Feb 2, 2007 · #include <pjsip. So you need to build Pjsip once again at pjsip directory do the following respectively : Create a media port to record streams to a WAV file. I'm unsure about the details, but the sparse documentation for PJSIP suggests it sho void pjmedia_rtcp_update(pjmedia_rtcp_session *session, const pjmedia_rtcp_session_setting *settings) Update RTCP session with the new settings. Enums enum pjmedia_aud_dev_cap This enumeration identifies various audio device capabilities. Note that the remote peer must support RTCP. This module provides functions to create and manage multimedia sessions It has stricter rules on audio routing among the pjmedia ports and has no audio mixing capability. Dec 16, 2025 · PJ Media senior columnist and associate editor Stephen Kruiser is a professional stand-up comic, writer, and recovering political activist who edits and writes PJ's Morning Briefing, aka The Dec 23, 2025 · Join PJ Media VIP during our holiday sale and use code MERRY74 for 74% off. 3 support video for iOS, 2. Copyright PJMedia. Apr 13, 2014 · pjmedia是pjsip的视频部分，官网明确提示，要想使用pjmedia离不开directshow/sdl/ffmpeg这三个库。 软件版本的限制：ffmpeg不能高于1. If it's a voice, write the original PCM frame to the file. This file is pjsip-apps/src/samples/encdec. 0. + For Windows applications built with Visual Group PJMEDIA_VID_CONF group PJMEDIA_VID_CONF Video conference bridge implementation destination. It is recommended to initialize the pjmedia_aud_param with its default values before using it: pjmedia_aud_param param; pjmedia_aud_dev_index dev_idx; pj_status_t status; dev_idx = PJMEDIA_AUD_DEFAULT_CAPTURE_DEV; status = pjmedia_aud_dev_default_param(dev_idx, &param); Since pjmedia SD is not a real VAD, another way is to use Speex codec for the VAD. The UDP media transport is the standard based media transport as described by RFC 3550/3551. The media transport (pjmedia_transport) is the object to send and receive media packets over the network. com/6504337 Call pjmedia_transport_send_rtp() and pjmedia_transport_send_rtcp() to send RTP/RTCP packets. This module implements SRTP as described by RFC 3711, using RFC 4568 as key exchange method. -benny Video User’s Guide Video is available on PJSIP version 2. A fully qualified codec ID string consists of codec name, sampling rate, and number of channels. The function pjmedia_tonegen_play () can be used to generate When application receives an RTP packet, first it should call pjmedia_rtp_decode_rtp to decode RTP header and payload, then it should call pjmedia_rtp_session_update to check whether we can process the RTP payload, and to let the RTP session updates its internal status. Terms under which this service is provided to you. This document describes how to use the video feature, mostly with PJSUA-LIB. h> (Note: the documentation of the relevant libraries should say which header files should be included to get the declaration of the APIs). The class pj::VideoMedia is also derived from pj::Media class. Implementing inband DTMF detector Currently PJMEDIA lacks built-in tone detection routine. Application can also set the specific features/capabilities when opening the audio stream by setting the flags member For incoming calls, the call instance is created in the callback function as shown above. e: pjmedia_stream_get_info () and pjmedia_vid_stream_get_info (). 0 and later (2. 4 support video for Android). If -1 is specified, then the default value will be used. h> #include <pjmedia-codec. Dec 23, 2025 · Join PJ Media VIP during our holiday sale and use code MERRY74 for 74% off. Comprehensive documentation for PJSIP Project, covering SIP, media, and NAT traversal libraries for building portable multimedia communication applications. are you running pjsua with --video or are you using "vid enable". in a nutshell you need to: install x264 $ apt-get install x264 libx264-dev download and install ssl (not mandatory) $ apt-get install openssl $ apt-get install libssl-dev With the above snippet, call call_play_digit() send inband DTMF digit to remote party. This program can be used to make calls or to receive calls from