Framework API now complete in its first iteration. So far with support for raw, opus and amrwb.

18 files changed, 2086 insertions, 16 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 594b257..15a201f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -5,10 +5,23 @@ liblrtp_la_LIBADD = $(SRTP_LIBS)
 liblrtp_la_CXXFLAGS = $(SRTP_CXXFLAGS)
 
 liblrtp_la_SOURCES = \
-	lrtp.cc
+	lrtp.cc \
+	rtp.cc \
+	srtp.cc \
+	rtp_profile_amrwb.cc \
+	rtp_profile_opus.cc \
+	rtp_profile_raw.cc \
+	asc2bin.cc
 
 include_HEADERS = \
-	lrtp.h
+	lrtp.h \
+	lrtp_profiles.h
 
-EXTRA_DIST =
+EXTRA_DIST = \
+	rtp_profile_amrwb.h \
+	rtp_profile_opus.h \
+	rtp_profile_raw.h \
+	rtp.h \
+	srtp.h \
+	asc2bin.h
 
diff --git a/src/asc2bin.cc b/src/asc2bin.cc
new file mode 100644
index 0000000..65efc31
--- /dev/null
+++ b/src/asc2bin.cc
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            asc2bin.cc
+ *
+ *  Thu Sep  5 11:12:50 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "asc2bin.h"
+
+static int asc2nibble(unsigned char c)
+{
+	if(c >= '0' && c <= '9') return c - '0';
+	if(c >= 'a' && c <= 'f') return c - 'a' + 0xa;
+	if(c >= 'A' && c <= 'F') return c - 'A' + 0xa;
+	return -1;
+}
+
+ssize_t asc2bin(char *raw, size_t rawsz, const char *hex, size_t hexlen)
+{
+  if(hexlen % 2 != 0) return -1;
+  if(rawsz < hexlen / 2) return -1;
+
+  unsigned char val;
+  int nibble;
+  size_t size = 0;
+
+  while(size < hexlen / 2) {
+    nibble = asc2nibble(hex[0]);
+    if(nibble == -1) return -1;
+    val = (nibble << 4);
+
+    nibble = asc2nibble(hex[1]);
+    if(nibble == -1) return -1;
+    val |= (nibble & 0xff);
+
+    *raw = val;
+    raw++;
+    size++;
+
+    hex += 2;
+  }
+
+  return (ssize_t)size;
+}
diff --git a/src/asc2bin.h b/src/asc2bin.h
new file mode 100644
index 0000000..42c3b54
--- /dev/null
+++ b/src/asc2bin.h
@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            asc2bin.h
+ *
+ *  Thu Sep  5 11:12:50 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __LRTP_ASC2BIN_H__
+#define __LRTP_ASC2BIN_H__
+
+#include <stdlib.h>
+
+#include "compat.h"
+
+/**
+ * asc2bin converts a hexadecimal string to a raw octet string.
+ * @param raw The char buffer that will contain the result.
+ * @param rawsz The size of the output buffer 'raw'. This size must be at
+ *  least hexlen / 2.
+ * @param hex The input hex string.
+ * @param hexlen The length of the hex string.
+ * @return The length of the resulting raw data. -1 on error.
+ * Errors are one of the following:
+ * - Hex string contains invalid hex character (0-9, a-f and A-F allowed).
+ * - rawsz is less than hexlen / 2.
+ * - hexlen is not a multiplum of 2 (odd hex string lengths not supported).
+ */
+ssize_t asc2bin(char *raw, size_t rawsz, const char *hex, size_t hexlen);
+
+#endif/*__LRTP_ASC2BIN_H__*/
diff --git a/src/compat.h b/src/compat.h
new file mode 100644
index 0000000..70a6286
--- /dev/null
+++ b/src/compat.h
@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            compat.h
+ *
+ *  Thu Sep  5 11:14:38 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __LRTP_COMPAT_H__
+#define __LRTP_COMPAT_H__
+
+#ifdef WIN32
+typedef signed int ssize_t;
+#else
+
+#endif
+
+#endif/*__LRTP_COMPAT_H__*/
diff --git a/src/lrtp.cc b/src/lrtp.cc
index 36da6f0..1f0b11d 100644
--- a/src/lrtp.cc
+++ b/src/lrtp.cc
@@ -27,20 +27,267 @@
  */
 #include "lrtp.h"
 
-#ifdef TEST_LRTP
-//Additional dependency files
-//deps:
-//Required cflags (autoconf vars may be used)
-//cflags:
-//Required link options (autoconf vars may be used)
-//libs:
-#include "test.h"
+#include <string>
+#include <string.h>
+#include <map>
+#include <stdio.h>
 
-TEST_BEGIN;
+#include "rtp_profile.h"
+#include "rtp_profile_amrwb.h"
+#include "rtp_profile_opus.h"
+#include "rtp_profile_raw.h"
 
-// TODO: Put some testcode here (see test.h for usable macros).
-TEST_TRUE(false, "No tests yet!");
+#include "srtp.h"
 
-TEST_END;
+#ifdef __cplusplus
+extern "C" {
+#endif
 
-#endif/*TEST_LRTP*/
+typedef std::map<csrc_t, lrtp_profile_t *> profile_map_t;
+
+struct lrtp_t {
+  SRTP *srtp;
+  csrc_t ssrc;
+  unsigned short seq;
+  profile_map_t profiles;
+
+  csrc_t next_csrc; // for frame iterator (see get_next_frame)
+
+  std::list<outputframe_t *> framelist;
+};
+
+typedef struct {
+  lrtp_profile_id_t id;
+  struct lrtp_profile_t *(*create)(struct lrtp_t *lrtp, unsigned int csrc,
+                                   va_list ap);
+} profile_class_t;
+
+static const profile_class_t registered_profiles[] = {
+  { PROFILE_AMRWB, profile_amrwb_create },
+  { PROFILE_OPUS, profile_opus_create },
+  { PROFILE_RAW, profile_raw_create },
+  { }
+};
+
+EXPORT
+struct lrtp_t *lrtp_init(const char *key, unsigned int ssrc)
+{
+  struct lrtp_t *lrtp = new struct lrtp_t;
+
+  lrtp->srtp = new SRTP(key, ssrc);
+  lrtp->ssrc = ssrc;
+  lrtp->seq = 0;
+
+  return lrtp;
+}
+
+EXPORT
+void lrtp_close(struct lrtp_t *lrtp)
+{
+  delete lrtp->srtp;
+  delete lrtp;
+}
+
+EXPORT
+struct lrtp_profile_t *lrtp_create_profile(struct lrtp_t *lrtp,
+                                           lrtp_profile_id_t profile_id,
+                                           unsigned int csrc, ...)
+{
+  struct lrtp_profile_t *profile = NULL;
+
+  if(lrtp->profiles.find(csrc) != lrtp->profiles.end()) {
+    // TODO: CSRC already active
+    printf("ERROR: CSRC already active\n");
+    return NULL;
+  }
+
+  va_list ap;
+  va_start(ap, csrc);
+
+  const profile_class_t *p = registered_profiles;
+  while(p->create) {
+    if(p->id == profile_id) {
+      profile = p->create(lrtp, csrc, ap);
+      profile->process_finished = NULL; // TODO: Figure out a way to set non-profile specific options.
