1073786 - [meta] Multiple channel support for Cubeb

Status: NEW

(Core :: Audio/Video: cubeb, enhancement, P3)

Description

[Sebastian_Fisahn]

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0
Build ID: 20140926185533

Steps to reproduce:

see details here: https://support.mozilla.org/en-US/questions/1020526?esab=a&s=&r=0&as=s


Actual results:

see details: https://support.mozilla.org/en-US/questions/1020526?esab=a&s=&r=0&as=s


Expected results:

see details: https://support.mozilla.org/en-US/questions/1020526?esab=a&s=&r=0&as=s

Comment 1

[Greg Ogonowski]

Currently Firefox is now the only major browser not supporting multichannel AAC audio.
Maybe we can get past this problem soon.
We provide high performance high quality streaming audio encoders to many of the largest content providers. We have test HLS streams available upon request. The surround streams unfortunately, play in 2 channels using Firefox. We need multichannel AAC decoding! This would be easy to do now that Firefox is MSE compatible.
Our test multichannel AAC HLS streams currently play using Microsoft Edge, IE for Win 8/10, Safari Mac OS X and iOS, and Google Chrome. It sure would be good to add Firefox to this list.
Please let me know if we can be of assistance to make this happen.
Here are test resources:
https://www2.iis.fraunhofer.de/AAC/
https://www.indexcom.com/products/encoder/

Comment 2

[C.M.Chang[:chunmin]]

As per irc conversation with :kinetik, it's better to start from cubeb[0] 
1. [cubeb] Support 5.1 on one backend(OS X, Linux, Windows, Android) and write tests for it
2. [cubeb] Make it work on other platforms
3. [gecko] Integrate it on Gecko side in AudioStream up to AudioConverter

[0] https://github.com/kinetiknz/cubeb

Comment 3

[Maire Reavy [:mreavy]]

@cchang -- I'd like to make this bug into a meta bug for adding 5.1 support to cubeb.  Can you spin off bugs for each platform?  I'd love if we could do Windows first because it will have the greatest impact, but I realize it may be faster/easier to do one of the other platforms first.  Do you know if there is a meta bug for 5.1 support in Core:Audio/Video:Playback?  Thanks!

Comment 4

[C.M.Chang[:chunmin]]

(In reply to Maire Reavy [:mreavy] from comment #3)
> @cchang -- I'd like to make this bug into a meta bug for adding 5.1 support
> to cubeb.  Can you spin off bugs for each platform?  
OK, I will open new bugs for each platform.
> I'd love if we could do Windows first because it will have the greatest impact, 
> but I realize it may be faster/easier to do one of the other platforms first.
I don't have window in hand. I'd like to do that if I can get one.
> Do you know if there is a meta bug for 5.1 support in Core:Audio/Video:Playback?  Thanks!
I don't find it on bugzilla. Maybe we should open one for it. Bug 706327 is also a meta for Core:Audio/Video:cubeb to support multiple channels. Do we need to set dependency between these two bugs?

Comment 5

[Maire Reavy [:mreavy]]

(In reply to Chun-Min Chang[:chunmin] from comment #4)
> (In reply to Maire Reavy [:mreavy] from comment #3)
> > Do you know if there is a meta bug for 5.1 support in Core:Audio/Video:Playback?  Thanks!
> I don't find it on bugzilla. Maybe we should open one for it. Bug 706327 is
> also a meta for Core:Audio/Video:cubeb to support multiple channels. Do we
> need to set dependency between these two bugs?

Actually, I'm going to close Bug 706327 as a dup of this bug.  Can you open a new meta bug in Playback for 5.1 support and make it dependent on this bug?  Thanks so much for working on this!

Comment 7

[C.M.Chang[:chunmin]]

(In reply to Maire Reavy [:mreavy] from comment #5)
> Actually, I'm going to close Bug 706327 as a dup of this bug.  Can you open
> a new meta bug in Playback for 5.1 support and make it dependent on this
> bug?  Thanks so much for working on this!
Done. Thanks for your guide :)

Comment 8

[C.M.Chang[:chunmin]]

I open a wiki page to track the status
https://wiki.mozilla.org/Media/multichannel

Comment 9

[Bulk Bug Changes for mreavy's org]

Mass change P2->P3 to align with new Mozilla triage process.

Comment 10

[Paul Adenot (:padenot)]

This is done isn't it?

Comment 11

[Alex Chronopoulos [:achronop]]

The remaining parts are;

• Bug 1325023 if it still stands. :chunmin should know about it (NI)
• Multichannel in android. If we want it there we haven't done anything.

Comment 12

[C.M.Chang[:chunmin]]

We have implemented multi-channel in Windows, Mac OS, and PulseAudio, but we don't support other platforms like Android and ALSA. I've asked the reporter of bug 1368938 to check the layout issue again. Bug 1325023 should close if bug 1368938 is solved.

Comment 13

[C.M.Chang[:chunmin]]

I find the same questions for audio channel layout setting come times and times again and reporters usually don't know how to check those settings. To avoid answering the same questions again and again, I wrote a FAQ post to address some common issues. I hope we can paste that post to answer the reporter's issues directly in the future.

I am not sure where I can post the official FAQ page, so I just post it on my blog for now. Here is the link: https://chunminchang.github.io/blog/post/firefox-faq-audio-channel-layout

That post include some common issues:

• how to set up and check the audio channel layout
• how to file a bug with info that helps us to address the reporter's issues

The FAQ is mainly for Mac OS now. I'll add the Windows and Linux parts in the future.