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opencv/3rdparty/libtiff/tif_unix.c

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/*
* 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.
*/
/*
* TIFF Library UNIX-specific Routines. These are should also work with the
* Windows Common RunTime Library.
*/
#include "tif_config.h"
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <errno.h>
#include <stdarg.h>
#include <stdlib.h>
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#ifdef HAVE_IO_H
# include <io.h>
#endif
#include "tiffiop.h"
#define TIFF_IO_MAX 2147483647U
typedef union fd_as_handle_union
{
int fd;
thandle_t h;
} fd_as_handle_union_t;
static tmsize_t
_tiffReadProc(thandle_t fd, void* buf, tmsize_t size)
{
fd_as_handle_union_t fdh;
const size_t bytes_total = (size_t) size;
size_t bytes_read;
tmsize_t count = -1;
if ((tmsize_t) bytes_total != size)
{
errno=EINVAL;
return (tmsize_t) -1;
}
fdh.h = fd;
for (bytes_read=0; bytes_read < bytes_total; bytes_read+=count)
{
char *buf_offset = (char *) buf+bytes_read;
size_t io_size = bytes_total-bytes_read;
if (io_size > TIFF_IO_MAX)
io_size = TIFF_IO_MAX;
count=read(fdh.fd, buf_offset, (TIFFIOSize_t) io_size);
if (count <= 0)
break;
}
if (count < 0)
return (tmsize_t)-1;
return (tmsize_t) bytes_read;
}
static tmsize_t
_tiffWriteProc(thandle_t fd, void* buf, tmsize_t size)
{
fd_as_handle_union_t fdh;
const size_t bytes_total = (size_t) size;
size_t bytes_written;
tmsize_t count = -1;
if ((tmsize_t) bytes_total != size)
{
errno=EINVAL;
return (tmsize_t) -1;
}
fdh.h = fd;
for (bytes_written=0; bytes_written < bytes_total; bytes_written+=count)
{
const char *buf_offset = (char *) buf+bytes_written;
size_t io_size = bytes_total-bytes_written;
if (io_size > TIFF_IO_MAX)
io_size = TIFF_IO_MAX;
count=write(fdh.fd, buf_offset, (TIFFIOSize_t) io_size);
if (count <= 0)
break;
}
if (count < 0)
return (tmsize_t)-1;
return (tmsize_t) bytes_written;
/* return ((tmsize_t) write(fdh.fd, buf, bytes_total)); */
}
static uint64
_tiffSeekProc(thandle_t fd, uint64 off, int whence)
{
fd_as_handle_union_t fdh;
_TIFF_off_t off_io = (_TIFF_off_t) off;
if ((uint64) off_io != off)
{
errno=EINVAL;
return (uint64) -1; /* this is really gross */
}
fdh.h = fd;
return((uint64)_TIFF_lseek_f(fdh.fd,off_io,whence));
}
static int
_tiffCloseProc(thandle_t fd)
{
fd_as_handle_union_t fdh;
fdh.h = fd;
return(close(fdh.fd));
}
static uint64
_tiffSizeProc(thandle_t fd)
{
_TIFF_stat_s sb;
fd_as_handle_union_t fdh;
fdh.h = fd;
if (_TIFF_fstat_f(fdh.fd,&sb)<0)
return(0);
else
return((uint64)sb.st_size);
}
#ifdef HAVE_MMAP
#include <sys/mman.h>
static int
_tiffMapProc(thandle_t fd, void** pbase, toff_t* psize)
{
uint64 size64 = _tiffSizeProc(fd);
tmsize_t sizem = (tmsize_t)size64;
if (size64 && (uint64)sizem==size64) {
fd_as_handle_union_t fdh;
fdh.h = fd;
*pbase = (void*)
mmap(0, (size_t)sizem, PROT_READ, MAP_SHARED, fdh.fd, 0);
if (*pbase != (void*) -1) {
*psize = (tmsize_t)sizem;
return (1);
}
}
return (0);
}
static void
_tiffUnmapProc(thandle_t fd, void* base, toff_t size)
{
(void) fd;
(void) munmap(base, (off_t) size);
}
#else /* !HAVE_MMAP */
static int
_tiffMapProc(thandle_t fd, void** pbase, toff_t* psize)
{
(void) fd; (void) pbase; (void) psize;
return (0);
}
static void
_tiffUnmapProc(thandle_t fd, void* base, toff_t size)
{
(void) fd; (void) base; (void) size;
}
#endif /* !HAVE_MMAP */
/*
* Open a TIFF file descriptor for read/writing.
