Use borrowed miniobject/structure types in more places

When the function does not keep around an additional reference of the
value this is correct and more flexible for callers.

https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/issues/420

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/merge_requests/1152>

gstreamer-base/src/functions.rs

@@ -59,14 +59,14 @@ pub fn type_find_helper_for_data_with_extension(
 #[doc(alias = "gst_type_find_helper_for_buffer")]
 pub fn type_find_helper_for_buffer<P: IsA<gst::Object>>(
     obj: Option<&P>,
-    buf: &gst::Buffer,
+    buf: &gst::BufferRef,
 ) -> Result<(gst::Caps, gst::TypeFindProbability), glib::error::BoolError> {
     assert_initialized_main_thread!();
     unsafe {
         let mut prob = mem::MaybeUninit::uninit();
         let ret = ffi::gst_type_find_helper_for_buffer(
             obj.map(|p| p.as_ref()).to_glib_none().0,
-            buf.to_glib_none().0,
+            mut_override(buf.as_ptr()),
             prob.as_mut_ptr(),
         );
         if ret.is_null() {
@@ -82,7 +82,7 @@ pub fn type_find_helper_for_buffer<P: IsA<gst::Object>>(
 #[doc(alias = "gst_type_find_helper_for_buffer_with_extension")]
 pub fn type_find_helper_for_buffer_with_extension<P: IsA<gst::Object>>(
     obj: Option<&P>,
-    buf: &gst::Buffer,
+    buf: &gst::BufferRef,
     extension: Option<&str>,
 ) -> Result<(gst::Caps, gst::TypeFindProbability), glib::error::BoolError> {
     assert_initialized_main_thread!();
@@ -90,7 +90,7 @@ pub fn type_find_helper_for_buffer_with_extension<P: IsA<gst::Object>>(
         let mut prob = mem::MaybeUninit::uninit();
         let ret = ffi::gst_type_find_helper_for_buffer_with_extension(
             obj.map(|p| p.as_ref()).to_glib_none().0,
-            buf.to_glib_none().0,
+            mut_override(buf.as_ptr()),
             extension.to_glib_none().0,
             prob.as_mut_ptr(),
         );

gstreamer-pbutils/Gir.toml

@@ -146,11 +146,6 @@ status = "generate"
         [object.function.return]
         nullable_return_is_error = "Unsupported caps"
 
-    [[object.function]]
-    name = "codec_utils_opus_create_caps_from_header"
-        [object.function.return]
-        nullable_return_is_error = "Failed to create caps from Opus headers"
-
     [[object.function]]
     name = "codec_utils_opus_create_caps"
     # Manual checks
@@ -171,6 +166,16 @@ status = "generate"
     # Manual checks
     manual = true
 
+    [[object.function]]
+    name = "codec_utils_opus_create_caps_from_header"
+    # Use &CapsRef
+    manual = true
+
+    [[object.function]]
+    pattern = "(codec_utils_caps_get_mime_codec|pb_utils_get_caps_description_flags|pb_utils_get_file_extension_from_caps)"
+    # Use &CapsRef
+    manual = true
+
     # Plugin installer API needs some manual impls
     [[object.function]]
     pattern = "install_plugins.*"

gstreamer-pbutils/src/auto/functions.rs

@@ -4,9 +4,6 @@
 // DO NOT EDIT
 
 use crate::EncodingTarget;
-#[cfg(any(feature = "v1_20", feature = "dox"))]
-#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
-use crate::PbUtilsCapsDescriptionFlags;
 use glib::translate::*;
 use std::mem;
 
@@ -74,19 +71,6 @@ pub fn codec_utils_caps_from_mime_codec(codecs_field: &str) -> Option<gst::Caps>
     }
 }
 
