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| TJ |
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| <H2> |
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| org.libjpegturbo.turbojpeg</FONT> |
| <BR> |
| Class TJ</H2> |
| <PRE> |
| java.lang.Object |
| <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>org.libjpegturbo.turbojpeg.TJ</B> |
| </PRE> |
| <HR> |
| <DL> |
| <DT><PRE>public final class <B>TJ</B><DT>extends java.lang.Object</DL> |
| </PRE> |
| |
| <P> |
| TurboJPEG utility class (cannot be instantiated) |
| <P> |
| |
| <P> |
| <HR> |
| |
| <P> |
| <!-- =========== FIELD SUMMARY =========== --> |
| |
| <A NAME="field_summary"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
| <B>Field Summary</B></FONT></TH> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#FLAG_ACCURATEDCT">FLAG_ACCURATEDCT</A></B></CODE> |
| |
| <BR> |
| Use the most accurate DCT/IDCT algorithm available in the underlying |
| codec.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#FLAG_BOTTOMUP">FLAG_BOTTOMUP</A></B></CODE> |
| |
| <BR> |
| The uncompressed source/destination image is stored in bottom-up (Windows, |
| OpenGL) order, not top-down (X11) order.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#FLAG_FASTDCT">FLAG_FASTDCT</A></B></CODE> |
| |
| <BR> |
| Use the fastest DCT/IDCT algorithm available in the underlying codec.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#FLAG_FASTUPSAMPLE">FLAG_FASTUPSAMPLE</A></B></CODE> |
| |
| <BR> |
| When decompressing an image that was compressed using chrominance |
| subsampling, use the fastest chrominance upsampling algorithm available in |
| the underlying codec.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#FLAG_FORCEMMX">FLAG_FORCEMMX</A></B></CODE> |
| |
| <BR> |
| Turn off CPU auto-detection and force TurboJPEG to use MMX code |
| (if the underlying codec supports it.)</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#FLAG_FORCESSE">FLAG_FORCESSE</A></B></CODE> |
| |
| <BR> |
| Turn off CPU auto-detection and force TurboJPEG to use SSE code |
| (if the underlying codec supports it.)</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#FLAG_FORCESSE2">FLAG_FORCESSE2</A></B></CODE> |
| |
| <BR> |
| Turn off CPU auto-detection and force TurboJPEG to use SSE2 code |
| (if the underlying codec supports it.)</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#FLAG_FORCESSE3">FLAG_FORCESSE3</A></B></CODE> |
| |
| <BR> |
| Turn off CPU auto-detection and force TurboJPEG to use SSE3 code |
| (if the underlying codec supports it.)</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#NUMPF">NUMPF</A></B></CODE> |
| |
| <BR> |
| The number of pixel formats</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#NUMSAMP">NUMSAMP</A></B></CODE> |
| |
| <BR> |
| The number of chrominance subsampling options</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_ABGR">PF_ABGR</A></B></CODE> |
| |
| <BR> |
| ABGR pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_ARGB">PF_ARGB</A></B></CODE> |
| |
| <BR> |
| ARGB pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_BGR">PF_BGR</A></B></CODE> |
| |
| <BR> |
| BGR pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_BGRA">PF_BGRA</A></B></CODE> |
| |
| <BR> |
| BGRA pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_BGRX">PF_BGRX</A></B></CODE> |
| |
| <BR> |
| BGRX pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_GRAY">PF_GRAY</A></B></CODE> |
| |
| <BR> |
| Grayscale pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_RGB">PF_RGB</A></B></CODE> |
| |
| <BR> |
| RGB pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_RGBA">PF_RGBA</A></B></CODE> |
| |
| <BR> |
| RGBA pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_RGBX">PF_RGBX</A></B></CODE> |
| |
| <BR> |
| RGBX pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_XBGR">PF_XBGR</A></B></CODE> |
| |
| <BR> |
| XBGR pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_XRGB">PF_XRGB</A></B></CODE> |
| |
| <BR> |
| XRGB pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#SAMP_420">SAMP_420</A></B></CODE> |
| |
| <BR> |
| 4:2:0 chrominance subsampling.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#SAMP_422">SAMP_422</A></B></CODE> |
| |
| <BR> |
| 4:2:2 chrominance subsampling.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#SAMP_440">SAMP_440</A></B></CODE> |
| |
| <BR> |
| 4:4:0 chrominance subsampling.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#SAMP_444">SAMP_444</A></B></CODE> |
| |
| <BR> |
