mirror of
https://github.com/dborth/snes9xgx.git
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828 lines
21 KiB
C++
828 lines
21 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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MSU-1 code
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(c) Copyright 2016 qwertymodo
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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 <math.h>
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#include "snes9x.h"
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#include "apu.h"
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#include "msu1.h"
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#include "snapshot.h"
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#include "display.h"
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#include "linear_resampler.h"
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#include "hermite_resampler.h"
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#define APU_DEFAULT_INPUT_RATE 32040
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#define APU_MINIMUM_SAMPLE_COUNT 512
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#define APU_MINIMUM_SAMPLE_BLOCK 128
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#define APU_NUMERATOR_NTSC 15664
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#define APU_DENOMINATOR_NTSC 328125
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#define APU_NUMERATOR_PAL 34176
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#define APU_DENOMINATOR_PAL 709379
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#define APU_DEFAULT_RESAMPLER HermiteResampler
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SNES_SPC *spc_core = NULL;
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static uint8 APUROM[64] =
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{
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0xCD, 0xEF, 0xBD, 0xE8, 0x00, 0xC6, 0x1D, 0xD0,
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0xFC, 0x8F, 0xAA, 0xF4, 0x8F, 0xBB, 0xF5, 0x78,
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0xCC, 0xF4, 0xD0, 0xFB, 0x2F, 0x19, 0xEB, 0xF4,
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0xD0, 0xFC, 0x7E, 0xF4, 0xD0, 0x0B, 0xE4, 0xF5,
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0xCB, 0xF4, 0xD7, 0x00, 0xFC, 0xD0, 0xF3, 0xAB,
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0x01, 0x10, 0xEF, 0x7E, 0xF4, 0x10, 0xEB, 0xBA,
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0xF6, 0xDA, 0x00, 0xBA, 0xF4, 0xC4, 0xF4, 0xDD,
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0x5D, 0xD0, 0xDB, 0x1F, 0x00, 0x00, 0xC0, 0xFF
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};
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namespace spc
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{
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static apu_callback sa_callback = NULL;
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static void *extra_data = NULL;
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static bool8 sound_in_sync = TRUE;
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static bool8 sound_enabled = FALSE;
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static int buffer_size;
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static int lag_master = 0;
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static int lag = 0;
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static uint8 *landing_buffer = NULL;
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static uint8 *shrink_buffer = NULL;
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static Resampler *resampler = NULL;
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static int32 reference_time;
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static uint32 remainder;
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static const int timing_hack_numerator = SNES_SPC::tempo_unit;
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static int timing_hack_denominator = SNES_SPC::tempo_unit;
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/* Set these to NTSC for now. Will change to PAL in S9xAPUTimingSetSpeedup
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if necessary on game load. */
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static uint32 ratio_numerator = APU_NUMERATOR_NTSC;
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static uint32 ratio_denominator = APU_DENOMINATOR_NTSC;
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static double dynamic_rate_multiplier = 1.0;
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}
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namespace msu
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{
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static int buffer_size;
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static uint8 *landing_buffer = NULL;
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static Resampler *resampler = NULL;
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static int resample_buffer_size = -1;
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static uint8 *resample_buffer = NULL;
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}
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static void EightBitize (uint8 *, int);
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static void DeStereo (uint8 *, int);
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static void ReverseStereo (uint8 *, int);
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void UpdatePlaybackRate (void);
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static void from_apu_to_state (uint8 **, void *, size_t);
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static void to_apu_from_state (uint8 **, void *, size_t);
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static void SPCSnapshotCallback (void);
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static inline int S9xAPUGetClock (int32);
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static inline int S9xAPUGetClockRemainder (int32);
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static void EightBitize (uint8 *buffer, int sample_count)
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{
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uint8 *buf8 = (uint8 *) buffer;
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int16 *buf16 = (int16 *) buffer;
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for (int i = 0; i < sample_count; i++)
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buf8[i] = (uint8) ((buf16[i] / 256) + 128);
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}
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static void DeStereo (uint8 *buffer, int sample_count)
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{
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int16 *buf = (int16 *) buffer;
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int32 s1, s2;
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for (int i = 0; i < (sample_count >> 1); i++)
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{
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s1 = (int32) buf[2 * i];
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s2 = (int32) buf[2 * i + 1];
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buf[i] = (int16) ((s1 + s2) >> 1);
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}
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}
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static void ReverseStereo (uint8 *src_buffer, int sample_count)
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{
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int16 *buffer = (int16 *) src_buffer;
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for (int i = 0; i < sample_count; i += 2)
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{
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buffer[i + 1] ^= buffer[i];
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buffer[i] ^= buffer[i + 1];
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buffer[i + 1] ^= buffer[i];
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}
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}
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bool8 S9xMixSamples (uint8 *buffer, int sample_count)
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{
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static int shrink_buffer_size = -1;
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uint8 *dest;
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if (!Settings.SixteenBitSound || !Settings.Stereo)
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{
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/* We still need both stereo samples for generating the mono sample */
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if (!Settings.Stereo)
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sample_count <<= 1;
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/* We still have to generate 16-bit samples for bit-dropping, too */
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if (shrink_buffer_size < (sample_count << 1))
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{
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delete[] spc::shrink_buffer;
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spc::shrink_buffer = new uint8[sample_count << 1];
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shrink_buffer_size = sample_count << 1;
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}
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dest = spc::shrink_buffer;
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}
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else
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dest = buffer;
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if (Settings.MSU1 && msu::resample_buffer_size < (sample_count << 3))
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{
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delete[] msu::resample_buffer;
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msu::resample_buffer = new uint8[sample_count << 3];
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msu::resample_buffer_size = sample_count << 3;
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}
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if (Settings.Mute)
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{
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memset(dest, 0, sample_count << 1);
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spc::resampler->clear();
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if(Settings.MSU1)
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msu::resampler->clear();
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return (FALSE);
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}
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else
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{
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if (spc::resampler->avail() >= (sample_count + spc::lag))
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{
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spc::resampler->read((short *) dest, sample_count);
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if (spc::lag == spc::lag_master)
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spc::lag = 0;
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if (Settings.MSU1)
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{
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if (msu::resampler->avail() >= sample_count)
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{
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msu::resampler->read((short *)msu::resample_buffer, sample_count);
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for (int32 i = 0; i < sample_count; ++i)
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*((int16*)(dest+(i * 2))) += *((int16*)(msu::resample_buffer+(i * 2)));
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}
