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OSC meeseage tranceiver(Sender/Receiver) for Sparkfun CC3000 WiFi Shield. Supports the following boards: FRDM-KL25Z,ST Nucleo F401RE,ST Nucleo F030R8,LPCXpresso1549,Seeduino-Arch-Pro.
Dependencies: cc3000_hostdriver_mbedsocket mbed
Diff: OSCmsgCodec.cpp
- Revision:
- 0:eadd1c588343
diff -r 000000000000 -r eadd1c588343 OSCmsgCodec.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/OSCmsgCodec.cpp Sun Aug 31 15:10:45 2014 +0000 @@ -0,0 +1,203 @@ +/* +<---------------------------------------------------------------------------------- + + OSC message Codec(encoder/decoder) + + version: 1.3 (2014/ 8/31) encoder bufix(enoceder returns byte length) + version: 1.2 (2014/ 8/30) decoder bufix + version: 1.1 (2013/11/20) support BIG_ENDIAN by #define + version: 1.0 (2013/11/10) + + Copyright (C) 2011,2013,2014 S.Komatsu + released under the MIT License: http://mbed.org/license/mit + + please refer to: http://opensoundcontrol.org/introduction-osc for OSC(Open Sound Control) + + The followings are supported: + + Features: + Packet Parsing (Client) + Packet Construction (Server) + Bundle NOT Support + Timetag NOT Support + + Type Support: + i: int32 + b: blob + s: string + f: float32 + m: MIDI message(port id, status byte, data1, data2) // I don't know the detail + + Change Log: + Bug(string length is not correct in encoding) Fix on 2013/11/10 (v0.9 -> v1.0) + +>---------------------------------------------------------------------------------- +*/ + +#include "OSCmsgCodec.h" +//#define BIG_ENDIAN + +int lenAlign4B(int len) { + if ((len % 4) == 0) {return len; } + else {return len+4-(len % 4);} +} + + +int encOSCmsg(char *packet , union OSCarg *msg){ + // *** important notice *** + // output buffer must be cleared before call this + char *p, *s, *d, *typeTag; + char c; + + p=packet; + d=p; + s=msg[0].address; // address + for(int i=0; i<strlen(msg[0].address); i++) *d++ = *s++; + *d=0; // terminator +// p += 4*((strlen(msg[0].address)+1)/4+1); + p += lenAlign4B(strlen(msg[0].address)+1); + // + s=msg[1].typeTag; + d=p; + for(int i=0; i<strlen(msg[1].typeTag); i++) *d++ = *s++; + *d=0; // terminator +// p += 4*((strlen(msg[1].s)+1)/4+1); + p += lenAlign4B(strlen(msg[1].typeTag)+1); + // + typeTag=msg[1].s+1; // skip ',' + for(int n=0; n<strlen(typeTag); n++){ + c = typeTag[n]; + if (('s'==c)) { + s=msg[n+2].s; + d=p; + for(int i=0; i<strlen(msg[n+2].s); i++) *d++ = *s++; + *d=0; // terminater +// p += 4*((strlen(msg[n+2].s)+1)/4+1); + p += lenAlign4B(strlen(msg[n+2].s)+1); + } + else if (('i'==c)||('f'==c)) { +#ifdef BIG_ENDIAN + // no change endian (big to big) + p[0]=msg[n+2]._b[0]; + p[1]=msg[n+2]._b[1]; + p[2]=msg[n+2]._b[2]; + p[3]=msg[n+2]._b[3]; +#else + // change endian (little to big) + p[0]=msg[n+2]._b[3]; + p[1]=msg[n+2]._b[2]; + p[2]=msg[n+2]._b[1]; + p[3]=msg[n+2]._b[0]; +#endif + p +=4; + } + else if ('b'==c) { + // put length of blog +#ifdef BIG_ENDIAN + // no change endian (big to big) + p[0]=msg[n+2]._b[0]; + p[1]=msg[n+2]._b[1]; + p[2]=msg[n+2]._b[2]; + + p[3]=msg[n+2]._b[3]; +#else + // change endian (little to big) + p[0]=msg[n+2]._b[3]; + p[1]=msg[n+2]._b[2]; + p[2]=msg[n+2]._b[1]; + p[3]=msg[n+2]._b[0]; +#endif + p +=4; + // get ponter of blog (copy to msg[n].blog.p) + s=msg[n+2].blob.p; + d=p; + for(int i=0; i<msg[n+2].blob.len; i++) *d++ = *s++; + p += 4*(msg[n+2].blob.len/4+1); + } + else if ('m'==c) { + // get midi data (copy to msg[n].m[]) + p[0]=msg[n+2].m[0]; + p[1]=msg[n+2].m[1]; + p[2]=msg[n+2].m[2]; + p[3]=msg[n+2].m[3]; + p +=4; + } + else { + //printf("*** Not Supported TypeTag:%s ****\n",typeTag); + } + }; + //return (p-packet); // return packet size + // bugfix 2014/8/31 + return sizeof(char)*(p-packet); // return byte length +}; + +void decOSCmsg(char *packet , union OSCarg *msg){ + // Caution: the returned result points to packet as blobs or strings (not newly allocatd) + char *p, *typeTag; + char c; int n; + + msg[0].address = packet; // address + msg[1].typeTag = packet+4*((strlen(msg[0].s)+1)/4+1);//typeTag + typeTag=msg[1].s+1; // skip ',' + + // bugfix 2014/8/30 + if (strlen(typeTag)%2 == 0) p= msg[1].s+4*((strlen(msg[1].s)+1)/4); + else p= msg[1].s+4*((strlen(msg[1].s)+1)/4+1); + + for(n=0; n<strlen(typeTag); n++){ + c = typeTag[n]; + if (('s'==c)) { + msg[n+2].s=p; + //p += 4*((strlen(msg[n+2].s)+1)/4+1); + p += lenAlign4B(strlen(msg[n+2].s)+1); + } + else if (('i'==c)||('f'==c)) { +#ifdef BIG_ENDIAN + // no change endian (big to big) + msg[n+2]._b[0]=p[0]; + msg[n+2]._b[1]=p[1]; + msg[n+2]._b[2]=p[2]; + msg[n+2]._b[3]=p[3]; +#else + // change endian (big to little) + msg[n+2]._b[3]=p[0]; + msg[n+2]._b[2]=p[1]; + msg[n+2]._b[1]=p[2]; + msg[n+2]._b[0]=p[3]; +#endif + p +=4; + } + else if ('b'==c) { + // get lenth of blog (copy to msg[n].blog.len) +#ifdef BIG_ENDIAN + // no change endian (big to big) + msg[n+2]._b[0]=p[0]; + msg[n+2]._b[1]=p[1]; + msg[n+2]._b[2]=p[2]; + msg[n+2]._b[3]=p[3]; +#else + // change endian (big to little) + msg[n+2]._b[3]=p[0]; + msg[n+2]._b[2]=p[1]; + msg[n+2]._b[1]=p[2]; + msg[n+2]._b[0]=p[3]; +#endif + p +=4; + // get ponter of blog (copy to msg[n].blog.p) + msg[n+2].blob.p=p; + //p += 4*(msg[n+2].blob.len/4+1); + p += lenAlign4B(msg[n+2].blob.len+1); + } + else if ('m'==c) { + // get midi data (copy to msg[n].m[]) + msg[n+2].m[0]=p[0]; + msg[n+2].m[1]=p[1]; + msg[n+2].m[2]=p[2]; + msg[n+2].m[3]=p[3]; + p +=4; + } + else { + //printf("*** Not Supported TypeTag:%s ****\n",typeTag); + } + }; +};