rmt.asx

wince下著名的视频播放器源码

;*
;* Raster Music Tracker, RMT Atari routine version 1.20051226
;* (c) Radek Sterba, Raster/C.P.U., 2002 - 2005
;* http://raster.atari.org
;*
;* Warnings:
;*
;* 1. RMT player routine needs 19 itself reserved bytes in zero page (no accessed
;*    from any other routines) as well as cca 1KB of memory before the "PLAYER"
;*    address for frequency tables and functionary variables. It's:
;*	  a) from PLAYER-$400 to PLAYER for stereo RMTplayer
;*    b) from PLAYER-$380 to PLAYER for mono RMTplayer
;*
;* 2. RMT player routine MUST (!!!) be compiled from the begin of the memory page.
;*    i.e. "PLAYER" address can be $..00 only!
;*
;* 3. Because of RMTplayer provides a lot of effects, it spent a lot of CPU time.
;*
;* STEREOMODE	equ 0				;0 => compile RMTplayer for 4 tracks mono
;*									;1 => compile RMTplayer for 8 tracks stereo
;*									;2 => compile RMTplayer for 4 tracks stereo L1 R2 R3 L4
;*									;3 => compile RMTplayer for 4 tracks stereo L1 L2 R3 R4
;*
PLAYER		equ $0600
;*
	IFT STEREOMODE==1
TRACKS		equ 8
	ELS
TRACKS		equ 4
	EIF
;*
;* RMT FEATures definitions
;* For optimizations of RMT player routine to concrete RMT modul only!
;* --------BEGIN--------
FEAT_INSTRSPEED		equ 0			;* cca 21 or 5 bytes
FEAT_CONSTANTSPEED	equ 0			;* cca 28 bytes
;* VARIOUS COMMANDS
FEAT_COMMAND1		equ 1			;* cca 8 bytes
FEAT_COMMAND2		equ 1			;* cca 20 bytes (+save 1 address in zero page) and quicker whole RMT routine
FEAT_COMMAND3		equ 1			;* cca 12 bytes
FEAT_COMMAND4		equ 1			;* cca 15 bytes
FEAT_COMMAND5		equ 1			;* cca 67 bytes
FEAT_COMMAND6		equ 1			;* cca 15 bytes
;* COMMAND7 SETNOTE (i.e. command 7 with parameter != $80)
FEAT_COMMAND7SETNOTE		equ 1		;* cca 12 bytes
;* COMMAND7 VOLUMEONLY (i.e. command 7 with parameter == $80)
FEAT_COMMAND7VOLUMEONLY		equ 1		;* cca 74 bytes
;* PORTAMENTO
FEAT_PORTAMENTO		equ 1			;* cca 138 bytes and quicker whole RMT routine
;* FILTER
FEAT_FILTER			equ 1			;* cca 179 bytes and quicker whole RMT routine
FEAT_FILTERG0L		equ	1			;* (cca 38 bytes for each)
FEAT_FILTERG1L		equ	1
FEAT_FILTERG0R		equ	1
FEAT_FILTERG1R		equ	1
;* BASS16B (i.e. distortion value 6)
FEAT_BASS16			equ 1			;* cca 194 bytes +128bytes freq table and quicker whole RMT routine
FEAT_BASS16G1L		equ 1			;* (cca 47 bytes for each)
