dib.c

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/*
 * PROJECT:         Win32 subsystem
 * LICENSE:         See COPYING in the top level directory
 * FILE:            win32ss/gdi/dib/dib.c
 * PURPOSE:         ROP handling, function pointer arrays, misc
 * PROGRAMMERS:     Ge van Geldorp
 */


#include <win32k.h>

#define NDEBUG
#include <debug.h>

/* Static data */

unsigned char notmask[2] = { 0x0f, 0xf0 };
unsigned char altnotmask[2] = { 0xf0, 0x0f };

DIB_FUNCTIONS DibFunctionsForBitmapFormat[] =
{
  /* 0 */
  {
    Dummy_PutPixel, Dummy_GetPixel, Dummy_HLine, Dummy_VLine,
    Dummy_BitBlt, Dummy_BitBlt, Dummy_StretchBlt, Dummy_TransparentBlt,
    Dummy_ColorFill, Dummy_AlphaBlend
  },
  /* BMF_1BPP */
  {
    DIB_1BPP_PutPixel, DIB_1BPP_GetPixel, DIB_1BPP_HLine, DIB_1BPP_VLine,
    DIB_1BPP_BitBlt, DIB_1BPP_BitBltSrcCopy, DIB_XXBPP_StretchBlt,
    DIB_1BPP_TransparentBlt, DIB_1BPP_ColorFill, DIB_XXBPP_AlphaBlend
  },
  /* BMF_4BPP */
  {
    DIB_4BPP_PutPixel, DIB_4BPP_GetPixel, DIB_4BPP_HLine, DIB_4BPP_VLine,
    DIB_4BPP_BitBlt, DIB_4BPP_BitBltSrcCopy, DIB_XXBPP_StretchBlt,
    DIB_4BPP_TransparentBlt, DIB_4BPP_ColorFill, DIB_XXBPP_AlphaBlend
  },
  /* BMF_8BPP */
  {
    DIB_8BPP_PutPixel, DIB_8BPP_GetPixel, DIB_8BPP_HLine, DIB_8BPP_VLine,
    DIB_8BPP_BitBlt, DIB_8BPP_BitBltSrcCopy, DIB_XXBPP_StretchBlt,
    DIB_8BPP_TransparentBlt, DIB_8BPP_ColorFill, DIB_XXBPP_AlphaBlend
  },
  /* BMF_16BPP */
  {
    DIB_16BPP_PutPixel, DIB_16BPP_GetPixel, DIB_16BPP_HLine, DIB_16BPP_VLine,
    DIB_16BPP_BitBlt, DIB_16BPP_BitBltSrcCopy, DIB_XXBPP_StretchBlt,
    DIB_16BPP_TransparentBlt, DIB_16BPP_ColorFill, DIB_16BPP_AlphaBlend
  },
  /* BMF_24BPP */
  {
    DIB_24BPP_PutPixel, DIB_24BPP_GetPixel, DIB_24BPP_HLine, DIB_24BPP_VLine,
    DIB_24BPP_BitBlt, DIB_24BPP_BitBltSrcCopy, DIB_XXBPP_StretchBlt,
    DIB_24BPP_TransparentBlt, DIB_24BPP_ColorFill, DIB_24BPP_AlphaBlend
  },
  /* BMF_32BPP */
  {
    DIB_32BPP_PutPixel, DIB_32BPP_GetPixel, DIB_32BPP_HLine, DIB_32BPP_VLine,
    DIB_32BPP_BitBlt, DIB_32BPP_BitBltSrcCopy, DIB_XXBPP_StretchBlt,
    DIB_32BPP_TransparentBlt, DIB_32BPP_ColorFill, DIB_32BPP_AlphaBlend
  },
  /* BMF_4RLE */
  {
    Dummy_PutPixel, Dummy_GetPixel, Dummy_HLine, Dummy_VLine,
    Dummy_BitBlt, Dummy_BitBlt, Dummy_StretchBlt, Dummy_TransparentBlt,
    Dummy_ColorFill, Dummy_AlphaBlend
  },
  /* BMF_8RLE */
  {
    Dummy_PutPixel, Dummy_GetPixel, Dummy_HLine, Dummy_VLine,
    Dummy_BitBlt, Dummy_BitBlt, Dummy_StretchBlt, Dummy_TransparentBlt,
    Dummy_ColorFill, Dummy_AlphaBlend
  },
  /* BMF_JPEG */
  {
    Dummy_PutPixel, Dummy_GetPixel, Dummy_HLine, Dummy_VLine,
    Dummy_BitBlt, Dummy_BitBlt, Dummy_StretchBlt, Dummy_TransparentBlt,
    Dummy_ColorFill, Dummy_AlphaBlend
  },
  /* BMF_PNG */
  {
    Dummy_PutPixel, Dummy_GetPixel, Dummy_HLine, Dummy_VLine,
    Dummy_BitBlt, Dummy_BitBlt, Dummy_StretchBlt, Dummy_TransparentBlt,
    Dummy_ColorFill, Dummy_AlphaBlend
  }
};


