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avdevice/timefilter: remove obsolete comments from the docs

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Also rename the parameters of the function to match with the implementation.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2021-02-06 11:16:57 +01:00
parent 84094f017e
commit 529bf5daf2
1 changed files with 1 additions and 14 deletions
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15
libavdevice/timefilter.h
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@ -39,16 +39,6 @@ typedef struct TimeFilter TimeFilter;
/** /**
* Create a new Delay Locked Loop time filter * Create a new Delay Locked Loop time filter
* *
* feedback2_factor and feedback3_factor are the factors used for the
* multiplications that are respectively performed in the second and third
* feedback paths of the loop.
*
* Unless you know what you are doing, you should set these as follow:
*
* o = 2 * M_PI * bandwidth * period_in_seconds
* feedback2_factor = sqrt(2) * o
* feedback3_factor = o * o
*
* Where bandwidth is up to you to choose. Smaller values will filter out more * Where bandwidth is up to you to choose. Smaller values will filter out more
* of the jitter, but also take a longer time for the loop to settle. A good * of the jitter, but also take a longer time for the loop to settle. A good
* starting point is something between 0.3 and 3 Hz. * starting point is something between 0.3 and 3 Hz.
@ -59,11 +49,8 @@ typedef struct TimeFilter TimeFilter;
* @param brandwidth filtering bandwidth, in Hz * @param brandwidth filtering bandwidth, in Hz
* *
* @return a pointer to a TimeFilter struct, or NULL on error * @return a pointer to a TimeFilter struct, or NULL on error
*
* For more details about these parameters and background concepts please see:
* http://www.kokkinizita.net/papers/usingdll.pdf
*/ */
TimeFilter * ff_timefilter_new(double clock_period, double feedback2_factor, double feedback3_factor); TimeFilter * ff_timefilter_new(double time_base, double period, double bandwidth);
/** /**
* Update the filter * Update the filter