From da727875ac954b13ecb16521d255499511bb7424 Mon Sep 17 00:00:00 2001
From: mannol <eniz_vukovic@hotmail.com>
Date: Sun, 13 Oct 2013 16:16:47 +0200
Subject: tox A/V: RTP/MSI implementation

---
 toxrtp/toxrtp_helper.c | 209 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 209 insertions(+)
 create mode 100644 toxrtp/toxrtp_helper.c

(limited to 'toxrtp/toxrtp_helper.c')

diff --git a/toxrtp/toxrtp_helper.c b/toxrtp/toxrtp_helper.c
new file mode 100644
index 00000000..bb2dc56b
--- /dev/null
+++ b/toxrtp/toxrtp_helper.c
@@ -0,0 +1,209 @@
+/* rtp_helper.c
+*
+* Has some standard functions. !Red!
+*
+*
+* Copyright (C) 2013 Tox project All Rights Reserved.
+*
+* This file is part of Tox.
+*
+* Tox 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 3 of the License, or
+* (at your option) any later version.
+*
+* Tox 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 Tox. If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include "toxrtp_helper.h"
+#include "../toxcore/network.h"
+
+#include <arpa/inet.h> /* Fixes implicit function warning. */
+#include <assert.h>
+
+#ifdef WIN
+#include <windows.h>
+#endif /* WIN */
+
+
+static int _seed = 0; /* Not initiated */
+
+int t_setipport ( const char* _ip, unsigned short _port, void* _dest )
+{
+    assert(_dest);
+
+    IP_Port* _dest_c = ( IP_Port* ) _dest;
+    ip_init(&_dest_c->ip, 0);
+
+    IP_Port _ipv6_garbage;
+
+    if ( !addr_resolve(_ip, &_dest_c->ip, &_ipv6_garbage.ip) )
+        return FAILURE;
+
+    _dest_c->port = htons ( _port );
+
+    return SUCCESS;
+}
+
+uint32_t t_random ( uint32_t _max )
+{
+    if ( !_seed ) {
+        srand ( t_time() );
+        _seed++;
+    }
+
+    if ( _max <= 0 ) {
+        return ( unsigned ) rand();
+    } else {
+        return ( unsigned ) rand() % _max;
+    }
+}
+
+void t_memcpy ( uint8_t* _dest, const uint8_t* _source, size_t _size )
+{
+    /*
+     * Using countdown to zero method
+     * It's faster than for(_it = 0; _it < _size; _it++);
+     */
+    size_t _it = _size;
+
+    do {
+        _it--;
+        _dest[_it] = _source[_it];
+    } while ( _it );
+
+}
+
+uint8_t* t_memset ( uint8_t* _dest, uint8_t _valu, size_t _size )
+{
+    /*
+     * Again using countdown to zero method
+     */
+    size_t _it = _size;
+
+    do {
+        _it--;
+        _dest[_it] = _valu;
+    } while ( _it );
+
+    return _dest;
+}
+
+size_t t_memlen ( const uint8_t* _valu)
+{
+    const uint8_t* _it;
+    size_t _retu = 0;
+
+    for ( _it = _valu; *_it; ++_it ) ++_retu;
+
+    return _retu;
+}
+
+uint8_t* t_strallcpy ( const uint8_t* _source ) /* string alloc and copy */
+{
+    assert(_source);
+
+    size_t _length = t_memlen(_source) + 1; /* make space for null character */
+
+    uint8_t* _dest = calloc( sizeof ( uint8_t ), _length );
+    assert(_dest);
+
+    t_memcpy(_dest, _source, _length);
+
+    return _dest;
+}
+
+size_t t_strfind ( const uint8_t* _str, const uint8_t* _substr )
+{
+    size_t _pos = 0;
+    size_t _it, _delit = 0;
+
+    for ( _it = 0; _str[_it] != '\0'; _it++ ){
+        if ( _str[_it] == _substr[_delit] ){
+            _pos = _it;
+            while ( _str[_it] == _substr[_delit] && _str[_it] != '\0' ){
+                _it ++;
+                _delit++;
+
+                if ( _substr[_delit] == '\0' ){
+                    return _pos;
+                }
+            }
+            _delit = 0;
+            _pos = 0;
+        }
+    }
+    return _pos;
+}
+
+#ifdef WIN
+#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS)
+  #define DELTA_EPOCH_IN_MICROSECS  11644473600000000Ui64
+#else
+  #define DELTA_EPOCH_IN_MICROSECS  11644473600000000ULL
+#endif
+
+struct timezone
+{
+  int  tz_minuteswest; /* minutes W of Greenwich */
+  int  tz_dsttime;     /* type of dst correction */
+};
+
+int gettimeofday(struct timeval *tv, struct timezone *tz)
+{
+  FILETIME ft;
+  unsigned __int64 tmpres = 0;
+  static int tzflag;
+
+  if (NULL != tv)
+  {
+    GetSystemTimeAsFileTime(&ft);
+
+    tmpres |= ft.dwHighDateTime;
+    tmpres <<= 32;
+    tmpres |= ft.dwLowDateTime;
+
+    /*converting file time to unix epoch*/
+    tmpres -= DELTA_EPOCH_IN_MICROSECS;
+    tmpres /= 10;  /*convert into microseconds*/
+    tv->tv_sec = (long)(tmpres / 1000000UL);
+    tv->tv_usec = (long)(tmpres % 1000000UL);
+  }
+
+  if (NULL != tz)
+  {
+    if (!tzflag)
+    {
+      _tzset();
+      tzflag++;
+    }
+    tz->tz_minuteswest = _timezone / 60;
+    tz->tz_dsttime = _daylight;
+  }
+
+  return 0;
+}
+#endif /* WIN */
+
+
+uint64_t t_time()
+{
+    struct timeval _tv;
+    gettimeofday(&_tv, NULL);
+    uint64_t _retu_usec = _tv.tv_sec % 1000000; /* get 6 digits an leave space for 3 more */
+    _retu_usec = _retu_usec * 1000 + (_tv.tv_usec / 1000 );
+    return _retu_usec;
+}
-- 
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