/****************************************************************************
* apps/graphics/tiff/tiff_initialize.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <unistd.h>
#include <fcntl.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <apps/tiff.h>
#include "tiff_internal.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: tiff_writeheader
*
* Description:
* Setup to create a new TIFF file.
*
* Input Parameters:
* info - A pointer to the caller allocated parameter passing/TIFF state instance.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
static inline int tiff_writeheader(FAR struct tiff_info_s *info)
{
struct tiff_header_s hdr;
int ret;
/* 0-1: Byte order */
#ifdef CONFIG_ENDIAN_BIG
hdr.order[0] = 'M'; /* "MM"=big endian */
hdr.order[1] = 'M';
#else
hdr.order[0] = 'I'; /* "II"=little endian */
hdr.order[1] = 'I';
#endif
/* 2-3: 42 in appropriate byte order */
tiff_put16(hdr.magic, 42);
/* 4-7: Offset to the first IFD */
tiff_put16(hdr.offset, sizeof(struct tiff_header_s));
/* Write the header to the output file */
ret = tiff_write(info->outfd, &hdr, sizeof(struct tiff_header_s));
if (ret == OK)
{
info->outsize = sizeof(struct tiff_header_s);
}
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: tiff_initialize
*
* Description:
* Setup to create a new TIFF file.
*
* Input Parameters:
* info - A pointer to the caller allocated parameter passing/TIFF state instance.
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
int tiff_initialize(FAR struct tiff_info_s *info)
{
int ret = -EINVAL;
DEBUGASSERT(info && info->outfile && info->tmpfile1 && info->tmpfile2);
/* Open all output files */
info->outfd = open(info->outfile, O_WRONLY|O_CREAT|O_TRUNC, 0666);
if (info->outfd < 0)
{
gdbg("Failed to open %s for writing: %d\n", info->outfile, errno);
goto errout;
}
info->tmp1fd = open(info->tmpfile1, O_WRONLY|O_CREAT|O_TRUNC, 0666);
if (info->tmp1fd < 0)
{
gdbg("Failed to open %s for writing: %d\n", info->tmpfile1, errno);
goto errout_with_outfd;
}
info->tmp2fd = open(info->tmpfile1, O_WRONLY|O_CREAT|O_TRUNC, 0666);
if (info->tmp2fd < 0)
{
gdbg("Failed to open %s for writing: %d\n", info->tmpfile1, errno);
goto errout_with_tmp1fd;
}
/* Write the TIFF header data to the outfile */
ret = tiff_writeheader(info);
if (ret < 0)
{
goto errout_with_tmp2fd;
}
/* Write the IFD data to the outfile */
#warning "Missing Logic"
return OK;
errout_with_tmp2fd:
(void)close(info->tmp2fd);
info->tmp2fd = -1;
errout_with_tmp1fd:
(void)close(info->tmp1fd);
info->tmp1fd = -1;
errout_with_outfd:
(void)close(info->outfd);
info->outfd = -1;
errout:
return ret;
}
