/* $XConsortium: mpdither.c,v 1.5 94/04/17 20:35:17 rws Exp $ */ /**** module mpdither.c ****/ /****************************************************************************** Copyright (c) 1993, 1994 X Consortium Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of the X Consortium shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from the X Consortium. NOTICE This software is being provided by AGE Logic, Inc. under the following license. By obtaining, using and/or copying this software, you agree that you have read, understood, and will comply with these terms and conditions: Permission to use, copy, modify, distribute and sell this software and its documentation for any purpose and without fee or royalty and to grant others any or all rights granted herein is hereby granted, provided that you agree to comply with the following copyright notice and statements, including the disclaimer, and that the same appears on all copies and derivative works of the software and documentation you make. "Copyright 1993, 1994 by AGE Logic, Inc." THIS SOFTWARE IS PROVIDED "AS IS". AGE LOGIC MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. By way of example, but not limitation, AGE LOGIC MAKE NO REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE SOFTWARE DOES NOT INFRINGE THIRD-PARTY PROPRIETARY RIGHTS. AGE LOGIC SHALL BEAR NO LIABILITY FOR ANY USE OF THIS SOFTWARE. IN NO EVENT SHALL EITHER PARTY BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF PROFITS, REVENUE, DATA OR USE, INCURRED BY EITHER PARTY OR ANY THIRD PARTY, WHETHER IN AN ACTION IN CONTRACT OR TORT OR BASED ON A WARRANTY, EVEN IF AGE LOGIC LICENSEES HEREUNDER HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. The name of AGE Logic, Inc. may not be used in advertising or publicity pertaining to this software without specific, written prior permission from AGE Logic. Title to this software shall at all times remain with AGE Logic, Inc. ***************************************************************************** mpdither.c -- DDXIE dither element Larry Hare -- AGE Logic, Inc. May, 1993 *****************************************************************************/ #define _XIEC_MPDITHER #define _XIEC_PDITHER /* * Include files */ #include /* * Core X Includes */ #include #include /* * XIE Includes */ #include #include /* * more X server includes. */ #include #include /* * Server XIE Includes */ #include #include #include #include #include #include /* * routines referenced by other DDXIE modules */ int miAnalyzeDither(); /* * routines used internal to this module */ static int CreateDitherErrorDiffusion(), CreateDitherOrdered(); static int InitializeDitherErrorDiffusion(), InitializeDitherOrdered(); static int ActivateDitherErrorDiffusion(), ActivateDitherOrdered(); static int ResetDitherErrorDiffusion(), ResetDitherOrdered(); static int DestroyDither(); typedef float DitherFloat; /* see xiemd.h */ /* Diffusion Dither Locals */ typedef struct _mpditherEDdef { void (*action) (); DitherFloat *previous; DitherFloat *current; DitherFloat range; DitherFloat range1over; DitherFloat round; INT32 width; } mpDitherEDDefRec, *mpDitherEDDefPtr; static void