iphone Programming Glossary: recordingcallback

How 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 never called effectState.rioUnit iOUnit AURenderCallbackStruct renderCallbackStruct renderCallbackStruct.inputProc recordingCallback renderCallbackStruct.inputProcRefCon effectState result AudioUnitSetProperty iOUnit kAudioUnitProperty_SetRenderCallback.. Solution 2 my app crashes at launch on this AURenderCallbackStruct renderCallbackStruct renderCallbackStruct.inputProc recordingCallback renderCallbackStruct.inputProcRefCon effectState result AUGraphSetNodeInputCallback processingGraph iONode 0 Output bus.. noErr result self printErrorMessage @ AudioUnitSetProperty withStatus result return AudioUnitAddRenderNotify iOUnit recordingCallback effectState and the file setup if noErr result self printErrorMessage @ AUGraphInitialize withStatus result return On..

Can anybody help me in recording iPhone output sound through Audio Unit

http://stackoverflow.com/questions/8615358/can-anybody-help-me-in-recording-iphone-output-sound-through-audio-unit

audioFormat sizeof audioFormat Set input callback AURenderCallbackStruct callbackStruct callbackStruct.inputProc recordingCallback callbackStruct.inputProcRefCon self status AudioUnitSetProperty audioUnit kAudioOutputUnitProperty_SetInputCallback .. NSAssert setupErr noErr @ Couldn't initialize write buffers for audio file the recording call back static OSStatus recordingCallback void inRefCon AudioUnitRenderActionFlags ioActionFlags const AudioTimeStamp inTimeStamp UInt32 inBusNumber UInt32.. for init internal buffers setupErr ExtAudioFileWriteAsync effectState.audioFileRef 0 NULL That's what's going wrong in recordingCallback 1 ioActionFlags are always 0 and inBusNumber are always 1 because thats how you setup your callback kInputBus 1 if ioActionFlags..

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