Logo Search packages:      
Sourcecode: openexr version File versions

testCustomAttributes.cpp

///////////////////////////////////////////////////////////////////////////
//
// 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 <tmpDir.h>

#include <ImfOutputFile.h>
#include <ImfInputFile.h>
#include <ImfChannelList.h>
#include <ImfAttribute.h>
#include <ImfIntAttribute.h>
#include <ImfOpaqueAttribute.h>
#include <ImfArray.h>
#include "half.h"

#include <stdio.h>
#include <assert.h>

using namespace std;
using namespace Imath;
using namespace Imf;

namespace Imf {

//
// Definition of the custom GlorpAttribute type.
//

struct Glorp
{
    int a, b;
    Glorp (int a = 0, int b = 0): a(a), b(b) {}
};


typedef TypedAttribute<Glorp> GlorpAttribute;
template <> const char *GlorpAttribute::staticTypeName ();
template <> void GlorpAttribute::writeValueTo (OStream &, int) const;
template <> void GlorpAttribute::readValueFrom (IStream &, int, int);

template <>
const char *
GlorpAttribute::staticTypeName ()
{
    return "glorp";
}


template <>
void
GlorpAttribute::writeValueTo (OStream &os, int version) const
{
    Xdr::write <StreamIO> (os, _value.a);
    Xdr::write <StreamIO> (os, _value.b);
}


template <>
void
GlorpAttribute::readValueFrom (IStream &is, int size, int version)
{
    Xdr::read <StreamIO> (is, _value.a);
    Xdr::read <StreamIO> (is, _value.b);
}

} // namespace Imf


namespace {

void
fillPixels (Array2D<float> &pf, int width, int height)
{
    for (int y = 0; y < height; ++y)
      for (int x = 0; x < width; ++x)
          pf[y][x] = x % 10 + 10 * (y % 17);
}


void
writeReadCustomAttr (const Array2D<float> &pf1,
                 const char fileName[],
                 int width,
                 int height)
{
    //
    // Tell the image file library about the custom GlorpAttribute type.
    //

    GlorpAttribute::registerAttributeType();

    //
    // Write an image file with two custom attributes:
    // "custom1", of type IntAttribute, and
    // "custom2", of type GlorpAttribute.
    //

    {
      Header hdr (width, height);

      hdr.insert ("custom1", IntAttribute (25));
      hdr.insert ("custom2", GlorpAttribute (Glorp (4, 9)));

      hdr.channels().insert ("F",               // name
                         Channel (FLOAT,        // type
                              1,          // xSampling
                              1)          // ySampling
                        );

      FrameBuffer fb; 

      fb.insert ("F",                           // name
               Slice (FLOAT,              // type
                    (char *) &pf1[0][0],        // base
                    sizeof (pf1[0][0]),         // xStride
                    sizeof (pf1[0][0]) * width, // yStride
                    1,                    // xSampling
                    1)                    // ySampling
              );

      cout << "writing" << flush;

      remove (fileName);
      OutputFile out (fileName, hdr);
      out.setFrameBuffer (fb);
      out.writePixels (height);
    }

    //
    // Tell the image file library to forget the GlorpAttribute type.
    //

    GlorpAttribute::unRegisterAttributeType();

    //
    // Read the header back from the file:
    // "custom1" should come back as an IntAttribute, and
    // "custom2" should come back as an OpaqueAttribute.
    //

    Header hdr;

    {
      cout << " reading" << flush;

      InputFile in (fileName);

      const IntAttribute *c1;
      const OpaqueAttribute *c2;
      
      c1 = in.header().findTypedAttribute <IntAttribute>    ("custom1");
      c2 = in.header().findTypedAttribute <OpaqueAttribute> ("custom2");

      assert (c1 != 0 && c1->value() == 25);
      assert (c2 != 0);

      hdr = in.header();
    }

    //
    // Tell the image file library to remember the custom GlorpAttribute type.
    //

    GlorpAttribute::registerAttributeType();

    //
    // Write a new image file using the header read back from
    // the previous file file.  The two custom attributes should
    // be stored in the new file.
    //

    {
      FrameBuffer fb; 

      fb.insert ("F",                           // name
               Slice (FLOAT,              // type
                    (char *) &pf1[0][0],        // base
                    sizeof (pf1[0][0]),         // xStride
                    sizeof (pf1[0][0]) * width, // yStride
                    1,                    // xSampling
                    1)                    // ySampling
              );

      cout << " writing" << flush;

      remove (fileName);
      OutputFile out (fileName, hdr);
      out.setFrameBuffer (fb);
      out.writePixels (height);
    }

    //
    // Read the header of the new image file:
    // "custom1" should come back as an IntAttribute, and
    // "custom2" should come back as a GlorpAttribute.
    //

    {
      cout << " reading" << flush;

      InputFile in (fileName);

      const IntAttribute *c1;
      const GlorpAttribute *c2;
      
      c1 = in.header().findTypedAttribute <IntAttribute>   ("custom1");
      c2 = in.header().findTypedAttribute <GlorpAttribute> ("custom2");

      assert (c1 != 0 && c1->value() == 25);
      assert (c2 != 0 && c2->value().a == 4 && c2->value().b == 9);
    }

    remove (fileName);
    cout << endl;
}


} // namespace


void
testCustomAttributes ()
{
    try
    {
      cout << "Testing custom attributes" << endl;

      const int W = 217;
      const int H = 197;

      Array2D<float> pf (H, W);
      fillPixels (pf, W, H);

      const char *filename = IMF_TMP_DIR "imf_test_custom_attr.exr";

      writeReadCustomAttr (pf, filename, W, H);

      cout << "ok\n" << endl;
    }
    catch (const std::exception &e)
    {
      cerr << "ERROR -- caught exception: " << e.what() << endl;
      assert (false);
    }
}

Generated by  Doxygen 1.6.0   Back to index