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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.
//
///////////////////////////////////////////////////////////////////////////
//-----------------------------------------------------------------------------
//
// class PreviewImageAttribute
//
//-----------------------------------------------------------------------------
#include <ImfPreviewImageAttribute.h>
OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER
using namespace OPENEXR_IMF_INTERNAL_NAMESPACE;
template <>
const char *
PreviewImageAttribute::staticTypeName ()
{
return "preview";
}
template <>
void
PreviewImageAttribute::writeValueTo (OPENEXR_IMF_INTERNAL_NAMESPACE::OStream &os, int version) const
{
Xdr::write <StreamIO> (os, _value.width());
Xdr::write <StreamIO> (os, _value.height());
int numPixels = _value.width() * _value.height();
const PreviewRgba *pixels = _value.pixels();
for (int i = 0; i < numPixels; ++i)
{
Xdr::write <StreamIO> (os, pixels[i].r);
Xdr::write <StreamIO> (os, pixels[i].g);
Xdr::write <StreamIO> (os, pixels[i].b);
Xdr::write <StreamIO> (os, pixels[i].a);
}
}
template <>
void
PreviewImageAttribute::readValueFrom (OPENEXR_IMF_INTERNAL_NAMESPACE::IStream &is, int size, int version)
{
int width, height;
Xdr::read <StreamIO> (is, width);
Xdr::read <StreamIO> (is, height);
if (width < 0 || height < 0)
{
throw IEX_NAMESPACE::InputExc("Invalid dimensions in Preview Image Attribute");
}
// total attribute size should be four bytes per pixel + 8 bytes for width and height dimensions
if (static_cast<Int64>(width) * static_cast<Int64>(height) * 4l + 8l != static_cast<Int64>(size) )
{
throw IEX_NAMESPACE::InputExc("Mismatch between Preview Image Attribute size and dimensions");
}
PreviewImage p (width, height);
int numPixels = p.width() * p.height();
PreviewRgba *pixels = p.pixels();
for (int i = 0; i < numPixels; ++i)
{
Xdr::read <StreamIO> (is, pixels[i].r);
Xdr::read <StreamIO> (is, pixels[i].g);
Xdr::read <StreamIO> (is, pixels[i].b);
Xdr::read <StreamIO> (is, pixels[i].a);
}
_value = p;
}
OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT
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