1301703 - Improve support for Opus file with a mapping family of 255

Status: RESOLVED DUPLICATE of bug 1301518

(Core :: Audio/Video: Playback, defect, P3)

Description

[Paul Adenot (:padenot)]

This bug is about the following:
- Make it so that files with arbitrary number of channels, but with a mapping family of 255 can be decoded successfully
- Prevent playing back those files, but allow routing them to Web Audio, for example
- Create a number of files with mapping family of 255, for testing purposes, and make sure they work with the Web Audio API.

Comment 1

[Paul Adenot (:padenot)]

> 17:49	rillian	padenot: dom/media/test/test-8-7.1.opus is an channels=8, family=1 test file we have in tree.

Comment 2

[hans]

I imagine supporting opus ambisonics (1340326) would be a related change. If it comes down to choosing how to prioritize between that change and this one, please focus on opus ambisonics, which more directly addresses what we're doing. Thanks!