1 files changed, 70 insertions, 0 deletions
diff --git a/scripts/external_libs/dpkt-1.8.6/dpkt/rtp.py b/scripts/external_libs/dpkt-1.8.6/dpkt/rtp.py
new file mode 100644
index 00000000..65fd0b98
--- /dev/null
+++ b/scripts/external_libs/dpkt-1.8.6/dpkt/rtp.py
@@ -0,0 +1,70 @@
+# $Id: rtp.py 23 2006-11-08 15:45:33Z dugsong $
+
+"""Real-Time Transport Protocol"""
+
+from dpkt import Packet
+
+# version 1100 0000 0000 0000 ! 0xC000  14
+# p       0010 0000 0000 0000 ! 0x2000  13
+# x       0001 0000 0000 0000 ! 0x1000  12
+# cc      0000 1111 0000 0000 ! 0x0F00   8
+# m       0000 0000 1000 0000 ! 0x0080   7
+# pt      0000 0000 0111 1111 ! 0x007F   0
+#
+
+_VERSION_MASK= 0xC000
+_P_MASK     = 0x2000
+_X_MASK     = 0x1000
+_CC_MASK    = 0x0F00
+_M_MASK     = 0x0080
+_PT_MASK    = 0x007F
+_VERSION_SHIFT=14
+_P_SHIFT    = 13
+_X_SHIFT    = 12
+_CC_SHIFT   = 8
+_M_SHIFT    = 7
+_PT_SHIFT   = 0
+
+VERSION = 2
+
+class RTP(Packet):
+    __hdr__ = (
+        ('_type', 'H',      0x8000),
+        ('seq',     'H',    0),
+        ('ts',      'I',    0),
+        ('ssrc',    'I',    0),
+    )
+    csrc = ''
+
+    def _get_version(self): return (self._type&_VERSION_MASK)>>_VERSION_SHIFT
+    def _set_version(self, ver):
+        self._type = (ver << _VERSION_SHIFT) | (self._type & ~_VERSION_MASK)
+    def _get_p(self): return (self._type & _P_MASK) >> _P_SHIFT
+    def _set_p(self, p): self._type = (p << _P_SHIFT) | (self._type & ~_P_MASK)
+    def _get_x(self): return (self._type & _X_MASK) >> _X_SHIFT
+    def _set_x(self, x): self._type = (x << _X_SHIFT) | (self._type & ~_X_MASK)
+    def _get_cc(self): return (self._type & _CC_MASK) >> _CC_SHIFT
+    def _set_cc(self, cc): self._type = (cc<<_CC_SHIFT)|(self._type&~_CC_MASK)
+    def _get_m(self): return (self._type & _M_MASK) >> _M_SHIFT
+    def _set_m(self, m): self._type = (m << _M_SHIFT) | (self._type & ~_M_MASK)
+    def _get_pt(self): return (self._type & _PT_MASK) >> _PT_SHIFT
+    def _set_pt(self, m): self._type = (m << _PT_SHIFT)|(self._type&~_PT_MASK)
+
+    version = property(_get_version, _set_version)
+    p = property(_get_p, _set_p)
+    x = property(_get_x, _set_x)
+    cc = property(_get_cc, _set_cc)
+    m = property(_get_m, _set_m)
+    pt = property(_get_pt, _set_pt)
+
+    def __len__(self):
+        return self.__hdr_len__ + len(self.csrc) + len(self.data)
+
+    def __str__(self):
+        return self.pack_hdr() + self.csrc + str(self.data)
+
+    def unpack(self, buf):
+        super(RTP, self).unpack(buf)
+        self.csrc = buf[self.__hdr_len__:self.__hdr_len__ + self.cc * 4]
+        self.data = buf[self.__hdr_len__ + self.cc * 4:]
+