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Classes | Functions
pngwutil.c File Reference
#include "pngpriv.h"

Go to the source code of this file.

Classes

struct  compression_state

Functions

void PNGAPI png_save_uint_32 (png_bytep buf, png_uint_32 i)
void PNGAPI png_save_uint_16 (png_bytep buf, unsigned int i)
void PNGAPI png_write_sig (png_structrp png_ptr)
static void png_write_chunk_header (png_structrp png_ptr, png_uint_32 chunk_name, png_uint_32 length)
void PNGAPI png_write_chunk_start (png_structrp png_ptr, png_const_bytep chunk_string, png_uint_32 length)
void PNGAPI png_write_chunk_data (png_structrp png_ptr, png_const_bytep data, size_t length)
void PNGAPI png_write_chunk_end (png_structrp png_ptr)
static void png_write_complete_chunk (png_structrp png_ptr, png_uint_32 chunk_name, png_const_bytep data, size_t length)
void PNGAPI png_write_chunk (png_structrp png_ptr, png_const_bytep chunk_string, png_const_bytep data, size_t length)
static png_alloc_size_t png_image_size (png_structrp png_ptr)
static void optimize_cmf (png_bytep data, png_alloc_size_t data_size)
static int png_deflate_claim (png_structrp png_ptr, png_uint_32 owner, png_alloc_size_t data_size)
void png_free_buffer_list (png_structrp png_ptr, png_compression_bufferp *listp)
static void png_text_compress_init (compression_state *comp, png_const_bytep input, png_alloc_size_t input_len)
static int png_text_compress (png_structrp png_ptr, png_uint_32 chunk_name, compression_state *comp, png_uint_32 prefix_len)
static void png_write_compressed_data_out (png_structrp png_ptr, compression_state *comp)
void png_write_IHDR (png_structrp png_ptr, png_uint_32 width, png_uint_32 height, int bit_depth, int color_type, int compression_type, int filter_type, int interlace_type)
void png_write_PLTE (png_structrp png_ptr, png_const_colorp palette, png_uint_32 num_pal)
void png_compress_IDAT (png_structrp png_ptr, png_const_bytep input, png_alloc_size_t input_len, int flush)
void png_write_IEND (png_structrp png_ptr)
void png_write_gAMA_fixed (png_structrp png_ptr, png_fixed_point file_gamma)
void png_write_sRGB (png_structrp png_ptr, int srgb_intent)
void png_write_iCCP (png_structrp png_ptr, png_const_charp name, png_const_bytep profile)
void png_write_sPLT (png_structrp png_ptr, png_const_sPLT_tp spalette)
void png_write_sBIT (png_structrp png_ptr, png_const_color_8p sbit, int color_type)
void png_write_cHRM_fixed (png_structrp png_ptr, const png_xy *xy)
void png_write_tRNS (png_structrp png_ptr, png_const_bytep trans_alpha, png_const_color_16p tran, int num_trans, int color_type)
void png_write_bKGD (png_structrp png_ptr, png_const_color_16p back, int color_type)
void png_write_hIST (png_structrp png_ptr, png_const_uint_16p hist, int num_hist)
void png_write_tEXt (png_structrp png_ptr, png_const_charp key, png_const_charp text, size_t text_len)
void png_write_zTXt (png_structrp png_ptr, png_const_charp key, png_const_charp text, int compression)
void png_write_iTXt (png_structrp png_ptr, int compression, png_const_charp key, png_const_charp lang, png_const_charp lang_key, png_const_charp text)
void png_write_oFFs (png_structrp png_ptr, png_int_32 x_offset, png_int_32 y_offset, int unit_type)
void png_write_pCAL (png_structrp png_ptr, png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, png_const_charp units, png_charpp params)
void png_write_sCAL_s (png_structrp png_ptr, int unit, png_const_charp width, png_const_charp height)
void png_write_pHYs (png_structrp png_ptr, png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit, int unit_type)
void png_write_tIME (png_structrp png_ptr, png_const_timep mod_time)
void png_write_start_row (png_structrp png_ptr)
void png_write_finish_row (png_structrp png_ptr)
void png_do_write_interlace (png_row_infop row_info, png_bytep row, int pass)
static void png_write_filtered_row (png_structrp png_ptr, png_bytep filtered_row, size_t row_bytes)
static size_t png_setup_sub_row (png_structrp png_ptr, png_uint_32 bpp, size_t row_bytes, size_t lmins)
static void png_setup_sub_row_only (png_structrp png_ptr, png_uint_32 bpp, size_t row_bytes)
static size_t png_setup_up_row (png_structrp png_ptr, size_t row_bytes, size_t lmins)
static void png_setup_up_row_only (png_structrp png_ptr, size_t row_bytes)
static size_t png_setup_avg_row (png_structrp png_ptr, png_uint_32 bpp, size_t row_bytes, size_t lmins)
static void png_setup_avg_row_only (png_structrp png_ptr, png_uint_32 bpp, size_t row_bytes)
static size_t png_setup_paeth_row (png_structrp png_ptr, png_uint_32 bpp, size_t row_bytes, size_t lmins)
static void png_setup_paeth_row_only (png_structrp png_ptr, png_uint_32 bpp, size_t row_bytes)
void png_write_find_filter (png_structrp png_ptr, png_row_infop row_info)

