//=======================================================================
//			Copyright XashXT Group 2007 ©
//			image.h - tga, pcx image headers
//=======================================================================

#ifndef IMAGE_H
#define IMAGE_H

static byte palette_d1[768] = 
{
0,0,0,31,23,11,23,15,7,75,75,75,255,255,255,27,27,27,19,19,19,11,11,11,7,7,7,47,55,31,35,43,15,23,31,7,15,23,0,79,
59,43,71,51,35,63,43,27,255,183,183,247,171,171,243,163,163,235,151,151,231,143,143,223,135,135,219,123,123,211,115,
115,203,107,107,199,99,99,191,91,91,187,87,87,179,79,79,175,71,71,167,63,63,163,59,59,155,51,51,151,47,47,143,43,43,
139,35,35,131,31,31,127,27,27,119,23,23,115,19,19,107,15,15,103,11,11,95,7,7,91,7,7,83,7,7,79,0,0,71,0,0,67,0,0,255,
235,223,255,227,211,255,219,199,255,211,187,255,207,179,255,199,167,255,191,155,255,187,147,255,179,131,247,171,123,
239,163,115,231,155,107,223,147,99,215,139,91,207,131,83,203,127,79,191,123,75,179,115,71,171,111,67,163,107,63,155,
99,59,143,95,55,135,87,51,127,83,47,119,79,43,107,71,39,95,67,35,83,63,31,75,55,27,63,47,23,51,43,19,43,35,15,239,
239,239,231,231,231,223,223,223,219,219,219,211,211,211,203,203,203,199,199,199,191,191,191,183,183,183,179,179,179,
171,171,171,167,167,167,159,159,159,151,151,151,147,147,147,139,139,139,131,131,131,127,127,127,119,119,119,111,111,
111,107,107,107,99,99,99,91,91,91,87,87,87,79,79,79,71,71,71,67,67,67,59,59,59,55,55,55,47,47,47,39,39,39,35,35,35,
119,255,111,111,239,103,103,223,95,95,207,87,91,191,79,83,175,71,75,159,63,67,147,55,63,131,47,55,115,43,47,99,35,39,
83,27,31,67,23,23,51,15,19,35,11,11,23,7,191,167,143,183,159,135,175,151,127,167,143,119,159,135,111,155,127,107,147,
123,99,139,115,91,131,107,87,123,99,79,119,95,75,111,87,67,103,83,63,95,75,55,87,67,51,83,63,47,159,131,99,143,119,83,
131,107,75,119,95,63,103,83,51,91,71,43,79,59,35,67,51,27,123,127,99,111,115,87,103,107,79,91,99,71,83,87,59,71,79,51,
63,71,43,55,63,39,255,255,115,235,219,87,215,187,67,195,155,47,175,123,31,155,91,19,135,67,7,115,43,0,255,255,255,255,
219,219,255,187,187,255,155,155,255,123,123,255,95,95,255,63,63,255,31,31,255,0,0,239,0,0,227,0,0,215,0,0,203,0,0,191,
0,0,179,0,0,167,0,0,155,0,0,139,0,0,127,0,0,115,0,0,103,0,0,91,0,0,79,0,0,67,0,0,231,231,255,199,199,255,171,171,255,
143,143,255,115,115,255,83,83,255,55,55,255,27,27,255,0,0,255,0,0,227,0,0,203,0,0,179,0,0,155,0,0,131,0,0,107,0,0,83,
255,255,255,255,235,219,255,215,187,255,199,155,255,179,123,255,163,91,255,143,59,255,127,27,243,115,23,235,111,15,
223,103,15,215,95,11,203,87,7,195,79,0,183,71,0,175,67,0,255,255,255,255,255,215,255,255,179,255,255,143,255,255,107,
255,255,71,255,255,35,255,255,0,167,63,0,159,55,0,147,47,0,135,35,0,79,59,39,67,47,27,55,35,19,47,27,11,0,0,83,0,0,71,
0,0,59,0,0,47,0,0,35,0,0,23,0,0,11,0,255,255,255,159,67,255,231,75,255,123,255,255,0,255,207,0,207,159,0,155,111,0,107,
167,107,107
};

