Efficiently play two buffers with AVAudioEngine?
Efficiently play two buffers with AVAudioEngine?
- Subject: Efficiently play two buffers with AVAudioEngine?
- From: Charles Constant <email@hidden>
- Date: Tue, 28 Jul 2015 23:39:18 -0700
Hi gang,
I'm using the AVAudioEngine player in a project where I need to play a stereo buffer. I want the option to store my left and right buffers as two separate buffers of Doubles.
Currently I'm handling playback by using a function from the Accelerate framework to convert and copy the Doubles to the player's
AVAudioPCMBuffer... which is where I would love some sage advice from you! Two problems with the approach I'm using:
1) at the moment I have to write data to .floatChannelData by arranging samples like so: [ L0 L1 L2 L3 ... R0 R1 R2 ... ] It would be more flexible if I could send the buffers separately. Is using an AVAudioEngine mixer the *only* way do this?
2) (less important) it would be nice if I could send Doubles without converting to Float32 but I get the impression that's not supported? I'm not sure I'm sticking with Doubles anyways so it's not a huge issue (I have code for both)
The best case scenario would let me keep the buffers up to date, and when it comes time to play them, just assign two pointers for the buffers. That would be pretty peachy. Anyone know if it's possible?
Thanks!
Charles
PS: I'm hoping I haven't triple-posted this email. I keep getting messages from the admin group that it was rejected. If so, apologies for that too!
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