// scaledencode.h was generated by ProtoGen version 3.2.a /* * This file 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 3 of the License, or * (at your option) any later version. * * This file 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, see . * * Author: Oliver Walters / Currawong Engineering Pty Ltd */ #ifndef _SCALEDENCODE_H #define _SCALEDENCODE_H // Language target is C, C++ compilers: don't mangle us #ifdef __cplusplus extern "C" { #endif /*! * \file */ /*! * \file * scaledencode routines place scaled numbers into a byte stream. * * scaledencode routines place scaled values into a big or little endian byte * stream. The values can be any legitimate type (double, float, uint32_t, * uint16_t, uint8_t, int32_t, int16_t, int8_t), and are encoded as either a * unsigned or signed integer from 1 to 8 bytes in length. Unsigned encodings * allow the caller to specify a minimum and a maximum value, with the only * limitation that the maximum value must be more than the minimum. Signed * encodings only allow the caller to specify a maximum value which gives * maximum absolute value that can be encoded. * * An example encoding would be: take a float that represents speed in meters * per second and encode it in two bytes from -200 to 200 meters per second. * In that example the encoding function would be: * * float32ScaledTo2SignedBeBytes(speed, bytestream, &index, 200); * * This would scale the speed according to (32767/200), and copy the resulting * two bytes to bytestream[index] as a signed 16 bit number in big endian * order. This would result in a velocity resolution of 0.006 m/s. * * Another example encoding is: take a double that represents altitude in * meters and encode it in three bytes from -1000 to 49000 meters: * * float64ScaledTo3UnsignedLeBytes(alt, bytestream, &index, -1000, 49000); * * This would transform the altitude according to (alt *(16777215/50000) + 1000) * and copy the resulting three bytes to bytestream[index] as an unsigned 24 * bit number in little endian order. This would result in an altitude * resolution of 0.003 meters. * * scaledencode does not include routines that increase the resolution of the * inmemory value. For example the function floatScaledTo5UnsignedBeBytes() does * not exist, because expanding a float to 5 bytes does not make any resolution * improvement over encoding it in 4 bytes. In general the encoded format * must be equal to or less than the number of bytes of the raw data. * * Code generation for this module was affected by these global flags: * 64-bit integers are not supported. * Normal bitfields are supported, long bitfields are not. * Double precision floating points are not supported. */ #define __STDC_CONSTANT_MACROS #include //! Scale a float using floating point scaling to the base integer type used for bitfields. unsigned int float32ScaledToBitfield(float value, float min, float scaler, int bits); //! Encode a float on a byte stream by floating point scaling to fit in 4 unsigned bytes in big endian order. void float32ScaledTo4UnsignedBeBytes(float value, uint8_t* bytes, int* index, float min, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 4 unsigned bytes in little endian order. void float32ScaledTo4UnsignedLeBytes(float value, uint8_t* bytes, int* index, float min, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 4 signed bytes in big endian order. void float32ScaledTo4SignedBeBytes(float value, uint8_t* bytes, int* index, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 4 signed bytes in little endian order. void float32ScaledTo4SignedLeBytes(float value, uint8_t* bytes, int* index, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 3 unsigned bytes in big endian order. void float32ScaledTo3UnsignedBeBytes(float value, uint8_t* bytes, int* index, float min, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 3 unsigned bytes in little endian order. void float32ScaledTo3UnsignedLeBytes(float value, uint8_t* bytes, int* index, float min, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 3 signed bytes in big endian order. void float32ScaledTo3SignedBeBytes(float value, uint8_t* bytes, int* index, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 3 signed bytes in little endian order. void float32ScaledTo3SignedLeBytes(float value, uint8_t* bytes, int* index, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 2 unsigned bytes in big endian order. void float32ScaledTo2UnsignedBeBytes(float value, uint8_t* bytes, int* index, float min, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 2 unsigned bytes in little endian order. void float32ScaledTo2UnsignedLeBytes(float value, uint8_t* bytes, int* index, float min, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 2 signed bytes in big endian order. void float32ScaledTo2SignedBeBytes(float value, uint8_t* bytes, int* index, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 2 signed bytes in little endian order. void float32ScaledTo2SignedLeBytes(float value, uint8_t* bytes, int* index, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 1 unsigned byte. void float32ScaledTo1UnsignedBytes(float value, uint8_t* bytes, int* index, float min, float scaler); //! Encode a float on a byte stream by floating point scaling to fit in 1 signed byte. void float32ScaledTo1SignedBytes(float value, uint8_t* bytes, int* index, float scaler); //! Scale a uint32_t using integer scaling to the base integer type used for bitfields. unsigned int uint32ScaledToBitfield(uint32_t value, int32_t min, uint32_t scaler, int bits); //! Encode a uint32_t on a byte stream by integer scaling to fit in 4 unsigned bytes in big endian order. void uint32ScaledTo4UnsignedBeBytes(uint32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 4 unsigned bytes in little endian order. void uint32ScaledTo4UnsignedLeBytes(uint32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 4 signed bytes in big endian order. void uint32ScaledTo4SignedBeBytes(uint32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 4 signed bytes in little endian order. void uint32ScaledTo4SignedLeBytes(uint32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 3 unsigned bytes in big endian order. void uint32ScaledTo3UnsignedBeBytes(uint32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 3 unsigned bytes in little endian order. void uint32ScaledTo3UnsignedLeBytes(uint32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 3 signed bytes in big endian order. void uint32ScaledTo3SignedBeBytes(uint32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 3 signed bytes in little endian order. void uint32ScaledTo3SignedLeBytes(uint32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 2 unsigned bytes in big endian order. void uint32ScaledTo2UnsignedBeBytes(uint32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 2 unsigned bytes in little endian order. void uint32ScaledTo2UnsignedLeBytes(uint32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 2 signed bytes in big endian order. void uint32ScaledTo2SignedBeBytes(uint32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 2 signed bytes in little endian order. void uint32ScaledTo2SignedLeBytes(uint32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 1 unsigned byte. void uint32ScaledTo1UnsignedBytes(uint32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a uint32_t on a byte stream by integer scaling to fit in 1 signed byte. void uint32ScaledTo1SignedBytes(uint32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Scale a int32_t using integer scaling to the base integer type used for bitfields. unsigned int int32ScaledToBitfield(int32_t value, int32_t min, uint32_t scaler, int bits); //! Encode a int32_t on a byte stream by integer scaling to fit in 4 unsigned bytes in big endian order. void int32ScaledTo4UnsignedBeBytes(int32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 4 unsigned bytes in little endian order. void int32ScaledTo4UnsignedLeBytes(int32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 4 signed bytes in big endian order. void int32ScaledTo4SignedBeBytes(int32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 4 signed bytes in little endian order. void int32ScaledTo4SignedLeBytes(int32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 3 unsigned bytes in big endian order. void int32ScaledTo3UnsignedBeBytes(int32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 3 unsigned bytes in little endian order. void int32ScaledTo3UnsignedLeBytes(int32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 3 signed bytes in big endian order. void int32ScaledTo3SignedBeBytes(int32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 3 signed bytes in little endian order. void int32ScaledTo3SignedLeBytes(int32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 2 unsigned bytes in big endian order. void int32ScaledTo2UnsignedBeBytes(int32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 2 unsigned bytes in little endian order. void