When I connect a Sony Reader to an USB port “USB connected” is shown on the Reader. When the Sony “Reader Library” software is started this message changes to “Do not disconnect”. I want to implement this in a software tool to. There seems to be no file locked. Perhaps it is done via ebookUsb.dll. Does anybody know how this is done from any programming language? I like to see an example.
There is an Unofficial Sony Reader SDK, try experimenting with that.
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I have an usb-camera with its drivers and dll with some functions to use this camera in my solutions. I want to use it in any wide-spread applications, to be able just to choose and use it in Skype, for instance. So. I want to develop something that will allow me to use this device as usual web-camera.
I've heard something about such technologies as "Upper-Level Filter Drivers" and "user-mode DirectShow source filter". Looks like it something that can help.
So the question is: what technologies exist for such tasks? What technology should I choose to solve my problem if I have no skills of driver development?
Skype still uses DirectShow for video capture and user mode filter will do the job. Still Skype makes certain unreasonable assumptions that limit compatible source filters, such as if the developers stopped development/testing as soon as they had their favorite USB cam working and ignoring all other devices users might possibly want to attach.
One of the options you were suggested (in Russian - 1, 2) was to develop a kernel mode driver so that your device is visible to apps through standard WDM Video Capture Filter. This is possible and would work, though in my opinion it is a huge overkill.
Fitting custom source filter is not easy because Skype does not like a debugger attached, however driver development is really a completely different story.
The Skype Forum link you refer to is clearly misleading. The poster complains that Skype update broke compatibility with video sources. And response from admin is about audio devices, and is irrelevant.
I have a single button USB controller, but it did not come with any drivers (simply a Windows program that communicates with it directly for its intended purpose).
USB Fidget
Vendor ID: 0x1d34
Product ID: 0x0001
Product name: DL100A Dream Cheeky Generic Controller
So, I would like to be able to read whether or not the button is being pressed. My main development environment is Mac, but I'd like the solution to run on Windows too. So ideally a cross platform solution would be best.
I can find pieces of code for other devices by the same manufacturer but there are differences in Product ID so the code does not work and I lack understanding to change anything other than the vendor/product.
As far as I understand it I need to poll the USB device with a feature request packet?
Is there some software I can use to "watch" the USB device so I can see what is actually happening when I press the button? If not, how would I go about writing some myself?
basically on MacOs very huge amount of usb devices work through IOUserClient. This standart class provide to user mode programs ability to control device without kernel mode driver (by using usermode part of IOKit framework). To sniff for usb packets you can use USB Prober, start from this article http://developer.apple.com/library/mac/#qa/qa1370/_index.html
On windows standart way - standart USB driver + standart HID driver, no need in specific vendor driver if they not develop some additional functionality over standart. You can use any of commercial or freeware tools to sniff usb packets - like this one http://www.hhdsoftware.com/usb-monitor
I don't know of any cross platform way to handle it. This is the presentation I point people to for how to create a driver app for a random piece of HID hardware:
https://developer.apple.com/videos/wwdc/2011/?id=207
For testing / accessing HID devices, i.e.
Get Feature Report (matt's original question)
Sending Feature Reports
Sending Output Reports
Receiving Input reports
I'd suggest the "HIDAPI Test Tool" / "testgui" included in the great cross-platform HID library from signal11/hidapi.
On Windows you require an additional 3rd party package to compile the testgui application, but it was pretty easy and the GUI tool was more straightforward that other code examples and tools I saw. (I could cross-check if I am maybe allowed to publish a VS2008 compiled version of this.)
Another free option for sending output reports and receiving input reports, is our own "Docklight" tool (in evaluation mode, unlimited time, just no storing), see Docklight Scripting HID USB.
Can i develop an Adobe AIR application without Flash Builder?
I want to run it from command line. If you have any example please share with me.
You can use Flash Develop as an alternative to Flash Builder, which is opensource / free.
Flash Develop is the best open source tool .
Yes. You need the Flex SDK which is available free of charge here. This means you need to hook it up with an IDE of your choice. The flip side is you won't have any debugger to help you along.
Note, Adobe offers free licenses of FlashBuilder for students and unemployed professionals too! See this.
Is there currently any API (public or private) that will allow a 3rd party Mac OS X application to stream audio to AirPlay receivers? Airfoil by Rogue Amoeba Software seems to be able to do this, same goes for Erica Sadun's AirFlick, but I was unable to find any source code that would demonstrate how to do this. Any pointers are appreciated!
