RemoteIO vs AUGraphAddNode on iOS
RemoteIO vs AUGraphAddNode on iOS
- Subject: RemoteIO vs AUGraphAddNode on iOS
- From: Patrick Shirkey <email@hidden>
- Date: Thu, 10 Nov 2011 05:24:27 +0100 (CET)
- Importance: Normal
Hi,
I asked Apple Developer Support and they [c/w]ouldn't provide an answer
for me
Can anyone tell me why this code works:
----------
AUNode outputNode;
// create a new AUGraph
result = NewAUGraph(&mGraph);
if (result) { printf("NewAUGraph result %ld X %4.4s\n", result,
(unsigned int)result, (char*)&result); return; }
// output unit
CAComponentDescription output_desc(kAudioUnitType_Output,
kAudioUnitSubType_RemoteIO, kAudioUnitManufacturer_Apple);
result = AUGraphAddNode(mGraph, &output_desc, &outputNode);
if (result) { printf("AUGraphNewNode 1 result %lu %4.4s\n", result,
(char*)&result); return; }
-----------
But this code doesn't:
-----------
AUNode outputNode;
AUNode delayNode;
// create a new AUGraph
result = NewAUGraph(&mGraph);
if (result) { printf("NewAUGraph result %ld X %4.4s\n", result,
(unsigned int)result, (char*)&result); return; }
// output unit
CAComponentDescription output_desc(kAudioUnitType_Output,
kAudioUnitSubType_RemoteIO, kAudioUnitManufacturer_Apple);
// delay unit
CAComponentDescription delay_desc(kAudioUnitType_Output,
kAudioUnitSubType_RemoteIO, kAudioUnitManufacturer_Apple);
result = AUGraphAddNode(mGraph, &output_desc, &outputNode);
if (result) { printf("AUGraphNewNode 1 result %lu %4.4s\n", result,
(char*)&result); return; }
result = AUGraphAddNode(mGraph, &delay_desc, &delayNode);
if (result) { printf("AUGraphNewNode 2 result %lu %4.4s\n", result,
(char*)&result); return; }
---------
--
Patrick Shirkey
Boost Hardware Ltd
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