PNGFileFormat

PNG file format representation

Does not actually support color correction/alteration for the chunks: cHRM, sRGB, iCCP and gAMA. Use them once you have already performed the alterations upon IDAT and respective data.

FIXME: Reliance on e.g. GC/processAllocator for when compressing/decompressing via zlib. Exporters use of filters 2, 3 and 4. Creates artifacts.

struct PNGFileFormat (

Color

) if (

isColor!Color ||

is(Color == HeadersOnly)

) {

import std.bitmanip : bigEndianToNative, nativeToBigEndian;;

import containers.hashmap;;

import containers.dynamicarray;;

HashMap!(PngTextKeywords, string, IAllocator)* tEXt;

HashMap!(PngTextKeywords, string, IAllocator)* zEXt;

bKGD_Chunk* bKGD;

pPHs_Chunk* pPHs;

sBIT_Chunk* sBIT;

DynamicArray!(sPLT_Chunk, IAllocator)* sPLT;

DynamicArray!(ushort, IAllocator)* hIST;

DateTime* tIME;

this(this);

static if(!is(Color == HeadersOnly))

ImageStorage!Color value;

static if(!is(Color == HeadersOnly))

managed!(ubyte[]) toBytes();

string toString();

IAllocator allocator [@property getter];

this(IAllocator allocator);

~this();

}

Constructors

this this(IAllocator allocator): Undocumented in source.

Destructor

~this ~this(): Undocumented in source.

Postblit

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

Alias This

value

Members

Functions

toBytes managed!(ubyte[]) toBytes()
toString string toString(): Undocumented in source. Be warned that the author may not have intended to support it.

Properties

allocator IAllocator allocator [@property getter]

Variables

IHDR IHDR_Chunk IHDR;
PLTE PLTE_Chunk* PLTE;
bKGD bKGD_Chunk* bKGD;
cHRM cHRM_Chunk* cHRM;
gAMA gAMA_Chunk* gAMA;
hIST DynamicArray!(ushort, IAllocator)* hIST;
iCCP iCCP_Chunk* iCCP;
pPHs pPHs_Chunk* pPHs;
sBIT sBIT_Chunk* sBIT;
sPLT DynamicArray!(sPLT_Chunk, IAllocator)* sPLT;
sRGB sRGB_Chunk* sRGB;
tEXt HashMap!(PngTextKeywords, string, IAllocator)* tEXt;: tEXt values are really latin-1 but treated as UTF-8 in D code, may originate from iEXt
tIME DateTime* tIME;
tRNS tRNS_Chunk* tRNS;
value ImageStorage!Color value;: Only available when Color is specified as not HeadersOnly
zEXt HashMap!(PngTextKeywords, string, IAllocator)* zEXt;: zEXt values are really latin-1 but treated as UTF-8 in D code, may originate from iEXt