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• video streaming infrastructure

  - by alchemical

  We would like to set-up a live video-chat web site and are looking for basic architectural advice and/or a recomendation for a particular framework to use. Here are the basic features of the site: Most streams will be broadcast live from a single person with a web cam, etc., and viewed by typically 1-10 people, although there could be up to 100+ viewers on the high side. Audio and video do not have to be super-high quality, but do need to be "good enough". The main point is to convey the basic info in the video (and audio). If occasionally the frame-rate drops low and then goes back to normal fairly soon, we could live with that. Budget is an issue, so we are in general looking for a lower cost solution that will give us most of what we need in temers of performance and quality. We are looking at Peer1 for co-lo. The rest of our web site will be .Net / Windows platform. We are open to looking at any platform for the best streaming solution, although our technical expertise is currently more on the Windows side.

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• Deployed a Zend App on EC2 and its not working

  - by Gublooo

  Hey Guys, I'm confused about the problem and not sure if I can provide enough details. I have a php app built on Zend framework which I've successfully deployed on other hosting companies. I am now trying to move to Amazon EC2 I moved all my code and set my domain to point to the IP address. So far so good. Now when I access my home page say www.example.com - everything looks good - The home page opens up which means the IndexController is being called and the index method is properly executed which pulls data from the database and displays it in the index.phtml page. So this lets me to believe that everything is working fine. But every link I click on the home page whether its a simple contact us link - or any other action that I directly try to call even through the URL results in 404 Not Found The requested URL /user/add was not found on this server. Apache/2.2.9 (Fedora) Server at www.example.com Port 80 The interesting thing is the home page opens up fine when I call www.example.com but when I give the entire path which is www.example.com/index/index - I get the same above error. I have checked the logs and there are no errors. Has anyone encountered something similar or have any idea if I'm missing a simple step or something like rewrite rule maybe. Its running on LAMP Any ideas Thanks

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• Using Regex, how can I remove certain characters from inside angle-brackets, leaving the characters

  - by Iain Fraser

  Edit: To be clear, please understand that I am not using Regex to parse the html, that's crazy talk! I'm simply wanting to clean up a messy string of html so it will parse Edit #2: I should also point out that the control character I'm using is a special unicode character - it's not something that would ever be used in a proper tag under any normal circumstances Suppose I have a string of html that contains a bunch of control characters and I want to remove the control characters from inside tags only, leaving the characters outside the tags alone. For example Here the control character is the numeral "1". Input The quick 1<strong>orange</strong> lemming <sp11a1n 1class1='jumpe111r'11>jumps over</span> 1the idle 1frog Desired Output The quick 1<strong>orange</strong> lemming <span class='jumper'>jumps over</span> 1the idle 1frog So far I can match tags which contain the control character but I can't remove them in one regex. I guess I could perform another regex on my matches, but I'd really like to know if there's a better way. My regex Bear in mind this one only matches tags which contain the control character. <(([^>])*?`([^>])*?)*?> Thanks very much for your time and consideration. Iain Fraser

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• Python with Wiimote using pywiiuse module

  - by Anon

  After seeing the abilities and hackibility of wiimotes I really want to use it in my 'Intro to programming' final. Everyone must make a python program and present it to the class. I want to make a game with pygame incorporating a wiimote. I found pywiiuse which is a very basic wrapper for the wiiuse library using c types. I can NOT get anything beyond LEDs and vibrating to work. Buttons, IR, motion sensing, nothing. I've tried different versions of wiiuse, pywiiuse, even python. I can't even get the examples that came with it to run. Here's the code I made as a simple test. I copied some of the example C++ code. from pywiiuse import * from time import sleep #Init wiimotes = wiiuse_init() #Find and start the wiimote found = wiiuse_find(wiimotes,1,5) #Make the variable wiimote to the first wiimote init() found wiimote = wiimotes.contents #Set Leds wiiuse_set_leds(wiimote,WIIMOTE_LED_1) #Rumble for 1 second wiiuse_rumble(wiimote,1) sleep(1) wiiuse_rumble(wiimote,0) #Turn motion sensing on(supposedly) wiiuse_motion_sensing(wiimote,1) while 1: #Poll the wiimotes to get the status like pitch or roll if(wiiuse_poll(wiimote,1)): print 'EVENT' And here's the output when I run it. wiiuse version 0.9 wiiuse api version 8 [INFO] Found wiimote [assigned wiimote id 1]. EVENT EVENT Traceback (most recent call last): File "C:\Documents and Settings\Nick\Desktop\wiimotetext.py", line 26, in <mod ule> if(wiiuse_poll(wiimote,1)): WindowsError: exception: access violation reading 0x00000004 It seems each time I run it, it prints out EVENT 2-5 times until the trace back. I have no clue what to do at this point, I've been trying for the past two days to get it working. Thanks!

