103 lines
2.8 KiB
Python
103 lines
2.8 KiB
Python
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# Copyright (C) 2011 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Script to take a set of frames (PNG files) for a recovery
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"installing" icon animation and turn it into a base image plus a set
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of overlays, as needed by the recovery UI code. Run with the names of
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all the input frames on the command line, in order."""
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import sys
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try:
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import Image
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except ImportError:
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print "This script requires the Python Imaging Library to be installed."
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sys.exit(1)
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# Find the smallest box that contains all the pixels which change
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# between images.
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print "reading", sys.argv[1]
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base = Image.open(sys.argv[1])
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minmini = base.size[0]-1
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maxmaxi = 0
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minminj = base.size[1]-1
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maxmaxj = 0
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for top_name in sys.argv[2:]:
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print "reading", top_name
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top = Image.open(top_name)
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assert base.size == top.size
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mini = base.size[0]-1
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maxi = 0
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minj = base.size[1]-1
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maxj = 0
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h, w = base.size
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for j in range(w):
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for i in range(h):
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b = base.getpixel((i,j))
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t = top.getpixel((i,j))
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if b != t:
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if i < mini: mini = i
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if i > maxi: maxi = i
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if j < minj: minj = j
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if j > maxj: maxj = j
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minmini = min(minmini, mini)
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maxmaxi = max(maxmaxi, maxi)
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minminj = min(minminj, minj)
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maxmaxj = max(maxmaxj, maxj)
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w = maxmaxi - minmini + 1
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h = maxmaxj - minminj + 1
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# Now write out an image containing just that box, for each frame.
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for num, top_name in enumerate(sys.argv[1:]):
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top = Image.open(top_name)
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out = Image.new("RGB", (w, h))
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for i in range(w):
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for j in range(h):
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t = top.getpixel((i+minmini, j+minminj))
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out.putpixel((i, j), t)
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fn = "icon_installing_overlay%02d.png" % (num+1,)
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out.save(fn)
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print "saved", fn
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# Write out the base icon, which is the first frame with that box
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# blacked out (just to make the file smaller, since it's always
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# displayed with one of the overlays on top of it).
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for i in range(w):
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for j in range(h):
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base.putpixel((i+minmini, j+minminj), (0, 0, 0))
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fn = "icon_installing.png"
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base.save(fn)
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print "saved", fn
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# The device_ui_init() function needs to tell the recovery UI the
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# position of the overlay box.
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print
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print "add this to your device_ui_init() function:"
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print "-" * 40
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print " ui_parameters->install_overlay_offset_x = %d;" % (minmini,)
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print " ui_parameters->install_overlay_offset_y = %d;" % (minminj,)
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print "-" * 40
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