2014/10/15 下午 10:14:18

iphone Programming Glossary: songtrack

Extract iPod Library raw PCM samples and play with sound effects

http://stackoverflow.com/questions/4796643/extract-ipod-library-raw-pcm-samples-and-play-with-sound-effects

songAsset NSError error nil AVAssetReader reader AVAssetReader alloc initWithAsset songAsset error error AVAssetTrack songTrack songAsset.tracks objectAtIndex 0 AVAssetReaderTrackOutput output AVAssetReaderTrackOutput alloc initWithTrack songTrack.. songAsset.tracks objectAtIndex 0 AVAssetReaderTrackOutput output AVAssetReaderTrackOutput alloc initWithTrack songTrack outputSettings nil reader addOutput output output release NSMutableData fullSongData NSMutableData alloc init reader startReading..

Drawing waveform with AVAssetReader

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

to get data for drawing waveform I need info about peak values how I can get it this maybe another way AVAssetTrack songTrack audioUrl.tracks objectAtIndex 0 AVAssetReaderTrackOutput output AVAssetReaderTrackOutput alloc initWithTrack songTrack outputSettings.. songTrack audioUrl.tracks objectAtIndex 0 AVAssetReaderTrackOutput output AVAssetReaderTrackOutput alloc initWithTrack songTrack outputSettings nil reader addOutput output output release NSMutableData fullSongData NSMutableData alloc init reader startReading.. songAsset NSError error nil AVAssetReader reader AVAssetReader alloc initWithAsset songAsset error error AVAssetTrack songTrack songAsset.tracks objectAtIndex 0 NSDictionary outputSettingsDict NSDictionary alloc initWithObjectsAndKeys NSNumber numberWithInt..