int32ScaledTo2UnsignedLeBytes(int32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 2 signed bytes in big endian order. void int32ScaledTo2SignedBeBytes(int32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 2 signed bytes in little endian order. void int32ScaledTo2SignedLeBytes(int32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 1 unsigned byte. void int32ScaledTo1UnsignedBytes(int32_t value, uint8_t* bytes, int* index, int32_t min, uint32_t scaler); //! Encode a int32_t on a byte stream by integer scaling to fit in 1 signed byte. void int32ScaledTo1SignedBytes(int32_t value, uint8_t* bytes, int* index, uint32_t scaler); //! Scale a uint16_t using integer scaling to the base integer type used for bitfields. unsigned int uint16ScaledToBitfield(uint16_t value, int16_t min, uint16_t scaler, int bits); //! Encode a uint16_t on a byte stream by integer scaling to fit in 2 unsigned bytes in big endian order. void uint16ScaledTo2UnsignedBeBytes(uint16_t value, uint8_t* bytes, int* index, int16_t min, uint16_t scaler); //! Encode a uint16_t on a byte stream by integer scaling to fit in 2 unsigned bytes in little endian order. void uint16ScaledTo2UnsignedLeBytes(uint16_t value, uint8_t* bytes, int* index, int16_t min, uint16_t scaler); //! Encode a uint16_t on a byte stream by integer scaling to fit in 2 signed bytes in big endian order. void uint16ScaledTo2SignedBeBytes(uint16_t value, uint8_t* bytes, int* index, uint16_t scaler); //! Encode a uint16_t on a byte stream by integer scaling to fit in 2 signed bytes in little endian order. void uint16ScaledTo2SignedLeBytes(uint16_t value, uint8_t* bytes, int* index, uint16_t scaler); //! Encode a uint16_t on a byte stream by integer scaling to fit in 1 unsigned byte. void uint16ScaledTo1UnsignedBytes(uint16_t value, uint8_t* bytes, int* index, int16_t min, uint16_t scaler); //! Encode a uint16_t on a byte stream by integer scaling to fit in 1 signed byte. void uint16ScaledTo1SignedBytes(uint16_t value, uint8_t* bytes, int* index, uint16_t scaler); //! Scale a int16_t using integer scaling to the base integer type used for bitfields. unsigned int int16ScaledToBitfield(int16_t value, int16_t min, uint16_t scaler, int bits); //! Encode a int16_t on a byte stream by integer scaling to fit in 2 unsigned bytes in big endian order. void int16ScaledTo2UnsignedBeBytes(int16_t value, uint8_t* bytes, int* index, int16_t min, uint16_t scaler); //! Encode a int16_t on a byte stream by integer scaling to fit in 2 unsigned bytes in little endian order. void int16ScaledTo2UnsignedLeBytes(int16_t value, uint8_t* bytes, int* index, int16_t min, uint16_t scaler); //! Encode a int16_t on a byte stream by integer scaling to fit in 2 signed bytes in big endian order. void int16ScaledTo2SignedBeBytes(int16_t value, uint8_t* bytes, int* index, uint16_t scaler); //! Encode a int16_t on a byte stream by integer scaling to fit in 2 signed bytes in little endian order. void int16ScaledTo2SignedLeBytes(int16_t value, uint8_t* bytes, int* index, uint16_t scaler); //! Encode a int16_t on a byte stream by integer scaling to fit in 1 unsigned byte. void int16ScaledTo1UnsignedBytes(int16_t value, uint8_t* bytes, int* index, int16_t min, uint16_t scaler); //! Encode a int16_t on a byte stream by integer scaling to fit in 1 signed byte. void int16ScaledTo1SignedBytes(int16_t value, uint8_t* bytes, int* index, uint16_t scaler); //! Scale a uint8_t using integer scaling to the base integer type used for bitfields. unsigned int uint8ScaledToBitfield(uint8_t value, int8_t min, uint8_t scaler, int bits); //! Encode a uint8_t on a byte stream by integer scaling to fit in 1 unsigned byte. void uint8ScaledTo1UnsignedBytes(uint8_t value, uint8_t* bytes, int* index, int8_t min, uint8_t scaler); //! Encode a uint8_t on a byte stream by integer scaling to fit in 1 signed byte. void uint8ScaledTo1SignedBytes(uint8_t value, uint8_t* bytes, int* index, uint8_t scaler); //! Scale a int8_t using integer scaling to the base integer type used for bitfields. unsigned int int8ScaledToBitfield(int8_t value, int8_t min, uint8_t scaler, int bits); //! Encode a int8_t on a byte stream by integer scaling to fit in 1 unsigned byte. void int8ScaledTo1UnsignedBytes(int8_t value, uint8_t* bytes, int* index, int8_t min, uint8_t scaler); //! Encode a int8_t on a byte stream by integer scaling to fit in 1 signed byte. void int8ScaledTo1SignedBytes(int8_t value, uint8_t* bytes, int* index, uint8_t scaler); #ifdef __cplusplus } #endif #endif // _SCALEDENCODE_H