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nuttx-apps/graphics/tiff/tiff_initialize.c
patacongo bd453b9c81 Code complete on TIFF creation logic 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3968 42af7a65-404d-4744-a932-0658087f49c3
2011-09-21 21:57:11 +00:00

891 lines
30 KiB
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/****************************************************************************
* 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 <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <apps/tiff.h>
#include "tiff_internal.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* Bi-level Images
*
* Offset Description Contents/Notes
* Header: 0 Byte Order "II" or "MM"
* 2 Magic Number 42
* 4 1st IFD offset 10
* 8 [2 bytes padding]
* IFD: 10 Number of Directory Entries 12
* 12 NewSubfileType
* 24 ImageWidth Number of columns is a user parameter
* 36 ImageLength Number of rows is a user parameter
* 48 Compression Hard-coded no compression (for now)
* 60 PhotometricInterpretation Value is a user parameter
* 72 StripOffsets Offset and count determined as strips added
* 84 RowsPerStrip Value is a user parameter
* 96 StripByteCounts Offset and count determined as strips added
* 108 XResolution Value is a user parameter
* 120 YResolution Value is a user parameter
* 132 Resolution Unit Hard-coded to "inches"
* 144 Software
* 156 DateTime
* 168 Next IFD offset 0
* 170 [2 bytes padding]
* Values:
* 172 XResolution Hard-coded to 300/1
* 180 YResolution Hard-coded to 300/1
* 188 "NuttX" Length = 6 (including NUL terminator)
* 194 "YYYY:MM:DD HH:MM:SS" Length = 20 (ncluding NUL terminator)
* 214 [2 bytes padding]
* 216 StripByteCounts Beginning of strip byte counts
* xxx StripOffsets Beginning of strip offsets
* xxx [Probably padding]
* xxx Data for strips Beginning of strip data
*/
#define TIFF_IFD_OFFSET (SIZEOF_TIFF_HEADER+2)
#define TIFF_BILEV_NIFDENTRIES 12
#define TIFF_BILEV_STRIPIFDOFFS 72
#define TIFF_BILEV_STRIPBCIFDOFFS 96
#define TIFF_BILEV_VALOFFSET 172
#define TIFF_BILEV_XRESOFFSET 172
#define TIFF_BILEV_YRESOFFSET 180
#define TIFF_BILEV_SWOFFSET 188
#define TIFF_BILEV_DATEOFFSET 194
#define TIFF_BILEV_STRIPBCOFFSET 216
#define TIFF_SOFTWARE_STRING "NuttX"
#define TIFF_SOFTWARE_STRLEN 6
#define TIFF_DATETIME_FORMAT "%Y:%m:%d %H:%M:%S"
#define TIFF_DATETIME_STRLEN 20
/* Greyscale Images have one additional IFD entry: BitsPerSample (4 or 8)
*
* Header: 0 Byte Order "II" or "MM"
* 2 Magic Number 42
* 4 1st IFD offset 10
* 8 [2 bytes padding]
* IFD: 10 Number of Directory Entries 13
* 12 NewSubfileType
* 24 ImageWidth Number of columns is a user parameter
* 36 ImageLength Number of rows is a user parameter
* 48 BitsPerSample
* 60 Compression Hard-coded no compression (for now)
* 72 PhotometricInterpretation Value is a user parameter
* 84 StripOffsets Offset and count determined as strips added
* 96 RowsPerStrip Value is a user parameter
* 108 StripByteCounts Offset and count determined as strips added
* 120 XResolution Value is a user parameter
* 132 YResolution Value is a user parameter
* 144 Resolution Unit Hard-coded to "inches"
* 156 Software
* 168 DateTime
* 180 Next IFD offset 0
* 182 [2 bytes padding]
* Values:
* 184 XResolution Hard-coded to 300/1
* 192 YResolution Hard-coded to 300/1
* 200 "NuttX" Length = 6 (including NUL terminator)
* 206 "YYYY:MM:DD HH:MM:SS" Length = 20 (ncluding NUL terminator)
