kopia lustrzana https://gitlab.com/sane-project/backends
145 wiersze
5.1 KiB
Java
145 wiersze
5.1 KiB
Java
![]() |
/* 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);
|
||
|
}
|