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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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87 lines
3 KiB
C
87 lines
3 KiB
C
/*
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* GStreamer
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* Copyright (C) 2002 Andy Wingo <wingo at pobox dot com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <stdlib.h>
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#include <gtk/gtk.h>
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#include <gst/gst.h>
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void
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set_speed (GtkAdjustment * adj, gpointer data)
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{
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GstElement *speed = GST_ELEMENT (data);
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g_object_set (speed, "speed", adj->value, NULL);
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}
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int
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main (int argc, char **argv)
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{
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GtkWidget *window, *vbox, *hscale, *button;
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GstElement *filesrc, *mad, *stereo2mono, *speed, *osssink, *pipeline;
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gst_init (&argc, &argv);
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gtk_init (&argc, &argv);
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if (argc != 2) {
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g_print ("usage: %s <your.mp3>\n", argv[0]);
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exit (-1);
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}
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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gtk_window_set_default_size (GTK_WINDOW (window), 400, 80);
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vbox = gtk_vbox_new (FALSE, 0);
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gtk_widget_show (vbox);
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hscale = gtk_hscale_new (GTK_ADJUSTMENT (gtk_adjustment_new (1.0, 0.01, 4.0,
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0.1, 0.0, 0.0)));
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gtk_scale_set_digits (GTK_SCALE (hscale), 2);
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gtk_range_set_update_policy (GTK_RANGE (hscale), GTK_UPDATE_CONTINUOUS);
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button = gtk_button_new_with_label ("quit");
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gtk_container_add (GTK_CONTAINER (window), vbox);
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gtk_box_pack_start (GTK_BOX (vbox), hscale, TRUE, TRUE, 2);
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gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 2);
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gtk_widget_show (hscale);
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gtk_signal_connect (GTK_OBJECT (button), "clicked", gtk_main_quit, NULL);
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gtk_widget_show (button);
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filesrc = gst_element_factory_make ("filesrc", "filesrc");
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mad = gst_element_factory_make ("mad", "mad");
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stereo2mono = gst_element_factory_make ("stereo2mono", "stereo2mono");
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speed = gst_element_factory_make ("speed", "speed");
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osssink = gst_element_factory_make ("osssink", "osssink");
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g_object_set (osssink, "fragment", 0x00180008, NULL);
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gtk_signal_connect (GTK_OBJECT (gtk_range_get_adjustment (GTK_RANGE
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(hscale))), "value_changed", G_CALLBACK (set_speed), speed);
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pipeline = gst_pipeline_new ("app");
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gst_bin_add_many (GST_BIN (pipeline), filesrc, mad, stereo2mono, speed,
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osssink, NULL);
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gst_element_link_many (filesrc, mad, stereo2mono, speed, osssink, NULL);
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g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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gtk_widget_show (window);
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gtk_idle_add ((GtkFunction) gst_bin_iterate, pipeline);
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gtk_main ();
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return 0;
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}
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