зеркало из https://github.com/mozilla/gecko-dev.git
512 строки
14 KiB
C++
512 строки
14 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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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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#include "TextureDIB.h"
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#include "gfx2DGlue.h"
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#include "mozilla/gfx/DataSurfaceHelpers.h" // For BufferSizeFromDimensions
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#include "mozilla/layers/ISurfaceAllocator.h"
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#include "mozilla/ipc/ProtocolUtils.h"
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namespace mozilla {
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using namespace gfx;
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namespace layers {
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/**
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* Can only be drawn into through Cairo.
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* The coresponding TextureHost depends on the compositor
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*/
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class MemoryDIBTextureData : public DIBTextureData
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{
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public:
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virtual bool Serialize(SurfaceDescriptor& aOutDescriptor) override;
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virtual TextureData*
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CreateSimilar(LayersIPCChannel* aAllocator,
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LayersBackend aLayersBackend,
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TextureFlags aFlags = TextureFlags::DEFAULT,
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TextureAllocationFlags aAllocFlags = ALLOC_DEFAULT) const override;
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virtual bool UpdateFromSurface(gfx::SourceSurface* aSurface) override;
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static
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DIBTextureData* Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat);
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virtual void Deallocate(LayersIPCChannel* aAllocator) override
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{
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mSurface = nullptr;
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}
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MemoryDIBTextureData(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
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gfxWindowsSurface* aSurface)
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: DIBTextureData(aSize, aFormat, aSurface)
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{
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MOZ_COUNT_CTOR(MemoryDIBTextureData);
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}
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virtual ~MemoryDIBTextureData()
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{
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MOZ_COUNT_DTOR(MemoryDIBTextureData);
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}
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};
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/**
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* Can only be drawn into through Cairo.
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* The coresponding TextureHost depends on the compositor
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*/
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class ShmemDIBTextureData : public DIBTextureData
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{
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public:
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virtual bool Serialize(SurfaceDescriptor& aOutDescriptor) override;
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virtual TextureData*
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CreateSimilar(LayersIPCChannel* aAllocator,
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LayersBackend aLayersBackend,
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TextureFlags aFlags = TextureFlags::DEFAULT,
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TextureAllocationFlags aAllocFlags = ALLOC_DEFAULT) const override;
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virtual bool UpdateFromSurface(gfx::SourceSurface* aSurface) override;
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static
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DIBTextureData* Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
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LayersIPCChannel* aAllocator);
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void DeallocateData()
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{
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if (mSurface) {
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::DeleteObject(mBitmap);
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::DeleteDC(mDC);
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::CloseHandle(mFileMapping);
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mBitmap = NULL;
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mDC = NULL;
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mFileMapping = NULL;
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mSurface = nullptr;
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}
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}
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virtual void Deallocate(LayersIPCChannel* aAllocator) override
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{
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DeallocateData();
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}
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ShmemDIBTextureData(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
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gfxWindowsSurface* aSurface,
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HANDLE aFileMapping, HANDLE aHostHandle,
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HDC aDC, HBITMAP aBitmap)
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: DIBTextureData(aSize, aFormat, aSurface)
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, mFileMapping(aFileMapping)
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, mHostHandle(aHostHandle)
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, mDC(aDC)
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, mBitmap(aBitmap)
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{
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MOZ_COUNT_CTOR(ShmemDIBTextureData);
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}
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virtual ~ShmemDIBTextureData()
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{
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MOZ_COUNT_DTOR(ShmemDIBTextureData);
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// The host side has its own references and handles to this data, we can
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// safely clear ours.
