lixing123

-(NSString*)descriptionForAudioFormat:(AudioStreamBasicDescription) audioFormat
{
    NSMutableString *description = [NSMutableString new];
    
    // From https://developer.apple.com/library/ios/documentation/MusicAudio/Conceptual/AudioUnitHostingGuide_iOS/ConstructingAudioUnitApps/ConstructingAudioUnitApps.html (Listing 2-8)
    char formatIDString[5];
    UInt32 formatID = CFSwapInt32HostToBig (audioFormat.mFormatID);
    bcopy (&formatID, formatIDString, 4);
    formatIDString[4] = '\0';