///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2014, 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
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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///////////////////////////////////////////////////////////////////////////

//----------------------------------------------------------------------------
//
//      class DeepImageLevel
//
//----------------------------------------------------------------------------

#include "ImfDeepImageLevel.h"
#include "ImfDeepImage.h"
#include <Iex.h>
#include <cassert>

using namespace IMATH_NAMESPACE;
using namespace IEX_NAMESPACE;
using namespace std;

OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER


DeepImageLevel::DeepImageLevel
    (DeepImage& image,
     int xLevelNumber,
     int yLevelNumber,
     const Box2i& dataWindow)
:
    ImageLevel (image, xLevelNumber, yLevelNumber),
    _sampleCounts (*this)
{
    resize (dataWindow);
}


DeepImage &
DeepImageLevel::deepImage ()
{
    return static_cast <DeepImage &> (image());
}


const DeepImage &
DeepImageLevel::deepImage () const
{
    return static_cast <const DeepImage &> (image());
}


DeepImageLevel::~DeepImageLevel ()
{
    clearChannels();
}


void
DeepImageLevel::setSamplesToZero
    (size_t i,
     unsigned int oldNumSamples,
     unsigned int newNumSamples)
{
    for (ChannelMap::iterator j = _channels.begin(); j != _channels.end(); ++j)
    {
        j->second->setSamplesToZero (i, oldNumSamples, newNumSamples);
    }
}


void
DeepImageLevel::moveSampleList
    (size_t i,
     unsigned int oldNumSamples,
     unsigned int newNumSamples,
     size_t newSampleListPosition)
{
    for (ChannelMap::iterator j = _channels.begin(); j != _channels.end(); ++j)
    {
        j->second->moveSampleList (i,
                                   oldNumSamples,
                                   newNumSamples,
                                   newSampleListPosition);
    }
}


void
DeepImageLevel::moveSamplesToNewBuffer
    (const unsigned int * oldNumSamples,
     const unsigned int * newNumSamples,
     const size_t * newSampleListPositions)
{
    for (ChannelMap::iterator j = _channels.begin(); j != _channels.end(); ++j)
    {
        j->second->moveSamplesToNewBuffer (oldNumSamples,
                                           newNumSamples,
                                           newSampleListPositions);
    }
}


void
DeepImageLevel::initializeSampleLists ()
{
    for (ChannelMap::iterator j = _channels.begin(); j != _channels.end(); ++j)
        j->second->initializeSampleLists();
}


void			
DeepImageLevel::resize (const Imath::Box2i& dataWindow)
{
    //
    // Note: if the following code throws an exception, then the image level
    // may be left in an inconsistent state where some channels have been
    // resized, but others have not.  However, the image to which this level
    // belongs will catch the exception and clean up the mess.
    //

    ImageLevel::resize (dataWindow);
    _sampleCounts.resize();

    for (ChannelMap::iterator i = _channels.begin(); i != _channels.end(); ++i)
        i->second->resize();
}


void
DeepImageLevel::shiftPixels (int dx, int dy)
{
    ImageLevel::shiftPixels (dx, dy);

    _sampleCounts.resetBasePointer();

    for (ChannelMap::iterator i = _channels.begin(); i != _channels.end(); ++i)
        i->second->resetBasePointer();
}


void
DeepImageLevel::insertChannel
    (const string& name,
     PixelType type,
     int xSampling,
     int ySampling,
     bool pLinear)
{
    if (xSampling != 1 && ySampling != 1)
    {
        THROW (ArgExc, "Cannot create deep image channel " << name << " "
                       "with x sampling rate " << xSampling << " and "
                       "and y sampling rate " << ySampling << ". X and y "
                       "sampling rates for deep channels must be 1.");
    }

    if (_channels.find (name) != _channels.end())
        throwChannelExists (name);

    switch (type)
    {
      case HALF:
	_channels[name] = new DeepHalfChannel (*this, pLinear);
	break;

      case FLOAT:
	_channels[name] = new DeepFloatChannel (*this, pLinear);
	break;

      case UINT:
	_channels[name] = new DeepUIntChannel (*this, pLinear);
	break;

      default:
        assert (false);
    }
}


void
DeepImageLevel::eraseChannel (const string& name)
{
    ChannelMap::iterator i = _channels.find (name);

    if (i != _channels.end())
    {
        delete i->second;
        _channels.erase (i);
    }
}


void
DeepImageLevel::clearChannels ()
{
    for (ChannelMap::iterator i = _channels.begin(); i != _channels.end(); ++i)
	delete i->second;

    _channels.clear();
}


void
DeepImageLevel::renameChannel (const string &oldName, const string &newName)
{
    ChannelMap::iterator oldChannel = _channels.find (oldName);

    assert (oldChannel != _channels.end());
    assert (_channels.find (newName) == _channels.end());

    _channels[newName] = oldChannel->second;
    _channels.erase (oldChannel);
}


void
DeepImageLevel::renameChannels (const RenamingMap &oldToNewNames)
{
    renameChannelsInMap (oldToNewNames, _channels);
}


DeepImageChannel *
DeepImageLevel::findChannel (const string& name)
{
    ChannelMap::iterator i = _channels.find (name);

    if (i != _channels.end())
        return i->second;
    else
        return 0;
}


const DeepImageChannel *
DeepImageLevel::findChannel (const string& name) const
{
    ChannelMap::const_iterator i = _channels.find (name);

    if (i != _channels.end())
        return i->second;
    else
        return 0;
}


DeepImageChannel &
DeepImageLevel::channel (const string& name)
{
    ChannelMap::iterator i = _channels.find (name);

    if (i == _channels.end())
        throwBadChannelName (name);

    return *i->second;
}


const DeepImageChannel &
DeepImageLevel::channel (const string& name) const
{
    ChannelMap::const_iterator i = _channels.find (name);

    if (i == _channels.end())
        throwBadChannelName (name);

    return *i->second;
}


DeepImageLevel::Iterator
DeepImageLevel::begin ()
{
    return _channels.begin();
}


DeepImageLevel::ConstIterator
DeepImageLevel::begin () const
{
    return _channels.begin();
}


DeepImageLevel::Iterator
DeepImageLevel::end ()
{
    return _channels.end();
}


DeepImageLevel::ConstIterator
DeepImageLevel::end () const
{
    return _channels.end();
}


OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT