forked from mirrors/gstreamer-rs
gstreamer-tag: Introduce gstreamer-tag
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/merge_requests/1330>
This commit is contained in:
Marc Wiblishauser
Sebastian Dröge
parent
bd4122e334
commit
130dc49b22
6 changed files with 312 additions and 8 deletions
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@ -37,6 +37,7 @@ default-members = [
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"gstreamer-rtsp",
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"gstreamer-rtsp-server",
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"gstreamer-sdp",
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"gstreamer-tag",
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"gstreamer-validate",
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"gstreamer-video",
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"gstreamer-webrtc",
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@ -89,6 +90,7 @@ members = [
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"gstreamer-rtsp",
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"gstreamer-rtsp-server",
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"gstreamer-sdp",
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"gstreamer-tag",
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"gstreamer-validate",
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"gstreamer-video",
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"gstreamer-webrtc",
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36
gstreamer-tag/Cargo.toml
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36
gstreamer-tag/Cargo.toml
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@ -0,0 +1,36 @@
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[package]
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name = "gstreamer-tag"
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version = "0.22.0"
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authors = [
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"Sebastian Dröge <sebastian@centricular.com>",
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"Marc Wiblishauser <marcbull@mwcloud.eu>",
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]
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categories = ["api-bindings", "multimedia"]
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description = "Rust bindings for GStreamer Tag Support library"
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repository = "https://gitlab.freedesktop.org/gstreamer/gstreamer-rs"
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license = "MIT OR Apache-2.0"
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readme = "README.md"
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homepage = "https://gstreamer.freedesktop.org"
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documentation = "https://gstreamer.pages.freedesktop.org/gstreamer-rs/stable/latest/docs/gstreamer_tag/"
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keywords = ["gstreamer", "multimedia", "audio", "tag", "tags", "gnome"]
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edition = "2021"
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rust-version = "1.70"
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[dependencies]
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libc = "0.2"
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ffi = { package = "gstreamer-tag-sys", path = "sys" }
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glib = { git = "https://github.com/gtk-rs/gtk-rs-core" }
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gst = { package = "gstreamer", path = "../gstreamer" }
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[features]
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default = []
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v1_16 = ["gst/v1_16", "ffi/v1_16"]
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v1_18 = ["gst/v1_18", "ffi/v1_18", "v1_16"]
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v1_20 = ["gst/v1_20", "ffi/v1_20", "v1_18"]
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v1_22 = ["gst/v1_22", "ffi/v1_22", "v1_20"]
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v1_24 = ["gst/v1_24", "ffi/v1_24", "v1_22"]
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[package.metadata.docs.rs]
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all-features = true
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rustc-args = ["--cfg", "docsrs"]
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rustdoc-args = ["--cfg", "docsrs", "--generate-link-to-definition"]
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214
gstreamer-tag/README.md
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214
gstreamer-tag/README.md
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@ -0,0 +1,214 @@
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# gstreamer-tag-rs [](https://crates.io/crates/gstreamer-tag) [](https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/commits/main)
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[GStreamer](https://gstreamer.freedesktop.org/) (Tag support library) bindings for Rust.
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Documentation can be found [here](https://gstreamer.pages.freedesktop.org/gstreamer-rs/stable/latest/docs/gstreamer_tag/).
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These bindings are providing a safe API that can be used to interface with
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GStreamer, e.g. for writing GStreamer-based applications and GStreamer plugins.
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The bindings are mostly autogenerated with [gir](https://github.com/gtk-rs/gir/)
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based on the [GObject-Introspection](https://wiki.gnome.org/Projects/GObjectIntrospection/)
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API metadata provided by the GStreamer project.
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## Table of Contents
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1. [Installation](#installation)
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1. [Linux/BSDs](#installation-linux)
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1. [macOS](#installation-macos)
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1. [Windows](#installation-windows)
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1. [Getting Started](#getting-started)
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1. [License](#license)
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1. [Contribution](#contribution)
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<a name="installation"/>
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## Installation
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To build the GStreamer bindings or anything depending on them, you need to
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have at least GStreamer 1.14 and gst-plugins-base 1.14 installed. In addition,
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some of the examples/tutorials require various GStreamer plugins to be
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available, which can be found in gst-plugins-base, gst-plugins-good,
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gst-plugins-bad, gst-plugins-ugly and/or gst-libav.
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<a name="installation-linux"/>
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### Linux/BSDs
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You need to install the above mentioned packages with your distributions
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package manager, or build them from source.
