mirror of https://github.com/etlegacy/EasyGen.git
263 lines
6.8 KiB
C++
263 lines
6.8 KiB
C++
///////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2002, 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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#include <ImfOutputFile.h>
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#include <ImfInputFile.h>
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#include <ImfChannelList.h>
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#include <ImfArray.h>
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#include "half.h"
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#include <stdio.h>
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#include <assert.h>
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#include "tmpDir.h"
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using namespace OPENEXR_IMF_NAMESPACE;
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using namespace std;
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using namespace IMATH_NAMESPACE;
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namespace {
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void
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fillPixels (Array2D<half> &ph1,
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Array2D<half> &ph2,
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int width, int height)
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{
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for (int y = 0; y < height; ++y)
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{
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for (int x = 0; x < width; ++x)
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{
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ph1[y][x] = x % 10 + 10 * (y % 17);
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ph2[y][x] = x % 11 + 11 * (y % 15);
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}
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}
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}
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void
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writeRead (const Array2D<half> &h1out,
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const Array2D<half> &h2out,
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const char fileName[],
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int width,
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int height)
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{
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//
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// Write an image file with three channels, H1, H2 and H3.
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// Our frame buffer contains pixel data only for H1 and H2;
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// the file's H3 channel should be filled with zeroes.
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//
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Header hdr (width, height);
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hdr.channels().insert ("H1", // name
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Channel (HALF, // type
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1, // xSampling
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1) // ySampling
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);
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hdr.channels().insert ("H2", // name
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Channel (HALF, // type
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1, // xSampling
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1) // ySampling
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);
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hdr.channels().insert ("H3", // name
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Channel (HALF, // type
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1, // xSampling
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1) // ySampling
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);
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{
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FrameBuffer fb;
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fb.insert ("H1", // name
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Slice (HALF, // type
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(char *) &h1out[0][0], // base
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sizeof (h1out[0][0]), // xStride
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sizeof (h1out[0][0]) * width, // yStride
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1, // xSampling
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1) // ySampling
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);
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fb.insert ("H2", // name
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Slice (HALF, // type
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(char *) &h2out[0][0], // base
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sizeof (h2out[0][0]), // xStride
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sizeof (h2out[0][0]) * width, // yStride
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1, // xSampling
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1) // ySampling
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);
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cout << "writing" << flush;
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remove (fileName);
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OutputFile out (fileName, hdr);
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out.setFrameBuffer (fb);
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out.writePixels (height);
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}
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//
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// Read the image back from the file. Our frame buffer now
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// contains space for the three channels, H1, H3 and H4.
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// H1 and H3 should be read back from the file (but H3
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// should contain only zeroes), and H4 should be filled
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// with a default value, 3.0, because the file contains
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// no data for it. The file's H2 channel should be ignored.
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//
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{
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cout << " reading" << flush;
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InputFile in (fileName);
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const Box2i &dw = in.header().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 dx = dw.min.x;
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int dy = dw.min.y;
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Array2D<half> h1in (h, w);
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Array2D<half> h3in (h, w);
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Array2D<half> h4in (h, w);
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FrameBuffer fb;
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fb.insert ("H1", // name
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Slice (HALF, // type
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(char *) &h1in[-dy][-dx], // base
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sizeof (h1in[0][0]), // xStride
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sizeof (h1in[0][0]) * w, // yStride
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1, // xSampling
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1, // ySampling
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3.0) // fillValue
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);
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fb.insert ("H3", // name
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Slice (HALF, // type
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(char *) &h3in[-dy][-dx], // base
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sizeof (h3in[0][0]), // xStride
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sizeof (h3in[0][0]) * w, // yStride
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1, // xSampling
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1, // ySampling
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3.0) // fillValue
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);
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fb.insert ("H4", // name
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Slice (HALF, // type
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(char *) &h4in[-dy][-dx], // base
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sizeof (h4in[0][0]), // xStride
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sizeof (h4in[0][0]) * w, // yStride
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1, // xSampling
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1, // ySampling
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3.0) // fillValue
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);
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in.setFrameBuffer (fb);
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in.readPixels (dw.min.y, dw.max.y);
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cout << " comparing" << flush;
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assert (in.header().displayWindow() == hdr.displayWindow());
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assert (in.header().dataWindow() == hdr.dataWindow());
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assert (in.header().pixelAspectRatio() == hdr.pixelAspectRatio());
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assert (in.header().screenWindowCenter() == hdr.screenWindowCenter());
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assert (in.header().screenWindowWidth() == hdr.screenWindowWidth());
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assert (in.header().lineOrder() == hdr.lineOrder());
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assert (in.header().compression() == hdr.compression());
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ChannelList::ConstIterator hi = hdr.channels().begin();
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ChannelList::ConstIterator ii = in.header().channels().begin();
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while (hi != hdr.channels().end())
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{
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assert (!strcmp (hi.name(), ii.name()));
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assert (hi.channel().type == ii.channel().type);
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assert (hi.channel().xSampling == ii.channel().xSampling);
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assert (hi.channel().ySampling == ii.channel().ySampling);
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++hi;
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++ii;
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}
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assert (ii == in.header().channels().end());
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for (int y = 0; y < h; ++y)
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{
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for (int x = 0; x < w; ++x)
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{
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assert (h1in[y][x] == h1out[y][x]);
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assert (h3in[y][x] == 0.0);
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assert (h4in[y][x] == 3.0);
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}
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}
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}
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remove (fileName);
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cout << endl;
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}
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} // namespace
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void
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testChannels ()
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{
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try
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{
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cout << "Testing filling of missing channels" << endl;
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const int W = 117;
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const int H = 97;
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Array2D<half> ph1 (H, W);
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Array2D<half> ph2 (H, W);
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fillPixels (ph1, ph2, W, H);
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const char *filename = IMF_TMP_DIR "imf_test_channels.exr";
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writeRead (ph1, ph2, filename, W, H);
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cout << "ok\n" << endl;
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}
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catch (const std::exception &e)
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{
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cerr << "ERROR -- caught exception: " << e.what() << endl;
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assert (false);
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}
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}
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