//////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2003-2012, Industrial Light & Magic, a division of Lucasfilm
// Entertainment Company Ltd. Portions contributed and copyright held by
// others as indicated. All rights reserved.
//
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// 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
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//
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//
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//////////////////////////////////////////////////////////////////////////////
#include <ImfOutputFile.h>
#include <ImfInputFile.h>
#include <ImfTiledOutputFile.h>
#include <ImfTiledInputFile.h>
#include <ImfChannelList.h>
#include <ImfArray.h>
#include <ImfConvert.h>
#include <half.h>
#include "compareFloat.h"
#include <stdio.h>
#include <assert.h>
namespace IMF = OPENEXR_IMF_NAMESPACE;
using namespace IMF;
using namespace std;
using namespace IMATH_NAMESPACE;
namespace {
//
// Functions to test conversion of individual numbers
//
void
testFloatToUint (unsigned int floatVal, unsigned int uintVal)
{
union {unsigned int ui; float f;} u;
u.ui = floatVal;
cout << "floatToUint (" << u.f << ") == " << floatToUint(u.f) << endl;
assert (floatToUint (u.f) == uintVal);
}
void
testHalfToUint (unsigned int halfVal, unsigned int uintVal)
{
half h;
h.setBits (halfVal);
cout << "halfToUint (" << h << ") == " << halfToUint(h) << endl;
assert (halfToUint (h) == uintVal);
}
void
testFloatToHalf (unsigned int floatVal, unsigned int halfVal)
{
union {unsigned int ui; float f;} u;
u.ui = floatVal;
cout << "floatToHalf (" << u.f << ") == " << floatToHalf(u.f) << endl;
assert (floatToHalf(u.f).bits() == halfVal);
}
void
testUintToHalf (unsigned int uintVal, unsigned int halfVal)
{
cout << "uintToHalf (" << uintVal << ") == " << uintToHalf(uintVal) << endl;
assert (uintToHalf(uintVal).bits() == halfVal);
}
void
testNumbers ()
{
testFloatToUint (0x00000000, 0); // 0.0
testFloatToUint (0x3f000000, 0); // +0.5
testFloatToUint (0xbf000000, 0); // -0.5
testFloatToUint (0x42f82000, 124); // +124.0625
testFloatToUint (0xc2f82000, 0); // -124.0625
testFloatToUint (0x58635fa9, 0xffffffff); // +1.0e15
testFloatToUint (0xd8635fa9, 0); // -1.0e15
testFloatToUint (0x7f800000, 0xffffffff); // +infinity
testFloatToUint (0xff800000, 0); // -infinity
testFloatToUint (0x7fffffff, 0); // NaN
testFloatToUint (0xffffffff, 0); // NaN
testHalfToUint (0x0000, 0); // 0.0
testHalfToUint (0x3800, 0); // +0.5
testHalfToUint (0xb800, 0); // -0.5
testHalfToUint (0x57c1, 124); // +124.0625
testHalfToUint (0xd7c1, 0); // -124.0625
testHalfToUint (0x7c00, 0xffffffff); // +infinity
testHalfToUint (0xfc00, 0); // -infinity
testHalfToUint (0x7fff, 0); // NaN
testHalfToUint (0xffff, 0); // NaN
testFloatToHalf (0x00000000, 0x0000); // 0.0
testFloatToHalf (0x3f000000, 0x3800); // +0.5
testFloatToHalf (0xbf000000, 0xb800); // -0.5
testFloatToHalf (0x42f82000, 0x57c1); // +124.0625
testFloatToHalf (0xc2f82000, 0xd7c1); // -124.0625
testFloatToHalf (0x58635fa9, 0x7c00); // +1.0e15
testFloatToHalf (0xd8635fa9, 0xfc00); // -1.0e15
testFloatToHalf (0x7f800000, 0x7c00); // +infinity
testFloatToHalf (0xff800000, 0xfc00); // -infinity
testFloatToHalf (0x7fffffff, 0x7fff); // NaN
testFloatToHalf (0xffffffff, 0xffff); // NaN
testUintToHalf (0, 0x0000);
testUintToHalf (1, 0x3c00);
testUintToHalf (124, 0x57c0);
testUintToHalf (1000000, 0x7c00);
testUintToHalf (0xffffffff, 0x7c00);
}
template <class T>
bool
isEquivalent (T t1, T t2, Compression compression)
{
return t1 == t2;
}
template<>
bool
isEquivalent (float t1, float t2, Compression compression)
{
return equivalent (t1, t2, compression);
}
template <class OutType, PixelType OutTypeTag,
class InType, PixelType InTypeTag>
void
testScanLineImageChannel (const char fileName[],
int width, int height,
Compression compression)
{
cout << "scan lines, "
"compression " << compression << ", " <<
"output type " << OutTypeTag << ", " <<
"input type " << InTypeTag << ":\n " << flush;
Array2D<OutType> outPixels (height, width);
for (int y = 0; y < height; ++y)
for (int x = 0; x < width; ++x)
outPixels[y][x] = x * 10 + y;
{
Header hdr (width, height);
hdr.compression() = compression;
hdr.channels().insert ("X", // name
Channel (OutTypeTag)); // type
FrameBuffer fb;
fb.insert ("X", // name
Slice (OutTypeTag, // type
