Question

How to use Extended Audio File Services: ExtAudioFileRead to Performs a synchronous, sequential read operation on an audio file.

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"theme" 
                                                     ofType:@"mp3"];

NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:filePath];

audioPlayer = [[AVAudioPlayer alloc] 
               initWithContentsOfURL:fileURL error:nil];

[fileURL release];

How i can Performs a synchronous, sequential read operation on theme audio file. Currently have AVFoundation.Framework and should i add CoreAudio.Framework too.

Answer 1

To use Extended Audio File services, you’ll need to link to AudioToolbox.framework

Opening and reading a file using this API is fairly involved. There’s some good information here, and the Documentation.

For my part, I’ve found the headers in AudioToolbox.framework to have the best documentation. See ExtAudioFile.h