Almost there with ExtAudioFile
Almost there with ExtAudioFile
- Subject: Almost there with ExtAudioFile
- From: Fernando Valente <email@hidden>
- Date: Tue, 3 Aug 2010 17:11:33 -0300
'm almost there with ExtAudioFile. Recording on my app is almost working. There are 2 things I'm still not able do. First is to set the kExtAudioFileProperty_FileDataFormat. I keep getting the -1 error. The second problem is that I don't know what to enter as values for inNumberFrames and ioData in ExtAudioFileWriteAsync. This is my code:
url = (CFURLRef)[NSURL URLWithString:documents];
CAStreamBasicDescription clientFormat, dstFormat;
clientFormat.SetCanonical(1, true);
clientFormat.mSampleRate = 44100.0;
printf("Source file format: ");
clientFormat.Print();
OSStatus status;
destinationFile = NULL;
dstFormat.mFormatID = kAudioFormatAppleIMA4;
dstFormat.mSampleRate = 44100.0;
dstFormat.mChannelsPerFrame = 1;
UInt32 size = sizeof(dstFormat);
status = AudioFormatGetProperty(kAudioFormatProperty_FormatInfo, 0, NULL, &size, &dstFormat);
NSLog(@"%d", status);
printf("Destination file format: ");
dstFormat.Print();
status = ExtAudioFileCreateWithURL(url, kAudioFileCAFType, &dstFormat, NULL, kAudioFileFlags_EraseFile, &destinationFile);
NSLog(@"%d", status);
size = sizeof(clientFormat);
status = ExtAudioFileSetProperty(destinationFile, kExtAudioFileProperty_ClientDataFormat, size, &clientFormat);
NSLog(@"%d", status);
status = ExtAudioFileSetProperty(destinationFile, kExtAudioFileProperty_FileDataFormat, size, &clientFormat);
NSLog(@"%d", status);
Fernando Valente
Chiaro Software
email@hidden
http://www.chiarosoft.com
http://www.twitter.com/chiarosoftware
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