examples/dynparams/Makefile.am: Move demo-dparams from gst/sine to examples/dynparams. Examples do not belong inters...

Original commit message from CVS:
* examples/dynparams/Makefile.am: Move demo-dparams from gst/sine
to examples/dynparams.  Examples do not belong interspersed with
source code.
* examples/dynparams/demo-dparams.c:
* gst/sine/Makefile.am:
* gst/sine/demo-dparams.c:

ChangeLog

@@ -1,3 +1,12 @@
+2005-04-25  David Schleef  <ds@schleef.org>
+
+	* examples/dynparams/Makefile.am: Move demo-dparams from gst/sine
+	to examples/dynparams.  Examples do not belong interspersed with
+	source code.
+	* examples/dynparams/demo-dparams.c:
+	* gst/sine/Makefile.am:
+	* gst/sine/demo-dparams.c:
+
 2005-04-25  David Schleef  <ds@schleef.org>
 
 	Don't use GST_PLUGIN_LDFLAGS, because these aren't plugins.

examples/dynparams/Makefile.am

@@ -1,7 +1,10 @@
-examples = filter
+examples = filter demo-dparams
 
 noinst_PROGRAMS = $(examples)
 
 # we have nothing but apps here, we can do this safely
 LIBS = $(GST_LIBS) $(GTK_LIBS) $(GST_CONTROL_LIBS)
 AM_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS)
+
+
+

gst/sine/Makefile.am

@@ -8,11 +8,3 @@ libgstsinesrc_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
 
 noinst_HEADERS = gstsinesrc.h
 
-if HAVE_GTK
-noinst_PROGRAMS = demo_dparams
-endif
-
-demo_dparams_SOURCES = demo-dparams.c
-## putting GTK in front solves a bad compilation problem
-demo_dparams_CFLAGS  = $(GTK_CFLAGS) $(GST_CFLAGS) 
-demo_dparams_LDFLAGS = $(GST_LIBS) $(GTK_LIBS) $(GST_CONTROL_LIBS)

tests/old/examples/dynparams/Makefile.am

@@ -1,7 +1,10 @@
-examples = filter
+examples = filter demo-dparams
 
 noinst_PROGRAMS = $(examples)
 
 # we have nothing but apps here, we can do this safely
 LIBS = $(GST_LIBS) $(GTK_LIBS) $(GST_CONTROL_LIBS)
 AM_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS)
+
+
+