-#[cfg(any(feature = "v1_20", feature = "dox"))]
-#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
-#[doc(alias = "gst_codec_utils_caps_get_mime_codec")]
-pub fn codec_utils_caps_get_mime_codec(caps: &gst::Caps) -> Result<glib::GString, glib::BoolError> {
-    assert_initialized_main_thread!();
-    unsafe {
-        Option::<_>::from_glib_full(ffi::gst_codec_utils_caps_get_mime_codec(
-            caps.to_glib_none().0,
-        ))
-        .ok_or_else(|| glib::bool_error!("Unsupported caps"))
-    }
-}
-
 #[doc(alias = "gst_codec_utils_h264_get_level")]
 pub fn codec_utils_h264_get_level(sps: &[u8]) -> Result<glib::GString, glib::BoolError> {
     assert_initialized_main_thread!();
@@ -200,21 +184,6 @@ pub fn codec_utils_mpeg4video_get_profile(
     }
 }
 
-#[doc(alias = "gst_codec_utils_opus_create_caps_from_header")]
-pub fn codec_utils_opus_create_caps_from_header(
-    header: &gst::Buffer,
-    comments: Option<&gst::Buffer>,
-) -> Result<gst::Caps, glib::BoolError> {
-    assert_initialized_main_thread!();
-    unsafe {
-        Option::<_>::from_glib_full(ffi::gst_codec_utils_opus_create_caps_from_header(
-            header.to_glib_none().0,
-            comments.to_glib_none().0,
-        ))
-        .ok_or_else(|| glib::bool_error!("Failed to create caps from Opus headers"))
-    }
-}
-
 #[doc(alias = "gst_encoding_list_all_targets")]
 pub fn encoding_list_all_targets(categoryname: Option<&str>) -> Vec<EncodingTarget> {
     assert_initialized_main_thread!();
@@ -231,18 +200,6 @@ pub fn encoding_list_available_categories() -> Vec<glib::GString> {
     unsafe { FromGlibPtrContainer::from_glib_full(ffi::gst_encoding_list_available_categories()) }
 }
 
-#[cfg(any(feature = "v1_20", feature = "dox"))]
-#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
-#[doc(alias = "gst_pb_utils_get_caps_description_flags")]
-pub fn pb_utils_get_caps_description_flags(caps: &gst::Caps) -> PbUtilsCapsDescriptionFlags {
-    assert_initialized_main_thread!();
-    unsafe {
-        from_glib(ffi::gst_pb_utils_get_caps_description_flags(
-            caps.to_glib_none().0,
-        ))
-    }
-}
-
 #[doc(alias = "gst_pb_utils_get_element_description")]
 pub fn pb_utils_get_element_description(factory_name: &str) -> glib::GString {
     assert_initialized_main_thread!();
@@ -253,18 +210,6 @@ pub fn pb_utils_get_element_description(factory_name: &str) -> glib::GString {
     }
 }
 
-#[cfg(any(feature = "v1_20", feature = "dox"))]
-#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
-#[doc(alias = "gst_pb_utils_get_file_extension_from_caps")]
-pub fn pb_utils_get_file_extension_from_caps(caps: &gst::Caps) -> Option<glib::GString> {
-    assert_initialized_main_thread!();
-    unsafe {
-        from_glib_full(ffi::gst_pb_utils_get_file_extension_from_caps(
-            caps.to_glib_none().0,
-        ))
-    }
-}
-
 #[doc(alias = "gst_pb_utils_get_sink_description")]
 pub fn pb_utils_get_sink_description(protocol: &str) -> glib::GString {
     assert_initialized_main_thread!();

