_gc_new (appdata->drawingarea2->window);
437 gdk_gc_set_rgb_fg_color (gc, &appdata->drawingarea2->style->fg[0]);
439 gdk_draw_rectangle (appdata->drawingarea2->window, gc, FALSE, 0, 0,
440 NUM_WKEYS * WKEY_WIDTH, appdata->drawingarea2->allocation.height - 1);
442 for (i = 0; i < NUM_WKEYS - 1; i++)
443 gdk_draw_rectangle (appdata->drawingarea2->window, gc, FALSE, i * WKEY_WIDTH, 0,
444 WKEY_WIDTH, appdata->drawingarea2->allocation.height - 1);
446 for (i = 0; i < NUM_WKEYS - 1; i++) {
447 if (((i % 7) != 2) && ((i % 7) != 6))
448 gdk_draw_rectangle (appdata->drawingarea2->window, gc, TRUE, 24 + i * WKEY_WIDTH, 0,
449 42, appdata->drawingarea2->allocation.height / 2);
455 button_press_event (GtkWidget * widget, GdkEventButton * event, gpointer user_data)
457 AppData * appdata = (AppData *) user_data;
459 if (event->button == 1) {
460 g_object_set (appdata->tonesrc, "freq", (gdouble) keynote2freq (appdata, event->x, event->y),
461 "volume", 0.8, NULL);
468 button_release_event (GtkWidget * widget, GdkEventButton * event,
471 AppData * appdata = (AppData *) user_data;
473 if (event->button == 1) {
474 g_object_set (appdata->tonesrc, "volume", 0.0, NULL);
481 set_pipeline_states (AppData * appdata, GstState state)
484 gst_element_set_state (appdata->bin1, state);
487 gst_element_set_state (appdata->bin2, state);
491 stop_pipelines (gpointer user_data)
493 AppData * appdata = (AppData *) user_data;
495 /* dsppcmsrc needs to go to READY or NULL state to make
496 * the DSP sleep and OMAP reach retention mode */
497 set_pipeline_states (appdata, GST_STATE_READY);
498 appdata->stop_timer_id = 0;
505 osso_hw_state_cb (osso_hw_state_t *state, gpointer user_data)
507 AppData * appdata = (AppData *) user_data;
509 if (state->shutdown_ind) {
514 if (state->system_inactivity_ind) {
515 /* do not stop pipelines if the app is on foreground
516 * and display is kept on */
517 if (appdata->display_timer_id == 0) {
518 if (appdata->stop_timer_id != 0)
519 g_source_remove (appdata->stop_timer_id);
521 appdata->stop_timer_id = g_timeout_add (5000, (GSourceFunc) stop_pipelines, user_data);
526 if (hildon_program_get_is_topmost (HILDON_PROGRAM (appdata->app))) {
527 if (appdata->stop_timer_id != 0) {
528 g_source_remove (appdata->stop_timer_id);
529 appdata->stop_timer_id = 0;
532 set_pipeline_states (appdata, GST_STATE_PLAYING);
534 /* not topmost => topmost_notify will set pipelines to PLAYING
535 * when the application is on the foreground again */
537 if (appdata->stop_timer_id != 0) {
538 g_source_remove (appdata->stop_timer_id);
539 appdata->stop_timer_id = 0;
542 set_pipeline_states (appdata, GST_STATE_PLAYING);
551 display_keepalive (gpointer user_data)
553 AppData * appdata = (AppData *) user_data;
555 /* first (direct) call: call blanking_pause and set up timer */
556 if (appdata->display_timer_id == 0) {
557 osso_display_blanking_pause (appdata->osso_context);
558 appdata->display_timer_id = g_timeout_add (55000, (GSourceFunc) display_keepalive, user_data);
559 return TRUE; /* does not really matter */
562 /* callback from main loop */
563 if (hildon_program_get_is_topmost (HILDON_PROGRAM (appdata->app))) {
564 osso_display_blanking_pause (appdata->osso_context);
