1 #!/usr/bin/env python 2 # Copyright (C) 2014 The Android Open Source Project 3 # 4 # Licensed under the Apache License, Version 2.0 (the "License"); 5 # you may not use this file except in compliance with the License. 6 # You may obtain a copy of the License at 7 # 8 # http://www.apache.org/licenses/LICENSE-2.0 9 # 10 # Unless required by applicable law or agreed to in writing, software 11 # distributed under the License is distributed on an "AS IS" BASIS, 12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 # See the License for the specific language governing permissions and 14 # limitations under the License. 15 16 """ 17 Script to take a set of frames (PNG files) for a recovery animation 18 and turn it into a single output image which contains the input frames 19 interlaced by row. Run with the names of all the input frames on the 20 command line, in order, followed by the name of the output file. 21 """ 22 23 from __future__ import print_function 24 25 import argparse 26 import os.path 27 import sys 28 try: 29 import Image 30 import PngImagePlugin 31 except ImportError: 32 print("This script requires the Python Imaging Library to be installed.") 33 sys.exit(1) 34 35 36 def interlace(output, inputs): 37 frames = [Image.open(fn).convert("RGB") for fn in inputs] 38 assert len(frames) > 0, "Must have at least one input frame." 39 sizes = set() 40 for fr in frames: 41 sizes.add(fr.size) 42 43 assert len(sizes) == 1, "All input images must have the same size." 44 w, h = sizes.pop() 45 N = len(frames) 46 47 out = Image.new("RGB", (w, h*N)) 48 for j in range(h): 49 for i in range(w): 50 for fn, f in enumerate(frames): 51 out.putpixel((i, j*N+fn), f.getpixel((i, j))) 52 53 # When loading this image, the graphics library expects to find a text 54 # chunk that specifies how many frames this animation represents. If 55 # you post-process the output of this script with some kind of 56 # optimizer tool (eg pngcrush or zopflipng) make sure that your 57 # optimizer preserves this text chunk. 58 59 meta = PngImagePlugin.PngInfo() 60 meta.add_text("Frames", str(N)) 61 62 out.save(output, pnginfo=meta) 63 64 65 def deinterlace(output, input): 66 # Truncate the output filename extension if it's '.png'. 67 if os.path.splitext(output)[1].lower() == '.png': 68 output = output[:-4] 69 70 img2 = Image.open(input) 71 print(img2.mode) 72 palette = img2.getpalette() 73 img = img2.convert("RGB") 74 num_frames = int(img.info.get('Frames', 1)) 75 print('Found %d frames in %s.' % (num_frames, input)) 76 assert num_frames > 0, 'Invalid Frames meta.' 77 78 # palette = img.getpalette() 79 print(palette) 80 81 width, height = img.size 82 height /= num_frames 83 for k in range(num_frames): 84 out = Image.new('RGB', (width, height)) 85 out.info = img.info 86 for i in range(width): 87 for j in range(height): 88 out.putpixel((i, j), img.getpixel((i, j * num_frames + k))) 89 # out.putpalette(img.getpalette(), rawmode='RGB') 90 out2 = out.convert(mode='P', palette=palette) 91 #out2 = out 92 print(out2.mode) 93 # out2.putpalette(palette) 94 filename = '%s%02d.png' % (output, k) 95 out2.save(filename) 96 print('Frame %d written to %s.' % (k, filename)) 97 98 99 def main(argv): 100 parser = argparse.ArgumentParser(description='Parse') 101 parser.add_argument('--deinterlace', '-d', action='store_true') 102 parser.add_argument('--output', '-o', required=True) 103 parser.add_argument('input', nargs='+') 104 args = parser.parse_args(argv) 105 106 if args.deinterlace: 107 # args.input is a list, and we only process the first when deinterlacing. 108 deinterlace(args.output, args.input[0]) 109 else: 110 interlace(args.output, args.input) 111 112 113 if __name__ == '__main__': 114 main(sys.argv[1:]) 115