gstreamer-pbutils/src/functions.rs

@@ -253,6 +253,23 @@ pub fn codec_utils_opus_create_caps(
     }
 }
 
+#[doc(alias = "gst_codec_utils_opus_create_caps_from_header")]
+pub fn codec_utils_opus_create_caps_from_header(
+    header: &gst::BufferRef,
+    comments: Option<&gst::BufferRef>,
+) -> Result<gst::Caps, glib::BoolError> {
+    assert_initialized_main_thread!();
+    unsafe {
+        Option::<_>::from_glib_full(ffi::gst_codec_utils_opus_create_caps_from_header(
+            mut_override(header.as_ptr()),
+            comments
+                .map(|b| mut_override(b.as_ptr()))
+                .unwrap_or(ptr::null_mut()),
+        ))
+        .ok_or_else(|| glib::bool_error!("Failed to create caps from Opus headers"))
+    }
+}
+
 #[doc(alias = "gst_codec_utils_opus_create_header")]
 #[allow(clippy::too_many_arguments)]
 pub fn codec_utils_opus_create_header(
@@ -297,7 +314,7 @@ pub fn codec_utils_opus_create_header(
 
 #[doc(alias = "gst_codec_utils_opus_parse_caps")]
 pub fn codec_utils_opus_parse_caps(
-    caps: &gst::Caps,
+    caps: &gst::CapsRef,
     channel_mapping: Option<&mut [u8; 256]>,
 ) -> Result<(u32, u8, u8, u8, u8), glib::BoolError> {
     assert_initialized_main_thread!();
@@ -340,7 +357,7 @@ pub fn codec_utils_opus_parse_caps(
 #[doc(alias = "gst_codec_utils_opus_parse_header")]
 #[allow(clippy::type_complexity)]
 pub fn codec_utils_opus_parse_header(
-    header: &gst::Buffer,
+    header: &gst::BufferRef,
     channel_mapping: Option<&mut [u8; 256]>,
 ) -> Result<(u32, u8, u8, u8, u8, u16, i16), glib::BoolError> {
     assert_initialized_main_thread!();
@@ -385,3 +402,40 @@ pub fn codec_utils_opus_parse_header(
         }
     }
 }
+
+#[cfg(any(feature = "v1_20", feature = "dox"))]
+#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
+#[doc(alias = "gst_codec_utils_caps_get_mime_codec")]
+pub fn codec_utils_caps_get_mime_codec(
+    caps: &gst::CapsRef,
+) -> Result<glib::GString, glib::BoolError> {
+    assert_initialized_main_thread!();
+    unsafe {
+        Option::<_>::from_glib_full(ffi::gst_codec_utils_caps_get_mime_codec(mut_override(
+            caps.as_ptr(),
+        )))
+        .ok_or_else(|| glib::bool_error!("Unsupported caps"))
+    }
+}
+
+#[cfg(any(feature = "v1_20", feature = "dox"))]
+#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
+#[doc(alias = "gst_pb_utils_get_caps_description_flags")]
+pub fn pb_utils_get_caps_description_flags(
+    caps: &gst::CapsRef,
+) -> crate::PbUtilsCapsDescriptionFlags {
+    assert_initialized_main_thread!();
+    unsafe { from_glib(ffi::gst_pb_utils_get_caps_description_flags(caps.as_ptr())) }
+}
+
+#[cfg(any(feature = "v1_20", feature = "dox"))]
+#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
+#[doc(alias = "gst_pb_utils_get_file_extension_from_caps")]
+pub fn pb_utils_get_file_extension_from_caps(caps: &gst::CapsRef) -> Option<glib::GString> {
+    assert_initialized_main_thread!();
+    unsafe {
+        from_glib_full(ffi::gst_pb_utils_get_file_extension_from_caps(
+            caps.as_ptr(),
+        ))
+    }
+}

gstreamer-play/Gir.toml

@@ -123,6 +123,11 @@ final_type = true
         [object.function.return]
         bool_return_is_error = "Failed to set visualization"
 
+    [[object.function]]
+    name = "get_video_snapshot"
+    # &StructureRef
+    manual = true
+
 [[object]]
 name = "GstPlay.PlayAudioInfo"
 status = "generate"

gstreamer-play/src/auto/play.rs

@@ -6,7 +6,6 @@
 use crate::PlayAudioInfo;
 use crate::PlayColorBalanceType;
 use crate::PlayMediaInfo;
-use crate::PlaySnapshotFormat;
 use crate::PlaySubtitleInfo;
 use crate::PlayVideoInfo;
 use crate::PlayVideoRenderer;
@@ -157,22 +156,6 @@ impl Play {
         unsafe { from_glib_full(ffi::gst_play_get_uri(self.to_glib_none().0)) }
     }
 