other SIP endpoint (or other siprtp program), and to display the media quality statistics at the end of the call. Jan 10, 2026 · I'll bet you're now wondering how you can enjoy all the great writing, opinions, and behind-the-scenes podcasts and videos from PJ Media without having to watch all the ads. h> #include <pjsip_ua. Jan 5, 2026 · I'll bet you're now wondering how you can enjoy all the great writing, opinions, and behind-the-scenes podcasts and videos from PJ Media without having to watch all the ads. http://paste. pj_status_t pjmedia_codec_openh264_vid_deinit(void) Unregister OpenH264 video codecs factory from the video codec manager and deinitialize the codec library. For each frame, encode the frame to know whether this frame is a silence or voice frame. These are Defines PJMEDIA_VID_CODEC_MAX_DEC_FMT_CNT PJMEDIA_VID_CODEC_MAX_FPS_CNT PJMEDIA_VID_CODEC_MGR_MAX_CODECS Declare maximum codecs 5 * This program is free software; you can redistribute it and/or modify Typedefs typedef struct pjsua_ext_snd_dev pjsua_ext_snd_dev Opaque type of extra sound device, an additional sound device beside the primary sound device (the one instantiated via pjsua_set_snd_dev () or pjsua_set_snd_dev2 ()). SDP offer and answer model is described in RFC 3264 “An Offer/Answer Model with Session Description Protocol (SDP)” . API Reference Portable Video Device API Implementor’s API Error Codes Supported devices Supported capture devices: Android Camera2 AVI virtual device AVFoundation (Mac and iOS) and UIView (iOS Group PJMEDIA_MF_DTMF_TONE_GENERATOR group PJMEDIA_MF_DTMF_TONE_GENERATOR Multi-frequency tone generator. Application should use pj_strerror (), which should be able to decode all error codes belonging to all subsystems (e. Copyright PJMedia. Dec 29, 2025 · There’s more where this came from. More PJMEDIA-VideoDev PJMEDIA Video Device API is PJMEDIA framework for cross-platform video device abstraction, with focus to video streaming applications. The media transport (pjmedia_transport) is the object to send and receive media packets over the network. If the file is set to play repeatedly, then the callback will be called multiple times. So for this, you instantiate a Speex codec. pjlib, pjmedia, pjsip, etc). Its object types also consist of capture & playback devices, and call stream. com/Salem Media. 01左右的版本）pjsip下载版本要高于2. WAV writer port supports for writing audio in uncompressed 16 bit PCM format or compressed G. The layout of the program has been Detailed Description A media session represents multimedia communication between two parties. VIP members get full access to PJ Media’s in-depth reporting and analysis — plus podcasts, live chats, and exclusive columns you won’t find elsewhere. Application should make sure to store the call instance during the lifetime of the call (that is until the call is disconnected (see Call Disconnection below)). The conference bridge provides powerful and efficient mechanism to route the video flow and combine multiple video data from multiple video sources. PJMEDIA_MAX_SDP_BANDW ¶ The PJMEDIA_MAX_SDP_BANDW macro defines maximum bandwidth information lines in a media line. 711 U-law/A-law format, this needs to be specified in flags param. Please consider becoming a PJ Media VIP member. The media transport is declared as pjmedia_transport “class”, which declares “interfaces Specify whether the third party stream has the capability of retrieving the stream info, i. Specify whether the third party stream has the capability of retrieving the stream info, i. Your membership unlocks exclusive content, podcasts, and an ad-free experience. g. h> #include <pjsip_simple. Group PJMEDIA_TRANSPORT_UDP group PJMEDIA_TRANSPORT_UDP Implementation of media transport with UDP sockets. How to resolve this? i have mic/speaker in the system but its failing to get the device. e: this class only maintains one data member, conference slot ID, and the methods are simply proxies for conference bridge operations. This sound device is also registered to conference bridge so it can be used as a normal conference bridge port, e. PJMEDIA_MAX_SDP_FMT ¶ The PJMEDIA_MAX_SDP_FMT macro defines maximum format in a media line. h> #include <pjsua. h> #include <pjmedia. This page describes tone generator media port. g: connect it to/from other ports, adjust/check audio PJMEDIA-VideoDev PJMEDIA Video Device API is PJMEDIA framework for cross-platform video device abstraction, with focus to video streaming applications. The implementation would be Application MUST acquire the port interface of the bridge by calling pjmedia_conf_get_master_port (), and connect this port interface to a sound device port by calling pjmedia_snd_port_connect (), or to a master port (pjmedia_master_port) if application doesn't want to instantiate any sound devices. A splitter/combiner splits a single stereo/multichannels audio frame into multiple audio frames to each channel when put_frame () is called, and combines mono frames Media/Audio Features Table of Contents Media/Audio Features Core Audio Features Video Features Transports Media components (Ports) Clock provider Codec Framework SDP RTP and RTCP Compile Time Settings Basic Types and Functions Endpoint Formats Media Flow Events Core PJMEDIA was designed to be applicable in broad range of systems, from desktop to mobile, embedded, and maybe even DSP. Set a field to zero to leave it unchanged. Call Properties All call properties such as state, media state, remote peer information, etc. directshow/sdl/ffmpeg在pjmedia的 pj_status_t pjmedia_wav_player_set_eof_cb(pjmedia_port *port, void *user_data, pj_status_t (*cb)(pjmedia_port *port, void *usr_data)) Register a callback to be called when the file reading has reached the end of file. PJ Media is a leading news site covering culture, politics, faith, homeland security, and more. Parameters: sd – The silence detector before_silence – Minimum duration of silence (in msec) before silence is reported. These audio capabilities indicates what features are supported by the underlying audio device implementation. A tone generator can be used to generate a single frequency sine wave or dual frequency tones such as DTMF. ubuntu. Returns: PJ_SUCCESS on success. The SDP negotiator is represented with opaque type pjmedia_sdp_neg. Feb 8, 2012 · PJSUA是一个开源的命令行SIP用户代理（软电话），用PJSIP协议，PJNATH，和PJMEDIA实现。 它虽然只有很简单的命令行界面，但是功能齐全。 SIP功能： 多个id（帐户注册）； 多个呼叫； 支持IPv6（在1. pf – Pool factory. May 20, 2020 · 边学边记录，杂乱无章 GB28181协议对SIP进行了扩展，所以也需要对pjsip源码进行适当修改，主要是SDP方面支持额外的参数y,u,f字段的扩展源码主要在pjmedia. Information Technology Laboratory National Vulnerability Database Vulnerabilities Group pjmedia_codec_config ¶ group pjmedia_codec_config Various compile time settings such as to enable/disable codecs. Warning Installing pjproject from source or from packages is no longer a supported configuration for Asterisk versions that contain the bundled version of pjproject. Jan 7, 2026 · PJ Media delivers the truth and holds the powerful accountable. are stored in pj::CallInfo class, which can be Group PJMEDIA_SDP_NEG group PJMEDIA_SDP_NEG SDP Negotiation State Machine (Offer/Answer Model, RFC 3264) The header file <pjmedia/sdp_neg. Declare the OS macros. Get all our content, all our good stuff, and none of the ads. Once you done with your session, call pjmedia_transport_close() to destroy the SRTP adapter (and optionally the actual transport which is attached to the SRTP adapter, depending on whether close_member_tp flag is set in the pjmedia_srtp_setting when This source is an example to demonstrate using SIP and RTP/RTCP framework to measure the network quality/impairment from the SIP call. As we know, media transport is separated from the stream object (which does the encoding class AudioMedia : public pj::Media Audio Media. It can be used to facilitate RTP/RTCP unicast or multicast communication. API Reference Portable Video Device API Implementor’s API Error Codes Supported devices Supported capture devices: Android Camera2 AVI virtual device AVFoundation (Mac and iOS) and UIView (iOS Sep 3, 2019 · 对相应的项目右键属性进行如下配置 对项目 pjmedia_videodev 的 VC++目录 -> 包含目录 添加 ;$ (MSBuildStartupDirectory)\include\sdl; 对项目 pjmedia_videodev 的 VC++目录 -> 库目录 添加 ;$ (MSBuildStartupDirectory)\lib; 对项目 pjmedia 的 VC++目录 -> 包含目录 添加 ;$ (MSBuildStartupDirectory)\include Apr 5, 2014 · 应宝哥建议以及更好的交流学习，这篇开始使用中文，英语就先放一放吧！