Microchip® Advanced Software Framework

Data Structures | Macros | Typedefs | Functions | Variables
lodepng.c File Reference
#include "lodepng.h"

Data Structures

struct  HuffmanTree
 
struct  ucvector
 
struct  uivector
 

Macros

#define FIRST_LENGTH_CODE_INDEX   257
 
#define LAST_LENGTH_CODE_INDEX   285
 
#define NUM_CODE_LENGTH_CODES   19 /*the code length codes. 0-15: code lengths, 16: copy previous 3-6 times, 17: 3-10 zeros, 18: 11-138 zeros*/
 
#define NUM_DEFLATE_CODE_SYMBOLS   288 /*256 literals, the end code, some length codes, and 2 unused codes*/
 
#define NUM_DISTANCE_SYMBOLS   32 /*the distance codes have their own symbols, 30 used, 2 unused*/
 
#define VERSION_STRING   "20100314"
 

Typedefs

typedef struct HuffmanTree HuffmanTree
 
typedef struct ucvector ucvector
 
typedef struct uivector uivector
 

Functions

static void Adam7_deinterlace (unsigned char *out, const unsigned char *in, unsigned w, unsigned h, unsigned bpp)
 
static void Adam7_getpassvalues (unsigned passw[7], unsigned passh[7], size_t filter_passstart[8], size_t padded_passstart[8], size_t passstart[8], unsigned w, unsigned h, unsigned bpp)
 
static unsigned adler32 (const unsigned char *data, unsigned len)
 
static unsigned checkColorValidity (unsigned colorType, unsigned bd)
 
static unsigned Crc32_crc (const unsigned char *buf, size_t len)
 
static void Crc32_make_crc_table (void)
 
static unsigned Crc32_update_crc (const unsigned char *buf, unsigned crc, size_t len)
 
static void decodeGeneric (LodePNG_Decoder *decoder, unsigned char **out, size_t *outsize, const unsigned char *in, size_t size)
 
static unsigned generateDistanceTree (HuffmanTree *tree)
 
static unsigned generateFixedTree (HuffmanTree *tree)
 
static unsigned getBpp (unsigned colorType, unsigned bitDepth)
 
static unsigned getNumColorChannels (unsigned colorType)
 
static unsigned getTreeInflateDynamic (HuffmanTree *codetree, HuffmanTree *codetreeD, HuffmanTree *codelengthcodetree, const unsigned char *in, size_t *bp, size_t inlength)
 
static void getTreeInflateFixed (HuffmanTree *tree, HuffmanTree *treeD)
 
static unsigned huffmanDecodeSymbol (unsigned int *error, const unsigned char *in, size_t *bp, const HuffmanTree *codetree, size_t inlength)
 
static void HuffmanTree_cleanup (HuffmanTree *tree)
 
static unsigned HuffmanTree_decode (const HuffmanTree *tree, unsigned *decoded, unsigned *result, unsigned *treepos, unsigned char bit)
 
static void HuffmanTree_init (HuffmanTree *tree)
 
static unsigned HuffmanTree_make2DTree (HuffmanTree *tree)
 
static unsigned HuffmanTree_makeFromLengths (HuffmanTree *tree, const unsigned *bitlen, size_t numcodes, unsigned maxbitlen)
 
static unsigned HuffmanTree_makeFromLengths2 (HuffmanTree *tree)
 
static unsigned inflateHuffmanBlock (ucvector *out, const unsigned char *in, size_t *bp, size_t *pos, size_t inlength, unsigned btype)
 
static unsigned inflateNoCompression (ucvector *out, const unsigned char *in, size_t *bp, size_t *pos, size_t inlength)
 
unsigned LodeFlate_inflate (ucvector *out, const unsigned char *in, size_t insize, size_t inpos)
 
unsigned LodePNG_append_chunk (unsigned char **out, size_t *outlength, const unsigned char *chunk)
 
unsigned LodePNG_chunk_check_crc (const unsigned char *chunk)
 