+      break;
+    }
+    p++;
+  }
+
+  va_end(ap);
+
+  if(profile) {
+    profile->id = PROFILE_RAW;
+    profile->lrtp = lrtp;
+    profile->csrc = csrc;
+
+    lrtp->profiles[csrc] = profile;
+  }
+
+  return profile;
+}
+
+EXPORT
+void lrtp_destroy_profile(struct lrtp_t *lrtp, unsigned int csrc)
+{
+  if(lrtp->profiles.find(csrc) == lrtp->profiles.end()) {
+    // TODO: CSRC not found
+    printf("ERROR: CSRC not found\n");
+    return;
+  }
+
+  struct lrtp_profile_t *profile = lrtp->profiles[csrc];
+  profile->destroy(profile);
+  lrtp->profiles.erase(csrc);
+}
+
+EXPORT
+int lrtp_enqueue_frame(struct lrtp_profile_t *profile,
+                       const char *data, size_t size)
+{
+  inputframe_t *frame = new inputframe_t();
+  frame->data = data;
+  frame->size = size;
+  frame->offset = 0;
+
+  profile->framelist.push_back(frame);
+
+  return 0;
+}
+
+static lrtp_profile_t *get_next_profile(struct lrtp_t *lrtp)
+{
+  // TODO: This function /should/ return the next profile containing frame data,
+  // not just the next profile in the list (regardless of it's framequeue being
+  // empty!).
+
+  if(lrtp->profiles.size() == 0) return NULL; // No profiles
+
+  profile_map_t::iterator i = lrtp->profiles.find(lrtp->next_csrc);
+
+  if(i == lrtp->profiles.end()) {
+    i = lrtp->profiles.begin();
+  }
+
+  struct lrtp_profile_t *profile = i->second;
+
+  i++;
+
+  if(i == lrtp->profiles.end()) {
+    i = lrtp->profiles.begin();
+  }
+  
+  lrtp->next_csrc = i->second->csrc;
+
+  return profile;
+}
+
+EXPORT
+int lrtp_pack(struct lrtp_t *lrtp, char *packet, size_t maxsize)
+{
+  //if(!profile) return PACK_MISSING_PROFILE;
+
+  // TODO: Check profile magic word
+
+  struct lrtp_profile_t *profile = get_next_profile(lrtp);
+
+  if(profile == NULL || profile->framelist.size() == 0) return 0;
+
+  inputframe_t *frame = profile->framelist.front();
+
+  RTP rtp;
+  rtp.setSSrc(lrtp->ssrc);
+  //rtp.setTimestamp(ts); // TODO...
+  rtp.setSeq(lrtp->seq);
+  rtp.addCSrc(profile->csrc);
+
+  int ret = profile->pack(profile,
+                          frame->data + frame->offset,
+                          frame->size - frame->offset,
+                          rtp);
+
+  if(ret < 0) return ret;
+
+  frame->offset += ret;
+
+  if(frame->size == frame->offset) {
+    if(profile->process_finished) {
+      profile->process_finished(profile, frame->data,
+                                profile->process_finished_ptr);
+    }
+
+    profile->framelist.pop_front();
+    delete frame;
+  }
+
+  if(rtp.isValid()) {
+    size_t size = rtp.packet(packet, maxsize);
+    size = lrtp->srtp->encrypt(packet, size);
+    lrtp->seq++;
+    return size;
+  }
+
+  return 0;
+}
+
+EXPORT
+int lrtp_dequeue_frame(struct lrtp_t *lrtp,
+                       char *frame, size_t maxsize,
+                       unsigned int *csrc, unsigned int *ts)
+{
+  if(lrtp->framelist.size() == 0) return 0;
+
+  outputframe_t *f = lrtp->framelist.front();
+
+  if(f->size > maxsize) {
+    printf("Buffer is too small\n");
+    return -1; // Buffer too small.
+  }
+
+  memcpy(frame, f->data, f->size);
+
+  lrtp->framelist.pop_front();
+
+  free(f->data);
+  delete f;
+
+  return f->size;
+}
+
+EXPORT
+int lrtp_unpack(struct lrtp_t *lrtp, const char *packet, size_t size)
+{
+  if(!lrtp) return UNPACK_MISSING_HANDLE;
+
+  // TODO: Check lrtp magic word
+
+  char pkg[16*1024];
+  memcpy(pkg, packet, size);
+
+  size = lrtp->srtp->decrypt(pkg, size);
+
+  RTP rtp;
+  rtp.fromPacket(pkg, size);
+  std::list<csrc_t> csrcs = rtp.getCSrcs();
+  if(csrcs.size() == 0) return UNPACK_MISSING_CSRC;
+  if(csrcs.size() > 1) return UNPACK_TOO_MANY_CSRCS;
+
+  csrc_t csrc = *csrcs.begin();
+
+  struct lrtp_profile_t *profile = NULL;
+  if(lrtp->profiles.find(csrc) == lrtp->profiles.end()) {
+    return UNPACK_MISSING_PROFILE;
+  }
+
+  profile = lrtp->profiles[csrc];
+
+  std::list<outputframe_t*> framelist;
+  int ret = profile->unpack(profile, rtp, framelist);
+  lrtp->framelist.splice(lrtp->framelist.end(), framelist);
+
+  return ret;
+}
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/src/lrtp.h b/src/lrtp.h
index 7428997..ce6b0e2 100644
--- a/src/lrtp.h
+++ b/src/lrtp.h
@@ -27,4 +27,108 @@
  */
 #ifndef __LRTP_LRTP_H__
 #define __LRTP_LRTP_H__
+
+#ifdef WIN32
+#ifdef BUILD_DLL
+/* DLL export */
+#define EXPORT __declspec(dllexport)
+#else
+/* EXE import */
+#define EXPORT __declspec(dllimport)
+#endif
+#else
+#define EXPORT
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+
+#include "lrtp_profiles.h"
+
+struct lrtp_t;
+
+EXPORT
+struct lrtp_t *lrtp_init(const char *key, unsigned int ssrc);
+
+EXPORT
+void lrtp_close(struct lrtp_t *lrtp);
+
+struct lrtp_profile_t;
+
+/**
+ * @param ...
+ */
+EXPORT
+struct lrtp_profile_t *lrtp_create_profile(struct lrtp_t *lrtp,
+                                           lrtp_profile_id_t profile_id,
+                                           unsigned int csrc, ...);
+
+EXPORT
+void lrtp_destroy_profile(struct lrtp_t *lrtp, unsigned int csrc);
+
+typedef enum {
+  // Errors:
+  PACK_ERROR            = 1000, // Error...
+  PACK_BUFFER_TOO_SMALL = 1001, // Packet buffer needs to be bigger.
+  PACK_UNKNOWN_PROFILE  = 1002, // Illegal profile id
+  PACK_MISSING_PROFILE  = 1003, // Profile pointer NULL or not valid.
+} lrtp_pack_status_t;
+
+/**
+ * Enqueue a media frame for the packetiser.
+ * @param profile A pointer to profile needed for processing the frame type.
+ * @param framedate The frame data that needs encapsulation.
+ * @param framesize The size in bytes of the frame data.
+ * @return 0 on success, or a negative error code on error.
+ * NOTE: The frame pointer cannot be freed or overwritten until all frame data
+ * has been handled by lrtp_pack(). Either call lrtp_pack() until it returns 0
+ * after each call to lrtp_enqueue_frame or use the
+ * OPTION_SET_PROCESS_FINISHED_HANDLER option to set a process finished handler.
