path: root/fb/fb.h

/*
 *
 * Copyright © 1998 Keith Packard
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _FB_H_
#define _FB_H_

#include <X11/X.h>
#include <pixman.h>

#include "scrnintstr.h"
#include "pixmap.h"
#include "pixmapstr.h"
#include "region.h"
#include "gcstruct.h"
#include "colormap.h"
#include "miscstruct.h"
#include "servermd.h"
#include "windowstr.h"
#include "privates.h"
#include "mi.h"
#include "migc.h"
#include "picturestr.h"

#ifdef FB_ACCESS_WRAPPER

#include "wfbrename.h"
#define FBPREFIX(x) wfb##x
#define WRITE(ptr, val) ((*wfbWriteMemory)((ptr), (val), sizeof(*(ptr))))
#define READ(ptr) ((*wfbReadMemory)((ptr), sizeof(*(ptr))))

#define MEMCPY_WRAPPED(dst, src, size) do {                       \
    size_t _i;                                                    \
    CARD8 *_dst = (CARD8*)(dst), *_src = (CARD8*)(src);           \
    for(_i = 0; _i < size; _i++) {                                \
        WRITE(_dst +_i, READ(_src + _i));                         \
    }                                                             \
} while(0)

#define MEMSET_WRAPPED(dst, val, size) do {                       \
    size_t _i;                                                    \
    CARD8 *_dst = (CARD8*)(dst);                                  \
    for(_i = 0; _i < size; _i++) {                                \
        WRITE(_dst +_i, (val));                                   \
    }                                                             \
} while(0)

#else

#define FBPREFIX(x) fb##x
#define WRITE(ptr, val) (*(ptr) = (val))
#define READ(ptr) (*(ptr))
#define MEMCPY_WRAPPED(dst, src, size) memcpy((dst), (src), (size))
#define MEMSET_WRAPPED(dst, val, size) memset((dst), (val), (size))

#endif

/*
 * This single define controls the basic size of data manipulated
 * by this software; it must be log2(sizeof (FbBits) * 8)
 */

#ifndef FB_SHIFT
#define FB_SHIFT    LOG2_BITMAP_PAD
#endif

#define FB_UNIT	    (1 << FB_SHIFT)
#define FB_MASK	    (FB_UNIT - 1)
#define FB_ALLONES  ((FbBits) -1)
#if GLYPHPADBYTES != 4
#error "GLYPHPADBYTES must be 4"
#endif
/* for driver compat - intel UXA needs the second one at least */
#define FB_24BIT
#define FB_24_32BIT
#define FB_STIP_SHIFT	LOG2_BITMAP_PAD
#define FB_STIP_UNIT	(1 << FB_STIP_SHIFT)
#define FB_STIP_MASK	(FB_STIP_UNIT - 1)
#define FB_STIP_ALLONES	((FbStip) -1)
#define FB_STIP_ODDSTRIDE(s)	(((s) & (FB_MASK >> FB_STIP_SHIFT)) != 0)
#define FB_STIP_ODDPTR(p)	((((long) (p)) & (FB_MASK >> 3)) != 0)
#define FbStipStrideToBitsStride(s) (((s) >> (FB_SHIFT - FB_STIP_SHIFT)))
#define FbBitsStrideToStipStride(s) (((s) << (FB_SHIFT - FB_STIP_SHIFT)))
#define FbFullMask(n)   ((n) == FB_UNIT ? FB_ALLONES : ((((FbBits) 1) << n) - 1))

#if FB_SHIFT == 5
typedef CARD32 FbBits;
#else
#error "Unsupported FB_SHIFT"
#endif

#if LOG2_BITMAP_PAD == FB_SHIFT
typedef FbBits FbStip;
#endif

typedef int FbStride;

#ifdef FB_DEBUG
extern _X_EXPORT void fbValidateDrawable(DrawablePtr d);
extern _X_EXPORT void fbInitializeDrawable(DrawablePtr d);
extern _X_EXPORT void fbSetBits(FbStip * bits, int stride, FbStip data);

#define FB_HEAD_BITS   (FbStip) (0xbaadf00d)
#define FB_TAIL_BITS   (FbStip) (0xbaddf0ad)
#else
#define fbValidateDrawable(d)
#define fdInitializeDrawable(d)
#endif

#include "fbrop.h"

#if BITMAP_BIT_ORDER == LSBFirst
#define FbScrLeft(x,n)	((x) >> (n))
#define FbScrRight(x,n)	((x) << (n))
/* #define FbLeftBits(x,n)	((x) & ((((FbBits) 1) << (n)) - 1)) */
#define FbLeftStipBits(x,n) ((x) & ((((FbStip) 1) << (n)) - 1))
#define FbStipMoveLsb(x,s,n)	(FbStipRight (x,(s)-(n)))
#define FbPatternOffsetBits	0
#else
#define FbScrLeft(x,n)	((x) << (n))
#define FbScrRight(x,n)	((x) >> (n))
/* #define FbLeftBits(x,n)	((x) >> (FB_UNIT - (n))) */
#define FbLeftStipBits(x,n) ((x) >> (FB_STIP_UNIT - (n)))
#define FbStipMoveLsb(x,s,n)	(x)
#define FbPatternOffsetBits	(sizeof (FbBits) - 1)
#endif

#include "micoord.h"

#define FbStipLeft(x,n)	FbScrLeft(x,n)
#define FbStipRight(x,n) FbScrRight(x,n)

#define FbRotLeft(x,n)	FbScrLeft(x,n) | (n ? FbScrRight(x,FB_UNIT-n) : 0)
#define FbRotRight(x,n)	FbScrRight(x,n) | (n ? FbScrLeft(x,FB_UNIT-n) : 0)

#define FbRotStipLeft(x,n)  FbStipLeft(x,n) | (n ? FbStipRight(x,FB_STIP_UNIT-n) : 0)
#define FbRotStipRight(x,n)  FbStipRight(x,n) | (n ? FbStipLeft(x,FB_STIP_UNIT-n) : 0)