EdDitherQb(), EdDitherPb(), EdDitherBb(), EdDitherbb(); static void EdDitherQB(), EdDitherPB(), EdDitherBB(); static void EdDitherQP(), EdDitherPP(); static void EdDitherQQ(); /* Ordered Dither Locals */ typedef struct _mpditherOrddef { void (*action) (); CARD32 *matrix; CARD32 ncol; CARD32 nrow; CARD32 shift; CARD32 mult; CARD32 width; } mpDitherOrdDefRec, *mpDitherOrdDefPtr; static Bool SetupOrderMatrix(); static void OrdDitherQb(), OrdDitherPb(), OrdDitherBb(); static void OrdDitherQB(), OrdDitherPB(), OrdDitherBB(); static void OrdDitherQP(), OrdDitherPP(); static void OrdDitherQQ(); /* * DDXIE Dither entry points */ /* static Testing Hack. See mpcnst.c */ ddElemVecRec DitherErrorDiffusion = { CreateDitherErrorDiffusion, InitializeDitherErrorDiffusion, ActivateDitherErrorDiffusion, (xieIntProc)NULL, ResetDitherErrorDiffusion, DestroyDither }; static ddElemVecRec DitherOrdered = { CreateDitherOrdered, InitializeDitherOrdered, ActivateDitherOrdered, (xieIntProc)NULL, ResetDitherOrdered, DestroyDither }; /*------------------------------------------------------------------------ ------------------------ fill in the vector --------------------------- ------------------------------------------------------------------------*/ int miAnalyzeDither(flo,ped) floDefPtr flo; peDefPtr ped; { switch(ped->techVec->number) { case xieValDitherErrorDiffusion: ped->ddVec = DitherErrorDiffusion; break; case xieValDitherOrdered: ped->ddVec = DitherOrdered; break; } return TRUE; } /*------------------------------------------------------------------------ ---------------------------- create peTex . . . -------------------------- ------------------------------------------------------------------------*/ static int CreateDitherErrorDiffusion(flo,ped) floDefPtr flo; peDefPtr ped; { int auxsize = xieValMaxBands * sizeof(mpDitherEDDefRec); return MakePETex(flo,ped,auxsize,NO_SYNC,NO_SYNC); } static int CreateDitherOrdered(flo,ped) floDefPtr flo; peDefPtr ped; { int auxsize = xieValMaxBands * sizeof(mpDitherOrdDefRec); return MakePETex(flo,ped,auxsize,NO_SYNC,NO_SYNC); } /*------------------------------------------------------------------------ ---------------------------- initialize peTex . . . ---------------------- ------------------------------------------------------------------------*/ static int InitializeDitherErrorDiffusion(flo,ped) floDefPtr flo; peDefPtr ped; { peTexPtr pet = ped->peTex; mpDitherEDDefPtr pvt = (mpDitherEDDefPtr) (pet->private); bandMsk bmask = ((xieFloDither *) (ped->elemRaw))->bandMask; bandPtr oband; bandPtr iband; int band, nbands; void (*action) () = (void (*)()) 0; oband = &(pet->emitter[0]); iband = &(pet->receptor[SRCtag].band[0]); nbands = pet->receptor[SRCtag].inFlo->bands; for (band = 0; band < nbands; band++, pvt++, iband++, oband++) { if ((bmask & (1<format->class) { case QUAD_PIXEL: switch (iband->format->class) { case QUAD_PIXEL: action = EdDitherQQ; break; default: break; } break; case PAIR_PIXEL: switch (iband->format->class) { case QUAD_PIXEL: action = EdDitherQP; break; case PAIR_PIXEL: action = EdDitherPP; break; default: break; } break; case BYTE_PIXEL: switch (iband->format->class) { case QUAD_PIXEL: action = EdDitherQB; break; case PAIR_PIXEL: