mirror of
https://github.com/SickGear/SickGear.git
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254 lines
13 KiB
Python
254 lines
13 KiB
Python
"""
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ZSNES Save State Parser (v143 only currently)
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Author: Jason Gorski
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Creation date: 2006-09-15
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"""
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from hachoir.parser import Parser
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from hachoir.field import (FieldSet, StaticFieldSet,
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UInt8, UInt16, UInt32,
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String, PaddingBytes, Bytes, RawBytes)
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from hachoir.core.endian import LITTLE_ENDIAN
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class ZSTHeader(StaticFieldSet):
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format = (
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(String, "zs_mesg", 26, "File header", {"charset": "ASCII"}),
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(UInt8, "zs_mesglen", "File header string len"),
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(UInt8, "zs_version", "Version minor #"),
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(UInt8, "curcyc", "cycles left in scanline"),
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(UInt16, "curypos", "current y position"),
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(UInt8, "cacheud", "update cache every ? frames"),
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(UInt8, "ccud", "current cache increment"),
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(UInt8, "intrset", "interrupt set"),
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(UInt8, "cycpl", "cycles per scanline"),
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(UInt8, "cycphb", "cycles per hblank"),
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(UInt8, "spcon", "SPC Enable (1=enabled)"),
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(UInt16, "stackand", "value to and stack to keep it from going to the wrong area"),
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(UInt16, "stackor", "value to or stack to keep it from going to the wrong area"),
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)
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class ZSTcpu(StaticFieldSet):
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format = (
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(UInt16, "xat"),
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(UInt8, "xdbt"),
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(UInt8, "xpbt"),
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(UInt16, "xst"),
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(UInt16, "xdt"),
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(UInt16, "xxt"),
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(UInt16, "xyt"),
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(UInt8, "xp"),
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(UInt8, "xe"),
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(UInt16, "xpc"),
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(UInt8, "xirqb", "which bank the irqs start at"),
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(UInt8, "debugger", "Start with debugger (1: yes, 0: no)"),
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(UInt32, "Curtable" "Current table address"),
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(UInt8, "curnmi", "if in NMI (1=yes)"),
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(UInt32, "cycpbl", "percentage left of CPU/SPC to run (3.58 = 175)"),
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(UInt32, "cycpblt", "percentage of CPU/SPC to run"),
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)
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class ZSTppu(FieldSet):
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static_size = 3019 * 8
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def createFields(self):
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yield UInt8(self, "sndrot", "rotates to use A,X or Y for sound skip")
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yield UInt8(self, "sndrot2", "rotates a random value for sound skip")
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yield UInt8(self, "INTEnab", "enables NMI(7)/VIRQ(5)/HIRQ(4)/JOY(0)")
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yield UInt8(self, "NMIEnab", "controlled in e65816 loop. Sets to 81h")
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yield UInt16(self, "VIRQLoc", "VIRQ Y location")
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yield UInt8(self, "vidbright", "screen brightness 0..15")
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yield UInt8(self, "previdbr", "previous screen brightness")
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yield UInt8(self, "forceblnk", "force blanking on/off ($80=on)")
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yield UInt32(self, "objptr", "pointer to object data in VRAM")
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yield UInt32(self, "objptrn", "pointer2 to object data in VRAM")
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yield UInt8(self, "objsize1", "1=8dot, 4=16dot, 16=32dot, 64=64dot")
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yield UInt8(self, "objsize2", "large object size")
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yield UInt8(self, "objmovs1", "number of bytes to move/paragraph")
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yield UInt16(self, "objadds1", "number of bytes to add/paragraph")
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yield UInt8(self, "objmovs2", "number of bytes to move/paragraph")
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yield UInt16(self, "objadds2", "number of bytes to add/paragraph")
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yield UInt16(self, "oamaddrt", "oam address")
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yield UInt16(self, "oamaddrs", "oam address at beginning of vblank")
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yield UInt8(self, "objhipr", "highest priority object #")
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yield UInt8(self, "bgmode", "graphics mode 0..7")
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yield UInt8(self, "bg3highst", "is 1 if background 3 has the highest priority")
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yield UInt8(self, "bgtilesz", "0=8x8, 1=16x16 bit0=bg1, bit1=bg2, etc.")