#define FbLeftMask(x)	    ( ((x) & FB_MASK) ? \
			     FbScrRight(FB_ALLONES,(x) & FB_MASK) : 0)
#define FbRightMask(x)	    ( ((FB_UNIT - (x)) & FB_MASK) ? \
			     FbScrLeft(FB_ALLONES,(FB_UNIT - (x)) & FB_MASK) : 0)

#define FbLeftStipMask(x)   ( ((x) & FB_STIP_MASK) ? \
			     FbStipRight(FB_STIP_ALLONES,(x) & FB_STIP_MASK) : 0)
#define FbRightStipMask(x)  ( ((FB_STIP_UNIT - (x)) & FB_STIP_MASK) ? \
			     FbScrLeft(FB_STIP_ALLONES,(FB_STIP_UNIT - (x)) & FB_STIP_MASK) : 0)

#define FbBitsMask(x,w)	(FbScrRight(FB_ALLONES,(x) & FB_MASK) & \
			 FbScrLeft(FB_ALLONES,(FB_UNIT - ((x) + (w))) & FB_MASK))

#define FbStipMask(x,w)	(FbStipRight(FB_STIP_ALLONES,(x) & FB_STIP_MASK) & \
			 FbStipLeft(FB_STIP_ALLONES,(FB_STIP_UNIT - ((x)+(w))) & FB_STIP_MASK))

#define FbMaskBits(x,w,l,n,r) { \
    n = (w); \
    r = FbRightMask((x)+n); \
    l = FbLeftMask(x); \
    if (l) { \
	n -= FB_UNIT - ((x) & FB_MASK); \
	if (n < 0) { \
	    n = 0; \
	    l &= r; \
	    r = 0; \
	} \
    } \
    n >>= FB_SHIFT; \
}

#define FbByteMaskInvalid   0x10

#define FbPatternOffset(o,t)  ((o) ^ (FbPatternOffsetBits & ~(sizeof (t) - 1)))

#define FbPtrOffset(p,o,t)		((t *) ((CARD8 *) (p) + (o)))
#define FbSelectPatternPart(xor,o,t)	((xor) >> (FbPatternOffset (o,t) << 3))
#define FbStorePart(dst,off,t,xor)	(WRITE(FbPtrOffset(dst,off,t), \
					 FbSelectPart(xor,off,t)))
#ifndef FbSelectPart
#define FbSelectPart(x,o,t) FbSelectPatternPart(x,o,t)
#endif

#define FbMaskBitsBytes(x,w,copy,l,lb,n,r,rb) { \
    n = (w); \
    lb = 0; \
    rb = 0; \
    r = FbRightMask((x)+n); \
    if (r) { \
	/* compute right byte length */ \
	if ((copy) && (((x) + n) & 7) == 0) { \
	    rb = (((x) + n) & FB_MASK) >> 3; \
	} else { \
	    rb = FbByteMaskInvalid; \
	} \
    } \
    l = FbLeftMask(x); \
    if (l) { \
	/* compute left byte length */ \
	if ((copy) && ((x) & 7) == 0) { \
	    lb = ((x) & FB_MASK) >> 3; \
	} else { \
	    lb = FbByteMaskInvalid; \
	} \
	/* subtract out the portion painted by leftMask */ \
	n -= FB_UNIT - ((x) & FB_MASK); \
	if (n < 0) { \
	    if (lb != FbByteMaskInvalid) { \
		if (rb == FbByteMaskInvalid) { \
		    lb = FbByteMaskInvalid; \
		} else if (rb) { \
		    lb |= (rb - lb) << (FB_SHIFT - 3); \
		    rb = 0; \
		} \
	    } \
	    n = 0; \
	    l &= r; \
	    r = 0; \
	}\
    } \
    n >>= FB_SHIFT; \
}

#define FbDoLeftMaskByteRRop(dst,lb,l,and,xor) { \
    switch (lb) { \
    case (sizeof (FbBits) - 3) | (1 << (FB_SHIFT - 3)): \
	FbStorePart(dst,sizeof (FbBits) - 3,CARD8,xor); \
	break; \
    case (sizeof (FbBits) - 3) | (2 << (FB_SHIFT - 3)): \
	FbStorePart(dst,sizeof (FbBits) - 3,CARD8,xor); \
	FbStorePart(dst,sizeof (FbBits) - 2,CARD8,xor); \
	break; \
    case (sizeof (FbBits) - 2) | (1 << (FB_SHIFT - 3)): \
	FbStorePart(dst,sizeof (FbBits) - 2,CARD8,xor); \
	break; \
    case sizeof (FbBits) - 3: \
	FbStorePart(dst,sizeof (FbBits) - 3,CARD8,xor); \
    case sizeof (FbBits) - 2: \
	FbStorePart(dst,sizeof (FbBits) - 2,CARD16,xor); \
	break; \
    case sizeof (FbBits) - 1: \
	FbStorePart(dst,sizeof (FbBits) - 1,CARD8,xor); \
	break; \
    default: \
	WRITE(dst, FbDoMaskRRop(READ(dst), and, xor, l)); \
	break; \
    } \
}

#define FbDoRightMaskByteRRop(dst,rb,r,and,xor) { \
    switch (rb) { \
    case 1: \
	FbStorePart(dst,0,CARD8,xor); \
	break; \
    case 2: \
	FbStorePart(dst,0,CARD16,xor); \
	break; \
    case 3: \
	FbStorePart(dst,0,CARD16,xor); \
	FbStorePart(dst,2,CARD8,xor); \
	break; \
    default: \
	WRITE(dst, FbDoMaskRRop (READ(dst), and, xor, r)); \
    } \
}

#define FbMaskStip(x,w,l,n,r) { \
    n = (w); \
    r = FbRightStipMask((x)+n); \
    l = FbLeftStipMask(x); \
    if (l) { \
	n -= FB_STIP_UNIT - ((x) & FB_STIP_MASK); \
	if (n < 0) { \
	    n = 0; \
	    l &= r; \
	    r = 0; \
	} \
    } \
    n >>= FB_STIP_SHIFT; \
}

