mirror of
https://github.com/thrust26/6502-QR-code-generator.git
synced 2024-12-26 13:31:27 +00:00
added function module drawing
This commit is contained in:
thrust26
parent
d150cbc5af
commit
77263c915c
@ -162,16 +162,3 @@ EorGfx
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.byte %10100010 ; constant
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.byte %10111110 ; constant
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.byte %10000000 ; constant
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FirstIdxTbl ; for 25 pixel
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ds 7, 0
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.byte $fe
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ds 7, 0
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.byte $01
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ds 7, 0
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IF QR_LEVEL = 0 || QR_LEVEL = 1
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.byte $bf ; 1st format bit is 1
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ELSE
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.byte $3f ; 1st format bit is 0
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ENDIF
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@ -171,15 +171,3 @@ GRP0RBlack
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IF QR_LEVEL = 1
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EOR_GFX ~%10101000, ~%00100100
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ENDIF
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FirstIdxTbl ; for 25 pixel
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ds 7, 0
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.byte $fe
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ds 7, 0
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.byte $01
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ds 7, 0
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IF QR_LEVEL = 0 || QR_LEVEL = 1
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.byte $bf ; 1st format bit is 1
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ELSE
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.byte $3f ; 1st format bit is 0
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ENDIF
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244
QRCodeGen.inc
244
QRCodeGen.inc
@ -2,8 +2,20 @@
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; Q R C O D E C O N S T A N T S
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;===============================================================================
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; Do NOT change these constants!
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IFNCONST QR_OVERLAP
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QR_OVERLAP = 0
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ENDIF
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IFNCONST QR_SINGLE_MASK
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QR_SINGLE_MASK = 0
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ENDIF
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IFNCONST QR_DIRECT_DRAW
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QR_DIRECT_DRAW = 0
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ENDIF
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IF QR_VERSION = 1 ;{
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QR_SIZE = 21 ; 21x21 QR code
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; 21x21 QR code
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IF QR_LEVEL = 0
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QR_DEGREE = 7 ; for version 1, level L QR codes
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ENDIF
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@ -19,7 +31,7 @@ QR_DEGREE = 17 ; for version 1, level H QR codes
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ENDIF ;}
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IF QR_VERSION = 2
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QR_SIZE = 25 ; 25x25 QR code
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; 25x25 QR code
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IF QR_LEVEL = 0
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QR_DEGREE = 10 ; for version 2, level L QR codes
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ENDIF
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@ -35,7 +47,7 @@ QR_DEGREE = 28 ; for version 2, level H QR codes
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ENDIF
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IF QR_VERSION = 3 ;{
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QR_SIZE = 29 ; 29x29 QR code
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; 29x29 QR code
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IF QR_LEVEL = 0
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QR_DEGREE = 15 ; for version 3, level L QR codes
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ENDIF
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@ -49,6 +61,8 @@ QR_DEGREE = 26 ; for version 3, level M QR codes
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ENDIF
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ENDIF ;}
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QR_SIZE = 17 + QR_VERSION * 4
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; Calculate capacity based on version
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_QR_VAL SET (QR_VERSION * 16 + 128) * QR_VERSION + 64
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IF QR_VERSION >= 2
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@ -219,24 +233,150 @@ RSMult SUBROUTINE
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bpl .loopI
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ENDM
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IF QR_DIRECT_DRAW = 0
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;-----------------------------------------------------------
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MAC _BLACK_FUNC
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;-----------------------------------------------------------
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; Blacks all function/alignment and timing pattern areas
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; assume bitmap is clear, only draw the pattern
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ldy #4+2 ; pattern + timing lines
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.loopPattern
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lda #$ff ; fill pattern
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jsr DrawPattern
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bpl .loopPattern
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ENDM
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;-----------------------------------------------------------
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BlackFunc SUBROUTINE
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;-----------------------------------------------------------
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_BLACK_FUNC
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rts
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;-----------------------------------------------------------
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MAC _DRAW_FUNC
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;-----------------------------------------------------------
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; Draws all function/alignment and timing pattern over existing codewords
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; blacken functions pattern first
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jsr BlackFunc
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; draw function pattern
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ldy #4
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.loopPattern
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lda #$00 ; draw pattern
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jsr DrawPattern
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bne .loopPattern
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; draw horizontal timing pattern
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ldy #QR_SIZE-1 - 9
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ldx #QR_SIZE-1 - 6
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.loopTimingH
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jsr InvertPixel
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dey
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dey
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cpy #9
