Implement custom filter callback in Java

git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@707 632fc199-4ca6-4c93-a231-07263d6284db
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DRC
2011-09-20 05:02:19 +00:00
parent 835b76fb65
commit f546711076
39 changed files with 721 additions and 113 deletions

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org.libjpegturbo.turbojpeg</FONT>
<BR>
Interface TJCustomFilter</H2>
<HR>
<DL>
<DT><PRE>public interface <B>TJCustomFilter</B></DL>
</PRE>
<P>
Custom filter callback interface
<P>
<P>
<HR>
<P>
<!-- ========== METHOD SUMMARY =========== -->
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</TR>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html#customFilter(java.nio.ShortBuffer, java.awt.Rectangle, java.awt.Rectangle, int, int, org.libjpegturbo.turbojpeg.TJTransform)">customFilter</A></B>(java.nio.ShortBuffer&nbsp;coeffBuffer,
java.awt.Rectangle&nbsp;bufferRegion,
java.awt.Rectangle&nbsp;planeRegion,
int&nbsp;componentID,
int&nbsp;transformID,
<A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html" title="class in org.libjpegturbo.turbojpeg">TJTransform</A>&nbsp;transform)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A callback function that can be used to modify the DCT coefficients after
they are losslessly transformed but before they are transcoded to a new
JPEG file.</TD>
</TR>
</TABLE>
&nbsp;
<P>
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</TABLE>
<A NAME="customFilter(java.nio.ShortBuffer, java.awt.Rectangle, java.awt.Rectangle, int, int, org.libjpegturbo.turbojpeg.TJTransform)"><!-- --></A><H3>
customFilter</H3>
<PRE>
void <B>customFilter</B>(java.nio.ShortBuffer&nbsp;coeffBuffer,
java.awt.Rectangle&nbsp;bufferRegion,
java.awt.Rectangle&nbsp;planeRegion,
int&nbsp;componentID,
int&nbsp;transformID,
<A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html" title="class in org.libjpegturbo.turbojpeg">TJTransform</A>&nbsp;transform)
throws java.lang.Exception</PRE>
<DL>
<DD>A callback function that can be used to modify the DCT coefficients after
they are losslessly transformed but before they are transcoded to a new
JPEG file. This allows for custom filters or other transformations to be
applied in the frequency domain.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>coeffBuffer</CODE> - a buffer containing transformed DCT coefficients.
(NOTE: this buffer is not guaranteed to be valid once the callback
returns, so applications wishing to hand off the DCT coefficients to
another function or library should make a copy of them within the body of
the callback.)<DD><CODE>bufferRegion</CODE> - rectangle containing the width and height of
<code>coeffBuffer</code> as well as its offset relative to the component
plane. TurboJPEG implementations may choose to split each component plane
into multiple DCT coefficient buffers and call the callback function once
for each buffer.<DD><CODE>planeRegion</CODE> - rectangle containing the width and height of the
component plane to which <code>coeffBuffer</code> belongs<DD><CODE>componentID</CODE> - ID number of the component plane to which
<code>coeffBuffer</code>belongs (Y, Cb, and Cr have, respectively, ID's of
0, 1, and 2 in typical JPEG images.)<DD><CODE>transformID</CODE> - ID number of the transformed image to which
<code>coeffBuffer</code> belongs. This is the same as the index of the
transform in the transforms array that was passed to <A HREF="../../../org/libjpegturbo/turbojpeg/TJTransformer.html#transform(byte[][], org.libjpegturbo.turbojpeg.TJTransform[], int)"><CODE>TJTransformer.transform()</CODE></A>.<DD><CODE>transform</CODE> - a <A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html" title="class in org.libjpegturbo.turbojpeg"><CODE>TJTransform</CODE></A> instance that specifies the