568 appdata->display_timer_id = 0;
573 display_keepalive_stop (AppData * appdata)
575 if (appdata->display_timer_id) {
576 g_source_remove (appdata->display_timer_id);
577 appdata->display_timer_id = 0;
582 topmost_notify (GObject * object, GParamSpec * pspec, gpointer user_data)
584 AppData * appdata = (AppData *) user_data;
586 if (hildon_program_get_is_topmost (HILDON_PROGRAM (object))) {
587 /* cancel pipeline stop timer if it is ticking */
588 if (appdata->stop_timer_id != 0) {
589 g_source_remove (appdata->stop_timer_id);
590 appdata->stop_timer_id = 0;
593 set_pipeline_states (appdata, GST_STATE_PLAYING);
595 /* keep display on */
596 if (appdata->display_keepalive && appdata->display_timer_id == 0)
597 display_keepalive (user_data);
600 /* pause pipelines so that we don't update the UI needlessly */
601 set_pipeline_states (appdata, GST_STATE_PAUSED);
602 /* stop pipelines fully if the app stays in the background for 30 seconds */
603 appdata->stop_timer_id = g_timeout_add (30000, (GSourceFunc) stop_pipelines, user_data);
604 /* let display dim and switch off */
605 display_keepalive_stop (appdata);
613 settings_notify (GConfClient * client, guint cnxn_id, GConfEntry * entry, gpointer user_data)
615 AppData * appdata = (AppData *) user_data;
617 g_debug ("%s changed", gconf_entry_get_key (entry));
619 if (strcmp (gconf_entry_get_key (entry), GCONF_KEY_ALGORITHM) == 0) {
620 if (gconf_entry_get_value (entry) != NULL && gconf_entry_get_value (entry)->type == GCONF_VALUE_INT) {
621 g_object_set (G_OBJECT (appdata->pitch),
622 "algorithm", gconf_value_get_int (gconf_entry_get_value (entry)),
626 else if (strcmp (gconf_entry_get_key (entry), GCONF_KEY_CALIBRATION) == 0) {
629 else if (strcmp (gconf_entry_get_key (entry), GCONF_KEY_DISPLAY_KEEPALIVE) == 0) {
630 if (gconf_entry_get_value (entry) != NULL && gconf_entry_get_value (entry)->type == GCONF_VALUE_BOOL) {
631 appdata->display_keepalive = gconf_value_get_bool (gconf_entry_get_value (entry));
633 if (appdata->display_keepalive && appdata->display_timer_id == 0)
634 display_keepalive (user_data);
636 display_keepalive_stop (appdata);
640 g_warning ("unknown GConf key `%s'", gconf_entry_get_key (entry));
645 main (int argc, char *argv[])
647 AppData * appdata = NULL;
650 HildonApp *app = NULL;
651 HildonAppView *view = NULL;
653 HildonProgram *app = NULL;
654 HildonWindow *view = NULL;
656 osso_hw_state_t hw_state_mask = { TRUE, FALSE, FALSE, TRUE, 0 };
660 GstElement *src1, *src2, *sink1;
668 GtkWidget *alignment;
669 GtkWidget *calibrate;
673 GdkPixbuf *icon = NULL;
674 GError *error = NULL;
676 gboolean piano_enabled = TRUE;
678 appdata = g_new0(AppData, 1);
681 gst_init (&argc, &argv);
682 /* Register the GStreamer plugins */
683 plugin_pitch_init (NULL);
684 plugin_tonesrc_init (NULL);
687 /* Init the gtk - must be called before any hildon stuff */
688 gtk_init (&argc, &argv);
692 /* Create the hildon application and setup the title */
693 app = HILDON_APP (hildon_app_new ());
694 hildon_app_set_title (app, "Tuner Tool");
695 hildon_app_set_two_part_title (app, TRUE);
697 app = HILDON_PROGRAM (hildon_program_get_instance ());
698 g_set_application_name ("Tuner Tool");
703 /* Initialize maemo application */
