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BMP2PIX.S.txt
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NEW
PREFIX /A2OSX.BUILD
AUTO 4,1
.LIST OFF
.OP 65C02
.OR $2000
.TF /A2OSX.BUILD/ROOT/BMP2PIX
*--------------------------------------
.INB /A2OSX.BUILD/INC/MACROS.I
.INB /A2OSX.BUILD/INC/A2OSX.I
.INB /A2OSX.BUILD/INC/GUI.I
.INB /A2OSX.BUILD/INC/LIBGUI.I
*--------------------------------------
ZPPTR1 .EQ ZPBIN
ZPInputBufPtr .EQ ZPBIN+2
ZPInputBufLen .EQ ZPBIN+4
ZPInputDataPtr .EQ ZPBIN+6
ZPBMPRowBytes .EQ ZPBIN+8
ZPPIXRowBytes .EQ ZPBIN+10
ZPBufPtr .EQ ZPBIN+12
ZPLineCount .EQ ZPBIN+14
*--------------------------------------
* File Header (16 Bytes)
*--------------------------------------
CS.START cld
jmp (.1,x)
.DA #$61 6502,Level 1 (65c02)
.DA #1 BIN Layout Version 1
.DA 0
.DA CS.END-CS.START CS
.DA DS.END-DS.START DS
.DA #64 SS
.DA #16 ZP
.DA 0
*--------------------------------------
* Relocation Table
*--------------------------------------
.1 .DA CS.INIT
.DA CS.RUN
.DA CS.DOEVENT
.DA CS.QUIT
L.MSG.USAGE .DA MSG.USAGE
L.MSG.FILE.OK .DA MSG.FILE.OK
L.MSG.HEADER.OK .DA MSG.HEADER.OK
L.MSG.HEADER.KO .DA MSG.HEADER.KO
L.MSG.DONE .DA MSG.DONE
.DA 0
*--------------------------------------
CS.INIT
.1 >INC.G ArgCount
>SYSCALL GetArg.A
bcs .7
>STYA ZPPtr1
lda (ZPPtr1)
cmp #'-'
bne .4
ldy #1
lda (ZPPtr1),y
ldx OptionList
.2 cmp OptionList,x
beq .3
dex
bne .2
.99 >LDYA L.MSG.USAGE
>SYSCALL printf
lda #K.E.SYN
sec
rts
.3 ldy OptionVars-1,x
lda #$80
sta (pData),y
bra .1
.4 >LDA.G hInputBuf
bne .5
jsr CS.INIT.OPENINPUT
bcc .1 scan for any other args
rts
.5 >LDA.G hOutputFile
bne .99
jsr CS.INIT.CREATEOUTPUT
bcc .1 scan for any other args
rts
.7 >LDA.G hOutputFile
beq .99
>LDYAI 256
>SYSCALL GetMem.YA
bcs CS.INIT.RTS
>STYA ZPBufPtr
txa
>STA.G hBuf
.8 clc
CS.INIT.RTS rts
*--------------------------------------
CS.INIT.OPENINPUT
>PUSHWI 0 Aux type
>PUSHBI 0 Type
>PUSHBI SYS.FOpen.R
>PUSHW ZPPtr1
>SYSCALL LoadFile
bcs CS.INIT.RTS
>STYA ZPInputBufLen
>PUSHYA
txa
>STA.G hInputBuf
>SYSCALL GetMemPtr.A
>STYA ZPInputBufPtr
>LDYA L.MSG.FILE.OK
>SYSCALL printf
lda (ZPInputBufPtr)
cmp #'B'
bne .99
ldy #1
lda (ZPInputBufPtr),y
cmp #'M'
bne .99
ldy #$1C BBP LO
lda (ZPInputBufPtr),y
cmp #1
bne .99
iny BBP HI
lda (ZPInputBufPtr),y
bne .99
ldy #$16 H LO
lda (ZPInputBufPtr),y
>STA.G PIX.Header+S.BM.H
pha
eor #$ff
sta ZPLineCount
ldy #$17 H HI
lda (ZPInputBufPtr),y
>STA.G PIX.Header+S.BM.H+1
>PUSHA
eor #$ff
sta ZPLineCount+1
pla
>PUSHA
ldy #$12 W LO
lda (ZPInputBufPtr),y
>STA.G PIX.Header+S.BM.W
pha
ldy #$13 W HI
lda (ZPInputBufPtr),y
>STA.G PIX.Header+S.BM.W+1
>PUSHA
pla
