Mercurial > fife-parpg
view utils/frminfo/png_write.cpp @ 59:129d3dafd3a5
fix initialization of opengl, SDL_GL_DOUBLEBUFFER was accidently used as flag for SDL_SetVideoMode, instead it has to be used with SDL_GL_SetAttribute, thanks to austin_, who reported that.
author | spq@33b003aa-7bff-0310-803a-e67f0ece8222 |
---|---|
date | Tue, 15 Jul 2008 15:34:47 +0000 |
parents | 90005975cdbb |
children |
line wrap: on
line source
/*************************************************************************** * Copyright (C) 2005-2008 by the FIFE team * * http://www.fifengine.de * * This file is part of FIFE. * * * * FIFE is free software; you can redistribute it and/or * * modify it under the terms of the GNU Lesser General Public * * License as published by the Free Software Foundation; either * * version 2.1 of the License, or (at your option) any later version. * * * * This library 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 * * Lesser General Public License for more details. * * * * You should have received a copy of the GNU Lesser General Public * * License along with this library; if not, write to the * * Free Software Foundation, Inc., * * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * ***************************************************************************/ // Standard C++ library includes #include <cstdio> // 3rd party library includes #include <png.h> #include <SDL.h> // FIFE includes int write_png(const char *filename, SDL_Surface& surface) { FILE *file = fopen(filename, "wb"); if (!file) return -1; png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); if (!png_ptr) return -1; png_infop info_ptr = png_create_info_struct(png_ptr); if (!info_ptr) { png_destroy_write_struct(&png_ptr, NULL); fclose(file); return -1; } if (setjmp(png_jmpbuf(png_ptr))) { png_destroy_write_struct(&png_ptr, &info_ptr); fclose(file); return -1; } png_init_io(png_ptr, file); png_set_IHDR(png_ptr, info_ptr, surface.w, surface.h, 8, PNG_COLOR_TYPE_RGB_ALPHA , PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); /* does this leak memory? */ png_byte** row_pointers = (png_byte**)png_malloc(png_ptr, surface.h * sizeof(png_bytep)); png_byte* p = (png_byte*)surface.pixels; for (int i = 0; i < surface.h; ++i) { row_pointers[i] = p; p += surface.pitch; } png_set_rows(png_ptr, info_ptr, row_pointers); png_write_png(png_ptr, info_ptr, 0, NULL); return 0; }