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• Remove CKEdit Instance

  - by Laramie

  I have an issue creating multiple instances of CKEdit with different toolbars wherein the second instance created is replacing the toolbar of the first. Unfortunately I can only reproduce it in a huge page containing update panels, which I suspect is the issue. That said, the issue at this point is I can't seem to destroy instances of CKEdit per the documentation. Consider the following: <input name="txt1" type="text" id="txt1" /><br /> <a href="javascript:void(0);" onclick="create()">Create</a><br /> <a href="javascript:void(0);" onclick="destroy()">Destroy</a> <script type= "text/javascript" > <!-- function create() { var hEd = CKEDITOR.instances['txt1']; if (hEd) { CKEDITOR.remove(hEd); } hEd = CKEDITOR.replace('txt1'); } function destroy(){ var hEd = CKEDITOR.instances['txt1']; if (hEd) { CKEDITOR.remove(hEd); } } --> </script> When destroy() runs, CKEDITOR.remove(hEd); is being called. Multiple clicks to create() produce multiple instances of CKEditor on screen, but their instances no longer appear in CKEDITOR.instances. Am I missing something?

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• Mysterious socket / HttpWebRequest timeouts

  - by Daniel Mošmondor

  I have a great app for capturing shoutcast streams :-) . So far, it worked with a charm on dozens of machines, and never exhibited behaviour I found now, which is ultimately very strange. I use HttpWebRequest to connect to the shoutcast server and when I connect two streams, everything's OK. When I go for third one, response = (HttpWebResponse)request.GetResponse(); throws with Connection Timeout exception. WTF? I must point out that I had to create .config for the application in order to allow my headers to be sent out from the application, otherwise it wouldn't work at all. Here it is: <?xml version="1.0" encoding="utf-8" ?> <configuration> <system.net> <settings> <httpWebRequest useUnsafeHeaderParsing = "true" /> </settings> </system.net> </configuration> Does any of this ring a bell?

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• Combo-box values automatically update

  - by glinch

  Hi all, hopefully somebody can help The table structure is as follows: tblCompany: compID compName tblOffice: offID, compID, add1, add2, add3 etc... tblEmployee: empID Name, telNo, etc... offID I have a form that contains contact details for employees, all works ok using after update. A cascading combo box, cmbComp, allows me to select a company, and inturn select the appropriate office, cboOff, and updates the corresponding tblEmployee.offID field correctly. Fields are automatically updated for the address also cmbComp: RowSource SELECT DISTINCT tblOffice.compID, tblCompany.compID FROM tblCompany INNER JOIN AdjusterCompanyOffice ON tblCompany.compID=tblOffice.compID ORDER BY tblCompany.compName; cboOff: RowSource SELECT tblCompany.offID, tblCompany.Address1, tblCompany.Address2, tblCompany.Address3, tblCompany.Address4, tblCompany.Address5 FROM tblCompany ORDER BY tblCompany.Address1; The problem I am having is that when i load a new record how to retrieve the data and automatically load the cmbComp and text fields. The cboOff combo box loads correctly as the control source for this is the offID I imagine there must be a way of setting the value on opening the record? Not sure how though. I dont think I can set the controlsource cmbComp or text fields, or can I? Any help/point in the right direction appreciated, have been searching for a way to do this but cant get anywhere!

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• What is the correct date format for a Date column in YUI DataTable ?

