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sys7.1-doc-wip/QuickDraw/ColorMgr.a
Elliot Nunn cf5093687a Everything
2020-05-10 13:37:38 +08:00

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;
; Hacks to match MacOS (most recent first):
;
; <Sys7.1> 8/3/92 Elliot make this change
; 9/2/94 SuperMario ROM source dump (header preserved below)
;
;
; File: ColorMgr.a
;
; Copyright: © 1981-1990, 1992-1993 by Apple Computer, Inc., all rights reserved.
;
; Change History (most recent first):
;
; <SM8> 11/7/93 SAM Changed GetCTable to get a new seed if the id > 1023 (kMinSeed).
; <SM6> 9/13/93 SAM Changed all instances of _Translate24to32 to _rTranslate24to32
; so they can conditionalized out of the build.
; <SM4> 1/21/93 KW (LW3 fau) Rolled in the MySaveEntries patch: In SaveEntries, if
; the bpp is ≥ 16bpp it will exit with an error, but the code was
; not returning the stack to it's correct state. Renamed all the
; labels in SaveEntries that started with a SE to SaveEnt so they
; don't clash with the ones in SetEntries, that also start with
; SE.
; <SM3> 12/19/92 HI Modified GetCTable to copy the 'clut' resources instead of
; just detaching the resource handle because sometimes GetCTable
; modifies the 'clut' but it can't sice the SuperMario 'clut'
; resource overrides the System file's resource. Hence a RAM copy
; of the ROM's 'clut' resource must be made. This fixes the bug
; of machine freezing when switching to 16 colors. (Hoon Im)
; <SM2> 6/11/92 stb <sm 6/9/92>stb add comments from QDciPatchROM.a to MakeITable,
; AdjZone, Collapse, NewHandleTempSysApp, Index2Color,
; InvertColor, DelSearch, DelComp; this file is synched with
; QDciPatchROM.a
; <16> 1/18/91 dvb Don't restore color environment if it hasn't been changed.
; Modify SetEntries to mark flag in QDSpare.
; <15> 11/6/90 KON GetCTable should return NIL if call fails. This is at an offset
; of 6, not 8. [SMC]
; <14> 10/29/90 KON If GetCTable fails, it should return NIL. There were cases where
; it returned without setting the return value at all.
; <13> 9/17/90 BG Removed <10>. 040s are now behaving more reliably.
; <12> 8/21/90 KON No need to _HLock and _HUnlock search element handle in
; Color2Index.
; <11> 7/24/90 gbm change a duplicate symbol or two
; <10> 6/25/90 BG Added EclipseNOPs to deal with flakey 040s.
; <9> 5/29/90 KON Make DelSearch and DelComp jive with ci patch.
; <8> 5/29/90 KON Call Translate24to32 on addresses passed to DelSearch and
; DelComp so they match the addresses in the gDevice.
; <7> 3/26/90 KON Use NewHandle,sys rather than change zone when getting memory
; for ITable. Fix comp proc bug in _InvertColor.
; <6> 3/2/90 KON If app heap is the same as sys heap, only check for memory once.
; <5> 3/1/90 KON Change MakeITable so it first looks in Tmp memory, then in sys
; memory, and finally theZone for memory.
; <4> 1/31/90 BAL Fixed replication of 5 bit components in Index2Color to use the
; same algorithm as Search16toIndexed (stretch.a) in order to make
; SeedCFill/CalcCMask happy.
; <3> 1/30/90 DAF Removed CLUTBusy asynchronous flags from SetEntries. They
; didn't work well and broke Studio/8.
; <2> 1/16/90 BAL Changed MakeITab to restore theZone during error returns.
; <•2.3> 7/14/89 BAL For Aurora: Final CQD
; <2.2> 6/30/89 BAL GetCTable will not modify 2 bit CLUT if hilite color is a gray.
; ∂
; <2.1> 6/15/89 BAL Changed source to use ReserveBit instead of Reserve; Fixed bug
; in makeGray tab.
; <2.0> 6/12/89 BAL Added ; to 1.9
; <1.9> 6/12/89 BAL Stopped Color2Index,Index2Color from clearing QDErr. Rolled in
; fix to MyGetCTable.
; <1.8> 6/10/89 CEL Moved Private.a QuickDraw Equates into proper QuickDraw private
; file (colorequ.a), got rid of QuickDraw nFiles dependencies and
; fixed up necessary files…
; <•1.7> 5/29/89 BAL Blasting in 32-Bit QuickDraw version 1.0 Final
; <1.6> 5/15/89 DAF Corrected GetCTable (actually myGetCTable) to always return a
; non-purgeable cTabHandle
; 5/14/89 DAF Fixed GetCTable to return non-purgeable handle if from system
; resource.
; <1.5> 4/20/89 GGD Fixed assembly error (missing semicolon) so that the ROMs can
; build again.
; <1.4> 4/19/89 DAF Rolled in system disk patch to SetEntries (additional error
; checking).
; 4/19/89 DAF Rolled in SaveEntries patch from system file.
; <•1.3> 4/12/89 BAL Blasting in 32-Bit QuickDraw 1.0B1
; 4/5/89 DAF Added additional error checking to RestoreEntries.
; 4/24/87 DAF Fixed MakeITable not to SysError on memory failures (from
; romfix78)
; <C835> 2/20/87 DAF MakeITable gets queue sizes from a resource now. Exported
; ITabMatch and vector to it from Color2Index. ReserveEntry
; changes ctSeed when deactivating reserve bit.
; <C824> 2/15/87 DAF Fixed displacement into hidden color table in ITabMatch to work
; correctly in 5-bit res mode.
; <C777> 2/9/87 DAF Reactivated usage of .value fields for protect, reserve and
; ownerID. Made ReserveEntry change ctSeed.
; <C751> 2/3/87 DAF Separated ProtErr test for protect and reserve in SetEntries
; (err only if .value field doesn't match clientID. Adjusted
; ReserveEntry to set clientID when reserve=TRUE. Added range and
; protection error checking to SetCommon. Adjusted seeding code in
; MakeITable for common loop for single loop exit, and to seed
; original colors in a different order.
; <C733> 2/2/87 DAF Fixed MakeITable to test if result table can be allocated early,
; so it doesn't need to SysError, and cleaned up zone setting.
; SetEntries now returns a ProtErr when attempting to change
; reserved entries. RealColor fixed to compare only iTable
; resolution bits of each channel. Updated error codes throughout.
; <C695> 1/26/87 DAF Made _Control calls immediate. Added range-checking for res and
; default color- and inverse tables to MakeITable
; <C666> 1/22/87 DAF Fixed trashed registers in MakeSubTable. Changed searchProc
; chain to be handles instead of pointers. Added
; DeleteSearch,DeleteComp routines.
; <C645> 1/15/87 DAF Fixed 5-Bit ITable building by expanding TblSize to a long
; <C575> 12/30/86 DAF Made some minor bug fixes to SetCommon and MakeITable
; <C491> 12/6/86 DAF Made fixes from code review. Changed interfaces of
; Color2Index,Index2Color, and SetEntry (now SetEntries)
; <C387> 11/9/86 DAF Refined Save/RestoreEntries (added reqLSize field), improved
; error handling added QDErr routine.
; <C348> 11/4/86 DAF Added Save/RestoreEntries
; <C294> 10/26/86 DAF Updated SetEntry to call video driver
; <C241> 10/20/86 DAF Fixed TFB CLUT address temporarily
; <C239> 10/19/86 DAF Added ITSeed to inverse tables. Made ITabMatch rebuild invalid
; iTable
; 10/13/86 EHB Delete packCLUT and unpackCLUT. No packed CLUTs!
; <C367> 10/7/86 DAF Removed temp patches in SetEntry
; 10/5/86 DAF Added a number of unimplemented routines
; 8/12/86 EHB Added CTSeed field to color tables built by unpackClut
; 8/12/86 EHB INIT VALUE FIELD TO ENTRY NUMBER
; 7/24/86 DAF New today
;
; To Do:
;
;EASE$$$ READ ONLY COPY of file “ColorMgr.a”
;•2.3 BAL 07/14/1989 For Aurora: Final CQD
; 2.2 BAL 06/30/1989 GetCTable will not modify 2 bit CLUT if hilite color is a gray. ∂
;Changed MakeITable to use MFTemp memory if allocation of its work buffer in the app heap fails.∂
;If MakeITable returns an error, ITabMatch will use the stale inverse table instead of aborting.
; 2.1 BAL 06/15/1989 Changed source to use ReserveBit instead of Reserve; Fixed bug in makeGray tab.
; 2.0 BAL 06/12/1989 Added ; to 1.9
; 1.9 BAL 06/12/1989 Stopped Color2Index,Index2Color from clearing QDErr. Rolled in fix to MyGetCTable.
; 1.8 CEL 06/10/1989 Moved Private.a QuickDraw Equates into proper QuickDraw
; private file (colorequ.a), got rid of QuickDraw nFiles dependencies
; and fixed up necessary files…
;•1.7 BAL 05/29/1989 Blasting in 32-Bit QuickDraw version 1.0 Final
; 1.6 DAF 05/15/1989 Corrected GetCTable (actually myGetCTable) to always
; return a non-purgeable cTabHandle
; 1.5 GGD 04/20/1989 Fixed assembly error (missing semicolon) so that the ROMs can
; build again.
; 1.4 DAF 04/19/1989 Rolled in system disk patch to SetEntries (additional
; error checking).
;•1.3 BAL 04/12/1989 Blasting in 32-Bit QuickDraw 1.0B1
;
; File ColorMgr.a
;
; Copyright Apple Computer, Inc. 1981-1986
; All Rights Reserved
;
;
;------------------------------------------
;
; Color Manager
;
; This code provides services for matching RGB color specifications to
; color look-up table indices, implements the device-independent layer
; of functions such as setting color table entries, and includes
; some useful utilities for dealing with pixelmaps.
;
; Modification History:
; ----------------------------
;
; 24-Jul-86 DAF New today
; 12AUG86 EHB INIT VALUE FIELD TO ENTRY NUMBER
; 12Aug86 EHB Added CTSeed field to color tables built by unpackClut
; 05Oct86 DAF Added a number of unimplemented routines
; 13oct86 EHB Delete packCLUT and unpackCLUT. No packed CLUTs!
;<C239/19Oct86> DAF Added ITSeed to inverse tables. Made ITabMatch rebuild
; invalid iTable
;<C241/20Oct86> DAF Fixed TFB CLUT address temporarily
;<C294/26Oct86> DAF Updated SetEntry to call video driver
;<C348/04Nov86> DAF Added Save/RestoreEntries
;<C367/07Oct86> DAF Removed temp patches in SetEntry
;<C387/09Nov86> DAF Refined Save/RestoreEntries (added reqLSize field), improved error handling
; added QDErr routine.
;<C491/06Dec86> DAF Made fixes from code review. Changed interfaces of Color2Index,Index2Color,
; and SetEntry (now SetEntries)
;<C575/30Dec86> DAF Made some minor bug fixes to SetCommon and MakeITable
;<C645/15Jan87> DAF Fixed 5-Bit ITable building by expanding TblSize to a long
;<C666/22Jan87> DAF Fixed trashed registers in MakeSubTable. Changed searchProc chain to be
; handles instead of pointers. Added DeleteSearch,DeleteComp routines.
;<C695/26Jan87> DAF Made _Control calls immediate. Added range-checking for res and default
; color- and inverse tables to MakeITable
;<C733/02Feb87> DAF Fixed MakeITable to test if result table can be allocated early, so it
; doesn't need to SysError, and cleaned up zone setting. SetEntries now
; returns a ProtErr when attempting to change reserved entries. RealColor
; fixed to compare only iTable resolution bits of each channel. Updated
; error codes throughout.
;<C751/03Feb87> DAF Separated ProtErr test for protect and reserve in SetEntries (err only if
; .value field doesn't match clientID. Adjusted ReserveEntry to set clientID
; when reserve=TRUE. Added range and protection error checking to SetCommon.
; Adjusted seeding code in MakeITable for common loop for single loop
; exit, and to seed original colors in a different order.
;<C777/09Feb87> DAF Reactivated usage of .value fields for protect, reserve and ownerID. Made
; ReserveEntry change ctSeed.
;<C824/15Feb87> DAF Fixed displacement into hidden color table in ITabMatch to work correctly
; in 5-bit res mode.
;<C835/20Feb87> DAF MakeITable gets queue sizes from a resource now. Exported ITabMatch
; and vector to it from Color2Index. ReserveEntry changes ctSeed when
; deactivating reserve bit.
;_______________________________________________________________________
;
; Post Mac II Release
;_______________________________________________________________________
;
; <24Apr87> DAF Fixed MakeITable not to SysError on memory failures (from romfix78)
;_______________________________________________________________________
;
; The Colorful World of 32-bit QuickDraw
;
; <05Apr89> DAF Added additional error checking to RestoreEntries.
; <19Apr89 DAF Rolled in SaveEntries patch from system file.
; <14May89> DAF Fixed GetCTable to return non-purgeable handle if from
; system resource.
; <30Jan98 DAF Removed CLUTBusy change-blocking flag in SetEntries
;_______________________________________________________________________
MACHINE MC68020
;---------------------------
; TEMPORARY EXPORTS OF UNIMPLEMENTED ROUTINES.
UPDATEPIXMAP PROC EXPORT
RTS
;
; QUEUE and DEQUEUE : macro definitions for circular queue maintainance, as
; used by MakeITable. They expect : A4 = queue insertion pointer
; A5 = end of queue memory
; A1 = queue removal pointer
; QStart(A6) = start of queue memory
; D0 is trashed
MACRO
QUEUE &reg1,&reg2 ;
CMP.L A4,A5 ; is it time to wrap?
BNE.S @88 ; nope, so continue
MOVE.L QStart(A6),A4 ; wrap back
@88 MOVE.L &reg1,D0 ; copy it to D0
ADD.L &reg2,D0 ; and add the other reg
MOVE.W D0,(A4)+ ; put it in the queue
ENDM
MACRO
DEQUEUE &reg ;
CMP.L A1,A5 ; is it time to wrap?
BNE.S @97 ; nope, so continue
MOVE.L QStart(A6),A1 ; wrap back
@97 CMP.L A4,A1 ; is it done?
BNE.S @98 ; not done, so get a displacement
MOVEQ #0,&reg ; return the completion signal
BRA.S @99 ;
@98 MOVE.W (A1)+,&reg ; get the next displacement
@99
ENDM
MakeITable PROC EXPORT
EXPORT MakeGrayITab
;----------------------------------------------------------------
;
; PROCEDURE MakeITable (CTABH: CTabHandle; ITabH: ITabHandle; res:integer);
;
; This procedure builds an inverse lookup table with res bits per channel
; based on the specified color table. Algorithm by MJ Potel, based on Voronoi theory.
; Algorithm modified by Art Cabral, adding a linked list at the end of the table
; which is used to find hidden colors in Color2Index.
;
; Still to be done : Consolidate Queue and table into 1 memory block
; Convert to bitmap/iLUT form
; Eliminate BTST for TST.B
;
; 1. Use supplied cTabHandle and iTabHandle. This makes it context independent.
; 2. Compress directly into iTable. A little faster.