FEAT_BASS16G3L		equ 1
FEAT_BASS16G1R		equ 1
FEAT_BASS16G3R		equ 1
;* VOLUME ONLY for particular generators
FEAT_VOLUMEONLYG0L	equ 1			;* (cca 7 bytes for each)
FEAT_VOLUMEONLYG2L	equ 1
FEAT_VOLUMEONLYG3L	equ 1
FEAT_VOLUMEONLYG0R	equ 1
FEAT_VOLUMEONLYG2R	equ 1
FEAT_VOLUMEONLYG3R	equ 1
;* TABLE TYPE (i.e. TABLETYPE=1)
FEAT_TABLETYPE		equ 1			;* cca 53 bytes and quicker whole RMT routine
;* TABLE MODE (i.e. TABLEMODE=1)
FEAT_TABLEMODE		equ 1			;* cca 16 bytes and quicker whole RMT routine
;* TABLE GO (i.e. TGO is nonzero value)
FEAT_TABLEGO		equ 1			;* cca 6 bytes and quicker whole RMT routine
;* AUDCTLMANUALSET (i.e. any MANUAL AUDCTL setting is nonzero value)
FEAT_AUDCTLMANUALSET	equ 1		;* cca 27 bytes and quicker whole RMT routine
;* VOLUME MINIMUM (i.e. VMIN is nonzero value)
FEAT_VOLUMEMIN		equ 1			;* cca 12 bytes and quicker whole RMT routine
;* --------END--------

;*
;* RMT ZeroPage addresses
	org 203
p_tis
p_instrstable	org *+2
p_trackslbstable	org *+2
p_trackshbstable	org *+2
p_song			org *+2
ns				org *+2
nr				org *+2
nt				org *+2
reg1			org *+1
reg2			org *+1
reg3			org *+1
tmp				org *+1
	IFT FEAT_COMMAND2
frqaddcmd2		org *+1
	EIF
	IFT TRACKS>4
	org PLAYER-$400
	ELS
	org PLAYER-$380
	EIF
track_variables
trackn_db	org *+TRACKS
trackn_hb	org *+TRACKS
trackn_idx	org *+TRACKS
trackn_pause	org *+TRACKS
trackn_note	org *+TRACKS
trackn_volume	org *+TRACKS
trackn_distor 	org *+TRACKS
trackn_shiftfrq	org *+TRACKS
	IFT FEAT_PORTAMENTO
trackn_portafrqc org *+TRACKS
trackn_portafrqa org *+TRACKS
trackn_portaspeed org *+TRACKS
trackn_portaspeeda org *+TRACKS
trackn_portadepth org *+TRACKS
	EIF
trackn_instrx2	org *+TRACKS
trackn_instrdb	org *+TRACKS
trackn_instrhb	org *+TRACKS
trackn_instridx	org *+TRACKS
trackn_instrlen	org *+TRACKS
trackn_instrlop	org *+TRACKS
trackn_instrreachend	org *+TRACKS
trackn_volumeslidedepth org *+TRACKS
trackn_volumeslidevalue org *+TRACKS
	IFT FEAT_VOLUMEMIN
trackn_volumemin		org *+TRACKS
	EIF
trackn_effdelay			org *+TRACKS
trackn_effvibratoa		org *+TRACKS
trackn_effvibratobeg	org *+TRACKS
trackn_effvibratoend	org *+TRACKS
trackn_effshift		org *+TRACKS
trackn_tabletypespeed org *+TRACKS
	IFT FEAT_TABLEMODE
trackn_tablemode	org *+TRACKS
	EIF
trackn_tablenote	org *+TRACKS
trackn_tablea		org *+TRACKS
trackn_tableend		org *+TRACKS
