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java.lang.Objectcom.flagstone.transform.FSTransformObject
com.flagstone.transform.FSMovieObject
com.flagstone.transform.FSDefineObject
com.flagstone.transform.FSDefineJPEGImage2
public class FSDefineJPEGImage2
FSDefineJPEGImage2 is used to define a JPEG encoded image with an integrated encoding table.
It extends the FSDefineJPEGImage class by including a separate encoding table, rather than using an FSJPEGEncodingTable object to store the encoding table. This allows multiple JPEG images with different amounts of compression to be included within a Flash file.
Attributes | |
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type | Identifies the data structure when it is encoded. Read-only. |
identifier | A unique identifier, in the range 1..65535, that is used to reference the image from other objects. |
image | An array of bytes containing the JPEG compressed image. |
encodingTable | An array of bytes containing the encoding table. May be set to null. |
Although the encoding table defines how the image is compressed it is not essential. If an FSDefineJPEGImage3 object is created with an empty encoding table then the Flash Player will still display the JPEG image correctly. The empty encoding table is not a null object. It contains four bytes: 0xFF, 0xD8, 0xFF, 0xD9. For convenience passing a null reference to any of the constructors or to the setEncodingTable method will create an empty table.
The simplest way to use the FSDefineJPEGImage2 class is to use the constructor that specifies the JPEG file to initialise the object:
File aFile = new File(filename); byte[] bytes = new byte[(int) aFile.length()]; try { FileInputStream imageContents = new FileInputStream(aFile); imageContents.read(bytes); imageContents.close(); } catch (FileNotFoundException e) { throw new FileNotFoundException(filename); } catch (IOException e) { throw new IOException(filename); } movie.add(new FSDefineJPEGImage2(movie.newIdentifier(), bytes));
This generates an object with an empty encoding table, however the image will still be displayed correctly.
The FSDefineJPEGImage2 class represents the DefineBitsJPEG2 tag from the Macromedia Flash (SWF) File Format Specification. It was introduced in Flash 2.
Field Summary |
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Fields inherited from class com.flagstone.transform.FSDefineObject |
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identifier |
Constructor Summary | |
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FSDefineJPEGImage2(FSCoder coder)
Construct an FSDefineJPEGImage2 object, initialising it with values decoded from an encoded object. |
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FSDefineJPEGImage2(FSDefineJPEGImage2 obj)
Constructs an FSDefineJPEGImage2 object by copying values from an existing object. |
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FSDefineJPEGImage2(int anIdentifier,
byte[] imageBytes)
Constructs an FSDefineJPEGImage2 object with the identifier, JPEG image data and JPEG encoding table data. |
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FSDefineJPEGImage2(int anIdentifier,
byte[] imageBytes,
byte[] encodingBytes)
Constructs an FSDefineJPEGImage2 object with the identifier, JPEG image data and JPEG encoding table data. |
Method Summary | |
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void |
appendDescription(java.lang.StringBuffer buffer,
int depth)
AppendDescription is used to present a string description of the object including all nested objects up to a specified depth. |
java.lang.Object |
clone()
Creates a deep copy of the entire object. |
void |
decode(FSCoder coder)
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void |
encode(FSCoder coder)
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boolean |
equals(java.lang.Object anObject)
Returns true if anObject is equal to this one. |
byte[] |
getEncodingTable()
Gets the encoding table. |
int |
getHeight()
Gets the height of the image in pixels. |
byte[] |
getImage()
Gets the image data. |
int |
getWidth()
Gets the width of the image in pixels. |
int |
length(FSCoder coder)
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void |
setEncodingTable(byte[] bytes)
Sets the encoding table. |
void |
setImage(byte[] bytes)
Sets the image data. |
Methods inherited from class com.flagstone.transform.FSDefineObject |
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getIdentifier, setIdentifier |
Methods inherited from class com.flagstone.transform.FSMovieObject |
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getType |
Methods inherited from class com.flagstone.transform.FSTransformObject |
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name, toString |
Methods inherited from class java.lang.Object |
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finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public FSDefineJPEGImage2(FSCoder coder)
coder
- an FSCoder containing the binary data.public FSDefineJPEGImage2(int anIdentifier, byte[] imageBytes, byte[] encodingBytes)
anIdentifier
- the unique identifier for this objectimageBytes
- the JPEG encoded image data.encodingBytes
- the JPEG encoded encoding table.public FSDefineJPEGImage2(int anIdentifier, byte[] imageBytes)
anIdentifier
- the unique identifier for this objectimageBytes
- the JPEG encoded image data.public FSDefineJPEGImage2(FSDefineJPEGImage2 obj)
obj
- an FSDefineJPEGImage2 object.Method Detail |
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public int getWidth()
public int getHeight()
public byte[] getImage()
public byte[] getEncodingTable()
public void setImage(byte[] bytes)
bytes
- an array of bytes containing the image data.public void setEncodingTable(byte[] bytes)
bytes
- an array of bytes containing the encoding table.public java.lang.Object clone()
FSTransformObject
clone
in class FSTransformObject
public boolean equals(java.lang.Object anObject)
FSMovieObject
equals
in class FSMovieObject
public void appendDescription(java.lang.StringBuffer buffer, int depth)
FSTransformObject
appendDescription
in class FSDefineObject
buffer
- a StringBuffer to which the description of each object is
appended.depth
- the maximum level of nesting up to which objects will be
displayed.public int length(FSCoder coder)
length
in class FSDefineObject
public void encode(FSCoder coder)
encode
in class FSDefineObject
public void decode(FSCoder coder)
decode
in class FSDefineObject
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