2014/10/15 下午 10:10:27

iphone Programming Glossary: innumberframes

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

inRefCon AudioUnitRenderActionFlags ioActionFlags const AudioTimeStamp inTimeStamp UInt32 inBusNumber UInt32 inNumberFrames AudioBufferList ioData ref.equnit AudioUnitRender engineDescribtion.channelMixers inBusNumber ioActionFlags inTimeStamp.. 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 ioData return 0 the recording..

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

inRefCon AudioUnitRenderActionFlags ioActionFlags const AudioTimeStamp inTimeStamp UInt32 inBusNumber UInt32 inNumberFrames AudioBufferList ioData if ioActionFlags kAudioUnitRenderAction_PostRender inBusNumber 0 EffectState effectState EffectState.. inBusNumber 0 EffectState effectState EffectState inRefCon ExtAudioFileWriteAsync effectState audioFileRef inNumberFrames ioData return noErr There is something missing in the output file output.caf . I'm totally lost in formats to apply. iphone.. this to your callback SInt16 dataLeftChannel SInt16 ioData mBuffers 0 .mData for UInt32 frameNumber 0 frameNumber inNumberFrames frameNumber NSLog @ sample lu d frameNumber dataLeftChannel frameNumber This will slow your app so much that it will probably..

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

inRefCon AudioUnitRenderActionFlags ioActionFlags const AudioTimeStamp inTimeStamp UInt32 inBusNumber UInt32 inNumberFrames AudioBufferList ioData NSLog @ callback if ioActionFlags kAudioUnitRenderAction_PostRender inBusNumber 0 AudioBufferList.. 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 we have the samples we just read sitting in.. Now we have the samples we just read sitting in buffers in bufferList ExtAudioFileWriteAsync effectState audioFileRef inNumberFrames bufferList return noErr then stop Recording void stopRecord AudioOutputUnitStop audioUnit AudioUnitUninitialize audioUnit..