+ * See lrtp_profiles.h for further details.
+ */
+EXPORT
+int lrtp_enqueue_frame(struct lrtp_profile_t *profile,
+                       const char *framedate, size_t framesize);
+
+/**
+ * Handle frame data from the frame queue and create at most a single sRTP
+ * packet.
+ * @param lrtp The lrtp context handle.
+ * @param packet A char buffer which will contain the resulting RTP data.
+ * @param maxsize the maximum number of bytes that can be contained within
+ *  packet.
+ * @return Returns the number of bytes written in packet, if any (can be zero
+ *  if no packet is available) or a negative error code on error.
+ */
+EXPORT int lrtp_pack(struct lrtp_t *lrtp, char *packet, size_t maxsize);
+
+typedef enum {
+  // Errors:
+  UNPACK_ERROR            = 1000, // Error...
+  UNPACK_BUFFER_TOO_SMALL = 1001, // Frame buffer needs to be bigger.
+  UNPACK_MISSING_HANDLE   = 1002, // Handle pointer NULL or not valid.
+  UNPACK_MISSING_CSRC     = 1003, // Exactly one csrc must be present.
+  UNPACK_TOO_MANY_CSRCS   = 1004, // Exactly one csrc must be present.
+  UNPACK_MISSING_PROFILE  = 1005, // CSrc from packet could not be connected with a preofile..
+} lrtp_unpack_status_t;
+
+/**
+ */
+EXPORT
+int lrtp_dequeue_frame(struct lrtp_t *lrtp,
+                       char *frame, size_t maxsize,
+                       unsigned int *csrc, unsigned int *ts);
+
+/**
+ */
+EXPORT
+int lrtp_unpack(struct lrtp_t *lrtp, const char *packet, size_t size);
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif/*__LRTP_LRTP_H__*/
diff --git a/src/lrtp_profiles.h b/src/lrtp_profiles.h
new file mode 100644
index 0000000..a3d6db1
--- /dev/null
+++ b/src/lrtp_profiles.h
@@ -0,0 +1,72 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            lrtp_profiles.h
+ *
+ *  Mon Sep  9 13:29:04 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __LRTP_LRTP_PROFILES_H__
+#define __LRTP_LRTP_PROFILES_H__
+
+// List of known RTP profiles:
+typedef enum {
+  PROFILE_RAW    = 0, // Dummy profile, for test
+  PROFILE_L16    = 1,
+  PROFILE_AMRWB  = 2,
+  PROFILE_OPUS   = 3,
+  PROFILE_JPEG   = 4,
+} lrtp_profile_id_t;
+
+// No more options.
+#define OPTION_END 0
+
+// Options relating to all profiles:
+/**
+ * This option is used to set the custom processFinishedHandler
+ * It takes two arguments, the first being a function pointer of the type:
+ *  void (*process_finished)(struct lrtp_profile_t *profile,
+ *                           const char *frame, size_t framesize,
+ *                           void *ptr);
+ *
+ * the second argument is the value of ptr, passed on to the callback function.
+ * See rtp_profile.h for further details.
+ */
+#define OPTION_SET_PROCESS_FINISHED_HANDLER 1000
+
+// Raw profile options:
+#define OPTION_RAW_PKG_SIZE 2000 // Integer argument.
+                                 // Number of bytes per rtp packet.
+                                 // Default is 100
+
+// AMR-WB profile options:
+#define OPTION_AMRWB_FRAME_TYPE_INDEX 3000 // Integer argument.
+                                           // Frame type index according to
+                                           // Table 1a in "3GPP TS 26.201"
+                                           // Default is 8: AMR-WB 23.85 kbit/s
+
+// Opus profile options:
+// None
+
+// Jpeg profile options:
+
+#endif/*__LRTP_LRTP_PROFILES_H__*/
diff --git a/src/rtp.cc b/src/rtp.cc
new file mode 100644
index 0000000..28a9203
--- /dev/null
+++ b/src/rtp.cc
@@ -0,0 +1,262 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            rtp.cc
+ *
+ *  Mon Sep  2 15:24:09 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "rtp.h"
+
+#include <string.h>
+#include <arpa/inet.h>
+#include <stdio.h>
+
+RTP::RTP()
+{
+  memset(&header, 0, sizeof(header));
+  pads = 0;
+
+  header.version = 2;
+
+  memset(pload, 0, sizeof(pload));
+  pload_size = 0;
+
+  is_valid = false;
+}
+
+void RTP::setPadding(unsigned char padding)
+{
+  if(padding == 0) {
+    header.p = 0;
+    pads = 0;
+    return;
+  }
+  header.p = 1;
+  pads = padding;
+}
+
+unsigned char RTP::padding() const
+{
+  return pads;
+}
+
+void RTP::setPayloadType(unsigned char pt)
+{
+  header.pt = pt;
+}
+
+unsigned char RTP::payloadType() const
+{
+  return header.pt;
+}
+
+void RTP::setMarker(bool bit)
+{
+  header.m = bit?1:0;
+}
+
+bool RTP::marker() const
+{
+  return header.m;
+}
+
+void RTP::setSeq(uint16_t seq)
+{
+  header.seq = htons(seq);
+}
+
+uint16_t RTP::seq() const
+{
+  return ntohs(header.seq);
+}
+
+void RTP::setTimestamp(uint32_t ts)
+{
+  header.ts = htonl(ts);
+}
+
+uint32_t RTP::timestamp() const
+{
+  return ntohl(header.ts);
+}
+
+void RTP::setSSrc(uint32_t ssrc)
+{
+  header.ssrc = htonl(ssrc);
+}
+
+uint32_t RTP::SSrc() const
+{
+  return ntohl(header.ssrc);
+}
+
+void RTP::addCSrc(csrc_t csrc)
+{
+  if(csrcs.size() == 15) {
+    printf("ERROR: Too many CSRCs (max 15).\n");
+    return; // TODO: Report error!
+  }
+  csrcs.push_back(csrc);
+  header.cc = csrcs.size();
+}
+
+std::list<csrc_t> RTP::getCSrcs() const
+{
+  return csrcs;
+}
+
+void RTP::removeCSrc(csrc_t csrc)
+{
+  csrcs.remove(csrc);
+  header.cc = csrcs.size();
+}
+
+void RTP::clearCSrcs()
+{
+  csrcs.clear();
+  header.cc = csrcs.size();
+}
+
+void RTP::setPayload(const char *pl, size_t size)
+{
+  if(size > MAX_RTP_PAYLOAD_SIZE) {
+    printf("ERROR: Payload is too big for RTP pakcet.\n");
+    // TODO: Report error.
+  }
+
+  memcpy(pload, pl, size);
+  pload_size = size;
+
+  setValid(true);
+}
+
+size_t RTP::payload(char *payload, size_t maxsize) const
+{
+  if(pload_size > maxsize) {
+    printf("ERROR: Payload is too big for the buffer.\n");
+    return 0; // TODO: Report error.
+  }
+
+  memcpy(payload, pload, pload_size);
+  return pload_size;
+}
+
+size_t RTP::payloadSize() const
+{
+  return pload_size;
+}
+
+const char *RTP::payloadData() const
+{
+  return pload;
+}
+
+size_t RTP::packet(char *packet, size_t maxsize) const
+{
+  memset(packet, 0, maxsize);
+
+  size_t total_packet_size =
+    sizeof(header) + sizeof(csrc_t) * csrcs.size() + pload_size + pads;
+
+  if(total_packet_size > maxsize) {
+    printf("ERROR: Packet is too big for the buffer.\n");
+    return 0; // TODO: Report error.
