mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-12-25 06:29:21 +00:00
98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* vim: sw=2 ts=8 et :
|
|
*/
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef GFX_LAYERS_BLOBSURFACE_H
|
|
#define GFX_LAYERS_BLOBSURFACE_H
|
|
|
|
#include <stdint.h> // for uint8_t, uint32_t
|
|
#include "mozilla/Attributes.h" // for MOZ_STACK_CLASS
|
|
#include "mozilla/RefPtr.h" // for already_AddRefed
|
|
#include "mozilla/gfx/Point.h" // for IntSize
|
|
#include "mozilla/gfx/Types.h" // for SurfaceFormat
|
|
|
|
namespace mozilla {
|
|
namespace gfx {
|
|
class DataSourceSurface;
|
|
class DrawTarget;
|
|
} // namespace gfx
|
|
} // namespace mozilla
|
|
|
|
namespace mozilla {
|
|
namespace layers {
|
|
|
|
class ImageDataSerializerBase
|
|
{
|
|
public:
|
|
bool IsValid() const { return mIsValid; }
|
|
|
|
uint8_t* GetData();
|
|
uint32_t GetStride() const;
|
|
gfx::IntSize GetSize() const;
|
|
gfx::SurfaceFormat GetFormat() const;
|
|
already_AddRefed<gfx::DataSourceSurface> GetAsSurface();
|
|
already_AddRefed<gfx::DrawTarget> GetAsDrawTarget(gfx::BackendType aBackend);
|
|
|
|
static uint32_t ComputeMinBufferSize(gfx::IntSize aSize,
|
|
gfx::SurfaceFormat aFormat);
|
|
|
|
size_t GetBufferSize() const { return mDataSize; }
|
|
|
|
protected:
|
|
|
|
ImageDataSerializerBase(uint8_t* aData, size_t aDataSize)
|
|
: mData(aData)
|
|
, mDataSize(aDataSize)
|
|
, mIsValid(false)
|
|
{}
|
|
|
|
void Validate();
|
|
|
|
uint8_t* mData;
|
|
size_t mDataSize;
|
|
bool mIsValid;
|
|
};
|
|
|
|
/**
|
|
* A facility to serialize an image into a buffer of memory.
|
|
* This is intended for use with the IPC code, in order to copy image data
|
|
* into shared memory.
|
|
* Note that there is a separate serializer class for YCbCr images
|
|
* (see YCbCrImageDataSerializer.h).
|
|
*/
|
|
class MOZ_STACK_CLASS ImageDataSerializer : public ImageDataSerializerBase
|
|
{
|
|
public:
|
|
ImageDataSerializer(uint8_t* aData, size_t aDataSize)
|
|
: ImageDataSerializerBase(aData, aDataSize)
|
|
{
|
|
// a serializer needs to be usable before correct buffer info has been written to it
|
|
mIsValid = !!mData;
|
|
}
|
|
void InitializeBufferInfo(gfx::IntSize aSize,
|
|
gfx::SurfaceFormat aFormat);
|
|
};
|
|
|
|
/**
|
|
* A facility to deserialize image data that has been serialized by an
|
|
* ImageDataSerializer.
|
|
*/
|
|
class MOZ_STACK_CLASS ImageDataDeserializer : public ImageDataSerializerBase
|
|
{
|
|
public:
|
|
ImageDataDeserializer(uint8_t* aData, size_t aDataSize)
|
|
: ImageDataSerializerBase(aData, aDataSize)
|
|
{
|
|
Validate();
|
|
}
|
|
|
|
};
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|
|
|
|
#endif
|