Disabled external gits
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cs440-acg/ext/openexr/OpenEXR/exrenvmap/readInputImage.cpp
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cs440-acg/ext/openexr/OpenEXR/exrenvmap/readInputImage.cpp
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///////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2007, 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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// function readInputImage() --
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// reads an image file and constructs an EnvMapImage object
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//
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//-----------------------------------------------------------------------------
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#include <makeCubeMap.h>
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#include <ImfRgbaFile.h>
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#include <ImfStandardAttributes.h>
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#include <EnvmapImage.h>
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#include "Iex.h"
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#include "IexMacros.h"
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#include <iostream>
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#include <string>
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#include <string.h>
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#include "namespaceAlias.h"
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using namespace IMF;
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using namespace std;
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using namespace IMATH;
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namespace {
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void
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readSingleImage (const char inFileName[],
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float padTop,
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float padBottom,
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Envmap overrideType,
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bool verbose,
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EnvmapImage &image,
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Header &header,
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RgbaChannels &channels)
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{
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//
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// Read the input image, and if necessary,
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// pad the image at the top and bottom.
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//
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RgbaInputFile in (inFileName);
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if (verbose)
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cout << "reading file " << inFileName << endl;
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header = in.header();
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channels = in.channels();
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Envmap type = ENVMAP_LATLONG;
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if (hasEnvmap (in.header()))
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type = envmap (in.header());
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if (overrideType == ENVMAP_LATLONG ||
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overrideType == ENVMAP_CUBE)
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{
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type = overrideType;
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addEnvmap (header, overrideType);
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}
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const Box2i &dw = in.dataWindow();
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int w = dw.max.x - dw.min.x + 1;
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int h = dw.max.y - dw.min.y + 1;
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int pt = 0;
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int pb = 0;
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if (type == ENVMAP_LATLONG)
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{
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pt = int (padTop * h + 0.5f);
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pb = int (padBottom * h + 0.5f);
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}
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Box2i paddedDw (V2i (dw.min.x, dw.min.y - pt),
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V2i (dw.max.x, dw.max.y + pb));
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image.resize (type, paddedDw);
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Array2D<Rgba> &pixels = image.pixels();
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in.setFrameBuffer (&pixels[-paddedDw.min.y][-paddedDw.min.x], 1, w);
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in.readPixels (dw.min.y, dw.max.y);
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for (int y = 0; y < pt; ++y)
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for (int x = 0; x < w; ++x)
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pixels[y][x] = pixels[pt][x];
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for (int y = h + pt; y < h + pt + pb; ++y)
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{
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for (int x = 0; x < w; ++x)
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pixels[y][x] = pixels[h + pt - 1][x];
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}
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}
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void
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readSixImages (const char inFileName[],
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bool verbose,
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EnvmapImage &image,
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Header &header,
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RgbaChannels &channels)
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{
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//
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// Generate six file names by replacing the first '%' character in
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// inFileName with +X, -X, ... -Z. Interpreting the corresponding
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// image files as the six sides of a cube, assembe a single cube-
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// face map image.
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//
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static const char *faceNames[] =
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{"+X", "-X", "+Y", "-Y", "+Z", "-Z"};
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size_t pos = strchr (inFileName, '%') - inFileName;
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string name = string(inFileName).replace (pos, 1, faceNames[0]);
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Box2i dw;
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int w, h;
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{
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RgbaInputFile in (name.c_str());
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if (verbose)
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cout << "reading cube face size from file " << name << endl;
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dw = in.dataWindow();
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w = dw.max.x - dw.min.x + 1;
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h = dw.max.y - dw.min.y + 1;
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if (w != h)
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{
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THROW (IEX::InputExc,
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"Cube face image " << name << " is not square.");
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}
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header = in.header();
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channels = in.channels();
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addEnvmap (header, ENVMAP_CUBE);
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}
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const Box2i imageDw (V2i (0, 0), V2i (w - 1, 6 * h - 1));
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image.resize (ENVMAP_CUBE, imageDw);
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Rgba *pixels = &(image.pixels()[0][0]);
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for (int i = 0; i < 6; ++i)
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{
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string name = string(inFileName).replace (pos, 1, faceNames[i]);
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RgbaInputFile in (name.c_str());
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if (verbose)
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cout << "reading file " << name << endl;
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if (in.dataWindow() != dw)
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{
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THROW (IEX::InputExc,
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"The data window of cube face " << name << " differs "
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"from the data window of other cube faces.");
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}
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in.setFrameBuffer (pixels - dw.min.x - dw.min.y * w, 1, w);
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in.readPixels (dw.min.y, dw.max.y);
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pixels += w * h;
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}
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}
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} // namespace
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void
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readInputImage (const char inFileName[],
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float padTop,
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float padBottom,
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Envmap overrideType,
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bool verbose,
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EnvmapImage &image,
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Header &header,
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RgbaChannels &channels)
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{
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if (strchr (inFileName, '%'))
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{
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readSixImages (inFileName,
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verbose,
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image,
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header,
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channels);
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}
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else
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{
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readSingleImage (inFileName,
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padTop,
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padBottom,
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overrideType,
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verbose,
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image,
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header,
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channels);
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}
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}
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