parameters and/or cropping region for this transform
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE></DL>
</DD>
</DL>
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@@ -53,7 +53,7 @@ function windowTitle()
<TR>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
&nbsp;<A HREF="../../../org/libjpegturbo/turbojpeg/TJCompressor.html" title="class in org.libjpegturbo.turbojpeg"><B>PREV CLASS</B></A>&nbsp;
&nbsp;<A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg"><B>PREV CLASS</B></A>&nbsp;
&nbsp;<A HREF="../../../org/libjpegturbo/turbojpeg/TJScalingFactor.html" title="class in org.libjpegturbo.turbojpeg"><B>NEXT CLASS</B></A></FONT></TD>
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@@ -913,7 +913,7 @@ protected void <B>finalize</B>()
<TR>
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<TITLE>
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<TITLE>
TJTransform
</TITLE>
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<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style">
@@ -143,6 +143,14 @@ Lossless transform parameters
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg">TJCustomFilter</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html#cf">cf</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Custom filter instance</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html#NUMOP">NUMOP</A></B></CODE>
@@ -242,6 +250,15 @@ Lossless transform parameters
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html#OPT_NOOUTPUT">OPT_NOOUTPUT</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This option will prevent <A HREF="../../../org/libjpegturbo/turbojpeg/TJTransformer.html#transform(byte[][], org.libjpegturbo.turbojpeg.TJTransform[], int)"><CODE>TJTransformer.transform()</CODE></A> from outputting a JPEG image for this
particular transform.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html#OPT_PERFECT">OPT_PERFECT</A></B></CODE>
<BR>
@@ -300,20 +317,22 @@ Lossless transform parameters
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create a new lossless transform instance.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html#TJTransform(int, int, int, int, int, int)">TJTransform</A></B>(int&nbsp;x,
<TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html#TJTransform(int, int, int, int, int, int, org.libjpegturbo.turbojpeg.TJCustomFilter)">TJTransform</A></B>(int&nbsp;x,
int&nbsp;y,
int&nbsp;w,
int&nbsp;h,
int&nbsp;op,
int&nbsp;options)</CODE>
int&nbsp;options,
<A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg">TJCustomFilter</A>&nbsp;cf)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create a new lossless transform instance with the given parameters.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html#TJTransform(java.awt.Rectangle, int, int)">TJTransform</A></B>(java.awt.Rectangle&nbsp;r,
<TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html#TJTransform(java.awt.Rectangle, int, int, org.libjpegturbo.turbojpeg.TJCustomFilter)">TJTransform</A></B>(java.awt.Rectangle&nbsp;r,
int&nbsp;op,
int&nbsp;options)</CODE>
int&nbsp;options,
<A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg">TJCustomFilter</A>&nbsp;cf)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create a new lossless transform instance with the given parameters.</TD>
@@ -569,6 +588,21 @@ public static final int <B>OPT_GRAY</B></PRE>
</DL>
<HR>
<A NAME="OPT_NOOUTPUT"><!-- --></A><H3>
OPT_NOOUTPUT</H3>
<PRE>
public static final int <B>OPT_NOOUTPUT</B></PRE>
<DL>
<DD>This option will prevent <A HREF="../../../org/libjpegturbo/turbojpeg/TJTransformer.html#transform(byte[][], org.libjpegturbo.turbojpeg.TJTransform[], int)"><CODE>TJTransformer.transform()</CODE></A> from outputting a JPEG image for this
