public class APNGReader extends FormatReader
Modifier and Type | Class and Description |
---|---|
(package private) class |
APNGReader.PNGBlock |
(package private) class |
APNGReader.PNGInputStream
InputStream implementation that stitches together IDAT blocks into
a seamless zlib stream.
|
Modifier and Type | Field and Description |
---|---|
private static int |
AVERAGE |
private Vector<APNGReader.PNGBlock> |
blocks |
private int |
compression |
private Vector<int[]> |
frameCoordinates |
private static int |
GRAY_ALPHA |
private static int |
GRAYSCALE
Color types.
|
private int |
idatCount |
private static int |
INDEXED |
private int |
interlace |
private byte[] |
lastImage |
private int |
lastImageIndex |
private int |
lastImageRow |
private byte[][] |
lut |
private static int |
NONE
Filter types.
|
private static int |
PAETH |
private static int[] |
PASS_HEIGHTS |
private static int[] |
PASS_WIDTHS
Interlacing pass dimensions.
|
private static int |
SUB |
private static int |
TRUE_ALPHA |
private static int |
TRUE_COLOR |
private static int |
UP |
core, coreIndex, datasetDescription, domains, filterMetadata, flattenedResolutions, group, hasCompanionFiles, in, indexedAsRGB, metadata, metadataStore, normalizeData, resolution, saveOriginalMetadata, series, suffixNecessary, suffixSufficient, THUMBNAIL_DIMENSION
COMPRESSION_SUFFIXES, currentId, format, LOGGER, metadataOptions, suffixes
CAN_GROUP, CANNOT_GROUP, MUST_GROUP
Constructor and Description |
---|
APNGReader()
Constructs a new APNGReader.
|
Modifier and Type | Method and Description |
---|---|
void |
close(boolean fileOnly)
Closes the currently open file.
|
private byte[] |
decode(APNGReader.PNGInputStream bytes) |
private byte[] |
decode(APNGReader.PNGInputStream bytes,
int width,
int height) |
byte[][] |
get8BitLookupTable()
Gets the 8-bit color lookup table associated with
the most recently opened image.
|
protected void |
initFile(String id)
Initializes the given file (parsing header information, etc.).
|
boolean |
isThisType(RandomAccessInputStream stream)
Checks if the given stream is a valid stream for this file format.
|
byte[] |
openBytes(int no,
byte[] buf,
int x,
int y,
int w,
int h)
Obtains a sub-image of the specified image plane
into a pre-allocated byte array.
|
private void |
unfilter(byte[] filters,
byte[] image,
int width,
int height)
See http://www.w3.org/TR/PNG/#9Filters.
|
addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMetaList, addMeta, addMetaList, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMetaList, close, coreIndexToSeries, fileGroupOption, flattenHashtables, get16BitLookupTable, getAcquisitionMode, getAdvancedSeriesUsedFiles, getAdvancedUsedFiles, getArcType, getBinning, getBitsPerPixel, getCompression, getContrastMethod, getCoreIndex, getCoreMetadataList, getCorrection, getCurrentFile, getDatasetStructureDescription, getDetectorType, getDimensionOrder, getDimensionOrder, getDomains, getEffectiveSizeC, getExperimentType, getFilamentType, getFillRule, getFilterType, getFontFamily, getFontStyle, getGlobalMeta, getGlobalMetadata, getIlluminationType, getImageCount, getImmersion, getIndex, getIndex, getLaserMedium, getLaserType, getMarker, getMedium, getMetadataStore, getMetadataStoreRoot, getMetadataValue, getMicrobeamManipulationType, getMicroscopeType, getModuloC, getModuloT, getModuloZ, getNamingConvention, getOptimalTileHeight, getOptimalTileWidth, getPixelType, getPixelType, getPossibleDomains, getPulse, getRequiredDirectories, getResolution, getResolutionCount, getRGBChannelCount, getRotationTransform, getSeries, getSeriesCount, getSeriesMeta, getSeriesMetadata, getSeriesMetadataValue, getSeriesUsedFiles, getSeriesUsedFiles, getSizeC, getSizeT, getSizeX, getSizeY, getSizeZ, getThumbSizeX, getThumbSizeY, getUnderlyingReaders, getUsedFiles, getUsedFiles, getZCTCoords, getZCTModuloCoords, hasCompanionFiles, hasFlattenedResolutions, isFalseColor, isGroupFiles, isIndexed, isInterleaved, isInterleaved, isLittleEndian, isMetadataComplete, isMetadataFiltered, isNormalized, isOrderCertain, isOriginalMetadataPopulated, isRGB, isSingleFile, isThisType, isThisType, isThisType, isThumbnailSeries, isUsedFile, makeFilterMetadata, openBytes, openBytes, openBytes, openPlane, openThumbBytes, readPlane, readPlane, reopenFile, seriesToCoreIndex, setCoreIndex, setFlattenedResolutions, setGroupFiles, setId, setMetadataFiltered, setMetadataStore, setNormalized, setOriginalMetadataPopulated, setResolution, setSeries
checkSuffix, checkSuffix, getFormat, getMetadataOptions, getNativeDataType, getSuffixes, getSupportedMetadataLevels, setMetadataOptions
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
getFormat, getNativeDataType, getSuffixes
getMetadataOptions, getSupportedMetadataLevels, setMetadataOptions
private static final int GRAYSCALE
private static final int TRUE_COLOR
private static final int INDEXED
private static final int GRAY_ALPHA
private static final int TRUE_ALPHA
private static final int NONE
private static final int SUB
private static final int UP
private static final int AVERAGE
private static final int PAETH
private static final int[] PASS_WIDTHS
private static final int[] PASS_HEIGHTS
private Vector<APNGReader.PNGBlock> blocks
private Vector<int[]> frameCoordinates
private byte[][] lut
private byte[] lastImage
private int lastImageIndex
private int lastImageRow
private int compression
private int interlace
private int idatCount
public boolean isThisType(RandomAccessInputStream stream) throws IOException
IFormatReader
isThisType
in interface IFormatReader
isThisType
in class FormatReader
IOException
public byte[][] get8BitLookupTable()
IFormatReader
IFormatReader.isIndexed()
returns
false, then this may return null. Also, if IFormatReader.getPixelType()
returns
anything other than FormatTools.INT8
or FormatTools.UINT8
,
this method will return null.get8BitLookupTable
in interface IFormatReader
get8BitLookupTable
in class FormatReader
public byte[] openBytes(int no, byte[] buf, int x, int y, int w, int h) throws FormatException, IOException
IFormatReader
openBytes
in interface IFormatReader
openBytes
in class FormatReader
no
- the image index within the file.buf
- a pre-allocated buffer.x
- X coordinate of the upper-left corner of the sub-imagey
- Y coordinate of the upper-left corner of the sub-imagew
- width of the sub-imageh
- height of the sub-imagebuf
for convenience.FormatException
- if there was a problem parsing the metadata of the
file.IOException
- if there was a problem reading the file.IFormatReader.openBytes(int, byte[], int, int, int, int)
public void close(boolean fileOnly) throws IOException
IFormatReader
Closeable.close()
.close
in interface IFormatReader
close
in class FormatReader
IOException
protected void initFile(String id) throws FormatException, IOException
FormatReader
initFile
in class FormatReader
FormatException
- if a parsing error occurs processing the file.IOException
- if an I/O error occurs processing the fileprivate byte[] decode(APNGReader.PNGInputStream bytes) throws FormatException, IOException
FormatException
IOException
private byte[] decode(APNGReader.PNGInputStream bytes, int width, int height) throws FormatException, IOException
FormatException
IOException
private void unfilter(byte[] filters, byte[] image, int width, int height) throws FormatException
FormatException
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