-    #[doc(alias = "gst_play_get_video_snapshot")]
-    #[doc(alias = "get_video_snapshot")]
-    pub fn video_snapshot(
-        &self,
-        format: PlaySnapshotFormat,
-        config: Option<&gst::Structure>,
-    ) -> Option<gst::Sample> {
-        unsafe {
-            from_glib_full(ffi::gst_play_get_video_snapshot(
-                self.to_glib_none().0,
-                format.into_glib(),
-                config.to_glib_none().0,
-            ))
-        }
-    }
-
     #[doc(alias = "gst_play_get_volume")]
     #[doc(alias = "get_volume")]
     pub fn volume(&self) -> f64 {

gstreamer-play/src/play.rs

@@ -19,4 +19,20 @@ impl Play {
             )
         }
     }
+
+    #[doc(alias = "gst_play_get_video_snapshot")]
+    #[doc(alias = "get_video_snapshot")]
+    pub fn video_snapshot(
+        &self,
+        format: crate::PlaySnapshotFormat,
+        config: Option<&gst::StructureRef>,
+    ) -> Option<gst::Sample> {
+        unsafe {
+            from_glib_full(ffi::gst_play_get_video_snapshot(
+                self.to_glib_none().0,
+                format.into_glib(),
+                mut_override(config.map(|c| c.as_ptr()).unwrap_or(std::ptr::null())),
+            ))
+        }
+    }
 }

gstreamer-player/Gir.toml

@@ -176,6 +176,11 @@ final_type = true
     name = "subtitle-video-offset"
     version = "1.16"
 
+    [[object.function]]
+    name = "get_video_snapshot"
+    # Use &StructureRef
+    manual = true
+
 [[object]]
 name = "GstPlayer.PlayerAudioInfo"
 status = "generate"

gstreamer-player/src/auto/player.rs

@@ -7,7 +7,6 @@ use crate::PlayerAudioInfo;
 use crate::PlayerColorBalanceType;
 use crate::PlayerMediaInfo;
 use crate::PlayerSignalDispatcher;
-use crate::PlayerSnapshotFormat;
 use crate::PlayerState;
 use crate::PlayerSubtitleInfo;
 use crate::PlayerVideoInfo;
@@ -167,22 +166,6 @@ impl Player {
         unsafe { from_glib_full(ffi::gst_player_get_uri(self.to_glib_none().0)) }
     }
 
-    #[doc(alias = "gst_player_get_video_snapshot")]
-    #[doc(alias = "get_video_snapshot")]
-    pub fn video_snapshot(
-        &self,
-        format: PlayerSnapshotFormat,
-        config: Option<&gst::Structure>,
-    ) -> Option<gst::Sample> {
-        unsafe {
-            from_glib_full(ffi::gst_player_get_video_snapshot(
-                self.to_glib_none().0,
-                format.into_glib(),
-                config.to_glib_none().0,
-            ))
-        }
-    }
-
     #[doc(alias = "gst_player_get_volume")]
     #[doc(alias = "get_volume")]
     pub fn volume(&self) -> f64 {

gstreamer-player/src/player.rs

@@ -78,6 +78,22 @@ impl Player {
             )
         }
     }
+
+    #[doc(alias = "gst_player_get_video_snapshot")]
+    #[doc(alias = "get_video_snapshot")]
+    pub fn video_snapshot(
+        &self,
+        format: crate::PlayerSnapshotFormat,
+        config: Option<&gst::StructureRef>,
+    ) -> Option<gst::Sample> {
+        unsafe {
+            from_glib_full(ffi::gst_player_get_video_snapshot(
+                self.to_glib_none().0,
+                format.into_glib(),
+                mut_override(config.map(|c| c.as_ptr()).unwrap_or(std::ptr::null())),
+            ))
+        }
+    }
 }
 