particular transform. This can be used in conjunction with a custom
filter to capture the transformed DCT coefficients without transcoding
them.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJTransform.OPT_NOOUTPUT">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="op"><!-- --></A><H3>
op</H3>
<PRE>
@@ -591,6 +625,18 @@ public int <B>options</B></PRE>
<DL>
</DL>
</DL>
<HR>
<A NAME="cf"><!-- --></A><H3>
cf</H3>
<PRE>
public <A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg">TJCustomFilter</A> <B>cf</B></PRE>
<DL>
<DD>Custom filter instance
<P>
<DL>
</DL>
</DL>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
@@ -612,7 +658,7 @@ public <B>TJTransform</B>()</PRE>
</DL>
<HR>
<A NAME="TJTransform(int, int, int, int, int, int)"><!-- --></A><H3>
<A NAME="TJTransform(int, int, int, int, int, int, org.libjpegturbo.turbojpeg.TJCustomFilter)"><!-- --></A><H3>
TJTransform</H3>
<PRE>
public <B>TJTransform</B>(int&nbsp;x,
@@ -620,7 +666,8 @@ public <B>TJTransform</B>(int&nbsp;x,
int&nbsp;w,
int&nbsp;h,
int&nbsp;op,
int&nbsp;options)
int&nbsp;options,
<A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg">TJCustomFilter</A>&nbsp;cf)
throws java.lang.Exception</PRE>
<DL>
<DD>Create a new lossless transform instance with the given parameters.
@@ -631,27 +678,28 @@ public <B>TJTransform</B>(int&nbsp;x,
divisible by the MCU block height (see <A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#getMCUHeight(int)"><CODE>TJ.getMCUHeight(int)</CODE></A>)<DD><CODE>w</CODE> - the width of the cropping region. Setting this to 0 is the
equivalent of setting it to the width of the source JPEG image - x.<DD><CODE>h</CODE> - the height of the cropping region. Setting this to 0 is the
equivalent of setting it to the height of the source JPEG image - y.<DD><CODE>op</CODE> - one of the transform operations (<code>OP_*</code>)<DD><CODE>options</CODE> - the bitwise OR of one or more of the transform options
(<code>OPT_*</code>)
(<code>OPT_*</code>)<DD><CODE>cf</CODE> - an instance of an object that implements the <A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg"><CODE>TJCustomFilter</CODE></A> interface, or null if no custom filter is needed
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE></DL>
</DL>
<HR>
<A NAME="TJTransform(java.awt.Rectangle, int, int)"><!-- --></A><H3>
<A NAME="TJTransform(java.awt.Rectangle, int, int, org.libjpegturbo.turbojpeg.TJCustomFilter)"><!-- --></A><H3>
TJTransform</H3>
<PRE>
public <B>TJTransform</B>(java.awt.Rectangle&nbsp;r,
int&nbsp;op,
int&nbsp;options)
int&nbsp;options,
<A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg">TJCustomFilter</A>&nbsp;cf)
throws java.lang.Exception</PRE>
<DL>
<DD>Create a new lossless transform instance with the given parameters.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>r</CODE> - a <code>Rectangle</code> instance which specifies the cropping
region. See <A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html#TJTransform(int, int, int, int, int, int)"><CODE>TJTransform(int, int, int, int, int, int)</CODE></A> for more
region. See <A HREF="../../../org/libjpegturbo/turbojpeg/TJTransform.html#TJTransform(int, int, int, int, int, int, org.libjpegturbo.turbojpeg.TJCustomFilter)"><CODE>TJTransform(int, int, int, int, int, int, TJCustomFilter)</CODE></A> for more
detail.<DD><CODE>op</CODE> - one of the transform operations (<code>OP_*</code>)<DD><CODE>options</CODE> - the bitwise OR of one or more of the transform options
(<code>OPT_*</code>)
(<code>OPT_*</code>)<DD><CODE>cf</CODE> - an instance of an object that implements the <A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg"><CODE>TJCustomFilter</CODE></A> interface, or null if no custom filter is needed
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE></DL>
</DL>