  - by giulio

  I have produced a data table. All the columns are sortable. It has a date in one column which I formatted dd/mm/yyyy hh:mm:ss . This is different from the default format as defined in the doco, but I should be able to define my own format for non-american formats. (See below) The DataTable class provides a set of built-in static functions to format certain well-known types of data. In your Column definition, if you set a Column's formatter to YAHOO.widget.DataTable.formatDate, that function will render data of type Date with the default syntax of "MM/DD/YYYY". If you would like to bypass a built-in formatter in favor of your own, you can point a Column's formatter to a custom function that you define. The table is generated from HTML Markup, so the data is held within "" tags. This gives me some more clues about compatible string dates for javascript: In general, the RecordSet expects to hold data in native JavaScript types. For instance, a date is expected to be a JavaScript Date instance, not a string like "4/26/2005" in order to sort properly. Converting data types as data comes into your RecordSet is enabled through the parser property in the fields array of your DataSource's responseSchema I suspect that the I'm missing something in the date format. So what is an acceptable string date for javascript, that Yui dataTable will recognise, given that I want format it as "dd/mm/yyyy hh:mm:ss" ?

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• Producing 64-bit builds on Windows with free software

  - by pauldoo

  Hi, I have a C++ project that I've been developing in Microsoft Visual C++ 2008 Express Edition. It has come to the point that I'd like to port to 64-bit and continue development. What is the best way to do this using free software? My thoughts so far: The Express Edition of MSVC doesn't come with 64-bit compilers, so I can install the Windows SDK to get these. I could then port my project files to nmake, and use the IDE just as a tool to debug and invoke my nmake scripts.. The downside to this is that nmake looks very poor. The example towards the end of this tutorial suggests that nmake cannot figure out source file dependences itself, and I don't know of anything equivelant to gcc -M that I could use. Another option might be to use vcbuild from the Windows SDK to produce 64-bit builds from my existing vcproj files. Preliminary investigations show that this doesn't really work, as my project files don't have the 64-bit configurations present. (Perhaps I could fudge this by adding the 64-bit configurations to the vcproj files in a text editor.) A final option might be to give up on MSVC, and port my project to the MinGW/MSYS toolchain.

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• Design to distribute work when generating task oriented input for legacy dos application?

  - by TheDeeno

  I'm attempting to automate a really old dos application. I've decided the best way to do this is via input redirection. The legacy app (menu driven) has many tasks within tasks with branching logic. In order to easily understand and reuse the input for these tasks, I'd like to break them into bit size pieces. Since I'll need to start a fresh app on each run, repeating a context to consume a bit might be messy. I'd like to create an object model that: allows me to concentrate on the task at hand allows me to reuse common tasks from different start points prevents me from calling a task from the wrong start point To be more explicit, given I have the following task hierarchy: START A A1 A1a A1b A2 A2a B B1 B1a I'd like an object model that lets me generate an input file for task "A1b" buy using building blocks like: START -> do_A, do_A1, do_A1b but prevents me from: START -> do_A1 // because I'm assuming a different call chain from above This will help me write "do_A1b" because I can always assume the same starting context and will simplify writing "do_A1a" because it has THE SAME starting context. What patterns will help me out here? I'm using ruby at the moment so if dynamic language features can help, I'm game.

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• javascript text overlay

  - by Gwilym

  Im pretty unknowledgeable about javascript being desktop application rather a web programmer but I'm trying to add an element to a friends website. Google has failed all my attempts to find a script I can adapt. What I want is a small text box in the bottom right hand corner of the browser window that sits above the html/css, that will disappear if the user scrolls. could provide a small chunk of javascript that could help? or point me to a script which could be adapted. thanks [EDIT] Final Code HTML: <body onscroll="document.getElementById('textbox').style.display = 'none';" > <div id="textbox"> Please Scroll down for more information </div> CSS #textbox { background-color :#FF732F; border: solid 1px #5F6800; padding: 5px; position: absolute; z-index: 9999; right: 0; bottom:0; } [/EDIT]

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• Starting a new business with former colleagues, advice needed

