Hardware accelerated audio decoding?
Hardware accelerated audio decoding?
- Subject: Hardware accelerated audio decoding?
- From: Dan Christainsen <email@hidden>
- Date: Mon, 16 Dec 2002 16:06:27 +0100
Hi,
I was trying to figure out how to write a native mac output for a media
player, when I noticed flags in <CoreAudio/CoreAudioTypes.h> for input
formats other than uncompressed audio, namely kAudioFormatMPEG,
kAudioFormatMPEG4AAC and kAudioFormatAC3 among others. I couldn't find
any documentation on this, and I couldn't figure out whether these
flags would work for the default output unit.
Does it really support hardware decoding of AC-3? Or internal decoding
of formats like MP3 and AAC? I was able to find some pages on the Apple
site that stated that my iMac DV had "Stereo with enhanced AC-3 and
surround sound", but I could find nothing else on this topic. It is
such an impressive feature that I somehow find it hard to believe that
it actually works... But in case it really works, should one do
something particular to the audio stream prior to sending it to the
unit?
- Dan Christiansen
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.