Apple

> On Jul 3, 2016, at 14:55 , Mazzaroth M. <email@hidden> wrote:
>
> I investigated this further and I added this code to increase the number of frames per timeslice:
>
> UInt32 numFrames = 4096; // 3756
> AudioUnitSetProperty(outputUnit, kAudioUnitProperty_MaximumFramesPerSlice, kAudioUnitScope_Global, 0, &numFrames, sizeof(numFrames));
>
> OSStatus status = AudioUnitRender(outputUnit, 0, timeStamp, 0, (UInt32)bufferLength, bufferList);
>
> I no longer get the -10874 status error. But now I get a different error, kAudio_ParamError(-50)
>
> The params appear OK so I'm not sure why this is happening.
>
> (lldb) po outputUnit
> 0x00000000809c806a
>
> (lldb) po timeStamp
> 0x00007fff5fbfeaa0
>
> (lldb) po bufferLength
> 3756
>
> (lldb) po bufferList
> 0x0000618000044e90
>
> (lldb) po self.engine
>
> ________ GraphDescription ________
> AVAudioEngineGraph 0x6100001c03c0: initialized = 1, running = 0, number of nodes = 4
>
> ******** output chain ********
>
> node 0x6080000a12c0 {'auou' 'ahal' 'appl'}, 'I'
> inputs = 1
> (bus0) <- (bus0) 0x6100000c8ff0, {'aumx' 'mcmx' 'appl'}, [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved]
>
> node 0x6100000c8ff0 {'aumx' 'mcmx' 'appl'}, 'I'
> inputs = 1
> (bus0) <- (bus0) 0x6000000c2a00, {'aufx' 'dist' 'appl'}, [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved]
> outputs = 1
> (bus0) -> (bus0) 0x6080000a12c0, {'auou' 'ahal' 'appl'}, [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved]
>
> node 0x6000000c2a00 {'aufx' 'dist' 'appl'}, 'I'
> inputs = 1
> (bus0) <- (bus0) 0x6100001804e0, {'augn' 'sspl' 'appl'}, [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved]
> outputs = 1
> (bus0) -> (bus0) 0x6100000c8ff0, {'aumx' 'mcmx' 'appl'}, [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved]
>
> node 0x6100001804e0 {'augn' 'sspl' 'appl'}, 'I'
> outputs = 1
> (bus0) -> (bus0) 0x6000000c2a00, {'aufx' 'dist' 'appl'}, [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved]
> ______________________________________
>
>
>
> (lldb) po self.engine.outputNode
> <AVAudioOutputNode: 0x600000000a00>
>
> (lldb) po self.engine.outputNode.audioUnit
> 0x00000000809c806a
>
> regards,
> Michael
>
> On Sat, Jul 2, 2016 at 4:37 PM, Mazzaroth M. <email@hidden> wrote:
> I'm trying to covert some Objective-C offline render code from iOS 8 to macOS 10.11. However I'm getting a kAudioUnitErr_TooManyFramesToProcess(-10874) error when I call AudioUnitRender()
>
> The error does not occur on iOS.
>
> The (broken) code is available here.
>
> https://bitbucket.org/sidha/offline-render-mac/src/cc3ba589565bf97d3700e91ef7b1e7806c6c9298/OfflineRender/ViewController.m?at=master&fileviewer=file-view-default#ViewController.m-229
>
> Any ideas?
> Michael
>
>

References:
	>AudioUnitRender results in kAudioUnitErr_TooManyFramesToProcess (From: "Mazzaroth M." <email@hidden>)
	>Re: AudioUnitRender results in kAudioUnitErr_TooManyFramesToProcess (From: "Mazzaroth M." <email@hidden>)
	>Re: AudioUnitRender results in kAudioUnitErr_TooManyFramesToProcess (From: Doug Wyatt <email@hidden>)