From aa94247770732a40e46ab3d539dd9987062abef4 Mon Sep 17 00:00:00 2001 From: "Ronald S. Bultje" Date: Fri, 10 Oct 2003 12:47:42 +0000 Subject: Some interface implementations for video4linux/video4linux2 plugins: a Tuner interface, with which one can select inp... 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! --- gst-libs/gst/tuner/tuner.h | 96 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 gst-libs/gst/tuner/tuner.h (limited to 'gst-libs/gst/tuner/tuner.h') diff --git a/gst-libs/gst/tuner/tuner.h b/gst-libs/gst/tuner/tuner.h new file mode 100644 index 00000000..1cd51e11 --- /dev/null +++ b/gst-libs/gst/tuner/tuner.h @@ -0,0 +1,96 @@ +/* GStreamer Tuner + * Copyright (C) 2003 Ronald Bultje + * + * 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 +#include +#include + +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__ */ -- cgit v1.2.1