mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-12-02 08:21:01 +00:00
b062f63ec3
This new crate consists of two elements, jsongstenc and jsongstparse
Both these elements can deal with an ndjson based format, consisting
for now of two item types: "Buffer" and "Header"
eg:
{"Header":{"format":"foobar"}}
{"Buffer":{"pts":0,"duration":43,"data":{"foo":"bar"}}}
jsongstparse will interpret this by first sending caps
application/x-json, format=foobar, then a buffer containing
{"foo":"bar"}, timestamped as required.
Elements further downstream can then interpret the data further.
jsongstenc will simply perform the reverse operation.
104 lines
3.2 KiB
Rust
104 lines
3.2 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 gst::EventView;
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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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gstrsjson::plugin_register_static().expect("json test");
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});
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}
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#[test]
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fn test_enc() {
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init();
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let input = "{\"foo\":42}";
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let mut h = gst_check::Harness::new("jsongstenc");
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h.set_src_caps_str("application/x-json, format=test");
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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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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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Ok("{\"Header\":{\"format\":\"test\"}}\n"),
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);
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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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Ok("{\"Buffer\":{\"pts\":0,\"duration\":2000000000,\"data\":{\"foo\":42}}}\n")
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);
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}
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#[test]
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fn test_parse() {
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init();
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let input = [
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"{\"Header\":{\"format\":\"test\"}}\n",
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"{\"Buffer\":{\"pts\":0,\"duration\":2000000000,\"data\":{\"foo\":42}}}\n",
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];
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let mut h = gst_check::Harness::new("jsongstparse");
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h.set_src_caps_str("text/x-raw");
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for input in &input {
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let buf = gst::Buffer::from_mut_slice(Vec::from(&input[..]));
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assert_eq!(h.push(buf), Ok(gst::FlowSuccess::Ok));
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}
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while h.events_in_queue() > 0 {
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let ev = h.pull_event().unwrap();
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match ev.view() {
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EventView::Caps(ev) => {
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assert!(ev.get_caps().is_strictly_equal(&gst::Caps::new_simple(
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&"application/x-json",
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&[(&"format", &"test")]
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)));
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}
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_ => (),
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}
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}
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let buf = h.pull().expect("Couldn't pull buffer");
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let map = buf.map_readable().expect("Couldn't map buffer readable");
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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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assert_eq!(std::str::from_utf8(map.as_ref()), Ok("{\"foo\":42}"));
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}
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