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/*
# (C) 2008 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __LIBV4L2_PRIV_H
#define __LIBV4L2_PRIV_H
#include <stdio.h>
#include <pthread.h>
#include <libv4lconvert.h> /* includes videodev2.h for us */
#include "../libv4lconvert/libv4lsyscall-priv.h"
#define V4L2_MAX_DEVICES 16
/* Warning when making this larger the frame_queued and frame_mapped members of
the v4l2_dev_info struct can no longer be a bitfield, so the code needs to
be adjusted! */
#define V4L2_MAX_NO_FRAMES 32
#define V4L2_DEFAULT_NREADBUFFERS 4
#define V4L2_FRAME_BUF_SIZE (4096 * 4096)
#define V4L2_LOG_ERR(...) \
do { \
if (v4l2_log_file) { \
fprintf(v4l2_log_file, "libv4l2: error " __VA_ARGS__); \
fflush(v4l2_log_file); \
} else \
fprintf(stderr, "libv4l2: error " __VA_ARGS__); \
} while(0)
#define V4L2_LOG_WARN(...) \
do { \
if (v4l2_log_file) { \
fprintf(v4l2_log_file, "libv4l2: warning " __VA_ARGS__); \
fflush(v4l2_log_file); \
} else \
fprintf(stderr, "libv4l2: warning " __VA_ARGS__); \
} while(0)
#define V4L2_LOG(...) \
do { \
if (v4l2_log_file) { \
fprintf(v4l2_log_file, "libv4l2: " __VA_ARGS__); \
fflush(v4l2_log_file); \
} \
} while(0)
#define MIN(a,b) (((a)<(b))?(a):(b))
struct v4l2_dev_info {
int fd;
int flags;
int open_count;
/* actually format of the cam */
struct v4l2_format src_fmt;
/* fmt as seen by the application (iow after conversion) */
struct v4l2_format dest_fmt;
pthread_mutex_t stream_lock;
unsigned int no_frames;
unsigned int nreadbuffers;
struct v4lconvert_data *convert;
unsigned char *convert_mmap_buf;
/* Frame bookkeeping is only done when in read or mmap-conversion mode */
unsigned char *frame_pointers[V4L2_MAX_NO_FRAMES];
int frame_sizes[V4L2_MAX_NO_FRAMES];
int frame_queued; /* 1 status bit per frame */
/* mapping tracking of our fake (converting mmap) frame buffers */
unsigned char frame_map_count[V4L2_MAX_NO_FRAMES];
/* buffer when doing conversion and using read() for read() */
int readbuf_size;
unsigned char *readbuf;
};
/* From log.c */
void v4l2_log_ioctl(unsigned long int request, void *arg, int result);
#endif
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