elemental.html

Interface DataView

All Superinterfaces:

ArrayBufferView

All Known Implementing Classes:

JsDataView

public interface DataView
extends ArrayBufferView

DRAFT

This page is not complete.

Note: DataView is not yet implemented in Gecko. It is implemented in Chrome 9.

An ArrayBuffer is a useful object for representing an arbitrary chunk of data. In many cases, such data will be read from disk or from the network, and will not follow the alignment restrictions that are imposed on the Typed Array Views described earlier. In addition, the data will often be heterogeneous in nature and have a defined byte order.

The DataView view provides a low-level interface for reading such data from and writing it to an ArrayBuffer.

Method Summary

Methods

Modifier and Type	Method and Description
float	getFloat32(int byteOffset)
float	getFloat32(int byteOffset, boolean littleEndian)
double	getFloat64(int byteOffset)
double	getFloat64(int byteOffset, boolean littleEndian)
short	getInt16(int byteOffset)
short	getInt16(int byteOffset, boolean littleEndian)
int	getInt32(int byteOffset)
int	getInt32(int byteOffset, boolean littleEndian)
Object	getInt8() Gets a signed 8-bit integer at the specified byte offset from the start of the view.
int	getUint16(int byteOffset)
int	getUint16(int byteOffset, boolean littleEndian)
int	getUint32(int byteOffset)
int	getUint32(int byteOffset, boolean littleEndian)
Object	getUint8() Gets an unsigned 8-bit integer at the specified byte offset from the start of the view.
void	setFloat32(int byteOffset, float value)
void	setFloat32(int byteOffset, float value, boolean littleEndian)
void	setFloat64(int byteOffset, double value)
void	setFloat64(int byteOffset, double value, boolean littleEndian)
void	setInt16(int byteOffset, short value)
void	setInt16(int byteOffset, short value, boolean littleEndian)
void	setInt32(int byteOffset, int value)
void	setInt32(int byteOffset, int value, boolean littleEndian)
void	setInt8()
void	setUint16(int byteOffset, int value)
void	setUint16(int byteOffset, int value, boolean littleEndian)
void	setUint32(int byteOffset, int value)
void	setUint32(int byteOffset, int value, boolean littleEndian)
void	setUint8()

Methods inherited from interface elemental.html.ArrayBufferView

getBuffer, getByteLength, getByteOffset

Method Detail

getFloat32

float getFloat32(int byteOffset)

getFloat32

float getFloat32(int byteOffset,
               boolean littleEndian)

getFloat64

double getFloat64(int byteOffset)

getFloat64

double getFloat64(int byteOffset,
                boolean littleEndian)

getInt16

short getInt16(int byteOffset)

getInt16

short getInt16(int byteOffset,
             boolean littleEndian)

getInt32

int getInt32(int byteOffset)

getInt32

int getInt32(int byteOffset,
           boolean littleEndian)

getInt8

Object getInt8()

Gets a signed 8-bit integer at the specified byte offset from the start of the view.

Parameters

offset

The offset, in byte, from the start of the view where to read the data.

Exceptions thrown

INDEX_SIZE_ERR

The byteOffset is set such as it would read beyond the end of the view

getUint16

int getUint16(int byteOffset)

getUint16

int getUint16(int byteOffset,
            boolean littleEndian)

getUint32

int getUint32(int byteOffset)

getUint32

int getUint32(int byteOffset,
            boolean littleEndian)

getUint8

Object getUint8()

Gets an unsigned 8-bit integer at the specified byte offset from the start of the view.

Parameters

offset

The offset, in byte, from the start of the view where to read the data.

INDEX_SIZE_ERR

The byteOffset is set such as it would read beyond the end of the view

setFloat32

void setFloat32(int byteOffset,
              float value)

setFloat32

void setFloat32(int byteOffset,
              float value,
              boolean littleEndian)

setFloat64

void setFloat64(int byteOffset,
              double value)

setFloat64

void setFloat64(int byteOffset,
              double value,
              boolean littleEndian)

setInt16

void setInt16(int byteOffset,
            short value)

setInt16

void setInt16(int byteOffset,
            short value,
            boolean littleEndian)

setInt32

void setInt32(int byteOffset,
            int value)

setInt32

void setInt32(int byteOffset,
            int value,
            boolean littleEndian)

setInt8

void setInt8()

setUint16

void setUint16(int byteOffset,
             int value)

setUint16

void setUint16(int byteOffset,
             int value,
             boolean littleEndian)

setUint32

void setUint32(int byteOffset,
             int value)

setUint32

void setUint32(int byteOffset,
             int value,
             boolean littleEndian)

setUint8

void setUint8()