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bcs .loopTimingH
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; draw vertical timing pattern
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ldy #6
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ldx #QR_SIZE-1 - 9
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.loopTimingV
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jsr InvertPixel
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dex
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dex
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cpx #9
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bcs .loopTimingV
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ENDM ;
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;---------------------------------------------------------------
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DrawPattern SUBROUTINE
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;---------------------------------------------------------------
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; Y = index, A = fill
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.index = tmpVars
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.width = tmpVars+1
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.height = tmpVars+2
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.offset = tmpVars+3
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.tmpPat = tmpVars+4
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.fill = tmpVars+5
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sty .index
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sta .fill
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ldx PatternY,y
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lda PatternHeight,y
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sta .height
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lda PatternOffset,y
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tay
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.loopRow
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sty .offset
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lda PatternStart,y
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ora .fill
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sta .tmpPat
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ldy .index
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lda PatternWidth,y
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sta .width
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lda PatternX,y
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tay
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; draw one row
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.loopBit
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sec ; allows for >8 black pixel
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ror .tmpPat
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bcc .clear
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;.set
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jsr CheckPixel
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bne .skipInvert
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.invert
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jsr InvertPixel
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.skipInvert
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iny
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dec .width
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bne .loopBit
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dex
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ldy .offset
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iny
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dec .height
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bne .loopRow
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.exit
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ldy .index
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dey
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rts
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.clear
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jsr CheckPixel
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bne .invert
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beq .skipInvert
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ENDIF ; /QR_DIRECT_DRAW = 0
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;-----------------------------------------------------------
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; Draws the raw codewords (including data and ECC) onto the given QR Code. This requires the initial state of
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; the QR Code to be black at function modules and white at codeword modules (including unused remainder bits).
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MAC _DRAW_CODEWORDS
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;-----------------------------------------------------------
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; Note: This part has the maximum RAM usage
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.right1 = tmpVars+0
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.vert = tmpVars+1
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.j = tmpVars+2
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.y = tmpVars+3
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.iBit = tmpVars+4
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.iByte = tmpVars+5
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.vert = tmpVars+0
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.j = tmpVars+1
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.y = tmpVars+2
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IF QR_DIRECT_DRAW
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.iBit = tmpVars+3
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.iByte = tmpVars+4
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.right1 = tmpVars+5
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ELSE
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; must not overlap with DrawPattern space
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.iBit = tmpVars+6
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.iByte = tmpVars+7
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.right1 = tmpVars+8
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ENDIF
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; blacken the (right) function modules in the bitmap
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IF QR_OVERLAP
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_BLACK_RIGHT ; returns with X = 0
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ELSE
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IF QR_DIRECT_DRAW
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_BLACK_FUNC ; returns with X = 0
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ELSE
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jsr BlackFunc
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ldx #0
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ENDIF
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ENDIF
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; int i = 0; // Bit index into the data
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; ldx #0
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@ -262,6 +402,9 @@ RSMult SUBROUTINE
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bne .skipBlackMiddle
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; blacken the middle function modules in the bitmap
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_BLACK_MIDDLE
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IF QR_DIRECT_DRAW = 0
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ldy .right1 ; DrawPattern overwrites Y
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ENDIF
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.skipBlackMiddle
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cpy #8+1
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bne .skipBlackLeft
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@ -332,7 +475,8 @@ RSMult SUBROUTINE
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ldy .right1
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dey
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dey
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bpl .loopRight ; unconditional!
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; bpl .loopRight ; unconditional!
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jmp .loopRight ; unconditional!
