mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-28 20:51:13 +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!
96 lines
3.3 KiB
C
96 lines
3.3 KiB
C
/* GStreamer Tuner
|
|
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
|
|
*
|
|
* tuner.h: tuner interface 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.
|
|
*/
|
|
|
|
#ifndef __GST_TUNER_H__
|
|
#define __GST_TUNER_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/tuner/tunernorm.h>
|
|
#include <gst/tuner/tunerchannel.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_TUNER \
|
|
(gst_tuner_get_type ())
|
|
#define GST_TUNER(obj) \
|
|
(GST_INTERFACE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TUNER, GstTuner))
|
|
#define GST_TUNER_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TUNER, GstTunerClass))
|
|
#define GST_IS_TUNER(obj) \
|
|
(GST_INTERFACE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TUNER))
|
|
#define GST_IS_TUNER_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TUNER))
|
|
#define GST_TUNER_GET_CLASS(inst) \
|
|
(G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_TUNER, GstTunerClass))
|
|
|
|
typedef struct _GstTuner GstTuner;
|
|
|
|
typedef struct _GstTunerClass {
|
|
GTypeInterface klass;
|
|
|
|
/* virtual functions */
|
|
const GList * (* list_channels) (GstTuner *tuner);
|
|
void (* set_channel) (GstTuner *tuner,
|
|
GstTunerChannel *channel);
|
|
const GstTunerChannel *
|
|
(* get_channel) (GstTuner *tuner);
|
|
|
|
const GList * (* list_norms) (GstTuner *tuner);
|
|
void (* set_norm) (GstTuner *tuner,
|
|
GstTunerNorm *norm);
|
|
const GstTunerNorm *
|
|
(* get_norm) (GstTuner *tuner);
|
|
|
|
void (* set_frequency) (GstTuner *tuner,
|
|
GstTunerChannel *channel,
|
|
gulong frequency);
|
|
gulong (* get_frequency) (GstTuner *tuner,
|
|
GstTunerChannel *channel);
|
|
gint (* signal_strength) (GstTuner *tuner,
|
|
GstTunerChannel *channel);
|
|
} GstTunerClass;
|
|
|
|
GType gst_tuner_get_type (void);
|
|
|
|
/* virtual class function wrappers */
|
|
const GList * gst_tuner_list_channels (GstTuner *tuner);
|
|
void gst_tuner_set_channel (GstTuner *tuner,
|
|
GstTunerChannel *channel);
|
|
const GstTunerChannel *
|
|
gst_tuner_get_channel (GstTuner *tuner);
|
|
|
|
const GList * gst_tuner_list_norms (GstTuner *tuner);
|
|
void gst_tuner_set_norm (GstTuner *tuner,
|
|
GstTunerNorm *channel);
|
|
const GstTunerNorm *
|
|
gst_tuner_get_norm (GstTuner *tuner);
|
|
|
|
void gst_tuner_set_frequency (GstTuner *tuner,
|
|
GstTunerChannel *channel,
|
|
gulong frequency);
|
|
gulong gst_tuner_get_frequency (GstTuner *tuner,
|
|
GstTunerChannel *channel);
|
|
gint gst_tuner_signal_strength (GstTuner *tuner,
|
|
GstTunerChannel *channel);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_TUNER_H__ */
|