Files @ r17613:a9b2554a5d79
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Location: cpp/openttd-patchpack/source/src/os/macosx/splash.cpp

rubidium
(svn r22387) -Fix-ish [FS#4601]: Windows' recv seems to return "graceful closed" before having passed the remaining buffer which causes OpenTTD to think all connections are "incorrectly" terminated, i.e. without the "I'm leaving" packet from the client. So let the client wait a tiny bit after sending the "I'm leaving" packet and before gracefully closing the connection
/* $Id$ */

/*
 * 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 "../../debug.h"
#include "../../gfx_func.h"
#include "../../fileio_func.h"
#include "../../blitter/factory.hpp"
#include "../../core/mem_func.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_jmpbuf(png_ptr), 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()
{
	FILE *f = FioFOpenFile(SPLASH_IMAGE_FILE);
	if (f == NULL) return;

	png_byte header[8];
	fread(header, sizeof(png_byte), 8, f);
	if (png_sig_cmp(header, 0, 8) != 0) {
		fclose(f);
		return;
	}

	png_structp 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;
	}

	png_infop 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;
	}

	png_infop 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);

	uint width      = png_get_image_width(png_ptr, info_ptr);
	uint height     = png_get_image_height(png_ptr, info_ptr);
	uint bit_depth  = png_get_bit_depth(png_ptr, info_ptr);
	uint 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_colorp palette;
	int num_palette;
	png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette);

	png_bytep *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;

	uint xoff = (_screen.width - width) / 2;
	uint yoff = (_screen.height - height) / 2;

	switch (BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth()) {
		case 8: {
				uint8 *dst_ptr = (uint8 *)_screen.dst_ptr;
				/* Initialize buffer */
				MemSetT(dst_ptr, 0xff, _screen.pitch * _screen.height);

				for (uint y = 0; y < height; y++) {
					uint8 *src = row_pointers[y];
					uint8 *dst = dst_ptr + (yoff + y) * _screen.pitch + xoff;

					memcpy(dst, src, width);
				}

				for (int 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_ptr = (uint32 *)_screen.dst_ptr;
				/* Initialize buffer */
				MemSetT(dst_ptr, 0, _screen.pitch * _screen.height);

				for (uint y = 0; y < height; y++) {
					uint8 *src = row_pointers[y];
					uint32 *dst = dst_ptr + (yoff + y) * _screen.pitch + xoff;

					for (uint 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 */