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tenfourfox/gfx/layers/composite/TextureHost.cpp
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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/. */
#include "TextureHost.h"
#include "CompositableHost.h" // for CompositableHost
#include "LayerScope.h"
#include "LayersLogging.h" // for AppendToString
#include "mozilla/gfx/2D.h" // for DataSourceSurface, Factory
#include "mozilla/ipc/Shmem.h" // for Shmem
#include "mozilla/layers/CompositableTransactionParent.h" // for CompositableParentManager
#include "mozilla/layers/Compositor.h" // for Compositor
#include "mozilla/layers/ISurfaceAllocator.h" // for ISurfaceAllocator
#include "mozilla/layers/ImageDataSerializer.h"
#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor, etc
#include "mozilla/layers/TextureHostOGL.h" // for TextureHostOGL
#include "mozilla/layers/YCbCrImageDataSerializer.h"
#include "nsAString.h"
#include "mozilla/RefPtr.h" // for nsRefPtr
#include "nsPrintfCString.h" // for nsPrintfCString
#include "mozilla/layers/PTextureParent.h"
#include "mozilla/unused.h"
#include <limits>
#include "../opengl/CompositorOGL.h"
#include "gfxPrefs.h"
#include "gfxUtils.h"
#include "IPDLActor.h"
#ifdef MOZ_ENABLE_D3D10_LAYER
#include "../d3d11/CompositorD3D11.h"
#endif
#ifdef MOZ_WIDGET_GONK
#include "../opengl/GrallocTextureClient.h"
#include "../opengl/GrallocTextureHost.h"
#endif
#ifdef MOZ_X11
#include "mozilla/layers/X11TextureHost.h"
#endif
#ifdef XP_MACOSX
#include "../opengl/MacIOSurfaceTextureHostOGL.h"
#endif
#ifdef XP_WIN
#include "mozilla/layers/TextureDIB.h"
#endif
#if 0
#define RECYCLE_LOG(...) printf_stderr(__VA_ARGS__)
#else
#define RECYCLE_LOG(...) do { } while (0)
#endif
namespace mozilla {
namespace layers {
/**
* TextureParent is the host-side IPDL glue between TextureClient and TextureHost.
* It is an IPDL actor just like LayerParent, CompositableParent, etc.
*/
class TextureParent : public ParentActor<PTextureParent>
{
public:
explicit TextureParent(CompositableParentManager* aManager);
~TextureParent();
bool Init(const SurfaceDescriptor& aSharedData,
const LayersBackend& aLayersBackend,
const TextureFlags& aFlags);
void CompositorRecycle();
virtual bool RecvClientRecycle() override;
virtual bool RecvRecycleTexture(const TextureFlags& aTextureFlags) override;
TextureHost* GetTextureHost() { return mTextureHost; }
virtual void Destroy() override;
CompositableParentManager* mCompositableManager;
RefPtr<TextureHost> mWaitForClientRecycle;
RefPtr<TextureHost> mTextureHost;
};
////////////////////////////////////////////////////////////////////////////////
PTextureParent*
TextureHost::CreateIPDLActor(CompositableParentManager* aManager,
const SurfaceDescriptor& aSharedData,
LayersBackend aLayersBackend,
TextureFlags aFlags)
{
if (aSharedData.type() == SurfaceDescriptor::TSurfaceDescriptorMemory &&
!aManager->IsSameProcess())
{
NS_ERROR("A client process is trying to peek at our address space using a MemoryTexture!");
return nullptr;
}
TextureParent* actor = new TextureParent(aManager);
if (!actor->Init(aSharedData, aLayersBackend, aFlags)) {
delete actor;
return nullptr;
}
return actor;
}
// static
bool
TextureHost::DestroyIPDLActor(PTextureParent* actor)
{
delete actor;
return true;
}
// static
bool
TextureHost::SendDeleteIPDLActor(PTextureParent* actor)
{
return PTextureParent::Send__delete__(actor);
}
// static
TextureHost*
TextureHost::AsTextureHost(PTextureParent* actor)
{
if (!actor) {
return nullptr;
}
return static_cast<TextureParent*>(actor)->mTextureHost;
}
PTextureParent*
TextureHost::GetIPDLActor()
{
return mActor;
}
bool
TextureHost::SetReleaseFenceHandle(const FenceHandle& aReleaseFenceHandle)
{
if (!aReleaseFenceHandle.IsValid()) {
// HWC might not provide Fence.
