/ BBS in a Box 10 / BBS In A Box Volume X (AMUG) (January 1994).bin / Files / Prog / U-Z / VideoToolBox.cpt / VideoToolboxSources / ConvolveX.c

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+--------+-------------------------+-------------------------+--------+--------+
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|00000080| 2f 2a 20 0d 43 6f 6e 76 | 6f 6c 76 65 58 2f 59 2e |/* .Conv|olveX/Y.|
|00000090| 63 0d a9 20 31 39 38 39 | 2d 31 39 39 33 20 44 65 |c.. 1989|-1993 De|
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|00000cf0| 62 6c 65 6d 20 63 61 75 | 73 65 64 20 62 79 20 74 |blem cau|sed by t|
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|00000d20| 64 65 6f 54 6f 6f 6c 62 | 6f 78 2e 68 22 0d 23 69 |deoToolb|ox.h".#i|
|00000d30| 6e 63 6c 75 64 65 20 3c | 6d 61 74 68 2e 68 3e 0d |nclude <|math.h>.|
|00000d40| 76 6f 69 64 20 43 6f 6e | 76 6f 6c 76 65 58 59 28 |void Con|volveXY(|
|00000d50| 64 6f 75 62 6c 65 20 66 | 5b 5d 2c 69 6e 74 20 64 |double f|[],int d|
|00000d60| 69 6d 2c 42 69 74 4d 61 | 70 20 2a 73 72 63 42 69 |im,BitMa|p *srcBi|
|00000d70| 74 73 0d 09 2c 42 69 74 | 4d 61 70 20 2a 64 73 74 |ts..,Bit|Map *dst|
|00000d80| 42 69 74 73 2c 52 65 63 | 74 20 2a 73 72 63 52 65 |Bits,Rec|t *srcRe|
|00000d90| 63 74 50 74 72 2c 52 65 | 63 74 20 2a 64 73 74 52 |ctPtr,Re|ct *dstR|
|00000da0| 65 63 74 50 74 72 2c 69 | 6e 74 20 63 6f 6e 76 6f |ectPtr,i|nt convo|
|00000db0| 6c 76 65 58 29 3b 0d 23 | 64 65 66 69 6e 65 20 44 |lveX);.#|define D|
|00000dc0| 49 41 47 4e 4f 53 54 49 | 43 53 20 30 09 09 2f 2f |IAGNOSTI|CS 0..//|
|00000dd0| 20 74 72 75 65 20 6f 72 | 20 66 61 6c 73 65 0d 23 | true or| false.#|
|00000de0| 64 65 66 69 6e 65 20 49 | 4d 50 52 4f 56 45 44 5f |define I|MPROVED_|
|00000df0| 52 4f 55 4e 44 49 4e 47 | 20 31 09 2f 2f 20 74 72 |ROUNDING| 1.// tr|
|00000e00| 75 65 20 6f 72 20 66 61 | 6c 73 65 0d 0d 76 6f 69 |ue or fa|lse..voi|
|00000e10| 64 20 43 6f 6e 76 6f 6c | 76 65 58 28 64 6f 75 62 |d Convol|veX(doub|
|00000e20| 6c 65 20 66 5b 5d 2c 69 | 6e 74 20 64 69 6d 2c 42 |le f[],i|nt dim,B|
|00000e30| 69 74 4d 61 70 20 2a 73 | 72 63 42 69 74 73 0d 09 |itMap *s|rcBits..|
|00000e40| 2c 42 69 74 4d 61 70 20 | 2a 64 73 74 42 69 74 73 |,BitMap |*dstBits|
|00000e50| 2c 52 65 63 74 20 2a 73 | 72 63 52 65 63 74 50 74 |,Rect *s|rcRectPt|
|00000e60| 72 2c 52 65 63 74 20 2a | 64 73 74 52 65 63 74 50 |r,Rect *|dstRectP|
|00000e70| 74 72 29 0d 7b 0d 09 43 | 6f 6e 76 6f 6c 76 65 58 |tr).{..C|onvolveX|
|00000e80| 59 28 66 2c 64 69 6d 2c | 73 72 63 42 69 74 73 2c |Y(f,dim,|srcBits,|
|00000e90| 64 73 74 42 69 74 73 2c | 73 72 63 52 65 63 74 50 |dstBits,|srcRectP|
|00000ea0| 74 72 2c 64 73 74 52 65 | 63 74 50 74 72 2c 31 29 |tr,dstRe|ctPtr,1)|
|00000eb0| 3b 0d 7d 0d 0d 76 6f 69 | 64 20 43 6f 6e 76 6f 6c |;.}..voi|d Convol|
|00000ec0| 76 65 59 28 64 6f 75 62 | 6c 65 20 66 5b 5d 2c 69 |veY(doub|le f[],i|
|00000ed0| 6e 74 20 64 69 6d 2c 42 | 69 74 4d 61 70 20 2a 73 |nt dim,B|itMap *s|
|00000ee0| 72 63 42 69 74 73 0d 09 | 2c 42 69 74 4d 61 70 20 |rcBits..|,BitMap |
|00000ef0| 2a 64 73 74 42 69 74 73 | 2c 52 65 63 74 20 2a 73 |*dstBits|,Rect *s|
|00000f00| 72 63 52 65 63 74 50 74 | 72 2c 52 65 63 74 20 2a |rcRectPt|r,Rect *|
