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#include <gnome.h>
#include <gst/gst.h>
extern gboolean _gst_plugin_spew;
void spectrum_chain(GstPad *pad,GstBuffer *buf);
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_elementfactory_find("osssrc");
spectrumfactory = gst_elementfactory_find("gstspectrum");
src = gst_elementfactory_create(srcfactory,"src");
gtk_object_set(GTK_OBJECT(src),"bytes_per_read",(gulong)1024,NULL);
spectrum = gst_elementfactory_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_connect(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_connect(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,GstBuffer *buf) {
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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