Bug 115829

Summary:	MainActor doesn't work (OSS emulation problem)
Product:	[openSUSE] SUSE LINUX 10.0	Reporter:	Takashi Iwai <tiwai>
Component:	Sound	Assignee:	Takashi Iwai <tiwai>
Status:	RESOLVED FIXED	QA Contact:	E-mail List <qa-bugs>
Severity:	Normal
Priority:	P5 - None
Version:	RC 1
Target Milestone:	---
Hardware:	Other
OS:	All
Whiteboard:
Found By:	Other	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Takashi Iwai 2005-09-08 11:20:10 UTC

MainActor produces no sound at all.

The problem is that oss GETOPTR ioctl returns unexpected values.
It seems that blocks field is wrong.
For example, when the stream is prepared but nothing written, blocks should
return 0.  In the current code, it's not:
info.blocks = (runtime->oss.buffer_bytes - delay - fixup) /
runtime->oss.period_bytes;

Comment 1 Takashi Iwai 2005-09-08 11:29:27 UTC

It should be like:

   info.blocks = (runtime->oss.bytes - delay - fixup) / runtime->oss.period_bytes;

Comment 2 Takashi Iwai 2005-09-08 11:34:32 UTC

ah, no, obviously wrong again.

Comment 3 Takashi Iwai 2005-09-08 11:43:31 UTC

Looks like we need a workaround for this with a new flag.
Some apps assume that blocks means the empty blocks and some apps the filled blocks.
Looking at oss/audio.c and oss/dmabuf.c, the latter seems major.

Comment 4 Takashi Iwai 2005-09-08 19:00:39 UTC

Fixed on rc2.  The behavior of 9.3 is back when buggy-ptr option is set to pcm
proc file.