action = EdDitherPB; break; case BYTE_PIXEL: action = EdDitherBB; break; default: break; } break; case BIT_PIXEL: switch (iband->format->class) { case QUAD_PIXEL: action = EdDitherQb; break; case PAIR_PIXEL: action = EdDitherPb; break; case BYTE_PIXEL: action = EdDitherBb; break; case BIT_PIXEL: action = EdDitherbb; break; default: break; } break; default: break; } if (!action) ImplementationError(flo, ped, return(FALSE)); pvt->action = action; pvt->width = iband->format->width; pvt->range = (iband->format->levels-1.0)/(oband->format->levels-1.0); pvt->round = pvt->range/((DitherFloat)2.0); pvt->range1over = ((DitherFloat) 1.0) / pvt->range; if(pvt->range == 1.0) { bmask &= ~(1<techVec->number == xieValDitherErrorDiffusion) { /* Use XieCalloc to force DitherFloat's to 0.0 */ int auxsize = (pvt->width + 2) * sizeof(DitherFloat) * 2; if(!(pvt->previous = (DitherFloat *) XieCalloc(auxsize))) AllocError(flo, ped, return(FALSE)); pvt->current = pvt->previous + (pvt->width + 2); } } return InitReceptor(flo,ped,&pet->receptor[SRCtag],NO_DATAMAP,1,bmask,~bmask) && InitEmitter(flo,ped,NO_DATAMAP,NO_INPLACE); } static int InitializeDitherOrdered(flo,ped) floDefPtr flo; peDefPtr ped; { peTexPtr pet = ped->peTex; mpDitherOrdDefPtr pvt = (mpDitherOrdDefPtr) pet->private; xieFloDither *elem = (xieFloDither *) (ped->elemRaw); CARD8 thresh = ((xieTecDitherOrdered *) (&elem[1]))->thresholdOrder; bandMsk bmask = elem->bandMask; bandPtr oband; bandPtr iband; int band, nbands; void (*action) () = (void(*)()) 0; oband = &(pet->emitter[0]); iband = &(pet->receptor[SRCtag].band[0]); nbands = pet->receptor[SRCtag].inFlo->bands; for (band = 0; band < nbands; band++, pvt++, iband++, oband++) { if ((bmask & (1<format->class) { case QUAD_PIXEL: switch (iband->format->class) { case QUAD_PIXEL: action = OrdDitherQQ; break; default: break; } break; case PAIR_PIXEL: switch (iband->format->class) { case QUAD_PIXEL: action = OrdDitherQP; break; case PAIR_PIXEL: action = OrdDitherPP; break; default: break; } break; case BYTE_PIXEL: switch (iband->format->class) { case QUAD_PIXEL: action = OrdDitherQB; break; case PAIR_PIXEL: action = OrdDitherPB; break; case BYTE_PIXEL: action = OrdDitherBB; break; default: break; } break; case BIT_PIXEL: switch (iband->format->class) { case QUAD_PIXEL: action = OrdDitherQb; break; case PAIR_PIXEL: action = OrdDitherPb; break; case BYTE_PIXEL: action = OrdDitherBb; break; default: break; } break; default: break; } if (!action) ImplementationError(flo, ped, return(FALSE)); pvt->action = action; pvt->width = iband->format->width; switch (iband->format->class) { case QUAD_PIXEL: pvt->shift=6; break; case PAIR_PIXEL: pvt->shift=14; break; case BYTE_PIXEL: pvt->shift=22; break; } pvt->mult = ((1<shift) * (oband->format->levels-1.0)) / (iband->format->levels-1.0); if(pvt->mult == (1<shift)) { bmask &= ~(1<matrix) AllocError(flo, ped, return(FALSE)); } return InitReceptor(flo,ped,&pet->receptor[SRCtag],NO_DATAMAP,1,bmask,~bmask) && InitEmitter(flo,ped,NO_DATAMAP,NO_INPLACE); } static CARD8 ddmtrx1[] = { 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1 }; static CARD8 ddmtrx2[] = { 1, 2, 1, 2, 3, 0, 3, 0, 1, 2, 1, 2, 3, 0, 3, 0 }; static CARD8 