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ce468943a9
Add an implementation of gfxReusableSurfaceWrapper based on gfxImageSurface and use it on Android to avoid the overhead of shared memory.
62 lines
1.5 KiB
C++
62 lines
1.5 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "gfxReusableImageSurfaceWrapper.h"
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#include "gfxImageSurface.h"
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gfxReusableImageSurfaceWrapper::gfxReusableImageSurfaceWrapper(gfxImageSurface* aSurface)
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: mSurface(aSurface)
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{
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MOZ_COUNT_CTOR(gfxReusableImageSurfaceWrapper);
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}
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gfxReusableImageSurfaceWrapper::~gfxReusableImageSurfaceWrapper()
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{
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MOZ_COUNT_DTOR(gfxReusableImageSurfaceWrapper);
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}
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void
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gfxReusableImageSurfaceWrapper::ReadLock()
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{
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NS_CheckThreadSafe(_mOwningThread.GetThread(), "Only the owner thread can call ReadLock");
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AddRef();
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}
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void
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gfxReusableImageSurfaceWrapper::ReadUnlock()
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{
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Release();
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}
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gfxReusableSurfaceWrapper*
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gfxReusableImageSurfaceWrapper::GetWritable(gfxImageSurface** aSurface)
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{
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NS_CheckThreadSafe(_mOwningThread.GetThread(), "Only the owner thread can call GetWritable");
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if (mRefCnt == 1) {
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*aSurface = mSurface;
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return this;
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}
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// Something else is reading the surface, copy it
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gfxImageSurface* copySurface = new gfxImageSurface(mSurface->GetSize(), mSurface->Format(), false);
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copySurface->CopyFrom(mSurface);
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*aSurface = copySurface;
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return new gfxReusableImageSurfaceWrapper(copySurface);
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}
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const unsigned char*
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gfxReusableImageSurfaceWrapper::GetReadOnlyData() const
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{
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return mSurface->Data();
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}
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gfxASurface::gfxImageFormat
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gfxReusableImageSurfaceWrapper::Format()
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{
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return mSurface->Format();
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}
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