+  }
+
+  char *p = packet;
+
+  // Copy header fields.
+  memcpy(p, &header, sizeof(header));
+
+  p += sizeof(header);
+
+  // Write CSrcs to packet
+  csrc_t *pcsrc = (csrc_t*)p;
+  std::list<csrc_t>::const_iterator i = csrcs.begin();
+  while(i != csrcs.end()) {
+    *pcsrc++ = htonl(*i);
+    i++;
+  }
+
+  p += sizeof(csrc_t) * csrcs.size();
+
+  // TODO: Insert header extension here (if it exists)
+
+  // Write payload to body.
+  memcpy(p, pload, pload_size);
+
+  p += pload_size;
+
+  if(pads) {
+    for(int i = 0; i < pads - 1; i++) *p++ = '\0';
+    *p++ = (unsigned char)pads;
+  }
+
+  return p - packet;
+}
+
+void RTP::fromPacket(const char *packet, size_t size)
+{
+  rtp_header_t *hdr =  (rtp_header_t *)packet;
+
+  if(hdr->version != 2) {
+    printf("ERROR: Wrong RTP header version.\n");
+    return; // TODO: Invalid RTP version error
+  }
+
+  setMarker(hdr->m);
+  setPayloadType(hdr->pt);
+  setSeq(ntohs(hdr->seq));
+  setTimestamp(ntohl(hdr->ts));
+  setSSrc(ntohl(hdr->ssrc));
+
+  if(hdr->p) {
+    setPadding(*(unsigned char*)&packet[size - 1]);
+  }
+
+  // TODO: Use header extension flag: hdr->x
+
+  // Read out CSrc's:
+  csrc_t *pcsrc = (csrc_t*)(packet + sizeof(rtp_header_t));
+  for(int i = 0; i < hdr->cc; i++) {
+    addCSrc(ntohl(*pcsrc));
+    pcsrc++;
+  }
+
+  // Read out payload
+  size_t plsz = size - (sizeof(rtp_header_t) + hdr->cc*sizeof(csrc_t) + pads);
+  char *pl = (char*)pcsrc;
+  setPayload(pl, plsz);
+
+  setValid(true);
+}
+
+bool RTP::isValid()
+{
+  return is_valid;
+}
+
+void RTP::setValid(bool valid)
+{
+  is_valid = valid;
+}
diff --git a/src/rtp.h b/src/rtp.h
new file mode 100644
index 0000000..b7aa8b4
--- /dev/null
+++ b/src/rtp.h
@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            rtp.h
+ *
+ *  Mon Sep  2 15:24:09 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __LRTP_RTP_H__
+#define __LRTP_RTP_H__
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <list>
+
+typedef struct {
+  uint16_t cc:4;	    // CSRC count
+  uint16_t x:1;	      // Header extension flag
+  uint16_t p:1;	      // Padding flag
+  uint16_t version:2; // Protocol version
+
+  uint16_t m:1;	      // Marker bit
+  uint16_t pt:7;	    // Payload type
+
+  uint16_t seq;		    // Sequence number
+
+  uint32_t ts;		    // Timestamp
+  uint32_t ssrc;	    // Synchronization source
+} rtp_header_t;
+
+#define MAX_RTP_PACKET_SIZE (16 * 1024)
+#define MAX_RTP_PAYLOAD_SIZE ( MAX_RTP_PACKET_SIZE - sizeof(rtp_header_t) )
+
+typedef struct {
+  rtp_header_t header;
+  char body[MAX_RTP_PAYLOAD_SIZE];
+} rtp_t;
+
+typedef unsigned int csrc_t;
+
+class RTP {
+public:
+  RTP();
+
+  /* // Not implemented
+  void setHeaderExtension();
+  int headerExtension();
+  */
+
+  void setPadding(unsigned char padding);
+  unsigned char padding() const;
+
+  void setPayloadType(unsigned char pt);
+  unsigned char payloadType() const;
+
+  void setMarker(bool bit);
+  bool marker() const;
+
+  void setSeq(uint16_t seq);
+  uint16_t seq() const;
+
+  void setTimestamp(uint32_t seq);
+  uint32_t timestamp() const;
+
+  void setSSrc(uint32_t ssrc);
+  uint32_t SSrc() const;
+
+  void addCSrc(csrc_t csrc);
+  std::list<csrc_t> getCSrcs() const;
+  void removeCSrc(csrc_t csrc);
+  void clearCSrcs();
+
+  void setPayload(const char *payload, size_t size);
+  size_t payload(char *payload, size_t maxsize) const;
+  size_t payloadSize() const;
+  const char *payloadData() const;
+
+  size_t packet(char *packet, size_t maxsize) const;
+  void fromPacket(const char *packet, size_t size);
+
+  bool isValid();
+  void setValid(bool valid);
+
+private:  
+  std::list<csrc_t> csrcs;
+
+  rtp_header_t header;
+
+  unsigned char pads;
+
+  char pload[MAX_RTP_PAYLOAD_SIZE];
+  size_t pload_size;
+
+  bool is_valid;
+};
+
+#endif/*__LRTP_RTP_H__*/
diff --git a/src/rtp_profile.h b/src/rtp_profile.h
new file mode 100644
index 0000000..96dc9eb
--- /dev/null
+++ b/src/rtp_profile.h
@@ -0,0 +1,86 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            rtp_profile.h
+ *
+ *  Wed Sep 11 08:40:11 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __LRTP_RTP_PROFILE_H__
+#define __LRTP_RTP_PROFILE_H__
+
+#include <stdint.h>
+#include <list>
+
+#include "rtp.h"
+
+struct lrtp_t;
+
+typedef struct {
+  const char *data;
+  size_t size;
+  size_t offset;
+} inputframe_t;
+
+typedef struct {
+  char *data;
+  size_t size;
+
+  csrc_t csrc;
+  unsigned int ts;
+  // TODO: Add other metadata ...
+
+} outputframe_t;
+
+struct lrtp_profile_t {
+  struct lrtp_t *lrtp;
+  lrtp_profile_id_t id;
+  unsigned int csrc;
+
+  // Frames ready for packing with this profile:
+  std::list<inputframe_t *> framelist;
+
+  //  Profile functions:
+  /**
+   * Custom callback used when a frame has been processed.
+   * This could be the place to call free(3), decrease a reference counter or
+   * re-add to a memory pool.
+   * Use ptr to pass custom parameters to the callback.
+   * If NULL, no call is performed.
+   */
+  void (*process_finished)(struct lrtp_profile_t *profile,
+                           const char *frame, void *ptr);
+  void *process_finished_ptr;
+
+  int (*pack)(struct lrtp_profile_t *profile,
+              const char *frame, size_t framesize,
+              RTP &rtp);
+
+  int (*unpack)(struct lrtp_profile_t *profile,
+                const RTP &rtp,
+                std::list<outputframe_t *> &framelist);
+
+  void (*destroy)(struct lrtp_profile_t *profile);
+
+};
+
+#endif/*__LRTP_RTP_PROFILE_H__*/
diff --git a/src/rtp_profile_amrwb.cc b/src/rtp_profile_amrwb.cc
new file mode 100644
index 0000000..f83b3c3
--- /dev/null
+++ b/src/rtp_profile_amrwb.cc
@@ -0,0 +1,307 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            rtp_profile_amrwb.cc
+ *
+ *  Wed Oct  2 14:43:05 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "rtp_profile_amrwb.h"
+
+#include "rtp_profile.h"
+#include "rtp.h"
+
+#include <stdio.h>
+#include <string.h>
+
+/*
+The timestamp clock frequency is the same as the sampling frequency, so the
+timestamp unit is in samples.
