mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-01 16:35:16 +01:00
520 lines
11 KiB
C++
520 lines
11 KiB
C++
/****************************************************************************
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* Snes9x 1.51 Nintendo Wii/Gamecube Port
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*
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* softdev July 2006
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* crunchy2 May 2007-July 2007
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* Michniewski 2008
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* Tantric 2008-2009
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*
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* snes9xGX.cpp
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*
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* This file controls overall program flow. Most things start and end here!
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***************************************************************************/
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#include <gccore.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ogcsys.h>
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#include <unistd.h>
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#include <wiiuse/wpad.h>
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#include <fat.h>
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#include <debug.h>
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#ifdef HW_RVL
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#include <di/di.h>
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#endif
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#include "FreeTypeGX.h"
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#include "snes9x.h"
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#include "memmap.h"
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#include "s9xdebug.h"
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#include "cpuexec.h"
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#include "ppu.h"
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#include "apu.h"
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#include "display.h"
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#include "gfx.h"
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#include "soundux.h"
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#include "spc700.h"
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#include "spc7110.h"
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#include "controls.h"
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#include "snes9xGX.h"
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#include "aram.h"
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#include "dvd.h"
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#include "networkop.h"
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#include "video.h"
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#include "s9xconfig.h"
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#include "audio.h"
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#include "menu.h"
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#include "sram.h"
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#include "freeze.h"
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#include "preferences.h"
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#include "button_mapping.h"
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#include "fileop.h"
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#include "filebrowser.h"
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#include "input.h"
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int ScreenshotRequested = 0;
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int ConfigRequested = 0;
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int ShutdownRequested = 0;
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int ResetRequested = 0;
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int ExitRequested = 0;
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char appPath[1024];
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int appLoadMethod = METHOD_AUTO;
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extern "C" {
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extern void __exception_setreload(int t);
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}
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/****************************************************************************
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* Shutdown / Reboot / Exit
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***************************************************************************/
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void ExitCleanup()
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{
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#ifdef HW_RVL
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ShutoffRumble();
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#endif
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ShutdownAudio();
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StopGX();
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HaltDeviceThread();
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UnmountAllFAT();
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#ifdef HW_RVL
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DI_Close();
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#endif
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}
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#ifdef HW_DOL
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#define PSOSDLOADID 0x7c6000a6
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int *psoid = (int *) 0x80001800;
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void (*PSOReload) () = (void (*)()) 0x80001800;
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#endif
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void ExitApp()
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{
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SavePrefs(SILENT);
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if (SNESROMSize > 0 && !ConfigRequested && GCSettings.AutoSave == 1)
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SaveSRAMAuto(GCSettings.SaveMethod, SILENT);
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ExitCleanup();
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if(ShutdownRequested)
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SYS_ResetSystem(SYS_POWEROFF, 0, 0);
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#ifdef HW_RVL
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if(GCSettings.ExitAction == 0) // Auto
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{
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char * sig = (char *)0x80001804;
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if(
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sig[0] == 'S' &&
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sig[1] == 'T' &&
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sig[2] == 'U' &&
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sig[3] == 'B' &&
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sig[4] == 'H' &&
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sig[5] == 'A' &&
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sig[6] == 'X' &&
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sig[7] == 'X')
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GCSettings.ExitAction = 3; // Exit to HBC
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else
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GCSettings.ExitAction = 1; // HBC not found
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}
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#endif
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if(GCSettings.ExitAction == 1) // Exit to Menu
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{
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#ifdef HW_RVL
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SYS_ResetSystem(SYS_RETURNTOMENU, 0, 0);
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#else
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#define SOFTRESET_ADR ((volatile u32*)0xCC003024)
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*SOFTRESET_ADR = 0x00000000;
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#endif
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}
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else if(GCSettings.ExitAction == 2) // Shutdown Wii
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{
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SYS_ResetSystem(SYS_POWEROFF, 0, 0);
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}
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else // Exit to Loader
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{
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#ifdef HW_RVL
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exit(0);
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#else
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if (psoid[0] == PSOSDLOADID)
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PSOReload();
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#endif
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}
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}
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#ifdef HW_RVL
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void ShutdownCB()
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{
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ShutdownRequested = 1;
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}
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void ResetCB()
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{
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ResetRequested = 1;
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}
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#endif
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#ifdef HW_DOL
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/****************************************************************************
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* ipl_set_config
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* lowlevel Qoob Modchip disable
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***************************************************************************/
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void ipl_set_config(unsigned char c)
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{
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volatile unsigned long* exi = (volatile unsigned long*)0xCC006800;
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unsigned long val,addr;
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addr=0xc0000000;
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val = c << 24;
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exi[0] = ((((exi[0]) & 0x405) | 256) | 48); //select IPL
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//write addr of IPL
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exi[0 * 5 + 4] = addr;
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exi[0 * 5 + 3] = ((4 - 1) << 4) | (1 << 2) | 1;
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while (exi[0 * 5 + 3] & 1);
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//write the ipl we want to send
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exi[0 * 5 + 4] = val;
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exi[0 * 5 + 3] = ((4 - 1) << 4) | (1 << 2) | 1;
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while (exi[0 * 5 + 3] & 1);
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exi[0] &= 0x405; //deselect IPL
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}
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#endif
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/****************************************************************************
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* setFrameTimerMethod()
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* change frametimer method depending on whether ROM is NTSC or PAL
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***************************************************************************/
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void setFrameTimerMethod()
