mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-28 04:31:06 +00:00
0f124a569d
Original commit message from CVS: Some interface implementations for video4linux/video4linux2 plugins: * a Tuner interface, with which one can select inputs and stations. Audio work is underway here, but unfinished. * A Xoverlay interface with which one can do simple overlay. Similar to the API of the v4l/Xv XFree86 extension. Widget implementation for GTK-2.0 coming up in the sandbox. * Colorbalance - for adapting colors (brightness, contrast, etc.) - pretty basic and maybe somewhat overdesigned. But it'll do for now. Apart from these interfaces, there's also a loadable library 'xwindowlistener' that listenes to X for the movement of a window and the overlap of other windows. This is partly copied from xawtv (and thus partly GPL :(), but it's needed for the xoverlay interface implementation in the v4l/v4l2 elements. Lastly, some small changes to remove redundant properties from the v4l/v4l2 elements since these can be done much simpler. Comments appreciated!
114 lines
3.2 KiB
C
114 lines
3.2 KiB
C
/* GStreamer Tuner
|
|
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
|
|
*
|
|
* tunerchannel.c: tuner channel object design
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "tunerchannel.h"
|
|
|
|
enum {
|
|
/* FILL ME */
|
|
SIGNAL_FREQUENCY_CHANGED,
|
|
SIGNAL_SIGNAL_CHANGED,
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
static void gst_tuner_channel_class_init (GstTunerChannelClass *klass);
|
|
static void gst_tuner_channel_init (GstTunerChannel *channel);
|
|
static void gst_tuner_channel_dispose (GObject *object);
|
|
|
|
static GObjectClass *parent_class = NULL;
|
|
static guint signals[LAST_SIGNAL] = { 0 };
|
|
|
|
GType
|
|
gst_tuner_channel_get_type (void)
|
|
{
|
|
static GType gst_tuner_channel_type = 0;
|
|
|
|
if (!gst_tuner_channel_type) {
|
|
static const GTypeInfo tuner_channel_info = {
|
|
sizeof (GstTunerChannelClass),
|
|
NULL,
|
|
NULL,
|
|
(GClassInitFunc) gst_tuner_channel_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof (GstTunerChannel),
|
|
0,
|
|
(GInstanceInitFunc) gst_tuner_channel_init,
|
|
NULL
|
|
};
|
|
|
|
gst_tuner_channel_type =
|
|
g_type_register_static (G_TYPE_OBJECT,
|
|
"GstTunerChannel",
|
|
&tuner_channel_info, 0);
|
|
}
|
|
|
|
return gst_tuner_channel_type;
|
|
}
|
|
|
|
static void
|
|
gst_tuner_channel_class_init (GstTunerChannelClass *klass)
|
|
{
|
|
GObjectClass *object_klass = (GObjectClass *) klass;
|
|
|
|
parent_class = g_type_class_ref (G_TYPE_OBJECT);
|
|
|
|
signals[SIGNAL_FREQUENCY_CHANGED] =
|
|
g_signal_new ("frequency_changed", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GstTunerChannelClass,
|
|
frequency_changed),
|
|
NULL, NULL, g_cclosure_marshal_VOID__ULONG,
|
|
G_TYPE_NONE, 1, G_TYPE_ULONG);
|
|
signals[SIGNAL_SIGNAL_CHANGED] =
|
|
g_signal_new ("signal_changed", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GstTunerChannelClass,
|
|
signal_changed),
|
|
NULL, NULL, g_cclosure_marshal_VOID__INT,
|
|
G_TYPE_NONE, 1, G_TYPE_INT);
|
|
|
|
object_klass->dispose = gst_tuner_channel_dispose;
|
|
}
|
|
|
|
static void
|
|
gst_tuner_channel_init (GstTunerChannel *channel)
|
|
{
|
|
channel->label = NULL;
|
|
channel->flags = 0;
|
|
channel->min_frequency = channel->max_frequency = 0;
|
|
channel->min_signal = channel->max_signal = 0;
|
|
}
|
|
|
|
static void
|
|
gst_tuner_channel_dispose (GObject *object)
|
|
{
|
|
GstTunerChannel *channel = GST_TUNER_CHANNEL (object);
|
|
|
|
if (channel->label)
|
|
g_free (channel->label);
|
|
|
|
if (parent_class->dispose)
|
|
parent_class->dispose (object);
|
|
}
|