 unsafe extern "C" fn duration_changed_trampoline<

gstreamer-sdp/src/sdp_media.rs

@@ -610,15 +610,12 @@ impl SDPMediaRef {
 
     #[doc(alias = "gst_sdp_media_set_media_from_caps")]
     pub fn set_media_from_caps(
-        caps: &gst::Caps,
+        caps: &gst::CapsRef,
         media: &mut SDPMedia,
     ) -> Result<(), glib::BoolError> {
         assert_initialized_main_thread!();
         let result = unsafe {
-            ffi::gst_sdp_media_set_media_from_caps(
+            ffi::gst_sdp_media_set_media_from_caps(caps.as_ptr(), media.to_glib_none_mut().0)
-                caps.to_glib_none().0,
-                media.to_glib_none_mut().0,
-            )
         };
         match result {
             ffi::GST_SDP_OK => Ok(()),

gstreamer-video/Gir.toml

@@ -29,7 +29,6 @@ generate = [
     "GstVideo.VideoAggregatorParallelConvertPad",
     "GstVideo.VideoAlphaMode",
     "GstVideo.VideoBufferPool",
-    "GstVideo.VideoCaptionType",
     "GstVideo.VideoChromaMode",
     "GstVideo.VideoDecoderRequestSyncPointFlags",
     "GstVideo.VideoDitherMethod",
@@ -364,6 +363,14 @@ status = "generate"
     name = "last"
     ignore = true
 
+[[object]]
+name = "GstVideo.VideoCaptionType"
+status = "generate"
+    [[object.function]]
+    name = "from_caps"
+    # Use &CapsRef
+    manual = true
+
 [[object]]
 name = "GstVideo.VideoChromaSite"
 status = "generate"
@@ -717,6 +724,11 @@ status = "generate"
         [object.function.return]
         bool_return_is_error = "Failed to set vertical flipping"
 
+    [[object.function]]
+    name = "from_tag"
+    # Use &TagListRef and move to the enum
+    manual = true
+
 [[object]]
 name = "GstVideo.VideoOverlay"
 status = "generate"

gstreamer-video/src/auto/enums.rs

@@ -803,12 +803,6 @@ pub enum VideoCaptionType {
 #[cfg(any(feature = "v1_16", feature = "dox"))]
 #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_16")))]
 impl VideoCaptionType {
-    #[doc(alias = "gst_video_caption_type_from_caps")]
-    pub fn from_caps(caps: &gst::Caps) -> VideoCaptionType {
-        assert_initialized_main_thread!();
-        unsafe { from_glib(ffi::gst_video_caption_type_from_caps(caps.to_glib_none().0)) }
-    }
-
     #[doc(alias = "gst_video_caption_type_to_caps")]
     pub fn to_caps(self) -> gst::Caps {
         assert_initialized_main_thread!();

gstreamer-video/src/auto/video_orientation.rs

@@ -3,9 +3,6 @@
 // from gst-gir-files (https://gitlab.freedesktop.org/gstreamer/gir-files-rs.git)
 // DO NOT EDIT
 
-#[cfg(any(feature = "v1_20", feature = "dox"))]
-#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
-use crate::VideoOrientationMethod;
 use glib::object::IsA;
 use glib::translate::*;
 use std::mem;
@@ -21,25 +18,6 @@ glib::wrapper! {
 
