Linux Standard Base Desktop Specification 4.1
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IV. PNG12 library
Table of Contents
8.
Libraries
8.1.
Interfaces for libpng12
8.1.1.
PNG Reference library
8.2.
Data Definitions for libpng12
8.2.1.
png.h
8.3.
Interface Definitions for libpng12
png_access_version_number
-- return version of the run-time library
png_check_sig
-- INSERT PURPOSE HERE
png_convert_from_struct_tm
-- convert struct tm to png_time
png_convert_from_time_t
-- convert time_t to png_time
png_create_info_struct
-- allocate and initialize a png_info structure
png_create_read_struct
-- allocate and initialize a png_struct structure for reading PNG file
png_create_read_struct_2
-- register custom read function
png_create_write_struct
-- allocate and initialize a png_struct structure for writing PNG file
png_create_write_struct_2
-- register custom write function
png_data_freer
-- change the default behavior for freeing data
png_destroy_info_struct
-- free memory in PNG info structure
png_destroy_read_struct
-- free the memory associated with read png_struct
png_destroy_write_struct
-- free the memory associated with write png_struct
png_error
-- default function to handle fatal errors
png_free
-- free a pointer allocated by png_malloc()
png_free_data
-- free internally allocated data
png_get_IHDR
-- get PNG_IHDR chunk information from png_info structure
png_get_PLTE
-- get image palette information from png_info structure
png_get_bKGD
-- get background color for given image
png_get_bit_depth
-- return image bit_depth
png_get_cHRM
-- get CIE chromacities and referenced white point for given image
png_get_channels
-- get number of color channels in image
png_get_color_type
-- return image color type
png_get_error_ptr
-- return error_ptr for user-defined functions
png_get_gAMA
-- get the gamma value for given image
png_get_hIST
-- get the histogram for given image
png_get_header_ver
-- get version information for libpng header files
png_get_iCCP
-- get the embedded ICC profile data for given image
png_get_image_height
-- return image height
png_get_image_width
-- return image width
png_get_interlace_type
-- returns interlace method
png_get_io_ptr
-- return pointer for user-defined I/O
png_get_libpng_ver
-- get the library version string
png_get_oFFs
-- get screen offsets for the given image
png_get_pHYs
-- get the physical resolution for given image
png_get_progressive_ptr
-- return pointer to user-defined push read functions
png_get_rowbytes
-- Return number of bytes for a row
png_get_rows
-- retrieve image data from png_info structure
png_get_sBIT
-- get number of significant bits for each color channel
png_get_sRGB
-- get the rendering intent for given image
png_get_tIME
-- get last modification time for the image
png_get_tRNS
-- get transparency data for images
png_get_text
-- get comments information from png_info structure
png_get_unknown_chunks
-- retrieve the unknown chunks from a PNG file
png_get_user_chunk_ptr
-- get pointer to user chunk data
png_get_valid
-- determine if given chunk data is valid
png_get_x_offset_pixels
-- return x offset in pixels from oFFs chunk
png_get_x_pixels_per_meter
-- return horizontal pixel density per meter
png_get_y_offset_pixels
-- return y offset in pixels from oFFs chunk
png_get_y_pixels_per_meter
-- return vertical pixel density per meter
png_info_init_3
-- initialize an info structure (DEPRECATED)
png_init_io
-- initialize input/output for the PNG file
png_libpng_ver
-- external variable holding version number of libpng
png_malloc
-- allocate memory
png_permit_mng_features
-- enable MNG extensions for PNG image wrapped in MNG datastream
png_process_data
-- read PNG file progressively
png_progressive_combine_row
-- combines current row data with processed row
png_read_end
-- read the end of PNG file
png_read_image
-- read the entire image into memory
png_read_info
-- read the PNG image information
png_read_png
-- read the entire PNG file
png_read_row
-- read a row of image data
png_read_rows
-- read multiple rows of image data
png_read_update_info
-- update png_info structure
png_set_IHDR
-- set the PNG_IHDR chunk information
