codec/encoder/decision: add enum

src/codec/encoder/decision.rs

@@ -0,0 +1,31 @@
+use libc::c_int;
+use ffi::*;
+
+#[derive(Eq, PartialEq, Clone, Copy, Debug)]
+pub enum Decision {
+	Simple,
+	Bits,
+	RateDistortion,
+}
+
+impl From<c_int> for Decision {
+	fn from(value: c_int) -> Decision {
+		match value {
+			FF_MB_DECISION_SIMPLE => Decision::Simple,
+			FF_MB_DECISION_BITS   => Decision::Bits,
+			FF_MB_DECISION_RD     => Decision::RateDistortion,
+
+			_ => Decision::Simple,
+		}
+	}
+}
+
+impl Into<c_int> for Decision {
+	fn into(self) -> c_int {
+		match self {
+			Decision::Simple         => FF_MB_DECISION_SIMPLE,
+			Decision::Bits           => FF_MB_DECISION_BITS,
+			Decision::RateDistortion => FF_MB_DECISION_RD,
+		}
+	}
+}

src/codec/encoder/mod.rs

@@ -16,6 +16,9 @@ pub use self::prediction::Prediction;
 pub mod comparison;
 pub use self::comparison::Comparison;
 
+pub mod decision;
+pub use self::decision::Decision;
+
 use std::ffi::CString;
 use std::ptr;
 use std::ops::Deref;