	IFT FEAT_TABLEGO
trackn_tablelop		org *+TRACKS
	EIF
trackn_tablespeeda	org *+TRACKS
trackn_command		org *+TRACKS
	IFT FEAT_BASS16
trackn_outnote		org *+TRACKS
	EIF
	IFT FEAT_FILTER
trackn_filter		org *+TRACKS
	EIF
trackn_audf	org *+TRACKS
trackn_audc	org *+TRACKS
	IFT FEAT_AUDCTLMANUALSET
trackn_audctl	org *+TRACKS
	EIF
	IFT FEAT_CONSTANTSPEED==0
v_speed			org *+1
	EIF
v_aspeed		org *+1
	IFT FEAT_INSTRSPEED==0||FEAT_INSTRSPEED>1
v_ainstrspeed	org *+1
	EIF
v_abeat			org *+1
track_endvariables
		org PLAYER-$100-$140-$30
INSTRPAR	equ 12
tabbeganddistor
 dta frqtabpure-frqtab,$00
 dta frqtabpure-frqtab,$20
 dta frqtabpure-frqtab,$40
 dta frqtabbass1-frqtab,$c0
 dta frqtabpure-frqtab,$80
 dta frqtabpure-frqtab,$a0
 dta frqtabbass1-frqtab,$c0
 dta frqtabbass2-frqtab,$c0
vibtabbeg dta 0,vib1-vib0,vib2-vib0,vib3-vib0,vibx-vib0
vib0	dta 0
vib1	dta 1,-1,-1,1
vib2	dta 1,0,-1,-1,0,1
vib3	dta 1,1,0,-1,-1,-1,-1,0,1,1
vibx
:PLAYER-$100-$140-* dta 0
;		org PLAYER-$100-$140
	IFT FEAT_BASS16
frqtabbasslo
	dta $F2,$33,$96,$E2,$38,$8C,$00,$6A,$E8,$6A,$EF,$80,$08,$AE,$46,$E6
	dta $95,$41,$F6,$B0,$6E,$30,$F6,$BB,$84,$52,$22,$F4,$C8,$A0,$7A,$55
	dta $34,$14,$F5,$D8,$BD,$A4,$8D,$77,$60,$4E,$38,$27,$15,$06,$F7,$E8
	dta $DB,$CF,$C3,$B8,$AC,$A2,$9A,$90,$88,$7F,$78,$70,$6A,$64,$5E,$00
	EIF
		org PLAYER-$100-$100
frqtab
	ERT [<frqtab]!=0	;* frqtab must begin at the memory page bound! (i.e. $..00 address)
frqtabbass1
	dta $BF,$B6,$AA,$A1,$98,$8F,$89,$80,$F2,$E6,$DA,$CE,$BF,$B6,$AA,$A1
	dta $98,$8F,$89,$80,$7A,$71,$6B,$65,$5F,$5C,$56,$50,$4D,$47,$44,$3E
	dta $3C,$38,$35,$32,$2F,$2D,$2A,$28,$25,$23,$21,$1F,$1D,$1C,$1A,$18
	dta $17,$16,$14,$13,$12,$11,$10,$0F,$0E,$0D,$0C,$0B,$0A,$09,$08,$07
frqtabbass2
	dta $FF,$F1,$E4,$D8,$CA,$C0,$B5,$AB,$A2,$99,$8E,$87,$7F,$79,$73,$70
	dta $66,$61,$5A,$55,$52,$4B,$48,$43,$3F,$3C,$39,$37,$33,$30,$2D,$2A
	dta $28,$25,$24,$21,$1F,$1E,$1C,$1B,$19,$17,$16,$15,$13,$12,$11,$10
	dta $0F,$0E,$0D,$0C,$0B,$0A,$09,$08,$07,$06,$05,$04,$03,$02,$01,$00
frqtabpure
	dta $F3,$E6,$D9,$CC,$C1,$B5,$AD,$A2,$99,$90,$88,$80,$79,$72,$6C,$66
	dta $60,$5B,$55,$51,$4C,$48,$44,$40,$3C,$39,$35,$32,$2F,$2D,$2A,$28
	dta $25,$23,$21,$1F,$1D,$1C,$1A,$18,$17,$16,$14,$13,$12,$11,$10,$0F
	dta $0E,$0D,$0C,$0B,$0A,$09,$08,$07,$06,$05,$04,$03,$02,$01,$00,$00
	IFT FEAT_BASS16
frqtabbasshi
