update tools for making recovery images

# Copyright (C) 2014 The Android Open Source Project

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#      http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

"""Script to take a set of frames (PNG files) for a recovery animation

and turn it into a single output image which contains the input frames

interlaced by row.  Run with the names of all the input frames on the

command line, in order, followed by the name of the output file."""

import sys

try:

  import Image

  import PngImagePlugin

except ImportError:

  print "This script requires the Python Imaging Library to be installed."

  sys.exit(1)

frames = [Image.open(fn).convert("RGB") for fn in sys.argv[1:-1]]

assert len(frames) > 0, "Must have at least one input frame."

sizes = set()

for fr in frames:

  sizes.add(fr.size)

assert len(sizes) == 1, "All input images must have the same size."

w, h = sizes.pop()

N = len(frames)

out = Image.new("RGB", (w, h*N))

for j in range(h):

  for i in range(w):

    for fn, f in enumerate(frames):

      out.putpixel((i, j*N+fn), f.getpixel((i, j)))

# When loading this image, the graphics library expects to find a text

# chunk that specifies how many frames this animation represents.  If

# you post-process the output of this script with some kind of

# optimizer tool (eg pngcrush or zopflipng) make sure that your

# optimizer preserves this text chunk.

meta = PngImagePlugin.PngInfo()

meta.add_text("Frames", str(N))

out.save(sys.argv[-1], pnginfo=meta)

# Copyright (C) 2011 The Android Open Source Project

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#      http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

"""Script to take a set of frames (PNG files) for a recovery

"installing" icon animation and turn it into a base image plus a set

of overlays, as needed by the recovery UI code.  Run with the names of

all the input frames on the command line, in order."""

import sys

try:

  import Image

except ImportError:

  print "This script requires the Python Imaging Library to be installed."

  sys.exit(1)

# Find the smallest box that contains all the pixels which change

# between images.

print "reading", sys.argv[1]

base = Image.open(sys.argv[1])

minmini = base.size[0]-1

maxmaxi = 0

minminj = base.size[1]-1

maxmaxj = 0

for top_name in sys.argv[2:]:

  print "reading", top_name

  top = Image.open(top_name)

  assert base.size == top.size

  mini = base.size[0]-1

  maxi = 0

  minj = base.size[1]-1

  maxj = 0

  h, w = base.size

  for j in range(w):

    for i in range(h):

      b = base.getpixel((i,j))

      t = top.getpixel((i,j))

      if b != t:

        if i < mini: mini = i

        if i > maxi: maxi = i

        if j < minj: minj = j

        if j > maxj: maxj = j

  minmini = min(minmini, mini)

  maxmaxi = max(maxmaxi, maxi)

  minminj = min(minminj, minj)

  maxmaxj = max(maxmaxj, maxj)

w = maxmaxi - minmini + 1

h = maxmaxj - minminj + 1

# Now write out an image containing just that box, for each frame.

for num, top_name in enumerate(sys.argv[1:]):

  top = Image.open(top_name)

  out = Image.new("RGB", (w, h))

  for i in range(w):

    for j in range(h):

      t = top.getpixel((i+minmini, j+minminj))

      out.putpixel((i, j), t)

  fn = "icon_installing_overlay%02d.png" % (num+1,)

  out.save(fn)

  print "saved", fn

# Write out the base icon, which is the first frame with that box

# blacked out (just to make the file smaller, since it's always

# displayed with one of the overlays on top of it).

for i in range(w):

  for j in range(h):

    base.putpixel((i+minmini, j+minminj), (0, 0, 0))

fn = "icon_installing.png"

base.save(fn)

print "saved", fn

# The device_ui_init() function needs to tell the recovery UI the

# position of the overlay box.

print

print "add this to your device_ui_init() function:"

print "-" * 40

print "  ui_parameters->install_overlay_offset_x = %d;" % (minmini,)

print "  ui_parameters->install_overlay_offset_y = %d;" % (minminj,)

print "-" * 40