headphones

Is there a way to get notified whenever a headphone jack is unplugged in a WinRT app? I want to be able to pause MediaElement playback when it happens to prevent the sound from leaking out through loudspeakers. Jack detection notification is exposed through IMMNotificationClient::OnDeviceStateChanged. Just tried it on win8 desktop, OnDeviceStateChanged gets called with DEVICE_STATE_UNPLUGGED and DEVICE_STATE_ACTIVE when (un)plugging a device. Sadly that part of wasapi is documented as desktop only so i guess there's no way to do it in WinRT. Try the following: Windows::Devices::Enumeration:

We're looking to send some serial data out from the headphone jack, but would like to still be able to play audio from the speakers. Is it possible to send output to both? If so, is it possible to send different audio to each? Not as far as I'm aware. You can get programatic notification of when the routing has changed (i.e. when someone connects a headphone cable), but you are unable to specify which device(s) to use for output. 来源： https://stackoverflow.com/questions/10215923/ios-is-it-possible-to-send-audio-out-both-headphones-and-speakers-at-the-same-t

I'm currently dealing with a new project and I have to send data through headphone jack with specific voltage, then i can work on that voltage. so here i need to program the specific voltage depends on my data. is it possible that i can access the output voltage of headphones in android and then create a application to control that voltage? davehale23 Here is a HackADay article dealing with this issue. http://hackaday.com/2010/02/01/android-audio-serial-connection/ It offers working code which was quite a bit simpler than I thought it would be. Although, like others have suggested, including

Is there any event in JavaScript, I can listen to in browser, through which we can know whether headphones are inserted or removed? I assume if we are able to iterate over devices of audio output in JavaScript, is there a possibility, we can deduct the change in the number of audio output devices? You can use the following: https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices example: navigator.mediaDevices.addEventListener('devicechange', () => { // Do whatever you need to with the devices // Maybe use enumerateDevices() to see what connected }); You could check the devices already

I've been trying to get this to work for a while now. I've done everything they say in the documentation and still got nothing. This is the code in my app delegate that registers for local notifications: - (void) registerForLocalNotifications { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_accessoryConnected:) name:EAAccessoryDidConnectNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_accessoryDisconnected:) name:EAAccessoryDidDisconnectNotification object:nil]; [[EAAccessoryManager sharedAccessoryManager]

Trying to figure out how to read the Apple headphone's volume buttons to use as a trigger for the camera shutter (as the Apple Camera app does). From the documentation on Remote Control Events , Remote Control Received With Event , and this git repo , I've pieced together that I'll probably need an AVAudioPlayer object, .beginReceivingRemoteControlEvents() , and remoteControlReceivedWithEvent , along with making this view canBecomeFirstResponder() return true . import UIKit import AVFoundation class ViewController: UIViewController, AVAudioPlayerDelegate { var player: AVAudioPlayer! override