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Java Source Code / Java Documentation » Ajax » Laszlo 4.0.10 » org.openlaszlo.iv.flash.util 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.openlaszlo.iv.flash.util.FlashBuffer

All known Subclasses:   org.openlaszlo.iv.flash.util.FlashOutput,  org.openlaszlo.iv.flash.parser.Parser,
FlashBuffer
public class FlashBuffer (Code)
Wrapper of array of bytes.

Provides reading and writing of flash related data types.
author:
   Dmitry Skavish
See Also:   FlashOutput


Inner Class :public class FlashBufferInputStream extends InputStream
Inner Class :public class FlashBufferOutputStream extends OutputStream

Field Summary
public  intpos
    

Constructor Summary
public  FlashBuffer()
    
public  FlashBuffer(int capacity)
     Allocates buffer of given capacity.

Sets current position and size to zero.

public  FlashBuffer(byte[] buf)
     Creates buffer from given one.

Sets current position to zero and size to the size of the buffer.

public  FlashBuffer(byte[] buf, int size)
     Creates buffer from given one of specified size.

Sets current position to zero and size to given value.

public  FlashBuffer(byte[] buf, int pos, int size)
     Creates buffer from given one of specified size and position.
public  FlashBuffer(InputStream is)
     Creates FlashBuffer from input stream.

Reads InputStream into the buffer, sets current position to zero and size to the size of data read.


Method Summary
final public  void_writeArray(byte b, int off, int len)
     Writes array into this one and advance current position.
final public  void_writeByte(int b)
     Writes byte and advance current position.
final public  void_writeDWord(int b)
     Writes dword and advance current position.
final public  byte[]_writeStringZ(String s)
     Writes zero-ending string into the buffer and advance current position.
final public  byte[]_writeStringZ(String s, String encoding)
     Writes zero-ending string into the buffer and advance current position.
final public  void_writeWord(int b)
     Writes word and advance current position.
final public  voidensureCapacity(int cap)
    
final public  voidflushBits()
    
final public  intgetBits(int n)
     Reads unsigned bits from the buffer.

According to profiler this is probably the most time consuming operation.

public  booleangetBool()
    
final public  byte[]getBuf()
     Returns the whole buffer.
final public  intgetByte()
     Reads one signed byte.
final public  intgetByteAt(int p)
    
final public  byte[]getBytes(int length)
     Reads bytes into array of bytes.
public  FlashBuffergetCopy()
     Creates copy of the buffer.
public  intgetDWord()
     Reads one signed dword.
public  intgetDWordAt(int p)
    
public  InputStreamgetInputStream()
     Creates input stream which can be used to read data from this buffer.
public  InputStreamgetInputStream(int pos)
     Creates input stream which can be used to read data from this buffer.
public  AffineTransformgetMatrix()
    
public  OutputStreamgetOutputStream()
     Creates output stream which can be used to write data to this buffer.
final public  intgetPos()
     Current read/write position.
public  Rectangle2DgetRect()
    
final public  intgetSBits(int n)
    
final public  intgetSize()
     Returns size of the buffer.
final public  StringgetString()
     Reads zero-ending string.
final public  StringgetString(int length)
     Read string by its length.
final public  voidgetTo(FlashBuffer fob, int length)
     Reads bytes into given FlashBuffer.
final public  intgetUByte()
     Reads one unsigned byte.
final public  intgetUByteAt(int p)
    
public  intgetUDWord()
     Reads one unsigned dword.
public  intgetUDWordAt(int p)
    
final public  intgetUWord()
     Reads one unsigned word.
final public  intgetUWordAt(int p)
    
final public  intgetWord()
     Reads one signed word.
final public  intgetWordAt(int p)
    
final public  voidincPos()
     Increment current position.

Does not increase the buffer if new position is larger than current capacity.

public  voidinit(byte[] buf, int pos, int size)
    
final public  voidinitBits()
    
final public  intnew_getBits(int n)
    
final public  voidsetPos(int pos)
     Sets current read/write position.

Does not increase the buffer if new position is larger than current capacity.

final public  voidsetSize(int size)
     Sets new size of the buffer.

Does not increase the buffer if new position is larger than current capacity.

final public  voidskip(int inc)
     Skips bytes (changes current position).

Does not increase the buffer if new position is larger than current capacity.

final public  voidskipBits(int n)
     Skips bits.
public  voidskipMatrix()
    
public  voidskipRect()
    
public  StringtoString()
    
public  StringtoString(String encoding)
    
final public  voidwrite(InputStream is)
    
public  voidwrite(AffineTransform m)
    
public  voidwrite(Rectangle2D r)
    
final public  voidwriteArray(byte b, int off, int len)
     Writes array into this one and advance current position.
final public  voidwriteBit(int b)
     Writes lower bit to bit buffer.
final public  voidwriteBits(int v, int len)
    
final public  voidwriteBool(boolean b)
     Writes boolean as a bit to bit buffer.
final public  voidwriteByte(int b)
     Writes byte and advance current position.
final public  voidwriteByteAt(int b, int pos)
     Writes byte at specified position.

