net.ifok.image.image4j.codec.bmp

类 BMPDecoder

java.lang.Object

net.ifok.image.image4j.codec.bmp.BMPDecoder

public class BMPDecoder
extends Object

Decodes images in BMP format.

作者:

Ian McDonagh

构造器概要

构造器

构造器和说明
BMPDecoder(InputStream in) Creates a new instance of BMPDecoder and reads the BMP data from the source.

方法概要

限定符和类型	方法和说明
BufferedImage	getBufferedImage() The decoded image read from the source input.
InfoHeader	getInfoHeader() The InfoHeader structure, which provides information about the BMP data.
static BufferedImage	read(File file) Reads and decodes BMP data from the source file.
static BufferedImage	read(InfoHeader infoHeader, LittleEndianInputStream lis) Reads the BMP data from the given InputStream using the information contained in the InfoHeader.
static BufferedImage	read(InfoHeader infoHeader, LittleEndianInputStream lis, ColorEntry[] colorTable) Reads the BMP data from the given InputStream using the information contained in the InfoHeader.
static BufferedImage	read(InputStream in) Reads and decodes BMP data from the source input.
static BufferedImage	read1(InfoHeader infoHeader, LittleEndianInputStream lis, ColorEntry[] colorTable) Reads 1-bit uncompressed bitmap raster data, which may be monochrome depending on the palette entries in colorTable.
static BufferedImage	read24(InfoHeader infoHeader, LittleEndianInputStream lis) Reads 24-bit uncompressed bitmap raster data.
static BufferedImage	read32(InfoHeader infoHeader, LittleEndianInputStream lis) Reads 32-bit uncompressed bitmap raster data, with transparency.
static BufferedImage	read4(InfoHeader infoHeader, LittleEndianInputStream lis, ColorEntry[] colorTable) Reads 4-bit uncompressed bitmap raster data, which is interpreted based on the colours specified in the palette.
static BufferedImage	read8(InfoHeader infoHeader, LittleEndianInputStream lis, ColorEntry[] colorTable) Reads 8-bit uncompressed bitmap raster data, which is interpreted based on the colours specified in the palette.
static ColorEntry[]	readColorTable(InfoHeader infoHeader, LittleEndianInputStream lis) Reads the ColorEntry table from the given InputStream using the information contained in the given infoHeader.
static BMPImage	readExt(File file) Reads and decodes BMP data from the source file, together with metadata.
static BMPImage	readExt(InputStream in) Reads and decodes BMP data from the source input, together with metadata.
static InfoHeader	readInfoHeader(LittleEndianInputStream lis) Reads the BMP info header structure from the given InputStream.
static InfoHeader	readInfoHeader(LittleEndianInputStream lis, int infoSize)

从类继承的方法 java.lang.Object

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

构造器详细资料

BMPDecoder

public BMPDecoder(InputStream in)
           throws IOException

Creates a new instance of BMPDecoder and reads the BMP data from the source.

参数:

in - the source InputStream from which to read the BMP data

抛出:

IOException - if an error occurs

方法详细资料

getInfoHeader

public InfoHeader getInfoHeader()

The InfoHeader structure, which provides information about the BMP data.

返回:

the InfoHeader structure that was read from the source data when this BMPDecoder was created.

getBufferedImage

public BufferedImage getBufferedImage()

The decoded image read from the source input.

返回:

the BufferedImage representing the BMP image.

readInfoHeader

public static InfoHeader readInfoHeader(LittleEndianInputStream lis)
                                 throws IOException

Reads the BMP info header structure from the given InputStream.

参数:

lis - the InputStream to read

返回:

the InfoHeader structure

抛出:

IOException - if an error occurred

readInfoHeader

public static InfoHeader readInfoHeader(LittleEndianInputStream lis,
                                        int infoSize)
                                 throws IOException

抛出:

IOException

从以下版本开始:

0.6

read

public static BufferedImage read(InfoHeader infoHeader,
                                 LittleEndianInputStream lis)
                          throws IOException

Reads the BMP data from the given InputStream using the information contained in the InfoHeader.

参数:

lis - the source input

infoHeader - an InfoHeader that was read by a call to readInfoHeader().