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}
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}
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else
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{
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memset(buffer, (Settings.SixteenBitSound ? 0 : 128), (sample_count << (Settings.SixteenBitSound ? 1 : 0)) >> (Settings.Stereo ? 0 : 1));
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if (spc::lag == 0)
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spc::lag = spc::lag_master;
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return (FALSE);
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}
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}
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if (Settings.ReverseStereo && Settings.Stereo)
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ReverseStereo(dest, sample_count);
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if (!Settings.Stereo || !Settings.SixteenBitSound)
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{
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if (!Settings.Stereo)
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{
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DeStereo(dest, sample_count);
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sample_count >>= 1;
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}
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if (!Settings.SixteenBitSound)
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EightBitize(dest, sample_count);
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memcpy(buffer, dest, (sample_count << (Settings.SixteenBitSound ? 1 : 0)));
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}
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return (TRUE);
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}
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int S9xGetSampleCount (void)
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{
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return (spc::resampler->avail() >> (Settings.Stereo ? 0 : 1));
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}
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#ifdef GEKKO
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void S9xIncreaseDynamicRateMultiplier ()
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{
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if(spc::dynamic_rate_multiplier != 1.005) {
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spc::dynamic_rate_multiplier = 1.005;
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UpdatePlaybackRate();
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}
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}
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void S9xResetDynamicRateMultiplier ()
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{
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if(spc::dynamic_rate_multiplier != 1.0) {
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spc::dynamic_rate_multiplier = 1.0;
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UpdatePlaybackRate();
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}
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}
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#endif
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void S9xFinalizeSamples (void)
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{
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bool drop_current_msu1_samples = TRUE;
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if (!Settings.Mute)
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{
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if(!spc::sound_in_sync) {
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S9xIncreaseDynamicRateMultiplier();
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}
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drop_current_msu1_samples = FALSE;
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if (!spc::resampler->push((short *) spc::landing_buffer, spc_core->sample_count()))
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{
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/* We weren't able to process the entire buffer. Potential overrun. */
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spc::sound_in_sync = FALSE;
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if (Settings.SoundSync && !Settings.TurboMode)
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return;
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// since we drop the current dsp samples we also want to drop generated msu1 samples
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drop_current_msu1_samples = TRUE;
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}
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}
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// only generate msu1 if we really consumed the dsp samples (sample_count() resets at end of function),
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// otherwise we will generate multiple times for the same samples - so this needs to be after all early
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// function returns
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if (Settings.MSU1)
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{
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// generate the same number of msu1 samples as dsp samples were generated
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S9xMSU1SetOutput((int16 *)msu::landing_buffer, msu::buffer_size);
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S9xMSU1Generate(spc_core->sample_count());
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if (!drop_current_msu1_samples && !msu::resampler->push((short *)msu::landing_buffer, S9xMSU1Samples()))
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{
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// should not occur, msu buffer is larger and we drop msu samples if spc buffer overruns