/*
 * These macros are used to transparently stipple
 * in copy mode; the expected usage is with 'n' constant
 * so all of the conditional parts collapse into a minimal
 * sequence of partial word writes
 *
 * 'n' is the bytemask of which bytes to store, 'a' is the address
 * of the FbBits base unit, 'o' is the offset within that unit
 *
 * The term "lane" comes from the hardware term "byte-lane" which
 */

#define FbLaneCase1(n,a,o)						\
    if ((n) == 0x01) {							\
	WRITE((CARD8 *) ((a)+FbPatternOffset(o,CARD8)), fgxor);		\
    }

#define FbLaneCase2(n,a,o)						\
    if ((n) == 0x03) {							\
	WRITE((CARD16 *) ((a)+FbPatternOffset(o,CARD16)), fgxor);	\
    } else {								\
	FbLaneCase1((n)&1,a,o)						\
	FbLaneCase1((n)>>1,a,(o)+1)					\
    }

#define FbLaneCase4(n,a,o)						\
    if ((n) == 0x0f) {							\
	WRITE((CARD32 *) ((a)+FbPatternOffset(o,CARD32)), fgxor);	\
    } else {								\
	FbLaneCase2((n)&3,a,o)						\
	FbLaneCase2((n)>>2,a,(o)+2)					\
    }

#define FbLaneCase(n,a)   FbLaneCase4(n,(CARD8 *) (a),0)

/* Rotate a filled pixel value to the specified alignement */
#define FbRot24(p,b)	    (FbScrRight(p,b) | FbScrLeft(p,24-(b)))
#define FbRot24Stip(p,b)    (FbStipRight(p,b) | FbStipLeft(p,24-(b)))

/* step a filled pixel value to the next/previous FB_UNIT alignment */
#define FbNext24Pix(p)	(FbRot24(p,(24-FB_UNIT%24)))
#define FbPrev24Pix(p)	(FbRot24(p,FB_UNIT%24))
#define FbNext24Stip(p)	(FbRot24(p,(24-FB_STIP_UNIT%24)))
#define FbPrev24Stip(p)	(FbRot24(p,FB_STIP_UNIT%24))

/* step a rotation value to the next/previous rotation value */
#define FbNext24Rot(r)        ((r) == 0 ? 16 : (r) - 8)
#define FbPrev24Rot(r)        ((r) == 16 ? 0 : (r) + 8)

#if IMAGE_BYTE_ORDER == MSBFirst
#define FbFirst24Rot(x)		(((x) + 16) % 24)
#else
#define FbFirst24Rot(x)		((x) % 24)
#endif

#define FbNext24RotStip(r)        ((r) == 0 ? 16 : (r) - 8)
#define FbPrev24RotStip(r)        ((r) == 16 ? 0 : (r) + 8)

/* Whether 24-bit specific code is needed for this filled pixel value */
#define FbCheck24Pix(p)	((p) == FbNext24Pix(p))

/* Macros for dealing with dashing */

#define FbDashDeclare	\
    unsigned char	*__dash, *__firstDash, *__lastDash

#define FbDashInit(pGC,pPriv,dashOffset,dashlen,even) {	    \
    (even) = TRUE;					    \
    __firstDash = (pGC)->dash;				    \
    __lastDash = __firstDash + (pGC)->numInDashList;	    \
    (dashOffset) %= (pPriv)->dashLength;		    \
							    \
    __dash = __firstDash;				    \
    while ((dashOffset) >= ((dashlen) = *__dash))	    \
    {							    \
	(dashOffset) -= (dashlen);			    \
	(even) = 1-(even);				    \
	if (++__dash == __lastDash)			    \
	    __dash = __firstDash;			    \
    }							    \
    (dashlen) -= (dashOffset);				    \
}

#define FbDashNext(dashlen) {				    \
    if (++__dash == __lastDash)				    \
	__dash = __firstDash;				    \
    (dashlen) = *__dash;				    \
}

/* as numInDashList is always even, this case can skip a test */

#define FbDashNextEven(dashlen) {			    \
    (dashlen) = *++__dash;				    \
}

#define FbDashNextOdd(dashlen)	FbDashNext(dashlen)

#define FbDashStep(dashlen,even) {			    \
    if (!--(dashlen)) {					    \
	FbDashNext(dashlen);				    \
	(even) = 1-(even);				    \
    }							    \
}

extern _X_EXPORT const GCOps fbGCOps;
extern _X_EXPORT const GCFuncs fbGCFuncs;

/* Framebuffer access wrapper */
typedef FbBits(*ReadMemoryProcPtr) (const void *src, int size);
typedef void (*WriteMemoryProcPtr) (void *dst, FbBits value, int size);
typedef void (*SetupWrapProcPtr) (ReadMemoryProcPtr * pRead,
                                  WriteMemoryProcPtr * pWrite,
                                  DrawablePtr pDraw);
typedef void (*FinishWrapProcPtr) (DrawablePtr pDraw);

#ifdef FB_ACCESS_WRAPPER

#define fbPrepareAccess(pDraw) \
	fbGetScreenPrivate((pDraw)->pScreen)->setupWrap( \
		&wfbReadMemory, \
		&wfbWriteMemory, \
		(pDraw))
#define fbFinishAccess(pDraw) \
	fbGetScreenPrivate((pDraw)->pScreen)->finishWrap(pDraw)

#else

#define fbPrepareAccess(pPix)
#define fbFinishAccess(pDraw)

#endif

extern _X_EXPORT DevPrivateKey
fbGetScreenPrivateKey(void);

