Use repr(transparent) where it is more correct and get rid of some unneeded repr(C)

examples/src/bin/custom_meta.rs

@@ -19,7 +19,7 @@ mod custom_meta {
     use std::ptr;
 
     // Public Rust type for the custom meta.
-    #[repr(C)]
+    #[repr(transparent)]
     pub struct CustomMeta(imp::CustomMeta);
 
     // Metas must be Send+Sync.

examples/src/examples-common.rs

@@ -4,7 +4,6 @@
 #[cfg(target_os = "macos")]
 mod runloop {
     use std::os::raw::c_void;
-    #[repr(C)]
     pub struct CFRunLoop(*mut c_void);
 
     #[link(name = "foundation", kind = "framework")]

gstreamer-audio/src/audio_meta.rs

@@ -21,7 +21,7 @@ use gst;
 use gst::prelude::*;
 use gst_audio_sys;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct AudioClippingMeta(gst_audio_sys::GstAudioClippingMeta);
 
 unsafe impl Send for AudioClippingMeta {}
@@ -76,7 +76,7 @@ impl fmt::Debug for AudioClippingMeta {
 }
 
 #[cfg(any(feature = "v1_16", feature = "dox"))]
-#[repr(C)]
+#[repr(transparent)]
 pub struct AudioMeta(gst_audio_sys::GstAudioMeta);
 
 #[cfg(any(feature = "v1_16", feature = "dox"))]

gstreamer-audio/src/audio_ring_buffer_spec.rs

@@ -7,7 +7,7 @@ use AudioRingBufferFormatType;
 
 use std::fmt;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct AudioRingBufferSpec(pub(crate) GstAudioRingBufferSpec);
 
 impl AudioRingBufferSpec {

gstreamer-gl/src/gl_sync_meta.rs

@@ -8,7 +8,7 @@ use gst_gl_sys;
 
 use GLContext;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct GLSyncMeta(gst_gl_sys::GstGLSyncMeta);
 
 unsafe impl Send for GLSyncMeta {}

gstreamer-net/src/net_address_meta.rs

@@ -7,7 +7,7 @@ use gst;
 use gst::prelude::*;
 use gst_net_sys;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct NetAddressMeta(gst_net_sys::GstNetAddressMeta);
 
 unsafe impl Send for NetAddressMeta {}

gstreamer-sdp/src/sdp_attribute.rs

@@ -13,7 +13,7 @@ use std::mem;
 use glib::translate::*;
 use gst_sdp_sys;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct SDPAttribute(pub(crate) gst_sdp_sys::GstSDPAttribute);
 
 unsafe impl Send for SDPAttribute {}

gstreamer-sdp/src/sdp_bandwidth.rs

@@ -13,7 +13,7 @@ use std::mem;
 use glib::translate::*;
 use gst_sdp_sys;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct SDPBandwidth(pub(crate) gst_sdp_sys::GstSDPBandwidth);
 
 unsafe impl Send for SDPBandwidth {}

gstreamer-sdp/src/sdp_connection.rs

@@ -13,7 +13,7 @@ use std::mem;
 use glib::translate::*;
 use gst_sdp_sys;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct SDPConnection(pub(crate) gst_sdp_sys::GstSDPConnection);
 
 unsafe impl Send for SDPConnection {}

gstreamer-sdp/src/sdp_key.rs

@@ -11,7 +11,7 @@ use std::fmt;
 
 use gst_sdp_sys;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct SDPKey(gst_sdp_sys::GstSDPKey);
 
 unsafe impl Send for SDPKey {}

gstreamer-sdp/src/sdp_media.rs

@@ -85,7 +85,7 @@ impl fmt::Display for SDPMedia {
     }
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct SDPMediaRef(gst_sdp_sys::GstSDPMedia);
 
 impl fmt::Debug for SDPMediaRef {

gstreamer-sdp/src/sdp_message.rs

@@ -119,7 +119,7 @@ impl SDPMessage {
     }
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct SDPMessageRef(gst_sdp_sys::GstSDPMessage);
 
 impl fmt::Debug for SDPMessageRef {

gstreamer-sdp/src/sdp_origin.rs

@@ -11,7 +11,7 @@ use std::fmt;
 
 use gst_sdp_sys;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct SDPOrigin(pub(crate) gst_sdp_sys::GstSDPOrigin);
 
