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100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
// vim:set ts=4 sts=4 sw=4 et cin:
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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Nokia Corporation code.
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*
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* The Initial Developer of the Original Code is Nokia Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Oleg Romashin <romaxa@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef GFX_SHARED_IMAGESURFACE_H
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#define GFX_SHARED_IMAGESURFACE_H
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#include "gfxASurface.h"
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#include "gfxImageSurface.h"
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#include "mozilla/ipc/SharedMemory.h"
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#include "mozilla/ipc/Shmem.h"
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class THEBES_API gfxSharedImageSurface : public gfxImageSurface {
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public:
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/**
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* Init must be called after ctor
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*/
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gfxSharedImageSurface();
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/**
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* Create shared image from external Shmem
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* Shmem must be initialized by this class
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*/
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gfxSharedImageSurface(const mozilla::ipc::Shmem &aShmem);
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~gfxSharedImageSurface();
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/**
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* Initialize shared image surface
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* @param aAllocator The pointer to protocol class which has AllocShmem method
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* @param aSize The size of the buffer
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* @param aFormat Format of the data
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* @see gfxImageFormat
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*/
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template<class ShmemAllocator>
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bool Init(ShmemAllocator *aAllocator,
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const gfxIntSize& aSize,
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gfxImageFormat aFormat,
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mozilla::ipc::SharedMemory::SharedMemoryType aShmType = mozilla::ipc::SharedMemory::TYPE_BASIC)
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{
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mSize = aSize;
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mFormat = aFormat;
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mStride = ComputeStride();
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if (!aAllocator->AllocShmem(GetAlignedSize(),
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aShmType, &mShmem))
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return false;
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return InitSurface(PR_TRUE);
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}
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/* Gives Shmem data, which can be passed to IPDL interfaces */
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mozilla::ipc::Shmem& GetShmem() { return mShmem; }
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// This can be used for recognizing normal gfxImageSurface as SharedImage
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static cairo_user_data_key_t SHM_KEY;
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private:
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size_t GetAlignedSize();
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bool InitSurface(PRBool aUpdateShmemInfo);
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mozilla::ipc::Shmem mShmem;
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};
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#endif /* GFX_SHARED_IMAGESURFACE_H */
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