2014/10/15 下午 10:08:41

iphone Programming Glossary: extaudiofilewrite

Audio Processing: Playing with volume level

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

audiofile kExtAudioFileProperty_ClientDataFormat sizeof clientFormat clientFormat write the data err ExtAudioFileWrite audiofile rFrames bufferList close the file ExtAudioFileDispose audiofile destroy the buffers for int ii 0 ii bufferList..

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

to m4a aac failing on dual core devices ipad 2 iphone 4s I wrote a loop to encode pcm audio data generated by my app to.. on ipad 1 and iphone 3gs 4 for both ios 4 and 5. However for dual core devices iphone 4s ipad 2 the third call to ExtAudioFileWrite crashes the encoding thread with no stack trace and no error code. Here is the code in question The data formats AudioStreamBasicDescription.. UInt32 startFrame allData gLoopStartFrame UInt32 lastFrame allData gLoopEndFrame write one silent buffer ExtAudioFileWrite outFile bufferFrames writeBuffer while frameCount lastFrame how many frames do we need to get if lastFrame frameCount bufferFrames..