lodepng.h

Defines

LODEPNG_COMPILE_ZLIB

LODEPNG_COMPILE_PNG

LODEPNG_COMPILE_DECODER

LODEPNG_COMPILE_ENCODER

LODEPNG_COMPILE_DISK

LODEPNG_COMPILE_ANCILLARY_CHUNKS

LODEPNG_COMPILE_ERROR_TEXT

LODEPNG_COMPILE_ALLOCATORS

LODEPNG_COMPILE_CRC

Typedefs

typedef enum LodePNGColorType LodePNGColorType

typedef struct LodePNGDecompressSettings LodePNGDecompressSettings

typedef struct LodePNGCompressSettings LodePNGCompressSettings

typedef struct LodePNGColorMode LodePNGColorMode

typedef struct LodePNGTime LodePNGTime

typedef struct LodePNGInfo LodePNGInfo

typedef struct LodePNGDecoderSettings LodePNGDecoderSettings

typedef enum LodePNGFilterStrategy LodePNGFilterStrategy

typedef struct LodePNGColorStats LodePNGColorStats

typedef struct LodePNGEncoderSettings LodePNGEncoderSettings

typedef struct LodePNGState LodePNGState

Enums

enum LodePNGColorType

Values:

enumerator LCT_GREY

enumerator LCT_RGB

enumerator LCT_PALETTE

enumerator LCT_GREY_ALPHA

enumerator LCT_RGBA

enumerator LCT_MAX_OCTET_VALUE

enum LodePNGFilterStrategy

Values:

enumerator LFS_ZERO

enumerator LFS_ONE

enumerator LFS_TWO

enumerator LFS_THREE

enumerator LFS_FOUR

enumerator LFS_MINSUM

enumerator LFS_ENTROPY

enumerator LFS_BRUTE_FORCE

enumerator LFS_PREDEFINED

Functions

unsigned lodepng_decode_memory(unsigned char **out, unsigned *w, unsigned *h, const unsigned char *in, size_t insize, LodePNGColorType colortype, unsigned bitdepth)

unsigned lodepng_decode32(unsigned char **out, unsigned *w, unsigned *h, const unsigned char *in, size_t insize)

unsigned lodepng_decode24(unsigned char **out, unsigned *w, unsigned *h, const unsigned char *in, size_t insize)

unsigned lodepng_decode_file(unsigned char **out, unsigned *w, unsigned *h, const char *filename, LodePNGColorType colortype, unsigned bitdepth)

unsigned lodepng_decode32_file(unsigned char **out, unsigned *w, unsigned *h, const char *filename)

unsigned lodepng_decode24_file(unsigned char **out, unsigned *w, unsigned *h, const char *filename)

unsigned lodepng_encode_memory(unsigned char **out, size_t *outsize, const unsigned char *image, unsigned w, unsigned h, LodePNGColorType colortype, unsigned bitdepth)

unsigned lodepng_encode32(unsigned char **out, size_t *outsize, const unsigned char *image, unsigned w, unsigned h)

unsigned lodepng_encode24(unsigned char **out, size_t *outsize, const unsigned char *image, unsigned w, unsigned h)

unsigned lodepng_encode_file(const char *filename, const unsigned char *image, unsigned w, unsigned h, LodePNGColorType colortype, unsigned bitdepth)

unsigned lodepng_encode32_file(const char *filename, const unsigned char *image, unsigned w, unsigned h)

unsigned lodepng_encode24_file(const char *filename, const unsigned char *image, unsigned w, unsigned h)

const char *lodepng_error_text(unsigned code)

void lodepng_decompress_settings_init(LodePNGDecompressSettings *settings)

void lodepng_compress_settings_init(LodePNGCompressSettings *settings)

void lodepng_color_mode_init(LodePNGColorMode *info)

void lodepng_color_mode_cleanup(LodePNGColorMode *info)

unsigned lodepng_color_mode_copy(LodePNGColorMode *dest, const LodePNGColorMode *source)