* 226 [2 bytes padding]
* 228 StripByteCounts Beginning of strip byte counts
* xxx StripOffsets Beginning of strip offsets
* xxx [Probably padding]
* xxx Data for strips Beginning of strip data
*/
#define TIFF_GREY_NIFDENTRIES 13
#define TIFF_GREY_STRIPIFDOFFS 84
#define TIFF_GREY_STRIPBCIFDOFFS 108
#define TIFF_GREY_VALOFFSET 184
#define TIFF_GREY_XRESOFFSET 184
#define TIFF_GREY_YRESOFFSET 192
#define TIFF_GREY_SWOFFSET 200
#define TIFF_GREY_DATEOFFSET 206
#define TIFF_GREY_STRIPBCOFFSET 228
/* RGB Images have two additional IFD entries: BitsPerSample (8,8,8) and
* SamplesPerPixel (3):
*
* Header: 0 Byte Order "II" or "MM"
* 2 Magic Number 42
* 4 1st IFD offset 10
* 8 [2 bytes padding]
* IFD: 10 Number of Directory Entries 14
* 12 NewSubfileType
* 24 ImageWidth Number of columns is a user parameter
* 36 ImageLength Number of rows is a user parameter
* 48 BitsPerSample 8, 8, 8
* 60 Compression Hard-coded no compression (for now)
* 72 PhotometricInterpretation Value is a user parameter
* 84 StripOffsets Offset and count determined as strips added
* 96 SamplesPerPixel Hard-coded to 3
* 108 RowsPerStrip Value is a user parameter
* 120 StripByteCounts Offset and count determined as strips added
* 132 XResolution Value is a user parameter
* 144 YResolution Value is a user parameter
* 156 Resolution Unit Hard-coded to "inches"
* 168 Software
* 180 DateTime
* 192 Next IFD offset 0
* 194 [2 bytes padding]
* Values:
* 196 XResolution Hard-coded to 300/1
* 204 YResolution Hard-coded to 300/1
* 212 BitsPerSample 8, 8, 8
* 218 [2 bytes padding]
* 220 "NuttX" Length = 6 (including NUL terminator)
* 226 "YYYY:MM:DD HH:MM:SS" Length = 20 (ncluding NUL terminator)
* 246 [2 bytes padding]
* 248 StripByteCounts Beginning of strip byte counts
* xxx StripOffsets Beginning of strip offsets
* xxx [Probably padding]
* xxx Data for strips Beginning of strip data
*/
#define TIFF_RGB_NIFDENTRIES 13
#define TIFF_RGB_STRIPIFDOFFS 84
#define TIFF_RGB_STRIPBCIFDOFFS 120
#define TIFF_RGB_VALOFFSET 196
#define TIFF_RGB_XRESOFFSET 196
#define TIFF_RGB_YRESOFFSET 204
#define TIFF_RGB_BPSOFFSET 212
#define TIFF_RGB_SWOFFSET 220
#define TIFF_RGB_DATEOFFSET 226
#define TIFF_RGB_STRIPBCOFFSET 248
/* Debug *******************************************************************/
#ifndef CONFIG_DEBUG
# undef CONFIG_DEBUG_GRAPHICS
#endif
#ifdef CONFIG_DEBUG_GRAPHICS
# define tiff_offset(o,l) (o) += (l)
# define tiff_checkoffs(o,x) ASSERT((o) == (x));
#else
# define tiff_offset(o,l)
# define tiff_checkoffs(o,x)
#endif
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
static const struct tiff_filefmt_s g_bilevinfo =
{
TIFF_BILEV_NIFDENTRIES, /* nifdentries, Number of IFD entries */
TIFF_BILEV_STRIPIFDOFFS, /* soifdoffset, Offset to StripOffset IFD entry */
TIFF_BILEV_STRIPBCIFDOFFS, /* sbcifdoffset, Offset to StripByteCount IFD entry */
TIFF_BILEV_VALOFFSET, /* valoffset, Offset to first values */
TIFF_BILEV_XRESOFFSET, /* xresoffset, Offset to XResolution values */
TIFF_BILEV_YRESOFFSET, /* yresoffset, Offset to yResolution values */
TIFF_BILEV_SWOFFSET, /* swoffset, Offset to Software string */
TIFF_BILEV_DATEOFFSET, /* dateoffset, Offset to DateTime string */
TIFF_BILEV_STRIPBCOFFSET /* sbcoffset, Offset to StripByteCount values */
};
static const struct tiff_filefmt_s g_greyinfo =
{
TIFF_GREY_NIFDENTRIES, /* nifdentries, Number of IFD entries */
TIFF_GREY_STRIPIFDOFFS, /* soifdoffset, Offset to StripOffset IFD entry */
