148cdb363SAndrew Rist /************************************************************** 2cdf0e10cSrcweir * 348cdb363SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 448cdb363SAndrew Rist * or more contributor license agreements. See the NOTICE file 548cdb363SAndrew Rist * distributed with this work for additional information 648cdb363SAndrew Rist * regarding copyright ownership. The ASF licenses this file 748cdb363SAndrew Rist * to you under the Apache License, Version 2.0 (the 848cdb363SAndrew Rist * "License"); you may not use this file except in compliance 948cdb363SAndrew Rist * with the License. You may obtain a copy of the License at 10cdf0e10cSrcweir * 1148cdb363SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 12cdf0e10cSrcweir * 1348cdb363SAndrew Rist * Unless required by applicable law or agreed to in writing, 1448cdb363SAndrew Rist * software distributed under the License is distributed on an 1548cdb363SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 1648cdb363SAndrew Rist * KIND, either express or implied. See the License for the 1748cdb363SAndrew Rist * specific language governing permissions and limitations 1848cdb363SAndrew Rist * under the License. 19cdf0e10cSrcweir * 2048cdb363SAndrew Rist *************************************************************/ 2148cdb363SAndrew Rist 22cdf0e10cSrcweir #ifndef INCLUDED_BASEBMP_INTCONVERSION_HXX 23cdf0e10cSrcweir #define INCLUDED_BASEBMP_INTCONVERSION_HXX 24cdf0e10cSrcweir 25cdf0e10cSrcweir #include <vigra/rgbvalue.hxx> 26cdf0e10cSrcweir #include <functional> 27cdf0e10cSrcweir 28cdf0e10cSrcweir namespace basebmp 29cdf0e10cSrcweir { 30cdf0e10cSrcweir // metafunctions to retrieve correct POD from/to basebmp::Color 31cdf0e10cSrcweir //------------------------------------------------------------------------ 32cdf0e10cSrcweir 33*06db55caSmseidel // type-safe conversion from RgbValue to packed int32 34cdf0e10cSrcweir template< class RgbVal > struct UInt32FromRgbValue 35cdf0e10cSrcweir { operator ()basebmp::UInt32FromRgbValue36cdf0e10cSrcweir sal_uInt32 operator()( RgbVal const& c ) const 37cdf0e10cSrcweir { 38cdf0e10cSrcweir return (c[0] << 16) | (c[1] << 8) | c[2]; 39cdf0e10cSrcweir } 40cdf0e10cSrcweir }; 41cdf0e10cSrcweir 42*06db55caSmseidel // type-safe conversion from packed int32 to RgbValue 43cdf0e10cSrcweir template< class RgbVal > struct RgbValueFromUInt32 44cdf0e10cSrcweir { operator ()basebmp::RgbValueFromUInt3245cdf0e10cSrcweir RgbVal operator()( sal_uInt32 c ) const 46cdf0e10cSrcweir { 47cdf0e10cSrcweir return RgbVal((c >> 16) & 0xFF, 48cdf0e10cSrcweir (c >> 8) & 0xFF, 49cdf0e10cSrcweir c & 0xFF); 50cdf0e10cSrcweir } 51cdf0e10cSrcweir }; 52cdf0e10cSrcweir 53*06db55caSmseidel // Get converter from given data type to sal_uInt32 54cdf0e10cSrcweir template< typename DataType > struct uInt32Converter 55cdf0e10cSrcweir { 56cdf0e10cSrcweir typedef std::identity<DataType> to; 57cdf0e10cSrcweir typedef std::identity<DataType> from; 58cdf0e10cSrcweir }; 59cdf0e10cSrcweir template< unsigned int RedIndex, 60cdf0e10cSrcweir unsigned int GreenIndex, 61cdf0e10cSrcweir unsigned int BlueIndex > struct uInt32Converter< 62cdf0e10cSrcweir vigra::RGBValue< sal_uInt8, 63cdf0e10cSrcweir RedIndex, 64cdf0e10cSrcweir GreenIndex, 65cdf0e10cSrcweir BlueIndex > > 66cdf0e10cSrcweir { 67cdf0e10cSrcweir typedef UInt32FromRgbValue< 68cdf0e10cSrcweir vigra::RGBValue< sal_uInt8, 69cdf0e10cSrcweir RedIndex, 70cdf0e10cSrcweir GreenIndex, 71cdf0e10cSrcweir BlueIndex > > 72cdf0e10cSrcweir to; 73cdf0e10cSrcweir typedef RgbValueFromUInt32< 74cdf0e10cSrcweir vigra::RGBValue< sal_uInt8, 75cdf0e10cSrcweir RedIndex, 76cdf0e10cSrcweir GreenIndex, 77cdf0e10cSrcweir BlueIndex > > 78cdf0e10cSrcweir from; 79cdf0e10cSrcweir }; 80cdf0e10cSrcweir } 81cdf0e10cSrcweir 82cdf0e10cSrcweir #endif /* INCLUDED_BASEBMP_INTCONVERSION_HXX */ 83*06db55caSmseidel 84*06db55caSmseidel /* vim: set noet sw=4 ts=4: */ 85