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EasyGen/libs/openexr-2.0.0/IlmImfTest/testCompression.cpp

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///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2004, 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.
//
///////////////////////////////////////////////////////////////////////////
#include "compareB44.h"
#include <ImfOutputFile.h>
#include <ImfInputFile.h>
#include <ImfChannelList.h>
#include <ImfArray.h>
#include <ImathRandom.h>
#include <half.h>
#include "compareFloat.h"
#include <stdio.h>
#include <assert.h>
#include "tmpDir.h"
using namespace OPENEXR_IMF_NAMESPACE;
using namespace std;
using namespace IMATH_NAMESPACE;
namespace {
void
fillPixels1 (Array2D<unsigned int> &pi,
Array2D<half> &ph,
Array2D<float> &pf,
int width,
int height)
{
cout << "only zeroes" << endl;
for (int y = 0; y < height; ++y)
for (int x = 0; x < width; ++x)
{
pi[y][x] = 0;
ph[y][x] = 0;
pf[y][x] = 0;
}
}
void
fillPixels2 (Array2D<unsigned int> &pi,
Array2D<half> &ph,
Array2D<float> &pf,
int width,
int height)
{
cout << "pattern 1" << endl;
for (int y = 0; y < height; ++y)
for (int x = 0; x < width; ++x)
{
pi[y][x] = (x + y) & 1;
ph[y][x] = pi[y][x];
pf[y][x] = pi[y][x];
}
}
void
fillPixels3 (Array2D<unsigned int> &pi,
Array2D<half> &ph,
Array2D<float> &pf,
int width,
int height)
{
cout << "pattern 2" << endl;
for (int y = 0; y < height; ++y)
for (int x = 0; x < width; ++x)
{
pi[y][x] = x % 100 + 100 * (y % 100);
ph[y][x] = sin (double (x)) + sin (y * 0.5);
pf[y][x] = sin (double (y)) + sin (x * 0.5);
}
}
void
fillPixels4 (Array2D<unsigned int> &pi,
Array2D<half> &ph,
Array2D<float> &pf,
int width,
int height)
{
cout << "random bits" << endl;
//
// Use of a union to extract the bit pattern from a float, as is
// done below, works only if int and float have the same size.
//
assert (sizeof (int) == sizeof (float));
Rand48 rand;
for (int y = 0; y < height; ++y)
for (int x = 0; x < width; ++x)
{
pi[y][x] = rand.nexti();
ph[y][x].setBits (rand.nexti());
union {int i; float f;} u;
u.i = rand.nexti();
pf[y][x] = u.f;
}
}
void
writeRead (const Array2D<unsigned int> &pi1,
const Array2D<half> &ph1,
const Array2D<float> &pf1,
const char fileName[],
int width,
int height,
int xOffset,
int yOffset,
Compression comp,
int xs,
int ys)
{
//
// Write the pixel data in pi1, ph1 and ph2 to an
// image file using the specified compression type
// and subsampling rates. Read the pixel data back
// from the file and verify that the data did not
// change.
//
cout << "compression " << comp <<
", x sampling " << xs <<
", y sampling " << ys <<
":" << flush;
Header hdr ((Box2i (V2i (0, 0), // display window
V2i (width - 1, height -1))),
(Box2i (V2i (xOffset, yOffset), // data window
V2i (xOffset + width - 1, yOffset + height - 1))));
hdr.compression() = comp;
hdr.channels().insert ("I", // name
Channel (UINT, // type
xs, // xSampling
ys) // ySampling
);
hdr.channels().insert ("H", // name
Channel (HALF, // type
xs, // xSampling
ys) // ySampling
);
hdr.channels().insert ("F", // name
Channel (FLOAT, // type
xs, // xSampling
ys) // ySampling
);
{
FrameBuffer fb;
fb.insert ("I", // name
Slice (UINT, // type
(char *) &pi1[-yOffset / ys][-xOffset / xs], // base
sizeof (pi1[0][0]), // xStride
sizeof (pi1[0][0]) * (width / xs), // yStride
xs, // xSampling
ys) // ySampling
);
fb.insert ("H", // name
Slice (HALF, // type
(char *) &ph1[-yOffset / ys][-xOffset / xs], // base
sizeof (ph1[0][0]), // xStride
sizeof (ph1[0][0]) * (width / xs), // yStride
xs, // xSampling
ys) // ySampling
);
fb.insert ("F", // name
Slice (FLOAT, // type
(char *) &pf1[-yOffset / ys][-xOffset / xs], // base
sizeof (pf1[0][0]), // xStride
sizeof (pf1[0][0]) * (width / xs), // yStride
xs, // xSampling
ys) // ySampling
);
cout << " writing" << flush;
remove (fileName);
OutputFile out (fileName, hdr);
out.setFrameBuffer (fb);
out.writePixels (height);
}
{
cout << " reading" << flush;
InputFile in (fileName);
const Box2i &dw = in.header().dataWindow();
