magick

compress.c File Reference

#include "magick/studio.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/color-private.h"
#include "magick/compress.h"
#include "magick/constitute.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/image-private.h"
#include "magick/list.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/option.h"
#include "magick/resource_.h"
#include "magick/string_.h"
#include "tiffconf.h"
#include "tiffio.h"
#include "zlib.h"

Data Structures

struct  _Ascii85Info
struct  HuffmanTable

Defines

#define CCITTParam   "-1"
#define TWId   23
#define MWId   24
#define TBId   25
#define MBId   26
#define EXId   27
#define MaxLineExtent   36
#define HashSize   1021
#define MBHashA   293
#define MBHashB   2695
#define MWHashA   3510
#define MWHashB   1178
#define InitializeHashTable(hash, table, a, b)
#define InputBit(bit)
#define HuffmanOutputCode(entry)
#define OutputBit(count)
#define LZWClr   256UL
#define LZWEod   257UL
#define OutputCode(code)

Functions

static char * Ascii85Tuple (unsigned char *data)
MagickExport void Ascii85Initialize (Image *image)
MagickExport void Ascii85Flush (Image *image)
MagickExport void Ascii85Encode (Image *image, const unsigned char code)
static size_t MagickMax (const size_t x, const size_t y)
static size_t MagickMin (const size_t x, const size_t y)
MagickExport MagickBooleanType HuffmanDecodeImage (Image *image)
MagickExport MagickBooleanType HuffmanEncodeImage (const ImageInfo *image_info, Image *image)
MagickExport MagickBooleanType Huffman2DEncodeImage (const ImageInfo *image_info, Image *image)
MagickExport MagickBooleanType LZWEncodeImage (Image *image, const size_t length, unsigned char *pixels)
MagickExport MagickBooleanType PackbitsEncodeImage (Image *image, const size_t length, unsigned char *pixels)
MagickExport MagickBooleanType ZLIBEncodeImage (Image *image, const size_t length, unsigned char *pixels)

Variables

static const HuffmanTable MBTable []
static const HuffmanTable EXTable []
static const HuffmanTable MWTable []
static const HuffmanTable TBTable []
static const HuffmanTable TWTable []

Define Documentation

#define CCITTParam   "-1"

#define EXId   27

#define HashSize   1021

#define HuffmanOutputCode ( entry   ) 

Value:

{  \
  mask=1 << (entry->length-1);  \
  while (mask != 0)  \
  {  \
    OutputBit(((entry->code & mask) != 0 ? 1 : 0));  \
    mask>>=1;  \
  }  \
}

#define InitializeHashTable ( hash,
table,
a,
b   ) 

Value:

{ \
  entry=table; \
  while (entry->code != 0) \
  {  \
    hash[((entry->length+a)*(entry->code+b)) % HashSize]=(HuffmanTable *) entry; \
    entry++; \
  } \
}

#define InputBit ( bit   ) 

Value:

{  \
  if ((mask & 0xff) == 0)  \
    {  \
      byte=ReadBlobByte(image);  \
      if (byte == EOF)  \
        break;  \
      mask=0x80;  \
    }  \
  runlength++;  \
  bit=(unsigned long) ((byte & mask) != 0 ? 0x01 : 0x00); \
  mask>>=1;  \
  if (bit != 0)  \
    runlength=0;  \
}

#define LZWClr   256UL

#define LZWEod   257UL

#define MaxLineExtent   36

#define MBHashA   293

#define MBHashB   2695

#define MBId   26

#define MWHashA   3510

#define MWHashB   1178

#define MWId   24

#define OutputBit ( count   ) 

Value:

{  \
  if (count > 0)  \
    byte=byte | bit;  \
  bit>>=1;  \
  if ((int) (bit & 0xff) == 0)   \
    {  \
      if (LocaleCompare(image_info->magick,"FAX") == 0) \
        (void) WriteBlobByte(image,(unsigned char) byte);  \
      else \
        Ascii85Encode(image,byte); \
      byte='\0';  \
      bit=(unsigned char) 0x80;  \
    }  \
}