(char *) &outPixels[0][0], // base
sizeof (outPixels[0][0]), // xStride
sizeof (outPixels[0][0]) * width)); // yStride
cout << "writing " << flush;
OutputFile out (fileName, hdr);
out.setFrameBuffer (fb);
out.writePixels (height);
}
Array2D<InType> inPixels (height, width);
{
cout << "reading " << flush;
FrameBuffer fb;
fb.insert ("X", // name
Slice (InTypeTag, // type
(char *) &inPixels[0][0], // base
sizeof (inPixels[0][0]), // xStride
sizeof (inPixels[0][0]) * width)); // yStride
InputFile in (fileName);
in.setFrameBuffer (fb);
in.readPixels (0, height - 1);
}
cout << "comparing" << flush;
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
assert (isEquivalent (inPixels[y][x],
InType (outPixels[y][x]),
compression));
}
}
cout << endl;
remove (fileName);
}
template <class OutType, PixelType OutTypeTag,
class InType, PixelType InTypeTag>
void
testTiledImageChannel (const char fileName[],
int width, int height,
Compression compression)
{
cout << "tiles, "
"compression " << compression << ", " <<
"output type " << OutTypeTag << ", " <<
"input type " << InTypeTag << ":\n " << flush;
Array2D<OutType> outPixels (height, width);
for (int y = 0; y < height; ++y)
for (int x = 0; x < width; ++x)
outPixels[y][x] = x * 10 + y;
{
Header hdr (width, height);
hdr.setTileDescription (TileDescription (67, 67, ONE_LEVEL));
hdr.compression() = compression;
hdr.channels().insert ("X", // name
Channel (OutTypeTag)); // type
FrameBuffer fb;
fb.insert ("X", // name
Slice (OutTypeTag, // type
(char *) &outPixels[0][0], // base
sizeof (outPixels[0][0]), // xStride
sizeof (outPixels[0][0]) * width)); // yStride
cout << "writing " << flush;
TiledOutputFile out (fileName, hdr);
out.setFrameBuffer (fb);
out.writeTiles (0, out.numXTiles() - 1, 0, out.numYTiles() - 1);
}
Array2D<InType> inPixels (height, width);
{
cout << "reading " << flush;
FrameBuffer fb;
fb.insert ("X", // name
Slice (InTypeTag, // type
(char *) &inPixels[0][0], // base
sizeof (inPixels[0][0]), // xStride
sizeof (inPixels[0][0]) * width)); // yStride
TiledInputFile in (fileName);
in.setFrameBuffer (fb);
in.readTiles (0, in.numXTiles() - 1, 0, in.numYTiles() - 1);
}
cout << "comparing" << flush;
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
assert (isEquivalent (inPixels[y][x],
InType (outPixels[y][x]),
compression));
}
}
cout << endl;
remove (fileName);
}
template <class OutType, PixelType OutTypeTag,
class InType, PixelType InTypeTag>
void
testImageChannel (const std::string &fileName,
int width, int height,
Compression compression)
{
testScanLineImageChannel <OutType, OutTypeTag, InType, InTypeTag>
(fileName.c_str(), width, height, compression);
testTiledImageChannel <OutType, OutTypeTag, InType, InTypeTag>
(fileName.c_str(), width, height, compression);
}
} // namespace
void
testConversion (const std::string &tempDir)
{
try
{
cout << "Testing conversion between pixel data types" << endl;
cout << "individual numbers" << endl;
testNumbers();
cout << "conversion of image channels while reading a file " << endl;
for (int comp = 0; comp < NUM_COMPRESSION_METHODS; ++comp)
{
if (comp == B44_COMPRESSION ||
comp == B44A_COMPRESSION)
{
continue;
}
testImageChannel <unsigned int, IMF::UINT, unsigned int, IMF::UINT>
(tempDir + "imf_test_conv.exr",
317, 539,
Compression (comp));
testImageChannel <unsigned int, IMF::UINT, half, IMF::HALF>
(tempDir + "imf_test_conv.exr",
317, 539,
Compression (comp));
testImageChannel <unsigned int, IMF::UINT, float, IMF::FLOAT>
(tempDir + "imf_test_conv.exr",
317, 539,
Compression (comp));
testImageChannel <half, IMF::HALF, unsigned int, IMF::UINT>
(tempDir + "imf_test_conv.exr",
317, 539,
Compression (comp));
testImageChannel <half, IMF::HALF, half, IMF::HALF>
(tempDir + "imf_test_conv.exr",
317, 539,
Compression (comp));
testImageChannel <half, IMF::HALF, float, IMF::FLOAT>
(tempDir + "imf_test_conv.exr",
317, 539,
Compression (comp));
testImageChannel <float, IMF::FLOAT, unsigned int, IMF::UINT>
(tempDir + "imf_test_conv.exr",
317, 539,
Compression (comp));
testImageChannel <float, IMF::FLOAT, half, IMF::HALF>
(tempDir + "imf_test_conv.exr",
317, 539,
Compression (comp));
testImageChannel <float, IMF::FLOAT, float, IMF::FLOAT>
(tempDir + "imf_test_conv.exr",
317, 539,
Compression (comp));
}
cout << "ok\n" << endl;
}
catch (const std::exception &e)
{
cerr << "ERROR -- caught exception: " << e.what() << endl;
assert (false);
}
}