On Mon, 2019-10-28 at 17:12 +0100, Hyperion wrote:
> - Bluetooth packet size is not constant : BT traffic is splited in radio slots
> that have fixed time lengh : so for a given bandwidth : slots size vary
It's still not clear to me whether the bluetooth packets have constant
size within one A2DP stream or not. Pali wrote earlier:
For established connection, bluetooth packet size is fixed. SBC
packet size depends on SBC bitpool (and other) parameters. And
because pulseaudio does not support generating fragmented SBC
packets, it can only fill those SBC frames which fits into
bluetooth packet size.
That sounded like reducing the bitpool and therefore the SBC packet
size mid-stream wouldn't help, because the lower level bluetooth packet
size is constant for the duration of the stream. However, if the
bluetooth packet size dynamically reacts to changes in the SBC packet
sizes, then reducing the bitpool mid-stream is useful. Can someone
confirm which it is?
--
Tanu
https://www.patreon.com/tanuk
https://liberapay.com/tanuk
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