PBRT
/home/felix/UBC/projects/AdaptiveLightfieldSampling/pbrt_v2/src/3rdparty/openexr-1.7.0/ImfRgba.h
00001 
00002 //
00003 // Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
00004 // Digital Ltd. LLC
00005 // 
00006 // All rights reserved.
00007 // 
00008 // Redistribution and use in source and binary forms, with or without
00009 // modification, are permitted provided that the following conditions are
00010 // met:
00011 // *       Redistributions of source code must retain the above copyright
00012 // notice, this list of conditions and the following disclaimer.
00013 // *       Redistributions in binary form must reproduce the above
00014 // copyright notice, this list of conditions and the following disclaimer
00015 // in the documentation and/or other materials provided with the
00016 // distribution.
00017 // *       Neither the name of Industrial Light & Magic nor the names of
00018 // its contributors may be used to endorse or promote products derived
00019 // from this software without specific prior written permission. 
00020 // 
00021 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00022 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00023 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
00024 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
00025 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00027 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00028 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00029 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00030 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00031 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00032 //
00034 
00035 
00036 #ifndef INCLUDED_IMF_RGBA_H
00037 #define INCLUDED_IMF_RGBA_H
00038 
00039 //-----------------------------------------------------------------------------
00040 //
00041 //      class Rgba
00042 //
00043 //-----------------------------------------------------------------------------
00044 
00045 #include "half.h"
00046 
00047 namespace Imf {
00048 
00049 
00050 //
00051 // RGBA pixel
00052 //
00053 
00054 struct Rgba
00055 {
00056     half        r;
00057     half        g;
00058     half        b;
00059     half        a;
00060     
00061     Rgba () {}
00062     Rgba (half r, half g, half b, half a = 1.f): r (r), g (g), b (b), a (a) {}
00063 
00064     Rgba & operator = (const Rgba &other)
00065     {
00066         r = other.r;
00067         g = other.g;
00068         b = other.b;
00069         a = other.a;
00070 
00071         return *this;
00072     }
00073 };
00074 
00075 
00076 //
00077 // Channels in an RGBA file
00078 //
00079 
00080 enum RgbaChannels
00081 {
00082     WRITE_R     = 0x01,         // Red
00083     WRITE_G     = 0x02,         // Green
00084     WRITE_B     = 0x04,         // Blue
00085     WRITE_A     = 0x08,         // Alpha
00086 
00087     WRITE_Y     = 0x10,         // Luminance, for black-and-white images,
00088                                 // or in combination with chroma
00089 
00090     WRITE_C     = 0x20,         // Chroma (two subsampled channels, RY and BY,
00091                                 // supported only for scanline-based files)
00092 
00093     WRITE_RGB   = 0x07,         // Red, green, blue
00094     WRITE_RGBA  = 0x0f,         // Red, green, blue, alpha
00095 
00096     WRITE_YC    = 0x30,         // Luminance, chroma
00097     WRITE_YA    = 0x18,         // Luminance, alpha
00098     WRITE_YCA   = 0x38          // Luminance, chroma, alpha
00099 };
00100 
00101 
00102 } // namespace Imf
00103 
00104 #endif