PNGReader

Reads an image using libpng. Image properties are specified at runtime. Lower-level interface.

struct PNGReader {

Channels channels;

enum AlphaLocation;

AlphaLocation alphaLocation;

ubyte[] defaultColor;

void delegate(int width, int height) infoHandler;

ubyte[] delegate(uint rowNum) rowGetter;

void delegate(uint rowNum, int pass) rowHandler;

void delegate() endHandler;

size_t rowbytes;

void put(ubyte[] data);

}

Destructor

~this ~this(): Undocumented in source.

Postblit

this(this) this(this): Undocumented in source.

Members

Enums

Alpha enum Alpha: Alpha channel presence.
AlphaLocation enum AlphaLocation: Alpha channel location.
Channels enum Channels: Color channels and order.
Depth enum Depth: Color depth.

Functions

init void init(): Initialize and begin decoding.
put void put(ubyte[] data): Feed image bytes into libpng.

Variables

alpha Alpha alpha;: Alpha channel presence.
alphaLocation AlphaLocation alphaLocation;: Alpha channel location.
channels Channels channels;: Color channels and order.
defaultColor ubyte[] defaultColor;: Background color when flattening alpha.
depth Depth depth;: Color depth.
endHandler void delegate() endHandler;: Callback for decoding end.
infoHandler void delegate(int width, int height) infoHandler;: Callback for receiving image information.
passes uint passes;: The number of passes needed to decode the image.
rowGetter ubyte[] delegate(uint rowNum) rowGetter;: Callback for querying where to save an image row.
rowHandler void delegate(uint rowNum, int pass) rowHandler;: Callback for image information.
rowbytes size_t rowbytes;: Bytes in a row. rowGetter should return a slice of this length.
strict bool strict;: Throw on corrupt / invalid data, as opposed to ignoring errors as much as possible.

Meta

Source

See Implementation

ae utils graphics libpng functions

decodePNG

structs

PNGReader