TIFF_GREY_STRIPBCIFDOFFS, /* sbcifdoffset, Offset to StripByteCount IFD entry */
TIFF_GREY_VALOFFSET, /* valoffset, Offset to first values */
TIFF_GREY_XRESOFFSET, /* xresoffset, Offset to XResolution values */
TIFF_GREY_YRESOFFSET, /* yresoffset, Offset to yResolution values */
TIFF_GREY_SWOFFSET, /* swoffset, Offset to Software string */
TIFF_GREY_DATEOFFSET, /* dateoffset, Offset to DateTime string */
TIFF_GREY_STRIPBCOFFSET /* sbcoffset, Offset to StripByteCount values */
};
static const struct tiff_filefmt_s g_rgbinfo =
{
TIFF_RGB_NIFDENTRIES, /* nifdentries, Number of IFD entries */
TIFF_RGB_STRIPIFDOFFS, /* soifdoffset, Offset to StripOffset IFD entry */
TIFF_RGB_STRIPBCIFDOFFS, /* sbcifdoffset, Offset to StripByteCount IFD entry */
TIFF_RGB_VALOFFSET, /* valoffset, Offset to first values */
TIFF_RGB_XRESOFFSET, /* xresoffset, Offset to XResolution values */
TIFF_RGB_YRESOFFSET, /* yresoffset, Offset to yResolution values */
TIFF_RGB_SWOFFSET, /* swoffset, Offset to Software string */
TIFF_RGB_DATEOFFSET, /* dateoffset, Offset to DateTime string */
TIFF_RGB_STRIPBCOFFSET /* sbcoffset, Offset to StripByteCount values */
};
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: tiff_putheader
*
* 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_putheader(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, TIFF_IFD_OFFSET);
/* Write the header to the output file */
ret = tiff_write(info->outfd, &hdr, SIZEOF_TIFF_HEADER);
if (ret != OK)
{
return ret;
}
/* Two pad bytes following the header */
ret = tiff_putint16(info->outfd, 0);
return ret;
}
/****************************************************************************
* Name: tiff_putifdentry
*
* Description:
* Write an IFD entry to outfile
*
* Input Parameters:
* info - A pointer to the caller allocated parameter passing/TIFF state
* instance.
* tag - The value for the IFD tag field
* type - The value for the IFD type field
* count - The value for the IFD count field
* offset - The value for the IFD offset field
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
static int tiff_putifdentry(FAR struct tiff_info_s *info, uint16_t tag,
uint16_t type, uint32_t count, uint32_t offset)
{
struct tiff_ifdentry_s ifd;
tiff_put16(ifd.tag, tag);
tiff_put16(ifd.type, type);
tiff_put32(ifd.count, count);
tiff_put32(ifd.offset, offset);
return tiff_write(info->outfd, &ifd, SIZEOF_IFD_ENTRY);
}
/****************************************************************************
* Name: tiff_putifdentry
*
* Description:
* Write an IFD with a 16-bit immediate value
*
* Input Parameters:
* info - A pointer to the caller allocated parameter passing/TIFF state
* instance.
* tag - The value for the IFD tag field
* type - The value for the IFD type field
* count - The value for the IFD count field
* value - The 16-bit immediate value
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
static int tiff_putifdentry16(FAR struct tiff_info_s *info, uint16_t tag,
uint16_t type, uint32_t count, uint16_t value)
{
union
{
uint8_t b[4];
uint32_t w;
} u;
u.w = 0;
tiff_put16(u.b, value);
return tiff_putifdentry(info, tag, count, type, u.w);
}
/****************************************************************************
* Name: tiff_datetime
*
* Description:
* Get the DateTime string
*
* Input Parameters:
*
*
* Returned Value:
* Zero (OK) on success. A negated errno value on failure.
