From fb0721770146ce39244f5bc4021a93083d746d25 Mon Sep 17 00:00:00 2001
From: Mark <alnyan@airmail.cc>
Date: Sun, 20 Sep 2020 18:23:53 +0300
Subject: [PATCH] Add TryFrom trait for u32 -> PixelFormat

---
 src/lib.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 21e3433..fbab0a9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,7 @@
 #![no_std]
 
+use core::convert::TryFrom;
+
 const CMDLINE_SIZE: usize = 256;
 
 pub trait LoadProtocol: Sized {
@@ -73,3 +75,15 @@ pub struct ProtoV1 {
 
     pub cmdline:            [u8; CMDLINE_SIZE]
 }
+
+impl TryFrom<u32> for PixelFormat {
+    type Error = ();
+
+    fn try_from(f: u32) -> Result<Self, Self::Error> {
+        match f {
+            0   => Ok(PixelFormat::LfbRgb32),
+            1   => Ok(PixelFormat::LfbBgr32),
+            _   => Err(())
+        }
+    }
+}