LodePNGColorMode lodepng_color_mode_make(LodePNGColorType colortype, unsigned bitdepth)

void lodepng_palette_clear(LodePNGColorMode *info)

unsigned lodepng_palette_add(LodePNGColorMode *info, unsigned char r, unsigned char g, unsigned char b, unsigned char a)

unsigned lodepng_get_bpp(const LodePNGColorMode *info)

unsigned lodepng_get_channels(const LodePNGColorMode *info)

unsigned lodepng_is_greyscale_type(const LodePNGColorMode *info)

unsigned lodepng_is_alpha_type(const LodePNGColorMode *info)

unsigned lodepng_is_palette_type(const LodePNGColorMode *info)

unsigned lodepng_has_palette_alpha(const LodePNGColorMode *info)

unsigned lodepng_can_have_alpha(const LodePNGColorMode *info)

size_t lodepng_get_raw_size(unsigned w, unsigned h, const LodePNGColorMode *color)

void lodepng_info_init(LodePNGInfo *info)

void lodepng_info_cleanup(LodePNGInfo *info)

unsigned lodepng_info_copy(LodePNGInfo *dest, const LodePNGInfo *source)

unsigned lodepng_add_text(LodePNGInfo *info, const char *key, const char *str)

void lodepng_clear_text(LodePNGInfo *info)

unsigned lodepng_add_itext(LodePNGInfo *info, const char *key, const char *langtag, const char *transkey, const char *str)

void lodepng_clear_itext(LodePNGInfo *info)

unsigned lodepng_set_icc(LodePNGInfo *info, const char *name, const unsigned char *profile, unsigned profile_size)

void lodepng_clear_icc(LodePNGInfo *info)

unsigned lodepng_convert(unsigned char *out, const unsigned char *in, const LodePNGColorMode *mode_out, const LodePNGColorMode *mode_in, unsigned w, unsigned h)

void lodepng_decoder_settings_init(LodePNGDecoderSettings *settings)

void lodepng_color_stats_init(LodePNGColorStats *stats)

unsigned lodepng_compute_color_stats(LodePNGColorStats *stats, const unsigned char *image, unsigned w, unsigned h, const LodePNGColorMode *mode_in)

void lodepng_encoder_settings_init(LodePNGEncoderSettings *settings)

void lodepng_state_init(LodePNGState *state)

void lodepng_state_cleanup(LodePNGState *state)

void lodepng_state_copy(LodePNGState *dest, const LodePNGState *source)

unsigned lodepng_decode(unsigned char **out, unsigned *w, unsigned *h, LodePNGState *state, const unsigned char *in, size_t insize)

unsigned lodepng_inspect(unsigned *w, unsigned *h, LodePNGState *state, const unsigned char *in, size_t insize)

unsigned lodepng_inspect_chunk(LodePNGState *state, size_t pos, const unsigned char *in, size_t insize)

unsigned lodepng_encode(unsigned char **out, size_t *outsize, const unsigned char *image, unsigned w, unsigned h, LodePNGState *state)

unsigned lodepng_chunk_length(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 char lodepng_chunk_ancillary(const unsigned char *chunk)

unsigned char lodepng_chunk_private(const unsigned char *chunk)

unsigned char lodepng_chunk_safetocopy(const unsigned char *chunk)

unsigned char *lodepng_chunk_data(unsigned char *chunk)

const unsigned char *lodepng_chunk_data_const(const unsigned char *chunk)

unsigned lodepng_chunk_check_crc(const unsigned char *chunk)

void lodepng_chunk_generate_crc(unsigned char *chunk)

unsigned char *lodepng_chunk_next(unsigned char *chunk, unsigned char *end)

const unsigned char *lodepng_chunk_next_const(const unsigned char *chunk, const unsigned char *end)

unsigned char *lodepng_chunk_find(unsigned char *chunk, unsigned char *end, const char type[5])

const unsigned char *lodepng_chunk_find_const(const unsigned char *chunk, const unsigned char *end, const char type[5])

unsigned lodepng_chunk_append(unsigned char **out, size_t *outsize, const unsigned char *chunk)

unsigned lodepng_chunk_create(unsigned char **out, size_t *outsize, size_t length, const char *type, const unsigned char *data)

unsigned lodepng_crc32(const unsigned char *buf, size_t len)

unsigned lodepng_inflate(unsigned char **out, size_t *outsize, const unsigned char *in, size_t insize, const LodePNGDecompressSettings *settings)

unsigned lodepng_zlib_decompress(unsigned char **out, size_t *outsize, const unsigned char *in, size_t insize, const LodePNGDecompressSettings *settings)

unsigned lodepng_zlib_compress(unsigned char **out, size_t *outsize, const unsigned char *in, size_t insize, const LodePNGCompressSettings *settings)

unsigned lodepng_huffman_code_lengths(unsigned *lengths, const unsigned *frequencies, size_t numcodes, unsigned maxbitlen)

unsigned lodepng_deflate(unsigned char **out, size_t *outsize, const unsigned char *in, size_t insize, const LodePNGCompressSettings *settings)

unsigned lodepng_load_file(unsigned char **out, size_t *outsize, const char *filename)

unsigned lodepng_save_file(const unsigned char *buffer, size_t buffersize, const char *filename)

