1# Copyright (c) 2013-2016 Jeffrey Pfau
  2#
  3# This Source Code Form is subject to the terms of the Mozilla Public
  4# License, v. 2.0. If a copy of the MPL was not distributed with this
  5# file, You can obtain one at http://mozilla.org/MPL/2.0/.
  6from ._pylib import ffi, lib
  7from .arm import ARMCore
  8from .core import Core, needsReset
  9from .tile import Sprite
 10from .memory import Memory
 11from . import createCallback
 12
 13class GBA(Core):
 14    KEY_A = lib.GBA_KEY_A
 15    KEY_B = lib.GBA_KEY_B
 16    KEY_SELECT = lib.GBA_KEY_SELECT
 17    KEY_START = lib.GBA_KEY_START
 18    KEY_DOWN = lib.GBA_KEY_DOWN
 19    KEY_UP = lib.GBA_KEY_UP
 20    KEY_LEFT = lib.GBA_KEY_LEFT
 21    KEY_RIGHT = lib.GBA_KEY_RIGHT
 22    KEY_L = lib.GBA_KEY_L
 23    KEY_R = lib.GBA_KEY_R
 24
 25    SIO_NORMAL_8 = lib.SIO_NORMAL_8
 26    SIO_NORMAL_32 = lib.SIO_NORMAL_32
 27    SIO_MULTI = lib.SIO_MULTI
 28    SIO_UART = lib.SIO_UART
 29    SIO_JOYBUS = lib.SIO_JOYBUS
 30    SIO_GPIO = lib.SIO_GPIO
 31
 32    def __init__(self, native):
 33        super(GBA, self).__init__(native)
 34        self._native = ffi.cast("struct GBA*", native.board)
 35        self.sprites = GBAObjs(self)
 36        self.cpu = ARMCore(self._core.cpu)
 37        self._sio = set()
 38
 39    @needsReset
 40    def _initCache(self, cache):
 41        lib.GBAVideoCacheInit(cache)
 42        lib.GBAVideoCacheAssociate(cache, ffi.addressof(self._native.video))
 43
 44    def _deinitCache(self, cache):
 45        lib.mCacheSetDeinit(cache)
 46        if self._wasReset:
 47            self._native.video.renderer.cache = ffi.NULL
 48
 49    def _load(self):
 50        super(GBA, self)._load()
 51        self.memory = GBAMemory(self._core, self._native.memory.romSize)
 52
 53    def attachSIO(self, link, mode=lib.SIO_MULTI):
 54        self._sio.add(mode)
 55        lib.GBASIOSetDriver(ffi.addressof(self._native.sio), link._native, mode)
 56
 57    def __del__(self):
 58        for mode in self._sio:
 59            lib.GBASIOSetDriver(ffi.addressof(self._native.sio), ffi.NULL, mode)
 60
 61createCallback("GBASIOPythonDriver", "init")
 62createCallback("GBASIOPythonDriver", "deinit")
 63createCallback("GBASIOPythonDriver", "load")
 64createCallback("GBASIOPythonDriver", "unload")
 65createCallback("GBASIOPythonDriver", "writeRegister")
 66
 67class GBASIODriver(object):
 68    def __init__(self):
 69        self._handle = ffi.new_handle(self)
 70        self._native = ffi.gc(lib.GBASIOPythonDriverCreate(self._handle), lib.free)
 71
 72    def init(self):
 73        return True
 74
 75    def deinit(self):
 76        pass
 77
 78    def load(self):
 79        return True
 80
 81    def unload(self):
 82        return True
 83
 84    def writeRegister(self, address, value):
 85        return value
 86
 87class GBASIOJOYDriver(GBASIODriver):
 88    RESET = lib.JOY_RESET
 89    POLL = lib.JOY_POLL
 90    TRANS = lib.JOY_TRANS
 91    RECV = lib.JOY_RECV
 92
 93    def __init__(self):
 94        self._handle = ffi.new_handle(self)
 95        self._native = ffi.gc(lib.GBASIOJOYPythonDriverCreate(self._handle), lib.free)
 96
 97    def sendCommand(self, cmd, data):
 98        buffer = ffi.new('uint8_t[5]')
 99        try:
100            buffer[0] = data[0]
101            buffer[1] = data[1]
102            buffer[2] = data[2]
103            buffer[3] = data[3]
104            buffer[4] = data[4]
105        except IndexError:
106            pass
107
108        outlen = lib.GBASIOJOYSendCommand(self._native, cmd, buffer)
109        if outlen > 0 and outlen <= 5:
110            return bytes(buffer[0:outlen])
111        return None
112
113class GBAMemory(Memory):
114    def __init__(self, core, romSize=lib.SIZE_CART0):
115        super(GBAMemory, self).__init__(core, 0x100000000)
116
117        self.bios = Memory(core, lib.SIZE_BIOS, lib.BASE_BIOS)
118        self.wram = Memory(core, lib.SIZE_WORKING_RAM, lib.BASE_WORKING_RAM)
119        self.iwram = Memory(core, lib.SIZE_WORKING_IRAM, lib.BASE_WORKING_IRAM)
120        self.io = Memory(core, lib.SIZE_IO, lib.BASE_IO)
121        self.palette = Memory(core, lib.SIZE_PALETTE_RAM, lib.BASE_PALETTE_RAM)
122        self.vram = Memory(core, lib.SIZE_VRAM, lib.BASE_VRAM)
123        self.oam = Memory(core, lib.SIZE_OAM, lib.BASE_OAM)
124        self.cart0 = Memory(core, romSize, lib.BASE_CART0)
125        self.cart1 = Memory(core, romSize, lib.BASE_CART1)
126        self.cart2 = Memory(core, romSize, lib.BASE_CART2)
127        self.cart = self.cart0
128        self.rom = self.cart0
129        self.sram = Memory(core, lib.SIZE_CART_SRAM, lib.BASE_CART_SRAM)
130
131class GBASprite(Sprite):
132    TILE_BASE = 0x800, 0x400
133    PALETTE_BASE = 0x10, 1
134
135    def __init__(self, obj):
136        self._a = obj.a
137        self._b = obj.b
138        self._c = obj.c
139        self.x = self._b & 0x1FF
140        self.y = self._a & 0xFF
141        self._shape = self._a >> 14
142        self._size = self._b >> 14
143        self._256Color = bool(self._a & 0x2000)
144        self.width, self.height = lib.GBAVideoObjSizes[self._shape * 4 + self._size]
145        self.tile = self._c & 0x3FF
146        if self._256Color:
147            self.paletteId = 0
148            self.tile >>= 1
149        else:
150            self.paletteId = self._c >> 12
151
152class GBAObjs:
153    def __init__(self, core):
154        self._core = core
155        self._obj = core._native.video.oam.obj
156
157    def __len__(self):
158        return 128
159
160    def __getitem__(self, index):
161        if index >= len(self):
162            raise IndexError()
163        sprite = GBASprite(self._obj[index])
164        tiles = self._core.tiles[3 if sprite._256Color else 2]
165        map1D = bool(self._core._native.memory.io[0] & 0x40)
166        sprite.constitute(tiles, 0 if map1D else 0x20)
167        return sprite