>PUSHA
>LDYA L.MSG.HEADER.OK
>SYSCALL printf
clc
rts
.99 >LDYA L.MSG.HEADER.KO
>SYSCALL printf
lda #K.E.IBIN
sec
rts
*--------------------------------------
CS.INIT.CREATEOUTPUT
>PUSHWI 0 Aux type
>PUSHBI $CB PIX Type
>PUSHBI SYS.FOpen.W+SYS.FOpen.X
>PUSHW ZPPtr1
>SYSCALL FOpen
bcs .9
>STA.G hOutputFile
.9 rts
*--------------------------------------
CS.RUN lda #S.BM.F.BBP1
>STA.G PIX.Header+S.BM.F
>LDA.G PIX.Header+S.BM.W
sta ZPBMPRowBytes
sta ZPPIXRowBytes
iny
lda (pData),y
sta ZPBMPRowBytes+1
sta ZPPIXRowBytes+1
lda ZPBMPRowBytes
and #%00011111
beq .1
lda ZPBMPRowBytes
and #%11100000
clc
adc #%00100000
bcc .1
inc ZPBMPRowBytes+1
.1 lsr ZPBMPRowBytes+1
ror
lsr ZPBMPRowBytes+1
ror
lsr ZPBMPRowBytes+1
ror
sta ZPBMPRowBytes
lda ZPPIXRowBytes
and #%00000111
beq .2
lda ZPPIXRowBytes
and #%11111000
clc
adc #%00001000
bcc .2
inc ZPPIXRowBytes+1
.2 lsr ZPPIXRowBytes+1
ror
lsr ZPPIXRowBytes+1
ror
lsr ZPPIXRowBytes+1
ror
sta ZPPIXRowBytes
>STA.G PIX.Header+S.BM.RowBytes
lda ZPInputBufPtr
clc
adc ZPInputBufLen
sta ZPInputDataPtr
lda ZPInputBufPtr+1
adc ZPInputBufLen+1
sta ZPInputDataPtr+1
>PUSHEA.G PIX.Header
>PUSHWI S.BM
>LDA.G hOutputFile
>PUSHA
>SYSCALL FWrite
bcs CS.RUN.RTS
CS.RUN.LOOP inc ZPLineCount
bne .1
inc ZPLineCount+1
beq .8
.1 lda ZPInputDataPtr
sec
sbc ZPBMPRowBytes
sta ZPInputDataPtr
lda ZPInputDataPtr+1
sbc ZPBMPRowBytes+1
sta ZPInputDataPtr+1
>LDYA ZPBufPtr
>STYA ZPPTR1
ldy #0
.2 lda (ZPInputDataPtr),y
tax
lda TWIST,x
sta (ZPPTR1)
inc ZPPTR1
bne .3
inc ZPPTR1+1
.3 iny
cpy ZPPIXRowBytes
bne .2
>PUSHW ZPBufPtr
>PUSHW ZPPIXRowBytes
>LDA.G hOutputFile
>PUSHA
>SYSCALL FWrite
bcs CS.RUN.RTS
bra CS.RUN.LOOP
.8 >LDYA L.MSG.DONE
>SYSCALL printf
lda #0
sec
CS.RUN.RTS rts
*--------------------------------------
CS.DOEVENT sec
rts
*--------------------------------------
CS.QUIT >LDA.G hBuf
beq .1
>SYSCALL FreeMem.A
.1 >LDA.G hOutputFile
beq .8
>SYSCALL FClose.A
.8 clc
rts
*--------------------------------------
CS.END
*--------------------------------------
.INB /A2OSX.BUILD/ROOT/X.TWIST.G
*--------------------------------------
OptionList >PSTR "Vv"
OptionVars .DA #bVerbose,#bVerbose
MSG.USAGE .AZ "Usage : BMP2PIX BMP-File \r\n -V : Verbose Mode\r\n"
MSG.FILE.OK .AZ "BMP Loaded, %D Bytes Read\r\n"
MSG.HEADER.OK .AZ "BMP Size : %D x %D pixels\r\n"
MSG.HEADER.KO .AZ "Invalid Input File Format\r\n"
MSG.DONE .AZ "All Done!!!\r\n"
*--------------------------------------
.DUMMY
.OR 0
DS.START
PIX.Header .BS S.BM
ArgCount .BS 1
hInputBuf .BS 1
hOutputFile .BS 1
bVerbose .BS 1
hBuf .BS 1
DS.END
.ED
*--------------------------------------
MAN
SAVE /A2OSX.BUILD/ROOT/BMP2PIX.S
ASM