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  • [SOLVED]Port C's fread(&struct,....) to Python

    - by user287669
    Hey, I'm really struggling with this one. I'am trying to port a small piece of someone else's code to Python and this is what I have: typedef struct { uint8_t Y[LUMA_HEIGHT][LUMA_WIDTH]; uint8_t Cb[CHROMA_HEIGHT][CHROMA_WIDTH]; uint8_t Cr[CHROMA_HEIGHT][CHROMA_WIDTH]; } __attribute__((__packed__)) frame_t; frame_t frame; while (! feof(stdin)) { fread(&frame, 1, sizeof(frame), stdin); // DO SOME STUFF } Later I need to access the data like so: frame.Y[x][y] So I made a Class 'frame' in Python and inserted the corresponding variables(frame.Y, frame.Cb, frame.Cr). I have tried to sequentially map the data from Y[0][0] to Cr[MAX][MAX], even printed out the C struct in action but didn't manage to wrap my head around the method used to put the data in there. I've been struggling overnight with this and have to get back to the army tonight, so any immediate help is very welcome and appreciated. Thanks

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  • Help to run it in the background

    - by AlexPolo
    Here's a simple python daemon I can't manage to run as a background process: #!/usr/bin/env python import socket host = '' port = 843 backlog = 5 size = 1024 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.bind((host,port)) s.listen(backlog) while 1: client, address = s.accept() data = client.recv(size) if data == '<policy-file-request/>\0': client.send('<?xml version="1.0"?><cross-domain-policy><allow-access-from domain="*" to-ports="*"/></cross-domain-policy>') client.close() It's a socket policy file server (you may have heard of the restiction Adope put on socket connection - http://www.adobe.com/devnet/flashplayer/articles/socket_policy_files.html); that works well when gets run like an "ordinary" process - "python that_server.py", - but I get problem to run it in the background. Running like so: "that_server.py &", - does not work.

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

    - by Up
    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 think of is its ability to filter updates based on friends and availability of changes api, which makes developing such an application and managing it (including replication) quite easy compared to ampq or xmpp where you have to think about how to manage the pubsub nodes and who is subscribed to them at any point in time. However, I can't help but think this is too good to be true, I can't find information on what couchdb's shortcomings are. Somehow, it feels like using MySQL for message passing which is why I am hesitant to using it. Anyone have any experience in using couchdb for such applications? would you recommend another platform to use?

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  • Live output from .jar executed by PHP

    - by user2926097
    I have a php-script which executes a .jar-file: <?php passthru("java -jar nlp-server.jar 9000"); ?> I want to display the output generated by this .jar-file on a website. The problematic part is the fact that the .jar-file doesnt finish executing because its a server-application. Thus navigating to the php-file wont help and I didnt manage to make AJAX work either. Is there a way to display the "live" output of the .jar-file on a website?

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  • SubProject OR SubFolder ?

    - by user300435
    I am writing an asp.net application that exposes data in 2 ways: 1 - 1 common section that all users can see 2 - a Section that displays data specific to a registered user. in this case the user can decide how it looks (through themes), and manage the data to be displayed. Of course, the logic behind is the same, appearance would be different for as user1 and user2 The questions are : What would be best using : 'http://www.site.com/User1' or 'http://user1.site.com'. knowing that in both cases i have to make the displayed pages look like a seperate site then the root domain in anycase, the pages that will be displayed and customized on the fly are located in a subfolder of the of the asp.net project (projectrootpath\personalpages). What is the best way to map the personalpages subfolder to a subdomain or a 'http://www.site.com/userX' in the address bar. i also use "~/" in the urls which in this case needs to point to the personalpages rather then the root . Any help is gretaly apreciated.

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  • MVC design pattern - who loads view initially

    - by enableDeepak
    This query is about MVC design pattern in general and not ASP.net MVC framework I understand in MVC (desktop application): 1. User clicks something in view 2. this is passed on to controller to manage 3. controller makes some changes in Model 4. Model calls method on view which has the logic to refresh UI Questions around these: Q1) Can controller also modify View or Model only updates View? Q2) When screen loads for the first time, there is no Model change. Then, who fetches data from model and populates view? View directly calls Model and populates itself OR controller gets data and passes to view method OR some dummy event is raised at Model which updates View?

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  • interface builder breaks on dual display

    - by madmik3
    Hi, I frequently connect and disconnect my laptop from a secondary display. Additionally I work in a small group that uses svn to manage xib files. It seems that if you drag a UIView display into a secondary display in interface builder and save the xib then either disconnect that display or open it on a computer with a secondary display in a different postion (left v right of the screen for example) then the view can't be seen/closed/moved. I've found no work around other than attaching a secondary display in the same position. This can be a real pain. Has anyone found a solution to this? thanks.

