Error in AudioFileWritePackets

Question

i'm just trying to capture the mic and save data to wav file ! and here is the code:

AudioFileID FileID=remoteIOplayer->mixAudioFile;
if (inBusNumber == 16){
    AudioUnitRender(audioUnit, ioActionFlags, inTimeStamp, 1, inNumberFrames, ioData);
    OSStatus result = AudioFileWritePackets(FileID, false, (inNumberFrames * 4), NULL, mixpacketNum, &inNumberFrames, ioData->mBuffers[i].mData);
    if (result != noErr){
        NSLog(@"Error Writing");
        mixpacketNum += inNumberFrames;
}
}

and i created the file correctly with the following format that also used to capture the mic:

audioFormat.mSampleRate         = 44100.00;
    audioFormat.mFormatID           = kAudioFormatLinearPCM;
    audioFormat.mFormatFlags        = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
    audioFormat.mFramesPerPacket    = 1;
    audioFormat.mChannelsPerFrame   = 1;
    audioFormat.mBitsPerChannel     = 16;
    audioFormat.mBytesPerPacket     = 2;
    audioFormat.mBytesPerFrame      = 2;

the error is result OSStatus -38 fnopnerr (file not open)

score 1 · Accepted Answer · answered Feb 13 '12 at 08:04

1

I'm guessing that your call to open the audio file either failed or wasn't done before rendering started. What does your call to AudioFileCreateWithURL look like?

answered Feb 13 '12 at 08:04

Nik Reiman

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Error in AudioFileWritePackets

1 Answers1