138 lines
4.5 KiB
C++
138 lines
4.5 KiB
C++
///////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2014, Industrial Light & Magic, a division of Lucas
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// Digital Ltd. LLC
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Industrial Light & Magic nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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///////////////////////////////////////////////////////////////////////////
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//----------------------------------------------------------------------------
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//
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// class ImageChannel
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//
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//----------------------------------------------------------------------------
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#include "ImfImageChannel.h"
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#include "ImfImageLevel.h"
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#include <Iex.h>
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using namespace IMATH_NAMESPACE;
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using namespace IEX_NAMESPACE;
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using namespace std;
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OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER
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ImageChannel::ImageChannel
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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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:
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_level (level),
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_xSampling (xSampling),
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_ySampling (ySampling),
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_pLinear (pLinear),
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_pixelsPerRow (0),
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_pixelsPerColumn (0),
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_numPixels (0)
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{
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// empty
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}
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ImageChannel::~ImageChannel ()
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{
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// empty
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}
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Channel
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ImageChannel::channel () const
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{
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return Channel (pixelType(), xSampling(), ySampling(), pLinear());
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}
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void
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ImageChannel::resize ()
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{
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const Box2i& dataWindow = level().dataWindow();
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if (dataWindow.min.x % _xSampling || dataWindow.min.y % _ySampling)
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{
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throw ArgExc ("The minimum x and y coordinates of the data window "
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"of an image level must be multiples of the x and y "
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"subsampling factors of all channels in the image.");
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}
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int width = dataWindow.max.x - dataWindow.min.x + 1;
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int height = dataWindow.max.y - dataWindow.min.y + 1;
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if (width % _xSampling || height % _ySampling)
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{
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throw ArgExc ("The width and height of the data window of an image "
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"level must be multiples of the x and y subsampling "
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"factors of all channels in the image.");
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}
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_pixelsPerRow = width / _xSampling;
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_pixelsPerColumn = height / _ySampling;
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_numPixels = _pixelsPerRow * _pixelsPerColumn;
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}
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void
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ImageChannel::boundsCheck (int x, int y) const
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{
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const Box2i &dataWindow = level().dataWindow();
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if (x < dataWindow.min.x || x > dataWindow.max.x ||
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y < dataWindow.min.y || y > dataWindow.max.y)
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{
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THROW (ArgExc,
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"Attempt to access a pixel at location "
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"(" << x << ", " << y << ") in an image whose data window is "
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"(" << dataWindow.min.x << ", " << dataWindow.min.y << ") - "
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"(" << dataWindow.max.x << ", " << dataWindow.max.y << ").");
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}
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if (x % _xSampling || y % _ySampling)
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{
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THROW (ArgExc,
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"Attempt to access a pixel at location "
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"(" << x << ", " << y << ") in a channel whose x and y sampling "
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"rates are " << _xSampling << " and " << _ySampling << ". The "
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"pixel coordinates are not divisible by the sampling rates.");
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}
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}
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OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT
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