Adjusted workflow.

include/ehs/io/img/PNG.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include "ehs/EHS.h"
+#include "ehs/Serializer.h"
+#include "PNG_Chunk.h"
+#include "Img.h"
+
+namespace ehs
+{
+	class PNG
+	{
+	private:
+		Str_8 id;
+		UInt_64 hashId;
+		Array<PNG_Chunk> chunks;
+
+	public:
+		PNG();
+
+		PNG(const Str_8& filePath);
+
+		PNG(const Str_8& id, Serializer<UInt_64>& data);
+
+		PNG(const PNG& png);
+
+		PNG& operator=(const PNG& png);
+
+		bool HasChunk(const UInt_64 hashId) const;
+
+		bool HasChunk(const Str_8& id) const;
+
+		PNG_Chunk* GetChunk(const UInt_64 hashId);
+
+		PNG_Chunk* GetChunk(const Str_8& id);
+
+		static bool IsPNG(Serializer<UInt_32>& data);
+
+		static void FilterNone(const Byte* const in, Byte* const out, const UInt_8 bitDepth, const UInt_8 channels, const UInt_32 scanline);
+
+		static void FilterSub(const Byte* const in, Byte* const out, const UInt_8 bitDepth, const UInt_8 channels, const UInt_32 scanline);
+
+		static void FilterUp(const Byte* const in, Byte* const out, const UInt_8 bitDepth, const UInt_8 channels, const UInt_32 scanline);
+
+		static void FilterAverage(const Byte* const in, Byte* const out, const UInt_8 bitDepth, const UInt_8 channels, const UInt_32 scanline);
+
+		static void FilterPaeth(const Byte* const in, Byte* const out, const UInt_8 bitDepth, const UInt_8 channels, const UInt_32 scanline);
+
+	private:
+		static Byte PaethPredictor(const Byte a, const Byte b, const Byte c);
+	};
+}