Mediapicker'dan şarkı alıp onu uygulamaya kaydetmek için bir uygulama yapıyorum. Dosya boyutunu azaltmak istiyorum, ancak "AACConverter" adlı bir örnek aldım. uygulama ancak dosya boyutunu azaltmıyor. Herhangi biri bana bu sorunu çözmede yardımcı olabilir.IOS'taki ses dosyası boyutu nasıl azaltılabilirim
- (IBAction)convert:(id)sender {
if (![TPAACAudioConverter AACConverterAvailable]) {
[[[[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Converting audio", @"")
message:NSLocalizedString(@"Couldn't convert audio: Not supported on this device", @"")
delegate:nil
cancelButtonTitle:nil
otherButtonTitles:NSLocalizedString(@"OK", @""), nil] autorelease] show];
return;
}
// Initialise audio session, and register an interruption listener, important for AAC conversion
if (!checkResult(AudioSessionInitialize(NULL, NULL, interruptionListener, self), "initialise audio session")) {
[[[[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Converting audio", @"")
message:NSLocalizedString(@"Couldn't initialise audio session!", @"")
delegate:nil
cancelButtonTitle:nil
otherButtonTitles:NSLocalizedString(@"OK", @""), nil] autorelease] show];
return;
}
// Set up an audio session compatible with AAC conversion. Note that AAC conversion is incompatible with any session that provides mixing with other device audio.
UInt32 audioCategory = kAudioSessionCategory_MediaPlayback;
if (!checkResult(AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(audioCategory), &audioCategory), "setup session category")) {
[[[[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Converting audio", @"")
message:NSLocalizedString(@"Couldn't setup audio category!", @"")
delegate:nil
cancelButtonTitle:nil
otherButtonTitles:NSLocalizedString(@"OK", @""), nil] autorelease] show];
return;
}
NSArray *documentsFolders = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
audioConverter = [[[TPAACAudioConverter alloc] initWithDelegate:self
source:[[NSBundle mainBundle] pathForResource:@"audio" ofType:@"mp3"]
destination:[[documentsFolders objectAtIndex:0] stringByAppendingPathComponent:@"audio.m4a"]] autorelease];
NSLog(@"destinatiion path is %@",[[documentsFolders objectAtIndex:0]stringByAppendingFormat:@"audio.m4a"]);
((UIButton*)sender).enabled = NO;
[self.spinner startAnimating];
self.progressView.progress = 0.0;
self.progressView.hidden = NO;
[audioConverter start];
}
- (IBAction)playConverted:(id)sender {
if (audioPlayer) {
[audioPlayer stop];
[audioPlayer release];
audioPlayer = nil;
[(UIButton*)sender setTitle:@"Play converted" forState:UIControlStateNormal];
} else {
NSArray *documentsFolders = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [[documentsFolders objectAtIndex:0] stringByAppendingPathComponent:@"audio.m4a"];
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
[audioPlayer play];
[(UIButton*)sender setTitle:@"Stop" forState:UIControlStateNormal];
}
}
- (IBAction)emailConverted:(id)sender {
NSArray *documentsFolders = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [[documentsFolders objectAtIndex:0] stringByAppendingPathComponent:@"audio.m4a"];
MFMailComposeViewController *mailController = [[MFMailComposeViewController alloc] init];
mailController.mailComposeDelegate = self;
[mailController setSubject:NSLocalizedString(@"Recording", @"")];
[mailController addAttachmentData:[NSData dataWithContentsOfMappedFile:path]
mimeType:@"audio/mp4a-latm"
fileName:[path lastPathComponent]];
[self presentModalViewController:mailController animated:YES];
}
#pragma mark - Audio converter delegate
-(void)AACAudioConverter:(TPAACAudioConverter *)converter didMakeProgress:(CGFloat)progress {
self.progressView.progress = progress;
}
-(void)AACAudioConverterDidFinishConversion:(TPAACAudioConverter *)converter {
self.progressView.hidden = YES;
[self.spinner stopAnimating];
self.convertButton.enabled = YES;
self.playConvertedButton.enabled = YES;
self.emailConvertedButton.enabled = YES;
audioConverter = nil;
}
-(void)AACAudioConverter:(TPAACAudioConverter *)converter didFailWithError:(NSError *)error {
[[[[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Converting audio", @"")
message:[NSString stringWithFormat:NSLocalizedString(@"Couldn't convert audio: %@", @""), [error localizedDescription]]
delegate:nil
cancelButtonTitle:nil
otherButtonTitles:NSLocalizedString(@"OK", @""), nil] autorelease] show];
self.convertButton.enabled = YES;
audioConverter = nil;
}
bazı sonrası olabilir Eğer
Audacity (serbest Açık kaynak) kullanan öneririm code – jimpic
merhaba jimpic cevabınız için teşekkürler .. kod – girish
kodudur Kodunuzu düzgün bir şekilde biçimlendirebilirsiniz. – Almo