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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "mozilla/layers/TextureClientX11.h"
#include "mozilla/layers/CompositableClient.h"
#include "mozilla/layers/CompositableForwarder.h"
#include "mozilla/layers/ISurfaceAllocator.h"
#include "mozilla/layers/ShadowLayerUtilsX11.h"
#include "mozilla/layers/TextureForwarder.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Logging.h"
#include "gfx2DGlue.h"
#include "gfxPlatform.h"
#include "gfxXlibSurface.h"
#include "mozilla/X11Util.h"
#include <X11/Xlib.h>
using namespace mozilla;
using namespace mozilla::gfx;
namespace mozilla::layers {
X11TextureData::X11TextureData(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
bool aClientDeallocation, bool aIsCrossProcess,
gfxXlibSurface* aSurface)
: mSize(aSize),
mFormat(aFormat),
mSurface(aSurface),
mClientDeallocation(aClientDeallocation),
mIsCrossProcess(aIsCrossProcess) {
MOZ_ASSERT(mSurface);
}
bool X11TextureData::Lock(OpenMode aMode) { return true; }
void X11TextureData::Unlock() {
if (mSurface && mIsCrossProcess) {
FinishX(DefaultXDisplay());
}
}
void X11TextureData::FillInfo(TextureData::Info& aInfo) const {
aInfo.size = mSize;
aInfo.format = mFormat;
aInfo.supportsMoz2D = true;
aInfo.hasIntermediateBuffer = false;
aInfo.hasSynchronization = false;
aInfo.canExposeMappedData = false;
}
bool X11TextureData::Serialize(SurfaceDescriptor& aOutDescriptor) {
MOZ_ASSERT(mSurface);
if (!mSurface) {
return false;
}
if (!mClientDeallocation) {
// Pass to the host the responsibility of freeing the pixmap. ReleasePixmap
// means the underlying pixmap will not be deallocated in mSurface's
// destructor. ToSurfaceDescriptor is at most called once per TextureClient.
mSurface->ReleasePixmap();
}
aOutDescriptor = SurfaceDescriptorX11(mSurface);
return true;
}
already_AddRefed<gfx::DrawTarget> X11TextureData::BorrowDrawTarget() {
MOZ_ASSERT(mSurface);
if (!mSurface) {
return nullptr;
}
IntSize size = mSurface->GetSize();
RefPtr<gfx::DrawTarget> dt =
Factory::CreateDrawTargetForCairoSurface(mSurface->CairoSurface(), size);
return dt.forget();
}
bool X11TextureData::UpdateFromSurface(gfx::SourceSurface* aSurface) {
RefPtr<DrawTarget> dt = BorrowDrawTarget();
if (!dt) {
return false;
}
dt->CopySurface(aSurface, IntRect(IntPoint(), aSurface->GetSize()),
IntPoint());
return true;
}
void X11TextureData::Deallocate(LayersIPCChannel*) { mSurface = nullptr; }
TextureData* X11TextureData::CreateSimilar(
LayersIPCChannel* aAllocator, LayersBackend aLayersBackend,
TextureFlags aFlags, TextureAllocationFlags aAllocFlags) const {
return X11TextureData::Create(mSize, mFormat, aFlags, aAllocator);
}
X11TextureData* X11TextureData::Create(gfx::IntSize aSize,
gfx::SurfaceFormat aFormat,
TextureFlags aFlags,
LayersIPCChannel* aAllocator) {
MOZ_ASSERT(aSize.width >= 0 && aSize.height >= 0);
if (aSize.width <= 0 || aSize.height <= 0 ||
aSize.width > XLIB_IMAGE_SIDE_SIZE_LIMIT ||
aSize.height > XLIB_IMAGE_SIDE_SIZE_LIMIT) {
gfxDebug() << "Asking for X11 surface of invalid size " << aSize.width
<< "x" << aSize.height;
return nullptr;
}
gfxImageFormat imageFormat = SurfaceFormatToImageFormat(aFormat);
RefPtr<gfxASurface> surface =
gfxPlatform::GetPlatform()->CreateOffscreenSurface(aSize, imageFormat);
if (!surface || surface->GetType() != gfxSurfaceType::Xlib) {
NS_ERROR("creating Xlib surface failed!");
return nullptr;
}
gfxXlibSurface* xlibSurface = static_cast<gfxXlibSurface*>(surface.get());
bool crossProcess = !aAllocator->IsSameProcess();
X11TextureData* texture = new X11TextureData(
aSize, aFormat, !!(aFlags & TextureFlags::DEALLOCATE_CLIENT),
crossProcess, xlibSurface);
if (crossProcess) {
FinishX(DefaultXDisplay());
}
return texture;
}
} // namespace mozilla::layers
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