Xamarin.iOS Category for supporting subtitles in AVPlayerViewController.
On track for improvement:
- Async support
- Styling support with DTCoreText
- A more efficient way of rendering
Usage: Call ShowSubtitles with a remote or local subtitle file:
...
AddChildViewController(controller);
View.AddSubview(controller.View);
controller.View.Frame = View.Frame;
controller.ShowSubtitles(NSUrl.FromString("subtitle url"));
player.Play();I figure out how to create category properties in this project, so this snippet can be useful for reusing in other Xamarin.iOS project that require category properties:
#region "Extension properties"
enum AssociationPolicy
{
Assign = 0,
RetainNonAtomic = 1,
CopyNonAtomic = 3,
Retain = 01401,
Copy = 01403,
}
[DllImport("/usr/lib/libobjc.dylib")]
static extern void objc_setAssociatedObject(
IntPtr pointer, IntPtr key,
IntPtr value, AssociationPolicy policy);
[DllImport("/usr/lib/libobjc.dylib")]
static extern IntPtr objc_getAssociatedObject(
IntPtr pointer, IntPtr key);
private static T GetProperty<T>(
this AVPlayerViewController controller,
NSString propertyKey) where T : NSObject
{
var pointer = objc_getAssociatedObject(
controller.Handle,
propertyKey.Handle
);
return Runtime.GetNSObject<T>(pointer);
}
private static void SetProperty<T>(
this AVPlayerViewController controller,
NSString propertyKey,
T value,
AssociationPolicy policy) where T : NSObject
{
objc_setAssociatedObject(
controller.Handle,
propertyKey.Handle,
value.Handle,
policy
);
}
#endregion- Based on: AVPlayerViewController-Subtitles
- Subtitle parsing: SubtitlesParser