/* private field of a screen */
typedef struct {
    unsigned char win32bpp;     /* window bpp for 32-bpp images */
    unsigned char pix32bpp;     /* pixmap bpp for 32-bpp images */
#ifdef FB_ACCESS_WRAPPER
    SetupWrapProcPtr setupWrap; /* driver hook to set pixmap access wrapping */
    FinishWrapProcPtr finishWrap;       /* driver hook to clean up pixmap access wrapping */
#endif
    DevPrivateKeyRec    gcPrivateKeyRec;
    DevPrivateKeyRec    winPrivateKeyRec;
} FbScreenPrivRec, *FbScreenPrivPtr;

#define fbGetScreenPrivate(pScreen) ((FbScreenPrivPtr) \
				     dixLookupPrivate(&(pScreen)->devPrivates, fbGetScreenPrivateKey()))

/* private field of GC */
typedef struct {
    FbBits and, xor;            /* reduced rop values */
    FbBits bgand, bgxor;        /* for stipples */
    FbBits fg, bg, pm;          /* expanded and filled */
    unsigned int dashLength;    /* total of all dash elements */
    unsigned char bpp;          /* current drawable bpp */
} FbGCPrivRec, *FbGCPrivPtr;

#define fbGetGCPrivateKey(pGC)  (&fbGetScreenPrivate((pGC)->pScreen)->gcPrivateKeyRec)

#define fbGetGCPrivate(pGC)	((FbGCPrivPtr)\
				 dixLookupPrivate(&(pGC)->devPrivates, fbGetGCPrivateKey(pGC)))

#define fbGetCompositeClip(pGC) ((pGC)->pCompositeClip)
#define fbGetExpose(pGC)	((pGC)->fExpose)
#define fbGetFreeCompClip(pGC)	((pGC)->freeCompClip)
#define fbGetRotatedPixmap(pGC)	((pGC)->pRotatedPixmap)

#define fbGetScreenPixmap(s)	((PixmapPtr) (s)->devPrivate)

#define fbGetWinPrivateKey(pWin)        (&fbGetScreenPrivate(((DrawablePtr) (pWin))->pScreen)->winPrivateKeyRec)

#define fbGetWindowPixmap(pWin)	((PixmapPtr)\
				 dixLookupPrivate(&((WindowPtr)(pWin))->devPrivates, fbGetWinPrivateKey(pWin)))

#ifdef ROOTLESS
#define __fbPixDrawableX(pPix)	((pPix)->drawable.x)
#define __fbPixDrawableY(pPix)	((pPix)->drawable.y)
#else
#define __fbPixDrawableX(pPix)	0
#define __fbPixDrawableY(pPix)	0
#endif

#ifdef COMPOSITE
#define __fbPixOffXWin(pPix)	(__fbPixDrawableX(pPix) - (pPix)->screen_x)
#define __fbPixOffYWin(pPix)	(__fbPixDrawableY(pPix) - (pPix)->screen_y)
#else
#define __fbPixOffXWin(pPix)	(__fbPixDrawableX(pPix))
#define __fbPixOffYWin(pPix)	(__fbPixDrawableY(pPix))
#endif
#define __fbPixOffXPix(pPix)	(__fbPixDrawableX(pPix))
#define __fbPixOffYPix(pPix)	(__fbPixDrawableY(pPix))

#define fbGetDrawablePixmap(pDrawable, pixmap, xoff, yoff) {			\
    if ((pDrawable)->type != DRAWABLE_PIXMAP) { 				\
	(pixmap) = fbGetWindowPixmap(pDrawable);				\
	(xoff) = __fbPixOffXWin(pixmap); 					\
	(yoff) = __fbPixOffYWin(pixmap); 					\
    } else { 									\
	(pixmap) = (PixmapPtr) (pDrawable);					\
	(xoff) = __fbPixOffXPix(pixmap); 					\
	(yoff) = __fbPixOffYPix(pixmap); 					\
    } 										\
    fbPrepareAccess(pDrawable); 						\
}

#define fbGetPixmapBitsData(pixmap, pointer, stride, bpp) {			\
    (pointer) = (FbBits *) (pixmap)->devPrivate.ptr; 			       	\
    (stride) = ((int) (pixmap)->devKind) / sizeof (FbBits); (void)(stride);	\
    (bpp) = (pixmap)->drawable.bitsPerPixel;  (void)(bpp); 			\
}

#define fbGetPixmapStipData(pixmap, pointer, stride, bpp) {			\
    (pointer) = (FbStip *) (pixmap)->devPrivate.ptr; 			       	\
    (stride) = ((int) (pixmap)->devKind) / sizeof (FbStip); (void)(stride);	\
    (bpp) = (pixmap)->drawable.bitsPerPixel;  (void)(bpp); 			\
}

#define fbGetDrawable(pDrawable, pointer, stride, bpp, xoff, yoff) { 		\
    PixmapPtr   _pPix; 								\
    fbGetDrawablePixmap(pDrawable, _pPix, xoff, yoff); 				\
    fbGetPixmapBitsData(_pPix, pointer, stride, bpp);				\
}

#define fbGetStipDrawable(pDrawable, pointer, stride, bpp, xoff, yoff) { 	\
    PixmapPtr   _pPix; 								\
    fbGetDrawablePixmap(pDrawable, _pPix, xoff, yoff);				\
    fbGetPixmapStipData(_pPix, pointer, stride, bpp);				\
}

/*
 * XFree86 empties the root BorderClip when the VT is inactive,
 * here's a macro which uses that to disable GetImage and GetSpans
 */

#define fbWindowEnabled(pWin) \
    RegionNotEmpty(&(pWin)->drawable.pScreen->root->borderClip)

#define fbDrawableEnabled(pDrawable) \
    ((pDrawable)->type == DRAWABLE_PIXMAP ? \
     TRUE : fbWindowEnabled((WindowPtr) pDrawable))

#define FbPowerOfTwo(w)	    (((w) & ((w) - 1)) == 0)
/*
 * Accelerated tiles are power of 2 width <= FB_UNIT
 */
#define FbEvenTile(w)	    ((w) <= FB_UNIT && FbPowerOfTwo(w))

