111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
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//
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// SPDX-License-Identifier: BSD-3-Clause
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// Copyright (c) Contributors to the OpenEXR Project.
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//
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#ifndef INCLUDED_IMF_IMAGE_CHANNEL_H
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#define INCLUDED_IMF_IMAGE_CHANNEL_H
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//----------------------------------------------------------------------------
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//
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// class ImageChannel
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//
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// For an explanation of images, levels and channels,
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// see the comments in header file Image.h.
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//
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//----------------------------------------------------------------------------
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#include "ImfUtilExport.h"
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#include "IexBaseExc.h"
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#include "ImfChannelList.h"
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#include "ImfFrameBuffer.h"
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#include "ImfPixelType.h"
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#include <ImathBox.h>
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#include <half.h>
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#include <cstring>
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#include <typeinfo>
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OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER
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class ImageLevel;
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//
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// Image channels:
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//
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// An image channel holds the pixel data for a single channel of one level
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// of an image. Separate classes for flat and deep channels are derived
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// from the ImageChannel base class.
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//
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class ImageLevel;
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class IMFUTIL_EXPORT_TYPE ImageChannel
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{
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public:
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//
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// The OpenEXR pixel type of this channel (HALF, FLOAT or UINT).
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//
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virtual PixelType pixelType () const = 0;
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//
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// Generate an OpenEXR channel for this image channel.
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//
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IMFUTIL_EXPORT
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Channel channel () const;
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//
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// Access to x and y sampling rates, "perceptually linear" flag,
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// and the number of pixels that are stored in this channel.
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//
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int xSampling () const { return _xSampling; }
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int ySampling () const { return _ySampling; }
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bool pLinear () const { return _pLinear; }
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int pixelsPerRow () const { return _pixelsPerRow; }
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int pixelsPerColumn () const { return _pixelsPerColumn; }
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size_t numPixels () const { return _numPixels; }
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//
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// Access to the image level to which this channel belongs.
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//
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ImageLevel& level () { return _level; }
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const ImageLevel& level () const { return _level; }
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protected:
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IMFUTIL_EXPORT
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ImageChannel (
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ImageLevel& level, int xSampling, int ySampling, bool pLinear);
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IMFUTIL_EXPORT
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virtual ~ImageChannel ();
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IMFUTIL_EXPORT
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virtual void resize ();
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IMFUTIL_EXPORT
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void boundsCheck (int x, int y) const;
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private:
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ImageChannel (const ImageChannel&) = delete;
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ImageChannel& operator= (const ImageChannel&) = delete;
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ImageChannel (ImageChannel&&) = delete;
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ImageChannel& operator= (ImageChannel&&) = delete;
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ImageLevel& _level;
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int _xSampling;
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int _ySampling;
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bool _pLinear;
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int _pixelsPerRow;
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int _pixelsPerColumn;
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size_t _numPixels;
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};
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OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT
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#endif
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