| /* "$Header: /cvsroot/freeimage/FreeImage/Source/LibTIFF/tif_atari.c,v 1.27 2009/09/06 13:11:27 drolon 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. |
| */ |
| |
| /* |
| * TIFF Library ATARI-specific Routines. |
| */ |
| #include "tiffiop.h" |
| #if defined(__TURBOC__) |
| #include <tos.h> |
| #include <stdio.h> |
| #else |
| #include <osbind.h> |
| #include <fcntl.h> |
| #endif |
| |
| #ifndef O_ACCMODE |
| #define O_ACCMODE 3 |
| #endif |
| |
| #include <errno.h> |
| |
| #define AEFILNF -33 |
| |
| static tsize_t |
| _tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size) |
| { |
| long r; |
| |
| r = Fread((int) fd, size, buf); |
| if (r < 0) { |
| errno = (int)-r; |
| r = -1; |
| } |
| return r; |
| } |
| |
| static tsize_t |
| _tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size) |
| { |
| long r; |
| |
| r = Fwrite((int) fd, size, buf); |
| if (r < 0) { |
| errno = (int)-r; |
| r = -1; |
| } |
| return r; |
| } |
| |
| static toff_t |
| _tiffSeekProc(thandle_t fd, off_t off, int whence) |
| { |
| char buf[256]; |
| long current_off, expected_off, new_off; |
| |
| if (whence == SEEK_END || off <= 0) |
| return Fseek(off, (int) fd, whence); |
| current_off = Fseek(0, (int) fd, SEEK_CUR); /* find out where we are */ |
| if (whence == SEEK_SET) |
| expected_off = off; |
| else |
| expected_off = off + current_off; |
| new_off = Fseek(off, (int) fd, whence); |
| if (new_off == expected_off) |
| return new_off; |
| /* otherwise extend file -- zero filling the hole */ |
| if (new_off < 0) /* error? */ |
| new_off = Fseek(0, (int) fd, SEEK_END); /* go to eof */ |
| _TIFFmemset(buf, 0, sizeof(buf)); |
| while (expected_off > new_off) { |
| off = expected_off - new_off; |
| if (off > sizeof(buf)) |
| off = sizeof(buf); |
| if ((current_off = Fwrite((int) fd, off, buf)) != off) |
| return (current_off > 0) ? |
| new_off + current_off : new_off; |
| new_off += off; |
| } |
| return new_off; |
| } |
| |
| static int |
| _tiffCloseProc(thandle_t fd) |
| { |
| long r; |
| |
| r = Fclose((int) fd); |
| if (r < 0) { |
| errno = (int)-r; |
| r = -1; |
| } |
| return (int)r; |
| } |
| |
| static toff_t |
| _tiffSizeProc(thandle_t fd) |
| { |
| long pos, eof; |
| |
| pos = Fseek(0, (int) fd, SEEK_CUR); |
| eof = Fseek(0, (int) fd, SEEK_END); |
| Fseek(pos, (int) fd, SEEK_SET); |
| return eof; |
| } |
| |
| static int |
| _tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize) |
| { |
| return (0); |
| } |
| |
| static void |
| _tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size) |
| { |
| } |
| |
| /* |
| * Open a TIFF file descriptor for read/writing. |
| */ |
| TIFF* |
| TIFFFdOpen(int fd, const char* name, const char* mode) |
| { |
| TIFF* tif; |
| |
| tif = TIFFClientOpen(name, mode, |
| (thandle_t) fd, |
| _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; |
| long fd; |
| |
| m = _TIFFgetMode(mode, module); |
| if (m == -1) |
| return ((TIFF*)0); |
| if (m & O_TRUNC) { |
| fd = Fcreate(name, 0); |
| } else { |
| fd = Fopen(name, m & O_ACCMODE); |
| if (fd == AEFILNF && m & O_CREAT) |
| fd = Fcreate(name, 0); |
| } |
| if (fd < 0) |
| errno = (int)fd; |
| if (fd < 0) { |
| TIFFErrorExt(0, module, "%s: Cannot open", name); |
| return ((TIFF*)0); |
| } |
| return (TIFFFdOpen(fd, name, mode)); |
| } |
| |
| #include <stdlib.h> |
| |
| tdata_t |
| _TIFFmalloc(tsize_t s) |
| { |
| return (malloc((size_t) s)); |
| } |
| |
| void |
| _TIFFfree(tdata_t p) |
| { |
| free(p); |
| } |
| |
| tdata_t |
| _TIFFrealloc(tdata_t p, tsize_t s) |
| { |
| return (realloc(p, (size_t) s)); |
| } |
| |
| void |
| _TIFFmemset(tdata_t p, int v, size_t c) |
| { |
| memset(p, v, (size_t) c); |
| } |
| |
| void |
| _TIFFmemcpy(tdata_t d, const tdata_t s, size_t c) |
| { |
| memcpy(d, s, (size_t) c); |
| } |
| |
| int |
| _TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c) |
| { |
| return (memcmp(p1, p2, (size_t) c)); |
| } |
| |
| static void |
| atariWarningHandler(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 = atariWarningHandler; |
| |
| static void |
| atariErrorHandler(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 = atariErrorHandler; |