static byte palette_q1[768] =
{
0,0,0,15,15,15,31,31,31,47,47,47,63,63,63,75,75,75,91,91,91,107,107,107,123,123,123,139,139,139,155,155,155,171,
171,171,187,187,187,203,203,203,219,219,219,235,235,235,15,11,7,23,15,11,31,23,11,39,27,15,47,35,19,55,43,23,63,
47,23,75,55,27,83,59,27,91,67,31,99,75,31,107,83,31,115,87,31,123,95,35,131,103,35,143,111,35,11,11,15,19,19,27,
27,27,39,39,39,51,47,47,63,55,55,75,63,63,87,71,71,103,79,79,115,91,91,127,99,99,139,107,107,151,115,115,163,123,
123,175,131,131,187,139,139,203,0,0,0,7,7,0,11,11,0,19,19,0,27,27,0,35,35,0,43,43,7,47,47,7,55,55,7,63,63,7,71,71,
7,75,75,11,83,83,11,91,91,11,99,99,11,107,107,15,7,0,0,15,0,0,23,0,0,31,0,0,39,0,0,47,0,0,55,0,0,63,0,0,71,0,0,79,
0,0,87,0,0,95,0,0,103,0,0,111,0,0,119,0,0,127,0,0,19,19,0,27,27,0,35,35,0,47,43,0,55,47,0,67,55,0,75,59,7,87,67,7,
95,71,7,107,75,11,119,83,15,131,87,19,139,91,19,151,95,27,163,99,31,175,103,35,35,19,7,47,23,11,59,31,15,75,35,19,
87,43,23,99,47,31,115,55,35,127,59,43,143,67,51,159,79,51,175,99,47,191,119,47,207,143,43,223,171,39,239,203,31,255,
243,27,11,7,0,27,19,0,43,35,15,55,43,19,71,51,27,83,55,35,99,63,43,111,71,51,127,83,63,139,95,71,155,107,83,167,123,
95,183,135,107,195,147,123,211,163,139,227,179,151,171,139,163,159,127,151,147,115,135,139,103,123,127,91,111,119,
83,99,107,75,87,95,63,75,87,55,67,75,47,55,67,39,47,55,31,35,43,23,27,35,19,19,23,11,11,15,7,7,187,115,159,175,107,
143,163,95,131,151,87,119,139,79,107,127,75,95,115,67,83,107,59,75,95,51,63,83,43,55,71,35,43,59,31,35,47,23,27,35,
19,19,23,11,11,15,7,7,219,195,187,203,179,167,191,163,155,175,151,139,163,135,123,151,123,111,135,111,95,123,99,83,
107,87,71,95,75,59,83,63,51,67,51,39,55,43,31,39,31,23,27,19,15,15,11,7,111,131,123,103,123,111,95,115,103,87,107,
95,79,99,87,71,91,79,63,83,71,55,75,63,47,67,55,43,59,47,35,51,39,31,43,31,23,35,23,15,27,19,11,19,11,7,11,7,255,
243,27,239,223,23,219,203,19,203,183,15,187,167,15,171,151,11,155,131,7,139,115,7,123,99,7,107,83,0,91,71,0,75,55,
0,59,43,0,43,31,0,27,15,0,11,7,0,0,0,255,11,11,239,19,19,223,27,27,207,35,35,191,43,43,175,47,47,159,47,47,143,47,
47,127,47,47,111,47,47,95,43,43,79,35,35,63,27,27,47,19,19,31,11,11,15,43,0,0,59,0,0,75,7,0,95,7,0,111,15,0,127,23,
7,147,31,7,163,39,11,183,51,15,195,75,27,207,99,43,219,127,59,227,151,79,231,171,95,239,191,119,247,211,139,167,123,
59,183,155,55,199,195,55,231,227,87,127,191,255,171,231,255,215,255,255,103,0,0,139,0,0,179,0,0,215,0,0,255,0,0,255,
243,147,255,247,199,255,255,255,159,91,83
};

