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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 2024-11-03 18:24:24 +0000