diff options
Diffstat (limited to 'tools/dyecmd/src/imagewriter.cpp')
-rw-r--r-- | tools/dyecmd/src/imagewriter.cpp | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/tools/dyecmd/src/imagewriter.cpp b/tools/dyecmd/src/imagewriter.cpp new file mode 100644 index 00000000..36c139b9 --- /dev/null +++ b/tools/dyecmd/src/imagewriter.cpp @@ -0,0 +1,115 @@ +/* + * The Mana World + * Copyright 2004 The Mana World Development Team + * + * This file is part of The Mana World. + * + * The Mana World is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * any later version. + * + * The Mana World is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with The Mana World; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * $Id$ + */ + +#include "imagewriter.h" + +#include <png.h> +#include <string> +#include <SDL/SDL.h> + +bool ImageWriter::writePNG(SDL_Surface *surface, + const std::string &filename) +{ + // TODO Maybe someone can make this look nice? + FILE *fp = fopen(filename.c_str(), "wb"); + if (!fp) + { + // todo + // logger->log("could not open file %s for writing", filename.c_str()); + return false; + } + + png_structp png_ptr; + png_infop info_ptr; + png_bytep *row_pointers; + int colortype; + + if (SDL_MUSTLOCK(surface)) { + SDL_LockSurface(surface); + } + + png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0); + if (!png_ptr) + { + // todo + // logger->log("Had trouble creating png_structp"); + return false; + } + + info_ptr = png_create_info_struct(png_ptr); + if (!info_ptr) + { + png_destroy_write_struct(&png_ptr, (png_infopp)NULL); + // todo + // logger->log("Could not create png_info"); + return false; + } + + if (setjmp(png_jmpbuf(png_ptr))) + { + png_destroy_write_struct(&png_ptr, (png_infopp)NULL); + // todo + // logger->log("problem writing to %s", filename.c_str()); + return false; + } + + png_init_io(png_ptr, fp); + + colortype = (surface->format->BitsPerPixel == 24) ? + PNG_COLOR_TYPE_RGB : PNG_COLOR_TYPE_RGB_ALPHA; + + png_set_IHDR(png_ptr, info_ptr, surface->w, surface->h, 8, colortype, + PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); + + png_write_info(png_ptr, info_ptr); + + png_set_packing(png_ptr); + + row_pointers = new png_bytep[surface->h]; + if (!row_pointers) + { + // todo + // logger->log("Had trouble converting surface to row pointers"); + return false; + } + + for (int i = 0; i < surface->h; i++) + { + row_pointers[i] = (png_bytep)(Uint8 *)surface->pixels + i * surface->pitch; + } + + png_write_image(png_ptr, row_pointers); + png_write_end(png_ptr, info_ptr); + + fclose(fp); + + delete [] row_pointers; + + png_destroy_write_struct(&png_ptr, (png_infopp)NULL); + + if (SDL_MUSTLOCK(surface)) { + SDL_UnlockSurface(surface); + } + + return true; +} |