Add FFMPEG_ prefix to all multiple inclusion guards.
[libav.git] / libavformat / rtp_internal.h
1 /*
2 * RTP definitions
3 * Copyright (c) 2006 Ryan Martell <rdm4@martellventures.com>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 // this is a bit of a misnomer, because rtp & rtsp internal structures and prototypes are in here.
23 #ifndef FFMPEG_RTP_INTERNAL_H
24 #define FFMPEG_RTP_INTERNAL_H
25
26 #include <stdint.h>
27 #include "avcodec.h"
28 #include "rtp.h"
29
30 // these statistics are used for rtcp receiver reports...
31 typedef struct {
32 uint16_t max_seq; ///< highest sequence number seen
33 uint32_t cycles; ///< shifted count of sequence number cycles
34 uint32_t base_seq; ///< base sequence number
35 uint32_t bad_seq; ///< last bad sequence number + 1
36 int probation; ///< sequence packets till source is valid
37 int received; ///< packets received
38 int expected_prior; ///< packets expected in last interval
39 int received_prior; ///< packets received in last interval
40 uint32_t transit; ///< relative transit time for previous packet
41 uint32_t jitter; ///< estimated jitter.
42 } RTPStatistics;
43
44
45 typedef int (*DynamicPayloadPacketHandlerProc) (struct RTPDemuxContext * s,
46 AVPacket * pkt,
47 uint32_t *timestamp,
48 const uint8_t * buf,
49 int len);
50
51 typedef struct RTPDynamicProtocolHandler_s {
52 // fields from AVRtpDynamicPayloadType_s
53 const char enc_name[50]; /* XXX: still why 50 ? ;-) */
54 enum CodecType codec_type;
55 enum CodecID codec_id;
56
57 // may be null
58 int (*parse_sdp_a_line) (AVStream * stream,
59 void *protocol_data,
60 const char *line); ///< Parse the a= line from the sdp field
61 void *(*open) (); ///< allocate any data needed by the rtp parsing for this dynamic data.
62 void (*close)(void *protocol_data); ///< free any data needed by the rtp parsing for this dynamic data.
63 DynamicPayloadPacketHandlerProc parse_packet; ///< parse handler for this dynamic packet.
64
65 struct RTPDynamicProtocolHandler_s *next;
66 } RTPDynamicProtocolHandler;
67
68 // moved out of rtp.c, because the h264 decoder needs to know about this structure..
69 struct RTPDemuxContext {
70 AVFormatContext *ic;
71 AVStream *st;
72 int payload_type;
73 uint32_t ssrc;
74 uint16_t seq;
75 uint32_t timestamp;
76 uint32_t base_timestamp;
77 uint32_t cur_timestamp;
78 int max_payload_size;
79 struct MpegTSContext *ts; /* only used for MP2T payloads */
80 int read_buf_index;
81 int read_buf_size;
82 /* used to send back RTCP RR */
83 URLContext *rtp_ctx;
84 char hostname[256];
85
86 RTPStatistics statistics; ///< Statistics for this stream (used by RTCP receiver reports)
87
88 /* rtcp sender statistics receive */
89 int64_t last_rtcp_ntp_time; // TODO: move into statistics
90 int64_t first_rtcp_ntp_time; // TODO: move into statistics
91 uint32_t last_rtcp_timestamp; // TODO: move into statistics
92
93 /* rtcp sender statistics */
94 unsigned int packet_count; // TODO: move into statistics (outgoing)
95 unsigned int octet_count; // TODO: move into statistics (outgoing)
96 unsigned int last_octet_count; // TODO: move into statistics (outgoing)
97 int first_packet;
98 /* buffer for output */
99 uint8_t buf[RTP_MAX_PACKET_LENGTH];
100 uint8_t *buf_ptr;
101
102 /* special infos for au headers parsing */
103 rtp_payload_data_t *rtp_payload_data; // TODO: Move into dynamic payload handlers
104
105 /* dynamic payload stuff */
106 DynamicPayloadPacketHandlerProc parse_packet; ///< This is also copied from the dynamic protocol handler structure
107 void *dynamic_protocol_context; ///< This is a copy from the values setup from the sdp parsing, in rtsp.c don't free me.
108 int max_frames_per_packet;
109 };
110
111 extern RTPDynamicProtocolHandler *RTPFirstDynamicPayloadHandler;
112
113 int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size); ///< from rtsp.c, but used by rtp dynamic protocol handlers.
114
115 void ff_rtp_send_data(AVFormatContext *s1, const uint8_t *buf1, int len, int m);
116
117 void av_register_rtp_dynamic_payload_handlers(void);
118
119 #endif /* FFMPEG_RTP_INTERNAL_H */
120