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Issue 11019010: replace snd_pcm_hw_params_set_* with snd_pcm_set_params. (Closed)

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5 years ago by no longer working on chromium
5 years ago


It seems that snd_pcm_hw_params_set_* API does not work well any more in the latest ubuntu like 12.04. My tests show that it will freeze the pulseaudio for a while and get into underrun state. And it seems snd_pcm_set_params works better for the same purpose. This patch also fixes the choppy audio issue for webrtc in ubuntu 12.04. BUG=152232, 153505 TEST=use pepper flash (./out/Debug/chrome -ppapi-flash-path=/your/path/ open link in two tabs, audio should be good. uses to make a loopback call and verify the audio is good on ubuntu 12.04 Committed:

Patch Set 1 #

Total comments: 2

Patch Set 2 : used the passed variable #

Unified diffs Side-by-side diffs Delta from patch set Stats (+7 lines, -66 lines) Patch
M media/audio/linux/ View 1 1 chunk +7 lines, -66 lines 0 comments Download
Commit queue not available (can’t edit this change).


Total messages: 9 (0 generated)
lgtm, but this is mostly a rubber stamp. Local testing shows this fixes the fast-forward ...
5 years ago (2012-10-01 18:59:15 UTC) #1
no longer working on chromium
I will update the code and description before land it. thanks. File media/audio/linux/ (right): ...
5 years ago (2012-10-01 19:51:13 UTC) #2
scherkus (not reviewing)
OOC have you reached you to pulseaudio community to see if there's a possible regression ...
5 years ago (2012-10-01 19:52:59 UTC) #3
no longer working on chromium
On 2012/10/01 19:52:59, scherkus wrote: > OOC have you reached you to pulseaudio community to ...
5 years ago (2012-10-02 10:09:47 UTC) #4
no longer working on chromium
Given we constantly get audio issue with pulseaudio, it makes me believe that it is ...
5 years ago (2012-10-02 10:18:02 UTC) #5
commit-bot: I haz the power
CQ is trying da patch. Follow status at
5 years ago (2012-10-02 10:18:16 UTC) #6
commit-bot: I haz the power
Change committed as 159680
5 years ago (2012-10-02 12:12:41 UTC) #7
scherkus (not reviewing)
I agree :) Know anyone who is available? On Oct 2, 2012 3:18 AM, <> ...
5 years ago (2012-10-02 13:18:22 UTC) #8
no longer working on chromium
5 years ago (2012-10-03 09:10:24 UTC) #9
On Tue, Oct 2, 2012 at 3:18 PM, Andrew Scherkus <>wrote:

> I agree :)
> Know anyone who is available?
I have already spent some of my spare time on putting the code together,
and have CLs which work with basic functionalities like recording and
playing sound.
But they only work on my lucid, but not gprecise (recording is choppy

My plan is to start with the input side, since I have more control here. If
it works well, then we can extend it to the output.

But honestly this won't be ready for review within a few weeks, since I
need to finish some UI and media stream work first.
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