	dta $0D,$0D,$0C,$0B,$0B,$0A,$0A,$09,$08,$08,$07,$07,$07,$06,$06,$05
	dta $05,$05,$04,$04,$04,$04,$03,$03,$03,$03,$03,$02,$02,$02,$02,$02
	dta $02,$02,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$00,$00
	dta $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
	EIF
		org PLAYER-$0100
volumetab
	dta $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
	dta $00,$00,$00,$00,$00,$00,$00,$00,$01,$01,$01,$01,$01,$01,$01,$01
	dta $00,$00,$00,$00,$01,$01,$01,$01,$01,$01,$01,$01,$02,$02,$02,$02
	dta $00,$00,$00,$01,$01,$01,$01,$01,$02,$02,$02,$02,$02,$03,$03,$03
	dta $00,$00,$01,$01,$01,$01,$02,$02,$02,$02,$03,$03,$03,$03,$04,$04
	dta $00,$00,$01,$01,$01,$02,$02,$02,$03,$03,$03,$04,$04,$04,$05,$05
	dta $00,$00,$01,$01,$02,$02,$02,$03,$03,$04,$04,$04,$05,$05,$06,$06
	dta $00,$00,$01,$01,$02,$02,$03,$03,$04,$04,$05,$05,$06,$06,$07,$07
	dta $00,$01,$01,$02,$02,$03,$03,$04,$04,$05,$05,$06,$06,$07,$07,$08
	dta $00,$01,$01,$02,$02,$03,$04,$04,$05,$05,$06,$07,$07,$08,$08,$09
	dta $00,$01,$01,$02,$03,$03,$04,$05,$05,$06,$07,$07,$08,$09,$09,$0A
	dta $00,$01,$01,$02,$03,$04,$04,$05,$06,$07,$07,$08,$09,$0A,$0A,$0B
	dta $00,$01,$02,$02,$03,$04,$05,$06,$06,$07,$08,$09,$0A,$0A,$0B,$0C
	dta $00,$01,$02,$03,$03,$04,$05,$06,$07,$08,$09,$0A,$0A,$0B,$0C,$0D
	dta $00,$01,$02,$03,$04,$05,$06,$07,$07,$08,$09,$0A,$0B,$0C,$0D,$0E
	dta $00,$01,$02,$03,$04,$05,$06,$07,$08,$09,$0A,$0B,$0C,$0D,$0E,$0F
	org PLAYER
;*
;* Set of RMT main vectors:
;*
RASTERMUSICTRACKER
	jmp rmt_init
	jmp rmt_play
	jmp rmt_p3
	jmp rmt_silence
	jmp SetPokey
rmt_init
	stx ns
	sty ns+1
	pha
	IFT track_endvariables-track_variables>255
	ldy #0
	tya
ri0	sta track_variables,y
	sta track_endvariables-$100,y
	iny
	bne ri0
	ELS
	ldy #track_endvariables-track_variables
	lda #0
ri0	sta track_variables-1,y
	dey
	bne ri0
	EIF
	ldy #4
	lda (ns),y
	sta v_maxtracklen
	iny
	IFT FEAT_CONSTANTSPEED==0
	lda (ns),y
	sta v_speed
	EIF
	IFT FEAT_INSTRSPEED==0
	iny
	lda (ns),y
	sta v_instrspeed
	sta v_ainstrspeed
	ELI FEAT_INSTRSPEED>1
	lda #FEAT_INSTRSPEED
	sta v_ainstrspeed
	EIF
	ldy #8
ri1	lda (ns),y
	sta p_tis-8,y
	iny
	cpy #8+8
	bne ri1
	pla
	pha
	IFT TRACKS>4
	asl @
	asl @
	asl @
	clc
	adc p_song
	sta p_song
	pla
	php
	and #$e0
	asl @
	rol @
	rol @
	rol @
	ELS
	asl @
	asl @
	clc
	adc p_song
	sta p_song
	pla
	php
	and #$c0
