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fde12dd0a6
CLOSED TREE Backed out changeset 147581a518c3 (bug 991028) Backed out changeset e5bacc566e58 (bug 991028) Backed out changeset 6dc852777a4d (bug 991028) Backed out changeset 780bec5571b9 (bug 991028)
99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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/* 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_LAYERS_BLOBSURFACE_H
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#define GFX_LAYERS_BLOBSURFACE_H
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#include <stdint.h> // for uint8_t, uint32_t
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#include "mozilla/Attributes.h" // for MOZ_STACK_CLASS
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#include "mozilla/RefPtr.h" // for TemporaryRef
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#include "mozilla/gfx/Point.h" // for IntSize
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#include "mozilla/gfx/Types.h" // for SurfaceFormat
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class gfxImageSurface;
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namespace mozilla {
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namespace gfx {
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class DataSourceSurface;
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class DrawTarget;
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} // namespace gfx
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} // namespace mozilla
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namespace mozilla {
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namespace layers {
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class ImageDataSerializerBase
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{
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public:
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bool IsValid() const { return mIsValid; }
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uint8_t* GetData();
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uint32_t GetStride() const;
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gfx::IntSize GetSize() const;
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gfx::SurfaceFormat GetFormat() const;
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TemporaryRef<gfx::DataSourceSurface> GetAsSurface();
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TemporaryRef<gfxImageSurface> GetAsThebesSurface();
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TemporaryRef<gfx::DrawTarget> GetAsDrawTarget(gfx::BackendType aBackend);
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static uint32_t ComputeMinBufferSize(gfx::IntSize aSize,
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gfx::SurfaceFormat aFormat);
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protected:
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ImageDataSerializerBase(uint8_t* aData, size_t aDataSize)
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: mData(aData)
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, mDataSize(aDataSize)
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, mIsValid(false)
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{}
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void Validate();
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uint8_t* mData;
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size_t mDataSize;
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bool mIsValid;
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};
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/**
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* A facility to serialize an image into a buffer of memory.
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* This is intended for use with the IPC code, in order to copy image data
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* into shared memory.
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* Note that there is a separate serializer class for YCbCr images
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* (see YCbCrImageDataSerializer.h).
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*/
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class MOZ_STACK_CLASS ImageDataSerializer : public ImageDataSerializerBase
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{
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public:
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ImageDataSerializer(uint8_t* aData, size_t aDataSize)
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: ImageDataSerializerBase(aData, aDataSize)
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{
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// a serializer needs to be usable before correct buffer info has been written to it
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mIsValid = !!mData;
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}
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void InitializeBufferInfo(gfx::IntSize aSize,
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gfx::SurfaceFormat aFormat);
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};
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/**
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* A facility to deserialize image data that has been serialized by an
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* ImageDataSerializer.
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*/
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class MOZ_STACK_CLASS ImageDataDeserializer : public ImageDataSerializerBase
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{
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public:
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ImageDataDeserializer(uint8_t* aData, size_t aDataSize)
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: ImageDataSerializerBase(aData, aDataSize)
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{
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Validate();
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}
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};
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} // namespace layers
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} // namespace mozilla
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#endif
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