4 * Copyright (c) 1988-1997 Sam Leffler
5 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
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.
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.
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
30 * "Null" Compression Algorithm Support.
35 * Encode a hunk of pixels.
37 static int LINKAGEMODE
38 DumpModeEncode(TIFF
* tif
, tidata_t pp
, tsize_t cc
, tsample_t s
)
45 if (tif
->tif_rawcc
+ n
> tif
->tif_rawdatasize
)
46 n
= tif
->tif_rawdatasize
- tif
->tif_rawcc
;
48 * Avoid copy if client has setup raw
49 * data buffer to avoid extra copy.
51 if (tif
->tif_rawcp
!= pp
)
52 _TIFFmemcpy(tif
->tif_rawcp
, pp
, n
);
57 if (tif
->tif_rawcc
>= tif
->tif_rawdatasize
&&
65 * Decode a hunk of pixels.
67 static int LINKAGEMODE
68 DumpModeDecode(TIFF
* tif
, tidata_t buf
, tsize_t cc
, tsample_t s
)
71 if (tif
->tif_rawcc
< cc
) {
72 TIFFError(tif
->tif_name
,
73 "DumpModeDecode: Not enough data for scanline %d",
78 * Avoid copy if client has setup raw
79 * data buffer to avoid extra copy.
81 if (tif
->tif_rawcp
!= buf
)
82 _TIFFmemcpy(buf
, tif
->tif_rawcp
, cc
);
89 * Seek forwards nrows in the current strip.
91 static int LINKAGEMODE
92 DumpModeSeek(TIFF
* tif
, uint32 nrows
)
94 tif
->tif_rawcp
+= nrows
* tif
->tif_scanlinesize
;
95 tif
->tif_rawcc
-= nrows
* tif
->tif_scanlinesize
;
100 * Initialize dump mode.
103 TIFFInitDumpMode(TIFF
* tif
, int scheme
)
106 tif
->tif_decoderow
= DumpModeDecode
;
107 tif
->tif_decodestrip
= DumpModeDecode
;
108 tif
->tif_decodetile
= DumpModeDecode
;
109 tif
->tif_encoderow
= DumpModeEncode
;
110 tif
->tif_encodestrip
= DumpModeEncode
;
111 tif
->tif_encodetile
= DumpModeEncode
;
112 tif
->tif_seek
= DumpModeSeek
;