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author | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2015-11-06 07:14:47 +0100 |
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committer | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2015-11-06 07:14:47 +0100 |
commit | d479dd1aab1c1cb907932c6595b0ef33523fc797 (patch) | |
tree | ad7d454b9edaae3d8892d84cd8f8ef5c2697b79b /tiff/man/TIFFOpen.3tiff | |
parent | 9491825ddff7a294d1f49061bae7044e426aeb2e (diff) |
Imported Upstream version 1.8.3upstream/1.8.3
Diffstat (limited to 'tiff/man/TIFFOpen.3tiff')
-rwxr-xr-x | tiff/man/TIFFOpen.3tiff | 279 |
1 files changed, 0 insertions, 279 deletions
diff --git a/tiff/man/TIFFOpen.3tiff b/tiff/man/TIFFOpen.3tiff deleted file mode 100755 index f420931..0000000 --- a/tiff/man/TIFFOpen.3tiff +++ /dev/null @@ -1,279 +0,0 @@ -.\" $Id: TIFFOpen.3tiff,v 1.2 2005-07-01 12:36:22 dron Exp $ -.\" -.\" Copyright (c) 1988-1997 Sam Leffler -.\" Copyright (c) 1991-1997 Silicon Graphics, Inc. -.\" -.\" Permission to use, copy, modify, distribute, and sell this software and -.\" its documentation for any purpose is hereby granted without fee, provided -.\" that (i) the above copyright notices and this permission notice appear in -.\" all copies of the software and related documentation, and (ii) the names of -.\" Sam Leffler and Silicon Graphics may not be used in any advertising or -.\" publicity relating to the software without the specific, prior written -.\" permission of Sam Leffler and Silicon Graphics. -.\" -.\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, -.\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY -.\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. -.\" -.\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR -.\" ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, -.\" OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -.\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF -.\" LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE -.\" OF THIS SOFTWARE. -.\" -.if n .po 0 -.TH TIFFOpen 3TIFF "July 1, 2005" "libtiff" -.SH NAME -TIFFOpen, TIFFFdOpen, TIFFClientOpen \- open a -.SM TIFF -file for reading or writing -.SH SYNOPSIS -.B "#include <tiffio.h>" -.sp -.BI "TIFF* TIFFOpen(const char *" filename ", const char *" mode ")" -.br -.BI "TIFF* TIFFFdOpen(const int " fd ", const char *" filename ", const char *" mode ")" -.sp -.B "typedef tsize_t (*TIFFReadWriteProc)(thandle_t, tdata_t, tsize_t);" -.br -.B "typedef toff_t (*TIFFSeekProc)(thandle_t, toff_t, int);" -.br -.B "typedef int (*TIFFCloseProc)(thandle_t);" -.br -.B "typedef toff_t (*TIFFSizeProc)(thandle_t);" -.br -.B "typedef int (*TIFFMapFileProc)(thandle_t, tdata_t*, toff_t*);" -.br -.B "typedef void (*TIFFUnmapFileProc)(thandle_t, tdata_t, toff_t);" -.sp -.BI "TIFF* TIFFClientOpen(const char *" filename ", const char *" mode ", thandle_t " clientdata ", TIFFReadWriteProc " readproc ", TIFFReadWriteProc " writeproc ", TIFFSeekProc " seekproc ", TIFFCloseProc " closeproc ", TIFFSizeProc " sizeproc ", TIFFMapFileProc " mapproc ", TIFFUnmapFileProc " unmapproc ")" -.SH DESCRIPTION -.IR TIFFOpen -opens a -.SM TIFF -file whose name is -.I filename -and returns a handle to be used in subsequent calls to routines in -.IR libtiff . -If the open operation fails, then zero is returned. -The -.I mode -parameter specifies if the file is to be opened for reading (``r''), -writing (``w''), or appending (``a'') and, optionally, whether -to override certain default aspects of library operation (see below). -When a file is opened for appending, existing data will not -be touched; instead new data will be written as additional subfiles. -If an existing file is opened for writing, all previous data is -overwritten. -.PP -If a file is opened for reading, the first -.SM TIFF -directory in the file is automatically read -(also see -.IR TIFFSetDirectory (3TIFF) -for reading directories other than the first). -If a file is opened for writing or appending, a default directory -is automatically created for writing subsequent data. -This directory has all the default values specified in -.SM TIFF -Revision 6.0: -.IR BitsPerSample =1, -.IR ThreshHolding "=bilevel art scan," -.IR FillOrder =1 -(most significant bit of each data byte is filled first), -.IR Orientation =1 -(the 0th row represents the visual top of the image, and the 0th -column represents the visual left hand side), -.IR SamplesPerPixel =1, -.IR RowsPerStrip =infinity, -.IR ResolutionUnit =2 -(inches), and -.IR Compression =1 -(no compression). -To alter these values, or to define values for additional fields, -.IR TIFFSetField (3TIFF) -must be used. -.PP -.IR TIFFFdOpen -is like -.IR TIFFOpen -except that it opens a -.SM TIFF -file given an open file descriptor -.IR fd . -The file's name and mode must reflect that of the open descriptor. -The object associated with the file descriptor -.BR "must support random access" . -.PP -.IR TIFFClientOpen -is like -.IR TIFFOpen -except that the caller supplies a collection of functions that the -library will use to do \s-1UNIX\s+1-like I/O operations. -The -.I readproc -and -.I writeproc -are called to read and write data at the current file position. -.I seekproc -is called to change the current file position a la -.IR lseek (2). -.I