unsigned char LodePNG_chunk_critical (const unsigned char *chunk)
 
unsigned char * LodePNG_chunk_data (unsigned char *chunk)
 
const unsigned char * LodePNG_chunk_data_const (const unsigned char *chunk)
 
void LodePNG_chunk_generate_crc (unsigned char *chunk)
 
unsigned LodePNG_chunk_length (const unsigned char *chunk)
 
unsigned char * LodePNG_chunk_next (unsigned char *chunk)
 
const unsigned char * LodePNG_chunk_next_const (const unsigned char *chunk)
 
unsigned char LodePNG_chunk_private (const unsigned char *chunk)
 
unsigned char LodePNG_chunk_safetocopy (const unsigned char *chunk)
 
void LodePNG_chunk_type (char type[5], const unsigned char *chunk)
 
unsigned char LodePNG_chunk_type_equals (const unsigned char *chunk, const char *type)
 
unsigned LodePNG_convert (unsigned char *out, const unsigned char *in, LodePNG_InfoColor *infoOut, LodePNG_InfoColor *infoIn, unsigned w, unsigned h)
 
unsigned LodePNG_create_chunk (unsigned char **out, size_t *outlength, unsigned length, const char *type, const unsigned char *data)
 
void LodePNG_decode (LodePNG_Decoder *decoder, unsigned char **out, size_t *outsize, const unsigned char *in, size_t insize)
 
unsigned LodePNG_decode32 (unsigned char **out, unsigned *w, unsigned *h, const unsigned char *in, size_t insize)
 
void LodePNG_Decoder_cleanup (LodePNG_Decoder *decoder)
 
void LodePNG_Decoder_copy (LodePNG_Decoder *dest, const LodePNG_Decoder *source)
 
void LodePNG_Decoder_init (LodePNG_Decoder *decoder)
 
void LodePNG_DecodeSettings_init (LodePNG_DecodeSettings *settings)
 
static unsigned LodePNG_decompress (unsigned char **out, size_t *outsize, const unsigned char *in, size_t insize, const LodeZlib_DecompressSettings *settings)
 
unsigned LodePNG_InfoColor_addPalette (LodePNG_InfoColor *info, unsigned char r, unsigned char g, unsigned char b, unsigned char a)
 
void LodePNG_InfoColor_cleanup (LodePNG_InfoColor *info)
 
void LodePNG_InfoColor_clearPalette (LodePNG_InfoColor *info)
 
unsigned LodePNG_InfoColor_copy (LodePNG_InfoColor *dest, const LodePNG_InfoColor *source)
 
unsigned LodePNG_InfoColor_equal (const LodePNG_InfoColor *info1, const LodePNG_InfoColor *info2)
 
unsigned LodePNG_InfoColor_getBpp (const LodePNG_InfoColor *info)
 
unsigned LodePNG_InfoColor_getChannels (const LodePNG_InfoColor *info)
 
void LodePNG_InfoColor_init (LodePNG_InfoColor *info)
 
unsigned LodePNG_InfoColor_isAlphaType (const LodePNG_InfoColor *info)
 
unsigned LodePNG_InfoColor_isGreyscaleType (const LodePNG_InfoColor *info)
 
void LodePNG_InfoPng_cleanup (LodePNG_InfoPng *info)
 
unsigned LodePNG_InfoPng_copy (LodePNG_InfoPng *dest, const LodePNG_InfoPng *source)
 
void LodePNG_InfoPng_init (LodePNG_InfoPng *info)
 
void LodePNG_InfoPng_swap (LodePNG_InfoPng *a, LodePNG_InfoPng *b)
 
void LodePNG_InfoRaw_cleanup (LodePNG_InfoRaw *info)
 
unsigned LodePNG_InfoRaw_copy (LodePNG_InfoRaw *dest, const LodePNG_InfoRaw *source)
 
void LodePNG_InfoRaw_init (LodePNG_InfoRaw *info)
 
void LodePNG_inspect (LodePNG_Decoder *decoder, const unsigned char *in, size_t inlength)
 