; 3. Shouldn't need to to error checking in QUEUE and DEQUEUE
; contains the fix from QDciPatchROM.a to first search temp memory, then system <sm 6/9/92>stb
; zone, then finally theZone. <sm 6/9/92>stb
UNDEF EQU $8000 ; hi bit on
BOUND EQU $7FFF ; non-neg, large unused index
QInTempBit EQU $00
ITableInTempBit EQU $01
PARAMSIZE EQU 10 ; total bytes of params
CTabH EQU PARAMSIZE+8-4 ; Color table handle
ITabH EQU CTabH-4 ; ITable handle
RES EQU ITabH-2 ; entry size
QStart EQU -4 ; pointer to the queue
SvZone EQU QStart-4 ; save the current zone
TblH EQU SvZone-4 ; copy of our temp ITable
TblSize EQU TblH-4 ; size of our temp ITable
InfoOffset EQU TblSize-4 ; offset to ITInfoTable from ITabH
isTmpHandle EQU InfoOffset-2 ; boolean->true if TblH is a TmpMem handle
QHandle EQU isTmpHandle-4 ; Handle for queue <28Feb90 KON>
VARSIZE EQU QHandle
LINK A6,#VARSIZE ; set up a stack frame
MOVEM.L A2-A5/D3-D7,-(SP) ; save 'em all
; move.l theZone,SvZone(A6) ; save the current heap zone for later restore <16Jan90> BAL
CLR.W QDErr ; clear QDError flag <C666/22Jan87> DAF
MOVE res(A6),D7 ; get the channel size <C777/12Feb87> EHB
CMP.L #-1,theGDevice ; if -1, then it's uninitialized <C777/12Feb87> DAF
BEQ.S @ResCheck ; OK, so continue <C777/12Feb87> DAF
@GDevOK
MOVE.L ([theGDevice]),A0 ; get a pointer to the current device <C777/12Feb87> DAF
; test the parameters. If ITabH or CTabH are NIL, substitute handles from theGDevice <C695/26Jan87> DAF
TST.L ITabH(A6) ; is ITabH NIL? <C695/26Jan87> DAF
BNE.S @DoCTabH ; no, so continue <C695/26Jan87> DAF
MOVE.L GDITable(A0),ITabH(A6) ; stick theGDevice's ITabH in stack frame <C695/26Jan87> DAF
@DoCTabH
TST.L CTabH(A6) ; is CTabH NIL? <C695/26Jan87> DAF
BNE.S @DoITabRes ; no, so continue <C695/26Jan87> DAF
MOVE.L ([GDPMap,A0]),A1 ; get pixMap's handle <C695/26Jan87> DAF
MOVE.L PMTable(A1),CTabH(A6) ; get the device colorTable's pointer <C695/26Jan87> DAF
@DoITabRes
; get the ITable resolution
TST D7 ; test the channel size <C777/09Feb87> EHB
BNE.S @ResCheck ; if valid, continue <C695/26Jan87> DAF
; the res parameter was 0, so get theGDevice's preferred resolution <C777/09Feb87> DAF
MOVE.W GDResPref(A0),D7 ; get the preferred ITabRes <C695/26Jan87> DAF
BNE.S @ResSubst ; if non-zero, then continue <C777/09Feb87> DAF
MOVEQ #4,D7 ; if resPref=0, then force to 4 <C777/09Feb87> DAF
@ResSubst
MOVE.W D7,res(A6) ; and put it in the stack frame <C695/26Jan87> DAF
@ResCheck
CMP.W #2,D7 ; don't accept res≤2 <C695/26Jan87> DAF
BLE.S @BadRes ; <C695/26Jan87> DAF
CMP.W #6,D7 ; or ≥ 6 <C695/26Jan87> DAF
BLT.S @ResOK ; <C695/26Jan87> DAF
@BadRes MOVE.W #cResErr,QDErr ; mark the error and quit <C695/26Jan87> DAF
BRA MITDone ; <C695/26Jan87> DAF
@ResOK ; <C695/26Jan87> DAF
; Calculate the size of the compressed table and verify the handle
MOVE D7,D1 ; get the channel size <C733/02Feb87> DAF
MOVEQ.L #1,D0 ; prime the register
LSL.L D1,D0 ; calculate 2^^res
LSL.L D1,D0 ; square it
LSL.L D1,D0 ; cube it
ADD.L #ITTable,D0 ; make room for everybody
MOVE.L D0,InfoOffset(A6) ; save offset to end of table
ADD.L #ITExtraSize,D0 ; make room for InfoTable
MOVE.L ITabH(A6),A0 ; get the ITable handle
TST.L (A0) ; is the table purged? <C751/03Feb87> DAF
BEQ.S @1 ; yes, so Realloc it <C751/03Feb87> DAF
_SetHandleSize ; set the size <C751/03Feb87> DAF
BRA.S @2 ; and continue <C751/03Feb87> DAF
@1
_ReallocHandle ; <C751/03Feb87> DAF
@2
BEQ.S @SizeOK ; => size ok, so continue <C733/02Feb87> DAF
MOVE.W #CNoMemErr,QDErr ; report this error <C733/02Feb87> DAF
BRA MITDone ; and quit <C733/02Feb87> DAF
@SizeOK
;--------------------------------------------------------------------- <BAL 15Mar89>
;
; Cruise through the clut and check if all non-reserved entries are grays.
; If they are then build a gray Itab and set flag in Info header to indicate grayness.
;
move.l CTabH(a6),a0 ;
move.l (a0),a0 ; get CTab ptr
move.w ctSize(a0),d0 ; get clut entries-1
lea ctTable(a0),a1 ; point at first clut entry
@nextEntry
move.l (a1)+,d1 ; pick up value,red
move.l (a1)+,d2 ; pick up green,blue
cmp.w d1,d2 ; red==blue?
bne.s @notGray ;
swap d2 ; get green
cmp.w d1,d2 ; red==green?
bne.s @notGray ;
@skippy dbra d0,@nextEntry ; continue checking
_MakeGrayITab ; go make special Gray ITab
bra MITDone ; all done
@notGray
btst #ReserveBit+24,d1 ; is this entry reserved?
bne.s @skippy ; don't check reserved entries
;--------------------------------------------------------------------- <BAL 15Mar89>
AdjZone
; this is where the patch used to move.w #8080 to force the call to DisposeTempBuffer, <sm 6/9/92>stb
; but now, having had the opportunity to fix the code elsewhere, we don’t have to be <sm 6/9/92>stb
; so tricky, and we can go back to the normal way of doing things. <sm 6/9/92>stb
move.w #0,isTmpHandle(a6) ;assume handles are not in temp memory <28Feb90 KON>
; allocate space on the heap for the queue, reading queue size from resource
SUBQ #4,SP ; make room for the function return <C835/20Feb87> DAF
MOVE.L #'mitq',-(SP) ; push the queue size resource type <C835/20Feb87> DAF
CLR.W -(SP) ; want mitq=0 <C835/20Feb87> DAF
_rGetResource ; system first, then ROM <C835/20Feb87> DAF
MOVE.L (SP)+,A0 ; get the handle <C835/20Feb87> DAF
MOVE.L (A0),A0 ; get the pointer in A0 <C835/20Feb87> DAF
MOVE.L -12(A0,D7*4),D0 ; get the queue size (adjust for no 1 or 2 bit resolutions) <C835/20Feb87> DAF
MOVE.L D0,D3 ; hold it for a second
bsr NewHandleTempSysApp ;get memory <28Feb90 KON>
BNE MakeIErrLate ; if there was an error report it
;
; Got a handle. Check which heap it's in and lock it.
;
tst.w d1 ;d1=0 -> memory in temp heap <28Feb90 KON>
bne.s @notTemp1 ; <28Feb90 KON>
bset #QInTempBit, isTmpHandle(a6) ;Main ITable is in temp memory <28Feb90 KON>
@notTemp1
;
; want a ptr, so lock and deref handle
;
move.l a0,QHandle(a6) ;save QHandle <28Feb90 KON>
_HLock ;preserves a0 <28Feb90 KON>
move.l (a0),a0 ;deref it <28Feb90 KON>
MOVE.L A0,QStart(A6) ; save the starting addr in stack frame
ADD.L D3,A0 ; compute the addr of the queue end
MOVE.L A0,A5 ; keep the queue end here
; allocate BIG space on the heap for the ITable (to be shrunken and moved to sysheap later)
MOVEQ #1,D6 ; prime the register
LSL.L D7,D6 ; calculate 2^^res
MOVE.L D6,D5 ; save here for boundary setting
ADDQ #2,D6 ; increase by 2 for the boundary
MOVE.L D6,D0 ; get it in a working register
MULU.W D6,D0 ; square it
MULU.W D6,D0 ; cube it
ADD.L D0,D0 ; table size -> words
MOVE.L D0,TblSize(A6) ; save size of table
bsr NewHandleTempSysApp ;search everywhere for some memory <28Feb90 KON>
bne MakeIErr ;failed! <28Feb90 KON>
;
; Got memory, check which heap it's in
;
tst.w d1 ;d1=0 -> memory in temp heap <28Feb90 KON>
bne.s @notTemp2 ; <28Feb90 KON>
bset #ITableInTempBit, isTmpHandle(a6) ;Main ITable is in temp memory <28Feb90 KON>
@notTemp2
MOVE.L A0,TblH(A6) ; save temporary table
MOVE.L (A0),A0 ; dereference the handle
MOVE.L A0,A3 ; set up the table base ptr
; and mark the boundaries of the cube. (thanks, Ernie)
Boundary
MOVE.L #((Bound)++(Bound<<16)),D1 ; get BOUND.LONG <C666/22Jan87> DAF
MOVE.L #((UNDEF)++(UNDEF<<16)),D0 ; GET UNDEF.LONG <C666/22Jan87> DAF
; DO TOP EXCEPT ONE ROW
MOVE D6,D4 ;GET WIDTH OF TOP
MULU D6,D4 ;GET AREA OF TOP
SUB D6,D4 ;BACK UP ONE ROW
SUBQ #1,D4 ;MAKE 0 BASED
LSR #1,D4 ;CONVERT TO LONGS (moved conversion!!)
CLRTOP MOVE.L D1,(A0)+ ;SET TOP TO BOUND
DBRA D4,CLRTOP ;=>UNTIL DONE
; FOR EACH MIDDLE SLAB, SET 2 ROWS TO BOUND
; THEN ONE LONG OF BOUND FOLLOWED BY WIDTH/2 LONGS OF UNDEF
SUB.L #2,A0 ;SO RIGHT/LEFT EDGES IN SAME LONG
MOVE D5,D4 ;GET NUMBER OF MIDDLE SLABS TO DO
SUBQ #1,D4 ;MAKE 0 BASED
CLRSLAB
MOVE.L D6,D3 ;DO 2 BOUND ROWS
SUBQ #1,D3 ; and adjust counter
TWOROWS MOVE.L D1,(A0)+ ;SET TO BOUND
DBRA D3,TWOROWS ;=>UNTIL DONE
MOVE.L D5,D2 ; get the number of rows in a layer
SUBQ #1,D2 ; convert to counter
ClrLayer
MOVE.L D1,(A0)+ ;PREVIOUS RIGHT, NEXT LEFT = BOUND
MOVE D5,D3 ;INNER ROW = UNDEF
LSR #1,D3 ; convert to long
SUBQ #1,D3 ; make this zero based, too
CLRROW MOVE.L D0,(A0)+ ;SET TO UNDEF
DBRA D3,CLRROW ;=>UNTIL DONE
DBRA D2,ClrLayer ;do each row of a layer
DBRA D4,CLRSLAB ;=>DO NEXT SLAB
; DO BOTTOM PLUS ONE ROW PLUS ONE WORD
MOVE D1,(A0)+ ;DO THE EXTRA WORD
MOVE D6,D4 ;GET WIDTH OF BOTTOM
MULU D6,D4 ;GET AREA OF BOTTOM
ADD.L D6,D4 ;ADD ONE ROW
SUBQ #1,D4 ;adjust for counter
LSR #1,D4 ;CONVERT TO LONGS (moved conversion!!)
CLRBOT MOVE.L D1,(A0)+ ;SET BOTTOM TO BOUND
DBRA D4,CLRBOT ;=>UNTIL DONE
; Time to queue the seed colors. First, make some lookup tables for the
; rgb components. This is necessary, since the "big" cube is (2^^n)+2
; in size, and the 3 indices can't be shifted and ORed together. These
; lookup tables are word sized, and looked up with a byte index. Each
; entry is repeated 2^^(8-res) times, which saves truncating the values.
; Since these tables are fairly small, and the queue is large, we build
; them at the end of the queue's memory space.
Seed
; first, calculate the inner and outer loop counts
MOVE.L D6,D4 ; calculate 2^^res (outer loop count)
SUBQ #3,D4 ; and turn it into a counter
MOVE.L #8,D3 ; compute 2^^(8-res) (inner loop count)
SUB res(A6),D3 ; get 8-res
MOVEQ #1,D5 ; prime for a power of two calc
LSL D3,D5 ; and get power of 2 in D5
SUBQ #1,D5 ; and turn it into a counter
; next, calculate increments and starting values
MOVE.L D6,D7 ; copy cube edge size to D7
MULU D6,D7 ; square it (size^^2 is increment for red)
MOVE.L D7,D0 ; init red value to include
ADD.L D6,D0 ; offset to (1,1,1) of the big cube
ADDQ #1,D0 ;
MOVEQ #0,D1 ; init green value
MOVEQ #0,D2 ; init blue value
; now figure out where the table starts. It's easy since the table is a
; constant size = 256 * 4 words = 1024 words = $800 bytes
MOVE.L A5,A0 ; copy the queue end addr
SUB.L #$800,A0 ; table starts here
MOVE.L A0,A2 ; remember it here
; OK, let's get to it! To make lookup easy, we multiplex the three tables
; together so it looks like RGBxRGBxRGBx. The "x" value lets us get to
; these entries using SCALE*8
@1
MOVE.L D5,D3 ; set up inner loop counter
@2
MOVE.W D0,(A0)+ ; write red
MOVE.W D1,(A0)+ ; write green
MOVE.W D2,(A0)+ ; write blue
ADDQ #2,A0 ; skip a word
DBRA D3,@2 ; for some number of times
ADD.W D7,D0 ; add size^^2 to red value
ADD.W D6,D1 ; add size to green value
ADD.W #1,D2 ; add one to blue value
DBRA D4,@1
;
; Queue the seed colors, marking their positional value in the color
; table in the big cube (don't use the colorSpec.index field!!)
;
MOVE.L QStart(A6),A4 ; initialize the queue insertion point to the beginning
ADDQ #2,A4 ; bump the start by a little
MOVE.L ([ITabH,A6]),A1 ; get a pointer to the colorTable
ADD.L InfoOffset(A6),A1 ; bump the pointer past the big table to the info stuff
CLR.W ITabHidden(A1) ; no hidden entries yet
CLR.W ITabReserved(A1) ; no extra fields yet
CLR.W ITabFlags(A1) ; not a gray ITab <BAL 16Mar89>
;
; Black and white's index values have special significance to QuickDraw in old grafPorts.
; By default, they are the first and last colors in the colortable. We queue them
; first so that they will never be overridden by identical colors in the interior of the
; colorTable. If B&W are not in their normal positions, old grafports will look funny
; anyway, so we don't need to check. D5 has the colorTable index to queue.
; <C751/03Feb87> DAF - Queuing order changed (search for *&*& to see end of change)
MOVE.L ([CTabH,A6]),A0 ; get a pointer to the colorTable
MOVEQ #0,D5 ; the first element is normally white (clr top half of D5, too)
BSR.S QUtil ; queue it
MOVE.W CTSize(A0),D5 ; the last element is normally black
BSR.S QUtil ; queue it
;
; order doesn't matter for the remaining colors. clut=8 has best results if we seed
; moving forward so let's do it that way.
