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
10// met:
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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
19// from this software without specific prior written permission.
20//
21// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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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
47namespace Imf {
48
49
50//
51// RGBA pixel
52//
53
54struct Rgba
55{
56    half	r;
57    half	g;
58    half	b;
59    half	a;
60
61    Rgba () {}
62    Rgba (half r, half g, half b, half a = 1.f): r (r), g (g), b (b), a (a) {}
63
64    Rgba & operator = (const Rgba &other)
65    {
66    	r = other.r;
67    	g = other.g;
68    	b = other.b;
69    	a = other.a;
70
71    	return *this;
72    }
73};
74
75
76//
77// Channels in an RGBA file
78//
79
80enum RgbaChannels
81{
82    WRITE_R	= 0x01,		// Red
83    WRITE_G	= 0x02,		// Green
84    WRITE_B	= 0x04,		// Blue
85    WRITE_A	= 0x08,		// Alpha
86
87    WRITE_Y	= 0x10,		// Luminance, for black-and-white images,
88    				// or in combination with chroma
89
90    WRITE_C	= 0x20,		// Chroma (two subsampled channels, RY and BY,
91    				// supported only for scanline-based files)
92
93    WRITE_RGB	= 0x07,		// Red, green, blue
94    WRITE_RGBA	= 0x0f,		// Red, green, blue, alpha
95
96    WRITE_YC	= 0x30,		// Luminance, chroma
97    WRITE_YA	= 0x18,		// Luminance, alpha
98    WRITE_YCA	= 0x38		// Luminance, chroma, alpha
99};
100
101
102} // namespace Imf
103
104#endif
105