79 lines
3.3 KiB
Text
79 lines
3.3 KiB
Text
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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module com { module sun { module star { module rendering {
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/** Specialized interface for bitmaps containing half floats as their
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color components. Half floats are 16 bit wide, and some high-end
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GPUs already have them as supported frame buffer format. In
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contrast to XHalfFloatBitmap, this interface only
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permits read-only access.<p>
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Use this interface for e.g. bitmaps that are calculated
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on-the-fly, or that are pure functional, and thus cannot be
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modified.<p>
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If you get passed an instance of
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XHalfFloatReadOnlyBitmap that also supports the
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XVolatileBitmap interface, things become a bit more
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complicated. When reading data, one has to check for both
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VolatileContentDestroyedException and mismatching
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FloatingPointBitmapLayout return values. If either of them
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occurs, the whole bitmap read operation should be repeated.<p>
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*/
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interface XHalfFloatReadOnlyBitmap : XBitmap
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{
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/** Query the raw data of this bitmap.<p>
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Query the raw data of this bitmap, in the format as defined by
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getMemoryLayout(). With the given rectangle, a subset of the
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whole bitmap can be queried. When querying subsets of the
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bitmap, the same scanline padding takes place as when the
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whole bitmap is requested. Note: as we currently have no 16
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bit float UNO data type, the values are transported as 16 bit
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integers across the API (which requires casting on both
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sides).<p>
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@throws VolatileContentDestroyedException
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if the bitmap is volatile, and the content has been destroyed by the system.
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*/
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sequence<short> getData( [in] ::com::sun::star::geometry::IntegerRectangle2D rect )
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raises (com::sun::star::lang::IndexOutOfBoundsException,
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VolatileContentDestroyedException);
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/** Get a single pixel of the bitmap, returning its color
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value.<p>
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@throws VolatileContentDestroyedException
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if the bitmap is volatile, and the content has been destroyed by the system.
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*/
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sequence<short> getPixel( [in] ::com::sun::star::geometry::IntegerPoint2D pos )
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raises (com::sun::star::lang::IndexOutOfBoundsException,
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VolatileContentDestroyedException);
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/** Query the memory layout for this bitmap.<p>
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*/
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FloatingPointBitmapLayout getMemoryLayout();
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};
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}; }; }; };
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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