问题:

Does anybody know of any examples using AudioQueue that play from an in-memory source?

All the examples I can find play from files (using AudioFileReadPackets) but in my particular case I am generating the data myself in realtime so ideally, I want to enqueue the data myself rather than sucking it out of a file using the callback.

Any help much appreciated.

回答1:

i know of an example using audio units that you could adapt, as the callbacks are very similiar, try here

回答2:

The Audio Queue Services Programming Guide should give you the details you need but obviously is a bit lax on the specific example you are looking for. You just need to push the in-memory audio data through the output queue instead of the PCM data from the file via AudioFileReadPackets.

I found a reasonable example of sound synthesis in the AudioQueue player callback in another stackoverflow question.

回答3:

SpeakHere Example may be the best example for you. The example records sound from device and play it. You can find this example in the Apple sample site.