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; } // for right
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.exitDraw
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ENDM
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@ -496,7 +640,7 @@ RSMult SUBROUTINE
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;-----------------------------------------------------------
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MAC _DRAW_FORMAT
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;-----------------------------------------------------------
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IF QR_SINGLE_MASK = 0
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IF QR_SINGLE_MASK = 0 || QR_DIRECT_DRAW = 0
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.idx = tmpVars
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ldy #QR_FORMATS-1
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@ -510,7 +654,11 @@ RSMult SUBROUTINE
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lda FormatHi,x
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and BitMask-8,y
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.lowFormat
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IF QR_DIRECT_DRAW
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beq .skipFormat
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ELSE
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bne .skipFormat
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ENDIF
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ldx FormatY1,y
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lda FormatX1,y
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tay
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@ -643,8 +791,77 @@ _QR_TOTAL SET _QR_TOTAL + . - QRCodeCode
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; Add this to your code's data area
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QRCodeData
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IF QR_DIRECT_DRAW = 0
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; Function pattern parameters
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PatternX ; left
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.byte 6 ; left, vertical timing line
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.byte 0, 0, QR_SIZE-8 ; eye pattern
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.byte QR_SIZE-8, QR_SIZE-9 ; alignment pattern (right/middle part)
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.byte 9 ; top, horizontal timing line
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PatternY ; top
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.byte QR_SIZE - 10 ; left, vertical timing line
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.byte QR_SIZE-1, 7, QR_SIZE-1 ; eye pattern
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.byte 8, 8 ; alignment pattern (right/middle part)
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.byte QR_SIZE - 7 ; top, horizontal timing line
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PatternOffset = . - 1
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.byte EyeLeftTop-PatternStart ; 1
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.byte EyeLeftBottom-PatternStart ; 2
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.byte EyeRightTop-PatternStart ; 3
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.byte AlignRightBottom-PatternStart
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.byte AlignRightBottom-PatternStart
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; timing lines need no pattern, always drawn filled here
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PatternWidth
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.byte 1 ; left, vertical timing line
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.byte 9, 9, 8 ; eye pattern
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.byte 4, 1 ; alignment pattern (right/middle part)
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.byte QR_SIZE - 9 - 8 ; top, horizontal timing line
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PatternHeight
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.byte QR_SIZE - 9 - 8 ; left, vertical timing line
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.byte 9, 8, 9 ; eye pattern
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.byte 5, 5 ; alignment pattern (right/middle part)
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.byte 1 ; top, horizontal timing line
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PatternStart
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EyeRightTop
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.byte %11111110
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.byte %10000010
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.byte %10111010
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.byte %10111010
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.byte %10111010
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.byte %10000010
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.byte %11111110
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.byte %00000000
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.byte %11111111
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AlignRightBottom = . - 1
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; .byte %1111
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.byte %1000
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.byte %1010
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.byte %1000
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.byte %1111
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EyeLeftBottom
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.byte %00000000
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; .byte %01111111
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; .byte %01000001
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; .byte %01011101
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; .byte %01011101
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; .byte %01011101
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; .byte %01000001
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; .byte %01111111
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EyeLeftTop
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.byte %01111111
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.byte %01000001
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.byte %01011101
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.byte %01011101
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.byte %01011101
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.byte %01000001
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.byte %01111111
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.byte %00000000
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.byte %11111111
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ENDIF ; /QR_DIRECT_DRAW
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; Format Information Strings
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IF QR_SINGLE_MASK = 0
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IF QR_SINGLE_MASK = 0 || QR_DIRECT_DRAW = 0
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IF QR_LEVEL = 0 ; L
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FormatLo
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.byte %11101111
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@ -725,7 +942,6 @@ FormatHi
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.byte %00011000
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.byte %01110110
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ENDIF
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ENDIF ; /QR_SINGLE_MASK = 0
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; positions of the 15 type information bits
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FormatX1
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@ -742,7 +958,7 @@ FormatX2
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ds 7, 8
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.byte QR_SIZE-8, QR_SIZE-7, QR_SIZE-6, QR_SIZE-5
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.byte QR_SIZE-4, QR_SIZE-3, QR_SIZE-2, QR_SIZE-1
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ENDIF ; QR_SINGLE_MASK = 0
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ENDIF ; /QR_SINGLE_MASK = 0 || QR_DIRECT_DRAW = 0
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BitMask
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.byte $80, $40, $20, $10, $8, $4, $2, $1
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@ -35,21 +35,31 @@
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BASE_ADR = $f000
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NTSC = 1 ; 0 = PAL50
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ATARI_2600 = 1 ; enable for Atari 2600 specific code
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; QR Code Generator Switches
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QR_VERSION = 2 ; 1, 2 or 3 (TODO 1 and 3)
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QR_LEVEL = 1 ; 0 (L), 1 (M), 2 (Q) and 3 (H))
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QR_PADDING = 1 ; (+22 bytes) add padding bytes (optional)
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QR_GENERATE = 1 ; (+~12 bytes) generates Reed-Solomon ECC generator polynomial on-the-fly
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QR_PADDING = 1 ; (+ 22 bytes) add padding bytes (optional)
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QR_GENERATE = 0 ; (+~12 bytes) generates Reed-Solomon ECC generator polynomial on-the-fly
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; else uses built-in table
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; Atari 2600 specific QR settings (set to 0 for other platforms)
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; Atari 2600 specific QR settings (keep set to 0 for other platforms!)
