mirror of
https://github.com/libretro/snes9x.git
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639 lines
19 KiB
C++
639 lines
19 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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zones (kasumitokoduck@yahoo.com)
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(c) Copyright 2006 - 2007 nitsuja
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(c) Copyright 2009 - 2010 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 - 2010 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 - 2010 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 - 2010 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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#include "snes9x.h"
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#include "blit.h"
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#define ALL_COLOR_MASK (FIRST_COLOR_MASK | SECOND_COLOR_MASK | THIRD_COLOR_MASK)
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#ifdef GFX_MULTI_FORMAT
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static uint16 lowPixelMask = 0, qlowPixelMask = 0;
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static uint32 colorMask = 0;
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#else
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#define lowPixelMask (RGB_LOW_BITS_MASK)
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#define qlowPixelMask ((RGB_HI_BITS_MASK >> 3) | TWO_LOW_BITS_MASK)
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#define colorMask (((~RGB_HI_BITS_MASK & ALL_COLOR_MASK) << 16) | (~RGB_HI_BITS_MASK & ALL_COLOR_MASK))
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#endif
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static snes_ntsc_t *ntsc = NULL;
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static uint8 *XDelta = NULL;
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bool8 S9xBlitFilterInit (void)
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{
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XDelta = new uint8[SNES_WIDTH * SNES_HEIGHT_EXTENDED * 4];
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if (!XDelta)
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return (FALSE);
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S9xBlitClearDelta();
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#ifdef GFX_MULTI_FORMAT
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lowPixelMask = RGB_LOW_BITS_MASK;
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qlowPixelMask = (RGB_HI_BITS_MASK >> 3) | TWO_LOW_BITS_MASK;
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colorMask = ((~RGB_HI_BITS_MASK & ALL_COLOR_MASK) << 16) | (~RGB_HI_BITS_MASK & ALL_COLOR_MASK);
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#endif
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return (TRUE);
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}
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void S9xBlitFilterDeinit (void)
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{
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if (XDelta)
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{
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delete[] XDelta;
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XDelta = NULL;
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}
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}
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void S9xBlitClearDelta (void)
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{
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uint32 *d = (uint32 *) XDelta;
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for (int y = 0; y < SNES_HEIGHT_EXTENDED; y++)
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for (int x = 0; x < SNES_WIDTH; x++)
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*d++ = 0x80008000;
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}
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bool8 S9xBlitNTSCFilterInit (void)
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{
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ntsc = (snes_ntsc_t *) malloc(sizeof(snes_ntsc_t));
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if (!ntsc)
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return (FALSE);
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snes_ntsc_init(ntsc, &snes_ntsc_composite);
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return (TRUE);
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}
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void S9xBlitNTSCFilterDeinit (void)
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{
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if (ntsc)
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{
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free(ntsc);
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ntsc = NULL;
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}
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}
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void S9xBlitNTSCFilterSet (const snes_ntsc_setup_t *setup)
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{
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snes_ntsc_init(ntsc, setup);
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}
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void S9xBlitPixSmall16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
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{
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width <<= 1;
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for (; height; height--)
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{
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memcpy(dstPtr, srcPtr, width);
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srcPtr += srcRowBytes;
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dstPtr += dstRowBytes;
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}
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}
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void S9xBlitPixScaled16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
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{
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uint8 *dstPtr2 = dstPtr + dstRowBytes, *deltaPtr = XDelta;
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dstRowBytes <<= 1;
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for (; height; height--)
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{
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uint32 *dP1 = (uint32 *) dstPtr, *dP2 = (uint32 *) dstPtr2, *bP = (uint32 *) srcPtr, *xP = (uint32 *) deltaPtr;