+
+The duration of one speech frame-block is 20 ms for both AMR and AMR-WB.  For
+AMR, the sampling frequency is 8 kHz, corresponding to 160 encoded speech
+samples per frame from each channel.  For AMR-WB, the sampling frequency is
+16 kHz, corresponding to 320 samples per frame from each channel.  Thus, the
+timestamp is increased by 160 for AMR and 320 for AMR-WB for each consecutive
+frame-block.
+
+QUESTION: Should we use 16kHz or 19351Hz?
+ANSWER: The encoder and decoder respectively should use 19531Hz, the rest of
+the system can assume 16kHz without loss of quality.
+ */
+
+struct lrtp_profile_amrwb_t {
+  struct lrtp_profile_t profile; // 'Inherit' lrtp_profile_t
+
+  int frame_type_index;
+};
+
+// Frame sizes based on frame type index:
+static const int wb_frame_size[16] = {
+  17, 23, 32, 36, 40, 46, 50, 58,
+  60, 5, -1, -1, -1, -1, -1, 0
+};
+
+/*
+ *   0 1 2 3 4 5 6 7
+ *  +-+-+-+-+-+-+-+-+
+ *  |F|  FT   |Q|P|P|
+ *  +-+-+-+-+-+-+-+-+
+ */
+
+/*
+ *  F (1 bit): If set to 1, indicates that this frame is followed by
+ *     another speech frame in this payload; if set to 0, indicates that
+ *     this frame is the last frame in this payload.
+ */
+static int is_last_frame(const char *frame_header)
+{
+  return ( (*frame_header >> 7) & 0x1 ) == 0;
+}
+
+static void set_is_last_frame(char *frame_header, int last)
+{
+  last = 1 - last; // Invert 'last': 0 means last, 1 means more
+  *frame_header = (*frame_header & 0x7f) | ( (last & 0x1) << 7);
+}
+
+/*
+ * FT (4 bits): Frame type index, indicating either the AMR or AMR-WB
+ *     speech coding mode or comfort noise (SID) mode of the
+ *     corresponding frame carried in this payload.
+ */
+static int frame_type_index(const char *frame_header)
+{
+  return (*frame_header >> 3) & 0xf;
+}
+
+static int set_frame_type_index(char *frame_header, int index)
+{
+  *frame_header = (*frame_header & 0x87) | ( (index & 0xf) << 3);
+}
+
+/*
+ *  Q (1 bit): Frame quality indicator.  If set to 0, indicates the
+ *     corresponding frame is severely damaged and the receiver should
+ *     set the RX_TYPE (see [6]) to either SPEECH_BAD or SID_BAD
+ *     depending on the frame type (FT).
+ */
+static int quality_indicator(const char *frame_header)
+{
+  return (*frame_header >> 2) & 0x1;
+}
+
+static int set_quality_indicator(char *frame_header, int quality)
+{
+  *frame_header = (*frame_header & 0xf8) | ( (quality & 0x1) << 2);
+}
+
+
+// http://tools.ietf.org/html/rfc3267#section-4.4
+int profile_amrwb_pack(struct lrtp_profile_t *profile,
+                       const char *input, size_t inputsize,
+                       RTP &rtp)
+{
+  // NOTE: This implementation does not support frame interleaving...
+
+  struct lrtp_profile_amrwb_t *p = (struct lrtp_profile_amrwb_t *)profile;
+
+  size_t frameheader_size = 1;
+  size_t cmr_size = 1;
+
+  // Frame size based on frame_type_index,
+  size_t frame_size = wb_frame_size[p->frame_type_index];
+
+  // This is the maximum number of frames we have room for in a single RTP
+  // payload.
+  size_t max_num_frames =
+    (MAX_RTP_PAYLOAD_SIZE - cmr_size) / (frame_size + frameheader_size);
+
+  size_t cpsz = inputsize;
+
+  printf("cpsz: %d\n", cpsz);
+
+  size_t num_frames = cpsz / frame_size;
+
+  if(num_frames == 0) {
+    printf("Garbage at the end of the buffer\n");
+    rtp.setValid(false);
+    return -1;
+  }
+
+  if(num_frames > max_num_frames) num_frames = max_num_frames;
+
+  char *payload = (char*)malloc(MAX_RTP_PAYLOAD_SIZE);
+
+  /*   0                   1
+   *   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
+   *  +-+-+-+-+-+-+-+-+- - - - - - - -
+   *  |  CMR  |R|R|R|R|  ILL  |  ILP  |
+   *  +-+-+-+-+-+-+-+-+- - - - - - - -
+   */
+  // If a terminal has no preference in which mode to receive, it SHOULD set
+  // CMR=15 in all its outbound payloads.
+  char *CMR = payload;
+  *CMR = 15;
+ 
+  // The ILL and ILP fields are not used (see note above).
+
+  char *frame_header = CMR + cmr_size;
+  for(size_t i = 0; i < num_frames; i++) {
+    // 0 if this is the last frame.
+    set_is_last_frame(frame_header, i == (num_frames - 1) );
+
+    // Frame type index (4 bits):
+    set_frame_type_index(frame_header, p->frame_type_index);
+
+    // Frame quality indicator (1 bit): Set to 0 to indicate damaged frame.
+    set_quality_indicator(frame_header, 1);
+
+    frame_header += frameheader_size;
+  }
+
+  char *frame_data = frame_header;
+  
+  size_t payload_size = cmr_size;
+  const char *frame_offset = input;
+  for(size_t i = 0; i < num_frames; i++) {
+    memcpy(frame_data, frame_offset, frame_size);
+    frame_data += frame_size;
+    frame_offset += frame_size;
+    payload_size += frameheader_size + frame_size;
+  }  
+
+  //size_t payload_size = cmr_size + num_frames*(frame_size + frameheader_size);
+  rtp.setPayload(payload, payload_size);
+  rtp.setValid(true);
+
+  printf("payload (pack):\n");
+  for(int i = 0; i < payload_size; i++) {
+    printf("%02x ", (unsigned char)payload[i]);
+  }
+  printf("\n");
+
+  free(payload);
+
+  return cpsz;
+}
+
+int profile_amrwb_unpack(struct lrtp_profile_t *profile,
+                         const RTP &rtp,
+                         std::list<outputframe_t *> &framelist)
+{
+  struct lrtp_profile_amrwb_t *p = (struct lrtp_profile_amrwb_t *)profile;
+
+  size_t size = rtp.payloadSize();
+  const char *payload = rtp.payloadData();
+
+  printf("---------------------------------------- New packet:\n");
+  printf("payload (unpack):\n");
+  for(int i = 0; i < size; i++) {
+    printf("%02x ", (unsigned char)payload[i]);
+  }
+  printf("\n");
+
+  // Read CMR:
+  size_t cmr_size = 1;
+  char CMR = payload[0];
+  if(CMR != 15) {
+    printf("CMR not 15\n");
+    return UNPACK_ERROR;
+  }
+
+  // TODO: What to do if there are 0 frames (and therefore no header to set the
+  // 'last frame' bit in....)