tests/old/examples/dynparams/demo-dparams.c

@@ -0,0 +1,160 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+#include <gtk/gtk.h>
+#include <gst/gst.h>
+#include <gst/control/control.h>
+
+#define ZERO(mem) memset(&mem, 0, sizeof(mem))
+
+static gint
+quit_live (GtkWidget * window, GdkEventAny * e, gpointer data)
+{
+  gtk_main_quit ();
+  return FALSE;
+}
+
+static void
+dynparm_log_value_changed (GtkAdjustment * adj, GstDParam * dparam)
+{
+  gdouble value;
+
+  g_return_if_fail (dparam != NULL);
+  g_return_if_fail (GST_IS_DPARAM (dparam));
+
+  value = exp (adj->value);
+
+  g_print ("setting value to %f\n", value);
+  g_object_set (G_OBJECT (dparam), "value_double", value, NULL);
+}
+
+static void
+dynparm_value_changed (GtkAdjustment * adj, GstDParam * dparam)
+{
+  g_return_if_fail (dparam != NULL);
+  g_return_if_fail (GST_IS_DPARAM (dparam));
+
+  g_print ("setting value to %f\n", adj->value);
+  g_object_set (G_OBJECT (dparam), "value_double", (gdouble) adj->value, NULL);
+
+}
+
+
+int
+main (int argc, char *argv[])
+{
+  GtkWidget *window;
+  GtkWidget *hbox;
+  GtkAdjustment *volume_adj;
+  GtkAdjustment *freq_adj;
+  GtkWidget *volume_slider;
+  GtkWidget *freq_slider;
+
+  GstElement *thread, *sinesrc, *volfilter, *audiosink;
+  GstDParamManager *dpman;
+  GstDParam *volume;
+  GstDParam *freq;
+  GParamSpecDouble *spec;
+
+  gtk_init (&argc, &argv);
+  gst_init (&argc, &argv);
+  gst_control_init (&argc, &argv);
+
+  /***** construct the pipeline *****/
+
+  g_print ("creating elements\n");
+  thread = gst_thread_new ("live-example");
+  sinesrc = gst_element_factory_make ("sinesrc", "sine-source");
+  audiosink = gst_element_factory_make (DEFAULT_AUDIOSINK, "sound-sink");
+  volfilter = gst_element_factory_make ("volume", "volume-filter");
+  gst_bin_add_many (GST_BIN (thread), sinesrc, volfilter, audiosink, NULL);
+  gst_element_link_many (sinesrc, volfilter, audiosink, NULL);
+  /* this breaks with current alsa oss compat lib */
+  g_object_set (G_OBJECT (audiosink), "fragment", 0x00180008, NULL);
+  g_object_set (G_OBJECT (audiosink), "sync", FALSE, NULL);
+
+  g_object_set (G_OBJECT (sinesrc), "samplesperbuffer", 1024, NULL);
+
+  /***** set up the GUI *****/
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_window_set_default_size (GTK_WINDOW (window), 80, 400);
+  g_signal_connect (window, "delete_event", GTK_SIGNAL_FUNC (quit_live), NULL);
+  hbox = gtk_hbox_new (TRUE, 0);
+  gtk_container_add (GTK_CONTAINER (window), hbox);
+
+  /***** set up the dparams *****/
+
+  freq = gst_dpsmooth_new (G_TYPE_DOUBLE);
+
+  g_object_set (G_OBJECT (freq), "update_period", 2000000LL, NULL);
+
+  /* this defines the maximum slope that this *
+   * param can change.  This says that in 50ms *
+   * the value can change by a maximum of one semitone *
+   * (the log of one semitone is 0.693) */
+  g_object_set (G_OBJECT (freq), "slope_delta_double", 0.693, NULL);
+  g_object_set (G_OBJECT (freq), "slope_time", 50000000LL, NULL);
+
+  dpman = gst_dpman_get_manager (sinesrc);
+  if (!gst_dpman_attach_dparam (dpman, "freq", freq))
+    g_assert_not_reached ();
+  gst_dpman_set_mode (dpman, "asynchronous");
+
+  spec = (GParamSpecDouble *) gst_dpman_get_param_spec (dpman, "freq");
+  freq_adj = (GtkAdjustment *) gtk_adjustment_new (log (spec->default_value),
+      log (spec->minimum), log (spec->maximum), 0.1, 0.01, 0.01);
+
+
+  freq_slider = gtk_vscale_new (freq_adj);
+  gtk_scale_set_digits (GTK_SCALE (freq_slider), 2);
+  gtk_box_pack_start (GTK_BOX (hbox), freq_slider, TRUE, TRUE, 0);
+
+  volume = gst_dpsmooth_new (G_TYPE_DOUBLE);
+
+  g_object_set (G_OBJECT (volume), "update_period", 2000000LL, NULL);
+
+  /* this defines the maximum slope that this *
+   * param can change.  This says that in 50ms *
+   * the value can change from 0.0 to 1.0 */
+  g_object_set (G_OBJECT (volume), "slope_delta_double", 0.1, NULL);
+  g_object_set (G_OBJECT (volume), "slope_time", 50000000LL, NULL);
+
+  dpman = gst_dpman_get_manager (volfilter);
+  if (!gst_dpman_attach_dparam (dpman, "volume", volume))
+    g_assert_not_reached ();
+  gst_dpman_set_mode (dpman, "asynchronous");
+
+  g_object_set (G_OBJECT (volfilter), "mute", FALSE, NULL);
+
+  spec = (GParamSpecDouble *) gst_dpman_get_param_spec (dpman, "volume");
+  volume_adj =
+      (GtkAdjustment *) gtk_adjustment_new (spec->default_value, 0.0, 1.2, 0.1,
+      0.01, 0.01);
+  volume_slider = gtk_vscale_new (volume_adj);
+  gtk_scale_set_digits (GTK_SCALE (volume_slider), 2);
+  gtk_box_pack_start (GTK_BOX (hbox), volume_slider, TRUE, TRUE, 0);
+
+  /***** set up the handlers and such *****/
+  /*gtk_signal_connect(volume_adj,"value-changed",GTK_SIGNAL_FUNC(volume_changed),sinesrc); */
+  g_signal_connect (volume_adj, "value-changed",
+      GTK_SIGNAL_FUNC (dynparm_value_changed), volume);
+
+  g_signal_connect (freq_adj, "value-changed",
+      GTK_SIGNAL_FUNC (dynparm_log_value_changed), freq);
+  gtk_adjustment_value_changed (volume_adj);
+  gtk_adjustment_value_changed (freq_adj);
+
+  g_print ("starting pipeline\n");
+
+  /***** start everything up *****/
+  gst_element_set_state (thread, GST_STATE_PLAYING);
+
+
+  gtk_widget_show_all (window);
+  gtk_main ();
+
+  return 0;
+}