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#include <gnome.h>
#include <gst/gst.h>
extern gboolean _gst_plugin_spew;
void spectrum_chain (GstPad * pad, GstData * _data);
gboolean idle_func (gpointer data);
GtkWidget *drawingarea;
int
main (int argc, char *argv[])
{
GstElement *bin;
GstElementFactory *srcfactory;
GstElement *src;
GstElementFactory *spectrumfactory;
GstElement *spectrum;
GstPad *spectrumpad;
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");
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);
gst_bin_add (GST_BIN (bin), GST_ELEMENT (src));
gst_bin_add (GST_BIN (bin), GST_ELEMENT (spectrum));
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");
drawingarea = gtk_drawing_area_new ();
gtk_drawing_area_size (GTK_DRAWING_AREA (drawingarea), 256, 32);
gnome_app_set_contents (GNOME_APP (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);
gtk_main ();
return 0;
}
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;
}
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