Apple

On Jun 5, 2008, at 12:15 PM, Jeff LaMarche wrote:

I'm doing a playthrough from selected input to selected output, running it through a variable speed conversion AU. In my record call back procedure, I'm buffering the raw data before I process it because the output will generally be the line out and the conversion will cause a downsampling that I don't want in the final file. The buffering is done like so:

const AudioBuffer *buffer;
buffer = &inInputData->mBuffers[0];
if (lastIndex + buffer->mDataByteSize> bufferSize)
// cancels recording
else
{
memcpy(soundBuffer + lastIndex, buffer->mData, buffer->mDataByteSize);
lastIndex += buffer->mDataByteSize;
}

soundBuffer is just defined as:

unsigned char *soundBuffer;

Is there an easy way to write this raw data to an AIFF file without messing with callbacks and devices? The documentation and sample code all show how to write a file from AudioBufferList *s in the device callback, but I don't want to put it out to disk unless the user presses a button to approve it, at which time I've got the data in memory (these are short sound recordings) already.

Any help or suggestions would be greatly appreciated.

References:
	>Writing file from raw audio in memory? (From: Jeff LaMarche <email@hidden>)