*
****************************************************************************/
static int tiff_datetime(FAR char *timbuf, unsigned int buflen)
{
struct timespec ts;
struct tm tm;
int ret;
/* Get the current time */
ret = clock_gettime(CLOCK_REALTIME, &ts);
if (ret < 0)
{
gdbg("clock_gettime failed: %d\n", errno);
return ERROR;
}
/* Break the current time up into the format needed by strftime */
(void)gmtime_r((FAR const time_t*)&ts.tv_sec, &tm);
/* Comvert the current time in the TIFF format */
(void)strftime(timbuf, buflen, TIFF_DATETIME_FORMAT, &tm);
return OK;
}
/****************************************************************************
* 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)
{
uint16_t val16;
#if CONFIG_DEBUG_GRAPHICS
off_t offset = 0;
#endif
char timbuf[TIFF_DATETIME_STRLEN + 8];
int ret = -EINVAL;
DEBUGASSERT(info && info->outfile && info->tmpfile1 && info->tmpfile2);
/* Open all output files */
info->outfd = open(info->outfile, O_RDWR|O_CREAT|O_TRUNC, 0666);
if (info->outfd < 0)
{
gdbg("Failed to open %s for reading/writing: %d\n", info->outfile, errno);
goto errout;
}
info->tmp1fd = open(info->tmpfile1, O_RDWR|O_CREAT|O_TRUNC, 0666);
if (info->tmp1fd < 0)
{
gdbg("Failed to open %s for reading/writing: %d\n", info->tmpfile1, errno);
goto errout;
}
info->tmp2fd = open(info->tmpfile1, O_RDWR|O_CREAT|O_TRUNC, 0666);
if (info->tmp2fd < 0)
{
gdbg("Failed to open %s for reading/writing: %d\n", info->tmpfile1, errno);
goto errout;
}
/* Make some decisions using the color format. Only the following are
* supported:
*/
info->pps = info->imgwidth * info->rps; /* Pixels per strip */
switch (info->colorfmt)
{
case FB_FMT_Y1: /* BPP=1, monochrome, 0=black */
info->filefmt = &g_bilevinfo; /* Bi-level file image file info */
info->imgflags = IMGFLAGS_FMT_Y1; /* Bit encoded image characteristics */
info->bps = (info->pps + 7) >> 3; /* Bytes per strip */
break;
case FB_FMT_Y4: /* BPP=4, 4-bit greyscale, 0=black */
info->filefmt = &g_greyinfo; /* Greyscale file image file info */
info->imgflags = IMGFLAGS_FMT_Y4; /* Bit encoded image characteristics */
info->bps = (info->pps + 1) >> 1; /* Bytes per strip */
break;
case FB_FMT_Y8: /* BPP=8, 8-bit greyscale, 0=black */
info->filefmt = &g_greyinfo; /* Greyscale file image file info */
info->imgflags = IMGFLAGS_FMT_Y8; /* Bit encoded image characteristics */
info->bps = info->pps; /* Bytes per strip */
break;
case FB_FMT_RGB16_565: /* BPP=16 R=6, G=6, B=5 */
info->filefmt = &g_rgbinfo; /* RGB file image file info */
info->imgflags = IMGFLAGS_FMT_RGB16_565; /* Bit encoded image characteristics */
info->bps = 3 * info->pps; /* Bytes per strip */
break;
case FB_FMT_RGB24: /* BPP=24 R=8, G=8, B=8 */
info->filefmt = &g_rgbinfo; /* RGB file image file info */
info->imgflags = IMGFLAGS_FMT_RGB24; /* Bit encoded image characteristics */
info->bps = 3 *info->pps; /* Bytes per strip */
break;
default:
gdbg("Unsupported color format: %d\n", info->colorfmt);
return -EINVAL;
}
/* Write the TIFF header data to the outfile:
*
* Header: 0 Byte Order "II" or "MM"
* 2 Magic Number 42
* 4 1st IFD offset 10
* 8 [2 bytes padding]
*/
ret = tiff_putheader(info);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, TIFF_IFD_OFFSET);
/* Write the Number of directory entries
*
* All formats: Offset 10 Number of Directory Entries 12
*/
ret = tiff_putint16(info->outfd, info->filefmt->nifdentries);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, 2);
/* Write the NewSubfileType IFD entry
*
* All formats: Offset 12 NewSubfileType
*/
ret = tiff_putifdentry16(info, IFD_TAG_NEWSUBFILETYPE, IFD_FIELD_LONG, 1, 0);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