要使用PJSIP中的PJMEDIA首先我们需要搭建好它所需要的环境。【环境搭建与调试】1 在 工具 加入pjmedia所需要的包含文件以及库文件2 在 项目属性 中的加入包含文件以及库文件和具体使用到的库名3 编译过程中出现无法解析外 Group PJMEDIA_TRANSPORT group PJMEDIA_TRANSPORT Transports. Contribute to pjsip/pjproject development by creating an account on GitHub. A particular codec type in PJMEDIA can be uniquely identified by two keys: by pjmedia_codec_info, or by pjmedia_codec_id string. A media session consists of one or more media streams (pjmedia_stream), where each stream represents one media line (m= line) in SDP. Currently this capability is required by smart media update and call dump. If tone detection routine is available, it should be straightforward to integrate it to the framework: Wrap the routine as PJMEDIA Port so that it can be plugged to the media framework. Jan 4, 2026 · At PJ Media, we'll cover it every step of the way and without the anti-Trump bias you'll get from the MSM — but we can only do it with your help. h> contains the declaration of SDP offer and answer negotiator. Applications get these capabilities in the pjmedia_aud_dev_info structure. Transports. Group PJMEDIA_SPLITCOMB group PJMEDIA_SPLITCOMB Split and combine multiple mono-channel media ports into a single multiple-channels media port. PJMEDIA_MAX_SDP Dec 5, 2013 · I am getting this error while using pjsip. I was unable to get this to work on the RpiB using Openh264 and after following some steps form another user on this list was able to get video working. This pj_status_t pjmedia_silence_det_set_params(pjmedia_silence_det *sd, int before_silence, int recalc_time1, int recalc_time2) Set other silence detector parameters. The media transport interface allows the library to be extended to support different types of transports to send and receive packets. 2版本中添加）； PRACK（100rel，RFC 3262）； UPDATE (RFC 3311)； OPTIONS Sep 15, 2017 · I want to use PJSIP's C API to record the incoming audio to a file on a machine with no hardware sound device . Note that any setting field that has a value of zero will not be updated. All Rights Reserved. 4. Reports of pjproject-related Asterisk issues may only be made against the bundled version. The bundled version inherits flags like DONT_OPTIMIZE and MALLOC_DEBUG from Asterisk which allows us to accurately diagnose issues across Nov 13, 2014 · sudo apt-get install libasound2-dev Pay attention that pjsip would still fail to set the default audio device since you have done the make as this package was missing. A media session represents the multimedia session that is described by SDP session descriptor. Group PJMEDIA_CONFIG group PJMEDIA_CONFIG Some compile time configuration settings. PJMEDIA_MAX_SDP_ATTR ¶ The PJMEDIA_MAX_SDP_ATTR macro defines maximum SDP attributes in media and session descriptor. Become a VIP member today —your support fuels our mission and unlocks exclusive content, podcasts, an ad-free experience, and more. The tone generator media port provides two functions to generate tones. This section describes media port to split and combine media channels in the stream. It implements Media Transport to integrate with the rest of PJMEDIA framework. This describes the video conference bridge implementation in PJMEDIA. Note that the port must be closed properly (with pjmedia_port_destroy ()) so that the WAV header can be filled with correct values (such as the file length). 25。 （建议下载1. This sample shows how to use codec. c Nov 25, 2025 · PJSIP project. Parameters Video media is similar to audio media in many ways. Parameters: session – The session settings – The new RTCP session settings. This is a lite wrapper class for audio conference bridge port, i. The power of it is it could work with encoded audio frames where conference brigde couldn't. Group PJMEDIA_TRANSPORT_SRTP ¶ group PJMEDIA_TRANSPORT_SRTP Media transport adapter to add SRTP feature to existing transports. Note that this function is only able to decode PJMEDIA Audiodev specific error code.

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