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/*
SuperCollider real time audio synthesis system
Copyright (c) 2002 James McCartney. All rights reserved.
http://www.audiosynth.com
This program 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 2 of the License, or
(at your option) any later version.
This program 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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _sc_msg_iter_
#define _sc_msg_iter_
#include "SC_Endian.h"
#include "SC_Types.h"
#include <string.h>
// return the ptr to the byte after the OSC string.
inline char* OSCstrskip(char *str)
{
// while (str[3]) { str += 4; }
// return str + 4;
do { str += 4; } while (str[-1]);
return str;
}
// returns the number of bytes (including padding) for an OSC string.
inline int OSCstrlen(char *strin)
{
return OSCstrskip(strin) - strin;
}
// returns a float, converting an int if necessary
inline float32 OSCfloat(char* inData)
{
elem32* elem = (elem32*)inData;
elem->u = ntohl(elem->u);
return elem->f;
}
inline int32 OSCint(char* inData)
{
return (int32)ntohl(*(uint32*)inData);
}
inline int64 OSCtime(char* inData)
{
return ((int64)ntohl(*(uint32*)inData) << 32) + (ntohl(*(uint32*)(inData + 4)));
}
inline float64 OSCdouble(char* inData)
{
elem64 slot;
slot.i = ((int64)ntohl(*(uint32*)inData) << 32) + (ntohl(*(uint32*)(inData + 4)));
return slot.f;
}
struct sc_msg_iter
{
char *data, *rdpos, *endpos, *tags;
int size, count;
sc_msg_iter();
sc_msg_iter(int inSize, char* inData);
void init(int inSize, char* inData);
int32 geti(int32 defaultValue = 0);
float32 getf(float32 defaultValue = 0.f);
float64 getd(float64 defaultValue = 0.f);
char *gets(char* defaultValue = 0);
int32 *gets4(char* defaultValue = 0);
size_t getbsize();
void getb(char* outData, size_t inSize);
void skipb();
int remain() { return endpos - rdpos; }
char nextTag(char defaultTag = 'f') { return tags ? tags[count] : defaultTag; }
};
inline sc_msg_iter::sc_msg_iter()
{
}
inline sc_msg_iter::sc_msg_iter(int inSize, char* inData)
{
init(inSize, inData);
}
inline void sc_msg_iter::init(int inSize, char* inData)
{
data = inData;
size = inSize;
endpos = data + size;
count = 0;
if (data[0] == ',') {
tags = data+1;
rdpos = OSCstrskip(data);
} else {
tags = 0;
rdpos = data;
}
}
inline int32 sc_msg_iter::geti(int32 defaultValue)
{
int value;
if (remain() <= 0) return defaultValue;
if (tags) {
if (tags[count] == 'i') {
value = OSCint(rdpos);
rdpos += sizeof(int32);
} else if (tags[count] == 'f') {
value = (int32)OSCfloat(rdpos);
rdpos += sizeof(float32);
/* } else if (tags[count] == 's') {
value = atoi(rdpos);
rdpos = OSCstrskip(rdpos);
*/
} else {
value = defaultValue;
}
} else {
value = (int)OSCint(rdpos);
rdpos += sizeof(int32);
}
count ++;
return value;
}
inline float32 sc_msg_iter::getf(float32 defaultValue)
{
float32 value;
if (remain() <= 0) return defaultValue;
if (tags) {
if (tags[count] == 'f') {
value = OSCfloat(rdpos);
rdpos += sizeof(float32);
} else if (tags[count] == 'd') {
value = (float64)OSCdouble(rdpos);
rdpos += sizeof(float64);
} else if (tags[count] == 'i') {
value = (float32)OSCint(rdpos);
rdpos += sizeof(int32);
/* } else if (tags[count] == 's') {
value = atof(rdpos);
rdpos = OSCstrskip(rdpos);
*/
} else {
value = defaultValue;
}
} else {
value = OSCfloat(rdpos);
rdpos += sizeof(float32);
}
count ++;
return value;
}
inline float64 sc_msg_iter::getd(float64 defaultValue)
{
float64 value;
if (remain() <= 0) return defaultValue;
if (tags) {
if (tags[count] == 'f') {
value = (float64)OSCfloat(rdpos);
rdpos += sizeof(float32);
} else if (tags[count] == 'd') {
value = OSCdouble(rdpos);
rdpos += sizeof(float64);
} else if (tags[count] == 'i') {
value = (float64)OSCint(rdpos);
rdpos += sizeof(int32);
/* } else if (tags[count] == 's') {
value = atof(rdpos);
rdpos = OSCstrskip(rdpos);
*/
} else {
value = defaultValue;
}
} else {
value = OSCdouble(rdpos);
rdpos += sizeof(float64);
}
count ++;
return value;
}
inline char* sc_msg_iter::gets(char* defaultValue)
{
char* value;
if (remain() <= 0) return 0;
if (tags) {
if (tags[count] == 's') {
value = rdpos;
rdpos = OSCstrskip(rdpos);
} else {
value = defaultValue;
}
} else {
value = rdpos;
rdpos = OSCstrskip(rdpos);
}
count ++;
return value;
}
inline int32* sc_msg_iter::gets4(char* defaultValue)
{
int32* value;
if (remain() <= 0) return 0;
if (tags) {
if (tags[count] == 's') {
value = (int32*)rdpos;
rdpos = OSCstrskip(rdpos);
} else {
value = (int32*)defaultValue;
}
} else {
value = (int32*)rdpos;
rdpos = OSCstrskip(rdpos);
}
count ++;
return value;
}
inline size_t sc_msg_iter::getbsize()
{
if (remain() <= 0) return 0;
if (tags && tags[count] != 'b') return 0;
return (size_t)OSCint(rdpos);
}
inline void sc_msg_iter::getb(char* outArray, size_t size)
{
size_t len = OSCint(rdpos);
if (size < len) return;
rdpos += sizeof(int32);
size_t len4 = (len + 3) & -4;
memcpy(outArray, rdpos, size);
rdpos += len4;
count ++;
}
inline void sc_msg_iter::skipb()
{
size_t len = OSCint(rdpos);
rdpos += sizeof(int32);
size_t len4 = (len + 3) & -4;
rdpos += len4;
count ++;
}
#endif
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