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+/*******************************************************************************
+ Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
+
+ (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and
+ Jerremy Koot (jkoot@snes9x.com)
+
+ (c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net)
+
+ (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net),
+ funkyass (funkyass@spam.shaw.ca),
+ Joel Yliluoma (http://iki.fi/bisqwit/)
+ Kris Bleakley (codeviolation@hotmail.com),
+ Matthew Kendora,
+ Nach (n-a-c-h@users.sourceforge.net),
+ Peter Bortas (peter@bortas.org) and
+ zones (kasumitokoduck@yahoo.com)
+
+ C4 x86 assembler and some C emulation code
+ (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),
+ _Demo_ (_demo_@zsnes.com), and Nach
+
+ C4 C++ code
+ (c) Copyright 2003 Brad Jorsch
+
+ DSP-1 emulator code
+ (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,
+ John Weidman, neviksti (neviksti@hotmail.com),
+ Kris Bleakley, Andreas Naive
+
+ DSP-2 emulator code
+ (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and
+ Lord Nightmare (lord_nightmare@users.sourceforge.net
+
+ OBC1 emulator code
+ (c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and
+ Kris Bleakley
+ Ported from x86 assembler to C by sanmaiwashi
+
+ SPC7110 and RTC C++ emulator code
+ (c) Copyright 2002 Matthew Kendora with research by
+ zsKnight, John Weidman, and Dark Force
+
+ S-DD1 C emulator code
+ (c) Copyright 2003 Brad Jorsch with research by
+ Andreas Naive and John Weidman
+
+ S-RTC C emulator code
+ (c) Copyright 2001 John Weidman
+
+ ST010 C++ emulator code
+ (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora
+
+ Super FX x86 assembler emulator code
+ (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault
+
+ Super FX C emulator code
+ (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman
+
+
+ SH assembler code partly based on x86 assembler code
+ (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
+
+
+ Specific ports contains the works of other authors. See headers in
+ individual files.
+
+ Snes9x homepage: http://www.snes9x.com
+
+ Permission to use, copy, modify and distribute Snes9x in both binary and
+ source form, for non-commercial purposes, is hereby granted without fee,
+ providing that this license information and copyright notice appear with
+ all copies and any derived work.
+
+ This software is provided 'as-is', without any express or implied
+ warranty. In no event shall the authors be held liable for any damages
+ arising from the use of this software.
+
+ Snes9x is freeware for PERSONAL USE only. Commercial users should
+ seek permission of the copyright holders first. Commercial use includes
+ charging money for Snes9x or software derived from Snes9x.
+
+ The copyright holders request that bug fixes and improvements to the code
+ should be forwarded to them so everyone can benefit from the modifications
+ in future versions.
+
+ Super NES and Super Nintendo Entertainment System are trademarks of
+ Nintendo Co., Limited and its subsidiary companies.