// In this case, HWC implicitly handles buffer's fence.
return false;
}
mReleaseFenceHandle.Merge(aReleaseFenceHandle);
return true;
}
FenceHandle
TextureHost::GetAndResetReleaseFenceHandle()
{
FenceHandle fence;
mReleaseFenceHandle.TransferToAnotherFenceHandle(fence);
return fence;
}
void
TextureHost::SetAcquireFenceHandle(const FenceHandle& aAcquireFenceHandle)
{
mAcquireFenceHandle = aAcquireFenceHandle;
}
FenceHandle
TextureHost::GetAndResetAcquireFenceHandle()
{
RefPtr<FenceHandle::FdObj> fdObj = mAcquireFenceHandle.GetAndResetFdObj();
return FenceHandle(fdObj);
}
// implemented in TextureHostOGL.cpp
already_AddRefed<TextureHost> CreateTextureHostOGL(const SurfaceDescriptor& aDesc,
ISurfaceAllocator* aDeallocator,
TextureFlags aFlags);
// implemented in TextureHostBasic.cpp
already_AddRefed<TextureHost> CreateTextureHostBasic(const SurfaceDescriptor& aDesc,
ISurfaceAllocator* aDeallocator,
TextureFlags aFlags);
// implemented in TextureD3D11.cpp
already_AddRefed<TextureHost> CreateTextureHostD3D11(const SurfaceDescriptor& aDesc,
ISurfaceAllocator* aDeallocator,
TextureFlags aFlags);
// implemented in TextureD3D9.cpp
already_AddRefed<TextureHost> CreateTextureHostD3D9(const SurfaceDescriptor& aDesc,
ISurfaceAllocator* aDeallocator,
TextureFlags aFlags);
already_AddRefed<TextureHost>
TextureHost::Create(const SurfaceDescriptor& aDesc,
ISurfaceAllocator* aDeallocator,
LayersBackend aBackend,
TextureFlags aFlags)
{
switch (aDesc.type()) {
case SurfaceDescriptor::TSurfaceDescriptorShmem:
case SurfaceDescriptor::TSurfaceDescriptorMemory:
case SurfaceDescriptor::TSurfaceDescriptorDIB:
case SurfaceDescriptor::TSurfaceDescriptorFileMapping:
return CreateBackendIndependentTextureHost(aDesc, aDeallocator, aFlags);
case SurfaceDescriptor::TEGLImageDescriptor:
case SurfaceDescriptor::TSurfaceTextureDescriptor:
case SurfaceDescriptor::TSurfaceDescriptorSharedGLTexture:
return CreateTextureHostOGL(aDesc, aDeallocator, aFlags);
case SurfaceDescriptor::TSurfaceDescriptorGralloc:
// case SurfaceDescriptor::TSurfaceDescriptorMacIOSurface: // unpossible
if (aBackend == LayersBackend::LAYERS_OPENGL) {
return CreateTextureHostOGL(aDesc, aDeallocator, aFlags);
} else {
return CreateTextureHostBasic(aDesc, aDeallocator, aFlags);
}
#ifdef MOZ_X11
case SurfaceDescriptor::TSurfaceDescriptorX11: {
const SurfaceDescriptorX11& desc = aDesc.get_SurfaceDescriptorX11();
return MakeAndAddRef<X11TextureHost>(aFlags, desc);
}
#endif
#ifdef XP_WIN
case SurfaceDescriptor::TSurfaceDescriptorD3D9:
return CreateTextureHostD3D9(aDesc, aDeallocator, aFlags);
case SurfaceDescriptor::TSurfaceDescriptorD3D10:
case SurfaceDescriptor::TSurfaceDescriptorDXGIYCbCr:
if (aBackend == LayersBackend::LAYERS_D3D9) {
return CreateTextureHostD3D9(aDesc, aDeallocator, aFlags);
} else {
return CreateTextureHostD3D11(aDesc, aDeallocator, aFlags);
}
#endif
default:
MOZ_CRASH("GFX: Unsupported Surface type host");
}
}
already_AddRefed<TextureHost>
CreateBackendIndependentTextureHost(const SurfaceDescriptor& aDesc,
