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1236fa8191
Backed out changeset e7278af0a484 (bug 1200595) Backed out changeset c13228f84d85 (bug 1200595) Backed out changeset 4b88e8a3d8af (bug 1200595) Backed out changeset e55376bd2cf8 (bug 1200595) Backed out changeset 9c27c8e2c021 (bug 1200595) Backed out changeset a369a2983ceb (bug 1200595) Backed out changeset 09e71ba15ea8 (bug 1200595) Backed out changeset b555b130d439 (bug 1200595) Backed out changeset 6819f6d82287 (bug 1200595) Backed out changeset a8cdfbf443d8 (bug 1200595) Backed out changeset 0092c9d7a86b (bug 1200595) Backed out changeset 6dc38a1e6073 (bug 1200595) Backed out changeset fe2164aa1468 (bug 1200595)
96 lines
2.6 KiB
C++
96 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 already_AddRefed
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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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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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already_AddRefed<gfx::DataSourceSurface> GetAsSurface();
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already_AddRefed<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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