util/time: add time helpers

src/lib.rs

@@ -13,6 +13,7 @@ pub use util::media;
 pub use util::picture;
 pub use util::color;
 pub use util::chroma;
+pub use util::time;
 pub use util::frame::{self, Frame};
 
 #[cfg(feature = "format")]

src/util/mod.rs

@@ -7,6 +7,7 @@ pub mod color;
 pub mod format;
 pub mod frame;
 pub mod chroma;
+pub mod time;
 
 use std::ffi::CStr;
 use std::str::from_utf8_unchecked;

src/util/time.rs

@@ -0,0 +1,29 @@
+use ffi::*;
+use ::Error;
+
+pub fn current() -> i64 {
+	unsafe {
+		av_gettime() as i64
+	}
+}
+
+pub fn relative() -> i64 {
+	unsafe {
+		av_gettime_relative() as i64
+	}
+}
+
+pub fn is_monotonic() -> bool {
+	unsafe {
+		av_gettime_relative_is_monotonic() != 0
+	}
+}
+
+pub fn sleep(usec: u32) -> Result<(), Error> {
+	unsafe {
+		match av_usleep(usec) {
+			0 => Ok(()),
+			e => Err(Error::from(e))
+		}
+	}
+}