///////////////////////////////////////////////////////////////////////////

//

// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas

// Digital Ltd. LLC

// 

// All rights reserved.

// 

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

// *       Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

// *       Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

// *       Neither the name of Industrial Light & Magic nor the names of

// its contributors may be used to endorse or promote products derived

// from this software without specific prior written permission. 

// 

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//

///////////////////////////////////////////////////////////////////////////

#ifndef INCLUDED_IMF_RGBA_H

#define INCLUDED_IMF_RGBA_H

//-----------------------------------------------------------------------------

//

//	class Rgba

//

//-----------------------------------------------------------------------------

#include "half.h"

#include "ImfNamespace.h"

OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER

//

// RGBA pixel

//

struct Rgba

{

    half	r;

    half	g;

    half	b;

    half	a;

    Rgba () {}

    Rgba (half r, half g, half b, half a = 1.f): r (r), g (g), b (b), a (a) {}

    Rgba & operator = (const Rgba &other)

    {

    	r = other.r;

    	g = other.g;

    	b = other.b;

    	a = other.a;

    	return *this;

    }

};

//

// Channels in an RGBA file

//

enum RgbaChannels

{

    WRITE_R	= 0x01,		// Red

    WRITE_G	= 0x02,		// Green

    WRITE_B	= 0x04,		// Blue

    WRITE_A	= 0x08,		// Alpha

    WRITE_Y	= 0x10,		// Luminance, for black-and-white images,

    				// or in combination with chroma

    WRITE_C	= 0x20,		// Chroma (two subsampled channels, RY and BY,

    				// supported only for scanline-based files)

    WRITE_RGB	= 0x07,		// Red, green, blue

    WRITE_RGBA	= 0x0f,		// Red, green, blue, alpha

    WRITE_YC	= 0x30,		// Luminance, chroma

    WRITE_YA	= 0x18,		// Luminance, alpha

    WRITE_YCA	= 0x38		// Luminance, chroma, alpha

};

OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT

#endif