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Diffstat (limited to 'core/io/marshalls.h')
| -rw-r--r-- | core/io/marshalls.h | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/core/io/marshalls.h b/core/io/marshalls.h new file mode 100644 index 000000000..bb8d3b336 --- /dev/null +++ b/core/io/marshalls.h @@ -0,0 +1,190 @@ +/*************************************************************************/ +/* marshalls.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ +#ifndef MARSHALLS_H +#define MARSHALLS_H + +#include "typedefs.h" + +#include "variant.h" + +/** + * Miscelaneous helpers for marshalling data types, and encoding + * in an endian independent way + */ + + +union MarshallFloat { + + uint32_t i; ///< int + float f; ///< float +}; + +union MarshallDouble { + + uint64_t l; ///< long long + double d; ///< double +}; + +static inline unsigned int encode_uint16(uint16_t p_uint, uint8_t *p_arr) { + + for (int i=0;i<2;i++) { + + *p_arr=p_uint&0xFF; + p_arr++; p_uint>>=8; + } + + return sizeof( uint16_t ); +} + +static inline unsigned int encode_uint32(uint32_t p_uint, uint8_t *p_arr) { + + for (int i=0;i<4;i++) { + + *p_arr=p_uint&0xFF; + p_arr++; p_uint>>=8; + } + + return sizeof( uint32_t ); +} + +static inline unsigned int encode_float(float p_float, uint8_t *p_arr) { + + MarshallFloat mf; + mf.f=p_float; + encode_uint32( mf.i, p_arr ); + + return sizeof( uint32_t ); +} + +static inline unsigned int encode_uint64(uint64_t p_uint, uint8_t *p_arr) { + + for (int i=0;i<8;i++) { + + *p_arr=p_uint&0xFF; + p_arr++; p_uint>>=8; + } + + return sizeof(uint64_t); +} + +static inline unsigned int encode_double(double p_double, uint8_t *p_arr) { + + MarshallDouble md; + md.d=p_double; + encode_uint64( md.l, p_arr ); + + return sizeof(uint64_t); + +} + + +static inline int encode_cstring(const char *p_string, uint8_t * p_data) { + + int len=0; + + while (*p_string) { + + if (p_data) { + + *p_data=(uint8_t)*p_string; + p_data++; + } + p_string++; + len++; + }; + + if (p_data) *p_data = 0; + return len+1; +} + +static inline uint16_t decode_uint16(const uint8_t *p_arr) { + + uint16_t u=0; + + for (int i=0;i<2;i++) { + + uint16_t b = *p_arr; + b<<=(i*8); + u|=b; + p_arr++; + } + + return u; +} + +static inline uint32_t decode_uint32(const uint8_t *p_arr) { + + uint32_t u=0; + + for (int i=0;i<4;i++) { + + uint32_t b = *p_arr; + b<<=(i*8); + u|=b; + p_arr++; + } + + return u; +} + +static inline float decode_float(const uint8_t *p_arr) { + + MarshallFloat mf; + mf.i = decode_uint32(p_arr); + return mf.f; +} + +static inline uint64_t decode_uint64(const uint8_t *p_arr) { + + uint64_t u=0; + + for (int i=0;i<8;i++) { + + uint64_t b = (*p_arr)&0xFF; + b<<=(i*8); + u|=b; + p_arr++; + } + + return u; +} + +static inline double decode_double(const uint8_t *p_arr) { + + MarshallDouble md; + md.l = decode_uint64( p_arr ); + return md.d; + +} + + +Error decode_variant(Variant& r_variant,const uint8_t *p_buffer, int p_len,int *r_len=NULL); +Error encode_variant(const Variant& p_variant, uint8_t *r_buffer, int &r_len); + +#endif |