Disabled external gits
This commit is contained in:
667
cs440-acg/ext/openexr/OpenEXR/IlmImf/ImfPizCompressor.cpp
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667
cs440-acg/ext/openexr/OpenEXR/IlmImf/ImfPizCompressor.cpp
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///////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2004, 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
|
||||
// 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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//-----------------------------------------------------------------------------
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//
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// class PizCompressor
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//
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//-----------------------------------------------------------------------------
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#include "ImfPizCompressor.h"
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#include "ImfHeader.h"
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#include "ImfChannelList.h"
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#include "ImfHuf.h"
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#include "ImfWav.h"
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#include "ImfMisc.h"
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#include "ImfCheckedArithmetic.h"
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#include <ImathFun.h>
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#include <ImathBox.h>
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#include <Iex.h>
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#include "ImfIO.h"
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#include "ImfXdr.h"
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#include "ImfAutoArray.h"
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#include <string.h>
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#include <assert.h>
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#include "ImfNamespace.h"
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OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER
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using IMATH_NAMESPACE::divp;
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using IMATH_NAMESPACE::modp;
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using IMATH_NAMESPACE::Box2i;
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using IMATH_NAMESPACE::V2i;
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using IEX_NAMESPACE::InputExc;
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namespace {
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//
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// Functions to compress the range of values in the pixel data
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//
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const int USHORT_RANGE = (1 << 16);
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const int BITMAP_SIZE = (USHORT_RANGE >> 3);
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void
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bitmapFromData (const unsigned short data[/*nData*/],
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int nData,
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unsigned char bitmap[BITMAP_SIZE],
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unsigned short &minNonZero,
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unsigned short &maxNonZero)
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{
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for (int i = 0; i < BITMAP_SIZE; ++i)
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bitmap[i] = 0;
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for (int i = 0; i < nData; ++i)
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bitmap[data[i] >> 3] |= (1 << (data[i] & 7));
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bitmap[0] &= ~1; // zero is not explicitly stored in
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// the bitmap; we assume that the
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// data always contain zeroes
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minNonZero = BITMAP_SIZE - 1;
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maxNonZero = 0;
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for (int i = 0; i < BITMAP_SIZE; ++i)
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{
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if (bitmap[i])
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{
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if (minNonZero > i)
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minNonZero = i;
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if (maxNonZero < i)
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maxNonZero = i;
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}
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}
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}
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unsigned short
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forwardLutFromBitmap (const unsigned char bitmap[BITMAP_SIZE],
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unsigned short lut[USHORT_RANGE])
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{
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int k = 0;
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for (int i = 0; i < USHORT_RANGE; ++i)
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{
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if ((i == 0) || (bitmap[i >> 3] & (1 << (i & 7))))
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lut[i] = k++;
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else
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lut[i] = 0;
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}
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return k - 1; // maximum value stored in lut[],
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} // i.e. number of ones in bitmap minus 1
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unsigned short
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reverseLutFromBitmap (const unsigned char bitmap[BITMAP_SIZE],
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unsigned short lut[USHORT_RANGE])
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{
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int k = 0;
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for (int i = 0; i < USHORT_RANGE; ++i)
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{
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if ((i == 0) || (bitmap[i >> 3] & (1 << (i & 7))))
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lut[k++] = i;
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}
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int n = k - 1;
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while (k < USHORT_RANGE)
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lut[k++] = 0;
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return n; // maximum k where lut[k] is non-zero,
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} // i.e. number of ones in bitmap minus 1
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void
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applyLut (const unsigned short lut[USHORT_RANGE],
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unsigned short data[/*nData*/],
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int nData)
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{
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for (int i = 0; i < nData; ++i)
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data[i] = lut[data[i]];
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}
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} // namespace
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struct PizCompressor::ChannelData
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{
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unsigned short * start;
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unsigned short * end;
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int nx;
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int ny;
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int ys;
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int size;
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};
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PizCompressor::PizCompressor
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(const Header &hdr,
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size_t maxScanLineSize,
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size_t numScanLines)
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:
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Compressor (hdr),
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_maxScanLineSize (maxScanLineSize),
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_format (XDR),
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_numScanLines (numScanLines),
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_tmpBuffer (0),
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_outBuffer (0),
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_numChans (0),
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_channels (hdr.channels()),
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_channelData (0)
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{
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size_t tmpBufferSize =
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uiMult (maxScanLineSize, numScanLines) / 2;
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size_t outBufferSize =
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uiAdd (uiMult (maxScanLineSize, numScanLines),
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size_t (65536 + 8192));
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_tmpBuffer = new unsigned short
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[checkArraySize (tmpBufferSize, sizeof (unsigned short))];
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_outBuffer = new char [outBufferSize];
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const ChannelList &channels = header().channels();
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bool onlyHalfChannels = true;
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for (ChannelList::ConstIterator c = channels.begin();
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c != channels.end();
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++c)
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{
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_numChans++;
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assert (pixelTypeSize (c.channel().type) % pixelTypeSize (HALF) == 0);
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if (c.channel().type != HALF)
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onlyHalfChannels = false;
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}
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_channelData = new ChannelData[_numChans];
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const Box2i &dataWindow = hdr.dataWindow();
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_minX = dataWindow.min.x;
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_maxX = dataWindow.max.x;
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_maxY = dataWindow.max.y;
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//
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// We can support uncompressed data in the machine's native format
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// if all image channels are of type HALF, and if the Xdr and the
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// native represenations of a half have the same size.
