1 : /* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_dumpmode.c,v 1.14 2011-04-02 20:54:09 bfriesen 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 : static int
35 5894 : DumpFixupTags(TIFF* tif)
36 : {
37 : (void) tif;
38 5894 : return (1);
39 : }
40 :
41 : /*
42 : * Encode a hunk of pixels.
43 : */
44 : static int
45 102569 : DumpModeEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s)
46 : {
47 : (void) s;
48 307709 : while (cc > 0) {
49 : tmsize_t n;
50 :
51 102571 : n = cc;
52 102571 : if (tif->tif_rawcc + n > tif->tif_rawdatasize)
53 2 : n = tif->tif_rawdatasize - tif->tif_rawcc;
54 :
55 102571 : assert( n > 0 );
56 :
57 : /*
58 : * Avoid copy if client has setup raw
59 : * data buffer to avoid extra copy.
60 : */
61 102571 : if (tif->tif_rawcp != pp)
62 102571 : _TIFFmemcpy(tif->tif_rawcp, pp, n);
63 102571 : tif->tif_rawcp += n;
64 102571 : tif->tif_rawcc += n;
65 102571 : pp += n;
66 102571 : cc -= n;
67 103582 : if (tif->tif_rawcc >= tif->tif_rawdatasize &&
68 1011 : !TIFFFlushData1(tif))
69 0 : return (-1);
70 : }
71 102569 : return (1);
72 : }
73 :
74 : /*
75 : * Decode a hunk of pixels.
76 : */
77 : static int
78 13502 : DumpModeDecode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s)
79 : {
80 : static const char module[] = "DumpModeDecode";
81 : (void) s;
82 13502 : if (tif->tif_rawcc < cc) {
83 : #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
84 : TIFFErrorExt(tif->tif_clientdata, module,
85 : "Not enough data for scanline %lu, expected a request for at most %I64d bytes, got a request for %I64d bytes",
86 : (unsigned long) tif->tif_row,
87 : (signed __int64) tif->tif_rawcc,
88 : (signed __int64) cc);
89 : #else
90 0 : TIFFErrorExt(tif->tif_clientdata, module,
91 : "Not enough data for scanline %lu, expected a request for at most %lld bytes, got a request for %lld bytes",
92 : (unsigned long) tif->tif_row,
93 : (signed long long) tif->tif_rawcc,
94 : (signed long long) cc);
95 : #endif
96 0 : return (0);
97 : }
98 : /*
99 : * Avoid copy if client has setup raw
100 : * data buffer to avoid extra copy.
101 : */
102 13502 : if (tif->tif_rawcp != buf)
103 13502 : _TIFFmemcpy(buf, tif->tif_rawcp, cc);
104 13502 : tif->tif_rawcp += cc;
105 13502 : tif->tif_rawcc -= cc;
106 13502 : return (1);
107 : }
108 :
109 : /*
110 : * Seek forwards nrows in the current strip.
111 : */
112 : static int
113 0 : DumpModeSeek(TIFF* tif, uint32 nrows)
114 : {
115 0 : tif->tif_rawcp += nrows * tif->tif_scanlinesize;
116 0 : tif->tif_rawcc -= nrows * tif->tif_scanlinesize;
117 0 : return (1);
118 : }
119 :
120 : /*
121 : * Initialize dump mode.
122 : */
123 : int
124 9937 : TIFFInitDumpMode(TIFF* tif, int scheme)
125 : {
126 : (void) scheme;
127 9937 : tif->tif_fixuptags = DumpFixupTags;
128 9937 : tif->tif_decoderow = DumpModeDecode;
129 9937 : tif->tif_decodestrip = DumpModeDecode;
130 9937 : tif->tif_decodetile = DumpModeDecode;
131 9937 : tif->tif_encoderow = DumpModeEncode;
132 9937 : tif->tif_encodestrip = DumpModeEncode;
133 9937 : tif->tif_encodetile = DumpModeEncode;
134 9937 : tif->tif_seek = DumpModeSeek;
135 9937 : return (1);
136 : }
137 : /*
138 : * Local Variables:
139 : * mode: c
140 : * c-basic-offset: 8
141 : * fill-column: 78
142 : * End:
143 : */
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