forked from mirrors/gstreamer-rs
ges: Allow subclassing GESFormatter
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/merge_requests/1290>
This commit is contained in:
Thibault Saunier
Sebastian Dröge
parent
9b2a0f55c7
commit
559720693d
4 changed files with 454 additions and 0 deletions
73
gstreamer-editing-services/src/formatter.rs
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73
gstreamer-editing-services/src/formatter.rs
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@ -0,0 +1,73 @@
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// Take a look at the license at the top of the repository in the LICENSE file.
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use crate::prelude::*;
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use gst::glib::translate::*;
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pub trait FormatterExtManual: 'static {
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fn can_load_uri(&self, uri: &str) -> Result<(), glib::Error>;
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#[doc(alias = "ges_formatter_class_register_metas")]
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fn register(
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type_: glib::types::Type,
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name: &str,
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description: Option<&str>,
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extensions: Option<&str>,
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caps: Option<&str>,
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version: f64,
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rank: gst::Rank,
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);
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}
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impl<O: IsA<crate::Formatter>> FormatterExtManual for O {
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fn can_load_uri(&self, uri: &str) -> Result<(), glib::Error> {
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unsafe {
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let klass = self.class_of::<crate::Formatter>().unwrap();
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let f = klass.as_ref().can_load_uri.ok_or_else(|| {
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glib::Error::new(gst::CoreError::Failed, "No `can_load_uri` method defined")
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})?;
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let mut err = std::ptr::null_mut();
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let res = f(
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self.as_ref().to_glib_none().0,
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uri.to_glib_none().0,
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&mut err,
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);
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if res == glib::ffi::GTRUE {
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Ok(())
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} else {
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Err(from_glib_full(err))
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}
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}
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}
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#[doc(alias = "ges_formatter_class_register_metas")]
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fn register(
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type_: glib::types::Type,
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name: &str,
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description: Option<&str>,
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extensions: Option<&str>,
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caps: Option<&str>,
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version: f64,
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rank: gst::Rank,
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) {
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skip_assert_initialized!();
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unsafe {
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let klass = mut_override(
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gst::glib::Class::<crate::Formatter>::from_type(type_)
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.unwrap()
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.as_ref(),
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);
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ffi::ges_formatter_class_register_metas(
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klass,
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name.to_glib_none().0,
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description.to_glib_none().0,
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extensions.to_glib_none().0,
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caps.to_glib_none().0,
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version,
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rank.into_glib(),
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);
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}
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}
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}
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@ -54,7 +54,9 @@ macro_rules! skip_assert_initialized {
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#[allow(deprecated)]
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#[allow(unused_imports)]
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mod auto;
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mod formatter;
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pub use crate::auto::*;
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pub mod subclass;
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#[cfg(feature = "serde")]
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mod flag_serde;
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@ -65,9 +67,12 @@ pub mod prelude {
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#[doc(hidden)]
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pub use gio::prelude::*;
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#[doc(hidden)]
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pub use glib::prelude::*;
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#[doc(hidden)]
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pub use gst_base::prelude::*;
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#[doc(hidden)]
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pub use gst_pbutils::prelude::*;
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pub use crate::auto::traits::*;
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pub use crate::formatter::FormatterExtManual;
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}
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363
gstreamer-editing-services/src/subclass/formatter.rs
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363
gstreamer-editing-services/src/subclass/formatter.rs
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@ -0,0 +1,363 @@
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// Take a look at the license at the top of the repository in the LICENSE file.