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//
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if (onlyHalfChannels && (sizeof (half) == pixelTypeSize (HALF)))
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_format = NATIVE;
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}
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PizCompressor::~PizCompressor ()
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{
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delete [] _tmpBuffer;
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delete [] _outBuffer;
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delete [] _channelData;
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}
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int
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PizCompressor::numScanLines () const
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{
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return _numScanLines;
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}
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Compressor::Format
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PizCompressor::format () const
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{
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return _format;
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}
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int
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PizCompressor::compress (const char *inPtr,
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int inSize,
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int minY,
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const char *&outPtr)
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{
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return compress (inPtr,
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inSize,
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Box2i (V2i (_minX, minY),
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V2i (_maxX, minY + numScanLines() - 1)),
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outPtr);
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}
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int
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PizCompressor::compressTile (const char *inPtr,
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int inSize,
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IMATH_NAMESPACE::Box2i range,
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const char *&outPtr)
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{
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return compress (inPtr, inSize, range, outPtr);
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}
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int
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PizCompressor::uncompress (const char *inPtr,
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int inSize,
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int minY,
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const char *&outPtr)
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{
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return uncompress (inPtr,
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inSize,
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Box2i (V2i (_minX, minY),
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V2i (_maxX, minY + numScanLines() - 1)),
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outPtr);
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}
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int
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PizCompressor::uncompressTile (const char *inPtr,
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int inSize,
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IMATH_NAMESPACE::Box2i range,
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const char *&outPtr)
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{
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return uncompress (inPtr, inSize, range, outPtr);
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}
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int
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PizCompressor::compress (const char *inPtr,
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int inSize,
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IMATH_NAMESPACE::Box2i range,
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const char *&outPtr)
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{
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//
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// This is the compress function which is used by both the tiled and
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// scanline compression routines.
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//
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//
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// Special case <20>- empty input buffer
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//
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if (inSize == 0)
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{
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outPtr = _outBuffer;
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return 0;
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}
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//
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// Rearrange the pixel data so that the wavelet
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// and Huffman encoders can process them easily.
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//
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// The wavelet and Huffman encoders both handle only
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// 16-bit data, so 32-bit data must be split into smaller
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// pieces. We treat each 32-bit channel (UINT, FLOAT) as
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// two interleaved 16-bit channels.
