I am new in playing audio sound. I am stuck in problem where I wanted to mute other application sound when my application is playing music sound and resume back when I stop my application's sound. I searched a lot but I could not get any solution.
Below code is for playing audio sound:-
var url:NSURL = NSURL.fileURLWithPath(NSBundle.mainBundle().pathForResource("\(soundFile)", ofType: "mp3")!)!
let audioPlayer1 = AVAudioPlayer(contentsOfURL: url, error: nil)
audioPlayer1!.numberOfLoops = -1
if(audioPlayer1 == nil)
{
println("error in playing")
}
else
{
audioPlayer1!.play()
}
You need to configure the AVAudioSession category :
AVAudioSession Class Reference : http://goo.gl/rh7CX7 . Look for which fit the most for your application. You only need to set it once in your code (make sure it's called).
AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategorySoloAmbient, error: nil) // AVAudioSessionCategorySoloAmbient is default
AVAudioSession.sharedInstance().setActive(true, error: nil)
If it didn't help, please provide more information (which app isn't mute ? what have you tried ? ...).
Related
I have an app that records audio and video using AVFoundation. I want any audio playback from other apps (or the system) to continue while recording audio in my app, but when adding the input to the session an already playing audio from another app gets magically muted.
The corresponding code looks like this:
// set up audio device
if(m_audioenabled) {
print("Audio enabled")
if self.m_audioDevice != nil {
do {
let audioinput = try AVCaptureDeviceInput(device: self.m_audioDevice!)
if self.m_session.canAddInput(audioinput) {
self.m_session.addInput(audioinput)
}
} catch _ {
print("failed adding audio capture device as input to capture session")
}
}
m_audioDataOutput = AVCaptureAudioDataOutput()
m_audioDataOutput?.setSampleBufferDelegate(self, queue: self.m_captureSessionQueueAudio)
if self.m_session.canAddOutput(m_audioDataOutput!){
self.m_session.addOutput(m_audioDataOutput!)
}
}
If I comment out the call to canAddInput(...) the audio keeps playing, when I call it, audio playback gets muted.
How can I disable that behavior ?
Please note the migrating to another Audio-API is not an option.
Sounds like your AVAudioSession is non-mixable (the default, I think). Try activating a mixable audio session before you set up the AVCaptureSession:
let session = AVAudioSession.sharedInstance()
try! session.setCategory(AVAudioSessionCategoryPlayAndRecord, with: [.mixWithOthers])
try! session.setActive(true)
I have an app that needs to have:
Background music playing while using the app (eg. spotify)
Background music playing while watching movie from AVPlayer
Stop the music when recording a video
Like Snapchat, the camera-viewcontroller is part of a "swipeview" and therefore always on.
However, when opening and closing the app, the music makes a short "crack" noise/sound that ruins the music.
I recorded it here:
https://soundcloud.com/morten-stulen/hacky-sound-ios
(3 occurrences)
I use these settings for changing the AVAudiosession in the appdelegate didFinishLaunchingWithOptions:
do {
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayAndRecord,withOptions:
[AVAudioSessionCategoryOptions.MixWithOthers,
AVAudioSessionCategoryOptions.DefaultToSpeaker])
try AVAudioSession.sharedInstance().setActive(true)
} catch {
print("error")
}
I use the LLSimpleCamera control for video recording and I've set the session there to:
_session.automaticallyConfiguresApplicationAudioSession = NO;
It seems others have the same problem with other camera libraries as well:
https://github.com/rFlex/SCRecorder/issues/127
https://github.com/rFlex/SCRecorder/issues/224
This guy removed the audioDeviceInput, but I kinda need that for recording video.
https://github.com/omergul123/LLSimpleCamera/issues/48
I also tried with Apple's code "AvCam", and I still have the same issue. How does Snapchat do this?!
Any help would be greatly appreciated, and I'll gladly provide more info or code!
I do something similar to what you're wanting, but without the camera aspect, but I think this will do what you want. My app allows background audio that will mix with non-fullscreen video/audio. When the user plays an audio file or a full screen video file, I stop the background audio completely.
The reason I do SoloAmbient then Playback is because I allow my audio to be played in the background when the device is locked. Going SoloAmbient will stop all background music playing and then switching to Playback lets my audio play in the app as well as in the background.
This is why you see a call to a method that sets the lock screen information in the Unload method. In this case, it is nulling it out so that there is no lock screen info.