 unsafe impl Send for SDPOrigin {}

gstreamer-sdp/src/sdp_time.rs

@@ -15,7 +15,7 @@ use std::ptr;
 use glib::translate::*;
 use gst_sdp_sys;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct SDPTime(pub(crate) gst_sdp_sys::GstSDPTime);
 
 unsafe impl Send for SDPTime {}

gstreamer-sdp/src/sdp_zone.rs

@@ -13,7 +13,7 @@ use std::mem;
 use glib::translate::*;
 use gst_sdp_sys;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct SDPZone(pub(crate) gst_sdp_sys::GstSDPZone);
 
 unsafe impl Send for SDPZone {}

gstreamer-video/src/video_meta.rs

@@ -16,7 +16,7 @@ use gst::prelude::*;
 use gst_sys;
 use gst_video_sys;
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct VideoMeta(gst_video_sys::GstVideoMeta);
 
 unsafe impl Send for VideoMeta {}
@@ -176,7 +176,7 @@ impl fmt::Debug for VideoMeta {
     }
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct VideoCropMeta(gst_video_sys::GstVideoCropMeta);
 
 unsafe impl Send for VideoCropMeta {}
@@ -235,7 +235,7 @@ impl fmt::Debug for VideoCropMeta {
     }
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct VideoRegionOfInterestMeta(gst_video_sys::GstVideoRegionOfInterestMeta);
 
 unsafe impl Send for VideoRegionOfInterestMeta {}
@@ -367,7 +367,7 @@ impl fmt::Debug for VideoRegionOfInterestMeta {
     }
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct VideoAffineTransformationMeta(gst_video_sys::GstVideoAffineTransformationMeta);
 
 unsafe impl Send for VideoAffineTransformationMeta {}
@@ -426,7 +426,7 @@ impl fmt::Debug for VideoAffineTransformationMeta {
     }
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct VideoOverlayCompositionMeta(gst_video_sys::GstVideoOverlayCompositionMeta);
 
 unsafe impl Send for VideoOverlayCompositionMeta {}
@@ -482,7 +482,7 @@ impl fmt::Debug for VideoOverlayCompositionMeta {
 }
 
 #[cfg(any(feature = "v1_16", feature = "dox"))]
-#[repr(C)]
+#[repr(transparent)]
 pub struct VideoCaptionMeta(gst_video_sys::GstVideoCaptionMeta);
 
 #[cfg(any(feature = "v1_16", feature = "dox"))]
@@ -544,7 +544,7 @@ impl fmt::Debug for VideoCaptionMeta {
 }
 
 #[cfg(any(feature = "v1_18", feature = "dox"))]
-#[repr(C)]
+#[repr(transparent)]
 pub struct VideoAFDMeta(gst_video_sys::GstVideoAFDMeta);
 
 #[cfg(any(feature = "v1_18", feature = "dox"))]
@@ -608,7 +608,7 @@ impl fmt::Debug for VideoAFDMeta {
 }
 
 #[cfg(any(feature = "v1_18", feature = "dox"))]
-#[repr(C)]
+#[repr(transparent)]
 pub struct VideoBarMeta(gst_video_sys::GstVideoBarMeta);
 
 #[cfg(any(feature = "v1_18", feature = "dox"))]

gstreamer-video/src/video_time_code.rs

@@ -525,7 +525,7 @@ impl From<ValidVideoTimeCode> for VideoTimeCode {
     }
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct VideoTimeCodeMeta(gst_video_sys::GstVideoTimeCodeMeta);
 
 unsafe impl Send for VideoTimeCodeMeta {}

gstreamer/src/caps_features.rs

@@ -251,7 +251,7 @@ impl GlibPtrDefault for CapsFeatures {
     type GlibType = *mut gst_sys::GstCapsFeatures;
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct CapsFeaturesRef(gst_sys::GstCapsFeatures);
 
 impl CapsFeaturesRef {

gstreamer/src/clock.rs

@@ -175,7 +175,7 @@ impl ClockId {
     }
 }
 
-#[repr(C)]
+#[repr(transparent)]
 #[derive(Debug)]
 pub struct AtomicClockReturn(AtomicI32);
 

gstreamer/src/meta.rs

@@ -227,7 +227,7 @@ impl<'a, U> MetaRefMut<'a, Meta, U> {
     }
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct Meta(gst_sys::GstMeta);
 
 unsafe impl Send for Meta {}
@@ -255,7 +255,7 @@ impl fmt::Debug for Meta {
     }
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct ParentBufferMeta(gst_sys::GstParentBufferMeta);
 
 unsafe impl Send for ParentBufferMeta {}
@@ -299,7 +299,7 @@ impl fmt::Debug for ParentBufferMeta {
     }
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct ProtectionMeta(gst_sys::GstProtectionMeta);
 
 unsafe impl Send for ProtectionMeta {}
@@ -342,7 +342,7 @@ impl fmt::Debug for ProtectionMeta {
 }
 
