demultiplexer

Ibevent:Reactor Reactor Model:Key parts:1) Event SourceLinux is a file descriptor, Windows is a socket or handle, here is known as a "handle set", the program on the specified handle register the event of interest, such as I/O events.2) Event demultiplexer--events Multi-channel collection and distribution mechanism (in fact, epoll, etc., directly used in reactor)The I/O multiplexing mechanisms provided by the operating system, such as SELECT and Epoll

management of the operating system resources, including: network links, open files, timers, synchronization objects and so on. Linux is a file descriptor, on Windows is the Socket or Handle , where unification is called a "handle set", and the program registers the event of interest, such as an I/O event, on the specified handle . Event demultiplexer--Events Multi-channel distribution mechanism The I/O multiplexing mechanisms provided

associated with multiple event sources.Advantages of Reactor Mode The Reactor mode isOne of the essential technologies for writing High-Performance Network ServersIt has the following advantages: Reactor mode framework The following components are required to use the Reactor model:Event source, Reactor framework, multiplexing mechanism, and event processing program. Overall Reactor model framework Reactor Model UML Handle event Source Handle represents the resources managed by the operati

one.　　 　　 1. source of the event Linux is a file descriptor, Windows is a socket or handle, here is known as a "handle set", the program on the specified handle register the event of interest, such as I/O events. 　　 2. vent demultiplexer--Event Multi-channel distribution mechanism The I/O multiplexing mechanisms provided by the operating system, such as SELECT and Epo

use of CPU resources;4) reusability, the reactor framework itself is independent of the specific event handling logic and has high reusability;3.reactor FrameUsing the Reactor model, several components are required: Event source, Reactor framework, multiplexing mechanism, and event handlers1) Event SourceLinux is a file descriptor, Windows is a Socket or Handle, here is known as a "handle set", the program on the specified handle register the event of interest, such as I/O events.2) event

look at the overall framework of the reactor model, and then describe each component one by one.1) Event SourceLinux is a file descriptor, Windows is a socket or handle, here is known as a "handle set", the program on the specified handle register the event of interest, such as I/O events. 2) Event demultiplexer--multi-channel distribution mechanismthe I/O multiplexing mechanisms provided by the operating system, such as SELECT and Epoll. The program

component one by one. 1) event SourceLinux is a file descriptor, while Windows is a socket or handle, which is called a "handle set". A program registers events of interest on the specified handle, such as I/O events. 2) event demultiplexer-multi-channel event distribution mechanismI/O multiplexing mechanisms provided by the operating system, such as select and epoll.The program first registers the handle (event source) and its event to event

tunerequest object and set its LocatorCcomptr pitunerequest = NULL;Pidvbstuningspace-> createtunerequest ( pitunerequest );Ccomqiptr pidvbtunerequest (pitunerequest );Pidvbtunerequest-> put_locator (plocatorval ); The above Code creates a tuning request object (pointer: pidvbtunerequest) to provide it to the network provider filter. The Code does not set the priority Selection Component list, so each output pin of the MPEG-2 demultiplexer filter will

third: Selector.select () Checks whether there is a ready event, and if not, it blocks until the Ready event function returns. reactor There is an article very well written: http://www.blogjava.net/DLevin/archive/2015/09/02/427045.htmlYou can have a look, I'll emphasize the point here. Graphic:1. Handle: In network programming, this is generally referred to as a socket Handle, a network connection (Connection, channel in Java NIO). This channel is registered in synchronous event

4.5.1.30-3ivx Muxer Filter 4.5.1.30-3ivx Splitter 4.5.1.30‧ ASUS-ASUS V2 Video Decoder 1.00‧ Core-CoreAAC Audio Decoder 1.1.0.133-CoreFLAC Audio Decoder 0.2.0.19-CoreFLAC Audio Encoder 0.2.1.1-CoreVorbis Audio Decoder‧ CyberLink-CyberLink DVD Navigation Filter 5.00.1031-CyberLink MPEG-2 Video-SP Decoder 5.0.1031-CyberLink Line21 (Video) Decoder 4.0.3030‧ DivX-DivX 3.2 MPEG-4 Video Decoder 4.1.0.3917-DivX 5 Video Decoder 5.1.1.1031‧ Elecard-Elecard File List Source 2.1.0.30325-Elecard MPEG-2

?? Reactor is a pattern proposed by Schmidt, Douglas C, which is widely used in high concurrency server implementations.The change mode uses event-driven mode, and when the event occurs, the corresponding event-handling code (Handler) is called.This pattern is the basis for high concurrency server. such as Nginx and LIGHTTPD.These two scenarios are ideal for large concurrency, but each with a very fast handling of requests.The usual web interview is this feature.structureContains 5 parts, handle

-Voxware Metasound/metavoice Codec-WavPack Audio DirectShow Splitter 1.0.3.277 Decoder 1.0.3.4314. Ffdshow Tryouts Rev918 XXL5.Splitter-AAC parser Filter for DirectShow v 1.1.0-Ac3/dts Filter-Gabest Avi Splitter 1.0.0.7-CyberLink MPEG-2 dempltiplexer 1.0.0.3726-DSM Splitter 1.0.0.5 DirectShow Media muxer 1.0.0.4-Elecard MPEG demultiplexer 1.0.74.60725-Gabest FLV Splitter 1.0.0.1-Haali Media Splitter 2007.2.1 does not contain OGG separator-Matroska S

Decoder 1.00‧core-COREAAC Audio Decoder 1.1.0.642-Coreflac Audio Decoder 0.2.0.19-Coreflac Audio Encoder 0.2.1.1-Corevorbis Audio Decoder‧cyberlink-CyberLink DVD navigation Filter 5.00.1031-CyberLink MPEG-2 video-sp Decoder 5.0.1031-CyberLink Line21 (video) Decoder 4.0.3030‧divx-DivX 3.2 MPEG-4 video Decoder 4.1.0.3917-DivX 5 Video Decoder 5.1.1.1031‧elecard-Elecard File List Source 2.1.0.30325-Elecard MPEG-2 demultiplexer 2.0.90.30529-Elecard MPEG-2

contains two nodes , you can also split it into two filter , each filter contains a node . common node Yes network provider , tuner , demodulator and capture , network provider currently, many filters are available, you may need to modify DMB . You can use it most of the time; Tunner and demodulator it is now placed in the same filter , Tunner filter ; capture filter is the core part, reads data from hardware and transmits data back

filter. For example, in the figure above, a filter can contain two nodes or be split into two filters. Each filter contains one node, see what you like. Common nodes include network provider, tuner, demodulator, capture, and network.The provider currently has many ready-made filters available, which may need to be modified when DMB is used. Most of the time they can be used directly. Tunner and demodulator are now placed in the same filter, called Tunner.Filter; capture filter is the core part.

processing.ContrastSimply record this "pure version" video decoder using only Libavcodec and the different video decoders that use Libavcodec+libavformat.PS: Using the Libavcodec+libavformat decoder reference article "(1) The following functions related to Libavformat do not exist in the "pure version" video decoder. Av_register_all (): Register all codecs, multiplexing/demultiplexer components, etc. where Avcodec_register_all () is called

associated with it. If not, Tif will create a default locator for it.The network provider filter then requires the tuning tuner to tune to the correct frequency and set the parameter information required by the tuner, such as the forward correction (FEC) rate. After the tuner receives the signal, it forwards it to the capture filter of the receiver ), the capture filter digitizes the signal and sends the digital MPEG-2 transmission stream to the MPEG-2 demu