# The graph's clock, floored where the audio sender needs it.
#
# Inside a virtual machine, pipewire.conf raises the graph's minimum quantum to
# 1024 frames (21.3 ms), because a VM's timers jitter and small quanta then
# underrun on real audio hardware. A box is a VM, so that rule applies, and it
# silently overrides neswire's request for its 5 ms packet size. Every sample
# then waits for a 21 ms cycle before it can be encoded.
#
# The floor comes down to 256 frames (5.3 ms), the smallest power of two that
# holds one of neswire's packets. It is not lower than that on purpose: nothing
# here needs less, and the reason for the rule, a VM's timer driving the graph,
# still holds, because the Dummy-Driver is exactly that.
#
# A drop-in appends to a rules array, and every matching rule applies in order,
# so this one runs after the shipped one and wins.
context.properties.rules = [
    {   matches = [ { cpu.vm.name = !null } ]
        actions = {
            update-props = {
                default.clock.min-quantum = 256
            }
        }
    }
]