gst/spectrum/: port to use message to get results, cleanly exit when closing the window

Original commit message from CVS:
* gst/spectrum/demo-audiotest.c: (on_window_destroy),
(draw_spectrum), (message_handler), (main):
* gst/spectrum/demo-osssrc.c: (on_window_destroy), (draw_spectrum),
(message_handler), (main):
port to use message to get results, cleanly exit when closing the window
* gst/spectrum/gstspectrum.c: (gst_spectrum_class_init),
(gst_spectrum_init), (gst_spectrum_dispose),
(gst_spectrum_set_property), (gst_spectrum_get_property),
(gst_spectrum_set_caps), (gst_spectrum_start),
(gst_spectrum_message_new), (gst_spectrum_transform_ip):
* gst/spectrum/gstspectrum.h:
port to derive from basetransform and send results via messages
(like level element)

1 files changed, 17 insertions, 6 deletions

diff --git a/gst/spectrum/gstspectrum.h b/gst/spectrum/gstspectrum.h
index a6c918c0..51e2000c 100644
--- a/gst/spectrum/gstspectrum.h
+++ b/gst/spectrum/gstspectrum.h
@@ -24,6 +24,7 @@
 
 #include <gst/gst.h>
 #include <gst/base/gstadapter.h>
+#include <gst/base/gstbasetransform.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -40,25 +41,35 @@ typedef struct _GstSpectrum GstSpectrum;
 typedef struct _GstSpectrumClass GstSpectrumClass;
 
 struct _GstSpectrum {
-  GstElement element;
+  GstBaseTransform element;
 
   GstPad *sinkpad,*srcpad;
   GstAdapter *adapter;
 
   /* properties */
-  guint width;
-  gint threshold;
-
+  gboolean message;             /* whether or not to post messages */
+  gdouble interval;             /* how many seconds between emits */
+  guint bands;                  /* number of spectrum bands */
+  gint threshold;               /* energy level treshold */
+
+  gint num_frames;              /* frame count (1 sample per channel)
+                                 * since last emit */
+                                 
+  gint rate;                    /* caps variables */
+  gint width;
   gint channels;
+
+  /* <private> */
   gint base, len;
   gint16 *re, *im, *loud;
+  guchar *spect;
 };
 
 struct _GstSpectrumClass {
-  GstElementClass parent_class;
+  GstBaseTransformClass parent_class;
 };
 
-GType gst_spectrum_get_type(void);
+GType gst_spectrum_get_type (void);
 
 
 #ifdef __cplusplus