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/////////////////////////////////////////////////////////////////////////////
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// $Id: DI_OldGame.c,v 1.2 2005/02/05 22:19:34 mschimek Exp $
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/////////////////////////////////////////////////////////////////////////////
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// Copyright (c) 2001 Lindsey Dubb. All rights reserved.
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// based on OddOnly and Temporal Noise DScaler Plugins
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// (c) John Adcock & Steve Grimm
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/////////////////////////////////////////////////////////////////////////////
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// This file is subject to the terms of the GNU General Public License as
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// published by the Free Software Foundation. A copy of this license is
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// included with this software distribution in the file COPYING. If you
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// do not have a copy, you may obtain a copy by writing to the Free
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// Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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// This software is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details
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/////////////////////////////////////////////////////////////////////////////
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// $Log: DI_OldGame.c,v $
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// Revision 1.2 2005/02/05 22:19:34 mschimek
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// Revision 1.1 2005/01/08 14:34:43 mschimek
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// TomsMoCompMethod, MoComp2Method, VideoWeaveMethod, VideoBobMethod,
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// TwoFrameMethod, OldGameMethod, Greedy2FrameMethod, GreedyMethod,
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// DI_GreedyHSettings: Localized.
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// Revision 1.2 2004/11/15 23:03:19 michael
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// *** empty log message ***
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// Revision 1.1 2004/11/14 15:35:14 michael
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// *** empty log message ***
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// Revision 1.6 2002/06/13 12:10:24 adcockj
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// Move to new Setings dialog for filers, video deint and advanced settings
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// Revision 1.5 2002/01/04 01:38:56 lindsey
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// Turned off the debug flag
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// Revision 1.4 2001/12/20 03:42:58 lindsey
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// Corrected processor detection
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// Miscellaneous reorganization
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// Revision 1.3 2001/11/21 15:21:40 adcockj
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// Renamed DEINTERLACE_INFO to TDeinterlaceInfo in line with standards
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// Changed TDeinterlaceInfo structure to have history of pictures.
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// Revision 1.2 2001/08/30 10:03:52 adcockj
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// Slightly improved the color averaging
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// Added a "composite mode" switch to force averaging when crosstalk is more important than blur.
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// Reorganized and edited to follow the coding guidelines
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// Most importantly: Added a silly quote
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// (Changes made on behalf of Lindsey Dubb)
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// Revision 1.1 2001/07/30 08:25:22 adcockj
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// Added Lindsey Dubb's method
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/////////////////////////////////////////////////////////////////////////////
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#include "DS_Deinterlace.h"
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//Z #include "..\help\helpids.h"
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//uncomment to turn on display of the comb factor
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//#define OLDGAME_DEBUG
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/////////////////////////////////////////////////////////////////////////////
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Up and down, up and down. Pardon me, but my lunch wants to join the sea.
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This is the Old Game "deinterlacing" method. More accurately, it's the Old
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Game nondeinterlacing method, which circumvents the deinterlacing done in the
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It assumes that the image is half vertical resolution and progressive, and
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therefore shouldn't be deinterlaced. In addition, it averages when there
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isn't any detected motion in order to clean up noise a bit. This works well
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for games which run at less than a full 50 or 60 FPS. It's downright
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necessary if the game is connected via composite, since video games tend
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to have awful chroma/luma crosstalk.
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Ways this filter could be improved:
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- The Playstation, Super Nintendo, Saturn, and Nintendo 64 all can switch
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between an interlaced and a progressive half vertical resolution mode.
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It would be nice to be able to automatically detect this and forward the
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deinterlacing on to a real deinterlacing algorithm. But this would
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require DScaler to keep checking whether the vertical resolution has
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changed, which it currently doesn't.
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- Potentially, you could also try to infer the horizontal resolution,
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deconvolve the image, and smooth it more optimally. I really doubt
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it would be worth the effort.
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- The difference between fields could be used in composite mode to infer
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motion. But it often makes sense to average even when there is some
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30 FPS motion, so this wouldn't be easy.
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/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
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// Function prototypes
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/////////////////////////////////////////////////////////////////////////////
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__declspec(dllexport) DEINTERLACE_METHOD* GetDeinterlacePluginInfo(long CpuFeatureFlags);
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BOOL WINAPI _DllMainCRTStartup(HANDLE hInst, ULONG ul_reason_for_call, LPVOID lpReserved);
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long OldGameFilter_SSE(TDeinterlaceInfo *pInfo);
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long OldGameFilter_3DNOW(TDeinterlaceInfo *pInfo);
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long OldGameFilter_MMX(TDeinterlaceInfo *pInfo);
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void __cdecl OldGameDebugStart(long NumPlugIns, DEINTERLACE_METHOD** OtherPlugins,
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DEINTERLACEPLUGINSETSTATUS* SetStatus);
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/////////////////////////////////////////////////////////////////////////////
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// Begin plugin globals
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/////////////////////////////////////////////////////////////////////////////
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// gMaxComb is compared to the comb factor to determine if the image has
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// enough motion to force us to send the image to the screen unaltered
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// instead of averaging witht he previous image.
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static long gMaxComb = 300;
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// When using a composite connector, crosstalk is bad enough that it's
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// (almost) always worth averaging.
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static long gDisableMotionChecking = FALSE;
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// This is used to put up the comb factor for testing purposes.
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static DEINTERLACEPLUGINSETSTATUS* gPfnSetStatus = NULL;
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static DEINTERLACE_METHOD OldGameMethod;
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static SETTING DI_OldGameSettings[DI_OLDGAME_SETTING_LASTONE] =
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N_("Maximum motion"), SLIDER, 0, &gMaxComb,
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"DI_OldGame", "maxComb", NULL,
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N_("Composite mode"), ONOFF, 0, &gDisableMotionChecking,
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"DI_OldGame", "CompositeMode", NULL,
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static DEINTERLACE_METHOD OldGameMethod =
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sizeof(DEINTERLACE_METHOD),
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DEINTERLACE_CURRENT_VERSION,
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NULL, // It could make sense to use this with a resolution sensing adaptive filter
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DI_OLDGAME_SETTING_LASTONE,
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/////////////////////////////////////////////////////////////////////////////
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// Main code (included from Dl_OldGame.asm)
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/////////////////////////////////////////////////////////////////////////////
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#include "DI_OldGame.asm"
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#include "DI_OldGame.asm"
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#include "DI_OldGame.asm"
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////////////////////////////////////////////////////////////////////////////
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// Start of utility code
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/////////////////////////////////////////////////////////////////////////////
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void __cdecl OldGameDebugStart(long NumPlugIns, DEINTERLACE_METHOD** OtherPlugins, DEINTERLACEPLUGINSETSTATUS* SetStatus)
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gPfnSetStatus = SetStatus;
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#endif // OLDGAME_DEBUG
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DEINTERLACE_METHOD* DI_OldGame_GetDeinterlacePluginInfo(long CpuFeatureFlags)
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if ((CpuFeatureFlags & FEATURE_SSE) || (CpuFeatureFlags & FEATURE_MMXEXT))
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OldGameMethod.pfnAlgorithm = OldGameFilter_SSE;
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else if (CpuFeatureFlags & FEATURE_3DNOW)
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OldGameMethod.pfnAlgorithm = OldGameFilter_3DNOW;
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OldGameMethod.pfnAlgorithm = OldGameFilter_MMX;
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return &OldGameMethod;
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BOOL WINAPI _DllMainCRTStartup(HANDLE hInst, ULONG ul_reason_for_call, LPVOID lpReserved)
added
removed
plugins/deinterlace/DI_Misc/DI_OldGame.c
