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windows-nt/Source/XPSP1/NT/multimedia/media/avi/drawdib.16/setdi.c

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2020-09-26 03:20:57 -05:00
/**************************************************************************
*
* SETDI.C - contains routines for doing a SetDIBits() into a bitmap.
*
**************************************************************************/
#include <windows.h>
#include <windowsx.h>
#include "lockbm.h"
#include "setdi.h"
#define NAKED
/**************************************************************************
*
* format conversion functions.
*
* special functions....
* copy_8_8 (no translate)
* dither_8_8 (dither from 8bpp to fixed color device (like VGA, SVGA...)
*
**************************************************************************/
extern CONVERTPROC copy_8_8, dither_8_8;
extern CONVERTPROC convert_8_8, convert_8_16, convert_8_24, convert_8_32, convert_8_VGA, convert_8_565, convert_8_RGB, convert_8_RGBX;
extern CONVERTPROC convert_16_8, convert_16_16, convert_16_24, convert_16_32, convert_16_VGA, convert_16_565, convert_16_RGB, convert_16_RGBX;
extern CONVERTPROC convert_24_8, convert_24_16, convert_24_24, convert_24_32, convert_24_VGA, convert_24_565, convert_24_RGB, convert_24_RGBX;
extern CONVERTPROC convert_32_8, convert_32_16, convert_32_24, convert_32_32, convert_32_VGA, convert_32_565, convert_32_RGB, convert_32_RGBX;
static INITPROC init_8_8, init_8_16, init_8_24, init_8_32, init_8_VGA, init_8_565, init_8_RGB, init_8_RGBX;
static INITPROC init_16_8, init_16_16, init_16_24, init_16_32, init_16_VGA, init_16_565, init_16_RGB, init_16_RGBX;
static INITPROC init_24_8, init_24_16, init_24_24, init_24_32, init_24_VGA, init_24_565, init_24_RGB, init_24_RGBX;
static INITPROC init_32_8, init_32_16, init_32_24, init_32_32, init_32_VGA, init_32_565, init_32_RGB, init_32_RGBX;
INITPROC init_setdi;
static CONVERTPROC convert_setdi;
static FREEPROC free_common;
static LPVOID init_dither_8_8(HDC hdc, LPBITMAPINFOHEADER lpbi);
/**************************************************************************
*
* some conversions we dont do
*
**************************************************************************/
#define convert_8_VGA NULL
#define convert_16_VGA NULL
#define convert_24_VGA NULL
#define convert_32_VGA NULL
#define convert_8_32 NULL
#define convert_16_32 NULL
#define convert_24_32 NULL
#define convert_32_32 NULL
#define convert_8_RGBX NULL
#define convert_16_RGBX NULL
#define convert_24_RGBX NULL
#define convert_32_RGBX NULL
#define convert_8_RGB NULL
#define convert_16_RGB NULL
#define convert_24_RGB NULL
#define convert_32_RGB NULL
#define convert_16_8 NULL // not now later!
#define convert_24_8 NULL
#define convert_32_8 NULL
/**************************************************************************
*
* format conversion tables...
