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/**************************************************************************
DRAWDIBI.H - internal DrawDib include file
**************************************************************************/
#ifndef WIN32
#define VFWAPI FAR PASCAL _loadds
#define VFWAPIV FAR CDECL _loadds
#endif
/**************************************************************************
includes**************************************************************************/
#include <win32.h> // for Win32 and Win16
#include <memory.h> // for _fmemcmp
#include <compman.h>
#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 <wFlags> 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 <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
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
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