static byte palette_q2[768] =
{
0,0,0,15,15,15,31,31,31,47,47,47,63,63,63,75,75,75,91,91,91,107,107,107,123,123,123,139,139,139,155,155,155,171,171,
171,187,187,187,203,203,203,219,219,219,235,235,235,99,75,35,91,67,31,83,63,31,79,59,27,71,55,27,63,47,23,59,43,23,
51,39,19,47,35,19,43,31,19,39,27,15,35,23,15,27,19,11,23,15,11,19,15,7,15,11,7,95,95,111,91,91,103,91,83,95,87,79,91,
83,75,83,79,71,75,71,63,67,63,59,59,59,55,55,51,47,47,47,43,43,39,39,39,35,35,35,27,27,27,23,23,23,19,19,19,143,119,
83,123,99,67,115,91,59,103,79,47,207,151,75,167,123,59,139,103,47,111,83,39,235,159,39,203,139,35,175,119,31,147,99,
27,119,79,23,91,59,15,63,39,11,35,23,7,167,59,43,159,47,35,151,43,27,139,39,19,127,31,15,115,23,11,103,23,7,87,19,0,
75,15,0,67,15,0,59,15,0,51,11,0,43,11,0,35,11,0,27,7,0,19,7,0,123,95,75,115,87,67,107,83,63,103,79,59,95,71,55,87,67,
51,83,63,47,75,55,43,67,51,39,63,47,35,55,39,27,47,35,23,39,27,19,31,23,15,23,15,11,15,11,7,111,59,23,95,55,23,83,47,
23,67,43,23,55,35,19,39,27,15,27,19,11,15,11,7,179,91,79,191,123,111,203,155,147,215,187,183,203,215,223,179,199,211,
159,183,195,135,167,183,115,151,167,91,135,155,71,119,139,47,103,127,23,83,111,19,75,103,15,67,91,11,63,83,7,55,75,7,
47,63,7,39,51,0,31,43,0,23,31,0,15,19,0,7,11,0,0,0,139,87,87,131,79,79,123,71,71,115,67,67,107,59,59,99,51,51,91,47,
47,87,43,43,75,35,35,63,31,31,51,27,27,43,19,19,31,15,15,19,11,11,11,7,7,0,0,0,151,159,123,143,151,115,135,139,107,
127,131,99,119,123,95,115,115,87,107,107,79,99,99,71,91,91,67,79,79,59,67,67,51,55,55,43,47,47,35,35,35,27,23,23,19,
15,15,11,159,75,63,147,67,55,139,59,47,127,55,39,119,47,35,107,43,27,99,35,23,87,31,19,79,27,15,67,23,11,55,19,11,43,
15,7,31,11,7,23,7,0,11,0,0,0,0,0,119,123,207,111,115,195,103,107,183,99,99,167,91,91,155,83,87,143,75,79,127,71,71,
115,63,63,103,55,55,87,47,47,75,39,39,63,35,31,47,27,23,35,19,15,23,11,7,7,155,171,123,143,159,111,135,151,99,123,
139,87,115,131,75,103,119,67,95,111,59,87,103,51,75,91,39,63,79,27,55,67,19,47,59,11,35,47,7,27,35,0,19,23,0,11,15,
0,0,255,0,35,231,15,63,211,27,83,187,39,95,167,47,95,143,51,95,123,51,255,255,255,255,255,211,255,255,167,255,255,
127,255,255,83,255,255,39,255,235,31,255,215,23,255,191,15,255,171,7,255,147,0,239,127,0,227,107,0,211,87,0,199,71,
0,183,59,0,171,43,0,155,31,0,143,23,0,127,15,0,115,7,0,95,0,0,71,0,0,47,0,0,27,0,0,239,0,0,55,55,255,255,0,0,0,0,255,
43,43,35,27,27,23,19,19,15,235,151,127,195,115,83,159,87,51,123,63,27,235,211,199,199,171,155,167,139,119,135,107,87,
159,91,83	
};

/*
========================================================================

.PCX image format	(ZSoft Paintbrush)

========================================================================
*/
typedef struct
{
	char	manufacturer;
	char	version;
	char	encoding;
	char	bits_per_pixel;
	word	xmin,ymin,xmax,ymax;
	word	hres,vres;
	byte	palette[48];
	char	reserved;
	char	color_planes;
	word	bytes_per_line;
	word	palette_type;
	char	filler[58];
} pcx_t;

/*
========================================================================

.WAL image format	(Wally textures)

========================================================================
*/
typedef struct wal_s
{
	char	name[32];
	uint	width, height;
	uint	offsets[4];	// four mip maps stored
	char	animname[32];	// next frame in animation chain
	int	flags;
	int	contents;
	int	value;
} wal_t;

/*
========================================================================

.LMP image format	(Quake1 lumps)

========================================================================
*/
typedef struct lmp_s
{
	uint	width;
	uint	height;
} lmp_t;

/*
========================================================================

.MIP image format	(Quake1 textures)

========================================================================
*/
typedef struct mip_s
{
	char	name[16];
	uint	width, height;
	uint	offsets[4];	// four mip maps stored
} mip_t;

/*
========================================================================

.FLAT image format	(Doom I\II textures)

========================================================================
*/
typedef struct flat_s
{
	short	width;
	short	height;
	long	desc;		// image desc (not used)
} flat_t;

/*
========================================================================

.TGA image format	(Truevision Targa)

========================================================================
*/
typedef struct tga_s
{
	byte	id_length;
	byte	colormap_type;
	byte	image_type;
	word	colormap_index;
	word	colormap_length;
	byte	colormap_size;
	word	x_origin;
	word	y_origin;
	word	width;
	word	height;
	byte	pixel_size;
	byte	attributes;
} tga_t;
/*
========================================================================

.DDS image format

========================================================================
*/
#define DDSHEADER	((' '<<24)+('S'<<16)+('D'<<8)+'D') // little-endian "DDS "

//other four-cc types
#define TYPE_DXT1	(('1'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT1"
#define TYPE_DXT2	(('2'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT2"
#define TYPE_DXT3	(('3'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT3"
#define TYPE_DXT4	(('4'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT4"
#define TYPE_DXT5	(('5'<<24)+('T'<<16)+('X'<<8)+'D') // little-endian "DXT5"

