Crate gstreamer_controller
source ·Expand description
§gstreamer-rs
![pipeline status](https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/badges/main/pipeline.svg)
GStreamer (App library) bindings for Rust. Documentation can be found here.
These bindings are providing a safe API that can be used to interface with GStreamer, e.g. for writing GStreamer-based applications and GStreamer plugins.
The bindings are mostly autogenerated with gir based on the GObject-Introspection API metadata provided by the GStreamer project.
§Table of Contents
§Installation
To build the GStreamer bindings or anything depending on them, you need to have at least GStreamer 1.14 and gst-plugins-base 1.14 installed. In addition, some of the examples/tutorials require various GStreamer plugins to be available, which can be found in gst-plugins-base, gst-plugins-good, gst-plugins-bad, gst-plugins-ugly and/or gst-libav.
§Linux/BSDs
You need to install the above mentioned packages with your distributions package manager, or build them from source.
On Debian/Ubuntu they can be installed with
$ apt-get install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev \
gstreamer1.0-plugins-base gstreamer1.0-plugins-good \
gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly \
gstreamer1.0-libav libgstrtspserver-1.0-dev libges-1.0-dev
The minimum required version of the above libraries is >= 1.14. If you
build the gstreamer-player sub-crate, or any of the examples that
depend on gstreamer-player, you must ensure that in addition to the above
packages, libgstreamer-plugins-bad1.0-dev
is installed. See the Cargo.toml
files for the full details,
$ apt-get install libgstreamer-plugins-bad1.0-dev
Package names on other distributions should be similar. Please submit a pull request with instructions for yours.
§macOS
You can install GStreamer and the plugins via Homebrew or by installing the binaries provided by the GStreamer project.
We recommend using the official GStreamer binaries over Homebrew, especially as GStreamer in Homebrew is currently broken.
§GStreamer Binaries
You need to download the two .pkg
files from the GStreamer website and
install them, e.g. gstreamer-1.0-1.20.4-universal.pkg
and
gstreamer-1.0-devel-1.20.4-universal.pkg
.
After installation, you also need to set the PATH
environment variable as
follows
$ export PATH="/Library/Frameworks/GStreamer.framework/Versions/1.0/bin${PATH:+:$PATH}"
Also note that the pkg-config
from GStreamer should be the first one in
the PATH
as other versions have all kinds of quirks that will cause
problems.
§Homebrew
Homebrew only installs various plugins if explicitly enabled, so some extra
--with-*
flags may be required.
$ brew install gstreamer gst-plugins-base gst-plugins-good \
gst-plugins-bad gst-plugins-ugly gst-libav gst-rtsp-server \
gst-editing-services --with-orc --with-libogg --with-opus \
--with-pango --with-theora --with-libvorbis --with-libvpx \
--enable-gtk3
Make sure the version of these libraries is >= 1.14.
§Windows
You can install GStreamer and the plugins via MSYS2
with pacman
or by installing the
binaries provided by
the GStreamer project.
We recommend using the official GStreamer binaries over MSYS2.
§GStreamer Binaries
You need to download the two .msi
files for your platform from the
GStreamer website and install them, e.g. gstreamer-1.0-x86_64-1.20.4.msi
and
gstreamer-1.0-devel-x86_64-1.20.4.msi
. Make sure to select the version that
matches your Rust toolchain, i.e. MinGW or MSVC.
After installation set the ``PATH` environment variable as follows:
# For a UNIX-style shell:
$ export PATH="c:/gstreamer/1.0/msvc_x86_64/bin${PATH:+:$PATH}"
# For cmd.exe:
$ set PATH=C:\gstreamer\1.0\msvc_x86_64\bin;%PATH%
Make sure to update the path to where you have actually installed GStreamer and for the corresponding toolchain.
Also note that the pkg-config.exe
from GStreamer should be the first one in
the PATH
as other versions have all kinds of quirks that will cause
problems.
§MSYS2 / pacman
$ pacman -S glib2-devel pkg-config \
mingw-w64-x86_64-gstreamer mingw-w64-x86_64-gst-plugins-base \
mingw-w64-x86_64-gst-plugins-good mingw-w64-x86_64-gst-plugins-bad \
mingw-w64-x86_64-gst-plugins-ugly mingw-w64-x86_64-gst-libav \
mingw-w64-x86_64-gst-rtsp-server
Make sure the version of these libraries is >= 1.14.
Note that the version of pkg-config
included in MSYS2
is
known to have problems
compiling GStreamer, so you may need to install another version. One option
would be pkg-config-lite
.
§Getting Started
The API reference can be found here, however it is only the Rust API reference and does not explain any of the concepts.
For getting started with GStreamer development, the best would be to follow the documentation on the GStreamer website, especially the Application Development Manual. While being C-centric, it explains all the fundamental concepts of GStreamer and the code examples should be relatively easily translatable to Rust. The API is basically the same, function/struct names are the same and everything is only more convenient (hopefully) and safer.
In addition there are tutorials on the GStreamer website. Many of them were ported to Rust already and the code can be found in the tutorials directory.
Some further examples for various aspects of GStreamer and how to use it from Rust can be found in the examples directory.
Various GStreamer plugins written in Rust can be found in the gst-plugins-rs repository.
§LICENSE
gstreamer-rs and all crates contained in here are licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
GStreamer itself is licensed under the Lesser General Public License version 2.1 or (at your option) any later version: https://www.gnu.org/licenses/lgpl-2.1.html
§Contribution
Any kinds of contributions are welcome as a pull request.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in gstreamer-rs by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
Re-exports§
pub use glib;
pub use gst;
pub use gstreamer_controller_sys as ffi;
Modules§
Structs§
- A value mapping object that attaches multiple control sources to a guint gobject properties representing a color. A control value of 0.0 will turn the color component off and a value of 1.0 will be the color level.
- A value mapping object that attaches control sources to gobject properties. It will map the control values directly to the target property range. If a non-absolute direct control binding is used, the value range [0.0 … 1.0] is mapped to full target property range, and all values outside the range will be clipped. An absolute control binding will not do any value transformations.
InterpolationControlSource
is agst::ControlSource
, that interpolates values between user-given control points. It supports several interpolation modes and property types.LFOControlSource
is agst::ControlSource
, that provides several periodic waveforms as control values.- A
gst::ControlBinding
that forwards requests to anothergst::ControlBinding
- Base class for
gst::ControlSource
that use time-stamped values. TriggerControlSource
is agst::ControlSource
, that returns values from user-given control points. It allows for a tolerance on the time-stamps.
Enums§
- The various interpolation modes available.
- The various waveform modes available.