int w = dw.max.x - dw.min.x + 1;
int h = dw.max.y - dw.min.y + 1;
int dx = dw.min.x;
int dy = dw.min.y;
Array2D<unsigned int> pi2 (h / ys, w / xs);
Array2D<half> ph2 (h / ys, w / xs);
Array2D<float> pf2 (h / ys, w / xs);
FrameBuffer fb;
{
int xs = in.header().channels()["I"].xSampling;
int ys = in.header().channels()["I"].ySampling;
fb.insert ("I", // name
Slice (UINT, // type
(char *) &pi2[-dy / ys][-dx / xs], // base
sizeof (pi2[0][0]), // xStride
sizeof (pi2[0][0]) * (w / xs), // yStride
xs, // xSampling
ys) // ySampling
);
}
{
int xs = in.header().channels()["H"].xSampling;
int ys = in.header().channels()["H"].ySampling;
fb.insert ("H", // name
Slice (HALF, // type
(char *) &ph2[-dy / ys][-dx / xs], // base
sizeof (ph2[0][0]), // xStride
sizeof (ph2[0][0]) * (w / xs), // yStride
xs, // xSampling
ys) // ySampling
);
}
{
int xs = in.header().channels()["F"].xSampling;
int ys = in.header().channels()["F"].ySampling;
fb.insert ("F", // name
Slice (FLOAT, // type
(char *) &pf2[-dy / ys][-dx / xs], // base
sizeof (pf2[0][0]), // xStride
sizeof (pf2[0][0]) * (w / xs), // yStride
xs, // xSampling
ys) // ySampling
);
}
in.setFrameBuffer (fb);
in.readPixels (dw.min.y, dw.max.y);
cout << " comparing" << flush;
assert (in.header().displayWindow() == hdr.displayWindow());
assert (in.header().dataWindow() == hdr.dataWindow());
assert (in.header().pixelAspectRatio() == hdr.pixelAspectRatio());
assert (in.header().screenWindowCenter() == hdr.screenWindowCenter());
assert (in.header().screenWindowWidth() == hdr.screenWindowWidth());
assert (in.header().lineOrder() == hdr.lineOrder());
assert (in.header().compression() == hdr.compression());
ChannelList::ConstIterator hi = hdr.channels().begin();
ChannelList::ConstIterator ii = in.header().channels().begin();
while (hi != hdr.channels().end())
{
assert (!strcmp (hi.name(), ii.name()));
assert (hi.channel().type == ii.channel().type);
assert (hi.channel().xSampling == ii.channel().xSampling);
assert (hi.channel().ySampling == ii.channel().ySampling);
++hi;
++ii;
}
assert (ii == in.header().channels().end());
for (int y = 0; y < h / ys; ++y)
{
for (int x = 0; x < w / xs; ++x)
{
assert (pi1[y][x] == pi2[y][x]);
assert (equivalent (pf1[y][x], pf2[y][x], comp));
if (comp != B44_COMPRESSION && comp != B44A_COMPRESSION)
assert (ph1[y][x].bits() == ph2[y][x].bits());
}
}
if (comp == B44_COMPRESSION || comp == B44A_COMPRESSION)
{
Array2D<half> ph3 (h / ys, w / xs);
for (int y = 0; y < h / ys; ++y)
for (int x = 0; x < w / xs; ++x)
ph3[y][x] = ph1[y][x];
compareB44 (w / xs, h / ys, ph3, ph2);
}
}
remove (fileName);
cout << endl;
}
void
writeRead (const Array2D<unsigned int> &pi,
const Array2D<half> &ph,
const Array2D<float> &pf,
int w,
int h,
int dx,
int dy)
{
const char *filename = IMF_TMP_DIR "imf_test_comp.exr";
for (int xs = 1; xs <= 2; ++xs)
{
for (int ys = 1; ys <= 2; ++ys)
{
for (int comp = 0; comp < NUM_COMPRESSION_METHODS; ++comp)
{
writeRead (pi, ph, pf,
filename,
w * xs, h * ys,
dx * xs, dy * ys,
Compression (comp),
xs, ys);
}
}
}
}
} // namespace
void
testCompression ()
{
try
{
cout << "Testing pixel data types, "
"subsampling and "
"compression schemes" << endl;
const int W = 1371;
const int H = 159;
const int DX = 17;
const int DY = 29;
Array2D<unsigned int> pi (H, W);
Array2D<half> ph (H, W);
Array2D<float> pf (H, W);
//
// If the following assertion fails, new pixel types have
// been added to the Imf library; testing code for the new
// pixel types should be added to this file.
//
assert (NUM_PIXELTYPES == 3);
fillPixels1 (pi, ph, pf, W, H);
writeRead (pi, ph, pf, W, H, DX, DY);
fillPixels2 (pi, ph, pf, W, H);
writeRead (pi, ph, pf, W, H, DX, DY);
fillPixels3 (pi, ph, pf, W, H);
writeRead (pi, ph, pf, W, H, DX, DY);
fillPixels4 (pi, ph, pf, W, H);
writeRead (pi, ph, pf, W, H, DX, DY);
cout << "ok\n" << endl;
}
catch (const std::exception &e)
{
cerr << "ERROR -- caught exception: " << e.what() << endl;
assert (false);
}
}
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