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//
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int minX = range.min.x;
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int maxX = range.max.x;
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int minY = range.min.y;
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int maxY = range.max.y;
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if (maxY > _maxY)
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maxY = _maxY;
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if (maxX > _maxX)
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maxX = _maxX;
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unsigned short *tmpBufferEnd = _tmpBuffer;
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int i = 0;
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for (ChannelList::ConstIterator c = _channels.begin();
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c != _channels.end();
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++c, ++i)
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{
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ChannelData &cd = _channelData[i];
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cd.start = tmpBufferEnd;
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cd.end = cd.start;
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cd.nx = numSamples (c.channel().xSampling, minX, maxX);
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cd.ny = numSamples (c.channel().ySampling, minY, maxY);
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cd.ys = c.channel().ySampling;
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cd.size = pixelTypeSize (c.channel().type) / pixelTypeSize (HALF);
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tmpBufferEnd += cd.nx * cd.ny * cd.size;
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}
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if (_format == XDR)
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{
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//
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// Machine-independent (Xdr) data format
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//
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for (int y = minY; y <= maxY; ++y)
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{
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for (int i = 0; i < _numChans; ++i)
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{
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ChannelData &cd = _channelData[i];
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if (modp (y, cd.ys) != 0)
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continue;
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for (int x = cd.nx * cd.size; x > 0; --x)
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{
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Xdr::read <CharPtrIO> (inPtr, *cd.end);
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++cd.end;
|
||||
}
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}
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}
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}
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else
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{
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//
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// Native, machine-dependent data format
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||||
//
|
||||
|
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for (int y = minY; y <= maxY; ++y)
|
||||
{
|
||||
for (int i = 0; i < _numChans; ++i)
|
||||
{
|
||||
ChannelData &cd = _channelData[i];
|
||||
|
||||
if (modp (y, cd.ys) != 0)
|
||||
continue;
|
||||
|
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int n = cd.nx * cd.size;
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memcpy (cd.end, inPtr, n * sizeof (unsigned short));
|
||||
inPtr += n * sizeof (unsigned short);
|
||||
cd.end += n;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#if defined (DEBUG)
|
||||
|
||||
for (int i = 1; i < _numChans; ++i)
|
||||
assert (_channelData[i-1].end == _channelData[i].start);
|
||||
|
||||
assert (_channelData[_numChans-1].end == tmpBufferEnd);
|
||||
|
||||
#endif
|
||||
|
||||
//
|
||||
// Compress the range of the pixel data
|
||||
//
|
||||
|
||||
AutoArray <unsigned char, BITMAP_SIZE> bitmap;
|
||||
unsigned short minNonZero;
|
||||
unsigned short maxNonZero;
|
||||
|
||||
bitmapFromData (_tmpBuffer,
|
||||
tmpBufferEnd - _tmpBuffer,
|
||||
bitmap,
|
||||
minNonZero, maxNonZero);
|
||||
|
||||
AutoArray <unsigned short, USHORT_RANGE> lut;
|
||||
unsigned short maxValue = forwardLutFromBitmap (bitmap, lut);
|
||||
applyLut (lut, _tmpBuffer, tmpBufferEnd - _tmpBuffer);
|
||||
|
||||
//
|
||||
// Store range compression info in _outBuffer
|
||||
//
|
||||
|
||||
char *buf = _outBuffer;
|
||||
|
||||
Xdr::write <CharPtrIO> (buf, minNonZero);
|
||||
Xdr::write <CharPtrIO> (buf, maxNonZero);
|
||||
|
||||
if (minNonZero <= maxNonZero)
|
||||
{
|
||||
Xdr::write <CharPtrIO> (buf, (char *) &bitmap[0] + minNonZero,
|
||||
maxNonZero - minNonZero + 1);
|
||||
}
|
||||
|
||||
//
|
||||
// Apply wavelet encoding
|
||||
//
|
||||
|
||||
for (int i = 0; i < _numChans; ++i)
|
||||
{
|
||||
ChannelData &cd = _channelData[i];
|
||||
|
||||
for (int j = 0; j < cd.size; ++j)
|
||||
{
|
||||
wav2Encode (cd.start + j,
|
||||
cd.nx, cd.size,
|
||||
cd.ny, cd.nx * cd.size,
|
||||
maxValue);
|
||||
}
|
||||
}
|
||||
|
||||
//
|
||||
// Apply Huffman encoding; append the result to _outBuffer
|
||||
//
|
||||
|
||||
char *lengthPtr = buf;
|
||||
Xdr::write <CharPtrIO> (buf, int(0));
|
||||
|
||||
int length = hufCompress (_tmpBuffer, tmpBufferEnd - _tmpBuffer, buf);
|
||||
Xdr::write <CharPtrIO> (lengthPtr, length);
|
||||
|
||||
outPtr = _outBuffer;
|
||||
return buf - _outBuffer + length;
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
PizCompressor::uncompress (const char *inPtr,
|
||||
int inSize,
|
||||
IMATH_NAMESPACE::Box2i range,
|
||||
const char *&outPtr)
|
||||
{
|
||||
//
|
||||
// This is the cunompress function which is used by both the tiled and
|
||||
// scanline decompression routines.
