Add location property handling

Cargo.toml

@@ -5,6 +5,7 @@ authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 build = "build.rs"
 
 [dependencies]
+libc = "0.2"
 
 [build-dependencies]
 gcc = "0.3"

src/lib.rs

@@ -1,3 +1,5 @@
 #![crate_type="dylib"]
 
+extern crate libc;
+
 pub mod rsfilesrc;

src/rsfilesrc.c

@@ -4,6 +4,8 @@
 extern void * filesrc_new (void);
 extern void filesrc_drop (void * filesrc);
 extern int filesrc_fill (void * filesrc);
+extern void filesrc_set_location (void * filesrc, const gchar *location);
+extern gchar * filesrc_get_location (void * filesrc);
 
 GST_DEBUG_CATEGORY_STATIC (gst_rsfile_src_debug);
 #define GST_CAT_DEFAULT gst_rsfile_src_debug
@@ -89,7 +91,6 @@ gst_rsfile_src_finalize (GObject * object)
   GstRsfileSrc *src = GST_RSFILE_SRC (object);
 
   filesrc_drop (src->instance);
-  g_free (src->location);
 
   G_OBJECT_CLASS (parent_class)->finalize (object);
 }
@@ -102,9 +103,7 @@ gst_rsfile_src_set_property (GObject * object, guint prop_id,
 
   switch (prop_id) {
     case PROP_LOCATION:
-      if (src->location)
-        g_free (src->location);
-      src->location = g_value_dup_string (value);
+      filesrc_set_location (src->instance, g_value_get_string (value));
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -120,7 +119,7 @@ gst_rsfile_src_get_property (GObject * object, guint prop_id, GValue * value,
 
   switch (prop_id) {
     case PROP_LOCATION:
-      g_value_set_string (value, src->location);
+      g_value_take_string (value, filesrc_get_location (src->instance));
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

src/rsfilesrc.rs

@@ -1,3 +1,7 @@
+use libc::{c_char};
+use std::ffi::{CStr, CString};
+use std::ptr;
+
 #[no_mangle]
 pub extern "C" fn filesrc_new() -> *mut FileSrc {
     let instance = Box::new(FileSrc::new());
@@ -9,12 +13,35 @@ pub extern "C" fn filesrc_drop(ptr: *mut FileSrc) {
     unsafe { Box::from_raw(ptr) };
 }
 
+#[no_mangle]
+pub extern "C" fn filesrc_set_location(ptr: *mut FileSrc, location_ptr: *const c_char) {
+    let filesrc: &mut FileSrc = unsafe { &mut *ptr };
+
+    if location_ptr.is_null() {
+        filesrc.location = None;
+    } else {
+        let location = unsafe { CStr::from_ptr(location_ptr) };
+        filesrc.location = Some(String::from(location.to_str().unwrap()));
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn filesrc_get_location(ptr: *mut FileSrc) -> *mut c_char {
+    let filesrc: &mut FileSrc = unsafe { &mut *ptr };
+
+    match filesrc.location {
+        Some(ref location) =>
+            CString::new(location.clone().into_bytes()).unwrap().into_raw(),
+        None =>
+            ptr::null_mut()
+    }
+}
+
 #[no_mangle]
 pub extern "C" fn filesrc_fill(ptr: *mut FileSrc) {
     let filesrc: &mut FileSrc = unsafe { &mut *ptr };
 
-    println!("fill");
-    filesrc.location = Some(String::from("bla"));
+    println!("fill {:?}", filesrc);
 }
 
 #[derive(Debug)]