spa: improve draining

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

View file

@ -844,7 +844,8 @@ static int impl_node_process(void *object)
outio->buffer_id = SPA_ID_INVALID;
}
if (SPA_UNLIKELY(inio->status != SPA_STATUS_HAVE_DATA))
return SPA_STATUS_NEED_DATA;
return outio->status = inio->status;
if (SPA_UNLIKELY(inio->buffer_id >= inport->n_buffers))
return inio->status = -EINVAL;