436 lines
9.4 KiB
C++
436 lines
9.4 KiB
C++
///////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Copyright (c) 2007, Weta Digital Ltd
|
|
//
|
|
// 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 Weta Digital 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.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// Functions related to accessing channels
|
|
// and views in multi-view OpenEXR files.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#include <ImfMultiView.h>
|
|
|
|
using namespace std;
|
|
#include "ImfNamespace.h"
|
|
|
|
OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER
|
|
|
|
namespace {
|
|
|
|
StringVector
|
|
parseString (string name, char c = '.')
|
|
{
|
|
//
|
|
// Turn name into a list of strings, separating
|
|
// on char 'c' with whitespace stripped.
|
|
//
|
|
|
|
StringVector r;
|
|
|
|
while (name.size() > 0)
|
|
{
|
|
size_t s = name.find (c);
|
|
string sec = name.substr (0, s);
|
|
|
|
//
|
|
// Strip spaces from beginning
|
|
//
|
|
|
|
while (sec.size() > 0 && sec[0] == ' ')
|
|
sec.erase (0, 1);
|
|
|
|
//
|
|
// Strip spaces from end
|
|
//
|
|
|
|
while (sec.size() > 0 && sec[sec.size() - 1] == ' ')
|
|
sec.erase (sec.size() - 1);
|
|
|
|
r.push_back (sec);
|
|
|
|
//
|
|
// Strip off name including ending 'c'
|
|
//
|
|
|
|
if (s == name.npos)
|
|
name = "";
|
|
else
|
|
name = name.substr (s + 1);
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
|
|
int
|
|
viewNum (const string &view, const StringVector &multiView)
|
|
{
|
|
//
|
|
// returns which view number is called 'view'
|
|
// returns -1 if no member of multiView is 'view'
|
|
// (i.e. if viewNum() returns -1, 'view' isn't a view name
|
|
// if viewNum() returns 0, 'view' is the default view
|
|
// otherwise, it's some other (valid) view
|
|
//
|
|
|
|
for (size_t i = 0; i < multiView.size(); ++i)
|
|
{
|
|
if (multiView[i] == view)
|
|
return i;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
|
|
string
|
|
defaultViewName (const StringVector &multiView)
|
|
{
|
|
if (multiView.size() > 0)
|
|
return multiView[0];
|
|
else
|
|
return "";
|
|
}
|
|
|
|
|
|
string
|
|
viewFromChannelName (const string &channel,
|
|
const StringVector &multiView)
|
|
{
|
|
//
|
|
// Given the name of a channel, return the name of the view to
|
|
// which it belongs.
|
|
//
|
|
|
|
//
|
|
// View name is penultimate section of name separated by periods ('.'s)
|
|
//
|
|
|
|
StringVector s = parseString (channel, '.');
|
|
|
|
if (s.size() == 0)
|
|
return ""; // nothing in, nothing out
|
|
|
|
if (s.size() == 1)
|
|
{
|
|
//
|
|
// Return default view name.
|
|
// The rules say ALL channels with no periods
|
|
// in the name belong to the default view.
|
|
//
|
|
|
|
return multiView[0];
|
|
}
|
|
else
|
|
{
|
|
//
|
|
// size >= 2 - the last part is the channel name,
|
|
// the next-to-last part is the view name.
|
|
// Check if that part of the name really is
|
|
// a valid view and, if it is, return it.
|
|
//
|
|
|
|
const string &viewName = s[s.size() - 2];
|
|
|
|
if (viewNum (viewName, multiView) >= 0)
|
|
return viewName;
|
|
else
|
|
return ""; // not associated with any particular view
|
|
}
|
|
}
|
|
|
|
|
|
ChannelList
|
|
channelsInView (const string & viewName,
|
|
const ChannelList & channelList,
|
|
const StringVector & multiView)
|
|
{
|
|
//
|
|
// Return a list of all channels belonging to view viewName.
|
|
//
|
|
|
|
ChannelList q;
|
|
|
|
for (ChannelList::ConstIterator i = channelList.begin();
|
|
i != channelList.end();
|
|
++i)
|
|
{
|
|
//
|
|
// Get view name for this channel
|
|
//
|
|
|
|
string view = viewFromChannelName (i.name(), multiView);
|
|
|
|
|
|
//
|
|
// Insert channel into q if it's a member of view viewName
|
|
//
|
|
|
|
if (view == viewName)
|
|
q.insert (i.name(), i.channel());
|
|
}
|
|
|
|
return q;
|
|
}
|
|
|
|
|
|
ChannelList
|
|
channelsInNoView (const ChannelList &channelList,
|
|
const StringVector &multiView)
|
|
{
|
|
//
|
|
// Return a list of channels not associated with any named view.
|
|
//
|
|
|
|
return channelsInView ("", channelList, multiView);
|
|
}
|
|
|
|
|
|
|
|
bool
|
|
areCounterparts (const string &channel1,
|
|
const string &channel2,
|
|
const StringVector &multiView)
|
|
{
|
|
//
|
|
// Given two channels, return true if they are the same
|
|
// channel in two different views.
|
|
//
|
|
|
|
StringVector chan1 = parseString (channel1);
|
|
size_t size1 = chan1.size(); // number of SECTIONS in string
|
|
// name (not string length)
|
|
|
|
StringVector chan2 = parseString (channel2);
|
|
size_t size2 = chan2.size();
|
|
|
|
if (size1 == 0 || size2 == 0)
|
|
return false;
|
|
|
|
//
|
|
// channel1 and channel2 can't be counterparts
|
|
// if either channel is in no view.