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}
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}
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if (!Settings.SoundSync || Settings.TurboMode || Settings.Mute)
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spc::sound_in_sync = TRUE;
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else
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if (spc::resampler->space_empty() >= spc::resampler->space_filled())
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spc::sound_in_sync = TRUE;
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else
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spc::sound_in_sync = FALSE;
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if(spc::sound_in_sync) {
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S9xResetDynamicRateMultiplier ();
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}
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spc_core->set_output((SNES_SPC::sample_t *) spc::landing_buffer, spc::buffer_size >> 1);
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}
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void S9xLandSamples (void)
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{
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if (spc::sa_callback != NULL)
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spc::sa_callback(spc::extra_data);
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else
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S9xFinalizeSamples();
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}
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void S9xClearSamples (void)
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{
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spc::resampler->clear();
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if (Settings.MSU1)
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msu::resampler->clear();
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spc::lag = spc::lag_master;
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}
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bool8 S9xSyncSound (void)
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{
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if (!Settings.SoundSync || spc::sound_in_sync)
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return (TRUE);
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S9xLandSamples();
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return (spc::sound_in_sync);
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}
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void S9xSetSamplesAvailableCallback (apu_callback callback, void *data)
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{
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spc::sa_callback = callback;
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spc::extra_data = data;
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}
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void UpdatePlaybackRate (void)
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{
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if (Settings.SoundInputRate == 0)
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Settings.SoundInputRate = APU_DEFAULT_INPUT_RATE;
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double time_ratio = (double) Settings.SoundInputRate * spc::timing_hack_numerator / (Settings.SoundPlaybackRate * spc::timing_hack_denominator);
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if (Settings.DynamicRateControl)
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{
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time_ratio *= spc::dynamic_rate_multiplier;
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}
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spc::resampler->time_ratio(time_ratio);
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if (Settings.MSU1)
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{
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time_ratio = (44100.0 / Settings.SoundPlaybackRate) * (Settings.SoundInputRate / 32040.0);
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msu::resampler->time_ratio(time_ratio);
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}
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}
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bool8 S9xInitSound (int buffer_ms, int lag_ms)
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{
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// buffer_ms : buffer size given in millisecond
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// lag_ms : allowable time-lag given in millisecond
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int sample_count = buffer_ms * 32040 / 1000;
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int lag_sample_count = lag_ms * 32040 / 1000;
|
|
|
|
spc::lag_master = lag_sample_count;
|
|
if (Settings.Stereo)
|
|
spc::lag_master <<= 1;
|
|
spc::lag = spc::lag_master;
|
|
|
|
if (sample_count < APU_MINIMUM_SAMPLE_COUNT)
|
|
sample_count = APU_MINIMUM_SAMPLE_COUNT;
|
|
|
|
spc::buffer_size = sample_count;
|
|
if (Settings.Stereo)
|
|
spc::buffer_size <<= 1;
|
|
if (Settings.SixteenBitSound)
|
|
spc::buffer_size <<= 1;
|
|
msu::buffer_size = sample_count << 3; // Always 16-bit, Stereo; x2 to never overflow before dsp buffer
|
|
|
|
printf("Sound buffer size: %d (%d samples)\n", spc::buffer_size, sample_count);
|
|
|
|
if (spc::landing_buffer)
|
|
delete[] spc::landing_buffer;
|
|
spc::landing_buffer = new uint8[spc::buffer_size * 2];
|
|
if (!spc::landing_buffer)
|
|
return (FALSE);
|
|
if (msu::landing_buffer)
|
|
delete[] msu::landing_buffer;
|
|
msu::landing_buffer = (uint8*) new uint32[msu::buffer_size / 2]; // Ensure 4-byte alignment
|
|
if (!msu::landing_buffer)
|
|
return (FALSE);
|
|
|
|
/* The resampler and spc unit use samples (16-bit short) as
|
|
arguments. Use 2x in the resampler for buffer leveling with SoundSync */
|
|
if (!spc::resampler)
|
|
{
|
|
