2014/10/15 下午 10:11:13

iphone Programming Glossary: m4a

http://stackoverflow.com/questions/2014578/sound-on-simulator-but-not-device

on simulator but not device I'm using the following to play an m4a file NSString path NSBundle mainBundle resourcePath stringByAppendingPathComponent fileName SystemSoundID soundID NSURL.. device file localhost var mobile Applications 418945F3 3711 4B4D BC65 0D78993C77FB African 20Adventure.app Switch 201.m4a Is there an issue with the file path or any thing different I need to do for the device iphone cocoa touch core audio ..

Play multiple audio files using AVAudioPlayer

http://stackoverflow.com/questions/2586284/play-multiple-audio-files-using-avaudioplayer

the sample file NSURL fileURL NSURL alloc initFileURLWithPath NSBundle mainBundle pathForResource @ sample ofType @ m4a void audioPlayerDidFinishPlaying AVAudioPlayer player successfully BOOL flag if flag NO NSLog @ Playback finished unsuccessfully..

Playing html5 audio in android browser

http://stackoverflow.com/questions/3069124/playing-html5-audio-in-android-browser

Testing using a htc desire with android 2.1. Anyone know why My code function playHTML5 sound soundcv sound url to m4a audio file soundcv div in which the audioplayer should go var audio document.createElement 'audio' audio.src sound audio.controls..

Audio Processing: Playing with volume level

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

best way to do things It assumes your file is little endian 16 bit signed linear PCM. Most WAV files are but not AIFF m4a mp3 etc. I'd use the ExtAudioFile API instead of the AudioFile API as this will convert any format you're reading into whatever..

How do I register a custom filetype in iOS

http://stackoverflow.com/questions/4186401/how-do-i-register-a-custom-filetype-in-ios

a custom filetype in iOS I am currently creating a app in which i want to let the user backup their files plist m4a . I zip the files and change the extension to a custom one specifically for my app say .MyBackup . The user can then either..

How to record voice in .m4a format

http://stackoverflow.com/questions/4279311/how-to-record-voice-in-m4a-format

to record voice in .m4a format Already I have created an iPhone application to record. It will record in .caf file. But I want to record in .m4a.. format Already I have created an iPhone application to record. It will record in .caf file. But I want to record in .m4a format. Please help me to do this. iphone avaudiorecorder m4a share improve this question Here is an alternative code.. It will record in .caf file. But I want to record in .m4a format. Please help me to do this. iphone avaudiorecorder m4a share improve this question Here is an alternative code sample that will encode the file as AAC inside an m4a NSArray..

2 mp3 sounds at the same time in iphone?

http://stackoverflow.com/questions/5026105/2-mp3-sounds-at-the-same-time-in-iphone

remember to release them when you're done NSString path NSBundle mainBundle pathForResource @ YOUR_FILE_NAME ofType @ m4a AVAudioPlayer objAudio AVAudioPlayer alloc initWithContentsOfURL NSURL fileURLWithPath path error NULL objAudio.delegate..

How to use FLAC in iPhone application?

http://stackoverflow.com/questions/5796375/how-to-use-flac-in-iphone-application

application I'm developing iPhone app that should use Google Voice API so my app should convert voice recorded in m4a to flac. Of course I should use libflac but all my attempts to compile static library for iOS were failed due to linker..

Convert M4a to Mp3

http://stackoverflow.com/questions/7027696/convert-m4a-to-mp3

file to Mp3 file i try to use the TSlibraryimport but it not doing this proccess . it can be done also by moving the m4a file to nsdata iphone objective c share improve this question You can try to use CoreAudio and LAME codec this isn't..

AudioQueue how to find out playback length of queued data

http://stackoverflow.com/questions/7375309/audioqueue-how-to-find-out-playback-length-of-queued-data

to grab the amount of bytes from a music file that correspond to x seconds the example has been tested with mp3 and m4a files Header #import Foundation Foundation.h #import AudioToolbox AudioToolbox.h @interface MusicChunker NSObject AudioFileID.. NSFileHandle _fileHandle int _packetOffset int _totalReadBytes int _maxPacketSize BOOL firstTime BOOL _ism4a id initWithURL NSURL url andFileType NSString ext gets next chunk that corresponds to seconds of audio NSData getNextDataChunk.. else if fileExtension isEqual @ aiff fileTypeHint kAudioFileAIFFType else if fileExtension isEqual @ m4a fileTypeHint kAudioFileM4AType else if fileExtension isEqual @ mp4 fileTypeHint kAudioFileMPEG4Type else if fileExtension..

Application crashed while importing songs from Ipod library in Iphone for iOs 5.0

http://stackoverflow.com/questions/8077725/application-crashed-while-importing-songs-from-ipod-library-in-iphone-for-ios-5

fileType @ com.apple.quicktime movie ex @ mp3 break case kAudioFormatMPEG4AAC fileType @ com.apple.m4a audio ex @ m4a break case kAudioFormatAppleLossless fileType @ com.apple.m4a audio ex @ m4a break default break return.. fileType @ com.apple.quicktime movie ex @ mp3 break case kAudioFormatMPEG4AAC fileType @ com.apple.m4a audio ex @ m4a break case kAudioFormatAppleLossless fileType @ com.apple.m4a audio ex @ m4a break default break return ex #pragma mark.. kAudioFormatMPEG4AAC fileType @ com.apple.m4a audio ex @ m4a break case kAudioFormatAppleLossless fileType @ com.apple.m4a audio ex @ m4a break default break return ex #pragma mark Covert Item separate item collection and store songs into directory..

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 aac using.. a very similar problem where I was attempting to use Extended Audio File Services in order to stream PCM sound into an m4a file on an iPad 2. Everything appeared to work except that every call to ExtAudioFileWrite returned the error code 66567.. encoding but the software codecs can more reliably do what you want. In my case the software codec translation to m4a takes 50 longer than writing the exact same file to LPCM format. Does anyone know whether Apple specifies somewhere what..

Best way to play simple sound effect in iOS

http://stackoverflow.com/questions/9791491/best-way-to-play-simple-sound-effect-in-ios

a simple sound in iOS no more than 30 seconds NSString path NSBundle mainBundle pathForResource @ soundeffect ofType @ m4a NSURL pathURL NSURL fileURLWithPath path SystemSoundID audioEffect AudioServicesCreateSystemSoundID CFURLRef pathURL audioEffect..