1 files changed, 0 insertions, 222 deletions
diff --git a/src/spriteloader/png.cpp b/src/spriteloader/png.cpp
deleted file mode 100644
index 0c65ffc6f..000000000
--- a/src/spriteloader/png.cpp
+++ /dev/null
@@ -1,222 +0,0 @@
-/* $Id$ */
-
-/*
- * 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 png.cpp Reading sprites from png files. */
-
-#ifdef WITH_PNG
-
-#include "../stdafx.h"
-#include "../fileio_func.h"
-#include "../debug.h"
-#include "png.hpp"
-#include <png.h>
-
-#define PNG_SLOT 62
-
-static void PNGAPI png_my_read(png_structp png_ptr, png_bytep data, png_size_t length)
-{
-	FioReadBlock(data, length);
-}
-
-static void PNGAPI png_my_error(png_structp png_ptr, png_const_charp message)
-{
-	DEBUG(sprite, 0, "ERROR (libpng): %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(sprite, 0, "WARNING (libpng): %s - %s", message, (char *)png_get_error_ptr(png_ptr));
-}
-
-static bool OpenPNGFile(const char *filename, uint32 id, bool mask)
-{
-	char png_file[MAX_PATH];
-
-	/* Add path separator after 'sprites' if not present */
-	const char *sep = (filename[0] == PATHSEPCHAR) ? "" : PATHSEP;
-	snprintf(png_file, sizeof(png_file), "sprites%s%s" PATHSEP "%d%s.png", sep, filename, id, mask ? "m" : "");
-	if (FioCheckFileExists(png_file, NEWGRF_DIR)) {
-		FioOpenFile(PNG_SLOT, png_file, NEWGRF_DIR);
-		return true;
-	}
-
-	/* TODO -- Add TAR support */
-	return false;
-}
-
-static bool LoadPNG(SpriteLoader::Sprite *sprite, const char *filename, uint32 id, volatile bool mask, ZoomLevel zoom)
-{
-	png_byte header[8];
-	png_structp png_ptr;
-	png_infop info_ptr, end_info;
-	uint bit_depth, colour_type;
-	uint i, pixelsize;
-	SpriteLoader::CommonPixel *dst;
-
-	if (!OpenPNGFile(filename, id, mask)) return mask; // If mask is true, and file not found, continue true anyway, as it isn't a show-stopper
-
-	/* Check the header */
-	FioReadBlock(header, 8);
-	if (png_sig_cmp(header, 0, 8) != 0) return false;
-
-	/* Create the reader */
-	png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL, png_my_error, png_my_warning);
-	if (png_ptr == NULL) return false;
-
-	/* Create initial stuff */
-	info_ptr = png_create_info_struct(png_ptr);
-	if (info_ptr == NULL) {
-		png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
-		return false;
-	}
-	end_info = png_create_info_struct(png_ptr);
-	if (end_info == NULL) {
-		png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
-		return false;
-	}
-
-	/* Make sure that upon error, we can clean up graceful */
-	if (setjmp(png_jmpbuf(png_ptr))) {
-		png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
-		return false;
-	}
-
-	/* Read the file */
-	png_set_read_fn(png_ptr, NULL, png_my_read);
-	png_set_sig_bytes(png_ptr, 8);
-
-	png_read_info(png_ptr, info_ptr);
-
-	if (!mask) {
-		/* Read the text chunks */
-		png_textp text_ptr;
-		int num_text = 0;
-		png_get_text(png_ptr, info_ptr, &text_ptr, &num_text);
-		if (num_text == 0) DEBUG(misc, 0, "Warning: PNG Sprite '%s/%d.png' doesn't have x_offs and y_offs; expect graphical problems", filename, id);
-		for (int i = 0; i < num_text; i++) {
-			/* x_offs and y_offs are in the text-chunk of PNG */
-			if (strcmp("x_offs", text_ptr[i].key) == 0) sprite->x_offs = strtol(text_ptr[i].text, NULL, 0);
-			if (strcmp("y_offs", text_ptr[i].key) == 0) sprite->y_offs = strtol(text_ptr[i].text, NULL, 0);
-		}
-
-		uint height = png_get_image_height(png_ptr, info_ptr);
-		uint width  = png_get_image_width(png_ptr, info_ptr);
-		/* Check if sprite dimensions aren't larger than what is allowed in GRF-files. */
-		if (height > UINT8_MAX || width > UINT16_MAX) {
-			png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
-			return false;
-		}
-		sprite->height = height;
