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////////////////////////////////////////////////////////////////////////////////
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// Copyright (c) 1996 - 2008, Hewlett-Packard Development Company, L.P.
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// All rights reserved.
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// This software is licensed solely for use with HP products. Redistribution
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// and use with HP products in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// - Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// - Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// - Neither the name of Hewlett-Packard nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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// - Redistributors making defect corrections to source code grant to
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// Hewlett-Packard the right to use and redistribute such defect
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// This software contains technology licensed from third parties; use with
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// non-HP products is at your own risk and may require a royalty.
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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 LIMITED
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// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL HEWLETT-PACKARD OR ITS
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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////////////////////////////////////////////////////////////////////////////////
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#include "CommonDefinitions.h"
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#include "Processor.h"
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/* flags that track the block formations use bits which are specified in the
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following enumeration. The first number is the horizontal block size. The
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second number is the vertical block size. Then north (upper) or south (lower)
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and west (left) or east (right) are specified when appropriate. Finally if a
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location sequence number is needed then it is listed.
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// Slow down the system and gather stats or not.
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#define kGatherStats 0
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#define kDecompressStats 0
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eNorths = e11n | e21nw | e21ne | e41ni | e41n,
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eSouths = e11s | e21sw | e21se | e41si | e41s,
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eTheRest = ~(eNorths|eSouths),
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eTopLeftOfBlocks = e12 | e14n | e21nw | e21sw | e22w | e24nw | e41ni | e41si | e42i | e44ni | e84ni
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#define isOdd(x) (x & 0x01)
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#define isWhite(x) (((x) & kWhite) == kWhite)
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#define kMemWritesOptimize 1 // disables mem write optimizations.
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//#ifndef kGatherStats
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//#error "must define kGatherStats. Try including platform.h"
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#if kGatherStats == 1
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// Used now to track blocks being formed. These enums are only used in gathering
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// statistics for the developer to look at later. These are not critical to the actual
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// functioning of the algorithms.
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eLastAveragingFlagPosition
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class ErnieFilter : public Processor
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ErnieFilter(int rowWidthInPixels, pixelTypes pixelType, unsigned int maxErrorForTwoPixels);
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virtual ~ErnieFilter();
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// Processor interface /////////////////////////////////////
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bool Process(RASTERDATA* InputRaster=NULL);
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unsigned int GetMaxOutputWidth();
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bool NextOutputRaster(RASTERDATA& next_raster);
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/////////////////////////////////////////////////////////////
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uint32_t *m_row_bufs[4];
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unsigned char *m_row_ptrs[4];
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BYTE *m_black_row_ptrs[4];
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unsigned int m_black_raster_sizes[4];
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unsigned char *m_compression_out_buf;
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unsigned int *m_pixel_filtered_flags[2];
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int m_buffered_row_count;
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int m_pixel_offsets[8];
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int m_pixel_offsets_index;
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int m_row_width_in_pixels;
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int m_row_width_in_bytes;
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int m_internal_bytes_per_pixel;
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int m_input_bytes_per_pixel;
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unsigned int m_max_error_for_two_pixels;
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void submitRowToFilter(unsigned char *rowPtr);
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void writeBufferedRows();
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void Filter1RawRow(unsigned char *currPtr, int rowWidthInPixels, unsigned int *flagsPtr);
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void Filter2RawRows(unsigned char *currPtr, unsigned char *upPtr, int rowWidthInPixels, unsigned int *flagsPtr);
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void Filter2PairsOfFilteredRows(unsigned char *row1Ptr, unsigned char *row2Ptr, unsigned char *row3Ptr, unsigned char *row4Ptr);
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void Filter3FilteredRows(unsigned char *row1Ptr, unsigned char *row2Ptr, unsigned char *row3Ptr);
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inline unsigned int DeltaE(int dr0, int dr1, int dg0, int dg1, int db0, int db1);
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inline bool NewDeltaE(int dr0, int dr1, int dg0, int dg1, int db0, int db1, int tolerance);
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inline unsigned int GradDeltaE(int dr, int dg, int db);
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#if kMemWritesOptimize == 1
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void WriteBlockPixels();
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eBufferedPixelWidthInBytes = 4
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ENDIAN_TYPE m_eEndian;
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inline uint32_t get4Pixel(unsigned char *pixAddress)
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#ifdef APDK_LITTLE_ENDIAN
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return (((unsigned int*)pixAddress)[0]) & kWhite;
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return (((unsigned int*)pixAddress)[0]) & 0xFFFFFF00;
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inline uint32_t get4Pixel(unsigned char *pixAddress, int pixelOffset)
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#ifdef APDK_LITTLE_ENDIAN
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return *(((unsigned int*)pixAddress)+pixelOffset) & kWhite;
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return *(((unsigned int*)pixAddress)+pixelOffset) & 0xFFFFFF00;
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inline void put4Pixel(unsigned char *pixAddress, int pixelOffset, uint32_t pixel)
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#ifdef APDK_LITTLE_ENDIAN
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*(((unsigned int*)pixAddress)+pixelOffset) = pixel & kWhite;
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*(((unsigned int*)pixAddress)+pixelOffset) = pixel & 0xFFFFFF00;
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#endif // ERNIEFILTER_H
added
removed
prnt/hpcups/ErnieFilter.h