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{
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/*
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Set frametimer method
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(timerstyle: 0=NTSC vblank, 1=PAL int timer)
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*/
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if ( Settings.PAL ) {
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if(vmode_60hz == 1)
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timerstyle = 1;
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else
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timerstyle = 0;
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} else {
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if(vmode_60hz == 1)
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timerstyle = 0;
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else
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timerstyle = 1;
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}
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return;
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}
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/****************************************************************************
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* Emulation loop
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***************************************************************************/
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extern void S9xInitSync();
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extern uint32 prevRenderedFrameCount;
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static int videoReset;
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static int currentMode;
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void
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emulate ()
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{
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while (1) // main loop
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{
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// go back to checking if devices were inserted/removed
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// since we're entering the menu
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ResumeDeviceThread();
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SwitchAudioMode(1);
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if(SNESROMSize == 0)
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MainMenu(MENU_GAMESELECTION);
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else
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MainMenu(MENU_GAME);
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AllocGfxMem();
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SelectFilterMethod();
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ConfigRequested = 0;
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ScreenshotRequested = 0;
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SwitchAudioMode(0);
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Settings.MultiPlayer5Master = (GCSettings.Controller == CTRL_PAD4 ? true : false);
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Settings.SuperScopeMaster = (GCSettings.Controller == CTRL_SCOPE ? true : false);
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Settings.MouseMaster = (GCSettings.Controller == CTRL_MOUSE ? true : false);
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Settings.JustifierMaster = (GCSettings.Controller == CTRL_JUST ? true : false);
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SetControllers ();
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// stop checking if devices were removed/inserted
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// since we're starting emulation again
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HaltDeviceThread();
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AudioStart ();
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FrameTimer = 0;
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setFrameTimerMethod (); // set frametimer method every time a ROM is loaded
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CheckVideo = 1; // force video update
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prevRenderedFrameCount = IPPU.RenderedFramesCount;
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videoReset = -1;
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currentMode = GCSettings.render;
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while(1) // emulation loop
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{
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S9xMainLoop ();
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NGCReportButtons ();
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if(ResetRequested)
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{
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S9xSoftReset (); // reset game
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ResetRequested = 0;
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}
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if (ConfigRequested)
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{
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ConfigRequested = 0;
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FreeGfxMem();
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ResetVideo_Menu();
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break;
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}
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#ifdef HW_RVL
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if(ShutdownRequested)
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ExitApp();
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#endif
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} // emulation loop
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} // main loop
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}
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static void CreateAppPath(char origpath[])
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{
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#ifdef HW_DOL
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sprintf(appPath, GCSettings.SaveFolder);
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#else
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char path[1024];
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strncpy(path, origpath, 1024); // make a copy so we don't mess up original
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char * loc;
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int pos = -1;
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if(strncmp(path, "sd:/", 5) == 0 || strncmp(path, "fat:/", 5) == 0)
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appLoadMethod = METHOD_SD;
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else if(strncmp(path, "usb:/", 5) == 0)
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appLoadMethod = METHOD_USB;
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loc = strrchr(path,'/');
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if (loc != NULL)
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*loc = 0; // strip file name
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loc = strchr(path,'/'); // looking for first / (after sd: or usb:)
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if (loc != NULL)
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pos = loc - path + 1;
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if(pos >= 0 && pos < 1024)
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sprintf(appPath, &(path[pos]));
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#endif
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}
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/****************************************************************************
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* USB Gecko Debugging
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***************************************************************************/
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static bool gecko = false;
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static mutex_t gecko_mutex = 0;
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static ssize_t __out_write(struct _reent *r, int fd, const char *ptr, size_t len)
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{
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u32 level;
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if (!ptr || len <= 0 || !gecko)
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return -1;
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LWP_MutexLock(gecko_mutex);
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level = IRQ_Disable();
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usb_sendbuffer(1, ptr, len);
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IRQ_Restore(level);
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LWP_MutexUnlock(gecko_mutex);
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return len;
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}
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const devoptab_t gecko_out = {
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"stdout", // device name
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0, // size of file structure
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NULL, // device open
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NULL, // device close
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__out_write,// device write
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NULL, // device read
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NULL, // device seek
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NULL, // device fstat
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NULL, // device stat
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NULL, // device link
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NULL, // device unlink
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NULL, // device chdir
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NULL, // device rename
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NULL, // device mkdir
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0, // dirStateSize
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NULL, // device diropen_r
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NULL, // device dirreset_r
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NULL, // device dirnext_r
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NULL, // device dirclose_r
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NULL // device statvfs_r
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};
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void USBGeckoOutput()
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{
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LWP_MutexInit(&gecko_mutex, false);
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gecko = usb_isgeckoalive(1);
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devoptab_list[STD_OUT] = &gecko_out;
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devoptab_list[STD_ERR] = &gecko_out;
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}
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/****************************************************************************
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* MAIN
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*
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* Steps to Snes9x Emulation :
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* 1. Initialise GC Video
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* 2. Initialise libfreetype (Nice to read something)
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* 3. Set S9xSettings to standard defaults (s9xconfig.h)
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* 4. Allocate Snes9x Memory
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* 5. Allocate APU Memory
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* 6. Set Pixel format to RGB565 for GL Rendering
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* 7. Initialise Snes9x/GC Sound System
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* 8. Initialise Snes9x Graphics subsystem
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* 9. Let's Party!
