mirror of https://github.com/etlegacy/EasyGen.git
348 lines
8.4 KiB
C++
348 lines
8.4 KiB
C++
///////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2004, 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 "compareB44.h"
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#include <ImfRgbaFile.h>
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#include <ImfArray.h>
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#include <string>
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#include <ImathRandom.h>
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#include <ImfThreading.h>
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#include <IlmThread.h>
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#include <IlmThreadMutex.h>
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#include <IlmThreadSemaphore.h>
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#include <ImfThreading.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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using namespace ILMTHREAD_NAMESPACE;
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namespace {
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Rand48 rand1 (27);
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Mutex scanlineMutex;
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Semaphore threadSemaphore;
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int remainingScanlines = 0;
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void
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fillPixels (Array2D<Rgba> &pixels, int w, int h)
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{
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assert (sizeof (int) == sizeof (float));
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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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Rgba &p = pixels[y][x];
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p.r = x % 100 + 100 * (y % 100) +
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rand1.nextf (-0.01f, -0.01f);
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p.g = 0.5 + 0.5 * sin (0.1 * x + 0.2 * y) +
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rand1.nextf (-0.01f, -0.01f);
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p.b = 0.5 + 0.5 * sin (0.1 * x + 0.3 * y) +
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rand1.nextf (-0.01f, -0.01f);
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p.a = rand1.nextf (0.0f, 1.0f);
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}
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}
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}
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class WriterThread: public Thread
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{
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public:
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WriterThread (RgbaOutputFile *outfile);
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virtual void run ();
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private:
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RgbaOutputFile * _outfile;
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};
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WriterThread::WriterThread (RgbaOutputFile *outfile): _outfile (outfile)
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{
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start();
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}
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void
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WriterThread::run ()
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{
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//
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// Signal that the thread has started
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//
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threadSemaphore.post();
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while (true)
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{
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Lock lock (scanlineMutex);
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if (remainingScanlines)
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{
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int n = int (rand1.nextf (0.0f, remainingScanlines) + 0.5f);
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_outfile->writePixels (n);
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remainingScanlines -= n;
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}
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else
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{
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break;
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}
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}
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}
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class ReaderThread : public Thread
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{
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public:
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ReaderThread (RgbaInputFile *infile, int start, int step);
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virtual void run ();
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private:
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RgbaInputFile * _infile;
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int _start;
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int _step;
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};
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ReaderThread::ReaderThread (RgbaInputFile *infile, int start, int step):
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_infile (infile), _start (start), _step (step)
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{
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Thread::start();
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}
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void
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ReaderThread::run ()
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{
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//
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// Signal that the thread has started
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//
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threadSemaphore.post ();
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int num = _infile->header().dataWindow().max.y -
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_infile->header().dataWindow().min.y + 1;
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for (int i = _start; i < num; i += _step)
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_infile->readPixels (i);
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}
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void
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writeReadRGBA (const char fileName[],
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int width,
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int height,
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const Array2D<Rgba> &p1,
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RgbaChannels channels,
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Compression comp)
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{
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//
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// Save the selected channels of RGBA image p1; save the
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// scan lines in the specified order. Read the image back
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// from the file, and compare the data with the orignal.
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//
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cout << "channels " <<
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((channels & WRITE_R)? "R": "") <<
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((channels & WRITE_G)? "G": "") <<
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((channels & WRITE_B)? "B": "") <<
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((channels & WRITE_A)? "A": "") <<
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", compression " << comp << ", " << flush;
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Header header (width, height);
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header.compression() = comp;
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{
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remove (fileName);
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cout << "writing " << flush;
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RgbaOutputFile out (fileName, header, channels);
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out.setFrameBuffer (&p1[0][0], 1, width);
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remainingScanlines = height;
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WriterThread writer1 (&out);
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WriterThread writer2 (&out);
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threadSemaphore.wait();
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threadSemaphore.wait();
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}
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{
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cout << "reading " << flush;
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RgbaInputFile in (fileName);
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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 dx = dw.min.x;
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int dy = dw.min.y;
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Array2D<Rgba> p2 (h, w);
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in.setFrameBuffer (&p2[-dy][-dx], 1, w);
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{
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ReaderThread reader1 (&in, 0, 2);
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ReaderThread reader2 (&in, 1, 2);
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threadSemaphore.wait();
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threadSemaphore.wait();
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}
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assert (in.displayWindow() == header.displayWindow());
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assert (in.dataWindow() == header.dataWindow());
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assert (in.pixelAspectRatio() == header.pixelAspectRatio());
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assert (in.screenWindowCenter() == header.screenWindowCenter());
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assert (in.screenWindowWidth() == header.screenWindowWidth());
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assert (in.lineOrder() == header.lineOrder());
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assert (in.compression() == header.compression());
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assert (in.channels() == channels);
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cout << "comparing " << endl;
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if (in.compression() == B44_COMPRESSION ||
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in.compression() == B44A_COMPRESSION)
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{
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compareB44 (width, height, p1, p2, channels);
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}
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else
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{
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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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if (channels & WRITE_R)
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assert (p2[y][x].r == p1[y][x].r);
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else
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assert (p2[y][x].r == 0);
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if (channels & WRITE_G)
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assert (p2[y][x].g == p1[y][x].g);
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else
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assert (p2[y][x].g == 0);
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if (channels & WRITE_B)
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assert (p2[y][x].b == p1[y][x].b);
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else
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assert (p2[y][x].b == 0);
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if (channels & WRITE_A)
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assert (p2[y][x].a == p1[y][x].a);
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else
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assert (p2[y][x].a == 1);
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}
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}
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}
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}
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remove (fileName);
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}
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} // namespace
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void
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testSharedFrameBuffer ()
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{
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try
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{
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cout << "Testing reading from and writing to files using\n"
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"multiple threads and a shared framebuffer" << endl;
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if (!ILMTHREAD_NAMESPACE::supportsThreads ())
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{
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cout << " Threading not supported!" << endl << endl;
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return;
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}
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const int W = 1371;
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const int H = 159;
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Array2D<Rgba> p1 (H, W);
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fillPixels (p1, W, H);
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for (int n = 0; n <= 8; n++)
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{
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int numThreads = (n * 3) % 8;
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setGlobalThreadCount (numThreads);
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cout << "number of threads: " << globalThreadCount () << endl;
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for (int comp = 0; comp < NUM_COMPRESSION_METHODS; ++comp)
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{
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writeReadRGBA (IMF_TMP_DIR "imf_test_rgba.exr",
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W, H, p1,
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WRITE_RGBA,
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Compression (comp));
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writeReadRGBA (IMF_TMP_DIR "imf_test_rgba.exr",
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W, H, p1,
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WRITE_RGB,
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Compression (comp));
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writeReadRGBA (IMF_TMP_DIR "imf_test_rgba.exr",
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W, H, p1,
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WRITE_A,
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Compression (comp));
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writeReadRGBA (IMF_TMP_DIR "imf_test_rgba.exr",
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W, H, p1,
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RgbaChannels (WRITE_R | WRITE_B),
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Compression (comp));
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}
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}
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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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