spc::resampler = new APU_DEFAULT_RESAMPLER(spc::buffer_size >> (Settings.SoundSync ? 0 : 1));
|
|
if (!spc::resampler)
|
|
{
|
|
delete[] spc::landing_buffer;
|
|
return (FALSE);
|
|
}
|
|
}
|
|
else
|
|
spc::resampler->resize(spc::buffer_size >> (Settings.SoundSync ? 0 : 1));
|
|
|
|
|
|
if (!msu::resampler)
|
|
{
|
|
msu::resampler = new APU_DEFAULT_RESAMPLER(msu::buffer_size >> (Settings.SoundSync ? 0 : 1));
|
|
if (!msu::resampler)
|
|
{
|
|
delete[] msu::landing_buffer;
|
|
return (FALSE);
|
|
}
|
|
}
|
|
else
|
|
msu::resampler->resize(msu::buffer_size);
|
|
|
|
spc_core->set_output((SNES_SPC::sample_t *) spc::landing_buffer, spc::buffer_size >> 1);
|
|
|
|
UpdatePlaybackRate();
|
|
|
|
spc::sound_enabled = S9xOpenSoundDevice();
|
|
|
|
return (spc::sound_enabled);
|
|
}
|
|
|
|
void S9xSetSoundControl (uint8 voice_switch)
|
|
{
|
|
spc_core->dsp_set_stereo_switch(voice_switch << 8 | voice_switch);
|
|
}
|
|
|
|
void S9xSetSoundMute (bool8 mute)
|
|
{
|
|
Settings.Mute = mute;
|
|
if (!spc::sound_enabled)
|
|
Settings.Mute = TRUE;
|
|
}
|
|
|
|
void S9xDumpSPCSnapshot (void)
|
|
{
|
|
spc_core->dsp_dump_spc_snapshot();
|
|
}
|
|
|
|
static void SPCSnapshotCallback (void)
|
|
{
|
|
S9xSPCDump(S9xGetFilenameInc((".spc"), SPC_DIR));
|
|
printf("Dumped key-on triggered spc snapshot.\n");
|
|
}
|
|
|
|
bool8 S9xInitAPU (void)
|
|
{
|
|
spc_core = new SNES_SPC;
|
|
if (!spc_core)
|
|
return (FALSE);
|
|
|
|
spc_core->init();
|
|
spc_core->init_rom(APUROM);
|
|
|
|
spc_core->dsp_set_spc_snapshot_callback(SPCSnapshotCallback);
|
|
|
|
spc::landing_buffer = NULL;
|
|
spc::shrink_buffer = NULL;
|
|
spc::resampler = NULL;
|
|
msu::resampler = NULL;
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
void S9xDeinitAPU (void)
|
|
{
|
|
if (spc_core)
|
|
{
|
|
delete spc_core;
|
|
spc_core = NULL;
|
|
}
|
|
|
|
if (spc::resampler)
|
|
{
|
|
delete spc::resampler;
|
|
spc::resampler = NULL;
|
|
}
|
|
|
|
if (spc::landing_buffer)
|
|
{
|
|
delete[] spc::landing_buffer;
|
|
spc::landing_buffer = NULL;
|
|
}
|
|
|
|
if (spc::shrink_buffer)
|
|
{
|
|
delete[] spc::shrink_buffer;
|
|
spc::shrink_buffer = NULL;
|
|
}
|
|
|
|
if (msu::resampler)
|
|
{
|
|
delete msu::resampler;
|
|
msu::resampler = NULL;
|
|
}
|
|
|
|
if (msu::landing_buffer)
|
|
{
|
|
delete[] msu::landing_buffer;
|
|
msu::landing_buffer = NULL;
|
|
}
|
|
|
|
if (msu::resample_buffer)
|
|
{
|
|
delete[] msu::resample_buffer;
|
|
msu::resample_buffer = NULL;
|
|
}
|
|
|
|
S9xMSU1DeInit();
|
|
}
|
|
|
|
static inline int S9xAPUGetClock (int32 cpucycles)
|
|
{
|
|
return (spc::ratio_numerator * (cpucycles - spc::reference_time) + spc::remainder) /
|
|
spc::ratio_denominator;
|
|
}
|
|
|
|
static inline int S9xAPUGetClockRemainder (int32 cpucycles)
|
|
{
|
|
return (spc::ratio_numerator * (cpucycles - spc::reference_time) + spc::remainder) %
|
|
spc::ratio_denominator;
|
|
}
|
|
|
|
uint8 S9xAPUReadPort (int port)
|
|
{
|
|
return ((uint8) spc_core->read_port(S9xAPUGetClock(CPU.Cycles), port));
|
|
}
|
|
|
|
void S9xAPUWritePort (int port, uint8 byte)
|
|
{
|
|
spc_core->write_port(S9xAPUGetClock(CPU.Cycles), port, byte);
|
|
}
|
|
|
|
void S9xAPUSetReferenceTime (int32 cpucycles)
|
|
{
|
|
spc::reference_time = cpucycles;
|
|
}
|
|
|
|
void S9xAPUExecute (void)
|
|
{
|
|
/* Accumulate partial APU cycles */
|
|
spc_core->end_frame(S9xAPUGetClock(CPU.Cycles));
|
|
|
|
spc::remainder = S9xAPUGetClockRemainder(CPU.Cycles);
|
|
|
|
S9xAPUSetReferenceTime(CPU.Cycles);
|
|
}
|
|
|
|
void S9xAPUEndScanline (void)
|
|
{
|
|
S9xAPUExecute();
|
|
|
|
if (spc_core->sample_count() >= APU_MINIMUM_SAMPLE_BLOCK || !spc::sound_in_sync)
|
|
S9xLandSamples();
|
|
}
|
|
|
|
void S9xAPUTimingSetSpeedup (int ticks)
|
|
{
|
|
if (ticks != 0)
|
|
printf("APU speedup hack: %d\n", ticks);
|
|
|
|
spc::timing_hack_denominator = SNES_SPC::tempo_unit - ticks;
|
|
spc_core->set_tempo(spc::timing_hack_denominator);
|
|
|
|
spc::ratio_numerator = Settings.PAL ? APU_NUMERATOR_PAL : APU_NUMERATOR_NTSC;
|
|
spc::ratio_denominator = Settings.PAL ? APU_DENOMINATOR_PAL : APU_DENOMINATOR_NTSC;
|
|
spc::ratio_denominator = spc::ratio_denominator * spc::timing_hack_denominator / spc::timing_hack_numerator;
|
|
|
|
UpdatePlaybackRate();
|
|
}
|
|
|
|
void S9xAPUAllowTimeOverflow (bool allow)
|
|
{
|
|
spc_core->spc_allow_time_overflow(allow);
|
|
}
|
|
|
|
void S9xResetAPU (void)
|
|
{
|
|
spc::reference_time = 0;
|
|
spc::remainder = 0;
|
|
spc_core->reset();
|
|
spc_core->set_output((SNES_SPC::sample_t *) spc::landing_buffer, spc::buffer_size >> 1);
|
|
|
|
spc::resampler->clear();
|
|
|
|
if (Settings.MSU1)
|
|
msu::resampler->clear();
|
|
}
|
|
|
|
void S9xSoftResetAPU (void)
|
|
{
|
|
spc::reference_time = 0;
|
|
spc::remainder = 0;
|
|
spc_core->soft_reset();
|
|
spc_core->set_output((SNES_SPC::sample_t *) spc::landing_buffer, spc::buffer_size >> 1);
|
|
|
|
spc::resampler->clear();
|
|
|
|
if (Settings.MSU1)
|
|
msu::resampler->clear();
|
|
}
|
|
|
|
static void from_apu_to_state (uint8 **buf, void *var, size_t size)
|
|
{
|
|
memcpy(*buf, var, size);
|
|
*buf += size;
|
|
}
|
|
|
|
static void to_apu_from_state (uint8 **buf, void *var, size_t size)
|
|
{
|
|
memcpy(var, *buf, size);
|
|
*buf += size;
|
|
}
|
|
|
|
void S9xAPUSaveState (uint8 *block)
|
|
{
|
|
uint8 *ptr = block;
|
|
|
|
spc_core->copy_state(&ptr, from_apu_to_state);
|
|
|
|
SET_LE32(ptr, spc::reference_time);
|
|
ptr += sizeof(int32);
|
|
SET_LE32(ptr, spc::remainder);
|
|
}
|
|
|
|
void S9xAPULoadState (uint8 *block)
|
|
{
|
|
uint8 *ptr = block;
|
|
|
|
S9xResetAPU();
|
|
|
|
spc_core->copy_state(&ptr, to_apu_from_state);
|
|
|
|
spc::reference_time = GET_LE32(ptr);
|
|
ptr += sizeof(int32);
|
|
spc::remainder = GET_LE32(ptr);
|
|
}
|
|
|
|
bool8 S9xSPCDump (const char *filename)
|
|
{
|
|
FILE *fs;
|
|
uint8 buf[SNES_SPC::spc_file_size];
|
|
size_t ignore;
|
|
|
|
fs = fopen(filename, "wb");
|
|
if (!fs)
|
|
return (FALSE);
|
|
|
|
S9xSetSoundMute(TRUE);
|
|
|
|
spc_core->init_header(buf);
|
|
spc_core->save_spc(buf);
|
|
|
|
ignore = fwrite(buf, SNES_SPC::spc_file_size, 1, fs);
|
|
|
|
fclose(fs);
|
|
|
|
S9xSetSoundMute(FALSE);
|
|
|
|
return (TRUE);
|
|
}
|