;
MOVE.L D5,D4 ; copy total # of color (and cleared hi word)
SUBQ #2,D4 ; this is the number of colors remaining
BLE.S QVille ; if zero or negative, all done
MOVEQ #1,D5 ; start at color #1 (zero based)
@TheRestOfUs ; a temporary label for the rest of us
BSR.S QUtil ; queue it
ADDQ #1,D5 ; advance to next
DBRA D4,@TheRestOfUs ; and loop til done
BRA.S QVille ; and continue
;
; here's an inline queuing utility. This allows us to queue in any order, but particularily
; we can try to queue black and white first, to make sure that they are in the inverse
; table even though, by default they are at opposite ends of the colorTable. It's inline
; so it can be a short branch around it.
;
QUtil
BTST #ReserveBit,CTTable+value(A0,D5*8) ; is this color reserved? <C695/26Jan87> DAF
BNE.S @5 ; if so, don't queue <C695/26Jan87> DAF
MOVEQ #0,D0 ; clear the index register
MOVEQ #0,D1 ; init the lookup register
MOVE.B CTTable+rgb+red(A0,D5*8),D0 ; get the HI BYTE of red value
MOVE.W 0(A2,D0*8),D1 ; get the adjusted red value
MOVE.B CTTable+rgb+green(A0,D5*8),D0 ; get the HI BYTE of green value
ADD.W 2(A2,D0*8),D1 ; add the adjusted green value
MOVE.B CTTable+rgb+blue(A0,D5*8),D0 ; get the HI BYTE of blue value
ADD.W 4(A2,D0*8),D1 ; add the adjusted blue value
MOVE.W (A3,D1.L*2),D2 ; fetch the current value
BMI.B @4 ; if Undef (<0) then just use it
MOVE.B ITabInfo(A1,D2),ITabInfo(A1,D5) ; current.link := old.link
MOVE.B D5,ITabInfo(A1,D2) ; old.link := current
ADDQ.W #1,ITabHidden(A1) ; bump the number of hidden entries
BRA.S @5 ; branch to end of loop <C751/03Jan87> DAF
@4 MOVE.B D5,ITabInfo(A1,D5) ; make it self-referential
MOVE.W D5,(A3,D1.L*2) ; put the color in the cube
QUEUE D1,#0 ; queue the displacement
@5 ; <C695/26Jan87> DAF
RTS ; and return
;*&*& end of <C751/03Feb87> DAF
;
; Now it's time to propagate the seed values throughout the
; cube. The procedure is fairly straightforward- dequeue an element
; from the queue, then mark and queue its six neighbors until the
; cube is full. D6 still has the cube edge size (green delta),
; and D7 still has the size of a plane (red delta).
;
QVille
MOVE.L QStart(A6),A1 ; set the removal ptr to the 1st valid entry
ADDQ.L #2,A1 ; bump the end up to match the first entry
MOVEQ #1,D5 ; set up the blue delta
BRA @7 ; jump to end of loop (save 1 inst)
@1
LEA (A3,D1.L*2),A0 ; get the address of the queued element
MOVE.W (A0),D4 ; get the color value in this position (note that hi bit is set {that's good!})
BTST #7,(A0,D5.L*2) ; check the next blue
BEQ.S @2 ; if nonzero, then skip it
MOVE.W D4,(A0,D5.L*2) ; mark it as taken
QUEUE D1,D5 ; and queue the index
@2
NEG.L D5
BTST #7,(A0,D5.L*2) ; check the alternate blue
BEQ.S @3 ; if nonzero, then skip it
MOVE.W D4,(A0,D5.L*2) ; mark it as taken
QUEUE D1,D5 ; and queue the index
@3
BTST #7,(A0,D6.L*2) ; check the next green
BEQ.S @4 ; if nonzero, then skip it
MOVE.W D4,(A0,D6.L*2) ; mark it as taken
QUEUE D1,D6 ; and queue the index
@4
NEG.L D6
BTST #7,(A0,D6.L*2) ; check the alternate green
BEQ.S @5 ; if nonzero, then skip it
MOVE.W D4,(A0,D6.L*2) ; mark it as taken
QUEUE D1,D6 ; and queue the index
@5
BTST #7,(A0,D7.L*2) ; check the next red
BEQ.S @6 ; if nonzero, then skip it
MOVE.W D4,(A0,D7.L*2) ; mark it as taken
QUEUE D1,D7 ; and queue the index
@6
NEG.L D7
BTST #7,(A0,D7.L*2) ; check the alternate red
BEQ.S @7 ; if neg, then skip it
MOVE.W D4,(A0,D7.L*2) ; mark it as taken
QUEUE D1,D7 ; and queue the index
MOVEQ #0,D1 ; clear the hi half of the offset register
@7 DEQUEUE D1 ; pull a queue element
BNE @1 ; if the new one is zero, then done (0,0,0 is a boundary and never queued)
;
; the iLUT is now built. Compress it down to a byte table and resize the handle
;
Collapse
MOVE.L ITabH(A6),A0 ; get the ITable handle
MOVE.L (A0),A0 ; get pointer to ITable
MOVE.L ([CTabH,A6]),A2 ; get a pointer to the colortable <C239> DAF
MOVE.L CTSeed(A2),(A0)+ ; get the color table's seed value (itabSeed)
MOVE RES(A6),(A0)+ ; write out resolution (itabRes)
MOVE.L TblSize(A6),D0 ; get the cube size
LSR.L #1,D0 ; divide by 2 to get entry count in words
SUBQ #1,D0 ; and convert to counter for DBRA
MOVE.L TblH(A6),A2 ; get the cube handle
MOVE.L (A2),A2 ; get the cube pointer
@1 MOVE.W (A2)+,D1 ; get an element of the expanded table
CMP.W #BOUND,D1 ; is it a boundary cell?
BEQ.S @2 ; if so, then skip it
MOVE.B D1,(A0)+ ; if not, then write byte in final table
@2 DBRA D0,@1 ; loop through entire cube
MOVE.L TblH(A6),A0 ; get the temporary handle
; from QDciPatchROM.a MakeITable patch <sm 6/9/92>stb
btst #ITableInTempBit, isTmpHandle(a6) ;is handle in temp memory <28Feb90 KON>
beq.s @notTmp ; no, use normal dispose <2.2> BAL
_DisposeTempBuffer ; bag it <2.2> BAL
bra.s @allGone ; continue <2.2> BAL
@notTmp _DisposHandle ; release it
@allGone
;
; dispose of the memory for the Queue
;
DisposeQ ; <24Apr87> DAF
MOVE.L QHandle(A6),A0 ; release the queue <28Feb90 KON>
btst #QInTempBit, isTmpHandle(a6) ;is Queue in temp memory <28Feb90 KON>
beq.s @QnotTmp ; no, use normal dispose <28Feb90 KON>
_DisposeTempBuffer ; bag it <28Feb90 KON>
bra.s @QallGone ; continue <28Feb90 KON>
@QnotTmp _DisposHandle ; release it <28Feb90 KON>
@QallGone ; <28Feb90 KON>
MITDone ; <C695/26Jan87> DAF
; MOVE.L SvZone(A6),theZone ; always restore the zone (needed for error exits) <BAL>
MOVEM.L (SP)+,A2-A5/D3-D7 ; restore registers
UNLK A6 ; bag the stack frame
RTD #ParamSize ; flush parameters and return home <C733/02Feb87> DAF
MakeIErr ; <24Apr87> DAF
MOVE.W #CTempMemErr,QDErr ; report a table allocation error
bra.s DisposeQ
MakeIErrLate
MOVE.W #CTempMemErr,QDErr ; report a table allocation error
BRA.S MITDone
;----------------- Subroutine to hunt for memory -----------------------------
; from QDciPatchROM.a <sm 6/9/92>stb
NewHandleTempSysApp
;
; Called with requested size in d0. Routine first tries to get memory first in
; multifinder temp memory, then sys heap, then app heap. If memory found in
; temp memory, d1 returns 0, otherwise d1 is 1.
;
; Returns with: d0 error, 0=noErr
; a0 handle if no error
;
; Try temp memory if multifinder exists
;
move.l d0, -(sp) ;save requested size
moveq #0, d1 ;assume temp memory
_NewTempHandle ;look for it in temp memory
cmp.l (sp),d0 ;is it the size we requested?
beq.s @GotMem ;yes, it's big enough
_DisposeTempBuffer ;A0 already has handle of wrong size
;
; Try sys memory
;
@noMF
moveq #1, d1 ;not temp memory
move.l (sp),d0
_NewHandle ,sys
beq.s @GotMem
;
; Try app memory if zone different from system zone
;
move.l theZone,d0
cmp.l sysZone, d0 ;have we already tried this zone?
beq.s @Memoryerr ;don't try it again
move.l (sp),d0
_NewHandle
bne.s @MemoryErr ;couldn't find the memory anywhere
@GotMem
moveq #0,d0 ;signal noErr
@MemoryErr
addq #4,sp ;remove requested memory size
tst.w d0 ;set condition codes
rts
MakeGrayITab
;-----------------------------------------------------------------------------
;
; MakeGrayITab
;
; At his point we know that all the clut entries are grays.
;
; First allocate a word-sized luminosity table on the stack and fill
; it with the appropriate index for each level by a seed fill method.
; Then compact the luminosity table into the ITInfoTable at the end of the ITab.
;
; Finally fill the ITab out with the appropriate index for each luminosity
; mapped position.
;
;PARAMSIZE EQU 10 ; total bytes of params
;CTabH EQU PARAMSIZE+8-4 ; Color table handle
;ITabH EQU CTabH-4 ; ITable handle
;RES EQU ITabH-2 ; entry size
;
;QStart EQU -4 ; pointer to the queue
;SvZone EQU QStart-4 ; save the current zone
;TblH EQU SvZone-4 ; copy of our temp ITable
;TblSize EQU TblH-4 ; size of our temp ITable
;InfoOffset EQU TblSize-4 ; offset to ITInfoTable from ITabH
;VARSIZE EQU InfoOffset
; Allocate and initialize table on stack
moveq #-1,d0 ; initializer for table
moveq #63,d1 ; # of double longs-1 in table
@1 move.l d0,-(sp) ; init 2 entries
move.l d0,-(sp) ; init 2 entries
dbra d1,@1
; Seed table with clut entries
clr.w 510(sp) ; seed white to guarantee last entry
move.w #255,(sp) ; seed black to guarantee 1st entry
move.l CTabH(a6),a0 ;
move.l (a0),a0 ; point at CLUT
move.w ctSize(a0),d0 ; get # entries -1
moveq #0,d2 ; clear out high end of word
@nxtEntry
move.w d0,d1 ; assume entry = index
btst #ReserveBit,ctTable+value(a0,d0*8)
bne.s @skip ; ignore reserved entries
; tst.w TransIndex(a0) ; look for flag in transIndex ASSUME DEVICE CLUT
; bmi.s @UseIndex ; => flag set, use index <BAL 29Mar89>
; move.w ctTable+value(a0,d0*8),d1 ; get value of current entry FUNG'S A HOSER
@UseIndex
move.b ctTable+rgb+red(a0,d0*8),d2 ; get luminance=red
move.w d1,(sp,d2*2) ; put pixel value in luminace table
@skip dbra d0,@nxtEntry ; => repeat until done
; Repeatedly smear right and then left one position until no changes in table
move.l a7,a1 ;
add.w #512,a1 ; set up limit pointer
@smear
moveq #0,d1 ; clear changed flag
lea 2(a7),a0 ; point at second entry
@right cmp.l a0,a1 ; reached end of table yet?
ble.s @end
tst.w (a0)+ ; is this entry occupied?
bpl.s @right ; yes, keep going
move.w -4(a0),-2(a0) ; no, smear right
addq #2,a0 ; don't smear more than one position
st d1 ; set changed flag
bra.s @right
@end subq #2,a0 ; stay inside last entry
@left cmp.l a0,a7 ; reached beginning of table yet?
bge.s @doneSmear
tst.w -(a0) ; is this entry occupied?
bpl.s @left ; yes, keep going
move.w 2(a0),(a0) ; no, smear left
subq #2,a0 ; don't smear more than one position
st d1 ; set changed flag
bra.s @left
@doneSmear
tst d1 ; were there any changes?
bne.s @smear ; yes, smear some more
; Now compress the table into the ITInfoTable and discard the stack version.
move.l ITabH(a6),a1 ;
move.l (a1),a1 ;
move.l ([CTabH,a6]),a2 ; get a pointer to the colortable
move.l CTSeed(a2),iTabSeed(a1) ; get the color table's seed value
move RES(a6),iTabRes(a1) ; write out resolution
add.l InfoOffset(a6),a1 ; point at ITInfoTable
bset #15,iTabFlags(a1) ; set grayITab flag
move.w #255,d0 ; get table size
lea ITabLuma(a1),a3 ; point at luma table
@copy move.b 1(sp,d0*2),d1 ; get index
move.b d1,ITabInfo(a1,d0) ; copy into ITInfoTable
move.b ctTable+rgb+red(a2,d1*8),(a3,d0) ; get actual luminance=red for dither error table
dbra d0,@copy
add.w #512,sp ; discard temp table
; Now fill out the ITab with luminance mapped index values at each location.
MOVE.L ([ITabH,a6]),A0 ; get the iTable's master pointer
MOVEQ #1,D0 ; prime the register again <BAL 16Mar89>
MOVE ITabRes(A0),D2 ; get the inverse table resolution (and Bit-field width)
LSL.L D2,D0 ; calculate 2^res
subq #1,d0 ; make it zero based for dbra
LEA ITTable(A0),A0 ; point us at the ITab data
lea ITabInfo(a1),a1 ; bump past header
move #2*256,d4 ; start with max blue contribution
lsr.w d2,d4 ; divide by # of steps
move #9*256,d5 ; start with max green contribution
lsr.w d2,d5 ; divide by # of steps
sub #2*256,d5 ; adjust for reverse blue bump
move #5*256,d6 ; start with max red contribution
lsr.w d2,d6 ; divide by # of steps
sub #9*256,d6 ; adjust for reverse green bump
;-------------------------------------------------------
; a0 = ITTable d0 = 2^iTabRes
; a1 = ITabInfo d1 = red looper
; a2 = cur luma d2 = green looper
; a3 = d3 = blue looper
; a4 = d4 = blue bump
; a5 = d5 = green bump - max blue
; a6 = locals d6 = red bump - max green
; a7 = d7 = scratch
;-------------------------------------------------------
sub.l a2,a2 ; init composite luminance
move.w d0,d1 ; init red position
@red move.w d0,d2 ; init green position
@green move.w d0,d3 ; init blue position
@blue move.w a2,d7 ; make a copy
lsr.w #4,d7 ; normalize luminance
move.b (a1,d7),(a0)+ ; store index in table
add d4,a2 ; bump in blue
dbra d3,@blue
add d5,a2 ; bump back to zero blue coordinate and increment green
dbra d2,@green
add d6,a2 ; bump back to zero green coordinate
dbra d1,@red
; bra MITDone ; all done
rts
;-----------------------------------------------------------------------------
;
; function ITabMatch ( myColor : RGBColor; var MatchPos : longint ) : boolean;
;
; This procedure takes an RGBColor and finds the best match
; to the .rgb field by lookup in the inverse table. The resultant
; index value is extended to a long and returned as the result.
