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More Java API cleanup

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git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@519 632fc199-4ca6-4c93-a231-07263d6284db
This commit is contained in:
DRC
2011-03-16 00:02:53 +00:00
parent 92549de2c2
commit 2c74e5124d
13 changed files with 391 additions and 379 deletions
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83
java/org/libjpegturbo/turbojpeg/TJ.java
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@@ -84,7 +84,8 @@ final public class TJ {
* Returns the MCU block width for the given level of chrominance
* subsampling.
*
* @param subsamp the level of chrominance subsampling
* @param subsamp the level of chrominance subsampling (one of
* <code>SAMP_*</code>)
*
* @return the MCU block width for the given level of chrominance subsampling
*/
@@ -103,7 +104,8 @@ final public class TJ {
* Returns the MCU block height for the given level of chrominance
* subsampling.
*
* @param subsamp the level of chrominance subsampling
* @param subsamp the level of chrominance subsampling (one of
* <code>SAMP_*</code>)
*
* @return the MCU block height for the given level of chrominance
* subsampling
@@ -167,8 +169,10 @@ final public class TJ {
/**
* Returns the pixel size (in bytes) for the given pixel format.
* @param pixelFormat the pixel format
* Returns the pixel size (in bytes) of the given pixel format.
*
* @param pixelFormat the pixel format (one of <code>PF_*</code>)
*
* @return the pixel size (in bytes) of the given pixel format
*/
public static int getPixelSize(int pixelFormat) throws Exception {
@@ -183,65 +187,68 @@ final public class TJ {
/**
* Returns the red shift for the given pixel format. For instance, if a
* pixel of format <code>TJ.PF_BGRX</code> is stored as an int, then the red
* component will be
* <code>(pixel >> TJ.getRedShift(TJ.PF_BGRX)) & 0xFF</code>.
* 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>.
*
* @param pixelFormat the pixel format
* @param pixelFormat the pixel format (one of <code>PF_*</code>)
*
* @return the red shift for the given pixel format
* @return the red offset for the given pixel format
*/
public static int getRedShift(int pixelFormat) throws Exception {
public static int getRedOffset(int pixelFormat) throws Exception {
if(pixelFormat < 0 || pixelFormat >= NUMPF)
throw new Exception("Invalid pixel format");
return redShift[pixelFormat];
return redOffset[pixelFormat];
}
final private static int redShift[] = {
0, 16, 0, 16, 24, 8, 0
final private static int redOffset[] = {
0, 2, 0, 2, 3, 1, 0
};
/**
* Returns the green shift for the given pixel format. For instance, if a
* pixel of format <code>TJ.PF_BGRX</code> is stored as an int, then the
* green component will be
* <code>(pixel >> TJ.getGreenShift(TJ.PF_BGRX)) & 0xFF</code>.
* 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>.
*
* @param pixelFormat the pixel format
* @param pixelFormat the pixel format (one of <code>PF_*</code>)
*
* @return the green shift for the given pixel format
* @return the green offset for the given pixel format
*/
public static int getGreenShift(int pixelFormat) throws Exception {
public static int getGreenOffset(int pixelFormat) throws Exception {
if(pixelFormat < 0 || pixelFormat >= NUMPF)
throw new Exception("Invalid pixel format");
return greenShift[pixelFormat];
return greenOffset[pixelFormat];
}
final private static int greenShift[] = {
8, 8, 8, 8, 16, 16, 0
final private static int greenOffset[] = {
1, 1, 1, 1, 2, 2, 0
};
/**
* Returns the blue shift for the given pixel format. For instance, if a
* pixel of format <code>TJ.PF_BGRX</code> is stored as an int, then the blue
* component will be
* <code>(pixel >> TJ.getBlueShift(TJ.PF_BGRX)) & 0xFF</code>.
* 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>.
*
* @param pixelFormat the pixel format
* @param pixelFormat the pixel format (one of <code>PF_*</code>)
*
* @return the blue shift for the given pixel format
* @return the blue offset for the given pixel format
*/
public static int getBlueShift(int pixelFormat) throws Exception {
public static int getBlueOffset(int pixelFormat) throws Exception {
if(pixelFormat < 0 || pixelFormat >= NUMPF)
throw new Exception("Invalid pixel format");
return blueShift[pixelFormat];
return blueOffset[pixelFormat];
}
final private static int blueShift[] = {
16, 0, 16, 0, 8, 24, 0
final private static int blueOffset[] = {
2, 0, 2, 0, 1, 3, 0
};
@@ -292,8 +299,8 @@ final public class TJ {
throws Exception;
/**
* Returns the size of the buffer required to hold a YUV planar image with
* the given width, height, and level of chrominance subsampling.
* 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.
*
* @param width the width (in pixels) of the YUV image
*
@@ -302,8 +309,8 @@ final public class TJ {
* @param subsamp the level of chrominance subsampling used in the YUV
* image
*
* @return the size of the buffer required to hold a YUV planar image with
* the given width, height, and level of chrominance subsampling
* @return the size of the buffer (in bytes) required to hold a YUV planar
* image with the given width, height, and level of chrominance subsampling
*/
public native static int bufSizeYUV(int width, int height,
int subsamp)