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• Home Server: cpu virtualisation, what to choose?

  - by Huygens

  I'm looking for virtualisation solutions for storage and OS for a home server. A sort of private cloud where I manage the storage space independently of the VM one. This question focus on VM (or compute instance) management and what would best suit my needs. (I have another question related to the storage management). My use cases are: A backup server: rsync and other services running. A personal cloud server: a kind of owned dropbox system, à la ownCloud. " users foreseen. A media server: streaming videos and displaying photos. Here my environement and wishes: Server: HP Proliant MicroServer with 8 GB RAM (AMD Turion dual core with AMD-V technology) OS types: only Linux (perhaps a *BSD VM in the future) Linux distributions do not matter, I'm familiar with RHEL, Fedora, Suse, Ubuntu, but any other recommandation will be fine 2-3 VMs foreseen: backup server, owncloud server and media server (optional). Those are only servers, so no graphical console needed (I don't need VirtualBox) By VM I mean a virtualised environment like KVM, Xen, etc. or a compute instance like with OpenStack storage should be "virtualised/cloudified" see my other question. VM should be able to be migrated to another server in the future if performance cannot be fullfilled anymore by the current server It does not matter if installation of such setup is complicated as long as management tools allow for easy maintenance I don't have Windows at home, so solution should be Linux friendly and would be nice to be web based. But native apps are OK too. System should be easy to enhance: by adding a new server to migate some of the VMs to it. So it's really a kind of private cloud on which I could run some Linux OS. I would prefer free (libre, as in a free speach) and open source tools. But it does not have to be free as in a free beer. So Xen, KVM, VitualBox or OpenStack? What would you recommend?

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• How can I allow the Xbox 360 to browse movies on a network drive?

  - by Roger

  I've always been able to stream movies stored on my Windows 7 computer's local hard drive to the Xbox 360 with no problems. A few weeks ago, though, I got a Seagate Dockstar NAS device and moved my movies to it. Ever since then, I can't seem them in the Xbox. I've tried several different things. When I try to add the mapped drive to the Media Player library, it says that it can't share the files. (I don't have any security on the NAS drive). I've tried creating a symlink to a local drive, but that doesn't help. Neither does adding the UNC path directly. The Dockstar seems to have its own Xbox share capability, but it doesn't respect my folder structure - it brings over every video file on the drive in a single list, including several hundred home videos that aren't playable on the Xbox. Is there any way to use Media Player (or the Zune software) to share files stored on a NAS drive? Barring this, is there a lightweight, free server that will allow me to share these files while maintaining my folder structure?

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• Loading XML file containing leading zeros with SSIS preserving the zeros

  - by Compudicted

  Visiting the MSDN SQL Server Integration Services Forum oftentimes I could see that people would pop up asking this question: “why I am not able to load an element from an XML file that contains zeros so the leading/trailing zeros would remain intact?”. I started to suspect that such a trivial and often-required operation perhaps is being misunderstood by the developer community. I would also like to add that the whole state of affairs surrounding the XML today is probably also going to be increasingly affected by a motion of people who dislike XML in general and many aspects of it as XSD and XSLT invoke a negative reaction at best. Nevertheless, XML is in wide use today and its importance as a bridge between diverse systems is ever increasing. Therefore, I deiced to write up an example of loading an arbitrary XML file that contains leading zeros in one of its elements using SSIS so the leading zeros would be preserved keeping in mind the goal on simplicity into a table in SQL Server database. To start off bring up your BIDS (running as admin) and add a new Data Flow Task (DFT). This DFT will serve as container to adding our XML processing elements (besides, the XML Source is not available anywhere else other than from within the DFT). Double-click your DFT and drag and drop the XMS Source component from the Tool Box’s Data Flow Sources. Now, let the fun begin! Being inspired by the upcoming Christmas I created a simple XML file with one set of data that contains an imaginary SSN number of Rudolph containing several leading zeros like 0000003. This file can be viewed here. To configure the XML Source of course it is quite intuitive to point it to our XML file, next what the XML source needs is either an embedded schema (XSD) or it can generate one for us. In lack of the one I opted to auto-generate it for me and I ended up with an XSD that looked like: <?xml version="1.0"?> <xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:element name="XMasEvent"> <xs:complexType> <xs:sequence> <xs:element minOccurs="0" name="CaseInfo"> <xs:complexType> <xs:sequence> <xs:element minOccurs="0" name="ID" type="xs:unsignedByte" /> <xs:element minOccurs="0" name="CreatedDate" type="xs:unsignedInt" /> <xs:element minOccurs="0" name="LastName" type="xs:string" /> <xs:element minOccurs="0" name="FirstName" type="xs:string" /> <xs:element minOccurs="0" name="SSN" type="xs:unsignedByte" /> <!-- Becomes string -- > <xs:element minOccurs="0" name="DOB" type="xs:unsignedInt" /> <xs:element minOccurs="0" name="Event" type="xs:string" /> <xs:element minOccurs="0" name="ClosedDate" /> </xs:sequence> </xs:complexType> </xs:element> </xs:sequence> </xs:complexType> </xs:element> </xs:schema> As an aside on the XML file: if your XML file does not contain the outer node (<XMasEvent>) then you may end up in a situation where you see just one field in the output. Now please note that the SSN element’s data type was chosen to be of unsignedByte (and this is for a reason). The reason is stemming from the fact all our figures in the element are digits, this is good, but this is not exactly what we need, because if we will attempt to load the data with this XSD then we are going to either get errors on the destination or most typically lose the leading zeros. So the next intuitive choice is to change the data type to string. Besides, if a SSIS package was already created based on this XSD and the data type change was done thereafter, one should re-set the metadata by right-clicking the XML Source and choosing “Advanced Editor” in which there is a refresh button at the bottom left which will do the trick. So far so good, we are ready to load our XML file, well actually yes, and no, in my experience typically some data conversion may be required. So depending on your data destination you may need to tweak the data types targeted. Let’s add a Data Conversion Task to our DFT. Your package should look like: To make the story short I only will cover the SSN field, so in my data source the target SQL Table has it as nchar(10) and we chose string in our XSD (yes, this is a big difference), under such circumstances the SSIS will complain. So will go and manipulate on the data type of SSN by making it Unicode String (DT_WSTR), World String per se. The conversion should look like: The peek at the Metadata: We are almost there, now all we need is to configure the destination. For simplicity I chose SQL Server Destination. The mapping is a breeze, F5 and I am able to insert my data into SQL Server now! Checking the zeros – they are all intact!