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yield UInt8(self, "mosaicon", "mosaic on, bit 0=bg1, bit1=bg2, etc.")
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yield UInt8(self, "mosaicsz", "mosaic size in pixels")
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yield UInt16(self, "bg1ptr", "pointer to background1")
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yield UInt16(self, "bg2ptr", "pointer to background2")
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yield UInt16(self, "bg3ptr", "pointer to background3")
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yield UInt16(self, "bg4ptr", "pointer to background4")
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yield UInt16(self, "bg1ptrb", "pointer to background1")
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yield UInt16(self, "bg2ptrb", "pointer to background2")
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yield UInt16(self, "bg3ptrb", "pointer to background3")
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yield UInt16(self, "bg4ptrb", "pointer to background4")
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yield UInt16(self, "bg1ptrc", "pointer to background1")
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yield UInt16(self, "bg2ptrc", "pointer to background2")
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yield UInt16(self, "bg3ptrc", "pointer to background3")
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yield UInt16(self, "bg4ptrc", "pointer to background4")
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yield UInt16(self, "bg1ptrd", "pointer to background1")
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yield UInt16(self, "bg2ptrd", "pointer to background2")
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yield UInt16(self, "bg3ptrd", "pointer to background3")
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yield UInt16(self, "bg4ptrd", "pointer to background4")
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yield UInt8(self, "bg1scsize", "bg #1 screen size (0=1x1,1=1x2,2=2x1,3=2x2)")
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yield UInt8(self, "bg2scsize", "bg #2 screen size (0=1x1,1=1x2,2=2x1,3=2x2)")
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yield UInt8(self, "bg3scsize", "bg #3 screen size (0=1x1,1=1x2,2=2x1,3=2x2)")
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yield UInt8(self, "bg4scsize", "bg #4 screen size (0=1x1,1=1x2,2=2x1,3=2x2)")
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yield UInt16(self, "bg1objptr", "pointer to tiles in background1")
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yield UInt16(self, "bg2objptr", "pointer to tiles in background2")
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yield UInt16(self, "bg3objptr", "pointer to tiles in background3")
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yield UInt16(self, "bg4objptr", "pointer to tiles in background4")
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yield UInt16(self, "bg1scrolx", "background 1 x position")
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yield UInt16(self, "bg2scrolx", "background 2 x position")
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yield UInt16(self, "bg3scrolx", "background 3 x position")
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yield UInt16(self, "bg4scrolx", "background 4 x position")
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yield UInt16(self, "bg1sx", "Temporary Variable for Debugging purposes")
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yield UInt16(self, "bg1scroly", "background 1 y position")
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yield UInt16(self, "bg2scroly", "background 2 y position")
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yield UInt16(self, "bg3scroly", "background 3 y position")
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yield UInt16(self, "bg4scroly", "background 4 y position")
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yield UInt16(self, "addrincr", "vram increment (2,64,128,256)")
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yield UInt8(self, "vramincr", "0 = increment at 2118/2138, 1 = 2119,213A")
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yield UInt8(self, "vramread", "0 = address set, 1 = already read once")
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yield UInt32(self, "vramaddr", "vram address")
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yield UInt16(self, "cgaddr", "cg (palette)")
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yield UInt8(self, "cgmod", "if cgram is modified or not")
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yield UInt16(self, "scrnon", "main & sub screen on")
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yield UInt8(self, "scrndist", "which background is disabled")
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yield UInt16(self, "resolutn", "screen resolution")
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yield UInt8(self, "multa", "multiplier A")
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yield UInt16(self, "diva", "divisor C")
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yield UInt16(self, "divres", "quotent of divc/divb")
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yield UInt16(self, "multres", "result of multa * multb/remainder of divc/divb")
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yield UInt16(self, "latchx", "latched x value")
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yield UInt16(self, "latchy", "latched y value")
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yield UInt8(self, "latchxr", "low or high byte read for x value")
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yield UInt8(self, "latchyr", "low or high byte read for y value")