+*******************************************************************************/
+
+
+#ifdef HAVE_CONFIG_H
+ #include <config.h>
+#endif
+#include <stdio.h>
+
+#ifndef __WIN32__
+#include <unistd.h>
+#else
+#include <direct.h>
+#endif
+#include <string.h>
+#include <fcntl.h>
+
+#ifdef HAVE_LIBPNG
+#include <png.h>
+#endif
+
+#include "snes9x.h"
+#include "memmap.h"
+#include "display.h"
+#include "gfx.h"
+#include "ppu.h"
+#include "screenshot.h"
+
+bool8 S9xDoScreenshot(int width, int height){
+#ifdef HAVE_LIBPNG
+ FILE *fp;
+ png_structp png_ptr;
+ png_infop info_ptr;
+ png_color_8 sig_bit;
+ png_color pngpal[256];
+ int imgwidth;
+ int imgheight;
+ const char *fname=S9xGetFilenameInc(".png");
+
+ Settings.TakeScreenshot=FALSE;
+
+ if((fp=fopen(fname, "wb"))==NULL){
+ perror("Screenshot failed");
+ return FALSE;
+ }
+
+ png_ptr=png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ if(!png_ptr){
+ fclose(fp);
+ unlink(fname);
+ return FALSE;
+ }
+ info_ptr=png_create_info_struct(png_ptr);
+ if(!info_ptr){
+ png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
+ fclose(fp);
+ unlink(fname);
+ return FALSE;
+ }
+
+ if(setjmp(png_jmpbuf(png_ptr))){
+ perror("Screenshot: setjmp");
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ fclose(fp);
+ unlink(fname);
+ return FALSE;
+ }
+
+ imgwidth=width;
+ imgheight=height;
+ if(Settings.StretchScreenshots==1){
+ if(width<=256 && height>SNES_HEIGHT_EXTENDED) imgwidth=width<<1;
+ if(width>256 && height<=SNES_HEIGHT_EXTENDED) imgheight=height<<1;
+ } else if(Settings.StretchScreenshots==2){
+ if(width<=256) imgwidth=width<<1;
+ if(height<=SNES_HEIGHT_EXTENDED) imgheight=height<<1;
+ }
+
+ png_init_io(png_ptr, fp);
+ if(!Settings.SixteenBit){
+ // BJ: credit sanmaiwashi for the idea to do palettized pngs, and to
+ // S9xSetPalette in x11.cpp for how to calculate the RGB values
+ int b=IPPU.MaxBrightness*140;
+ for(int i=0; i<256; i++){
+ pngpal[i].red = (PPU.CGDATA[i] & 0x1f)*b>>8;
+ pngpal[i].green = ((PPU.CGDATA[i] >> 5) & 0x1f)*b>>8;
+ pngpal[i].blue = ((PPU.CGDATA[i] >> 10) & 0x1f)*b>>8;
+ }
+ png_set_PLTE(png_ptr, info_ptr, pngpal, 256);
+ }
+ png_set_IHDR(png_ptr, info_ptr, imgwidth, imgheight, 8,
+ (Settings.SixteenBit?PNG_COLOR_TYPE_RGB:PNG_COLOR_TYPE_PALETTE),
+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
+ PNG_FILTER_TYPE_DEFAULT);
+
+ if(Settings.SixteenBit){
+ /* 5 bits per color */
+ sig_bit.red=5;
+ sig_bit.green=5;
+ sig_bit.blue=5;
+ png_set_sBIT(png_ptr, info_ptr, &sig_bit);
+ png_set_shift(png_ptr, &sig_bit);
+ }
+
+ png_write_info(png_ptr, info_ptr);
+
+ png_set_packing(png_ptr);
+
+ png_byte *row_pointer=new png_byte [png_get_rowbytes(png_ptr, info_ptr)];
+ uint8 *screen=GFX.Screen;
+ for(int y=0; y<height; y++, screen+=GFX.Pitch){
+ png_byte *rowpix = row_pointer;
+ for(int x=0; x<width; x++){
+ if(Settings.SixteenBit){
+ uint32 r, g, b;
+ DECOMPOSE_PIXEL((*(uint16 *)(screen+2*x)), r, g, b);
+ *(rowpix++) = r;
+ *(rowpix++) = g;
+ *(rowpix++) = b;
+ if(imgwidth!=width){
+ *(rowpix++) = r;
+ *(rowpix++) = g;
+ *(rowpix++) = b;
+ }
+ } else {
+ *(rowpix++)=*(uint8 *)(screen+x);
+ if(imgwidth!=width)
+ *(rowpix++)=*(uint8 *)(screen+x);
+ }
+ }
+ png_write_row(png_ptr, row_pointer);
+ if(imgheight!=height)
+ png_write_row(png_ptr, row_pointer);
+ }
+
+ delete [] row_pointer;
+
+ png_write_end(png_ptr, info_ptr);
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+
+ fclose(fp);
+ fprintf(stderr, "%s saved.\n", fname);
+ return TRUE;
+#else
+ perror("Screenshot support not available (libpng was not found at build time)");
+ return FALSE;
+#endif
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 08:49:28 +0000