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