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• convert decrypted .vobs to .avi with ffmpeg on ubuntu

  - by Arcath

  I have a .vob file that has bee ripped from a dvd, when I watch the .vob its very good quality video and 5.1 english audio but when I use ffmpeg it has rubbish video and mono french audio. That was using this command: ffmpeg -i /samba/ripping/vobs/12161840#2.vob -f avi /samba/ripping/avis/test.avi I've tried a few different variations on that but it never comes back with anything good just bigger files with bad video and incorrect sound. I know the videos good and the correct audio streams exist so how do I select a 5.1 track and get good video? ffmpeg gives the .vob details as: Input #0, mpeg, from '/samba/ripping/vobs/12161840#2.vob': Duration: 00:42:05.56, start: 0.287267, bitrate: 5738 kb/s Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576 [PAR 64:45 DAR 16:9], 8436 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0.1[0x80]: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s Stream #0.2[0x81]: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s Stream #0.3[0x82]: Audio: ac3, 48000 Hz, mono, s16, 192 kb/s Output #0, avi, to '/samba/ripping/avis/test.avi': Metadata: ISFT : Lavf52.64.2 Stream #0.0: Video: mpeg4, yuv420p, 720x576 [PAR 64:45 DAR 16:9], q=2-31, 200 kb/s, 25 tbn, 25 tbc Stream #0.1: Audio: mp2, 48000 Hz, mono, s16, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.3 -> #0.1

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• come on!teach u save photos from iphone to computer

  - by goodm

  i am using iphone ,when we have fun,we took a lot of nice pics ,but,that is a question,how to transfer photos from iphone to computer,now ,let me show you,step by step: Step 1: Download Tansee iPhone Transfer Photo free trial version here,and then install it. You also need iTunes above 7.3 installed.or download at: http://www.softseeking.com/prodail.aspx?proid=74 Step 2: Connect iPhone to your computer. Step 3: Launch Tansee iPhone Transfer Photo and all the photos in your iPhone will display automatically, Step 4: Select the photos to be transferred to your computer, the selected file will marked with red border. You can select photos by click on each one, or just drag a rectangle to select a bundle of photos. You can also select all photos by click right button of your mouse or click "File" to choose. Note: you can only select first 6 photos if you haven't purchase. Step 5: Click "Copy" button to select output path and start to transfer photos to your computer: iPhone Camera Photo & Camera Video: Click "Camera Roll", do as steps above can copy your iPhone Camera Photos and iPhone Camera Videos to PC. Options Setting 1.Backup File Format: To select backup photo file format, Tansee iPhone Transfer Photo support BMP and JPG file now. 2.Backup Path: To select directory for storing the backup photos. You can select backup directory for each photo during backup by check "Ask Every Time" or store all files in a specified directory by checking "Save Here" and select the directory in the edit box. 3.Backup Resolution: To select the photo size to be backup.

