#ifndef XT_RTPPROXY_H #define XT_RTPPROXY_H #include "common_stats.h" #define RTPE_NUM_PAYLOAD_TYPES 32 #define RTPE_MAX_FORWARD_DESTINATIONS 32 #define RTPE_NUM_SSRC_TRACKING 4 struct global_stats_counter; struct xt_rtpengine_info { unsigned int id; }; struct re_address { int family; union { unsigned char ipv6[16]; uint32_t ipv4; unsigned char u8[16]; uint16_t u16[8]; uint32_t u32[4]; } u; uint16_t port; }; enum rtpengine_cipher { REC_INVALID = 0, REC_NULL, REC_AES_CM_128, REC_AES_F8, REC_AES_CM_192, REC_AES_CM_256, REC_AEAD_AES_GCM_128, REC_AEAD_AES_GCM_256, __REC_LAST }; enum rtpengine_hmac { REH_INVALID = 0, REH_NULL, REH_HMAC_SHA1, __REH_LAST }; struct rtpengine_srtp { enum rtpengine_cipher cipher; enum rtpengine_hmac hmac; unsigned char master_key[32]; unsigned int master_key_len; unsigned char master_salt[14]; unsigned int master_salt_len; unsigned int session_key_len; unsigned int session_salt_len; unsigned char mki[256]; /* XXX uses too much memory? */ unsigned int rtp_auth_tag_len; /* in bytes */ unsigned int rtcp_auth_tag_len; /* in bytes */ unsigned int mki_len; }; enum rtpengine_src_mismatch { MSM_IGNORE = 0, /* process packet as normal */ MSM_DROP, /* drop packet */ MSM_PROPAGATE, /* propagate to userspace daemon */ }; struct rtpengine_pt_output { unsigned int min_payload_len; char replace_pattern[16]; unsigned char replace_pattern_len; }; struct rtpengine_target_info { struct re_address local; struct re_address expected_src; /* for incoming packets */ enum rtpengine_src_mismatch src_mismatch; unsigned int num_destinations; // total unsigned int num_rtcp_destinations; unsigned int intercept_stream_idx; struct rtpengine_srtp decrypt; uint32_t ssrc[RTPE_NUM_SSRC_TRACKING]; // Expose the SSRC to userspace when we resync. struct ssrc_stats *ssrc_stats[RTPE_NUM_SSRC_TRACKING]; struct rtp_stats *pt_stats[RTPE_NUM_PAYLOAD_TYPES]; // must be sorted by PT unsigned int num_payload_types; struct interface_stats_block *iface_stats; // for ingress stats struct stream_stats *stats; // for ingress stats unsigned int rtcp_mux:1, dtls:1, stun:1, rtp:1, ssrc_req:1, rtp_only:1, track_ssrc:1, rtcp:1, rtcp_fw:1, rtcp_fb_fw:1, do_intercept:1, pt_filter:1, non_forwarding:1, // empty src/dst addr blackhole:1, rtp_stats:1; // requires SSRC and clock_rates to be set }; struct rtpengine_output_info { struct re_address src_addr; /* for outgoing packets */ struct re_address dst_addr; struct rtpengine_srtp encrypt; uint32_t ssrc_out[RTPE_NUM_SSRC_TRACKING]; // Rewrite SSRC uint32_t seq_offset[RTPE_NUM_SSRC_TRACKING]; // Rewrite output seq struct rtpengine_pt_output pt_output[RTPE_NUM_PAYLOAD_TYPES]; // same indexes as pt_input struct interface_stats_block *iface_stats; // for egress stats struct stream_stats *stats; // for egress stats struct ssrc_stats *ssrc_stats[RTPE_NUM_SSRC_TRACKING]; unsigned char tos; unsigned int ssrc_subst:1; }; struct rtpengine_destination_info { struct re_address local; unsigned int num; struct rtpengine_output_info output; }; struct rtpengine_call_info { unsigned int call_idx; char call_id[256]; }; struct rtpengine_stream_idx_info { unsigned int call_idx; unsigned int stream_idx; }; struct rtpengine_stream_info { struct rtpengine_stream_idx_info idx; unsigned int max_packets; char stream_name[256]; }; struct rtpengine_packet_info { unsigned int call_idx; unsigned int stream_idx; unsigned char data[]; }; enum rtpengine_command { REMG_INIT = 1, REMG_ADD_TARGET, REMG_ADD_DESTINATION, REMG_ADD_CALL, REMG_DEL_CALL, REMG_ADD_STREAM, REMG_DEL_STREAM, REMG_PACKET, REMG_DEL_TARGET, REMG_INIT_PLAY_STREAMS, REMG_GET_PACKET_STREAM, REMG_PLAY_STREAM_PACKET, REMG_PLAY_STREAM, REMG_STOP_STREAM, REMG_FREE_PACKET_STREAM, __REMG_LAST }; struct rtpengine_init_info { int last_cmd; size_t msg_size[__REMG_LAST]; struct global_stats_counter *rtpe_stats; }; struct rtpengine_command_init { enum rtpengine_command cmd; struct rtpengine_init_info init; }; struct rtpengine_play_stream_info { struct re_address src_addr; struct re_address dst_addr; unsigned char pt; uint32_t ssrc; uint32_t ts; // start TS uint16_t seq; // start seq struct rtpengine_srtp encrypt; unsigned int packet_stream_idx; struct interface_stats_block *iface_stats; // for egress stats struct stream_stats *stats; // for egress stats struct ssrc_stats *ssrc_stats; int repeat; int remove_at_end; }; struct rtpengine_play_stream_packet_info { unsigned int packet_stream_idx; unsigned long delay_ms; // first packet = 0 uint32_t delay_ts; // first packet = 0 uint32_t duration_ts; unsigned char data[]; }; struct rtpengine_command_add_target { enum rtpengine_command cmd; struct rtpengine_target_info target; }; struct rtpengine_command_del_target { enum rtpengine_command cmd; struct re_address local; }; struct rtpengine_command_destination { enum rtpengine_command cmd; struct rtpengine_destination_info destination; }; struct rtpengine_command_add_call { enum rtpengine_command cmd; struct rtpengine_call_info call; }; struct rtpengine_command_del_call { enum rtpengine_command cmd; unsigned int call_idx; }; struct rtpengine_command_add_stream { enum rtpengine_command cmd; struct rtpengine_stream_info stream; }; struct rtpengine_command_del_stream { enum rtpengine_command cmd; struct rtpengine_stream_idx_info stream; }; struct rtpengine_command_packet { enum rtpengine_command cmd; struct rtpengine_packet_info packet; }; struct rtpengine_command_init_play_streams { enum rtpengine_command cmd; unsigned int num_packet_streams; unsigned int num_play_streams; }; struct rtpengine_command_get_packet_stream { enum rtpengine_command cmd; unsigned int packet_stream_idx; // output }; struct rtpengine_command_play_stream_packet { enum rtpengine_command cmd; struct rtpengine_play_stream_packet_info play_stream_packet; }; struct rtpengine_command_play_stream { enum rtpengine_command cmd; struct rtpengine_play_stream_info info; // input unsigned int play_idx; // output }; struct rtpengine_command_stop_stream { enum rtpengine_command cmd; unsigned int play_idx; }; struct rtpengine_command_free_packet_stream { enum rtpengine_command cmd; unsigned int packet_stream_idx; }; #endif