*
* BITMAP types
*
* 8 0
* 16 1
* 24 2
* 32 3
* VGA 4
* 16 565 5
* 24 RGB 6
* 32 RGB 7
*
**************************************************************************/
static PCONVERTPROC ConvertProcTable[4][8] = {
{convert_8_8, convert_8_16, convert_8_24, convert_8_32, convert_8_VGA, convert_8_565, convert_8_RGB, convert_8_RGBX},
{convert_16_8, convert_16_16, convert_16_24, convert_16_32, convert_16_VGA, convert_16_565, convert_16_RGB, convert_16_RGBX},
{convert_24_8, convert_24_16, convert_24_24, convert_24_32, convert_24_VGA, convert_24_565, convert_24_RGB, convert_24_RGBX},
{convert_32_8, convert_32_16, convert_32_24, convert_32_32, convert_32_VGA, convert_32_565, convert_32_RGB, convert_32_RGBX},
};
static PINITPROC InitProcTable[4][8] = {
{init_8_8, init_8_16, init_8_24, init_8_32, init_8_VGA, init_8_565, init_8_RGB, init_8_RGBX},
{init_16_8, init_16_16, init_16_24, init_16_32, init_16_VGA, init_16_565, init_16_RGB, init_16_RGBX},
{init_24_8, init_24_16, init_24_24, init_24_32, init_24_VGA, init_24_565, init_24_RGB, init_24_RGBX},
{init_32_8, init_32_16, init_32_24, init_32_32, init_32_VGA, init_32_565, init_32_RGB, init_32_RGBX},
};
/**************************************************************************
**************************************************************************/
#define RGB555(r,g,b) (\
(((WORD)(r) >> 3) << 10) | \
(((WORD)(g) >> 3) << 5) | \
(((WORD)(b) >> 3) << 0) )
#define RGB565(r,g,b) (\
(((WORD)(r) >> 3) << 11) | \
(((WORD)(g) >> 2) << 5) | \
(((WORD)(b) >> 3) << 0) )
/**************************************************************************
**************************************************************************/
#ifdef DEBUG
static
#else
__inline
#endif
LONG BitmapXY(IBITMAP *pbm, int x, int y)
{
LONG offset = pbm->bmOffset;
//!!! wrong!!! but y for bitmaps is always zero....
// if (pbm->bmFillBytes)
// offset += (y / pbm->bmScanSegment) * pbm->bmFillBytes;
offset += y * (long)pbm->bmNextScan;
offset += x * pbm->bmBitsPixel / 8;
return offset;
}
/**************************************************************************
* @doc INTERNAL SetBitmapBegin
*
* @api BOOL | SetBitmapBegin | prepare to do a SetDIBits() into a bitmap
*
* @rdesc Returns TRUE if success.
*
**************************************************************************/
BOOL FAR SetBitmapBegin(
PSETDI psd,
HDC hdc, //
HBITMAP hbm, // bitmap to set into
LPBITMAPINFOHEADER lpbi, // --> BITMAPINFO of source
UINT DibUsage)
{
BITMAP bm;
SetBitmapEnd(psd); // free and old stuff
GetObject(hbm, sizeof(bm), &bm);
psd->hbm = hbm;
// psd->hdc = hdc;
// psd->hpal = hpal;
psd->DibUsage= DibUsage;
psd->color_convert = NULL;
psd->convert = NULL;
psd->size = sizeof(SETDI);
if (!GetBitmapDIB(lpbi, NULL, &psd->bmSrc, sizeof(psd->bmSrc)))
return FALSE;
//
// make sure we can lock the bitmap
//
if (GetBitmap(hbm, &psd->bmDst, sizeof(psd->bmDst)) &&
psd->bmDst.bmFillBytes <= 0 &&
psd->bmSrc.bmType > 0 && psd->bmSrc.bmType <= 4 &&
psd->bmDst.bmType > 0 && psd->bmDst.bmType <= 8)
{
psd->init = InitProcTable[psd->bmSrc.bmType-1][psd->bmDst.bmType-1];
psd->convert = ConvertProcTable[psd->bmSrc.bmType-1][psd->bmDst.bmType-1];
psd->free = free_common;
}
//
// if we cant convert ourself try SetDIBits()
//
if (psd->convert == NULL)
{
psd->convert = convert_setdi;
psd->init = init_setdi;
psd->free = NULL;
}
if (psd->init)
{
psd->hdc = hdc;
if (!psd->init(psd))
{
psd->hdc = 0;
psd->size = 0;
psd->convert = NULL;
return FALSE;
}
psd->hdc = NULL;
psd->hpal = NULL;
}
return TRUE;
}
/**************************************************************************
* @doc INTERNAL SetBitmapColorChange
*
* @api BOOL | SetBitmapColorChange | re-init the color conversion
*
* @rdesc Returns TRUE if success.
