2014/10/15 下午 10:09:09

iphone Programming Glossary: float32

http://stackoverflow.com/questions/5032775/drawing-waveform-with-avassetreader

mx mx x #define noiseFloor 90.0 #define decibel amplitude 20.0 log10 absX amplitude 32767.0 UIImage audioImageLogGraph Float32 samples normalizeMax Float32 normalizeMax sampleCount NSInteger sampleCount channelCount NSInteger channelCount imageHeight.. #define decibel amplitude 20.0 log10 absX amplitude 32767.0 UIImage audioImageLogGraph Float32 samples normalizeMax Float32 normalizeMax sampleCount NSInteger sampleCount channelCount NSInteger channelCount imageHeight float imageHeight CGSize.. imageHeight float channelCount normalizeMax noiseFloor 2 for NSInteger intSample 0 intSample sampleCount intSample Float32 left samples float pixels left noiseFloor sampleAdjustmentFactor CGContextMoveToPoint context intSample centerLeft pixels..

How to copy songs from iPod Library to app and play with AVAudioPlayer?

http://stackoverflow.com/questions/7472141/how-to-copy-songs-from-ipod-library-to-app-and-play-with-avaudioplayer

0 blockBuffer for int y 0 y audioBufferList.mNumberBuffers y AudioBuffer audioBuffer audioBufferList.mBuffers y Float32 frame audioBuffer.mData Float32 currentSample frame i data appendBytes frame length audioBuffer.mDataByteSize written.. y AudioBuffer audioBuffer audioBufferList.mBuffers y Float32 frame audioBuffer.mData Float32 currentSample frame i data appendBytes frame length audioBuffer.mDataByteSize written fwrite frame sizeof Float32 audioBuffer.mDataByteSize.. Float32 currentSample frame i data appendBytes frame length audioBuffer.mDataByteSize written fwrite frame sizeof Float32 audioBuffer.mDataByteSize f NSLog @ Wrote d written totalBuff CFRelease blockBuffer CFRelease ref fileHandle writeData..

iOS 5.0 crash when reading data from an AVAssetReaderOutput

http://stackoverflow.com/questions/7812394/ios-5-0-crash-when-reading-data-from-an-avassetreaderoutput

NULL 0 blockBuffer for int y 0 y audioBufferList.mNumberBuffers y AudioBuffer audioBuffer audioBufferList.mBuffers y Float32 frame audioBuffer.mData NSLog @ Gonna write d audioBuffer.mDataByteSize crashes here data appendBytes frame length audioBuffer.mDataByteSize.. release continue for int y 0 y audioBufferList.mNumberBuffers y AudioBuffer audioBuffer audioBufferList.mBuffers y Float32 frame Float32 audioBuffer.mData data appendBytes frame length audioBuffer.mDataByteSize totalBuff CFRelease blockBuffer.. for int y 0 y audioBufferList.mNumberBuffers y AudioBuffer audioBuffer audioBufferList.mBuffers y Float32 frame Float32 audioBuffer.mData data appendBytes frame length audioBuffer.mDataByteSize totalBuff CFRelease blockBuffer CFRelease ref..