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/*
# (C) 2008-2009 Elmar Kleijn <elmar_kleijn@hotmail.com>
# (C) 2008-2009 Sjoerd Piepenbrink <need4weed@gmail.com>
# (C) 2008-2009 Hans de Goede <hdegoede@redhat.com>
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# This program 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
*/
#ifndef __LIBV4LPROCESSING_PRIV_H
#define __LIBV4LPROCESSING_PRIV_H
#include "../control/libv4lcontrol.h"
#include "../libv4lsyscall-priv.h"
#define V4L2PROCESSING_UPDATE_RATE 10
struct v4lprocessing_data {
struct v4lcontrol_data *control;
int fd;
int do_process;
int controls_changed;
/* True if any of the lookup tables does not contain
linear 0-255 */
int lookup_table_active;
/* Counts the number of processed frames until a
V4L2PROCESSING_UPDATE_RATE overflow happens */
int lookup_table_update_counter;
/* RGB/BGR lookup tables */
unsigned char comp1[256];
unsigned char green[256];
unsigned char comp2[256];
/* Filter private data for filters which need it */
/* whitebalance.c data */
int green_avg;
int comp1_avg;
int comp2_avg;
/* gamma.c data */
int last_gamma;
unsigned char gamma_table[256];
/* autogain.c data */
int last_gain_correction;
};
struct v4lprocessing_filter {
/* Returns 1 if the filter is active */
int (*active)(struct v4lprocessing_data *data);
/* Returns 1 if any of the lookup tables was changed */
int (*calculate_lookup_tables)(struct v4lprocessing_data *data,
unsigned char *buf, const struct v4l2_format *fmt);
};
extern const struct v4lprocessing_filter whitebalance_filter;
extern const struct v4lprocessing_filter autogain_filter;
extern const struct v4lprocessing_filter gamma_filter;
#endif
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