mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-28 05:24:21 +01:00
6fb28b823a
- compiles with latest devkitppc (r15) - now uses libfat (can use front sd slot on wii) - updated menu items a bit - wiimote support - fixed: autoload sram/freeze - fixed: rom plays immediately after loading
435 lines
11 KiB
C++
435 lines
11 KiB
C++
/****************************************************************************
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* Snes9x 1.50
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*
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* Nintendo Gamecube Port
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* softdev July 2006
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* crunchy2 May 2007
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*
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* s9xsupport.cpp
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*
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* This file contains the supporting functions defined in porting.html, with
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* others taken from unix/x11.cpp and unix/unix.cpp
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****************************************************************************/
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/****************************************************************************
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and
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Jerremy Koot (jkoot@snes9x.com)
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(c) Copyright 2002 - 2004 Matthew Kendora
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(c) Copyright 2002 - 2005 Peter Bortas (peter@bortas.org)
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(c) Copyright 2004 - 2005 Joel Yliluoma (http://iki.fi/bisqwit/)
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(c) Copyright 2001 - 2006 John Weidman (jweidman@slip.net)
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(c) Copyright 2002 - 2006 Brad Jorsch (anomie@users.sourceforge.net),
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funkyass (funkyass@spam.shaw.ca),
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Kris Bleakley (codeviolation@hotmail.com),
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Nach (n-a-c-h@users.sourceforge.net), and
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zones (kasumitokoduck@yahoo.com)
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BS-X C emulator code
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(c) Copyright 2005 - 2006 Dreamer Nom,
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zones
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C4 x86 assembler and some C emulation code
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(c) Copyright 2000 - 2003 _Demo_ (_demo_@zsnes.com),
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Nach,
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zsKnight (zsknight@zsnes.com)
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C4 C++ code
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(c) Copyright 2003 - 2006 Brad Jorsch,
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Nach
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DSP-1 emulator code
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(c) Copyright 1998 - 2006 _Demo_,
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Andreas Naive (andreasnaive@gmail.com)
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Gary Henderson,
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Ivar (ivar@snes9x.com),
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John Weidman,
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Kris Bleakley,
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Matthew Kendora,
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Nach,
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neviksti (neviksti@hotmail.com)
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DSP-2 emulator code
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(c) Copyright 2003 John Weidman,
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Kris Bleakley,
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Lord Nightmare (lord_nightmare@users.sourceforge.net),
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Matthew Kendora,
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neviksti
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DSP-3 emulator code
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(c) Copyright 2003 - 2006 John Weidman,
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Kris Bleakley,
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Lancer,
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z80 gaiden
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DSP-4 emulator code
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(c) Copyright 2004 - 2006 Dreamer Nom,
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John Weidman,
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Kris Bleakley,
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Nach,
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z80 gaiden
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OBC1 emulator code
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(c) Copyright 2001 - 2004 zsKnight,
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pagefault (pagefault@zsnes.com),
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Kris Bleakley,
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Ported from x86 assembler to C by sanmaiwashi
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SPC7110 and RTC C++ emulator code
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(c) Copyright 2002 Matthew Kendora with research by
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zsKnight,
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John Weidman,
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Dark Force
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S-DD1 C emulator code
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(c) Copyright 2003 Brad Jorsch with research by
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Andreas Naive,
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John Weidman
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S-RTC C emulator code
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(c) Copyright 2001-2006 byuu,
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John Weidman
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ST010 C++ emulator code
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(c) Copyright 2003 Feather,
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John Weidman,
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Kris Bleakley,
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Matthew Kendora
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Super FX x86 assembler emulator code
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(c) Copyright 1998 - 2003 _Demo_,
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pagefault,
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zsKnight,
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Super FX C emulator code
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(c) Copyright 1997 - 1999 Ivar,
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Gary Henderson,
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John Weidman
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Sound DSP emulator code is derived from SNEeSe and OpenSPC:
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(c) Copyright 1998 - 2003 Brad Martin
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(c) Copyright 1998 - 2006 Charles Bilyue'
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SH assembler code partly based on x86 assembler code
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(c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
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2xSaI filter
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(c) Copyright 1999 - 2001 Derek Liauw Kie Fa
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HQ2x filter
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(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
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Specific ports contains the works of other authors. See headers in
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individual files.
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Snes9x homepage: http://www.snes9x.com
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Permission to use, copy, modify and/or distribute Snes9x in both binary
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and source form, for non-commercial purposes, is hereby granted without
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fee, providing that this license information and copyright notice appear
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with all copies and any derived work.
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This software is provided 'as-is', without any express or implied
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warranty. In no event shall the authors be held liable for any damages
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arising from the use of this software or it's derivatives.
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Snes9x is freeware for PERSONAL USE only. Commercial users should
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seek permission of the copyright holders first. Commercial use includes,
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but is not limited to, charging money for Snes9x or software derived from
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Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
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using Snes9x as a promotion for your commercial product.
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The copyright holders request that bug fixes and improvements to the code
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should be forwarded to them so everyone can benefit from the modifications
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in future versions.
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Super NES and Super Nintendo Entertainment System are trademarks of
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Nintendo Co., Limited and its subsidiary companies.
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*****************************************************************************/
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#include <gccore.h>
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#include <ogcsys.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 <unistd.h>
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#include "snes9x.h"
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#include "memmap.h"
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#include "debug.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 "gctime.h"
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#include "snes9xGx.h"
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#include "video.h"
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#include "audio.h"
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extern u32 FrameTimer;
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long long prev;
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long long now;
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/*** Miscellaneous Functions ***/
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void
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S9xMessage (int /*type */ , int /*number */ , const char *message)
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{
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#define MAX_MESSAGE_LEN (36 * 3)
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static char buffer[MAX_MESSAGE_LEN + 1];
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strncpy (buffer, message, MAX_MESSAGE_LEN);
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buffer[MAX_MESSAGE_LEN] = 0;
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S9xSetInfoString (buffer);
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}
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void
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S9xExit ()
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{
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/*** Nintendo Gamecube will NEVER get here ... unless
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something major went wrong !!