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On Debian/Ubuntu they can be installed with
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```console
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$ apt-get install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev \
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gstreamer1.0-plugins-base gstreamer1.0-plugins-good \
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gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly \
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gstreamer1.0-libav libgstrtspserver-1.0-dev libges-1.0-dev
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```
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The minimum required version of the above libraries is >= 1.14. If you
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build the gstreamer-player sub-crate, or any of the examples that
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depend on gstreamer-player, you must ensure that in addition to the above
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packages, `libgstreamer-plugins-bad1.0-dev` is installed. See the `Cargo.toml`
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files for the full details,
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```console
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$ apt-get install libgstreamer-plugins-bad1.0-dev
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```
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Package names on other distributions should be similar.
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Please submit a pull request with instructions for yours.
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<a name="installation-macos"/>
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### macOS
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You can install GStreamer and the plugins via [Homebrew](https://brew.sh/) or
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by installing the [binaries](https://gstreamer.freedesktop.org/data/pkg/osx/)
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provided by the GStreamer project.
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We recommend using the official GStreamer binaries over Homebrew, especially
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as GStreamer in Homebrew is [currently broken](https://github.com/orgs/Homebrew/discussions/3740#discussioncomment-3804964).
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#### GStreamer Binaries
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You need to download the *two* `.pkg` files from the GStreamer website and
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install them, e.g. `gstreamer-1.0-1.20.4-universal.pkg` and
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`gstreamer-1.0-devel-1.20.4-universal.pkg`.
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After installation, you also need to set the `PATH` environment variable as
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follows
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```console
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$ export PATH="/Library/Frameworks/GStreamer.framework/Versions/1.0/bin${PATH:+:$PATH}"
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```
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Also note that the `pkg-config` from GStreamer should be the first one in
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the `PATH` as other versions have all kinds of quirks that will cause
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problems.
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#### Homebrew
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Homebrew only installs various plugins if explicitly enabled, so some extra
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`--with-*` flags may be required.
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```console
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$ brew install gstreamer gst-plugins-base gst-plugins-good \
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gst-plugins-bad gst-plugins-ugly gst-libav gst-rtsp-server \
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gst-editing-services --with-orc --with-libogg --with-opus \
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--with-pango --with-theora --with-libvorbis --with-libvpx \
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--enable-gtk3
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```
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Make sure the version of these libraries is >= 1.14.
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<a name="installation-windows"/>
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### Windows
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You can install GStreamer and the plugins via [MSYS2](http://www.msys2.org/)
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with `pacman` or by installing the
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[binaries](https://gstreamer.freedesktop.org/data/pkg/windows/) provided by
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the GStreamer project.
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We recommend using the official GStreamer binaries over MSYS2.
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#### GStreamer Binaries
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You need to download the *two* `.msi` files for your platform from the
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GStreamer website and install them, e.g. `gstreamer-1.0-x86_64-1.20.4.msi` and
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`gstreamer-1.0-devel-x86_64-1.20.4.msi`. Make sure to select the version that
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matches your Rust toolchain, i.e. MinGW or MSVC.
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After installation set the ``PATH` environment variable as follows:
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```console
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# For a UNIX-style shell:
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$ export PATH="c:/gstreamer/1.0/msvc_x86_64/bin${PATH:+:$PATH}"
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# For cmd.exe:
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$ set PATH=C:\gstreamer\1.0\msvc_x86_64\bin;%PATH%
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```
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Make sure to update the path to where you have actually installed GStreamer
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and for the corresponding toolchain.
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Also note that the `pkg-config.exe` from GStreamer should be the first one in
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the `PATH` as other versions have all kinds of quirks that will cause
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problems.
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#### MSYS2 / pacman
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```console
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$ pacman -S glib2-devel pkg-config \
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mingw-w64-x86_64-gstreamer mingw-w64-x86_64-gst-plugins-base \
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mingw-w64-x86_64-gst-plugins-good mingw-w64-x86_64-gst-plugins-bad \
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mingw-w64-x86_64-gst-plugins-ugly mingw-w64-x86_64-gst-libav \
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mingw-w64-x86_64-gst-rtsp-server
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```
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Make sure the version of these libraries is >= 1.14.
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Note that the version of `pkg-config` included in `MSYS2` is
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[known to have problems](https://github.com/rust-lang/pkg-config-rs/issues/51#issuecomment-346300858)
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compiling GStreamer, so you may need to install another version. One option
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would be [`pkg-config-lite`](https://sourceforge.net/projects/pkgconfiglite/).
