public class JpegDirectory extends Directory
Modifier and Type | Field and Description |
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static int |
TAG_JPEG_COMPONENT_DATA_1
the first of a possible 4 color components.
|
static int |
TAG_JPEG_COMPONENT_DATA_2
the second of a possible 4 color components.
|
static int |
TAG_JPEG_COMPONENT_DATA_3
the third of a possible 4 color components.
|
static int |
TAG_JPEG_COMPONENT_DATA_4
the fourth of a possible 4 color components.
|
static int |
TAG_JPEG_DATA_PRECISION
This is in bits/sample, usually 8 (12 and 16 not supported by most software).
|
static int |
TAG_JPEG_IMAGE_HEIGHT
The image's height.
|
static int |
TAG_JPEG_IMAGE_WIDTH
The image's width.
|
static int |
TAG_JPEG_NUMBER_OF_COMPONENTS
Usually 1 = grey scaled, 3 = color YcbCr or YIQ, 4 = color CMYK
Each component TAG_COMPONENT_DATA_[1-4], has the following meaning:
component Id(1byte)(1 = Y, 2 = Cb, 3 = Cr, 4 = I, 5 = Q),
sampling factors (1byte) (bit 0-3 vertical., 4-7 horizontal.),
quantization table number (1 byte).
|
protected static java.util.HashMap |
tagNameMap |
_definedTagList, _descriptor, _tagMap
Constructor and Description |
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JpegDirectory() |
Modifier and Type | Method and Description |
---|---|
JpegComponent |
getComponent(int componentNumber) |
int |
getImageHeight() |
int |
getImageWidth() |
java.lang.String |
getName()
Provides the name of the directory, for display purposes.
|
int |
getNumberOfComponents() |
protected java.util.HashMap |
getTagNameMap()
Provides the map of tag names, hashed by tag type identifier.
|
addError, containsTag, getBoolean, getByteArray, getDate, getDescription, getDouble, getErrorCount, getErrors, getFloat, getInt, getIntArray, getLong, getObject, getRational, getRationalArray, getString, getStringArray, getTagCount, getTagIterator, getTagName, hasErrors, setBoolean, setByteArray, setDate, setDescriptor, setDouble, setFloat, setInt, setIntArray, setLong, setObject, setObjectArray, setRational, setRationalArray, setString, setStringArray
public static final int TAG_JPEG_DATA_PRECISION
public static final int TAG_JPEG_IMAGE_HEIGHT
public static final int TAG_JPEG_IMAGE_WIDTH
public static final int TAG_JPEG_NUMBER_OF_COMPONENTS
This info is from http://www.funducode.com/freec/Fileformats/format3/format3b.htm
public static final int TAG_JPEG_COMPONENT_DATA_1
public static final int TAG_JPEG_COMPONENT_DATA_2
public static final int TAG_JPEG_COMPONENT_DATA_3
public static final int TAG_JPEG_COMPONENT_DATA_4
protected static final java.util.HashMap tagNameMap
public java.lang.String getName()
Directory
Exif
protected java.util.HashMap getTagNameMap()
Directory
getTagNameMap
in class Directory
public JpegComponent getComponent(int componentNumber)
componentNumber
- The zero-based index of the component. This number is normally between 0 and 3.
Use getNumberOfComponents for bounds-checking.public int getImageWidth() throws MetadataException
MetadataException
public int getImageHeight() throws MetadataException
MetadataException
public int getNumberOfComponents() throws MetadataException
MetadataException
Copyright © 2006 Drew Noakes. All Rights Reserved.