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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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2
spa/plugins/audioconvert/audioconvert.c
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@ -1084,7 +1084,7 @@ static int impl_node_process(void *object)
if (SPA_UNLIKELY(i == 0))
res |= r & SPA_STATUS_NEED_DATA;
if (SPA_UNLIKELY(i == this->n_nodes-1))
res |= r & SPA_STATUS_HAVE_DATA;
res |= r & (SPA_STATUS_HAVE_DATA | SPA_STATUS_DRAINED);
}
if (res & SPA_STATUS_HAVE_DATA)
break;