Thanks for the deep domain knowledge. I haven't had a chance to look into to it yet. The same iOS call works OK. Does iOS need to support v1 AudioUnits? Could that be why it 'works' on iOS but not Mac?
On Tue, Jul 5, 2016 at 2:48 PM, Doug Wyatt <[email protected]> wrote: > Possibly the buffer list's mNumberBuffers is inconsistent with the output > bus's format, or its mBuffers' mDataByteSize members are inconsistent with > the supplied frame count. > > The rule of thumb for AudioBufferList function parameters is: if the API > is going to store something into the buffer list, on entry mDataByteSize > expresses capacity, on exit, the number of valid frames. In the case of > AudioUnitRender, however, it's slightly different (due to compatibility > with V1) -- on entry, mDataByteSize must be exactly the frame count times > the number of bytes per frame. > > Doug > > > > On Jul 3, 2016, at 14:55 , Mazzaroth M. <[email protected]> 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 protected]> > 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 > > > > > > _______________________________________________ > > Do not post admin requests to the list. They will be ignored. > > Coreaudio-api mailing list ([email protected]) > > Help/Unsubscribe/Update your Subscription: > > https://lists.apple.com/mailman/options/coreaudio-api/dwyatt%40apple.com > > > > This email sent to [email protected] > >
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