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impl-port: also honour CAN_ALLOC flag between mixer/node

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When we have a mixer node and we need to negotiate buffers between the
mixer and the node, take the CAN_ALLOC flag into account.

This is for input ports, which can have a mixer. If you make a filter
with a CAN_ALLOC input port, it will now not already contain buffer
data.

See #4918
This commit is contained in:
Wim Taymans 2025-10-02 16:13:32 +02:00
parent 1fdde582c0
commit 4161fa3071
1 changed files with 4 additions and 0 deletions
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4
src/pipewire/impl-port.c
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@ -1960,6 +1960,10 @@ static int negotiate_mixer_buffers(struct pw_impl_port *port, uint32_t flags,
alloc_flags |= PW_BUFFERS_FLAG_DYNAMIC;
if (SPA_FLAG_IS_SET(node->spa_flags, SPA_NODE_FLAG_ASYNC))
alloc_flags |= PW_BUFFERS_FLAG_ASYNC;
if (SPA_FLAG_IS_SET(port->spa_flags, SPA_PORT_FLAG_CAN_ALLOC_BUFFERS)) {
alloc_flags |= PW_BUFFERS_FLAG_NO_MEM;
flags |= SPA_NODE_BUFFERS_FLAG_ALLOC;
}
pw_log_debug("%p: %d.%d negotiate %d buffers on node: %p flags:%08x",
port, port->direction, port->port_id, n_buffers, node->node,