704 appdata->osso_context = osso_initialize (OSSO_PACKAGE, OSSO_VERSION, TRUE, NULL);
706 /* Check that initialization was ok */
707 if (appdata->osso_context == NULL) {
708 g_print ("Bummer, osso failed\n");
710 g_assert (appdata->osso_context);
712 /* could use also display_event_cb but it is available only from chinook onwards */
713 if (osso_hw_set_event_cb (appdata->osso_context, &hw_state_mask, osso_hw_state_cb, appdata) != OSSO_OK)
714 g_warning ("setting osso_hw_state_cb failed!");
716 settings_init (&settings_notify, appdata);
718 calib = settings_get_calibration (CALIB_DEFAULT);
719 recalculate_scale (calib);
721 mainBox = gtk_vbox_new (FALSE, 0);
722 gtk_container_set_border_width (GTK_CONTAINER (mainBox), 0);
724 view = HILDON_APPVIEW (hildon_appview_new ("Tuner"));
725 hildon_appview_set_fullscreen_key_allowed (view, TRUE);
726 mainWin = GTK_WIDGET (app);
728 view = HILDON_WINDOW (hildon_window_new ());
729 mainWin = GTK_WIDGET (view);
730 g_signal_connect (G_OBJECT (app), "notify::is-topmost", G_CALLBACK (topmost_notify), appdata);
733 mainWin = gtk_window_new (GTK_WINDOW_TOPLEVEL);
734 gtk_window_set_title (GTK_WINDOW (mainWin), "Tuner " TUNER_VERSION);
735 icon = gdk_pixbuf_new_from_file ("tuner64.png", &error);
737 g_print ("Setting icon\n");
738 gtk_window_set_icon (GTK_WINDOW (mainWin), icon);
740 mainBox = gtk_vbox_new (FALSE, 0);
741 gtk_container_set_border_width (GTK_CONTAINER (mainBox), 0);
744 /* Bin for tuner functionality */
745 appdata->bin1 = gst_pipeline_new ("bin1");
747 src1 = gst_element_factory_make (DEFAULT_AUDIOSRC, "src1");
748 appdata->pitch = gst_element_factory_make ("pitch", "pitch");
750 g_object_set (G_OBJECT (appdata->pitch), "message", TRUE, "minfreq", 10,
752 "algorithm", settings_get_algorithm (GST_PITCH_ALGORITHM_FFT),
755 sink1 = gst_element_factory_make ("fakesink", "sink1");
756 g_object_set (G_OBJECT (sink1), "silent", 1, NULL);
758 gst_bin_add_many (GST_BIN (appdata->bin1), src1, appdata->pitch, sink1, NULL);
759 if (!gst_element_link_many (src1, appdata->pitch, sink1, NULL)) {
760 fprintf (stderr, "cant link elements\n");
764 bus = gst_element_get_bus (appdata->bin1);
765 gst_bus_add_watch (bus, message_handler, appdata);
766 gst_object_unref (bus);
768 /* Bin for piano functionality */
769 appdata->bin2 = gst_pipeline_new ("bin2");
771 //src2 = gst_element_factory_make ("audiotestsrc", "src2");
772 //g_object_set (G_OBJECT (src2), "volume", 0.0, "wave", 7, NULL);
773 src2 = gst_element_factory_make ("tonesrc", "src2");
774 g_object_set (G_OBJECT (src2), "volume", 0.0, NULL);
775 sink2 = gst_element_factory_make (DEFAULT_AUDIOSINK, "sink2");
777 gst_bin_add_many (GST_BIN (appdata->bin2), src2, sink2, NULL);
778 if (!gst_element_link_many (src2, sink2, NULL)) {
779 piano_enabled = FALSE;
782 appdata->tonesrc = src2;
785 g_signal_connect (G_OBJECT (mainWin), "destroy",
786 G_CALLBACK (on_window_destroy), NULL);
787 g_signal_connect (G_OBJECT(mainWin), "key_press_event",
788 G_CALLBACK(key_press_event), mainWin);
791 appdata->targetFrequency = gtk_label_new ("");
792 gtk_box_pack_start (GTK_BOX (mainBox), appdata->targetFrequency, FALSE, FALSE, 5);
795 appdata->drawingarea1 = gtk_drawing_area_new ();