unsigned LodePNG_IText_add (LodePNG_IText *text, const char *key, const char *langtag, const char *transkey, const char *str)
 
void LodePNG_IText_cleanup (LodePNG_IText *text)
 
void LodePNG_IText_clear (LodePNG_IText *text)
 
unsigned LodePNG_IText_copy (LodePNG_IText *dest, const LodePNG_IText *source)
 
void LodePNG_IText_init (LodePNG_IText *text)
 
static unsigned LodePNG_read32bitInt (const unsigned char *buffer)
 
static void LodePNG_set32bitInt (unsigned char *buffer, unsigned value)
 
unsigned LodePNG_Text_add (LodePNG_Text *text, const char *key, const char *str)
 
void LodePNG_Text_cleanup (LodePNG_Text *text)
 
void LodePNG_Text_clear (LodePNG_Text *text)
 
unsigned LodePNG_Text_copy (LodePNG_Text *dest, const LodePNG_Text *source)
 
void LodePNG_Text_init (LodePNG_Text *text)
 
void LodePNG_UnknownChunks_cleanup (LodePNG_UnknownChunks *chunks)
 
unsigned LodePNG_UnknownChunks_copy (LodePNG_UnknownChunks *dest, const LodePNG_UnknownChunks *src)
 
void LodePNG_UnknownChunks_init (LodePNG_UnknownChunks *chunks)
 
unsigned LodeZlib_decompress (unsigned char **out, size_t *outsize, const unsigned char *in, size_t insize, const LodeZlib_DecompressSettings *settings)
 
void LodeZlib_DecompressSettings_init (LodeZlib_DecompressSettings *settings)
 
unsigned LodeZlib_read32bitInt (const unsigned char *buffer)
 
static int paethPredictor (int a, int b, int c)
 
static unsigned postProcessScanlines (unsigned char *out, unsigned char *in, const LodePNG_InfoPng *infoPng)
 
static unsigned char readBitFromReversedStream (size_t *bitpointer, const unsigned char *bitstream)
 
static unsigned char readBitFromStream (size_t *bitpointer, const unsigned char *bitstream)
 
static unsigned readBitsFromReversedStream (size_t *bitpointer, const unsigned char *bitstream, size_t nbits)
 
static unsigned readBitsFromStream (size_t *bitpointer, const unsigned char *bitstream, size_t nbits)
 
static void removePaddingBits (unsigned char *out, const unsigned char *in, size_t olinebits, size_t ilinebits, unsigned h)
 
static void setBitOfReversedStream (size_t *bitpointer, unsigned char *bitstream, unsigned char bit)
 
static void setBitOfReversedStream0 (size_t *bitpointer, unsigned char *bitstream, unsigned char bit)
 
static void string_cleanup (char **out)
 
static void string_init (char **out)
 
static unsigned string_resize (char **out, size_t size)
 
static void string_set (char **out, const char *in)
 
static void ucvector_cleanup (void *p)
 
static void ucvector_init (ucvector *p)
 
static void ucvector_init_buffer (ucvector *p, unsigned char *buffer, size_t size)
 
static unsigned ucvector_push_back (ucvector *p, unsigned char c)
 
static unsigned ucvector_resize (ucvector *p, size_t size)
 
static unsigned ucvector_resizev (ucvector *p, size_t size, unsigned char value)
 
static void uivector_cleanup (void *p)
 
static void uivector_init (uivector *p)
 
static unsigned uivector_resize (uivector *p, size_t size)
 
static unsigned uivector_resizev (uivector *p, size_t size, unsigned value)
 
static unsigned unfilter (unsigned char *out, const unsigned char *in, unsigned w, unsigned h, unsigned bpp)
 
static unsigned unfilterScanline (unsigned char *recon, const unsigned char *scanline, const unsigned char *precon, size_t bytewidth, unsigned char filterType, size_t length)
 
static unsigned update_adler32 (unsigned adler, const unsigned char *data, unsigned len)
 