 impl VideoOrientation {
     pub const NONE: Option<&'static VideoOrientation> = None;
-
-    #[cfg(any(feature = "v1_20", feature = "dox"))]
-    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
-    #[doc(alias = "gst_video_orientation_from_tag")]
-    pub fn from_tag(taglist: &gst::TagList) -> Option<VideoOrientationMethod> {
-        assert_initialized_main_thread!();
-        unsafe {
-            let mut method = mem::MaybeUninit::uninit();
-            let ret = from_glib(ffi::gst_video_orientation_from_tag(
-                taglist.to_glib_none().0,
-                method.as_mut_ptr(),
-            ));
-            if ret {
-                Some(from_glib(method.assume_init()))
-            } else {
-                None
-            }
-        }
-    }
 }
 
 unsafe impl Send for VideoOrientation {}

gstreamer-video/src/enums.rs

@@ -0,0 +1,48 @@
+// Take a look at the license at the top of the repository in the LICENSE file.
+
+#[cfg(any(feature = "v1_16", feature = "dox"))]
+#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_16")))]
+use glib::translate::*;
+
+#[cfg(any(feature = "v1_16", feature = "dox"))]
+#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_16")))]
+use crate::VideoCaptionType;
+#[cfg(any(feature = "v1_20", feature = "dox"))]
+#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
+use crate::VideoOrientationMethod;
+
+#[cfg(any(feature = "v1_16", feature = "dox"))]
+#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_16")))]
+impl VideoCaptionType {
+    #[doc(alias = "gst_video_caption_type_from_caps")]
+    pub fn from_caps(caps: &gst::CapsRef) -> VideoCaptionType {
+        assert_initialized_main_thread!();
+        unsafe { from_glib(ffi::gst_video_caption_type_from_caps(caps.as_ptr())) }
+    }
+}
+
+#[cfg(any(feature = "v1_20", feature = "dox"))]
+#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
+impl VideoOrientationMethod {
+    #[cfg(any(feature = "v1_20", feature = "dox"))]
+    #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
+    #[doc(alias = "gst_video_orientation_from_tag")]
+    pub fn from_tag(taglist: &gst::TagListRef) -> Option<VideoOrientationMethod> {
+        assert_initialized_main_thread!();
+
+        unsafe {
+            use std::mem;
+
+            let mut method = mem::MaybeUninit::uninit();
+            let ret = from_glib(ffi::gst_video_orientation_from_tag(
+                mut_override(taglist.as_ptr()),
+                method.as_mut_ptr(),
+            ));
+            if ret {
+                Some(from_glib(method.assume_init()))
+            } else {
+                None
+            }
+        }
+    }
+}

gstreamer-video/src/lib.rs

@@ -36,6 +36,8 @@ macro_rules! skip_assert_initialized {
 mod auto;
 pub use crate::auto::*;
 
+mod enums;
+
 #[cfg(feature = "serde")]
 mod flag_serde;
 

gstreamer/Gir.toml

@@ -1313,6 +1313,26 @@ final_type = true
     # Use str as return type
     manual = true
 
+    [[object.function]]
+    name = "can_sink_all_caps"
+    # Use &CapsRef
+    manual = true
+
+    [[object.function]]
+    name = "can_src_all_caps"
+    # Use &CapsRef
+    manual = true
+
+    [[object.function]]
+    name = "can_sink_any_caps"
+    # Use &CapsRef
+    manual = true
+
+    [[object.function]]
+    name = "can_src_any_caps"
+    # Use &CapsRef
+    manual = true
+
 [[object]]
 name = "Gst.ElementFactoryListType"
 status = "manual"

gstreamer/src/auto/element_factory.rs

@@ -3,7 +3,6 @@
 // from gst-gir-files (https://gitlab.freedesktop.org/gstreamer/gir-files-rs.git)
 // DO NOT EDIT
 
