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-rw-r--r--source/screenshot.c277
1 files changed, 147 insertions, 130 deletions
diff --git a/source/screenshot.c b/source/screenshot.c
index f33b240..fc3cccb 100644
--- a/source/screenshot.c
+++ b/source/screenshot.c
@@ -1,6 +1,6 @@
/*******************************************************************************
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
-
+
(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and
Jerremy Koot (jkoot@snes9x.com)
@@ -43,53 +43,53 @@
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 x86 assembler emulator code
+ (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault
- Super FX C emulator code
+ 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)
+ (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>
+#include <config.h>
#endif
#include <stdio.h>
@@ -112,124 +112,141 @@
#include "ppu.h"
#include "screenshot.h"
-bool8 S9xDoScreenshot(int width, int height){
+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);
+ 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;
}
- }
- 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
+ {
+ *(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;
+ perror("Screenshot support not available (libpng was not found at build time)");
+ return FALSE;
#endif
}
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