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Bug 248 - Request for 7.1 audio support
Summary: Request for 7.1 audio support
Status: ASSIGNED
Alias: None
Product: SDL
Classification: Unclassified
Component: audio (show other bugs)
Version: 2.0.0
Hardware: x86 All
: P1 major
Assignee: Ryan C. Gordon
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2006-06-11 04:38 UTC by Forest Hale
Modified: 2013-05-21 23:47 UTC (History)
0 users

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Description Forest Hale 2006-06-11 04:38:49 UTC 
SDL has 5.1 audio support and I am requesting that 7.1 support be added, this should be very easy to do.

The full channel layout would be:
Front, Surround (aka Rear), Center/LFE, Side.  (see also bug #247 however)
Comment 1 Ryan C. Gordon 2009-12-15 22:37:34 UTC 
Changing bug priorities...

--ryan.
Comment 2 Sam Lantinga 2013-05-21 00:48:00 UTC 
Ryan, can you take a look and see what's left for 2.0 release?
Comment 3 Ryan C. Gordon 2013-05-21 21:44:30 UTC 
As far as I know, 7.1 is supported now.

A brief check suggests these drivers are good to go:

- pulseaudio
- directsound
- xaudio2
- coreaudio

...which covers Linux, Windows, and Mac OS X.

These are problems, and might be important as fallbacks:
- winmm explicitly clamps to stereo (probably a limitation of the API).
- ALSA doesn't set up a channel swizzle for 7.1, and has a FIXME (see swizzle_alsa_channels() in src/audio/alsa/SDL_alsa_audio.c)

...other systems I didn't check (because who has a 7.1 setup on Android, or BeOS, or SunOS?).

--ryan.
Comment 4 Sam Lantinga 2013-05-21 23:47:57 UTC 
Okay, I think once we have ALSA channel swizzling in, we're good to go.