|
|
//
|
|
|
|
if (size1 > 1 && viewNum (chan1[size1 - 2], multiView) == -1)
|
|
return false;
|
|
|
|
if (size2 > 1 && viewNum (chan2[size2 - 2], multiView) == -1)
|
|
return false;
|
|
|
|
if (viewFromChannelName (channel1, multiView) ==
|
|
viewFromChannelName (channel2, multiView))
|
|
{
|
|
//
|
|
// channel1 and channel2 are not counterparts
|
|
// if they are in the same view.
|
|
//
|
|
|
|
return false;
|
|
}
|
|
|
|
if (size1 == 1)
|
|
{
|
|
//
|
|
// channel1 is a default channel - the channels will only be
|
|
// counterparts if channel2 is of the form <view>.<channel1>
|
|
//
|
|
|
|
return size2 == 2 && chan1[0] == chan2[1];
|
|
}
|
|
|
|
if (size2 == 1)
|
|
{
|
|
//
|
|
// channel2 is a default channel - the channels will only be
|
|
// counterparts if channel1 is of the form <view>.<channel2>
|
|
//
|
|
|
|
return size1 == 2 && chan2[0] == chan1[1];
|
|
}
|
|
|
|
//
|
|
// Neither channel is a default channel. To be counterparts both
|
|
// channel names must have the same number of components, and
|
|
// all components except the penultimate one must be the same.
|
|
//
|
|
|
|
if (size1 != size2)
|
|
return false;
|
|
|
|
for(size_t i = 0; i < size1; ++i)
|
|
{
|
|
if (i != size1 - 2 && chan1[i] != chan2[i])
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
ChannelList
|
|
channelInAllViews (const string &channelName,
|
|
const ChannelList &channelList,
|
|
const StringVector &multiView)
|
|
{
|
|
//
|
|
// Given the name of a channel, return a
|
|
// list of the same channel in all views.
|
|
//
|
|
|
|
ChannelList q;
|
|
|
|
for (ChannelList::ConstIterator i=channelList.begin();
|
|
i != channelList.end();
|
|
++i)
|
|
{
|
|
if (i.name() == channelName ||
|
|
areCounterparts (i.name(), channelName, multiView))
|
|
{
|
|
q.insert (i.name(), i.channel());
|
|
}
|
|
}
|
|
|
|
return q;
|
|
}
|
|
|
|
|
|
string
|
|
channelInOtherView (const string &channelName,
|
|
const ChannelList &channelList,
|
|
const StringVector &multiView,
|
|
const string &otherViewName)
|
|
{
|
|
//
|
|
// Given the name of a channel in one view, return the
|
|
// corresponding channel name for view otherViewName.
|
|
//
|
|
|
|
for (ChannelList::ConstIterator i=channelList.begin();
|
|
i != channelList.end();
|
|
++i)
|
|
{
|
|
if (viewFromChannelName (i.name(), multiView) == otherViewName &&
|
|
areCounterparts (i.name(), channelName, multiView))
|
|
{
|
|
return i.name();
|
|
}
|
|
}
|
|
|
|
return "";
|
|
}
|
|
|
|
|
|
string
|
|
insertViewName (const string &channel,
|
|
const StringVector &multiView,
|
|
int i)
|
|
{
|
|
//
|
|
// Insert multiView[i] into the channel name if appropriate.
|
|
//
|
|
|
|
StringVector s = parseString (channel, '.');
|
|
|
|
if (s.size() == 0)
|
|
return ""; // nothing in, nothing out
|
|
|
|
if (s.size() == 1 && i == 0)
|
|
{
|
|
//
|
|
// Channel in the default view, with no periods in its name.
|
|
// Do not insert view name.
|
|
//
|
|
|
|
return channel;
|
|
}
|
|
|
|
//
|
|
// View name becomes penultimate section of new channel name.
|
|
//
|
|
|
|
string newName;
|
|
|
|
for (size_t j = 0; j < s.size(); ++j)
|
|
{
|
|
if (j < s.size() - 1)
|
|
newName += s[j] + ".";
|
|
else
|
|
newName += multiView[i] + "." + s[j];
|
|
}
|
|
|
|
return newName;
|
|
}
|
|
|
|
|
|
string
|
|
removeViewName(const string & channel,const string & view)
|
|
{
|
|
StringVector s = parseString (channel, '.');
|
|
|
|
if (s.size() == 0)
|
|
return ""; // nothing in, nothing out
|
|
|
|
if (s.size() == 1)
|
|
{
|
|
//
|
|
// Channel in the default view, since no periods in its name.
|
|
// No viewname to remove
|
|
//
|
|
|
|
return channel;
|
|
}
|
|
|
|
string newName;
|
|
for( size_t j = 0 ; j < s.size() ; ++j)
|
|
{
|
|
// only add the penultimate string part
|
|
// if it doesn't match the view name
|
|
if(j+2!=s.size() || s[j]!=view)
|
|
{
|
|
newName += s[j];
|
|
if(j+1!=s.size())
|
|
{
|
|
newName += ".";
|
|
}
|
|
}
|
|
}
|
|
|
|
return newName;
|
|
|
|
}
|
|
|
|
OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT
|