mirror of
https://github.com/OpenRCT2/OpenRCT2
synced 2026-01-25 15:54:31 +01:00
66de066901
Encountered bug where incorrect tracks would be displayed if the loading process failed. Added checksum validation to loading code. Increased the max rle length to match rct2.
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/*****************************************************************************
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* Copyright (c) 2014 Ted John
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* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
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*
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* This file is part of OpenRCT2.
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*
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* OpenRCT2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*****************************************************************************/
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#ifndef _SAWYERCODING_H_
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#define _SAWYERCODING_H_
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#include "../common.h"
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typedef struct {
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uint8 encoding;
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uint32 length;
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} sawyercoding_chunk_header;
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enum {
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CHUNK_ENCODING_NONE,
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CHUNK_ENCODING_RLE,
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CHUNK_ENCODING_RLECOMPRESSED,
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CHUNK_ENCODING_ROTATE
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};
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enum {
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FILE_VERSION_MASK = (3 << 0),
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FILE_VERSION_RCT1 = (0 << 0),
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FILE_VERSION_RCT1_AA = (1 << 0),
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FILE_VERSION_RCT1_LL = (2 << 0),
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FILE_TYPE_MASK = (3 << 2),
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FILE_TYPE_TD4 = (0 << 2),
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FILE_TYPE_SV4 = (1 << 2),
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FILE_TYPE_SC4 = (2 << 2)
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};
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int sawyercoding_validate_checksum(FILE *file);
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uint32 sawyercoding_calculate_checksum(uint8* buffer, uint32 length);
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int sawyercoding_read_chunk(FILE *file, uint8 *buffer);
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int sawyercoding_write_chunk_buffer(uint8 *dst_file, uint8* buffer, sawyercoding_chunk_header chunkHeader);
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int sawyercoding_decode_sv4(char *src, char *dst, int length);
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int sawyercoding_decode_sc4(char *src, char *dst, int length);
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int sawyercoding_encode_sv4(char *src, char *dst, int length);
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int sawyercoding_decode_td6(char *src, char *dst, int length);
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int sawyercoding_encode_td6(char* src, char* dst, int length);
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int sawyercoding_validate_track_checksum(char* src, int length);
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int sawyercoding_detect_file_type(char *src, int length);
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#endif
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