Variables

static const unsigned ADAM7_DX [7] = { 8, 8, 4, 4, 2, 2, 1 }
 
static const unsigned ADAM7_DY [7] = { 8, 8, 8, 4, 4, 2, 2 }
 
static const unsigned ADAM7_IX [7] = { 0, 4, 0, 2, 0, 1, 0 }
 
static const unsigned ADAM7_IY [7] = { 0, 0, 4, 0, 2, 0, 1 }
 
static const unsigned CLCL [NUM_CODE_LENGTH_CODES] = {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}
 
static unsigned Crc32_crc_table [256]
 
static unsigned Crc32_crc_table_computed = 0
 
static const unsigned DISTANCEBASE [30] = {1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577}
 
static const unsigned DISTANCEEXTRA [30] = {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}
 
static const unsigned LENGTHBASE [29] = {3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258}
 
static const unsigned LENGTHEXTRA [29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0}
 
const LodeZlib_DecompressSettings LodeZlib_defaultDecompressSettings = {0}
 

#define FIRST_LENGTH_CODE_INDEX   257

Referenced by inflateHuffmanBlock().

#define LAST_LENGTH_CODE_INDEX   285

Referenced by inflateHuffmanBlock().

#define NUM_CODE_LENGTH_CODES   19 /*the code length codes. 0-15: code lengths, 16: copy previous 3-6 times, 17: 3-10 zeros, 18: 11-138 zeros*/

Referenced by getTreeInflateDynamic().

#define NUM_DEFLATE_CODE_SYMBOLS   288 /*256 literals, the end code, some length codes, and 2 unused codes*/

Referenced by generateFixedTree(), and getTreeInflateDynamic().

#define NUM_DISTANCE_SYMBOLS   32 /*the distance codes have their own symbols, 30 used, 2 unused*/

Referenced by generateDistanceTree(), and getTreeInflateDynamic().

#define VERSION_STRING   "20100314"

typedef struct HuffmanTree HuffmanTree
typedef struct ucvector ucvector
typedef struct uivector uivector

static void Adam7_deinterlace ( unsigned char *  out,
const unsigned char *  in,
unsigned  w,
unsigned  h,
unsigned  bpp 
)
static

References Adam7_getpassvalues(), b, i, readBitFromReversedStream(), setBitOfReversedStream0(), w, x, and y.

Referenced by postProcessScanlines().

static void Adam7_getpassvalues ( unsigned  passw[7],
unsigned  passh[7],
size_t  filter_passstart[8],
size_t  padded_passstart[8],
size_t  passstart[8],
unsigned  w,
unsigned  h,
unsigned  bpp 
)
static

References i.

Referenced by Adam7_deinterlace(), and postProcessScanlines().

static unsigned adler32 ( const unsigned char *  data,
unsigned  len 
)
static

References update_adler32().

Referenced by LodeZlib_decompress().

static unsigned checkColorValidity ( unsigned  colorType,
unsigned  bd 
)
static

Referenced by LodePNG_inspect().

static unsigned Crc32_crc ( const unsigned char *  buf,
size_t  len 
)
static

References Crc32_update_crc().

Referenced by LodePNG_chunk_check_crc(), LodePNG_chunk_generate_crc(), and LodePNG_inspect().

static void Crc32_make_crc_table ( void  )
static

References c, and n.

Referenced by Crc32_update_crc().

static unsigned Crc32_update_crc ( const unsigned char *  buf,
unsigned  crc,
size_t  len 
)
static

References c, Crc32_make_crc_table(), and n.

