mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
4a6cc06123
Basically taken verbatim from RFC 1889. Patch by Ryan Martell % rdm4 A martellventures P com % Original thread: Date: Oct 31, 2006 12:43 AM Subject: [Ffmpeg-devel] [PATCH] RTCP valid receiver statistics.... Originally committed as revision 6879 to svn://svn.ffmpeg.org/ffmpeg/trunk
111 lines
4.7 KiB
C
111 lines
4.7 KiB
C
/*
|
|
* RTP definitions
|
|
* Copyright (c) 2006 Ryan Martell <rdm4@martellventures.com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
// this is a bit of a misnomer, because rtp & rtsp internal structures and prototypes are in here.
|
|
#ifndef RTP_INTERNAL_H
|
|
#define RTP_INTERNAL_H
|
|
|
|
// these statistics are used for rtcp receiver reports...
|
|
typedef struct {
|
|
uint16_t max_seq; ///< highest sequence number seen
|
|
uint32_t cycles; ///< shifted count of sequence number cycles
|
|
uint32_t base_seq; ///< base sequence number
|
|
uint32_t bad_seq; ///< last bad sequence number + 1
|
|
int probation; ///< sequence packets till source is valid
|
|
int received; ///< packets received
|
|
int expected_prior; ///< packets expected in last interval
|
|
int received_prior; ///< packets received in last interval
|
|
uint32_t transit; ///< relative transit time for previous packet
|
|
uint32_t jitter; ///< estimated jitter.
|
|
} RTPStatistics;
|
|
|
|
|
|
typedef int (*DynamicPayloadPacketHandlerProc) (struct RTPDemuxContext * s,
|
|
AVPacket * pkt,
|
|
uint32_t *timestamp,
|
|
const uint8_t * buf,
|
|
int len);
|
|
|
|
typedef struct RTPDynamicProtocolHandler_s {
|
|
// fields from AVRtpDynamicPayloadType_s
|
|
const char enc_name[50]; /* XXX: still why 50 ? ;-) */
|
|
enum CodecType codec_type;
|
|
enum CodecID codec_id;
|
|
|
|
// may be null
|
|
int (*parse_sdp_a_line) (AVStream * stream,
|
|
void *protocol_data,
|
|
const char *line); ///< Parse the a= line from the sdp field
|
|
void *(*open) (); ///< allocate any data needed by the rtp parsing for this dynamic data.
|
|
void (*close)(void *protocol_data); ///< free any data needed by the rtp parsing for this dynamic data.
|
|
DynamicPayloadPacketHandlerProc parse_packet; ///< parse handler for this dynamic packet.
|
|
|
|
struct RTPDynamicProtocolHandler_s *next;
|
|
} RTPDynamicProtocolHandler;
|
|
|
|
// moved out of rtp.c, because the h264 decoder needs to know about this structure..
|
|
struct RTPDemuxContext {
|
|
AVFormatContext *ic;
|
|
AVStream *st;
|
|
int payload_type;
|
|
uint32_t ssrc;
|
|
uint16_t seq;
|
|
uint32_t timestamp;
|
|
uint32_t base_timestamp;
|
|
uint32_t cur_timestamp;
|
|
int max_payload_size;
|
|
struct MpegTSContext *ts; /* only used for MP2T payloads */
|
|
int read_buf_index;
|
|
int read_buf_size;
|
|
/* used to send back RTCP RR */
|
|
URLContext *rtp_ctx;
|
|
char hostname[256];
|
|
|
|
RTPStatistics statistics; ///< Statistics for this stream (used by RTCP receiver reports)
|
|
|
|
/* rtcp sender statistics receive */
|
|
int64_t last_rtcp_ntp_time; // TODO: move into statistics
|
|
int64_t first_rtcp_ntp_time; // TODO: move into statistics
|
|
uint32_t last_rtcp_timestamp; // TODO: move into statistics
|
|
|
|
/* rtcp sender statistics */
|
|
unsigned int packet_count; // TODO: move into statistics (outgoing)
|
|
unsigned int octet_count; // TODO: move into statistics (outgoing)
|
|
unsigned int last_octet_count; // TODO: move into statistics (outgoing)
|
|
int first_packet;
|
|
/* buffer for output */
|
|
uint8_t buf[RTP_MAX_PACKET_LENGTH];
|
|
uint8_t *buf_ptr;
|
|
|
|
/* special infos for au headers parsing */
|
|
rtp_payload_data_t *rtp_payload_data; // TODO: Move into dynamic payload handlers
|
|
|
|
/* dynamic payload stuff */
|
|
DynamicPayloadPacketHandlerProc parse_packet; ///< This is also copied from the dynamic protocol handler structure
|
|
void *dynamic_protocol_context; ///< This is a copy from the values setup from the sdp parsing, in rtsp.c don't free me.
|
|
};
|
|
|
|
extern RTPDynamicProtocolHandler *RTPFirstDynamicPayloadHandler;
|
|
|
|
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.
|
|
#endif /* RTP_INTERNAL_H */
|
|
|