53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
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//
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// SPDX-License-Identifier: BSD-3-Clause
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// Copyright (c) Contributors to the OpenEXR Project.
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//
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#ifndef INCLUDED_IMF_IMAGE_CHANNEL_RENAMING_H
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#define INCLUDED_IMF_IMAGE_CHANNEL_RENAMING_H
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//----------------------------------------------------------------------------
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//
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// typedef RenamingMap,
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// helper functions for image channel renaming.
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//
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//----------------------------------------------------------------------------
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#include "ImfNamespace.h"
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#include <map>
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#include <string>
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OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER
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//
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// Given a map from old channel names to new channel names,
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// rename the channels in an image or image level.
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// This function assumes that the channel old-to-new-names
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// map has already been checked for collisions.
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//
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typedef std::map<std::string, std::string> RenamingMap;
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template <class ChannelMap>
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inline void
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renameChannelsInMap (const RenamingMap& oldToNewNames, ChannelMap& channels)
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{
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ChannelMap renamedChannels;
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for (typename ChannelMap::const_iterator i = channels.begin ();
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i != channels.end ();
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++i)
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{
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RenamingMap::const_iterator j = oldToNewNames.find (i->first);
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std::string newName = (j == oldToNewNames.end ()) ? i->first
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: j->second;
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renamedChannels[newName] = i->second;
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}
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channels = renamedChannels;
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}
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OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT
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#endif
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