added code

src/tgaimage.h

@@ -0,0 +1,96 @@
+#ifndef __IMAGE_H__
+#define __IMAGE_H__
+
+#include <fstream>
+
+#pragma pack(push,1)
+struct TGA_Header {
+	char idlength;
+	char colormaptype;
+	char datatypecode;
+	short colormaporigin;
+	short colormaplength;
+	char colormapdepth;
+	short x_origin;
+	short y_origin;
+	short width;
+	short height;
+	char  bitsperpixel;
+	char  imagedescriptor;
+};
+#pragma pack(pop)
+
+
+
+struct TGAColor {
+	union {
+		struct {
+			unsigned char b, g, r, a;
+		};
+		unsigned char raw[4];
+		unsigned int val;
+	};
+	int bytespp;
+
+	TGAColor() : val(0), bytespp(1) {
+	}
+
+	TGAColor(unsigned char R, unsigned char G, unsigned char B, unsigned char A) : b(B), g(G), r(R), a(A), bytespp(4) {
+	}
+
+	TGAColor(int v, int bpp) : val(v), bytespp(bpp) {
+	}
+
+	TGAColor(const TGAColor &c) : val(c.val), bytespp(c.bytespp) {
+	}
+
+	TGAColor(const unsigned char *p, int bpp) : val(0), bytespp(bpp) {
+		for (int i=0; i<bpp; i++) {
+			raw[i] = p[i];
+		}
+	}
+
+	TGAColor & operator =(const TGAColor &c) {
+		if (this != &c) {
+			bytespp = c.bytespp;
+			val = c.val;
+		}
+		return *this;
+	}
+};
+
+
+class TGAImage {
+protected:
+	unsigned char* data;
+	int width;
+	int height;
+	int bytespp;
+
+	bool   load_rle_data(std::ifstream &in);
+	bool unload_rle_data(std::ofstream &out);
+public:
+	enum Format {
+		GRAYSCALE=1, RGB=3, RGBA=4
+	};
+
+	TGAImage();
+	TGAImage(int w, int h, int bpp);
+	TGAImage(const TGAImage &img);
+	bool read_tga_file(const char *filename);
+	bool write_tga_file(const char *filename, bool rle=true);
+	bool flip_horizontally();
+	bool flip_vertically();
+	bool scale(int w, int h);
+	TGAColor get(int x, int y);
+	bool set(int x, int y, TGAColor c);
+	~TGAImage();
+	TGAImage & operator =(const TGAImage &img);
+	int get_width();
+	int get_height();
+	int get_bytespp();
+	unsigned char *buffer();
+	void clear();
+};
+
+#endif //__IMAGE_H__