mirror of
https://github.com/drasko/open-ameba.git
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134 lines
No EOL
4.4 KiB
C
134 lines
No EOL
4.4 KiB
C
#ifndef _RTP_API_H_
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#define _RTP_API_H_
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#include "dlist.h"
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#include "basic_types.h"
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#include "osdep_service.h"
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//#include "osdep_api.h"
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#include "avcodec.h"
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#include <lwip/def.h> //for host network byte order convertion
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/* from error_base.h */
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#define EIO 5 /* I/O error */
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#define EAGAIN 11 /* Try again */
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#define ENOMEM 12 /* Out of memory */
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#define EINVAL 22 /* Invalid argument */
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#define RTP_BIG_ENDIAN 0
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#define RTP_HDR_SZ 12
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#define RTP_SERVER_PORT_BASE 55608
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#define RTP_PORT_BASE 50020
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#define RTP_CLIENT_PORT_BASE 51020
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/*
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* RTP data header from RFC1889
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*/
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/*
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*
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*
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* The RTP header has the following format:
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*
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |V=2|P|X| CC |M| PT | sequence number |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | timestamp |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | synchronization source (SSRC) identifier |
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* +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
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* | contributing source (CSRC) identifiers |
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* | .... |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* RTP data header
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*/
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typedef struct {
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#if RTP_BIG_ENDIAN
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u16 version:2; /* protocol version */
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u16 p:1; /* padding flag */
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u16 x:1; /* header extension flag */
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u16 cc:4; /* CSRC count */
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u16 m:1; /* marker bit */
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u16 pt:7; /* payload type */
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#else /*RTP_LITTLE_ENDIAN*/
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u16 cc:4; /* CSRC count */
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u16 x:1; /* header extension flag */
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u16 p:1; /* padding flag */
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u16 version:2; /* protocol version */
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u16 pt:7; /* payload type */
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u16 m:1; /* marker bit */
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#endif
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u16 seq; /* sequence number */
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u32 ts; /* timestamp */
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u32 ssrc; /* synchronization source */
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u32 *csrc; /* optional CSRC list, skip if cc is set to 0 here*/
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} rtp_hdr_t;
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/*sturcture to hold connect info*/
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struct connect_context
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{
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int socket_id;
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u8 *server_ip;
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u16 server_port;
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u8 *remote_ip;
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u16 remote_port;
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};
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struct rtp_statistics
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{
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u32 rtp_tick;
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u32 rtp_tick_inc;
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u32 base_timestamp;
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/*for flow control*/
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u32 delay_threshold; //in ms
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u32 timer1; //time before send
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u32 timer2; //time after sent
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u32 delta_timer;
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u8 do_start_check; //indicate if start check need to be done
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u32 sent_packet;
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u32 drop_packet;
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};
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enum rtp_object_state
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{
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RTP_OBJECT_IDLE = 0,
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RTP_OBJECT_READY,
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RTP_OBJECT_INUSE,
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RTP_OBJECT_USED,
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};
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struct stream_context;
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struct rtp_object;
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struct rtp_object
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{
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struct list_head rtp_list;
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_mutex list_lock;
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rtp_hdr_t *rtphdr;
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void *extra; //pointer to type specific structure
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int index; //respective internal buffer index
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u8 *data; // respective internal buffer data addr
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int len; //one complete frame data length
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u32 timestamp; //timestamp
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u32 fs:1; //fragment start
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u32 fe:1; //fragment end
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u32 fk:1; //fragment keep indicator so that cannot avoid sending by flow control
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u32 fd:29; //fragment data size (max size of 2^29-1)
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enum rtp_object_state state;
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struct connect_context connect_ctx;
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int (*rtp_object_handler)(struct stream_context *stream_ctx, struct rtp_object *payload);
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};
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void rtp_object_init(struct rtp_object *payload);
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void rtp_object_deinit(struct rtp_object *payload);
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void rtp_object_set_fs(struct rtp_object *payload, int flag);
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void rtp_object_set_fe(struct rtp_object *payload, int flag);
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void rtp_object_set_fk(struct rtp_object *payload, int flag);
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void rtp_object_set_fd(struct rtp_object *payload, int size);
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void rtp_load_o_handler_by_codec_id(struct rtp_object *payload, int id);
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void rtp_fill_header(rtp_hdr_t *rtphdr, int version, int padding, int extension, int cc, int marker, int pt, u16 seq, u32 ts, u32 ssrc);
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int rtp_parse_header(u8 *src, rtp_hdr_t *rtphdr, int is_nbo);
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void rtp_dump_header(rtp_hdr_t *rtphdr, int is_nbo);
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#endif |