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///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2014, 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.
//
///////////////////////////////////////////////////////////////////////////
//----------------------------------------------------------------------------
//
// class ImageChannel
//
//----------------------------------------------------------------------------
#include "ImfImageChannel.h"
#include "ImfImageLevel.h"
#include <Iex.h>
using namespace IMATH_NAMESPACE;
using namespace IEX_NAMESPACE;
using namespace std;
OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER
ImageChannel::ImageChannel
(ImageLevel &level,
int xSampling,
int ySampling,
bool pLinear)
:
_level (level),
_xSampling (xSampling),
_ySampling (ySampling),
_pLinear (pLinear),
_pixelsPerRow (0),
_pixelsPerColumn (0),
_numPixels (0)
{
// empty
}
ImageChannel::~ImageChannel ()
{
// empty
}
Channel
ImageChannel::channel () const
{
return Channel (pixelType(), xSampling(), ySampling(), pLinear());
}
void
ImageChannel::resize ()
{
const Box2i& dataWindow = level().dataWindow();
if (dataWindow.min.x % _xSampling || dataWindow.min.y % _ySampling)
{
throw ArgExc ("The minimum x and y coordinates of the data window "
"of an image level must be multiples of the x and y "
"subsampling factors of all channels in the image.");
}
int width = dataWindow.max.x - dataWindow.min.x + 1;
int height = dataWindow.max.y - dataWindow.min.y + 1;
if (width % _xSampling || height % _ySampling)
{
throw ArgExc ("The width and height of the data window of an image "
"level must be multiples of the x and y subsampling "
"factors of all channels in the image.");
}
_pixelsPerRow = width / _xSampling;
_pixelsPerColumn = height / _ySampling;
_numPixels = _pixelsPerRow * _pixelsPerColumn;
}
void
ImageChannel::boundsCheck (int x, int y) const
{
const Box2i &dataWindow = level().dataWindow();
if (x < dataWindow.min.x || x > dataWindow.max.x ||
y < dataWindow.min.y || y > dataWindow.max.y)
{
THROW (ArgExc,
"Attempt to access a pixel at location "
"(" << x << ", " << y << ") in an image whose data window is "
"(" << dataWindow.min.x << ", " << dataWindow.min.y << ") - "
"(" << dataWindow.max.x << ", " << dataWindow.max.y << ").");
}
if (x % _xSampling || y % _ySampling)
{
THROW (ArgExc,
"Attempt to access a pixel at location "
"(" << x << ", " << y << ") in a channel whose x and y sampling "
"rates are " << _xSampling << " and " << _ySampling << ". The "
"pixel coordinates are not divisible by the sampling rates.");
}
}
OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT
|
