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audio: remove unreferenced af_lavrresample

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This filter wasn't referenced anywhere and thus was dead code. It should
have been in the audio filter list in user_filters.c. This was intended
as compatibility wrapper (to avoid breaking old command lines and config
files), and has no real use. Apparently I forgot to add it to the filter
list (did I even test this shit?), and so it was rotting around for 1.5
years doing nothing (just like myself).

Note that users can just use the libavfilter provided filter to force
resampling, just that it has a different name and different options.
There's also af_format to force inserting auto conversion through the
internal f_swsresample filter.
This commit is contained in:
wm4
2019-06-30 01:10:44 +02:00
parent c6773692ad
commit c8b8fe9981
3 changed files with 0 additions and 151 deletions
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38
DOCS/man/af.rst
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@@ -24,44 +24,6 @@ See ``--vf`` group of options for info on how ``--af-defaults``, ``--af-add``,
Available filters are:
``lavrresample[=option1:option2:...]``
This filter uses libavresample (or libswresample, depending on the build)
to change sample rate, sample format, or channel layout of the audio stream.
This filter is automatically enabled if the audio output does not support
the audio configuration of the file being played.
.. warning::
Deprecated. Either use the ``--audio-resample-...`` options to customize
resampling, or the libavfilter ``--af=aresample`` filter, which has its
own options.
It supports only the following sample formats: u8, s16, s32, float.
``filter-size=<length>``
Length of the filter with respect to the lower sampling rate. (default:
16)
``phase-shift=<count>``
Log2 of the number of polyphase entries. (..., 10->1024, 11->2048,
12->4096, ...) (default: 10->1024)
``cutoff=<cutoff>``
Cutoff frequency (0.0-1.0), default set depending upon filter length.
``linear``
If set then filters will be linearly interpolated between polyphase
entries. (default: no)
``no-detach``
Do not detach if input and output audio format/rate/channels match.
(If you just want to set defaults for this filter that will be used
even by automatically inserted lavrresample instances, you should
prefer setting them with the ``--audio-resample-...`` options.) This
does not do anything anymore and the filter will never detach.
``normalize=<yes|no|auto>``
Whether to normalize when remixing channel layouts (default: auto).
``auto`` uses the value set by ``--audio-normalize-downmix``.
``o=<string>``
Set AVOptions on the SwrContext or AVAudioResampleContext. These should
be documented by FFmpeg or Libav.
``lavcac3enc[=options]``
Encode multi-channel audio to AC-3 at runtime using libavcodec. Supports
16-bit native-endian input format, maximum 6 channels. The output is