Hi, I am trying to create real-time and collaborative application like - google wave for example. When user1 writes something at the same time it shows on user2 screens. I started a little research,and found some ways to this with Ajax - 1.every X seconds send request to the server and to check what is "happening" 2.timeout - long re...
I'm trying to figure out how to write an app that can decode audio morse code on the fly. I found this document which explains how to record audio from the microphone in Android. What I'd like to know is whether it's possible to access the raw input from the microphone or whether it has to be written/read to a file. Thanks. ...
Basically I'm looking for something that would easily enable me to display a world map onscreen (most likely would consume the entire size of the window, not that this should matter) and get pixel based coordinates for certain real-world coordinates, which would then be used to visualize some data periodically obtained from the server (w...
Hello, We're developing a medical appliance and are wondering if there's a WPF chart that is able to receive new data every 10ms and present it. We tried ChartFX and DynamicDataDisplay and neither is good enough for this challenge. We'd appreciate any suggestions. ...
Hi, I'm looking for a lock-free design conforming to these requisites: a single writer writes into a structure and a single reader reads from this structure (this structure exists already and is safe for simultaneous read/write) but at some time, the structure needs to be changed by the writer, which then initialises, switches and writ...
I've set myself the task of implementing a real time MIDI application. Like all the other software I've written to date, I began by coding. I implemented a tiny GUI (GTK2) application that can control the transport state of the Jack Audio Connection Kit and its clients. I have never written a real-time application before, and have only ...
I'm working on a realtime imaging system. UI thread: grabs images from a camera at 14 fps via timer and does some processing/display. Every 2 seconds, 3 images (about 1mb on disk each) are selected by processing to be written to disk. These are put in a shared queue. Second thread: dequeues images and writes to disk. Has been given 'Lo...
I'm having some trouble achieving adequate real-time performance from my application and am wondering if I've architected it suboptimally. The requirement is for the application to play a sound and draw a line on a Canvas at a user specified time interval. I have a Thread that sleeps for the user-specified time interval, wakes up and u...
I'm implementing a remote application. The server will process & render data in real time as animation. (a series of images, to be precise) Each time, an image is rendered, it will be transferred to the receiving iPhone client via UDP. I have studied some UDP and I am aware of the following: UDP has max size of about 65k. However, it...
Hello good people of SO. I am building a flash media player for an live audio stream. The server is set up to stream from a url that looks like so: rtmp://ourwowzaserver.net:80/ourfiledirectory the instructions i have found say to first set the directory: nc.connect("rtmp://ourwowzaserver.net:80/ourfiledirectory"); and then late...
Say you have a typical game-loop, running about 30 times a second. One particular function takes about 50% of the time and looks like a prime candidate for parallelization - say it's a big loop or there are 4 distinct and independent strands of work going on. Assume we already checked that the function itself can parallelize well in isol...
I have created a blogging system with php+postgresql. Now I want to add a web chat ( in REAL TIME for Million of users simultaneously ) where every message is saved in database. I am thinking to use Erlang+Mnesia on a different webserver for this issue. Message's table will be like this: message_id, user_id, message, date user_id sho...
This is a very newbie question. I want to know how to create a WEB APP to make Call ( using VOIP protocoll I think ). What program languages do I have to learn ( client and server side ) ? ...
is there a way to create a P2P web-chat without any server ? ...
What is the more efficient way to create a web video chat ? What tecnologies ? What server side and client side languages ? What type fo server ? etc . Thanks ;) ...
Hi at all, I need to create a voip application ( like msn ). What do I need in general ? ...
Could you tell me some http-streaming tutorial or example ( used also by Gmail ) ? I want to create a simple chat for college project. Attention: I am talking about Http-streaming and NOT long-polling. Thanks ;) ...
I've been trying to figure out what is the appropriate way to render real-time data as a line graph in WPF. And by real-time I actually mean, data that is being collected from a USB device that generates data at a rate of approximately 40Hz. There are multiple (up to 7) streams of data that I'm reading at 40Hz in an asynchronous fashion....
Well, I tried to ask this question as a comment on this question, but I thought that maybe no one will notice it, so I decided to ask it as a separate one. The question is about how to do real-time GPS tracking system things; if we have the following scenario: Rather than connecting a GPS receiver to a PC, the user will have a mobile...
Hi, I am attempting to write an real-time image processing application on the iphone. Currently, I am taking pictures with takepicture method (the uiGetScreeImage output has a too low resolution) but since I receive a UImage from the ImagePickerController, which is 3Mpixels, I have to draw it onto a context and that takes a lot of time...