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  • Using WCF to expose underlying process

    - by Steven
    I have a server application that spins up and monitors about 8 separate processes that gather data from different systems. The server app then runs some calculations over the aggregated data and stores it in a db. Simple stuff. I now have a requirement to modify the process so that it no longer saves data to the db but rather exposes it directly to clients via WCF. That's cool, I've used WCF a fair bit but I'm struggling a little with it for some reason. Basically my plan is to HOST the WCF service in my application and have calls redirect into the internals of my existing application but I can figure out how to do that without getting the WCF class to encapsulate the existing app. I want the service to inside my current app, not become it. Any suggestions?

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  • AS3 try/catch out of memory

    - by StfnoPad
    Hi, I'm loading a few huge images on my flex/as3 app, but I can't manage to catch the error when the flash player runs out of memory. Here is the what I was thinking might work (I use ???? because i dont know what to catch): try{ images = new Array(frames); for (var i:uint = 0; i < frames; i++){ imagesBA[i] = new BitmapData(width, height, false, 0x000000FF); } } catch(error:????){ Alert.show("Out of memory!"); } Any idea what ???? can be? Or does anyone knows how to catch when there is no memory for a variable?

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  • Adapting Android Bluetooth Chat for multiple devices

    - by Megh
    Hello, I'm doing a college project on Bluetooth for Android, and I'm trying to understand how to manage communication between multiple connected devices. Eventually I'm going to develop a multiplayer Bluetooth Game. Currently I've adapted Android's sample app BluetoothChat to connect my three Nexxus One phones. 1 connects to 2 who connects to 3 1 sends its messages successfully to 2. 3 sends its messages successfully to 2 as well. 2 can send its messages successfully to 1 and 3, as it shares a ConnectedThread with both. But I can't figure out how to handle getting communication from 1 to 3. Does anyone have any examples of communication between multiple devices or has done this themselves? Thanks

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  • Precision problems of real numbers in Fortran

    - by saladoil
    I've been trying to use Fortran for my research project, with the GNU Fortran compiler (gfortran), latest version, but I've been encountering some problems in the way it processes real numbers. If you have for example the code: program test implicit none real :: y = 23.234, z z = y * 100000 write(*,*) y, z end program You'll get as output: 23.23999 2323400.0. I find this really strange. Can someone tell me what's exactly happening here? Looking at z I can see that y does retain its precision, so for calculations that shouldn't be a problem I suppose. But why is the output of y not exactly the same as the value that I've specified, and what can I do to make it exactly the same?

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  • How to prompt user input parameters for SQL Queries in Access 2010

    - by user1848907
    SELECT Transactions.TransactionNumber FROM Transactions WHERE (((Transactions.Date)>=#11/23/12#)) AND (((Transactions.Date)<=#11/23/12#)); The above code returns all the transaction that happened between the specified dates. But I want those dates to be defined by the user every time the query is executed. I tried using the [] operators to have the user define the criteria in the WHERE, something like this: WHERE (((Transactions.Date)>=[Input a Date])) AND (((Transactions.Date)<=[Input a Date])); But microsoft Access throws a Syntax error message. The same happens when I include the # (date operators) like this WHERE (((Transactions.Date)>=#[Input a Date]#)) AND (((Transactions.Date)<=#[Input a Date]#)); Is there anopther way to manage dates that I'm not aware of or is asking a user for dates in a query out of the question

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  • Maven workspace resolution horked

    - by user237815
    I'm using m2eclipse to manage maven projects. Somehow I did a bad thing, and now the system is behaving as if workspace resolution is disabled. I have several projects that depend on a main project. This project has a version of 4.0-SNAPSHOT, and all the dependent projects reference it in the dependencies section of their poms. Everything was working fine until I created an entirely new project and mistakenly copied the pom from the main project into the new project. Suddenly, all of the dependent projects got the error: "The container 'Maven Dependencies" references non existing library C:\users\myusername.m2\com\mydomain\myproject\4.0-SNAPSHOT\myproject-4.0-SNAPSHOT.jar I zapped the offending new project, but the error remains for all the dependent projects. I've made no changes (to my knowledge) in the main project or any of the dependent projects, so I'm guessing something got changed in the Eclipse environment. Does m2eclipse or Maven itself maintain settings anywhere that I can blow away?

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  • Filemaker XSL 20sec Query Latency

    - by Ian Wetherbee
    I have an ASP frontend that loads data from a Filemaker database using XSL to perform simple queries. The problem is that the first page load takes 20 seconds +/- 200ms, then the next few page refreshes within a minute of the first request take <200ms, then the cycle starts over again. Each page load makes only 2 XSL queries, and they execute fast after the first page load, so what is causing the delay on the first page load? I have caching turned up with a 100% hit rate, and number of connections at 100. I've tried with XSL database sessions on and off, and session time anywhere from 1 to 60 minutes without any changes. The XSL loads from ASP use a GET request and add a Basic Authorization header to authenticate each time. During fast page requests, the fmserver.exe and fmswpc.exe processes don't even flinch, but during a 20 second holdup I see fmserver jump to 30% CPU and a 3mb I/O read a few seconds into the request, and occasionally fmswpc jump to 60% CPU.