Function Documentation

◆ optimize_cmf()

void optimize_cmf ( png_bytep data,
png_alloc_size_t data_size )
static

◆ png_compress_IDAT()

void png_compress_IDAT ( png_structrp png_ptr,
png_const_bytep input,
png_alloc_size_t input_len,
int flush )

◆ png_deflate_claim()

int png_deflate_claim ( png_structrp png_ptr,
png_uint_32 owner,
png_alloc_size_t data_size )
static

◆ png_do_write_interlace()

void png_do_write_interlace ( png_row_infop row_info,
png_bytep row,
int pass )

◆ png_free_buffer_list()

void png_free_buffer_list ( png_structrp png_ptr,
png_compression_bufferp * listp )

◆ png_image_size()

png_alloc_size_t png_image_size ( png_structrp png_ptr)
static

◆ png_save_uint_16()

void PNGAPI png_save_uint_16 ( png_bytep buf,
unsigned int i )

◆ png_save_uint_32()

void PNGAPI png_save_uint_32 ( png_bytep buf,
png_uint_32 i )

◆ png_setup_avg_row()

size_t png_setup_avg_row ( png_structrp png_ptr,
png_uint_32 bpp,
size_t row_bytes,
size_t lmins )
static

◆ png_setup_avg_row_only()

void png_setup_avg_row_only ( png_structrp png_ptr,
png_uint_32 bpp,
size_t row_bytes )
static

◆ png_setup_paeth_row()

size_t png_setup_paeth_row ( png_structrp png_ptr,
png_uint_32 bpp,
size_t row_bytes,
size_t lmins )
static

◆ png_setup_paeth_row_only()

void png_setup_paeth_row_only ( png_structrp png_ptr,
png_uint_32 bpp,
size_t row_bytes )
static

◆ png_setup_sub_row()

size_t png_setup_sub_row ( png_structrp png_ptr,
png_uint_32 bpp,
size_t row_bytes,
size_t lmins )
static

◆ png_setup_sub_row_only()

void png_setup_sub_row_only ( png_structrp png_ptr,
png_uint_32 bpp,
size_t row_bytes )
static

◆ png_setup_up_row()

size_t png_setup_up_row ( png_structrp png_ptr,
size_t row_bytes,
size_t lmins )
static

◆ png_setup_up_row_only()

void png_setup_up_row_only ( png_structrp png_ptr,
size_t row_bytes )
static

◆ png_text_compress()

int png_text_compress ( png_structrp png_ptr,
png_uint_32 chunk_name,
compression_state * comp,
png_uint_32 prefix_len )
static

◆ png_text_compress_init()

void png_text_compress_init ( compression_state * comp,
png_const_bytep input,
png_alloc_size_t input_len )
static

◆ png_write_bKGD()

void png_write_bKGD ( png_structrp png_ptr,
png_const_color_16p back,
int color_type )

◆ png_write_cHRM_fixed()

void png_write_cHRM_fixed ( png_structrp png_ptr,
const png_xy * xy )

◆ png_write_chunk()

void PNGAPI png_write_chunk ( png_structrp png_ptr,
png_const_bytep chunk_string,
png_const_bytep data,
size_t length )

