307 lines
11 KiB
C
307 lines
11 KiB
C
/**************************************************************************
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DRAWDIBI.H - internal DrawDib include file
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**************************************************************************/
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#ifndef WIN32
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#define VFWAPI FAR PASCAL _loadds
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#define VFWAPIV FAR CDECL _loadds
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#endif
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/**************************************************************************
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includes
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**************************************************************************/
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#include <win32.h> // for Win32 and Win16
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#include <memory.h> // for _fmemcmp
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#include <compman.h>
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#include "drawdib.h"
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#include "dither.h"
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#include "stretch.h"
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#include "lockbm.h"
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#include "setdi.h"
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#include "dciman.h"
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/**************************************************************************
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**************************************************************************/
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#define DDF_OURFLAGS 0xFFFFC001l /* internal flags */
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#define DDF_MEMORYDC 0x00008000l /* drawing to a memory DC */
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#define DDF_WANTKEY 0x00004000l /* wait for a key frame */
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#define DDF_STRETCH 0x00010000l /* we need to stretch */
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#define DDF_DITHER 0x00020000l /* we need to dither */
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#define DDF_BITMAP 0x00040000l /* Display driver isn't very good */
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#define DDF_X 0x00080000l /* */
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#define DDF_IDENTITYPAL 0x00100000l /* 1:1 palette mapping */
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#define DDF_CANBITMAPX 0x00200000l /* can decompress to bitmap */
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#define DDF_CANSCREENX 0x00400000l /* we can decompress/draw to screen */
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#define DDF_Y 0x00800000l /* */
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#define DDF_DIRTY 0x01000000l /* decompress buffer is dirty (not valid) */
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#define DDF_HUGEBITMAP 0x02000000l /* decompressing to a HUGE bitmap */
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#define DDF_XLATSOURCE 0x04000000l /* need to xlat source cord. */
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#define DDF_CLIPPED 0x08000000l /* currently clipped */
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#define DDF_NEWPALETTE 0x10000000l /* palette needs mapped */
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#define DDF_CLIPCHECK 0x20000000l /* we care about clipping */
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#define DDF_CANDRAWX 0x40000000l /* we can draw direct to screen */
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#define DDF_CANSETPAL 0x80000000l /* codec supports ICM_SETPALETTE */
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#define DDF_NAKED 0x00000001l /* dont need GDI to translate */
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#define DDF_USERFLAGS 0x00003FFEl /* the user/called gives these, see .h */
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/* these flags change what DrawDibBegin does */
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#define DDF_BEGINFLAGS (DDF_JUSTDRAWIT | DDF_BUFFER | DDF_ANIMATE | DDF_FULLSCREEN | DDF_HALFTONE)
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/**************************************************************************
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flags, a little more info for people who are not me
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DDF_OURFLAGS these are internal state flags, not passed in by
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the user.
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DDF_STRETCH the current draw requires us to stretch, if GDI
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is stretching this bit is clear.
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DDF_DITHER the current draw requires a format conversion
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note a 16->24 32->24 conversion is also called
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a dither, again if GDI is taking care of it this
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bit is clear.
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DDF_BITMAP the display driver isn't very good and we are converting
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DIB to BMPs before drawing
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DDF_CANBITMAPX we can decompress to bitmaps.
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DDF_BITMAPX we are decompressing directly into a bitmap
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DDF_IDENTITYPAL the palette is a identity palette.
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DDF_CANSCREENX we can decompress to screen with the current draw
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params.
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DDF_SCREENX we are currently decompressing to the screen.
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DDF_DIRTY the decompress buffer is dirty, ie does not
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match what *should* be on the screen.
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DDF_HUGEBITMAP we are decompressing into a huge bitmap, and
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then calling FlatToHuge...
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DDF_XLATSOURCE the source cordinates need remapping after
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decompression, (basicly the decompressor is
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doing a stretch...)
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DDF_UPDATE the buffer is valid but needs drawn to the screen.
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this will get set when DDF_DONTDRAW is passed, and
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we are decompressing to memory
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another way to put it is, if DDF_UPDATE is set
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the screen is out of sync with our internal
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buffer (the internal buffer is more correct)
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DDF_CLIPPED we are clipped
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DDF_NEWPALETTE we need to build new palette map
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DDF_CLIPCHECK please check for clipping changes.
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DDF_W
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DDF_Q
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DDF_USERFLAGS these flags are defined in the API, the user will pass
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these to us.
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DDF_BEGINFLAGS these flags will effect what DrawDibBegin() does
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**************************************************************************/
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/**************************************************************************
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**************************************************************************/
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#ifdef DEBUG
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#define DPF( x ) ddprintf x
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#define DEBUG_RETAIL
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#else
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#define DPF(x)
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#endif
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#ifdef DEBUG_RETAIL
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#define MODNAME "DRAWDIB"
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extern void FAR cdecl ddprintf(LPSTR szFormat, ...);
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#define RPF( x ) ddprintf x
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#else
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#define RPF(X)
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#endif
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/**************************************************************************
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* The biXXXXX elements are grouped at the end to minimise the chance of
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* overwriting non bitmap data (i.e. pointers). IF the code was totally
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* clean this would be irrelevant, however it does increase robustness.