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  • Javascript 'class' and singleton problems

    - by Kucebe
    I have a singleton object that use another object (not singleton), to require some info to server: var singleton = (function(){ /*_private properties*/ var myRequestManager = new RequestManager(params, //callbacks function(){ previewRender(response); }, function(){ previewError(); } ); /*_public methods*/ return{ /*make a request*/ previewRequest: function(request){ myRequestManager.require(request); //err:myRequestManager.require is not a func }, previewRender: function(response){ //do something }, previewError: function(){ //manage error } }; }()); This is the 'class' that make the request to the server function RequestManager(params, success, error){ //create an ajax manager this.param = params; this._success = success; //callbacks this._error = error; } RequestManager.prototype = { require: function(text){ //make an ajax request }, otherFunc: function(){ //do other things } } The problem is that i can't call myRequestManager.require from inside singleton object. Firebug consolle says: "myRequestManager.require is not a function", but i don't understand where the problem is. Is there a better solution for implement this situation?

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  • Would it be simply better to use the system's functions rather than use the language?

    - by Nullw0rm
    There are many scenarios where I've questioned PHP's performance with some of its functions, and whether I should build a complex class to handle specific things using its seemingly slow tools. For example, Complex regular expressions with sed and processing with awk would seemingly be exponential in performance rather than making PHP's regular expression and seemingly excessive functions parse and in time manage to finish it. If I were to do a lot of network tasks such as MX lookups/DIGging/retrieving simultaneously I would rather pass it via system() and let the OS handle it itself. There are simply too many functions in PHP, that are inefficient and result in slow pages or can be handled easier by the OS. What are your opinions? Do you think I should do the hard work with the OS in its own/custom functions?

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  • Changing background images like this

    - by Azzyh
    If you guys check out this webpage: http://www2.scandvision.se/oresund10/ How have they done this background fade in fade out? When i check the source this <img id="wrapper-background" src="images/body-background-0.jpg" alt="Background" /> and i think theres some kind of script maybe php or js, or both, that every 5 sec changes the background: images/body-background-1.jpg images/body-background-2.jpg images/body-background-3.jpg and so on.. So how did they do this? an example would be great, as i want to learn how to do that. If i was going to do something like this i think i would only manage to do a script in php that randomize everytime you refresh. Thank you, this will expand my knowledge

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  • Where is the chink in Google Chrome's armor?

    - by kudlur
    While browsing with Chrome, I noticed that it responds extremely fast (in comparison with IE and Firefox on my laptop) in terms of rendering pages, including JavaScript heavy sites like gmail. This is what googlebook on Chrome has to say tabs are hosted in process rather than thread. compile javascript using V8 engine as opposed to interpreting. Introduce new virtual machine to support javascript heavy apps introduce "hidden class transitions" and apply dynamic optimization to speed up things. Replace inefficient "Conservative garbage colllection" scheme with more precise garbage collection scheme. Introduce their own task scheduler and memory manager to manage the browser environment. All this sounds so familiar, and Microsoft has been doing such things for long time.. Windows os, C++, C# etc compilers, CLR, and so on. So why isn't Microsoft or any other browser vendor taking Chrome's approach? Is there a flaw in Chrome's approach? If not, is the rest of browser vendor community caught unaware with Google's approach?

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  • Can I use meteor for this?

    - by nitelord
    I'm looking for a way to create an app which has a realtime web interface as well as an API which can be called by a node.js client while sharing most of its code. I'd like to be able to manage data, monitor and execute tasks inside of my app via browser, but also have an automation/scheduling program which connects to my web app and tells it to run various tasks and get results of each task. Unfortunately it doesn't look like I can connect to Meteor from the server, so I'm wondering if there's another approach? Is what I described even possible using Meteor? I have done some testing using socket.io and I think I may be able to do it this way, but Meteor seems like it'd be really great for the realtime user interface.

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  • Low memory with 640Kb of live bytes?