/*
 * fb24_32.c
 */
extern _X_EXPORT void

fb24_32GetSpans(DrawablePtr pDrawable,
                int wMax,
                DDXPointPtr ppt, int *pwidth, int nspans, char *pchardstStart);

extern _X_EXPORT void

fb24_32SetSpans(DrawablePtr pDrawable,
                GCPtr pGC,
                char *src,
                DDXPointPtr ppt, int *pwidth, int nspans, int fSorted);

extern _X_EXPORT void

fb24_32PutZImage(DrawablePtr pDrawable,
                 RegionPtr pClip,
                 int alu,
                 FbBits pm,
                 int x,
                 int y, int width, int height, CARD8 *src, FbStride srcStride);

extern _X_EXPORT void

fb24_32GetImage(DrawablePtr pDrawable,
                int x,
                int y,
                int w,
                int h, unsigned int format, unsigned long planeMask, char *d);

extern _X_EXPORT void

fb24_32CopyMtoN(DrawablePtr pSrcDrawable,
                DrawablePtr pDstDrawable,
                GCPtr pGC,
                BoxPtr pbox,
                int nbox,
                int dx,
                int dy,
                Bool reverse, Bool upsidedown, Pixel bitplane, void *closure);

extern _X_EXPORT PixmapPtr
 fb24_32ReformatTile(PixmapPtr pOldTile, int bitsPerPixel);

extern _X_EXPORT Bool
 fb24_32CreateScreenResources(ScreenPtr pScreen);

extern _X_EXPORT Bool

fb24_32ModifyPixmapHeader(PixmapPtr pPixmap,
                          int width,
                          int height,
                          int depth,
                          int bitsPerPixel, int devKind, void *pPixData);

/*
 * fballpriv.c
 */
extern _X_EXPORT Bool
fbAllocatePrivates(ScreenPtr pScreen);

/*
 * fbarc.c
 */

extern _X_EXPORT void
fbPolyArc(DrawablePtr pDrawable, GCPtr pGC, int narcs, xArc * parcs);

/*
 * fbbits.c
 */

extern _X_EXPORT void

fbBresSolid8(DrawablePtr pDrawable,
             GCPtr pGC,
             int dashOffset,
             int signdx,
             int signdy,
             int axis, int x, int y, int e, int e1, int e3, int len);

extern _X_EXPORT void

fbBresDash8(DrawablePtr pDrawable,
            GCPtr pGC,
            int dashOffset,
            int signdx,
            int signdy, int axis, int x, int y, int e, int e1, int e3, int len);

extern _X_EXPORT void

fbDots8(FbBits * dst,
        FbStride dstStride,
        int dstBpp,
        BoxPtr pBox,
        xPoint * pts,
        int npt,
        int xorg, int yorg, int xoff, int yoff, FbBits and, FbBits xor);

extern _X_EXPORT void

fbArc8(FbBits * dst,
       FbStride dstStride,
       int dstBpp, xArc * arc, int dx, int dy, FbBits and, FbBits xor);

extern _X_EXPORT void

fbGlyph8(FbBits * dstLine,
         FbStride dstStride,
         int dstBpp, FbStip * stipple, FbBits fg, int height, int shift);

extern _X_EXPORT void

fbPolyline8(DrawablePtr pDrawable,
            GCPtr pGC, int mode, int npt, DDXPointPtr ptsOrig);

extern _X_EXPORT void
 fbPolySegment8(DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pseg);

extern _X_EXPORT void

fbBresSolid16(DrawablePtr pDrawable,
              GCPtr pGC,
              int dashOffset,
              int signdx,
              int signdy,
              int axis, int x, int y, int e, int e1, int e3, int len);

extern _X_EXPORT void

fbBresDash16(DrawablePtr pDrawable,
             GCPtr pGC,
             int dashOffset,
             int signdx,
             int signdy,
             int axis, int x, int y, int e, int e1, int e3, int len);

extern _X_EXPORT void

fbDots16(FbBits * dst,
         FbStride dstStride,
         int dstBpp,
         BoxPtr pBox,
         xPoint * pts,
         int npt,
         int xorg, int yorg, int xoff, int yoff, FbBits and, FbBits xor);

extern _X_EXPORT void

fbArc16(FbBits * dst,
        FbStride dstStride,
        int dstBpp, xArc * arc, int dx, int dy, FbBits and, FbBits xor);

extern _X_EXPORT void

fbGlyph16(FbBits * dstLine,
          FbStride dstStride,
          int dstBpp, FbStip * stipple, FbBits fg, int height, int shift);

extern _X_EXPORT void

fbPolyline16(DrawablePtr pDrawable,
             GCPtr pGC, int mode, int npt, DDXPointPtr ptsOrig);

extern _X_EXPORT void
 fbPolySegment16(DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pseg);

extern _X_EXPORT void

fbBresSolid24(DrawablePtr pDrawable,
              GCPtr pGC,
              int dashOffset,
              int signdx,
              int signdy,
              int axis, int x, int y, int e, int e1, int e3, int len);

extern _X_EXPORT void

fbBresDash24(DrawablePtr pDrawable,
             GCPtr pGC,
             int dashOffset,
             int signdx,
             int signdy,
             int axis, int x, int y, int e, int e1, int e3, int len);

extern _X_EXPORT void

fbDots24(FbBits * dst,
         FbStride dstStride,
         int dstBpp,
         BoxPtr pBox,
         xPoint * pts,
         int npt,
         int xorg, int yorg, int xoff, int yoff, FbBits and, FbBits xor);

extern _X_EXPORT void

fbArc24(FbBits * dst,
        FbStride dstStride,
        int dstBpp, xArc * arc, int dx, int dy, FbBits and, FbBits xor);

extern _X_EXPORT void
fbPolyline24(DrawablePtr pDrawable,
             GCPtr pGC, int mode, int npt, DDXPointPtr ptsOrig);

extern _X_EXPORT void
 fbPolySegment24(DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pseg);

