mirror of
https://github.com/libretro/snes9x.git
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508 lines
14 KiB
C++
508 lines
14 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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// CDirectSound.cpp: implementation of the CDirectSound class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "wsnes9x.h"
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#include "../snes9x.h"
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#include "../apu/apu.h"
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#include "CDirectSound.h"
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#include <process.h>
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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CDirectSound::CDirectSound()
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{
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lpDS = NULL;
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lpDSB = NULL;
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lpDSBPrimary = NULL;
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initDone = NULL;
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blockCount = 0;
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blockSize = 0;
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bufferSize = 0;
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blockSamples = 0;
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hTimer = NULL;
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}
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CDirectSound::~CDirectSound()
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{
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DeInitDirectSound();
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}
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/* CDirectSound::InitDirectSound
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initializes the DirectSound object, the timer queue for the mixing timer, and sets the cooperation level
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-----
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returns true if successful, false otherwise
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*/
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bool CDirectSound::InitDirectSound ()
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{
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HRESULT dErr;
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if(initDone)
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return true;
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if (!lpDS)
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{
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dErr = DirectSoundCreate (NULL, &lpDS, NULL);
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if (dErr != DS_OK)
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{
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MessageBox (GUI.hWnd, TEXT("\
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Unable to initialise DirectSound. You will not be able to hear any\n\
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sound effects or music while playing.\n\n\
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It is usually caused by not having DirectX installed, another\n\
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application that has already opened DirectSound in exclusive\n\
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mode or the Windows WAVE device has been opened."),
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TEXT("Snes9X - Unable to Open DirectSound"),
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MB_OK | MB_ICONWARNING);
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return (false);
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}
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}
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initDone = true;
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dErr = lpDS->SetCooperativeLevel (GUI.hWnd, DSSCL_PRIORITY | DSSCL_EXCLUSIVE);
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if (!SUCCEEDED(dErr))
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{
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dErr = lpDS->SetCooperativeLevel (GUI.hWnd, DSSCL_PRIORITY);
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if (!SUCCEEDED(dErr))
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{
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if (!SUCCEEDED(lpDS -> SetCooperativeLevel (GUI.hWnd, DSSCL_NORMAL)))
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{
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DeInitDirectSound();
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initDone = false;
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}
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if (initDone)
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MessageBox (GUI.hWnd, TEXT("\
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Unable to set DirectSound's priority cooperative level.\n\
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Another application is dicating the sound playback rate,\n\
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sample size and mono/stereo setting."),
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TEXT("Snes9X - Unable to Set DirectSound priority"),
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MB_OK | MB_ICONWARNING);
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else
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MessageBox (GUI.hWnd, TEXT("\
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Unable to set any DirectSound cooperative level. You will\n\
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not be able to hear any sound effects or music while playing.\n\n\
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It is usually caused by another application that has already\n\
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opened DirectSound in exclusive mode."),
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TEXT("Snes9X - Unable to DirectSound"),
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MB_OK | MB_ICONWARNING);
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}
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}
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return (initDone);
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}
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/* CDirectSound::DeInitDirectSound
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releases all DirectSound objects and buffers
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*/
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void CDirectSound::DeInitDirectSound()
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{
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initDone = false;
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DeInitSoundBuffer();
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if( lpDS != NULL)
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{
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lpDS->SetCooperativeLevel (GUI.hWnd, DSSCL_NORMAL);
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lpDS->Release ();
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lpDS = NULL;
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}
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}
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/* CDirectSound::InitSoundBuffer
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creates the DirectSound buffers and allocates the temp buffer for SoundSync
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-----
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returns true if successful, false otherwise
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*/
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bool CDirectSound::InitSoundBuffer()
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{
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DSBUFFERDESC dsbd;
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WAVEFORMATEX wfx,wfx_actual;
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HRESULT dErr;
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blockCount = 4;
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blockTime = GUI.SoundBufferSize / blockCount;
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blockSamples = (Settings.SoundPlaybackRate * blockTime * (Settings.Stereo ? 2 : 1)) / 1000;
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blockSize = blockSamples * (Settings.SixteenBitSound ? 2 : 1);
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bufferSize = blockSize * blockCount;
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wfx.wFormatTag = WAVE_FORMAT_PCM;
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wfx.nChannels = Settings.Stereo ? 2 : 1;
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wfx.nSamplesPerSec = Settings.SoundPlaybackRate;
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wfx.nBlockAlign = (Settings.SixteenBitSound ? 2 : 1) * (Settings.Stereo ? 2 : 1);
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wfx.wBitsPerSample = Settings.SixteenBitSound ? 16 : 8;
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wfx.nAvgBytesPerSec = wfx.nSamplesPerSec * wfx.nBlockAlign;
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wfx.cbSize = 0;
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ZeroMemory (&dsbd, sizeof(DSBUFFERDESC) );
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dsbd.dwSize = sizeof(dsbd);
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dsbd.dwFlags = DSBCAPS_PRIMARYBUFFER | DSBCAPS_STICKYFOCUS;
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dErr = lpDS->CreateSoundBuffer (&dsbd, &lpDSBPrimary, NULL);
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if (dErr != DS_OK)
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{
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lpDSB = NULL;
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return (false);
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}
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lpDSBPrimary->SetFormat (&wfx);
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if (lpDSBPrimary->GetFormat (&wfx_actual, sizeof (wfx_actual), NULL) == DS_OK)
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{
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if(wfx.nSamplesPerSec!=wfx_actual.nSamplesPerSec ||
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wfx_actual.nChannels != wfx.nChannels || wfx.wBitsPerSample != wfx_actual.wBitsPerSample) {
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return false;
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}
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}
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lpDSBPrimary->Play (0, 0, DSBPLAY_LOOPING);
