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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#include "SC_Endian.h"
#include "SC_Types.h"
#include <string.h>
// return the ptr to the byte after the OSC string.
inline const char* OSCstrskip(const 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 size_t OSCstrlen(const char* strin) { return (size_t)(OSCstrskip(strin) - strin); }
// returns a float, converting an int if necessary
inline float32 OSCfloat(const char* inData) {
elem32 elem;
elem.u = sc_ntohl(*(uint32*)inData);
return elem.f;
}
inline int32 OSCint(const char* inData) { return (int32)sc_ntohl(*(uint32*)inData); }
inline int64 OSCtime(const char* inData) {
return ((int64)sc_ntohl(*(uint32*)inData) << 32) + (sc_ntohl(*(uint32*)(inData + 4)));
}
inline float64 OSCdouble(const char* inData) {
elem64 slot;
slot.i = ((int64)sc_ntohl(*(uint32*)inData) << 32) + (sc_ntohl(*(uint32*)(inData + 4)));
return slot.f;
}
struct sc_msg_iter {
const char *data, *rdpos, *endpos, *tags;
int size, count;
sc_msg_iter();
sc_msg_iter(int inSize, const char* inData);
void init(int inSize, const char* inData);
int64 gett(int64 defaultValue = 1);
int32 geti(int32 defaultValue = 0);
float32 getf(float32 defaultValue = 0.f);
float64 getd(float64 defaultValue = 0.f);
const char* gets(const char* defaultValue = 0);
int32* gets4(char* defaultValue = 0);
size_t getbsize();
void getb(char* outData, size_t inSize);
void skipb();
size_t remain() { return (size_t)(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, const char* inData) { init(inSize, inData); }
inline void sc_msg_iter::init(int inSize, const 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 int64 sc_msg_iter::gett(int64 defaultValue) {
int64 value;
if (remain() <= 0)
return defaultValue;
if (tags) {
if (tags[count] == 't') {
value = OSCtime(rdpos);
rdpos += sizeof(int64);
} else {
/* this is dangerous, as rdpos is not
advanced accordingly while count++ takes
place */
value = defaultValue;
}
} else {
value = OSCtime(rdpos);
rdpos += sizeof(int64);
}
count++;
return value;
}
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); */
value = defaultValue;
rdpos = OSCstrskip(rdpos);
} else if (tags[count] == 'b') {
value = defaultValue;
skipb();
} else {
/* this is dangerous, as rdpos is not
advanced accordingly while count++ takes
place */
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 = static_cast<float32>(OSCdouble(rdpos));
rdpos += sizeof(float64);
} else if (tags[count] == 'i') {
value = static_cast<float32>(OSCint(rdpos));
rdpos += sizeof(int32);
} else if (tags[count] == 's') {
/* value = atof(rdpos); */
value = defaultValue;
rdpos = OSCstrskip(rdpos);
} else if (tags[count] == 'b') {
value = defaultValue;
skipb();
} else {
/* this is dangerous, as rdpos is not
advanced accordingly while count++ takes
place */
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); */
value = defaultValue;
rdpos = OSCstrskip(rdpos);
} else if (tags[count] == 'b') {
value = defaultValue;
skipb();
} else {
/* this is dangerous, as rdpos is not
advanced accordingly while count++ takes
place */
value = defaultValue;
}
} else {
value = OSCdouble(rdpos);
rdpos += sizeof(float64);
}
count++;
return value;
}
inline const char* sc_msg_iter::gets(const char* defaultValue) {
const 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() {
size_t len = 0;
if (remain() <= 0)
return 0;
if (tags) {
if (tags[count] == 'b')
len = (size_t)OSCint(rdpos);
else if (tags[count] == 'm')
len = 4;
}
return len;
}
inline void sc_msg_iter::getb(char* outArray, size_t arraySize) {
size_t len = 0;
if (tags[count] == 'b') {
len = (size_t)OSCint(rdpos);
if (arraySize < len)
return;
rdpos += sizeof(int32);
} else if (tags[count] == 'm') {
len = 4;
if (arraySize < len)
return;
}
size_t len4 = (len + 3) & (size_t)-4;
memcpy(outArray, rdpos, arraySize);
rdpos += len4;
count++;
}
inline void sc_msg_iter::skipb() {
size_t len = 0;
if (tags[count] == 'b') {
len = (size_t)OSCint(rdpos);
rdpos += sizeof(int32);
} else if (tags[count] == 'm')
len = 4;
size_t len4 = (len + 3) & (size_t)-4;
rdpos += len4;
count++;
}
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