1 /*******************************************************************************
2 Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
4 (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and
5 Jerremy Koot (jkoot@snes9x.com)
7 (c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net)
9 (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net),
10 funkyass (funkyass@spam.shaw.ca),
11 Joel Yliluoma (http://iki.fi/bisqwit/)
12 Kris Bleakley (codeviolation@hotmail.com),
14 Nach (n-a-c-h@users.sourceforge.net),
15 Peter Bortas (peter@bortas.org) and
16 zones (kasumitokoduck@yahoo.com)
18 C4 x86 assembler and some C emulation code
19 (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),
20 _Demo_ (_demo_@zsnes.com), and Nach
23 (c) Copyright 2003 Brad Jorsch
26 (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,
27 John Weidman, neviksti (neviksti@hotmail.com),
28 Kris Bleakley, Andreas Naive
31 (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and
32 Lord Nightmare (lord_nightmare@users.sourceforge.net
35 (c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and
37 Ported from x86 assembler to C by sanmaiwashi
39 SPC7110 and RTC C++ emulator code
40 (c) Copyright 2002 Matthew Kendora with research by
41 zsKnight, John Weidman, and Dark Force
44 (c) Copyright 2003 Brad Jorsch with research by
45 Andreas Naive and John Weidman
48 (c) Copyright 2001 John Weidman
50 ST010 C++ emulator code
51 (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora
53 Super FX x86 assembler emulator code
54 (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault
56 Super FX C emulator code
57 (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman
60 SH assembler code partly based on x86 assembler code
61 (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
64 Specific ports contains the works of other authors. See headers in
67 Snes9x homepage: http://www.snes9x.com
69 Permission to use, copy, modify and distribute Snes9x in both binary and
70 source form, for non-commercial purposes, is hereby granted without fee,
71 providing that this license information and copyright notice appear with
72 all copies and any derived work.
74 This software is provided 'as-is', without any express or implied
75 warranty. In no event shall the authors be held liable for any damages
76 arising from the use of this software.
78 Snes9x is freeware for PERSONAL USE only. Commercial users should
79 seek permission of the copyright holders first. Commercial use includes
80 charging money for Snes9x or software derived from Snes9x.
82 The copyright holders request that bug fixes and improvements to the code
83 should be forwarded to them so everyone can benefit from the modifications
86 Super NES and Super Nintendo Entertainment System are trademarks of
87 Nintendo Co., Limited and its subsidiary companies.
88 *******************************************************************************/
112 #include "screenshot.h"
114 bool8 S9xDoScreenshot(int width, int height){
120 png_color pngpal[256];
123 const char *fname=S9xGetFilenameInc(".png");
125 Settings.TakeScreenshot=FALSE;
127 if((fp=fopen(fname, "wb"))==NULL){
128 perror("Screenshot failed");
132 png_ptr=png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
138 info_ptr=png_create_info_struct(png_ptr);
140 png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
146 if(setjmp(png_jmpbuf(png_ptr))){
147 perror("Screenshot: setjmp");
148 png_destroy_write_struct(&png_ptr, &info_ptr);
156 if(Settings.StretchScreenshots==1){
157 if(width<=256 && height>SNES_HEIGHT_EXTENDED) imgwidth=width<<1;
158 if(width>256 && height<=SNES_HEIGHT_EXTENDED) imgheight=height<<1;
159 } else if(Settings.StretchScreenshots==2){
160 if(width<=256) imgwidth=width<<1;
161 if(height<=SNES_HEIGHT_EXTENDED) imgheight=height<<1;
164 png_init_io(png_ptr, fp);
165 png_set_IHDR(png_ptr, info_ptr, imgwidth, imgheight, 8,
166 PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
167 PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
169 /* 5 bits per color */
173 png_set_sBIT(png_ptr, info_ptr, &sig_bit);
174 png_set_shift(png_ptr, &sig_bit);
176 png_write_info(png_ptr, info_ptr);
178 png_set_packing(png_ptr);
180 png_byte *row_pointer=new png_byte [png_get_rowbytes(png_ptr, info_ptr)];
181 uint8 *screen=GFX.Screen;
182 for(int y=0; y<height; y++, screen+=GFX.Pitch){
183 png_byte *rowpix = row_pointer;
184 for(int x=0; x<width; x++){
186 DECOMPOSE_PIXEL((*(uint16 *)(screen+2*x)), r, g, b);
190 if (imgwidth!=width) {
196 png_write_row(png_ptr, row_pointer);
197 if(imgheight!=height)
198 png_write_row(png_ptr, row_pointer);
201 delete [] row_pointer;
203 png_write_end(png_ptr, info_ptr);
204 png_destroy_write_struct(&png_ptr, &info_ptr);
207 fprintf(stderr, "%s saved.\n", fname);
210 perror("Screenshot support not available (libpng was not found at build time)");