ISurfaceAllocator* aDeallocator,
TextureFlags aFlags)
{
RefPtr<TextureHost> result;
switch (aDesc.type()) {
case SurfaceDescriptor::TSurfaceDescriptorShmem: {
const SurfaceDescriptorShmem& descriptor = aDesc.get_SurfaceDescriptorShmem();
result = new ShmemTextureHost(descriptor.data(),
descriptor.format(),
aDeallocator,
aFlags);
break;
}
case SurfaceDescriptor::TSurfaceDescriptorMemory: {
const SurfaceDescriptorMemory& descriptor = aDesc.get_SurfaceDescriptorMemory();
result = new MemoryTextureHost(reinterpret_cast<uint8_t*>(descriptor.data()),
descriptor.format(),
aFlags);
break;
}
#ifdef XP_WIN
case SurfaceDescriptor::TSurfaceDescriptorDIB: {
result = new DIBTextureHost(aFlags, aDesc);
break;
}
case SurfaceDescriptor::TSurfaceDescriptorFileMapping: {
result = new TextureHostFileMapping(aFlags, aDesc);
break;
}
#endif
default: {
NS_WARNING("No backend independent TextureHost for this descriptor type");
}
}
return result.forget();
}
void
TextureHost::CompositorRecycle()
{
if (!mActor) {
return;
}
static_cast<TextureParent*>(mActor)->CompositorRecycle();
}
TextureHost::TextureHost(TextureFlags aFlags)
: mActor(nullptr)
, mFlags(aFlags)
, mCompositableCount(0)
{
MOZ_COUNT_CTOR(TextureHost);
}
TextureHost::~TextureHost()
{
MOZ_COUNT_DTOR(TextureHost);
}
void TextureHost::Finalize()
{
if (!(GetFlags() & TextureFlags::DEALLOCATE_CLIENT)) {
DeallocateSharedData();
DeallocateDeviceData();
}
}
void
TextureHost::RecycleTexture(TextureFlags aFlags)
{
MOZ_ASSERT(GetFlags() & TextureFlags::RECYCLE);
MOZ_ASSERT(aFlags & TextureFlags::RECYCLE);
MOZ_ASSERT(!HasRecycleCallback());
mFlags = aFlags;
}
void
TextureHost::PrintInfo(std::stringstream& aStream, const char* aPrefix)
{
aStream << aPrefix;
aStream << nsPrintfCString("%s (0x%p)", Name(), this).get();
// Note: the TextureHost needs to be locked before it is safe to call
// GetSize() and GetFormat() on it.
if (Lock()) {
AppendToString(aStream, GetSize(), " [size=", "]");
AppendToString(aStream, GetFormat(), " [format=", "]");
Unlock();
}
AppendToString(aStream, mFlags, " [flags=", "]");
#ifdef MOZ_DUMP_PAINTING
if (gfxPrefs::LayersDumpTexture() || profiler_feature_active("layersdump")) {
nsAutoCString pfx(aPrefix);
pfx += " ";
aStream << "\n" << pfx.get() << "Surface: ";
RefPtr<gfx::DataSourceSurface> dSurf = GetAsSurface();
if (dSurf) {
aStream << gfxUtils::GetAsLZ4Base64Str(dSurf).get();
}
}
#endif
}
void
TextureHost::Updated(const nsIntRegion* aRegion)
{
LayerScope::ContentChanged(this);
UpdatedInternal(aRegion);
}
TextureSource::TextureSource()
: mCompositableCount(0)
{
MOZ_COUNT_CTOR(TextureSource);
}
TextureSource::~TextureSource()
{
MOZ_COUNT_DTOR(TextureSource);
}
BufferTextureHost::BufferTextureHost(gfx::SurfaceFormat aFormat,
TextureFlags aFlags)
: TextureHost(aFlags)
, mCompositor(nullptr)
, mFormat(aFormat)
, mUpdateSerial(1)
, mLocked(false)
, mNeedsFullUpdate(false)
{
if (aFlags & TextureFlags::COMPONENT_ALPHA) {
// One texture of a component alpha texture pair will start out all white.
