From e8a00d4639eb4b0ecd86421423c45907c846fac6 Mon Sep 17 00:00:00 2001
From: Scott Lamb <slamb@slamb.org>
Date: Sat, 28 Dec 2019 08:03:05 -0600
Subject: [PATCH] use parking_lot::Once in ffmpeg

I'm getting deprecation warnings for std::sync::ONCE_INIT, and I'm
not sure when std::sync::Once::new() became a const fn. Just as easy to
switch to parking_lot.
---
 Cargo.lock        | 1 +
 ffmpeg/Cargo.toml | 1 +
 ffmpeg/lib.rs     | 4 ++--
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index f375035..c812363 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1100,6 +1100,7 @@ dependencies = [
  "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
diff --git a/ffmpeg/Cargo.toml b/ffmpeg/Cargo.toml
index c94248a..16df0e6 100644
--- a/ffmpeg/Cargo.toml
+++ b/ffmpeg/Cargo.toml
@@ -12,6 +12,7 @@ path = "lib.rs"
 [dependencies]
 libc = "0.2"
 log = { version = "0.4", features = ["release_max_level_info"] }
+parking_lot = { version = "0.9", features = [] }
 
 [build-dependencies]
 cc = "1.0"
diff --git a/ffmpeg/lib.rs b/ffmpeg/lib.rs
index 734e99a..a1fc936 100644
--- a/ffmpeg/lib.rs
+++ b/ffmpeg/lib.rs
@@ -29,13 +29,13 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 use log::info;
+use parking_lot::Once;
 use std::cell::{Ref, RefCell};
 use std::ffi::CStr;
 use std::fmt::{self, Write};
 use std::ptr;
-use std::sync;
 
-static START: sync::Once = sync::ONCE_INIT;
+static START: Once = Once::new();
 
 //#[link(name = "avcodec")]
 extern "C" {