-		sprite->width  = width;
-		sprite->AllocateData(zoom, sprite->width * sprite->height);
-	} else if (sprite->height != png_get_image_height(png_ptr, info_ptr) || sprite->width != png_get_image_width(png_ptr, info_ptr)) {
-		/* Make sure the mask image isn't larger than the sprite image. */
-		DEBUG(misc, 0, "Ignoring mask for SpriteID %d as it isn't the same dimension as the masked sprite", id);
-		png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
-		return true;
-	}
-
-	bit_depth  = png_get_bit_depth(png_ptr, info_ptr);
-	colour_type = png_get_color_type(png_ptr, info_ptr);
-
-	if (mask && (bit_depth != 8 || colour_type != PNG_COLOR_TYPE_PALETTE)) {
-		DEBUG(misc, 0, "Ignoring mask for SpriteID %d as it isn't a 8 bit palette image", id);
-		png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
-		return true;
-	}
-
-	bool win_palette = false;
-	if (!mask) {
-		if (bit_depth == 16) png_set_strip_16(png_ptr);
-
-		if (colour_type == PNG_COLOR_TYPE_PALETTE) {
-			png_set_palette_to_rgb(png_ptr);
-			colour_type = PNG_COLOR_TYPE_RGB;
-		}
-		if (colour_type == PNG_COLOR_TYPE_GRAY || colour_type == PNG_COLOR_TYPE_GRAY_ALPHA) {
-			png_set_gray_to_rgb(png_ptr);
-			colour_type = PNG_COLOR_TYPE_RGB;
-		}
-
-		if (colour_type == PNG_COLOR_TYPE_RGB) {
-			if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
-				/* Create an alpha channel when there is a tRNS chunk */
-				png_set_tRNS_to_alpha(png_ptr);
-			} else {
-				png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER);
-			}
-		}
-
-		pixelsize = sizeof(uint32);
-	} else {
-		pixelsize = sizeof(uint8);
-
-		/* Check whether the DOS greyscale is in place. If not, we assume WIN palette */
-		png_colorp palette;
-		int num_palette;
-		if (png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette) && num_palette == 256) {
-			for (uint i = 3; i <= 5; i++) {
-				/* Allow differences between -4 and +4 */
-				uint8 intensity = i * 16 - 4;
-				uint8 diff_r = palette[i].red - intensity;
-				uint8 diff_g = palette[i].green - intensity;
-				uint8 diff_b = palette[i].blue - intensity;
-				if (diff_r > 8 || diff_g > 8 || diff_b > 8) {
-					win_palette = true;
-					break;
-				}
-			}
-		}
-	}
-
-	png_bytep row_pointer = AllocaM(png_byte, png_get_image_width(png_ptr, info_ptr) * pixelsize);
-
-	for (i = 0; i < png_get_image_height(png_ptr, info_ptr); i++) {
-		png_read_row(png_ptr, row_pointer, NULL);
-
-		dst = sprite->data + i * png_get_image_width(png_ptr, info_ptr);
-
-		for (uint x = 0; x < png_get_image_width(png_ptr, info_ptr); x++) {
-			if (mask) {
-				if (row_pointer[x * sizeof(uint8)] != 0) {
-					/* Alpha channel is used from the original image (to allow transparency in remap colours) */
-					extern const byte _palmap_w2d[];
-					byte colour = row_pointer[x * sizeof(uint8)];
-					dst[x].m = win_palette ? _palmap_w2d[colour] : colour;
-				}
-			} else {
-				dst[x].r = row_pointer[x * sizeof(uint32) + 0];
-				dst[x].g = row_pointer[x * sizeof(uint32) + 1];
-				dst[x].b = row_pointer[x * sizeof(uint32) + 2];
-				dst[x].a = row_pointer[x * sizeof(uint32) + 3];
-				dst[x].m = 0;
-			}
-		}
-	}
-
-	png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
-
-	return true;
-}
-
-uint8 SpriteLoaderPNG::LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type, bool load_32bpp)
-{
-	if (!load_32bpp) return 0;
-
-	ZoomLevel zoom_lvl = (sprite_type == ST_NORMAL) ? ZOOM_LVL_OUT_4X : ZOOM_LVL_NORMAL;
-
-	const char *filename = FioGetFilename(file_slot);
-	if (!LoadPNG(&sprite[zoom_lvl], filename, (uint32)file_pos, false, zoom_lvl)) return 0;
-	if (!LoadPNG(&sprite[zoom_lvl], filename, (uint32)file_pos, true, zoom_lvl)) return 0;
-
-	return 1 << zoom_lvl;
-}
-
-#endif /* WITH_PNG */