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• Concatenating ogg video files from the command line

  - by Noufal Ibrahim

  Okay. I've got a few ogg files I've created using a desktop recording tool. I've transcoded them using ffmpeg once (mainly to clip out the beginnings and the ends). Now, I have 3 such files which I want to concatenate into a single .ogv file. I tried using oggCat, it crashed with some kind of error (I tried concatenating a file to itself using oggCat and that failed too leading me to believe that my distro is shipping a broken version of the package). Simply cating the files works but I can't seek which is not cool. mencoder run like this mencoder -ovc lavc -oac lavc file1.ogv file2.ogv file3.ogv -o complete.ogv. It transcodes the files into an avi and clips off a little of the 3 videos. So, how do I do this? Update 1: My current workaround is to transcode the 3 files into .mpg using ffmpeg, then cating them together and then transcoding them back into ogv. Update 2: PiTiVi works for this kind of thing but I need something from the command line that I can automate and script.

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• Connection problems via Wifi (multiple devices)

  - by Kelvin Farrell

  I'm having connection issues with my router (Linksys WRT610N) at home. There are a number of things that are happening (may be more, this is just what I've mainly noticed)... 1) Using my laptop (Macbook Pro OSX Lion), I am unable to complete any operations with my external FTP server, hosted with FatCow. I can connect to it, navigate through all the files, but when I try to edit/delete/add a file the operation times out. EVERY time. I've used two other Wifi connection on my laptop and neither have this issue. 2) I am unable to upload photos/videos to Facebook or Twitter using my phone (Samsung Galaxy S2) or my tablet (HP Touchpad - CM9). Neither am I able to upload files to Dropbox via either of the devices. Same thing happens in all situations; the upload will begin and it will just hang on 0% forever. After about 10 mins I am always forced to disconnect the Wifi to stop the action. 3) My laptop is having slow internet speed, even though we are on 20mb broadband. Speedtests say I'm getting a good connection and my Ping is good, but when using streaming services like Spotify, it takes forever to load a page and frequently stops to buffer whilst playing a song. Don't know if it's worth mentioning but I have no issues with my XBox (Ethernet), AppleTV (Wifi) or my girlfrield's phone (Nokia Lumia 800 - WP7.5) on the network. I'd really appreciate any help. This is driving me insane and is really affecting both my working and leisure use of the internet.

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• Edubuntu video playback and apt-get

  - by asdasd

  They had installed some modified edubuntu's at school... So i have some questions about setting some things up: How we can play HD videos ? They are made for windows machines and are in .wmv format but we need to play them on our multimedia class but don't know how - which player, which codecs etc. How to edit properly the /etc/apt/sources file ? Anything we try to install via apt-get it just says that E:\ is not available. Please tell me which repositories to put in there so we could be able to install some tools. Where are usually viruses/trojans put in ubuntu ? I mean in which directories ? Because our computers are behaving really slow and we need to check for some malware manually - we are not even allowed to install any kind of AV software. So tell me the usual directories and places for hiding such files, how are they hiddem, how to recognize them etc. Any others nice tricks/tips that we need to know. Thank you very much in advance.

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• PS3 controller -> PC -> emulators -> TV

  - by abrereton

  I'm researching a media PC for the living room. Playing videos, audio and streaming Internet is straightforward enough. I would also like to run a gaming console system. I was wondering if anyone has any thoughts on this. So far I've discovered that a PS3 controller (thankfully it uses USB and Bluetooth) can be connected to a PC. I've also found that MAME, MESS and PCSX2 are all the emulators I need (I can even emulate a TI-83 calculator with MESS). These emulators can re-map keys, so for example I can make the Nintendo's A button to the PS3 X button, or the SNES key pad could be the PS3 keypad or the analog stick. There are also front-ends to these emulators which can do fancy things like image scaling, anti-aliasing and double-buffering to improve the image quality of an 8-bit Mario on a 50 inch plasma. My set up would be this: PS3 controller connecting over Bluetooth to the PC, PC with Windows, PS3 controller drivers, all my emulators, Network drive with all my ROMs, PC connected to TV via HDMI TV playing Super Mario Kart Does this sound feasible? Does anyone have experience of doing anything like this? Is this a good idea or should I grow up and stop living in the past?

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• Keeping Xv Overlay configuration throughout an X session.

  - by kriss

  After upgrading my Linux system from Ubuntu 9.04 to Ubuntu 10.10, I suceeded correcting most problems (all related to Intel 82865G Integrated Graphics Adapter support and compiz is still not working but that's another matter) but for one I only have a partial solution. Whenever I play a video the colors are much too saturated. This is really a problem for tones of skins that appears reddish (everyone seems to be coming back from a ski vacation with deep sun burns). As this effect only occurs with videos, not with pictures, I finally figured out it was related to Video Overlays configuration and I can correct it typing: xvattr -a XV_SATURATION -v 120 This change the default saturation value, which is 500 and much too high in my case, at eye sight the correct value seems to be between 100 and 150. Now my problem is that I have to type the above command each time I run a video. If I type it before running the video it has no effect, if I close the video and open a new one, I have to type it again, etc. I tried to put it in Xsession and (logically) it has no effect either. How could I do to get the correct setting whenever I run a video without typing the above command every time ?