|
||||
//
|
||||
|
||||
//
|
||||
// Special case - empty input buffer
|
||||
//
|
||||
|
||||
if (inSize == 0)
|
||||
{
|
||||
outPtr = _outBuffer;
|
||||
return 0;
|
||||
}
|
||||
|
||||
//
|
||||
// Determine the layout of the compressed pixel data
|
||||
//
|
||||
|
||||
int minX = range.min.x;
|
||||
int maxX = range.max.x;
|
||||
int minY = range.min.y;
|
||||
int maxY = range.max.y;
|
||||
|
||||
if (maxY > _maxY)
|
||||
maxY = _maxY;
|
||||
|
||||
if (maxX > _maxX)
|
||||
maxX = _maxX;
|
||||
|
||||
unsigned short *tmpBufferEnd = _tmpBuffer;
|
||||
int i = 0;
|
||||
|
||||
for (ChannelList::ConstIterator c = _channels.begin();
|
||||
c != _channels.end();
|
||||
++c, ++i)
|
||||
{
|
||||
ChannelData &cd = _channelData[i];
|
||||
|
||||
cd.start = tmpBufferEnd;
|
||||
cd.end = cd.start;
|
||||
|
||||
cd.nx = numSamples (c.channel().xSampling, minX, maxX);
|
||||
cd.ny = numSamples (c.channel().ySampling, minY, maxY);
|
||||
cd.ys = c.channel().ySampling;
|
||||
|
||||
cd.size = pixelTypeSize (c.channel().type) / pixelTypeSize (HALF);
|
||||
|
||||
tmpBufferEnd += cd.nx * cd.ny * cd.size;
|
||||
}
|
||||
|
||||
//
|
||||
// Read range compression data
|
||||
//
|
||||
|
||||
unsigned short minNonZero;
|
||||
unsigned short maxNonZero;
|
||||
|
||||
AutoArray <unsigned char, BITMAP_SIZE> bitmap;
|
||||
memset (bitmap, 0, sizeof (unsigned char) * BITMAP_SIZE);
|
||||
|
||||
Xdr::read <CharPtrIO> (inPtr, minNonZero);
|
||||
Xdr::read <CharPtrIO> (inPtr, maxNonZero);
|
||||
|
||||
if (maxNonZero >= BITMAP_SIZE)
|
||||
{
|
||||
throw InputExc ("Error in header for PIZ-compressed data "
|
||||
"(invalid bitmap size).");
|
||||
}
|
||||
|
||||
if (minNonZero <= maxNonZero)
|
||||
{
|
||||
Xdr::read <CharPtrIO> (inPtr, (char *) &bitmap[0] + minNonZero,
|
||||
maxNonZero - minNonZero + 1);
|
||||
}
|
||||
|
||||
AutoArray <unsigned short, USHORT_RANGE> lut;
|
||||
unsigned short maxValue = reverseLutFromBitmap (bitmap, lut);
|
||||
|
||||
//
|
||||
// Huffman decoding
|
||||
//
|
||||
|
||||
int length;
|
||||
Xdr::read <CharPtrIO> (inPtr, length);
|
||||
|
||||
hufUncompress (inPtr, length, _tmpBuffer, tmpBufferEnd - _tmpBuffer);
|
||||
|
||||
//
|
||||
// Wavelet decoding
|
||||
//
|
||||
|
||||
for (int i = 0; i < _numChans; ++i)
|
||||
{
|
||||
ChannelData &cd = _channelData[i];
|
||||
|
||||
for (int j = 0; j < cd.size; ++j)
|
||||
{
|
||||
wav2Decode (cd.start + j,
|
||||
cd.nx, cd.size,
|
||||
cd.ny, cd.nx * cd.size,
|
||||
maxValue);
|
||||
}
|
||||
}
|
||||
|
||||
//
|
||||
// Expand the pixel data to their original range
|
||||
//
|
||||
|
||||
applyLut (lut, _tmpBuffer, tmpBufferEnd - _tmpBuffer);
|
||||
|
||||
//
|
||||
// Rearrange the pixel data into the format expected by the caller.
|
||||
//
|
||||
|
||||
char *outEnd = _outBuffer;
|
||||
|
||||
if (_format == XDR)
|
||||
{
|
||||
//
|
||||
// Machine-independent (Xdr) data format
|
||||
//
|
||||
|
||||
for (int y = minY; y <= maxY; ++y)
|
||||
{
|
||||
for (int i = 0; i < _numChans; ++i)
|
||||
{
|
||||
ChannelData &cd = _channelData[i];
|
||||
|
||||
if (modp (y, cd.ys) != 0)
|
||||
continue;
|
||||
|
||||
for (int x = cd.nx * cd.size; x > 0; --x)
|
||||
{
|
||||
Xdr::write <CharPtrIO> (outEnd, *cd.end);
|
||||
++cd.end;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
//
|
||||
// Native, machine-dependent data format
|
||||
//
|
||||
|
||||
for (int y = minY; y <= maxY; ++y)
|
||||
{
|
||||
for (int i = 0; i < _numChans; ++i)
|
||||
{
|
||||
ChannelData &cd = _channelData[i];
|
||||
|
||||
if (modp (y, cd.ys) != 0)
|
||||
continue;
|
||||
|
||||
int n = cd.nx * cd.size;
|
||||
memcpy (outEnd, cd.end, n * sizeof (unsigned short));
|
||||
outEnd += n * sizeof (unsigned short);
|
||||
cd.end += n;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#if defined (DEBUG)
|
||||
|
||||
for (int i = 1; i < _numChans; ++i)
|
||||
assert (_channelData[i-1].end == _channelData[i].start);
|
||||
|
||||
assert (_channelData[_numChans-1].end == tmpBufferEnd);
|
||||
|
||||
#endif
|
||||
|
||||
outPtr = _outBuffer;
|
||||
return outEnd - _outBuffer;
|
||||
}
|
||||
|
||||
|
||||
OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT
|
Reference in New Issue
Block a user