1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/*
* GStreamer
* Copyright (C) 2002 Andy Wingo <wingo at pobox dot com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <gtk/gtk.h>
#include <gst/gst.h>
static GtkWidget *poslabel; /* NULL */
void
set_speed (GtkAdjustment * adj, gpointer data)
{
GstElement *speed = GST_ELEMENT (data);
g_object_set (speed, "speed", adj->value, NULL);
}
static gboolean
time_tick_cb (GstElement * audiosink)
{
GstFormat format = GST_FORMAT_TIME;
guint64 total, pos;
if (gst_element_query (audiosink, GST_QUERY_TOTAL, &format, &total)
&& gst_element_query (audiosink, GST_QUERY_POSITION, &format, &pos)) {
guint t_min, t_sec, p_min, p_sec;
gchar *s;
t_min = (guint) (total / (GST_SECOND * 60));
t_sec = (guint) ((total % (GST_SECOND * 60)) / GST_SECOND);
p_min = (guint) (pos / (GST_SECOND * 60));
p_sec = (guint) ((pos % (GST_SECOND * 60)) / GST_SECOND);
s = g_strdup_printf ("%u:%02u / %u:%02u", p_min, p_sec, t_min, t_sec);
gtk_label_set_text (GTK_LABEL (poslabel), s);
g_free (s);
}
return TRUE; /* call again */
}
int
main (int argc, char **argv)
{
GtkWidget *window, *vbox, *hscale, *button, *hbbox;
GstElement *filesrc, *mad, *audioconvert, *speed, *audiosink, *pipeline;
gst_init (&argc, &argv);
gtk_init (&argc, &argv);
if (argc != 2) {
g_print ("usage: %s <your.mp3>\n", argv[0]);
exit (-1);
}
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (window, "delete-event", G_CALLBACK (gtk_main_quit), NULL);
gtk_window_set_default_size (GTK_WINDOW (window), 400, 80);
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
hscale = gtk_hscale_new (GTK_ADJUSTMENT (gtk_adjustment_new (1.0, 0.1, 4.0,
0.1, 0.0, 0.0)));
gtk_scale_set_digits (GTK_SCALE (hscale), 2);
gtk_range_set_update_policy (GTK_RANGE (hscale), GTK_UPDATE_CONTINUOUS);
hbbox = gtk_hbutton_box_new ();
button = gtk_button_new_from_stock (GTK_STOCK_QUIT);
gtk_container_add (GTK_CONTAINER (window), vbox);
gtk_container_add (GTK_CONTAINER (hbbox), button);
poslabel = gtk_label_new (NULL);
gtk_box_pack_start (GTK_BOX (vbox), poslabel, FALSE, FALSE, 2);
gtk_box_pack_start (GTK_BOX (vbox), hscale, TRUE, TRUE, 2);
gtk_box_pack_start (GTK_BOX (vbox), hbbox, FALSE, FALSE, 6);
g_signal_connect (button, "clicked", G_CALLBACK (gtk_main_quit), NULL);
filesrc = gst_element_factory_make ("filesrc", "filesrc");
mad = gst_element_factory_make ("mad", "mad");
audioconvert = gst_element_factory_make ("audioconvert", "audioconvert0");
speed = gst_element_factory_make ("speed", "speed");
audiosink = gst_element_factory_make (DEFAULT_AUDIOSINK, "audiosink");
g_signal_connect (gtk_range_get_adjustment (GTK_RANGE (hscale)),
"value_changed", G_CALLBACK (set_speed), speed);
pipeline = gst_pipeline_new ("app");
gst_bin_add_many (GST_BIN (pipeline), filesrc, mad, audioconvert, speed,
audiosink, NULL);
gst_element_link_many (filesrc, mad, audioconvert, speed, audiosink, NULL);
g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
gst_element_set_state (pipeline, GST_STATE_PLAYING);
gtk_widget_show_all (window);
g_idle_add ((GSourceFunc) gst_bin_iterate, pipeline);
g_timeout_add (200, (GSourceFunc) time_tick_cb, audiosink);
gtk_main ();
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (GST_OBJECT (pipeline));
return 0;
}
|