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yield UInt8(self, "frskipper", "used to control frame skipping")
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yield UInt8(self, "winl1", "window 1 left position")
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yield UInt8(self, "winr1", "window 1 right position")
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yield UInt8(self, "winl2", "window 2 left position")
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yield UInt8(self, "winr2", "window 2 right position")
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yield UInt8(self, "winbg1en", "Win1 on (IN/OUT) or Win2 on (IN/OUT) on BG1")
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yield UInt8(self, "winbg2en", "Win1 on (IN/OUT) or Win2 on (IN/OUT) on BG2")
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yield UInt8(self, "winbg3en", "Win1 on (IN/OUT) or Win2 on (IN/OUT) on BG3")
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yield UInt8(self, "winbg4en", "Win1 on (IN/OUT) or Win2 on (IN/OUT) on BG4")
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yield UInt8(self, "winobjen", "Win1 on (IN/OUT) or Win2 on (IN/OUT) on sprites")
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yield UInt8(self, "wincolen", "Win1 on (IN/OUT) or Win2 on (IN/OUT) on backarea")
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yield UInt8(self, "winlogica", "Window logic type for BG1 to 4")
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yield UInt8(self, "winlogicb", "Window logic type for Sprites and Backarea")
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yield UInt8(self, "winenabm", "Window logic enable for main screen")
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yield UInt8(self, "winenabs", "Window logic enable for sub sceen")
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yield UInt8(self, "mode7set", "mode 7 settings")
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yield UInt16(self, "mode7A", "A value for Mode 7")
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yield UInt16(self, "mode7B", "B value for Mode 7")
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yield UInt16(self, "mode7C", "C value for Mode 7")
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yield UInt16(self, "mode7D", "D value for Mode 7")
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yield UInt16(self, "mode7X0", "Center X for Mode 7")
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yield UInt16(self, "mode7Y0", "Center Y for Mode 7")
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yield UInt8(self, "JoyAPos", "Old-Style Joystick Read Position for Joy 1 & 3")
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yield UInt8(self, "JoyBPos", "Old-Style Joystick Read Position for Joy 2 & 4")
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yield UInt32(self, "compmult", "Complement Multiplication for Mode 7")
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yield UInt8(self, "joyalt", "temporary joystick alternation")
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yield UInt32(self, "wramrwadr", "continuous read/write to wram address")
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yield RawBytes(self, "dmadata", 129, "dma data (written from ports 43xx)")
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yield UInt8(self, "irqon", "if IRQ has been called (80h) or not (0)")
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yield UInt8(self, "nexthdma", "HDMA data to execute once vblank ends")
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yield UInt8(self, "curhdma", "Currently executed hdma")
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yield RawBytes(self, "hdmadata", 152, "4 dword register addresses, # bytes to transfer/line, address increment (word)")
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yield UInt8(self, "hdmatype", "if first time executing hdma or not")
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yield UInt8(self, "coladdr", "red value of color to add")
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yield UInt8(self, "coladdg", "green value of color to add")
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yield UInt8(self, "coladdb", "blue value of color to add")
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yield UInt8(self, "colnull", "keep this 0 (when accessing colors by dword)")
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yield UInt8(self, "scaddset", "screen/fixed color addition settings")
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yield UInt8(self, "scaddtype", "which screen to add/sub")
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yield UInt8(self, "Voice0Disabl2", "Disable Voice 0")
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yield UInt8(self, "Voice1Disabl2", "Disable Voice 1")
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yield UInt8(self, "Voice2Disabl2", "Disable Voice 2")
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yield UInt8(self, "Voice3Disabl2", "Disable Voice 3")
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yield UInt8(self, "Voice4Disabl2", "Disable Voice 4")
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yield UInt8(self, "Voice5Disabl2", "Disable Voice 5")
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yield UInt8(self, "Voice6Disabl2", "Disable Voice 6")
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yield UInt8(self, "Voice7Disabl2", "Disable Voice 7")
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yield RawBytes(self, "oamram", 1024, "OAMRAM (544 bytes)")
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yield RawBytes(self, "cgram", 512, "CGRAM")