Here is an open source ruby implementation. It's pretty straight forward. https://github.com/elcuervo/airplay
It turns out AirPlay audio streaming is possible as of OS X 10.8 using public APIs, but wasn't really documented anywhere. Joris Kluivers wrote a great blog post on how to get it going.
There are a couple of open-source RAOP players available; I haven't tried them, so I don't know if Apple has broken them since they were written.
Mountain Lion (OS X 10.8) has added AirPlay support in the sound settings. The user can choose to send the local sound output to an AirPlay device. However, I don't think that you have access to any API within your app.
There are some libraries available to implement AirPlay, but know that Apple will reject your app if you try to publish it on the App Store. At least, that's what happened to me.
I wrote a node.js module to support AirPlay. Even if you don't use node, you can just pipe your audio data through stdin.
https://github.com/lperrin/node_airtunes/
I don't think it's available. At least not in versions prior to 10.7.
I'm guessing that Airfoil uses something like DVD John did a while ago when he cracked the Airport Express key payload. He released the code (C#) you should be able to find it but it's pretty cryptic.
I'm not aware of what AirFlick uses but you could always try pinging Erica, she usually shares her stuff.
Someone recently managed to obtain the AirPlay private key which allows you to have your program listed in the AirPlay menus on devices on your network.
You can read about it here. There is also an open source project linked from that page.
http://mafipulation.org/blagoblig/2011/04/08#shairport
Be aware that obviously any application you create will never be approved by apple and the private key could potentially be changed in a firmware/software update.
Edited on April 29th, content changed
Hello everyone,
I recently bought a Sony Ericsson mobile phone and I would like to add a missing feature myself. In fact I cannot actually disable Internet connection in an easy way when roaming, which cost me a lot of money last time I moved away ... So I would like to develop a little application that would just replace the actual Internet configuration with a fake configuration to avoid auto-connections.
So what I would like to know is how can I access programmatically to my phone settings? I know that Sony Ericsson provides a SDK to run Java applications on its customised JVM. So what I am actually looking for is to know if they extended the J2ME functionality to fit their devices requirements.
This is not well documented so I am asking this question with the hope that someone here already had experience with development targeted for Sony Ericsson devices.
Thanks.
NB: This is a Sony Ericsson Elm which is based on the Sony Ericsson OS with SE Java Platform 8.5.
Edit: I accepted QuickRecipesOnSymbianOS answer as it gave me a clue on the only feature that could have helped me, but which is unfornatunately missing. The Sony Ericsson Java Platform is the only API I could use to develop real programs on my phone. But the JP-8.5 does not implement the JSR-307 package which could help me in managing APN. Thanks everyone for your help.
Well, I hope you got the great Vivaz phone, not the Satio.
In order to learn about Symbian OS C++, first go to the Foundation website.
Relevant plug: the latest introduction to Symbian OS C++ in book form is Quick Recipes on Symbian OS
For now, you won't find a better way than Symbian OS C++ to manipulate your handset access points.
JavaME simply doesn't have the correct APIs for this, at least not until JSR-307 is implemented.
I believe Qt isn't integrated quite tightly enough just yet either but that should change soon enough. Keep an eye on it.
Extending the Symbian Python runtime to do what you want would require some Symbian OS C++ anyway.
Yes you will need to use Symbian C++ to modify the CommDB, which holds the list of connections. It is quite painful to work with it directly, but there are some utility classes that can help you out. Take a look at CApSelect, CApDataHandler and CApAccessPointItem, all in the developer library.
And yes, these will work on all modern Symbian handsets, independent of brand.
Note: My answer below assumed it was about a symbian device. Since it was actually a J2me device none of the below applies
The easiest way to achieve what you want to do is probably to just remove all the "destinations" when you want to prevent auto connections. Otherwise the device will test each destination in turn until it finds one that works.
You can also set up your destinations so that they are not allowed to be used automatically. This setting must be done individually for each destination.
You can also group your destinations and set one of the groups to the default. If you set the default to an empty group you should not get any automatic connections.
Note that I have not tested any of these methods myself. When I roam I turn off automatic updates in the apps that use them. Some apps can even detect when you are roaming and avoid auto connects.
There are S60 apps available that improves the connection management of vanilla S60, but I do not know if any of them can help you with your problem.
If you are dead set on doing the programming yourself you have to use the C++ SDK for Symbian S60 available from Forum Nokia. Java ME does not allow you to manipulate the destinations of the device.
The Elm device should have (I haven't verified this) the access point API originally designed by Nokia. Not sure whether you can use it for the purpose you want though. The J2me developer guidelines available from developer.sonyericsson.com should have all the information you need.