; As the default routine, it does not look at the CDID field and
; always returns a result. It uses the linked list at the end of the
; ILUT to find and return "hidden" colors, based on a simple best fit
; calculation.
;
ITabMatch PROC EXPORT
PARAMSIZE EQU 10 ; total bytes of params
Result EQU PARAMSIZE+8-2
MyColor EQU Result-4
MatchPos EQU MyColor-4
Best EQU -2 ; keeps track of our index during hidden searches
BestVal EQU Best-2 ; keeps track of the best value while searching
EndLink EQU BestVal-2 ; the self-referential link that signals stop
ITabInfoPtr EQU EndLink-4 ; pointer to hidden colors, etc
VARSIZE EQU ITabInfoPtr
LINK A6,#VARSIZE ; set up a stack frame
MOVE.L A2,-(SP) ; save a register <C835/20Feb87> DAF
CLR.B Result(A6) ; assume boolean false
MOVE.L ([theGDevice]),A2 ; get a pointer to the current device
MOVE.L ([GDPMap,A2]),A1 ; get pixMap's handle
MOVE.L PMTable(A1),A0 ; get the device colorTable's handle
MOVE.L ([A0],CTSeed),D1 ; get a pointer to the device colortable
MOVE.L ([GDITable,A2]),D0 ; get the Itable's master pointer
CMP.L (ITabSeed,ZA0,D0.L),D1 ; has the colortable changed?
BEQ.S @1 ; if equal, then the iTable is OK
; if table is not up to date, build a new one
MOVE.L A0,-(SP) ; push theGDevice's color table handle
MOVE.L GDITable(A2),-(SP) ; push theGDevice's current iTabHandle
MOVE.W GDResPref(A2),-(SP) ; push the preferred iTableResolution
_MakeITable ; make a new table
; TST.W QDErr ; was this successful? <2.2> BAL
; BNE MtchEnd ; nope, so quit <2.2> BAL
MOVE.L ([theGDevice]),A2 ; redereference in case it moved <BAL 31Mar89>
MOVE.L ([GDITable,A2]),D0 ; get the iTable's master pointer
@1 MOVE.L D0,A0 ; and get a pointer to the ITab
MOVEQ #1,D0 ; prime the register again <BAL 16Mar89>
MOVE ITabRes(A0),D2 ; get the inverse table resolution (and Bit-field width)
LSL.L D2,D0 ; calculate 2^^res
LSL.L D2,D0 ; square it
LSL.L D2,D0 ; cube it
LEA ITTable(A0,D0.L),A1 ; point us at the ITabInfo
move.l a1,ITabInfoPtr(a6) ; save for later
tst.w iTabFlags(a1) ; is this a grayITab? <BAL 16Mar89>
bpl.s @notGray
; Now we know that all matchable clut entries are grays so simply compute luminance
; of input RBG and return index from 256 entry luminance table at end of the grayITab.
move.l myColor(a6),a0 ; get a pointer to the RGBColor
lea red(a0),a0 ; point at red cmp
moveq #0,d0 ; clear out high end
moveq #0,d1 ; clear out high end
moveq #0,d2 ; clear out high end
move.w (a0)+,d0 ; get the red component
move.w (a0)+,d1 ; get the green component
move.w (a0),d2 ; get the blue component
; Compute Luminance = ((((((r+g)/2)+b)/2+r)/2)+g)/2
move.l d1,a0 ; copy green
add.l d0,d1
lsr.l #1,d1
add.l d2,d1
lsr.l #1,d1
add.l d0,d1
lsr.l #1,d1
add.l a0,d1
lsr.l #1,d1
lsr.l #8,d1 ; make into byte value
move.b ITabInfo(A1,D1),D1 ; pick up index for this luminance
bra FoundIt ; => D1 has the answer
@notGray
MOVE ITabRes(A0),D2 ; get the inverse table resolution (and Bit-field width)
MOVE.L myColor(A6),A1 ; get a pointer to the RGBColor
BFEXTU red(A1){0:D2},D0 ; get the red component (BFEXTU zero extends)
LSL.L D2,D0 ; and shift it over res bits
BFEXTU green(A1){0:D2},D1 ; get the green component
OR.L D1,D0 ; put them together
LSL.L D2,D0 ; shift over again
BFEXTU blue(A1){0:D2},D1 ; get the blue component
OR.L D1,D0 ; and here's the completed index
; BFEXTU clears high 3 bytes of D1
MOVE.B ITTable(A0,D0),D1 ; get the index value
; Now we have the index, but we may not have the best match it can offer. See if
; it is self referential within the ITabInfo table, in which case it is probably the best
move.l ITabInfoPtr(a6),a1 ; point us at the ITabInfo <BAL 16Mar89>
CMP.B ITabInfo(A1,D1),D1 ; is this entry self referential?
BEQ.S FoundIt ; => D1 has the answer
; Where we keep some stuff:
; A0 - pointer to target RGBColor
; A1 - pointer to ITabInfo
; A2 - pointer to color table of current device
; D0 - calculates and holds the "distance"
; D1 - best index found
; D2 - used to calculate difference
MOVE.L myColor(A6),A0 ; get a pointer to the RGBColor
MOVE.L ([theGDevice]),A2 ; get the current device pointer
MOVE.L ([GDPMap,A2]),A2 ; get the device pixelmap pointer
MOVE.L ([pmTable,A2]),A2 ; point to the color table
MOVE.W D1,Best(A6) ; save current index - high byte is 0
MOVE.W D1,EndLink(A6) ; terminate when Current.Link = EndLink
MOVE.W #$7FFF,BestVal(A6) ; BestVal := $7FFF
; Okay, we have to look through the hidden values until we find the best match. This is a
; crude and simple search - we estimate the "distance" between our target and a hidden value
; based upon max(abs(∆Red),max(abs(∆Blue),abs(∆Green))). We select the index which has the minimum
; "distance", stopping early if we find an exact match.
Repeatr MOVE.W CTTable+rgb+red(A2,D1.W*8),D0 ; get red value of current index
SUB.W Red(A0),D0 ; subtract target red
BPL.S @1 ; make it positive
NEG D0 ; like so
@1 MOVE.W CTTable+rgb+green(A2,D1.W*8),D2 ; get green value of current index
SUB.W Green(A0),D2 ; subtract target green
BPL.S @2 ; make it positive
NEG D2 ; like so
@2 CMP.W D2,D0 ; select D0 := max(D2,D0)
BGE.S @3
MOVE.W D2,D0
@3 MOVE.W CTTable+rgb+blue(A2,D1.W*8),D2
SUB.W Blue(A0),D2
BPL.S @4
NEG D2
@4 CMP.W D2,D0
BGE.S @5
MOVE.W D2,D0
@5 TST.W D0 ; check result of our calculations
BEQ.S FoundIt ; D1 has the best match
CMP.W BestVal(A6),D0
BGE.S NotBest
; Set BestVal to the newly calculated match and update BestIndex
MOVE.W D0,BestVal(A6) ; copy new best value into holder
MOVE.W D1,Best(A6) ; copy current index into result
NotBest MOVE.B ITabInfo(A1,D1.W),D1 ; get the next link - high byte still 0
CMP.W EndLink(A6),D1 ; are we done?
BNE.S Repeatr
MOVE.W Best(A6),D1 ; grab the best match into D1
FoundIt MOVE.L MatchPos(A6),A0 ; get pointer to index result
EXT.L D1 ; make sure the upper word is clear
MOVE.L D1,(A0) ; write result
MOVE.B #1,Result(A6) ; and return boolean true
MtchEnd MOVE.L (SP)+,A2 ; restore register (was 2) <C835/20Feb87> DAF
UNLK A6 ; release stack frame
RTD #8 ; and go home
ColorThing2Index PROC EXPORT ; <BAL/dvb 23Feb89>
EXPORT Color2Index
;
;
; function ColorThing2Index ( myThing : ColorThing ) : longint;
;
; This procedure takes an RGB colorSpec-like thing and returns
; the appropriate pixel value for the current GDevice (despite how much I
; hate the concept of THEGDevice damn it!). But atleast we can share code.
;
; ColorThing format
colorSpace equ 0 ;[byte] 0=RGB, 1=palette index, 2=?
ctFiller equ colorSpace+1 ;[byte] reserved for clut compatibility
colorData equ ctFiller+1 ;actual color stuff, 0->48bit RGB, 1->16bit palette index
result EQU 12 ; longword result
myThing EQU 8 ; pointer to colorThing
retAddr EQU 4 ; return address
LongRes EQU -4 ; space for a longint return
FrameSize EQU LongRes ;
LINK A6,#FrameSize ;
clr.l -(sp) ; make room for result
move.l myThing(a6),a0 ; get thing ptr
move.w (a0)+,-(sp) ; push palette index
move.l a0,myThing(a6) ; set to RGB ptr for color2Index
moveq #0,d0 ; Entry2Index selector
; dc.w $aaa2 ; ask the brink
jsr ([$e00+(4*$2a2)]) ; ask the brink (faster)
move.l (sp)+,result(a6) ; get the answer
move.w qderr,d0 ; is it real?
bne.s c2iShare
UNLK A6 ; release stack frame
RTD #4 ; return and dealloc
;
; function Color2Index ( myColor : RGBColor ) : longint;
;
; This procedure takes an RGB color specification and finds it's best
; match using the search rule chain. The resultant index value is
; returned right-justified in the longword result. Note that direct
; mapping devices MUST have a searchProc.
;
Color2Index ;PROC EXPORT ; interface modified <C491/06Dec86> DAF
;result EQU 12 ; longword result <C601/07Jan87> DAF
MyColor EQU 8 ; pointer to rgbColor <C601/07Jan87> DAF
;retAddr EQU 4 ; return address <C601/07Jan87> DAF
;LongRes EQU -4 ; space for a longint return <C601/07Jan87> DAF
;FrameSize EQU LongRes ;
LINK A6,#FrameSize ; <C601/07Jan87> DAF
c2iShare
MOVE.L A2,-(SP) ; save a register <C491/06Dec86> DAF
; CLR.W QDErr ; clear the error register <1.9>
MOVE.L ([theGDevice]),A2 ; get a pointer to the device port
if 0 then
MOVE.L GDSearchProc(A2),D0 ; get the head of the search chain
@1
BEQ.S DefRule ; if NIL, then apply default rule
MOVE.L D0,A2 ; save the search element handle <C666/22Jan87> DAF
MOVE.L D0,A0 ; and set up for HLock <C666/22Jan87> DAF
_HLock ; lock the search element (so A2 will be valid after searchProc) <C666/22Jan87> DAF
SUBQ #2,SP ; make room for boolean result <C601/07Jan87> DAF
MOVE.L MyColor(A6),-(SP) ; push RGBColor pointer <C601/07Jan87> DAF
PEA LongRes(A6) ; push pointer to placeholder <C601/07Jan87> DAF
MOVE.L (A2),A0 ; get pointer to search element <C666/22Jan87> DAF
MOVE.L SrchProc(A0),A0 ; get the searchProc address <C666/22Jan87> DAF
JSR (A0) ; execute routine <C491/06Dec86> DAF
MOVE.L A2,A0 ; unlock the search element now <C666/22Jan87> DAF
_HUnlock ; <C666/22Jan87> DAF
TST.B (SP)+ ; test the boolean result <C601/07Jan87> DAF
BNE.S Found1 ; if result = TRUE then quit <C601/07Jan87> DAF
MOVE.L (A2),A0 ; get pointer to this search element again <C666/22Jan87> DAF
MOVE.L NxtSrch(A0),D0 ; get pointer to next <C666/22Jan87> DAF
BRA.S @1 ;
endif
;-----------Optimization <20AUG90 KON> Hopefully it still works--------------------------------
MOVE.L GDSearchProc(A2),a2 ; get the head of the search chain <20AUG90 KON>
NxtProc
MOVE.L A2,D0 ; To work register <20AUG90 KON>
beq.s DefRule ; no search proc, or end of list <20AUG90 KON>
MOVE.L (A2),A0 ; get pointer to search element <C666/22Jan87> DAF
move.l NxtSrch(a0),a2 ; get handle to next search element <20AUG90 KON>
;
; Call search proc
;
SUBQ #2,SP ; make room for boolean result <C601/07Jan87> DAF
MOVE.L MyColor(A6),-(SP) ; push RGBColor pointer <C601/07Jan87> DAF
PEA LongRes(A6) ; push pointer to placeholder <C601/07Jan87> DAF
MOVE.L SrchProc(A0),A0 ; get the searchProc address <C666/22Jan87> DAF
JSR (A0) ; execute routine <C491/06Dec86> DAF
TST.B (SP)+ ; test the boolean result <C601/07Jan87> DAF
beq.s NxtProc ; not found, try next search proc <20AUG90 KON>
;-----------END <20AUG90 KON> -----------------------------------------------------------------
Found1
MOVE.L LongRes(A6),D0 ; get the longword index <C601/07Jan87> DAF
MOVE.L D0,result(A6) ; return result <C491/06Dec86> DAF
MOVE.L (SP)+,A2 ; restore saved register <C491/06Dec86> DAF
UNLK A6 ; release stack frame <C601/07Jan87> DAF
RTD #4 ; return and dealloc
DefRule
MOVE.L ([theGDevice]),A0 ; get a pointer to the device port <C777/12Feb87> DAF
CMP.W #DirectType,GDType(A0) ; if it is direct, don't call ITabMatch <C777/12Feb87> DAF
BEQ.S @DirectPix ; calc direct pixel value <C777/12Feb87> DAF
CLR.B -(SP) ; make room for function result <C583/02Jan87> DAF
MOVE.L myColor(A6),-(SP) ; push RGBColor pointer
PEA LongRes(A6) ; push pointer to index placeholder <C583/02Jan87> DAF
_ITabMatch ; call the default routine
TST.B (SP)+ ; test the boolean result <C491/06Dec86> DAF
;BNE.S GetIt ; if OK result, get index <C583/02Jan87> DAF
bra.s GetIt ; just get index anyway
@DirectPix
MOVE.L ([GDPMap,A0]),A1 ; get the device pixelmap pointer
move.w cmpSize(a1),d1 ; get cmp size <rgb/06Jul88> BAL
MOVE.L myColor(A6),A0 ; point to the color spec <RGB/19May88> DAF
moveq #0,d0 ; clear a register <rgb/06Jul88> BAL
MOVE.B red(A0),D0 ; get the red channel <RGB/19May88> DAF
LSL.L d1,D0 ; shift over <RGB/19May88> DAF
MOVE.B green(A0),D0 ; get the green channel <RGB/19May88> DAF
LSL.L d1,D0 ; shift again <RGB/19May88> DAF
MOVE.B blue(A0),D0 ; get the blue channel <RGB/19May88> DAF
neg.w d1
addq.w #8,d1 ; shift needed to right justify pixel
ble.s @noShift ; needed for cmpSize=10
lsr.l d1,d0
@noShift
MOVE.L D0,LongRes(A6) ; just for now! <RGB/19May88> DAF
GetIt BRA.S Found1 ; and return <C583/02Jan87> DAF
;
; procedure Index2Color ( index : longint; VAR myColor : RGBColor );
;
; This procedure takes an index value and returns the RGB
; components of this element of theGDPort^^.GDPMap.pmTable.
