system.img镜像转换为system.new.dat + system.transfer.list

android 8.1上面验证，支持所有的android版本，直接放到sdk中执行即可。

 

img2sdat.py

#!/usr/bin/env python

#coding=utf-8

 

import sys

 

if sys.hexversion < 0x02070000:

  print >> sys.stderr, "Python 2.7 or newer is required."

  sys.exit(1)

 

from hashlib import sha1 as sha1

 

import common

import sparse_img

 

OPTIONS = common.OPTIONS

 

try:

    PARTITION_NAME = str(sys.argv[1])

    SYSTEM_IMG = str(sys.argv[2])

    OUTPUT_DIR = str(sys.argv[3])

    OPTIONS.outpath = OUTPUT_DIR

except IndexError:

    print('\nUsage: img2sdat.py <partiton_name> <system_img> <system_new_dir>\n')

    print('  eg:   img2sdat.py system system.img system_new\n')

    print('        <partiton_name>: input partition name')

    print('        <img_name>: input image name')

    print('        <new_dir>: image new dat dir')

    print('        Visit xda thread for more information.\n')

    try:

       input = raw_input

    except NameError: pass

    input('Press ENTER to exit...')

    sys.exit()

 

 

def main(argv):  

  system_tgt = sparse_img.SparseImage(SYSTEM_IMG);

  system_tgt.ResetFileMap()

  system_diff = common.BlockDifference(PARTITION_NAME, system_tgt, src=None, check_first_block=False, version=4)

 

 

if __name__ == '__main__':  

  main(sys.argv[1:])  

目前transfer.list已经最新的支持version=4， system.transfer.list版本进化，这里针对不同的android版本，传入不同的version=1/2/3/4即可

 

对common.py打patch

diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py

index 22d95a9..4b981e3 100644

--- a/tools/releasetools/common.py

+++ b/tools/releasetools/common.py

@@ -1406,6 +1406,12 @@ class BlockDifference(object):

     b = blockimgdiff.BlockImageDiff(tgt, src, threads=OPTIONS.worker_threads,

                                     version=self.version,

                                     disable_imgdiff=self.disable_imgdiff)

+

+    self.path = os.path.join(OPTIONS.outpath, partition)

+    print (self.path)

+    b.Compute(self.path)

+    return

+

     tmpdir = tempfile.mkdtemp()

     OPTIONS.tempfiles.append(tmpdir)

     self.path = os.path.join(tmpdir, partition)

 

然后即可在android的根目录下面执行如下命令：

./build/tools/releasetools/img2sdat.py  system out/target/product/xxxx/system.img out/target/product/xxxx/sdat/

Total of 475136 4096-byte output blocks in 2302 input chunks.

Finding transfers...

Generating digraph...

Finding vertex sequence...

Reversing backward edges...

  0/0 dependencies (0.00%) were violated; 0 source blocks stashed.

Improving vertex order...

Reticulating splines...

940847104  940847104 (100.00%)     new __DATA 0-32765 32768-32769 32889-32890 65536-65537 66033-98301 98304-98305 98425-98426 98922-131070 131072-131073 131569-151714 163840-163841 163961-163962 164458-196605 196608-196609 229376-229377 229497-229498 229994-262141 262144-262145 294912-294913 295033-295034 295530-327677 327680-327681 360448-360449 393216-393217 425984-425985 458752-458753 459249-475135

max stashed blocks: 0  (0 bytes), limit: <unknown>

 

即可在目录out/target/product/xxxx/sdat看到有system.new.dat与system.transfer.list文件生成。

命令格式： img2sdat.py 分区名  img路径   new.dat路径

eg：img2sdat.py  system  system.img  system_out_dir