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mention the sound card clock and system clock difference in libpulse docs

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This commit is contained in:
Tanu Kaskinen 2017-10-19 21:22:15 +03:00
parent 7a7072557a
commit 50918e908b
2 changed files with 19 additions and 8 deletions
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8
src/pulse/stream.h
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@ -706,7 +706,9 @@ pa_operation* pa_stream_set_name(pa_stream *s, const char *name, pa_stream_succe
/** Return the current playback/recording time. This is based on the
* data in the timing info structure returned by
* pa_stream_get_timing_info().
* pa_stream_get_timing_info(). The returned time is in the sound card
* clock domain, which usually runs at a slightly different rate than
* the system clock.
*
* This function will usually only return new data if a timing info
* update has been received. Only if timing interpolation has been
@ -738,7 +740,9 @@ pa_operation* pa_stream_set_name(pa_stream *s, const char *name, pa_stream_succe
int pa_stream_get_time(pa_stream *s, pa_usec_t *r_usec);
/** Determine the total stream latency. This function is based on
* pa_stream_get_time().
* pa_stream_get_time(). The returned time is in the sound card clock
* domain, which usually runs at a slightly different rate than the
* system clock.
*
* The latency is stored in \a *r_usec. In case the stream is a
* monitoring stream the result can be negative, i.e. the captured