mirror of
https://github.com/dborth/snes9xgx.git
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316 lines
8.9 KiB
C++
316 lines
8.9 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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#ifdef HAVE_LIBPNG
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#include <png.h>
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#endif
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#include "snes9x.h"
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#include "memmap.h"
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#include "display.h"
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#include "screenshot.h"
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bool8 S9xDoScreenshot (int width, int height)
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{
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Settings.TakeScreenshot = FALSE;
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#ifdef HAVE_LIBPNG
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FILE *fp;
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png_structp png_ptr;
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png_infop info_ptr;
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png_color_8 sig_bit;
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int imgwidth, imgheight;
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const char *fname;
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fname = S9xGetFilenameInc(".png", SCREENSHOT_DIR);
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fp = fopen(fname, "wb");
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if (!fp)
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{
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S9xMessage(S9X_ERROR, 0, "Failed to take screenshot.");
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return (FALSE);
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}
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png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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if (!png_ptr)
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{
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fclose(fp);
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remove(fname);
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S9xMessage(S9X_ERROR, 0, "Failed to take screenshot.");
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return (FALSE);
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}
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info_ptr = png_create_info_struct(png_ptr);
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if (!info_ptr)
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{
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png_destroy_write_struct(&png_ptr, (png_infopp) NULL);
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fclose(fp);
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remove(fname);
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S9xMessage(S9X_ERROR, 0, "Failed to take screenshot.");
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return (FALSE);
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}
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if (setjmp(png_jmpbuf(png_ptr)))
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{
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png_destroy_write_struct(&png_ptr, &info_ptr);
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fclose(fp);
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remove(fname);
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S9xMessage(S9X_ERROR, 0, "Failed to take screenshot.");
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return (FALSE);
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}
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imgwidth = width;
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imgheight = height;
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if (Settings.StretchScreenshots == 1)
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{
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if (width > SNES_WIDTH && height <= SNES_HEIGHT_EXTENDED)
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imgheight = height << 1;
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}
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else
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if (Settings.StretchScreenshots == 2)
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{
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if (width <= SNES_WIDTH)
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imgwidth = width << 1;
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if (height <= SNES_HEIGHT_EXTENDED)
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imgheight = height << 1;
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}
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png_init_io(png_ptr, fp);
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png_set_IHDR(png_ptr, info_ptr, imgwidth, imgheight, 8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
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sig_bit.red = 5;
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sig_bit.green = 5;
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sig_bit.blue = 5;
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png_set_sBIT(png_ptr, info_ptr, &sig_bit);
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png_set_shift(png_ptr, &sig_bit);
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png_write_info(png_ptr, info_ptr);
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png_set_packing(png_ptr);
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png_byte *row_pointer = new png_byte[png_get_rowbytes(png_ptr, info_ptr)];
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uint16 *screen = GFX.Screen;
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for (int y = 0; y < height; y++, screen += GFX.RealPPL)
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{
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png_byte *rowpix = row_pointer;
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for (int x = 0; x < width; x++)
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{
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uint32 r, g, b;
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DECOMPOSE_PIXEL(screen[x], r, g, b);
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*(rowpix++) = r;
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*(rowpix++) = g;
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*(rowpix++) = b;
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if (imgwidth != width)
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{
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*(rowpix++) = r;
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*(rowpix++) = g;
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*(rowpix++) = b;
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}
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}
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png_write_row(png_ptr, row_pointer);
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if (imgheight != height)
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png_write_row(png_ptr, row_pointer);
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}
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delete [] row_pointer;
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png_write_end(png_ptr, info_ptr);
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png_destroy_write_struct(&png_ptr, &info_ptr);
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fclose(fp);
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fprintf(stderr, "%s saved.\n", fname);
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const char *base = S9xBasename(fname);
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sprintf(String, "Saved screenshot %s", base);
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S9xMessage(S9X_INFO, 0, String);
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return (TRUE);
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#else
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fprintf(stderr, "Screenshot support not available (libpng was not found at build time).\n");
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return (FALSE);
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#endif
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}
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