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Diffstat (limited to 'japi/Sane.java')
| -rw-r--r-- | japi/Sane.java | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/japi/Sane.java b/japi/Sane.java new file mode 100644 index 0000000..85600e7 --- /dev/null +++ b/japi/Sane.java @@ -0,0 +1,144 @@ +/* sane - Scanner Access Now Easy. + Copyright (C) 1997 Jeffrey S. Freedman + This file is part of the SANE package. + + 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 2 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, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, + MA 02111-1307, USA. + + As a special exception, the authors of SANE give permission for + additional uses of the libraries contained in this release of SANE. + + The exception is that, if you link a SANE library with other files + to produce an executable, this does not by itself cause the + resulting executable to be covered by the GNU General Public + License. Your use of that executable is in no way restricted on + account of linking the SANE library code into it. + + This exception does not, however, invalidate any other reasons why + the executable file might be covered by the GNU General Public + License. + + If you submit changes to SANE to the maintainers to be included in + a subsequent release, you agree by submitting the changes that + those changes may be distributed with this exception intact. + + If you write modifications of your own for SANE, it is your choice + whether to permit this exception to apply to your modifications. + If you do not wish that, delete this exception notice. */ + +// +// Sane.java - Java version of SANE API. +// +// Written: 10/9/97 - JSF +// + +public class Sane +{ + // + // Public constants: + // +public static int FIXED_SCALE_SHIFT = 16; + // + // Sane status values: + // +public static int STATUS_GOOD = 0; // everything A-OK +public static int STATUS_UNSUPPORTED = 1;// operation is not supported +public static int STATUS_CANCELLED = 2; // operation was cancelled +public static int STATUS_DEVICE_BUSY = 3;// device is busy; try again later +public static int STATUS_INVAL = 4; // data is invalid (includes no + // dev at open) +public static int STATUS_EOF = 5; // no more data available (end-of-file) +public static int STATUS_JAMMED = 6; // document feeder jammed +public static int STATUS_NO_DOCS = 7; // document feeder out of documents +public static int STATUS_COVER_OPEN = 8;// scanner cover is open +public static int STATUS_IO_ERROR = 9; // error during device I/O +public static int STATUS_NO_MEM = 10; // out of memory + // access to resource has been denied +public static int STATUS_ACCESS_DENIED = 11; + // + // Initialize when class is loaded. + // +static { + System.loadLibrary("sanej"); + } + // + // Private methods: + // + // Get list of devices. +private native int getDevicesNative( + SaneDevice[] deviceList, boolean localOnly); + // Get option descriptor. +private native void getOptionNative(int handle, int option, SaneOption opt); + // + // Public methods: + // +public Sane() + { } +public int fix(double v) + { return (int) ((v) * (1 << FIXED_SCALE_SHIFT)); } +public double unfix(int v) + { return (double)(v) / (1 << FIXED_SCALE_SHIFT); } +public int versionMajor(int code) + { return ((code) >> 24) & 0xff; } +public int versionMinor(int code) + { return ((code) >> 16) & 0xff; } +public int versionBuild(int code) + { return ((code) >> 0) & 0xffff; } + // + // SANE interface. + // + // Initialize, and return STATUS_ +public native int init(int[] versionCode); +public native void exit(); // All done. + // Get list of devices. +public int getDevices(SaneDevice[] deviceList, boolean localOnly) + { + // Create objects first. + for (int i = 0; i < deviceList.length - 1; i++) + deviceList[i] = new SaneDevice(); + return getDevicesNative(deviceList, localOnly); + } + // Open a device. +public native int open(String deviceName, int[] handle); + // Close a device. +public native void close(int handle); + // Get option descriptor. +public SaneOption getOptionDescriptor(int handle, int option) + { + SaneOption opt = new SaneOption(); + opt.name = null; + getOptionNative(handle, option, opt); + if (opt.name == null) // Error? + return (null); + return (opt); + } + // Get each type of option: +public native int getControlOption(int handle, int option, int [] value, + int [] info); +public native int getControlOption(int handle, int option, byte [] value, + int [] info); + // Set each type of option (SET_VALUE or + // SET_AUTO): +public native int setControlOption(int handle, int option, + int action, int value, int [] info); +public native int setControlOption(int handle, int option, + int action, String value, int [] info); +public native int getParameters(int handle, SaneParameters params); +public native int start(int handle); +public native int read(int handle, byte [] data, + int maxLength, int [] length); +public native void cancel(int handle); +public native String strstatus(int status); +} |