Constants' Group FloatingPointBitmapFormat

Overview

Module

Use

Devguide

Index

Constants

Constants' Details

:: com :: sun :: star :: rendering ::

unpublished

constants group FloatingPointBitmapFormat

Description

This structure describes format of a floating point bitmap.

The difference between chunky and planar layout lies in the way how color channels are interleaved. For a chunky format, all channel data for a single pixel lies consecutively in memory. For a planar layout, the first channel of all pixel is stored consecutive, followed by the second channel, and so forth.

Since

OOo 2.0.0

Constants
CHUNKY_HALFFLOAT	Half-float format, with chunky layout.
PLANES_HALFFLOAT	Half-float format, with plane layout.
CHUNKY_FLOAT	IEEE float format, with chunky layout.
PLANES_FLOAT	IEEE float format, with plane layout.
CHUNKY_DOUBLE	IEEE double format, with chunky layout.
PLANES_DOUBLE	IEEE double format, with chunky layout.

Constants' Details

CHUNKY_HALFFLOAT

const byte CHUNKY_HALFFLOAT =0; Description Half-float format, with chunky layout. The color components are stored in the half-float format, i.e. in a 16 bit value, with 5 bit exponent, 10 bit mantissa and a sign bit. The bits of each value are stored consecutive in memory.

PLANES_HALFFLOAT

const byte PLANES_HALFFLOAT =1; Description Half-float format, with plane layout. The color components are stored in the half-float format, i.e. in a 16 bit value, with 5 bit exponent, 10 bit mantissa and a sign bit. For multi-channel Bitmaps, the pixel of the first color channel are stored consecutively, follow by the second channel and so forth.

CHUNKY_FLOAT

const byte CHUNKY_FLOAT =2; Description IEEE float format, with chunky layout. The color components are stored in the IEEE single-precision floating point format, i.e. in a 32 bit value, with 8 bit exponent, 23 bit mantissa and a sign bit. The bits of each value are stored consecutive in memory.

PLANES_FLOAT

const byte PLANES_FLOAT =3; Description IEEE float format, with plane layout. The color components are stored in the IEEE single-precision floating point format, i.e. in a 32 bit value, with 8 bit exponent, 23 bit mantissa and a sign bit. For multi-channel Bitmaps, the pixel of the first color channel are stored consecutively, follow by the second channel and so forth.

CHUNKY_DOUBLE

const byte CHUNKY_DOUBLE =4; Description IEEE double format, with chunky layout. The color components are stored in the IEEE double-precision floating point format, i.e. in a 64 bit value, with 16 bit exponent, 47 bit mantissa and a sign bit. The bits of each value are stored consecutive in memory.

PLANES_DOUBLE

const byte PLANES_DOUBLE =5; Description IEEE double format, with chunky layout. The color components are stored in the IEEE double-precision floating point format, i.e. in a 64 bit value, with 16 bit exponent, 47 bit mantissa and a sign bit. For multi-channel Bitmaps, the pixel of the first color channel are stored consecutively, follow by the second channel and so forth.

Top of Page