|00000f10| 64 73 74 52 65 63 74 50 | 74 72 29 0d 7b 0d 09 43 |dstRectP|tr).{..C|
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|00000f50| 63 74 50 74 72 2c 30 29 | 3b 0d 7d 0d 0d 76 6f 69 |ctPtr,0)|;.}..voi|
|00000f60| 64 20 43 6f 6e 76 6f 6c | 76 65 58 59 28 64 6f 75 |d Convol|veXY(dou|
|00000f70| 62 6c 65 20 66 5b 5d 2c | 69 6e 74 20 64 69 6d 2c |ble f[],|int dim,|
|00000f80| 42 69 74 4d 61 70 20 2a | 73 72 63 42 69 74 73 0d |BitMap *|srcBits.|
|00000f90| 09 2c 42 69 74 4d 61 70 | 20 2a 64 73 74 42 69 74 |.,BitMap| *dstBit|
|00000fa0| 73 2c 52 65 63 74 20 2a | 73 72 63 52 65 63 74 50 |s,Rect *|srcRectP|
|00000fb0| 74 72 2c 52 65 63 74 20 | 2a 64 73 74 52 65 63 74 |tr,Rect |*dstRect|
|00000fc0| 50 74 72 2c 69 6e 74 20 | 63 6f 6e 76 6f 6c 76 65 |Ptr,int |convolve|
|00000fd0| 58 29 0d 7b 0d 09 52 65 | 63 74 20 6d 79 73 72 63 |X).{..Re|ct mysrc|
|00000fe0| 52 65 63 74 2c 6d 79 64 | 73 74 52 65 63 74 3b 0d |Rect,myd|stRect;.|
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|00001010| 2c 73 72 63 4c 65 6e 67 | 74 68 3b 0d 09 69 6e 74 |,srcLeng|th;..int|
|00001020| 20 6c 69 6e 65 73 3b 0d | 09 75 6e 73 69 67 6e 65 | lines;.|.unsigne|
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|00001040| 55 4c 4c 3b 0d 09 72 65 | 67 69 73 74 65 72 20 75 |ULL;..re|gister u|
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|000010c0| 72 3b 0d 09 6c 6f 6e 67 | 20 69 66 75 6e 53 63 61 |r;..long| ifunSca|
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|000010e0| 78 2c 69 6d 69 6e 2c 69 | 6d 61 78 3b 0d 09 64 6f |x,imin,i|max;..do|
|000010f0| 75 62 6c 65 20 74 6d 61 | 78 3b 0d 09 50 69 78 4d |uble tma|x;..PixM|
|00001100| 61 70 20 73 72 63 54 6d | 70 2c 64 73 74 54 6d 70 |ap srcTm|p,dstTmp|
|00001110| 3b 09 2f 2a 20 6c 69 6e | 65 20 62 75 66 66 65 72 |;./* lin|e buffer|
|00001120| 73 20 2a 2f 0d 09 23 69 | 66 20 44 49 41 47 4e 4f |s */..#i|f DIAGNO|
|00001130| 53 54 49 43 53 0d 09 09 | 47 44 48 61 6e 64 6c 65 |STICS...|GDHandle|
|00001140| 20 64 65 76 69 63 65 3d | 4e 55 4c 4c 3b 0d 09 09 | device=|NULL;...|
|00001150| 64 6f 75 62 6c 65 20 61 | 3b 0d 09 23 65 6e 64 69 |double a|;..#endi|
|00001160| 66 0d 09 73 68 6f 72 74 | 20 73 72 63 50 69 78 65 |f..short| srcPixe|
|00001170| 6c 53 69 7a 65 2c 64 73 | 74 50 69 78 65 6c 53 69 |lSize,ds|tPixelSi|
|00001180| 7a 65 3b 0d 09 69 6e 74 | 20 65 72 72 6f 72 3b 0d |ze;..int| error;.|
|00001190| 09 6c 6f 6e 67 20 76 61 | 6c 75 65 3b 0d 09 63 68 |.long va|lue;..ch|
|000011a0| 61 72 20 6d 6d 75 4d 6f | 64 65 3d 74 72 75 65 33 |ar mmuMo|de=true3|
|000011b0| 32 62 3b 0d 09 0d 09 52 | 65 63 74 54 6f 41 64 64 |2b;....R|ectToAdd|
|000011c0| 72 65 73 73 28 28 50 69 | 78 4d 61 70 20 2a 29 73 |ress((Pi|xMap *)s|
|000011d0| 72 63 42 69 74 73 2c 73 | 72 63 52 65 63 74 50 74 |rcBits,s|rcRectPt|
|000011e0| 72 2c 4e 55 4c 4c 2c 26 | 73 72 63 50 69 78 65 6c |r,NULL,&|srcPixel|
|000011f0| 53 69 7a 65 2c 4e 55 4c | 4c 29 3b 0d 09 52 65 63 |Size,NUL|L);..Rec|
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|00001220| 52 65 63 74 50 74 72 2c | 4e 55 4c 4c 2c 26 64 73 |RectPtr,|NULL,&ds|
|00001230| 74 50 69 78 65 6c 53 69 | 7a 65 2c 4e 55 4c 4c 29 |tPixelSi|ze,NULL)|
