1 # Copyright (C) 2011 The Android Open Source Project 2 # 3 # Licensed under the Apache License, Version 2.0 (the "License"); 4 # you may not use this file except in compliance with the License. 5 # You may obtain a copy of the License at 6 # 7 # http://www.apache.org/licenses/LICENSE-2.0 8 # 9 # Unless required by applicable law or agreed to in writing, software 10 # distributed under the License is distributed on an "AS IS" BASIS, 11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 # See the License for the specific language governing permissions and 13 # limitations under the License. 14 15 """Script to take a set of frames (PNG files) for a recovery 16 "installing" icon animation and turn it into a base image plus a set 17 of overlays, as needed by the recovery UI code. Run with the names of 18 all the input frames on the command line, in order.""" 19 20 import sys 21 try: 22 import Image 23 except ImportError: 24 print "This script requires the Python Imaging Library to be installed." 25 sys.exit(1) 26 27 # Find the smallest box that contains all the pixels which change 28 # between images. 29 30 print "reading", sys.argv[1] 31 base = Image.open(sys.argv[1]) 32 33 minmini = base.size[0]-1 34 maxmaxi = 0 35 minminj = base.size[1]-1 36 maxmaxj = 0 37 38 for top_name in sys.argv[2:]: 39 print "reading", top_name 40 top = Image.open(top_name) 41 42 assert base.size == top.size 43 44 mini = base.size[0]-1 45 maxi = 0 46 minj = base.size[1]-1 47 maxj = 0 48 49 h, w = base.size 50 for j in range(w): 51 for i in range(h): 52 b = base.getpixel((i,j)) 53 t = top.getpixel((i,j)) 54 if b != t: 55 if i < mini: mini = i 56 if i > maxi: maxi = i 57 if j < minj: minj = j 58 if j > maxj: maxj = j 59 60 minmini = min(minmini, mini) 61 maxmaxi = max(maxmaxi, maxi) 62 minminj = min(minminj, minj) 63 maxmaxj = max(maxmaxj, maxj) 64 65 w = maxmaxi - minmini + 1 66 h = maxmaxj - minminj + 1 67 68 # Now write out an image containing just that box, for each frame. 69 70 for num, top_name in enumerate(sys.argv[1:]): 71 top = Image.open(top_name) 72 73 out = Image.new("RGB", (w, h)) 74 for i in range(w): 75 for j in range(h): 76 t = top.getpixel((i+minmini, j+minminj)) 77 out.putpixel((i, j), t) 78 79 fn = "icon_installing_overlay%02d.png" % (num+1,) 80 out.save(fn) 81 print "saved", fn 82 83 # Write out the base icon, which is the first frame with that box 84 # blacked out (just to make the file smaller, since it's always 85 # displayed with one of the overlays on top of it). 86 87 for i in range(w): 88 for j in range(h): 89 base.putpixel((i+minmini, j+minminj), (0, 0, 0)) 90 fn = "icon_installing.png" 91 base.save(fn) 92 print "saved", fn 93 94 # The device_ui_init() function needs to tell the recovery UI the 95 # position of the overlay box. 96 97 print 98 print "add this to your device_ui_init() function:" 99 print "-" * 40 100 print " ui_parameters->install_overlay_offset_x = %d;" % (minmini,) 101 print " ui_parameters->install_overlay_offset_y = %d;" % (minminj,) 102 print "-" * 40 103