;
; as seen in QDciPatchROM.a <sm 6/9/92>stb
Index2Color PROC EXPORT
MOVE.L 8(SP),D0 ; get the index <C491/06Dec86> DAF
MOVE.L 4(SP),A0 ; get pointer to result RGB <C491/06Dec86> DAF
MOVE.L ([theGDevice]),A1 ; get the current device pointer
MOVE.L ([GDPMap,A1]),A1 ; get the device pixelmap pointer
cmp #16,pixelType(a1) ; is it a direct device? <BAL 06Jul88>
beq.s I2CDirect ; yes, no CLUT <BAL 06Jul88>
MOVE.L ([pmTable,A1]),A1 ; point to the color table
; CLR.W QDErr ; clear the error register <1.9>
MOVE.W ctSize(A1),D1 ; get ctSize <C491/06Dec86> DAF
CMP.W D1,D0 ; is index in range? <C491/06Dec86> DAF
BGT.S I2CErr ; nope, so quit <C491/06Dec86> DAF
MOVE.W CTTable+rgb+red(A1,D0.L*8),red(A0) ; move red <C491/06Dec86> DAF
MOVE.L CTTable+rgb+green(A1,D0.L*8),green(A0) ; move green & blue <C491/06Dec86> DAF
I2CDone
RTD #8 ; and return
I2CErr
MOVE.W #cRangeErr,QDErr ; set error code
BRA.S I2CDone ;
I2CDirect ; Handle 24bit/pixel direct devices <BAL 06Jul88>
moveq #8,d1 ; get handy constant
sub.w cmpSize(a1),d1 ; shift needed to left justify cmp
beq.s I2C24 ; cmpsize is 8 so go fast
;enter with a 16-bit source pixel in d0
lsl.l #3,d0 ;left align blue in lo byte
move.b d0,d1
lsl.l #5,d1 ;get 5 bits of blue
move.b d0,d1
lsl.l #5,d1 ;make into 10 bits of blue
move.b d0,d1
lsl.l #5,d1 ;make into 15 bits of blue
move.b d0,d1
lsr.l #7,d1 ;get a word of blue
MOVE.w d1,blue(a0) ;store out in color spec
lsr.l #5,d0 ;left align green in lo byte
move.b d0,d1
lsl.l #5,d1 ;get 5 bits of green
move.b d0,d1
lsl.l #5,d1 ;make into 10 bits of green
move.b d0,d1
lsl.l #5,d1 ;make into 15 bits of green
move.b d0,d1
lsr.l #7,d1 ;get a word of green
MOVE.w d1,green(a0) ;store out in color spec
lsr.l #5,d0 ;left align red in lo byte
move.b d0,d1
lsl.l #5,d1 ;get 5 bits of red
move.b d0,d1
lsl.l #5,d1 ;make into 10 bits of red
move.b d0,d1
lsl.l #5,d1 ;make into 15 bits of red
move.b d0,d1
lsr.l #7,d1 ;get a word of red
MOVE.w d1,red(a0) ;store out in color spec
if 0 then
lsl.l d1,d0 ; put cmp at high end of byte
move.w cmpSize(a1),d1 ; get distance to next cmp
move.b d0,d2 ; make a copy
lsl.w d1,d2 ; preserve cmpSize bits in high byte
move.b d0,d2 ; replicate cmpSize bits
lsr.w d1,d2 ; make into a byte
move.b d2,blue(a0) ; set up high byte of blue result
move.b d2,blue+1(a0) ; set up low byte of blue result
move.w d0,d2 ; make a copy of cmpSize bits in high byte
lsr.l d1,d0 ; get next cmp in high end of lo byte
move.b d0,d2 ; replicate cmpSize bits
lsr.w d1,d2 ; make into a byte
move.b d2,green(a0) ; high green
move.b d2,green+1(a0) ; low green
move.w d0,d2 ; make a copy of cmpSize bits in high byte
lsr.l d1,d0 ; get next cmp in high end of lo byte
move.b d0,d2 ; replicate cmpSize bits
lsr.w d1,d2 ; make into a byte
move.b d2,red(a0) ; high red
move.b d2,red+1(a0) ; low red
endif
bra.s I2CDone
I2C24
move.b d0,blue(a0) ; set up high byte of blue result
move.b d0,blue+1(a0) ; set up low byte of blue result
lsr.w #8,d0 ; get green byte
move.b d0,green(a0) ; high green
move.b d0,green+1(a0) ; low green
swap d0 ; get red byte
move.b d0,red(a0) ; high red
move.b d0,red+1(a0) ; low red
bra.s I2CDone
;
; procedure InvertColor ( VAR myColor : RGBColor );
;
; This procedure takes an RGBColor, calculates its inverse using the current
; inverse rules, then updates the provided RGBColor. It only uses the
; compProc interface if the default is not called.
;
; has fix from QDciPatchROM.a where an offset was wrong because of a byte result <sm 6/9/92>stb
InvertColor PROC EXPORT
MOVE.L A2,-(SP) ; save a register <C601/07Jan87> DAF
MOVE.L ([theGDevice]),A2 ; get a pointer to the device port
MOVE.L GDCompProc(A2),D0 ; get the head of the complement chain
@1
BEQ.S DefComp ; if NIL, then apply default rule
MOVE.L D0,A2 ; save the pointer <C601/07Jan87> DAF
MOVE.L D0,A0 ; set up to lock this element <C666/22Jan87> DAF
_HLock ; lock it down so that A2 will be valid after the JSR <C666/22Jan87> DAF
CLR.B -(SP) ; room for a boolean result
MOVE.L 8+2(SP),-(SP) ; push the pointer to the color <26MAR90 KON>
MOVE.L (A0),A0 ; get the element pointer <C666/22Jan87> DAF
MOVE.L CompProc(A0),A0 ; get the complement proc ptr <C666/22Jan87> DAF
JSR (A0) ; execute routine
MOVE.L A2,A0 ; set up for HUnlock <C666/22Jan87> DAF
_HUnlock ; release the compElement <C666/22Jan87> DAF
TST.B (SP)+ ; test the result
BNE.S FoundComp ; if result = TRUE then quit
MOVE.L (A2),A0 ; get the compElement pointer again <C666/22Jan87> DAF
MOVE.L NxtComp(A0),D0 ; get pointer to next <C666/22Jan87> DAF
BRA.S @1 ;
FoundComp
MOVE.L (SP)+,A2 ; restore the register <C601/07Jan87> DAF
RTD #4 ; and go home
; the default procedure is VERY simple. It just gets the complement of each
; component. It always returns a sucessful result.
DefComp
MOVE.L 8(SP),A0 ; get pointer to RGBColor
NOT.W (A0)+ ; complement red
NOT.W (A0)+ ; complement green
NOT.W (A0) ; complement bleu, svp.
BRA.S FoundComp ; and it always works too.
;
; procedure RGBForeColor (Color : RGBColor);
;
; This routine takes an RGB triple and sets the current Graf- or CGrafPort
; fields so that drawing will take place with the best match of the
; requested color, using the current GDevice's color matching rules. The
; appropriate fields are set depending on portType
;
RGBForeColor PROC EXPORT
EXPORT RGBBackColor,RGB2OLD
MOVEQ #FGCOLOR,D0 ; get offset to index field
MOVEQ #RGBFgColor,D1 ; get offset to RGB field
SHARE MOVE.L 4(SP),A1 ; point at the RGB color
MOVE.L GRAFGLOBALS(A5),A0 ; get the QuickDraw globals pointer
MOVE.L THEPORT(A0),A0 ; point at the port
PEA 0(A0,D0) ; save pointer to the index field
TST PORTBITS+ROWBYTES(A0) ; is it a new port?
BMI.S NEWPORT ; => yes, set RGB components
JSR RGB2OLD ; else convert RGB to old color
BRA.S DONE ; => and return
; Palette manager patch rolled in <6Jun87 EHB>
; Flag to the Palette Manager whether it a foreground or a background call happened
NEWPORT MOVE.L GrafVars(A0),D2 ; get the GrafVars handle <6Jun87 EHB>
BEQ.S NoPM ; =>no grafVars, continue <6Jun87 EHB>
MOVE.L D2,A1 ; else get GrafVars handle <6Jun87 EHB>
MOVE.L (A1),A1 ; point to GrafVars <6Jun87 EHB>
MOVE PmFlags(A1),D2 ; get flags <6Jun87 EHB>
CMP #FgColor,D0 ; is this a foreground call? <6Jun87 EHB>
BNE.S NotFg ; no => clear PmBkBit <6Jun87 EHB>
BCLR #PmFgBit,D2 ; clear the foreground flag bit <6Jun87 EHB>
BRA.S Common ; reunite it <6Jun87 EHB>
NotFg BCLR #PmBkBit,D2 ; clear the background flag bit <6Jun87 EHB>
Common MOVE D2,PmFlags(A1) ; save the flags to GrafVars <6Jun87 EHB>
MOVE.L 8(SP),A1 ; restore the pointer to the RGBColor <6Jun87 EHB>
NoPM MOVE.L red(A1),red(A0,D1) ; copy red and green components to the port
MOVE.W blue(A1),blue(A0,D1) ; and blue too
; make an rgbColor on the stack
MOVE.L green(A1),-(SP) ; copy green and blue
MOVE.W red(A1),-(SP) ; copy red
SUBQ #4,SP ; make room for function return <C491/06Dec86> DAF
PEA 4(SP) ; push pointer to rgb <C491/06Dec86> DAF
_Color2Index ; convert it to an index
MOVE.L (SP)+,D0 ; get the index result <C491/06Dec86> DAF
ADDQ #6,SP ; get rid of the rgbColor <C491/06Dec86> DAF
DONE MOVE.L (SP)+,A0 ; get pointer to index field
MOVE.L D0,(A0) ; and set the index field
RTD #4 ; all done <C491/06Dec86> DAF
RGB2OLD
;-----------------------------------------------
;
; UTILITY TO CONVERT AN RGB (POINTED TO BY A1) VALUE
; TO AN OLD STYLE COLOR VALUE. RETURNS VALUE IN D0. CLOBBERS A0,D1
;
; USES HIGH BIT OF EACH COMPONENT TO SELECT RGB OFF (0) OR ON (1)
MOVEQ #0,D1 ; clear out D1
MOVE (A1)+,D1 ; get red
ADD.L D1,D1 ; get high bit
MOVE (A1)+,D1 ; get green
ADD.L D1,D1 ; get high bit
MOVE (A1)+,D1 ; get blue
ADD.L D1,D1 ; get high bit
SWAP D1 ; get RGB index
noBlue LEA MapTbl,A0 ; get translate table
MOVEQ #0,D0 ; clear out high word
MOVE 0(A0,D1*2),D0 ; convert to planar value
RTS ; => all done
; TABLE TO MAP FROM 3 BIT RGB TO OLD-STYLE COLOR INDICES
MapTBL DC.W blackColor ; RBG = 0,0,0 -> black
DC.W blueColor ; RBG = 0,0,1 -> blue
DC.W greenColor ; RBG = 0,1,0 -> green
DC.W cyanColor ; RBG = 0,1,1 -> cyan
DC.W redColor ; RBG = 1,0,0 -> red
DC.W magentaColor ; RBG = 1,0,1 -> magenta
DC.W yellowColor ; RBG = 1,1,0 -> yellow
DC.W whiteColor ; RBG = 1,1,1 -> white
;
; procedure RGBBackColor (Color : RGBColor);
;
; This routine takes an RGB triple and sets the current Graf- or CGrafPort
; fields so that drawing will take place with the best match of the
; requested color, using the current GDevice's color matching rules. The
; appropriate fields are set depending on portType.
;
RGBBackColor
MOVEQ #BKCOLOR,D0 ; get offset to the index field
MOVEQ #RGBBkColor,D1 ; get offset to RGB field
BRA.S SHARE ; => and use common code
;
; PROCEDURE GetForeColor (VAR Color: RGBColor);
;
; Return the RGB components of the current foreground color
; Works for old and new ports.
GetForeColor PROC EXPORT
EXPORT GetBackColor
MOVEQ #FGCOLOR,D0 ; get offset to the index field
MOVEQ #RGBFgColor,D1 ; get offset to RGB field
SHARE MOVE.L 4(SP),A1 ; point at the RGB color
MOVE.L GRAFGLOBALS(A5),A0 ; get the QuickDraw globals pointer
MOVE.L THEPORT(A0),A0 ; point at the port
TST PORTBITS+ROWBYTES(A0) ; is it a new port?
BPL.S GETOLD ; => no, set using planar values
MOVE.L red(A0,D1),red(A1) ; copy red and green components from the port
MOVE.W blue(A0,D1),blue(A1) ; and blue too
DONE MOVE.L (SP)+,A0 ; get the return address
ADDQ #4,SP ; get rid of the parameter
JMP (A0) ; and return
; USE CMYB BITS IN COLOR TO DERIVE PROPER RGB COMPONENTS
GETOLD MOVE.L (A0,D0),D0 ; get planar color from port
LSR #1,D0 ; CHECK FOR WHITE (I CMYB rgbw)
BCS.S @BLACK ; =>NOT WHITE
OR #$00E0,D0 ; ELSE SET WHITE BITS (CMY = 111)
@BLACK LSR #5,D0 ; SHIFT ICMY INTO LOW NIBBLE
AND #$7,D0 ; CLEAR ALL BUT CMY
MOVE.L QDColors,A0 ; GET DEFAULT COLORS
LEA 2(A0,D0*8),A0 ; point to proper entry
MOVE.L (A0)+,(A1)+ ; copy red, green
MOVE (A0)+,(A1)+ ; copy blue
BRA.S DONE ; => all done
;
; PROCEDURE GetBackColor (VAR Color: RGBColor);
;
; Return the RGB components of the current background color
; Works for old and new ports.
;
GetBackColor
MOVEQ #BKCOLOR,D0 ; get offset to the index field
MOVEQ #RGBBkColor,D1 ; get offset to RGB field
BRA.S SHARE ; and use common code
;
; function RealColor ( color : RGBColor ) : boolean;
;
; This call tests if the given RGBColor actually exists in the current
; device colortable. It is analogous to RealFont in the Font Manager.
; It tests if the best match to the provided color is actually in the
; device colortable rather than actually testing the color table elements.
