added gif2bml.py

generators/gif2bml.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+
+import argparse
+import blup.frame
+import blup.output
+import blup.animation
+import blup.writebml
+import PIL.Image
+
+
+DEPTH = 256
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(
+        description='Convert GIF animations to BML.'
+    )
+    parser.add_argument('input_file')
+    parser.add_argument('output_file')
+    args = parser.parse_args()
+
+    gif = PIL.Image.open(args.input_file)
+
+    dim = blup.frame.FrameDimension(gif.width, gif.height, DEPTH, 3)
+    anim = blup.animation.Animation(dim)
+
+    for i in range(gif.n_frames):
+        gif.seek(i)
+        gf = gif.convert('RGB')
+        f = blup.animation.AnimationFrame(dim, gf.info.get('delay', 100))
+        for x in range(dim.width):
+            for y in range(dim.height):
+                f.setPixel(x, y, gf.getpixel((x, y)))
+        anim.addFrame(f)
+
+    blup.writebml.writeBml(anim, args.output_file)