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yield RawBytes(self, "pcgram", 512, "Previous CGRAM")
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yield UInt8(self, "vraminctype")
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yield UInt8(self, "vramincby8on", "if increment by 8 is on")
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yield UInt8(self, "vramincby8left", "how many left")
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yield UInt8(self, "vramincby8totl", "how many in total (32,64,128)")
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yield UInt8(self, "vramincby8rowl", "how many left in that row (start at 8)")
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yield UInt16(self, "vramincby8ptri", "increment by how many when rowl = 0")
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yield UInt8(self, "nexthprior")
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yield UInt8(self, "doirqnext")
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yield UInt16(self, "vramincby8var")
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yield UInt8(self, "screstype")
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yield UInt8(self, "extlatch")
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yield UInt8(self, "cfield")
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yield UInt8(self, "interlval")
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yield UInt16(self, "HIRQLoc HIRQ X")
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# NEWer ZST format
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yield UInt8(self, "KeyOnStA")
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yield UInt8(self, "KeyOnStB")
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yield UInt8(self, "SDD1BankA")
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yield UInt8(self, "SDD1BankB")
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yield UInt8(self, "SDD1BankC")
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yield UInt8(self, "SDD1BankD")
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yield UInt8(self, "vramread2")
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yield UInt8(self, "nosprincr")
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yield UInt16(self, "poamaddrs")
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yield UInt8(self, "ioportval")
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yield UInt8(self, "iohvlatch")
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yield UInt8(self, "ppustatus")
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yield PaddingBytes(self, "tempdat", 477, "Reserved/Unused")
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class ZSNESFile(Parser):
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PARSER_TAGS = {
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"id": "zsnes",
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"category": "game",
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"description": "ZSNES Save State File (only version 143)",
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"min_size": 3091 * 8,
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"file_ext": ("zst", "zs1", "zs2", "zs3", "zs4", "zs5", "zs6",
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"zs7", "zs8", "zs9")
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}
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endian = LITTLE_ENDIAN
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def validate(self):
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temp = self.stream.readBytes(0, 28)
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if temp[0:26] != b"ZSNES Save State File V143":
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return "Wrong header"
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if ord(temp[27:28]) != 143: # extra...
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return "Wrong save version %d <> 143" % temp[27:1]
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return True
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def seek(self, offset):
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padding = self.seekByte(offset, relative=False)
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if padding is not None:
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yield padding
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def createFields(self):
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yield ZSTHeader(self, "header", "ZST header") # Offset: 0
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yield ZSTcpu(self, "cpu", "ZST cpu registers") # 41
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yield ZSTppu(self, "ppu", "ZST CPU registers") # 72
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yield RawBytes(self, "wram7E", 65536) # 3091
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yield RawBytes(self, "wram7F", 65536) # 68627
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yield RawBytes(self, "vram", 65536) # 134163
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# TODO: Interpret extra on-cart chip data found at/beyond... 199699
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# TODO: Interpret Thumbnail/Screenshot data found at 275291
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# 64*56*2(16bit colors) = 7168
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padding = self.seekByte(275291, relative=False)
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if padding is not None:
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yield padding
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yield Bytes(self, "thumbnail", 7168, "Thumbnail of playing game in some sort of raw 64x56x16-bit RGB mode?")
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