It attempts to produce a (nearly) gapless live stream by synchronizing
its output to the running time and forwarding the next input buffer if
its start is (nearly) flush with the end of the last output buffer.
If the input buffer is missing or too far in the future, it duplicates
the last output buffer with adjusted timestamps. If it is operating on a
raw audio stream, it will fill duplicate buffers with silence.
If an input buffer arrives too late, it is thrown away. If the last
input buffer was accepted too long ago (according to `late-threshold`),
a late input buffer is accepted anyway, but immediately considered a
duplicate. Due to the silence-filling, this has no effect on audio, but
video gets a "slideshow" effect instead of freezing completely.
The "many-repeats" property will be notified when this element has
recently duplicated a lot of buffers or recovered from such a state.
Co-authored-by: Vivia Nikolaidou <vivia@ahiru.eu>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/708>
This change also puts the `target/` directory first, for locally-built
plugins to take priority over distribution-provided plugins. It also
encloses the environment variable in quotes, in case it contains paths with
spaces.
cargo-c will produce a pkg-config file making it easier to statically
link plugins.
Also add 'static' features for plugins depending on < 1.14 as this is the
minimal required version to use static linking because of ABI changes in
core.
The audiornnoise element can be used as playbin audio-filter for instance, to
suppress noise in the audio stream.
This plugin relies on the nnnoiseless crate which implements the noise removal
algorithm of the Xiph RNNoise library, in Rust. Some demos and documentation of
the RNNoise C library can be found on:
https://people.xiph.org/~jm/demo/rnnoise/Fixes#114