*/
TIFF*
TIFFFdOpen(int fd, const char* name, const char* mode)
{
TIFF* tif;
fd_as_handle_union_t fdh;
fdh.fd = fd;
tif = TIFFClientOpen(name, mode,
fdh.h,
_tiffReadProc, _tiffWriteProc,
_tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
_tiffMapProc, _tiffUnmapProc);
if (tif)
tif->tif_fd = fd;
return (tif);
}
/*
* Open a TIFF file for read/writing.
*/
TIFF*
TIFFOpen(const char* name, const char* mode)
{
static const char module[] = "TIFFOpen";
int m, fd;
TIFF* tif;
m = _TIFFgetMode(mode, module);
if (m == -1)
return ((TIFF*)0);
/* for cygwin and mingw */
#ifdef O_BINARY
m |= O_BINARY;
#endif
fd = open(name, m, 0666);
if (fd < 0) {
if (errno > 0 && strerror(errno) != NULL ) {
TIFFErrorExt(0, module, "%s: %s", name, strerror(errno) );
} else {
TIFFErrorExt(0, module, "%s: Cannot open", name);
}
return ((TIFF *)0);
}
tif = TIFFFdOpen((int)fd, name, mode);
if(!tif)
close(fd);
return tif;
}
#ifdef __WIN32__
#include <windows.h>
/*
* Open a TIFF file with a Unicode filename, for read/writing.
*/
TIFF*
TIFFOpenW(const wchar_t* name, const char* mode)
{
static const char module[] = "TIFFOpenW";
int m, fd;
int mbsize;
char *mbname;
TIFF* tif;
m = _TIFFgetMode(mode, module);
if (m == -1)
return ((TIFF*)0);
/* for cygwin and mingw */
#ifdef O_BINARY
m |= O_BINARY;
#endif
fd = _wopen(name, m, 0666);
if (fd < 0) {
TIFFErrorExt(0, module, "%ls: Cannot open", name);
return ((TIFF *)0);
}
mbname = NULL;
mbsize = WideCharToMultiByte(CP_ACP, 0, name, -1, NULL, 0, NULL, NULL);
if (mbsize > 0) {
mbname = _TIFFmalloc(mbsize);
if (!mbname) {
TIFFErrorExt(0, module,
"Can't allocate space for filename conversion buffer");
return ((TIFF*)0);
}
WideCharToMultiByte(CP_ACP, 0, name, -1, mbname, mbsize,
NULL, NULL);
}
tif = TIFFFdOpen((int)fd, (mbname != NULL) ? mbname : "<unknown>",
mode);
_TIFFfree(mbname);
if(!tif)
close(fd);
return tif;
}
#endif
void*
_TIFFmalloc(tmsize_t s)
{
if (s == 0)
return ((void *) NULL);
return (malloc((size_t) s));
}
void* _TIFFcalloc(tmsize_t nmemb, tmsize_t siz)
{
if( nmemb == 0 || siz == 0 )
return ((void *) NULL);
return calloc((size_t) nmemb, (size_t)siz);
}
void
_TIFFfree(void* p)
{
free(p);
}
void*
_TIFFrealloc(void* p, tmsize_t s)
{
return (realloc(p, (size_t) s));
}
void
_TIFFmemset(void* p, int v, tmsize_t c)
{
memset(p, v, (size_t) c);
}
void
_TIFFmemcpy(void* d, const void* s, tmsize_t c)
{
memcpy(d, s, (size_t) c);
}
int
_TIFFmemcmp(const void* p1, const void* p2, tmsize_t c)
{
return (memcmp(p1, p2, (size_t) c));
}
static void
unixWarningHandler(const char* module, const char* fmt, va_list ap)
{
if (module != NULL)
fprintf(stderr, "%s: ", module);
fprintf(stderr, "Warning, ");
vfprintf(stderr, fmt, ap);
fprintf(stderr, ".\n");
}
TIFFErrorHandler _TIFFwarningHandler = unixWarningHandler;
static void
unixErrorHandler(const char* module, const char* fmt, va_list ap)
{
if (module != NULL)
fprintf(stderr, "%s: ", module);
vfprintf(stderr, fmt, ap);
fprintf(stderr, ".\n");
}
TIFFErrorHandler _TIFFerrorHandler = unixErrorHandler;
/* vim: set ts=8 sts=8 sw=8 noet: */
/*
* Local Variables:
* mode: c
* c-basic-offset: 8
* fill-column: 78
* End:
*/
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