[FFmpeg-devel] [PATCH] Add a new channel layout API

[Paul B Mahol]

On 12/30/18, Nicolas George <george at nsup.org> wrote:
> Paul B Mahol (2018-12-30):
>> On 12/26/18, Nicolas George <george at nsup.org> wrote:
>> >> + * The input string can be represented by:
>> >> + *  - the formal channel layout name (returned by
>> >> av_channel_layout_describe())
>> >> + *  - single or multiple channel names (returned by av_channel_name()
>> >> + *    or concatenated with "|")
>> >> + *  - a hexadecimal value of a channel layout (eg. "0x4")
>> >> + *  - the number of channels with default layout (eg. "5")
>> >> + *  - the number of unordered channels (eg. "4 channels")
>> >
>> > av_get_channel_layout() used to use '+' instead of '|', and I think it
>> > is better. For once, '+' is not a special character for shells.
>>
>> Can not work if user wants to define custom channel layout from
>> already available channels.
>
> Please explain why.

Input #0, wv, from
'/home/computer/Downloads/Run_The_Race_-_3rd_Order_Ambisonic_SN3D.wv':
  Duration: 00:11:07.67, start: 0.000000, bitrate: 6084 kb/s
    Stream #0:0: Audio: wavpack, 44100 Hz, 16 channels
(FL+FR+FC+LFE+BL+BR+FLC+FRC+BC+SL+SR+TC+TFL+TFC+TFR+TBL), s16p