*
**************************************************************************/
void FAR SetBitmapColorChange(PSETDI psd, HDC hdc, HPALETTE hpal)
{
if (psd->size != sizeof(SETDI))
return;
if (hdc == NULL)
return;
if (psd->free) //!!! ack?
psd->free(psd);
psd->hdc = hdc;
psd->hpal = hpal;
if (psd->init)
psd->init(psd);
psd->hdc = NULL;
psd->hpal = NULL;
}
/**************************************************************************
* @doc INTERNAL SetBitmapEnd
*
* @api void | SetBitmapEnd | clean out a SETDI structure
*
**************************************************************************/
void FAR SetBitmapEnd(PSETDI psd)
{
if (psd->size != sizeof(SETDI))
return;
if (psd->free)
psd->free(psd);
psd->size = 0;
psd->convert = NULL;
psd->init = NULL;
psd->free = NULL;
}
/**************************************************************************
* @doc INTERNAL SetBitmap
*
* @api BOOL | SetBitmap | convert DIB bits to bitmaps bits.
*
**************************************************************************/
BOOL FAR SetBitmap(PSETDI psd, int DstX, int DstY, int DstDX, int DstDY, LPVOID lpBits, int SrcX, int SrcY, int SrcDX, int SrcDY)
{
if (psd->size != sizeof(SETDI))
return FALSE;
psd->convert(
psd->bmDst.bmBits, // --> dst.
BitmapXY(&psd->bmDst, DstX, DstY), // offset to start at
psd->bmDst.bmNextScan, // dst_next_scan.
psd->bmDst.bmFillBytes, // fill bytes
lpBits, // --> Src.
BitmapXY(&psd->bmSrc, SrcX, SrcY), // offset to start at
psd->bmSrc.bmNextScan, // Src_next_scan.
DstDX,
DstDY,
psd->color_convert);
return TRUE;
}
/**************************************************************************
*
* cleanup stuff
*
**************************************************************************/
static BOOL free_common(PSETDI psd)
{
//
// clean up what we did
//
if (psd->color_convert != NULL)
GlobalFreePtr(psd->color_convert);
psd->color_convert = NULL;
return TRUE;
}
/**************************************************************************
*
* GetPaletteTranslate
*
* get the palette to physical translate table.
*
* does this by calling GDI, this should always work.
* this only works on a palette device.
*
**************************************************************************/
BOOL GetPaletteTranslate(HDC hdc, LPBYTE pb)
{
int i;
int n;
DWORD rgb;
DWORD *prgb;
prgb = (DWORD *)LocalAlloc(LPTR, 256 * sizeof(DWORD));
if (prgb == NULL)
return TRUE;
GetSystemPaletteEntries(hdc, 0, 256,(PALETTEENTRY FAR *)prgb);
for (n=0; n<256; n++) //!!! is this needed.
prgb[n] &= 0x00FFFFFF;
for (i=0; i<256; i++)
{
//
// GDI will figure out what physical color this palette
// index is mapped to.
//
rgb = GetNearestColor(hdc, PALETTEINDEX(i)) & 0x00FFFFFF;
//
// quick check for identity map.
//
if (prgb[i] == rgb)
{
pb[i] = (BYTE)i;
continue;
}
//
// now we have to find the rgb in the physical palette
//
for (n=0; n<256; n++)
if (prgb[n] == rgb)
break;
//
// our search should never fail, because GDI gave us a RGB
// in the palette.
//
if (n == 256) //!!! should never happen
n = 0;
pb[i] = (BYTE)n;
}
LocalFree((HLOCAL)prgb);
return TRUE;
}
/**************************************************************************
*
* @doc INTERNAL GetPaletteMap
*
* @api BOOL | GetPhysPaletteMap | gets the physical mapping for a DIB
*
* returns TRUE if the mapping is a 1:1 mapping, FALSE otherwise
*
**************************************************************************/
BOOL GetPhysDibPaletteMap(HDC hdc, LPBITMAPINFOHEADER lpbi, UINT Usage, LPBYTE pb)
{
int i;
int n;
BYTE ab[256];
//
// this will give us the palette to physical mapping.