extern _X_EXPORT void

fbBresSolid32(DrawablePtr pDrawable,
              GCPtr pGC,
              int dashOffset,
              int signdx,
              int signdy,
              int axis, int x, int y, int e, int e1, int e3, int len);

extern _X_EXPORT void

fbBresDash32(DrawablePtr pDrawable,
             GCPtr pGC,
             int dashOffset,
             int signdx,
             int signdy,
             int axis, int x, int y, int e, int e1, int e3, int len);

extern _X_EXPORT void

fbDots32(FbBits * dst,
         FbStride dstStride,
         int dstBpp,
         BoxPtr pBox,
         xPoint * pts,
         int npt,
         int xorg, int yorg, int xoff, int yoff, FbBits and, FbBits xor);

extern _X_EXPORT void

fbArc32(FbBits * dst,
        FbStride dstStride,
        int dstBpp, xArc * arc, int dx, int dy, FbBits and, FbBits xor);

extern _X_EXPORT void

fbGlyph32(FbBits * dstLine,
          FbStride dstStride,
          int dstBpp, FbStip * stipple, FbBits fg, int height, int shift);
extern _X_EXPORT void

fbPolyline32(DrawablePtr pDrawable,
             GCPtr pGC, int mode, int npt, DDXPointPtr ptsOrig);

extern _X_EXPORT void
 fbPolySegment32(DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pseg);

/*
 * fbblt.c
 */
extern _X_EXPORT void

fbBlt(FbBits * src,
      FbStride srcStride,
      int srcX,
      FbBits * dst,
      FbStride dstStride,
      int dstX,
      int width,
      int height, int alu, FbBits pm, int bpp, Bool reverse, Bool upsidedown);

extern _X_EXPORT void

fbBlt24(FbBits * srcLine,
        FbStride srcStride,
        int srcX,
        FbBits * dstLine,
        FbStride dstStride,
        int dstX,
        int width,
        int height, int alu, FbBits pm, Bool reverse, Bool upsidedown);

extern _X_EXPORT void
 fbBltStip(FbStip * src, FbStride srcStride,    /* in FbStip units, not FbBits units */
           int srcX, FbStip * dst, FbStride dstStride,  /* in FbStip units, not FbBits units */
           int dstX, int width, int height, int alu, FbBits pm, int bpp);

/*
 * fbbltone.c
 */
extern _X_EXPORT void

fbBltOne(FbStip * src,
         FbStride srcStride,
         int srcX,
         FbBits * dst,
         FbStride dstStride,
         int dstX,
         int dstBpp,
         int width,
         int height, FbBits fgand, FbBits fbxor, FbBits bgand, FbBits bgxor);

extern _X_EXPORT void
 fbBltOne24(FbStip * src, FbStride srcStride,   /* FbStip units per scanline */
            int srcX,           /* bit position of source */
            FbBits * dst, FbStride dstStride,   /* FbBits units per scanline */
            int dstX,           /* bit position of dest */
            int dstBpp,         /* bits per destination unit */
            int width,          /* width in bits of destination */
            int height,         /* height in scanlines */
            FbBits fgand,       /* rrop values */
            FbBits fgxor, FbBits bgand, FbBits bgxor);

extern _X_EXPORT void

fbBltPlane(FbBits * src,
           FbStride srcStride,
           int srcX,
           int srcBpp,
           FbStip * dst,
           FbStride dstStride,
           int dstX,
           int width,
           int height,
           FbStip fgand,
           FbStip fgxor, FbStip bgand, FbStip bgxor, Pixel planeMask);

/*
 * fbcmap_mi.c
 */
extern _X_EXPORT int
 fbListInstalledColormaps(ScreenPtr pScreen, Colormap * pmaps);

extern _X_EXPORT void
 fbInstallColormap(ColormapPtr pmap);

extern _X_EXPORT void
 fbUninstallColormap(ColormapPtr pmap);

extern _X_EXPORT void

fbResolveColor(unsigned short *pred,
               unsigned short *pgreen,
               unsigned short *pblue, VisualPtr pVisual);

extern _X_EXPORT Bool
 fbInitializeColormap(ColormapPtr pmap);

extern _X_EXPORT int

fbExpandDirectColors(ColormapPtr pmap,
                     int ndef, xColorItem * indefs, xColorItem * outdefs);

extern _X_EXPORT Bool
 fbCreateDefColormap(ScreenPtr pScreen);

extern _X_EXPORT void
 fbClearVisualTypes(void);

extern _X_EXPORT Bool
 fbHasVisualTypes(int depth);

extern _X_EXPORT Bool
 fbSetVisualTypes(int depth, int visuals, int bitsPerRGB);

extern _X_EXPORT Bool

fbSetVisualTypesAndMasks(int depth, int visuals, int bitsPerRGB,
                         Pixel redMask, Pixel greenMask, Pixel blueMask);

extern _X_EXPORT Bool

fbInitVisuals(VisualPtr * visualp,
              DepthPtr * depthp,
              int *nvisualp,
              int *ndepthp,
              int *rootDepthp,
              VisualID * defaultVisp, unsigned long sizes, int bitsPerRGB);

/*
 * fbcopy.c
 */

extern _X_EXPORT void

fbCopyNtoN(DrawablePtr pSrcDrawable,
           DrawablePtr pDstDrawable,
           GCPtr pGC,
           BoxPtr pbox,
           int nbox,
           int dx,
           int dy,
           Bool reverse, Bool upsidedown, Pixel bitplane, void *closure);

extern _X_EXPORT void

fbCopy1toN(DrawablePtr pSrcDrawable,
           DrawablePtr pDstDrawable,
           GCPtr pGC,
           BoxPtr pbox,
           int nbox,
           int dx,
           int dy,
           Bool reverse, Bool upsidedown, Pixel bitplane, void *closure);

extern _X_EXPORT void

fbCopyNto1(DrawablePtr pSrcDrawable,
           DrawablePtr pDstDrawable,
           GCPtr pGC,
           BoxPtr pbox,
           int nbox,
           int dx,
           int dy,
           Bool reverse, Bool upsidedown, Pixel bitplane, void *closure);

extern _X_EXPORT RegionPtr

fbCopyArea(DrawablePtr pSrcDrawable,
           DrawablePtr pDstDrawable,
           GCPtr pGC,
           int xIn, int yIn, int widthSrc, int heightSrc, int xOut, int yOut);

extern _X_EXPORT RegionPtr

fbCopyPlane(DrawablePtr pSrcDrawable,
            DrawablePtr pDstDrawable,
            GCPtr pGC,
            int xIn,
            int yIn,
            int widthSrc,
            int heightSrc, int xOut, int yOut, unsigned long bitplane);