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DeallocateData();
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}
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HANDLE mFileMapping;
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HANDLE mHostHandle;
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HDC mDC;
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HBITMAP mBitmap;
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};
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void
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DIBTextureData::FillInfo(TextureData::Info& aInfo) const
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{
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aInfo.size = mSize;
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aInfo.format = mFormat;
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aInfo.hasIntermediateBuffer = true;
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aInfo.hasSynchronization = false;
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aInfo.supportsMoz2D = true;
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aInfo.canExposeMappedData = false;
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}
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already_AddRefed<gfx::DrawTarget>
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DIBTextureData::BorrowDrawTarget()
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{
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return gfxPlatform::GetPlatform()->CreateDrawTargetForSurface(mSurface, mSize);
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}
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DIBTextureData*
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DIBTextureData::Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
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LayersIPCChannel* aAllocator)
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{
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if (!aAllocator) {
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return nullptr;
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}
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if (aFormat == gfx::SurfaceFormat::UNKNOWN) {
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return nullptr;
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}
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if (aAllocator->IsSameProcess()) {
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return MemoryDIBTextureData::Create(aSize, aFormat);
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} else {
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return ShmemDIBTextureData::Create(aSize, aFormat, aAllocator);
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}
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}
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TextureData*
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MemoryDIBTextureData::CreateSimilar(LayersIPCChannel* aAllocator,
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LayersBackend aLayersBackend,
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TextureFlags aFlags,
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TextureAllocationFlags aAllocFlags) const
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{
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if (!aAllocator) {
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return nullptr;
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}
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return MemoryDIBTextureData::Create(mSize, mFormat);
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}
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bool
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MemoryDIBTextureData::Serialize(SurfaceDescriptor& aOutDescriptor)
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{
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MOZ_ASSERT(mSurface);
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// The host will release this ref when it receives the surface descriptor.
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// We AddRef in case we die before the host receives the pointer.
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aOutDescriptor = SurfaceDescriptorDIB(reinterpret_cast<uintptr_t>(mSurface.get()));
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mSurface.get()->AddRef();
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return true;
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}
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DIBTextureData*
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MemoryDIBTextureData::Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat)
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{
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RefPtr<gfxWindowsSurface> surface
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= new gfxWindowsSurface(aSize, SurfaceFormatToImageFormat(aFormat));
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if (!surface || surface->CairoStatus()) {
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NS_WARNING("Could not create DIB surface");
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return nullptr;
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}
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return new MemoryDIBTextureData(aSize, aFormat, surface);
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}
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bool
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MemoryDIBTextureData::UpdateFromSurface(gfx::SourceSurface* aSurface)
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{
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RefPtr<gfxImageSurface> imgSurf = mSurface->GetAsImageSurface();
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RefPtr<DataSourceSurface> srcSurf = aSurface->GetDataSurface();
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if (!srcSurf) {
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gfxCriticalError() << "Failed to GetDataSurface in UpdateFromSurface (DIB).";
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return false;
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}
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DataSourceSurface::MappedSurface sourceMap;
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if (!srcSurf->Map(gfx::DataSourceSurface::READ, &sourceMap)) {
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gfxCriticalError() << "Failed to map source surface for UpdateFromSurface.";
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return false;
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}
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for (int y = 0; y < srcSurf->GetSize().height; y++) {
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memcpy(imgSurf->Data() + imgSurf->Stride() * y,
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sourceMap.mData + sourceMap.mStride * y,
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srcSurf->GetSize().width * BytesPerPixel(srcSurf->GetFormat()));
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}
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srcSurf->Unmap();
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return true;
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}
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TextureData*
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ShmemDIBTextureData::CreateSimilar(LayersIPCChannel* aAllocator,
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LayersBackend aLayersBackend,
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TextureFlags aFlags,
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TextureAllocationFlags aAllocFlags) const
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{
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if (!aAllocator) {
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return nullptr;
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}
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return ShmemDIBTextureData::Create(mSize, mFormat, aAllocator);
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}
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bool
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ShmemDIBTextureData::UpdateFromSurface(gfx::SourceSurface* aSurface)
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{
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RefPtr<DataSourceSurface> srcSurf = aSurface->GetDataSurface();
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if (!srcSurf) {
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gfxCriticalError() << "Failed to GetDataSurface in UpdateFromSurface (DTD).";
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return false;
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}
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DataSourceSurface::MappedSurface sourceMap;
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if (!srcSurf->Map(gfx::DataSourceSurface::READ, &sourceMap)) {
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gfxCriticalError() << "Failed to map source surface for UpdateFromSurface.";
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return false;
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}
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GdiFlush();
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uint32_t stride = mSize.width * BytesPerPixel(mFormat);
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uint8_t* data = (uint8_t*)::MapViewOfFile(mFileMapping, FILE_MAP_WRITE, 0, 0, stride * mSize.height);
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if (!data) {
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gfxCriticalError() << "Failed to map view of file for UpdateFromSurface.";
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srcSurf->Unmap();
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return false;
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}
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for (int y = 0; y < srcSurf->GetSize().height; y++) {
