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libv4lconvert-priv.h

/*
#             (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 __LIBV4LCONVERT_PRIV_H
#define __LIBV4LCONVERT_PRIV_H

#include <stdio.h>
#include <sys/types.h>
#include "libv4lconvert.h"
#include "control/libv4lcontrol.h"
#include "processing/libv4lprocessing.h"
#include "tinyjpeg.h"

/* Workaround these potentially missing from videodev2.h */

#ifndef V4L2_PIX_FMT_SPCA501
#define V4L2_PIX_FMT_SPCA501 v4l2_fourcc('S','5','0','1') /* YUYV per line */
#endif

#ifndef V4L2_PIX_FMT_SPCA505
#define V4L2_PIX_FMT_SPCA505 v4l2_fourcc('S','5','0','5') /* YYUV per line */
#endif

#ifndef V4L2_PIX_FMT_SPCA508
#define V4L2_PIX_FMT_SPCA508 v4l2_fourcc('S','5','0','8') /* YUVY per line */
#endif

#ifndef V4L2_PIX_FMT_SPCA561
#define V4L2_PIX_FMT_SPCA561 v4l2_fourcc('S','5','6','1')
#endif

#ifndef V4L2_PIX_FMT_PAC207
#define V4L2_PIX_FMT_PAC207 v4l2_fourcc('P','2','0','7')
#endif

#ifndef V4L2_PIX_FMT_MR97310A
#define V4L2_PIX_FMT_MR97310A v4l2_fourcc('M','3','1','0')
#endif

#ifndef V4L2_PIX_FMT_SN9C2028
#define V4L2_PIX_FMT_SN9C2028 v4l2_fourcc('S', 'O', 'N', 'X')
#endif

#ifndef V4L2_PIX_FMT_SQ905C
#define V4L2_PIX_FMT_SQ905C v4l2_fourcc('9', '0', '5', 'C')
#endif

#ifndef V4L2_PIX_FMT_PJPG
#define V4L2_PIX_FMT_PJPG v4l2_fourcc('P', 'J', 'P', 'G')
#endif

#ifndef V4L2_PIX_FMT_SGBRG8
#define V4L2_PIX_FMT_SGBRG8 v4l2_fourcc('G','B','R','G')
#endif

#ifndef V4L2_PIX_FMT_SGRBG8
#define V4L2_PIX_FMT_SGRBG8 v4l2_fourcc('G','R','B','G')
#endif

#ifndef V4L2_PIX_FMT_SRGGB8
#define V4L2_PIX_FMT_SRGGB8 v4l2_fourcc('R','G','G','B')
#endif

#ifndef V4L2_PIX_FMT_YVYU
#define V4L2_PIX_FMT_YVYU v4l2_fourcc('Y', 'V', 'Y', 'U')
#endif

#ifndef V4L2_PIX_FMT_HM12
#define V4L2_PIX_FMT_HM12 v4l2_fourcc('H', 'M', '1', '2')
#endif

#ifndef V4L2_PIX_FMT_SN9C20X_I420
#define V4L2_PIX_FMT_SN9C20X_I420  v4l2_fourcc('S', '9', '2', '0')
#endif

#ifndef V4L2_PIX_FMT_OV511
#define V4L2_PIX_FMT_OV511 v4l2_fourcc('O', '5', '1', '1')
#endif

#ifndef V4L2_PIX_FMT_OV518
#define V4L2_PIX_FMT_OV518 v4l2_fourcc('O', '5', '1', '8') /* ov518 JPEG */
#endif

#ifndef V4L2_FMT_FLAG_EMULATED
#define V4L2_FMT_FLAG_EMULATED 0x0002
#endif

#define ARRAY_SIZE(x) ((int)sizeof(x)/(int)sizeof((x)[0]))

#define V4LCONVERT_ERROR_MSG_SIZE 256
#define V4LCONVERT_MAX_FRAMESIZES 16

#define V4LCONVERT_ERR(...) \
  snprintf(data->error_msg, V4LCONVERT_ERROR_MSG_SIZE, \
  "v4l-convert: error " __VA_ARGS__)

/* Card flags */
#define V4LCONVERT_IS_UVC                0x01
#define V4LCONVERT_IS_SN9C20X            0x02

/* Pixformat flags */
#define V4LCONVERT_COMPRESSED            0x01 /* Compressed format */
#define V4LCONVERT_NEEDS_CONVERSION      0x02 /* Apps likely wont know this */
#define V4LCONVERT_COMPRESSED_AND_NEEDS_CONVERSION 0x03

struct v4lconvert_data {
  int fd;
  int flags; /* bitfield */
  int control_flags; /* bitfield */
  int supported_src_formats; /* bitfield */
  unsigned int no_formats;
  char error_msg[V4LCONVERT_ERROR_MSG_SIZE];
  struct jdec_private *jdec;
  struct v4l2_frmsizeenum framesizes[V4LCONVERT_MAX_FRAMESIZES];
  unsigned int no_framesizes;
  int convert1_buf_size;
  int convert2_buf_size;
  int rotate90_buf_size;
  int flip_buf_size;
  int convert_pixfmt_buf_size;
  unsigned char *convert1_buf;
  unsigned char *convert2_buf;
  unsigned char *rotate90_buf;
  unsigned char *flip_buf;
  unsigned char *convert_pixfmt_buf;
  struct v4lcontrol_data *control;
  struct v4lprocessing_data *processing;