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• Monitor is flashing through camera but not in the naked eye

  - by odyodyodys

  Two monitors: Samsung T23C350 - Samsung 2243NW Lets call the first A and the other B. A is a LED monitor with a 2ms response time (in specs) with a native resolution of 1920*1080@60Hz B is an older not-led one with 5ms response in specs with a resolution of 1680*1050@60Hz In the attached images and video you'll see that A (on the LEFT) is flickering but this is not visible to the naked eye. I took some pictures and videos with a camera and a mobile phone. This is also happening to all digital camcorders I've tested. A has a setting response time with values normal, fast, fastest. No matter the setting, the effect is the same. A on the left and B on the right. You can see the flickering, although both are @60Hz A video where you can see both monitors. A is always the left monitor. Another video where you can see what my digital camera sees. Another thing is that I managed to get a picture where the left monitor is completely black whilst the right one is displaying fine. This proves that the monitor is continuously flashing. My question is: Is this normal behavior and what is causing it? Am I affected by this fast flickering? I am using this as my primary monitor and as a programmer I have to keep my eyes on it for hours.

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• How to play 24 fps video smoothly on a 60Hz display?

  - by netvope

  I use mpc-hc to play videos on Win7 x64. With the default settings (#1), video playback is great most of the time. But for panning shots, playback is not smooth. I stepped through the video frame by frame and found that the panning movement is smooth (e.g. each frame shifts horizontally by 10 pixels), so the problem is how the 23.976 fps video is interpolated to 60Hz. The judder looks like what would be caused by a "2:3 pulldown", where the frames are played unevenly like: frame 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, etc (#2) Using "optimal renderer settings" (#3) instead of the default disables the Aero theme and causes tearing. Setting my LCD display to 50Hz may have improved the judder slightly (but I can't really tell). My display does not support 24Hz or 48Hz, and forcing them in the Nvidia control panel gives blurry screen. I've tried other video players (VLC and KMPlayer), the ReClock Directshow Filter, video files from different sources (#4), turning on/off DXVA, and a computer with a different GPU, but the judder in the playback is similar. None of them solved the problem. So, how can I play 23.976 or 24 fps video smoothly on a 60Hz display? I think a video player could make the video smoother by doing linear interpolation, such as: 1. 100% frame 1 2. 60% frame 1 + 40% frame 2 3. 20% frame 1 + 80% frame 2 4. 80% frame 2 + 20% frame 3 5. 40% frame 2 + 60% frame 3 6. 100% frame 3 7. 60% frame 3 + 40% frame 4 .. etc Can any existing video player do this? Footnotes: (#1) Video renderer: EVR Custom Pres. (#2) This example converts a 24 fps video into 30 fps (#3) View Renderer settings Reset Reset to optimal renderer settings (#4) The files I have are all H.264 mkv files, but I don't think the file format/encoding matters.

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• Avoid "privacy pitfalls" in Windows and Linux?

  - by Somebody still uses you MS-DOS

  I have a Windows and a Linux machine. In Windows, everytime I visit a site, a lot of cache/history files are created on my machine. I setup my Firefox to don't save anything. ...but Windows saves a lot of "temp" files, some strange files I opened in registry (like video names). Each video I open in VLC is shown in "Last shown videos". In windows, all files opened can be found at "Recent opened files" as well. A lot of these privacy configurations can be tweaked (VLC and "Recent opened files" in Windows) - it's a PITA doing it individually, but it's possible - but there isn't a guide to these "internal" privacy traces that are left on Windows installation. In Linux, I just know there are these problems in app level (like VLC). My question is: is there a complete guide to avoid undesirable traces of what I did/watch/used in my Windows machine? (Delete everytime the PC is restarted, or even avoiding recording these info at all) Is there a website with configuration guides to different types of software? I would like to know about Linux privacy pitfalls as well.

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• Is there a good alternative to Videora iPod Converter?