| 4:4:4 chrominance subsampling (no chrominance subsampling).</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#SAMP_GRAY">SAMP_GRAY</A></B></CODE> |
| |
| <BR> |
| Grayscale.</TD> |
| </TR> |
| </TABLE> |
| |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| |
| <A NAME="constructor_summary"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
| <B>Constructor Summary</B></FONT></TH> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#TJ()">TJ</A></B>()</CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| </TABLE> |
| |
| <!-- ========== METHOD SUMMARY =========== --> |
| |
| <A NAME="method_summary"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
| <B>Method Summary</B></FONT></TH> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#bufSize(int, int, int)">bufSize</A></B>(int width, |
| int height, |
| int jpegSubsamp)</CODE> |
| |
| <BR> |
| Returns the maximum size of the buffer (in bytes) required to hold a JPEG |
| image with the given width, height, and level of chrominance subsampling.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#bufSizeYUV(int, int, int)">bufSizeYUV</A></B>(int width, |
| int height, |
| int subsamp)</CODE> |
| |
| <BR> |
| Returns the size of the buffer (in bytes) required to hold a YUV planar |
| image with the given width, height, and level of chrominance subsampling.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#getBlueOffset(int)">getBlueOffset</A></B>(int pixelFormat)</CODE> |
| |
| <BR> |
| For the given pixel format, returns the number of bytes that the blue |
| component is offset from the start of the pixel.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#getGreenOffset(int)">getGreenOffset</A></B>(int pixelFormat)</CODE> |
| |
| <BR> |
| For the given pixel format, returns the number of bytes that the green |
| component is offset from the start of the pixel.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#getMCUHeight(int)">getMCUHeight</A></B>(int subsamp)</CODE> |
| |
| <BR> |
| Returns the MCU block height for the given level of chrominance |
| subsampling.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#getMCUWidth(int)">getMCUWidth</A></B>(int subsamp)</CODE> |
| |
| <BR> |
| Returns the MCU block width for the given level of chrominance |
| subsampling.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#getPixelSize(int)">getPixelSize</A></B>(int pixelFormat)</CODE> |
| |
| <BR> |
| Returns the pixel size (in bytes) for the given pixel format.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#getRedOffset(int)">getRedOffset</A></B>(int pixelFormat)</CODE> |
| |
| <BR> |
| For the given pixel format, returns the number of bytes that the red |
| component is offset from the start of the pixel.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static <A HREF="../../../org/libjpegturbo/turbojpeg/TJScalingFactor.html" title="class in org.libjpegturbo.turbojpeg">TJScalingFactor</A>[]</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#getScalingFactors()">getScalingFactors</A></B>()</CODE> |
| |
| <BR> |
| Returns a list of fractional scaling factors that the JPEG decompressor in |
| this implementation of TurboJPEG supports.</TD> |
| </TR> |
| </TABLE> |
| <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
| <TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD> |
| </TR> |
| </TABLE> |
| |
| <P> |
| |
| <!-- ============ FIELD DETAIL =========== --> |
| |
| <A NAME="field_detail"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
| <B>Field Detail</B></FONT></TH> |
| </TR> |
| </TABLE> |
| |
| <A NAME="NUMSAMP"><!-- --></A><H3> |
| NUMSAMP</H3> |
| <PRE> |
| public static final int <B>NUMSAMP</B></PRE> |
| <DL> |
| <DD>The number of chrominance subsampling options |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.NUMSAMP">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="SAMP_444"><!-- --></A><H3> |
| SAMP_444</H3> |
| <PRE> |
| public static final int <B>SAMP_444</B></PRE> |
| <DL> |
| <DD>4:4:4 chrominance subsampling (no chrominance subsampling). The JPEG |
| or YUV image will contain one chrominance component for every pixel in the |
| source image. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.SAMP_444">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="SAMP_422"><!-- --></A><H3> |
| SAMP_422</H3> |
| <PRE> |
| public static final int <B>SAMP_422</B></PRE> |
| <DL> |
| <DD>4:2:2 chrominance subsampling. The JPEG or YUV image will contain one |
| chrominance component for every 2x1 block of pixels in the source image. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.SAMP_422">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="SAMP_420"><!-- --></A><H3> |