#define OutputCode ( code   ) 

Value:

{ \
    accumulator+=code << (32-code_width-number_bits); \
    number_bits+=code_width; \
    while (number_bits >= 8) \
    { \
        (void) WriteBlobByte(image,(unsigned char) (accumulator >> 24)); \
        accumulator=accumulator << 8; \
        number_bits-=8; \
    } \
}

#define TBId   25

#define TWId   23

Function Documentation

MagickExport void Ascii85Encode ( Image *  image,
const unsigned char  code 
)

MagickExport void Ascii85Flush ( Image *  image  ) 

MagickExport void Ascii85Initialize ( Image *  image  ) 

static char* Ascii85Tuple ( unsigned char *  data  )  [static]

MagickExport MagickBooleanType Huffman2DEncodeImage ( const ImageInfo *  image_info,
Image *  image 
)

MagickExport MagickBooleanType HuffmanDecodeImage ( Image *  image  ) 

MagickExport MagickBooleanType HuffmanEncodeImage ( const ImageInfo *  image_info,
Image *  image 
)

MagickExport MagickBooleanType LZWEncodeImage ( Image *  image,
const size_t  length,
unsigned char *  pixels 
)

static size_t MagickMax ( const size_t  x,
const size_t  y 
) [inline, static]

static size_t MagickMin ( const size_t  x,
const size_t  y 
) [inline, static]

MagickExport MagickBooleanType PackbitsEncodeImage ( Image *  image,
const size_t  length,
unsigned char *  pixels 
)

MagickExport MagickBooleanType ZLIBEncodeImage ( Image *  image,
const size_t  length,
unsigned char *  pixels 
)

Variable Documentation

const HuffmanTable EXTable[] [static]

Initial value:

  {
    { EXId, 0x08, 11, 1792 }, { EXId, 0x0c, 11, 1856 },
    { EXId, 0x0d, 11, 1920 }, { EXId, 0x12, 12, 1984 },
    { EXId, 0x13, 12, 2048 }, { EXId, 0x14, 12, 2112 },
    { EXId, 0x15, 12, 2176 }, { EXId, 0x16, 12, 2240 },
    { EXId, 0x17, 12, 2304 }, { EXId, 0x1c, 12, 2368 },
    { EXId, 0x1d, 12, 2432 }, { EXId, 0x1e, 12, 2496 },
    { EXId, 0x1f, 12, 2560 }, { EXId, 0x00, 0, 0 }
  }

const HuffmanTable MBTable[] [static]

Initial value:

  {
    { MBId, 0x0f, 10, 64 }, { MBId, 0xc8, 12, 128 },
    { MBId, 0xc9, 12, 192 }, { MBId, 0x5b, 12, 256 },
    { MBId, 0x33, 12, 320 }, { MBId, 0x34, 12, 384 },
    { MBId, 0x35, 12, 448 }, { MBId, 0x6c, 13, 512 },
    { MBId, 0x6d, 13, 576 }, { MBId, 0x4a, 13, 640 },
    { MBId, 0x4b, 13, 704 }, { MBId, 0x4c, 13, 768 },
    { MBId, 0x4d, 13, 832 }, { MBId, 0x72, 13, 896 },
    { MBId, 0x73, 13, 960 }, { MBId, 0x74, 13, 1024 },
    { MBId, 0x75, 13, 1088 }, { MBId, 0x76, 13, 1152 },
    { MBId, 0x77, 13, 1216 }, { MBId, 0x52, 13, 1280 },
    { MBId, 0x53, 13, 1344 }, { MBId, 0x54, 13, 1408 },
    { MBId, 0x55, 13, 1472 }, { MBId, 0x5a, 13, 1536 },
    { MBId, 0x5b, 13, 1600 }, { MBId, 0x64, 13, 1664 },
    { MBId, 0x65, 13, 1728 }, { MBId, 0x00, 0, 0 }
  }

const HuffmanTable MWTable[] [static]