Variables

const char *LODEPNG_VERSION_STRING

const LodePNGDecompressSettings lodepng_default_decompress_settings

const LodePNGCompressSettings lodepng_default_compress_settings

struct LodePNGDecompressSettings

Public Members

unsigned ignore_adler32

unsigned ignore_nlen

size_t max_output_size

unsigned (*custom_zlib)(unsigned char**, size_t*, const unsigned char*, size_t, const LodePNGDecompressSettings*)

unsigned (*custom_inflate)(unsigned char**, size_t*, const unsigned char*, size_t, const LodePNGDecompressSettings*)

const void *custom_context

struct LodePNGCompressSettings

Public Members

unsigned btype

unsigned use_lz77

unsigned windowsize

unsigned minmatch

unsigned nicematch

unsigned lazymatching

unsigned (*custom_zlib)(unsigned char**, size_t*, const unsigned char*, size_t, const LodePNGCompressSettings*)

unsigned (*custom_deflate)(unsigned char**, size_t*, const unsigned char*, size_t, const LodePNGCompressSettings*)

const void *custom_context

struct LodePNGColorMode

Public Members

LodePNGColorType colortype

unsigned bitdepth

unsigned char *palette

size_t palettesize

unsigned key_defined

unsigned key_r

unsigned key_g

unsigned key_b

struct LodePNGTime

Public Members

unsigned year

unsigned month

unsigned day

unsigned hour

unsigned minute

unsigned second

struct LodePNGInfo

Public Members

unsigned compression_method

unsigned filter_method

unsigned interlace_method

LodePNGColorMode color

unsigned background_defined

unsigned background_r

unsigned background_g

unsigned background_b

size_t text_num

char **text_keys

char **text_strings

size_t itext_num

char **itext_keys

char **itext_langtags

char **itext_transkeys

char **itext_strings

unsigned time_defined

LodePNGTime time

unsigned phys_defined

unsigned phys_x

unsigned phys_y

unsigned phys_unit

unsigned gama_defined

unsigned gama_gamma

unsigned chrm_defined

unsigned chrm_white_x

unsigned chrm_white_y

unsigned chrm_red_x

unsigned chrm_red_y

unsigned chrm_green_x

unsigned chrm_green_y

unsigned chrm_blue_x

unsigned chrm_blue_y

unsigned srgb_defined

unsigned srgb_intent

unsigned iccp_defined

char *iccp_name

unsigned char *iccp_profile

unsigned iccp_profile_size

unsigned sbit_defined

unsigned sbit_r

unsigned sbit_g

unsigned sbit_b

unsigned sbit_a

unsigned char *unknown_chunks_data[3]

size_t unknown_chunks_size[3]

struct LodePNGDecoderSettings

Public Members

LodePNGDecompressSettings zlibsettings

unsigned ignore_crc

unsigned ignore_critical

unsigned ignore_end

unsigned color_convert

unsigned read_text_chunks

unsigned remember_unknown_chunks

size_t max_text_size

size_t max_icc_size

struct LodePNGColorStats

Public Members

unsigned colored

unsigned key

unsigned short key_r

unsigned short key_g

unsigned short key_b

unsigned alpha

unsigned numcolors

unsigned char palette[1024]

unsigned bits

size_t numpixels

unsigned allow_palette

unsigned allow_greyscale

struct LodePNGEncoderSettings

Public Members

LodePNGCompressSettings zlibsettings

unsigned auto_convert

unsigned filter_palette_zero

LodePNGFilterStrategy filter_strategy

const unsigned char *predefined_filters

unsigned force_palette

unsigned add_id

unsigned text_compression

struct LodePNGState

Public Members

LodePNGDecoderSettings decoder

LodePNGEncoderSettings encoder

LodePNGColorMode info_raw

LodePNGInfo info_png

unsigned error