/* $Id$ */ /* * This file is part of OpenTTD. * OpenTTD 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, version 2. * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>. */ /** @file splash.cpp Splash screen support for OSX. */ #include "../../stdafx.h" #include "../../openttd.h" #include "../../variables.h" #include "../../debug.h" #include "../../gfx_func.h" #include "../../fileio_func.h" #include "../../blitter/factory.hpp" #include "splash.h" #ifdef WITH_PNG #include <png.h> static void PNGAPI png_my_error(png_structp png_ptr, png_const_charp message) { DEBUG(misc, 0, "[libpng] error: %s - %s", message, (char *)png_get_error_ptr(png_ptr)); longjmp(png_ptr->jmpbuf, 1); } static void PNGAPI png_my_warning(png_structp png_ptr, png_const_charp message) { DEBUG(misc, 1, "[libpng] warning: %s - %s", message, (char *)png_get_error_ptr(png_ptr)); } void DisplaySplashImage() { png_byte header[8]; FILE *f; png_structp png_ptr; png_infop info_ptr, end_info; uint width, height, bit_depth, color_type; png_colorp palette; int num_palette; png_bytep *row_pointers; uint8 *src; uint y; uint xoff, yoff; int i; f = FioFOpenFile(SPLASH_IMAGE_FILE); if (f == NULL) return; fread(header, 1, 8, f); if (png_sig_cmp(header, 0, 8) != 0) { fclose(f); return; } png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, (png_voidp) NULL, png_my_error, png_my_warning); if (png_ptr == NULL) { fclose(f); return; } info_ptr = png_create_info_struct(png_ptr); if (info_ptr == NULL) { png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL); fclose(f); return; } end_info = png_create_info_struct(png_ptr); if (end_info == NULL) { png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL); fclose(f); return; } if (setjmp(png_jmpbuf(png_ptr))) { png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); fclose(f); return; } png_init_io(png_ptr, f); png_set_sig_bytes(png_ptr, 8); png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL); width = png_get_image_width(png_ptr, info_ptr); height = png_get_image_height(png_ptr, info_ptr); bit_depth = png_get_bit_depth(png_ptr, info_ptr); color_type = png_get_color_type(png_ptr, info_ptr); if (color_type != PNG_COLOR_TYPE_PALETTE || bit_depth != 8) { png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); fclose(f); return; } if (!png_get_valid(png_ptr, info_ptr, PNG_INFO_PLTE)) { png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); fclose(f); return; } png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette); row_pointers = png_get_rows(png_ptr, info_ptr); if (width > (uint) _screen.width) width = _screen.width; if (height > (uint) _screen.height) height = _screen.height; xoff = (_screen.width - width) / 2; yoff = (_screen.height - height) / 2; switch (BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth()) { case 8: { uint8 *dst; memset(_screen.dst_ptr, 0xff, _screen.pitch * _screen.height); for (y = 0; y < height; y++) { src = row_pointers[y]; dst = ((uint8 *) _screen.dst_ptr) + (yoff + y) * _screen.pitch + xoff; memcpy(dst, src, width); } for (i = 0; i < num_palette; i++) { _cur_palette[i].a = i == 0 ? 0 : 0xff; _cur_palette[i].r = palette[i].red; _cur_palette[i].g = palette[i].green; _cur_palette[i].b = palette[i].blue; } _cur_palette[0xff].a = 0xff; _cur_palette[0xff].r = 0; _cur_palette[0xff].g = 0; _cur_palette[0xff].b = 0; _pal_first_dirty = 0; _pal_count_dirty = 256; } break; case 32: { uint32 *dst; uint x; memset(_screen.dst_ptr, 0xff000000, _screen.pitch * _screen.height * 4); for (y = 0; y < height; y++) { src = row_pointers[y]; dst = ((uint32 *) _screen.dst_ptr) + (yoff + y) * _screen.pitch + xoff; for (x = 0; x < width; x++) dst[x] = palette[src[x]].blue | (palette[src[x]].green << 8) | (palette[src[x]].red << 16) | 0xff000000; } } break; } png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); fclose(f); return; } #else /* WITH_PNG */ void DisplaySplashImage() {} #endif /* WITH_PNG */