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In which case, I'll settle for a reboot first -;)
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***/
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}
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/*** File based functions ***/
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const char *
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S9xChooseFilename (bool8 read_only)
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{
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return NULL;
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}
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const char *
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S9xChooseMovieFilename (bool8 read_only)
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{
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return NULL;
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}
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const char *
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S9xGetDirectory (enum s9x_getdirtype dirtype)
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{
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return NULL;
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}
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const char *
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S9xGetFilename (const char *ex, enum s9x_getdirtype dirtype)
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{
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return NULL;
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}
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const char *
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S9xGetFilenameInc (const char *e, enum s9x_getdirtype dirtype)
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{
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return NULL;
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}
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/*** Memory based functions ***/
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void
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S9xAutoSaveSRAM ()
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{
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//Memory.SaveSRAM (S9xGetFilename (".srm", SRAM_DIR));
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}
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/*** Sound based functions ***/
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void
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S9xToggleSoundChannel (int c)
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{
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if (c == 8)
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so.sound_switch = 255;
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else
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so.sound_switch ^= 1 << c;
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S9xSetSoundControl (so.sound_switch);
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}
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/****************************************************************************
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* OpenSoundDevice
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*
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* Main initialisation for NGC sound system
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****************************************************************************/
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bool8
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S9xOpenSoundDevice (int mode, bool8 stereo, int buffer_size)
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{
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so.stereo = TRUE;
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so.playback_rate = 32000;
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so.sixteen_bit = TRUE;
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so.encoded = 0;
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so.buffer_size = 4096;
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so.sound_switch = 255;
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S9xSetPlaybackRate (so.playback_rate);
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InitGCAudio ();
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return TRUE;
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}
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/*** Deprecated function. NGC uses threaded sound ***/
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void
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S9xGenerateSound ()
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{
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}
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/* eke-eke */
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void S9xInitSync()
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{
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FrameTimer = 0;
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prev = gettime();
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}
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/*** Synchronisation ***/
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extern int timerstyle;
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void S9xSyncSpeed ()
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{
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uint32 skipFrms = Settings.SkipFrames;
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if ( Settings.TurboMode )
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skipFrms = Settings.TurboSkipFrames;
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if ( timerstyle == 0 ) /* use NGC vertical sync (VSYNC) with NTSC roms */
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{
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while (FrameTimer == 0)
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{
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usleep (50);
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}
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if (FrameTimer > skipFrms)
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FrameTimer = skipFrms;
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if ((FrameTimer > 1) && (IPPU.SkippedFrames < skipFrms))
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{
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IPPU.SkippedFrames++;
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IPPU.RenderThisFrame = FALSE;
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}
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else
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{
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IPPU.SkippedFrames = 0;
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IPPU.RenderThisFrame = TRUE;
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}
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}
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else /* use internal timer for PAL roms */
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{
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unsigned int timediffallowed = Settings.TurboMode ? 0 : Settings.FrameTime;
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now = gettime();
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if (diff_usec(prev, now) > timediffallowed)
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{
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/*while ( diff_usec((prev, now) < timediffallowed * 2) {
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now = gettime();
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}*/
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/* Timer has already expired */
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if (IPPU.SkippedFrames < skipFrms)
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{
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IPPU.SkippedFrames++;
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IPPU.RenderThisFrame = FALSE;
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}
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else
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{
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IPPU.SkippedFrames = 0;
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IPPU.RenderThisFrame = TRUE;
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}
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}
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else
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{
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/*** Ahead - so hold up ***/
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while (diff_usec(prev, now) < timediffallowed) now=gettime();
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IPPU.RenderThisFrame = TRUE;
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IPPU.SkippedFrames = 0;
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}
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prev = now;
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}
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if ( !Settings.TurboMode )
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FrameTimer--;
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return;
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}
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/*** Video / Display related functions ***/
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bool8
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S9xInitUpdate ()
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{
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/***
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* Is this necessary in 1.50 ?
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* memset (GFX.Screen, 0, IMAGE_WIDTH * IMAGE_HEIGHT * 2);
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*/
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return (TRUE);
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}
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bool8
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S9xDeinitUpdate (int Width, int Height)
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{
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update_video (Width, Height);
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return (TRUE);
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}
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bool8
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S9xContinueUpdate (int Width, int Height)
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{
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return (TRUE);
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}
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void
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S9xSetPalette ()
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{
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return;
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}
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/*** Input functions ***/
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void
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S9xHandlePortCommand (s9xcommand_t cmd, int16 data1, int16 data2)
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{
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return;
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}
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bool
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S9xPollButton (uint32 id, bool * pressed)
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{
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return 0;
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}
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bool
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S9xPollAxis (uint32 id, int16 * value)
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{
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return 0;
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}
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bool
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S9xPollPointer (uint32 id, int16 * x, int16 * y)
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{
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return 0;
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}
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void
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S9xLoadSDD1Data ()
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{
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Memory.FreeSDD1Data ();
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Settings.SDD1Pack = FALSE;
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if (strncmp (Memory.ROMName, "Star Ocean", 10) == 0)
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Settings.SDD1Pack = TRUE;
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if (strncmp (Memory.ROMName, "STREET FIGHTER ALPHA2", 21) == 0)
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Settings.SDD1Pack = TRUE;
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return;
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}
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