In AppDelegate.swift
//MARK: Audio Session Mixing
func allowBackgroundAudio()
{
do {
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback, withOptions: .MixWithOthers)
} catch {
NSLog("AVAudioSession SetCategory - Playback:MixWithOthers failed")
}
}
func preventBackgroundAudio()
{
do {
//Ask for Solo Ambient to prevent any background audio playing, then change to normal Playback so we can play while locked
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategorySoloAmbient)
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
} catch {
NSLog("AVAudioSession SetCategory - SoloAmbient failed")
}
}
When I want to stop background audio, for example when playing an audio track that should be alone, I do the following:
In MyAudioPlayer.swift
func playUrl(url: NSURL?, backgroundImageUrl: NSURL?, title: String, subtitle: String)
{
ForgeHelper.appDelegate().preventBackgroundAudio()
if _mediaPlayer == nil {
self._mediaPlayer = MediaPlayer()
_mediaPlayer!.delegate = self
}
//... Code removed for brevity
}
And when I'm done with my media playing, I do this:
private func unloadMediaPlayer()
{
if _mediaPlayer != nil {
_mediaPlayer!.unload()
self._mediaPlayer = nil
}
_controlView.updateForProgress(0, duration: 0, animate: false)
ForgeHelper.appDelegate().allowBackgroundAudio()
setLockScreenInfo()
}
Hope this helps you out!
I am using an AVAudioEngine object, that has many AVAudioPlayerNodes attached to it. The audio all works fine, except it stops any audio that the iPhone is playing in the background (i. e. from iTunes or another music app).
When my app is opened, it stops any other background audio. Is there a way to allow background audio to continue to play? Even when my app is using AVAudioPlayerNodes to play audio itself?
Music App has it's own audioSession, that makes audio engine stops, i had that problem too, please restart after music app.
func stepB_startEngine(){
if engine.running == false {
do { try engine.start() }
catch let error {
print(error)
}
}
}
setup audioSettion also:
func setUpAudioSession(){
do {
try AVAudioSession.sharedInstance().setCategory(.ambient, options: .mixWithOthers)
try AVAudioSession.sharedInstance().setActive(true, options: .notifyOthersOnDeactivation)
} catch let error {
print(error)
}
}
I have a Countdown Timer app that counts down but does not beep and crashes when it hits 0 if the phone is locked or on a different app.
I found this 3 year old link for Objective C objective c play music in the background
but the only thing I could figure was to add "Application does not run in background to Info.plist and set it to "No"
Here is my function to play it:
func timerBeep() {
// preperation
AVAudioSession.sharedInstance().setCategory("AVAudioSessionCategoryPlayback", error: nil)
AVAudioSession.sharedInstance().setActive(true, error: nil)
// play sound
var error: NSError?
audioPlayer = AVAudioPlayer(contentsOfURL: sound, error: &error)
audioPlayer.prepareToPlay()
audioPlayer.play()
}
Hello I tried the various solutions to similar questions but couldnt get my code to work. I have the following function that I call in my app:
func PlaySound (WhenToPlaySound:String) {
AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayAndRecord, error: nil)
AVAudioSession.sharedInstance().setActive(true, error: nil)
if WhenToPlaySound == "BeginningOfRound" {
if UIApplication.sharedApplication().applicationState == UIApplicationState.Background {
soundnotification.soundName = "BoxingBellStart.wav"
UIApplication.sharedApplication().scheduleLocalNotification(soundnotification)
println("timer is done in background mode")
} else {
// Load Sound
soundlocation = NSBundle.mainBundle().URLForResource("BoxingBellStart", withExtension: "wav")!
player = AVAudioPlayer(contentsOfURL: soundlocation, error: &Error)
player.volume = 1.0
// Play Sound
player.play()
println("timer is done in active mode")
}
} else {
if UIApplication.sharedApplication().applicationState == UIApplicationState.Background {
soundnotification.soundName = "Boxing.wav"
UIApplication.sharedApplication().scheduleLocalNotification(soundnotification)
println("timer is done in background mode")
} else {
// Load Sound
soundlocation = NSBundle.mainBundle().URLForResource("Boxing", withExtension: "wav")!
player = AVAudioPlayer(contentsOfURL: soundlocation, error: &Error)
player.volume = 1.0
// Play Sound
player.play()
println("timer is done in active mode")
}
}
}
Mostly it works except two things:
1. I can't seem to override the speaker volume. I want the system volume to be full volume before I play my sound.
The LocalNotifications that are set to activate when the app is in background mode only pay when the device isn't muted.
To address the first problem I wanted to the following but didnt know how to use it:
AVAudioSession.sharedInstance().overrideOutputAudioPort(<#portOverride: AVAudioSessionPortOverride#>, error: <#NSErrorPointer#>)
Thanks in advance,
Ace
overrideOutputAudioPort affects the audio routing, not the volume.
When you say that you want to "override the speaker volume", I assume that you mean you want to control the system output volume from you app code. This is not possible as Apple believes that output volume should remain in the control of the user at all times.
AVAudioPlayer's volume property sets the volume relative to the system output level. It defaults to 1.0 (player volume == system volume). You can't turn it up higher, spinal-tap style, to 1.1...
See also my answer here ... if you want to take control of the system volume, you will need the user interface provided by MPVolumeView.
Similarly regarding your notifications - if the user has muted the device, your app won't be able to ignore that.
update
regarding notifications, it isn't as straightforward as I suggested. It might work if you set the AVAudioSession category to AVAudioSessionCategoryPlayback (and read the apple docs on this setting).
When using this category, your app audio continues with the Silent switch set to silent or when the screen locks
You may also need to add 'audio' to UIBackgroundModes in your info.plist.