png_set_PLTE
-- set color values for the palette
png_set_bKGD
-- set the background color for given image
png_set_background
-- set the background for given image
png_set_bgr
-- set pixel order to blue, green, red
png_set_cHRM
-- set CIE chromacities and referenced white point for given image
png_set_compression_buffer_size
-- set the size of the compression buffer
png_set_compression_level
-- set image compression level
png_set_compression_mem_level
-- set how much memory to use for the internal state during PNG compression
png_set_compression_method
-- set PNG compression algorithm
png_set_compression_strategy
-- set PNG compression strategy
png_set_compression_window_bits
-- set PNG compression window size
png_set_dither
-- turn on dithering to 8-bit
png_set_error_fn
-- set user defined functions for error handling
png_set_expand
-- set expansion transformation
png_set_filler
-- add a filler byte to given image
png_set_filter
-- set filtering method
png_set_gAMA
-- set the gamma value for given image
png_set_gamma
-- transform the image from file gamma to screen gamma
png_set_gray_1_2_4_to_8
-- set expansion transformation
png_set_gray_to_rgb
-- expand the grayscale image to 24-bit RGB
png_set_hIST
-- set the histogram of color palette
png_set_iCCP
-- set ICC component
png_set_interlace_handling
-- get the number of passes for image interlacing
png_set_invert_alpha
-- invert the level of opacity of a PNG file
png_set_invert_mono
-- reverse values for monochromicity
png_set_keep_unknown_chunks
-- specify list of chunks and how to handle them
png_set_mem_fn
-- install custom memory allocation functions
png_set_oFFs
-- set screen offsets for given image
png_set_pHYs
-- set physical resolution
png_set_packing
-- expand image to 1 pixel per byte for bit-depths 1,2 and 4
png_set_packswap
-- swap the order of pixels for packed-pixel image
png_set_palette_to_rgb
-- set expansion transformation
png_set_progressive_read_fn
-- set progressive read callback functions
png_set_read_fn
-- set user-defined function for reading a PNG stream
png_set_read_user_chunk_fn
-- install custom callback function to handle unknown chunks in the input stream
png_set_read_user_transform_fn
-- install a custom input transformation callback function
png_set_rgb_to_gray
-- reduce 24-bit RGB to grayscale image
png_set_rows
-- put image data in png_info structure
png_set_sBIT
-- set number of significant bits for each channel
png_set_sRGB
-- set the rendering intent for given image
png_set_sRGB_gAMA_and_cHRM
-- set rendering intent, gamma values, and CIE chromaticities of a PNG file
png_set_shift
-- shift pixel values to valid bit-depth
png_set_sig_bytes
-- number of bytes read from PNG file
png_set_strip_16
-- strip 16 bit PNG file to 8 bit depth
png_set_strip_alpha
-- remove alpha channel on the given image
png_set_swap
-- swap byte-order for 16 bit depth files
png_set_swap_alpha
-- swap image data from RGBA to ARGB format
png_set_tIME
-- set last modification time for the image
png_set_tRNS
-- set transparency values for images
png_set_tRNS_to_alpha
-- set expansion transformation
png_set_text
-- stores information for image comments
png_set_unknown_chunk_location
-- set the location of an unknown chunk in a PNG file
png_set_unknown_chunks
-- insert unknown chunks into a PNG file
png_set_write_fn
-- set user-defined function for writing a PNG stream
png_set_write_status_fn
-- install custom callback function to be called after row is written
png_set_write_user_transform_fn
-- install a custom output transformation callback function
png_sig_cmp
-- match the PNG signature
png_start_read_image
-- start reading a PNG file
png_warning
-- default function to handle non-fatal errors
png_write_chunk
-- write a PNG chunk
png_write_end
-- write the end of a PNG file
png_write_flush
-- flush the current output buffers
png_write_image
-- write the given image data
png_write_info
-- write PNG information to file
png_write_png
-- write the entire PNG file
png_write_row
-- write a row of image data
png_write_rows
-- write multiple rows of image data
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