// This hack allows us to easily make sure that white will be uploaded.
// See bug 1138934
mNeedsFullUpdate = true;
}
}
void
BufferTextureHost::InitSize()
{
if (mFormat == gfx::SurfaceFormat::YUV) {
YCbCrImageDataDeserializer yuvDeserializer(GetBuffer(), GetBufferSize());
if (yuvDeserializer.IsValid()) {
mSize = yuvDeserializer.GetYSize();
}
} else if (mFormat != gfx::SurfaceFormat::UNKNOWN) {
ImageDataDeserializer deserializer(GetBuffer(), GetBufferSize());
if (deserializer.IsValid()) {
mSize = deserializer.GetSize();
}
}
}
BufferTextureHost::~BufferTextureHost()
{}
void
BufferTextureHost::UpdatedInternal(const nsIntRegion* aRegion)
{
++mUpdateSerial;
// If the last frame wasn't uploaded yet, and we -don't- have a partial update,
// we still need to update the full surface.
if (aRegion && !mNeedsFullUpdate) {
mMaybeUpdatedRegion.OrWith(*aRegion);
} else {
mNeedsFullUpdate = true;
}
if (GetFlags() & TextureFlags::IMMEDIATE_UPLOAD) {
DebugOnly<bool> result = MaybeUpload(!mNeedsFullUpdate ? &mMaybeUpdatedRegion : nullptr);
NS_WARN_IF_FALSE(result, "Failed to upload a texture");
}
}
void
BufferTextureHost::SetCompositor(Compositor* aCompositor)
{
MOZ_ASSERT(aCompositor);
if (mCompositor == aCompositor) {
return;
}
RefPtr<TextureSource> it = mFirstSource;
while (it) {
it->SetCompositor(aCompositor);
it = it->GetNextSibling();
}
mFirstSource = nullptr;
mCompositor = aCompositor;
}
void
BufferTextureHost::DeallocateDeviceData()
{
RefPtr<TextureSource> it = mFirstSource;
while (it) {
it->DeallocateDeviceData();
it = it->GetNextSibling();
}
}
bool
BufferTextureHost::Lock()
{
MOZ_ASSERT(!mLocked);
if (!MaybeUpload(!mNeedsFullUpdate ? &mMaybeUpdatedRegion : nullptr)) {
return false;
}
mLocked = !!mFirstSource;
return mLocked;
}
void
BufferTextureHost::Unlock()
{
MOZ_ASSERT(mLocked);
mLocked = false;
}
bool
BufferTextureHost::BindTextureSource(CompositableTextureSourceRef& aTexture)
{
MOZ_ASSERT(mLocked);
MOZ_ASSERT(mFirstSource);
aTexture = mFirstSource;
return !!aTexture;
}
gfx::SurfaceFormat
BufferTextureHost::GetFormat() const
{
// mFormat is the format of the data that we share with the content process.
// GetFormat, on the other hand, expects the format that we present to the
// Compositor (it is used to choose the effect type).