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|00001250| 2a 29 20 6d 61 6c 6c 6f | 63 28 64 69 6d 2a 73 69 |*) mallo|c(dim*si|
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|00001280| 7b 0d 09 09 50 72 69 6e | 74 66 45 78 69 74 28 22 |{...Prin|tfExit("|
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|000012f0| 75 6d 20 69 6e 20 61 20 | 6c 6f 6e 67 20 72 65 67 |um in a |long reg|
|00001300| 69 73 74 65 72 2e 0d 09 | 54 68 65 20 73 75 6d 20 |ister...|The sum |
|00001310| 6f 76 65 72 20 74 68 65 | 20 70 6f 69 6e 74 20 73 |over the| point s|
|00001320| 70 72 65 61 64 20 66 75 | 6e 63 74 69 6f 6e 20 66 |pread fu|nction f|
|00001330| 5b 5d 20 77 69 6c 6c 20 | 79 69 65 6c 64 20 61 74 |[] will |yield at|
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|00001350| 6e 65 64 20 62 65 6c 6f | 77 2c 0d 09 73 6f 20 77 |ned belo|w,..so w|
|00001360| 65 20 63 61 6e 20 73 61 | 66 65 6c 79 20 6d 75 6c |e can sa|fely mul|
|00001370| 74 69 70 6c 79 20 66 5b | 5d 20 62 79 20 4c 4f 4e |tiply f[|] by LON|
|00001380| 47 5f 4d 41 58 2f 74 6d | 61 78 2c 20 77 69 74 68 |G_MAX/tm|ax, with|
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|000013c0| 20 69 3d 30 3b 69 3c 64 | 69 6d 3b 69 2b 2b 29 20 | i=0;i<d|im;i++) |
|000013d0| 74 6d 61 78 20 2b 3d 20 | 66 61 62 73 28 66 5b 69 |tmax += |fabs(f[i|
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|000013f0| 41 52 5f 4d 41 58 2b 31 | 3b 09 2f 2a 20 6d 61 78 |AR_MAX+1|;./* max|
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|00001450| 53 63 61 6c 65 20 3d 20 | 4c 4f 4e 47 5f 4d 41 58 |Scale = |LONG_MAX|
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|00001490| 63 61 6c 65 3b 0d 09 0d | 09 23 69 66 20 44 49 41 |cale;...|.#if DIA|
|000014a0| 47 4e 4f 53 54 49 43 53 | 0d 09 09 2f 2a 20 54 68 |GNOSTICS|.../* Th|
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|000014d0| 72 61 63 6b 20 64 6f 77 | 6e 20 6f 76 65 72 66 6c |rack dow|n overfl|
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|00001500| 2e 30 3b 0d 09 09 66 6f | 72 20 28 69 3d 30 3b 69 |.0;...fo|r (i=0;i|
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|00001530| 41 58 2a 69 66 75 6e 5b | 69 5d 29 3b 0d 09 09 09 |AX*ifun[|i]);....|
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|000019f0| 63 52 65 63 74 50 74 72 | 2d 3e 62 6f 74 74 6f 6d |cRectPtr|->bottom|
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|00001a30| 74 2d 64 73 74 52 65 63 | 74 50 74 72 2d 3e 6c 65 |t-dstRec|tPtr->le|
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|00001a50| 3d 20 73 72 63 52 65 63 | 74 50 74 72 2d 3e 72 69 |= srcRec|tPtr->ri|
|00001a60| 67 68 74 2d 73 72 63 52 | 65 63 74 50 74 72 2d 3e |ght-srcR|ectPtr->|
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|00001a80| 64 73 74 4c 65 6e 67 74 | 68 20 3d 20 64 73 74 52 |dstLengt|h = dstR|
|00001a90| 65 63 74 50 74 72 2d 3e | 62 6f 74 74 6f 6d 2d 64 |ectPtr->|bottom-d|
|00001aa0| 73 74 52 65 63 74 50 74 | 72 2d 3e 74 6f 70 3b 0d |stRectPt|r->top;.|
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|00001ac0| 63 52 65 63 74 50 74 72 | 2d 3e 62 6f 74 74 6f 6d |cRectPtr|->bottom|
