com.pixelmed.dicom

Class CompressedFrameDecoder

java.lang.Object

com.pixelmed.dicom.CompressedFrameDecoder

public class CompressedFrameDecoder
extends Object

The CompressedFrameDecoder class implements decompression of selected frames in various supported Transfer Syntaxes once already extracted from DICOM encapsulated images.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	CompressedFrameDecoder.ByteArrayInputStreamWithOffsetCounterAndOurMethods

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	areDownsampled
protected boolean	areNumberedFromOneByOne
protected boolean	haveAdobe
protected boolean	haveJFIF
protected boolean	haveProcessedMetaDataForFrameRequest

Constructor Summary

Constructors

Constructor and Description
CompressedFrameDecoder(String transferSyntaxUID, byte[][] frames, int bytesPerSample, int width, int height, int samples, ColorSpace colorSpace)
CompressedFrameDecoder(String transferSyntaxUID, byte[][] frames, int bytesPerSample, int width, int height, int samples, ColorSpace colorSpace, boolean photometricInterpretationIsYBR)
CompressedFrameDecoder(String transferSyntaxUID, ByteFrameSource compressedDataFrameSource, int bytesPerSample, int width, int height, int samples, ColorSpace colorSpace)
CompressedFrameDecoder(String transferSyntaxUID, ByteFrameSource compressedDataFrameSource, int bytesPerSample, int width, int height, int samples, ColorSpace colorSpace, boolean photometricInterpretationIsYBR)
CompressedFrameDecoder(String transferSyntaxUID, int bytesPerSample, int width, int height, int samples, ColorSpace colorSpace)
CompressedFrameDecoder(String transferSyntaxUID, int bytesPerSample, int width, int height, int samples, ColorSpace colorSpace, boolean photometricInterpretationIsYBR)

Method Summary

Modifier and Type	Method and Description
static boolean	canDecompress(File file) Returns a whether or not a DICOM file contains pixel data that can be decompressed using this class.
static boolean	canDecompress(String filename) Returns a whether or not a DICOM file contains pixel data that can be decompressed using this class.
void	dispose()
protected void	doCommonConstructorStuff(String transferSyntaxUID, int bytesPerSample, int width, int height, int samples, ColorSpace colorSpace)
protected void	doCommonConstructorStuff(String transferSyntaxUID, int bytesPerSample, int width, int height, int samples, ColorSpace colorSpace, boolean photometricInterpretationIsKnown, boolean photometricInterpretationIsYBR)
boolean	getColorSpaceConvertedToRGBDuringDecompression() Returns a whether or not the color space will be converted to RGB during compression if it was YBR in the first place.
BufferedImage	getDecompressedFrameAsBufferedImage(byte[] frameBytes)
BufferedImage	getDecompressedFrameAsBufferedImage(int f)
BufferedImage	getDecompressedFrameAsBufferedImageUsingImageReader(byte[] frameBytes)
BufferedImage	getDecompressedFrameAsBufferedImageUsingImageReader(int f)
BufferedImage	getDecompressedFrameAsBufferedImageUsingRLE(byte[] frameBytes)
BufferedImage	getDecompressedFrameAsBufferedImageUsingRLE(int f)
static boolean	isPixelMedLosslessJPEGReader(ImageReader reader)
static boolean	isStandardJPEGReader(ImageReader reader)
static void	scanForCodecs()
static ImageReader	selectReaderFromCodecsAvailable(String readerWanted, String transferSyntaxUID, int bytesPerSample)
static ImageReader	selectReaderFromCodecsAvailable(String readerWanted, String transferSyntaxUID, int bytesPerSample, Set<String> blacklistedReaders)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

areDownsampled

protected boolean areDownsampled

areNumberedFromOneByOne

protected boolean areNumberedFromOneByOne

haveAdobe

protected boolean haveAdobe

haveJFIF

protected boolean haveJFIF

haveProcessedMetaDataForFrameRequest

protected boolean haveProcessedMetaDataForFrameRequest

Constructor Detail

CompressedFrameDecoder

public CompressedFrameDecoder(String transferSyntaxUID,
                              byte[][] frames,
                              int bytesPerSample,
                              int width,
                              int height,
                              int samples,
                              ColorSpace colorSpace)
                       throws DicomException

Throws:

DicomException

CompressedFrameDecoder

public CompressedFrameDecoder(String transferSyntaxUID,
                              byte[][] frames,
                              int bytesPerSample,
                              int width,
                              int height,
                              int samples,
                              ColorSpace colorSpace,
                              boolean photometricInterpretationIsYBR)
                       throws DicomException

Throws:

