We are working on an application where barcode image is captured using that device Webcam.
Now we need to show the information (decoded information) in the bar code in a text box. Is there any Javascript API or Plugin to decode the barcode information?
The QuaggaJS library supports barcode streaming from webcam
For browsers that support WebAssembly (85%+ coverage with adoption of iOS 11), you can use this Javascript library that decodes directly from a video feed.
npmjs.com/package/scandit-sdk
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I am looking to support playing DRM into custom player which is built using NDK C++ library as plugin which decodes, converts and then perform some image processing before final presentation. In this scenario, what is the best way to support DRM (I will use NDK's Crypto and DRM interfaces) given that documentation hints at only supporting MPEG-DASH format, which is not natively supported.
Clarify if any of my assumptions are incorrect or there are simple libraries (like libdash) which can solve the problem. Extreme solution in ExoPlayer but current infrastructure is built using C++ and NDK interface to leverage hardware decoders, which excludes that as an option.
If your image processing requires access to the raw image then unfortunately you won't (or you shouldn't!) be able to do this as encrypted video is designed to play via a secure media path which does not allow access to the raw video.
I'm developing an embedded DLNA audio media renderer in C++ which will capture audio stream and use it as a source for LED controller to create visual effects.
Currently I have chosen gupnp library. Its documentation claims that it can generate C code "scaffold" if I feed it with a correct service description XML file.
I read DLNA specifications documentation but it's not easy to put all the absolute minimal requirements together. For now, I know only that I'll need ConnectionManager, RenderingControl and maybe AVTransport service but I'm not sure which methods will be absolutely required to allow the device to receive mp3/aac/wav audio streams from any DLNA media server/radio streamer etc. out there.
I'll be grateful for information where to find such a template or instructions for building a DLNA compatible XML audio renderer template (MediaRenderer:1 should work fine) with minimum required functions and variables to feed into UPNP generator tools (specifically, gupnp).
I have an app that I have written using Xamarin forms. I wanted to know if there is any media
class I could use to record audio as well as stream audio from a server. All articles I have found on the web are platform specific so far.
thanks in advance
There currently isn't any audio support in Xamarin.Forms. You will need to write platform specific code for handling the audio and use the XF DependencyService (or something similar) to call it from your shared code.
I have written an NPAPI browser plug-in (using Firebreath) that Unity uses
to access a Kinect camera. I can retrieve skeleton data from Unity through JavaScript easily since it isn't too big, but the problem is in retrieving color image data.
Is it possible to send a native texture pointer (GetNativeTexturePtr)
from Unity through JavaScript into the C++ plug-in so that it can write the texture data directly? (tested in standalone version and it works)
Any other suggestions on how to transfer image data from browser plug-ins to Unity web player are very welcome.
Unfortunately NPAPI plugins do not contain any mechanisms for exchanging binary data with the page. Probably the most performant way of doing that that I know of would be to base64 encode it and send it as part of a string.
Note that strings in NPAPI are UTF8.
The only way to get anything from Unity in your plugin would be to use the javascript interface, so you can use whatever methods you can find and then pass the data into your plugin; however, note that Unity is most likely running in another process, so you probably can't use any direct memory pointers that you might get from it.
I need some links to record both microphone and audio in all the applications. I'm developing a audio recorder feature for an application.
I tried intercepting some APIs like IDirectSound and Wave API but I'm missing something since some applications are recorder and some others aren't.
Can someone send me a clue around this?
Best Regards.
In my compary we've developed an Audio Recorder SDK because it's very difficult to make all the hooks you need to intercept all the applications. You should hook MCI Wave API calls, IDirectSound interface and the new IAudioClient interface, part of the Windows Vista / Windows 7 Core Audio engine.
Our SDK supports Skype 4.x and 5.x, G-Talk and Msn. We've tested with other applications and it's working but we don't support them.
Additionally, we bring some UI features such as handling button clicks and get windows text using the SDK.
I hope this information can help you.