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use crate::prelude::*;
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use crate::Formatter;
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use glib::{subclass::prelude::*, translate::*};
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pub trait FormatterImpl: FormatterImplExt + ObjectImpl + Send + Sync {
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fn can_load_uri(&self, uri: &str) -> Result<(), glib::Error> {
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self.parent_can_load_uri(uri)
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}
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fn load_from_uri(&self, timeline: &crate::Timeline, uri: &str) -> Result<(), glib::Error> {
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self.parent_load_from_uri(timeline, uri)
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}
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fn save_to_uri(
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&self,
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timeline: &crate::Timeline,
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uri: &str,
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overwrite: bool,
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) -> Result<(), glib::Error> {
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self.parent_save_to_uri(timeline, uri, overwrite)
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}
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}
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pub trait FormatterImplExt: ObjectSubclass {
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fn parent_can_load_uri(&self, uri: &str) -> Result<(), glib::Error>;
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fn parent_load_from_uri(
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&self,
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timeline: &crate::Timeline,
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uri: &str,
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) -> Result<(), glib::Error>;
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fn parent_save_to_uri(
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&self,
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timeline: &crate::Timeline,
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uri: &str,
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overwrite: bool,
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) -> Result<(), glib::Error>;
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}
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impl<T: FormatterImpl> FormatterImplExt for T {
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fn parent_can_load_uri(&self, uri: &str) -> Result<(), glib::Error> {
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unsafe {
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let data = Self::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GESFormatterClass;
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let f = (*parent_class)
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.can_load_uri
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.expect("Missing parent function `can_load_uri`");
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let mut error = std::ptr::null_mut();
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let res = f(
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self.obj()
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.unsafe_cast_ref::<crate::Formatter>()
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.to_glib_none()
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.0,
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uri.to_glib_none().0,
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&mut error,
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);
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if res == glib::ffi::GFALSE {
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if error.is_null() {
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Err(glib::Error::new(
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gst::CoreError::Failed,
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"Can load uri failed",
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))
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} else {
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Err(from_glib_full(error))
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}
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} else {
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Ok(())
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}
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}
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}
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fn parent_load_from_uri(
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&self,
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timeline: &crate::Timeline,
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uri: &str,
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) -> Result<(), glib::Error> {
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unsafe {
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let data = Self::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GESFormatterClass;
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let f = (*parent_class)
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.load_from_uri
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.expect("Missing parent function `load_from_uri`");
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let mut error = std::ptr::null_mut();
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let res = f(
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self.obj()
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.unsafe_cast_ref::<crate::Formatter>()
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.to_glib_none()
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.0,
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timeline
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.unsafe_cast_ref::<crate::Timeline>()
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.to_glib_none()
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.0,
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uri.to_glib_none().0,
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&mut error,
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);
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if res == glib::ffi::GFALSE {
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if error.is_null() {
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Err(glib::Error::new(
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gst::CoreError::Failed,
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"Load from uri failed",
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))
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} else {
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Err(from_glib_full(error))
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}
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} else {
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Ok(())
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}
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}
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}
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fn parent_save_to_uri(
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&self,
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timeline: &crate::Timeline,
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uri: &str,
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overwrite: bool,
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) -> Result<(), glib::Error> {
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unsafe {
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let data = Self::type_data();
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let parent_class = data.as_ref().parent_class() as *mut ffi::GESFormatterClass;
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let f = (*parent_class)
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.save_to_uri
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.expect("Missing parent function `save_to_uri`");
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let mut error = std::ptr::null_mut();
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let res = f(
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self.obj()
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.unsafe_cast_ref::<crate::Formatter>()
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.to_glib_none()
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.0,
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timeline
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.unsafe_cast_ref::<crate::Timeline>()
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.to_glib_none()
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.0,
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uri.to_glib_none().0,
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overwrite.into_glib(),
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&mut error,
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);
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if res == glib::ffi::GFALSE {
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if error.is_null() {
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Err(glib::Error::new(
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gst::CoreError::Failed,
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"Save to uri failed",
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))
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} else {
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Err(from_glib_full(error))
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}
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} else {
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Ok(())
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}
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}
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}
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}
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unsafe impl<T: FormatterImpl> IsSubclassable<T> for Formatter {
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fn class_init(klass: &mut glib::Class<Self>) {
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Self::parent_class_init::<T>(klass);
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let klass = klass.as_mut();
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klass.can_load_uri = Some(formatter_can_load_uri::<T>);
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klass.load_from_uri = Some(formatter_load_from_uri::<T>);
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klass.save_to_uri = Some(formatter_save_to_uri::<T>);
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}
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}
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unsafe extern "C" fn formatter_can_load_uri<T: FormatterImpl>(
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ptr: *mut ffi::GESFormatter,
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uri: *const libc::c_char,
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error: *mut *mut glib::ffi::GError,
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) -> glib::ffi::gboolean {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.imp();
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match imp.can_load_uri(glib::GString::from_glib_borrow(uri).as_str()) {
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Err(err) => {
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if !error.is_null() {
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*error = err.into_glib_ptr();
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}
