mirror of
https://github.com/libretro/snes9x.git
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355 lines
8.3 KiB
C++
355 lines
8.3 KiB
C++
/***********************************************************************************
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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),
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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 funkyass (funkyass@spam.shaw.ca),
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Kris Bleakley (codeviolation@hotmail.com)
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(c) Copyright 2002 - 2010 Brad Jorsch (anomie@users.sourceforge.net),
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Nach (n-a-c-h@users.sourceforge.net),
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(c) Copyright 2002 - 2011 zones (kasumitokoduck@yahoo.com)
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(c) Copyright 2006 - 2007 nitsuja
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(c) Copyright 2009 - 2011 BearOso,
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OV2
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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 used in 1.39-1.51
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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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SPC7110 and RTC C++ emulator code used in 1.52+
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(c) Copyright 2009 byuu,
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neviksti
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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 emulator code used in 1.5-1.51
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(c) Copyright 1998 - 2003 Brad Martin
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(c) Copyright 1998 - 2006 Charles Bilyue'
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Sound emulator code used in 1.52+
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(c) Copyright 2004 - 2007 Shay Green (gblargg@gmail.com)
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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, HQ3x, HQ4x filters
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(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
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NTSC filter
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(c) Copyright 2006 - 2007 Shay Green
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GTK+ GUI code
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(c) Copyright 2004 - 2011 BearOso
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Win32 GUI code
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(c) Copyright 2003 - 2006 blip,
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funkyass,
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Matthew Kendora,
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Nach,
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nitsuja
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(c) Copyright 2009 - 2011 OV2
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Mac OS GUI code
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(c) Copyright 1998 - 2001 John Stiles
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(c) Copyright 2001 - 2011 zones
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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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// Abstract the details of reading from zip files versus FILE *'s.
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#include <string>
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#ifdef UNZIP_SUPPORT
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#include "unzip.h"
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#endif
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#include "snes9x.h"
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#include "reader.h"
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// Generic constructor/destructor
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Reader::Reader (void)
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{
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return;
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}
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Reader::~Reader (void)
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{
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return;
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}
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// Generic getline function, based on gets. Reimlpement if you can do better.
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char * Reader::getline (void)
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{
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bool eof;
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std::string ret;
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ret = getline(eof);
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if (ret.size() == 0 && eof)
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return (NULL);
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return (strdup(ret.c_str()));
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}
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std::string Reader::getline (bool &eof)
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{
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char buf[1024];
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std::string ret;
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eof = false;
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ret.clear();
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do
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{
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if (gets(buf, sizeof(buf)) == NULL)
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{
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eof = true;
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break;
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}
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ret.append(buf);
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}
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while (*ret.rbegin() != '\n');
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return (ret);
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}
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// snes9x.h STREAM reader
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fReader::fReader (STREAM f)
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{
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fp = f;
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}
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fReader::~fReader (void)
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{
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return;
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}
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int fReader::get_char (void)
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{
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return (GETC_STREAM(fp));
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}
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char * fReader::gets (char *buf, size_t len)
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{
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return (GETS_STREAM(buf, len, fp));
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}
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size_t fReader::read (char *buf, size_t len)
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{
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return (READ_STREAM(buf, len, fp));
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}
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// unzip reader
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#ifdef UNZIP_SUPPORT
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unzReader::unzReader (unzFile &v)
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{
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file = v;
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head = NULL;
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numbytes = 0;
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}
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unzReader::~unzReader (void)
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{
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return;
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}
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int unzReader::get_char (void)
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{
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unsigned char c;
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if (numbytes <= 0)
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{
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numbytes = unzReadCurrentFile(file, buffer, unz_BUFFSIZ);
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if (numbytes <= 0)
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return (EOF);
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head = buffer;
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}
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c = *head;
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head++;
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numbytes--;
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return ((int) c);
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}
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char * unzReader::gets (char *buf, size_t len)
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{
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size_t i;
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int c;
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for (i = 0; i < len - 1; i++)
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{
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c = get_char();
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if (c == EOF)
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{
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if (i == 0)
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return (NULL);
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break;
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}
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buf[i] = (char) c;
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if (buf[i] == '\n')
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break;
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}
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buf[i] = '\0';
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return (buf);
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}
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size_t unzReader::read (char *buf, size_t len)
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{
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if (len == 0)
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return (len);
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if (len <= numbytes)
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{
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memcpy(buf, head, len);
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numbytes -= len;
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head += len;
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return (len);
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}
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size_t numread = 0;
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if (numbytes > 0)
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{
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memcpy(buf, head, numbytes);
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numread += numbytes;
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head = NULL;
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numbytes = 0;
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}
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int l = unzReadCurrentFile(file, buf + numread, len - numread);
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if (l > 0)
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numread += l;
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return (numread);
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}
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#endif
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