View File

@@ -2,12 +2,12 @@
<!--NewPage-->
<HTML>
<HEAD>
<!-- Generated by javadoc (build 1.6.0_26) on Mon Jul 11 21:40:35 CDT 2011 -->
<!-- Generated by javadoc (build 1.6.0_26) on Mon Sep 19 23:46:08 CDT 2011 -->
<TITLE>
TJTransformer
</TITLE>
<META NAME="date" CONTENT="2011-07-11">
<META NAME="date" CONTENT="2011-09-19">
<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style">

View File

@@ -2,12 +2,12 @@
<!--NewPage-->
<HTML>
<HEAD>
<!-- Generated by javadoc (build 1.6.0_26) on Mon Jul 11 21:40:35 CDT 2011 -->
<!-- Generated by javadoc (build 1.6.0_26) on Mon Sep 19 23:46:08 CDT 2011 -->
<TITLE>
org.libjpegturbo.turbojpeg
</TITLE>
<META NAME="date" CONTENT="2011-07-11">
<META NAME="date" CONTENT="2011-09-19">
<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style">
@@ -17,6 +17,17 @@ org.libjpegturbo.turbojpeg
<BODY BGCOLOR="white">
<FONT size="+1" CLASS="FrameTitleFont">
<A HREF="../../../org/libjpegturbo/turbojpeg/package-summary.html" target="classFrame">org.libjpegturbo.turbojpeg</A></FONT>
<TABLE BORDER="0" WIDTH="100%" SUMMARY="">
<TR>
<TD NOWRAP><FONT size="+1" CLASS="FrameHeadingFont">
Interfaces</FONT>&nbsp;
<FONT CLASS="FrameItemFont">
<BR>
<A HREF="TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg" target="classFrame"><I>TJCustomFilter</I></A></FONT></TD>
</TR>
</TABLE>
<TABLE BORDER="0" WIDTH="100%" SUMMARY="">
<TR>
<TD NOWRAP><FONT size="+1" CLASS="FrameHeadingFont">

View File

@@ -2,12 +2,12 @@
<!--NewPage-->
<HTML>
<HEAD>
<!-- Generated by javadoc (build 1.6.0_26) on Mon Jul 11 21:40:35 CDT 2011 -->
<!-- Generated by javadoc (build 1.6.0_26) on Mon Sep 19 23:46:08 CDT 2011 -->
<TITLE>
org.libjpegturbo.turbojpeg
</TITLE>
<META NAME="date" CONTENT="2011-07-11">
<META NAME="date" CONTENT="2011-09-19">
<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style">
@@ -81,6 +81,20 @@ function windowTitle()
Package org.libjpegturbo.turbojpeg
</H2>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Interface Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD WIDTH="15%"><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg">TJCustomFilter</A></B></TD>
<TD>Custom filter callback interface</TD>
</TR>
</TABLE>
&nbsp;
<P>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">

View File

@@ -2,12 +2,12 @@
<!--NewPage-->
<HTML>
<HEAD>
<!-- Generated by javadoc (build 1.6.0_26) on Mon Jul 11 21:40:35 CDT 2011 -->
<!-- Generated by javadoc (build 1.6.0_26) on Mon Sep 19 23:46:08 CDT 2011 -->
<TITLE>
org.libjpegturbo.turbojpeg Class Hierarchy
</TITLE>
<META NAME="date" CONTENT="2011-07-11">
<META NAME="date" CONTENT="2011-09-19">
<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style">
@@ -99,6 +99,11 @@ Class Hierarchy
<LI TYPE="circle">org.libjpegturbo.turbojpeg.<A HREF="../../../org/libjpegturbo/turbojpeg/TJTransformer.html" title="class in org.libjpegturbo.turbojpeg"><B>TJTransformer</B></A></UL>
<LI TYPE="circle">org.libjpegturbo.turbojpeg.<A HREF="../../../org/libjpegturbo/turbojpeg/TJScalingFactor.html" title="class in org.libjpegturbo.turbojpeg"><B>TJScalingFactor</B></A></UL>
</UL>
<H2>
Interface Hierarchy
</H2>
<UL>
<LI TYPE="circle">org.libjpegturbo.turbojpeg.<A HREF="../../../org/libjpegturbo/turbojpeg/TJCustomFilter.html" title="interface in org.libjpegturbo.turbojpeg"><B>TJCustomFilter</B></A></UL>
<HR>