namespace PluggIt {

D_DEBUG_DOMAIN( PluggIt_Scaler, "PluggIt/Scaler", "PluggIt Scaler" );


typedef struct {
     DFBRegion   clip;
     const void *colors;
     unsigned long       protect;
     unsigned long       key;
} StretchCtx;

typedef void (*StretchHVx)( void             *dst,
                            int               dpitch,
                            const void       *src,
                            int               spitch,
                            int               width,
                            int               height,
                            int               dst_width,
                            int               dst_height,
                            const StretchCtx *ctx );

#define STRETCH_NONE           0
#define STRETCH_SRCKEY         1
#define STRETCH_PROTECT        2
#define STRETCH_SRCKEY_PROTECT 3
#define STRETCH_NUM            4

#define PIXEL_RGB16(r,g,b)     ( (((r)&0xF8) << 8) | \
                                 (((g)&0xFC) << 3) | \
                                 (((b)&0xF8) >> 3) )

/**********************************************************************************************************************/
/*** 16 bit RGB 565 scalers *******************************************************************************************/
/**********************************************************************************************************************/

#define DST_FORMAT              DSPF_RGB16
#define TABLE_NAME              stretch_hvx_RGB16
#define FUNC_NAME(UPDOWN,K,P,F) stretch_hvx_RGB16_ ## UPDOWN ## _ ## K ## P ## _ ## F
#define SHIFT_R5                5
#define SHIFT_R6                6
#define X_F81F                  0xf81f
#define X_07E0                  0x07e0
#define MASK_RGB                0xffff

#define FORMAT_RGB16
#include "stretch_up_down_16.h"
#undef FORMAT_RGB16

#undef DST_FORMAT
#undef TABLE_NAME
#undef FUNC_NAME
#undef SHIFT_R5
#undef SHIFT_R6
#undef X_F81F
#undef X_07E0
#undef MASK_RGB

/**********************************************************************************************************************/
/*** 32 bit RGB 8888 scalers ******************************************************************************************/
/**********************************************************************************************************************/

#define DST_FORMAT              DSPF_ARGB
#define TABLE_NAME              stretch_hvx_ARGB
#define FUNC_NAME(UPDOWN,K,P,F) stretch_hvx_ARGB_ ## UPDOWN ## _ ## K ## P ## _ ## F
#define SHIFT_R8                8
#define SHIFT_L8                8
#define X_00FF00FF              0x00ff00ff
#define X_FF00FF00              0xff00ff00
#define MASK_RGB                0x00ffffff

#define FORMAT_ARGB
#include "stretch_up_down_32.h"
#undef FORMAT_ARGB

#undef DST_FORMAT
#undef TABLE_NAME
#undef FUNC_NAME
#undef SHIFT_R8
#undef SHIFT_L8
#undef X_00FF00FF
#undef X_FF00FF00
#undef MASK_RGB

/**********************************************************************************************************************/
/*** 32 bit RGB 8888 scalers ******************************************************************************************/
/**********************************************************************************************************************/

#define DST_FORMAT              DSPF_RGB32
#define TABLE_NAME              stretch_hvx_RGB32
#define FUNC_NAME(UPDOWN,K,P,F) stretch_hvx_RGB32_ ## UPDOWN ## _ ## K ## P ## _ ## F
#define SHIFT_R8                8
#define SHIFT_L8                8
#define X_00FF00FF              0x00ff00ff
#define X_FF00FF00              0x0000ff00
#define MASK_RGB                0x00ffffff

#define FORMAT_RGB32
#include "stretch_up_down_32.h"
#undef FORMAT_RGB32

#undef DST_FORMAT
#undef TABLE_NAME
#undef FUNC_NAME
#undef SHIFT_R8
#undef SHIFT_L8
#undef X_00FF00FF
#undef X_FF00FF00
#undef MASK_RGB


class Scaler
{

     public Scaler() {
     }

     public void scale( DFBSurfacePixelFormat  format,
                        void                  *dst,
                        int                    dpitch,
                        const void            *src,
                        int                    spitch,
                        int                    width,
                        int                    height,
                        int                    dst_width,
                        int                    dst_height,
                        const DFBRegion       &clip )
     {
          D_DEBUG_AT( PluggIt_Scaler, "%s( %s, %p [%d], %p [%d], %dx%d -> %dx%d, clip %4d,%4d-%4dx%4d )\n",
                      __FUNCTION__, dfb_pixelformat_name( format ), dst, dpitch, src, spitch, width, height,
                      dst_width, dst_height, DFB_RECTANGLE_VALS_FROM_REGION( &clip ) );


          StretchCtx ctx;

          ctx.clip = clip;

          switch (format) {
               case DSPF_RGB16:
                    if (width <= dst_width || height <= dst_height)
                         stretch_hvx_RGB16_up____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
                    else
                         stretch_hvx_RGB16_down____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
                    break;

               case DSPF_RGB32:
                    if (width <= dst_width || height <= dst_height)
                         stretch_hvx_RGB32_up____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
                    else
                         stretch_hvx_RGB32_down____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
                    break;

               case DSPF_ARGB:
                    if (width <= dst_width || height <= dst_height)
                         stretch_hvx_ARGB_up____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
                    else
                         stretch_hvx_ARGB_down____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
                    break;

               default:
                    D_UNIMPLEMENTED();
                    break;
          }
     }
};



}