Add GstContext bindings

gstreamer/src/context.rs

@@ -0,0 +1,88 @@
+// Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.com>
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use std::ffi::CStr;
+
+use ffi;
+
+use glib;
+use glib::StaticType;
+use glib::translate::{from_glib, from_glib_full, from_glib_none, ToGlib, ToGlibPtr};
+
+use miniobject::*;
+use StructureRef;
+
+pub type Context = GstRc<ContextRef>;
+pub struct ContextRef(ffi::GstContext);
+
+unsafe impl MiniObject for ContextRef {
+    type GstType = ffi::GstContext;
+}
+
+impl GstRc<ContextRef> {
+    pub fn new(context_type: &str, persistent: bool) -> Self {
+        assert_initialized_main_thread!();
+        unsafe {
+            from_glib_full(ffi::gst_context_new(
+                context_type.to_glib_none().0,
+                persistent.to_glib(),
+            ))
+        }
+    }
+}
+
+impl ContextRef {
+    pub fn get_context_type(&self) -> &str {
+        unsafe {
+            let raw = ffi::gst_context_get_context_type(self.as_mut_ptr());
+            CStr::from_ptr(raw).to_str().unwrap()
+        }
+    }
+
+    pub fn has_context_type(&self, context_type: &str) -> bool {
+        unsafe {
+            from_glib(ffi::gst_context_has_context_type(
+                self.as_mut_ptr(),
+                context_type.to_glib_none().0,
+            ))
+        }
+    }
+
+    pub fn is_persistent(&self) -> bool {
+        unsafe { from_glib(ffi::gst_context_is_persistent(self.as_mut_ptr())) }
+    }
+
+    pub fn get_structure(&self) -> &StructureRef {
+        unsafe { StructureRef::from_glib_borrow(ffi::gst_context_get_structure(self.as_mut_ptr())) }
+    }
+
+    pub fn get_mut_structure(&mut self) -> &mut StructureRef {
+        unsafe {
+            StructureRef::from_glib_borrow_mut(
+                ffi::gst_context_writable_structure(self.as_mut_ptr()),
+            )
+        }
+    }
+}
+
+impl StaticType for ContextRef {
+    fn static_type() -> glib::Type {
+        unsafe { from_glib(ffi::gst_context_get_type()) }
+    }
+}
+
+impl ToOwned for ContextRef {
+    type Owned = GstRc<ContextRef>;
+
+    fn to_owned(&self) -> GstRc<ContextRef> {
+        unsafe { from_glib_none(self.as_ptr()) }
+    }
+}
+
+unsafe impl Sync for ContextRef {}
+unsafe impl Send for ContextRef {}

gstreamer/src/lib.rs

@@ -69,6 +69,8 @@ pub mod query;
 pub use query::{Query, QueryRef, QueryView};
 pub mod event;
 pub use event::{Event, EventRef, EventView};
+pub mod context;
+pub use context::{Context, ContextRef};
 
 mod object;
 mod element;