/* * TWAIN Plug-in * Copyright (C) 1999 Craig Setera * Craig Setera * 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 . * * * 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);