2014/10/15 下午 10:08:41

iphone Programming Glossary: extaudiofilesetproperty

Audio Processing: Playing with volume level

http://stackoverflow.com/questions/3982723/audio-processing-playing-with-volume-level

fileFormat.mSampleRate clientFormat.mFormatFlags kLinearPCMFormatFlagIsFloat kAudioFormatFlagIsNonInterleaved err ExtAudioFileSetProperty audiofile kExtAudioFileProperty_ClientDataFormat sizeof clientFormat clientFormat find out how many frames we need to read.. NULL kAudioFileFlags_EraseFile audiofile tell the ExtAudioFile API what format we'll be sending samples in err ExtAudioFileSetProperty audiofile kExtAudioFileProperty_ClientDataFormat sizeof clientFormat clientFormat write the data err ExtAudioFileWrite audiofile..

Write Audio To Disk From IO Unit

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

status couldnt create audio file set the capture file's client format to be the canonical format from the queue status ExtAudioFileSetProperty recordingfileref kExtAudioFileProperty_ClientDataFormat sizeof AudioStreamBasicDescription stereoStreamFormat CheckError..

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

effectState.audioFileRef CFRelease destinationURL NSAssert setupErr noErr @ Couldn't create file for writing setupErr ExtAudioFileSetProperty effectState.audioFileRef kExtAudioFileProperty_ClientDataFormat sizeof AudioStreamBasicDescription stereoStreamFormat NSAssert..

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

ExtAudioFileWrite to m4a/aac failing on dual-core devices (ipad 2, iphone 4s)

http://stackoverflow.com/questions/8719865/extaudiofilewrite-to-m4a-aac-failing-on-dual-core-devices-ipad-2-iphone-4s

CFURLRef mixdownURL kAudioFileM4AType mixdownFormat NULL kAudioFileFlags_EraseFile outFile err ExtAudioFileSetProperty outFile kExtAudioFileProperty_ClientDataFormat sizeof AudioStreamBasicDescription localFormat prep AllRenderData allData.. the Codec Manufacturer to software instead of hardware. So place UInt32 codecManf kAppleSoftwareAudioCodecManufacturer ExtAudioFileSetProperty FileToWrite kExtAudioFileProperty_CodecManufacturer sizeof UInt32 codecManf just before you set the client data format...