	asl @
	rol @
	rol @
	EIF
	plp
	adc p_song+1
	sta p_song+1
	jsr GetSongLineTrackLineInitOfNewSetInstrumentsOnlyRmtp3
rmt_silence
	IFT STEREOMODE>0
	lda #0
	sta $d208
	sta $d218
	ldy #3
	sty $d20f
	sty $d21f
	ldy #8
si1	sta $d200,y
	sta $d210,y
	dey
	bpl si1
	ELS
	lda #0
	sta $d208
	ldy #3
	sty $d20f
	ldy #8
si1	sta $d200,y
	dey
	bpl si1
	EIF
	IFT FEAT_INSTRSPEED==0
	lda v_instrspeed
	ELS
	lda #FEAT_INSTRSPEED
	EIF
	rts
GetSongLineTrackLineInitOfNewSetInstrumentsOnlyRmtp3
GetSongLine
	ldx #0
	stx v_abeat
nn0
nn1	txa
	tay
	lda (p_song),y
	cmp #$fe
	bcs nn2
	tay
	lda (p_trackslbstable),y
	sta trackn_db,x
	lda (p_trackshbstable),y
nn1a sta trackn_hb,x
	lda #0
	sta trackn_idx,x
	lda #1
nn1a2 sta trackn_pause,x
	lda #$80
	sta trackn_instrx2,x
	inx
xtracks01	cpx #TRACKS
	bne nn1
	lda p_song
	clc
xtracks02	adc #TRACKS
	sta p_song
	bcc GetTrackLine
	inc p_song+1
nn1b
	jmp GetTrackLine
nn2
	beq nn3
nn2a
	lda #0
	beq nn1a2
nn3
	ldy #2
	lda (p_song),y
	tax
	iny
	lda (p_song),y
	sta p_song+1
	stx p_song
	ldx #0
	beq nn0
GetTrackLine
oo0
oo0a
	IFT FEAT_CONSTANTSPEED==0
	lda v_speed
	sta v_bspeed
	EIF
	ldx #-1
oo1
	inx
	dec trackn_pause,x
	bne oo1x
oo1b
	lda trackn_db,x
	sta ns
	lda trackn_hb,x
	sta ns+1
oo1i
	ldy trackn_idx,x
	inc trackn_idx,x
	lda (ns),y
	sta reg1
	and #$3f
	cmp #61
	beq oo1a
	bcs oo2
	sta trackn_note,x
	IFT FEAT_BASS16
	sta trackn_outnote,x
	EIF
	iny
	lda (ns),y
	lsr @
	and #$3f*2
	sta trackn_instrx2,x
oo1a
	lda #1
	sta trackn_pause,x
	ldy trackn_idx,x
	inc trackn_idx,x
	lda (ns),y
	lsr @
	ror reg1
	lsr @
	ror reg1
	lda reg1
	and #$f0
	sta trackn_volume,x
oo1x
xtracks03sub1	cpx #TRACKS-1
	bne oo1
	IFT FEAT_CONSTANTSPEED==0
	lda #$ff
v_bspeed equ *-1
	sta v_speed
	ELS
	lda #FEAT_CONSTANTSPEED
	EIF
	sta v_aspeed
	jmp InitOfNewSetInstrumentsOnly
oo2
	cmp #63
	beq oo63
	lda reg1
	and #$c0
	beq oo62_b
	asl @
	rol @
	rol @
	sta trackn_pause,x
	jmp oo1x
oo62_b
	iny
	lda (ns),y
	sta trackn_pause,x
	inc trackn_idx,x
	jmp oo1x
oo63
	lda reg1
	IFT FEAT_CONSTANTSPEED==0
	bmi oo63_1X
	iny
	lda (ns),y
	sta v_bspeed
	inc trackn_idx,x
	jmp oo1i
oo63_1X
	EIF
	cmp #255
	beq oo63_11
	iny
	lda (ns),y
	sta trackn_idx,x
	jmp oo1i
oo63_11
	jmp GetSongLine
p2xrmtp3	jmp rmt_p3
p2x0 dex
	 bmi p2xrmtp3
InitOfNewSetInstrumentsOnly
p2x1 ldy trackn_instrx2,x
	bmi p2x0
