A2osX/BMP2PIX.S.txt
2018-11-19 08:43:00 +01:00

368 lines
6.8 KiB
Plaintext
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

NEW
PREFIX
AUTO 4,1
.LIST OFF
.OP 65C02
.OR $2000
.TF ROOT/BMP2PIX
*--------------------------------------
.INB INC/MACROS.I
.INB INC/A2OSX.I
.INB INC/GUI.I
.INB 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 ArgV
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 #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
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 O.RDONLY
>LDYA ZPPtr1
>SYSCALL LoadFile
bcs CS.INIT.RTS
>STYA ZPInputBufLen
>PUSHYA
txa
>STA.G hInputBuf
>SYSCALL GetMemPtr
>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 #E.IBIN
sec
rts
*--------------------------------------
CS.INIT.CREATEOUTPUT
>PUSHWI 0 Aux type
>PUSHBI $CB PIX Type
>PUSHBI O.WRONLY+O.CREATE
>LDYA 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
>PUSHWI S.BM
>PUSHEA.G PIX.Header
>LDA.G hOutputFile
>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 ZPPIXRowBytes
>PUSHW ZPBufPtr
>LDA.G hOutputFile
>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
.1 >LDA.G hOutputFile
beq .8
>SYSCALL fclose
.8 clc
rts
*--------------------------------------
CS.END
*--------------------------------------
.INB 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"
*--------------------------------------
* LOWRES Patette : https://comp.sys.apple2.narkive.com/lTSrj2ZI/apple-ii-colour-rgb
*--------------------------------------
0 #000000
1 #e31e60
2 #604ebd
3 #ff44fd
4 #00a360
5 #9c9c9c
6 #14cffd
7 #d0c3ff
8 #607203
9 #ff6a3c
a #9c9c9c (yes it is the same as #5!)
b #ffa0d0
c #14f53c
d #d0dd8d
e #72ffd0
f #ffffff
*--------------------------------------
.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