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|00001bf0| 74 20 50 69 78 4d 61 70 | 20 66 69 65 6c 64 73 20 |t PixMap| fields |
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|00001c10| 73 69 6f 6e 3d 73 72 63 | 54 6d 70 2e 70 61 63 6b |sion=src|Tmp.pack|
|00001c20| 54 79 70 65 3d 73 72 63 | 54 6d 70 2e 70 61 63 6b |Type=src|Tmp.pack|
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|00001c70| 3d 31 3b 0d 09 73 72 63 | 54 6d 70 2e 70 69 78 65 |=1;..src|Tmp.pixe|
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|00001d50| 69 63 61 6c 20 6c 69 6e | 65 20 62 75 66 66 65 72 |ical lin|e buffer|
|00001d60| 20 2a 2f 0d 09 7d 0d 09 | 73 72 63 54 6d 70 2e 72 | */..}..|srcTmp.r|
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|00001d80| 72 63 54 6d 70 2e 62 6f | 75 6e 64 73 2e 72 69 67 |rcTmp.bo|unds.rig|
|00001d90| 68 74 2d 73 72 63 54 6d | 70 2e 62 6f 75 6e 64 73 |ht-srcTm|p.bounds|
|00001da0| 2e 6c 65 66 74 29 2a 73 | 72 63 54 6d 70 2e 70 69 |.left)*s|rcTmp.pi|
|00001db0| 78 65 6c 53 69 7a 65 2b | 31 35 29 2f 31 36 29 3b |xelSize+|15)/16);|
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|00001dd0| 72 20 3d 20 28 50 74 72 | 29 20 6d 61 6c 6c 6f 63 |r = (Ptr|) malloc|
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|00001df0| 2a 28 73 72 63 54 6d 70 | 2e 62 6f 75 6e 64 73 2e |*(srcTmp|.bounds.|
|00001e00| 62 6f 74 74 6f 6d 2d 73 | 72 63 54 6d 70 2e 62 6f |bottom-s|rcTmp.bo|
|00001e10| 75 6e 64 73 2e 74 6f 70 | 29 29 3b 0d 09 73 72 63 |unds.top|));..src|
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|00001e30| 30 78 38 30 30 30 3b 09 | 2f 2a 20 4d 61 72 6b 20 |0x8000;.|/* Mark |
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|00001e50| 6e 6f 74 20 61 20 42 69 | 74 4d 61 70 20 2a 2f 0d |not a Bi|tMap */.|
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|00001e80| 7b 0d 09 09 53 65 74 52 | 65 63 74 28 26 64 73 74 |{...SetR|ect(&dst|
|00001e90| 54 6d 70 2e 62 6f 75 6e | 64 73 2c 30 2c 30 2c 64 |Tmp.boun|ds,0,0,d|
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|00001f00| 2a 20 61 20 76 65 72 74 | 69 63 61 6c 20 6c 69 6e |* a vert|ical lin|
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|00001f50| 70 2e 62 6f 75 6e 64 73 | 2e 6c 65 66 74 29 2a 64 |p.bounds|.left)*d|
|00001f60| 73 74 54 6d 70 2e 70 69 | 78 65 6c 53 69 7a 65 2b |stTmp.pi|xelSize+|
|00001f70| 31 35 29 2f 31 36 29 3b | 0d 09 64 73 74 54 6d 70 |15)/16);|..dstTmp|
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|00001f90| 29 20 6d 61 6c 6c 6f 63 | 28 64 73 74 54 6d 70 2e |) malloc|(dstTmp.|
|00001fa0| 72 6f 77 42 79 74 65 73 | 2a 28 64 73 74 54 6d 70 |rowBytes|*(dstTmp|
|00001fb0| 2e 62 6f 75 6e 64 73 2e | 62 6f 74 74 6f 6d 2d 64 |.bounds.|bottom-d|
|00001fc0| 73 74 54 6d 70 2e 62 6f | 75 6e 64 73 2e 74 6f 70 |stTmp.bo|unds.top|
|00001fd0| 29 29 3b 0d 09 64 73 74 | 54 6d 70 2e 72 6f 77 42 |));..dst|Tmp.rowB|
|00001fe0| 79 74 65 73 20 7c 3d 20 | 30 78 38 30 30 30 3b 09 |ytes |= |0x8000;.|
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|000020d0| 61 70 20 73 72 63 20 61 | 6e 64 20 64 73 74 20 74 |ap src a|nd dst t|
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+--------+-------------------------+-------------------------+--------+--------+