From d23d313b392227ae0d72640ef99d48791d1ddbc2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Sat, 11 Apr 2020 20:02:41 +0300
Subject: [PATCH] gstreamer: Add Element::get_current_clock_time() and
 ::get_current_running_time()

This was added in GStreamer 1.18 but we can easily implement it
ourselves here for the time being and for older versions.
---
 gstreamer/src/element.rs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/gstreamer/src/element.rs b/gstreamer/src/element.rs
index ef34e9426..d0447fbfe 100644
--- a/gstreamer/src/element.rs
+++ b/gstreamer/src/element.rs
@@ -262,6 +262,9 @@ pub trait ElementExtManual: 'static {
     where
         F: FnOnce(&Self) -> T + Send + 'static,
         T: Send + 'static;
+
+    fn get_current_running_time(&self) -> ::ClockTime;
+    fn get_current_clock_time(&self) -> ::ClockTime;
 }
 
 impl<O: IsA<Element>> ElementExtManual for O {
@@ -804,6 +807,26 @@ impl<O: IsA<Element>> ElementExtManual for O {
 
         Box::pin(receiver.map(|res| res.expect("sender dropped")))
     }
+
+    fn get_current_running_time(&self) -> ::ClockTime {
+        use ElementExt;
+
+        let base_time = self.get_base_time();
+        let clock_time = self.get_current_clock_time();
+
+        clock_time - base_time
+    }
+
+    fn get_current_clock_time(&self) -> ::ClockTime {
+        use ClockExt;
+        use ElementExt;
+
+        if let Some(clock) = self.get_clock() {
+            clock.get_time()
+        } else {
+            ::CLOCK_TIME_NONE
+        }
+    }
 }
 
 impl ElementClass {