+
+  // Read ToC:
+  size_t frameheader_size = 1;
+  const char *frame_toc;
+  frame_toc = payload + cmr_size;
+
+  size_t frame_num = 0;
+  const char *frame_data = frame_toc;
+  while(!is_last_frame(frame_data)) {
+    frame_num++;
+    frame_data += frameheader_size;
+  }
+  frame_num++;
+  frame_data += frameheader_size;
+
+  while(frame_num) {
+    size_t frame_size_idx = frame_type_index(frame_toc);
+    size_t frame_size = wb_frame_size[frame_size_idx];
+
+    outputframe_t *of = new outputframe_t();
+    of->size = frame_size;
+    char *buf = (char*)malloc(of->size);
+    memcpy(buf, frame_data, frame_size);
+    of->data = buf;
+
+    framelist.push_back(of);
+
+    if(is_last_frame(frame_toc)) return 0;
+
+    frame_toc += frameheader_size;
+    frame_data += frame_size;
+
+    frame_num--;
+  }
+
+  printf("Error, missed the last_frame bit\n");
+
+  return 1; // Error, missed the last_frame bit
+}
+
+void profile_amrwb_destroy(struct lrtp_profile_t *profile)
+{
+  struct lrtp_profile_amrwb_t *p = (struct lrtp_profile_amrwb_t *)profile;
+  delete p;
+}
+
+struct lrtp_profile_t *profile_amrwb_create(struct lrtp_t *lrtp,
+                                            unsigned int csrc,
+                                            va_list vp)
+{
+  struct lrtp_profile_amrwb_t *p = new struct lrtp_profile_amrwb_t;
+
+  p->profile.pack = profile_amrwb_pack;
+  p->profile.unpack = profile_amrwb_unpack;
+  p->profile.destroy = profile_amrwb_destroy;
+
+  p->frame_type_index = 8; // Default: AMR-WB 23.85 kbit/s
+
+  while(true) {
+    int type = va_arg(vp, int);
+    if(type == OPTION_END) break;
+
+    switch(type) {
+    case OPTION_AMRWB_FRAME_TYPE_INDEX:
+      p->frame_type_index = va_arg(vp, int);
+      break;
+    default:
+      // TODO: Unknown arg type
+      break;
+    }
+  }
+
+  return (struct lrtp_profile_t *)p;
+}
diff --git a/src/rtp_profile_amrwb.h b/src/rtp_profile_amrwb.h
new file mode 100644
index 0000000..38b20c1
--- /dev/null
+++ b/src/rtp_profile_amrwb.h
@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            rtp_profile_amrwb.h
+ *
+ *  Wed Oct  2 14:43:05 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __LRTP_RTP_PROFILE_AMRWB_H__
+#define __LRTP_RTP_PROFILE_AMRWB_H__
+
+#include <stdarg.h>
+
+#include "lrtp.h"
+
+struct lrtp_profile_t *profile_amrwb_create(struct lrtp_t *lrtp,
+                                            unsigned int csrc,
+                                            va_list ap);
+
+#endif/*__LRTP_RTP_PROFILE_AMRWB_H__*/
diff --git a/src/rtp_profile_opus.cc b/src/rtp_profile_opus.cc
new file mode 100644
index 0000000..102d175
--- /dev/null
+++ b/src/rtp_profile_opus.cc
@@ -0,0 +1,188 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            rtp_profile_opus.cc
+ *
+ *  Tue Sep 10 13:53:24 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Part of this code is an adaptation of the GStreamer RTP profile code for Celt
+ * by Wim Taymans <wim.taymans@gmail.com>
+ * The original code can be found in the gst-plugins-good package version 1.1.3:
+ * http://gstreamer.freedesktop.org/src/gst-plugins-good
+ */
+#include "rtp_profile_opus.h"
+
+/*
+         +--------------+----------------+-----------+----------+
+         | Abbreviation |      Name      | Bandwidth | Sampling |
+         +--------------+----------------+-----------+----------+
+         |      nb      |   Narrowband   |  0 - 4000 |   8000   |
+         |              |                |           |          |
+         |      mb      |   Mediumband   |  0 - 6000 |   12000  |
+         |              |                |           |          |
+         |      wb      |    Wideband    |  0 - 8000 |   16000  |
+         |              |                |           |          |
+         |      swb     | Super-wideband | 0 - 12000 |   24000  |
+         |              |                |           |          |
+         |      fb      |    Fullband    | 0 - 20000 |   48000  |
+         +--------------+----------------+-----------+----------+
+
+                          Audio bandwidth naming
+
+                                  Table 1
+*/
+/*
+Recommended Bitrate
+
+   For a frame size of 20 ms, these are the bitrate "sweet spots" for
+   Opus in various configurations:
+   o  8-12 kb/s for NB speech,
+   o  16-20 kb/s for WB speech,
+   o  28-40 kb/s for FB speech,
+   o  48-64 kb/s for FB mono music, and
+   o  64-128 kb/s for FB stereo music.
+*/
+
+/*
+Forward Error Correction (FEC)
+
+   The voice mode of Opus allows for "in-band" forward error correction
+   (FEC) data to be embedded into the bit stream of Opus.
+*/
+
+/*
+RTP Header Usage
+
+   The format of the RTP header is specified in [RFC3550].  The Opus
+   payload format uses the fields of the RTP header consistent with this
+   specification.
+
+   The payload length of Opus is a multiple number of octets and
+   therefore no padding is required.  The payload MAY be padded by an
+   integer number of octets according to [RFC3550].
+
+   The marker bit (M) of the RTP header is used in accordance with
+   Section 4.1 of [RFC3551].
+
+   The RTP payload type for Opus has not been assigned statically and is
+   expected to be assigned dynamically.
+
+   The receiving side MUST be prepared to receive duplicates of RTP
+   packets.  Only one of those payloads MUST be provided to the Opus
+   decoder for decoding and others MUST be discarded.
+
+   Opus supports 5 different audio bandwidths which may be adjusted
+   during the duration of a call.  The RTP timestamp clock frequency is
+   defined as the highest supported sampling frequency of Opus, i.e.
+   48000 Hz, for all modes and sampling rates of Opus.  The unit for the
+   timestamp is samples per single (mono) channel.  The RTP timestamp
+   corresponds to the sample time of the first encoded sample in the
+   encoded frame.  For sampling rates lower than 48000 Hz the number of
+   samples has to be multiplied with a multiplier according to Table 2
+   to determine the RTP timestamp.