DicomException

CompressedFrameDecoder

public CompressedFrameDecoder(String transferSyntaxUID,
                              ByteFrameSource compressedDataFrameSource,
                              int bytesPerSample,
                              int width,
                              int height,
                              int samples,
                              ColorSpace colorSpace)
                       throws DicomException

Throws:

DicomException

CompressedFrameDecoder

public CompressedFrameDecoder(String transferSyntaxUID,
                              ByteFrameSource compressedDataFrameSource,
                              int bytesPerSample,
                              int width,
                              int height,
                              int samples,
                              ColorSpace colorSpace,
                              boolean photometricInterpretationIsYBR)
                       throws DicomException

Throws:

DicomException

CompressedFrameDecoder

public CompressedFrameDecoder(String transferSyntaxUID,
                              int bytesPerSample,
                              int width,
                              int height,
                              int samples,
                              ColorSpace colorSpace)
                       throws DicomException

Throws:

DicomException

CompressedFrameDecoder

public CompressedFrameDecoder(String transferSyntaxUID,
                              int bytesPerSample,
                              int width,
                              int height,
                              int samples,
                              ColorSpace colorSpace,
                              boolean photometricInterpretationIsYBR)
                       throws DicomException

Throws:

DicomException

Method Detail

canDecompress

public static boolean canDecompress(File file)

Returns a whether or not a DICOM file contains pixel data that can be decompressed using this class.

Parameters:

file - the file

Returns:

true if file can be decompressed using this class

canDecompress

public static boolean canDecompress(String filename)

Returns a whether or not a DICOM file contains pixel data that can be decompressed using this class.

Parameters:

filename - the file

Returns:

true if file can be decompressed using this class

dispose

public void dispose()
             throws Throwable

Throws:

Throwable

doCommonConstructorStuff

protected void doCommonConstructorStuff(String transferSyntaxUID,
                                        int bytesPerSample,
                                        int width,
                                        int height,
                                        int samples,
                                        ColorSpace colorSpace)
                                 throws DicomException

Throws:

DicomException

doCommonConstructorStuff

protected void doCommonConstructorStuff(String transferSyntaxUID,
                                        int bytesPerSample,
                                        int width,
                                        int height,
                                        int samples,
                                        ColorSpace colorSpace,
                                        boolean photometricInterpretationIsKnown,
                                        boolean photometricInterpretationIsYBR)
                                 throws DicomException

Throws:

DicomException

getColorSpaceConvertedToRGBDuringDecompression

public boolean getColorSpaceConvertedToRGBDuringDecompression()

Returns a whether or not the color space will be converted to RGB during compression if it was YBR in the first place.

Returns:

true if RGB after compression

getDecompressedFrameAsBufferedImage

public BufferedImage getDecompressedFrameAsBufferedImage(byte[] frameBytes)
                                                  throws DicomException,
                                                         IOException

Throws:

DicomException

IOException

getDecompressedFrameAsBufferedImage

public BufferedImage getDecompressedFrameAsBufferedImage(int f)
                                                  throws DicomException,
                                                         IOException

Throws:

DicomException

IOException

getDecompressedFrameAsBufferedImageUsingImageReader

public BufferedImage getDecompressedFrameAsBufferedImageUsingImageReader(byte[] frameBytes)
                                                                  throws DicomException,
                                                                         IOException

Throws:

DicomException

IOException

getDecompressedFrameAsBufferedImageUsingImageReader

public BufferedImage getDecompressedFrameAsBufferedImageUsingImageReader(int f)
                                                                  throws DicomException,
                                                                         IOException

Throws:

DicomException

IOException

getDecompressedFrameAsBufferedImageUsingRLE

public BufferedImage getDecompressedFrameAsBufferedImageUsingRLE(byte[] frameBytes)
                                                          throws DicomException,
                                                                 IOException

Throws:

DicomException

IOException

getDecompressedFrameAsBufferedImageUsingRLE

public BufferedImage getDecompressedFrameAsBufferedImageUsingRLE(int f)
                                                          throws DicomException,
                                                                 IOException

Throws:

DicomException

IOException

isPixelMedLosslessJPEGReader

public static boolean isPixelMedLosslessJPEGReader(ImageReader reader)

isStandardJPEGReader

public static boolean isStandardJPEGReader(ImageReader reader)

scanForCodecs

public static void scanForCodecs()

selectReaderFromCodecsAvailable

public static ImageReader selectReaderFromCodecsAvailable(String readerWanted,
                                                          String transferSyntaxUID,
                                                          int bytesPerSample)
                                                   throws DicomException

Throws:

DicomException

selectReaderFromCodecsAvailable

public static ImageReader selectReaderFromCodecsAvailable(String readerWanted,
                                                          String transferSyntaxUID,
                                                          int bytesPerSample,
                                                          Set<String> blacklistedReaders)
                                                   throws DicomException

Throws:

DicomException