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uint32 currentPixel, lastPixel, currentPixA, currentPixB, colorA, colorB;
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for (int i = 0; i < (width >> 1); i++)
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{
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currentPixel = *bP;
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lastPixel = *xP;
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if (currentPixel != lastPixel)
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{
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#ifdef MSB_FIRST
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colorA = (currentPixel >> 16) & 0xFFFF;
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colorB = (currentPixel ) & 0xFFFF;
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#else
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colorA = (currentPixel ) & 0xFFFF;
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colorB = (currentPixel >> 16) & 0xFFFF;
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#endif
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currentPixA = (colorA << 16) | colorA;
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currentPixB = (colorB << 16) | colorB;
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dP1[0] = currentPixA;
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dP1[1] = currentPixB;
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dP2[0] = currentPixA;
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dP2[1] = currentPixB;
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*xP = *bP;
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}
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bP++;
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xP++;
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dP1 += 2;
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dP2 += 2;
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}
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srcPtr += srcRowBytes;
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deltaPtr += srcRowBytes;
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dstPtr += dstRowBytes;
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dstPtr2 += dstRowBytes;
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}
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}
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void S9xBlitPixHiRes16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
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{
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width <<= 1;
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for (; height; height--)
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{
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memcpy(dstPtr, srcPtr, width);
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dstPtr += dstRowBytes;
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memcpy(dstPtr, srcPtr, width);
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srcPtr += srcRowBytes;
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dstPtr += dstRowBytes;
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}
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}
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void S9xBlitPixScaledTV16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
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{
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uint8 *dstPtr2 = dstPtr + dstRowBytes, *deltaPtr = XDelta;
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dstRowBytes <<= 1;
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for (; height; height--)
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{
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uint32 *dP1 = (uint32 *) dstPtr, *dP2 = (uint32 *) dstPtr2, *bP = (uint32 *) srcPtr, *xP = (uint32 *) deltaPtr;
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uint32 currentPixel, nextPixel, currentDelta, nextDelta, colorA, colorB, product, darkened;
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for (int i = 0; i < (width >> 1) - 1; i++)
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{
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currentPixel = *bP;
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currentDelta = *xP;
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nextPixel = *(bP + 1);
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nextDelta = *(xP + 1);
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if ((currentPixel != currentDelta) || (nextPixel != nextDelta))
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{
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*xP = *bP;
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#ifdef MSB_FIRST
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colorA = (currentPixel >> 16) & 0xFFFF;
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colorB = (currentPixel ) & 0xFFFF;
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#else
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colorA = (currentPixel ) & 0xFFFF;
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colorB = (currentPixel >> 16) & 0xFFFF;
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#endif
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#ifdef MSB_FIRST
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*dP1 = product = (colorA << 16) | ((((colorA >> 1) & colorMask) + ((colorB >> 1) & colorMask) + (colorA & colorB & lowPixelMask)) );
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#else
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*dP1 = product = (colorA ) | ((((colorA >> 1) & colorMask) + ((colorB >> 1) & colorMask) + (colorA & colorB & lowPixelMask)) << 16);
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#endif
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darkened = (product = ((product >> 1) & colorMask));
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darkened += (product = ((product >> 1) & colorMask));
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darkened += (product >> 1) & colorMask;
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*dP2 = darkened;
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#ifdef MSB_FIRST
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colorA = (nextPixel >> 16) & 0xFFFF;
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#else
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colorA = (nextPixel ) & 0xFFFF;
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#endif
