xref: /aoo4110/main/offapi/com/sun/star/rendering/IntegerBitmapLayout.idl (revision b1cdbd2c)

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#ifndef __com_sun_star_rendering_IntegerBitmapLayout_idl__
#define __com_sun_star_rendering_IntegerBitmapLayout_idl__

#ifndef __com_sun_star_rendering_XIntegerBitmapColorSpace_idl__
#include <com/sun/star/rendering/XIntegerBitmapColorSpace.idl>
#endif
#ifndef __com_sun_star_rendering_XBitmapPalette_idl__
#include <com/sun/star/rendering/XBitmapPalette.idl>
#endif

module com { module sun { module star { module rendering {

/** This structure describes the memory layout of a bitmap having
    integer color channels.<p>

    This structure collects all necessary information to describe the
    memory layout of a bitmap having integer color channels<p>

    @since OpenOffice 2.0
 */
struct IntegerBitmapLayout
{
    /** Number of scanlines for this bitmap.

    	This value must not be negative
     */
    long				     ScanLines;

    /** Number of data bytes per scanline.

    	This value must not be negative
     */
    long 				     ScanLineBytes;

    /** Byte offset between the start of two consecutive scanlines.

    	This value is permitted to be negative, denoting a bitmap
    	whose content is flipped at the x axis.
     */
    long				     ScanLineStride;

    /** Byte offset between the start of two consecutive planes.

    	This value is permitted to be negative. If this value is zero,
    	the bitmap is assumed to be in chunky format, otherwise it is
    	assumed to be planar.  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.<p>
     */
    long				     PlaneStride;

    /** Color space the bitmap colors shall be interpreted within.<p>

        Note that the actual pixel layout is specified at the color
        space. If this layout describes a palette bitmap format, this
        color space describes the index format (plus maybe an extra
        alpha channel). The palette itself references another color
        space, which describes the layout of the palette entries.

        @see XBitmapPalette
     */
    XIntegerBitmapColorSpace ColorSpace;

    /** This member determines whether the bitmap data are actually
        indices into a color map.<p>

        When set to the nil reference, the bitmap data is assumed to
        contain direct color values (to be interpreted according to
        the associated color space). If this member references a valid
        palette, one of the pixel components as returned by the color
        space referenced from the <member>ColorSpace</member> is
        required to be of type
        <member>ColorComponentTag::INDEX</member>. That component is
        then used to index the palette.<p>
     */
    XBitmapPalette		     Palette;

    /** This member determines the bit order (only relevant if a pixel
        uses less than 8 bits, of course).<p>

        When <TRUE/>, this member denotes that the leftmost pixel from
        an 8 bit amount of pixel data consists of the bits starting
        with the most significant bit. When <FALSE/>, it's starting
        with the least significant bit.<p>

        Example: for a 1bpp bitmap, each pixel is represented by
        exactly one bit. If this member is <TRUE/>, the first pixel is
        the MSB of the first byte, and the eighth pixel is the LSB of
        the first byte. If this member is <FALSE/>, it's just the
        opposite.
     */
    boolean                  IsMsbFirst;

};

}; }; }; };

#endif