/* * Copyright (c) 1993-1994 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and the Network Research Group at * Lawrence Berkeley Laboratory. * 4. Neither the name of the University nor of the Laboratory may be used * to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* Changed by Ping Pan, Columbia University/Bell Labs, 2000 * - making RTCP header parsing easier. */ #ifndef yessir_rtp_h #define yessir_rtp_h #include #define RTP_PT_BVC 22 /* Berkeley video codec */ /* RTP standard content encodings for video */ #define RTP_PT_RGB8 23 /* 8-bit dithered RGB */ #define RTP_PT_HDCC 24 /* SGI proprietary */ #define RTP_PT_CELLB 25 /* Sun CellB */ #define RTP_PT_JPEG 26 /* JPEG */ #define RTP_PT_CUSEEME 27 /* Cornell CU-SeeMe */ #define RTP_PT_NV 28 /* Xerox PARC nv */ #define RTP_PT_PICW 29 /* BB&N PictureWindow */ #define RTP_PT_CPV 30 /* Concept/Bolter/Viewpoint codec */ #define RTP_PT_H261 31 /* ITU H.261 */ #define RTP_PT_MPEG 32 /* MPEG-I & MPEG-II */ #define RTP_PT_MP2T 33 /* MPEG-II either audio or video */ /* backward compat hack for decoding RTPv1 ivs streams */ #define RTP_PT_H261_COMPAT 127 /* RTP standard content encodings for audio */ #define RTP_PT_PCMU 0 #define RTP_PT_CELP 1 #define RTP_PT_GSM 3 #define RTP_PT_DVI 5 #define RTP_PT_LPC 7 /* Offset from UNIX's epoch to the NTP epoch in seconds (NTP's JAN_1970) */ #define RTP_EPOCH_OFFSET 2208988800UL #define RTP_VERSION 2 #define RTP_M 0x0080 /* Marker: significant event */ #define RTP_P 0x2000 /* Padding is present */ #define RTP_X 0x1000 /* Extension Header is present */ /* Basic RTP header */ struct rtphdr { u_int16_t rh_flags; /* T:2 P:1 X:1 CC:4 M:1 PT:7 */ u_int16_t rh_seqno; /* sequence number */ u_int32_t rh_ts; /* media-specific time stamp */ u_int32_t rh_ssrc; /* synchronization src id */ /* data sources follow per cc */ }; struct rtcphdr { u_int16_t rh_flags; /* T:2 P:1 CNT:5 PT:8 */ u_int16_t rh_len; /* length of message (in bytes) */ u_int32_t rh_ssrc; /* synchronization src id */ }; #define RTCP_VER_OFFSET 14 /* offset to version field */ #define RTCP_PT_MASK 0xff /* mask for PT */ #define RTCP_VER_OF(x) (x >> RTCP_VER_OFFSET) #define RTCP_PT_OF(x) (x & RTCP_PT_MASK) #define RTCP_LEN_OF(x) (x + 1) * sizeof(u_int32_t); typedef struct { u_int32_t upper; /* more significant 32 bits */ u_int32_t lower; /* less significant 32 bits */ } ntp64; /* * Sender report. */ struct rtcp_sr { ntp64 sr_ntp; /* 64-bit ntp timestamp */ u_int32_t sr_ts; /* reference media timestamp */ u_int32_t sr_np; /* no. packets sent */ u_int32_t sr_nb; /* no. bytes sent */ }; /* * Receiver report. * Time stamps are middle 32-bits of ntp timestamp. */ struct rtcp_rr { u_int32_t rr_srcid; /* sender being reported */ u_int32_t rr_loss; /* loss stats (8:fraction, 24:cumulative)*/ u_int32_t rr_ehsr; /* ext. highest seqno received */ u_int32_t rr_dv; /* jitter (delay variance) */ u_int32_t rr_lsr; /* orig. ts from last rr from this src */ u_int32_t rr_dlsr; /* time from recpt of last rr to xmit time */ }; #define RTCP_PT_SR 200 /* sender report */ #define RTCP_PT_RR 201 /* receiver report */ #define RTCP_PT_SDES 202 /* source description */ #define RTCP_SDES_CNAME 1 /* official name (mandatory) */ #define RTCP_SDES_NAME 2 /* personal name (optional) */ #define RTCP_SDES_EMAIL 3 /* e-mail addr (optional) */ #define RTCP_SDES_PHONE 4 /* telephone # (optional) */ #define RTCP_SDES_LOC 5 /* geographical location */ #define RTCP_SDES_TOOL 6 /* name/(vers) of app */ #define RTCP_SDES_NOTE 7 /* transient messages */ #define RTCP_SDES_PRIV 8 /* private SDES extensions */ #define RTCP_PT_BYE 203 /* end of participation */ #define RTCP_PT_APP 204 /* application specific functions */ #define RTCP_SDES_MIN 1 #define RTCP_SDES_MAX 7 /* * Parameters controling the RTCP report rate timer. */ #define RTCP_SESSION_BW_FRACTION (0.05) #define RTCP_MIN_RPT_TIME (5.) #define RTCP_SENDER_BW_FRACTION (0.25) #define RTCP_RECEIVER_BW_FRACTION (1. - RTCP_SENDER_BW_FRACTION) #define RTCP_SIZE_GAIN (1./8.) /* * Largest (user-level) packet size generated by our rtp applications. * Individual video formats may use smaller mtu's. */ #define RTP_MTU 1024 #define MAXHDR 24 /* * Motion JPEG encapsulation. * * 0 1 2 3 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | MBZ | frag offset | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | Type | Q | Width | Height | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * * Type = Index into a table of predefined JPEG parameters * Width = Width of input in 8-pixel blocks * Height = Height of input in 8-pixel blocks * Q = Quality factor (0-100 = std, >100 = custom) * Frag offset = The byte offset into the frame for the data in * this packet */ struct jpeghdr { u_int32_t off; /* fragment offset */ u_int8_t type; /* id of jpeg decoder params */ u_int8_t q; /* quantization factor (or table id) */ u_int8_t width; /* 1/8 frame width */ u_int8_t height; /* 1/8 frame height */ }; /* * NV encapsulation. */ struct nvhdr { u_int16_t width; u_int16_t height; /* nv data */ }; /* * CellB encapsulation. */ struct cellbhdr { u_int16_t x; u_int16_t y; u_int16_t width; u_int16_t height; /* cells */ }; /* * H.261 encapsulation. * See Internet draft. * * 0 1 2 3 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * |SBIT |EBIT |I|V| GOBN | MBAP | QUANT | HMVD | VMVD | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ */ #ifdef notdef struct h261hdr { u_int16_t flags; u_int16_t off; }; #endif struct bvchdr { u_int8_t version; u_int8_t pad; u_int8_t width; u_int8_t height; u_int32_t quant; u_int8_t sbit; u_int8_t ebit; u_int16_t blkno; }; #endif