Referenced by Crc32_crc().

static void decodeGeneric ( LodePNG_Decoder *  decoder,
unsigned char **  out,
size_t *  outsize,
const unsigned char *  in,
size_t  size 
)
static

References LodePNG_InfoPng::background_b, LodePNG_InfoPng::background_defined, LodePNG_InfoPng::background_g, LodePNG_InfoPng::background_r, LodePNG_InfoPng::color, LodePNG_InfoColor::colorType, data, ucvector::data, LodePNG_UnknownChunks::data, LodePNG_UnknownChunks::datasize, LodePNG_Time::day, LodePNG_Decoder::error, LodePNG_InfoPng::height, LodePNG_Time::hour, i, LodePNG_DecodeSettings::ignoreCrc, LodePNG_Decoder::infoPng, LodePNG_InfoPng::itext, key, LodePNG_InfoColor::key_b, LodePNG_InfoColor::key_defined, LodePNG_InfoColor::key_g, LodePNG_InfoColor::key_r, length, LodePNG_append_chunk(), LodePNG_chunk_check_crc(), LodePNG_chunk_critical(), LodePNG_chunk_data_const(), LodePNG_chunk_length(), LodePNG_chunk_next_const(), LodePNG_chunk_type_equals(), LodePNG_decompress(), LodePNG_InfoColor_getBpp(), LodePNG_inspect(), LodePNG_IText_add(), LodePNG_Text_add(), LodePNG_Time::minute, LodePNG_Time::month, LodePNG_InfoColor::palette, LodePNG_InfoColor::palettesize, LodePNG_InfoPng::phys_defined, LodePNG_InfoPng::phys_unit, LodePNG_InfoPng::phys_x, LodePNG_InfoPng::phys_y, postProcessScanlines(), LodePNG_DecodeSettings::readTextChunks, LodePNG_DecodeSettings::rememberUnknownChunks, scanlines, LodePNG_Time::second, LodePNG_Decoder::settings, ucvector::size, str, LodePNG_InfoPng::text, LodePNG_InfoPng::time, LodePNG_InfoPng::time_defined, ucvector_cleanup(), ucvector_init(), ucvector_push_back(), ucvector_resize(), ucvector_resizev(), LodePNG_InfoPng::unknown_chunks, LodePNG_InfoPng::width, LodePNG_Time::year, and LodePNG_DecodeSettings::zlibsettings.

Referenced by LodePNG_decode().

static unsigned generateDistanceTree ( HuffmanTree *  tree)
static

References uivector::data, error(), HuffmanTree_makeFromLengths(), i, NUM_DISTANCE_SYMBOLS, uivector_cleanup(), uivector_init(), and uivector_resize().

Referenced by getTreeInflateFixed().

static unsigned generateFixedTree ( HuffmanTree *  tree)
static

References uivector::data, error(), HuffmanTree_makeFromLengths(), i, NUM_DEFLATE_CODE_SYMBOLS, uivector_cleanup(), uivector_init(), and uivector_resize().

Referenced by getTreeInflateFixed().

static unsigned getBpp ( unsigned  colorType,
unsigned  bitDepth 
)
static

References getNumColorChannels().

Referenced by LodePNG_InfoColor_getBpp().

static unsigned getNumColorChannels ( unsigned  colorType)
static

Referenced by getBpp(), and LodePNG_InfoColor_getChannels().

static unsigned getTreeInflateDynamic ( HuffmanTree *  codetree,
HuffmanTree *  codetreeD,
HuffmanTree *  codelengthcodetree,
const unsigned char *  in,
size_t *  bp,
size_t  inlength 
)
static

References CLCL, uivector::data, error(), huffmanDecodeSymbol(), HuffmanTree_makeFromLengths(), i, n, NUM_CODE_LENGTH_CODES, NUM_DEFLATE_CODE_SYMBOLS, NUM_DISTANCE_SYMBOLS, readBitsFromStream(), uivector::size, uivector_cleanup(), uivector_init(), uivector_resize(), and uivector_resizev().

Referenced by inflateHuffmanBlock().

static void getTreeInflateFixed ( HuffmanTree *  tree,
HuffmanTree *  treeD 
)
static

References generateDistanceTree(), and generateFixedTree().

Referenced by inflateHuffmanBlock().

static unsigned huffmanDecodeSymbol ( unsigned int *  error,
const unsigned char *  in,
size_t *  bp,
const HuffmanTree *  codetree,
size_t  inlength 
)
static

References HuffmanTree_decode(), and readBitFromStream().