  - by Sparafusile

  I was recently contacted by a former boss of mine who is thinking of starting a new business. The business will be online only it will by my job to design, build, and maintain the software going into it. I will also have to maintain the server it's running on, being the only technical person on the team. I will be one of four members of the business, the other three being the actual business know-hows and salesmen. The other three are shouldering the cost of getting the business going (incorporation, attorney fees, etc) and we will be splitting the cost of the server. I have no business knowledge at all, and don't want any part of it, I am only interested in the technical aspects. Now that we are finalizing our plans, determining roles, and getting ready to start actual work, we have come to the point where we have to determine what percentage stake each of us has. Since I have never done anything like this before, or met anyone that has, I don't know what I should expect. Can anyone give me some pointers on what to ask for in this deal?

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• Converting VS2008 Solution to VS2010 Creates compile errors in ASP.NET 3.5 SP1

  - by Lukasz

  I am converting a large solution from Visual Studio 2008 to Visual Studio 2010. The conversion completes without errors. When I go to build the solution one particular section of the application throws error but it didn't when the solution was 2008. Error 1 Could not load file or assembly 'System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. C:\MyProject\Results\Result.ascx 3 And C:\CMyProject\Results\Result.ascx(3): Build (web): Could not load file or assembly 'System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. The dll is in the bin and it is not in the GAC. The .refresh file is pointing to the correct location. And all sections in the Web.Config are there, if you need to see them let me know. I have gone over the fixes I found online and nothing seems to help. I would really appreciate if someone could help me or point me in the right direction? Thank You.

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• install linux guest on windows host using a .iso file on vmserver 2.0

  - by Bob

  I have done this in vmserver 1.0. I set the Cd to point to the .iso file. Then I start the vm and it starts to install. I am on the summary screen. I have created a VM. I go to CD/DVD - edit I change the radio button to Host Medio Then I select ISO Image and Browse. Here is the problem: Then in my browser I get Inventory - Virtual Machine (directory) I don't know where that directory is. I have my ISO's in a folder on my desktop. I can't browse to my desktop. When I try to just put in a path such as c:\mydesktop\mylinuxdirectory\linux1.iso The following problems have been found:OKThe ISO Image File Path must be a valid file path in the format: "[datastore] /path/to/isoimage.iso". so how do I browse to an ISO? I can add the iso after I start the VM, but by then its too late and the VM says no Operating System installed.

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• How do you remove invalid hexadecimal characters from an XML-based data source prior to constructing

  - by Oppositional

  Is there any easy/general way to clean an XML based data source prior to using it in an XmlReader so that I can gracefully consume XML data that is non-conformant to the hexadecimal character restrictions placed on XML? Note: The solution needs to handle XML data sources that use character encodings other than UTF-8, e.g. by specifying the character encoding at the XML document declaration. Not mangling the character encoding of the source while stripping invalid hexadecimal characters has been a major sticking point. The removal of invalid hexadecimal characters should only remove hexadecimal encoded values, as you can often find href values in data that happens to contains a string that would be a string match for a hexadecimal character. Background: I need to consume an XML-based data source that conforms to a specific format (think Atom or RSS feeds), but want to be able to consume data sources that have been published which contain invalid hexadecimal characters per the XML specification. In .NET if you have a Stream that represents the XML data source, and then attempt to parse it using an XmlReader and/or XPathDocument, an exception is raised due to the inclusion of invalid hexadecimal characters in the XML data. My current attempt to resolve this issue is to parse the Stream as a string and use a regular expression to remove and/or replace the invalid hexadecimal characters, but I am looking for a more performant solution.

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• How do I grant anonymous access to a url using FormsAuthentication?

  - by Brian Bolton

  For the most part, my webapp requires authentication to do anything. There are a few pages, namely the homepage, that I'd like people to be able to access without authenticating. Specifically, I'd like to allow anonymous access to these urls: /home /default.aspx I'm using asp.net MVC and FormsAuthentication. Both urls point to the same view: /home/index.aspx Here is my current configuration in web.config. <authentication mode="Forms"> <forms loginUrl="~/Account/LogOn" timeout="2880" /> </authentication> <authorization> <deny users="?" /> </authorization> Reading the documentation for the authorization tag, it says "Configures the authorization for a Web application, controlling client access to URL resources." It seems like I should be able to use the authorization tag to specify a url and allow access. Something like: <authentication mode="Forms"> <forms loginUrl="~/Account/LogOn" timeout="2880" /> </authentication> <authorization> <deny users="?" /> </authorization> <authorization url="/default.aspx"> <allow users="?" /> </authorization> <authorization url="/home"> <allow users="?" /> </authorization>

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• C# .NET: Descending comparison of a SortedDictionary?

