Question:
I have the following code snippet:
OSStatus status = AudioFileWriteBytes(self.audioFile, FALSE, self.startingByte, &ioNumBytes, theData); The status code randomly returns noErr and -50 on the iPhone simulator.
It then works if I re-run it.
Any pointer is appreciated why the above code behaves randomly.
Thanks in advance for your help.
Solution:1
I think I found my issue.
The original code with the problem:
// Start OSStatus status = AudioOutputUnitStart(self.ioUnit); // Record the audio samples and save it to a file [self createFile]; The new code that fixed the problem. Notice the "createFile" is called first before calling AudioOutputUnitStart
// Record the audio samples and save it to a file [self createFile]; // Start // Once AudioOutputUnitStart is called, it will start calling callback method quickly. We need to call the above [self createFile] first. OSStatus status = AudioOutputUnitStart(self.ioUnit); The AudioOutputUnitStart calls the callback method which will write audio samples to a file. Since the file has been created/opened before AudioOutputUnitStart, now the audio samples are written to the file without any error.
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