gecko-dev/dom/ipc/PBlob.ipdl

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

include protocol PBackground;
include protocol PBlobStream;
include protocol PContent;
include protocol PContentBridge;
include protocol PFileDescriptorSet;

include DOMTypes;
include InputStreamParams;

namespace mozilla {
namespace dom {

union ResolveMysteryParams
{
  NormalBlobConstructorParams;
  FileBlobConstructorParams;
};

sync protocol PBlob
{
  manager PBackground or PContent or PContentBridge;
  manages PBlobStream;

both:
  __delete__();

parent:
  PBlobStream(uint64_t begin, uint64_t length);

  ResolveMystery(ResolveMysteryParams params);

  sync BlobStreamSync(uint64_t begin, uint64_t length)
    returns (InputStreamParams params, OptionalFileDescriptorSet fds);

  sync WaitForSliceCreation();

  // Use only for testing!
  sync GetFileId()
    returns (int64_t fileId);

  // Use only for testing!
  sync GetFilePath()
    returns (nsString filePath);

child:
  // This method must be called by the parent when the PBlobParent is fully
  // created in order to release the known blob.
  CreatedFromKnownBlob();
};

} // namespace dom
} // namespace mozilla