#define TYPE_ATI1	(('1'<<24)+('I'<<16)+('T'<<8)+'A') // little-endian "ATI1"
#define TYPE_ATI2	(('2'<<24)+('I'<<16)+('T'<<8)+'A') // little-endian "ATI2"


#define TYPE_RXGB	(('B'<<24)+('G'<<16)+('X'<<8)+'R') // little-endian "RXGB" doom3 normalmaps
#define TYPE_$	(('\0'<<24)+('\0'<<16)+('\0'<<8)+'$') // little-endian "$"

#define DDS_CAPS				0x00000001L
#define DDS_HEIGHT				0x00000002L
#define DDS_WIDTH				0x00000004L

#define DDS_RGB				0x00000040L
#define DDS_PIXELFORMAT			0x00001000L
#define DDS_LUMINANCE			0x00020000L

#define DDS_ALPHAPIXELS			0x00000001L
#define DDS_ALPHA				0x00000002L
#define DDS_FOURCC				0x00000004L
#define DDS_PITCH				0x00000008L
#define DDS_COMPLEX				0x00000008L
#define DDS_CUBEMAP				0x00000200L
#define DDS_CUBEMAP_POSITIVEX			0x00000400L
#define DDS_CUBEMAP_NEGATIVEX			0x00000800L
#define DDS_CUBEMAP_POSITIVEY			0x00001000L
#define DDS_CUBEMAP_NEGATIVEY			0x00002000L
#define DDS_CUBEMAP_POSITIVEZ			0x00004000L
#define DDS_CUBEMAP_NEGATIVEZ			0x00008000L
#define DDS_MIPMAPCOUNT			0x00020000L
#define DDS_LINEARSIZE			0x00080000L
#define DDS_VOLUME				0x00200000L
#define DDS_MIPMAP				0x00400000L
#define DDS_DEPTH				0x00800000L

typedef struct dds_pf_s
{
	uint	dwSize;
	uint	dwFlags;
	uint	dwFourCC;
	uint	dwRGBBitCount;
	uint	dwRBitMask;
	uint	dwGBitMask;
	uint	dwBBitMask;
	uint	dwABitMask;
} dds_pixf_t;

//  DDCAPS2
typedef struct dds_caps_s
{
	uint	dwCaps1;
	uint	dwCaps2;
	uint	dwCaps3;
	uint	dwCaps4;
} dds_caps_t;

typedef struct
{
	uint		dwIdent;		// must matched with DDSHEADER
	uint		dwSize;
	uint		dwFlags;		// determines what fields are valid
	uint		dwHeight;
	uint		dwWidth;
	uint		dwLinearSize;	// Formless late-allocated optimized surface size
	uint		dwDepth;		// depth if a volume texture
	uint		dwMipMapCount;	// number of mip-map levels requested
	uint		dwAlphaBitDepth;	// depth of alpha buffer requested
	uint		dwReserved1[10];	// reserved for future expansions
	dds_pixf_t	dsPixelFormat;
	dds_caps_t	dsCaps;
	uint		dwTextureStage;
} dds_t;

/*
========================================================================

.JPG image format

========================================================================
*/
typedef struct huffman_table_s
{
	// Huffman coding tables
	byte	bits[16];
	byte	hval[256];
	byte	size[256];
	word	code[256];

} huffman_table_t;

typedef struct jpg_s
{
	// Jpeg file parameter
	file_t	*file;		// file
	byte	*buffer;		// jpg buffer
	
	int	width;		// width image
	int	height;		// height image
	byte	*data;		// image
	int	data_precision;	// bit per component
	int	num_components;	// number component
	int	restart_interval;	// restart interval
	bool	progressive_mode;	// progressive format

	struct
	{
		int     id;	// identifier
		int     h;	// horizontal sampling factor
		int     v;	// vertical sampling factor
		int     t;	// Quantization table selector
		int     td;	// DC table selector
		int     ta;	// AC table selector
	} component_info[3];
    
	huffman_table_t hac[4];	// AC table
	huffman_table_t hdc[4];	// DC table

	int	qtable[4][64];	// Quantization table

	struct
	{
		int     ss,se;	// progressive jpeg spectral selection
		int     ah,al;	// progressive jpeg successive approx
	} scan;

	int	dc[3];
	int	curbit;
	byte	curbyte;

} jpg_t;

static jpg_t jpg_file;

// image lib utilites
extern uint *d_currentpal;
void Image_GetQ1Palette( void );
void Image_GetQ2Palette( void );
void Image_GetPalettePCX( byte *pal );
void Image_Copy8bitRGBA(const byte *in, byte *out, int pixels);
void Image_RoundDimensions(int *scaled_width, int *scaled_height);
byte *Image_Resample(uint *in, int inwidth, int inheight, int outwidth, int outheight, int in_type);

#endif//IMAGE_H