tox A/V: RTP/MSI implementation

1 files changed, 111 insertions, 0 deletions

diff --git a/toxrtp/toxrtp_message.h b/toxrtp/toxrtp_message.h
new file mode 100644
index 00000000..8feea5d9
--- /dev/null
+++ b/toxrtp/toxrtp_message.h
@@ -0,0 +1,111 @@
+/*   rtp_message.h
+ *
+ *   Rtp Message handler. It handles message/header parsing.
+ *   Refer to RTP: A Transport Protocol for Real-Time Applications ( RFC 3550 ) for more info. !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/>.
+ *
+ */
+
+#ifndef _RTP__MESSAGE_H_
+#define _RTP__MESSAGE_H_
+
+#include "../toxcore/network.h"
+#include "toxrtp_helper.h"
+#include "../toxcore/tox.h"
+/* Defines */
+
+#define _MAX_SEQU_NUM 65535
+
+/* Minimum size */
+#define _MIN_HEADER_LENGTH 12
+#define _MIN_EXT_HEADER_LENGTH 4
+
+/* End of defines */
+
+
+typedef struct rtp_dest_list_s {
+    tox_IP_Port             _dest;
+    struct rtp_dest_list_s* next;
+
+} rtp_dest_list_t;
+
+typedef struct rtp_header_s {
+    uint8_t      _flags;             /* Version(2),Padding(1), Ext(1), Cc(4) */
+    uint8_t      _marker_payload_t;  /* Marker(1), PlayLoad Type(7) */
+    uint16_t     _sequence_number;   /* Sequence Number */
+    uint32_t     _timestamp;         /* Timestamp */
+    uint32_t     _ssrc;              /* SSRC */
+    uint32_t*    _csrc;              /* CSRC's table */
+
+    uint32_t     _length;            /* A little something for allocation */
+
+} rtp_header_t;
+
+typedef struct rtp_ext_header_s {
+    uint16_t     _ext_type;          /* Extension profile */
+    uint16_t     _ext_len;           /* Number of extensions */
+    uint32_t*    _hd_ext;            /* Extension's table */
+
+
+} rtp_ext_header_t;
+
+typedef struct rtp_msg_s {
+    struct rtp_header_s*     _header;
+    struct rtp_ext_header_s* _ext_header;
+    uint32_t                 _header_lenght;
+
+    uint8_t*                 _data;
+    uint32_t                 _length;
+    tox_IP_Port              _from;
+
+    struct rtp_msg_s*        _next;
+} rtp_msg_t;
+
+/* Extracts the header from the payload starting at _from */
+rtp_header_t*       rtp_extract_header ( const uint8_t* _payload, size_t _bytes );
+rtp_ext_header_t*   rtp_extract_ext_header ( const uint8_t* _payload, size_t _bytes );
+
+
+uint8_t*  rtp_add_header ( rtp_header_t* _header, uint8_t* _payload );
+uint8_t*  rtp_add_extention_header ( rtp_ext_header_t* _header, uint8_t* _payload );
+
+/* Gets the size of the header _header in bytes */
+size_t  rtp_header_get_size ( const rtp_header_t* _header );
+
+void    rtp_header_print (const rtp_header_t* _header);
+
+/* Adding flags and settings */
+void    rtp_header_add_flag_version ( rtp_header_t* _header, uint32_t value );
+void    rtp_header_add_flag_padding ( rtp_header_t* _header, uint32_t value );
+void    rtp_header_add_flag_extension ( rtp_header_t* _header, uint32_t value );
+void    rtp_header_add_flag_CSRC_count ( rtp_header_t* _header, uint32_t value );
+void    rtp_header_add_setting_marker ( rtp_header_t* _header, uint32_t value );
+void    rtp_header_add_setting_payload ( rtp_header_t* _header, uint32_t value );
+
+
+/* Getting values from flags and settings */
+uint8_t rtp_header_get_flag_version ( const rtp_header_t* _header );
+uint8_t rtp_header_get_flag_padding ( const rtp_header_t* _header );
+uint8_t rtp_header_get_flag_extension ( const rtp_header_t* _header );
+uint8_t rtp_header_get_flag_CSRC_count ( const rtp_header_t* _header );
+uint8_t rtp_header_get_setting_marker ( const rtp_header_t* _header );
+uint8_t rtp_header_get_setting_payload_type ( const rtp_header_t* _header );
+
+#endif /* _RTP__MESSAGE_H_ */