Class DataBufferByte
- java.lang.Object
-
- java.awt.image.DataBuffer
-
- java.awt.image.DataBufferByte
public final class DataBufferByte extends DataBuffer
This class extends DataBuffer
and stores data internally as bytes. Values stored in the byte array(s) of this DataBuffer
are treated as unsigned values.
Field Summary
Fields declared in class java.awt.image.DataBuffer
banks, dataType, offset, offsets, size, TYPE_BYTE, TYPE_DOUBLE, TYPE_FLOAT, TYPE_INT, TYPE_SHORT, TYPE_UNDEFINED, TYPE_USHORT
Constructor Summary
Constructor | Description |
---|---|
DataBufferByte(byte[][] dataArray,
int size) | Constructs a byte-based |
DataBufferByte(byte[][] dataArray,
int size,
int[] offsets) | Constructs a byte-based |
DataBufferByte(byte[] dataArray,
int size) | Constructs a byte-based |
DataBufferByte(byte[] dataArray,
int size,
int offset) | Constructs a byte-based |
DataBufferByte(int size) | Constructs a byte-based |
DataBufferByte(int size,
int numBanks) | Constructs a byte based |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
byte[][] | getBankData() | Returns the data arrays for all banks. |
byte[] | getData() | Returns the default (first) byte data array. |
byte[] | getData(int bank) | Returns the data array for the specified bank. |
int | getElem(int i) | Returns the requested data array element from the first (default) bank. |
int | getElem(int bank,
int i) | Returns the requested data array element from the specified bank. |
void | setElem(int i,
int val) | Sets the requested data array element in the first (default) bank to the specified value. |
void | setElem(int bank,
int i,
int val) | Sets the requested data array element in the specified bank from the given integer. |
Methods declared in class java.awt.image.DataBuffer
getDataType, getDataTypeSize, getElemDouble, getElemDouble, getElemFloat, getElemFloat, getNumBanks, getOffset, getOffsets, getSize, setElemDouble, setElemDouble, setElemFloat, setElemFloat
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
DataBufferByte
public DataBufferByte(int size)
Constructs a byte-based DataBuffer
with a single bank and the specified size.
- Parameters:
-
size
- The size of theDataBuffer
.
DataBufferByte
public DataBufferByte(int size, int numBanks)
Constructs a byte based DataBuffer
with the specified number of banks all of which are the specified size.
- Parameters:
-
size
- The size of the banks in theDataBuffer
. -
numBanks
- The number of banks in the aDataBuffer
.
DataBufferByte
public DataBufferByte(byte[] dataArray, int size)
Constructs a byte-based DataBuffer
with a single bank using the specified array. Only the first size
elements should be used by accessors of this DataBuffer
. dataArray
must be large enough to hold size
elements.
Note that DataBuffer
objects created by this constructor may be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
- Parameters:
-
dataArray
- The byte array for theDataBuffer
. -
size
- The size of theDataBuffer
bank.
DataBufferByte
public DataBufferByte(byte[] dataArray, int size, int offset)
Constructs a byte-based DataBuffer
with a single bank using the specified array, size, and offset. dataArray
must have at least offset
+ size
elements. Only elements offset
through offset
+ size
- 1 should be used by accessors of this DataBuffer
.
Note that DataBuffer
objects created by this constructor may be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
- Parameters:
-
dataArray
- The byte array for theDataBuffer
. -
size
- The size of theDataBuffer
bank. -
offset
- The offset into thedataArray
.dataArray
must have at leastoffset
+size
elements.
DataBufferByte
public DataBufferByte(byte[][] dataArray, int size)
Constructs a byte-based DataBuffer
with the specified arrays. The number of banks is equal to dataArray.length
. Only the first size
elements of each array should be used by accessors of this DataBuffer
.
Note that DataBuffer
objects created by this constructor may be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
- Parameters:
-
dataArray
- The byte arrays for theDataBuffer
. -
size
- The size of the banks in theDataBuffer
.
DataBufferByte
public DataBufferByte(byte[][] dataArray, int size, int[] offsets)
Constructs a byte-based DataBuffer
with the specified arrays, size, and offsets. The number of banks is equal to dataArray.length
. Each array must be at least as large as size
+ the corresponding offset
. There must be an entry in the offset
array for each dataArray
entry. For each bank, only elements offset
through offset
+ size
- 1 should be used by accessors of this DataBuffer
.
Note that DataBuffer
objects created by this constructor may be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
- Parameters:
-
dataArray
- The byte arrays for theDataBuffer
. -
size
- The size of the banks in theDataBuffer
. -
offsets
- The offsets into each array.
Method Detail
getData
public byte[] getData()
Returns the default (first) byte data array.
Note that calling this method may cause this DataBuffer
object to be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
- Returns:
- The first byte data array.
getData
public byte[] getData(int bank)
Returns the data array for the specified bank.
Note that calling this method may cause this DataBuffer
object to be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
- Parameters:
-
bank
- The bank whose data array you want to get. - Returns:
- The data array for the specified bank.
getBankData
public byte[][] getBankData()
Returns the data arrays for all banks.
Note that calling this method may cause this DataBuffer
object to be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
- Returns:
- All of the data arrays.
getElem
public int getElem(int i)
Returns the requested data array element from the first (default) bank.
- Overrides:
-
getElem
in classDataBuffer
- Parameters:
-
i
- The data array element you want to get. - Returns:
- The requested data array element as an integer.
- See Also:
-
setElem(int, int)
,setElem(int, int, int)
getElem
public int getElem(int bank, int i)
Returns the requested data array element from the specified bank.
- Specified by:
-
getElem
in classDataBuffer
- Parameters:
-
bank
- The bank from which you want to get a data array element. -
i
- The data array element you want to get. - Returns:
- The requested data array element as an integer.
- See Also:
-
setElem(int, int)
,setElem(int, int, int)
setElem
public void setElem(int i, int val)
Sets the requested data array element in the first (default) bank to the specified value.
- Overrides:
-
setElem
in classDataBuffer
- Parameters:
-
i
- The data array element you want to set. -
val
- The integer value to which you want to set the data array element. - See Also:
-
getElem(int)
,getElem(int, int)
setElem
public void setElem(int bank, int i, int val)
Sets the requested data array element in the specified bank from the given integer.
- Specified by:
-
setElem
in classDataBuffer
- Parameters:
-
bank
- The bank in which you want to set the data array element. -
i
- The data array element you want to set. -
val
- The integer value to which you want to set the specified data array element. - See Also:
-
getElem(int)
,getElem(int, int)