1///////////////////////////////////////////////////////////////////////////
2//
3// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
4// Digital Ltd. LLC
5//
6// All rights reserved.
7//
8// Redistribution and use in source and binary forms, with or without
9// modification, are permitted provided that the following conditions are
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12// notice, this list of conditions and the following disclaimer.
13// * Redistributions in binary form must reproduce the above
14// copyright notice, this list of conditions and the following disclaimer
15// in the documentation and/or other materials provided with the
16// distribution.
17// * Neither the name of Industrial Light & Magic nor the names of
18// its contributors may be used to endorse or promote products derived
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20//
21// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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32//
33///////////////////////////////////////////////////////////////////////////
34
35
36#ifndef INCLUDED_IMF_RGBA_H
37#define INCLUDED_IMF_RGBA_H
38
39//-----------------------------------------------------------------------------
40//
41// class Rgba
42//
43//-----------------------------------------------------------------------------
44
45#include "half.h"
46#include "ImfNamespace.h"
47
48OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER
49
50
51//
52// RGBA pixel
53//
54
55struct Rgba
56{
57 half r;
58 half g;
59 half b;
60 half a;
61
62 Rgba () {}
63 Rgba (half r, half g, half b, half a = 1.f): r (r), g (g), b (b), a (a) {}
64
65 Rgba & operator = (const Rgba &other)
66 {
67 r = other.r;
68 g = other.g;
69 b = other.b;
70 a = other.a;
71
72 return *this;
73 }
74};
75
76
77//
78// Channels in an RGBA file
79//
80
81enum RgbaChannels
82{
83 WRITE_R = 0x01, // Red
84 WRITE_G = 0x02, // Green
85 WRITE_B = 0x04, // Blue
86 WRITE_A = 0x08, // Alpha
87
88 WRITE_Y = 0x10, // Luminance, for black-and-white images,
89 // or in combination with chroma
90
91 WRITE_C = 0x20, // Chroma (two subsampled channels, RY and BY,
92 // supported only for scanline-based files)
93
94 WRITE_RGB = 0x07, // Red, green, blue
95 WRITE_RGBA = 0x0f, // Red, green, blue, alpha
96
97 WRITE_YC = 0x30, // Luminance, chroma
98 WRITE_YA = 0x18, // Luminance, alpha
99 WRITE_YCA = 0x38 // Luminance, chroma, alpha
100};
101
102
103OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT
104
105
106
107
108
109#endif
110