ddmtrx3[] = { 1, 6, 0, 7, 5, 3, 4, 2, 0, 7, 1, 6, 4, 2, 5, 3 }; static CARD8 ddmtrx4[] = { 1, 15, 2, 12, 9, 5, 10, 6, 3, 13, 0, 14, 11, 7, 8, 4 }; static CARD8 ddmtrx5[] = { 1, 28, 6, 26, 0, 29, 7, 27, 17, 9, 22, 14, 16, 8, 23, 15, 5, 25, 3, 30, 4, 24, 2, 31, 21, 13, 19, 11, 20, 12, 18, 10, }; static CARD8 ddmtrx6[] = { 1, 59, 15, 55, 2, 56, 12, 52, 33, 17, 47, 31, 34, 18, 44, 28, 9, 49, 5, 63, 10, 50, 6, 60, 41, 25, 37, 21, 42, 26, 38, 22, 3, 57, 13, 53, 0, 58, 14, 54, 35, 19, 45, 29, 32, 16, 46, 30, 11, 51, 7, 61, 8, 48, 4, 62, 43, 27, 39, 23, 40, 24, 36, 20 }; static CARD8 ddmtrx7[] = { 1, 116, 28, 108, 6, 114, 26, 106, 0, 117, 29, 109, 7, 115, 27, 107, 65, 33, 92, 60, 70, 38, 90, 58, 64, 32, 93, 61, 71, 39, 91, 59, 17, 97, 9, 124, 22, 102, 14, 122, 16, 96, 8, 125, 23, 103, 15, 123, 81, 49, 73, 41, 86, 54, 78, 46, 80, 48, 72, 40, 87, 55, 79, 47, 5, 113, 25, 105, 3, 118, 30, 110, 4, 112, 24, 104, 2, 119, 31, 111, 69, 37, 89, 57, 67, 35, 94, 62, 68, 36, 88, 56, 66, 34, 95, 63, 21, 101, 13, 121, 19, 99, 11, 126, 20, 100, 12, 120, 18, 98, 10, 127, 85, 53, 77, 45, 83, 51, 75, 43, 84, 52, 76, 44, 82, 50, 74, 42, }; static CARD8 ddmtrx8[] = { 1, 235, 49, 219, 15, 231, 55, 215, 2, 232, 56, 216, 12, 228, 52, 212, 129, 65, 187, 123, 143, 79, 183, 119, 130, 66, 184, 120, 140, 76, 180, 116, 33, 193, 17, 251, 47, 207, 31, 247, 34, 194, 18, 248, 44, 204, 28, 244, 161, 97, 145, 81, 175, 111, 159, 95, 162, 98, 146, 82, 172, 108, 156, 92, 9, 225, 49, 209, 5, 239, 63, 223, 10, 226, 50, 210, 6, 236, 60, 220, 137, 73, 177, 113, 133, 69, 191, 127, 138, 74, 178, 114, 134, 70, 188, 124, 41, 201, 25, 241, 37, 197, 21, 255, 42, 202, 26, 242, 38, 198, 22, 252, 169, 105, 153, 89, 165, 101, 149, 85, 170, 106, 154, 90, 166, 102, 150, 86, 3, 233, 57, 217, 13, 229, 53, 213, 0, 234, 58, 218, 14, 230, 54, 214, 131, 67, 185, 121, 141, 77, 181, 117, 128, 64, 186, 122, 142, 78, 182, 118, 35, 195, 19, 249, 45, 205, 29, 245, 32, 192, 16, 250, 46, 206, 30, 246, 163, 99, 147, 83, 173, 109, 157, 93, 160, 96, 144, 80, 174, 110, 158, 94, 11, 227, 51, 211, 7, 237, 61, 221, 8, 224, 48, 208, 4, 238, 62, 222, 139, 75, 179, 115, 135, 71, 189, 127, 136, 72, 176, 112, 132, 68, 190, 126, 43, 203, 27, 243, 39, 199, 23, 253, 40, 200, 24, 240, 36, 196, 20, 254, 171, 107, 155, 91, 167, 103, 151, 87, 168, 104, 152, 88, 164, 100, 148, 84 }; static Bool SetupOrderMatrix(pvt, threshold) mpDitherOrdDefPtr pvt; CARD32 threshold; { CARD32 shift = 1 << pvt->shift; CARD32 *mtrx; CARD8 *srcmtrx; CARD32 nr, nc, nt; INT32 m; switch(threshold) { case 1: srcmtrx = ddmtrx1; nr = 4; nc = 4; nt = 2; break; case 2: srcmtrx = ddmtrx2; nr = 4; nc = 4; nt = 4; break; case 3: srcmtrx = ddmtrx3; nr = 4; nc = 4; nt = 8; break; case 4: srcmtrx = ddmtrx4; nr = 4; nc = 4; nt = 16; break; case 5: srcmtrx = ddmtrx5; nr = 4; nc = 8; nt = 32; break; case 6: srcmtrx = ddmtrx6; nr = 8; nc = 8; nt = 64; break; case 7: srcmtrx = ddmtrx7; nr = 8; nc =16; nt = 128; break; default: case 8: srcmtrx = ddmtrx8; nr =16; nc =16; nt = 256; break; } if (!