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      1 // Copyright 2017 The Chromium OS Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 syntax = "proto3";
      6 
      7 package puffin.metadata;
      8 option optimize_for = LITE_RUNTIME;
      9 
     10 message BitExtent {
     11   uint64 offset = 1;
     12   uint64 length = 2;
     13 }
     14 
     15 message StreamInfo {
     16   repeated BitExtent deflates = 1;
     17   repeated BitExtent puffs = 2;
     18   uint64 puff_length = 3;
     19 }
     20 
     21 message PatchHeader {
     22   int32 version = 1;
     23   StreamInfo src = 2;
     24   StreamInfo dst = 3;
     25   // The bsdiff patch is installed right after this protobuf.
     26 }