SetUpInstrumentY2
	lda (p_instrstable),y
	sta trackn_instrdb,x
	sta nt
	iny
	lda (p_instrstable),y
	sta trackn_instrhb,x
	sta nt+1
	IFT FEAT_FILTER
	lda #1
	sta trackn_filter,x
	EIF
	IFT FEAT_TABLEGO
	IFT FEAT_FILTER
	tay
	ELS
	ldy #1
	EIF
	lda (nt),y
	sta trackn_tablelop,x
	iny
	ELS
	ldy #2
	EIF
	lda (nt),y
	sta trackn_instrlen,x
	iny
	lda (nt),y
	sta trackn_instrlop,x
	iny
	lda (nt),y
	sta trackn_tabletypespeed,x
	IFT FEAT_TABLETYPE||FEAT_TABLEMODE
	and #$3f
	EIF
	sta trackn_tablespeeda,x
	IFT FEAT_TABLEMODE
	lda (nt),y
	and #$40
	sta trackn_tablemode,x
	EIF
	IFT FEAT_AUDCTLMANUALSET
	iny
	lda (nt),y
	sta trackn_audctl,x
	iny
	ELS
	ldy #6
	EIF
	lda (nt),y
	sta trackn_volumeslidedepth,x
	IFT FEAT_VOLUMEMIN
	iny
	lda (nt),y
	sta trackn_volumemin,x
	iny
	ELS
	ldy #8
	EIF
	lda (nt),y
	sta trackn_effdelay,x
	iny
	lda (nt),y
	tay
	lda vibtabbeg,y
	sta trackn_effvibratoa,x
	sta trackn_effvibratobeg,x
	lda vibtabbeg+1,y
	sta trackn_effvibratoend,x
	ldy #10
	lda (nt),y
	sta trackn_effshift,x
	lda #128
	sta trackn_volumeslidevalue,x
	sta trackn_instrx2,x
	asl @
	sta trackn_instrreachend,x
	sta trackn_shiftfrq,x
	tay
	lda (nt),y
	sta trackn_tableend,x
	adc #0
	sta trackn_instridx,x
	lda #INSTRPAR
	sta trackn_tablea,x
	tay
	lda (nt),y
	sta trackn_tablenote,x
xata_rtshere
	jmp p2x0
rmt_play
rmt_p0
	jsr SetPokey
rmt_p1
	IFT FEAT_INSTRSPEED==0||FEAT_INSTRSPEED>1
	dec v_ainstrspeed
	bne rmt_p3
	EIF
	IFT FEAT_INSTRSPEED==0
	lda #$ff
v_instrspeed	equ *-1
	sta v_ainstrspeed
	ELI FEAT_INSTRSPEED>1
	lda #FEAT_INSTRSPEED
	sta v_ainstrspeed
	EIF
rmt_p2
	dec v_aspeed
	bne rmt_p3
	inc v_abeat
	lda v_abeat
	cmp #$ff
v_maxtracklen equ *-1
	beq p2o3
	jmp GetTrackLine
p2o3
	jmp GetSongLineTrackLineInitOfNewSetInstrumentsOnlyRmtp3
go_ppnext	jmp ppnext
rmt_p3
	lda #>frqtab
	sta nr+1
xtracks05sub1	ldx #TRACKS-1
pp1
	lda trackn_instrhb,x
	beq go_ppnext
	sta ns+1
	lda trackn_instrdb,x
	sta ns
	ldy trackn_instridx,x
	lda (ns),y
	sta reg1
	iny
	lda (ns),y
	sta reg2
	iny
	lda (ns),y
	sta reg3
	iny
	tya
	cmp trackn_instrlen,x
	bcc pp2
	beq pp2
	lda #$80
	sta trackn_instrreachend,x
pp1b
	lda trackn_instrlop,x
pp2	sta trackn_instridx,x
	lda reg1
	IFT TRACKS>4
	cpx #4
	bcc pp2s
	lsr @
	lsr @
	lsr @
	lsr @
pp2s
	EIF
	and #$0f
	ora trackn_volume,x
	tay
	lda volumetab,y
	sta tmp
	lda reg2
	and #$0e
	tay