mirror of https://github.com/etlegacy/EasyGen.git
297 lines
10 KiB
C++
297 lines
10 KiB
C++
///////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2003, 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 <ImfRgbaFile.h>
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#include <ImfArray.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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#ifndef ILM_IMF_TEST_IMAGEDIR
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#define ILM_IMF_TEST_IMAGEDIR
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#endif
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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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readImage (const char fileName[],
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Array2D<Rgba>& pixels,
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int& w,
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int& h,
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unsigned int correctChecksum)
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{
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RgbaInputFile in (fileName);
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const Box2i &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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int dx = dw.min.x;
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int dy = dw.min.y;
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pixels.resizeErase (h, w);
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in.setFrameBuffer (&pixels[0][0] - dx - dy * w, 1, w);
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in.readPixels (in.dataWindow().min.y, in.dataWindow().max.y);
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unsigned int checksum = 0;
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for (int y = 0; y < h; ++y)
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for (int x = 0; x < w; ++x)
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{
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checksum ^= pixels[y][x].r.bits();
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checksum ^= pixels[y][x].g.bits();
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checksum ^= pixels[y][x].b.bits();
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checksum ^= pixels[y][x].a.bits();
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}
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cout << "checksum = " << checksum << flush;
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assert (checksum == correctChecksum);
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cout << ", ok" << flush;
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}
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void
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readBackImage (const char fileName[],
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Array2D<Rgba>& pixels,
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const Array2D<Rgba>& pixels2,
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int& w,
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int& h,
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const int& xs,
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const int& ys)
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{
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InputFile file (fileName);
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Box2i dw = file.header().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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pixels.resizeErase (h, w);
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FrameBuffer frameBuffer;
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Rgba *base = &pixels[0][0] - dw.min.x - dw.min.y * w;
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int xStride = sizeof (pixels[0][0]) * xs;
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int yStride = sizeof (pixels[0][0]) * w * ys;
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frameBuffer.insert ("R", // name
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Slice (HALF, // type
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(char *) &base[0].r, // base
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xStride, // xStride
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yStride, // yStride
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xs, ys, // x/y sampling
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0.0)); // fillValue
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frameBuffer.insert ("G", // name
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Slice (HALF, // type
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(char *) &base[0].g, // base
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xStride, // xStride
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yStride, // yStride
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xs, ys, // x/y sampling
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0.0)); // fillValue
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frameBuffer.insert ("B", // name
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Slice (HALF, // type
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(char *) &base[0].b, // base
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xStride, // xStride
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yStride, // yStride
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xs, ys, // x/y sampling
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0.0)); // fillValue
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frameBuffer.insert ("A", // name
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Slice (HALF, // type
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(char *) &base[0].a, // base
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xStride, // xStride
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yStride, // yStride
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xs, ys, // x/y sampling
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1.0)); // fillValue
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file.setFrameBuffer (frameBuffer);
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file.readPixels (dw.min.y, dw.max.y);
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cout << "comparing, " << flush;
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for (int y = 0; y < h; y+=ys)
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for (int x = 0; x < w; x+=xs)
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{
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assert(pixels2[y][x].r.bits() == pixels[y][x].r.bits());
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assert(pixels2[y][x].g.bits() == pixels[y][x].g.bits());
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assert(pixels2[y][x].b.bits() == pixels[y][x].b.bits());
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assert(pixels2[y][x].a.bits() == pixels[y][x].a.bits());
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}
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cout << "ok" << endl << flush;
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}
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void
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writeImage (const char fileName[],
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const Array2D<OPENEXR_IMF_NAMESPACE::Rgba>& pixels,
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const int& width,
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const int& height,
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const int& xs = 1,
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const int& ys = 1)
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{
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//
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// Write the image to fileName one scanline at a time
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//
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Header header (width, height);
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header.compression() = PIZ_COMPRESSION;
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header.channels().insert ("R", Channel (HALF,xs,ys));
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header.channels().insert ("G", Channel (HALF,xs,ys));
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header.channels().insert ("B", Channel (HALF,xs,ys));
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header.channels().insert ("A", Channel (HALF,xs,ys));
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OutputFile file (fileName, header);
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FrameBuffer frameBuffer;
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const Rgba *base = &pixels[0][0];
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int xStride = sizeof (pixels[0][0]) * xs;
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int yStride = sizeof (pixels[0][0]) * 0;
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frameBuffer.insert ("R", // name
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Slice (HALF, // type
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(char *) &base[0].r, // base
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xStride, // xStride
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yStride, // yStride
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xs, ys)); // x/y sampling
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frameBuffer.insert ("G", // name
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Slice (HALF, // type
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(char *) &base[0].g, // base
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xStride, // xStride
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yStride, // yStride
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xs, ys)); // x/y sampling
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frameBuffer.insert ("B", // name
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Slice (HALF, // type
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(char *) &base[0].b, // base
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xStride, // xStride
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yStride, // yStride
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xs, ys)); // x/y sampling
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frameBuffer.insert ("A", // name
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Slice (HALF, // type
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(char *) &base[0].a, // base
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xStride, // xStride
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yStride, // yStride
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xs, ys)); // x/y sampling
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// iterate over all scanlines, and write them out
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for (int y = 0; y < height; ++y)
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{
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// set the base address for this scanline
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base = &pixels[y][0];
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frameBuffer["R"].base = (char *) &base[0].r;
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frameBuffer["G"].base = (char *) &base[0].g;
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frameBuffer["B"].base = (char *) &base[0].b;
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frameBuffer["A"].base = (char *) &base[0].a;
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// set the framebuffer and write the pixels
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file.setFrameBuffer (frameBuffer);
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file.writePixels (1);
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}
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}
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void
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readCopyRead (const char* infilename,
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unsigned int correctChecksum)
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{
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const char *outfilename = IMF_TMP_DIR "imf_test_native.exr";
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int w, h;
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Array2D<OPENEXR_IMF_NAMESPACE::Rgba> pixels (1,1);
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cout << " reading, " << flush;
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readImage(infilename, pixels, w, h, correctChecksum);
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cout << endl;
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for (int xs = 1; xs <= 2; ++xs)
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{
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for (int ys = 1; ys <= 2; ++ys)
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{
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cout << " x sampling " << xs << ", y sampling " << ys <<
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": writing image, " << flush;
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writeImage(outfilename, pixels, w, h, xs, ys);
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Array2D<OPENEXR_IMF_NAMESPACE::Rgba> pixels2 (1,1);
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cout << "reading back, " << flush;
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readBackImage(outfilename, pixels2, pixels, w, h, xs, ys);
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remove(outfilename);
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}
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}
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}
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} // namespace
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void
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testNativeFormat ()
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{
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try
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{
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cout << "Testing if uncompressible pixel data are written "
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"in Xdr, not native format" << endl;
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cout << "image 1:" << endl;
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readCopyRead(ILM_IMF_TEST_IMAGEDIR "test_native1.exr", 54435);
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cout << "image 2:" << endl;
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readCopyRead(ILM_IMF_TEST_IMAGEDIR "test_native2.exr", 37639);
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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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