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///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2009-2014 DreamWorks Animation 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 DreamWorks Animation 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.
//
///////////////////////////////////////////////////////////////////////////
#ifndef INCLUDED_IMF_DWA_COMRESSOR_H
#define INCLUDED_IMF_DWA_COMRESSOR_H
//------------------------------------------------------------------------------
//
// class DwaCompressor -- Store lossy RGB data by quantizing DCT components.
//
//------------------------------------------------------------------------------
#include <vector>
#include <half.h>
#include "ImfInt64.h"
#include "ImfZip.h"
#include "ImfChannelList.h"
#include "ImfCompressor.h"
#include "ImfNamespace.h"
OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER
class DwaCompressor: public Compressor
{
public:
enum AcCompression
{
STATIC_HUFFMAN,
DEFLATE,
};
DwaCompressor (const Header &hdr,
int maxScanLineSize,
int numScanLines, // ideally is a multiple of 8
AcCompression acCompression);
virtual ~DwaCompressor ();
virtual int numScanLines () const;
virtual Imf::Compressor::Format format () const;
virtual int compress (const char *inPtr,
int inSize,
int minY,
const char *&outPtr);
virtual int compressTile (const char *inPtr,
int inSize,
Imath::Box2i range,
const char *&outPtr);
virtual int uncompress (const char *inPtr,
int inSize,
int minY,
const char *&outPtr);
virtual int uncompressTile (const char *inPtr,
int inSize,
Imath::Box2i range,
const char *&outPtr);
static void initializeFuncs ();
private:
struct ChannelData;
struct CscChannelSet;
struct Classifier;
class LossyDctDecoderBase;
class LossyDctDecoder;
class LossyDctDecoderCsc;
class LossyDctEncoderBase;
class LossyDctEncoder;
class LossyDctEncoderCsc;
enum CompressorScheme
{
UNKNOWN = 0,
LOSSY_DCT,
RLE,
NUM_COMPRESSOR_SCHEMES
};
//
// Per-chunk compressed data sizes, one value per chunk
//
enum DataSizesSingle
{
VERSION = 0, // Version number:
// 0: classic
// 1: adds "end of block" to the AC RLE
UNKNOWN_UNCOMPRESSED_SIZE, // Size of leftover data, uncompressed.
UNKNOWN_COMPRESSED_SIZE, // Size of leftover data, zlib compressed.
AC_COMPRESSED_SIZE, // AC RLE + Huffman size
DC_COMPRESSED_SIZE, // DC + Deflate size
RLE_COMPRESSED_SIZE, // RLE + Deflate data size
RLE_UNCOMPRESSED_SIZE, // RLE'd data size
RLE_RAW_SIZE, // Un-RLE'd data size
AC_UNCOMPRESSED_COUNT, // AC RLE number of elements
DC_UNCOMPRESSED_COUNT, // DC number of elements
AC_COMPRESSION, // AC compression strategy
NUM_SIZES_SINGLE
};
AcCompression _acCompression;
int _maxScanLineSize;
int _numScanLines;
int _min[2], _max[2];
ChannelList _channels;
std::vector<ChannelData> _channelData;
std::vector<CscChannelSet> _cscSets;
std::vector<Classifier> _channelRules;
char *_packedAcBuffer;
size_t _packedAcBufferSize;
char *_packedDcBuffer;
size_t _packedDcBufferSize;
char *_rleBuffer;
size_t _rleBufferSize;
char *_outBuffer;
size_t _outBufferSize;
char *_planarUncBuffer[NUM_COMPRESSOR_SCHEMES];
size_t _planarUncBufferSize[NUM_COMPRESSOR_SCHEMES];
Zip *_zip;
float _dwaCompressionLevel;
int compress (const char *inPtr,
int inSize,
Imath::Box2i range,
const char *&outPtr);
int uncompress (const char *inPtr,
int inSize,
Imath::Box2i range,
const char *&outPtr);
void initializeBuffers (size_t&);
void initializeDefaultChannelRules ();
void initializeLegacyChannelRules ();
void relevantChannelRules( std::vector<Classifier> &) const;
//
// Populate our cached version of the channel data with
// data from the real channel list. We want to
// copy over attributes, determine compression schemes
// releveant for the channel type, and find sets of
// channels to be compressed from Y'CbCr data instead
// of R'G'B'.
//
void classifyChannels (ChannelList channels,
std::vector<ChannelData> &chanData,
std::vector<CscChannelSet> &cscData);
//
// Compute various buffer pointers for each channel
//
void setupChannelData (int minX, int minY, int maxX, int maxY);
};
OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT
#endif
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