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IFCONST ATARI_2600
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QR_OVERLAP = 1 ; overlaps input and output data to save RAM (defined for version 2 only!)
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QR_SINGLE_MASK = 0 ; (-255 bytes) if 1 uses only 1 of the 8 mask pattern
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QR_DIRECT_DRAW = 0 ; (+ 45 bytes) draw byte columns instead of individual pixel
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ENDIF
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IF QR_VERSION = 1 || QR_VERSION = 3
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IF QR_VERSION != 2
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ECHO ""
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ECHO "ERROR: Version", [QR_VERSION]d, "unsupported by demo code"
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ECHO "*** ERROR: Version", [QR_VERSION]d, "unsupported by demo code! ***"
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ERR
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ENDIF
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IF QR_SINGLE_MASK = 1 && QR_DIRECT_DRAW = 0
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ECHO ""
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ECHO "*** ERROR: Unsupported assembler switches combination! ***"
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ERR
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ENDIF
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@ -76,7 +86,11 @@ random .byte
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;---------------------------------------
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; QR code variables
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; all byte counts based on version 2, level M QR code
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IF QR_DIRECT_DRAW
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tmpVars ds 6
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ELSE
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tmpVars ds 9
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ENDIF
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msgIdx = tmpVars + 3
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IF QR_SINGLE_MASK = 0
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@ -89,11 +103,16 @@ msgData = data + QR_DEGREE ; (QR_MAX_DATA = 28 bytes)
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;- - - - - - - - - - - - - - - - - - - -
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; The QR code overlaps the data! It overwrites the data while being drawn.
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IF QR_OVERLAP
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qrCodeLst = data + 6 ; all but 6 bytes overlap (version 2 only!)
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ds NUM_FIRST + QR_SIZE*3 - QR_TOTAL + 6 ; 38 bytes
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IF QR_DIRECT_DRAW
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QR_NON_OVER = 6
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ELSE
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QR_NON_OVER = 8
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ENDIF
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qrCodeLst = data + QR_NON_OVER ; all but 6/8 bytes overlap (version 2 only!)
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ds NUM_FIRST + QR_SIZE*3 - QR_TOTAL + QR_NON_OVER ; 38/40 bytes
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ELSE
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qrCodeLst ds NUM_FIRST + QR_SIZE*3 ; 76 bytes
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ENDIF
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qrCodeLst ds NUM_FIRST + QR_SIZE*3 ; 76 bytes
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ENDIF ; /QR_OVERLAP
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grp0LLst = qrCodeLst + QR_SIZE * 0
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firstMsl = qrCodeLst + QR_SIZE * 1
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grp1Lst = qrCodeLst + NUM_FIRST + QR_SIZE * 1
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@ -150,62 +169,124 @@ qrGenerator ds QR_DEGREE
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sta random ; 3 = 14/19
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ENDM
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; Platform specific macros
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; Atari 2600 specific macros
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IF QR_OVERLAP = 0
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IF QR_DIRECT_DRAW
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;-----------------------------------------------------------
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MAC _BLACK_FUNC
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;-----------------------------------------------------------
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; blacks all function/alignment and timing pattern
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ldx #CODE_LST_SIZE-1
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ldx #CODE_LST_SIZE
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.loopBlack
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lda BlackGfx,x
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sta qrCodeLst,x
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lda BlackGfx-1,x
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sta qrCodeLst-1,x
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dex
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bpl .loopBlack
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bne .loopBlack
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; X = 0!
