Done with encryption and core adaptations.

1 files changed, 211 insertions, 0 deletions

diff --git a/toxav/toxrtp.h b/toxav/toxrtp.h
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+/**  toxrtp.h
+ * 
+ *   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/>.
+ *
+ * 
+ *   Report bugs/suggestions to me ( mannol ) at either #tox-dev @ freenode.net:6667 or
+ *   my email: eniz_vukovic@hotmail.com
+ */
+
+#ifndef __TOXRTP
+#define __TOXRTP
+
+#define RTP_VERSION 2
+#include <inttypes.h>
+#include "../toxcore/tox.h"
+
+/**
+ * Standard rtp header
+ */
+
+typedef struct _RTPHeader {
+    uint8_t   flags;             /* Version(2),Padding(1), Ext(1), Cc(4) */
+    uint8_t   marker_payloadt;   /* Marker(1), PlayLoad Type(7) */
+    uint16_t  sequnum;           /* Sequence Number */
+    uint32_t  timestamp;         /* Timestamp */
+    uint32_t  ssrc;              /* SSRC */
+    uint32_t* csrc;              /* CSRC's table */
+    uint32_t  length;            /* Length of the header in payload string. */
+
+} RTPHeader;
+
+
+/**
+ * @brief Standard rtp extension header.
+ * 
+ */
+typedef struct _RTPExtHeader {
+    uint16_t  type;          /* Extension profile */
+    uint16_t  length;        /* Number of extensions */
+    uint32_t* table;         /* Extension's table */
+    
+} RTPExtHeader;
+
+
+/**
+ * @brief Standard rtp message.
+ * 
+ */
+typedef struct _RTPMessage {
+    RTPHeader*    header;
+    RTPExtHeader* ext_header;
+
+    uint8_t*      data;
+    uint32_t      length;
+    tox_IP_Port   from;
+
+    struct _RTPMessage*   next;
+} RTPMessage;
+
+
+/**
+ * @brief Our main session descriptor.
+ *        It measures the session variables and controls
+ *        the entire session. There are functions for manipulating
+ *        the session so tend to use those instead of directly modifying
+ *        session parameters.
+ * 
+ */
+typedef struct _RTPSession {
+    uint8_t         version;
+    uint8_t         padding;
+    uint8_t         extension;
+    uint8_t         cc;
+    uint8_t         marker;
+    uint8_t         payload_type;
+    uint16_t        sequnum;   /* Set when sending */
+    uint16_t        rsequnum;  /* Check when recving msg */
+    uint32_t        timestamp;
+    uint32_t        ssrc;
+    uint32_t*       csrc;
+
+    /* If some additional data must be sent via message
+     * apply it here. Only by allocating this member you will be
+     * automatically placing it within a message.
+     */
+    RTPExtHeader*   ext_header;
+    
+    /* External header identifiers */
+    int             resolution;
+    int             framerate;
+
+
+    /* Since these are only references of the
+     * call structure don't allocate or free
+     */
+
+    const uint8_t*  encrypt_key;
+    const uint8_t*  decrypt_key;
+    uint8_t*        encrypt_nonce;
+    uint8_t*        decrypt_nonce;
+
+    uint8_t*        nonce_cycle;
+
+    RTPMessage*     oldest_msg;
+    RTPMessage*     last_msg; /* tail */
+
+    /* Msg prefix for core to know when recving */
+    uint8_t         prefix;
+
+    pthread_mutex_t mutex;
+    tox_IP_Port     dest;
+
+} RTPSession;
+
+
+/**
+ * @brief Release all messages held by session.
+ * 
+ * @param session The session.
+ * @return int
+ * @retval -1 Error occurred.
+ * @retval 0 Success.
+ */
+int rtp_release_session_recv ( RTPSession* session );
+
+
+/**
+ * @brief Get's oldest message in the list.
+ * 
+ * @param session Where the list is.
+ * @return RTPMessage* The message. You need to call rtp_msg_free() to free it.
+ * @retval NULL No messages in the list, or no list.
+ */
+RTPMessage* rtp_recv_msg ( RTPSession* session );
+
+
+/**
+ * @brief Sends msg to _RTPSession::dest
+ * 
+ * @param session The session.
+ * @param msg The message
+ * @param messenger Tox* object.
+ * @return int
+ * @retval -1 On error.
+ * @retval 0 On success.
+ */
+int rtp_send_msg ( RTPSession* session, Tox* messenger, const uint8_t* data, uint16_t length );
+
+
+/**
+ * @brief Speaks for it self.
+ * 
+ * @param session The control session msg belongs to. It can be NULL.
+ * @param msg The message.
+ * @return void
+ */
+void rtp_free_msg ( RTPSession* session, RTPMessage* msg );
+
+
+/**
+ * @brief Must be called before calling any other rtp function. It's used
+ *        to initialize RTP control session.
+ * 
+ * @param payload_type Type of payload used to send. You can use values in toxmsi.h::MSICallType
+ * @param messenger Tox* object.
+ * @param friend_num Friend id.
+ * @param encrypt_key Speaks for it self.
+ * @param decrypt_key Speaks for it self.
+ * @param encrypt_nonce Speaks for it self.
+ * @param decrypt_nonce Speaks for it self.
+ * @return RTPSession* Created control session.
+ * @retval NULL Error occurred.
+ */
+RTPSession* rtp_init_session ( int            payload_type, 
+                               Tox*           messenger, 
+                               int            friend_num, 
+                               const uint8_t* encrypt_key, 
+                               const uint8_t* decrypt_key, 
+                               const uint8_t* encrypt_nonce, 
+                               const uint8_t* decrypt_nonce );
+
+
+/**
+ * @brief Terminate the session.
+ * 
+ * @param session The session.
+ * @param messenger The messenger who owns the session
+ * @return int
+ * @retval -1 Error occurred.
+ * @retval 0 Success.
+ */
+int rtp_terminate_session ( RTPSession* session, Tox* messenger );
+
+
+
+#endif /* __TOXRTP */