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spa: improve draining

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Make a new DRAINED status.
Place the DRAINED status on an input IO when a stream is out of
buffers and draining.
All nodes that don't have HAVE_DATA on the input io need to copy
it to the output io and return the status. This makes sure the
DRAINED is forwarded and nodes return DRAINED from _process()
DRAINED on the resampler flushes out the last queued samples and then
forwards the DRAINED in the next iteration.
Emit a new drained signal from the context when a node returns
DRAINED. Use this to trigger the drained signal in the stream.
This commit is contained in:
Wim Taymans 2020-04-07 17:58:43 +02:00
parent 029f431418
commit b18dacde9a
10 changed files with 46 additions and 42 deletions
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3
src/pipewire/private.h
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@ -235,6 +235,7 @@ pw_core_resource_errorf(struct pw_resource *resource, uint32_t id, int seq,
#define pw_context_driver_emit_xrun(c,n) pw_context_driver_emit(c, xrun, 0, n)
#define pw_context_driver_emit_incomplete(c,n) pw_context_driver_emit(c, incomplete, 0, n)
#define pw_context_driver_emit_timeout(c,n) pw_context_driver_emit(c, timeout, 0, n)
#define pw_context_driver_emit_drained(c,n) pw_context_driver_emit(c, drained, 0, n)
struct pw_context_driver_events {
#define PW_VERSION_CONTEXT_DRIVER_EVENTS 0
@ -248,6 +249,8 @@ struct pw_context_driver_events {
void (*incomplete) (void *data, struct pw_impl_node *node);
/** The driver got a sync timeout */
void (*timeout) (void *data, struct pw_impl_node *node);
/** a node drained */
void (*drained) (void *data, struct pw_impl_node *node);
};
#define pw_registry_resource(r,m,v,...) pw_resource_call(r, struct pw_registry_events,m,v,##__VA_ARGS__)