+
+                         +---------+------------+
+                         | fs (Hz) | Multiplier |
+                         +---------+------------+
+                         |   8000  |      6     |
+                         |         |            |
+                         |  12000  |      4     |
+                         |         |            |
+                         |  16000  |      3     |
+                         |         |            |
+                         |  24000  |      2     |
+                         |         |            |
+                         |  48000  |      1     |
+                         +---------+------------+
+
+                       Table 2: Timestamp multiplier
+*/
+
+#include "rtp_profile.h"
+
+#include <stdio.h>
+#include <string.h>
+
+struct lrtp_profile_opus_t {
+  struct lrtp_profile_t profile; // 'Inherit' lrtp_profile_t
+};
+
+int profile_opus_pack(struct lrtp_profile_t *profile,
+                      const char *frame, size_t framesize,
+                      RTP &rtp)
+{
+  //struct lrtp_profile_opus_t *p = (struct lrtp_profile_opus_t *)profile;
+  (void)profile;
+
+  rtp.setPayload(frame, framesize);
+  rtp.setValid(true);
+
+  return framesize;
+}
+
+int profile_opus_unpack(struct lrtp_profile_t *profile,
+                        const RTP &rtp,
+                        std::list<outputframe_t *> &framelist)
+{
+  struct lrtp_profile_opus_t *p = (struct lrtp_profile_opus_t *)profile;
+
+  outputframe_t *of = new outputframe_t();
+  of->size = rtp.payloadSize();
+  char *buf = (char*)malloc(of->size);
+  of->size = rtp.payload(buf, of->size);
+  of->data = buf;
+
+  framelist.push_back(of);
+
+  return 0;
+}
+
+void profile_opus_destroy(struct lrtp_profile_t *profile)
+{
+  struct lrtp_profile_opus_t *p = (struct lrtp_profile_opus_t *)profile;
+  delete p;
+}
+
+struct lrtp_profile_t *profile_opus_create(struct lrtp_t *lrtp,
+                                          unsigned int csrc,
+                                          va_list vp)
+{
+  struct lrtp_profile_opus_t *p = new struct lrtp_profile_opus_t;
+
+  p->profile.pack = profile_opus_pack;
+  p->profile.unpack = profile_opus_unpack;
+  p->profile.destroy = profile_opus_destroy;
+
+  while(true) {
+    int type = va_arg(vp, int);
+    if(type == OPTION_END) break;
+
+    switch(type) {
+    default:
+      // TODO: Unknown arg type
+      break;
+    }
+  }
+
+  return &p->profile;
+}
diff --git a/src/rtp_profile_opus.h b/src/rtp_profile_opus.h
new file mode 100644
index 0000000..23002d3
--- /dev/null
+++ b/src/rtp_profile_opus.h
@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            rtp_profile_opus.h
+ *
+ *  Tue Sep 10 13:53:24 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __LRTP_RTP_PROFILE_OPUS_H__
+#define __LRTP_RTP_PROFILE_OPUS_H__
+
+#include <stdarg.h>
+
+#include "lrtp.h"
+
+struct lrtp_profile_t *profile_opus_create(struct lrtp_t *lrtp,
+                                           unsigned int csrc,
+                                           va_list ap);
+
+#endif/*__LRTP_RTP_PROFILE_OPUS_H__*/
diff --git a/src/rtp_profile_raw.cc b/src/rtp_profile_raw.cc
new file mode 100644
index 0000000..cf34186
--- /dev/null
+++ b/src/rtp_profile_raw.cc
@@ -0,0 +1,123 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            rtp_profile_raw.cc
+ *
+ *  Mon Sep  2 14:30:56 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "rtp_profile_raw.h"
+
+#include "rtp_profile.h"
+
+#include <stdio.h>
+#include <string.h>
+
+struct lrtp_profile_raw_t {
+  struct lrtp_profile_t profile; // 'Inherit' lrtp_profile_t
+
+  unsigned short int pkg_size;
+
+  // Cache
+  char *pkg_cache;
+  int pkg_cache_size;
+};
+
+int profile_raw_pack(struct lrtp_profile_t *profile,
+                     const char *frame, size_t framesize,
+                     RTP &rtp)
+{
+  struct lrtp_profile_raw_t *p = (struct lrtp_profile_raw_t *)profile;
+
+  size_t cpsz = p->pkg_size - p->pkg_cache_size;
+
+  if(cpsz > framesize) cpsz = framesize;
+
+  if(cpsz != 0) {
+    memcpy(p->pkg_cache, frame, cpsz);
+    p->pkg_cache_size += cpsz;
+  }
+
+  if(p->pkg_cache_size == p->pkg_size) {
+    rtp.setPayload(p->pkg_cache, p->pkg_cache_size);
+    p->pkg_cache_size = 0;
+  }
+
+  return cpsz;
+}
+
+int profile_raw_unpack(struct lrtp_profile_t *profile,
+                       const RTP &rtp,
+                       std::list<outputframe_t *> &framelist)
+{
+  struct lrtp_profile_raw_t *p = (struct lrtp_profile_raw_t *)profile;
+
+  outputframe_t *of = new outputframe_t();
+  of->size = rtp.payloadSize();
+  char *buf = (char*)malloc(of->size);
+  of->size = rtp.payload(buf, of->size);
+  of->data = buf;
+
+  framelist.push_back(of);
+
+  return 0;
+}
+
+void profile_raw_destroy(struct lrtp_profile_t *profile)
+{
+  struct lrtp_profile_raw_t *p = (struct lrtp_profile_raw_t *)profile;
+  delete p->pkg_cache;
+  delete p;
+}
+
+struct lrtp_profile_t *profile_raw_create(struct lrtp_t *lrtp,
+                                          unsigned int csrc,
+                                          va_list vp)
+{
+  struct lrtp_profile_raw_t *p = new struct lrtp_profile_raw_t;
+
+  p->profile.pack = profile_raw_pack;
+  p->profile.unpack = profile_raw_unpack;
+  p->profile.destroy = profile_raw_destroy;
+
+  p->pkg_size = 100;
+
+  while(true) {
+    int type = va_arg(vp, int);
+    if(type == OPTION_END) break;
+
+    switch(type) {
+    case OPTION_RAW_PKG_SIZE:
+      p->pkg_size = va_arg(vp, int);
+      break;
+    default:
+      // TODO: Unknown arg type
+      break;
+    }
+  }
+
+  p->pkg_cache = new char[p->pkg_size];
+  p->pkg_cache_size = 0;
+
+  return &p->profile;
+}
+
diff --git a/src/rtp_profile_raw.h b/src/rtp_profile_raw.h
new file mode 100644
index 0000000..febae5d
--- /dev/null
+++ b/src/rtp_profile_raw.h
@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            rtp_profile_raw.h
+ *
+ *  Mon Sep  2 14:30:56 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __LRTP_RTP_PROFILE_RAW_H__
+#define __LRTP_RTP_PROFILE_RAW_H__
+
+#include <stdarg.h>
+
+#include "lrtp.h"
+
+struct lrtp_profile_t *profile_raw_create(struct lrtp_t *lrtp,
+                                          unsigned int csrc,
+                                          va_list ap);
+
+#endif/*__LRTP_RTP_PROFILE_RAW_H__*/
diff --git a/src/srtp.cc b/src/srtp.cc
new file mode 100644
index 0000000..98c4002
--- /dev/null
+++ b/src/srtp.cc
@@ -0,0 +1,230 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            srtp.cc
+ *
