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Diffstat (limited to 'saga/ys_binwrite.cpp')
| -rw-r--r-- | saga/ys_binwrite.cpp | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/saga/ys_binwrite.cpp b/saga/ys_binwrite.cpp new file mode 100644 index 0000000000..ae10e364a2 --- /dev/null +++ b/saga/ys_binwrite.cpp @@ -0,0 +1,296 @@ +/* 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 <stddef.h> + +namespace Saga { +void +ys_write_u8(unsigned int u8, unsigned char *data_p, unsigned char **data_pp) +{ + *data_p = (unsigned char)(u8 & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 1; + } + + return; +} + +void +ys_write_u16_be(unsigned int u16_be, + unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an unsigned 16 bit integer in big-endian format to the buffer + * pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + data_p[0] = (unsigned char)((u16_be >> 8) & 0xFFU); + data_p[1] = (unsigned char)(u16_be & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 2; + } + + return; +} + +void +ys_write_u16_le(unsigned int u16_le, + unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an unsigned 16 bit integer in little-endian format to the buffer + * pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + data_p[0] = (unsigned char)(u16_le & 0xFFU); + data_p[1] = (unsigned char)((u16_le >> 8) & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 2; + } + + return; +} + +void +ys_write_s16_be(int s16_be, unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an signed 16 bit integer in big-endian format and two's + * complement representation to the buffer pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + unsigned int u16_be = s16_be; + + data_p[0] = (unsigned char)((u16_be >> 8) & 0xFFU); + data_p[1] = (unsigned char)(u16_be & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 2; + } + + return; +} + +void +ys_write_s16_le(int s16_le, unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an signed 16 bit integer in little-endian format and two's + * complement representation to the buffer pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + unsigned int u16_le = s16_le; + + data_p[0] = (unsigned char)(u16_le & 0xFFU); + data_p[1] = (unsigned char)((u16_le >> 8) & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 2; + } + + return; +} + +void +ys_write_u24_be(unsigned long u24_be, + unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an unsigned 24 bit integer in big-endian format to the buffer + * pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + data_p[0] = (unsigned char)((u24_be >> 16) & 0xFFU); + data_p[1] = (unsigned char)((u24_be >> 8) & 0xFFU); + data_p[2] = (unsigned char)(u24_be & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 3; + } + + return; +} + +void +ys_write_u24_le(unsigned long u24_le, + unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an unsigned 24 bit integer in little-endian format to the buffer + * pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + data_p[0] = (unsigned char)(u24_le & 0xFFU); + data_p[1] = (unsigned char)((u24_le >> 8) & 0xFFU); + data_p[2] = (unsigned char)((u24_le >> 16) & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 3; + } + + return; +} + +void +ys_write_s24_be(long s24_be, unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an signed 24 bit integer in big-endian format and two's + * complement representation to the buffer pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + unsigned long u24_be = s24_be; + + data_p[0] = (unsigned char)((u24_be >> 16) & 0xFFU); + data_p[1] = (unsigned char)((u24_be >> 8) & 0xFFU); + data_p[2] = (unsigned char)(u24_be & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 3; + } + + return; +} + +void +ys_write_s24_le(long s24_le, unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an signed 24 bit integer in little-endian format and two's + * complement representation to the buffer pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + unsigned long u24_le = s24_le; + + data_p[0] = (unsigned char)(u24_le & 0xFFU); + data_p[1] = (unsigned char)((u24_le >> 8) & 0xFFU); + data_p[2] = (unsigned char)((u24_le >> 16) & 0xFFU); + + if (data_pp != NULL) { + *data_pp = (unsigned char *)(data_p + 3); + } + + return; +} + +void +ys_write_u32_be(unsigned long u32_be, + unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an unsigned 32 bit integer in big-endian format to the buffer + * pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + data_p[0] = (unsigned char)((u32_be >> 24) & 0xFFU); + data_p[1] = (unsigned char)((u32_be >> 16) & 0xFFU); + data_p[2] = (unsigned char)((u32_be >> 8) & 0xFFU); + data_p[3] = (unsigned char)(u32_be & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 4; + } + + return; +} + +void +ys_write_u32_le(unsigned long u32_le, + unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an unsigned 32 bit integer in little-endian format to the buffer + * pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + data_p[0] = (unsigned char)(u32_le & 0xFFU); + data_p[1] = (unsigned char)((u32_le >> 8) & 0xFFU); + data_p[2] = (unsigned char)((u32_le >> 16) & 0xFFU); + data_p[3] = (unsigned char)((u32_le >> 24) & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 4; + } + + return; +} + +void +ys_write_s32_be(long s32_be, unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an signed 32 bit integer in big-endian format and two's + * complement representation to the buffer pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + unsigned long u32_be = s32_be; + + data_p[0] = (unsigned char)((u32_be >> 24) & 0xFFU); + data_p[1] = (unsigned char)((u32_be >> 16) & 0xFFU); + data_p[2] = (unsigned char)((u32_be >> 8) & 0xFFU); + data_p[3] = (unsigned char)(u32_be & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 4; + } + + return; +} + +void +ys_write_s32_le(long s32_le, unsigned char *data_p, unsigned char **data_pp) +/*---------------------------------------------------------------------------*\ + * Writes an signed 32 bit integer in little-endian format and two's + * complement representation to the buffer pointed to by 'data_p'. + * If 'data_pp' is not null, the function will set it to point just beyond + * the integer written. +\*---------------------------------------------------------------------------*/ +{ + unsigned long u32_le = s32_le; + + data_p[0] = (unsigned char)(u32_le & 0xFFU); + data_p[1] = (unsigned char)((u32_le >> 8) & 0xFFU); + data_p[2] = (unsigned char)((u32_le >> 16) & 0xFFU); + data_p[3] = (unsigned char)((u32_le >> 24) & 0xFFU); + + if (data_pp != NULL) { + *data_pp = data_p + 4; + } + + return; +} + +} // End of namespace Saga |