  - by Rosarch

  I'm want a IDictionary<float, foo> that returns the larges values of the key first. private IDictionary<float, foo> layers = new SortedDictionary<float, foo>(new DescendingComparer<float>()); class DescendingComparer<T> : IComparer<T> where T : IComparable<T> { public int Compare(T x, T y) { return -y.CompareTo(x); } } However, this returns values in order of the smallest first. I feel like I'm making a stupid mistake here. Just to see what would happen, I removed the - sign from the comparator: public int Compare(T x, T y) { return y.CompareTo(x); } But I got the same result. This reinforces my intuition that I'm making a stupid error. This is the code that accesses the dictionary: foreach (KeyValuePair<float, foo> kv in sortedLayers) { // ... } UPDATE: This works, but is too slow to call as frequently as I need to call this method: IOrderedEnumerable<KeyValuePair<float, foo>> sortedLayers = layers.OrderByDescending(kv => kv.Key); foreach (KeyValuePair<float, ICollection<IGameObjectController>> kv in sortedLayers) { // ... } UPDATE: I put a break point in the comparator that never gets hit as I add and remove kv pairs from the dictionary. What could this mean?

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• After Navigate2 Method returns S_OK Stuck at READYSTATE of READYSTATE_LOADING

  - by Stone Free

  I am working on a MFC Document View architecture application which has multiple documents and views and a tabbed window interface. I have been tasked with making an automatic switch to another tab on the press of the OK button in one of the other tabs. When the other tab is clicked on it uses a C++ wrapper over IWebBrowser2 to navigate to a specific web page. When this is done manually by clicking on the tab everything is fine and the webpage within the view loads successfully. In my first attempt at doing this the tab successfully switched in response to a call to AfxGetMainWnd()->SendMessageToDescendants(SOME_MESSAGE, ...); however by sending this windows message at the wrong point the application would crash once control returned because the chain of events caused the (modeless) dialog (*) that sent the message, to no longer exist. I then found the correct place to make the call, but now when the other tab is activated, it no longer displays the webpage as it should. To debug this problem I added code to check the READYSTATE in both the situation where it works and the situation where it does not. When the page fails to load (despite the call to Navigate2 returning S_OK), the READYSTATE just stays at READYSTATE_LOADING. Unfortunately now I am to many edits away from when I had it partially working. I have added TRACE statements to the most obvious events such as OnSetFocus, CView::OnActivateView but all traces come out in the same order despite the behaviour being different * hosted in the view

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• Help me find an appropriate ruby/python parser generator

  - by Geo

  The first parser generator I've worked with was Parse::RecDescent, and the guides/tutorials available for it were great, but the most useful feature it has was it's debugging tools, specifically the tracing capabilities ( activated by setting $RD_TRACE to 1 ). I am looking for a parser generator that can help you debug it's rules. The thing is, it has to be written in python or in ruby, and have a verbose mode/trace mode or very helpful debugging techniques. Does anyone know such a parser generator ? EDIT: when I said debugging, I wasn't referring to debugging python or ruby. I was referring to debugging the parser generator, see what it's doing at every step, see every char it's reading, rules it's trying to match. Hope you get the point. BOUNTY EDIT: to win the bounty, please show a parser generator framework, and illustrate some of it's debugging features. I repeat, I'm not interested in pdb, but in parser's debugging framework. Also, please don't mention treetop. I'm not interested in it.

