Parse Android boot.img.
The Android boot.img contains kernel, ramdisk and optionally second
stage bootloader. Both kernel and ramdisk could be compressed by gzip.
This patch add a new boot img filesystem to parse boot.img to split
it into |File|s, and find the deflates to utilize puffin, which could
save us several MBs in delta payload size.
As a side effect, generating delta payload for boot partition is much
faster because it is now splitted into smaller files, and we can make
use of multithreading.
Bug: 110494725
Test: generate a delta payload
Change-Id: If41468b37a407fe1b7a70c2b61f632f7df8176d5
diff --git a/Android.mk b/Android.mk
index 80a8afd..171eb0e 100644
--- a/Android.mk
+++ b/Android.mk
@@ -655,6 +655,7 @@
payload_generator/annotated_operation.cc \
payload_generator/blob_file_writer.cc \
payload_generator/block_mapping.cc \
+ payload_generator/boot_img_filesystem.cc \
payload_generator/bzip.cc \
payload_generator/cycle_breaker.cc \
payload_generator/deflate_utils.cc \
@@ -956,6 +957,7 @@
payload_generator/ab_generator_unittest.cc \
payload_generator/blob_file_writer_unittest.cc \
payload_generator/block_mapping_unittest.cc \
+ payload_generator/boot_img_filesystem_unittest.cc \
payload_generator/cycle_breaker_unittest.cc \
payload_generator/deflate_utils_unittest.cc \
payload_generator/delta_diff_utils_unittest.cc \