How could I send MIDI data received be a VST from inside a Host application (Cubase, for example) over LAN to another computer in the network?
The VST plugin framework does not include an inbuilt solution to send MIDI from one plugin to another. It also goes against the assumption of what VST plugins do. Generally VST plugins only communicate with the host application. It is assumed they will not communicate with other plugins or applications.
That being said you could use OSC (Open Sound Control) and whatever TCP/IP networking library you are comfortable with.
not c++ but java - it is the closest thing i know of though:
oscvstbridge
Related
I am trying to implement inter process communication between a desktop native app and an electron app on Windows for assignement(Operating systems).
I am new to this area and not able to find relevant links.
The options I have considered are:
1. TCP
2. HTTP server
3. COM
4. Namedpipes
NamedPipes seem correct, as electron implements its IPC using named pipes. There is a net module available which implements sockets that seem to be similar.
And I can write the server in the native app.
Does this sound correct to you guys? Any better alternatives? Any suggestions which will help me learn will be useful.
Check out the library node-ipc https://github.com/RIAEvangelist/node-ipc which has a range of ways by which you can communicate between node (which is what basically electron is) and other system level processes.
Previously I have work with Windows Form application to establish some RS232 connection. I used the already provided serial port component (SerialPort), and I was able to establish RS232 communication relatively easy.
Now, I was wondering if there will be something similar in Winodows Form application to establish a USB communication ?
It seems there is this WinUSB API that provides a very low level interfacing with the device.
However, I am not sure how easy will that be? Also, not sure how easy will it be to integrate into Windows Form application ?!
Will there be a simpler version of such USB interface API?
I don't have to stick to Visual Studio. Is there other c++ USB API, besides WinUSB, that is more standard that people use? I would like to develop a GUI API that does some communication over USB. If need be, I can use Python or some other tools if it facilitates the process?
Thanks in advance.
Although USB is a serial protocol, you can't treat USB like a serial port:
It's dependant on what the actual device is. For example a mobile phone, may provide several "endpoints" for USB, one being a serial port to use the phone as a modem, one as a storage device allowing you to transfer photos and music files to/from the phones storage, and as a camera device that you can take photos with. All of these have different behaviour and need a USB driver-plugin to make it behave correctly - these are typically shipped with Windows, and your phone will appear as COM5:, the E: or "Samsung Galaxy S3 Mini" drives and as a camera under the "cameras and scanners".
Of course, you can programmatically open all these devices, but it is done as the device-type that they present as on the inside of windows (so you use serial port functions or file functions or camera functions).
You CAN also write a device driver for a device, if you have sufficient details of how it works.
But there's no real way to "open the port". The USB API is a driver API, not a user-mode API. Here's a page to start from to understand USB drivers:
http://msdn.microsoft.com/en-gb/library/windows/hardware/ff540215%28v=vs.85%29.aspx
There is a WinUSB driver, which allows a single application to access a single device, assuming you know how to operate that device.
I have seen several examples of native to browser WebRTC applications, like for streaming video files stored on a server to one or more browsers, but is it possible to do the reverse ? I.e. streaming the webcam from the browser to a server, written in C, C++, Java or other ?
It is possible.
WebRTC is using open standards to stream content over the network. You can find all the details in the following RFCs:
http://tools.ietf.org/wg/rtcweb/
If you want to write your own native application that will receive (and even send) WebRTC media you can either get the WebRTC native code from here: http://www.webrtc.org/webrtc-native-code-package and build it into your solution or alternatively use one of the existing SDKs that can provide you this functionality (depending on which platform you want your native application to run on).
If you want to connect WebRTC to existing hardware like a SIP desk phone, you will need to have some sort of a gateway that will have one leg that will communicate with WebRTC on the browser and the other leg that will communicate with your SIP phone.
There are a lot of commercial solutions already out there, but eventually it all comes down to what your needs are.
I'm trying to implement an auto-connect feature for my Android application DroidPad, which is basically a TCP server running on an Android phone which the PC application connects to.
To make the process easier for the user, is there any way in (portable?) C++ to scan the IP addresses on the local subnet, possibly ones with a certain open port? I've tried using UDP broadcasting, but couldn't get it to work. I'm currently using the wxWidgets toolkit for GUI and libraries.
Any ideas?
I found a solution: wxServDisc. It uses mDNS (aka Zeroconf / Bonjour) to discover devices on a subnet, and is also based on wxWidgets.
Is there any way I can have an integration between Flash AS and C++? Let's say I have created a socket using C++ and multi-casting it to several ip addresses.
On one of the IPs I am running a Flash client. Can I receive the Multicast message (sent by MFC/C++ application) through my Flash application.
Or at least can I develop a Flash plugin (menu item) using C++?
The main objective is I just need to get my hands on anything that shows the communication/interaction between C++ and Flash.
Depends on what you would like to do. If you host the swf's in your application you can use the ExtenalInterface in flash via the ActiveX container. http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/external/ExternalInterface.html
We are using that method in our project, check it out (open source): http://www.casparcg.com/
If you want to talk to swf's outside your application Sockets would do the job I guess.
http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/net/Socket.html