1 /* 2 * 3 * BlueZ - Bluetooth protocol stack for Linux 4 * 5 * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org> 6 * Copyright (C) 2019 Pali Rohár <pali.rohar@gmail.com> 7 * 8 * 9 * This library is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Lesser General Public 11 * License as published by the Free Software Foundation; either 12 * version 2.1 of the License, or (at your option) any later version. 13 * 14 * This library is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Lesser General Public License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 21 */ 22 23 #include <endian.h> 24 #include <stdint.h> 25 26 #if defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && \ 27 __BYTE_ORDER == __LITTLE_ENDIAN 28 29 struct rtp_header { 30 uint8_t cc:4; 31 uint8_t x:1; 32 uint8_t p:1; 33 uint8_t v:2; 34 35 uint8_t pt:7; 36 uint8_t m:1; 37 38 uint16_t sequence_number; 39 uint32_t timestamp; 40 uint32_t ssrc; 41 uint32_t csrc[0]; 42 } __attribute__ ((packed)); 43 44 struct rtp_sbc_payload { 45 uint8_t frame_count:4; 46 uint8_t rfa0:1; 47 uint8_t is_last_fragment:1; 48 uint8_t is_first_fragment:1; 49 uint8_t is_fragmented:1; 50 } __attribute__ ((packed)); 51 52 #elif defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && \ 53 __BYTE_ORDER == __BIG_ENDIAN 54 55 struct rtp_header { 56 uint8_t v:2; 57 uint8_t p:1; 58 uint8_t x:1; 59 uint8_t cc:4; 60 61 uint8_t m:1; 62 uint8_t pt:7; 63 64 uint16_t sequence_number; 65 uint32_t timestamp; 66 uint32_t ssrc; 67 uint32_t csrc[0]; 68 } __attribute__ ((packed)); 69 70 struct rtp_sbc_payload { 71 uint8_t is_fragmented:1; 72 uint8_t is_first_fragment:1; 73 uint8_t is_last_fragment:1; 74 uint8_t rfa0:1; 75 uint8_t frame_count:4; 76 } __attribute__ ((packed)); 77 78 #else 79 #error "Unknown byte order" 80 #endif 81