/************************************************************************** DRAWDIBI.H - internal DrawDib include file **************************************************************************/ #ifndef WIN32 #define VFWAPI FAR PASCAL _loadds #define VFWAPIV FAR CDECL _loadds #endif /************************************************************************** includes **************************************************************************/ #include // for Win32 and Win16 #include // for _fmemcmp #include #include "drawdib.h" #include "dither.h" #include "stretch.h" #include "lockbm.h" #include "setdi.h" #include "dciman.h" /************************************************************************** **************************************************************************/ #define DDF_OURFLAGS 0xFFFFC001l /* internal flags */ #define DDF_MEMORYDC 0x00008000l /* drawing to a memory DC */ #define DDF_WANTKEY 0x00004000l /* wait for a key frame */ #define DDF_STRETCH 0x00010000l /* we need to stretch */ #define DDF_DITHER 0x00020000l /* we need to dither */ #define DDF_BITMAP 0x00040000l /* Display driver isn't very good */ #define DDF_X 0x00080000l /* */ #define DDF_IDENTITYPAL 0x00100000l /* 1:1 palette mapping */ #define DDF_CANBITMAPX 0x00200000l /* can decompress to bitmap */ #define DDF_CANSCREENX 0x00400000l /* we can decompress/draw to screen */ #define DDF_Y 0x00800000l /* */ #define DDF_DIRTY 0x01000000l /* decompress buffer is dirty (not valid) */ #define DDF_HUGEBITMAP 0x02000000l /* decompressing to a HUGE bitmap */ #define DDF_XLATSOURCE 0x04000000l /* need to xlat source cord. */ #define DDF_CLIPPED 0x08000000l /* currently clipped */ #define DDF_NEWPALETTE 0x10000000l /* palette needs mapped */ #define DDF_CLIPCHECK 0x20000000l /* we care about clipping */ #define DDF_CANDRAWX 0x40000000l /* we can draw direct to screen */ #define DDF_CANSETPAL 0x80000000l /* codec supports ICM_SETPALETTE */ #define DDF_NAKED 0x00000001l /* dont need GDI to translate */ #define DDF_USERFLAGS 0x00003FFEl /* the user/called gives these, see .h */ /* these flags change what DrawDibBegin does */ #define DDF_BEGINFLAGS (DDF_JUSTDRAWIT | DDF_BUFFER | DDF_ANIMATE | DDF_FULLSCREEN | DDF_HALFTONE) /************************************************************************** flags, a little more info for people who are not me DDF_OURFLAGS these are internal state flags, not passed in by the user. DDF_STRETCH the current draw requires us to stretch, if GDI is stretching this bit is clear. DDF_DITHER the current draw requires a format conversion note a 16->24 32->24 conversion is also called a dither, again if GDI is taking care of it this bit is clear. DDF_BITMAP the display driver isn't very good and we are converting DIB to BMPs before drawing DDF_CANBITMAPX we can decompress to bitmaps. DDF_BITMAPX we are decompressing directly into a bitmap DDF_IDENTITYPAL the palette is a identity palette. DDF_CANSCREENX we can decompress to screen with the current draw params. DDF_SCREENX we are currently decompressing to the screen. DDF_DIRTY the decompress buffer is dirty, ie does not match what *should* be on the screen. DDF_HUGEBITMAP we are decompressing into a huge bitmap, and then calling FlatToHuge... DDF_XLATSOURCE the source cordinates need remapping after decompression, (basicly the decompressor is doing a stretch...) DDF_UPDATE the buffer is valid but needs drawn to the screen. this will get set when DDF_DONTDRAW is passed, and we are decompressing to memory another way to put it is, if DDF_UPDATE is set the screen is out of sync with our internal buffer (the internal buffer is more correct) DDF_CLIPPED we are clipped DDF_NEWPALETTE we need to build new palette map DDF_CLIPCHECK please check for clipping changes. DDF_W DDF_Q DDF_USERFLAGS these flags are defined in the API, the user will pass these to us. DDF_BEGINFLAGS these flags will effect what DrawDibBegin() does **************************************************************************/ /************************************************************************** **************************************************************************/ #ifdef DEBUG #define DPF( x ) ddprintf x #define DEBUG_RETAIL #else #define DPF(x) #endif #ifdef DEBUG_RETAIL #define MODNAME "DRAWDIB" extern void FAR cdecl ddprintf(LPSTR szFormat, ...); #define RPF( x ) ddprintf x #else #define RPF(X) #endif /************************************************************************** * The biXXXXX elements are grouped at the end to minimise the chance of * overwriting non bitmap data (i.e. pointers). IF the code was totally * clean this would be irrelevant, however it does increase