//
GetPaletteTranslate(hdc, ab);
if (Usage == DIB_PAL_COLORS)
{
WORD FAR *pw = (WORD FAR *)(lpbi+1);
for (i=0; i<256; i++)
pb[i] = ab[pw[i]];
}
else
{
; //!!! should never happen with current code
}
//
// test for 1:1 translate
//
n = (int)lpbi->biClrUsed ? (int)lpbi->biClrUsed : 256;
for (i=0; i<n; i++)
{
if (pb[i] != i)
{
//
// some ET4000 drivers have the same color (128,128,128)
// at index 7 and at index 248.
//
// we should detect a identity palette in this case.
//
if (i == 248 && pb[i] == 7)
{
pb[i] = 248;
continue;
}
break;
}
}
return i == n;
}
/**************************************************************************
*
* @doc INTERNAL
*
* @api void | GetDibPaletteMap | gets the mapping of a DIB color table
* in foreground palette index's
*
**************************************************************************/
BOOL GetDibPaletteMap(HDC hdc, LPBITMAPINFOHEADER lpbi, UINT Usage, LPBYTE pb)
{
HBITMAP hbm;
int i;
int n;
LONG biWidth = lpbi->biWidth;
LONG biHeight = lpbi->biHeight;
n = (int)lpbi->biClrUsed ? (int)lpbi->biClrUsed : 256;
for (i=0; i<n; i++)
pb[i] = i;
for (; i<256; i++)
pb[i] = 0;
if (lpbi->biBitCount != 8)
return FALSE;
hbm = CreateCompatibleBitmap(hdc,256,1);
lpbi->biWidth = 256;
lpbi->biHeight = 1;
SetDIBits(hdc, hbm, 0, 1, pb, (LPBITMAPINFO)lpbi, Usage);
GetBitmapBits(hbm, 256, pb);
DeleteObject(hbm);
lpbi->biWidth = biWidth;
lpbi->biHeight = biHeight;
//
// test for 1:1 translate
//
for (i=0; i<n; i++)
{
if (pb[i] != i)
{
//
// some ET4000 drivers have the same color (128,128,128)
// at index 7 and at index 248.
//
// we should detect a identity palette in this case.
//
if (i == 248 && pb[i] == 7)
{
pb[i] = 248;
continue;
}
break;
}
}
return i == n;
}
/**************************************************************************
*
* convert for SetDIBits
*
**************************************************************************/
void FAR PASCAL convert_setdi(
LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
PSETDI psd = (PSETDI)(LONG)pd;
LPBITMAPINFOHEADER lpbi;
lpbi = (LPBITMAPINFOHEADER)psd->bmSrc.bmBitmapInfo;
lpbi->biHeight = dy;
SetDIBits(
psd->hdc,
psd->hbm,
0,(int)dy,
((BYTE _huge *)ps) + ds - dd,
(LPBITMAPINFO)lpbi,
psd->DibUsage);
lpbi->biHeight = psd->bmSrc.bmHeight;
}
/**************************************************************************
*
* init stuff for SetDIBits
*
**************************************************************************/
BOOL init_setdi(PSETDI psd)
{
UINT u;
HDC hdc;
LPBYTE p;
LPBITMAPINFOHEADER lpbi;
// test to see if SetDIBits() works.
// !!! we should check for 16 or a 32bit DIB and do the escape.
// !!! on a palette device we need to build a palette map!!!
if (psd->bmSrc.bmBitsPixel == 16 ||
psd->bmSrc.bmBitsPixel == 32)
return FALSE;
// convert_setdi will need this.
psd->bmDst.bmBits = (LPVOID)(UINT)psd;
psd->bmDst.bmOffset = 0;
psd->bmDst.bmBitsPixel = psd->bmSrc.bmBitsPixel;
if (psd->hdc && psd->hpal)
{
// map colors to current palette!!!!!!!!!!!!!!!!!!!!!!!!!!
