Visualization Library 2.0.0-b5

A lightweight C++ OpenGL middleware for 2D/3D graphics

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tif_dumpmode.c
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1 /* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_dumpmode.c,v 1.4 2005/12/21 12:23:13 joris Exp $ */
2 
3 /*
4  * Copyright (c) 1988-1997 Sam Leffler
5  * Copyright (c) 1991-1997 Silicon Graphics, Inc.
6  *
7  * Permission to use, copy, modify, distribute, and sell this software and
8  * its documentation for any purpose is hereby granted without fee, provided
9  * that (i) the above copyright notices and this permission notice appear in
10  * all copies of the software and related documentation, and (ii) the names of
11  * Sam Leffler and Silicon Graphics may not be used in any advertising or
12  * publicity relating to the software without the specific, prior written
13  * permission of Sam Leffler and Silicon Graphics.
14  *
15  * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
16  * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
17  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
18  *
19  * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
20  * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
21  * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
22  * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
23  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24  * OF THIS SOFTWARE.
25  */
26 
27 /*
28  * TIFF Library.
29  *
30  * "Null" Compression Algorithm Support.
31  */
32 #include "tiffiop.h"
33 
34 /*
35  * Encode a hunk of pixels.
36  */
37 static int
38 DumpModeEncode(TIFF* tif, tidata_t pp, tsize_t cc, tsample_t s)
39 {
40  (void) s;
41  while (cc > 0) {
42  tsize_t n;
43 
44  n = cc;
45  if (tif->tif_rawcc + n > tif->tif_rawdatasize)
46  n = tif->tif_rawdatasize - tif->tif_rawcc;
47 
48  assert( n > 0 );
49 
50  /*
51  * Avoid copy if client has setup raw
52  * data buffer to avoid extra copy.
53  */
54  if (tif->tif_rawcp != pp)
55  _TIFFmemcpy(tif->tif_rawcp, pp, n);
56  tif->tif_rawcp += n;
57  tif->tif_rawcc += n;
58  pp += n;
59  cc -= n;
60  if (tif->tif_rawcc >= tif->tif_rawdatasize &&
61  !TIFFFlushData1(tif))
62  return (-1);
63  }
64  return (1);
65 }
66 
67 /*
68  * Decode a hunk of pixels.
69  */
70 static int
71 DumpModeDecode(TIFF* tif, tidata_t buf, tsize_t cc, tsample_t s)
72 {
73  (void) s;
74  if (tif->tif_rawcc < cc) {
76  "DumpModeDecode: Not enough data for scanline %d",
77  tif->tif_row);
78  return (0);
79  }
80  /*
81  * Avoid copy if client has setup raw
82  * data buffer to avoid extra copy.
83  */
84  if (tif->tif_rawcp != buf)
85  _TIFFmemcpy(buf, tif->tif_rawcp, cc);
86  tif->tif_rawcp += cc;
87  tif->tif_rawcc -= cc;
88  return (1);
89 }
90 
91 /*
92  * Seek forwards nrows in the current strip.
93  */
94 static int
95 DumpModeSeek(TIFF* tif, uint32 nrows)
96 {
97  tif->tif_rawcp += nrows * tif->tif_scanlinesize;
98  tif->tif_rawcc -= nrows * tif->tif_scanlinesize;
99  return (1);
100 }
101 
102 /*
103  * Initialize dump mode.
104  */
105 int
106 TIFFInitDumpMode(TIFF* tif, int scheme)
107 {
108  (void) scheme;
109  tif->tif_decoderow = DumpModeDecode;
110  tif->tif_decodestrip = DumpModeDecode;
111  tif->tif_decodetile = DumpModeDecode;
112  tif->tif_encoderow = DumpModeEncode;
113  tif->tif_encodestrip = DumpModeEncode;
114  tif->tif_encodetile = DumpModeEncode;
115  tif->tif_seek = DumpModeSeek;
116  return (1);
117 }
int32 tsize_t
Definition: tiffio.h:66
uint16 tsample_t
Definition: tiffio.h:63
TIFFCodeMethod tif_decoderow
Definition: tiffiop.h:146
TIFFCodeMethod tif_encodestrip
Definition: tiffiop.h:149
TIFFCodeMethod tif_encoderow
Definition: tiffiop.h:147
thandle_t tif_clientdata
Definition: tiffiop.h:171
typedef void(APIENTRY *GLDEBUGPROCARB)(GLenum source
char * tif_name
Definition: tiffiop.h:96
Definition: tiffiop.h:95
void _TIFFmemcpy(tdata_t d, const tdata_t s, tsize_t c)
Definition: tif_acorn.c:485
GLenum GLuint GLenum GLsizei const GLchar * buf
tidata_t tif_rawcp
Definition: tiffiop.h:163
TIFFCodeMethod tif_decodestrip
Definition: tiffiop.h:148
TIFFCodeMethod tif_encodetile
Definition: tiffiop.h:151
TIFFSeekMethod tif_seek
Definition: tiffiop.h:153
GLdouble n
int nrows
Definition: png.h:1614
void TIFFErrorExt(thandle_t fd, const char *module, const char *fmt,...)
Definition: tif_error.c:63
tsize_t tif_rawdatasize
Definition: tiffiop.h:162
tsize_t tif_rawcc
Definition: tiffiop.h:164
TIFFCodeMethod tif_decodetile
Definition: tiffiop.h:150
unsigned long uint32
Definition: md5.h:41
tidataval_t * tidata_t
Definition: tiffiop.h:84
int TIFFInitDumpMode(TIFF *tif, int scheme)
Definition: tif_dumpmode.c:106
uint32 tif_row
Definition: tiffiop.h:126
tsize_t tif_scanlinesize
Definition: tiffiop.h:159
GLdouble s
int TIFFFlushData1(TIFF *tif)
Definition: tif_write.c:696