| SAMP_420</H3> |
| <PRE> |
| public static final int <B>SAMP_420</B></PRE> |
| <DL> |
| <DD>4:2:0 chrominance subsampling. The JPEG or YUV image will contain one |
| chrominance component for every 2x2 block of pixels in the source image. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.SAMP_420">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="SAMP_GRAY"><!-- --></A><H3> |
| SAMP_GRAY</H3> |
| <PRE> |
| public static final int <B>SAMP_GRAY</B></PRE> |
| <DL> |
| <DD>Grayscale. The JPEG or YUV image will contain no chrominance components. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.SAMP_GRAY">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="SAMP_440"><!-- --></A><H3> |
| SAMP_440</H3> |
| <PRE> |
| public static final int <B>SAMP_440</B></PRE> |
| <DL> |
| <DD>4:4:0 chrominance subsampling. The JPEG or YUV image will contain one |
| chrominance component for every 1x2 block of pixels in the source image. |
| Note that 4:4:0 subsampling is not fully accelerated in libjpeg-turbo. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.SAMP_440">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="NUMPF"><!-- --></A><H3> |
| NUMPF</H3> |
| <PRE> |
| public static final int <B>NUMPF</B></PRE> |
| <DL> |
| <DD>The number of pixel formats |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.NUMPF">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="PF_RGB"><!-- --></A><H3> |
| PF_RGB</H3> |
| <PRE> |
| public static final int <B>PF_RGB</B></PRE> |
| <DL> |
| <DD>RGB pixel format. The red, green, and blue components in the image are |
| stored in 3-byte pixels in the order R, G, B from lowest to highest byte |
| address within each pixel. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.PF_RGB">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="PF_BGR"><!-- --></A><H3> |
| PF_BGR</H3> |
| <PRE> |
| public static final int <B>PF_BGR</B></PRE> |
| <DL> |
| <DD>BGR pixel format. The red, green, and blue components in the image are |
| stored in 3-byte pixels in the order B, G, R from lowest to highest byte |
| address within each pixel. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.PF_BGR">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="PF_RGBX"><!-- --></A><H3> |
| PF_RGBX</H3> |
| <PRE> |
| public static final int <B>PF_RGBX</B></PRE> |
| <DL> |
| <DD>RGBX pixel format. The red, green, and blue components in the image are |
| stored in 4-byte pixels in the order R, G, B from lowest to highest byte |
| address within each pixel. The X component is ignored when compressing |
| and undefined when decompressing. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.PF_RGBX">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="PF_BGRX"><!-- --></A><H3> |
| PF_BGRX</H3> |
| <PRE> |
| public static final int <B>PF_BGRX</B></PRE> |
| <DL> |
| <DD>BGRX pixel format. The red, green, and blue components in the image are |
| stored in 4-byte pixels in the order B, G, R from lowest to highest byte |
| address within each pixel. The X component is ignored when compressing |
| and undefined when decompressing. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.PF_BGRX">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="PF_XBGR"><!-- --></A><H3> |
| PF_XBGR</H3> |
| <PRE> |
| public static final int <B>PF_XBGR</B></PRE> |
| <DL> |
| <DD>XBGR pixel format. The red, green, and blue components in the image are |
| stored in 4-byte pixels in the order R, G, B from highest to lowest byte |
| address within each pixel. The X component is ignored when compressing |
| and undefined when decompressing. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.PF_XBGR">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="PF_XRGB"><!-- --></A><H3> |
| PF_XRGB</H3> |
| <PRE> |
| public static final int <B>PF_XRGB</B></PRE> |
| <DL> |
| <DD>XRGB pixel format. The red, green, and blue components in the image are |
| stored in 4-byte pixels in the order B, G, R from highest to lowest byte |
| address within each pixel. The X component is ignored when compressing |
| and undefined when decompressing. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.PF_XRGB">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="PF_GRAY"><!-- --></A><H3> |
| PF_GRAY</H3> |
| <PRE> |
| public static final int <B>PF_GRAY</B></PRE> |
| <DL> |
| <DD>Grayscale pixel format. Each 1-byte pixel represents a luminance |
