diff options
Diffstat (limited to 'gst/spectrum/demo-audiotest.c')
-rw-r--r-- | gst/spectrum/demo-audiotest.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/gst/spectrum/demo-audiotest.c b/gst/spectrum/demo-audiotest.c deleted file mode 100644 index bc2e9abc..00000000 --- a/gst/spectrum/demo-audiotest.c +++ /dev/null @@ -1,178 +0,0 @@ -/* GStreamer - * Copyright (C) 2006 Stefan Kost <ensonic@users.sf.net> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ -/* TODO: add wave selection */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <stdlib.h> -#include <string.h> -#include <math.h> -#include <gst/gst.h> -#include <gtk/gtk.h> - -#define DEFAULT_AUDIOSINK "autoaudiosink" - -static GtkWidget *drawingarea = NULL; -static guint spect_height = 64; -static guint spect_bands = 256; -static gfloat height_scale = 1.0; - -static void -on_window_destroy (GtkObject * object, gpointer user_data) -{ - drawingarea = NULL; - gtk_main_quit (); -} - -/* control audiotestsrc frequency */ -static void -on_frequency_changed (GtkRange * range, gpointer user_data) -{ - GstElement *machine = GST_ELEMENT (user_data); - gdouble value = gtk_range_get_value (range); - - g_object_set (machine, "freq", value, NULL); -} - -gboolean -on_configure_event (GtkWidget * widget, GdkEventConfigure * event, - gpointer user_data) -{ - GstElement *spectrum = GST_ELEMENT (user_data); - - /*GST_INFO ("%d x %d", event->width, event->height); */ - spect_height = event->height; - height_scale = event->height / 64.0; - spect_bands = event->width; - - g_object_set (G_OBJECT (spectrum), "bands", spect_bands, NULL); - return FALSE; -} - -/* draw frequency spectrum as a bunch of bars */ -static void -draw_spectrum (gfloat * data) -{ - gint i; - GdkRectangle rect = { 0, 0, spect_bands, spect_height }; - - if (!drawingarea) - return; - - gdk_window_begin_paint_rect (drawingarea->window, &rect); - gdk_draw_rectangle (drawingarea->window, drawingarea->style->black_gc, - TRUE, 0, 0, spect_bands, spect_height); - for (i = 0; i < spect_bands; i++) { - gdk_draw_rectangle (drawingarea->window, drawingarea->style->white_gc, - TRUE, i, -data[i], 1, spect_height + data[i]); - } - gdk_window_end_paint (drawingarea->window); -} - -/* receive spectral data from element message */ -gboolean -message_handler (GstBus * bus, GstMessage * message, gpointer data) -{ - if (message->type == GST_MESSAGE_ELEMENT) { - const GstStructure *s = gst_message_get_structure (message); - const gchar *name = gst_structure_get_name (s); - - if (strcmp (name, "spectrum") == 0) { - gfloat spect[spect_bands]; - const GValue *list; - const GValue *value; - guint i; - - list = gst_structure_get_value (s, "magnitude"); - for (i = 0; i < spect_bands; ++i) { - value = gst_value_list_get_value (list, i); - spect[i] = height_scale * g_value_get_float (value); - } - draw_spectrum (spect); - } - } - return TRUE; -} - -int -main (int argc, char *argv[]) -{ - GstElement *bin; - GstElement *src, *spectrum, *audioconvert, *sink; - GstBus *bus; - GtkWidget *appwindow, *vbox, *widget; - - gst_init (&argc, &argv); - gtk_init (&argc, &argv); - - bin = gst_pipeline_new ("bin"); - - src = gst_element_factory_make ("audiotestsrc", "src"); - g_object_set (G_OBJECT (src), "wave", 0, NULL); - - spectrum = gst_element_factory_make ("spectrum", "spectrum"); - g_object_set (G_OBJECT (spectrum), "bands", spect_bands, "threshold", -80, - "message", TRUE, NULL); - - audioconvert = gst_element_factory_make ("audioconvert", "audioconvert"); - - sink = gst_element_factory_make (DEFAULT_AUDIOSINK, "sink"); - - gst_bin_add_many (GST_BIN (bin), src, spectrum, audioconvert, sink, NULL); - if (!gst_element_link_many (src, spectrum, audioconvert, sink, NULL)) { - fprintf (stderr, "can't link elements\n"); - exit (1); - } - - bus = gst_element_get_bus (bin); - gst_bus_add_watch (bus, message_handler, NULL); - gst_object_unref (bus); - - appwindow = gtk_window_new (GTK_WINDOW_TOPLEVEL); - g_signal_connect (G_OBJECT (appwindow), "destroy", - G_CALLBACK (on_window_destroy), NULL); - vbox = gtk_vbox_new (FALSE, 6); - - widget = gtk_hscale_new_with_range (50.0, 20000.0, 10); - gtk_scale_set_draw_value (GTK_SCALE (widget), TRUE); - gtk_scale_set_value_pos (GTK_SCALE (widget), GTK_POS_TOP); - gtk_range_set_value (GTK_RANGE (widget), 440.0); - g_signal_connect (G_OBJECT (widget), "value-changed", - G_CALLBACK (on_frequency_changed), (gpointer) src); - gtk_box_pack_start (GTK_BOX (vbox), widget, FALSE, FALSE, 0); - - drawingarea = gtk_drawing_area_new (); - gtk_widget_set_size_request (drawingarea, spect_bands, spect_height); - g_signal_connect (G_OBJECT (drawingarea), "configure-event", - G_CALLBACK (on_configure_event), (gpointer) spectrum); - gtk_box_pack_start (GTK_BOX (vbox), drawingarea, TRUE, TRUE, 0); - - gtk_container_add (GTK_CONTAINER (appwindow), vbox); - gtk_widget_show_all (appwindow); - - gst_element_set_state (bin, GST_STATE_PLAYING); - gtk_main (); - gst_element_set_state (bin, GST_STATE_NULL); - - gst_object_unref (bin); - - return 0; -} |