mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-20 16:55:40 +00:00
e226046cb8
# ignore-this-changeset Depends on D28954 Differential Revision: https://phabricator.services.mozilla.com/D28956 --HG-- extra : moz-landing-system : lando
51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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 gfx_SharedDIB_h__
|
|
#define gfx_SharedDIB_h__
|
|
|
|
#include "base/shared_memory.h"
|
|
#include "nscore.h"
|
|
|
|
namespace mozilla {
|
|
namespace gfx {
|
|
|
|
class SharedDIB {
|
|
public:
|
|
typedef base::SharedMemoryHandle Handle;
|
|
|
|
static const uint32_t kBytesPerPixel = 4;
|
|
|
|
public:
|
|
SharedDIB();
|
|
~SharedDIB();
|
|
|
|
// Create and allocate a new shared dib.
|
|
nsresult Create(uint32_t aSize);
|
|
|
|
// Destroy or release resources associated with this dib.
|
|
nsresult Close();
|
|
|
|
// Returns true if this object contains a valid dib.
|
|
bool IsValid();
|
|
|
|
// Wrap a new shared dib around allocated shared memory. Note aHandle must
|
|
// point to a memory section large enough to hold a dib of size aSize,
|
|
// otherwise this will fail.
|
|
nsresult Attach(Handle aHandle, uint32_t aSize);
|
|
|
|
// Returns a SharedMemoryHandle suitable for sharing with another process.
|
|
nsresult ShareToProcess(base::ProcessId aTargetPid, Handle* aNewHandle);
|
|
|
|
protected:
|
|
base::SharedMemory* mShMem;
|
|
};
|
|
|
|
} // namespace gfx
|
|
} // namespace mozilla
|
|
|
|
#endif
|