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Adding build32RGBA to png.Tools #6

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Adding build32RGBA to png.Tools #6

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20690ce
Added build32RGBA to png.Tools
deltaluca Aug 22, 2013
36762d5
Fix comment on build32RGBA
deltaluca Aug 22, 2013
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24 changes: 24 additions & 0 deletions format/png/Tools.hx
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Original file line number Diff line number Diff line change
Expand Up @@ -610,6 +610,30 @@ class Tools {
return l;
}

/**
Creates PNG data from bytes that contains four bytes in RGBA format for each pixel.
**/
public static function build32RGBA( width : Int, height : Int, data : haxe.io.Bytes ) : Data {
var rgba = haxe.io.Bytes.alloc(width * height * 4 + height);
// add filter byte
var w = 0, r = 0;
for( y in 0...height ) {
rgba.set(w++,0); // no filter for this scanline
for( x in 0...width ) {
rgba.set(w++,data.get(r)); // r
rgba.set(w++,data.get(r+1)); // g
rgba.set(w++,data.get(r+2)); // b
rgba.set(w++,data.get(r+3)); // a
r += 4;
}
}
var l = new List();
l.add(CHeader({ width : width, height : height, colbits : 8, color : ColTrue(true), interlaced : false }));
l.add(CData(format.tools.Deflate.run(rgba)));
l.add(CEnd);
return l;
}

/**
Creates PNG data from bytes that contains four bytes in ARGB format for each pixel.
**/
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