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***************************************************************************/
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int
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main(int argc, char *argv[])
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{
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//USBGeckoOutput(); // uncomment to enable USB gecko output
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__exception_setreload(8);
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#ifdef HW_DOL
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ipl_set_config(6); // disable Qoob modchip
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#endif
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#ifdef HW_RVL
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DI_Close(); // fixes some black screen issues
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DI_Init(); // first
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#endif
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#ifdef DEBUG_WII
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//DEBUG_Init(GDBSTUB_DEVICE_USB, 1); // init debugging
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//_break();
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#endif
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InitDeviceThread();
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VIDEO_Init();
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PAD_Init ();
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#ifdef HW_RVL
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WPAD_Init();
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#endif
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InitGCVideo(); // Initialise video
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ResetVideo_Menu (); // change to menu video mode
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#ifdef HW_RVL
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// read wiimote accelerometer and IR data
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WPAD_SetDataFormat(WPAD_CHAN_ALL,WPAD_FMT_BTNS_ACC_IR);
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WPAD_SetVRes(WPAD_CHAN_ALL, screenwidth, screenheight);
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// Wii Power/Reset buttons
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WPAD_SetPowerButtonCallback((WPADShutdownCallback)ShutdownCB);
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SYS_SetPowerCallback(ShutdownCB);
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SYS_SetResetCallback(ResetCB);
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#endif
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// GameCube only - Injected ROM
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// Before going any further, let's copy any injected ROM image
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// We'll put it in ARAM for safe storage
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#ifdef HW_DOL
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AR_Init (NULL, 0);
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int *romptr = (int *) 0x81000000; // location of injected rom
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if (memcmp ((char *) romptr, "SNESROM0", 8) == 0)
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{
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SNESROMSize = romptr[2];
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if(SNESROMSize > (1024*128) && SNESROMSize < (1024*1024*8))
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{
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romptr = (int *) 0x81000020;
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ARAMPut ((char *) romptr, (char *) AR_SNESROM, SNESROMSize);
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}
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else // not a valid ROM size
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{
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SNESROMSize = 0;
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}
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}
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#endif
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// Initialize DVD subsystem (GameCube only)
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#ifdef HW_DOL
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DVD_Init ();
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#endif
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// store path app was loaded from
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sprintf(appPath, "snes9x");
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if(argc > 0 && argv[0] != NULL)
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CreateAppPath(argv[0]);
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// Initialize libFAT for SD and USB
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MountAllFAT();
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// Set defaults
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DefaultSettings ();
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S9xUnmapAllControls ();
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SetDefaultButtonMap ();
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// Allocate SNES Memory
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if (!Memory.Init ())
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ExitApp();
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// Allocate APU
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if (!S9xInitAPU ())
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ExitApp();
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// Set Pixel Renderer to match 565
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S9xSetRenderPixelFormat (RGB565);
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// Initialise Snes Sound System
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S9xInitSound (5, TRUE, 1024);
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// Initialise Graphics
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setGFX ();
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if (!S9xGraphicsInit ())
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ExitApp();
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// Check if DVD drive belongs to a Wii
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SetDVDDriveType();
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S9xSetSoundMute (TRUE);
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S9xInitSync(); // initialize frame sync
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// Initialize font system
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InitFreeType((u8*)font_ttf, font_ttf_size);
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InitGUIThreads();
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// GameCube only - Injected ROM
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// Everything's been initialized, we can copy our ROM back
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// from ARAM into main memory
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#ifdef HW_DOL
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if(SNESROMSize > 0)
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{
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ARAMFetchSlow( (char *)Memory.ROM, (char *)AR_SNESROM, SNESROMSize);
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Memory.LoadROM ("BLANK.SMC");
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Memory.LoadSRAM ("BLANK");
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}
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#endif
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emulate(); // main loop
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}
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