sdp

I am writing an Android app that should exchange data to a server over Bluetooth, with the server side on a PC running Ubuntu, using the bluez library, in C (or C++). My Android app fails (IOException) when I try to connect to my server socket on the PC. Here is essentially what I in the java code (in Android, full eclipse project here: http://dl.dropbox.com/u/2968234/ThinBTClient.zip ) private static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); private static String address = "00:02:72:B2:85:C7"; // Hard coded for simplicity private BluetoothAdapter

I had anapplication to stream video(without audio) from android device(Blaze board) to PC. For that, I'm using vlc player to view streamed video by using the following command in command line vlc stream.sdp This .sdp file would be generated from my application. By using the above command, I can stream from blaze board to PC with the delay of 1 sec. Now, My problem is that, I have to stream from one blaze board to another blaze board. I have searched a lot. But, Nothing is worked. I have an idea to write viewer application ( For client ). This application will use sdp file path as url. I refer

一 Bluetooth 基本概念 3 二 AndroidBluetooth 架构 3 2.1Bluetooth 架构图 3 2.2Bluetooth 代码层次结构 3 三 Bluetooth 协议栈分析 4 3.1 蓝牙协议栈 4 3.2Android 与蓝牙协议栈的关系 6 四 Bluetooth 之 HCI 层分析 6 4.1HCI 层与基带的通信方式 6 4.2 包的分析及研究 7 4.3 通信过程的研究与分析 8 五 Bluetooth 之编程实现 8 5.1HCI 层编程 8 5.2L2CAP 层编程 11 5.3SDP 层编程 13 六 Bluetooth 之启动过程实现 14 6.1Bluetooth 启动步骤 14 6.2Bluetooth 启动流程 15 6.3Bluetooth 数据流向 15 6.4Bluez 控制流程 15 6.5Bluetooth 启动过程分析 16 七 Bluetooth 之驱动移植 17 7.1android 系统配置 17 7.2 启动项修改 17 7.3 电源管理 rfkill 驱动 17 7.4Rebuild Android image and reboot 18 7.5 实现 BT 睡眠唤醒机制 18 7.6 系统集成 19 八 Bluetooth 之调试与编译 19 8.1Bluetooth 驱动调试 19 8

I've been googling a way to change codec in Chrome's implementation of WebRTC, but there doesn't seem to be a way. How can I change the default codec used(audio or video) in a WebRTCpeer connection in Chrome? Yes, you can change the codec to be anything you want...as long as Chrome supports it. Right now, audio wise, the only supported codecs are PCMA, PCMU, ISAC, and OPUS(the default). For Video you have VP8(also H264 on some systems with FireFox). To use any of these codecs as default, you must modify your SDP before setting it locally in your peerconnection and sending your offer/answer. I

I've managed to set up a SIP call using the JAIN-SIP API for Java. Now I would like to stream some video once a dialog has been established. I've read that this is possible with SDP and RTP, and I've found multiple examples on how to define a SDP/RTP body in a SIP packet. But once you have negotiated capability etc. on nodes, how do you actually start the RTP stream? Do you start an RTP streaming server outside or inside your Java application? If so, how? What is the link? In what I'm able to find online, nodes just "start exchanging RTP packets". Thank you. You need an RTP stack. As you are

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I get RTP stream from WebRTC server (I used mediasoup ) using node.js and I get the decrypted RTP packets raw data from the stream. I want to forward this RTP data to ffmpeg and from there I can save it to file, or push it as RTMP stream to other media servers. I guess that the best way would be to create SDP file that describes both the audio and video streams and send the packets therough new sockets. The ffmpeg command is: ffmpeg - loglevel debug - protocol_whitelist file , crypto , udp , rtp - re - vcodec libvpx - acodec opus -

不需要修改任何代码，直接运行就可以了 function getUserIP(onNewIP) { // onNewIp - your listener function for new IPs //compatibility for firefox and chrome var myPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection; var pc = new myPeerConnection({ iceServers: [] }), noop = function() {}, localIPs = {}, ipRegex = /([0-9]{1,3}(\.[0-9]{1,3}){3}|[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7})/g, key; function iterateIP(ip) { if (!localIPs[ip]) onNewIP(ip); localIPs[ip] = true; } //create a bogus data channel pc.createDataChannel(""); // create offer and set local description pc

一直以来都觉得搞软件的特NB，为什么这样讲呢？因为搞软件的可以定义安全、定义存储、定义网络、定义…… 感觉和技术有关，软件什么都能定义亦或者还要重新定义，而今天我们要讲的SDP也被软件定义了，定义的是边界。 什么是SDP？ SDP的全称是Software Defined Perimeter，软件定义边界，它是由云安全联盟（CSA）提出的一个概念。 不喜欢说那么多高深莫测的话，抛开“专业术语”来看，其实可以把SDP比作一个软件做出来的网关来理解，就是用可控的逻辑组件替代物理设备，通过软件对访问者进行设备认证及身份认证，通过认证后授信的访问者才可以对于应用基础设施的访问。 SDP主要分成两部分：即主机和控制器（Controller）。 主机有两个任务，即创建或者接受链接，创建连接的主机叫（IH）、接受连接的主机命名（AH）。 控制器的任务则是对主机进行认证和下发策略，主机和控制器之间通过一个安全的控制信道进行交互。 红芯隐盾的SDP？ 我上篇文章提过，红芯面对的客户是政府和事业单位，比如医疗系统、公安系统、政务办公系统、敏感数据比较多的体系，这些体系的内部系统，大部分都是自有的“小机房”私有化部署的。 前些年也没有什么特定的标准化，各级单位或企业虽然按照一个需求标准，但是都是通过从当地寻找“服务商”来做，除了技术参差不齐以外，运维、安全这些也是很难跟的上的。 虽然是私有化部署

Identify h264 profile and level from profile-level-id in sdp? How does one identify what the constraints actually mean? For example I have a profile-type-id: 42801e that translates to: How am I to relate that to the features defined in the table here ? The above reference identified that the Constraint_set0_flag: 1 means that it's the Constrained Baseline Profile . But how to relate the flag to the three different NO's (from the table) that differentiate the Baseline profile from the Constrained Baseline Profile ? Update Can't confirm that the above, about identifying the Constrained Baseline