;
RealColor FUNC EXPORT
result EQU 12
inCol EQU 8
I2CSpace EQU -6
LINK A6,#I2CSpace ; build a stack frame <C491/06Dec86> DAF
CLR.B result(A6) ; assume result false
SUBQ #4,SP ; make room for the function return <C491/06Dec86> DAF
MOVE.L inCol(A6),-(SP) ; push pointer to rgbColor <C491/06Dec86> DAF
_Color2Index ; find the index, leave result on stack <C491/06Dec86> DAF
PEA I2CSpace(A6) ; push pointer to rgbColor result <C491/06Dec86> DAF
_Index2Color ; get the device colorTable entry
MOVE.L ([theGDevice]),A0 ; get a pointer to the current device <C733/02Feb87> DAF
MOVE.L ([GDITable,A0]),A0 ; get the Itable's master pointer <C733/02Feb87> DAF
MOVE.W ITabRes(A0),D2 ; get the current iTable resolution <C733/02Feb87> DAF
BFEXTU ([inCol,A6]){0:D2},D0 ; get res hi bits of red input <C733/02Feb87> DAF
BFEXTU I2CSpace(A6){0:D2},D1 ; get res hi bits of red result <C733/02Feb87> DAF
CMP D0,D1 ; compare them <C733/02Feb87> DAF
BNE.S @0 ; if different then return FALSE <C733/02Feb87> DAF
BFEXTU ([inCol,A6],green){0:D2},D0 ; get res hi bits of grn input <C733/02Feb87> DAF
BFEXTU I2CSpace+green(A6){0:D2},D1 ; get res hi bits of grn result <C733/02Feb87> DAF
CMP D0,D1 ; compare them <C733/02Feb87> DAF
BNE.S @0 ; if different then return FALSE <C733/02Feb87> DAF
BFEXTU ([inCol,A6],blue){0:D2},D0 ; get res hi bits of blu input <C733/02Feb87> DAF
BFEXTU I2CSpace+blue(A6){0:D2},D1 ; get res hi bits of blu result <C733/02Feb87> DAF
CMP D0,D1 ; compare them <C733/02Feb87> DAF
BNE.S @0 ; if different then return FALSE <C733/02Feb87> DAF
MOVE.B #1,result(A6) ; the color exists, so set boolean TRUE
@0 UNLK A6 ; dump stack frame
RTD #4 ; and return <C491/06Dec86> DAF
;
; procedure SetEntries ( start,count : integer; aTable : ptr );
;
; This routine places the specified color into position index in the
; current device color table. The value field of this element is set to
; ownerID, which may include an owner ID number, as well as protect and
; reserve bits. If this value is zero, then the value is considered
; to be fair game for the system. After updating the GDevice data
; structures, the device's driver is called to actually change the
; lookup table.
;
SetEntries PROC EXPORT ; rewritten <C522/15Dec86> DAF
csc_SetEntries EQU 3 ; control call # for setEntries
Start EQU 14
Count EQU 12
Tbl EQU 8
SEPBlock EQU -csParam-4 ; parmBlock for control (32 bytes)
CParms EQU SEPBlock-8 ; control call parameters (8 bytes)
LinkSize EQU CParms
LINK A6,#LinkSize ; set up a stack frame
MOVEM.L A2/D3,-(SP) ; save some registers
; first, test to make sure the requested entries can be changed
MOVE.L ([theGDevice]),A0 ; get the master pointer to current device
MOVE.W GDID(A0),D2 ; get theGDevice's ownerID
CMP.W #CLUTType,GDType(A0) ; is this a changeable device?
BNE SEDevErr ; nope, so quit
; Mark QDSpare that the color environment has changed, but only if
; QD exists
TST.B QDExist ; is QD around?
BNE.S @noQDE ; no, skip this next
MOVE.L (A5),A2
BSET #3,QDSpare0(A2) ; Tell PMgrExit to do color cleaning
@noQDE
MOVE.L ([GDPMap,A0]),A0 ; get a pointer to the device pixmap
MOVE.L ([pmTable,A0]),A2 ; get a pointer to the device's color table
MOVE.W Count(A6),D1 ; get the count
MOVE.W Start(A6),D0 ; get the starting position
BMI.S IndexMode ; if minus, then index mode
SeqMode
ADD.W D1,D0 ; calc the last entry to change
CMP.W CTSize(A2),D0 ; compare to color table size <C751/03Feb87> DAF
BGT.S RangeErr ; if in legal range (≤), continue <C751/03Feb87> DAF
@0
BTST #protectBit,CTTable+value(A2,D0*8) ; test the protect bit <C751/03Feb87> DAF
BNE.S ProtError ; oh, oh. Can't changed a protected one!
BTST #ReserveBit,CTTable+value(A2,D0*8) ; test the reserve bit <C751/03Feb87> DAF
BEQ.S @1 ; if clear, then it can be changed <C751/03Feb87> DAF
CMP.B CTTable+value+1(A2,D0*8),D2 ; compare to current ClientID (byte only) <C751/03Feb87> DAF
BNE.S ProtError ; sorry, can't change someone else's <C751/03Feb87> DAF
@1
SUBQ #1,D0 ; back index up by one
DBRA D1,@0 ; loop back
BRA.S OKFine ; the request is valid
RangeErr
MOVE #cRangeErr,D0 ; if not, then return an error
BRA SEError ;
ProtError
MOVE #cProtectErr,D0 ;
BRA SEError
IndexMode ; test the .value fields in INDEX mode
MOVE.L Tbl(A6),A0 ; get addr of first request
@0
MOVE.W value(A0),D0 ; get the destination location from request array
AND.W #$00FF,D0 ; lo-byte only for index
CMP.W CTSize(A2),D0 ; is the request in range? <C835/20Feb87> DAF
BGT.S RangeErr ; nope, so quit <C835/20Feb87> DAF
BTST #protectBit,CTTable+value(A2,D0*8) ; test the protect bit <C751/03Feb87> DAF
BNE.S ProtError ; oh, oh. Can't changed a protected one!
BTST #ReserveBit,CTTable+value(A2,D0*8) ; test the reserve bit <C751/03Feb87> DAF
BEQ.S @1 ; if clear, then it can be changed <C751/03Feb87> DAF
CMP.B CTTable+value+1(A2,D0*8),D2 ; compare to current ClientID (byte only) <C751/03Feb87> DAF
BNE.S ProtError ; sorry, can't change someone else's <C751/03Feb87> DAF
@1
ADDQ #CTEntrySize,A0 ; move to next entry
DBRA D1,@0 ; reduce count
OKFine
MOVE.W Start(A6),CParms+csStart(A6) ; set up control parm block
MOVE.W Count(A6),CParms+csCount(A6) ;
MOVE.L Tbl(A6),CParms+csTable(A6) ;
; now build a parameter block for a control call (in stack frame)
MOVE.L #0,SEPBlock+ioCompletion(A6) ; no completion routine
MOVE.W #0,SEPBlock+ioVRefNum(A6) ; device not volume
MOVE.L ([theGDevice]),A1 ; get ptr to theGDevice
MOVE.W (A1),SEPBlock+ioRefNum(A6) ; copy refNum from theGDevice
MOVE.W #csc_SetEntries,SEPBlock+csCode(A6) ; control code for this call
LEA CParms(A6),A1 ; get addr of parms
MOVE.L A1,SEPBlock+csParam(A6) ; move addr of parms into block
; make a call to the device driver
LEA SEPBlock(A6),A0 ; get pointer to parmblock
_Control ,IMMED ; make a control call <C695/26Jan87> DAF
; test result and finish up
TST.W D0 ; test the result
BNE.S SEError
; put the RGBs into theGDevice's colortable. Copy the current ownerID into .value
; (wait until control call returns successfully!). D2 has GDID in it from above
MOVE.L Tbl(A6),A0 ; get the request array ptr
MOVE.W Count(A6),D0 ; get the number of entries to install
MOVE.W Start(A6),D1 ; get the starting position number
BMI.S InstIndex ; if minus, then INDEX mode
InstSeq
LEA CTTable(A2,D1*8),A1 ; get ptr to start position in sysColorTable
@0
ADDQ #1,A1 ; advance to lo half of value <C777/09Feb87> DAF
MOVE.B D2,(A1)+ ; set value field to ownerID <C777/09Feb87> DAF
MOVE.L (A0)+,D3 ; get request value (junk) and red
MOVE.W D3,(A1)+ ; set red
MOVE.L (A0)+,(A1)+ ; set green and blue
DBRA D0,@0 ; loop for all requests
BRA.S FinishUp ;
InstIndex
MOVE.W (A0)+,D3 ; get the insertion index (.value field)
MOVE.B D2,CTTable+value+1(A2,D3*8) ; set value field to the ownerID <C777/09Feb87> DAF
MOVE.W (A0)+,CTTable+rgb+red(A2,D3*8) ; set red
MOVE.L (A0)+,CTTable+rgb+green(A2,D3*8) ; set green and blue
DBRA D0,InstIndex ; loop for all entries
FinishUp
; update the CTSeed
CLR.L -(SP) ; make room for function return
_rGetCTSeed ; get the next seed <BAL 04Sep88>
MOVE.L (SP)+,CTSeed(A2) ; and put it in the table
; invalidate the cached fonts
MOVE.L MinusOne,lastSPExtra ; this marks them invalid <C777/12Feb87> DAF
SEDone
MOVEM.L (SP)+,A2/D3 ; restore saved registers
UNLK A6 ; dump stack frame
RTD #8
SEDevErr MOVE.W #cDevErr,D0 ; wrong device type error
SEError
MOVE.W D0,QDErr ; record the error code <C367/07Nov86> DAF
BRA.S SEDone ; and finish up <C367/07Nov86> DAF
;
; procedure RestoreEntries (srcTable:cTabHandle; DstTable:cTabHandle; var selection:requestList);
;
; RestoreEntries sets a selection of entries from srcTable into DstTable. The dstTable elements
; to be set are enumerated in selection (these values are offsets into the srcTable,
; not the contents of the value field). If a request is beyond the end of the dstTable,
; that position of the requestList is set to invalColReq, and is not installed into dstTable.
; This call does not observe the reserve and protect fields of entries in dstTable.
; If DstTable is NIL (or = to theGDevice's colortable), then srcTable is installed into
; theGDevice's colortable, and the CLUT is set to the new values. Note that srcTable and
; selection are assumed to have the same number of elements.
;
RestoreEntries PROC EXPORT
csc_SetEntries EQU 3 ; control call # for setEntries
; stack frame declarations
SrcT EQU 16
dstT EQU 12
RLst EQU 8
SEPBlock EQU -csParam-4 ; parmBlock for control (36 bytes)
CParms EQU SEPBlock-8 ; control call parameters (8 bytes)
LinkSize EQU CParms ; size of stack frame locals
LINK A6,#LinkSize ;
MOVEM.L A2/A3/D3,-(SP) ; save some registers
CLR.W QDErr ; clear error register
MOVE.L ([SrcT,A6]),A2 ; get source colortable ptr
MOVE.L RLst(A6),A1 ; get the request list ptr
MOVE.W ReqLSize(A1),D2 ; get the request list size
MOVE.L ([theGDevice]),A0 ; get a pointer to the current device
CMP.W #CLUTType,GDType(A0) ; is it a clut device?
BNE REDevErr ; nope, so report an error
MOVE.L ([GDPMap,A0]),A0 ; get pixMap's handle <C239> DAF
MOVE.L ([PMTable,A0]),A0 ; get a pointer to the device colortable <C239> DAF
MOVE.L ([dstT,A6]),A3 ; get destination colortable ptr in case it's OK
CMP.L A0,A3 ; does dest point to theGDevice's colortable?
BEQ.S @8 ; so do the control call
TST.L dstT(A6) ; is destination NIL?
BNE.S JustInstall ; if non-NIL, then just install the srcTbl
MOVE.L A0,A3 ; move the device colortable ptr to A3
@8
; if DstTbl was NIL or (ptr) equal, then dest is theGDevice's colortable...
; save the value fields of the srcTable on the stack
MOVEQ #0,D1 ; clear hi half of D0
MOVE.W D2,D1 ; make a copy of the srcTable size
ADDQ #1,D1 ; adjust from count to size
ASL #1,D1 ; times two for words
SUBA D1,SP ; make room for these values on stack
MOVE.W D2,D0 ; get # of value fields to move
@0
MOVE.W CTTable+value(A2,D0*8),(SP,D0*2) ; copy the values
DBRA D0,@0 ;
; now install the position fields into the srcTable
MOVE.W D2,D0 ; get # of value fields to move
@1
MOVE.W ReqLData(A1,D0*2),D3 ; get the target position
CMP.W CTSize(A3),D3 ; compare to the maximum for this destination
BGT LeakError ; if out of range, return error (Bruce wanted this)
MOVE.W D3,CTTable+value(A2,D0*8) ; write the request in the source table
DBRA D0,@1 ;
; at this point, the "bad" entries should be removed, but we can leave them
; for now since the driver will range test positions (and invalColReq >256).
; make a driver call with the modified src table
MOVE.L #0,SEPBlock+ioCompletion(A6) ; no completion routine
MOVE.W #0,SEPBlock+ioVRefNum(A6) ; device not volume
MOVE.L ([theGDevice]),A0 ; get ptr to theGDevice
MOVE.W (A0),SEPBlock+ioRefNum(A6) ; copy refNum from theGDevice
MOVE.W #csc_SetEntries,SEPBlock+csCode(A6) ; control code for this call
LEA CParms(A6),A0 ; get addr of parms
MOVE.L A0,SEPBlock+csParam(A6) ; move addr of parms into block
; set up control call parameters
LEA CTTable(A2),A0 ; get pointer to the colorspecs
MOVE.L A0,cParms+csTable(A6) ; put in parameter block
MOVE.W #-1,cParms+csStart(A6) ; always use index mode
MOVE.W D2,cParms+csCount(A6) ; for the correct size
; make a call to the device driver
LEA SEPBlock(A6),A0 ; get pointer to parmblock
_Control ,IMMED ; make a control call <C695/26Jan87> DAF
; test result and finish up
BEQ.S ReleaseSP ; call went ok, so continue
MOVE.W D0,QDErr ; report the control code error
; finally, restore the src table value fields
ReleaseSP
MOVE.W D2,D0 ; get # of value fields to move
@2
MOVE.W (SP,D0*2),CTTable+value(A2,D0*8) ; copy the values
DBRA D0,@2 ;
ADDA D1,SP ; release the temporary space
JustInstall
MOVE.W ReqLData(A1,D2*2),D0 ; get the request index
CMP.W #invalColReq,D0 ; if the request is bad, skip it
BEQ.S JLoopCont ;
CMP.W CTSize(A3),D0 ; is it in the legal range?
BGT.S JIErr ; if not, then return an error
MOVE.L CTTable(A2,D2*8),CTTable(A3,D0*8) ; copy value and red
MOVE.L CTTable+rgb+green(A2,D2*8),CTTable+rgb+green(A3,D0*8) ;copy green and blue
JLoopCont
DBRA D2,JustInstall ; loop back
Exeunt
TST.L dstT(A6) ; if NIL, was a device call, so call the Palette Mgr
BNE.S Moofem ; nope, so skip around
MOVE.L RLst(A6),-(SP) ; push the request list pointer
MOVE #18,D0 ; this is the selector for the _ReleaseList call
DC.W $AAA2 ; this is the extensible PaletteMgr trap
Moofem
MOVEM.L (SP)+,A2/A3/D3 ; restore work registers
UNLK A6 ; release stack frame
RTD #12 ; and return to caller
JIErr
MOVE.W #cRangeErr,QDErr ; move error message into QDErr
BRA.S JLoopCont ; continue
REDevErr
MOVE.W #cDevErr,QDErr ;
BRA.S Moofem ;
; If ANY of the requests are out of range, then leave the whole call without doing anything. Bruce
; asked for this change since ancient users of Save/RestoreEntries (PixelPaint and Color Picker)
; will trash the system with RestoreEntries if they were Switcheroo'd into a different depth. This
; ONLY protects you if you are switching to a lower pixel depth, but it helps out a lot in those
; cases
LeakError
MOVE.W #cRangeErr,QDErr ; report an error
MOVE.W D2,D0 ; get # of value fields to move
@2
MOVE.W (SP,D0*2),CTTable+value(A2,D0*8) ; restore the sourcetable values
DBRA D0,@2 ;
ADDA D1,SP ; release the temporary space
BRA.S Exeunt ; and out
;
; procedure SaveEntries (srcTable:cTabHandle; ResultTable:cTabHandle; var selection:requestList);
;
; SaveEntries saves a selection of entries from srcTable into ResultTable. The elements
; to be copied are enumerated in selection (these values are offsets into the colorTable,
; not the contents of the value field). If an element is not present in srcTable, then
; that position of the requestList is set to invalColReq, and that position of ResultTable has random
; values returned. If one or more elements are not found, then an error code is posted
; to QDErr; however, for every element in selection which is not -1, the values in ResultTable
; are valid. Note that srcTable and selection are assumed to have the same number
; of elements.