//set this to be the BITMAPINFO + color map.
psd->color_convert = 0;
}
lpbi = (LPBITMAPINFOHEADER)psd->bmSrc.bmBitmapInfo;
lpbi->biHeight = 1;
p = (LPBYTE)GlobalAllocPtr(GHND,psd->bmSrc.bmWidthBytes);
hdc = GetDC(NULL);
u = SetDIBits(
hdc,
psd->hbm,0,1,p,
(LPBITMAPINFO)psd->bmSrc.bmBitmapInfo,
psd->DibUsage);
ReleaseDC(NULL, hdc);
lpbi->biHeight = psd->bmSrc.bmHeight;
GlobalFreePtr(p);
return u == 1;
}
/**************************************************************************
*
* init stuff for 8bpp bitmaps
*
**************************************************************************/
static BOOL init_8_8(PSETDI psd)
{
LPBITMAPINFOHEADER lpbi;
//
// if we are mapping from one DIB to another figure this out
//
if (psd->hdc == NULL || psd->bmDst.bmBitmapInfo != 0)
{
// we assume this routine will not be used for color matching
// from DIB to DIB, so give up.
psd->convert = copy_8_8;
return TRUE;
}
//
// we are mapping to a device (HDC)
//
// we need to compute a 8-->8 conversion table, from the source colors
// (in psd->lpbiSrc) to the colors on the device.
//
// how we do this depends on weather the device is a palette device or not.
//
lpbi = (LPBITMAPINFOHEADER)psd->bmSrc.bmBitmapInfo;
if (GetDeviceCaps(psd->hdc, RASTERCAPS) & RC_PALETTE)
{
if (psd->hpal == NULL)
{
// no palette to match to yet
psd->convert = copy_8_8;
return TRUE;
}
if (psd->color_convert == NULL)
psd->color_convert = GlobalAllocPtr(GHND, 256);
//
// we can do this one of two ways,
//
// we can always convert to the palette foreground mapping, or
//
// we can convert to the current colors always (using this method
// we will need to recompute the xlat table on every palette
// change)
//
// lets convert to the current device colors. (this may cause
// problems we will check on later...)
//
#ifdef NAKED
if (GetPhysDibPaletteMap(psd->hdc, lpbi, psd->DibUsage, psd->color_convert))
#else
if (GetDibPaletteMap(psd->hdc, lpbi, psd->DibUsage, psd->color_convert))
#endif
psd->convert = copy_8_8;
else
psd->convert = convert_8_8;
}
else
{
// !!!we should check for solid colors (ie no dither needed) and also
// check for 1:1 (no translate)
if (psd->color_convert == NULL) //!!!
psd->color_convert = init_dither_8_8(psd->hdc, lpbi);
psd->convert = dither_8_8;
//!!! we need to give the device colors to the caller
}
return TRUE;
}
static BOOL init_16_8(PSETDI psd)
{
return FALSE; // we dont handle dither yet!
}
static BOOL init_24_8(PSETDI psd)
{
return FALSE; // we dont handle dither yet!
}
static BOOL init_32_8(PSETDI psd)
{
return FALSE; // we dont handle dither yet!
}
/**************************************************************************
*
* init stuff for 16bpp bitmaps
*
**************************************************************************/
static BOOL init_8_16(PSETDI psd)
{
WORD FAR*pw;
int i;
int n;
LPRGBQUAD prgb;
LPBITMAPINFOHEADER lpbi;
lpbi = (LPBITMAPINFOHEADER)psd->bmSrc.bmBitmapInfo;
if (psd->color_convert == NULL) //!!!
psd->color_convert = GlobalAllocPtr(GHND, 256*2);
n = (lpbi->biClrUsed == 0) ? 256 : (int)lpbi->biClrUsed;
prgb = (LPRGBQUAD)((LPBYTE)lpbi + (int)lpbi->biSize);
pw = psd->color_convert;
for (i=0; i<n; i++)
pw[i] = RGB555(prgb[i].rgbRed, prgb[i].rgbGreen, prgb[i].rgbBlue);
for (; i<256; i++)
pw[i] = 0;
return TRUE;
}
static BOOL init_16_16(PSETDI psd)
{
return TRUE;
}
static BOOL init_24_16(PSETDI psd)
{
return TRUE;
}
static BOOL init_32_16(PSETDI psd)
{
return TRUE;
}
/**************************************************************************
*
* init stuff for 24bpp bitmaps
*
**************************************************************************/
static BOOL init_8_24(PSETDI psd)
{
DWORD FAR*pd;
int i;
int n;
LPRGBQUAD prgb;
LPBITMAPINFOHEADER lpbi;
lpbi = (LPBITMAPINFOHEADER)psd->bmSrc.bmBitmapInfo;
if (psd->color_convert == NULL) //!!!
