From a7fc967f508069ace7e5a3b981ad846e5c75e419 Mon Sep 17 00:00:00 2001
From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Sat, 10 Jun 2023 12:30:54 +0200
Subject: [PATCH] core/frame: add means for NAVideoBufferPool to grow and
 report its usage

---
 nihav-core/src/frame.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/nihav-core/src/frame.rs b/nihav-core/src/frame.rs
index 61741d7..10db18d 100644
--- a/nihav-core/src/frame.rs
+++ b/nihav-core/src/frame.rs
@@ -746,6 +746,22 @@ impl<T:Copy> NAVideoBufferPool<T> {
     pub fn reset(&mut self) {
         self.pool.clear();
     }
+    /// Returns the number of frames currently in use.
+    pub fn get_num_used(&self) -> usize {
+        self.pool.iter().filter(|el| el.get_num_refs() != 1).count()
+    }
+    /// Adds a manually allocated frame to the pool.
+    pub fn add_frame(&mut self, buf: NAVideoBufferRef<T>) {
+        self.pool.push(buf);
+    }
+    /// Returns current video format (if available).
+    pub fn get_info(&self) -> Option<NAVideoInfo> {
+        if !self.pool.is_empty() {
+            Some(self.pool[0].get_info())
+        } else {
+            None
+        }
+    }
 }
 
 impl NAVideoBufferPool<u8> {
-- 
2.30.2