Does not change current position.

final public  voidwriteDWord(int b)
     Writes dword and advance current position.
final public  voidwriteDWordAt(int b, int pos)
     Writes dword at specified position.

Does not change current position.

final public  voidwriteFOB(FlashBuffer fob)
     Writes FlashBuffer into this one and advance current position.
final public  voidwriteLongTag(int tagCode, int tagSize)
    
final public  voidwriteLongTagAt(int tagCode, int tagSize, int pos)
    
final public  voidwriteShortTagAt(int tagCode, int tagSize, int pos)
    
final public  voidwriteStringL(String s)
     Writes length-prefixed string into the buffer and advance current position.
final public  voidwriteStringL(String s, String encoding)
     Writes length-prefixed string into the buffer and advance current position.
final public  byte[]writeStringZ(String s)
     Writes zero-ending string into the buffer and advance current position.
final public  byte[]writeStringZ(String s, String encoding)
     Writes zero-ending string into the buffer and advance current position.
final public  voidwriteTag(int tagCode, int tagSize)
    
final public  voidwriteWord(int b)
     Writes word and advance current position.
final public  voidwriteWordAt(int b, int pos)
     Writes word at specified position.

Does not change current position.


Field Detail
pos
public int pos(Code)



Constructor Detail
FlashBuffer
public FlashBuffer()(Code)


FlashBuffer
public FlashBuffer(int capacity)(Code)
Allocates buffer of given capacity.

Sets current position and size to zero.
Parameters:
  capacity - capacity of allocated buffer in bytes



FlashBuffer
public FlashBuffer(byte[] buf)(Code)
Creates buffer from given one.

Sets current position to zero and size to the size of the buffer.
Parameters:
  buf - buffer to init from



FlashBuffer
public FlashBuffer(byte[] buf, int size)(Code)
Creates buffer from given one of specified size.

Sets current position to zero and size to given value.
Parameters:
  buf - buffer to init from
Parameters:
  size - size of buffer



FlashBuffer
public FlashBuffer(byte[] buf, int pos, int size)(Code)
Creates buffer from given one of specified size and position.
Parameters:
  buf - buffer to init from
Parameters:
  pos - current position
Parameters:
  size - size of filled buffer (writer pos)


FlashBuffer
public FlashBuffer(InputStream is) throws IOException(Code)
Creates FlashBuffer from input stream.

Reads InputStream into the buffer, sets current position to zero and size to the size of data read.
author:
   Andrew Wason
author:
   Dmitry Skavish
Parameters:
  is - InputStream to read from
exception:
  IOException -




Method Detail
_writeArray
final public void _writeArray(byte b, int off, int len)(Code)
Writes array into this one and advance current position.
Parameters:
  b - intput buffer
Parameters:
  off - offset in the input buffer
Parameters:
  len - number of bytes in input buffer


_writeByte
final public void _writeByte(int b)(Code)
Writes byte and advance current position.
Parameters:
  b - byte to write


_writeDWord
final public void _writeDWord(int b)(Code)
Writes dword and advance current position.
Parameters:
  b - dword to write


_writeStringZ
final public byte[] _writeStringZ(String s)(Code)
Writes zero-ending string into the buffer and advance current position. (Flash5 back compatibility, uses Cp1252 encoding)
Parameters:
  s - string to write


_writeStringZ
final public byte[] _writeStringZ(String s, String encoding)(Code)
Writes zero-ending string into the buffer and advance current position.
Parameters:
  s - string to write the string converted to a byte array in Flash's favorite encoding


_writeWord
final public void _writeWord(int b)(Code)
Writes word and advance current position.
Parameters:
  b - word to write


ensureCapacity
final public void ensureCapacity(int cap)(Code)
Ensures that the buffer is as big as specified number of bytes
Parameters:
  cap - required size of buffer


flushBits
final public void flushBits()(Code)
Flushes bits buffer into flash buffer.

Has to be called after you finished writing series of bits
See Also:   FlashBuffer.writeBits
See Also:   FlashBuffer.initBits



getBits
final public int getBits(int n)(Code)
Reads unsigned bits from the buffer.

