[iOS] webrtc in iOS with UIWebview with audio element make error

[何知翰]

hi,there. My iOS app is using webrtc to connect with video and audio.And there is a UIWebview to use for two people. And when UIWebview load a audio,and play it.

I can get error:

(RTCLogging.mm:31): (audio_device_ios.mm:442 OnGetPlayoutData): Expected 512 frames but got 1115

(RTCLogging.mm:31): (audio_device_ios.mm:377 OnDeliverRecordedData): Expected 512 frames but got 1115

(RTCLogging.mm:31): (audio_device_ios.mm:380 OnDeliverRecordedData): Session:

 RTCAudioSession: {

  category: AVAudioSessionCategoryPlayAndRecord

  categoryOptions: 1

  mode: AVAudioSessionModeVoiceChat

  isActive: 1

  sampleRate: 22050.00

  IOBufferDuration: 0.023220

  outputNumberOfChannels: 2

  inputNumberOfChannels: 1

  outputLatency: 0.001043

  inputLatency: 0.000272

}

And I can not listen each other.

webrtc version is 54.

Is there some method to fix this bug?

thanks!.

[Henrik Andreasson]

It is difficult to say for sure given the we don't have access to your application.

Please use the AppRTCMobile demo application and try to reproduce using it and then file an issue in the WebRTC issue tracker.

Thanks

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[何知翰]

I modify the AppRTCMobile file.ARDVideoCallViewController.m add an UIWebView.

and play the sound in the webview.

Then rtc sound was lost.

And we try to plug the headset in iPhone.Or unplug the headset. AppRTCMobile was Crashed...

Is there some method to fix this problem? Thank you

在 2016年12月12日星期一 UTC+8下午8:13:58，Henrik Andreassson写道：

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[Henrik Andreasson]

For issues that can be reproduced in AppRTCMobile, please file a bug report.

Add as many details as possible, device, OS version, crash logs etc.

Removing/adding a wired headset works for me (and has worked for a long time)

in the latest WebRTC revision. 

Regarding the changes in ARDVideoCallViewController, it is difficult to comment without understanding what you want to accomplish.  Try to upload a CL showing the changes you have done and explain the goal of your changes.

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[何知翰]

I've send a bug report.

I'm only add a webview.nothing change..

在 2016年12月30日星期五 UTC+8下午7:32:34，Henrik Andreassson写道：

[Tuan-Ngoc Le]

Hi, 

I'm facing the same problem. Any update on this issue?

Thanks,

[Hamst]

WebRTC uses AudioUnit to play data, it means that AVAudioSession was acquired in exclusive way and you're not able to mix sound from webview and webrtc at the same time. You can look at http://stackoverflow.com/questions/13472406/play-sound-file-together-with-audiounit to try to play sound during webrtc call.

понедельник, 12 декабря 2016 г., 14:18:52 UTC+3 пользователь 何知翰 написал:

[Tuan-Ngoc Le]

Thank you very much for your reply, @Hamst.

It means it's impossible to have video/audio stream while opening a web view which contains a sound. We actually don't want to play any sound on our web view however we are using a canvas in the web app. That canvas doesn't play any sound, but somehow it still affects to WebRTC streaming.

Regards