code.delx.au - pulseaudio/blob - src/modules/bluetooth/rtp.h

   1 /*
   2  *
   3  *  BlueZ - Bluetooth protocol stack for Linux
   4  *
   5  *  Copyright (C) 2004-2010  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This library is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU Lesser General Public
  10  *  License as published by the Free Software Foundation; either
  11  *  version 2.1 of the License, or (at your option) any later version.
  12  *
  13  *  This library is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *  Lesser General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU Lesser General Public
  19  *  License along with this library; if not, write to the Free Software
  20  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21  *
  22  */
  23
  24 #if __BYTE_ORDER == __LITTLE_ENDIAN
  25
  26 struct rtp_header {
  27         unsigned cc:4;
  28         unsigned x:1;
  29         unsigned p:1;
  30         unsigned v:2;
  31
  32         unsigned pt:7;
  33         unsigned m:1;
  34
  35         uint16_t sequence_number;
  36         uint32_t timestamp;
  37         uint32_t ssrc;
  38         uint32_t csrc[0];
  39 } __attribute__ ((packed));
  40
  41 struct rtp_payload {
  42         unsigned frame_count:4;
  43         unsigned rfa0:1;
  44         unsigned is_last_fragment:1;
  45         unsigned is_first_fragment:1;
  46         unsigned is_fragmented:1;
  47 } __attribute__ ((packed));
  48
  49 #elif __BYTE_ORDER == __BIG_ENDIAN
  50
  51 struct rtp_header {
  52         unsigned v:2;
  53         unsigned p:1;
  54         unsigned x:1;
  55         unsigned cc:4;
  56
  57         unsigned m:1;
  58         unsigned pt:7;
  59
  60         uint16_t sequence_number;
  61         uint32_t timestamp;
  62         uint32_t ssrc;
  63         uint32_t csrc[0];
  64 } __attribute__ ((packed));
  65
  66 struct rtp_payload {
  67         unsigned is_fragmented:1;
  68         unsigned is_first_fragment:1;
  69         unsigned is_last_fragment:1;
  70         unsigned rfa0:1;
  71         unsigned frame_count:4;
  72 } __attribute__ ((packed));
  73
  74 #else
  75 #error "Unknown byte order"
  76 #endif