+ *  Thu Sep  5 10:46:10 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "srtp.h"
+
+#ifdef WIN32
+#include <srtp/crypto/include/datatypes.h>
+#include <srtp/include/srtp.h>
+#include <srtp/include/rtp_priv.h>
+#else
+#include <srtp/datatypes.h>
+#include <srtp/srtp.h>
+#include <srtp/rtp_priv.h>
+#endif
+
+#include "asc2bin.h"
+
+struct SRTP::prv {
+  char *key;
+  size_t key_len;
+
+  unsigned int ssrc;
+
+  srtp_t session;
+  srtp_policy_t policy;
+};
+
+static bool is_initialised = false;
+
+SRTP::SRTP(std::string key, unsigned int ssrc)
+{
+  prv = NULL;
+
+  err_status_t status;
+
+  if(!is_initialised) {
+    status = srtp_init();
+    if(status != err_status_ok) {
+      // TODO: Error handling
+      printf("srtp_init failed %d\n", status);
+    }
+    is_initialised = true;
+  }
+
+  prv = new struct prv;
+
+  prv->ssrc = ssrc;
+
+  setupKey(key);
+  setupPolicy(true, true);
+
+  status = srtp_create(&prv->session, &prv->policy);
+  if(status != err_status_ok) {
+    // TODO: Error handling
+    printf("srtp_create %d\n", status);
+  }
+
+  status = srtp_add_stream(prv->session, &prv->policy);
+  if(status != err_status_ok) {
+    // TODO: Error handling
+    printf("srtp_add_stream %d\n", status);
+  }
+}
+
+SRTP::~SRTP()
+{
+  err_status_t status = srtp_remove_stream(prv->session, htonl(prv->ssrc));
+  if(status != err_status_ok) {
+    // TODO: Error handling
+    printf("srtp_remove_stream failed %d\n", status);
+  }
+
+  status = srtp_dealloc(prv->session);
+  if(status != err_status_ok) {
+    // TODO: Error handling
+    printf("srtp_dealloc failed %d\n", status);
+  }
+
+  status = srtp_shutdown();
+  if(status != err_status_ok) {
+    // TODO: Error handling
+    printf("srtp_shutdown failed %d\n", status);
+  }
+
+  is_initialised = false;
+
+  if(prv) {
+    free(prv->key);
+    delete prv;
+  }
+}
+
+void SRTP::setupKey(const std::string &key)
+{
+  prv->key = (char *)calloc(MASTER_KEY_LEN, 1);
+  prv->key_len = MASTER_KEY_LEN;
+
+  if(key.length() > MASTER_KEY_LEN * 2) printf("KeyTooLong\n"); // TODO
+
+  // Read key from hexadecimal on command line into an octet string
+  ssize_t len = asc2bin(prv->key, prv->key_len, key.c_str(), key.size());
+
+  if(len == -1) printf("InvalidHexKeyString\n"); // TODO
+  prv->key_len = len;
+
+  // check that hex string is the right length.
+  if(len < MASTER_KEY_LEN) printf("KeyTooShort\n"); // TODO
+}
+
+void SRTP::setupPolicy(bool confidentiality, bool authentication)
+{
+#ifndef USE_CRYPTO
+  confidentiality = authentication = false;
+  printf("No crypto!\n")
+#endif  
+
+  /* 
+   * create policy structure, using the default mechanisms but 
+   * with only the security services requested on the command line,
+   * using the right SSRC value
+   */
+  if(confidentiality && authentication) {
+    crypto_policy_set_aes_cm_128_hmac_sha1_80(&prv->policy.rtp);
+    prv->policy.rtp.sec_serv = sec_serv_conf_and_auth;
+  } else if(confidentiality && !authentication) {
+    crypto_policy_set_aes_cm_128_null_auth(&prv->policy.rtp);
+    prv->policy.rtp.sec_serv = sec_serv_conf;
+  } else if(!confidentiality && authentication) {
+    crypto_policy_set_null_cipher_hmac_sha1_80(&prv->policy.rtp);
+    prv->policy.rtp.sec_serv = sec_serv_auth;
+  } else {
+    /*
+     * we're not providing security services, so set the policy to the
+     * null policy
+     *
+     * Note that this policy does not conform to the SRTP
+     * specification, since RTCP authentication is required.  However,
+     * the effect of this policy is to turn off SRTP, so that this
+     * application is now a vanilla-flavored RTP application.
+     */
+    prv->policy.rtp.cipher_type = NULL_CIPHER;
+    prv->policy.rtp.cipher_key_len = 0; 
+    prv->policy.rtp.auth_type = NULL_AUTH;
+    prv->policy.rtp.auth_key_len = 0;
+    prv->policy.rtp.auth_tag_len = 0;
+    prv->policy.rtp.sec_serv = sec_serv_none;   
+  }
+
+  crypto_policy_set_rtcp_default(&prv->policy.rtcp);
+  prv->policy.rtcp.sec_serv = sec_serv_none;  // No need for RTCP
+  
+  prv->policy.key = (uint8_t *)prv->key;
+  prv->policy.ssrc.type = ssrc_specific;
+  prv->policy.ssrc.value = prv->ssrc;
+  prv->policy.next = NULL;
+}
+
+int SRTP::encrypt(char *packet, size_t size)
+{
+  int sz = size;
+  err_status_t status = srtp_protect(prv->session, packet, &sz);
+  if(status != err_status_ok) {
+    // TODO: throw SRTP::UnprotectException();
+    printf("srtp_protect failed %d\n", status);
+  }
+
+  return sz;
+}
+
+int SRTP::decrypt(char *packet, size_t size)
+{
+  int sz = size;
+  err_status_t status = srtp_unprotect(prv->session, packet, &sz);
+  switch(status) {
+  case err_status_ok:
+    // No errors.
+    break;
+  case err_status_replay_fail:
+    // TODO: throw SRTP::ReplayException();// (replay check failed)
+    printf("srtp_unprotect failed replay %d\n", status);
+    break;
+  case err_status_replay_old:
+    // TODO: throw SRTP::ReplayOldException();// (replay check failed)
+    printf("srtp_unprotect failed replay_old %d\n", status);
+    break;
+  case err_status_auth_fail:
+    // TODO: throw SRTP::AuthCheckException();// (auth check failed)
+    printf("srtp_unprotect failed auth %d\n", status);
+    break;
+  default:
+    // TODO: throw SRTP::UnprotectException();
+    printf("srtp_unprotect failed %d\n", status);
+    break;
+  }
+
+  /*
+	if(octets_recvd - RTP_HEADER_LEN > (ssize_t)size) {
+    printf("BufferSize %d\n", status);
+  }
+  */
+
+  // TODO: rtp.fromBuffer(packet, size);
+  //memcpy(buf, prv->receiver->message.body, octets_recvd - RTP_HEADER_LEN);
+
+  return sz;
+}
diff --git a/src/srtp.h b/src/srtp.h
new file mode 100644
index 0000000..3d8b697
--- /dev/null
+++ b/src/srtp.h
@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            srtp.h
+ *
+ *  Thu Sep  5 10:46:10 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of lrtp.
+ *
+ * lrtp is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * lrtp 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with lrtp; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifndef __LRTP_SRTP_H__
+#define __LRTP_SRTP_H__
+
+#include <string>
+
+#include "rtp.h"
+
+#define MAX_KEY_LEN 64
+#define MASTER_KEY_LEN 30
+
+class SRTP {
+public:
+  SRTP(std::string key, unsigned int ssrc);
+  ~SRTP();
+
+  int encrypt(char *packet, size_t size);
+  int decrypt(char *packet, size_t size);
+
+private:
+  struct prv;
+  struct prv *prv;
+
+  void setupKey(const std::string &key);
+  void setupPolicy(bool confidentiality, bool authentication);
+};
+
+#endif/*__LRTP_SRTP_H__*/