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https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
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15e7a63e7b
The goal is to be able to get back the original buffer after performing analysis on a transformed version. Then put the various GstMeta back on the original buffer. An example pipeline would be .. ! originalbuffersave ! videoscale ! analysis ! originalbufferestore ! draw_overlay ! sink Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1428>
42 lines
1.5 KiB
Rust
42 lines
1.5 KiB
Rust
// Copyright (C) 2024 Collabora Ltd
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// @author: Olivier Crête <olivier.crete@collabora.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License, v2.0.
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// If a copy of the MPL was not distributed with this file, You can obtain one at
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// <https://mozilla.org/MPL/2.0/>.
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//
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// SPDX-License-Identifier: MPL-2.0
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/**
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* SECTION:element-originalbuffersave
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*
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* GStreamer elements to store the original buffer and restore it later
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*
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* In many analysis scenario (for example machine learning), it is desirable to
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* use a pre-processed buffer, for example by lowering the resolution, but we may
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* want to take the output of this analysis, and apply it to the original buffer.
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*
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* These elements do just this, the typical usage would be a pipeline like:
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*
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* `... ! originalbuffersave ! videoconvertscale ! video/x-raw, width=100, height=100 ! analysiselement ! originalbufferrestore ! ...`
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*
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* The originalbufferrestore element will "restore" the buffer that was entered to the "save" element, but will keep any metadata that was added later.
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*/
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use gst::glib;
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use gst::prelude::*;
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mod imp;
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glib::wrapper! {
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pub struct OriginalBufferSave(ObjectSubclass<imp::OriginalBufferSave>) @extends gst::Element, gst::Object;
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}
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pub fn register(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
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gst::Element::register(
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Some(plugin),
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"originalbuffersave",
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gst::Rank::NONE,
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OriginalBufferSave::static_type(),
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)
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}
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