mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 10:11:08 +00:00
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
#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);
|
|
gst_plugin_load("libgstspectrum.so");
|
|
gnome_init("Spectrum","0.0.1",argc,argv);
|
|
|
|
bin = gst_bin_new("bin");
|
|
|
|
srcfactory = gst_elementfactory_find("audiosrc");
|
|
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;
|
|
}
|