  - by Richard

  I use Videora to convert my videos (in DivX/XviD format) to something I can play on my iPod Classic. I really dislike it. It's clunky, riddled with adverts, sometimes doesn't convert properly (the infamous "invalid public atom" error - see Google for more) and has a UI that truly stinks. On the upside, it's free, accepts a list of video files (via the oddly hard to find "1-click convert" button) and just gets on with the converting as it already knows the correct settings for my iPod. One final nice touch is that once they are converted, it'll automatically upload them into iTunes. Are there any alternatives which have all the upsides but none of the downsides? Bonus points if they can set the metadata in iTunes correctly for TV shows (season, show, episode) and delete the converted file afterwards (as my iTunes settings means that a copy is made elsewhere). I've looked at a bunch of applications (handbrake, virtualdub, mediacoder, format factory, any video converter, convertxtodvd) but many of them fail the "just select a list of files and get on with converting" test - let alone all the other features I want. I have no desire to individually set the video size of each file or the codec or the post-processing options. I'm currently using the command line version of HandBrake (handbrakecli) and a hand-written DOS batch file to go through every file in a folder and convert it. It does most of what I want, just not in a very slick way. Can anyone recommend anything better? It needs to work on Windows 7 and be free.

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• Share Firefox/Thnderbird data between W7 and Linux Mint 12 in dual boot computer

  - by Albert

  I've just set up my laptop (where I had running only W7) with a dual boot to run Linux Mint 12 as well. I have a "Data" partition (apart from the required partitions for W7 and Linux) where I store pretty much everything that isn't software installations (music, videos, project files, etc). I seem to be able to access that NTFS partition totally fine from Mint (like I've always done with W7), which is cool because I can access all that stuff regardless of which OS I'm using. I would like to know if it's possible (and how) to go one step further and share programs data between the two OS. One example would be my Firefox and Thunderbird data. For example, in Firefox share my bookmarks (and if I could share history, autocomplete and all that stuff, that would be awesome). In thunderbird, be able to share my mail and configuration, seeing the same inbox, folders, message rules, etc... So if I receive/send an email from W7 and later switch to Mint, I can see that email as it had been received/sent from Mint, and vice versa. Is this even possible? Or am I asking for too much convenience? If it's possible, any clues on how to set it all up?

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• Autologin 2 Windows users OR Login another user from the desktop

  - by fpdragon

  I'm using two windows users on my HTPC at the same time. One is just for watching videos and one for administration via remote. This setup is quite ideal for me since windows can handle multiple concurrent logins and the win "rdp concurrent hack" (Google). The problem is, I want both users to be logged in automatically when the pc was started. It shall be possible to watch tv and also the admin user shall be automatically logged in to start my scripts and other tasks, even if I haven't logged in via remote desktop manually. Later, when I want to admin my htpc I can just rdp connect the admin user without interrupting the video playback on the actual HTPC's screen and check my cleanup tasks, downloads, ... witch already executed for this admin user. But right now I found no solution to automatically login user A from a user B desktop and I also found no solution to autologin both users immediately at startup. As a workaround I have to fire up my other notebook machine and login one time with the remote user via rdp. From this time on the remote admin user is running concurrent with the main user in the background of the machine. The other workaround would be... after startup switch user from main user to admin user and then back again. But that also requires manual steps. I'm on a Windows 8 System right now but all infos for Win7 or XP would be also interesting. thanks a lot for all ideas. PS: just to prevent useless posts... don't tell me that only one user can be logged in to windows. ;)

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• Android Bitmap : collision Detecting [on hold]