(mtrx = (CARD32 *)XieMalloc(nr * nc * sizeof(CARD32)))) return FALSE; for (m = nr * nc -1; m >= 0 ; m--) mtrx[m] = ((CARD32)srcmtrx[m] * shift + (shift>>1)) / nt; /* ** This would be a good place to spin the matrix to avoid ** aligning the dither pattern on triple band images. */ pvt->ncol = nc; pvt->nrow = nr; pvt->matrix = mtrx; return TRUE; } /*------------------------------------------------------------------------ ----------------------------- crank some data ---------------------------- ------------------------------------------------------------------------*/ static int ActivateDitherErrorDiffusion(flo,ped,pet) floDefPtr flo; peDefPtr ped; peTexPtr pet; { mpDitherEDDefPtr pvt = (mpDitherEDDefPtr) pet->private; bandPtr oband = &(pet->emitter[0]); bandPtr iband = &(pet->receptor[SRCtag].band[0]); int band, nbands = pet->receptor[SRCtag].inFlo->bands; for(band = 0; band < nbands; band++, pvt++, iband++, oband++) { register pointer inp, outp; if (!(inp = GetCurrentSrc(flo,pet,iband)) || !(outp = GetCurrentDst(flo,pet,oband))) continue; do { (*(pvt->action)) (inp, outp, pvt); { /* Swap error buffers */ DitherFloat *curr = pvt->current; curr = pvt->current; pvt->current = pvt->previous; pvt->previous = curr; } inp = GetNextSrc(flo,pet,iband,FLUSH); outp = GetNextDst(flo,pet,oband,FLUSH); } while (inp && outp) ; FreeData(flo, pet, iband, iband->current); } return TRUE; } /*------------------------------------------------------------------------ ----------------------------- crank some data ---------------------------- ------------------------------------------------------------------------*/ static int ActivateDitherOrdered(flo,ped,pet) floDefPtr flo; peDefPtr ped; peTexPtr pet; { mpDitherOrdDefPtr pvt = (mpDitherOrdDefPtr) pet->private; bandPtr oband = &(pet->emitter[0]); bandPtr iband = &(pet->receptor[SRCtag].band[0]); int band, nbands = pet->receptor[SRCtag].inFlo->bands; for(band = 0; band < nbands; band++, pvt++, iband++, oband++) { register pointer inp, outp; if (!(inp = GetCurrentSrc(flo,pet,iband)) || !(outp = GetCurrentDst(flo,pet,oband))) continue; do { (*(pvt->action)) (inp, outp, pvt, oband->current); inp = GetNextSrc(flo,pet,iband,FLUSH); outp = GetNextDst(flo,pet,oband,FLUSH); } while (inp && outp) ; FreeData(flo, pet, iband, iband->current); } return TRUE; } /*------------------------------------------------------------------------ ------------------------ get rid of run-time stuff ----------------------- ------------------------------------------------------------------------*/ static int ResetDitherErrorDiffusion(flo,ped) floDefPtr flo; peDefPtr ped; { mpDitherEDDefPtr pvt = (mpDitherEDDefPtr) ped->peTex->private; int band; /* free any dynamic private data */ for (band = 0 ; band < xieValMaxBands ; band++, pvt++) { pvt->width = 0; pvt->action = 0; if (pvt->previous) pvt->previous = (DitherFloat *) XieFree(pvt->previous); } ResetReceptors(ped); ResetEmitter(ped); return TRUE; } static int ResetDitherOrdered(flo,ped) floDefPtr flo; peDefPtr ped; { mpDitherOrdDefPtr pvt = (mpDitherOrdDefPtr) ped->peTex->private; int band; /* free any dynamic private data */ for (band = 0 ; band < xieValMaxBands ; band++, pvt++) { pvt->width = 0; pvt->action = 0; if (pvt->matrix) pvt->matrix = (CARD32 *) XieFree(pvt->matrix); } ResetReceptors(ped); ResetEmitter(ped); return TRUE; } /*------------------------------------------------------------------------ -------------------------- get rid of this element ----------------------- ------------------------------------------------------------------------*/ static int DestroyDither(flo,ped) floDefPtr flo; peDefPtr ped; { ped->peTex = (peTexPtr) XieFree(ped->peTex); /* zap this element's entry point vector */ ped->ddVec.create = (xieIntProc)NULL; ped->ddVec.initialize = (xieIntProc)NULL; ped->ddVec.activate = (xieIntProc)NULL; ped->ddVec.reset = (xieIntProc)NULL; ped->ddVec.destroy = (xieIntProc)NULL; return TRUE; } /*------------------------------------------------------------------------ ------------------------------- Macro Mania ------------------------------ ------------------------------------------------------------------------*/ /* ** The only legal bit to bit dither is 2 levels to 1 level. */ static void EdDitherbb(inp,outp,pvt) pointer inp; pointer outp; mpDitherEDDefPtr pvt; { bzero((char *)outp, (pvt->width+7)>>3); } /* ** Quads, Pairs, and Bytes can be dithered to bits. Since this code is ** so slow anyway, don't get too excited about optimizing the bit output. */ #define MakeEdBit(fn_name,itype,otype) \ static void fn_name(INP,OUTP,pvt) \ pointer INP; pointer OUTP; mpDitherEDDefPtr pvt; \ { \ register itype *inp = (itype *) INP; \ register LogInt *outp = (LogInt *) OUTP; \ register unsigned int actual; \ register DitherFloat range = pvt->range; \ register DitherFloat round = pvt->round; \ register DitherFloat *prev = pvt->previous; \ register DitherFloat *curr = pvt->current; \ register DitherFloat range1over = pvt->range1over; \ register DitherFloat current = *curr, desire; \ register int ix, bw = pvt->width; \ bzero((char *)outp, (bw+7)>>3); \ for (ix = 0; ix < bw; ix++) { \ desire = inp[ix] + ((DitherFloat) .4375 * current) + \ ((DitherFloat) .0625 * *(prev+0)) + \ ((DitherFloat) .3125 * *(prev+1)) + \ ((DitherFloat) .1875 * *(prev+2)) ; \ prev++; \ actual = (desire+round)*range1over; \ if (actual) { \ LOG_setbit(outp,ix); \ *++curr = current = desire - actual*range; \ } else \ *++curr = current = desire; \ } \ } /* ** All the other multitudes of combinations. */ #define MakeEdPix(fn_name,itype,otype) \ static void fn_name(INP,OUTP,pvt) \ pointer INP; pointer OUTP; mpDitherEDDefPtr pvt; \ { \ register itype *inp = (itype *) INP; \ register otype *outp = (otype *) OUTP, actual; \ register DitherFloat range = pvt->range; \ register DitherFloat round = pvt->round; \ register DitherFloat *prev = pvt->previous; \ register DitherFloat *curr = pvt->current; \ register DitherFloat current = *curr, desire; \ register DitherFloat range1over = pvt->range1over; \ register int ix, bw = pvt->width; \ for (ix = 0; ix < bw; ix++) { \ desire = inp[ix] + ((DitherFloat) .4375 * current) + \ ((DitherFloat) .0625 * *(prev+0)) + \ ((DitherFloat) .3125 * *(prev+1)) + \ ((DitherFloat) .1875 * *(prev+2)) ; \ prev++; \ *outp++ = actual = (desire+round)*range1over; \ *++curr = current = (desire - actual*range); \ } \ } MakeEdBit (EdDitherQb,QuadPixel,BitPixel) MakeEdBit (EdDitherPb,PairPixel,BitPixel) MakeEdBit (EdDitherBb,BytePixel,BitPixel) MakeEdPix (EdDitherQB,QuadPixel,BytePixel) MakeEdPix (EdDitherPB,PairPixel,BytePixel) MakeEdPix (EdDitherBB,BytePixel,BytePixel) MakeEdPix (EdDitherQP,QuadPixel,PairPixel) MakeEdPix (EdDitherPP,PairPixel,PairPixel) MakeEdPix (EdDitherQQ,QuadPixel,QuadPixel) /*------------------------------------------------------------------------ ------------------------------- Macro Mania ------------------------------ ------------------------------------------------------------------------*/ #define MakeOrdBit(fn_name,itype,otype) \ static void fn_name(INP,OUTP,pvt,ycur) \ pointer INP; pointer OUTP; mpDitherOrdDefPtr pvt; int ycur; \ { \ register itype *inp = (itype *) INP; \ register LogInt *outp = (LogInt *) OUTP; \ register CARD32 mult = pvt->mult; \ register CARD32 shift = pvt->shift; \ register CARD32 ncol = pvt->ncol; \ register CARD32 *mtrx; \ register CARD32 jcol, nw; \ register LogInt outval, M; \ register int bw = pvt->width; \ CARD32 nrow = pvt->nrow; \ mtrx = pvt->matrix + ((ycur & (nrow-1)) * ncol); \ jcol = ((ncol > nrow) && (ycur & nrow)) ? nrow : 0; \ for (ncol--, nw = (bw >> LOGSHIFT); nw > 0; nw--) { \ for (M=LOGLEFT, outval = 0; M ; LOGRIGHT(M)) { \ register CARD32 value1, value2; \ value1 = (*inp++ * mult + mtrx[jcol++]) >> shift; \ value2 = (*inp++ * mult + mtrx[jcol++]) >> shift; \ if (value1) outval |= M; \ value1 = (*inp++ * mult + mtrx[jcol++]) >> shift; \ LOGRIGHT(M); if (value2) outval |= M; \ value2 = (*inp++ * mult + mtrx[jcol++]) >> shift; \ LOGRIGHT(M); if (value1) outval |= M; \ jcol &= ncol; \ LOGRIGHT(M); if (value2) outval |= M; \ } \ *outp++ = outval; \ } \ if ((nw = (bw & LOGMASK))) { \ for (M=LOGLEFT, outval = 0; nw ; nw--, LOGRIGHT(M)) { \ if ((mtrx[jcol++] + *inp++ * mult) >> shift) \ outval |= M; \ jcol &= ncol; \ } \ *outp = outval; \ } \ } #define MakeOrdPix(fn_name,itype,otype) \ static void fn_name(INP,OUTP,pvt,ycur) \ pointer INP; pointer OUTP; mpDitherOrdDefPtr pvt; int ycur; \ { \ register itype *inp = (itype *) INP; \ register otype *outp = (otype *) OUTP; \ register CARD32 mult = pvt->mult; \ register CARD32 shift = pvt->shift; \ register CARD32 ncol = pvt->ncol; \ register CARD32 *mtrx; \ register CARD32 jcol; \ register int bw = pvt->width; \ CARD32 nrow = pvt->nrow; \ mtrx = pvt->matrix + ((ycur & (nrow-1)) * ncol); \ jcol = ((ncol > nrow) && (ycur & nrow)) ? nrow : 0; \ for (ncol--, bw-- ; bw > 0; bw -= 4) { \ /* unroll four times is all we can do safely */ \ register CARD32 value1, value2; \ value1 = (*inp++ * mult + mtrx[jcol++]) >> shift; \ value2 = (*inp++ * mult + mtrx[jcol++]) >> shift; \ *outp++ = value1; \ value1 = (*inp++ * mult + mtrx[jcol++]) >> shift; \ *outp++ = value2; \ value2 = (*inp++ * mult + mtrx[jcol++]) >> shift; \ *outp++ = value1; \ jcol &= ncol; \ *outp++ = value2; \ } \ for ( ; bw >= 0; bw--) \ *outp++ = (*inp++ * mult + mtrx[jcol++]) >> shift; \ } MakeOrdBit (OrdDitherQb,QuadPixel,BitPixel) MakeOrdBit (OrdDitherPb,PairPixel,BitPixel) MakeOrdBit (OrdDitherBb,BytePixel,BitPixel) MakeOrdPix (OrdDitherQB,QuadPixel,BytePixel) MakeOrdPix (OrdDitherPB,PairPixel,BytePixel) MakeOrdPix (OrdDitherBB,BytePixel,BytePixel) MakeOrdPix (OrdDitherQP,QuadPixel,PairPixel) MakeOrdPix (OrdDitherPP,PairPixel,PairPixel) MakeOrdPix (OrdDitherQQ,QuadPixel,QuadPixel) /* end module mpdither.c */