According to profiler this is probably the most time consuming operation. Below there is a new version, but I did not test it much, it's about 30% percent faster.
Parameters:
  n - number of bits to read read bits
See Also:   FlashBuffer.initBits
See Also:   FlashBuffer.getSBits



getBool
public boolean getBool()(Code)
Reads one bit and returns it as boolean true - if bit is 1, false - if bit is 0


getBuf
final public byte[] getBuf()(Code)
Returns the whole buffer. buffer


getByte
final public int getByte()(Code)
Reads one signed byte. signed byte


getByteAt
final public int getByteAt(int p)(Code)


getBytes
final public byte[] getBytes(int length)(Code)
Reads bytes into array of bytes.
Parameters:
  length - number of bytes to read created array of bytes with data


getCopy
public FlashBuffer getCopy()(Code)
Creates copy of the buffer. copy of the buffer


getDWord
public int getDWord()(Code)
Reads one signed dword. signed dword


getDWordAt
public int getDWordAt(int p)(Code)


getInputStream
public InputStream getInputStream()(Code)
Creates input stream which can be used to read data from this buffer. input stream
See Also:   FlashBuffer.getOutputStream


getInputStream
public InputStream getInputStream(int pos)(Code)
Creates input stream which can be used to read data from this buffer.
Parameters:
  pos - first input position, position to start reading from input stream
See Also:   FlashBuffer.getOutputStream


getMatrix
public AffineTransform getMatrix()(Code)


getOutputStream
public OutputStream getOutputStream()(Code)
Creates output stream which can be used to write data to this buffer. output stream
See Also:   FlashBuffer.getInputStream


getPos
final public int getPos()(Code)
Current read/write position. current read/write position


getRect
public Rectangle2D getRect()(Code)


getSBits
final public int getSBits(int n)(Code)
Reads signed bits from the buffer.


Parameters:
  n - number of bits to read read bits extended with sign
See Also:   FlashBuffer.initBits
See Also:   FlashBuffer.getBits



getSize
final public int getSize()(Code)
Returns size of the buffer. size of the buffer


getString
final public String getString()(Code)
Reads zero-ending string. read string


getString
final public String getString(int length)(Code)
Read string by its length.
Parameters:
  length - string length read string


getTo
final public void getTo(FlashBuffer fob, int length)(Code)
Reads bytes into given FlashBuffer.
Parameters:
  fob - flash buffer where to read bytes
Parameters:
  length - number of bytes to read


getUByte
final public int getUByte()(Code)
Reads one unsigned byte. unsigned byte


getUByteAt
final public int getUByteAt(int p)(Code)


getUDWord
public int getUDWord()(Code)
Reads one unsigned dword. unsigned dword


getUDWordAt
public int getUDWordAt(int p)(Code)


getUWord
final public int getUWord()(Code)
Reads one unsigned word. unsigned word


getUWordAt
final public int getUWordAt(int p)(Code)


getWord
final public int getWord()(Code)
Reads one signed word. signed word


getWordAt
final public int getWordAt(int p)(Code)


incPos
final public void incPos()(Code)
Increment current position.

Does not increase the buffer if new position is larger than current capacity.
See Also:   FlashBuffer.ensureCapacity
See Also:   FlashBuffer.setPos



init
public void init(byte[] buf, int pos, int size)(Code)


initBits
final public void initBits()(Code)
Inits bits buffer.

Has to be called before writing series of bits or before reading bits
See Also:   FlashBuffer.writeBits
See Also:   FlashBuffer.flushBits
See Also:   FlashBuffer.skipBits
See Also:   FlashBuffer.getBits



new_getBits
final public int new_getBits(int n)(Code)


setPos
final public void setPos(int pos)(Code)
Sets current read/write position.

Does not increase the buffer if new position is larger than current capacity.
Parameters:
  pos - new position
See Also:   FlashBuffer.ensureCapacity



setSize
final public void setSize(int size)(Code)
Sets new size of the buffer.

Does not increase the buffer if new position is larger than current capacity.
Parameters:
  size - new size of the buffer



skip
final public void skip(int inc)(Code)
Skips bytes (changes current position).

Does not increase the buffer if new position is larger than current capacity.
Parameters:
  inc - advance value



skipBits
final public void skipBits(int n)(Code)
Skips bits.
Parameters:
  n - number of bits to skip
See Also:   FlashBuffer.initBits


skipMatrix
public void skipMatrix()(Code)
Skips MATRIX tag without creating Matrix object


skipRect
public void skipRect()(Code)
Skips rectangle


toString
public String toString()(Code)


toString
public String toString(String encoding) throws java.io.UnsupportedEncodingException(Code)


write
final public void write(InputStream is) throws IOException(Code)
Writes specified inputstream to this buffer
Parameters:
  is - input stream


write
public void write(AffineTransform m)(Code)


write
public void write(Rectangle2D r)(Code)


writeArray
final public void writeArray(byte b, int off, int len)(Code)
Writes array into this one and advance current position.
Parameters:
  b - intput buffer
Parameters:
  off - offset in the input buffer
Parameters:
  len - number of bytes in input buffer


writeBit
final public void writeBit(int b)(Code)
Writes lower bit to bit buffer.
Parameters:
  b - bit to write
See Also:   FlashBuffer.initBits
See Also:   FlashBuffer.flushBits
See Also:   FlashBuffer.writeBits


writeBits
final public void writeBits(int v, int len)(Code)
Writes bits into the buffer.