◆ png_write_chunk_data()

void PNGAPI png_write_chunk_data ( png_structrp png_ptr,
png_const_bytep data,
size_t length )

◆ png_write_chunk_end()

void PNGAPI png_write_chunk_end ( png_structrp png_ptr)

◆ png_write_chunk_header()

void png_write_chunk_header ( png_structrp png_ptr,
png_uint_32 chunk_name,
png_uint_32 length )
static

◆ png_write_chunk_start()

void PNGAPI png_write_chunk_start ( png_structrp png_ptr,
png_const_bytep chunk_string,
png_uint_32 length )

◆ png_write_complete_chunk()

void png_write_complete_chunk ( png_structrp png_ptr,
png_uint_32 chunk_name,
png_const_bytep data,
size_t length )
static

◆ png_write_compressed_data_out()

void png_write_compressed_data_out ( png_structrp png_ptr,
compression_state * comp )
static

◆ png_write_filtered_row()

void png_write_filtered_row ( png_structrp png_ptr,
png_bytep filtered_row,
size_t row_bytes )
static

◆ png_write_find_filter()

void png_write_find_filter ( png_structrp png_ptr,
png_row_infop row_info )

◆ png_write_finish_row()

void png_write_finish_row ( png_structrp png_ptr)

◆ png_write_gAMA_fixed()

void png_write_gAMA_fixed ( png_structrp png_ptr,
png_fixed_point file_gamma )

◆ png_write_hIST()

void png_write_hIST ( png_structrp png_ptr,
png_const_uint_16p hist,
int num_hist )

◆ png_write_iCCP()

void png_write_iCCP ( png_structrp png_ptr,
png_const_charp name,
png_const_bytep profile )

◆ png_write_IEND()

void png_write_IEND ( png_structrp png_ptr)

◆ png_write_IHDR()

void png_write_IHDR ( png_structrp png_ptr,
png_uint_32 width,
png_uint_32 height,
int bit_depth,
int color_type,
int compression_type,
int filter_type,
int interlace_type )

◆ png_write_iTXt()

void png_write_iTXt ( png_structrp png_ptr,
int compression,
png_const_charp key,
png_const_charp lang,
png_const_charp lang_key,
png_const_charp text )

◆ png_write_oFFs()

void png_write_oFFs ( png_structrp png_ptr,
png_int_32 x_offset,
png_int_32 y_offset,
int unit_type )

◆ png_write_pCAL()

void png_write_pCAL ( png_structrp png_ptr,
png_charp purpose,
png_int_32 X0,
png_int_32 X1,
int type,
int nparams,
png_const_charp units,
png_charpp params )

◆ png_write_pHYs()

void png_write_pHYs ( png_structrp png_ptr,
png_uint_32 x_pixels_per_unit,
png_uint_32 y_pixels_per_unit,
int unit_type )

◆ png_write_PLTE()

void png_write_PLTE ( png_structrp png_ptr,
png_const_colorp palette,
png_uint_32 num_pal )

◆ png_write_sBIT()

void png_write_sBIT ( png_structrp png_ptr,
png_const_color_8p sbit,
int color_type )

◆ png_write_sCAL_s()

void png_write_sCAL_s ( png_structrp png_ptr,
int unit,
png_const_charp width,
png_const_charp height )

◆ png_write_sig()

void PNGAPI png_write_sig ( png_structrp png_ptr)

◆ png_write_sPLT()

void png_write_sPLT ( png_structrp png_ptr,
png_const_sPLT_tp spalette )

◆ png_write_sRGB()

void png_write_sRGB ( png_structrp png_ptr,
int srgb_intent )

◆ png_write_start_row()

void png_write_start_row ( png_structrp png_ptr)

◆ png_write_tEXt()

void png_write_tEXt ( png_structrp png_ptr,
png_const_charp key,
png_const_charp text,
size_t text_len )

◆ png_write_tIME()

void png_write_tIME ( png_structrp png_ptr,
png_const_timep mod_time )

◆ png_write_tRNS()

void png_write_tRNS ( png_structrp png_ptr,
png_const_bytep trans_alpha,
png_const_color_16p tran,
int num_trans,
int color_type )

◆ png_write_zTXt()

void png_write_zTXt ( png_structrp png_ptr,
png_const_charp key,
png_const_charp text,
int compression )
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