 #[cfg(any(feature = "v1_14", feature = "dox"))]
-#[repr(C)]
+#[repr(transparent)]
 pub struct ReferenceTimestampMeta(gst_sys::GstReferenceTimestampMeta);
 
 #[cfg(any(feature = "v1_14", feature = "dox"))]

gstreamer/src/miniobject.rs

@@ -13,7 +13,7 @@ macro_rules! gst_define_mini_object_wrapper(
             obj: ::std::ptr::NonNull<$ref_name>,
         }
 
-        #[repr(C)]
+        #[repr(transparent)]
         pub struct $ref_name($gst_sys_name);
 
         impl $name {

gstreamer/src/segment.rs

@@ -22,7 +22,7 @@ use SeekFlags;
 use SeekType;
 
 pub type Segment = FormattedSegment<GenericFormattedValue>;
-#[repr(C)]
+#[repr(transparent)]
 pub struct FormattedSegment<T: FormattedValue>(gst_sys::GstSegment, PhantomData<T>);
 
 impl Segment {

gstreamer/src/static_caps.rs

@@ -19,7 +19,6 @@ use std::ffi::CStr;
 use std::fmt;
 use std::ptr;
 
-#[repr(C)]
 pub struct StaticCaps(ptr::NonNull<gst_sys::GstStaticCaps>);
 
 impl StaticCaps {

gstreamer/src/static_pad_template.rs

@@ -20,7 +20,6 @@ use std::ffi::CStr;
 use std::fmt;
 use std::ptr;
 
-#[repr(C)]
 pub struct StaticPadTemplate(ptr::NonNull<gst_sys::GstStaticPadTemplate>);
 
 impl StaticPadTemplate {

gstreamer/src/structure.rs

@@ -319,7 +319,7 @@ impl GlibPtrDefault for Structure {
     type GlibType = *mut gst_sys::GstStructure;
 }
 
-#[repr(C)]
+#[repr(transparent)]
 pub struct StructureRef(gst_sys::GstStructure);
 
 unsafe impl Send for StructureRef {}

gstreamer/src/subclass/plugin_1_12.rs

@@ -23,7 +23,7 @@ macro_rules! gst_plugin_define(
         pub mod plugin_desc {
             use $crate::glib::translate::{from_glib_borrow, ToGlib, from_glib};
 
-            #[repr(C)]
+            #[repr(transparent)]
             pub struct GstPluginDesc($crate::gst_sys::GstPluginDesc);
             unsafe impl Send for GstPluginDesc {}
             unsafe impl Sync for GstPluginDesc {}

gstreamer/src/subclass/plugin_1_14.rs

@@ -23,7 +23,7 @@ macro_rules! gst_plugin_define(
         pub mod plugin_desc {
             use $crate::glib::translate::{from_glib_borrow, ToGlib, from_glib};
 
-            #[repr(C)]
+            #[repr(transparent)]
             pub struct GstPluginDesc($crate::gst_sys::GstPluginDesc);
             unsafe impl Send for GstPluginDesc {}
             unsafe impl Sync for GstPluginDesc {}

gstreamer/src/typefind.rs

@@ -19,7 +19,7 @@ use glib_sys;
 use std::ptr;
 use std::slice;
 
-#[repr(C)]
+#[repr(transparent)]
 #[derive(Debug)]
 pub struct TypeFind(gst_sys::GstTypeFind);
 

gstreamer/src/value_serde.rs

@@ -140,7 +140,7 @@ macro_rules! ser_value (
     );
 );
 
-#[repr(C)]
+#[repr(transparent)]
 pub(crate) struct SendValue(glib::SendValue);
 impl SendValue {
     pub(crate) fn from(send_value: glib::SendValue) -> Self {

tutorials/src/tutorials-common.rs

@@ -4,7 +4,6 @@
 #[cfg(target_os = "macos")]
 mod runloop {
     use std::os::raw::c_void;
-    #[repr(C)]
     pub struct CFRunLoop(*mut c_void);
 
     #[link(name = "foundation", kind = "framework")]