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• FlashBuilder 4 and Zend Framework error

  - by sig

  I am trying to use adobe flash builder 4 with a php service. I had it set up an older macbook running leopard, but just tried to set it up on my new laptop running snow leopard. I did all the same steps.. set the Flex Server to be PHP, set the web root and url. Then I go to Data-Connect To PHP and point it to a php file I have in my web root. It says it needs to install Zend, and claims it does so successfully, but then when I try to continue, I get an error. I don't understand.. this same setup works on my older laptop. (Yes, I checked the amf.production was false) Unable to retrieve operations and entities from the file Make sure that Zend Framework is installed correctly and the parameter "amf.production" is not set to true in the amf_config.ini file located in the project output folder. false), true);$default_config-merge(new Zend_Config_Ini($configfile, 'zendamf'));$default_config-setReadOnly();$amf = $default_config-amf;// Store configuration in the registryZend_Registry::set("amf-config", $amf);// Initialize AMF Server$server = new Zend_Amf_Server();$server-setProduction($amf-production);if(isset($amf-directories)) { $dirs = $amf-directories-toArray(); foreach($dirs as $dir) { // get the first character of the path. // If it does not start with slash then it implies that the path is relative to webroot. Else it will be treated as absolute path $length = strlen($dir); $firstChar = $dir; if($length = 1) $firstChar = $dir[0]; if($firstChar != "/"){ // if the directory is ./ path then we add the webroot only. if($dir == "./"){ $server-addDirectory($webroot); }else{ $tempPath = $webroot . "/" . $dir; $server-addDirectory($tempPath); } }else{ $server-addDirectory($dir); } }}// Initialize introspector for non-productionif(!$amf-production) { $server-setClass('Zend_Amf_Adobe_Introspector', '', array("config" = $default_config, "server" = $server)); $server-setClass('Zend_Amf_Adobe_DbInspector', '', array("config" = $default_config, "server" = $server));}// Handle requestecho $server-handle();

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• Embedding a CMS in an MVC Web App

  - by Mr Snuffle

  I'm working on a website for searching for businesses, then displaying a listing page. We've been toying with the idea of letting the clients manage their listing page using an external CMS. I'm not sure how often this is done, or if it's even best practice. Ideally, we want to be able to setup a listing on our website, then give the clients access to an external CRM when they can manage their listing page. We then want to embed this custom page within our website, possibly using an iframe (which will come along with it's own set of complications). We'd like this integration to be as seamless as possible. I'd personally prefer it if we could directly inject the HTML into our own page and bypass an iframe all together, but I don't know of any CMS hosting services that provide the interface for such a thing. We've experimented a little with Squarespace, and we can get a fairly clean version of someone's page which would be well suited for an iframe. I'm wondering if anyone else has looked and integrating an external hosting CMS into a website (in this case, we're using ASP.NET MVC). We'd also want to automate the creation of accounts on this external CMS, so when a user signed up we could just point them to the website with some login details. I have no idea if anyone offers a service like this, but any recommendations would be greatly appreciated. We could host a service ourself too, but the aim is to have an external system that clients can use to manage their pages. Cheers, James

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• HTML5 Canvas: How to make a loading spinner by rotating the image in degrees?

  - by Bill

  I am making a loading spinner with html5 canvas. I have my graphic on the canvas but when i rotate it the image rotates off the canvas. How do I tell it to spin the graphic on its center point? <!DOCTYPE html> <html> <head> <title>Canvas test</title> <script type="text/javascript"> window.onload = function() { var drawingCanvas = document.getElementById('myDrawing'); // Check the element is in the DOM and the browser supports canvas if(drawingCanvas && drawingCanvas.getContext) { // Initaliase a 2-dimensional drawing context var context = drawingCanvas.getContext('2d'); //Load the image object in JS, then apply to canvas onload var myImage = new Image(); myImage.onload = function() { context.drawImage(myImage, 0, 0, 27, 27); } myImage.src = "img/loading.png"; context.rotate(45); } } </script> </head> <body> <canvas id="myDrawing" width="27" height="27"> </canvas> </body> </html>

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• open source business intelligence solutions

