mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-03 09:01:54 -05:00
44 lines
1.3 KiB
Text
44 lines
1.3 KiB
Text
|
/** \page page_daemon PipeWire Daemon
|
||
|
|
|
||
|
|
|
||
|
|
\section sec_logging Logging
|
||
|
|
|
||
|
|
The `PIPEWIRE_DEBUG` environment variable can be used to enable
|
||
|
|
more debugging. The format is:
|
||
|
|
|
||
|
|
`<level>[<category>;...]`
|
||
|
|
|
||
|
|
- `<level>` specifies the log level:
|
||
|
|
+ `0`: no logging is enabled
|
||
|
|
+ `1`: Error logging is enabled
|
||
|
|
+ `2`: Warnings are enabled
|
||
|
|
+ `3`: Informational messages are enabled
|
||
|
|
+ `4`: Debug messages are enabled
|
||
|
|
+ `5`: Trace messages are enabled. These messages can be logged
|
||
|
|
from the realtime threads.
|
||
|
|
|
||
|
|
- `<category>`: Specifies a string category to enable. Many categories
|
||
|
|
can be separated by commas. Current categories are:
|
||
|
|
+ `connection`: to log connection messages
|
||
|
|
|
||
|
|
|
||
|
|
\subsection sec_errors Error reporting
|
||
|
|
|
||
|
|
Functions return either NULL with errno set or a negative int error
|
||
|
|
code when an error occurs. Error codes are used from the SPA plugin
|
||
|
|
library on which PipeWire is built.
|
||
|
|
|
||
|
|
Some functions might return asynchronously. The error code for such
|
||
|
|
functions is positive and SPA_RESULT_IS_ASYNC() will return true.
|
||
|
|
SPA_RESULT_ASYNC_SEQ() can be used to get the unique sequence number
|
||
|
|
associated with the async operation.
|
||
|
|
|
||
|
|
The object returning the async result code will have some way to
|
||
|
|
signal the completion of the async operation (with, for example, a
|
||
|
|
callback). The sequence number can be used to see which operation
|
||
|
|
completed.
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
*/
|