WEBRTC use of audio and video engines
At the request of the group of brothers, now how to use WEBRTC audio and video demo put out. Code format is very bad, you look at the spectators do not bother to tidy up.
#include
This article provides an overview of the WEBRTC audio processing flow, as shown in the following diagram:
WebRTC an audio session is abstracted into a channel, such as A and b for audio calls, a needs to establish a channel and b for audio data transmission. The figure above has three channel, each channel contains codec and real-time Transport protocol (real-time Transport Protocol,RTP)/ The real-time Tra
output signal of the filter and the desired response, which is to ask for a gradient.
The AEC algorithm in WEBRTC belongs to the piecewise fast frequency domain Adaptive filtering algorithm, partioned block Frequeney Domain Adaptive filter (PBFDAF).To determine whether the distal and proximal end of the conversation, also known as double-ended detection, the following four conditions need to be monitored:1. Only the far end to speak, at this time the
Webrtc packages criticalsection, which can be used in windows and posix platforms.
The basic structure is as follows:
In the factory method, you are responsible for the creation of specific class objects, which can be called a simple factory model. A factory is responsible for the creation of all products, different products are created by inputting necessary parameters to the factory. Generally, the created products are related and inherited from an
Previous notes, finishingWEBRTC uses UDP transport by default, but it can also be transmitted over TCP.With TCP transport, servers such as Turnserver,licode,janus and servers are required.1. If you use Turnserver, you only need the client to keep the relaytcp type of candidate, the others are discarded.2. If you are using a server such as Licode,janus, TCP is not supported by default.Because they are used at the bottom of the Libnice open-source Ice library, Libnice supports TCP in newer version
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Minframeinterval
The minimum frame duration, in 100-nanosecond units. This value is applies only to capture filters.
Maxframeinterval
The maximum frame duration, in 100-nanosecond units. This value is applies only to capture filters.
Minbitspersecond
Minimum Data Rate this pin can produce.
Note Deprecated.
Maxbitspersecond
1, first look at the simplest SSE:Only use the SSE-enabled browser (most), the browser built-in EventSource object, the object by default three seconds to refresh the response data.HTML code (taken from W3cschool):DOCTYPE HTML>HTML>Head>Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8" />Head>Body>H1>Get server-side update dataH1>DivID= "Result">Div>Script>if(typeof(EventSource)!=="undefined") {varSource=NewEventSource ("Socket");//parameter for request link Source.onmessage=fun
I. Environment
Refer to the previous article: WEBRTC Learning Three: recording and playback
Two. Implement
The network communication protocol is not explicitly specified in the Voiceengine, so voice chat is not possible only by calling the Voiceengine API. Voenetwork provides method registerexternaltransp
In the previous article (WEBRTC Audio-related Neteq (ii): Data structure) Neteq the main data structures, to understand the mechanism of Neteq lay a good foundation. This article is mainly about how the RTP packets received from the network in the MCU are put into packet buffer and taken out from packet buffer, as well as the calculation of the network delay value (optbuflevel) and the jitter buffer delay value (bufflevelfilt). Let's see how RTP voice
After Ubuntu16.04 is installed in Cuda and CUDNN, install Tensorflow,tensorflow and OPENCV can download the corresponding installation package on the Internet and install it directly from Pip and Conda directly under the path where the installation package is located, as shown in:The prerequisite is to download a good installation package. After installing TensorFlow, you also need to add the system path in
Install Firefox 16.04 beta in Ubuntu 48.0
Mozilla Firefox test version 48.0 was recently released by the Mozilla team. A notable feature is the download of malware, the improvement of WebRTC technology, the new design of the result panel in the URL bar, and more enhanced protection.Mozilla Firefox 48.0 beta update log:
New
Enhanced protection against malware downloads
How to install it with a Chinese cabbage USB flash drive: Install the Win7 system, and then install the Chinese cabbage win7
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It is understood that many people have installed dual systems before, but since the birth of VMware, it has brought more convenience to people.
1. Install VMware Workstation
Because it is in Windows, you can choose to download it from the official VMware website or from the websites such as huajun or Pacific. The installation process is similar to other software in windows. You can click Next to install
How to install Win10, how to install Win10 system via hard disk, and how to install win10
How to install the system in the Win10 file on the hard disk. For WIN8/8.1, double-click the SETUP file to directly decompress the package, but the system kernel must be correct. For example, a 32-bit WIN8.1-to-WIN10 32-bit syste
1. Install EclipseA. Download the Linux version of Eclipse, unzip it into your tool directory, unzip it into the directory to run the program, if the following error occurs, you need to install the Java Runtime Environment JREB. Before installing the JRE, try running java-version to see if Java is installed, if you do not have the following prompt, the main idea is that you do not have Java installed, the p
How to install Ubuntu, this self Baidu. Site Specific installation: http://www.ubuntu.comI installed the Ubuntu Server version and then the full English installation. So its source is automatically positioned to the United StatesHere's how to change the source, the first one is the operation. The second is a detailed explanation of the operation.1 //Inside the specific input command,//indicates the content of the comment, do not need tube2sudo su-Root
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