robustness. **************************************************************************/ typedef struct { UINT wSize; /* MANDATORY: this MUST be the first field */ ULONG ulFlags; UINT wError; #define DECOMPRESS_NONE 0 #define DECOMPRESS_BITMAP 1 #define DECOMPRESS_SCREEN 2 #define DECOMPRESS_BUFFER 3 int iDecompress; int dxSrc; int dySrc; int dxDst; int dyDst; HPALETTE hpal; HPALETTE hpalCopy; HPALETTE hpalDraw; HPALETTE hpalDrawLast; /* hpalDraw for last DrawDibBegin */ int ClrUsed; /* number of colors used! */ int iAnimateStart; /* colors we can change */ int iAnimateLen; int iAnimateEnd; int iPuntFrame; /* how many frames we blew off */ /* * set to DIB_RGB_COLORS, DIB_PAL_COLORS, or if on Win32 and 1:1 palette * DIB_PAL_INDICES (see DrawdibCheckPalette()) * */ UINT uiPalUse; DITHERPROC DitherProc; LPBYTE pbBuffer; /* decompress buffer */ LPBYTE pbStretch; /* stretched bits. */ // // note we alias the stretch buffer for bitmaps too. // #define biBitmap biStretch #define pbBitmap pbStretch SETDI sd; /* for SetBitmap */ HBITMAP hbmDraw; /* for drawing DIBs on the VGA!!! */ HDC hdcDraw; HDC hdcLast; /* hdc last call to DrawDibBegin */ LPVOID lpDIBSection; /* pointer to dib section bits */ LPBYTE pbDither; /* bits we will dither to */ LPVOID lpDitherTable; /* for dithering */ HIC hic; /* decompressor */ #ifdef DEBUG_RETAIL DRAWDIBTIME ddtime; #endif LPBITMAPINFOHEADER lpbi; /* source dib format */ RGBQUAD (FAR *lpargbqIn)[256];/* source dib colors */ BITMAPINFOHEADER biBuffer; /* decompress format */ RGBQUAD argbq[256]; /* drawdib colors */ BITMAPINFOHEADER biStretch; /* stretched DIB */ DWORD smag[3]; /* room for masks */ BITMAPINFOHEADER biDraw; /* DIB we will draw */ WORD aw[512]; /* either index's or RGBQs */ BYTE ab[256]; /* pallete mapping (!!!needed?) */ #ifndef _WIN32 HTASK htask; #endif } DRAWDIB_STRUCT, *PDD; /************************************************************************** **************************************************************************/ extern DRAWDIB_STRUCT gdd; extern UINT gwScreenBitDepth; extern BOOL gf286; /************************************************************************** **************************************************************************/ // flags for parameter of DisplayDib() #define DISPLAYDIB_NOPALETTE 0x0010 // don't set palette #define DISPLAYDIB_NOCENTER 0x0020 // don't center image #define DISPLAYDIB_NOWAIT 0x0040 // don't wait before returning #define DISPLAYDIB_NOIMAGE 0x0080 // don't draw image #define DISPLAYDIB_ZOOM2 0x0100 // stretch by 2 #define DISPLAYDIB_DONTLOCKTASK 0x0200 // don't lock current task #define DISPLAYDIB_TEST 0x0400 // testing the command #define DISPLAYDIB_BEGIN 0x8000 // start of multiple calls #define DISPLAYDIB_END 0x4000 // end of multiple calls #define DISPLAYDIB_MODE_DEFAULT 0x0000 UINT (FAR PASCAL *DisplayDib)(LPBITMAPINFOHEADER lpbi, LPSTR lpBits, UINT wFlags); UINT (FAR PASCAL *DisplayDibEx)(LPBITMAPINFOHEADER lpbi, int x, int y, LPSTR lpBits, UINT wFlags); /************************************************************************** **************************************************************************/ #ifdef DEBUG_RETAIL extern DWORD FAR PASCAL timeGetTime(void); #define TIMEINC() pdd->ddtime.timeCount++ #define TIMESTART(time) pdd->ddtime.time -= timeGetTime() #define TIMEEND(time) pdd->ddtime.time += timeGetTime() #else #define TIMEINC() #define TIMESTART(time) #define TIMEEND(time) #endif /************************************************************************** **************************************************************************/ #define WIDTHBYTES(i) ((unsigned)((i+31)&(~31))/8) /* ULONG aligned ! */ #define DIBWIDTHBYTES(bi) (UINT)WIDTHBYTES((int)(bi).biWidth * (int)(bi).biBitCount) #define DIBSIZEIMAGE(bi) ((DWORD)(UINT)(bi).biHeight * (DWORD)(UINT)DIBWIDTHBYTES(bi)) #define PUSHBI(bi) (int)(bi).biWidth, (int)(bi).biHeight, (int)(bi).biBitCount /************************************************************************** **************************************************************************/ //#define MEASURE_PERFORMANCE #if defined(MEASURE_PERFORMANCE) && defined(WIN32) && defined(DEBUG) #include #include #include static LARGE_INTEGER PC1; /* current counter value */ static LARGE_INTEGER PC2; /* current counter value */ static LARGE_INTEGER PC3; /* current counter value */ #define abs(x) ((x) < 0 ? -(x) : (x)) static VOID StartCounting(VOID) { QueryPerformanceCounter(&PC1); return; } static VOID EndCounting(LPSTR szId) { QueryPerformanceCounter(&PC2); PC3 = I64Sub(PC2,PC1); DPF(("%s: %d ticks", szId, PC3.LowPart)); return; } #else #define StartCounting() #define EndCounting(x) #endif