1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/thebes/gfxReusableSharedImageSurfaceWrapper.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,61 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef GFXSHMCOWSURFACEWRAPPER
1.9 +#define GFXSHMCOWSURFACEWRAPPER
1.10 +
1.11 +#include "gfxReusableSurfaceWrapper.h"
1.12 +#include "mozilla/RefPtr.h"
1.13 +
1.14 +class gfxSharedImageSurface;
1.15 +
1.16 +namespace mozilla {
1.17 +namespace ipc {
1.18 +class Shmem;
1.19 +}
1.20 +namespace layers {
1.21 +class ISurfaceAllocator;
1.22 +}
1.23 +}
1.24 +
1.25 +/**
1.26 + * A cross-process capable implementation of gfxReusableSurfaceWrapper based
1.27 + * on gfxSharedImageSurface.
1.28 + */
1.29 +class gfxReusableSharedImageSurfaceWrapper : public gfxReusableSurfaceWrapper {
1.30 +public:
1.31 + gfxReusableSharedImageSurfaceWrapper(mozilla::layers::ISurfaceAllocator* aAllocator,
1.32 + gfxSharedImageSurface* aSurface);
1.33 + ~gfxReusableSharedImageSurfaceWrapper();
1.34 +
1.35 + const unsigned char* GetReadOnlyData() const MOZ_OVERRIDE;
1.36 + gfxImageFormat Format() MOZ_OVERRIDE;
1.37 + gfxReusableSurfaceWrapper* GetWritable(gfxImageSurface** aSurface) MOZ_OVERRIDE;
1.38 + void ReadLock() MOZ_OVERRIDE;
1.39 + void ReadUnlock() MOZ_OVERRIDE;
1.40 +
1.41 + Type GetType()
1.42 + {
1.43 + return TYPE_SHARED_IMAGE;
1.44 + }
1.45 +
1.46 + /**
1.47 + * Returns the shared memory segment that backs the shared image surface.
1.48 + */
1.49 + mozilla::ipc::Shmem& GetShmem();
1.50 +
1.51 + /**
1.52 + * Create a gfxReusableSurfaceWrapper from the shared memory segment of a
1.53 + * gfxSharedImageSurface. A ReadLock must be held, which will be adopted by
1.54 + * the returned gfxReusableSurfaceWrapper.
1.55 + */
1.56 + static already_AddRefed<gfxReusableSharedImageSurfaceWrapper>
1.57 + Open(mozilla::layers::ISurfaceAllocator* aAllocator, const mozilla::ipc::Shmem& aShmem);
1.58 +
1.59 +private:
1.60 + mozilla::RefPtr<mozilla::layers::ISurfaceAllocator> mAllocator;
1.61 + nsRefPtr<gfxSharedImageSurface> mSurface;
1.62 +};
1.63 +
1.64 +#endif // GFXSHMCOWSURFACEWRAPPER