| (brightness) level from 0 to 255. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.PF_GRAY">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="PF_RGBA"><!-- --></A><H3> |
| PF_RGBA</H3> |
| <PRE> |
| public static final int <B>PF_RGBA</B></PRE> |
| <DL> |
| <DD>RGBA pixel format. This is the same as <A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_RGBX"><CODE>PF_RGBX</CODE></A>, except that when |
| decompressing, the X byte is guaranteed to be 0xFF, which can be |
| interpreted as an opaque alpha channel. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.PF_RGBA">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="PF_BGRA"><!-- --></A><H3> |
| PF_BGRA</H3> |
| <PRE> |
| public static final int <B>PF_BGRA</B></PRE> |
| <DL> |
| <DD>BGRA pixel format. This is the same as <A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_BGRX"><CODE>PF_BGRX</CODE></A>, except that when |
| decompressing, the X byte is guaranteed to be 0xFF, which can be |
| interpreted as an opaque alpha channel. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.PF_BGRA">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="PF_ABGR"><!-- --></A><H3> |
| PF_ABGR</H3> |
| <PRE> |
| public static final int <B>PF_ABGR</B></PRE> |
| <DL> |
| <DD>ABGR pixel format. This is the same as <A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_XBGR"><CODE>PF_XBGR</CODE></A>, except that when |
| decompressing, the X byte is guaranteed to be 0xFF, which can be |
| interpreted as an opaque alpha channel. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.PF_ABGR">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="PF_ARGB"><!-- --></A><H3> |
| PF_ARGB</H3> |
| <PRE> |
| public static final int <B>PF_ARGB</B></PRE> |
| <DL> |
| <DD>ARGB pixel format. This is the same as <A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html#PF_XRGB"><CODE>PF_XRGB</CODE></A>, except that when |
| decompressing, the X byte is guaranteed to be 0xFF, which can be |
| interpreted as an opaque alpha channel. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.PF_ARGB">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="FLAG_BOTTOMUP"><!-- --></A><H3> |
| FLAG_BOTTOMUP</H3> |
| <PRE> |
| public static final int <B>FLAG_BOTTOMUP</B></PRE> |
| <DL> |
| <DD>The uncompressed source/destination image is stored in bottom-up (Windows, |
| OpenGL) order, not top-down (X11) order. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_BOTTOMUP">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="FLAG_FORCEMMX"><!-- --></A><H3> |
| FLAG_FORCEMMX</H3> |
| <PRE> |
| public static final int <B>FLAG_FORCEMMX</B></PRE> |
| <DL> |
| <DD>Turn off CPU auto-detection and force TurboJPEG to use MMX code |
| (if the underlying codec supports it.) |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FORCEMMX">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="FLAG_FORCESSE"><!-- --></A><H3> |
| FLAG_FORCESSE</H3> |
| <PRE> |
| public static final int <B>FLAG_FORCESSE</B></PRE> |
| <DL> |
| <DD>Turn off CPU auto-detection and force TurboJPEG to use SSE code |
| (if the underlying codec supports it.) |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FORCESSE">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="FLAG_FORCESSE2"><!-- --></A><H3> |
| FLAG_FORCESSE2</H3> |
| <PRE> |
| public static final int <B>FLAG_FORCESSE2</B></PRE> |
| <DL> |
| <DD>Turn off CPU auto-detection and force TurboJPEG to use SSE2 code |
| (if the underlying codec supports it.) |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FORCESSE2">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="FLAG_FORCESSE3"><!-- --></A><H3> |
| FLAG_FORCESSE3</H3> |
| <PRE> |
| public static final int <B>FLAG_FORCESSE3</B></PRE> |
| <DL> |
| <DD>Turn off CPU auto-detection and force TurboJPEG to use SSE3 code |
| (if the underlying codec supports it.) |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FORCESSE3">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="FLAG_FASTUPSAMPLE"><!-- --></A><H3> |
| FLAG_FASTUPSAMPLE</H3> |
| <PRE> |
| public static final int <B>FLAG_FASTUPSAMPLE</B></PRE> |
| <DL> |
| <DD>When decompressing an image that was compressed using chrominance |
| subsampling, use the fastest chrominance upsampling algorithm available in |
| the underlying codec. The default is to use smooth upsampling, which |
| creates a smooth transition between neighboring chrominance components in |
| order to reduce upsampling artifacts in the decompressed image. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FASTUPSAMPLE">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="FLAG_FASTDCT"><!-- --></A><H3> |
