forked from mirrors/gstreamer-rs
gstreamer: Add support for gst::CustomMeta
This commit is contained in:
Sebastian Dröge
parent
80ee1edec5
commit
7c5303c492
1 changed files with 189 additions and 0 deletions
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@ -175,6 +175,18 @@ impl<'a> MetaRef<'a, Meta> {
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None
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}
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}
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#[cfg(any(feature = "v1_20", feature = "dox"))]
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#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
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pub fn try_as_custom_meta(&self) -> Option<&MetaRef<'a, CustomMeta>> {
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unsafe {
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if ffi::gst_meta_info_is_custom(&*self.0.info) == glib::ffi::GFALSE {
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return None;
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}
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Some(&*(self as *const MetaRef<'a, Meta> as *const MetaRef<'a, CustomMeta>))
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}
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}
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}
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impl<'a, T, U> MetaRefMut<'a, T, U> {
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@ -250,6 +262,30 @@ impl<'a, U> MetaRefMut<'a, Meta, U> {
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None
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}
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}
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#[cfg(any(feature = "v1_20", feature = "dox"))]
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#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
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pub fn try_as_custom_meta(&self) -> Option<&MetaRefMut<'a, CustomMeta, U>> {
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unsafe {
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if ffi::gst_meta_info_is_custom(&*self.0.info) == glib::ffi::GFALSE {
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return None;
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}
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Some(&*(self as *const MetaRefMut<'a, Meta, U> as *const MetaRefMut<'a, CustomMeta, U>))
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}
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}
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#[cfg(any(feature = "v1_20", feature = "dox"))]
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#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
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pub fn try_as_mut_custom_meta(&mut self) -> Option<&mut MetaRefMut<'a, CustomMeta, U>> {
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unsafe {
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if ffi::gst_meta_info_is_custom(&*self.0.info) == glib::ffi::GFALSE {
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return None;
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}
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Some(&mut *(self as *mut MetaRefMut<'a, Meta, U> as *mut MetaRefMut<'a, CustomMeta, U>))
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}
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}
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}
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#[repr(transparent)]
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@ -457,6 +493,159 @@ impl fmt::Debug for ReferenceTimestampMeta {
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}
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}
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#[cfg(any(feature = "v1_20", feature = "dox"))]
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#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
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#[repr(transparent)]
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#[doc(alias = "GstCustomMeta")]
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pub struct CustomMeta(ffi::GstCustomMeta);
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#[cfg(any(feature = "v1_20", feature = "dox"))]
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#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
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unsafe impl Send for CustomMeta {}
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#[cfg(any(feature = "v1_20", feature = "dox"))]
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#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
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unsafe impl Sync for CustomMeta {}
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#[cfg(any(feature = "v1_20", feature = "dox"))]
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#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
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impl CustomMeta {
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#[doc(alias = "gst_meta_register_custom")]
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pub fn register<
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F: Fn(&mut BufferRef, &CustomMeta, &BufferRef, glib::Quark) -> bool + Send + Sync + 'static,
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>(
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name: &str,
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tags: &[&str],
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transform_func: F,
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) {
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unsafe extern "C" fn transform_func_trampoline<
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F: Fn(&mut BufferRef, &CustomMeta, &BufferRef, glib::Quark) -> bool
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+ Send
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+ Sync
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+ 'static,
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>(
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dest: *mut ffi::GstBuffer,
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meta: *mut ffi::GstCustomMeta,
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src: *mut ffi::GstBuffer,
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type_: glib::ffi::GQuark,
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_data: glib::ffi::gpointer,
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user_data: glib::ffi::gpointer,
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) -> glib::ffi::gboolean {
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let func = &*(user_data as *const F);
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let res = func(
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BufferRef::from_mut_ptr(dest),
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&*(meta as *const CustomMeta),
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BufferRef::from_ptr(src),
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from_glib(type_),
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);
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res.into_glib()
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}
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unsafe extern "C" fn transform_func_free<F>(ptr: glib::ffi::gpointer) {
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let _ = Box::from_raw(ptr as *mut F);
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}
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unsafe {
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ffi::gst_meta_register_custom(
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name.to_glib_none().0,
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tags.to_glib_none().0,
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Some(transform_func_trampoline::<F>),
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Box::into_raw(Box::new(transform_func)) as glib::ffi::gpointer,
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Some(transform_func_free::<F>),
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);
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}
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}
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#[doc(alias = "gst_buffer_add_custom_meta")]
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pub fn add<'a>(
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buffer: &'a mut BufferRef,
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name: &str,
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) -> Result<MetaRefMut<'a, Self, Standalone>, glib::BoolError> {
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skip_assert_initialized!();
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unsafe {
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let meta = ffi::gst_buffer_add_custom_meta(buffer.as_mut_ptr(), name.to_glib_none().0);
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if meta.is_null() {
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return Err(glib::bool_error!("Failed to add custom meta"));
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}
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Ok(MetaRefMut {
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meta: &mut *(meta as *mut Self),
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buffer,
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mode: PhantomData,
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})
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}
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}
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#[doc(alias = "gst_buffer_get_custom_meta")]
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pub fn from_buffer<'a>(
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buffer: &'a BufferRef,
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name: &str,
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) -> Result<MetaRef<'a, Self>, glib::BoolError> {
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skip_assert_initialized!();
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unsafe {
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let meta = ffi::gst_buffer_get_custom_meta(buffer.as_mut_ptr(), name.to_glib_none().0);
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if meta.is_null() {
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return Err(glib::bool_error!("Failed to get custom meta"));
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}
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Ok(MetaRef {
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meta: &*(meta as *const Self),
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buffer,
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})
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}
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}
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#[doc(alias = "gst_buffer_get_custom_meta")]
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pub fn from_mut_buffer<'a>(
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buffer: &'a mut BufferRef,
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name: &str,
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) -> Result<MetaRefMut<'a, Self, Standalone>, glib::BoolError> {
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skip_assert_initialized!();
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unsafe {
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let meta = ffi::gst_buffer_get_custom_meta(buffer.as_mut_ptr(), name.to_glib_none().0);
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if meta.is_null() {
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return Err(glib::bool_error!("Failed to get custom meta"));
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}
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Ok(MetaRefMut {
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meta: &mut *(meta as *mut Self),
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buffer,
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mode: PhantomData,
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})
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}
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}
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#[doc(alias = "gst_custom_meta_get_structure")]
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pub fn structure(&self) -> &crate::StructureRef {
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unsafe {
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crate::StructureRef::from_glib_borrow(ffi::gst_custom_meta_get_structure(mut_override(
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&self.0,
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)))
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}
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}
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#[doc(alias = "gst_custom_meta_get_structure")]
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pub fn mut_structure(&mut self) -> &mut crate::StructureRef {
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unsafe {
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crate::StructureRef::from_glib_borrow_mut(ffi::gst_custom_meta_get_structure(
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&mut self.0,
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))
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}
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}
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#[doc(alias = "gst_custom_meta_has_name")]
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pub fn has_name(&self, name: &str) -> bool {
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unsafe {
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from_glib(ffi::gst_custom_meta_has_name(
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mut_override(&self.0),
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name.to_glib_none().0,
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))
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}
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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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