png_context Struct Reference

PNG context. More...

Data Fields
size_t	offset
	Offset within image.
struct pixel_buffer *	pixbuf
	Pixel buffer.
unsigned int	depth
	Bit depth.
unsigned int	colour_type
	Colour type.
unsigned int	channels
	Number of channels.
unsigned int	passes
	Number of interlace passes.
uint32_t	palette [PNG_PALETTE_COUNT]
	Palette, in iPXE's pixel buffer format.
struct deflate_chunk	raw
	Decompression buffer for raw PNG data.
struct deflate	deflate
	Decompressor.

Detailed Description

PNG context.

Definition at line 45 of file png.c.

Field Documentation

offset

size_t png_context::offset

Offset within image.

Definition at line 47 of file png.c.

Referenced by png_chunk(), png_image_data(), png_image_header(), png_palette(), and png_pixbuf().

pixbuf

struct pixel_buffer* png_context::pixbuf

Pixel buffer.

Definition at line 50 of file png.c.

Referenced by png_image_end(), png_image_header(), png_interlace(), png_pixbuf(), and png_pixels_pass().

depth

unsigned int png_context::depth

Bit depth.

Definition at line 53 of file png.c.

Referenced by png_image_header(), png_pixel_len(), png_pixels_pass(), and png_scanline_len().

colour_type

unsigned int png_context::colour_type

Colour type.

Definition at line 55 of file png.c.

Referenced by png_image_header(), and png_pixels_pass().

channels

unsigned int png_context::channels

Number of channels.

Definition at line 57 of file png.c.

Referenced by png_image_header(), png_pixel_len(), png_pixels_pass(), and png_scanline_len().

passes

unsigned int png_context::passes

Number of interlace passes.

Definition at line 59 of file png.c.

Referenced by png_image_header(), png_interlace(), png_pixels(), and png_unfilter().

palette

uint32_t png_context::palette[PNG_PALETTE_COUNT]

Palette, in iPXE's pixel buffer format.

Definition at line 61 of file png.c.

Referenced by png_palette(), and png_pixels_pass().

raw

struct deflate_chunk png_context::raw

Decompression buffer for raw PNG data.

Definition at line 64 of file png.c.

Referenced by png_image_data(), png_image_end(), png_image_header(), png_pixbuf(), png_pixels(), png_pixels_pass(), png_unfilter(), and png_unfilter_pass().

deflate

struct deflate png_context::deflate

Decompressor.

Definition at line 66 of file png.c.

Referenced by png_image_data(), png_image_end(), and png_pixbuf().

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The documentation for this struct was generated from the following file:

• image/png.c