// if the compositor does not support YCbCr effects, we give it a RGBX texture
// instead (see BufferTextureHost::Upload)
if (mFormat == gfx::SurfaceFormat::YUV &&
mCompositor &&
!mCompositor->SupportsEffect(EffectTypes::YCBCR)) {
return gfx::SurfaceFormat::R8G8B8X8;
}
return mFormat;
}
bool
BufferTextureHost::MaybeUpload(nsIntRegion *aRegion)
{
if (mFirstSource && mFirstSource->GetUpdateSerial() == mUpdateSerial) {
return true;
}
if (!Upload(aRegion)) {
return false;
}
// We no longer have an invalid region.
mNeedsFullUpdate = false;
mMaybeUpdatedRegion.SetEmpty();
// If upload returns true we know mFirstSource is not null
mFirstSource->SetUpdateSerial(mUpdateSerial);
return true;
}
bool
BufferTextureHost::Upload(nsIntRegion *aRegion)
{
if (!GetBuffer()) {
// We don't have a buffer; a possible cause is that the IPDL actor
// is already dead. This inevitably happens as IPDL actors can die
// at any time, so we want to silently return in this case.
// another possible cause is that IPDL failed to map the shmem when
// deserializing it.
return false;
}
if (!mCompositor) {
// This can happen if we send textures to a compositable that isn't yet
// attached to a layer.
return false;
}
if (mFormat == gfx::SurfaceFormat::UNKNOWN) {
NS_WARNING("BufferTextureHost: unsupported format!");
return false;
} else if (mFormat == gfx::SurfaceFormat::YUV) {
YCbCrImageDataDeserializer yuvDeserializer(GetBuffer(), GetBufferSize());
MOZ_ASSERT(yuvDeserializer.IsValid());
if (!mCompositor->SupportsEffect(EffectTypes::YCBCR)) {
RefPtr<gfx::DataSourceSurface> surf = yuvDeserializer.ToDataSourceSurface();
if (NS_WARN_IF(!surf)) {
return false;
}
if (!mFirstSource) {
mFirstSource = mCompositor->CreateDataTextureSource(mFlags);
}
mFirstSource->Update(surf, aRegion);
return true;
}
RefPtr<DataTextureSource> srcY;
RefPtr<DataTextureSource> srcU;
RefPtr<DataTextureSource> srcV;
if (!mFirstSource) {
// We don't support BigImages for YCbCr compositing.
srcY = mCompositor->CreateDataTextureSource(mFlags|TextureFlags::DISALLOW_BIGIMAGE);
srcU = mCompositor->CreateDataTextureSource(mFlags|TextureFlags::DISALLOW_BIGIMAGE);
srcV = mCompositor->CreateDataTextureSource(mFlags|TextureFlags::DISALLOW_BIGIMAGE);
mFirstSource = srcY;
srcY->SetNextSibling(srcU);
srcU->SetNextSibling(srcV);
} else {
// mFormat never changes so if this was created as a YCbCr host and already
// contains a source it should already have 3 sources.
// BufferTextureHost only uses DataTextureSources so it is safe to assume
// all 3 sources are DataTextureSource.
MOZ_ASSERT(mFirstSource->GetNextSibling());
MOZ_ASSERT(mFirstSource->GetNextSibling()->GetNextSibling());
srcY = mFirstSource;
srcU = mFirstSource->GetNextSibling()->AsDataTextureSource();
srcV = mFirstSource->GetNextSibling()->GetNextSibling()->AsDataTextureSource();
}
RefPtr<gfx::DataSourceSurface> tempY =
gfx::Factory::CreateWrappingDataSourceSurface(yuvDeserializer.GetYData(),
yuvDeserializer.GetYStride(),
yuvDeserializer.GetYSize(),
gfx::SurfaceFormat::A8);
RefPtr<gfx::DataSourceSurface> tempCb =
gfx::Factory::CreateWrappingDataSourceSurface(yuvDeserializer.GetCbData(),
yuvDeserializer.GetCbCrStride(),
yuvDeserializer.GetCbCrSize(),
gfx::SurfaceFormat::A8);
RefPtr<gfx::DataSourceSurface> tempCr =
gfx::Factory::CreateWrappingDataSourceSurface(yuvDeserializer.GetCrData(),
yuvDeserializer.GetCbCrStride(),
yuvDeserializer.GetCbCrSize(),
gfx::SurfaceFormat::A8);
// We don't support partial updates for Y U V textures
NS_ASSERTION(!aRegion, "Unsupported partial updates for YCbCr textures");
if (!tempY ||
!tempCb ||
!tempCr ||
!srcY->Update(tempY) ||
!srcU->Update(tempCb) ||
!srcV->Update(tempCr)) {
NS_WARNING("failed to update the DataTextureSource");
return false;
}
} else {
// non-YCbCr case
nsIntRegion* regionToUpdate = aRegion;
if (!mFirstSource) {
mFirstSource = mCompositor->CreateDataTextureSource(mFlags);
if (mFlags & TextureFlags::COMPONENT_ALPHA) {
// Update the full region the first time for component alpha textures.