Before starting writing bits you have to init or flush bits buffer using methods FlashBuffer.initBits or FlashBuffer.flushBits
Parameters:
  v - bits to write packed in integer
Parameters:
  len - number of bits to write
See Also:   FlashBuffer.initBits
See Also:   FlashBuffer.flushBits



writeBool
final public void writeBool(boolean b)(Code)
Writes boolean as a bit to bit buffer.
Parameters:
  b - boolean to write
See Also:   FlashBuffer.initBits
See Also:   FlashBuffer.flushBits


writeByte
final public void writeByte(int b)(Code)
Writes byte and advance current position.
Parameters:
  b - byte to write


writeByteAt
final public void writeByteAt(int b, int pos)(Code)
Writes byte at specified position.

Does not change current position.
Parameters:
  b - byte to write
Parameters:
  pos - position to write



writeDWord
final public void writeDWord(int b)(Code)
Writes dword and advance current position.
Parameters:
  b - dword to write


writeDWordAt
final public void writeDWordAt(int b, int pos)(Code)
Writes dword at specified position.

Does not change current position.
Parameters:
  b - dword to write
Parameters:
  pos - position to write



writeFOB
final public void writeFOB(FlashBuffer fob)(Code)
Writes FlashBuffer into this one and advance current position.
Parameters:
  fob - buffer to write


writeLongTag
final public void writeLongTag(int tagCode, int tagSize)(Code)
Writes long flash tag into the buffer and advance current position.


Parameters:
  tagCode - tag code
Parameters:
  tagSize - tag size
See Also:   Tag
See Also:   FlashBuffer.writeTag
See Also:   FlashBuffer.writeLongTagAt
See Also:   FlashBuffer.writeShortTagAt



writeLongTagAt
final public void writeLongTagAt(int tagCode, int tagSize, int pos)(Code)
Writes long flash tag into the buffer at specified position.

Does not advance position
Parameters:
  tagCode - tag code
Parameters:
  tagSize - tag size
See Also:   Tag
See Also:   FlashBuffer.writeLongTag
See Also:   FlashBuffer.writeShortTagAt
See Also:   FlashBuffer.writeTag



writeShortTagAt
final public void writeShortTagAt(int tagCode, int tagSize, int pos)(Code)
Writes short flash tag into the buffer at specified position.

Does not advance position
Parameters:
  tagCode - tag code
Parameters:
  tagSize - tag size
See Also:   Tag
See Also:   FlashBuffer.writeLongTag
See Also:   FlashBuffer.writeLongTagAt
See Also:   FlashBuffer.writeTag



writeStringL
final public void writeStringL(String s)(Code)
Writes length-prefixed string into the buffer and advance current position.
Parameters:
  s - string to write


writeStringL
final public void writeStringL(String s, String encoding)(Code)
Writes length-prefixed string into the buffer and advance current position.
Parameters:
  s - string to write
Parameters:
  encoding - charset encoding to use


writeStringZ
final public byte[] writeStringZ(String s)(Code)
Writes zero-ending string into the buffer and advance current position. +++ Back compatible with Jgen-1.4/Flash5 Uses default encoding of JGen 1.4, "Cp1252".
Parameters:
  s - string to write


writeStringZ
final public byte[] writeStringZ(String s, String encoding)(Code)
Writes zero-ending string into the buffer and advance current position.
Parameters:
  s - string to write
Parameters:
  encoding - charset encoding to use


writeTag
final public void writeTag(int tagCode, int tagSize)(Code)
Writes flash tag into the buffer and advance current position.

Depending on tag length writes short or long tag
Parameters:
  tagCode - tag code
Parameters:
  tagSize - tag size
See Also:   Tag
See Also:   FlashBuffer.writeLongTag
See Also:   FlashBuffer.writeLongTagAt
See Also:   FlashBuffer.writeShortTagAt



writeWord
final public void writeWord(int b)(Code)
Writes word and advance current position.
Parameters:
  b - word to write


writeWordAt
final public void writeWordAt(int b, int pos)(Code)
Writes word at specified position.

Does not change current position.
Parameters:
  b - word to write
Parameters:
  pos - position to write



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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