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ZeroMemory (&dsbd, sizeof (dsbd));
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dsbd.dwSize = sizeof( dsbd);
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dsbd.dwFlags = DSBCAPS_CTRLFREQUENCY | DSBCAPS_CTRLVOLUME |
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DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_STICKYFOCUS | DSBCAPS_CTRLPOSITIONNOTIFY;
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dsbd.dwBufferBytes = bufferSize;
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dsbd.lpwfxFormat = &wfx;
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if (lpDS->CreateSoundBuffer (&dsbd, &lpDSB, NULL) != DS_OK)
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{
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lpDSBPrimary->Release ();
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lpDSBPrimary = NULL;
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lpDSB->Release();
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lpDSB = NULL;
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return (false);
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}
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return true;
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}
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/* CDirectSound::DeInitSoundBuffer
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deinitializes the DirectSound/temp buffers and stops the mixing timer
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*/
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void CDirectSound::DeInitSoundBuffer()
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{
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if(hTimer) {
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timeKillEvent(hTimer);
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hTimer = NULL;
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}
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if( lpDSB != NULL)
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{
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lpDSB->Stop ();
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lpDSB->Release();
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lpDSB = NULL;
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}
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if( lpDSBPrimary != NULL)
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{
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lpDSBPrimary->Stop ();
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lpDSBPrimary->Release();
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lpDSBPrimary = NULL;
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}
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}
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/* CDirectSound::SetupSound
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applies sound setting changes by recreating the buffers and starting a new mixing timer
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it fills the buffer before starting playback
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-----
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returns true if successful, false otherwise
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*/
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bool CDirectSound::SetupSound()
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{
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HRESULT hResult;
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if(!initDone)
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return false;
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DeInitSoundBuffer();
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InitSoundBuffer();
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BYTE *B1;
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DWORD S1;
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hResult = lpDSB->Lock (0, 0, (void **)&B1,
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&S1, NULL, NULL, DSBLOCK_ENTIREBUFFER);
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if (hResult == DSERR_BUFFERLOST)
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{
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lpDSB->Restore ();
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hResult = lpDSB->Lock (0, 0, (void **)&B1,
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&S1, NULL, NULL, DSBLOCK_ENTIREBUFFER);
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}
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if (!SUCCEEDED(hResult))
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{
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hResult = lpDSB -> Unlock (B1, S1, NULL, NULL);
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return true;
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}
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S9xMixSamples(B1,blockSamples * blockCount);
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lpDSB->Unlock(B1,S1,NULL,NULL);
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lpDSB->Play (0, 0, DSBPLAY_LOOPING);
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last_block = blockCount - 1;
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hTimer = timeSetEvent (blockTime/2, blockTime/2, SoundTimerCallback, (DWORD_PTR)this, TIME_PERIODIC);
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if(!hTimer) {
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DeInitSoundBuffer();
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return false;
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}
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return (true);
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}
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/* CDirectSound::ProcessSound
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Finishes core sample creation, syncronizes the buffer access.
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*/
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void CDirectSound::ProcessSound()
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{
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EnterCriticalSection(&GUI.SoundCritSect);
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S9xFinalizeSamples();
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LeaveCriticalSection(&GUI.SoundCritSect);
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}
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/* CDirectSound::MixSound
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the mixing function called by the mix timer
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uses the current play position to decide if a new block can be filled with audio data
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synchronizes the core buffer access with a critical section
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*/
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void CDirectSound::MixSound()
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{
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DWORD play_pos = 0, write_pos = 0;
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HRESULT hResult;
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DWORD curr_block;
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if(!initDone)
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return;
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lpDSB->GetCurrentPosition (&play_pos, NULL);
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curr_block = ((play_pos / blockSize) + blockCount) % blockCount;
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if (curr_block != last_block)
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{
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BYTE *B1, *B2;
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DWORD S1, S2;
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write_pos = curr_block * blockSize;
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last_block = curr_block;
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hResult = lpDSB->Lock (write_pos, blockSize, (void **)&B1,
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&S1, (void **)&B2, &S2, 0);
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if (hResult == DSERR_BUFFERLOST)
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{
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lpDSB->Restore ();
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hResult = lpDSB->Lock (write_pos, blockSize,
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(void **)&B1, &S1, (void **)&B2,
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&S2, 0);
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}
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if (!SUCCEEDED(hResult))
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{
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hResult = lpDSB -> Unlock (B1, S1, B2, S2);
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return;
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}
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EnterCriticalSection(&GUI.SoundCritSect);
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if (B1)
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{
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S9xMixSamples(B1,(Settings.SixteenBitSound?S1>>1:S1));
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}
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if (B2)
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{
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S9xMixSamples(B2,(Settings.SixteenBitSound?S2>>1:S2));
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}
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LeaveCriticalSection(&GUI.SoundCritSect);
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hResult = lpDSB -> Unlock (B1, S1, B2, S2);
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if (!SUCCEEDED(hResult))
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return;
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}
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}
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/* CDirectSound::SoundTimerCallback
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Timer callback that tries to mix a new block. Called twice each block.
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*/
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VOID CALLBACK CDirectSound::SoundTimerCallback(UINT uTimerID, UINT uMsg, DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2) {
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CDirectSound *S9xDirectSound = (CDirectSound *)dwUser;
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S9xDirectSound->MixSound();
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}
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