/* Write ImageWidth and ImageLength
*
* All formats: Offset 24 ImageWidth Number of columns is a user parameter
* 36 ImageLength Number of rows is a user parameter
*/
ret = tiff_putifdentry16(info, IFD_TAG_IMAGEWIDTH, IFD_FIELD_SHORT, 1, info->imgwidth);
if (ret == OK)
{
ret= tiff_putifdentry16(info, IFD_TAG_IMAGELENGTH, IFD_FIELD_SHORT, 1, info->imgheight);
}
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, 2*SIZEOF_IFD_ENTRY);
/* Write BitsPerSample
*
* Bi-level Images: None
* Greyscale: Offset 48 BitsPerSample (4 or 8)
* RGB: Offset 48 BitsPerSample (8,8,8)
*/
tiff_checkoffs(offset, 48);
if (IMGFLAGS_ISGREY(info->imgflags))
{
if (IMGFLAGS_ISGREY8(info->imgflags))
{
val16 = 8;
}
else
{
val16 = 4;
}
ret = tiff_putifdentry16(info, IFD_TAG_BITSPERSAMPLE, IFD_FIELD_SHORT, 1, val16);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
}
else if (IMGFLAGS_ISRGB(info->imgflags))
{
ret = tiff_putifdentry(info, IFD_TAG_BITSPERSAMPLE, IFD_FIELD_SHORT, 3, TIFF_RGB_BPSOFFSET);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
}
/* Write Compression:
*
* Bi-level Images: Offset 48 Hard-coded no compression (for now)
* Greyscale: Offset 60 " " " " "" " " " " " "
* RGB: Offset 60 " " " " "" " " " " " "
*/
ret = tiff_putifdentry16(info, IFD_TAG_COMPRESSION, IFD_FIELD_SHORT, 1, TAG_COMP_NONE);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
/* Write PhotometricInterpretation:
*
* Bi-level Images: Offset 48 Hard-coded BlackIsZero
* Greyscale: Offset 72 Hard-coded BlackIsZero
* RGB: Offset 72 Hard-coded RGB
*/
if (IMGFLAGS_ISRGB(info->imgflags))
{
val16 = TAG_PMI_BLACK;
}
else
{
val16 = TAG_PMI_RGB;
}
ret = tiff_putifdentry16(info, IFD_TAG_PMI, IFD_FIELD_SHORT, 1, val16);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
/* Write StripOffsets:
*
* Bi-level Images: Offset 72 Value determined by switch statement above
* Greyscale: Offset 84 Value determined by switch statement above
* RGB: Offset 84 Value determined by switch statement above
*/
tiff_checkoffs(offset, info->filefmt->soifdoffset);
ret = tiff_putifdentry(info, IFD_TAG_STRIPOFFSETS, IFD_FIELD_LONG, 0, 0);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
/* Write SamplesPerPixel
*
* Bi-level Images: N/A
* Greyscale: N/A
* RGB: Offset 96 Hard-coded to 3
*/
if (IMGFLAGS_ISRGB(info->imgflags))
{
ret = tiff_putifdentry16(info, IFD_TAG_SAMPLESPERPIXEL, IFD_FIELD_SHORT, 1, 3);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
}
/* Write RowsPerStrip:
*
* Bi-level Images: Offset 84 Value is a user parameter
* Greyscale: Offset 96 Value is a user parameter
* RGB: Offset 108 Value is a user parameter
*/
ret = tiff_putifdentry16(info, IFD_TAG_ROWSPERSTRIP, IFD_FIELD_SHORT, 1, info->rps);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
/* Write StripByteCounts:
*
* Bi-level Images: Offset 96 Count determined as strips added, Value offset = 216
* Greyscale: Offset 108 Count determined as strips added, Value offset = 228
* RGB: Offset 120 Count determined as strips added, Value offset = 248
*/
tiff_checkoffs(offset, info->filefmt->sbcifdoffset);
ret = tiff_putifdentry(info, IFD_TAG_STRIPCOUNTS, IFD_FIELD_LONG, 0, info->filefmt->sbcoffset);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
/* Write XResolution and YResolution:
*
* Bi-level Images: Offset 108 and 120, Values are a user parameters
* Greyscale: Offset 120 and 132, Values are a user parameters
* RGB: Offset 132 and 144, Values are a user parameters
*/
ret = tiff_putifdentry(info, IFD_TAG_XRESOLUTION, IFD_FIELD_RATIONAL, 1, info->filefmt->xresoffset);
if (ret == OK)
{
ret = tiff_putifdentry(info, IFD_TAG_YRESOLUTION, IFD_FIELD_RATIONAL, 1, info->filefmt->yresoffset);
