dom/fetch/FetchStreamUtils.h

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #ifndef _mozilla_dom_fetch_FetchStreamUtils_h
   6 #define _mozilla_dom_fetch_FetchStreamUtils_h
   7
   8 #include "mozilla/AlreadyAddRefed.h"
   9 #include "mozilla/NotNull.h"
  10 #include "mozilla/dom/FetchTypes.h"
  11
  12 #include "nsIInputStream.h"
  13
  14 #include <cstdint>
  15
  16 namespace mozilla {
  17
  18 namespace ipc {
  19 class PBackgroundParent;
  20 }
  21
  22 namespace dom {
  23
  24 // Convert a ParentToParentStream received over IPC to an nsIInputStream. Can
  25 // only be called in the parent process.
  26 NotNull<nsCOMPtr<nsIInputStream>> ToInputStream(
  27     const ParentToParentStream& aStream);
  28
  29 // Convert a ParentToChildStream received over IPC to an nsIInputStream. Can
  30 // only be called in a content process.
  31 NotNull<nsCOMPtr<nsIInputStream>> ToInputStream(
  32     const ParentToChildStream& aStream);
  33
  34 // Serialize an nsIInputStream for IPC inside the parent process. Can only be
  35 // called in the parent process.
  36 ParentToParentStream ToParentToParentStream(
  37     const NotNull<nsCOMPtr<nsIInputStream>>& aStream, int64_t aStreamSize);
  38
  39 // Serialize an nsIInputStream for IPC from the parent process to a content
  40 // process. Can only be called in the parent process.
  41 ParentToChildStream ToParentToChildStream(
  42     const NotNull<nsCOMPtr<nsIInputStream>>& aStream, int64_t aStreamSize,
  43     bool aSerializeAsLazy = true);
  44
  45 // Convert a ParentToParentStream to a ParentToChildStream. Can only be called
  46 // in the parent process.
  47 ParentToChildStream ToParentToChildStream(const ParentToParentStream& aStream,
  48                                           int64_t aStreamSize);
  49
  50 }  // namespace dom
  51
  52 }  // namespace mozilla
  53
  54 #endif  // _mozilla_dom_fetch_FetchStreamUtils_h