From bd3b84cfb6defb8243e9405cbee07207391721ae Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A1s=20Veres-Szentkir=C3=A1lyi?= <vsza@vsza.hu>
Date: Fri, 22 Nov 2013 18:33:39 +0100
Subject: [PATCH] ColorSSTV: load raster data only once

---
 pysstv/color.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pysstv/color.py b/pysstv/color.py
index cc64cfe..7aa20fb 100644
--- a/pysstv/color.py
+++ b/pysstv/color.py
@@ -9,9 +9,12 @@ from itertools import chain
 RED, GREEN, BLUE = range(3)
 
 class ColorSSTV(GrayscaleSSTV):
+    def on_init(self):
+        self.pixels = self.image.load()
+
     def encode_line(self, line):
         msec_pixel = self.SCAN / self.WIDTH
-        image = self.image.load()
+        image = self.pixels
         for index in self.COLOR_SEQ:
             for item in self.before_channel(index):
                 yield item