}
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, 2*SIZEOF_IFD_ENTRY);
/* Write ResolutionUnit:
*
* Bi-level Images: Offset 132, Hard-coded to "inches"
* Greyscale: Offset 144, Hard-coded to "inches"
* RGB: Offset 156, Hard-coded to "inches"
*/
ret = tiff_putifdentry16(info, IFD_TAG_RESUNIT, IFD_FIELD_SHORT, 1, TAG_RESUNIT_INCH);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
/* Write Software:
*
* Bi-level Images: Offset 144 Count, Hard-coded "NuttX"
* Greyscale: Offset 156 Count, Hard-coded "NuttX"
* RGB: Offset 168 Count, Hard-coded "NuttX"
*/
tiff_checkoffs(offset, info->filefmt->sbcifdoffset);
ret = tiff_putifdentry(info, IFD_TAG_SOFTWARE, IFD_FIELD_ASCII, TIFF_SOFTWARE_STRLEN, info->filefmt->swoffset);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
/* Write DateTime:
*
* Bi-level Images: Offset 156 Count, Format "YYYY:MM:DD HH:MM:SS"
* Greyscale: Offset 168 Count, Format "YYYY:MM:DD HH:MM:SS"
* RGB: Offset 180 Count, Format "YYYY:MM:DD HH:MM:SS"
*/
tiff_checkoffs(offset, info->filefmt->sbcifdoffset);
ret = tiff_putifdentry(info, IFD_TAG_DATETIME, IFD_FIELD_ASCII, TIFF_DATETIME_STRLEN, info->filefmt->dateoffset);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, SIZEOF_IFD_ENTRY);
/* Write Next IFD Offset and 2 bytes of padding:
*
* Bi-level Images: Offset 168, Next IFD offset
* Offset 170, [2 bytes padding]
* Greyscale: Offset 180, Next IFD offset
* Offset 182, [2 bytes padding]
* RGB: Offset 192, Next IFD offset
* Offset 194, [2 bytes padding]
*/
ret = tiff_putint32(info->outfd, 0);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, 4);
/* Now we begin the value section of the file */
tiff_checkoffs(offset, info->filefmt->valoffset);
/* Write the XResolution and YResolution data:
*
* Bi-level Images: Offset 172 Count, Hard-coded to 300/1
* Offset 180 Count, Hard-coded to 300/1
* Greyscale: Offset 184 Count, Hard-coded to 300/1
* Offset 192 Count, Hard-coded to 300/1
* RGB: Offset 196 Count, Hard-coded to 300/1
* Offset 204 Count, Hard-coded to 300/1
*/
tiff_checkoffs(offset, info->filefmt->xresoffset);
ret = tiff_putint32(info->outfd, 300);
if (ret == OK)
{
ret = tiff_putint32(info->outfd, 1);
}
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, 8);
tiff_checkoffs(offset, info->filefmt->yresoffset);
ret = tiff_putint32(info->outfd, 300);
if (ret == OK)
{
ret = tiff_putint32(info->outfd, 1);
}
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, 8);
/* Write the Software string:
*
*
* Bi-level Images: Offset 188, Hard-coded "NuttX"
* Greyscale: Offset 200, Hard-coded "NuttX"
* RGB: Offset 220, Hard-coded "NuttX"
*/
tiff_checkoffs(offset, info->filefmt->xresoffset);
ret = tiff_putstring(info->outfd, TIFF_SOFTWARE_STRING, TIFF_SOFTWARE_STRLEN);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, TIFF_SOFTWARE_STRLEN);
/* Write the DateTime string:
*
*
* Bi-level Images: Offset 188, Format "YYYY:MM:DD HH:MM:SSS"
* Greyscale: Offset 200, Hard-coded "NuttX"
* RGB: Offset 220, Hard-coded "NuttX"
*/
tiff_checkoffs(offset, info->filefmt->dateoffset);
ret = tiff_datetime(timbuf, TIFF_DATETIME_STRLEN + 8);
if (ret < 0)
{
goto errout;
}
ret = tiff_putstring(info->outfd, timbuf, TIFF_DATETIME_STRLEN);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, TIFF_DATETIME_STRLEN);
/* Add two bytes of padding */
ret = tiff_putint16(info->outfd, 0);
if (ret < 0)
{
goto errout;
}
tiff_offset(offset, 2);
/* And that should do it! */
tiff_checkoffs(offset, info->filefmt->sbcoffset);
info->outsize = info->filefmt->sbcoffset;
return OK;
errout:
tiff_abort(info);
return ret;
}
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