gst/spectrum/: Fix demo and reenable it. Yes, I'm currently playing with audio analysis tools

Original commit message from CVS:
* gst/spectrum/Makefile.am:
* gst/spectrum/demo-osssrc.c: (spectrum_chain), (main),
(idle_func):
Fix demo and reenable it. Yes, I'm currently playing with audio
analysis tools

2 files changed, 41 insertions, 59 deletions

diff --git a/gst/spectrum/Makefile.am b/gst/spectrum/Makefile.am
index 1e9a6c77..f86107d4 100644
--- a/gst/spectrum/Makefile.am
+++ b/gst/spectrum/Makefile.am
@@ -8,14 +8,12 @@ libgstspectrum_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
 
 noinst_HEADERS = gstspectrum.h
 
-## this thing needs gnome too, so unless someone checks for it, let's 
-## comment it out.
-## if HAVE_GTK
-## noinst_PROGRAMS = demo-osssrc
-## endif
+if HAVE_GTK
+noinst_PROGRAMS = demo-osssrc
+endif
 
-## demo_osssrc_SOURCES = demo-osssrc.c
-## demo_osssrc_CFLAGS  = $(GST_CFLAGS) $(GTK_CFLAGS)
-## demo_osssrc_LDFLAGS = $(GST_LIBS) $(GTK_LIBS)
+demo_osssrc_SOURCES = demo-osssrc.c
+demo_osssrc_CFLAGS  = $(GST_CFLAGS) $(GTK_CFLAGS)
+demo_osssrc_LDFLAGS = $(GST_LIBS) $(GTK_LIBS)
 
 EXTRA_DIST = README
diff --git a/gst/spectrum/demo-osssrc.c b/gst/spectrum/demo-osssrc.c
index 1bd2fa11..bba27b3a 100644
--- a/gst/spectrum/demo-osssrc.c
+++ b/gst/spectrum/demo-osssrc.c
@@ -1,62 +1,63 @@
-#include <gnome.h>
 #include <gst/gst.h>
+#include <gtk/gtk.h>
 
 extern gboolean _gst_plugin_spew;
 
-void spectrum_chain (GstPad * pad, GstData * _data);
 gboolean idle_func (gpointer data);
 
 GtkWidget *drawingarea;
 
+void
+spectrum_chain (GstElement * sink, GstBuffer * buf, GstPad * pad,
+    gpointer unused)
+{
+  gint i;
+  guchar *data = buf->data;
+  GdkRectangle rect = { 0, 0, GST_BUFFER_SIZE (buf), 25 };
+
+  gdk_window_begin_paint_rect (drawingarea->window, &rect);
+  gdk_draw_rectangle (drawingarea->window, drawingarea->style->black_gc,
+      TRUE, 0, 0, GST_BUFFER_SIZE (buf), 25);
+  for (i = 0; i < GST_BUFFER_SIZE (buf); i++) {
+    gdk_draw_rectangle (drawingarea->window, drawingarea->style->white_gc,
+        TRUE, i, 32 - data[i], 1, data[i]);
+  }
+  gdk_window_end_paint (drawingarea->window);
+}
+
 int
 main (int argc, char *argv[])
 {
   GstElement *bin;
-  GstElementFactory *srcfactory;
-  GstElement *src;
-  GstElementFactory *spectrumfactory;
-  GstElement *spectrum;
-  GstPad *spectrumpad;
+  GstElement *src, *spectrum, *sink;
 
   GtkWidget *appwindow;
 
-  _gst_plugin_spew = TRUE;
-
   gst_init (&argc, &argv);
-  gnome_init ("Spectrum", "0.0.1", argc, argv);
-
-  bin = gst_bin_new ("bin");
-
-  srcfactory = gst_element_factory_find ("osssrc");
-  spectrumfactory = gst_element_factory_find ("gstspectrum");
+  gtk_init (&argc, &argv);
 
-  src = gst_element_factory_create (srcfactory, "src");
-  gtk_object_set (GTK_OBJECT (src), "bytes_per_read", (gulong) 1024, NULL);
-  spectrum = gst_element_factory_create (spectrumfactory, "spectrum");
-  gtk_object_set (GTK_OBJECT (spectrum), "width", 256, NULL);
+  bin = gst_pipeline_new ("bin");
 
+  src = gst_element_factory_make ("osssrc", "src");
+  g_object_set (G_OBJECT (src), "buffersize", (gulong) 1024, NULL);
+  spectrum = gst_element_factory_make ("spectrum", "spectrum");
+  g_object_set (G_OBJECT (spectrum), "width", 256, NULL);
+  sink = gst_element_factory_make ("fakesink", "sink");
+  g_object_set (G_OBJECT (sink), "signal-handoffs", TRUE, NULL);
+  g_signal_connect (sink, "handoff", G_CALLBACK (spectrum_chain), NULL);
 
-  gst_bin_add (GST_BIN (bin), GST_ELEMENT (src));
-  gst_bin_add (GST_BIN (bin), GST_ELEMENT (spectrum));
+  gst_bin_add_many (GST_BIN (bin), src, spectrum, sink, NULL);
+  gst_element_link_many (src, spectrum, sink, NULL);
 
-  gst_pad_link (gst_element_get_pad (src, "src"),
-      gst_element_get_pad (spectrum, "sink"));
-
-  spectrumpad = gst_pad_new ("sink", GST_PAD_SINK);
-  gst_pad_set_chain_function (spectrumpad, spectrum_chain);
-
-  gst_pad_link (gst_element_get_pad (spectrum, "src"), spectrumpad);
-
-  appwindow = gnome_app_new ("spectrum", "Spectrum");
+  appwindow = gtk_window_new (GTK_WINDOW_TOPLEVEL);
   drawingarea = gtk_drawing_area_new ();
   gtk_drawing_area_size (GTK_DRAWING_AREA (drawingarea), 256, 32);
-  gnome_app_set_contents (GNOME_APP (appwindow), drawingarea);
+  gtk_container_add (GTK_CONTAINER (appwindow), drawingarea);
   gtk_widget_show_all (appwindow);
 
-  gst_element_set_state (GST_ELEMENT (bin), GST_STATE_READY);
   gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PLAYING);
 
-  g_idle_add (idle_func, src);
+  g_idle_add (idle_func, bin);
 
   gtk_main ();
 
@@ -64,25 +65,8 @@ main (int argc, char *argv[])
 }
 
 
-void
-spectrum_chain (GstPad * pad, GstData * _data)
-{
-  GstBuffer *buf = GST_BUFFER (_data);
-  gint i;
-  guchar *data = buf->data;
-
-  gdk_draw_rectangle (drawingarea->window, drawingarea->style->black_gc,
-      TRUE, 0, 0, GST_BUFFER_SIZE (buf), 25);
-  for (i = 0; i < GST_BUFFER_SIZE (buf); i++) {
-    gdk_draw_rectangle (drawingarea->window, drawingarea->style->white_gc,
-        TRUE, i, 32 - data[i], 1, data[i]);
-  }
-  gst_buffer_unref (buf);
-}
-
 gboolean
 idle_func (gpointer data)
 {
-  /*gst_src_push(GST_SRC(data)); */
-  return TRUE;
+  return gst_bin_iterate (data);
 }