| FLAG_FASTDCT</H3> |
| <PRE> |
| public static final int <B>FLAG_FASTDCT</B></PRE> |
| <DL> |
| <DD>Use the fastest DCT/IDCT algorithm available in the underlying codec. The |
| default if this flag is not specified is implementation-specific. For |
| example, the implementation of TurboJPEG for libjpeg[-turbo] uses the fast |
| algorithm by default when compressing, because this has been shown to have |
| only a very slight effect on accuracy, but it uses the accurate algorithm |
| when decompressing, because this has been shown to have a larger effect. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_FASTDCT">Constant Field Values</A></DL> |
| </DL> |
| <HR> |
| |
| <A NAME="FLAG_ACCURATEDCT"><!-- --></A><H3> |
| FLAG_ACCURATEDCT</H3> |
| <PRE> |
| public static final int <B>FLAG_ACCURATEDCT</B></PRE> |
| <DL> |
| <DD>Use the most accurate DCT/IDCT algorithm available in the underlying |
| codec. The default if this flag is not specified is |
| implementation-specific. For example, the implementation of TurboJPEG for |
| libjpeg[-turbo] uses the fast algorithm by default when compressing, |
| because this has been shown to have only a very slight effect on accuracy, |
| but it uses the accurate algorithm when decompressing, because this has |
| been shown to have a larger effect. |
| <P> |
| <DL> |
| <DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#org.libjpegturbo.turbojpeg.TJ.FLAG_ACCURATEDCT">Constant Field Values</A></DL> |
| </DL> |
| |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| |
| <A NAME="constructor_detail"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
| <B>Constructor Detail</B></FONT></TH> |
| </TR> |
| </TABLE> |
| |
| <A NAME="TJ()"><!-- --></A><H3> |
| TJ</H3> |
| <PRE> |
| public <B>TJ</B>()</PRE> |
| <DL> |
| </DL> |
| |
| <!-- ============ METHOD DETAIL ========== --> |
| |
| <A NAME="method_detail"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
| <B>Method Detail</B></FONT></TH> |
| </TR> |
| </TABLE> |
| |
| <A NAME="getMCUWidth(int)"><!-- --></A><H3> |
| getMCUWidth</H3> |
| <PRE> |
| public static int <B>getMCUWidth</B>(int subsamp) |
| throws java.lang.Exception</PRE> |
| <DL> |
| <DD>Returns the MCU block width for the given level of chrominance |
| subsampling. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>subsamp</CODE> - the level of chrominance subsampling (one of |
| <code>SAMP_*</code>) |
| <DT><B>Returns:</B><DD>the MCU block width for the given level of chrominance subsampling |
| <DT><B>Throws:</B> |
| <DD><CODE>java.lang.Exception</CODE></DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getMCUHeight(int)"><!-- --></A><H3> |
| getMCUHeight</H3> |
| <PRE> |
| public static int <B>getMCUHeight</B>(int subsamp) |
| throws java.lang.Exception</PRE> |
| <DL> |
| <DD>Returns the MCU block height for the given level of chrominance |
| subsampling. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>subsamp</CODE> - the level of chrominance subsampling (one of |
| <code>SAMP_*</code>) |
| <DT><B>Returns:</B><DD>the MCU block height for the given level of chrominance |
| subsampling |
| <DT><B>Throws:</B> |
| <DD><CODE>java.lang.Exception</CODE></DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getPixelSize(int)"><!-- --></A><H3> |
| getPixelSize</H3> |
| <PRE> |
| public static int <B>getPixelSize</B>(int pixelFormat) |
| throws java.lang.Exception</PRE> |
| <DL> |
| <DD>Returns the pixel size (in bytes) for the given pixel format. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>pixelFormat</CODE> - the pixel format (one of <code>PF_*</code>) |
| <DT><B>Returns:</B><DD>the pixel size (in bytes) for the given pixel format |
| <DT><B>Throws:</B> |
| <DD><CODE>java.lang.Exception</CODE></DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getRedOffset(int)"><!-- --></A><H3> |
| getRedOffset</H3> |
| <PRE> |
| public static int <B>getRedOffset</B>(int pixelFormat) |
| throws java.lang.Exception</PRE> |
| <DL> |
| <DD>For the given pixel format, returns the number of bytes that the red |
| component is offset from the start of the pixel. For instance, if a pixel |
| of format <code>TJ.PF_BGRX</code> is stored in <code>char pixel[]</code>, |
| then the red component will be |
| <code>pixel[TJ.getRedOffset(TJ.PF_BGRX)]</code>. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>pixelFormat</CODE> - the pixel format (one of <code>PF_*</code>) |
| <DT><B>Returns:</B><DD>the red offset for the given pixel format |
| <DT><B>Throws:</B> |
