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2014/10/15 ¤U¤È 10:10:35
iphone Programming Glossary: iounitHow to record sound produced by mixer unit output (iOS Core Audio & Audio Graph) http://stackoverflow.com/questions/7118429/how-to-record-sound-produced-by-mixer-unit-output-ios-core-audio-audio-graph is done just after the Multichannel Mixer unit Setup UInt32 flag 1 Enable IO for playback result AudioUnitSetProperty iOUnit kAudioOutputUnitProperty_EnableIO kAudioUnitScope_Output 0 Output bus flag sizeof flag if noErr result self printErrorMessage.. return can't do that because AudioUnitSetProperty EnableIO error 1073752493 00000000 result AudioUnitSetProperty iOUnit kAudioOutputUnitProperty_EnableIO kAudioUnitScope_Input 0 Output bus flag sizeof flag if noErr result self printErrorMessage.. 2 self printASBD iOStreamFormat Then affect the format and specify sample rate result AudioUnitSetProperty iOUnit kAudioUnitProperty_StreamFormat kAudioUnitScope_Output 1 Input bus iOStreamFormat sizeof iOStreamFormat if noErr result..
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