regionToUpdate = nullptr;
}
}
ImageDataDeserializer deserializer(GetBuffer(), GetBufferSize());
if (!deserializer.IsValid()) {
NS_ERROR("Failed to deserialize image!");
return false;
}
RefPtr<gfx::DataSourceSurface> surf = deserializer.GetAsSurface();
if (!surf) {
return false;
}
if (!mFirstSource->Update(surf.get(), regionToUpdate)) {
NS_WARNING("failed to update the DataTextureSource");
return false;
}
}
MOZ_ASSERT(mFirstSource);
return true;
}
already_AddRefed<gfx::DataSourceSurface>
BufferTextureHost::GetAsSurface()
{
RefPtr<gfx::DataSourceSurface> result;
if (mFormat == gfx::SurfaceFormat::UNKNOWN) {
NS_WARNING("BufferTextureHost: unsupported format!");
return nullptr;
} else if (mFormat == gfx::SurfaceFormat::YUV) {
YCbCrImageDataDeserializer yuvDeserializer(GetBuffer(), GetBufferSize());
if (!yuvDeserializer.IsValid()) {
return nullptr;
}
result = yuvDeserializer.ToDataSourceSurface();
if (NS_WARN_IF(!result)) {
return nullptr;
}
} else {
ImageDataDeserializer deserializer(GetBuffer(), GetBufferSize());
if (!deserializer.IsValid()) {
NS_ERROR("Failed to deserialize image!");
return nullptr;
}
result = deserializer.GetAsSurface();
}
return result.forget();
}
ShmemTextureHost::ShmemTextureHost(const ipc::Shmem& aShmem,
gfx::SurfaceFormat aFormat,
ISurfaceAllocator* aDeallocator,
TextureFlags aFlags)
: BufferTextureHost(aFormat, aFlags)
, mDeallocator(aDeallocator)
{
if (aShmem.IsReadable()) {
mShmem = MakeUnique<ipc::Shmem>(aShmem);
InitSize();
} else {
// This can happen if we failed to map the shmem on this process, perhaps
// because it was big and we didn't have enough contiguous address space
// available, even though we did on the child process.
// As a result this texture will be in an invalid state and Lock will
// always fail.
gfxCriticalError() << "Failed to create a valid ShmemTextureHost";
}
MOZ_COUNT_CTOR(ShmemTextureHost);
}
ShmemTextureHost::~ShmemTextureHost()
{
MOZ_ASSERT(!mShmem || (mFlags & TextureFlags::DEALLOCATE_CLIENT),
"Leaking our buffer");
DeallocateDeviceData();
MOZ_COUNT_DTOR(ShmemTextureHost);
}
void
ShmemTextureHost::DeallocateSharedData()
{
if (mShmem) {
MOZ_ASSERT(mDeallocator,
"Shared memory would leak without a ISurfaceAllocator");
mDeallocator->DeallocShmem(*mShmem);
mShmem = nullptr;
}
}
void
ShmemTextureHost::ForgetSharedData()
{
if (mShmem) {
mShmem = nullptr;
}
}
void
ShmemTextureHost::OnShutdown()
{
mShmem = nullptr;
}
uint8_t* ShmemTextureHost::GetBuffer()
{
return mShmem ? mShmem->get<uint8_t>() : nullptr;
}
size_t ShmemTextureHost::GetBufferSize()
{
return mShmem ? mShmem->Size<uint8_t>() : 0;
}
MemoryTextureHost::MemoryTextureHost(uint8_t* aBuffer,
gfx::SurfaceFormat aFormat,
TextureFlags aFlags)
: BufferTextureHost(aFormat, aFlags)
, mBuffer(aBuffer)
{
MOZ_COUNT_CTOR(MemoryTextureHost);
InitSize();
}
MemoryTextureHost::~MemoryTextureHost()
{
MOZ_ASSERT(!mBuffer || (mFlags & TextureFlags::DEALLOCATE_CLIENT),
"Leaking our buffer");
DeallocateDeviceData();
MOZ_COUNT_DTOR(MemoryTextureHost);
}
void
MemoryTextureHost::DeallocateSharedData()
{
if (mBuffer) {
GfxMemoryImageReporter::WillFree(mBuffer);
}
delete[] mBuffer;
mBuffer = nullptr;
}
void
MemoryTextureHost::ForgetSharedData()
{
mBuffer = nullptr;
}
uint8_t* MemoryTextureHost::GetBuffer()
{
return mBuffer;
}
size_t MemoryTextureHost::GetBufferSize()
{
// MemoryTextureHost just trusts that the buffer size is large enough to read
// anything we need to. That's because MemoryTextureHost has to trust the buffer
// pointer anyway, so the security model here is just that MemoryTexture's
// are restricted to same-process clients.