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#ifdef MSB_FIRST
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*(dP1 + 1) = product = (colorB << 16) | ((((colorA >> 1) & colorMask) + ((colorB >> 1) & colorMask) + (colorA & colorB & lowPixelMask)) );
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#else
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*(dP1 + 1) = product = (colorB ) | ((((colorA >> 1) & colorMask) + ((colorB >> 1) & colorMask) + (colorA & colorB & lowPixelMask)) << 16);
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#endif
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darkened = (product = ((product >> 1) & colorMask));
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darkened += (product = ((product >> 1) & colorMask));
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darkened += (product >> 1) & colorMask;
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*(dP2 + 1) = darkened;
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}
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bP++;
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xP++;
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dP1 += 2;
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dP2 += 2;
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}
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// Last 2 Pixels
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currentPixel = *bP;
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currentDelta = *xP;
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if (currentPixel != currentDelta)
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{
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*xP = *bP;
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#ifdef MSB_FIRST
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colorA = (currentPixel >> 16) & 0xFFFF;
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colorB = (currentPixel ) & 0xFFFF;
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#else
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colorA = (currentPixel ) & 0xFFFF;
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colorB = (currentPixel >> 16) & 0xFFFF;
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#endif
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#ifdef MSB_FIRST
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*dP1 = product = (colorA << 16) | ((((colorA >> 1) & colorMask) + ((colorB >> 1) & colorMask) + (colorA & colorB & lowPixelMask)) );
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#else
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*dP1 = product = (colorA ) | ((((colorA >> 1) & colorMask) + ((colorB >> 1) & colorMask) + (colorA & colorB & lowPixelMask)) << 16);
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#endif
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darkened = (product = ((product >> 1) & colorMask));
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darkened += (product = ((product >> 1) & colorMask));
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darkened += (product >> 1) & colorMask;
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*dP2 = darkened;
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*(dP1 + 1) = product = (colorB << 16) | colorB;
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darkened = (product = ((product >> 1) & colorMask));
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darkened += (product = ((product >> 1) & colorMask));
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darkened += (product >> 1) & colorMask;
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*(dP2 + 1) = darkened;
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}
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srcPtr += srcRowBytes;
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deltaPtr += srcRowBytes;
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dstPtr += dstRowBytes;
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dstPtr2 += dstRowBytes;
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}
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}
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void S9xBlitPixHiResTV16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
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{
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uint8 *dstPtr2 = dstPtr + dstRowBytes;
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dstRowBytes <<= 1;
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for (; height; height--)
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{
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uint32 *dP1 = (uint32 *) dstPtr, *dP2 = (uint32 *) dstPtr2, *bP = (uint32 *) srcPtr;
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uint32 product, darkened;
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for (int i = 0; i < (width >> 1); i++)
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{
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product = *dP1++ = *bP++;
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darkened = (product = (product >> 1) & colorMask);
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darkened += (product = (product >> 1) & colorMask);
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*dP2++ = darkened;
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}
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srcPtr += srcRowBytes;
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dstPtr += dstRowBytes;
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dstPtr2 += dstRowBytes;
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}
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}
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void S9xBlitPixHiResMixedTV16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
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{
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uint8 *dstPtr2 = dstPtr + dstRowBytes, *srcPtr2 = srcPtr + srcRowBytes;
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dstRowBytes <<= 1;
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for (; height > 1; height--)
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{
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uint16 *dP1 = (uint16 *) dstPtr, *dP2 = (uint16 *) dstPtr2, *bP1 = (uint16 *) srcPtr, *bP2 = (uint16 *) srcPtr2;
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uint16 prev, next, mixed;
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for (int i = 0; i < width; i++)
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{
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prev = *bP1++;
