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Diffstat (limited to 'saga/ys_binread.cpp')
| -rw-r--r-- | saga/ys_binread.cpp | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/saga/ys_binread.cpp b/saga/ys_binread.cpp deleted file mode 100644 index 4eba5acb2c..0000000000 --- a/saga/ys_binread.cpp +++ /dev/null @@ -1,185 +0,0 @@ -/* ScummVM - Scumm Interpreter - * Copyright (C) 2004 The ScummVM project - * - * The ReInherit Engine is (C)2000-2003 by Daniel Balsom. - * - * This program 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; either version 2 - * of the License, or (at your option) any later version. - - * This program 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 this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - * $Header$ - * - */ - -#include "saga.h" -#include "yslib.h" - -namespace Saga { - -void ys_read_4cc(char *fourcc, const unsigned char *data_p, const unsigned char **data_pp) { - fourcc[0] = (char)data_p[0]; - fourcc[1] = (char)data_p[1]; - fourcc[2] = (char)data_p[2]; - fourcc[3] = (char)data_p[3]; - - if (data_pp) { - *data_pp = data_p + 4; - } - - return; -} - -// Reads an unsigned 8 bit integer in from the array of bytes pointed to by -// 'data_p'. If 'data_pp' is not null, it will set '*data_pp' to point past -// the integer read. -unsigned int ys_read_u8(const unsigned char *data_p, const unsigned char **data_pp) { - unsigned int u8 = *data_p; - - if (data_pp != NULL) { - *data_pp = data_p + 1; - } - - return u8; -} - -// Reads a signed 8 bit integer in two's complement notation from the array -// of bytes pointed to by 'data_p'. If 'data_pp' is not null, it will set -//'*data_pp' to point past the integer read. -int ys_read_s8(const unsigned char *data_p, const unsigned char **data_pp) { - unsigned int u8 = *data_p; - int s8; - -#ifndef YS_ASSUME_2S_COMP - if (u8 & 0x80U) { - s8 = (int)(u8 - 0x80U) - 0x7F - 1; - } else -#endif - s8 = u8; - - if (data_pp != NULL) { - *data_pp = data_p + 1; - } - - return s8; -} - -// Reads a signed 8 bit integer in two's complement notation from the array -// of bytes pointed to by 'data_p'. If 'data_pp' is not null, it will set -// '*data_pp' to point past the integer read. -unsigned int ys_read_u16_be(const unsigned char *data_p, const unsigned char **data_pp) { - unsigned int u16_be = ((unsigned int)data_p[0] << 8) | data_p[1]; - - if (data_pp != NULL) { - *data_pp = data_p + 2; - } - - return u16_be; -} - -// Reads an unsigned 16 bit integer in little-endian format from the array of -// bytes pointed to by 'data_p'. If 'data_pp' is not null, it will set -// '*data_pp' to point past the integer read. -unsigned int ys_read_u16_le(const unsigned char *data_p, const unsigned char **data_pp) { - unsigned int u16_le = ((unsigned int)data_p[1] << 8) | data_p[0]; - - if (data_pp != NULL) { - *data_pp = data_p + 2; - } - - return u16_le; -} - -// Reads a signed 16 bit integer in big-endian, 2's complement format from -// the array of bytes pointed to by 'data_p'. -// If 'data_pp' is not null, it will set '*data_pp' to point past the integer read. -int ys_read_s16_be(const unsigned char *data_p, const unsigned char **data_pp) { - unsigned int u16_be = ((unsigned int)data_p[0] << 8) | data_p[1]; - int s16_be; - -#ifndef YS_ASSUME_2S_COMP - if (u16_be & 0x8000U) { - s16_be = (int)(u16_be - 0x8000U) - 0x7FFF - 1; - } else -#endif - s16_be = u16_be; - - if (data_pp != NULL) { - *data_pp = data_p + 2; - } - - return s16_be; -} - -// Reads a signed 16 bit integer in little-endian, 2's complement format from -// the array of bytes pointed to by 'data_p'. -// If 'data_pp' is not null, it will set '*data_pp' to point past the integer read. -int ys_read_s16_le(const unsigned char *data_p, const unsigned char **data_pp) { - unsigned int u16_le = ((unsigned int)data_p[1] << 8) | data_p[0]; - int s16_le; - -#ifndef YS_ASSUME_2S_COMP - if (u16_le & 0x8000U) { - s16_le = (int)(u16_le - 0x8000U) - 0x7FFF - 1; - } else -#endif - s16_le = u16_le; - - if (data_pp != NULL) { - *data_pp = data_p + 2; - } - - return s16_le; -} - -// Reads an unsigned 24 bit integer in big-endian format from the array of -// bytes pointed to by 'data_p'. If 'data_pp' is not null, it will set -// '*data_pp' to point past the integer read. -unsigned long ys_read_u24_le(const unsigned char *data_p, const unsigned char **data_pp) { - unsigned long u24_le = ((unsigned long)data_p[3] << 16) | ((unsigned long)data_p[2] << 8) | data_p[0]; - - if (data_pp != NULL) { - *data_pp = data_p + 3; - } - - return u24_le; -} - -// Reads an unsigned 32 bit integer in big-endian format from the array of -// bytes pointed to by 'data_p'. If 'data_pp' is not null, it will set -// '*data_pp' to point past the integer read. -unsigned long ys_read_u32_be(const unsigned char *data_p, const unsigned char **data_pp) { - unsigned long u32_be = ((unsigned long)data_p[0] << 24) | ((unsigned long)data_p[1] << 16) | - ((unsigned long)data_p[2] << 8) | data_p[3]; - - if (data_pp != NULL) { - *data_pp = data_p + 4; - } - - return u32_be; -} - -// Reads an unsigned 32 bit integer in little-endian format from the array of -// bytes pointed to by 'data_p'. If 'data_pp' is not null, it will set -// '*data_pp' to point past the integer read. -unsigned long ys_read_u32_le(const unsigned char *data_p, const unsigned char **data_pp) { - unsigned long u32_le = ((unsigned long)data_p[3] << 24) | ((unsigned long)data_p[2] << 16) | - ((unsigned long)data_p[1] << 8) | data_p[0]; - - if (data_pp != NULL) { - *data_pp = data_p + 4; - } - - return u32_le; -} - -} // End of namespace Saga |