| /* |
| * DISPDIB.dll |
| * |
| * Copyright 1998 Ove Kåven (with some help from Marcus Meissner) |
| * |
| */ |
| |
| #include <string.h> |
| #include "windows.h" |
| #include "dispdib.h" |
| #include "compobj.h" |
| #include "interfaces.h" |
| #include "ddraw.h" |
| #include "debug.h" |
| |
| static int dispdib_multi = 0; |
| static IDirectDraw *lpddraw = NULL; |
| static IDirectDrawSurface *lpddsurf; |
| static IDirectDrawPalette *lpddpal; |
| static DDSURFACEDESC sdesc; |
| |
| static WORD DISPDIB_Begin(WORD wFlags) |
| { |
| unsigned Xres,Yres,Depth; |
| |
| switch(wFlags&DISPLAYDIB_MODE) { |
| case DISPLAYDIB_MODE_DEFAULT: |
| /* FIXME: is this supposed to autodetect? */ |
| case DISPLAYDIB_MODE_320x200x8: |
| Xres=320; Yres=200; Depth=8; break; |
| case DISPLAYDIB_MODE_320x240x8: |
| Xres=320; Yres=240; Depth=8; break; |
| default: |
| return DISPLAYDIB_NOTSUPPORTED; |
| } |
| if (!lpddraw) { |
| DirectDrawCreate(NULL,&lpddraw,NULL); |
| if (!lpddraw) { |
| ERR(ddraw,"DirectDraw is not available\n"); |
| return DISPLAYDIB_NOTSUPPORTED; |
| } |
| if (lpddraw->lpvtbl->fnSetDisplayMode(lpddraw,Xres,Yres,Depth)) { |
| ERR(ddraw,"DirectDraw does not support requested display mode\n"); |
| lpddraw->lpvtbl->fnRelease(lpddraw); |
| return DISPLAYDIB_NOTSUPPORTED; |
| } |
| lpddraw->lpvtbl->fnCreatePalette(lpddraw,0,NULL,&lpddpal,NULL); |
| memset(&sdesc,0,sizeof(sdesc)); |
| sdesc.dwSize=sizeof(sdesc); |
| lpddraw->lpvtbl->fnCreateSurface(lpddraw,&sdesc,&lpddsurf,NULL); |
| } |
| return DISPLAYDIB_NOERROR; |
| } |
| |
| static void DISPDIB_End(void) |
| { |
| if (lpddraw) { |
| lpddsurf->lpvtbl->fnRelease(lpddsurf); |
| lpddraw->lpvtbl->fnRelease(lpddraw); |
| lpddraw=NULL; |
| } |
| } |
| |
| static void DISPDIB_Palette(LPBITMAPINFO lpbi) |
| { |
| PALETTEENTRY pal[256]; |
| int c; |
| |
| for (c=0; c<256; c++) { |
| pal[c].peRed =lpbi->bmiColors[c].rgbRed; |
| pal[c].peGreen=lpbi->bmiColors[c].rgbGreen; |
| pal[c].peBlue =lpbi->bmiColors[c].rgbBlue; |
| pal[c].peFlags=0; |
| } |
| lpddpal->lpvtbl->fnSetEntries(lpddpal,0,0,256,pal); |
| lpddsurf->lpvtbl->fnSetPalette(lpddsurf,lpddpal); |
| } |
| |
| static void DISPDIB_Show(LPBITMAPINFOHEADER lpbi,LPSTR lpBits,WORD uFlags) |
| { |
| int Xofs,Yofs,Width=lpbi->biWidth,Height=lpbi->biHeight,Delta; |
| unsigned Pitch=(Width+3)&~3; |
| LPSTR surf; |
| |
| if (lpddsurf->lpvtbl->fnLock(lpddsurf,NULL,&sdesc,0,0)) { |
| ERR(ddraw,"could not lock surface!\n"); |
| return; |
| } |
| /* size in sdesc.dwHeight, sdesc.dwWidth, pitch in sdesc.lPitch, ptr in sdesc.y.lpSurface */ |
| |
| Delta=(Height<0)*2-1; |
| Height*=-Delta; Pitch*=Delta; |
| |
| if (uFlags&DISPLAYDIB_NOCENTER) { |
| Xofs=0; Yofs=0; |
| } else { |
| Xofs=(sdesc.dwWidth-Width)/2; |
| Yofs=(sdesc.dwHeight-Height)/2; |
| } |
| surf=(LPSTR)sdesc.y.lpSurface + (Yofs*sdesc.lPitch)+Xofs; |
| if (Pitch<0) lpBits-=Pitch*(Height-1); |
| for (; Height; Height--,lpBits+=Pitch,surf+=sdesc.lPitch) { |
| memcpy(surf,lpBits,Width); |
| } |
| |
| lpddsurf->lpvtbl->fnUnlock(lpddsurf,sdesc.y.lpSurface); |
| } |
| |
| /********************************************************************* |
| * DisplayDib (DISPDIB.1) |
| * |
| * Disables GDI and takes over the VGA screen to show DIBs in full screen. |
| * |
| * FLAGS |
| * |
| * DISPLAYDIB_NOPALETTE: don't change palette |
| * DISPLAYDIB_NOCENTER: don't center bitmap |
| * DISPLAYDIB_NOWAIT: don't wait (for keypress) before returning |
| * DISPLAYDIB_BEGIN: start of multiple calls (does not restore the screen) |
| * DISPLAYDIB_END: end of multiple calls (restores the screen) |
| * DISPLAYDIB_MODE_DEFAULT: default display mode |
| * DISPLAYDIB_MODE_320x200x8: Standard VGA 320x200 256 colors |
| * DISPLAYDIB_MODE_320x240x8: Tweaked VGA 320x240 256 colors |
| * |
| * RETURNS |
| * |
| * DISPLAYDIB_NOERROR: success |
| * DISPLAYDIB_NOTSUPPORTED: function not supported |
| * DISPLAYDIB_INVALIDDIB: null or invalid DIB header |
| * DISPLAYDIB_INVALIDFORMAT: invalid DIB format |
| * DISPLAYDIB_INVALIDTASK: not called from current task |
| * |
| * BUGS |
| * |
| * Waiting for keypresses is not implemented. |
| */ |
| WORD WINAPI DisplayDib( |
| LPBITMAPINFO lpbi, /* DIB header with resolution and palette */ |
| LPSTR lpBits, /* Bitmap bits to show */ |
| WORD wFlags |
| ) |
| { |
| WORD ret; |
| |
| if (wFlags&DISPLAYDIB_END) { |
| if (dispdib_multi) DISPDIB_End(); |
| dispdib_multi = 0; |
| return DISPLAYDIB_NOERROR; |
| } |
| if (!dispdib_multi) { |
| ret=DISPDIB_Begin(wFlags); |
| if (ret) return ret; |
| } |
| if (wFlags&DISPLAYDIB_BEGIN) dispdib_multi = 1; |
| if (!(wFlags&DISPLAYDIB_NOPALETTE)) { |
| DISPDIB_Palette(lpbi); |
| } |
| /* FIXME: not sure if it's valid to draw images in DISPLAYDIB_BEGIN, so... */ |
| if (lpBits) { |
| DISPDIB_Show(&(lpbi->bmiHeader),lpBits,wFlags); |
| } |
| if (!(wFlags&DISPLAYDIB_NOWAIT)) { |
| FIXME(ddraw,"wait not implemented\n"); |
| } |
| if (!dispdib_multi) DISPDIB_End(); |
| return DISPLAYDIB_NOERROR; |
| } |