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!

1 files changed, 85 insertions, 0 deletions

diff --git a/sys/v4l2/gstv4l2tuner.h b/sys/v4l2/gstv4l2tuner.h
new file mode 100644
index 00000000..a768ea2f
--- /dev/null
+++ b/sys/v4l2/gstv4l2tuner.h
@@ -0,0 +1,85 @@
+/* G-Streamer generic V4L2 element - Tuner interface implementation
+ * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * gstv4l2tuner.h: tuner interface implementation for V4L2
+ *
+ * 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_V4L2_TUNER_H__
+#define __GST_V4L2_TUNER_H__
+
+#include <gst/gst.h>
+#include <gst/tuner/tuner.h>
+
+#include "gstv4l2element.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_V4L2_TUNER_CHANNEL \
+  (gst_v4l2_tuner_channel_get_type ())
+#define GST_V4L2_TUNER_CHANNEL(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_TUNER_CHANNEL, \
+			       GstV4l2TunerChannel))
+#define GST_V4L2_TUNER_CHANNEL_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_TUNER_CHANNEL, \
+			    GstV4l2TunerChannelClass))
+#define GST_IS_V4L2_TUNER_CHANNEL(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_TUNER_CHANNEL))
+#define GST_IS_V4L2_TUNER_CHANNEL_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_V4L2_TUNER_CHANNEL))
+
+typedef struct _GstV4l2TunerChannel {
+  GstTunerChannel parent;
+
+  guint32         index;
+  guint32         tuner;
+  guint32         audio;
+} GstV4l2TunerChannel;
+
+typedef struct _GstV4l2TunerChannelClass {
+  GstTunerChannelClass parent;
+} GstV4l2TunerChannelClass;
+
+#define GST_TYPE_V4L2_TUNER_NORM \
+  (gst_v4l2_tuner_norm_get_type ())
+#define GST_V4L2_TUNER_NORM(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_TUNER_NORM, \
+			       GstV4l2TunerNorm))
+#define GST_V4L2_TUNER_NORM_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_TUNER_NORM, \
+			    GstV4l2TunerNormClass))
+#define GST_IS_V4L2_TUNER_NORM(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_TUNER_NORM))
+#define GST_IS_V4L2_TUNER_NORM_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_V4L2_TUNER_NORM))
+
+typedef struct _GstV4l2TunerNorm {
+  GstTunerNorm parent;
+
+  v4l2_std_id  index;
+} GstV4l2TunerNorm;
+
+typedef struct _GstV4l2TunerNormClass {
+  GstTunerNormClass parent;
+} GstV4l2TunerNormClass;
+
+GType	gst_v4l2_tuner_channel_get_type	(void);
+GType	gst_v4l2_tuner_norm_get_type	(void);
+
+void	gst_v4l2_tuner_interface_init	(GstTunerClass *klass);
+
+#endif /* __GST_V4L2_TUNER_H__ */