  - by user2505374

  I am writing an Android game right now and I would need some help in the collision of the wall on screen. When I drag the ball in the top and right it able to collide in wall but when I drag it faster it was able to overlap in the wall. public boolean onTouchEvent(MotionEvent event) { int x = (int) event.getX(); int y = (int) event.getY(); switch (event.getAction()) { // if the player moves case MotionEvent.ACTION_MOVE: { if (playerTouchRect.contains(x, y)) { boolean left = false; boolean right = false; boolean up = false; boolean down = false; boolean canMove = false; boolean foundFinish = false; if (x != pLastXPos) { if (x < pLastXPos) { left = true; } else { right = true; } pLastXPos = x; } if (y != pLastYPos) { if (y < pLastYPos) { up = true; } else { down = true; } pLastYPos = y; } plCellRect = getRectFromPos(x, y); newplRect.set(playerRect); newplRect.left = x - (int) (playerRect.width() / 2); newplRect.right = x + (int) (playerRect.width() / 2); newplRect.top = y - (int) (playerRect.height() / 2); newplRect.bottom = y + (int) (playerRect.height() / 2); int currentRow = 0; int currentCol = 0; currentRow = getRowFromYPos(newplRect.top); currentCol = getColFromXPos(newplRect.right); if(!canMove){ canMove = mapManager.getCurrentTile().pMaze[currentRow][currentCol] == Cell.wall; canMove =true; } finishTest = mapManager.getCurrentTile().pMaze[currentRow][currentCol]; foundA = finishTest == Cell.valueOf(letterNotGet + ""); canMove = mapManager.getCurrentTile().pMaze[currentRow][currentCol] != Cell.wall; canMove = (finishTest == Cell.floor || finishTest == Cell.pl) && canMove; if (canMove) { invalidate(); setTitle(); } if (foundA) { mapManager.getCurrentTile().pMaze[currentRow][currentCol] = Cell.floor; // finishTest letterGotten.add(letterNotGet); playCurrentLetter(); /*sounds.play(sExplosion, 1.0f, 1.0f, 0, 0, 1.5f);*/ foundS = letterNotGet == 's'; letterNotGet++; }if(foundS){ AlertDialog.Builder builder = new AlertDialog.Builder(mainActivity); builder.setTitle(mainActivity.getText(R.string.finished_title)); LayoutInflater inflater = mainActivity.getLayoutInflater(); View view = inflater.inflate(R.layout.finish, null); builder.setView(view); View closeButton =view.findViewById(R.id.closeGame); closeButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View clicked) { if(clicked.getId() == R.id.closeGame) { mainActivity.finish(); } } }); AlertDialog finishDialog = builder.create(); finishDialog.show(); } else { Log.d(TAG, "INFO: updated player position"); playerRect.set(newplRect); setTouchZone(); updatePlayerCell(); } } // end of (CASE) if playerTouch break; } // end of (SWITCH) Case motion }//end of Switch return true; }//end of TouchEvent private void finish() { // TODO Auto-generated method stub } public int getColFromXPos(int xPos) { val = xPos / (pvWidth / mapManager.getCurrentTile().pCols); if (val == mapManager.getCurrentTile().pCols) { val = mapManager.getCurrentTile().pCols - 1; } return val; } /** * Given a y pixel position, return the row of the cell it is in This is * used when determining the type of adjacent Cells. * * @param yPos * y position in pixels * @return The cell this position is in */ public int getRowFromYPos(int yPos) { val = yPos / (pvHeight / mapManager.getCurrentTile().pRows); if (val == mapManager.getCurrentTile().pRows) { val = mapManager.getCurrentTile().pRows - 1; } return val; } /** * When preserving the position we need to know which cell the player is in, * so calculate it from the centre on its Rect */ public void updatePlayerCell() { plCell.x = (playerRect.left + (playerRect.width() / 2)) / (pvWidth / mapManager.getCurrentTile().pCols); plCell.y = (playerRect.top + (playerRect.height() / 2)) / (pvHeight / mapManager.getCurrentTile().pRows); if (mapManager.getCurrentTile().pMaze[plCell.y][plCell.x] == Cell.floor) { for (int row = 0; row < mapManager.getCurrentTile().pRows; row++) { for (int col = 0; col < mapManager.getCurrentTile().pCols; col++) { if (mapManager.getCurrentTile().pMaze[row][col] == Cell.pl) { mapManager.getCurrentTile().pMaze[row][col] = Cell.floor; break; } } } mapManager.getCurrentTile().pMaze[plCell.y][plCell.x] = Cell.pl; } } public Rect getRectFromPos(int x, int y) { calcCell.left = ((x / cellWidth) + 0) * cellWidth; calcCell.right = calcCell.left + cellWidth; calcCell.top = ((y / cellHeight) + 0) * cellHeight; calcCell.bottom = calcCell.top + cellHeight; Log.d(TAG, "Rect: " + calcCell + " Player: " + playerRect); return calcCell; } public void setPlayerRect(Rect newplRect) { playerRect.set(newplRect); } private void setTouchZone() { playerTouchRect.set( playerRect.left - playerRect.width() / TOUCH_ZONE, playerRect.top - playerRect.height() / TOUCH_ZONE, playerRect.right + playerRect.width() / TOUCH_ZONE, playerRect.bottom + playerRect.height() / TOUCH_ZONE); } public Rect getPlayerRect() { return playerRect; } public Point getPlayerCell() { return plCell; } public void setPlayerCell(Point cell) { plCell = cell; }

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• adding a custom user folder on Ubuntu

  - by Narcolapser

  Question: How do you add a custom folder to the collection of user folders that come with Ubuntu? Info: I just loaded my netbook with Ubuntu Desktop 10.04LTS (Desktop because it is an aspire one and the Apocalypse seems to follow when ever i try to install netbook remix onto it). It comes with standard folders like Documents, Music, Pictures, Downloads(though this one doesn't appear until you actually download something), Videos, etc etc. These are handly little folders because they have little symbols on them and are nicely located in my file browser. it is basically like the folder lay out the windows had in vista. I do a lot of little programing on this computer so i have a folder in which i keep all these single kb code files. Obviously named "Code" that I keep in my home folder. But I would really like to it over listed next to my other user folders. In summary, how do you add a folder to the listing on the file browser. And, if possible, how do you give it an icon? (I understand fully that I will probably have to make said Icon) those two things are what I'm seeking to do. ~n P.s. please correct me if I'm using the wrong name. I just guessed and called them "User Folders" because they were folders the user uses. made sense. but if they have another name like "libraries" please say so. Thanks

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• h264 inside FLV container vs. MP4 container?

