gecko/gfx/layers/basic/TextureClientX11.cpp
2014-02-24 11:42:54 +01:00

149 lines
3.7 KiB
C++

/* -*- 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 "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/gfx/2D.h"
#include "gfxXlibSurface.h"
#include "gfx2DGlue.h"
#include "mozilla/X11Util.h"
#include <X11/Xlib.h>
using namespace mozilla;
using namespace mozilla::gfx;
using namespace mozilla::layers;
TextureClientX11::TextureClientX11(SurfaceFormat aFormat, TextureFlags aFlags)
: TextureClient(aFlags),
mFormat(aFormat)
{
MOZ_COUNT_CTOR(TextureClientX11);
}
TextureClientX11::~TextureClientX11()
{
MOZ_COUNT_DTOR(TextureClientX11);
}
bool
TextureClientX11::IsAllocated() const
{
return !!mSurface;
}
bool
TextureClientX11::Lock(OpenMode aMode)
{
// XXX - Turn this into a fatal assertion as soon as Bug 952507 is fixed
NS_WARN_IF_FALSE(!mLocked, "The TextureClient is already Locked!");
mLocked = IsValid() && IsAllocated();
return mLocked;
}
void
TextureClientX11::Unlock()
{
// XXX - Turn this into a fatal assertion as soon as Bug 952507 is fixed
NS_WARN_IF_FALSE(mLocked, "The TextureClient is already Unlocked!");
mLocked = false;
if (mSurface) {
FinishX(DefaultXDisplay());
}
}
bool
TextureClientX11::ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor)
{
MOZ_ASSERT(IsValid());
if (!mSurface) {
return false;
}
aOutDescriptor = SurfaceDescriptorX11(mSurface);
return true;
}
TextureClientData*
TextureClientX11::DropTextureData()
{
MOZ_ASSERT(!(mFlags & TEXTURE_DEALLOCATE_CLIENT));
return nullptr;
}
bool
TextureClientX11::UpdateSurface(gfxASurface* aSurface)
{
MOZ_ASSERT(IsValid());
if (gfxPlatform::GetPlatform()->SupportsAzureContent()) {
RefPtr<DrawTarget> dt = GetAsDrawTarget();
if (!dt) {
return false;
}
RefPtr<SourceSurface> source = gfxPlatform::GetPlatform()->GetSourceSurfaceForSurface(dt, aSurface);
dt->CopySurface(source, IntRect(IntPoint(), GetSize()), IntPoint());
} else {
if (!mSurface) {
return false;
}
nsRefPtr<gfxContext> ctx = new gfxContext(mSurface.get());
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->DrawSurface(aSurface, mSurface->GetSize());
}
return true;
}
already_AddRefed<gfxASurface>
TextureClientX11::GetAsSurface()
{
MOZ_ASSERT(IsValid());
if (!mSurface) {
return nullptr;
}
nsRefPtr<gfxASurface> temp = mSurface.get();
return temp.forget();
}
bool
TextureClientX11::AllocateForSurface(IntSize aSize, TextureAllocationFlags aTextureFlags)
{
MOZ_ASSERT(IsValid());
//MOZ_ASSERT(mFormat != gfx::FORMAT_YUV, "This TextureClient cannot use YCbCr data");
gfxContentType contentType = ContentForFormat(mFormat);
nsRefPtr<gfxASurface> surface = gfxPlatform::GetPlatform()->CreateOffscreenSurface(aSize, contentType);
if (!surface || surface->GetType() != gfxSurfaceType::Xlib) {
NS_ERROR("creating Xlib surface failed!");
return false;
}
mSize = aSize;
mSurface = static_cast<gfxXlibSurface*>(surface.get());
// The host is always responsible for freeing the pixmap.
mSurface->ReleasePixmap();
return true;
}
TemporaryRef<DrawTarget>
TextureClientX11::GetAsDrawTarget()
{
MOZ_ASSERT(IsValid());
if (!mSurface) {
return nullptr;
}
IntSize size = ToIntSize(mSurface->GetSize());
return Factory::CreateDrawTargetForCairoSurface(mSurface->CairoSurface(), size);
}