351 lines
10 KiB
C++
351 lines
10 KiB
C++
/*
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Written by Yotam Mann, The Center for New Music and Audio Technologies,
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University of California, Berkeley. Copyright (c) 2012, The Regents of
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the University of California (Regents).
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Permission to use, copy, modify, distribute, and distribute modified versions
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of this software and its documentation without fee and without a signed
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licensing agreement, is hereby granted, provided that the above copyright
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notice, this paragraph and the following two paragraphs appear in all copies,
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modifications, and distributions.
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IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
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SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING
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OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS
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BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED
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HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE
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MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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For bug reports and feature requests please email me at yotam@cnmat.berkeley.edu
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*/
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#ifndef OSCMESSAGE_h
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#define OSCMESSAGE_h
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#include "OSCData.h"
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#include <Print.h>
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class OSCMessage
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{
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private:
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//friends
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friend class OSCBundle;
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/*=============================================================================
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PRIVATE VARIABLES
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=============================================================================*/
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//the address
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char * address;
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//the data
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OSCData ** data;
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//the number of OSCData in the data array
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int dataCount;
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//error codes for potential runtime problems
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OSCErrorCode error;
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/*=============================================================================
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DECODING INCOMING BYTES
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=============================================================================*/
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//the decoding states for incoming bytes
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enum DecodeState {
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STANDBY,
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ADDRESS,
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ADDRESS_PADDING,
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TYPES,
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TYPES_PADDING,
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DATA,
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DATA_PADDING,
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DONE,
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} decodeState;
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//stores incoming bytes until they can be decoded
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uint8_t * incomingBuffer;
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int incomingBufferSize; // how many bytes are stored
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int incomingBufferFree; // how many bytes are allocated but unused
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//adds a byte to the buffer
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void addToIncomingBuffer(uint8_t);
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//clears the incoming buffer
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void clearIncomingBuffer();
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//decoding function
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void decode(uint8_t);
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void decodeAddress();
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void decodeType(uint8_t);
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void decodeData(uint8_t);
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/*=============================================================================
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HELPER FUNCTIONS
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=============================================================================*/
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void setupMessage();
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//compares the OSCData's type char to a test char
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bool testType(int position, char type);
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//returns the number of bytes to pad to make it 4-bit aligned
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// int padSize(int bytes);
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public:
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//returns the OSCData at that position
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OSCData * getOSCData(int);
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/*=============================================================================
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CONSTRUCTORS / DESTRUCTOR
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=============================================================================*/
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//new constructor needs an address
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OSCMessage (const char * _address);
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//no address
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//placeholder since it's invalid OSC
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OSCMessage();
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//can optionally accept all of the data after the address
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//OSCMessage(const char * _address, char * types, ... );
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//created from another OSCMessage
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OSCMessage (OSCMessage *);
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//DESTRUCTOR
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~OSCMessage();
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//empties all of the data
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OSCMessage& empty();
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/*=============================================================================
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SETTING DATA
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=============================================================================*/
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//returns the OSCMessage so that multiple 'add's can be strung together
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template <typename T>
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OSCMessage& add(T datum){
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//make a piece of data
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OSCData * d = new OSCData(datum);
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//check if it has any errors
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if (d->error == ALLOCFAILED){
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error = ALLOCFAILED;
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} else {
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//resize the data array
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OSCData ** dataMem = (OSCData **) realloc(data, sizeof(OSCData *) * (dataCount + 1));
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if (dataMem == NULL){
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error = ALLOCFAILED;
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} else {
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data = dataMem;
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//add data to the end of the array
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data[dataCount] = d;
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//increment the data size
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dataCount++;
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}
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}
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return *this;
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}
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//blob specific add
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OSCMessage& add(uint8_t * blob, int length){
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//make a piece of data
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OSCData * d = new OSCData(blob, length);
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//check if it has any errors
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if (d->error == ALLOCFAILED){
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error = ALLOCFAILED;
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} else {
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//resize the data array
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OSCData ** dataMem = (OSCData **) realloc(data, sizeof(OSCData *) * (dataCount + 1));
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if (dataMem == NULL){
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error = ALLOCFAILED;
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} else {
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data = dataMem;
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//add data to the end of the array
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data[dataCount] = d;
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//increment the data size
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dataCount++;
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}
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}
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return *this;
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}
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//sets the data at a position
