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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 TileDescriptionAttribute
//
//-----------------------------------------------------------------------------
#include <ImfTileDescriptionAttribute.h>
OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER
using namespace OPENEXR_IMF_INTERNAL_NAMESPACE;
template <>
const char *
TileDescriptionAttribute::staticTypeName ()
{
return "tiledesc";
}
template <>
void
TileDescriptionAttribute::writeValueTo (OPENEXR_IMF_INTERNAL_NAMESPACE::OStream &os, int version) const
{
Xdr::write <StreamIO> (os, _value.xSize);
Xdr::write <StreamIO> (os, _value.ySize);
unsigned char tmp = _value.mode | (_value.roundingMode << 4);
Xdr::write <StreamIO> (os, tmp);
}
template <>
void
TileDescriptionAttribute::readValueFrom (OPENEXR_IMF_INTERNAL_NAMESPACE::IStream &is,
int size,
int version)
{
Xdr::read <StreamIO> (is, _value.xSize);
Xdr::read <StreamIO> (is, _value.ySize);
unsigned char tmp;
Xdr::read <StreamIO> (is, tmp);
//
// four bits are allocated for 'mode' for future use (16 possible values)
// but only values 0,1,2 are currently valid. '3' is a special valid enum value
// that indicates bad values have been used
//
// roundingMode can only be 0 or 1, and 2 is a special enum value for 'bad enum'
//
unsigned char levelMode = tmp & 0x0f;
if(levelMode > 3)
{
levelMode = 3;
}
_value.mode = LevelMode(levelMode);
unsigned char levelRoundingMode = (tmp >> 4) & 0x0f;
if(levelRoundingMode > 2)
{
levelRoundingMode = 2;
}
_value.roundingMode = LevelRoundingMode (levelRoundingMode);
}
OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT
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