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I changed the AUGraphNodeInfo line so that it would also try and get the AudioComponentDescription of the node, just for kicks. The modified code is as follows:
AudioComponentDescription testDescription; result = AUGraphNodeInfo(graph, mixerNode, &testDescription, &mixer);
Simple. The same error occurs sometimes. The error was also intermittent previously, so there is no actual improvement here. Now, I placed a breakpoint right after the line I just showed, and on the runs when the exception is hit, testDescription is as follows:
componentType = 44992093, componentSubType = 3221216376, componentManufacturer = 44992603, componentFlags = 78815960, componentFlagsMask = 33924
Now, when that exception isn't hit, the same paramErr is later encountered by the AUGraphStart() function, so I'm assuming it is just postponing the issue.
componentType = 1635085688, componentSubType = 1835232632, componentManufacturer = 1634758764, componentFlags = 0, componentFlagsMask = 0
Any ideas?
Sincerely, Carter Allen
On Jun 19, 2010, at 2:33 PM, Carter Allen wrote: Hello again!
I am attempting to create an AUGraph with a mixer unit and an output RemoteIO unit. I have been using the iPhoneMultichannelMixerTest project as a reference, and this particular piece of code is almost identical to the corresponding section in the sample project. When running this section of code, I stop on the last exception, when getting the node info for the mixer unit. The OSStatus code received back is -50, which I have read is a paramErr. I'm at a loss for what I'm doing wrong, as this has barely been altered from the sample code (which runs perfectly). Can anyone see what would be causing the paramErr?
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Thanks for any help you can give me!
Sincerely,
Carter Allen
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