On 12/13/2021 8:36 PM, Nicolas George wrote:
James Almer (12021-12-13):
To achieve this you don't need the same AVChannel value to appear several
times in the same layout. You have INT_MAX values available, so just assign
one to each of these you mentioned. No need for an abstract value "user
defined" that would then show up several times in a layout. Oboe can be 65,
piano can be 66.
Also, each channel is meant to map to a speaker in a different physical
location. If your idea is to have oboe and piano play through the same
The idea is that if some filters takes the oboe and piano from a single
stream and extracts them into two streams, then the left and right will
automatically be correctly marked left and right in the extracted
streams.
Can't user defined names let you do that without the need to reuse the
same AVChannel value in a given layout? And for that matter, can you not
set said names within the filter itself and not in the layout?
speaker, then you're thinking filtering, and that sounds beyond the scope of
a channel layout API.
Making sure existing filters and devices can flag the channel layout
they need, which they could not because of the limitation of the current
API, seems 100% in scope to me.
What is your definition of the scope of a channel layout API? I hope it
is not "we did it that way, anything it cannot do is beyond the scope".
Mapping a channel (each of the data pointers in a frame) to an specific
output, like a speaker.
Regards,
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