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Bug 942

Summary: ALSA driver skips over most frames while "swizzling" channels
Product: SDL Reporter: Jānis Rūcis <parasti+libsdl>
Component: audioAssignee: Ryan C. Gordon <icculus>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: HG 2.0   
Hardware: All   
OS: Linux   
Attachments: Patch against SDL 1.2.14

Description Jānis Rūcis 2010-02-05 17:32:48 UTC 
Created attachment 484 [details]
Patch against SDL 1.2.14

I tracked this down trying to find the cause for crackle in the rear speakers in Nexuiz (with a 6 channel configuration).  Looks like the same problem was described in [1].  Attached is a quick patch that seems to work for me; it simply assumes that the SDL nomenclature is confusing (i.e., says samples, means frames).

[1] http://article.gmane.org/gmane.comp.lib.sdl/44406
Comment 1 Jānis Rūcis 2010-02-11 11:11:31 UTC 
BTW, while the patch probably doesn't apply to 1.3, the report does.
Comment 2 Ryan C. Gordon 2010-02-12 09:14:53 UTC 
This patch is now svn revision #5550 for the 1.2 branch and #5551 for the 1.3 branch.

Thanks!

--ryan.