| <DD><CODE>java.lang.Exception</CODE></DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getGreenOffset(int)"><!-- --></A><H3> |
| getGreenOffset</H3> |
| <PRE> |
| public static int <B>getGreenOffset</B>(int pixelFormat) |
| throws java.lang.Exception</PRE> |
| <DL> |
| <DD>For the given pixel format, returns the number of bytes that the green |
| component is offset from the start of the pixel. For instance, if a pixel |
| of format <code>TJ.PF_BGRX</code> is stored in <code>char pixel[]</code>, |
| then the green component will be |
| <code>pixel[TJ.getGreenOffset(TJ.PF_BGRX)]</code>. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>pixelFormat</CODE> - the pixel format (one of <code>PF_*</code>) |
| <DT><B>Returns:</B><DD>the green offset for the given pixel format |
| <DT><B>Throws:</B> |
| <DD><CODE>java.lang.Exception</CODE></DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getBlueOffset(int)"><!-- --></A><H3> |
| getBlueOffset</H3> |
| <PRE> |
| public static int <B>getBlueOffset</B>(int pixelFormat) |
| throws java.lang.Exception</PRE> |
| <DL> |
| <DD>For the given pixel format, returns the number of bytes that the blue |
| component is offset from the start of the pixel. For instance, if a pixel |
| of format <code>TJ.PF_BGRX</code> is stored in <code>char pixel[]</code>, |
| then the blue component will be |
| <code>pixel[TJ.getBlueOffset(TJ.PF_BGRX)]</code>. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>pixelFormat</CODE> - the pixel format (one of <code>PF_*</code>) |
| <DT><B>Returns:</B><DD>the blue offset for the given pixel format |
| <DT><B>Throws:</B> |
| <DD><CODE>java.lang.Exception</CODE></DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="bufSize(int, int, int)"><!-- --></A><H3> |
| bufSize</H3> |
| <PRE> |
| public static int <B>bufSize</B>(int width, |
| int height, |
| int jpegSubsamp) |
| throws java.lang.Exception</PRE> |
| <DL> |
| <DD>Returns the maximum size of the buffer (in bytes) required to hold a JPEG |
| image with the given width, height, and level of chrominance subsampling. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>width</CODE> - the width (in pixels) of the JPEG image<DD><CODE>height</CODE> - the height (in pixels) of the JPEG image<DD><CODE>jpegSubsamp</CODE> - the level of chrominance subsampling to be used when |
| generating the JPEG image (one of <A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html" title="class in org.libjpegturbo.turbojpeg"><CODE>TJ.SAMP_*</CODE></A>) |
| <DT><B>Returns:</B><DD>the maximum size of the buffer (in bytes) required to hold a JPEG |
| image with the given width, height, and level of chrominance subsampling |
| <DT><B>Throws:</B> |
| <DD><CODE>java.lang.Exception</CODE></DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="bufSizeYUV(int, int, int)"><!-- --></A><H3> |
| bufSizeYUV</H3> |
| <PRE> |
| public static int <B>bufSizeYUV</B>(int width, |
| int height, |
| int subsamp) |
| throws java.lang.Exception</PRE> |
| <DL> |
| <DD>Returns the size of the buffer (in bytes) required to hold a YUV planar |
| image with the given width, height, and level of chrominance subsampling. |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>width</CODE> - the width (in pixels) of the YUV image<DD><CODE>height</CODE> - the height (in pixels) of the YUV image<DD><CODE>subsamp</CODE> - the level of chrominance subsampling used in the YUV |
| image (one of <A HREF="../../../org/libjpegturbo/turbojpeg/TJ.html" title="class in org.libjpegturbo.turbojpeg"><CODE>TJ.SAMP_*</CODE></A>) |
| <DT><B>Returns:</B><DD>the size of the buffer (in bytes) required to hold a YUV planar |
| image with the given width, height, and level of chrominance subsampling |
| <DT><B>Throws:</B> |
| <DD><CODE>java.lang.Exception</CODE></DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getScalingFactors()"><!-- --></A><H3> |
| getScalingFactors</H3> |
| <PRE> |
| public static <A HREF="../../../org/libjpegturbo/turbojpeg/TJScalingFactor.html" title="class in org.libjpegturbo.turbojpeg">TJScalingFactor</A>[] <B>getScalingFactors</B>() |
| throws java.lang.Exception</PRE> |
| <DL> |
| <DD>Returns a list of fractional scaling factors that the JPEG decompressor in |
| this implementation of TurboJPEG supports. |
| <P> |
| <DD><DL> |
| |
| <DT><B>Returns:</B><DD>a list of fractional scaling factors that the JPEG decompressor in |
| this implementation of TurboJPEG supports |
| <DT><B>Throws:</B> |
| <DD><CODE>java.lang.Exception</CODE></DL> |
| </DD> |
| </DL> |
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