/*
 * fbfill.c
 */
extern _X_EXPORT void
 fbFill(DrawablePtr pDrawable, GCPtr pGC, int x, int y, int width, int height);

extern _X_EXPORT void

fbSolidBoxClipped(DrawablePtr pDrawable,
                  RegionPtr pClip,
                  int xa, int ya, int xb, int yb, FbBits and, FbBits xor);

/*
 * fbfillrect.c
 */
extern _X_EXPORT void

fbPolyFillRect(DrawablePtr pDrawable,
               GCPtr pGC, int nrectInit, xRectangle *prectInit);

#define fbPolyFillArc miPolyFillArc

#define fbFillPolygon miFillPolygon

/*
 * fbfillsp.c
 */
extern _X_EXPORT void

fbFillSpans(DrawablePtr pDrawable,
            GCPtr pGC,
            int nInit, DDXPointPtr pptInit, int *pwidthInit, int fSorted);

/*
 * fbgc.c
 */

extern _X_EXPORT Bool
 fbCreateGC(GCPtr pGC);

extern _X_EXPORT void
 fbPadPixmap(PixmapPtr pPixmap);

extern _X_EXPORT void
 fbValidateGC(GCPtr pGC, unsigned long changes, DrawablePtr pDrawable);

/*
 * fbgetsp.c
 */
extern _X_EXPORT void

fbGetSpans(DrawablePtr pDrawable,
           int wMax,
           DDXPointPtr ppt, int *pwidth, int nspans, char *pchardstStart);

/*
 * fbglyph.c
 */

extern _X_EXPORT void

fbPolyGlyphBlt(DrawablePtr pDrawable,
               GCPtr pGC,
               int x,
               int y,
               unsigned int nglyph, CharInfoPtr * ppci, void *pglyphBase);

extern _X_EXPORT void

fbImageGlyphBlt(DrawablePtr pDrawable,
                GCPtr pGC,
                int x,
                int y,
                unsigned int nglyph, CharInfoPtr * ppci, void *pglyphBase);

/*
 * fbimage.c
 */

extern _X_EXPORT void

fbPutImage(DrawablePtr pDrawable,
           GCPtr pGC,
           int depth,
           int x, int y, int w, int h, int leftPad, int format, char *pImage);

extern _X_EXPORT void

fbPutZImage(DrawablePtr pDrawable,
            RegionPtr pClip,
            int alu,
            FbBits pm,
            int x,
            int y, int width, int height, FbStip * src, FbStride srcStride);

extern _X_EXPORT void

fbPutXYImage(DrawablePtr pDrawable,
             RegionPtr pClip,
             FbBits fg,
             FbBits bg,
             FbBits pm,
             int alu,
             Bool opaque,
             int x,
             int y,
             int width, int height, FbStip * src, FbStride srcStride, int srcX);

extern _X_EXPORT void

fbGetImage(DrawablePtr pDrawable,
           int x,
           int y,
           int w, int h, unsigned int format, unsigned long planeMask, char *d);
/*
 * fbline.c
 */

extern _X_EXPORT void

fbZeroLine(DrawablePtr pDrawable,
           GCPtr pGC, int mode, int npt, DDXPointPtr ppt);

extern _X_EXPORT void
 fbZeroSegment(DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pSegs);

extern _X_EXPORT void

fbPolyLine(DrawablePtr pDrawable,
           GCPtr pGC, int mode, int npt, DDXPointPtr ppt);

extern _X_EXPORT void
 fbFixCoordModePrevious(int npt, DDXPointPtr ppt);

extern _X_EXPORT void
 fbPolySegment(DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pseg);

#define fbPolyRectangle	miPolyRectangle

/*
 * fbpict.c
 */

extern _X_EXPORT Bool
 fbPictureInit(ScreenPtr pScreen, PictFormatPtr formats, int nformats);

extern _X_EXPORT void
fbDestroyGlyphCache(void);

/*
 * fbpixmap.c
 */

extern _X_EXPORT PixmapPtr

fbCreatePixmapBpp(ScreenPtr pScreen, int width, int height, int depth, int bpp,
                  unsigned usage_hint);

extern _X_EXPORT PixmapPtr

fbCreatePixmap(ScreenPtr pScreen, int width, int height, int depth,
               unsigned usage_hint);

extern _X_EXPORT Bool
 fbDestroyPixmap(PixmapPtr pPixmap);

extern _X_EXPORT RegionPtr
 fbPixmapToRegion(PixmapPtr pPix);

/*
 * fbpoint.c
 */

extern _X_EXPORT void

fbDots(FbBits * dstOrig,
       FbStride dstStride,
       int dstBpp,
       BoxPtr pBox,
       xPoint * pts,
       int npt,
       int xorg, int yorg, int xoff, int yoff, FbBits andOrig, FbBits xorOrig);

extern _X_EXPORT void

fbPolyPoint(DrawablePtr pDrawable,
            GCPtr pGC, int mode, int npt, xPoint * pptInit);