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ENDM
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ENDIF
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ELSE
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ELSE ; QR_OVERLAP
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;-----------------------------------------------------------
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MAC _BLACK_LEFT
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;-----------------------------------------------------------
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; blacks all function/alignment and timing pattern of the left column
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; Blacks all function/alignment and timing pattern areas of the left sprite column
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IF QR_DIRECT_DRAW
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ldx #NUM_FIRST + QR_SIZE-1-8
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.loopBlackLeft
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lda LeftBlack+8,x
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sta qrCodeLst+8,x
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dex
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bpl .loopBlackLeft
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ELSE
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; clear the bitmap column first...
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ldx #NUM_FIRST + QR_SIZE-1-8
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lda #0
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.loopBlackLeft
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sta qrCodeLst+8,x
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dex
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bpl .loopBlackLeft
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; ...then draw the pattern
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IF QR_DIRECT_DRAW
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ldy #1 ; left top pattern/vertical timing line
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ELSE
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ldy #2
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ENDIF
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.loopPattern
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lda #$ff ; fill pattern
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jsr DrawPattern
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bpl .loopPattern
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ENDIF
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ENDM
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;-----------------------------------------------------------
|
||||
MAC _BLACK_MIDDLE
|
||||
;-----------------------------------------------------------
|
||||
; blacks all function/alignment and timing pattern of the middle column
|
||||
; Blacks all function/alignment and timing pattern areas of the middle sprite column
|
||||
IF QR_DIRECT_DRAW
|
||||
ldx #QR_SIZE-1
|
||||
.loopBlackMiddle
|
||||
lda GRP1Black,x
|
||||
sta grp1Lst,x
|
||||
dex
|
||||
bpl .loopBlackMiddle
|
||||
ELSE
|
||||
; clear the bitmap column first...
|
||||
ldx #QR_SIZE-1
|
||||
lda #0
|
||||
.loopBlackMiddle
|
||||
sta grp1Lst,x
|
||||
dex
|
||||
bpl .loopBlackMiddle
|
||||
; ...then draw the pattern
|
||||
ldy #6 ; align pattern
|
||||
.loopPattern
|
||||
lda #$ff ; fill pattern
|
||||
jsr DrawPattern
|
||||
cpy #5
|
||||
bcs .loopPattern
|
||||
ENDIF
|
||||
ENDM
|
||||
|
||||
;-----------------------------------------------------------
|
||||
MAC _BLACK_RIGHT
|
||||
;-----------------------------------------------------------
|
||||
; blacks all function/alignment and timing pattern of the right column
|
||||
; Blacks all function/alignment and timing pattern areas of the right sprite column
|
||||
IF QR_DIRECT_DRAW
|
||||
ldx #QR_SIZE
|
||||
.loopBlackRight
|
||||
lda GRP0RBlack-1,x
|
||||
sta grp0RLst-1,x
|
||||
dex
|
||||
bne .loopBlackRight
|
||||
ELSE
|
||||
; clear the bitmap column first...
|
||||
ldx #QR_SIZE-1
|
||||
lda #$00
|
||||
.loopBlackRight
|
||||
sta grp0RLst,x
|
||||
dex
|
||||
bpl .loopBlackRight
|
||||
; ...then draw the pattern
|
||||
ldy #4 ; right pattern
|
||||
.loopPattern
|
||||
lda #$ff ; fill pattern
|
||||
jsr DrawPattern
|
||||
cpy #3
|
||||
bcs .loopPattern
|
||||
ldx #0
|
||||
ENDIF
|
||||
; X = 0!