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next = *bP2++;
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mixed = prev + next + ((prev ^ next) & lowPixelMask);
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*dP1++ = prev;
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*dP2++ = (mixed >> 1) - (mixed >> 4 & qlowPixelMask);
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}
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srcPtr += srcRowBytes;
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srcPtr2 += srcRowBytes;
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dstPtr += dstRowBytes;
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dstPtr2 += dstRowBytes;
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}
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// Last 1 line
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uint16 *dP1 = (uint16 *) dstPtr, *dP2 = (uint16 *) dstPtr2, *bP1 = (uint16 *) srcPtr;
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uint16 prev, mixed;
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for (int i = 0; i < width; i++)
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{
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prev = *bP1++;
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mixed = prev + ((prev ^ 0) & lowPixelMask);
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*dP1++ = prev;
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*dP2++ = (mixed >> 1) - (mixed >> 4 & qlowPixelMask);
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}
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}
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void S9xBlitPixSmooth16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
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{
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uint8 *dstPtr2 = dstPtr + dstRowBytes, *deltaPtr = XDelta;
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uint32 lastLinePix[SNES_WIDTH << 1];
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uint8 lastLineChg[SNES_WIDTH >> 1];
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int lineBytes = width << 1;
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dstRowBytes <<= 1;
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memset(lastLinePix, 0, sizeof(lastLinePix));
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memset(lastLineChg, 0, sizeof(lastLineChg));
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for (; height; height--)
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{
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uint32 *dP1 = (uint32 *) dstPtr, *dP2 = (uint32 *) dstPtr2, *bP = (uint32 *) srcPtr, *xP = (uint32 *) deltaPtr;
|
|
uint32 *lL = lastLinePix;
|
|
uint8 *lC = lastLineChg;
|
|
uint32 currentPixel, nextPixel, currentDelta, nextDelta, lastPix, lastChg, thisChg, currentPixA, currentPixB, colorA, colorB, colorC;
|
|
uint16 savePixel;
|
|
|
|
savePixel = *(uint16 *) (srcPtr + lineBytes);
|
|
*(uint16 *) (srcPtr + lineBytes) = *(uint16 *) (srcPtr + lineBytes - 2);
|
|
*(uint32 *) (deltaPtr + lineBytes) = *(uint32 *) (srcPtr + lineBytes);
|
|
|
|
nextPixel = *bP++;
|
|
nextDelta = *xP++;
|
|
|
|
for (int i = 0; i < (width >> 1); i++)
|
|
{
|
|
currentPixel = nextPixel;
|
|
currentDelta = nextDelta;
|
|
nextPixel = *bP++;
|
|
nextDelta = *xP++;
|
|
lastChg = *lC;
|
|
thisChg = (nextPixel - nextDelta) | (currentPixel - currentDelta);
|
|
|
|
#ifdef MSB_FIRST
|
|
colorA = (currentPixel >> 16) & 0xFFFF;
|
|
colorB = (currentPixel ) & 0xFFFF;
|
|
colorC = (nextPixel >> 16) & 0xFFFF;
|
|
|
|
currentPixA = (colorA << 16) | ((((colorA >> 1) & colorMask) + ((colorB >> 1) & colorMask) + (colorA & colorB & lowPixelMask)) );
|
|
currentPixB = (colorB << 16) | ((((colorC >> 1) & colorMask) + ((colorB >> 1) & colorMask) + (colorC & colorB & lowPixelMask)) );
|
|
#else
|
|
colorA = (currentPixel ) & 0xFFFF;
|
|
colorB = (currentPixel >> 16) & 0xFFFF;
|
|
colorC = (nextPixel ) & 0xFFFF;
|
|
|
|
currentPixA = (colorA ) | ((((colorA >> 1) & colorMask) + ((colorB >> 1) & colorMask) + (colorA & colorB & lowPixelMask)) << 16);
|
|
currentPixB = (colorB ) | ((((colorC >> 1) & colorMask) + ((colorB >> 1) & colorMask) + (colorC & colorB & lowPixelMask)) << 16);
|
|
#endif
|
|
|
|
if (thisChg | lastChg)
|
|
{
|
|
xP[-2] = currentPixel;
|
|
|
|
lastPix = lL[0];
|
|
dP1[0] = ((currentPixA >> 1) & colorMask) + ((lastPix >> 1) & colorMask) + (currentPixA & lastPix & lowPixelMask);
|
|
dP2[0] = currentPixA;
|
|
lL[0] = currentPixA;
|
|
|
|
lastPix = lL[1];
|
|
dP1[1] = ((currentPixB >> 1) & colorMask) + ((lastPix >> 1) & colorMask) + (currentPixB & lastPix & lowPixelMask);
|
|
dP2[1] = currentPixB;
|
|
lL[1] = currentPixB;
|
|
|
|
*lC++ = (thisChg != 0);
|
|
}
|
|
else
|
|
{
|
|
lL[0] = currentPixA;
|
|
lL[1] = currentPixB;
|
|
*lC++ = 0;
|
|
}
|
|
|
|
lL += 2;
|
|
dP2 += 2;
|
|
dP1 += 2;
|
|
}
|
|
|
|
*(uint16 *) (srcPtr + lineBytes) = savePixel;
|
|
|
|
srcPtr += srcRowBytes;
|
|
deltaPtr += srcRowBytes;
|
|
dstPtr += dstRowBytes;
|
|
dstPtr2 += dstRowBytes;
|
|
}
|
|
}
|
|
|
|
void S9xBlitPixSuper2xSaI16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
|
|
{
|
|
Super2xSaI(srcPtr, srcRowBytes, dstPtr, dstRowBytes, width, height);
|
|
}
|
|
|
|
void S9xBlitPix2xSaI16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
|
|
{
|
|
_2xSaI(srcPtr, srcRowBytes, dstPtr, dstRowBytes, width, height);
|
|
}
|
|
|
|
void S9xBlitPixSuperEagle16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
|
|
{
|
|
SuperEagle(srcPtr, srcRowBytes, dstPtr, dstRowBytes, width, height);
|
|
}
|
|
|
|
void S9xBlitPixEPX16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
|
|
{
|
|
EPX_16(srcPtr, srcRowBytes, dstPtr, dstRowBytes, width, height);
|
|
}
|
|
|
|
void S9xBlitPixHQ2x16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
|
|
{
|
|
HQ2X_16(srcPtr, srcRowBytes, dstPtr, dstRowBytes, width, height);
|
|
}
|
|
|
|
void S9xBlitPixHQ3x16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
|
|
{
|
|
HQ3X_16(srcPtr, srcRowBytes, dstPtr, dstRowBytes, width, height);
|
|
}
|
|
|
|
void S9xBlitPixHQ4x16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
|
|
{
|
|
HQ4X_16(srcPtr, srcRowBytes, dstPtr, dstRowBytes, width, height);
|
|
}
|
|
|
|
void S9xBlitPixNTSC16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
|
|
{
|
|
snes_ntsc_blit(ntsc, (SNES_NTSC_IN_T const *) srcPtr, srcRowBytes >> 1, 0, width, height, dstPtr, dstRowBytes);
|
|
}
|
|
|
|
void S9xBlitPixHiResNTSC16 (uint8 *srcPtr, int srcRowBytes, uint8 *dstPtr, int dstRowBytes, int width, int height)
|
|
{
|
|
snes_ntsc_blit_hires(ntsc, (SNES_NTSC_IN_T const *) srcPtr, srcRowBytes >> 1, 0, width, height, dstPtr, dstRowBytes);
|
|
}
|