mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-09-24 13:00:27 +00:00
4651c9db4d
This is the version that is available in Ubuntu 18.04.
132 lines
6.2 KiB
Rust
132 lines
6.2 KiB
Rust
// Take a look at the license at the top of the repository in the LICENSE file.
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pub const MAJOR_VERSION: i32 = 1;
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cfg_if::cfg_if! {
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if #[cfg(feature = "v1_22")] {
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pub const MINOR_VERSION: i32 = 21;
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} else if #[cfg(feature = "v1_20")] {
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pub const MINOR_VERSION: i32 = 20;
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} else if #[cfg(feature = "v1_18")] {
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pub const MINOR_VERSION: i32 = 18;
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} else if #[cfg(feature = "v1_16")] {
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pub const MINOR_VERSION: i32 = 16;
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} else {
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pub const MINOR_VERSION: i32 = 14;
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}
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}
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#[macro_export]
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macro_rules! plugin_define(
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($name:ident, $description:expr, $plugin_init:ident,
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$version:expr, $license:expr, $source:expr,
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$package:expr, $origin:expr $(, $release_datetime:expr)?) => {
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pub mod plugin_desc {
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#[repr(transparent)]
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pub struct GstPluginDesc($crate::ffi::GstPluginDesc);
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unsafe impl Send for GstPluginDesc {}
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unsafe impl Sync for GstPluginDesc {}
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static GST_PLUGIN_DESC: GstPluginDesc = GstPluginDesc($crate::ffi::GstPluginDesc {
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major_version: $crate::subclass::MAJOR_VERSION,
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minor_version: $crate::subclass::MINOR_VERSION,
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name: concat!(stringify!($name), "\0") as *const str as *const _,
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description: concat!($description, "\0") as *const str as *const _,
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plugin_init: Some(plugin_init_trampoline),
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version: concat!($version, "\0") as *const str as *const _,
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license: concat!($license, "\0") as *const str as *const _,
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source: concat!($source, "\0") as *const str as *const _,
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package: concat!($package, "\0") as *const str as *const _,
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origin: concat!($origin, "\0") as *const str as *const _,
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release_datetime: {
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// NB: if this looks a lot like `Option`, it is not a coincidence. Alas,
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// Option::or is not `const` and neither is `unwrap_or` so we have to roll our
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// own oli-obk-ified enum instead.
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enum OptionalPtr<T>{
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Null,
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Some(*const T),
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}
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impl<T: Sized> OptionalPtr<T> {
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const fn with(self, value: *const T) -> Self {
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Self::Some(value)
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}
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const fn ptr(self) -> *const T {
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match self {
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Self::Null => std::ptr::null(),
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Self::Some(ptr) => ptr
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}
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}
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}
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OptionalPtr::Null
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$(.with(concat!($release_datetime, "\0").as_ptr() as _))?
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.ptr()
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},
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_gst_reserved: [0 as $crate::glib::ffi::gpointer; 4],
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});
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pub fn plugin_register_static() -> Result<(), $crate::glib::BoolError> {
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unsafe {
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$crate::glib::result_from_gboolean!(
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$crate::ffi::gst_plugin_register_static(
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$crate::subclass::MAJOR_VERSION,
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$crate::subclass::MINOR_VERSION,
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concat!(stringify!($name), "\0") as *const str as *const _,
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concat!($description, "\0") as *const str as _,
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Some(plugin_init_trampoline),
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concat!($version, "\0") as *const str as *const _,
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concat!($license, "\0") as *const str as *const _,
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concat!($source, "\0") as *const str as *const _,
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concat!($package, "\0") as *const str as *const _,
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concat!($origin, "\0") as *const str as *const _,
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),
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"Failed to register the plugin"
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)
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}
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}
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$crate::paste::item! {
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#[no_mangle]
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#[allow(clippy::missing_safety_doc)]
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pub unsafe extern "C" fn [<gst_plugin_ $name _register>] () {
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let _ = plugin_register_static();
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}
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#[no_mangle]
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#[allow(clippy::missing_safety_doc)]
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pub unsafe extern "C" fn [<gst_plugin_ $name _get_desc>] () -> *const $crate::ffi::GstPluginDesc {
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&GST_PLUGIN_DESC.0
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}
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}
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#[allow(clippy::missing_safety_doc)]
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unsafe extern "C" fn plugin_init_trampoline(plugin: *mut $crate::ffi::GstPlugin) -> $crate::glib::ffi::gboolean {
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use std::panic::{self, AssertUnwindSafe};
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let panic_result = panic::catch_unwind(AssertUnwindSafe(|| super::$plugin_init(&$crate::glib::translate::from_glib_borrow(plugin))));
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match panic_result {
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Ok(register_result) => match register_result {
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Ok(_) => $crate::glib::ffi::GTRUE,
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Err(err) => {
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let cat = $crate::DebugCategory::get("GST_PLUGIN_LOADING").unwrap();
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$crate::error!(cat, "Failed to register plugin: {}", err);
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$crate::glib::ffi::GFALSE
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}
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}
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Err(err) => {
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let cat = $crate::DebugCategory::get("GST_PLUGIN_LOADING").unwrap();
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if let Some(cause) = err.downcast_ref::<&str>() {
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$crate::error!(cat, "Failed to initialize plugin due to panic: {}", cause);
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} else if let Some(cause) = err.downcast_ref::<String>() {
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$crate::error!(cat, "Failed to initialize plugin due to panic: {}", cause);
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} else {
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$crate::error!(cat, "Failed to initialize plugin due to panic");
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}
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$crate::glib::ffi::GFALSE
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}
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}
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}
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}
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pub use self::plugin_desc::plugin_register_static;
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};
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);
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