|
||||
ENDM
|
||||
|
||||
ENDIF ; /QR_OVERLAP
|
||||
|
||||
IF QR_DIRECT_DRAW
|
||||
;-----------------------------------------------------------
|
||||
MAC _DRAW_FUNC
|
||||
;-----------------------------------------------------------
|
||||
; Draws all function/alignment and timing pattern over existing codewords
|
||||
ldx #CODE_LST_SIZE-1
|
||||
.loopBlack
|
||||
lda qrCodeLst,x
|
||||
@ -222,6 +303,7 @@ qrGenerator ds QR_DEGREE
|
||||
jsr InvertPixel
|
||||
ENDIF
|
||||
ENDM
|
||||
ENDIF
|
||||
|
||||
|
||||
;===============================================================================
|
||||
@ -436,7 +518,7 @@ MessageCode
|
||||
lsr
|
||||
and #$0f
|
||||
tay
|
||||
; ldy #0
|
||||
; ldy #3
|
||||
lda MessagePtrLo,y
|
||||
sta .msgPtr
|
||||
lda MessagePtrHi,y
|
||||
@ -486,7 +568,7 @@ CheckPixel SUBROUTINE
|
||||
.notMissile
|
||||
cpy #1+8
|
||||
bcs .notGRP0L
|
||||
IF QR_OVERLAP
|
||||
IF QR_OVERLAP & QR_DIRECT_DRAW
|
||||
cpx #8 ; bottom left eye (partially) shared with data!
|
||||
bcc .alwaysSet
|
||||
ENDIF
|
||||
@ -560,13 +642,14 @@ _QR_TOTAL SET _QR_TOTAL + . - BitMapCode
|
||||
FunctionModulesData
|
||||
; Platform and version specific function module data definition
|
||||
|
||||
IF QR_DIRECT_DRAW
|
||||
IF QR_VERSION = 1
|
||||
ERR ; TODO
|
||||
ENDIF
|
||||
|
||||
IF QR_VERSION = 2
|
||||
IF QR_SINGLE_MASK
|
||||
include FuncDataV2S.inc ; TODO: special pattern
|
||||
include FuncDataV2S.inc ; special pattern
|
||||
ELSE
|
||||
include FuncDataV2.inc
|
||||
ENDIF
|
||||
@ -574,6 +657,19 @@ FunctionModulesData
|
||||
|
||||
IF QR_VERSION = 3
|
||||
ERR ; TODO
|
||||
ENDIF
|
||||
ENDIF
|
||||
|
||||
FirstIdxTbl ; for 25 pixel
|
||||
ds 7, 0
|
||||
.byte $fe
|
||||
ds 7, 0
|
||||
.byte $01
|
||||
ds 7, 0
|
||||
IF QR_LEVEL = 0 || QR_LEVEL = 1
|
||||
.byte $bf ; 1st format bit is 1
|
||||
ELSE
|
||||
.byte $3f ; 1st format bit is 0
|
||||
ENDIF
|
||||
|
||||
ECHO "QR Code function modules data:", [. - FunctionModulesData]d, "bytes"
|
||||
@ -584,12 +680,11 @@ _QR_TOTAL SET _QR_TOTAL + . - FunctionModulesData
|
||||
.byte " QR Code Generator Demo V0.3 - (C)2021 Thomas Jentzsch "
|
||||
|
||||
; messages MUST NOT be longer than 26 bytes for version 2, level M!
|
||||
; Galadriel:
|
||||
MessageTbl
|
||||
Message0
|
||||
.byte "2002 - Thrust+ Platinum"
|
||||
Message1
|
||||
.byte "2001 - Jammed "
|
||||
.byte "2001 - Jammed"
|
||||
Message2
|
||||
.byte "2005 - SWOOPS!"
|
||||
Message3
|
||||
|
||||
@ -15,14 +15,14 @@ If you make use of my code or have questions, please let me know.
|
||||
- code size optimized for minimal RAM and ROM space
|
||||
- all eight mask pattern supported
|
||||
- Atari 2600 demo code (randomly generates some Atari 2600 related messages)
|
||||
- generator code for Reed-Solomon ECC generator polygons accompanied (can be integrated to compute on-the-fly)
|
||||
- generator code for Reed-Solomon ECC generator polygons accompanied (can also be integrated to compute on-the-fly)
|
||||
|
||||
## Limitations
|
||||
- only small, single block QR codes supported
|
||||
- only small (versions 1, 2 and 3), single block QR codes supported
|
||||
- only byte mode supported
|
||||
- no automatic mask pattern evaluation
|
||||
- tested only for version 2 QR codes (25x25)
|
||||
- memory organization and pixel checking/drawing has to be implemented platform specific; this includes the finder, alignment and timing pattern
|
||||
- memory organization has to be implemented platform specific
|
||||
|
||||
## License
|
||||
Copyright © 2021 Thomas Jentzsch. (GPLV3 License)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user