796 gtk_widget_set_size_request (appdata->drawingarea1, 636, 40);
797 gtk_box_pack_start (GTK_BOX (mainBox), appdata->drawingarea1, FALSE, FALSE, 5);
799 /* Current frequency lable */
800 appdata->currentFrequency = gtk_label_new ("");
801 gtk_box_pack_start (GTK_BOX (mainBox), appdata->currentFrequency, FALSE, FALSE, 5);
803 /* Calibration spinner */
804 box = gtk_hbox_new (FALSE, 0);
805 alignment = gtk_alignment_new (0.5, 0.5, 0, 0);
806 label = gtk_label_new ("Calibration");
807 gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 5);
810 calibrate = hildon_number_editor_new (CALIB_MIN, CALIB_MAX);
811 hildon_number_editor_set_value (HILDON_NUMBER_EDITOR (calibrate),
813 /* we don't want that ugly cursor there */
814 gtk_container_forall (GTK_CONTAINER (calibrate),
815 (GtkCallback) fix_hildon_number_editor, NULL);
816 g_signal_connect (G_OBJECT (calibrate), "notify::value",
817 G_CALLBACK (calibration_changed), NULL);
819 calibrate = gtk_spin_button_new_with_range (CALIB_MIN, CALIB_MAX, 1);
820 gtk_spin_button_set_value (GTK_SPIN_BUTTON (calibrate), calib);
821 g_signal_connect (G_OBJECT (calibrate), "value_changed",
822 G_CALLBACK (calibration_changed), NULL);
824 gtk_box_pack_start (GTK_BOX (box), calibrate, FALSE, FALSE, 5);
825 gtk_container_add (GTK_CONTAINER (alignment), box);
826 gtk_box_pack_start (GTK_BOX (mainBox), alignment, FALSE, FALSE, 5);
829 sep = gtk_hseparator_new ();
832 gtk_box_pack_start (GTK_BOX (mainBox), sep, FALSE, FALSE, 5);
834 label = gtk_label_new ("Tuner Tool developed by Josep Torra.\n"
835 "http://n770galaxy.blogspot.com/");
836 gtk_box_pack_start (GTK_BOX (mainBox), label, FALSE, FALSE, 5);
839 alignment = gtk_alignment_new (0.5, 0.5, 0, 0);
840 appdata->drawingarea2 = gtk_drawing_area_new ();
841 gtk_widget_set_size_request (appdata->drawingarea2, NUM_WKEYS * WKEY_WIDTH + 1, 130);
842 gtk_container_add (GTK_CONTAINER (alignment), appdata->drawingarea2);
843 gtk_box_pack_start (GTK_BOX (mainBox), alignment, FALSE, FALSE, 5);
845 g_signal_connect (G_OBJECT (appdata->drawingarea2), "expose_event",
846 G_CALLBACK (expose_event), appdata);
848 g_signal_connect (G_OBJECT (appdata->drawingarea2), "button_press_event",
849 G_CALLBACK (button_press_event), (gpointer) appdata);
851 g_signal_connect (G_OBJECT (appdata->drawingarea2), "button_release_event",
852 G_CALLBACK (button_release_event), (gpointer) appdata);
854 gtk_widget_set_events (appdata->drawingarea2, GDK_EXPOSURE_MASK
855 | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);
857 gtk_widget_set_events (appdata->drawingarea2, GDK_EXPOSURE_MASK);
860 gtk_container_add (GTK_CONTAINER (view), mainBox);
862 hildon_app_set_appview (app, view);
863 gtk_widget_show_all (GTK_WIDGET (app));
865 hildon_program_add_window (app, view);
866 gtk_widget_show_all (GTK_WIDGET (view));
869 gtk_container_add (GTK_CONTAINER (mainWin), mainBox);
870 gtk_widget_show_all (GTK_WIDGET (mainWin));
874 appdata->display_keepalive = settings_get_display_keepalive (TRUE);
876 if (appdata->display_keepalive)
877 display_keepalive (appdata);
880 set_pipeline_states (appdata, GST_STATE_PLAYING);
883 set_pipeline_states (appdata, GST_STATE_NULL);
885 gst_object_unref (appdata->bin1);
886 gst_object_unref (appdata->bin2);