;
SaveEntries PROC EXPORT
SrcT EQU 16
ResT EQU 12
RLst EQU 8
LINK A6,#0 ;
MOVE.L A2,-(SP) ; save a register
CLR.W QDErr ; clear error register
TST.L SrcT(A6) ; if source is NIL, use theGDevice's ctable
BNE.S @80 ;
MOVE.L ([theGDevice]),A0 ; get a pointer to the current device
CMP.W #CLUTType,GDType(A0) ; is it a CLUT device? <1.4>
BNE.S SavEntDevErr ; nope, so report an error <1.4> <SM3>
MOVE.L ([GDPMap,A0]),A0 ; get pixMap's handle <C239> DAF
MOVE.L ([PMTable,A0]),A2 ; get a pointer to the device colortable <C239> DAF
BRA.S @81 ; and continue
@80
MOVE.L ([SrcT,A6]),A2 ; get source colortable ptr
@81
MOVE.L RLst(A6),A1 ; get the request list ptr
MOVE.W ReqLSize(A1),D2 ; get the request list size
MOVE.W D2,D0 ; copy size to a temp register
ADDQ #1,D0 ; increase by one for size calculations
MULU #CTEntrySize,D0 ; calc the result table size
ADDQ #CTTable,D0 ; add the header size
MOVE.L ResT(A6),A0 ; get the result table handle
TST.L (A0) ; is the master pointer NIL?
BEQ.S @0 ; if so, do a realloc
_SetHandleSize ; set the result table size
BRA.S @1 ;
@0
_ReallocHandle ;
@1
BEQ.S @2
MOVE.W #CNoMemErr,QDErr ; mark the error <C621/13Jan87> DAF
BRA.S SaveEntDone ; and quit <C621/13Jan87> DAF <SM3>
@2
MOVE.L (A0),A0 ; get a pointer to the result table
MOVE.L #0,CTSeed(A0) ; clear CTSeed
MOVE.W #0,TransIndex(A0) ; clear transparent value
MOVE.W D2,CTSize(A0) ; #elements = size of request table
SavLoop
MOVE.W ReqLData(A1,D2*2),D0 ; get the request value
CMP.W CTSize(A2),D0 ; is it in the allowable range? <C491/08Dec86> DAF
BGT.S SaveEntRangeErr ; no, so mark an error <SM3>
MOVE.L CTTable(A2,D0*8),CTTable(A0,D2*8) ;move value and red to result table
MOVE.L CTTable+rgb+green(A2,D0*8),CTTable+rgb+green(A0,D2*8) ; green and blue
SLoopCont
DBRA D2,SavLoop ; go on to the next request
SaveEntDone ; <SM3>
MOVE.L (SP)+,A2 ; restore that register
UNLK A6 ; trash the stack frame
RTD #12 ; and return <SM3>
SaveEntRangeErr ; <SM3>
MOVE.W #invalColReq,ReqLData(A1,D2*2) ; mark this element invalid
MOVE.W #cRangeErr,QDErr ; move error message into QDErr
BRA.S SLoopCont ; continue
SavEntDevErr ; <1.4><1.5><SM3>
MOVE.W #cDevErr,QDErr ; post error code <1.4><SM3>
BRA.S SaveEntDone ; and quit <1.4><SM3>
;
; procedure ProtectEntry (index : integer; protect : boolean);
;
; ProtectEntry sets the protect bit in theGDevice's colortable. If
; protect is TRUE, then the bit is set and SetEntry will not change
; it. If protect is FALSE, then the bit is cleared and the CLUT can
; be changed.
;
ProtectEntry PROC EXPORT
EXPORT ReserveEntry
MOVEQ #protectBit,D2 ; this call modifies the protect bit
BSR.S CTCommon ; do it
OneQuit ; <C751/03Feb87> DAF
RTD #4 ;
ProtErr
MOVE.W #cProtectErr,QDErr ; mark the error <C751/03Feb87> DAF
BRA.S RErrQ ; jump to common exit <C751/03Feb87> DAF
RangeErr
MOVE.W #cRangeErr,QDErr ; mark the error <C751/03Feb87> DAF
RErrQ
ADDQ #4,SP ; kill the BSR's return addr <C751/03Feb87> DAF
BRA.S OneQuit ; use ProtectEntry's (both have same cleanup) <C751/03Feb87> DAF
;
; utility CTCommon
;
; CTCommon is a utility shared by ProtectEntry and Reserve entry. It
; sets/clears the bit (whose mod 8 position is in D2) in theGDevice's
; colortable. It trashes A1/D1 and ReserveEntry expects A0 to contain
; a pointer to the colorTable and D0 to be the affected index.
; Corrected offsets into stack frame and scaling (C575)
CTCommon
CLR.W QDErr ; clear the error flag <C751/03Feb87> DAF
MOVE.L ([theGDevice]),A0 ; get the current device pointer
MOVE.L ([GDPMap,A0]),A0 ; get the device pixelmap pointer
MOVE.L ([pmTable,A0]),A0 ; point to the color table
MOVE.W 10(SP),D0 ; get the index <C575/30Dec86> DAF
CMP.W CTSize(A0),D0 ; is it in the legal range? <C751/03Feb87> DAF
BGT.S RangeErr ; oops, out of range <C751/03Feb87> DAF
TST.B 8(SP) ; test the boolean <C575/30Dec86> DAF
BEQ.S @1 ; if equal, then clear bit
BTST D2,CTTable+value(A0,D0.W*8) ; if bit already on? <C751/03Feb87> DAF
BNE.S ProtErr ; if so, return error <C751/03Feb87> DAF
BSET D2,CTTable+value(A0,D0.W*8) ; turn bit on <C575/30Dec86> DAF
BRA.S @2 ;
@1 BCLR D2,CTTable+value(A0,D0.W*8) ; turn bit off <C575/30Dec86> DAF
@2
RTS
;
; procedure ReserveEntry (index : integer; reserve : boolean);
;
; ReserveEntry sets the reserve bit in theGDevice's colortable. If
; reserve is TRUE, then this CLUT element will not be seeded during
; ITable building and will not be a treated as an available color.
; Additionally, if reserve is TRUE, the value field will be marked
; with the current GDID (for symmetry with SetEntries).
; If reserve is FALSE, then the bit is cleared and this entry
; can be a match. The clientID of this entry is not affected
;
ReserveEntry
MOVEQ #ReserveBit,D2 ; this call modifies the reserve bit
BSR.S CTCommon ; do it
TST.B 4(SP) ; is reserve true? <C751/03Feb87> DAF
BEQ.S @1 ; if false, then done <C751/03Feb87> DAF
MOVE.W CTTable+value(A0,D0.W*8),D1 ; get value field of affected colorSpec <C751/03Feb87> DAF
MOVE.L ([theGDevice]),A1 ; get pointer to theGDevice <C751/03Feb87> DAF
MOVE.B GDID+1(A1),CTTable+value+1(A0,D0.W*8) ; set clientID (lo byte of GDID) <C777/09Feb87> DAF
@1
CLR.L -(SP) ; make room for function return <C777/09Feb87> DAF
_rGetCTSeed ; get the next seed <BAL 04Sep88>
MOVE.L (SP)+,CTSeed(A0) ; and put it in the table <C777/09Feb87> DAF
RTD #4 ; return to caller
;
; procedure SetClientID ( id : integer );
;
; SetClientID updates the clientID field of theGDevice. This field is
; used by the search and complement procedures to determine if they
; should operate on a particular request.
SetClientID PROC EXPORT
MOVE.L ([theGDevice]),A0 ; get the current device pointer
MOVE.W 4(SP),GDID(A0) ; set it
RTD #2 ; return
;
; procedure AddSearch (SearchProc : ProcPtr);
;
; This routine adds a search procedure to the head of the list of
; searchprocs in theGDevice.
;
AddSearch PROC EXPORT
EXPORT AddComp
CLR.W QDErr ; clear the error register <C387/09Nov86> DAF
MOVE.L (SP)+,D2 ; grab the return address
MOVE.L (SP)+,D1 ; grab the searchProc pointer
BEQ.S AllDone ; if NIL, don't install
MOVE.L #sProcSize,D0 ; allocate a new proc element
_NewHandle ; get that memory <C666/22Jan87> DAF
BNE.S ProcMemFailure ; couldn't get it
move.l d1,d0 ; get procPtr in d0 <BAL 14Mar89>
_rTranslate24to32 ; clean up the address <BAL 14Mar89>
MOVE.L ([theGDevice]),A1 ; get the current device pointer
MOVE.L GDSearchProc(A1),D1 ; hold the current search proclist element
MOVE.L A0,GDSearchProc(A1) ; install the new element
MOVE.L (A0),A0 ; get the procList pointer <C666/22Jan87> DAF
MOVE.L D0,SRCHPROC(A0) ; put in the list <C666/22Jan87> DAF
MOVE.L D1,NXTSRCH(A0) ; link up chain <C666/22Jan87> DAF
; Get a unique seed for this device to force the search proc to get called and the Itab rebuilt
; <BAL/dvb/RAJ 03Mar89>
; Removed for PhotoMac compatibility <BAL 26Mar89>
; MOVE.L ([GDPMap,A1]),A1 ; get the device pixelmap pointer
; MOVE.L pmTable(A1),d0 ; get the device clut handle <BAL 21Mar89>
; beq.s AllDone ; skip if no clut <BAL 21Mar89>
; move.l d0,a1
; MOVE.L (a1),A1 ; get the device clut pointer
; CLR.L -(SP) ; make room for function return
; _rGetCTSeed ; get the next seed
; MOVE.L (SP)+,CTSeed(A1) ; and put it in the table <BAL/dvb/RAJ 03Mar89>
AllDone JMP (ZA0,D2.L) ; return home
ProcMemFailure
MOVE.W #cNoMemErr,QDErr ; load memory error code <C387/09Nov86> DAF
BRA.S AllDone ; <C387/09Nov86> DAF
;
; procedure AddComp (CompProc : ProcPtr);
;
; This routine adds a complement procedure to the head of the list of
; compprocs in theGDevice.
;
AddComp
CLR.W QDErr ; clear the error register <C666/22Jan87> DAF
MOVE.L (SP)+,D2 ; grab the return address
MOVE.L (SP)+,D1 ; grab the compProc pointer
BEQ.S AllDunn ; if NIL, don't install
MOVE.L #sProcSize,D0 ; allocate a new proc element
_NewHandle ; get that memory <C666/22Jan87> DAF
BNE.S ProcMemFailure ; couldn't get it
move.l d1,d0 ; get procPtr in d0 <BAL 14Mar89>
_rTranslate24to32 ; clean up the address <BAL 14Mar89>
MOVE.L ([theGDevice]),A1 ; get the current device pointer
MOVE.L GDCompProc(A1),D1 ; hold the current complement proclist element <C666/22Jan87> DAF
MOVE.L A0,GDCompProc(A1) ; install the new element
MOVE.L (A0),A0 ; get procList pointer <C666/22Jan87> DAF
MOVE.L D0,COMPPROC(A0) ; put in the list <C666/22Jan87> DAF
MOVE.L D1,NXTCOMP(A0) ; link up chain <C666/22Jan87> DAF
AllDunn JMP (ZA0,D2.L) ; return home
;
; procedure DelSearch ( SearchProc : ProcPtr );
;
; This routine removes a search proc (identified by it's procPtr from theGDevice's search list
;
; contains fix from QDciPatchROM.a to clean up the address before searching <sm 6/9/92>stb
DelSearch PROC EXPORT ; <C666/22Jan87> DAF
MOVE.L 4(SP),D0 ; get the SearchProc pointer
_rTranslate24to32 ; clean up the address <KON 29May90>
MOVE.L ([theGDevice]),A1 ; get the current device pointer
; Get a unique seed for this device to force the Itab to get rebuilt <BAL/dvb/RAJ 03Mar89>
; Removed for PhotoMac compatibility <BAL 26Mar89>
; MOVE.L ([GDPMap,A1]),A0 ; get the device pixelmap pointer <BAL/dvb/RAJ 03Mar89>
; MOVE.L pmTable(A0),d0 ; get the device clut handle <BAL 21Mar89>
; beq.s skipSeed ; skip if no clut <BAL 21Mar89>
; move.l d0,a0
; MOVE.L (a0),A0 ; get the device clut pointer
; CLR.L -(SP) ; make room for function return <BAL/dvb/RAJ 03Mar89>
; _rGetCTSeed ; get the next seed <BAL/dvb/RAJ 03Mar89>
; MOVE.L (SP)+,CTSeed(A0) ; and put it in the table <BAL/dvb/RAJ 03Mar89>
skipSeed
LEA GDSearchProc(A1),A1 ; get pointer to "nxtSearch" field
MOVE.L (A1),D2 ; hold the current search proclist handle
@1
BEQ.S DSrchDone ; if nil, then end of chain
MOVE.L D2,A0 ; copy to an addr register
MOVE.L (A0),A0 ; get the pointer to proc list elem
CMP.L srchProc(A0),D0 ; do they match?
BEQ.S RmvSrch ; yes, so splice it out
LEA NxtSrch(A0),A1 ; get addr of this NxtSrch field
MOVE.L NxtSrch(A0),D2 ; go to the next one
BRA.S @1
RmvSrch
MOVE.L NxtSrch(A0),(A1) ; relink the chain around this element
MOVE.L D2,A0 ; setup for Dispose
_DisposHandle ; dispose the procLstElem
DSrchDone
RTD #4 ; strip params and return
;
; procedure DelComp ( complementProc : ProcPtr );
;
; This routine removes a complement proc (identified by it's procPtr from theGDevice's search list
;
; contains fix from QDciPatchROM.a to clean up the address before searching <sm 6/9/92>stb
DelComp PROC EXPORT ; <C666/22Jan87> DAF
MOVE.L 4(SP),D0 ; get the CompProc pointer
_rTranslate24to32 ; clean up the address <KON 29May90>
MOVE.L ([theGDevice]),A1 ; get the current device pointer
LEA GDCompProc(A1),A1 ; get pointer to "nxtComp" field
MOVE.L (A1),D2 ; hold the current complement proclist handle
@1
BEQ.S DCompDone ; if nil, then end of chain
MOVE.L D2,A0 ; copy to an addr register
MOVE.L (A0),A0 ; get the pointer to proc list elem
CMP.L CompProc(A0),D0 ; do they match?
BEQ.S RmvComp ; yes, so splice it out
LEA NxtComp(A0),A1 ; get addr of this NxtSrch field
MOVE.L NxtComp(A0),D2 ; go to the next one
BRA.S @1
RmvComp
MOVE.L NxtComp(A0),(A1) ; relink the chain around this element
MOVE.L D2,A0 ; setup for Dispose
_DisposHandle ; dispose the procLstElem
DCompDone
RTD #4 ; strip params and return
;
; procedure GetSubTable (VAR myColors:CTabHandle;
; iTabRes:integer;
; TargetTbl:CTabHandle);
;
; This routine takes a colorTable pointed at by myColors, and determines
; the best match index values for each rgb in myColors. These best
; matches are returned in the .value fields of myColor's colorSpecs.