/*
 * fbpush.c
 */
extern _X_EXPORT void

fbPushPattern(DrawablePtr pDrawable,
              GCPtr pGC,
              FbStip * src,
              FbStride srcStride,
              int srcX, int x, int y, int width, int height);

extern _X_EXPORT void

fbPushFill(DrawablePtr pDrawable,
           GCPtr pGC,
           FbStip * src,
           FbStride srcStride, int srcX, int x, int y, int width, int height);

extern _X_EXPORT void

fbPushImage(DrawablePtr pDrawable,
            GCPtr pGC,
            FbStip * src,
            FbStride srcStride, int srcX, int x, int y, int width, int height);

extern _X_EXPORT void

fbPushPixels(GCPtr pGC,
             PixmapPtr pBitmap,
             DrawablePtr pDrawable, int dx, int dy, int xOrg, int yOrg);

/*
 * fbscreen.c
 */

extern _X_EXPORT Bool
 fbCloseScreen(ScreenPtr pScreen);

extern _X_EXPORT Bool
 fbRealizeFont(ScreenPtr pScreen, FontPtr pFont);

extern _X_EXPORT Bool
 fbUnrealizeFont(ScreenPtr pScreen, FontPtr pFont);

extern _X_EXPORT void

fbQueryBestSize(int class,
                unsigned short *width, unsigned short *height,
                ScreenPtr pScreen);

extern _X_EXPORT PixmapPtr
 _fbGetWindowPixmap(WindowPtr pWindow);

extern _X_EXPORT void
 _fbSetWindowPixmap(WindowPtr pWindow, PixmapPtr pPixmap);

extern _X_EXPORT Bool
 fbSetupScreen(ScreenPtr pScreen, void *pbits,        /* pointer to screen bitmap */
               int xsize,       /* in pixels */
               int ysize, int dpix,     /* dots per inch */
               int dpiy, int width,     /* pixel width of frame buffer */
               int bpp);        /* bits per pixel of frame buffer */

extern _X_EXPORT Bool

wfbFinishScreenInit(ScreenPtr pScreen,
                    void *pbits,
                    int xsize,
                    int ysize,
                    int dpix,
                    int dpiy,
                    int width,
                    int bpp,
                    SetupWrapProcPtr setupWrap, FinishWrapProcPtr finishWrap);

extern _X_EXPORT Bool

wfbScreenInit(ScreenPtr pScreen,
              void *pbits,
              int xsize,
              int ysize,
              int dpix,
              int dpiy,
              int width,
              int bpp,
              SetupWrapProcPtr setupWrap, FinishWrapProcPtr finishWrap);

extern _X_EXPORT Bool

fbFinishScreenInit(ScreenPtr pScreen,
                   void *pbits,
                   int xsize,
                   int ysize, int dpix, int dpiy, int width, int bpp);

extern _X_EXPORT Bool

fbScreenInit(ScreenPtr pScreen,
             void *pbits,
             int xsize, int ysize, int dpix, int dpiy, int width, int bpp);

/*
 * fbseg.c
 */
typedef void FbBres(DrawablePtr pDrawable,
                    GCPtr pGC,
                    int dashOffset,
                    int signdx,
                    int signdy,
                    int axis, int x, int y, int e, int e1, int e3, int len);

extern _X_EXPORT FbBres fbBresSolid, fbBresDash, fbBresFill, fbBresFillDash;

/*
 * fbsetsp.c
 */

extern _X_EXPORT void

fbSetSpans(DrawablePtr pDrawable,
           GCPtr pGC,
           char *src, DDXPointPtr ppt, int *pwidth, int nspans, int fSorted);

extern _X_EXPORT FbBres *fbSelectBres(DrawablePtr pDrawable, GCPtr pGC);

extern _X_EXPORT void

fbBres(DrawablePtr pDrawable,
       GCPtr pGC,
       int dashOffset,
       int signdx,
       int signdy, int axis, int x, int y, int e, int e1, int e3, int len);

extern _X_EXPORT void

fbSegment(DrawablePtr pDrawable,
          GCPtr pGC,
          int xa, int ya, int xb, int yb, Bool drawLast, int *dashOffset);

/*
 * fbsolid.c
 */

extern _X_EXPORT void

fbSolid(FbBits * dst,
        FbStride dstStride,
        int dstX, int bpp, int width, int height, FbBits and, FbBits xor);

extern _X_EXPORT void

fbSolid24(FbBits * dst,
          FbStride dstStride,
          int dstX, int width, int height, FbBits and, FbBits xor);

/*
 * fbutil.c
 */
extern _X_EXPORT FbBits fbReplicatePixel(Pixel p, int bpp);

#ifdef FB_ACCESS_WRAPPER
extern _X_EXPORT ReadMemoryProcPtr wfbReadMemory;
extern _X_EXPORT WriteMemoryProcPtr wfbWriteMemory;
#endif

/*
 * fbwindow.c
 */

extern _X_EXPORT Bool
 fbCreateWindow(WindowPtr pWin);

extern _X_EXPORT Bool
 fbDestroyWindow(WindowPtr pWin);

extern _X_EXPORT Bool
 fbRealizeWindow(WindowPtr pWindow);

extern _X_EXPORT Bool
 fbPositionWindow(WindowPtr pWin, int x, int y);

extern _X_EXPORT Bool
 fbUnrealizeWindow(WindowPtr pWindow);

extern _X_EXPORT void

fbCopyWindowProc(DrawablePtr pSrcDrawable,
                 DrawablePtr pDstDrawable,
                 GCPtr pGC,
                 BoxPtr pbox,
                 int nbox,
                 int dx,
                 int dy,
                 Bool reverse, Bool upsidedown, Pixel bitplane, void *closure);

extern _X_EXPORT void
 fbCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc);

extern _X_EXPORT Bool
 fbChangeWindowAttributes(WindowPtr pWin, unsigned long mask);

extern _X_EXPORT void

fbFillRegionSolid(DrawablePtr pDrawable,
                  RegionPtr pRegion, FbBits and, FbBits xor);

extern _X_EXPORT pixman_image_t *image_from_pict(PicturePtr pict,
                                                 Bool has_clip,
                                                 int *xoff, int *yoff);

extern _X_EXPORT void free_pixman_pict(PicturePtr, pixman_image_t *);

#endif                          /* _FB_H_ */