javax.imageio.plugins.jpeg
Class JPEGQTable
The JPEGQTable class represents a quantization table that can be
used to encode or decode a JPEG stream. The standard JPEG
luminance and chrominance quantization tables are provided as
static fields. Table entries are stored in natural order, not
zig-zag order.
JPEGQTable(int[] table)- Construct a new JPEG quantization table.
|
JPEGQTable | getScaledInstance(float scaleFactor, boolean forceBaseline)- Retrieve a copy of this JPEG quantization table with every value
scaled by the given scale factor, and clamped from 1 to 255
baseline or from 1 to 32767 otherwise.
|
int[] | getTable()- Retrieve a copy of the quantization values for this table.
|
String | toString()- Create a string representing this JPEG quantization table.
|
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
K1Div2Luminance
public static final JPEGQTable K1Div2Luminance
The standard JPEG luminance quantization table, scaled by
one-half. Values are stored in natural order.
K1Luminance
public static final JPEGQTable K1Luminance
The standard JPEG luminance quantization table. Values are
stored in natural order.
K2Chrominance
public static final JPEGQTable K2Chrominance
The standard JPEG chrominance quantization table. Values are
stored in natural order.
K2Div2Chrominance
public static final JPEGQTable K2Div2Chrominance
The standard JPEG chrominance quantization table, scaled by
one-half. Values are stored in natural order.
JPEGQTable
public JPEGQTable(int[] table)
Construct a new JPEG quantization table. A copy is created of
the table argument.
table - the 64-element value table, stored in natural order
getScaledInstance
public JPEGQTable getScaledInstance(float scaleFactor,
boolean forceBaseline) Retrieve a copy of this JPEG quantization table with every value
scaled by the given scale factor, and clamped from 1 to 255
baseline or from 1 to 32767 otherwise.
scaleFactor - the factor by which to scale this tableforceBaseline - clamp scaled values to a maximum of 255 if
true, 32767 if false
- a new scaled JPEG quantization table
getTable
public int[] getTable()
Retrieve a copy of the quantization values for this table.
- a copy of the quantization value array
JPEGQTable.java --
Copyright (C) 2006 Free Software Foundation, Inc.
This file is part of GNU Classpath.
GNU Classpath 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, or (at your option)
any later version.
GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.
Linking this library statically or dynamically with other modules is
making a combined work based on this library. Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module. An independent module is a module which is not derived from
or based on this library. If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so. If you do not wish to do so, delete this
exception statement from your version.