    - by Chiodo
    Hello, i've a problem with my application that need to display a lot of images and video. After running ObjectAlloc tool, i see that the live bytes is 640Kb and the overall memory is 31,54Mb when the application crash. In the organizer i get a "low memory" report so i guess the app crashed because low memory but the ObjectAllocation data don't make any sense to me... Any ideas? This is the Organizer crash log: Incident Identifier: CDCAF38C-CFFD-4316-9C4A-5C8E37794B49 CrashReporter Key: 65390aeb97b2b81076576c3e33b025feb5db9202 OS Version: iPhone OS 3.1.3 (7E18) Date: 2010-05-19 10:07:19 +0200 Free pages: 372 Wired pages: 12260 Purgeable pages: 0 Largest process: DTMobileIS Processes Name UUID Count resident pages ATreeTest <1d51c3a5fef8b747c3a1be9405bdd52a 1150 (jettisoned) (active) DTMobileIS <69c3fa96db2f29474d62964aa1a69bfa 3316 notification_pro <8a7725017106a28b545fd13ed58bf98c 68 mediaserverd <3d3800d6acfff050e4d0ed91cbe2467e 464 (jettisoned) syslogd <8eddddc00294d5615afded36ee3f1b62 56 (jettisoned) apsd <32070d91b216d806973c8f1b1d8077a4 173 SpringBoard <324939a437d1cca1fa4af72d9f5d0eba 2475 (jettisoned) (active) accessoryd <8f21c8b376d16e2ccb95ed6d21d8317a 99 (jettisoned) notification_pro <8a7725017106a28b545fd13ed58bf98c 64 ptpd 129 notifyd <591dd4dd804b4b8741f52335ea1fa4ab 64 CommCenter 167 configd <85efd41aceac34ccc0019df76623c7a9 294 fairplayd 91 mDNSResponder 101 lockdownd <80d2bd44c0bcca273d48ce52010f7e65 285 launchd 71 End

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  • How to slow down Uploadify plugin script voor jQuery

    - by Peter
    Now if that isn't a weird question, I don't know what is. But here is the problem: I have a function in my "onSelect" option that has to collect some data (through AJAX) and I have a function in my "onComplete" option that processes the just uploaded files based on the data "onSelect" collected. However, with very small files, the "onSelect" hasn't finished yet before the upload is complete and the "onComplete" fails because it lacks the necessary data. Bigger files work just fine. So, I'm looking for a way to stall the upload of the file. To let it start only after the function in onSelect completed fetching the necessary data. Any ideas? Here is an example of the function that the onSelect triggers: var foo = new Array(); function checkDB( event, queueID , fileObj ) { $.post( ajax_folder + 'fetchData' , { ref: "someValue" } , function( data ){ foo[ queueID ] = data.result; } , 'json' ); return true; }

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  • Can I prevent a user from using windows task manager to end a process?

    - by Russ
    I have a c# 4.0 application that I hear grumblings and rumors about problems with. Now, this application has a global unhandled exception handler that reports back to me with errors. I also know that it works because SOME people fill it in, and submit it. It seems though; that a large number of people do NOT fill it in, but instead, use the Windows Taskmanager to end the process. Is it possible to prevent a user from using the Windows Taskmanager to end a specific process? My goal would be that if the application crashes, the form that the user is presented with prevents the process from being ended. I'll also accept steps that would prevent the Windows Taskmanager from being launched. I know I have seen some processes come up with an "Access Denied" prompt when I try to kill it in TaskManager, however I suspect that the windows team has made this very difficult, if not impossible to achieve.

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  • Uniform distribution of binary values in Matlab

    - by JohnIdol
    I have a requirement for the generation of a given number N of vectors of given size each consistent of a uniform distribution of 0s and 1s. This is what I am doing at the moment, but I noticed that the distribution is strongly peaked at half 1s and half 0s, which is no good for what I am doing: a = randint(1, sizeOfVector, [0 1]); The unifrnd function looks promising for what I need, but I can't manage to understand how to output a binary vector of that size. Is it the case that I can use the unifrnd function (and if so how would be appreciated!) or can is there any other more convenient way to obtain such a set of vectors? Any help appreciated!

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  • Code reviews for larger ASP.NET MVC team using TFS

    - by Parrots
    I'm trying to find a good code review workflow for my team. Most questions similar to this on SO revolve around using shelved changes for the review, however I'm curious about how this works for people with larger teams. We usually have 2-3 people working a story (UI person, Domain/Repository person, sometimes DB person). I've recommended the shelf idea but we're all concerned about how to manage that with multiple people working the same feature. How could you share a shelf between multiple programmers at that point? We worry it would be clunky and we might easily have unintended consequences moving to this workflow. Of course moving to shelfs for each feature avoids having 10 or so checkins per feature (as developers need to share code) making seeing the diffs at code review time painful. Has anyone else been able to successfully deal with this? Are there any tools out there people have found useful aside from shelfs in TFS (preferably open-source)?

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  • Best language to develop medical software

    - by Grace
    I need to write medical program to manage medical practices (patient records, appointments, prescription, etc). Note that this is not for US practices so US EMRs will not work. What is the best platform to develop the software in ie. language and database? Considerations include: - Integration with the web - will need to have Doctors download updates to the software from the web. Will also post reports from the software unto webpages - The software will include a mobile application - probably for Blackberry - Cost is a big factor - need to minimize the license cost to the users - Need tight security on the program

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