mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-01 16:35:16 +01:00
146 lines
3.2 KiB
C++
146 lines
3.2 KiB
C++
/*****************************************************************************\
|
|
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
|
|
This file is licensed under the Snes9x License.
|
|
For further information, consult the LICENSE file in the root directory.
|
|
\*****************************************************************************/
|
|
|
|
|
|
#ifdef HAVE_LIBPNG
|
|
#include <png.h>
|
|
#endif
|
|
#include "snes9x.h"
|
|
#include "memmap.h"
|
|
#include "display.h"
|
|
#include "screenshot.h"
|
|
|
|
|
|
bool8 S9xDoScreenshot (int width, int height)
|
|
{
|
|
Settings.TakeScreenshot = FALSE;
|
|
|
|
#ifdef HAVE_LIBPNG
|
|
FILE *fp;
|
|
png_structp png_ptr;
|
|
png_infop info_ptr;
|
|
png_color_8 sig_bit;
|
|
int imgwidth, imgheight;
|
|
const char *fname;
|
|
|
|
fname = S9xGetFilenameInc(".png", SCREENSHOT_DIR);
|
|
|
|
fp = fopen(fname, "wb");
|
|
if (!fp)
|
|
{
|
|
S9xMessage(S9X_ERROR, 0, "Failed to take screenshot.");
|
|
return (FALSE);
|
|
}
|
|
|
|
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
|
|
if (!png_ptr)
|
|
{
|
|
fclose(fp);
|
|
remove(fname);
|
|
S9xMessage(S9X_ERROR, 0, "Failed to take screenshot.");
|
|
return (FALSE);
|
|
}
|
|
|
|
info_ptr = png_create_info_struct(png_ptr);
|
|
if (!info_ptr)
|
|
{
|
|
png_destroy_write_struct(&png_ptr, (png_infopp) NULL);
|
|
fclose(fp);
|
|
remove(fname);
|
|
S9xMessage(S9X_ERROR, 0, "Failed to take screenshot.");
|
|
return (FALSE);
|
|
}
|
|
|
|
if (setjmp(png_jmpbuf(png_ptr)))
|
|
{
|
|
png_destroy_write_struct(&png_ptr, &info_ptr);
|
|
fclose(fp);
|
|
remove(fname);
|
|
S9xMessage(S9X_ERROR, 0, "Failed to take screenshot.");
|
|
return (FALSE);
|
|
}
|
|
|
|
imgwidth = width;
|
|
imgheight = height;
|
|
|
|
if (Settings.StretchScreenshots == 1)
|
|
{
|
|
if (width > SNES_WIDTH && height <= SNES_HEIGHT_EXTENDED)
|
|
imgheight = height << 1;
|
|
}
|
|
else
|
|
if (Settings.StretchScreenshots == 2)
|
|
{
|
|
if (width <= SNES_WIDTH)
|
|
imgwidth = width << 1;
|
|
if (height <= SNES_HEIGHT_EXTENDED)
|
|
imgheight = height << 1;
|
|
}
|
|
|
|
png_init_io(png_ptr, fp);
|
|
|
|
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);
|
|
|
|
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)];
|
|
uint16 *screen = GFX.Screen;
|
|
|
|
for (int y = 0; y < height; y++, screen += GFX.RealPPL)
|
|
{
|
|
png_byte *rowpix = row_pointer;
|
|
|
|
for (int x = 0; x < width; x++)
|
|
{
|
|
uint32 r, g, b;
|
|
|
|
DECOMPOSE_PIXEL(screen[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);
|
|
|
|
const char *base = S9xBasename(fname);
|
|
sprintf(String, "Saved screenshot %s", base);
|
|
S9xMessage(S9X_INFO, 0, String);
|
|
|
|
return (TRUE);
|
|
#else
|
|
fprintf(stderr, "Screenshot support not available (libpng was not found at build time).\n");
|
|
return (FALSE);
|
|
#endif
|
|
}
|