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memcpy(data + stride * y,
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sourceMap.mData + sourceMap.mStride * y,
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srcSurf->GetSize().width * BytesPerPixel(srcSurf->GetFormat()));
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}
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::UnmapViewOfFile(data);
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srcSurf->Unmap();
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return true;
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}
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bool
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ShmemDIBTextureData::Serialize(SurfaceDescriptor& aOutDescriptor)
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{
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if (mFormat == gfx::SurfaceFormat::UNKNOWN) {
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return false;
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}
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::GdiFlush();
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aOutDescriptor = SurfaceDescriptorFileMapping((WindowsHandle)mHostHandle, mFormat, mSize);
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return true;
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}
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DIBTextureData*
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ShmemDIBTextureData::Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
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LayersIPCChannel* aAllocator)
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{
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MOZ_ASSERT(aAllocator->GetParentPid() != base::ProcessId());
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DWORD mapSize = aSize.width * aSize.height * BytesPerPixel(aFormat);
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HANDLE fileMapping = ::CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, mapSize, NULL);
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if (!fileMapping) {
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gfxCriticalError() << "Failed to create memory file mapping for " << mapSize << " bytes.";
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return nullptr;
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}
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BITMAPV4HEADER header;
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memset(&header, 0, sizeof(BITMAPV4HEADER));
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header.bV4Size = sizeof(BITMAPV4HEADER);
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header.bV4Width = aSize.width;
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header.bV4Height = -LONG(aSize.height); // top-to-buttom DIB
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header.bV4Planes = 1;
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header.bV4BitCount = 32;
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header.bV4V4Compression = BI_BITFIELDS;
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header.bV4RedMask = 0x00FF0000;
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header.bV4GreenMask = 0x0000FF00;
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header.bV4BlueMask = 0x000000FF;
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HDC nulldc = ::GetDC(NULL);
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HDC dc = ::CreateCompatibleDC(nulldc);
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::ReleaseDC(nullptr, nulldc);
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if (!dc) {
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::CloseHandle(fileMapping);
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gfxCriticalError() << "Failed to create DC for bitmap.";
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return nullptr;
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}
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void* bits;
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HBITMAP bitmap = ::CreateDIBSection(dc, (BITMAPINFO*)&header,
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DIB_RGB_COLORS, &bits,
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fileMapping, 0);
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if (!bitmap) {
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gfxCriticalError() << "Failed to create DIB section for a bitmap of size "
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<< aSize << " and mapSize " << mapSize;
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::CloseHandle(fileMapping);
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::DeleteDC(dc);
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return nullptr;
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}
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::SelectObject(dc, bitmap);
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RefPtr<gfxWindowsSurface> surface = new gfxWindowsSurface(dc, 0);
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if (surface->CairoStatus())
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{
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::DeleteObject(bitmap);
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::DeleteDC(dc);
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::CloseHandle(fileMapping);
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gfxCriticalError() << "Could not create surface, status: "
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<< surface->CairoStatus();
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return nullptr;
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}
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HANDLE hostHandle = NULL;
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if (!ipc::DuplicateHandle(fileMapping, aAllocator->GetParentPid(),
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&hostHandle, 0, DUPLICATE_SAME_ACCESS)) {
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gfxCriticalError() << "Failed to duplicate handle to parent process for surface.";
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::DeleteObject(bitmap);
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::DeleteDC(dc);
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::CloseHandle(fileMapping);
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return nullptr;
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}
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return new ShmemDIBTextureData(aSize, aFormat, surface,
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fileMapping, hostHandle,
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dc, bitmap);
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}
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bool
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TextureHostDirectUpload::Lock()
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{
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MOZ_ASSERT(!mIsLocked);
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mIsLocked = true;
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return true;
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}
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void
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TextureHostDirectUpload::Unlock()
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{
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MOZ_ASSERT(mIsLocked);
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mIsLocked = false;
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}
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void
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TextureHostDirectUpload::SetTextureSourceProvider(TextureSourceProvider* aProvider)
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{
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mProvider = aProvider;
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}
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void
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TextureHostDirectUpload::DeallocateDeviceData()
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{
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if (mTextureSource) {
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mTextureSource->DeallocateDeviceData();
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}
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}
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bool
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TextureHostDirectUpload::BindTextureSource(CompositableTextureSourceRef& aTexture)
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{
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return AcquireTextureSource(aTexture);
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}
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bool
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TextureHostDirectUpload::AcquireTextureSource(CompositableTextureSourceRef& aTexture)
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{
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if (!mTextureSource) {
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Updated();
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}
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aTexture = mTextureSource;
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return !!aTexture;
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}
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DIBTextureHost::DIBTextureHost(TextureFlags aFlags,
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const SurfaceDescriptorDIB& aDescriptor)
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: TextureHostDirectUpload(aFlags, SurfaceFormat::B8G8R8X8, IntSize())
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{
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// We added an extra ref for transport, so we shouldn't AddRef now.
