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Output split information for imgdiff when handling large apks

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Add a mandatory option in imgdiff to write the split info (i.e.
patch_size, tgt_size, src_ranges) to file when handling large apks.
Therefore, the caller of imgdiff can create split transfers based on
the info.

Bug: 63542719
Test: unit tests pass
Change-Id: I853d55d1f999fd576474faa81077f7307f4d856d
This commit is contained in:
Tianjie Xu
2017-08-31 18:05:19 -07:00
parent a815d3fb59
commit 82582b4562
3 changed files with 174 additions and 69 deletions
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6
applypatch/include/applypatch/imgdiff_image.h
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@@ -132,6 +132,9 @@ class PatchChunk {
// Update the source start with the new offset within the source range.
void UpdateSourceOffset(const SortedRangeSet& src_range);
// Return the total size (header + data) of the patch.
size_t PatchSize() const;
static bool WritePatchDataToFd(const std::vector<PatchChunk>& patch_chunks, int patch_fd);
private:
@@ -241,7 +244,8 @@ class ZipModeImage : public Image {
static bool GeneratePatches(const std::vector<ZipModeImage>& split_tgt_images,
const std::vector<ZipModeImage>& split_src_images,
const std::vector<SortedRangeSet>& split_src_ranges,
const std::string& patch_name, const std::string& debug_dir);
const std::string& patch_name, const std::string& split_info_file,
const std::string& debug_dir);
// Split the tgt chunks and src chunks based on the size limit.
static bool SplitZipModeImageWithLimit(const ZipModeImage& tgt_image,