mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-20 23:36:38 +00:00
88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
#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;
|
|
}
|