Initial value:

  {
    { MWId, 0x1b, 5, 64 }, { MWId, 0x12, 5, 128 },
    { MWId, 0x17, 6, 192 }, { MWId, 0x37, 7, 256 },
    { MWId, 0x36, 8, 320 }, { MWId, 0x37, 8, 384 },
    { MWId, 0x64, 8, 448 }, { MWId, 0x65, 8, 512 },
    { MWId, 0x68, 8, 576 }, { MWId, 0x67, 8, 640 },
    { MWId, 0xcc, 9, 704 }, { MWId, 0xcd, 9, 768 },
    { MWId, 0xd2, 9, 832 }, { MWId, 0xd3, 9, 896 },
    { MWId, 0xd4, 9, 960 }, { MWId, 0xd5, 9, 1024 },
    { MWId, 0xd6, 9, 1088 }, { MWId, 0xd7, 9, 1152 },
    { MWId, 0xd8, 9, 1216 }, { MWId, 0xd9, 9, 1280 },
    { MWId, 0xda, 9, 1344 }, { MWId, 0xdb, 9, 1408 },
    { MWId, 0x98, 9, 1472 }, { MWId, 0x99, 9, 1536 },
    { MWId, 0x9a, 9, 1600 }, { MWId, 0x18, 6, 1664 },
    { MWId, 0x9b, 9, 1728 }, { MWId, 0x00, 0, 0 }
  }

const HuffmanTable TBTable[] [static]

Initial value:

  {
    { TBId, 0x37, 10, 0 }, { TBId, 0x02, 3, 1 }, { TBId, 0x03, 2, 2 },
    { TBId, 0x02, 2, 3 }, { TBId, 0x03, 3, 4 }, { TBId, 0x03, 4, 5 },
    { TBId, 0x02, 4, 6 }, { TBId, 0x03, 5, 7 }, { TBId, 0x05, 6, 8 },
    { TBId, 0x04, 6, 9 }, { TBId, 0x04, 7, 10 }, { TBId, 0x05, 7, 11 },
    { TBId, 0x07, 7, 12 }, { TBId, 0x04, 8, 13 }, { TBId, 0x07, 8, 14 },
    { TBId, 0x18, 9, 15 }, { TBId, 0x17, 10, 16 }, { TBId, 0x18, 10, 17 },
    { TBId, 0x08, 10, 18 }, { TBId, 0x67, 11, 19 }, { TBId, 0x68, 11, 20 },
    { TBId, 0x6c, 11, 21 }, { TBId, 0x37, 11, 22 }, { TBId, 0x28, 11, 23 },
    { TBId, 0x17, 11, 24 }, { TBId, 0x18, 11, 25 }, { TBId, 0xca, 12, 26 },
    { TBId, 0xcb, 12, 27 }, { TBId, 0xcc, 12, 28 }, { TBId, 0xcd, 12, 29 },
    { TBId, 0x68, 12, 30 }, { TBId, 0x69, 12, 31 }, { TBId, 0x6a, 12, 32 },
    { TBId, 0x6b, 12, 33 }, { TBId, 0xd2, 12, 34 }, { TBId, 0xd3, 12, 35 },
    { TBId, 0xd4, 12, 36 }, { TBId, 0xd5, 12, 37 }, { TBId, 0xd6, 12, 38 },
    { TBId, 0xd7, 12, 39 }, { TBId, 0x6c, 12, 40 }, { TBId, 0x6d, 12, 41 },
    { TBId, 0xda, 12, 42 }, { TBId, 0xdb, 12, 43 }, { TBId, 0x54, 12, 44 },
    { TBId, 0x55, 12, 45 }, { TBId, 0x56, 12, 46 }, { TBId, 0x57, 12, 47 },
    { TBId, 0x64, 12, 48 }, { TBId, 0x65, 12, 49 }, { TBId, 0x52, 12, 50 },
    { TBId, 0x53, 12, 51 }, { TBId, 0x24, 12, 52 }, { TBId, 0x37, 12, 53 },
    { TBId, 0x38, 12, 54 }, { TBId, 0x27, 12, 55 }, { TBId, 0x28, 12, 56 },
    { TBId, 0x58, 12, 57 }, { TBId, 0x59, 12, 58 }, { TBId, 0x2b, 12, 59 },
    { TBId, 0x2c, 12, 60 }, { TBId, 0x5a, 12, 61 }, { TBId, 0x66, 12, 62 },
    { TBId, 0x67, 12, 63 }, { TBId, 0x00, 0, 0 }
  }

