real-time

How do I implement real time front end updates using node.js + Ruby on Rails?

What is the best way to implement real time updates in ruby on rails using node.js? It would be great to hear either real examples or your thoughts on alternative solutions. ...

Real-Time Data Streaming to Multiple Clients

Hi all, I would like to write an application which will stream data at 2400 baud over the internet from a server to multiple clients. The data will be the same for each client, and it would probably be fine to send it as a UDP stream, since exact data accuracy is not a 100% necessity, as there are checksums built-in to the data format a...

IPC speed and compare

I am trying to implement a real-time application which involves IPC across different modules. The modules are doing some data intensive processing. I am using message queue as the backbone(Activemq) for IPC in the prototype, which is easy(considering I am a totally IPC newbie), but it's very very slow. Here is my situation: I have i...

Binding different real time updated ObservableCollection to same userControl template

I have a UserControl with template property on, and a listView where i want to bind my collections. I use them for a multiple window interface. How can i bind on several different windows (child template), different collection which are updated in real time. My example is for a sniffer with multiple interfaces packet capturing. Thank u ...

Can php listen for a mysql database change or update? ...thinking real-time, live search here

Im trying to think of the best way to handle real time search for a website. The only solution I can come up with is to keep checking the server every few seconds for something new in the database, but that does not seem very practical to me. ...

getting close to real-time with hadoop

I need some good references for using Hadoop for real-time systems like searching with little response time. I know hadoop has its overhead of hdfs, but whats the best way of doing this with hadoop. ...

How can I improve my real-time behavior in multi-threaded app using pthreads and condition variables?

I have a multi-threaded application that is using pthreads. I have a mutex() lock and condition variables(). There are two threads, one thread is producing data for the second thread, a worker, which is trying to process the produced data in a real time fashion such that one chuck is processed as close to the elapsing of a fixed time p...

Real time object tracking in java(some java API) or C#(emgucv,dshownet,Aforge.NET)

Hello there, I am doing a project called user initiated real time object tracking system. Here, is what I want to happen in the project: 1) Take a continuous stream from a web camera. 2) Using the mouse a user can draw a square, around an object of interest. 3) Then from there onwards, the square moves along with the object of intere...

Any reason why I shouldn't use couchdb for message passing or realtime activity streams?

While using ampq or xmpp (rabbitmq or ejabbered that could have couchdb as backends) seems like a good fit to deliver real time updates about friend state in a social gaming platform where updates are small but frequent, I can't help but think why wouldn't couchdb be a good platform to deliver such updates? The main advantage I could th...

how to insert audio inside video with ffmpeg??

Hi, I create a video with image in real time. I need to add at this audio in real time. I record audio with AVAudioSession but this create a file, i need to get a byte, what library must i use?? thanks ...

How and when do browsers implement real-time changes to a document's DOM?

My website dynamically embeds an external Javascript file into the head tag. The external Javascript defines a global variable myString = "data". At what point does myString become accessible to Javascript within the website? <html> <head> <script type="text/javascript"> myString = null; external = document.createEle...

Real time SQL database updates between multiple VB.NET clients

Hi, I hope somebody can help me out on this question. I'm using a SQL database and I'm writing a VB.NET client application. This application is used on multiple computers at the same time. If one of the clients makes an update to the database I would like to have the other clients to be aware of the update. Has ony one already done th...

How to convert a Ada.Real_TIme.Time to a string?

I would like to write a Ada.Real_Time.Time in a file, How can I do that? Thanks ...

Realtime processing and callbacks with Python and C++

I need to write code to do some realtime processing that is fairly computationally complex. I would like to create some Python classes to manage all my scripting, and leave the intensive parts of the algorithm coded in C++ so that they can run as fast as possible. I would like to instantiate the objects in Python, and have the C++ algor...

2d terrain generation in real time

Hey, I'm trying to create a game similar to this (Note:When you click 'play', there are SFX in the game which you can't seem to turn off, so you may want to check volume). In particular, I'm interested in knowing how the 'infinite' landscape is generated. Are there any tutorials/articles describing this? I came across procedural genera...

ADA Real_time string

Possible duplicate: How to convert a Ada.Real_TIme.Time to a string? How can I convert a Time type obtained with a Ada.Real_Time.Clock to a String type in Ada ? ...

Which parts of Graphics Pipelines are done using CPU & GPU?

Which parts of pipelines are done using CPU and which are done using GPU? Reading Wikipedia on Graphics Pipeline, maybe my question does not precisely represent what I am asking. Referring to this question, which "steps" are done in CPU and which are done in GPU? Edit: My question is more into which parts of logical high level steps n...

How to quickly acquire and process real time screen output

I am trying to write a program to play a full screen PC game for fun (as an experiment in Computer Vision and Artificial Intelligence). For this experiment I am assuming the game has no underlying API for AI players (nor is the source available) so I intend to process the visual information rendered by the game on the screen. The game ...

C# .NET Socket realtime video Block unblock

when i send realtime media message, socket were blocked and shut down itself. how can i deal with this case? some answers are buffer is not large enough,so can someone give me some demo?thanks ...

I'm writing an application that implements a questionnaire. Does qualify as being a real-time application?

Keeping it simple, I have a server and client. The server sends questions one by one and the client the answers, as soon as they are given. So, would you say this application is real time? ...