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, 77 insertions, 0 deletions

diff --git a/gst-libs/gst/tuner/tunerchannel.h b/gst-libs/gst/tuner/tunerchannel.h
new file mode 100644
index 00000000..b8031455
--- /dev/null
+++ b/gst-libs/gst/tuner/tunerchannel.h
@@ -0,0 +1,77 @@
+/* GStreamer Tuner
+ * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * tunerchannel.h: 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.
+ */
+
+#ifndef __GST_TUNER_CHANNEL_H__
+#define __GST_TUNER_CHANNEL_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_TUNER_CHANNEL \
+  (gst_tuner_channel_get_type ())
+#define GST_TUNER_CHANNEL(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TUNER_CHANNEL, \
+			       GstTunerChannel))
+#define GST_TUNER_CHANNEL_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TUNER_CHANNEL, \
+			    GstTunerChannelClass))
+#define GST_IS_TUNER_CHANNEL(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TUNER_CHANNEL))
+#define GST_IS_TUNER_CHANNEL_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TUNER_CHANNEL))
+
+typedef enum {
+  GST_TUNER_CHANNEL_INPUT     = (1<<0),
+  GST_TUNER_CHANNEL_OUTPUT    = (1<<1),
+  GST_TUNER_CHANNEL_FREQUENCY = (1<<2),
+  GST_TUNER_CHANNEL_AUDIO     = (1<<3),
+} GstTunerChannelFlags;
+
+#define GST_TUNER_CHANNEL_HAS_FLAG(channel, flag) \
+  ((channel)->flags & flag)
+
+typedef struct _GstTunerChannel {
+  GObject              parent;
+
+  gchar               *label;
+  GstTunerChannelFlags flags;
+  gulong               min_frequency,
+		       max_frequency;
+  gint                 min_signal,
+		       max_signal;
+} GstTunerChannel;
+
+typedef struct _GstTunerChannelClass {
+  GObjectClass parent;
+
+  /* signals */
+  void (*frequency_changed) (GstTunerChannel *tuner,
+			     gulong           frequency);
+  void (*signal_changed)    (GstTunerChannel *tuner,
+			     gint             signal);
+} GstTunerChannelClass;
+
+GType		gst_tuner_channel_get_type	(void);
+
+G_END_DECLS
+
+#endif /* __GST_TUNER_CHANNEL_H__ */