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aa94247770
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!
104 lines
3 KiB
C
104 lines
3 KiB
C
/* GStreamer Color Balance
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* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* colorbalancechannel.c: colorbalance channel object design
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "colorbalancechannel.h"
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enum {
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/* FILL ME */
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SIGNAL_VALUE_CHANGED,
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LAST_SIGNAL
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};
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static void gst_color_balance_channel_class_init (GstColorBalanceChannelClass *klass);
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static void gst_color_balance_channel_init (GstColorBalanceChannel *balance);
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static void gst_color_balance_channel_dispose (GObject *object);
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static GObjectClass *parent_class = NULL;
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static guint signals[LAST_SIGNAL] = { 0 };
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GType
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gst_color_balance_channel_get_type (void)
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{
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static GType gst_color_balance_channel_type = 0;
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if (!gst_color_balance_channel_type) {
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static const GTypeInfo color_balance_channel_info = {
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sizeof (GstColorBalanceChannelClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_color_balance_channel_class_init,
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NULL,
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NULL,
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sizeof (GstColorBalanceChannel),
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0,
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(GInstanceInitFunc) gst_color_balance_channel_init,
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NULL
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};
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gst_color_balance_channel_type =
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g_type_register_static (G_TYPE_OBJECT,
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"GstColorBalanceChannel",
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&color_balance_channel_info, 0);
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}
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return gst_color_balance_channel_type;
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}
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static void
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gst_color_balance_channel_class_init (GstColorBalanceChannelClass *klass)
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{
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GObjectClass *object_klass = (GObjectClass *) klass;
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parent_class = g_type_class_ref (G_TYPE_OBJECT);
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signals[SIGNAL_VALUE_CHANGED] =
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g_signal_new ("value_changed", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstColorBalanceChannelClass,
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value_changed),
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NULL, NULL, g_cclosure_marshal_VOID__INT,
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G_TYPE_NONE, 1, G_TYPE_INT);
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object_klass->dispose = gst_color_balance_channel_dispose;
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}
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static void
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gst_color_balance_channel_init (GstColorBalanceChannel *channel)
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{
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channel->label = NULL;
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channel->min_value = channel->max_value = 0;
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}
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static void
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gst_color_balance_channel_dispose (GObject *object)
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{
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GstColorBalanceChannel *channel = GST_COLOR_BALANCE_CHANNEL (object);
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if (channel->label)
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g_free (channel->label);
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if (parent_class->dispose)
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parent_class->dispose (object);
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}
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