psd->color_convert = GlobalAllocPtr(GHND, 256*4);
n = (lpbi->biClrUsed == 0) ? 256 : (int)lpbi->biClrUsed;
prgb = (LPRGBQUAD)((LPBYTE)lpbi + (int)lpbi->biSize);
pd = psd->color_convert;
for (i=0; i<n; i++)
pd[i] = RGB(prgb[i].rgbBlue, prgb[i].rgbGreen, prgb[i].rgbRed);
for (; i<256; i++)
pd[i] = 0;
return TRUE;
}
static BOOL init_16_24(PSETDI psd)
{
return TRUE;
}
static BOOL init_24_24(PSETDI psd)
{
return TRUE;
}
static BOOL init_32_24(PSETDI psd)
{
return TRUE;
}
/**************************************************************************
*
* init stuff for 32bpp bitmaps
*
**************************************************************************/
static BOOL init_8_32(PSETDI psd)
{
return FALSE;
////return init_8_24(psd);
}
static BOOL init_16_32(PSETDI psd)
{
return FALSE;
}
static BOOL init_24_32(PSETDI psd)
{
return FALSE;
}
static BOOL init_32_32(PSETDI psd)
{
return FALSE;
}
/**************************************************************************
*
* init stuff for VGA bitmaps
*
**************************************************************************/
static BOOL init_8_VGA(PSETDI psd)
{
return FALSE;
}
static BOOL init_16_VGA(PSETDI psd)
{
return FALSE;
}
static BOOL init_24_VGA(PSETDI psd)
{
return FALSE;
}
static BOOL init_32_VGA(PSETDI psd)
{
return FALSE;
}
/**************************************************************************
*
* init stuff for RGB 565 bitmaps
*
**************************************************************************/
static BOOL init_8_565(PSETDI psd)
{
WORD FAR*pw;
int i;
int n;
LPRGBQUAD prgb;
LPBITMAPINFOHEADER lpbi;
lpbi = (LPBITMAPINFOHEADER)psd->bmSrc.bmBitmapInfo;
if (psd->color_convert == NULL) //!!!
psd->color_convert = GlobalAllocPtr(GHND, 256*2);
n = (lpbi->biClrUsed == 0) ? 256 : (int)lpbi->biClrUsed;
prgb = (LPRGBQUAD)((LPBYTE)lpbi + (int)lpbi->biSize);
pw = psd->color_convert;
for (i=0; i<n; i++)
pw[i] = RGB565(prgb[i].rgbRed, prgb[i].rgbGreen, prgb[i].rgbBlue);
for (; i<256; i++)
pw[i] = 0;
return TRUE;
}
static BOOL init_16_565(PSETDI psd)
{
return TRUE;
}
static BOOL init_24_565(PSETDI psd)
{
return TRUE;
}
static BOOL init_32_565(PSETDI psd)
{
return TRUE;
}
/**************************************************************************
*
* init stuff for RGB 24bpp bitmaps
*
**************************************************************************/
static BOOL init_8_RGB(PSETDI psd)
{
DWORD FAR *pd;
int i;
int n;
LPRGBQUAD prgb;
LPBITMAPINFOHEADER lpbi;
lpbi = (LPBITMAPINFOHEADER)psd->bmSrc.bmBitmapInfo;
if (psd->color_convert == NULL) //!!!
