1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
* TWAIN Plug-in
* Copyright (C) 1999 Craig Setera
* Craig Setera <setera@home.com>
* 03/31/1999
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*
* Based on (at least) the following plug-ins:
* Screenshot
* GIF
* Randomize
*
* Any suggestions, bug-reports or patches are welcome.
*
* This plug-in interfaces to the TWAIN support library in order
* to capture images from TWAIN devices directly into GIMP images.
* The plug-in is capable of acquiring the following type of
* images:
* - B/W (1 bit images translated to grayscale B/W)
* - Grayscale up to 16 bits per pixel
* - RGB up to 16 bits per sample (24, 30, 36, etc.)
* - Paletted images (both Gray and RGB)
*
* Prerequisites:
* This plug-in will not compile on anything other than a Win32
* platform. Although the TWAIN documentation implies that there
* is TWAIN support available on Macintosh, I neither have a
* Macintosh nor the interest in porting this. If anyone else
* has an interest, consult www.twain.org for more information on
* interfacing to TWAIN.
*
* Known problems:
* - Multiple image transfers will hang the plug-in. The current
* configuration compiles with a maximum of single image transfers.
*/
/*
* Revision history
* (02/07/99) v0.1 First working version (internal)
* (02/09/99) v0.2 First release to anyone other than myself
* (02/15/99) v0.3 Added image dump and read support for debugging
* (03/31/99) v0.5 Added support for multi-byte samples and paletted
* images.
*/
#include "tw_platform.h"
#include "tw_func.h"
void dumpPreTransferCallback(void *clientData);
int dumpBeginTransferCallback(pTW_IMAGEINFO imageInfo, void *clientData);
int dumpDataTransferCallback(pTW_IMAGEINFO imageInfo,
pTW_IMAGEMEMXFER imageMemXfer,
void *clientData);
int dumpEndTransferCallback(int completionState, int pendingCount, void *clientData);
void dumpPostTransferCallback(int pendingCount, void *clientData);
void readDumpedImage(pTW_SESSION twSession);
|