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**************************************************************************/
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typedef struct {
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UINT wSize; /* MANDATORY: this MUST be the first field */
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ULONG ulFlags;
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UINT wError;
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#define DECOMPRESS_NONE 0
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#define DECOMPRESS_BITMAP 1
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#define DECOMPRESS_SCREEN 2
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#define DECOMPRESS_BUFFER 3
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int iDecompress;
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int dxSrc;
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int dySrc;
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int dxDst;
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int dyDst;
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HPALETTE hpal;
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HPALETTE hpalCopy;
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HPALETTE hpalDraw;
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HPALETTE hpalDrawLast; /* hpalDraw for last DrawDibBegin */
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int ClrUsed; /* number of colors used! */
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int iAnimateStart; /* colors we can change */
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int iAnimateLen;
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int iAnimateEnd;
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int iPuntFrame; /* how many frames we blew off */
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/*
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* set to DIB_RGB_COLORS, DIB_PAL_COLORS, or if on Win32 and 1:1 palette
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* DIB_PAL_INDICES (see DrawdibCheckPalette())
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*
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*/
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UINT uiPalUse;
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DITHERPROC DitherProc;
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LPBYTE pbBuffer; /* decompress buffer */
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LPBYTE pbStretch; /* stretched bits. */
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//
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// note we alias the stretch buffer for bitmaps too.
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//
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#define biBitmap biStretch
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#define pbBitmap pbStretch
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SETDI sd; /* for SetBitmap */
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HBITMAP hbmDraw; /* for drawing DIBs on the VGA!!! */
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HDC hdcDraw;
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HDC hdcLast; /* hdc last call to DrawDibBegin */
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LPVOID lpDIBSection; /* pointer to dib section bits */
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LPBYTE pbDither; /* bits we will dither to */
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LPVOID lpDitherTable; /* for dithering */
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HIC hic; /* decompressor */
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#ifdef DEBUG_RETAIL
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DRAWDIBTIME ddtime;
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#endif
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LPBITMAPINFOHEADER lpbi; /* source dib format */
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RGBQUAD (FAR *lpargbqIn)[256];/* source dib colors */
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BITMAPINFOHEADER biBuffer; /* decompress format */
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RGBQUAD argbq[256]; /* drawdib colors */
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BITMAPINFOHEADER biStretch; /* stretched DIB */
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DWORD smag[3]; /* room for masks */
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BITMAPINFOHEADER biDraw; /* DIB we will draw */
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WORD aw[512]; /* either index's or RGBQs */
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BYTE ab[256]; /* pallete mapping (!!!needed?) */
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#ifndef _WIN32
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HTASK htask;
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#endif
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} DRAWDIB_STRUCT, *PDD;
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/**************************************************************************
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**************************************************************************/
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extern DRAWDIB_STRUCT gdd;
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extern UINT gwScreenBitDepth;
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extern BOOL gf286;
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/**************************************************************************
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**************************************************************************/
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// flags for <wFlags> parameter of DisplayDib()
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#define DISPLAYDIB_NOPALETTE 0x0010 // don't set palette
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#define DISPLAYDIB_NOCENTER 0x0020 // don't center image
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#define DISPLAYDIB_NOWAIT 0x0040 // don't wait before returning
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#define DISPLAYDIB_NOIMAGE 0x0080 // don't draw image
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#define DISPLAYDIB_ZOOM2 0x0100 // stretch by 2
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#define DISPLAYDIB_DONTLOCKTASK 0x0200 // don't lock current task
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#define DISPLAYDIB_TEST 0x0400 // testing the command
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#define DISPLAYDIB_BEGIN 0x8000 // start of multiple calls
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#define DISPLAYDIB_END 0x4000 // end of multiple calls
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#define DISPLAYDIB_MODE_DEFAULT 0x0000
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UINT (FAR PASCAL *DisplayDib)(LPBITMAPINFOHEADER lpbi, LPSTR lpBits, UINT wFlags);
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UINT (FAR PASCAL *DisplayDibEx)(LPBITMAPINFOHEADER lpbi, int x, int y, LPSTR lpBits, UINT wFlags);
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/**************************************************************************
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**************************************************************************/
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#ifdef DEBUG_RETAIL
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extern DWORD FAR PASCAL timeGetTime(void);
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#define TIMEINC() pdd->ddtime.timeCount++
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#define TIMESTART(time) pdd->ddtime.time -= timeGetTime()
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#define TIMEEND(time) pdd->ddtime.time += timeGetTime()
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#else
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#define TIMEINC()
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#define TIMESTART(time)
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#define TIMEEND(time)
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#endif
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/**************************************************************************
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**************************************************************************/
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#define WIDTHBYTES(i) ((unsigned)((i+31)&(~31))/8) /* ULONG aligned ! */
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#define DIBWIDTHBYTES(bi) (UINT)WIDTHBYTES((int)(bi).biWidth * (int)(bi).biBitCount)
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#define DIBSIZEIMAGE(bi) ((DWORD)(UINT)(bi).biHeight * (DWORD)(UINT)DIBWIDTHBYTES(bi))
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#define PUSHBI(bi) (int)(bi).biWidth, (int)(bi).biHeight, (int)(bi).biBitCount
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/**************************************************************************
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**************************************************************************/
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//#define MEASURE_PERFORMANCE
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#if defined(MEASURE_PERFORMANCE) && defined(WIN32) && defined(DEBUG)
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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static LARGE_INTEGER PC1; /* current counter value */
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static LARGE_INTEGER PC2; /* current counter value */
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static LARGE_INTEGER PC3; /* current counter value */
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#define abs(x) ((x) < 0 ? -(x) : (x))
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static VOID StartCounting(VOID)
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{
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QueryPerformanceCounter(&PC1);
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return;
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}
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static VOID EndCounting(LPSTR szId)
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{
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QueryPerformanceCounter(&PC2);
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PC3 = I64Sub(PC2,PC1);
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DPF(("%s: %d ticks", szId, PC3.LowPart));
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return;
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}
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#else
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#define StartCounting()
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#define EndCounting(x)
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#endif
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