spectrum.c -> demo-osssrc.c

Original commit message from CVS:
spectrum.c -> demo-osssrc.c

1 files changed, 81 insertions, 0 deletions

diff --git a/tests/examples/spectrum/demo-osssrc.c b/tests/examples/spectrum/demo-osssrc.c
new file mode 100644
index 00000000..cd3f6ac4
--- /dev/null
+++ b/tests/examples/spectrum/demo-osssrc.c
@@ -0,0 +1,81 @@
+#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;
+}