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template <typename T>
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OSCMessage& set(int position, T datum){
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if (position < dataCount){
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//replace the OSCData with a new one
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OSCData * oldDatum = getOSCData(position);
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//destroy the old one
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delete oldDatum;
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//make a new one
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OSCData * newDatum = new OSCData(datum);
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//test if there was an error
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if (newDatum->error == ALLOCFAILED){
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error = ALLOCFAILED;
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} else {
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//otherwise, put it in the data array
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data[position] = newDatum;
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}
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} else if (position == (dataCount)){
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//add the data to the end
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add(datum);
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} else {
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//else out of bounds error
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error = INDEX_OUT_OF_BOUNDS;
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}
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return *this;
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}
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//blob specific setter
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OSCMessage& set(int position, uint8_t * blob, int length){
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if (position < dataCount){
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//replace the OSCData with a new one
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OSCData * oldDatum = getOSCData(position);
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//destroy the old one
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delete oldDatum;
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//make a new one
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OSCData * newDatum = new OSCData(blob, length);
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//test if there was an error
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if (newDatum->error == ALLOCFAILED){
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error = ALLOCFAILED;
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} else {
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//otherwise, put it in the data array
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data[position] = newDatum;
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}
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} else if (position == (dataCount)){
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//add the data to the end
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add(blob, length);
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} else {
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//else out of bounds error
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error = INDEX_OUT_OF_BOUNDS;
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}
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return *this;
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}
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OSCMessage& setAddress(const char *);
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/*=============================================================================
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GETTING DATA
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getters take a position as an argument
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=============================================================================*/
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int32_t getInt(int);
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osctime_t getTime(int);
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float getFloat(int);
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double getDouble(int);
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bool getBoolean(int);
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//return the copied string's length
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int getString(int, char *);
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//check that it won't overflow the passed buffer's size with a third argument
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int getString(int, char *, int);
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//offset and size can be defined in order to only query a part of the string
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int getString(int, char *, int, int, int);
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//returns the number of unsigned int8's copied into the buffer
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int getBlob(int, uint8_t *);
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//check that it won't overflow the passed buffer's size with a third argument
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int getBlob(int, uint8_t *, int);
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//offset and size can be defined in order to only query a part of the blob's content
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int getBlob(int, uint8_t *, int, int, int);
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//get pointer to blob
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const uint8_t* getBlob(int);
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// returns the length of blob
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uint32_t getBlobLength(int position);
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//returns the number of bytes of the data at that position
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int getDataLength(int);
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//returns the type at the position
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char getType(int);
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//put the address in the buffer
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int getAddress(char * buffer, int offset = 0);
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int getAddress(char * buffer, int offset, int len);
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const char* getAddress();
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// Find out address length so we can create a buffer
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int getAddressLength(int offset = 0);
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/*=============================================================================
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TESTING DATA
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testers take a position as an argument
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=============================================================================*/
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bool isInt(int);
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bool isFloat(int);
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bool isBlob(int);
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bool isChar(int);
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bool isString(int);
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bool isDouble(int);
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bool isBoolean(int);
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bool isTime(int);
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/*=============================================================================
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PATTERN MATCHING
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=============================================================================*/
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//match the pattern against the address
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//returns true only for a complete match
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bool fullMatch( const char * pattern, int = 0);
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//returns the number of characters matched in the address
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int match( const char * pattern, int = 0);
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//calls the function with the message as the arg if it was a full match
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bool dispatch(const char * pattern, void (*callback)(OSCMessage &), int = 0);
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//like dispatch, but allows for partial matches
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//the address match offset is sent as an argument to the callback
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//also room for an option address offset to allow for multiple nested routes
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bool route(const char * pattern, void (*callback)(OSCMessage &, int), int = 0);
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/*=============================================================================
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SIZE
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=============================================================================*/
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//the number of data that the message contains
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int size();
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//computes the number of bytes the OSCMessage occupies if everything is 32-bit aligned
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int bytes();
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/*=============================================================================
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TRANSMISSION
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=============================================================================*/
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//send the message
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OSCMessage& send(Print &p);
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//fill the message from a byte stream
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OSCMessage& fill(uint8_t);
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OSCMessage& fill(uint8_t *, int);
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/*=============================================================================
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ERROR
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=============================================================================*/
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bool hasError();
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OSCErrorCode getError();
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};
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#endif
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