[FFmpeg-devel] [PATCH] [RFC] channel_layout: add support for ambisonics

[Marton Balint]

On Thu, 29 Nov 2018, Rostislav Pehlivanov wrote:

> This is an RFC to add support for tagging channel layouts as ambisonics
> in a backward-compatible way.
> For now ambisonics up to third order are supported.
> The functions have been updated to support and propagate the
> AV_CH_LAYOUT_AMBISONICS flag.
> This is messy but does not require a new API for layouts. Perhaps the
> new proposed API might be a better solution, comments are welcome.
> ---
> doc/APIchanges             |  4 ++
> libavutil/channel_layout.c | 85 +++++++++++++++++++++-----------------
> libavutil/channel_layout.h | 19 ++++++++-
> libavutil/version.h        |  4 +-
> 4 files changed, 72 insertions(+), 40 deletions(-)

Using separate channel_layout bits for each (up to 16) ambisonic channel 
seems a lot cleaner.

Regards,
Marton