psd->color_convert = GlobalAllocPtr(GHND, 256*4);
n = (lpbi->biClrUsed == 0) ? 256 : (int)lpbi->biClrUsed;
prgb = (LPRGBQUAD)((LPBYTE)lpbi + (int)lpbi->biSize);
pd = psd->color_convert;
for (i=0; i<n; i++)
pd[i] = RGB(prgb[i].rgbRed, prgb[i].rgbGreen, prgb[i].rgbBlue);
for (; i<256; i++)
pd[i] = 0;
return TRUE;
}
static BOOL init_16_RGB(PSETDI psd)
{
return FALSE;
}
static BOOL init_24_RGB(PSETDI psd)
{
return FALSE;
}
static BOOL init_32_RGB(PSETDI psd)
{
return FALSE;
}
/**************************************************************************
*
* init stuff for RGB 32bpp bitmaps
*
**************************************************************************/
static BOOL init_8_RGBX(PSETDI psd)
{
return init_8_RGB(psd);
}
static BOOL init_16_RGBX(PSETDI psd)
{
return FALSE;
}
static BOOL init_24_RGBX(PSETDI psd)
{
return FALSE;
}
static BOOL init_32_RGBX(PSETDI psd)
{
return FALSE;
}
/**************************************************************************
*
* init_dither_8_8
*
* initialize a dither table that maps a 8 bit color to the device's dither
*
* pel = dither_table[y&7][pel][x&7]
*
**************************************************************************/
static LPVOID init_dither_8_8(HDC hdc, LPBITMAPINFOHEADER lpbi)
{
HBRUSH hbr;
HDC hdcMem;
// HDC hdc;
HBITMAP hbm;
HBITMAP hbmT;
int i;
int nColors;
LPRGBQUAD prgb;
LPVOID lpDitherTable;
struct {
BITMAPINFOHEADER bi;
RGBQUAD rgb[256];
} dib;
lpDitherTable = GlobalAllocPtr(GHND, 256*8*8);
if (lpDitherTable == NULL)
return (LPVOID)-1;
hdc = GetDC(NULL);
hdcMem = CreateCompatibleDC(hdc);
hbm = CreateCompatibleBitmap(hdc, 256*8, 8);
hbmT = SelectObject(hdcMem, hbm);
if ((nColors = (int)lpbi->biClrUsed) == 0)
nColors = 1 << (int)lpbi->biBitCount;
prgb = (LPRGBQUAD)(lpbi+1);
for (i=0; i<nColors; i++)
{
hbr = CreateSolidBrush(RGB(prgb[i].rgbRed,prgb[i].rgbGreen,prgb[i].rgbBlue));
hbr = SelectObject(hdcMem, hbr);
PatBlt(hdcMem, i*8, 0, 8, 8, PATCOPY);
hbr = SelectObject(hdcMem, hbr);
DeleteObject(hbr);
}
#ifdef XDEBUG
for (i=0; i<16; i++)
BitBlt(hdc,0,i*8,16*8,8,hdcMem,i*(16*8),0,SRCCOPY);
#endif
dib.bi.biSize = sizeof(BITMAPINFOHEADER);
dib.bi.biPlanes = 1;
dib.bi.biBitCount = 8;
dib.bi.biWidth = 256*8;
dib.bi.biHeight = 8;
dib.bi.biCompression = BI_RGB;
dib.bi.biSizeImage = 256*8*8;
dib.bi.biXPelsPerMeter = 0;
dib.bi.biYPelsPerMeter = 0;
dib.bi.biClrUsed = 0;
dib.bi.biClrImportant = 0;
GetDIBits(hdc, hbm, 0, 8, lpDitherTable, (LPBITMAPINFO)&dib, DIB_RGB_COLORS);
SelectObject(hdcMem, hbmT);
DeleteDC(hdcMem);
DeleteObject(hbm);
ReleaseDC(NULL, hdc);
return (LPVOID)lpDitherTable;
}
#ifdef WIN32 // Provide some dummy entry points as a temporary measure for NT
void FAR PASCAL convert_16_16
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_16_24
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_16_565
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_24_16
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_24_24
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_24_565
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_32_16
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_32_24
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_32_565
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_8_16
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_8_24
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_8_565
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL convert_8_8
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL copy_8_8
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
void FAR PASCAL dither_8_8
(LPVOID pd, // --> dst.
LONG dd, // offset to start at
LONG nd, // dst_next_scan.
LONG fd, // dst fill bytes
LPVOID ps, // --> source.
LONG ds, // offset to start at
LONG ns, // src_next_scan.
LONG dx, // pixel count.
LONG dy, // scan count.
LPVOID pc) // pixel convert table.
{
return;
}
#endif
Reference in a new issue Copy permalink