ULONG
DIB_DoRop(ULONG Rop, ULONG Dest, ULONG Source, ULONG Pattern)
{
  ULONG ResultNibble;
  ULONG Result = 0;
  ULONG i;
static const ULONG ExpandDest[16] =
    {
      0x55555555 /* 0000 */,
      0x555555AA /* 0001 */,
      0x5555AA55 /* 0010 */,
      0x5555AAAA /* 0011 */,
      0x55AA5555 /* 0100 */,
      0x55AA55AA /* 0101 */,
      0x55AAAA55 /* 0110 */,
      0x55AAAAAA /* 0111 */,
      0xAA555555 /* 1000 */,
      0xAA5555AA /* 1001 */,
      0xAA55AA55 /* 1010 */,
      0xAA55AAAA /* 1011 */,
      0xAAAA5555 /* 1100 */,
      0xAAAA55AA /* 1101 */,
      0xAAAAAA55 /* 1110 */,
      0xAAAAAAAA /* 1111 */,
    };
  static const ULONG ExpandSource[16] =
    {
      0x33333333 /* 0000 */,
      0x333333CC /* 0001 */,
      0x3333CC33 /* 0010 */,
      0x3333CCCC /* 0011 */,
      0x33CC3333 /* 0100 */,
      0x33CC33CC /* 0101 */,
      0x33CCCC33 /* 0110 */,
      0x33CCCCCC /* 0111 */,
      0xCC333333 /* 1000 */,
      0xCC3333CC /* 1001 */,
      0xCC33CC33 /* 1010 */,
      0xCC33CCCC /* 1011 */,
      0xCCCC3333 /* 1100 */,
      0xCCCC33CC /* 1101 */,
      0xCCCCCC33 /* 1110 */,
      0xCCCCCCCC /* 1111 */,
    };
  static const ULONG ExpandPattern[16] =
    {
      0x0F0F0F0F /* 0000 */,
      0x0F0F0FF0 /* 0001 */,
      0x0F0FF00F /* 0010 */,
      0x0F0FF0F0 /* 0011 */,
      0x0FF00F0F /* 0100 */,
      0x0FF00FF0 /* 0101 */,
      0x0FF0F00F /* 0110 */,
      0x0FF0F0F0 /* 0111 */,
      0xF00F0F0F /* 1000 */,
      0xF00F0FF0 /* 1001 */,
      0xF00FF00F /* 1010 */,
      0xF00FF0F0 /* 1011 */,
      0xF0F00F0F /* 1100 */,
      0xF0F00FF0 /* 1101 */,
      0xF0F0F00F /* 1110 */,
      0xF0F0F0F0 /* 1111 */,
    };