  - by Gotys

  I am developing a tube site, and currently having issues with h264 format . By looking at youtube, I noticed they are putting their hi-def videos into mp4 container, so logically I did the same. Next, I installed mod_h264_streaming for lighttpd to make streaming and timeline-scrubbing work. Problem is, that large files (500mb+ at somewhat high resolution) take for EVER to even start buffering ( I read the flowplayer or other flash players need to download metadata first) . I moved the xmov atom to the front of the file with MP4Box (i tried qt-quickstart too) , and the problem didn't go away. Next I read online I need to interleave audio tracks, so I did that too. No change in slowness. So I tried putting the same exact h264 movie into an FLV container, and the playback buffering starts almost instantly - no slowness. So what am I missing here? Why would I choose MP4 container with mod_264_streaming module , which seems super-slow over a regular FLV container with lighttpd's built-in mod_flv_streaming ? Obviously many websites pick mp4 container , but I fail to understand why ? And as a side question - I tried using HTML5's VIDEO tag to try the same h264 MP4 movie, and the scrubbing is LIGHTING FAST! I looked into lighttpd's log file, and i noticed taht Flash Players append video.mp4?start=234 each time timeline is scrubbed, wheres HTML5's video tag does no such thing . Is this some sort of limitations of Flash ? Why Can't flash streaming be same fast as HTML5 streaming? Thanks to ALL who can help. I very much appreciate this community.

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• Is Cherokee (probably) the best static content server for beginner sysadmins?

  - by Bad Learner

  I have read the pros and cons of most of the popular web servers and have come to a conclusion that Apache would (probably) be the best web server for serving dynamic content - - no wonder YouTube, Flickr and Facbook, among many others, use it. I do not know if that C10K problem applies to Apache even when serving dynamic content only, but I think any web server used to serve dynamic content needs some good tweaking for optimized performance, and the fact that nothing beats Apache when it comes to documentation, resources and support on the web, I think should will go with Apache for dynamic content. That apart, the confusion begins when it comes to choosing web servers for static content (including streaming videos). I see that Nginx, Cherokee and Lighttpd are among the best (I am not considering non-open source or non-linux stuff here). So, which too choose? I know one cannot go wrong with any of the three (Nginx, Cherokee, Lighttpd). Lighttpd's development has evidently gotten slower than it was a good time ago. The documentation is pretty good for all the three, and hopefully, so are the resources (knowledge of these among the users of Stackoverflow/Serverfault sites, the web etc). Precisely, and noting point [2] and [3], if I am not wrong, I should either go with Nginx or Cherokee. I would love to see someone clarify these... is Cherokee just as fast (mb/s), performant (connections/s), and reliable (think downtime/restarting server) as Nginx for serving static content and load balancing, for small, medium to large (and really large) websites and applications? (Think, the size of YouTube, Apache or Facebook.) if the answer for the Q above is a big "hell, yes!" then, I should probably prefer Cherokee, right? Because, since I am a beginner, it would a lot easier to setup Cherokee as it has a graphical admin user interface + really good documentation. Yes? I could be wrong, I could be right. I put down what I know so that you can offer most relevant advise. Pardon if anything I've said is offensive.

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• Windows 8 Pro Homegroup Not Allowing Access to Shared Files

  - by Jack Herr

  I have two pc's and a laptop. With all three running Windows 7, homegroup worked perfectly, with all computers able to access the files on the others exactly as one would expect. I installed Windows 8 Pro, which I downloaded recently from the MSDN website, on the laptop. From the info on the MSDN website, I believe the version downloaded is the official release version, not a release candidate. The install preserved all settings, apps, and files. I cannot connect to the homegroup from the laptop. Well, not exactly. I joined the homegroup during the install, and later left and rejoined, that was advertised as being offered by one of the pc's (not sure why that one was picked and not the other or both). This homegroup appears in my "computer" folder in the file explorer, offering files from that pc. But it excludes documents (only the music, pix, videos, and playlists folders on the one computer appear). I can actually access those files from the laptop. But the Homegroup folder, which actually shows all the computers by account and computer name and includes documents from both computers, does not open those folders when clicked. The computers listed by name in the Network folder give me a login that doesn't work. It asks for a username and password, no combinations of which work. Further, the following error message appears before the login is even attempted: "The system cannot contact a domain controller to service the authentication request. Please try again later." The two windows 7 pc's continue to share all files, including documents, seemlessly. I can also get to the laptop shared files, which I shared during setup, from either pc. Any ideas?

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• Is it possible for a faulty processor to cause audio static/noise?