closeproc -is invoked to release any resources associated with an open file. -.I sizeproc -is invoked to obtain the size in bytes of a file. -.I mapproc -and -.I unmapproc -are called to map and unmap a file's contents in memory; c.f. -.IR mmap (2) -and -.IR munmap (2). -The -.I clientdata -parameter is an opaque ``handle'' passed to the client-specified -routines passed as parameters to -.IR TIFFClientOpen . -.SH OPTIONS -The open mode parameter can include the following flags in -addition to the ``r'', ``w'', and ``a'' flags. -Note however that option flags must follow the read-write-append -specification. -.TP -.B l -When creating a new file force information be written with -Little-Endian byte order (but see below). -By default the library will create new files using the native -.SM CPU -byte order. -.TP -.B b -When creating a new file force information be written with -Big-Endian byte order (but see below). -By default the library will create new files using the native -.SM CPU -byte order. -.TP -.B L -Force image data that is read or written to be treated with -bits filled from Least Significant Bit (\s-1LSB\s+1) to -Most Significant Bit (\s-1MSB\s+1). -Note that this is the opposite to the way the library has -worked from its inception. -.TP -.B B -Force image data that is read or written to be treated with -bits filled from Most Significant Bit (\s-1MSB\s+1) to -Least Significant Bit (\s-1LSB\s+1); this is the default. -.TP -.B H -Force image data that is read or written to be treated with -bits filled in the same order as the native -.SM CPU. -.TP -.B M -Enable the use of memory-mapped files for images opened read-only. -If the underlying system does not support memory-mapped files -or if the specific image being opened cannot be memory-mapped -then the library will fallback to using the normal system interface -for reading information. -By default the library will attempt to use memory-mapped files. -.TP -.B m -Disable the use of memory-mapped files. -.TP -.B C -Enable the use of ``strip chopping'' when reading images -that are comprised of a single strip or tile of uncompressed data. -Strip chopping is a mechanism by which the library will automatically -convert the single-strip image to multiple strips, -each of which has about 8 Kilobytes of data. -This facility can be useful in reducing the amount of memory used -to read an image because the library normally reads each strip -in its entirety. -Strip chopping does however alter the apparent contents of the -image because when an image is divided into multiple strips it -looks as though the underlying file contains multiple separate -strips. -Finally, note that default handling of strip chopping is a compile-time -configuration parameter. -The default behaviour, for backwards compatibility, is to enable -strip chopping. -.TP -.B c -Disable the use of strip chopping when reading images. -.TP -.B h -Read TIFF header only, do not load the first image directory. That could be -useful in case of the broken first directory. We can open the file and proceed -to the other directories. -.SH "BYTE ORDER" -The -.SM TIFF -specification (\fBall versions\fP) states that compliant readers -.IR "must be capable of reading images written in either byte order" . -Nonetheless some software that claims to support the reading of -.SM TIFF -images is incapable of reading images in anything but the native -.SM CPU -byte order on which the software was written. -(Especially notorious -are applications written to run on Intel-based machines.) -By default the library will create new files with the native -byte-order of the -.SM CPU -on which the application is run. -This ensures optimal performance and is portable to any application -that conforms to the TIFF specification. -To force the library to use a specific byte-order when creating -a new file the ``b'' and ``l'' option flags may be included in -the call to open a file; for example, ``wb'' or ``wl''. -.SH "RETURN VALUES" -Upon successful completion -.IR TIFFOpen , -.IR TIFFFdOpen , -and -.IR TIFFClientOpen -return a -.SM TIFF -pointer. -Otherwise, NULL is returned. -.SH DIAGNOSTICS -All error messages are directed to the -.IR TIFFError (3TIFF) -routine. -Likewise, warning messages are directed to the -.IR TIFFWarning (3TIFF) -routine. -.PP -\fB"%s": Bad mode\fP. -The specified -.I mode -parameter was not one of ``r'' (read), ``w'' (write), or ``a'' (append). -.PP -.BR "%s: Cannot open" . -.IR TIFFOpen () -was unable to open the specified filename for read/writing. -.PP -.BR "Cannot read TIFF header" . -An error occurred while attempting to read the header information. -.PP -.BR "Error writing TIFF header" . -An error occurred while writing the default header information -for a new file. -.PP -.BR "Not a TIFF file, bad magic number %d (0x%x)" . -The magic number in the header was not (hex) -0x4d4d or (hex) 0x4949. -.PP -.BR "Not a TIFF file, bad version number %d (0x%x)" . -The version field in the header was not 42 (decimal). -.PP -.BR "Cannot append to file that has opposite byte ordering" . -A file with a byte ordering opposite to the native byte -ordering of the current machine was opened for appending (``a''). -This is a limitation of the library. -.SH "SEE ALSO" -.IR libtiff (3TIFF), -.IR TIFFClose (3TIFF) |