return std::numeric_limits<size_t>::max();
}
TextureParent::TextureParent(CompositableParentManager* aCompositableManager)
: mCompositableManager(aCompositableManager)
{
MOZ_COUNT_CTOR(TextureParent);
}
TextureParent::~TextureParent()
{
MOZ_COUNT_DTOR(TextureParent);
if (mTextureHost) {
mTextureHost->ClearRecycleCallback();
}
}
static void RecycleCallback(TextureHost*, void* aClosure) {
TextureParent* tp = reinterpret_cast<TextureParent*>(aClosure);
tp->CompositorRecycle();
}
void
TextureParent::CompositorRecycle()
{
mTextureHost->ClearRecycleCallback();
if (mTextureHost->GetFlags() & TextureFlags::RECYCLE) {
mozilla::Unused << SendCompositorRecycle();
// Don't forget to prepare for the next reycle
// if TextureClient request it.
mWaitForClientRecycle = mTextureHost;
}
}
bool
TextureParent::RecvClientRecycle()
{
// This will allow the RecycleCallback to be called once the compositor
// releases any external references to TextureHost.
mTextureHost->SetRecycleCallback(RecycleCallback, this);
if (!mWaitForClientRecycle) {
RECYCLE_LOG("Not a recycable tile");
}
mWaitForClientRecycle = nullptr;
return true;
}
bool
TextureParent::Init(const SurfaceDescriptor& aSharedData,
const LayersBackend& aBackend,
const TextureFlags& aFlags)
{
mTextureHost = TextureHost::Create(aSharedData,
mCompositableManager,
aBackend,
aFlags);
if (mTextureHost) {
mTextureHost->mActor = this;
if (aFlags & TextureFlags::RECYCLE) {
mWaitForClientRecycle = mTextureHost;
RECYCLE_LOG("Setup recycling for tile %p\n", this);
}
}
return !!mTextureHost;
}
void
TextureParent::Destroy()
{
if (!mTextureHost) {
return;
}
if (mTextureHost->GetFlags() & TextureFlags::RECYCLE) {
RECYCLE_LOG("clear recycling for tile %p\n", this);
mTextureHost->ClearRecycleCallback();
}
if (mTextureHost->GetFlags() & TextureFlags::DEALLOCATE_CLIENT) {
mTextureHost->ForgetSharedData();
}
// Clear recycle callback.
mTextureHost->ClearRecycleCallback();
mWaitForClientRecycle = nullptr;
mTextureHost->mActor = nullptr;
mTextureHost = nullptr;
}
bool
TextureParent::RecvRecycleTexture(const TextureFlags& aTextureFlags)
{
if (!mTextureHost) {
return true;
}
mTextureHost->RecycleTexture(aTextureFlags);
return true;
}
////////////////////////////////////////////////////////////////////////////////
} // namespace layers
} // namespace mozilla
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