  /* Data for external decompression helpers code */
  pid_t decompress_pid;
  int decompress_in_pipe[2];  /* Data from helper to us */
  int decompress_out_pipe[2]; /* Data from us to helper */
};

struct v4lconvert_pixfmt {
  unsigned int fmt;
  int flags;
};

void v4lconvert_fixup_fmt(struct v4l2_format *fmt);

void v4lconvert_rgb24_to_yuv420(const unsigned char *src, unsigned char *dest,
  const struct v4l2_format *src_fmt, int bgr, int yvu);

void v4lconvert_yuv420_to_rgb24(const unsigned char *src, unsigned char *dst,
  int width, int height, int yvu);

void v4lconvert_yuv420_to_bgr24(const unsigned char *src, unsigned char *dst,
  int width, int height, int yvu);

void v4lconvert_yuyv_to_rgb24(const unsigned char *src, unsigned char *dst,
  int width, int height);

void v4lconvert_yuyv_to_bgr24(const unsigned char *src, unsigned char *dst,
  int width, int height);

void v4lconvert_yuyv_to_yuv420(const unsigned char *src, unsigned char *dst,
  int width, int height, int yvu);

void v4lconvert_yvyu_to_rgb24(const unsigned char *src, unsigned char *dst,
  int width, int height);

void v4lconvert_yvyu_to_bgr24(const unsigned char *src, unsigned char *dst,
  int width, int height);

void v4lconvert_uyvy_to_rgb24(const unsigned char *src, unsigned char *dst,
  int width, int height);

void v4lconvert_uyvy_to_bgr24(const unsigned char *src, unsigned char *dst,
  int width, int height);

void v4lconvert_uyvy_to_yuv420(const unsigned char *src, unsigned char *dst,
  int width, int height, int yvu);

void v4lconvert_swap_rgb(const unsigned char *src, unsigned char *dst,
  int width, int height);

void v4lconvert_swap_uv(const unsigned char *src, unsigned char *dst,
  const struct v4l2_format *src_fmt);

void v4lconvert_rgb565_to_rgb24(const unsigned char *src, unsigned char *dest,
  int width, int height);

void v4lconvert_rgb565_to_bgr24(const unsigned char *src, unsigned char *dest,
  int width, int height);

void v4lconvert_rgb565_to_yuv420(const unsigned char *src, unsigned char *dest,
  const struct v4l2_format *src_fmt, int yvu);

void v4lconvert_spca501_to_yuv420(const unsigned char *src, unsigned char *dst,
  int width, int height, int yvu);

void v4lconvert_spca505_to_yuv420(const unsigned char *src, unsigned char *dst,
  int width, int height, int yvu);

void v4lconvert_spca508_to_yuv420(const unsigned char *src, unsigned char *dst,
  int width, int height, int yvu);

void v4lconvert_sn9c20x_to_yuv420(const unsigned char *src, unsigned char *dst,
  int width, int height, int yvu);

void v4lconvert_decode_spca561(const unsigned char *src, unsigned char *dst,
  int width, int height);

void v4lconvert_decode_sn9c10x(const unsigned char *src, unsigned char *dst,
  int width, int height);

int v4lconvert_decode_pac207(struct v4lconvert_data *data,
  const unsigned char *inp, int src_size, unsigned char *outp,
  int width, int height);

void v4lconvert_decode_mr97310a(const unsigned char *src, unsigned char *dst,
  int width, int height);

void v4lconvert_decode_sn9c2028(const unsigned char *src, unsigned char *dst,
  int width, int height);

void v4lconvert_decode_sq905c(const unsigned char *src, unsigned char *dst,
  int width, int height);

void v4lconvert_bayer_to_rgb24(const unsigned char *bayer,
  unsigned char *rgb, int width, int height, unsigned int pixfmt);

void v4lconvert_bayer_to_bgr24(const unsigned char *bayer,
  unsigned char *rgb, int width, int height, unsigned int pixfmt);

void v4lconvert_bayer_to_yuv420(const unsigned char *bayer, unsigned char *yuv,
  int width, int height, unsigned int src_pixfmt, int yvu);

void v4lconvert_hm12_to_rgb24(const unsigned char *src,
  unsigned char *dst, int width, int height);

void v4lconvert_hm12_to_bgr24(const unsigned char *src,
  unsigned char *dst, int width, int height);

void v4lconvert_hm12_to_yuv420(const unsigned char *src,
  unsigned char *dst, int width, int height, int yvu);

void v4lconvert_rotate90(unsigned char *src, unsigned char *dest,
  struct v4l2_format *fmt);

void v4lconvert_flip(unsigned char *src, unsigned char *dest,
  struct v4l2_format *fmt, int hflip, int vflip);

void v4lconvert_crop(unsigned char *src, unsigned char *dest,
  const struct v4l2_format *src_fmt, const struct v4l2_format *dest_fmt);

int v4lconvert_helper_decompress(struct v4lconvert_data *data,
  const char *helper, const unsigned char *src, int src_size,
  unsigned char *dest, int dest_size, int width, int height, int command);

void v4lconvert_helper_cleanup(struct v4lconvert_data *data);

#endif

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