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https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
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77bf0c945e
The element expects an array of "commands", as GstStructures, in the form: operation, pattern=<pattern>, ... The only operation implemented for now is replace-all, eg: replace-all, pattern=foo, replacement=bar Other operations can be implemented if useful in the future, eg. "match" could post a message to the bus when the pattern is encountered. The main use case for this is automatic speech recognition, as implemented by eg awstranscribe as users may want to replace swear words with tamer language. Commands are applied in order. The interface is usable through the CLI with the usual escaping strategies, though trying to pass in actual regular expressions through it is a bit tricky, as this introduces yet another level of escaping.
76 lines
2.3 KiB
Rust
76 lines
2.3 KiB
Rust
// Copyright (C) 2020 Mathieu Duponchelle <mathieu@centricular.com>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the
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// Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
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// Boston, MA 02110-1335, USA.
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use glib::prelude::*;
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fn init() {
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use std::sync::Once;
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static INIT: Once = Once::new();
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INIT.call_once(|| {
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gst::init().unwrap();
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gstrsregex::plugin_register_static().expect("regex test");
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});
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}
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#[test]
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fn test_replace_all() {
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init();
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let input = b"crap that mothertrapper";
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let expected_output = "trap that mothertrapper";
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let mut h = gst_check::Harness::new("regex");
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{
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let regex = h.get_element().expect("Could not create regex");
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let command = gst::Structure::new(
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"replace-all",
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&[("pattern", &"crap"), ("replacement", &"trap")],
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);
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let commands = gst::Array::from_owned(vec![command.to_send_value()]);
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regex.set_property("commands", &commands).unwrap();
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}
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h.set_src_caps_str("text/x-raw, format=utf8");
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let buf = {
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let mut buf = gst::Buffer::from_mut_slice(Vec::from(&input[..]));
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let buf_ref = buf.get_mut().unwrap();
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buf_ref.set_pts(gst::ClockTime::from_seconds(0));
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buf_ref.set_duration(gst::ClockTime::from_seconds(2));
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buf
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};
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assert_eq!(h.push(buf), Ok(gst::FlowSuccess::Ok));
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let buf = h.pull().expect("Couldn't pull buffer");
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assert_eq!(buf.get_pts(), 0.into());
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assert_eq!(buf.get_duration(), 2 * gst::SECOND);
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let map = buf.map_readable().expect("Couldn't map buffer readable");
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assert_eq!(
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std::str::from_utf8(map.as_ref()),
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std::str::from_utf8(expected_output.as_ref())
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);
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}
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