Referenced by getTreeInflateDynamic(), and inflateHuffmanBlock().

static void HuffmanTree_cleanup ( HuffmanTree *  tree)
static

References HuffmanTree::lengths, HuffmanTree::tree1d, HuffmanTree::tree2d, and uivector_cleanup().

Referenced by inflateHuffmanBlock().

static unsigned HuffmanTree_decode ( const HuffmanTree *  tree,
unsigned *  decoded,
unsigned *  result,
unsigned *  treepos,
unsigned char  bit 
)
static

References uivector::data, HuffmanTree::numcodes, and HuffmanTree::tree2d.

Referenced by huffmanDecodeSymbol().

static void HuffmanTree_init ( HuffmanTree *  tree)
static

References HuffmanTree::lengths, HuffmanTree::tree1d, HuffmanTree::tree2d, and uivector_init().

Referenced by inflateHuffmanBlock().

static unsigned HuffmanTree_make2DTree ( HuffmanTree *  tree)
static

References uivector::data, i, HuffmanTree::lengths, n, HuffmanTree::numcodes, HuffmanTree::tree1d, HuffmanTree::tree2d, and uivector_resize().

Referenced by HuffmanTree_makeFromLengths2().

static unsigned HuffmanTree_makeFromLengths ( HuffmanTree *  tree,
const unsigned *  bitlen,
size_t  numcodes,
unsigned  maxbitlen 
)
static

References uivector::data, HuffmanTree_makeFromLengths2(), i, HuffmanTree::lengths, HuffmanTree::maxbitlen, HuffmanTree::numcodes, and uivector_resize().

Referenced by generateDistanceTree(), generateFixedTree(), and getTreeInflateDynamic().

static unsigned HuffmanTree_makeFromLengths2 ( HuffmanTree *  tree)
static

References bits, uivector::data, error(), HuffmanTree_make2DTree(), HuffmanTree::lengths, HuffmanTree::maxbitlen, n, HuffmanTree::numcodes, HuffmanTree::tree1d, uivector_cleanup(), uivector_init(), uivector_resize(), and uivector_resizev().

Referenced by HuffmanTree_makeFromLengths().

static unsigned inflateHuffmanBlock ( ucvector *  out,
const unsigned char *  in,
size_t *  bp,
size_t *  pos,
size_t  inlength,
unsigned  btype 
)
static

References ucvector::data, DISTANCEBASE, DISTANCEEXTRA, error(), FIRST_LENGTH_CODE_INDEX, getTreeInflateDynamic(), getTreeInflateFixed(), huffmanDecodeSymbol(), HuffmanTree_cleanup(), HuffmanTree_init(), LAST_LENGTH_CODE_INDEX, length, LENGTHBASE, LENGTHEXTRA, readBitsFromStream(), ucvector::size, start, and ucvector_resize().

Referenced by LodeFlate_inflate().

static unsigned inflateNoCompression ( ucvector *  out,
const unsigned char *  in,
size_t *  bp,
size_t *  pos,
size_t  inlength 
)
static

References ucvector::data, error(), n, ucvector::size, and ucvector_resize().

Referenced by LodeFlate_inflate().

unsigned LodeFlate_inflate ( ucvector *  out,
const unsigned char *  in,
size_t  insize,
size_t  inpos 
)

References error(), inflateHuffmanBlock(), inflateNoCompression(), readBitFromStream(), and ucvector_resize().

Referenced by LodeZlib_decompress().

static unsigned LodePNG_decompress ( unsigned char **  out,
size_t *  outsize,
const unsigned char *  in,
size_t  insize,
const LodeZlib_DecompressSettings *  settings 
)
static

References LodeZlib_decompress().

Referenced by decodeGeneric().

unsigned LodePNG_InfoColor_equal ( const LodePNG_InfoColor *  info1,
const LodePNG_InfoColor *  info2 
)

References LodePNG_InfoColor::bitDepth, and LodePNG_InfoColor::colorType.

