1*48cdb363SAndrew Rist /************************************************************** 2cdf0e10cSrcweir * 3*48cdb363SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 4*48cdb363SAndrew Rist * or more contributor license agreements. See the NOTICE file 5*48cdb363SAndrew Rist * distributed with this work for additional information 6*48cdb363SAndrew Rist * regarding copyright ownership. The ASF licenses this file 7*48cdb363SAndrew Rist * to you under the Apache License, Version 2.0 (the 8*48cdb363SAndrew Rist * "License"); you may not use this file except in compliance 9*48cdb363SAndrew Rist * with the License. You may obtain a copy of the License at 10*48cdb363SAndrew Rist * 11*48cdb363SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 12*48cdb363SAndrew Rist * 13*48cdb363SAndrew Rist * Unless required by applicable law or agreed to in writing, 14*48cdb363SAndrew Rist * software distributed under the License is distributed on an 15*48cdb363SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*48cdb363SAndrew Rist * KIND, either express or implied. See the License for the 17*48cdb363SAndrew Rist * specific language governing permissions and limitations 18*48cdb363SAndrew Rist * under the License. 19*48cdb363SAndrew Rist * 20*48cdb363SAndrew Rist *************************************************************/ 21*48cdb363SAndrew Rist 22*48cdb363SAndrew Rist 23cdf0e10cSrcweir 24cdf0e10cSrcweir #ifndef INCLUDED_BASEBMP_INTCONVERSION_HXX 25cdf0e10cSrcweir #define INCLUDED_BASEBMP_INTCONVERSION_HXX 26cdf0e10cSrcweir 27cdf0e10cSrcweir #include <vigra/rgbvalue.hxx> 28cdf0e10cSrcweir #include <functional> 29cdf0e10cSrcweir 30cdf0e10cSrcweir namespace basebmp 31cdf0e10cSrcweir { 32cdf0e10cSrcweir // metafunctions to retrieve correct POD from/to basebmp::Color 33cdf0e10cSrcweir //------------------------------------------------------------------------ 34cdf0e10cSrcweir 35cdf0e10cSrcweir /// type-safe conversion from RgbValue to packed int32 36cdf0e10cSrcweir template< class RgbVal > struct UInt32FromRgbValue 37cdf0e10cSrcweir { operator ()basebmp::UInt32FromRgbValue38cdf0e10cSrcweir sal_uInt32 operator()( RgbVal const& c ) const 39cdf0e10cSrcweir { 40cdf0e10cSrcweir return (c[0] << 16) | (c[1] << 8) | c[2]; 41cdf0e10cSrcweir } 42cdf0e10cSrcweir }; 43cdf0e10cSrcweir 44cdf0e10cSrcweir /// type-safe conversion from packed int32 to RgbValue 45cdf0e10cSrcweir template< class RgbVal > struct RgbValueFromUInt32 46cdf0e10cSrcweir { operator ()basebmp::RgbValueFromUInt3247cdf0e10cSrcweir RgbVal operator()( sal_uInt32 c ) const 48cdf0e10cSrcweir { 49cdf0e10cSrcweir return RgbVal((c >> 16) & 0xFF, 50cdf0e10cSrcweir (c >> 8) & 0xFF, 51cdf0e10cSrcweir c & 0xFF); 52cdf0e10cSrcweir } 53cdf0e10cSrcweir }; 54cdf0e10cSrcweir 55cdf0e10cSrcweir /// Get converter from given data type to sal_uInt32 56cdf0e10cSrcweir template< typename DataType > struct uInt32Converter 57cdf0e10cSrcweir { 58cdf0e10cSrcweir typedef std::identity<DataType> to; 59cdf0e10cSrcweir typedef std::identity<DataType> from; 60cdf0e10cSrcweir }; 61cdf0e10cSrcweir template< unsigned int RedIndex, 62cdf0e10cSrcweir unsigned int GreenIndex, 63cdf0e10cSrcweir unsigned int BlueIndex > struct uInt32Converter< 64cdf0e10cSrcweir vigra::RGBValue< sal_uInt8, 65cdf0e10cSrcweir RedIndex, 66cdf0e10cSrcweir GreenIndex, 67cdf0e10cSrcweir BlueIndex > > 68cdf0e10cSrcweir { 69cdf0e10cSrcweir typedef UInt32FromRgbValue< 70cdf0e10cSrcweir vigra::RGBValue< sal_uInt8, 71cdf0e10cSrcweir RedIndex, 72cdf0e10cSrcweir GreenIndex, 73cdf0e10cSrcweir BlueIndex > > 74cdf0e10cSrcweir to; 75cdf0e10cSrcweir typedef RgbValueFromUInt32< 76cdf0e10cSrcweir vigra::RGBValue< sal_uInt8, 77cdf0e10cSrcweir RedIndex, 78cdf0e10cSrcweir GreenIndex, 79cdf0e10cSrcweir BlueIndex > > 80cdf0e10cSrcweir from; 81cdf0e10cSrcweir }; 82cdf0e10cSrcweir } 83cdf0e10cSrcweir 84cdf0e10cSrcweir #endif /* INCLUDED_BASEBMP_INTCONVERSION_HXX */ 85