  - by opensas

  which open source business intelligence solution would you recommend? All I need is to build some cubes and let the end user play with dimensions, filter data, sort, etc, and once it's done being able to export it to excel... I'd like the solution to be as simple and easy on resources as possible, and also I'd like it to be as much open source as possible, by the way. I've heard that many solutions available do have many restrictions when it comes to there community version. I'd like to ear your advices and the pros/cons of each alternative, to help me choose the right tool, and if you could point me to some basic demo and tutorial to get started. thanks a lot ps: I'm using sql server databases, they aren't huge databases (in general less than a million records) and I doesn't necessarily have to work on "live" data... ps: some useful links: http://en.wikipedia.org/wiki/Business_intelligence_tools#Open_source_free_products http://www.manageability.org/blog/stuff/open-source-java-business-intelligence http://www.jaspersoft.com/jasperanalysis http://community.pentaho.com/projects/bi_platform/ http://community.pentaho.com/faq/platform_licensing.php http://www.eclipse.org/birt/phoenix/ http://www.spagoworld.org/xwiki/bin/view/SpagoWorld/ http://docs.google.com/viewer?a=v&q=cache:vhsqMQXwCUkJ:www.ow2.org/xwiki/bin/download/Activities/EuropeLocalChapterWebinars/ELCWebinarOSBI.pdf+open+source+business+intelligence&hl=en&pid=bl&srcid=ADGEESgpJJ2MqaKprJQOF2jX2UXCZQjg_asv8d7EVYtq0Vma-e-tR1tFxS-I0SOW0IhJC5acYc94rkDOrgP1WckCp_vk4qhKqR9y2Klp_u9cL8hlXoKoUpMkpAd5wabu61A4W0y15E5P&sig=AHIEtbRJ5FAI-3YK-qtayPjKkF_CwOgZag

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• Get current timepoint from Totem application

  - by ??O?????

  I want to find the exact time where a media file is currently paused at (or playing) in a running Totem instance using D-Bus. To be precise, what I want is available from the Totem python console (if the plugin exists and is enabled) by the following command: >>> print totem_object.props.current_time 732616 which I understand is milliseconds. So far: I've never used D-Bus before, so I'm in the process of going through D-Bus and python-dbus documentation. I've also fired up D-Feet and found that the org.gnome.Totem bus name and the /Factory object I can use the org.freedesktop.DBus.Properties interface methods. I'm currently at this point: >>> import dbus >>> seb= dbus.SessionBus() >>> t= seb.get_object('org.gnome.Totem', '/Factory') >>> tif= dbus.Interface(t, 'org.freedesktop.DBus.Properties') >>> tif.GetAll('') dbus.Dictionary({}, signature=dbus.Signature('sv')) I can't find even a proper how-to, so any help will be greatly appreciated.

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• Best approach to storing image pixels in bottom-up order in Java

  - by finnw

  I have an array of bytes representing an image in Windows BMP format and I would like my library to present it to the Java application as a BufferedImage, without copying the pixel data. The main problem is that all implementations of Raster in the JDK store image pixels in top-down, left-to-right order whereas BMP pixel data is stored bottom-up, left-to-right. If this is not compensated for, the resulting image will be flipped vertically. The most obvious "solution" is to set the SampleModel's scanlineStride property to a negative value and change the band offsets (or the DataBuffer's array offset) to point to the top-left pixel, i.e. the first pixel of the last line in the array. Unfortunately this does not work because all of the SampleModel constructors throw an exception if given a negative scanlineStride argument. I am currently working around it by forcing the scanlineStride field to a negative value using reflection, but I would like to do it in a cleaner and more portable way if possible. e.g. is there another way to fool the Raster or SampleModel into arranging the pixels in bottom-up order but without breaking encapsulation? Or is there a library somewhere that will wrap the Raster and SampleModel, presenting the pixel rows in reverse order? I would prefer to avoid the following approaches: Copying the whole image (for performance reasons. The code must process hundreds of large (= 1Mpixels) images per second and although the whole image must be available to the application, it will normally access only a tiny (but hard-to-predict) portion of the image.) Modifying the DataBuffer to perform coordinate transformation (this actually works but is another "dirty" solution because the buffer should not need to know about the scanline/pixel layout.) Re-implementing the Raster and/or SampleModel interfaces from scratch (but I have a hunch that I will be unable to avoid this.)

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