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Re: Alesis Protrack for Line Outs

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Re: Alesis Protrack for Line Outs

Subject: Re: Alesis Protrack for Line Outs
From: Hamilton Feltman <email@hidden>
Date: Mon, 16 Nov 2009 16:26:58 -0800

Hi Tony,

I'm using play and record, because the app is a multitrack recorder. I just tried to use MediaPlayback, and it works, with "NewDeviceAvailable" comes "LineOut". Of course this doesn't solve my problem, but it's one step closer I hope? This explains why the ipod player works through the lineout, but it doesn't explain why iProRecorder works (iProRecorder must use PlayAndRecord). (I checked the log when running iProRecorder, it throws the same exceptions)

Thanks,
Hamilton

Here is my apps log for using the MediaPlayback category:

Mon Nov 16 15:15:38 unknown iapd[1628] <Warning>: Microphone arrived Mon Nov 16 15:15:39 unknown mediaserverd[17] <Notice>: 15:15:39.340 <vad> EXCEPTION: VirtualAudio_Device.cpp[2415]: GetActivePortCount(): kVirtualAudioObjectRoutingNotSupportedError: "routing not supported." Mon Nov 16 15:15:39 unknown mediaserverd[17] <Notice>: 15:15:39.342 <vad> EXCEPTION: VirtualAudio_Device.cpp[2498]: GetActiveNonQuiesceablePortCount(): kVirtualAudioObjectRoutingNotSupportedError: "routing not supported." Mon Nov 16 15:15:39 unknown mediaserverd[17] <Notice>: 15:15:39.344 <vad> EXCEPTION: VirtualAudio_Device.cpp[2415]: GetActivePortCount(): kVirtualAudioObjectRoutingNotSupportedError: "routing not supported." Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: ----------------------------- PropertyListener ----------------------------- Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: AudioRouteChange Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: Reason: NewDeviceAvailable Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: Old AudioRoute: Speaker Mon Nov 16 15:15:39 unknown mediaserverd[17] <Notice>: 15:15:39.459 <vad> EXCEPTION: VirtualAudio_Device.cpp[2415]: GetActivePortCount(): kVirtualAudioObjectRoutingNotSupportedError: "routing not supported." Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: New AudioRoute: LineOut Mon Nov 16 15:15:39 unknown mediaserverd[17] <Notice>: 15:15:39.559 <vad> ERROR: Device_Codec_Aspen.cpp[558]: SetPropertyData(): Illegal call to set property kAudioDevicePropertyVolumeDecibels. Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: (AudioComponentInstanceDispose) Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: Getting Input Availability: (kAudioSessionNoError) Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: AudioCategory - > MediaPlayback: (kAudioSessionNoError) Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: AudioSessionSetActive(true): (kAudioSessionNoError) Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: ----------------------------- initializeRIO ----------------------------- Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: ----------------------------- setBufferSize ----------------------------- Mon Nov 16 15:15:39 unknown MultiTrack[1630] <Warning>: ----------------------------- SetRecordingAvailabilityMessage ----------------------------- ...

Mon Nov 16 15:16:20 unknown iapd[1628] <Warning>: Microphone left Mon Nov 16 15:16:20 unknown MultiTrack[1630] <Warning>: ----------------------------- PropertyListener ----------------------------- Mon Nov 16 15:16:20 unknown MultiTrack[1630] <Warning>: AudioRouteChange Mon Nov 16 15:16:20 unknown MultiTrack[1630] <Warning>: Reason: OldDeviceUnavailable Mon Nov 16 15:16:20 unknown MultiTrack[1630] <Warning>: Old AudioRoute: LineOut Mon Nov 16 15:16:20 unknown MultiTrack[1630] <Warning>: New AudioRoute: Speaker Mon Nov 16 15:16:20 unknown mediaserverd[17] <Notice>: 15:16:20.513 <vad> EXCEPTION: VirtualAudio_Device.cpp[2415]: GetActivePortCount(): kVirtualAudioObjectRoutingNotSupportedError: "routing not supported." Mon Nov 16 15:16:20 unknown mediaserverd[17] <Notice>: 15:16:20.515 <vad> EXCEPTION: VirtualAudio_Device.cpp[2498]: GetActiveNonQuiesceablePortCount(): kVirtualAudioObjectRoutingNotSupportedError: "routing not supported." Mon Nov 16 15:16:20 unknown mediaserverd[17] <Notice>: 15:16:20.516 <vad> EXCEPTION: VirtualAudio_Device.cpp[2415]: GetActivePortCount(): kVirtualAudioObjectRoutingNotSupportedError: "routing not supported." Mon Nov 16 15:16:20 unknown mediaserverd[17] <Notice>: 15:16:20.570 <vad> EXCEPTION: VirtualAudio_Device.cpp[2415]: GetActivePortCount(): kVirtualAudioObjectRoutingNotSupportedError: "routing not supported." Mon Nov 16 15:16:20 unknown MultiTrack[1630] <Warning>: (AudioComponentInstanceDispose) Mon Nov 16 15:16:20 unknown MultiTrack[1630] <Warning>: Getting Input Availability: (kAudioSessionNoError) Mon Nov 16 15:16:20 unknown MultiTrack[1630] <Warning>: AudioCategory - > MediaPlayback: (kAudioSessionNoError) Mon Nov 16 15:16:20 unknown MultiTrack[1630] <Warning>: AudioSessionSetActive(true): (kAudioSessionNoError) Mon Nov 16 15:16:20 unknown MultiTrack[1630] <Warning>: ----------------------------- initializeRIO ----------------------------- Mon Nov 16 15:16:20 unknown MultiTrack[1630] <Warning>: ----------------------------- SetRecordingAvailabilityMessage ----------------------------- ...

On Nov 16, 2009, at 3:02 PM, Tony Guetta wrote:

Hi Hamilton,
Which Audio Session category is your application using? If it's kAudioSessionCategory_PlayAndRecord, what happens if you try a playback-only category, e.g. kAudioSessionCategory_MediaPlayback? Does the line-out of the device function then?

Tony


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References:  
  >Alesis Protrack for Line Outs (From: Hamilton Feltman <email@hidden>)
  >Re: Alesis Protrack for Line Outs (From: Tony Guetta <email@hidden>)




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