const HuffmanTable TWTable[] [static]

Initial value:

  {
    { TWId, 0x35, 8, 0 }, { TWId, 0x07, 6, 1 }, { TWId, 0x07, 4, 2 },
    { TWId, 0x08, 4, 3 }, { TWId, 0x0b, 4, 4 }, { TWId, 0x0c, 4, 5 },
    { TWId, 0x0e, 4, 6 }, { TWId, 0x0f, 4, 7 }, { TWId, 0x13, 5, 8 },
    { TWId, 0x14, 5, 9 }, { TWId, 0x07, 5, 10 }, { TWId, 0x08, 5, 11 },
    { TWId, 0x08, 6, 12 }, { TWId, 0x03, 6, 13 }, { TWId, 0x34, 6, 14 },
    { TWId, 0x35, 6, 15 }, { TWId, 0x2a, 6, 16 }, { TWId, 0x2b, 6, 17 },
    { TWId, 0x27, 7, 18 }, { TWId, 0x0c, 7, 19 }, { TWId, 0x08, 7, 20 },
    { TWId, 0x17, 7, 21 }, { TWId, 0x03, 7, 22 }, { TWId, 0x04, 7, 23 },
    { TWId, 0x28, 7, 24 }, { TWId, 0x2b, 7, 25 }, { TWId, 0x13, 7, 26 },
    { TWId, 0x24, 7, 27 }, { TWId, 0x18, 7, 28 }, { TWId, 0x02, 8, 29 },
    { TWId, 0x03, 8, 30 }, { TWId, 0x1a, 8, 31 }, { TWId, 0x1b, 8, 32 },
    { TWId, 0x12, 8, 33 }, { TWId, 0x13, 8, 34 }, { TWId, 0x14, 8, 35 },
    { TWId, 0x15, 8, 36 }, { TWId, 0x16, 8, 37 }, { TWId, 0x17, 8, 38 },
    { TWId, 0x28, 8, 39 }, { TWId, 0x29, 8, 40 }, { TWId, 0x2a, 8, 41 },
    { TWId, 0x2b, 8, 42 }, { TWId, 0x2c, 8, 43 }, { TWId, 0x2d, 8, 44 },
    { TWId, 0x04, 8, 45 }, { TWId, 0x05, 8, 46 }, { TWId, 0x0a, 8, 47 },
    { TWId, 0x0b, 8, 48 }, { TWId, 0x52, 8, 49 }, { TWId, 0x53, 8, 50 },
    { TWId, 0x54, 8, 51 }, { TWId, 0x55, 8, 52 }, { TWId, 0x24, 8, 53 },
    { TWId, 0x25, 8, 54 }, { TWId, 0x58, 8, 55 }, { TWId, 0x59, 8, 56 },
    { TWId, 0x5a, 8, 57 }, { TWId, 0x5b, 8, 58 }, { TWId, 0x4a, 8, 59 },
    { TWId, 0x4b, 8, 60 }, { TWId, 0x32, 8, 61 }, { TWId, 0x33, 8, 62 },
    { TWId, 0x34, 8, 63 }, { TWId, 0x00, 0, 0 }
  }

Generated on Sat Jan 26 14:50:29 2008 for MagickCore by  doxygen 1.5.4