1 /* 2 * Copyright (C) 2009 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef ColorSpace_h 27 #define ColorSpace_h 28 29 #include "platform/PlatformExport.h" 30 #include "platform/graphics/Color.h" 31 32 namespace blink { 33 34 enum ColorSpace { 35 ColorSpaceDeviceRGB, 36 ColorSpaceSRGB, 37 ColorSpaceLinearRGB 38 }; 39 40 namespace ColorSpaceUtilities { 41 42 // Get a pointer to a 8-bit lookup table that will convert color components 43 // in the |srcColorSpace| to the |dstColorSpace|. 44 // If the conversion cannot be performed, or is a no-op (identity transform), 45 // then 0 is returned. 46 // (Note that a round-trip - f(B,A)[f(A,B)[x]] - is not lossless in general.) 47 const uint8_t* getConversionLUT(ColorSpace dstColorSpace, ColorSpace srcColorSpace = ColorSpaceDeviceRGB); 48 49 // Convert a Color assumed to be in the |srcColorSpace| into the |dstColorSpace|. 50 Color convertColor(const Color& srcColor, ColorSpace dstColorSpace, ColorSpace srcColorSpace = ColorSpaceDeviceRGB); 51 52 } // namespace ColorSpaceUtilities 53 54 } // namespace blink 55 56 #endif // ColorSpace_h 57