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mSurface =
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dont_AddRef(reinterpret_cast<gfxWindowsSurface*>(aDescriptor.surface()));
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MOZ_ASSERT(mSurface);
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mSize = mSurface->GetSize();
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mFormat = mSurface->GetSurfaceFormat();
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}
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void
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DIBTextureHost::UpdatedInternal(const nsIntRegion* aRegion)
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{
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if (!mProvider) {
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// This can happen if we send textures to a compositable that isn't yet
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// attached to a layer.
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return;
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}
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if (!mTextureSource) {
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mTextureSource = mProvider->CreateDataTextureSource(mFlags);
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}
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if (mSurface->CairoStatus()) {
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gfxWarning() << "Bad Cairo surface internal update " << mSurface->CairoStatus();
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mTextureSource = nullptr;
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return;
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}
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RefPtr<gfxImageSurface> imgSurf = mSurface->GetAsImageSurface();
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RefPtr<DataSourceSurface> surf = Factory::CreateWrappingDataSourceSurface(imgSurf->Data(), imgSurf->Stride(), mSize, mFormat);
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if (!surf || !mTextureSource->Update(surf, const_cast<nsIntRegion*>(aRegion))) {
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mTextureSource = nullptr;
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}
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ReadUnlock();
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}
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TextureHostFileMapping::TextureHostFileMapping(TextureFlags aFlags,
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const SurfaceDescriptorFileMapping& aDescriptor)
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: TextureHostDirectUpload(aFlags, aDescriptor.format(), aDescriptor.size())
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, mFileMapping((HANDLE)aDescriptor.handle())
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{
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}
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TextureHostFileMapping::~TextureHostFileMapping()
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{
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::CloseHandle(mFileMapping);
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}
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UserDataKey kFileMappingKey;
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static void UnmapFileData(void* aData)
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{
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MOZ_ASSERT(aData);
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::UnmapViewOfFile(aData);
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}
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void
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TextureHostFileMapping::UpdatedInternal(const nsIntRegion* aRegion)
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{
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if (!mProvider) {
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// This can happen if we send textures to a compositable that isn't yet
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// attached to a layer.
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return;
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}
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if (!mTextureSource) {
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mTextureSource = mProvider->CreateDataTextureSource(mFlags);
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}
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uint8_t* data = nullptr;
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int32_t totalBytes = BufferSizeFromDimensions(mSize.width, mSize.height, BytesPerPixel(mFormat));
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if (totalBytes > 0) {
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data = (uint8_t*)::MapViewOfFile(mFileMapping, FILE_MAP_READ, 0, 0, totalBytes);
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}
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if (data) {
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RefPtr<DataSourceSurface> surf = Factory::CreateWrappingDataSourceSurface(data, mSize.width * BytesPerPixel(mFormat), mSize, mFormat);
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if (surf) {
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surf->AddUserData(&kFileMappingKey, data, UnmapFileData);
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if (!mTextureSource->Update(surf, const_cast<nsIntRegion*>(aRegion))) {
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mTextureSource = nullptr;
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}
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} else {
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mTextureSource = nullptr;
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}
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} else {
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mTextureSource = nullptr;
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}
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ReadUnlock();
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}
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}
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}
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