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slightly clarify docu of read() wrt. underrun

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This commit is contained in:
Oswald Buddenhagen
2024-02-01 01:50:27 +01:00
committed by Lars Immisch
parent 16345a139a
commit 7d9c16618b
1 changed files with 6 additions and 3 deletions
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9
doc/libalsaaudio.rst
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@@ -324,9 +324,12 @@ PCM objects have the following methods:
``(0,'')`` if no new period has become available since the last
call to read.
In case of an overrun, this function will return a negative size: :const:`-EPIPE`.
This indicates that data was lost, even if the operation itself succeeded.
Try using a larger periodsize.
In case of a buffer overrun, this function will return the negative
size :const:`-EPIPE`, and no data is read.
This indicates that data was lost. To resume capturing, just call read
again, but note that the stream was already corrupted.
To avoid the problem in the future, try using a larger period size
and/or more periods, at the cost of higher latency.
.. method:: PCM.write(data)