#ifndef __D3_DDS_H
#define __D3_DDS_H

//
// Structures from Direct3D 9
//
struct D3D_PixelFormat // DDPIXELFORMAT
{
  int dwSize;
  int dwFlags;
  int dwFourCC;
  int dwRGBBitCount;
  int dwRBitMask, dwGBitMask, dwBBitMask;
  int dwRGBAlphaBitMask;
};

struct D3D_Caps2
{
  int dwCaps1;
  int dwCaps2;
  int Reserved[2];
};

struct D3D_SurfaceDesc2
{
  int dwSize;
  int dwFlags;
  int dwHeight;
  int dwWidth;
  int dwPitchOrLinearSize;
  int dwDepth;
  int dwMipMapCount;
  int dwReserved1[11];
  D3D_PixelFormat ddpfPixelFormat;
  D3D_Caps2 ddsCaps;
  int dwReserved2;
};

// Enums

#define FOURCC(a, b, c, d) \
         ((unsigned int)((unsigned int)(a)      ) | \
                        ((unsigned int)(b) <<  8) | \
                        ((unsigned int)(c) << 16) | \
                        ((unsigned int)(d) << 24))

typedef enum
{
   DDS_COMPRESS_NONE = 0,
   DDS_COMPRESS_BC1,        /* DXT1  */
   DDS_COMPRESS_BC2,        /* DXT3  */
   DDS_COMPRESS_BC3,        /* DXT5  */
   DDS_COMPRESS_BC3N,       /* DXT5n */
   DDS_COMPRESS_BC4,        /* ATI1  */
   DDS_COMPRESS_BC5,        /* ATI2  */
   DDS_COMPRESS_AEXP,       /* DXT5  */
   DDS_COMPRESS_YCOCG,      /* DXT5  */
   DDS_COMPRESS_YCOCGS,     /* DXT5  */
   DDS_COMPRESS_MAX
} DDS_COMPRESSION_TYPE;

typedef enum
{
   DDS_SAVE_SELECTED_LAYER = 0,
   DDS_SAVE_CUBEMAP,
   DDS_SAVE_VOLUMEMAP,
   DDS_SAVE_MAX
} DDS_SAVE_TYPE;

typedef enum
{
   DDS_FORMAT_DEFAULT = 0,
   DDS_FORMAT_RGB8,
   DDS_FORMAT_RGBA8,
   DDS_FORMAT_BGR8,
   DDS_FORMAT_ABGR8,
   DDS_FORMAT_R5G6B5,
   DDS_FORMAT_RGBA4,
   DDS_FORMAT_RGB5A1,
   DDS_FORMAT_RGB10A2,
   DDS_FORMAT_R3G3B2,
   DDS_FORMAT_A8,
   DDS_FORMAT_L8,
   DDS_FORMAT_L8A8,
   DDS_FORMAT_AEXP,
   DDS_FORMAT_YCOCG,
   DDS_FORMAT_MAX
} DDS_FORMAT_TYPE;

typedef enum
{
   DDS_COLOR_DEFAULT = 0,
   DDS_COLOR_DISTANCE,
   DDS_COLOR_LUMINANCE,
   DDS_COLOR_INSET_BBOX,
   DDS_COLOR_MAX
} DDS_COLOR_TYPE;

typedef enum
{
   DDS_MIPMAP_DEFAULT = 0,
   DDS_MIPMAP_NEAREST,
   DDS_MIPMAP_BOX,
   DDS_MIPMAP_BILINEAR,
   DDS_MIPMAP_BICUBIC,
   DDS_MIPMAP_LANCZOS,
   DDS_MIPMAP_MAX
} DDS_MIPMAP_TYPE;

#define DDS_HEADERSIZE             128

#define DDSD_CAPS                  0x00000001
#define DDSD_HEIGHT                0x00000002
#define DDSD_WIDTH                 0x00000004
#define DDSD_PITCH                 0x00000008
#define DDSD_PIXELFORMAT           0x00001000
#define DDSD_MIPMAPCOUNT           0x00020000
#define DDSD_LINEARSIZE            0x00080000
#define DDSD_DEPTH                 0x00800000

#define DDPF_ALPHAPIXELS           0x00000001
#define DDPF_ALPHA                 0x00000002
#define DDPF_FOURCC                0x00000004
#define DDPF_PALETTEINDEXED8       0x00000020
#define DDPF_RGB                   0x00000040
#define DDPF_LUMINANCE             0x00020000

#define DDSCAPS_COMPLEX            0x00000008
#define DDSCAPS_TEXTURE            0x00001000
#define DDSCAPS_MIPMAP             0x00400000

#define DDSCAPS2_CUBEMAP           0x00000200
#define DDSCAPS2_CUBEMAP_POSITIVEX 0x00000400
#define DDSCAPS2_CUBEMAP_NEGATIVEX 0x00000800
#define DDSCAPS2_CUBEMAP_POSITIVEY 0x00001000
#define DDSCAPS2_CUBEMAP_NEGATIVEY 0x00002000
#define DDSCAPS2_CUBEMAP_POSITIVEZ 0x00004000
#define DDSCAPS2_CUBEMAP_NEGATIVEZ 0x00008000
#define DDSCAPS2_VOLUME            0x00200000

class DDDS
// A cross-platform DDS loader
{
  enum Max
  {
    MAX_MIPMAP_LEVEL=16       // For 65536x65536 images (2^16)
  };

  unsigned char *pixels[MAX_MIPMAP_LEVEL];     // Texture data
  int            bytes[MAX_MIPMAP_LEVEL];

  // Info extracted from file
  int wid,hgt;
  int mipmapLevels;
  int format;
  int internalFormat;
  int compressionType;
  int blockSize;                      // Used in passing compressed textures to OpenGL

public:
  DDDS();
  ~DDDS();

  int  GetWidth(){ return wid; }
  int  GetHeight(){ return hgt; }
  int  GetMipMapLevels(){ return mipmapLevels; }

  bool Load(cstring fname);

  DTexture *CreateTexture();
};

#endif