/*************************************************************************************************/ /*! * \file bstream.h * * \brief Byte stream to integer conversion macros. * * $Date: 2016-08-31 07:40:56 -0700 (Wed, 31 Aug 2016) $ * $Revision: 8672 $ * * Copyright (c) 2009 Wicentric, Inc., all rights reserved. * Wicentric confidential and proprietary. * * IMPORTANT. Your use of this file is governed by a Software License Agreement * ("Agreement") that must be accepted in order to download or otherwise receive a * copy of this file. You may not use or copy this file for any purpose other than * as described in the Agreement. If you do not agree to all of the terms of the * Agreement do not use this file and delete all copies in your possession or control; * if you do not have a copy of the Agreement, you must contact Wicentric, Inc. prior * to any use, copying or further distribution of this software. */ /*************************************************************************************************/ #ifndef BSTREAM_H #define BSTREAM_H #ifdef __cplusplus extern "C" { #endif /************************************************************************************************** Macros **************************************************************************************************/ /*! * Macros for converting a little endian byte buffer to integers. */ #define BYTES_TO_UINT16(n, p) {n = ((uint16_t)(p)[0] + ((uint16_t)(p)[1] << 8));} #define BYTES_TO_UINT24(n, p) {n = ((uint16_t)(p)[0] + ((uint16_t)(p)[1] << 8) + \ ((uint16_t)(p)[2] << 16));} #define BYTES_TO_UINT32(n, p) {n = ((uint32_t)(p)[0] + ((uint32_t)(p)[1] << 8) + \ ((uint32_t)(p)[2] << 16) + ((uint32_t)(p)[3] << 24));} #define BYTES_TO_UINT40(n, p) {n = ((uint64_t)(p)[0] + ((uint64_t)(p)[1] << 8) + \ ((uint64_t)(p)[2] << 16) + ((uint64_t)(p)[3] << 24) + \ ((uint64_t)(p)[4] << 32));} #define BYTES_TO_UINT64(n, p) {n = ((uint64_t)(p)[0] + ((uint64_t)(p)[1] << 8) + \ ((uint64_t)(p)[2] << 16) + ((uint64_t)(p)[3] << 24) + \ ((uint64_t)(p)[4] << 32) + ((uint64_t)(p)[5] << 40) + \ ((uint64_t)(p)[6] << 48) + ((uint64_t)(p)[7] << 56));} /*! * Macros for converting little endian integers to array of bytes */ #define UINT16_TO_BYTES(n) ((u8_t) (n)), ((u8_t)((n) >> 8)) #define UINT32_TO_BYTES(n) ((u8_t) (n)), ((u8_t)((n) >> 8)), ((u8_t)((n) >> 16)), ((u8_t)((n) >> 24)) /*! * Macros for converting little endian integers to single bytes */ #define UINT16_TO_BYTE0(n) ((u8_t) (n)) #define UINT16_TO_BYTE1(n) ((u8_t) ((n) >> 8)) #define UINT32_TO_BYTE0(n) ((u8_t) (n)) #define UINT32_TO_BYTE1(n) ((u8_t) ((n) >> 8)) #define UINT32_TO_BYTE2(n) ((u8_t) ((n) >> 16)) #define UINT32_TO_BYTE3(n) ((u8_t) ((n) >> 24)) /*! * Macros for converting a little endian byte stream to integers, with increment. */ #define BSTREAM_TO_INT8(n, p) {n = (int8_t)(*(p)++);} #define BSTREAM_TO_UINT8(n, p) {n = (u8_t)(*(p)++);} #define BSTREAM_TO_UINT16(n, p) {BYTES_TO_UINT16(n, p); p += 2;} #define BSTREAM_TO_UINT24(n, p) {BYTES_TO_UINT24(n, p); p += 3;} #define BSTREAM_TO_UINT32(n, p) {BYTES_TO_UINT32(n, p); p += 4;} #define BSTREAM_TO_UINT40(n, p) {BYTES_TO_UINT40(n, p); p += 5;} /*! * Macros for converting integers to a little endian byte stream, with increment. */ #define UINT8_TO_BSTREAM(p, n) {*(p)++ = (u8_t)(n);} #define UINT16_TO_BSTREAM(p, n) {*(p)++ = (u8_t)(n); *(p)++ = (u8_t)((n) >> 8);} #define UINT24_TO_BSTREAM(p, n) {*(p)++ = (u8_t)(n); *(p)++ = (u8_t)((n) >> 8); \ *(p)++ = (u8_t)((n) >> 16);} #define UINT32_TO_BSTREAM(p, n) {*(p)++ = (u8_t)(n); *(p)++ = (u8_t)((n) >> 8); \ *(p)++ = (u8_t)((n) >> 16); *(p)++ = (u8_t)((n) >> 24);} #define UINT40_TO_BSTREAM(p, n) {*(p)++ = (u8_t)(n); *(p)++ = (u8_t)((n) >> 8); \ *(p)++ = (u8_t)((n) >> 16); *(p)++ = (u8_t)((n) >> 24); \ *(p)++ = (u8_t)((n) >> 32);} /*! * Macros for converting integers to a little endian byte stream, without increment. */ #define UINT16_TO_BUF(p, n) {(p)[0] = (u8_t)(n); (p)[1] = (u8_t)((n) >> 8);} #define UINT24_TO_BUF(p, n) {(p)[0] = (u8_t)(n); (p)[1] = (u8_t)((n) >> 8); \ (p)[2] = (u8_t)((n) >> 16);} #define UINT32_TO_BUF(p, n) {(p)[0] = (u8_t)(n); (p)[1] = (u8_t)((n) >> 8); \ (p)[2] = (u8_t)((n) >> 16); (p)[3] = (u8_t)((n) >> 24);} /*! * Macros for comparing a little endian byte buffer to integers. */ #define BYTES_UINT16_CMP(p, n) ((p)[1] == UINT16_TO_BYTE1(n) && (p)[0] == UINT16_TO_BYTE0(n)) /*! * Macros for IEEE FLOAT type: exponent = byte 3, mantissa = bytes 2-0 */ #define FLT_TO_UINT32(m, e) ((m) | ((int32_t)(e) << 24)) #define UINT32_TO_FLT(m, e, n) {m = UINT32_TO_FLT_M(n); e = UINT32_TO_FLT_E(n);} #define UINT32_TO_FLT_M(n) ((((n) & 0x00FFFFFF) >= 0x00800000) ? \ ((int32_t)(((n) | 0xFF000000))) : ((int32_t)((n) & 0x00FFFFFF))) #define UINT32_TO_FLT_E(n) ((int8_t)(n >> 24)) /*! * Macros for IEEE SFLOAT type: exponent = bits 15-12, mantissa = bits 11-0 */ #define SFLT_TO_UINT16(m, e) ((m) | ((s16_t)(e) << 12)) #define UINT16_TO_SFLT(m, e, n) {m = UINT16_TO_SFLT_M(n); e = UINT16_TO_SFLT_E(n);} #define UINT16_TO_SFLT_M(n) ((((n) & 0x0FFF) >= 0x0800) ? \ ((s16_t)(((n) | 0xF000))) : ((s16_t)((n) & 0x0FFF))) #define UINT16_TO_SFLT_E(n) (((n >> 12) >= 0x0008) ? \ ((int8_t)(((n >> 12) | 0xF0))) : ((int8_t)(n >> 12))) /************************************************************************************************** Function Declarations **************************************************************************************************/ #ifdef __cplusplus }; #endif #endif /* BSTREAM_H */