2014/10/15 下午 10:10:34

iphone Programming Glossary: ioactionflags

http://stackoverflow.com/questions/6930609/write-audio-to-disk-from-io-unit

sizeof stereoStreamFormat static OSStatus masterChannelMixerUnitCallback void inRefCon AudioUnitRenderActionFlags ioActionFlags const AudioTimeStamp inTimeStamp UInt32 inBusNumber UInt32 inNumberFrames AudioBufferList ioData ref.equnit AudioUnitRender.. UInt32 inNumberFrames AudioBufferList ioData ref.equnit AudioUnitRender engineDescribtion.channelMixers inBusNumber ioActionFlags inTimeStamp 0 inNumberFrames ioData Engine engine Engine inRefCon AudioUnitRender engineDescribtion.equnit ioActionFlags.. inTimeStamp 0 inNumberFrames ioData Engine engine Engine inRefCon AudioUnitRender engineDescribtion.equnit ioActionFlags inTimeStamp 0 inNumberFrames ioData if engine isrecording ExtAudioFileWriteAsync engine recordingfileref inNumberFrames..

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

audio file And the recording callback static OSStatus recordingCallback void inRefCon AudioUnitRenderActionFlags ioActionFlags const AudioTimeStamp inTimeStamp UInt32 inBusNumber UInt32 inNumberFrames AudioBufferList ioData if ioActionFlags.. const AudioTimeStamp inTimeStamp UInt32 inBusNumber UInt32 inNumberFrames AudioBufferList ioData if ioActionFlags kAudioUnitRenderAction_PostRender inBusNumber 0 EffectState effectState EffectState inRefCon ExtAudioFileWriteAsync effectState.. callback is running if you find that there's no data in the buffers ioData wrap this code around your callback code if ioActionFlags kAudioUnitRenderAction_PostRender your code This is needed because a callback added in this way runs both before and after..

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

for audio file the recording call back static OSStatus recordingCallback void inRefCon AudioUnitRenderActionFlags ioActionFlags const AudioTimeStamp inTimeStamp UInt32 inBusNumber UInt32 inNumberFrames AudioBufferList ioData NSLog @ callback.. inTimeStamp UInt32 inBusNumber UInt32 inNumberFrames AudioBufferList ioData NSLog @ callback if ioActionFlags kAudioUnitRenderAction_PostRender inBusNumber 0 AudioBufferList bufferList Fill this up with buffers you will want to malloc.. getAudioUnit OSStatus status NSLog @ de5eal el call back BELOW I GET THE ERROR status AudioUnitRender rioUnit ioActionFlags inTimeStamp inBusNumber inNumberFrames bufferList if noErr status NSLog @ AudioUnitRender error return noErr Now..