mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-20 00:31:13 +00:00
67 lines
2.5 KiB
C
67 lines
2.5 KiB
C
#include <gtk/gtk.h>
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#include <gst/gst.h>
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void set_speed (GtkAdjustment *adj, gpointer data)
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{
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GstElement *speed = GST_ELEMENT(data);
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gtk_object_set(GTK_OBJECT(speed), "speed", adj->value, NULL);
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}
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int 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_elementfactory_make("filesrc", "filesrc");
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mad = gst_elementfactory_make("mad", "mad");
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stereo2mono = gst_elementfactory_make("stereo2mono", "stereo2mono");
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speed = gst_elementfactory_make("speed", "speed");
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osssink = gst_elementfactory_make("osssink", "osssink");
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gtk_object_set(GTK_OBJECT(osssink), "fragment", 0x00180008, NULL);
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gtk_signal_connect(GTK_OBJECT(gtk_range_get_adjustment(GTK_RANGE(hscale))),
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"value_changed", set_speed, speed);
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pipeline = gst_pipeline_new("app");
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gst_bin_add(GST_BIN(pipeline), filesrc);
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gst_bin_add(GST_BIN(pipeline), mad);
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gst_bin_add(GST_BIN(pipeline), stereo2mono);
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gst_bin_add(GST_BIN(pipeline), speed);
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gst_bin_add(GST_BIN(pipeline), osssink);
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gst_element_connect(filesrc, "src", mad, "sink");
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gst_element_connect(mad, "src", stereo2mono, "sink");
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gst_element_connect(stereo2mono, "src", speed, "sink");
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gst_element_connect(speed, "src", osssink, "sink");
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gtk_object_set(GTK_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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}
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