Referenced by LodePNG_convert(), and LodePNG_decode().

void LodePNG_InfoPng_swap ( LodePNG_InfoPng *  a,
LodePNG_InfoPng *  b 
)

References a(), b, and temp.

static unsigned LodePNG_read32bitInt ( const unsigned char *  buffer)
static

Referenced by LodePNG_chunk_check_crc(), LodePNG_chunk_length(), and LodePNG_inspect().

static void LodePNG_set32bitInt ( unsigned char *  buffer,
unsigned  value 
)
static

Referenced by LodePNG_chunk_generate_crc(), and LodePNG_create_chunk().

unsigned LodeZlib_read32bitInt ( const unsigned char *  buffer)

Referenced by LodeZlib_decompress().

static int paethPredictor ( int  a,
int  b,
int  c 
)
static

References a(), b, and c.

Referenced by unfilterScanline().

static unsigned postProcessScanlines ( unsigned char *  out,
unsigned char *  in,
const LodePNG_InfoPng *  infoPng 
)
static

References Adam7_deinterlace(), Adam7_getpassvalues(), LodePNG_InfoPng::color, error(), LodePNG_InfoPng::height, i, LodePNG_InfoPng::interlaceMethod, LodePNG_InfoColor_getBpp(), removePaddingBits(), unfilter(), w, and LodePNG_InfoPng::width.

Referenced by decodeGeneric().

static unsigned char readBitFromReversedStream ( size_t *  bitpointer,
const unsigned char *  bitstream 
)
static

Referenced by Adam7_deinterlace(), readBitsFromReversedStream(), and removePaddingBits().

static unsigned char readBitFromStream ( size_t *  bitpointer,
const unsigned char *  bitstream 
)
static

Referenced by huffmanDecodeSymbol(), LodeFlate_inflate(), and readBitsFromStream().

static unsigned readBitsFromReversedStream ( size_t *  bitpointer,
const unsigned char *  bitstream,
size_t  nbits 
)
static

References i, nbits, and readBitFromReversedStream().

Referenced by LodePNG_convert().

static unsigned readBitsFromStream ( size_t *  bitpointer,
const unsigned char *  bitstream,
size_t  nbits 
)
static

References i, nbits, and readBitFromStream().

Referenced by getTreeInflateDynamic(), and inflateHuffmanBlock().

static void removePaddingBits ( unsigned char *  out,
const unsigned char *  in,
size_t  olinebits,
size_t  ilinebits,
unsigned  h 
)
static

References readBitFromReversedStream(), setBitOfReversedStream(), x, and y.

Referenced by postProcessScanlines().

static void setBitOfReversedStream ( size_t *  bitpointer,
unsigned char *  bitstream,
unsigned char  bit 
)
static

Referenced by removePaddingBits().

static void setBitOfReversedStream0 ( size_t *  bitpointer,
unsigned char *  bitstream,
unsigned char  bit 
)
static

Referenced by Adam7_deinterlace().

static void string_cleanup ( char **  out)
static

References NULL.

Referenced by LodePNG_IText_clear(), and LodePNG_Text_clear().

static void string_init ( char **  out)
static

References NULL, and string_resize().

Referenced by LodePNG_IText_add(), and LodePNG_Text_add().

static unsigned string_resize ( char **  out,
size_t  size 
)
static

References data.

Referenced by string_init(), and string_set().

static void string_set ( char **  out,
const char *  in 
)
static

References i, and string_resize().

Referenced by LodePNG_IText_add(), and LodePNG_Text_add().

static void ucvector_cleanup ( void *  p)
static

References data, and NULL.

Referenced by decodeGeneric().

static void ucvector_init ( ucvector *  p)
static

References ucvector::allocsize, ucvector::data, NULL, and ucvector::size.

