FetchStreamUtils.h

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/* 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/. */

#ifndef _mozilla_dom_fetch_FetchStreamUtils_h

#define _mozilla_dom_fetch_FetchStreamUtils_h

#include "mozilla/AlreadyAddRefed.h"

#include "mozilla/NotNull.h"

#include "mozilla/dom/FetchTypes.h"

#include "nsIInputStream.h"

#include <cstdint>

namespace mozilla {

namespace ipc {

class PBackgroundParent;

namespace dom {

// Convert a ParentToParentStream received over IPC to an nsIInputStream. Can

// only be called in the parent process.

NotNull<nsCOMPtr<nsIInputStream>> ToInputStream(

    const ParentToParentStream& aStream);

// Convert a ParentToChildStream received over IPC to an nsIInputStream. Can

// only be called in a content process.

NotNull<nsCOMPtr<nsIInputStream>> ToInputStream(

    const ParentToChildStream& aStream);

// Serialize an nsIInputStream for IPC inside the parent process. Can only be

// called in the parent process.

ParentToParentStream ToParentToParentStream(

    const NotNull<nsCOMPtr<nsIInputStream>>& aStream, int64_t aStreamSize);

// Serialize an nsIInputStream for IPC from the parent process to a content

// process. Can only be called in the parent process.

ParentToChildStream ToParentToChildStream(

    const NotNull<nsCOMPtr<nsIInputStream>>& aStream, int64_t aStreamSize,

    bool aSerializeAsLazy = true);

// Convert a ParentToParentStream to a ParentToChildStream. Can only be called

// in the parent process.

ParentToChildStream ToParentToChildStream(const ParentToParentStream& aStream,

                                          int64_t aStreamSize);

}  // namespace dom

}  // namespace mozilla

#endif  // _mozilla_dom_fetch_FetchStreamUtils_h