; The values returned are best matches to the RGBs in TargetTbl and
; the returned indices are TargetTbl's .values. Best matches are
; calculated using Color2Index and all applicable rules apply.
; iTabRes controls the channel size of the iTable that is built.
; If TargetTbl is NIL, then theGDevice's colortable is used as the target
; and no inverse table is built.
;
GetSubTable PROC EXPORT
; offsets to parameters ; offsets corrected <C491/06Dec86> DAF
myColors EQU 14 ;
iTabResolution EQU 12 ;
TargetTbl EQU 8 ;
ITHndl EQU -4 ; temporary handle for iTable
SavHndl EQU -8 ; save theGDevice's iTable here
SavCol EQU -12 ; save theGDevice's colortable here <CXXX>
LinkSize EQU SavCol ; <CXXX>
LINK A6,#LinkSize ; make a stack frame
MOVEM.L A2/D3,-(SP) ; save some registers <C491/06Dec86> DAF
TST.L TargetTbl(A6) ; is target table NIL?
BEQ.S @UseOldTable ; nope, so make an ITable
_NewEmptyHandle ; make a temp handle for iTable
MOVE.L A0,ITHndl(A6) ; save the handle
MOVE.L TargetTbl(A6),-(SP) ; push the source cTable
MOVE.L A0,-(SP) ; push the iTable handle
MOVE.W iTabResolution(A6),-(SP) ; push the resolution
_MakeITable ; make an inverse table
TST.W QDErr ; did it fail? <C777/09Feb87> DAF
BNE.S @BailOut ; clean up an quit leaving the QDErr <C777/09Feb87> DAF
MOVE.L ([theGDevice]),A1 ; get a pointer to the device port
MOVE.L GDITable(A1),SavHndl(A6) ; save the current iTable here
MOVE.L ITHndl(A6),GDITable(A1) ; and substitute this iTable
MOVE.L ([GDPMap,A1]),A1 ; get pixMap's pointer <C777/09Feb87> DAF
MOVE.L PMTable(A1),SavCol(A6) ; save the current colorTable here <CXXX>
MOVE.L myColors(A6),PMTable(A1) ; and substitute this colorTable <CXXX>
MOVE.L ([PMTable,A1]),A1 ; copy colorTable's ctSeed into iTable <C695/26Jan87> DAF
MOVE.L ctSeed(A1),D0 ; get the ctSeed (to avoid rebuilds) <C695/26Jan87> DAF
MOVE.L ([ITHndl,A6]),A1 ; copy seed into the temp inverseTable <C695/26Jan87> DAF
MOVE.L D0,ITabSeed(A1) ; put seed into the iTable <C695/26Jan87> DAF
@UseOldTable
MOVE.L myColors(A6),A0 ; get source's cTabHndl
_HLock ; just for security <C491/06Dec86> DAF
MOVE.L (A0),A2 ; get a pointer <C491/06Dec86> DAF
MOVE.W CTSize(A2),D3 ; get the number of entries <C491/06Dec86> DAF
@0
SUBQ #4,SP ; make room for function return <C491/06Dec86> DAF
PEA CTTable+rgb(A2,D3*8) ; push the entry's rgb addr <C491/06Dec86> DAF
_Color2Index ; get the value
ADDQ #2,SP ; throw away hi word of result <C491/06Dec86> DAF
MOVE.W (SP)+,CTTable+value(A2,D3*8) ; place result in table <C491/06Dec86> DAF
DBRA D3,@0 ; loop on all entries
MOVE.L myColors(A6),A0 ; get source's cTabHndl <C491/06Dec86> DAF
_HUnlock ; and free it <C491/06Dec86> DAF
TST.L TargetTbl(A6) ; was it NIL?
BEQ.S @1 ; if it was, then skip the restorations
MOVE.L ([theGDevice]),A1 ; get a pointer to the device port
MOVE.L SavHndl(A6),GDITable(A1) ; restore the device inverse table
MOVE.L ([GDPMap,A1]),A1 ; get pixMap's pointer <C777/09Feb87> DAF
MOVE.L SavCol(A6),PMTable(A1) ; and substitute this colorTable <CXXX>
@BailOut
MOVE.L ITHndl(A6),A0 ; get the temp iTabHndl again
_DisposHandle ; all done, so dispose
@1
MOVEM.L (SP)+,A2/D3 ; restore saved registers <C666/22Jan87> DAF
UNLK A6 ; release stack frame
RTD #10 ; return <C491/06Dec86> DAF
;
; function QDError : integer; <C387/09Nov86> DAF
;
; This function returns the current value of QDErr, which reflects error conditions
; following the previous QuickDraw/Color Manager call.
;
QDError PROC EXPORT
MOVE.W QDErr,4(SP) ; move error code to function return
CLR.W QDErr ; and clear the code
RTS
;---------------------------------------------------
;
; FUNCTION DeltaRGB(ColorInfo,ColorSpec:Ptr):integer; LOCAL;
;
DeltaRGB FUNC EXPORT
ParamSize equ 8 ; total bytes of params
Delta equ ParamSIze+10-2 ; integer result
RGB1 equ Delta-4 ; palette entry pointer
RGB2 equ RGB1-4 ; color table entry pointer
VarSize equ 0 ; size of variables
Link A6,#VarSize ; build stack frame
MOVEM.L A0-A1/D0-D1,-(SP)
Move.L RGB1(A6),A0 ; get first RGBColor
Move.L RGB2(A6),A1 ; get second RGBColor
Move (A1)+,D0 ; grab index red
Sub (A0)+,D0 ; subtract entry red
Bhs.S NotNeg1 ; take abs(Index.Red-ColorInfo.Red)
Neg D0 ; negate it
NotNeg1 Move (A1)+,D1 ; grab index green
Sub (A0)+,D1 ; subtract entry green
Bhs.S NotNeg2 ; take abs(Index.Green-ColorInfo.Green)
Neg D1 ; negate it
NotNeg2 Cmp D0,D1 ; leave greater unsigned value in D0
Blo.S DontSwitch1 ; D1 < D0 => D0 is already greater
Move D1,D0 ; green value is greater
DontSwitch1 Move (A1),D1 ; grab index blue
Sub (A0),D1 ; subtract entry blue
Bhs.S NotNeg3 ; take abs(Index.Blue-ColorInfo.Blue)
Neg D1 ; negate it
NotNeg3 Cmp D0,D1 ; leave greater unsigned value in D0
Blo.S FixResult ; D1 < D0 => D0 is already greater
Move D1,D0 ; blue value is greater
FixResult Move D0,Delta(A6) ; set result
MOVEM.L (SP)+,A0-A1/D0-D1
Unlk A6 ; clear stack frame
Rtd #ParamSize ; strip parameters and go home
ENDF
;---------------------------------------------------
;
; FUNCTION myGetCTable(ID:INTEGER):Handle;
;
; Get a 'clut' resource of the specified ID, as a non-resource
; handle. Unless, of course, the number is 32+[1,2,4,8] in which
; case we return a gray scale of that size. Or if the number is
; 64+[1,2,4,8] we'll return a clut with a hilite modification.
;
; Passing 64 plus other than 1, 2, 4, or 8 will yield strange results.
;
; stack like this: (SP) return.L, 4(SP) depth.W, 6(SP) result handle.L
;
; <dvb8> for whole routine
PROC
EXPORT GetCTable
GrayMuls DC.W $FFFF,$5555,$0000,$1111,$0000,$0000,$0000,$0101 ; <BAL 06Jun89>
; gray multiplier 1-bit 2-bit 4-bit 8-bit
doGrayClut AND #$F,D0 ; Mask the graybit
MOVE D0,4(SP) ; Put it in the passed param
CLR.L D1
ADDQ #3,D0 ; + 3 becomes * 8 on next line, for c-Spec size
BSET D0,D1 ; 2 to the nth
ADDQ.L #8,D1 ; Add size of ctab header
MOVE.L D1,D0 ; Here, for newhandle
_NewHandle ; Get a brand new colortable
BEQ.S @gotGrayH ; Did we?
CLR.L 6(SP) ; No=>return nil
RTD #2
@gotGrayH MOVE 4(SP),D0 ; Get depth again
LEA GrayMuls-2,A1 ; A1->our gray multiplier table <2.1>
MOVE.w (A1,D0*2),D1 ; D1.w = color step for this bit depth <BAL 06Jun89>
move.w d1,d2 ; copy into d2 <BAL 06Jun89>
swap d2 ; set up high word <BAL 06Jun89>
move.w d1,d2 ; replicate throughout long <BAL 06Jun89>
MOVE.L (A0),A1 ; A1->our brand new ctable clut
move.w #$8000,transIndex(A1) ; mark as device clut
CLR D1 ; From bit depth,
BSET D0,D1 ; Generate number of entries
SUBQ #1,D1 ; Minus one, for ctSize silliness
MOVE D1,ctSize(A1) ; Set size of colortable
CMPI #3,D0 ; Size 1 or 2 bits? <dvb>
BLT.S @graySeed ; Yes => don't call it GrayScale by seed <dvb>
ADD #32,D0 ; Constant +32 for GrayScale seeds
@graySeed MOVE.L D0,ctSeed(A1) ; Jam seed <dvb>
LEA ctTable(A1),A1 ; A1->first colorSpec
MOVEQ #-1,D0 ; Lowest index is white
MOVEQ #0,D1 ; D1 will be .value fields <dvb>
@grayLoop MOVE D1,(A1)+ ; put pixel value in .value field <dvb>
ADDQ #1,D1 ; <dvb>
MOVE.L D0,(A1)+ ; Stash red and green
MOVE D0,(A1)+ ; Stash blue, A1->next cSpec
SUB.L D2,D0 ; Bump D0 to next reasonable value
BCC.S @grayLoop ; Until we go under zero, beyond black
BRA GoHome
doHiliteClut AND #$F,D0 ; Mask the hilitebit
MOVE D0,-(SP) ; Push it for the Resource read
BSR ReadIt ; Okay, read it.
MOVE.L A0,D0 ; A good thing?
BEQ GoHome ; No=>go home (with NIL from A0)
MOVE.L (A0),A1 ; A1->color table
SUBQ #4,SP ; Space for new seed
_GetCTSeed ; Get that new seed
MOVE.L (SP)+,ctSeed(A1) ; Put seed into synthetic table
MOVE 4(SP),D0 ; D0 = clutID again
BTST #1,D0 ; Two bit mode?
BEQ.S checkFour ; No=>check other stuff
; If the hilite color is a gray then CLUT is OK <2.2>
LEA HiliteRGB,A1 ; Point at hilite color <2.2>
MOVE.B red(A1),D1 ; Get red msb <2.2>
CMP.B green(A1),D1 ; green same as red? <2.2>
BNE.S @notGray ; no, go use it. <2.2>
CMP.B blue(A1),D1 ; blue same as red and green? <2.2>
BEQ GoHome ; yes, leave clut alone. <2.2>
@notGray MOVE.L (A0),A1 ; A1->color table <2.2>
LEA ctTable+8+rgb(A1),A1 ; Bump A1 to 2nd entry.rgb.red
MOVE.L #$7FFF7FFF,(A1)+ ; Put 50% gray into red,green
MOVE #$7FFF,(A1)+ ; and blue
ADDQ #2,A1 ; Bump past .value field in third entry
MOVE.L HiliteRGB,(A1)+ ; Put hilite color into red,green
MOVE HiliteRGB+blue,(A1) ; and blue.
BRA GoHome
checkFour BTST #2,D0 ; Four bit mode?
BEQ GoHome ; No => must be 1 or 8-bit, so we're done.
MOVE #14,D2 ; DBRA counter, skipping white
MOVE.L #$0001FFFF,D1 ; Lo word = error distance, Hi word = best index
@B4loop SUBQ #2,SP ; space for result
PEA HiliteRGB ; push system hilite color
PEA ctTable+rgb(A1,D2*8) ; push color we're checking
JSR DeltaRGB
MOVE (SP)+,D0
CMP D0,D1
BLS.S @B4loopEnd
MOVE D0,D1 ; Get new smallest delta
SWAP D1 ; D1 = Get index number in low word
MOVE D2,D1 ; Get new closest index
SWAP D1 ; D1 = Put delta back to low word
@B4loopEnd SUBQ #1,D2
BNE.S @B4loop ; Loop on down, but skip zero
CMPI #$3000,D1 ; Are we pretty darned tolerant?
BLS.S GoHome ; Yes=> we're fine, go home
SWAP D1
LEA ctTable+rgb+red(A1,D1*8),A1 ; A1->RGB to tweak
@realClose MOVE.L HiliteRGB+red,D0 ; D0 = hilite r,g
SWAP D0 ; D0.W = red
ADD red(A1),D0 ; D0.W = hilite red+old red
ROXR #1,D0 ; Average
MOVE D0,red(A1) ; write red
SWAP D0
ADD green(A1),D0 ; D0.W = hilite green+old green
ROXR #1,D0 ; Average
MOVE D0,green(A1) ; write green
MOVE HiliteRGB+blue,D0 ; D0.W = hilite blue
ADD blue(A1),D0
ROXR #1,D0 ; Average
MOVE D0,blue(A1) ; write blue
SUBQ #2,SP ; space for result
PEA HiliteRGB ; Have we really got the hilite
PEA (A1) ; color within a reasonable range?
JSR DeltaRGB ; Let's see.
CMPI #$3000,(SP)+ ; 3000 is good enough to look decent.
BHI.S @realClose ; But, its not there yet, so avg again.
BRA.S GoHome
GetCTable clr.l 6(sp) ; NIL return if call fails. <KON 6NOV90>
MOVE 4(SP),-(SP) ; First, try to read a resource
BSR.S ReadIt ; (do that)
MOVE.L A0,D0 ; Get anything?
BEQ.S notRes ; No=>try other means
GoHome MOVE.L A0,6(SP) ; Yes=>stash it
RTD2 RTD #2 ; roger and out.
notRes MOVE 4(SP),D0 ; Get requested ID
CMPI #72,D0 ; 72 is the highest we can noodle
BHI.S RTD2
MOVE.L #$00000116,D1 ; Bits 1, 2, 4, and 8 are set
BTST D0,D1 ; Are low 5 bits in [1,2,4,8]?
BEQ.S RTD2
BTST #5,D0
BNE.S doGrayClut ; 32+[1,2,4,8]
BTST #6,D0
BNE.S doHiliteClut ; 64+[1,2,4,8]
BRA.S RTD2
readIt SUBQ #4,A7 ; space for result
MOVE.L #'clut',-(SP) ; resource type
MOVE 12(SP),-(SP) ; push ID number
_GetResource ; Get it.
MOVE.L (SP)+,D0 ; Did we get the resource?
BEQ.S @otherThing
MOVE.L D0,-(SP) ; Push the Resource Handle
MOVE.L D0,-(SP) ; Push the Resource Handle
_DetachResource ; Free it from the Map
MOVE.L (SP)+,A0
_HNoPurge
MOVE.L (A0),A1
SUBQ #4,SP
_rGetCTSeed
MOVE.L (SP)+,(A1)
BRA.S @Done ; -> Got It!
@otherThing
MOVE #$FFFF,RomMapInsert
SUBQ #4,SP
MOVE.L #'clut',-(SP)
MOVE 12(SP),-(SP)
_GetResource
MOVE.L (SP)+,D0
BEQ.S @readFail
MOVE.L D0,A0
_HandToHand
BEQ.S @done
@readFail SUBA.L A0,A0 ; A miserable failure.
@done RTD #2 ; Lose ID, and go home.
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