Referenced by decodeGeneric().

static void ucvector_init_buffer ( ucvector *  p,
unsigned char *  buffer,
size_t  size 
)
static

References ucvector::allocsize, buffer, ucvector::data, and ucvector::size.

Referenced by LodeZlib_decompress().

static unsigned ucvector_push_back ( ucvector *  p,
unsigned char  c 
)
static

References c, ucvector::data, ucvector::size, and ucvector_resize().

Referenced by decodeGeneric().

static unsigned ucvector_resize ( ucvector *  p,
size_t  size 
)
static

References ucvector::allocsize, data, ucvector::data, and ucvector::size.

Referenced by decodeGeneric(), inflateHuffmanBlock(), inflateNoCompression(), LodeFlate_inflate(), ucvector_push_back(), and ucvector_resizev().

static unsigned ucvector_resizev ( ucvector *  p,
size_t  size,
unsigned char  value 
)
static

References ucvector::data, i, ucvector::size, and ucvector_resize().

Referenced by decodeGeneric().

static void uivector_cleanup ( void *  p)
static

References data, and NULL.

Referenced by generateDistanceTree(), generateFixedTree(), getTreeInflateDynamic(), HuffmanTree_cleanup(), and HuffmanTree_makeFromLengths2().

static void uivector_init ( uivector *  p)
static

References uivector::allocsize, uivector::data, NULL, and uivector::size.

Referenced by generateDistanceTree(), generateFixedTree(), getTreeInflateDynamic(), HuffmanTree_init(), and HuffmanTree_makeFromLengths2().

static unsigned uivector_resize ( uivector *  p,
size_t  size 
)
static

References uivector::allocsize, data, uivector::data, and uivector::size.

Referenced by generateDistanceTree(), generateFixedTree(), getTreeInflateDynamic(), HuffmanTree_make2DTree(), HuffmanTree_makeFromLengths(), HuffmanTree_makeFromLengths2(), and uivector_resizev().

static unsigned uivector_resizev ( uivector *  p,
size_t  size,
unsigned  value 
)
static

References uivector::data, i, uivector::size, and uivector_resize().

Referenced by getTreeInflateDynamic(), and HuffmanTree_makeFromLengths2().

static unsigned unfilter ( unsigned char *  out,
const unsigned char *  in,
unsigned  w,
unsigned  h,
unsigned  bpp 
)
static

References error(), unfilterScanline(), and y.

Referenced by postProcessScanlines().

static unsigned unfilterScanline ( unsigned char *  recon,
const unsigned char *  scanline,
const unsigned char *  precon,
size_t  bytewidth,
unsigned char  filterType,
size_t  length 
)
static

References i, length, and paethPredictor().

Referenced by unfilter().

static unsigned update_adler32 ( unsigned  adler,
const unsigned char *  data,
unsigned  len 
)
static

Referenced by adler32().

const unsigned ADAM7_DX[7] = { 8, 8, 4, 4, 2, 2, 1 }
static
const unsigned ADAM7_DY[7] = { 8, 8, 8, 4, 4, 2, 2 }
static
const unsigned ADAM7_IX[7] = { 0, 4, 0, 2, 0, 1, 0 }
static
const unsigned ADAM7_IY[7] = { 0, 0, 4, 0, 2, 0, 1 }
static
const unsigned CLCL[NUM_CODE_LENGTH_CODES] = {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}
static

Referenced by getTreeInflateDynamic().

unsigned Crc32_crc_table[256]
static
unsigned Crc32_crc_table_computed = 0
static
const unsigned DISTANCEBASE[30] = {1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577}
static

Referenced by inflateHuffmanBlock().

const unsigned DISTANCEEXTRA[30] = {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}
static

Referenced by inflateHuffmanBlock().

const unsigned LENGTHBASE[29] = {3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258}
static

Referenced by inflateHuffmanBlock().

const unsigned LENGTHEXTRA[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0}
static

Referenced by inflateHuffmanBlock().

Generated on Sat Mar 5 2022 01:11:04 for UC3 A0/A1 by   doxygen 1.8.5