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<a name="getting-started"/>
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## Getting Started
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The API reference can be found
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[here](https://gstreamer.pages.freedesktop.org/gstreamer-rs/stable/latest/docs/gstreamer/), however it is
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only the Rust API reference and does not explain any of the concepts.
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For getting started with GStreamer development, the best would be to follow
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the [documentation](https://gstreamer.freedesktop.org/documentation/) on the
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GStreamer website, especially the [Application Development
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Manual](https://gstreamer.freedesktop.org/documentation/application-development/).
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While being C-centric, it explains all the fundamental concepts of GStreamer
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and the code examples should be relatively easily translatable to Rust. The
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API is basically the same, function/struct names are the same and everything
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is only more convenient (hopefully) and safer.
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In addition there are
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[tutorials](https://gstreamer.freedesktop.org/documentation/tutorials/) on the
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GStreamer website. Many of them were ported to Rust already and the code can
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be found in the
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[tutorials](https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/tree/main/tutorials)
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directory.
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Some further examples for various aspects of GStreamer and how to use it from
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Rust can be found in the
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[examples](https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/tree/main/examples)
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directory.
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Various GStreamer plugins written in Rust can be found in the
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[gst-plugins-rs](https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs)
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repository.
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<a name="license"/>
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## LICENSE
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gstreamer-rs and all crates contained in here are licensed under either of
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* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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http://www.apache.org/licenses/LICENSE-2.0)
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* MIT license ([LICENSE-MIT](LICENSE-MIT) or
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http://opensource.org/licenses/MIT)
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at your option.
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GStreamer itself is licensed under the Lesser General Public License version
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2.1 or (at your option) any later version:
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https://www.gnu.org/licenses/lgpl-2.1.html
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<a name="contribution"/>
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## Contribution
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Any kinds of contributions are welcome as a pull request.
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Unless you explicitly state otherwise, any contribution intentionally submitted
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for inclusion in gstreamer-rs by you, as defined in the Apache-2.0 license, shall be
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dual licensed as above, without any additional terms or conditions.
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23
gstreamer-tag/src/lib.rs
Normal file
23
gstreamer-tag/src/lib.rs
Normal file
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@ -0,0 +1,23 @@
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// Take a look at the license at the top of the repository in the LICENSE file.
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#![cfg_attr(docsrs, feature(doc_cfg))]
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#![allow(clippy::missing_safety_doc)]
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#![doc = include_str!("../README.md")]
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pub use ffi;
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pub use glib;
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pub use gst;
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macro_rules! skip_assert_initialized {
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() => {};
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}
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mod tags;
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pub use crate::tags::*;
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// Re-export all the traits in a prelude module, so that applications
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// can always "use gst_tag::prelude::*" without getting conflicts
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pub mod prelude {
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#[doc(hidden)]
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pub use gst::prelude::*;
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}
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37
gstreamer-tag/src/tags.rs
Normal file
37
gstreamer-tag/src/tags.rs
Normal file
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@ -0,0 +1,37 @@
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use gst::glib::translate::*;
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use std::ptr;
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pub struct ExtendedComment {
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pub key: Option<glib::GString>,
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pub lang: Option<glib::GString>,
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pub value: glib::GString,
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}
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#[doc(alias = "gst_tag_parse_extended_comment")]
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pub fn tag_parse_extended_comment(
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ext_comment: &str,
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fail_if_no_key: bool,
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) -> Result<ExtendedComment, gst::glib::BoolError> {
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skip_assert_initialized!();
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unsafe {
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let mut c_key = ptr::null_mut();
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let mut c_lang = ptr::null_mut();
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let mut c_value = ptr::null_mut();
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let res: bool = from_glib(ffi::gst_tag_parse_extended_comment(
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ext_comment.to_glib_none().0,
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&mut c_key,
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&mut c_lang,
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&mut c_value,
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fail_if_no_key.into_glib(),
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));
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if !res {
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Err(glib::bool_error!("Failed to parse extended comment"))
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} else {
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let key = from_glib_full(c_key);
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let lang = from_glib_full(c_lang);
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let value = from_glib_full(c_value);
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Ok(ExtendedComment { key, lang, value })
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}
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}
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}
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@ -1,8 +0,0 @@
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// Take a look at the license at the top of the repository in the LICENSE file.
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#[test]
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fn check_gir_file() {
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let res = gir_format_check::check_gir_file("Gir.toml");
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println!("{res}");
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assert_eq!(res.nb_errors, 0);
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}
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