util/color: move color enums to their own module

src/util/color/range.rs

@@ -0,0 +1,29 @@
+use ffi::*;
+
+#[derive(Eq, PartialEq, Clone, Copy, Debug)]
+pub enum Range {
+	Unspecified,
+	MPEG,
+	JPEG,
+}
+
+impl From<AVColorRange> for Range {
+	fn from(value: AVColorRange) -> Self {
+		match value {
+			AVCOL_RANGE_UNSPECIFIED => Range::Unspecified,
+			AVCOL_RANGE_MPEG        => Range::MPEG,
+			AVCOL_RANGE_JPEG        => Range::JPEG,
+			AVCOL_RANGE_NB          => Range::Unspecified
+		}
+	}
+}
+
+impl Into<AVColorRange> for Range {
+	fn into(self) -> AVColorRange {
+		match self {
+			Range::Unspecified => AVCOL_RANGE_UNSPECIFIED,
+			Range::MPEG        => AVCOL_RANGE_MPEG,
+			Range::JPEG        => AVCOL_RANGE_JPEG
+		}
+	}
+}