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glib::ffi::GFALSE
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}
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Ok(_) => glib::ffi::GTRUE,
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}
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}
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unsafe extern "C" fn formatter_load_from_uri<T: FormatterImpl>(
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ptr: *mut ffi::GESFormatter,
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timeline: *mut ffi::GESTimeline,
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uri: *const libc::c_char,
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error: *mut *mut glib::ffi::GError,
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) -> glib::ffi::gboolean {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.imp();
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let timeline = from_glib_borrow(timeline);
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match imp.load_from_uri(&timeline, glib::GString::from_glib_borrow(uri).as_str()) {
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Err(err) => {
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if !error.is_null() {
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*error = err.into_glib_ptr();
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}
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glib::ffi::GFALSE
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}
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Ok(_) => glib::ffi::GTRUE,
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}
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}
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unsafe extern "C" fn formatter_save_to_uri<T: FormatterImpl>(
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ptr: *mut ffi::GESFormatter,
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timeline: *mut ffi::GESTimeline,
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uri: *const libc::c_char,
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overwrite: glib::ffi::gboolean,
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error: *mut *mut glib::ffi::GError,
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) -> glib::ffi::gboolean {
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.imp();
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let timeline = from_glib_borrow(timeline);
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match imp.save_to_uri(
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&timeline,
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glib::GString::from_glib_borrow(uri).as_str(),
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from_glib(overwrite),
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) {
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Err(err) => {
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if !error.is_null() {
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*error = err.into_glib_ptr();
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}
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glib::ffi::GFALSE
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}
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Ok(_) => glib::ffi::GTRUE,
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::Formatter;
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pub mod imp {
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use super::*;
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#[derive(Default)]
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pub struct SimpleFormatter;
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#[glib::object_subclass]
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impl ObjectSubclass for SimpleFormatter {
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const NAME: &'static str = "SimpleFormatter";
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type Type = super::SimpleFormatter;
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type ParentType = Formatter;
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}
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impl ObjectImpl for SimpleFormatter {}
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impl FormatterImpl for SimpleFormatter {
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fn can_load_uri(&self, uri: &str) -> Result<(), glib::Error> {
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if uri.starts_with("ges:test") {
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Ok(())
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} else {
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self.parent_can_load_uri(uri)
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}
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}
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fn load_from_uri(
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&self,
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timeline: &crate::Timeline,
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_uri: &str,
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) -> Result<(), glib::Error> {
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timeline.append_layer();
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Ok(())
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}
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fn save_to_uri(
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&self,
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timeline: &crate::Timeline,
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uri: &str,
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_overwrite: bool,
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) -> Result<(), glib::Error> {
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unsafe { timeline.set_data("saved", uri.to_string()) };
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Ok(())
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}
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}
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}
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glib::wrapper! {
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pub struct SimpleFormatter(ObjectSubclass<imp::SimpleFormatter>) @extends Formatter, gst::Object;
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}
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impl SimpleFormatter {
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pub fn new() -> Self {
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glib::Object::builder().build()
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}
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}
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impl Default for SimpleFormatter {
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fn default() -> Self {
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Self::new()
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}
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}
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#[test]
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fn test_formatter_subclass() {
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crate::init().unwrap();
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let formatter = SimpleFormatter::new();
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formatter
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.can_load_uri("ges:test:")
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.expect("We can load anything...");
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assert!(formatter.can_load_uri("nottest").is_err());
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let timeline = crate::Timeline::new();
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assert_eq!(timeline.layers().len(), 0);
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#[allow(deprecated)]
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formatter
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.load_from_uri(&timeline, "test")
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.expect("We can load anything...");
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assert_eq!(timeline.layers().len(), 1);
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unsafe {
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assert_eq!(timeline.data::<Option<String>>("saved"), None);
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}
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#[allow(deprecated)]
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formatter
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.save_to_uri(&timeline, "test", false)
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.expect("We can save anything...");
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unsafe {
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assert_eq!(
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timeline.data::<String>("saved").unwrap().as_ref(),
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&"test".to_string()
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);
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}
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Formatter::register(
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SimpleFormatter::static_type(),
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"SimpleFormatter",
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None,
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None,
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None,
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1.0,
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gst::Rank::Primary,
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);
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let proj = crate::Project::new(Some("ges:test:"));
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let timeline = proj
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.extract()
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.unwrap()
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.downcast::<crate::Timeline>()
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.unwrap();
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assert_eq!(timeline.layers().len(), 1);
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let proj = crate::Project::new(Some("ges:notest:"));
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assert!(proj.extract().is_err());
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}
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}
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13
gstreamer-editing-services/src/subclass/mod.rs
Normal file
13
gstreamer-editing-services/src/subclass/mod.rs
Normal file
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@ -0,0 +1,13 @@
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// Take a look at the license at the top of the repository in the LICENSE file.
|
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|
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#![allow(clippy::cast_ptr_alignment)]
|
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|
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mod formatter;
|
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|
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pub mod prelude {
|
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#[doc(hidden)]
|
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pub use glib::subclass::prelude::*;
|
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pub use gst::subclass::prelude::*;
|
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|
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pub use super::formatter::{FormatterImpl, FormatterImplExt};
|
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}
|
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