  - by Tom

  I have a Core 2 Extreme processor I received from a friend and have set up an XBMC box using it. However, I constantly get audio static whenever playing any music or videos. Here is a video of the sound: http://www.youtube.com/watch?v=SqKQkxYRVA4 I have tried replacing everything short of the case and the processor, including cables, audio interfaces, operating systems, ram, etc, leading me to think it might be either the case shorting out the motherboards I have tried or a faulty processor. Is it possible for a faulty processor to cause audio static/noise? Any feedback would be appreciated. Edit - Here's a list of things I have tried: Reinstalling OS Installing/upgrading/repairing PulseAudio/Alsa Installing alternate OSes, straight Ubuntu, Lubuntu, Xubuntu, Arch, Mint, Windows 7 Switching audio from the external card to internal Optical, audio out through HDMI, audio out through headphones Different ports on receiver (my main desktop sounds fine on the same sound system) Different optical cables Unplugging everything unnecessary from the motherboard (1 HD, 1 Stick of Ram, 1 Keyboard) Swapping out ram Swapping out the motherboard Replacing the Graphics Card (was replaced due to fan being noisy, not specifically for this problem) Different harddrives Swapping power supply Disabling onboard audio Switching Power Cable Plugging in through surge protector Plugging into different outlet on separate circuit

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• httpd.config Easy Apache WHM CentOS

  - by jessie

  First let me explain how I got to this situation. I run a Streaming Video Site. Videos are about 100-250MB in size at any given time there are 500 people on the site. So I guess that would make then static. Recently My site started getting really slow and the only way to fix it temporarily was to restart apache. Now there was no change in traffic that could have caused this. My site is not being attacked. My hosting company recomended to implement mpm_mod and suPHP. They did that by using Easy Apache in WHMS. Then everything was working fine but a little slow. I researched around and to my understanding that mpm will do that but be more table. I was told that installing FastCGI would speed things up just enough. Well that made everything worse. The site is slow and time's out. I used WHM and took off fastCGI but its still the same, it seems like everything i do as of now nothing changes. I even did a roll back on the htconfig file but that didn't work. I'm not sure how to fix this. and my hosting network guy wont be able to touch the problem until Tuesday. I have root access.

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• Windows 7 ssh file server.

  - by Siriss

  Hello all- I have looked at the other posts, but have not quite found an answer I have a question about windows file sharing over SSH. I have copssh installed and it is working for Remote desktop connections. I have port 22 forwarded on my router etc. I connect from a Mac or Putty with this address: ssh -l copsshusername 3391:localhost:3389 [external ip] That works fine. I would like to configure Windows 7 to allow my ssh account that I use to login, access to certain shared folders. I have documents and videos and things that I would like to be able to download externally. I have done this before on Linux and a long time ago on XP, but I cannot figure out what I am missing on Windows 7. There is a designated SSH user that copssh uses to run the service and that I use to to login as. I have googled and googled and have not found a solution that does everything I need that is why I am turning here for ideas. I hope I am explaining this correctly. Thank you very much for your help!

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• Why is writing to my external hard drive slow, while benchmarks show fast writing?

  - by matix2267

  I have an iOmega eGo 320GB portable drive connected through USB2.0 to my laptop running Windows Vista. It's been working fine for quite some time until recently it became very slow when writing e.g. when copying ~300MB movie over to the drive at first it is extremely fast but it actually doesn't write it only puts in cache and then hangs on last 10-20MBs for about a minute. When copying larger files it's the same story: starts fast but then slows down to ~5MB/s (sometimes even slower down to 2MB/s). Strange thing is that I have always had caching disabled for this drive (it was disabled by default and I never bothered changing it). At first I thought that the disk is dying so I checked S.M.A.R.T. values and everything is fine there. I also run chkdsk and it seemed to fix the problem - it worked fast for a few minutes but then it slowed down again. I also tried plugging it into another USB port - no difference. Additionally I noticed that reading under certain circumstances is sometimes slower e.g. loading times for some games are ~10 times longer, whereas simple copying files from this drive to my internal HDD is fast. I ran a speed benchmark using CrystalDiskMark with a 5x100MB run and strangely got these results: read write (MB/s) Seq 33.05 28.25 512k 17.30 15.27 4k 0.267 0.372 4kQD32 0.510 0.260 This is different from what most other people have (I've found many threads about slow disk write while googling but all of them were slow on benchmarks too) which is why I decided to post this problem here. BTW most of the time when writing (or sometimes reading) the activity led is mostly idle (blinks a while and then stops for longer, sometimes has slower blinks ~1 sek, sometimes goes off for a few seconds - extremely long blink :) ) but when benchmarking, defragmenting or just reading (copying from this drive, installing apps from installers there, watching HD videos) it is blinking really fast (like it should) and there are no slowdowns. It shouldn't be driver issue unless stock Windows drivers have some issues I'm not aware of.

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