返回:

the decoded image read from the source input

抛出:

IOException - if an error occurs

read

public static BufferedImage read(InfoHeader infoHeader,
                                 LittleEndianInputStream lis,
                                 ColorEntry[] colorTable)
                          throws IOException

Reads the BMP data from the given InputStream using the information contained in the InfoHeader.

参数:

colorTable - ColorEntry array containing palette

infoHeader - an InfoHeader that was read by a call to readInfoHeader().

lis - the source input

返回:

the decoded image read from the source input

抛出:

IOException - if any error occurs

readColorTable

public static ColorEntry[] readColorTable(InfoHeader infoHeader,
                                          LittleEndianInputStream lis)
                                   throws IOException

Reads the ColorEntry table from the given InputStream using the information contained in the given infoHeader.

参数:

infoHeader - the InfoHeader structure, which was read using readInfoHeader()

lis - the InputStream to read

返回:

the decoded image read from the source input

抛出:

IOException - if an error occurs

read1

public static BufferedImage read1(InfoHeader infoHeader,
                                  LittleEndianInputStream lis,
                                  ColorEntry[] colorTable)
                           throws IOException

Reads 1-bit uncompressed bitmap raster data, which may be monochrome depending on the palette entries in colorTable.

参数:

infoHeader - the InfoHeader structure, which was read using readInfoHeader()

lis - the source input

colorTable - ColorEntry array specifying the palette, which must not be null.

返回:

the decoded image read from the source input

抛出:

IOException - if an error occurs

read4

public static BufferedImage read4(InfoHeader infoHeader,
                                  LittleEndianInputStream lis,
                                  ColorEntry[] colorTable)
                           throws IOException

Reads 4-bit uncompressed bitmap raster data, which is interpreted based on the colours specified in the palette.

参数:

infoHeader - the InfoHeader structure, which was read using readInfoHeader()

lis - the source input

colorTable - ColorEntry array specifying the palette, which must not be null.

返回:

the decoded image read from the source input

抛出:

IOException - if an error occurs

read8

public static BufferedImage read8(InfoHeader infoHeader,
                                  LittleEndianInputStream lis,
                                  ColorEntry[] colorTable)
                           throws IOException

Reads 8-bit uncompressed bitmap raster data, which is interpreted based on the colours specified in the palette.

参数:

infoHeader - the InfoHeader structure, which was read using readInfoHeader()

lis - the source input

colorTable - ColorEntry array specifying the palette, which must not be null.

返回:

the decoded image read from the source input

抛出:

IOException - if an error occurs

read24

public static BufferedImage read24(InfoHeader infoHeader,
                                   LittleEndianInputStream lis)
                            throws IOException

Reads 24-bit uncompressed bitmap raster data.

参数:

lis - the source input

infoHeader - the InfoHeader structure, which was read using readInfoHeader()

返回:

the decoded image read from the source input

抛出:

IOException - if an error occurs

read32

public static BufferedImage read32(InfoHeader infoHeader,
                                   LittleEndianInputStream lis)
                            throws IOException

Reads 32-bit uncompressed bitmap raster data, with transparency.

参数:

lis - the source input

infoHeader - the InfoHeader structure, which was read using readInfoHeader()

返回:

the decoded image read from the source input

抛出:

IOException - if an error occurs

read

public static BufferedImage read(File file)
                          throws IOException

Reads and decodes BMP data from the source file.

参数:

file - the source file

返回:

the decoded image read from the source file

抛出:

IOException - if an error occurs

read

public static BufferedImage read(InputStream in)
                          throws IOException

Reads and decodes BMP data from the source input.

参数:

in - the source input

返回:

the decoded image read from the source file

抛出:

IOException - if an error occurs

readExt

public static BMPImage readExt(File file)
                        throws IOException

Reads and decodes BMP data from the source file, together with metadata.

参数:

file - the source file

返回:

the decoded image read from the source file

抛出:

IOException - if an error occurs

从以下版本开始:

0.7

readExt

public static BMPImage readExt(InputStream in)
                        throws IOException

Reads and decodes BMP data from the source input, together with metadata.

参数:

in - the source input

返回:

the decoded image read from the source file

抛出:

IOException - if an error occurs

从以下版本开始:

0.7