77 lines
3.0 KiB
C++
77 lines
3.0 KiB
C++
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///////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2011, Industrial Light & Magic, a division of Lucas
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// Digital Ltd. LLC
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Industrial Light & Magic nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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///////////////////////////////////////////////////////////////////////////
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#include "ImfGenericInputFile.h"
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#include <ImfVersion.h>
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#include <ImfXdr.h>
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#include <Iex.h>
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#include <OpenEXRConfig.h>
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OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER
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void GenericInputFile::readMagicNumberAndVersionField(OPENEXR_IMF_INTERNAL_NAMESPACE::IStream& is, int& version)
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{
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//
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// Read the magic number and the file format version number.
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// Then check if we can read the rest of this file.
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//
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int magic;
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OPENEXR_IMF_INTERNAL_NAMESPACE::Xdr::read <OPENEXR_IMF_INTERNAL_NAMESPACE::StreamIO> (is, magic);
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OPENEXR_IMF_INTERNAL_NAMESPACE::Xdr::read <OPENEXR_IMF_INTERNAL_NAMESPACE::StreamIO> (is, version);
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if (magic != MAGIC)
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{
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throw IEX_NAMESPACE::InputExc ("File is not an image file.");
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}
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if (getVersion (version) != EXR_VERSION)
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{
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THROW (IEX_NAMESPACE::InputExc, "Cannot read "
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"version " << getVersion (version) << " "
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"image files. Current file format version "
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"is " << EXR_VERSION << ".");
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}
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if (!supportsFlags (getFlags (version)))
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{
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THROW (IEX_NAMESPACE::InputExc, "The file format version number's flag field "
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"contains unrecognized flags.");
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}
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}
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OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT
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