-use crate::Caps;
 use crate::Object;
 use crate::PluginFeature;
 use crate::URIType;
@@ -19,46 +18,6 @@ glib::wrapper! {
 }
 
 impl ElementFactory {
-    #[doc(alias = "gst_element_factory_can_sink_all_caps")]
-    pub fn can_sink_all_caps(&self, caps: &Caps) -> bool {
-        unsafe {
-            from_glib(ffi::gst_element_factory_can_sink_all_caps(
-                self.to_glib_none().0,
-                caps.to_glib_none().0,
-            ))
-        }
-    }
-
-    #[doc(alias = "gst_element_factory_can_sink_any_caps")]
-    pub fn can_sink_any_caps(&self, caps: &Caps) -> bool {
-        unsafe {
-            from_glib(ffi::gst_element_factory_can_sink_any_caps(
-                self.to_glib_none().0,
-                caps.to_glib_none().0,
-            ))
-        }
-    }
-
-    #[doc(alias = "gst_element_factory_can_src_all_caps")]
-    pub fn can_src_all_caps(&self, caps: &Caps) -> bool {
-        unsafe {
-            from_glib(ffi::gst_element_factory_can_src_all_caps(
-                self.to_glib_none().0,
-                caps.to_glib_none().0,
-            ))
-        }
-    }
-
-    #[doc(alias = "gst_element_factory_can_src_any_caps")]
-    pub fn can_src_any_caps(&self, caps: &Caps) -> bool {
-        unsafe {
-            from_glib(ffi::gst_element_factory_can_src_any_caps(
-                self.to_glib_none().0,
-                caps.to_glib_none().0,
-            ))
-        }
-    }
-
     #[doc(alias = "gst_element_factory_get_element_type")]
     #[doc(alias = "get_element_type")]
     pub fn element_type(&self) -> glib::types::Type {

gstreamer/src/element_factory.rs

@@ -8,6 +8,7 @@ use crate::ELEMENT_METADATA_KLASS;
 use crate::ELEMENT_METADATA_LONGNAME;
 use std::ffi::CStr;
 
+use crate::CapsRef;
 use crate::Element;
 use crate::ElementFactory;
 use crate::Rank;
@@ -180,6 +181,46 @@ impl ElementFactory {
     pub fn icon_name(&self) -> Option<&str> {
         self.metadata(&ELEMENT_METADATA_ICON_NAME)
     }
+
+    #[doc(alias = "gst_element_factory_can_sink_all_caps")]
+    pub fn can_sink_all_caps(&self, caps: &CapsRef) -> bool {
+        unsafe {
+            from_glib(ffi::gst_element_factory_can_sink_all_caps(
+                self.to_glib_none().0,
+                caps.as_ptr(),
+            ))
+        }
+    }
+
+    #[doc(alias = "gst_element_factory_can_sink_any_caps")]
+    pub fn can_sink_any_caps(&self, caps: &CapsRef) -> bool {
+        unsafe {
+            from_glib(ffi::gst_element_factory_can_sink_any_caps(
+                self.to_glib_none().0,
+                caps.as_ptr(),
+            ))
+        }
+    }
+
+    #[doc(alias = "gst_element_factory_can_src_all_caps")]
+    pub fn can_src_all_caps(&self, caps: &CapsRef) -> bool {
+        unsafe {
+            from_glib(ffi::gst_element_factory_can_src_all_caps(
+                self.to_glib_none().0,
+                caps.as_ptr(),
+            ))
+        }
+    }
+
+    #[doc(alias = "gst_element_factory_can_src_any_caps")]
+    pub fn can_src_any_caps(&self, caps: &CapsRef) -> bool {
+        unsafe {
+            from_glib(ffi::gst_element_factory_can_src_any_caps(
+                self.to_glib_none().0,
+                caps.as_ptr(),
+            ))
+        }
+    }
 }
 
 // rustdoc-stripper-ignore-next

tutorials/src/bin/basic-tutorial-6.rs

@@ -3,7 +3,7 @@ use gst::prelude::*;
 #[path = "../tutorials-common.rs"]
 mod tutorials_common;
 
-fn print_caps(caps: &gst::Caps, prefix: &str) {
+fn print_caps(caps: &gst::CapsRef, prefix: &str) {
     if caps.is_any() {
         println!("{}ANY", prefix);
         return;