ryan/mozjpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Slight refactor to put ScalingFactor into its own class (mainly because the $ in the class name was wreaking havoc on the build scripts, but also to add a few convenience methods to it) and to create a separate loader class so we can provide a .jar file with the MinGW distribution that loads the correct DLL

Browse Source
This commit is contained in:
DRC
2011-04-02 02:09:03 +00:00
parent d6d704d30d
commit 90a42bb4d2
30 changed files with 504 additions and 243 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
java/doc/org/libjpegturbo/turbojpeg/TJDecompressor.html
View File

@@ -2,12 +2,12 @@
<!--NewPage-->
<HTML>
<HEAD>
<!-- Generated by javadoc (build 1.6.0_22) on Tue Mar 15 18:44:49 CDT 2011 -->
<!-- Generated by javadoc (build 1.6.0_24) on Fri Apr 01 20:49:05 CDT 2011 -->
<TITLE>
TJDecompressor
</TITLE>
<META NAME="date" CONTENT="2011-03-15">
<META NAME="date" CONTENT="2011-04-01">
<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style">
@@ -54,7 +54,7 @@ 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/TJTransform.html" title="class in org.libjpegturbo.turbojpeg"><B>NEXT CLASS</B></A></FONT></TD>
&nbsp;<A HREF="../../../org/libjpegturbo/turbojpeg/TJScalingFactor.html" title="class in org.libjpegturbo.turbojpeg"><B>NEXT CLASS</B></A></FONT></TD>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
<A HREF="../../../index.html?org/libjpegturbo/turbojpeg/TJDecompressor.html" target="_top"><B>FRAMES</B></A> &nbsp;
&nbsp;<A HREF="TJDecompressor.html" target="_top"><B>NO FRAMES</B></A> &nbsp;
@@ -705,8 +705,9 @@ public void <B>decompress</B>(byte[]&nbsp;dstBuf,
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>dstBuf</CODE> - buffer which will receive the decompressed image. This
buffer should normally be <code>pitch * scaledHeight</code> bytes in size,
where <code>scaledHeight = ceil(jpegHeight * scalingFactor)</code>, and
the supported scaling factors can be determined by calling <A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#getScalingFactors()"><CODE>TJ.getScalingFactors()</CODE></A>.<DD><CODE>desiredWidth</CODE> - desired width (in pixels) of the decompressed image.
where <code>scaledHeight</code> can be determined by calling <code>
scalingFactor.<A HREF="../../../org/libjpegturbo/turbojpeg/TJScalingFactor.html#getScaled(int)"><CODE>getScaled</CODE></A>(jpegHeight)
</code> with one of the scaling factors returned from <A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#getScalingFactors()"><CODE>TJ.getScalingFactors()</CODE></A> or by calling <A HREF="../../../org/libjpegturbo/turbojpeg/TJDecompressor.html#getScaledHeight(int, int)"><CODE>getScaledHeight(int, int)</CODE></A>.<DD><CODE>desiredWidth</CODE> - desired width (in pixels) of the decompressed image.
If the desired image dimensions are smaller than the dimensions of the
JPEG image being decompressed, then TurboJPEG will use scaling in the JPEG
decompressor to generate the largest possible image that will fit within
@@ -716,9 +717,11 @@ public void <B>decompress</B>(byte[]&nbsp;dstBuf,
should be set to <code>scaledWidth * TJ.pixelSize(pixelFormat)</code> if
the decompressed image is unpadded, but you can use this to, for instance,
pad each line of the decompressed image to a 4-byte boundary. NOTE:
<code>scaledWidth = ceil(jpegWidth * scalingFactor)</code>. Setting this
parameter to 0 is the equivalent of setting it to
<code>scaledWidth * TJ.pixelSize(pixelFormat)</code>.<DD><CODE>desiredHeight</CODE> - desired height (in pixels) of the decompressed image.
<code>scaledWidth</code> can be determined by calling <code>
scalingFactor.<A HREF="../../../org/libjpegturbo/turbojpeg/TJScalingFactor.html#getScaled(int)"><CODE>getScaled</CODE></A>(jpegWidth)
</code> or by calling <A HREF="../../../org/libjpegturbo/turbojpeg/TJDecompressor.html#getScaledWidth(int, int)"><CODE>getScaledWidth(int, int)</CODE></A>. Setting this parameter to
0 is the equivalent of setting it to <code>scaledWidth *
TJ.pixelSize(pixelFormat)</code>.<DD><CODE>desiredHeight</CODE> - desired height (in pixels) of the decompressed image.
If the desired image dimensions are smaller than the dimensions of the
JPEG image being decompressed, then TurboJPEG will use scaling in the JPEG
decompressor to generate the largest possible image that will fit within
@@ -911,7 +914,7 @@ protected void <B>finalize</B>()
<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/TJTransform.html" title="class in org.libjpegturbo.turbojpeg"><B>NEXT CLASS</B></A></FONT></TD>
&nbsp;<A HREF="../../../org/libjpegturbo/turbojpeg/TJScalingFactor.html" title="class in org.libjpegturbo.turbojpeg"><B>NEXT CLASS</B></A></FONT></TD>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
<A HREF="../../../index.html?org/libjpegturbo/turbojpeg/TJDecompressor.html" target="_top"><B>FRAMES</B></A> &nbsp;
&nbsp;<A HREF="TJDecompressor.html" target="_top"><B>NO FRAMES</B></A> &nbsp;