    Rop &=0xFF;
    switch(Rop)
    {

        /* Optimized code for the various named rop codes. */
        case R3_OPINDEX_NOOP:        return(Dest);
        case R3_OPINDEX_BLACKNESS:   return(0);
        case R3_OPINDEX_NOTSRCERASE: return(~(Dest | Source));
        case R3_OPINDEX_NOTSRCCOPY:  return(~Source);
        case R3_OPINDEX_SRCERASE:    return((~Dest) & Source);
        case R3_OPINDEX_DSTINVERT:   return(~Dest);
        case R3_OPINDEX_PATINVERT:   return(Dest ^ Pattern);
        case R3_OPINDEX_SRCINVERT:   return(Dest ^ Source);
        case R3_OPINDEX_SRCAND:      return(Dest & Source);
        case R3_OPINDEX_MERGEPAINT:  return(Dest | (~Source));
        case R3_OPINDEX_SRCPAINT:    return(Dest | Source);
        case R3_OPINDEX_MERGECOPY:   return(Source & Pattern);
        case R3_OPINDEX_SRCCOPY:     return(Source);
        case R3_OPINDEX_PATCOPY:     return(Pattern);
        case R3_OPINDEX_PATPAINT:    return(Dest | (~Source) | Pattern);
        case R3_OPINDEX_WHITENESS:   return(0xFFFFFFFF);
    }

  /* Expand the ROP operation to all four bytes */
  Rop |= (Rop << 24) | (Rop << 16) | (Rop << 8);
  /* Do the operation on four bits simultaneously. */
  Result = 0;
  for (i = 0; i < 8; i++)
  {
    ResultNibble = Rop & ExpandDest[Dest & 0xF] & ExpandSource[Source & 0xF] & ExpandPattern[Pattern & 0xF];
    Result |= (((ResultNibble & 0xFF000000) ? 0x8 : 0x0) | ((ResultNibble & 0x00FF0000) ? 0x4 : 0x0) |
    ((ResultNibble & 0x0000FF00) ? 0x2 : 0x0) | ((ResultNibble & 0x000000FF) ? 0x1 : 0x0)) << (i * 4);
    Dest >>= 4;
    Source >>= 4;
    Pattern >>= 4;
  }
  return(Result);
}

VOID Dummy_PutPixel(SURFOBJ* SurfObj, LONG x, LONG y, ULONG c)
{
  return;
}

ULONG Dummy_GetPixel(SURFOBJ* SurfObj, LONG x, LONG y)
{
  return 0;
}

VOID Dummy_HLine(SURFOBJ* SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
{
  return;
}

VOID Dummy_VLine(SURFOBJ* SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
{
  return;
}

BOOLEAN Dummy_BitBlt(PBLTINFO BltInfo)
{
  return FALSE;
}

BOOLEAN Dummy_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
                         SURFOBJ *PatternSurface, SURFOBJ *MaskSurf,
                         RECTL*  DestRect,  RECTL  *SourceRect,
                         POINTL* MaskOrigin, BRUSHOBJ* Brush,
                         POINTL* BrushOrign,
                         XLATEOBJ *ColorTranslation,
                         ROP4 Rop)
{
  return FALSE;
}

BOOLEAN Dummy_TransparentBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
                             RECTL*  DestRect,  RECTL  *SourceRect,
                             XLATEOBJ *ColorTranslation, ULONG iTransColor)
{
  return FALSE;
}

BOOLEAN Dummy_ColorFill(SURFOBJ* Dest, RECTL* DestRect, ULONG Color)
{
  return FALSE;
}


BOOLEAN
Dummy_AlphaBlend(SURFOBJ* Dest, SURFOBJ* Source, RECTL* DestRect,
                 RECTL* SourceRect, CLIPOBJ* ClipRegion,
                 XLATEOBJ* ColorTranslation, BLENDOBJ* BlendObj)
{
  return FALSE;
}

/* EOF */