gecko/gfx/layers/ipc/ISurfaceAllocator.cpp
Tor Arvid Lund ad062d0b9d Bug 950677 - gfxIntSize -> IntSize in ipc/ directory. r=nical
(Detail: Chose to put an #include for Point.h in a header instead of a
forward declaration because a fwd decl caused an "Already defined" error
and having neither fwd decl or #include caused another compile failure
saying IntSize was undefined)
2013-12-20 11:46:29 -05:00

182 lines
5.9 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/. */
#include "ISurfaceAllocator.h"
#include <sys/types.h> // for int32_t
#include "gfx2DGlue.h" // for IntSize
#include "gfxASurface.h" // for gfxASurface, etc
#include "gfxPlatform.h" // for gfxPlatform, gfxImageFormat
#include "gfxSharedImageSurface.h" // for gfxSharedImageSurface
#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
#include "mozilla/ipc/SharedMemory.h" // for SharedMemory, etc
#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor, etc
#include "ShadowLayerUtils.h"
#include "mozilla/mozalloc.h" // for operator delete[], etc
#include "nsAutoPtr.h" // for nsRefPtr, getter_AddRefs, etc
#include "nsDebug.h" // for NS_RUNTIMEABORT
#include "nsXULAppAPI.h" // for XRE_GetProcessType, etc
#ifdef DEBUG
#include "prenv.h"
#endif
using namespace mozilla::ipc;
namespace mozilla {
namespace layers {
NS_IMPL_ISUPPORTS1(GfxMemoryImageReporter, nsIMemoryReporter)
mozilla::Atomic<int32_t> GfxMemoryImageReporter::sAmount(0);
mozilla::ipc::SharedMemory::SharedMemoryType OptimalShmemType()
{
return mozilla::ipc::SharedMemory::TYPE_BASIC;
}
bool
IsSurfaceDescriptorValid(const SurfaceDescriptor& aSurface)
{
return aSurface.type() != SurfaceDescriptor::T__None &&
aSurface.type() != SurfaceDescriptor::Tnull_t;
}
bool
ISurfaceAllocator::AllocSharedImageSurface(const gfx::IntSize& aSize,
gfxContentType aContent,
gfxSharedImageSurface** aBuffer)
{
mozilla::ipc::SharedMemory::SharedMemoryType shmemType = OptimalShmemType();
gfxImageFormat format = gfxPlatform::GetPlatform()->OptimalFormatForContent(aContent);
nsRefPtr<gfxSharedImageSurface> back =
gfxSharedImageSurface::CreateUnsafe(this,
gfx::ThebesIntSize(aSize),
format,
shmemType);
if (!back)
return false;
*aBuffer = nullptr;
back.swap(*aBuffer);
return true;
}
bool
ISurfaceAllocator::AllocSurfaceDescriptor(const gfx::IntSize& aSize,
gfxContentType aContent,
SurfaceDescriptor* aBuffer)
{
return AllocSurfaceDescriptorWithCaps(aSize, aContent, DEFAULT_BUFFER_CAPS, aBuffer);
}
bool
ISurfaceAllocator::AllocSurfaceDescriptorWithCaps(const gfx::IntSize& aSize,
gfxContentType aContent,
uint32_t aCaps,
SurfaceDescriptor* aBuffer)
{
bool tryPlatformSurface = true;
#ifdef DEBUG
tryPlatformSurface = !PR_GetEnv("MOZ_LAYERS_FORCE_SHMEM_SURFACES");
#endif
if (tryPlatformSurface &&
PlatformAllocSurfaceDescriptor(aSize, aContent, aCaps, aBuffer)) {
return true;
}
if (XRE_GetProcessType() == GeckoProcessType_Default) {
gfxImageFormat format =
gfxPlatform::GetPlatform()->OptimalFormatForContent(aContent);
int32_t stride = gfxASurface::FormatStrideForWidth(format, aSize.width);
uint8_t *data = new (std::nothrow) uint8_t[stride * aSize.height];
if (!data) {
return false;
}
GfxMemoryImageReporter::DidAlloc(data);
#ifdef XP_MACOSX
// Workaround a bug in Quartz where drawing an a8 surface to another a8
// surface with OPERATOR_SOURCE still requires the destination to be clear.
if (format == gfxImageFormatA8) {
memset(data, 0, stride * aSize.height);
}
#endif
*aBuffer = MemoryImage((uintptr_t)data, aSize, stride, format);
return true;
}
nsRefPtr<gfxSharedImageSurface> buffer;
if (!AllocSharedImageSurface(aSize, aContent,
getter_AddRefs(buffer))) {
return false;
}
*aBuffer = buffer->GetShmem();
return true;
}
/* static */ bool
ISurfaceAllocator::IsShmem(SurfaceDescriptor* aSurface)
{
return aSurface && (aSurface->type() == SurfaceDescriptor::TShmem ||
aSurface->type() == SurfaceDescriptor::TYCbCrImage ||
aSurface->type() == SurfaceDescriptor::TRGBImage);
}
void
ISurfaceAllocator::DestroySharedSurface(SurfaceDescriptor* aSurface)
{
MOZ_ASSERT(aSurface);
if (!aSurface) {
return;
}
if (!IPCOpen()) {
return;
}
if (PlatformDestroySharedSurface(aSurface)) {
return;
}
switch (aSurface->type()) {
case SurfaceDescriptor::TShmem:
DeallocShmem(aSurface->get_Shmem());
break;
case SurfaceDescriptor::TYCbCrImage:
DeallocShmem(aSurface->get_YCbCrImage().data());
break;
case SurfaceDescriptor::TRGBImage:
DeallocShmem(aSurface->get_RGBImage().data());
break;
case SurfaceDescriptor::TSurfaceDescriptorD3D9:
case SurfaceDescriptor::TSurfaceDescriptorDIB:
case SurfaceDescriptor::TSurfaceDescriptorD3D10:
break;
case SurfaceDescriptor::TMemoryImage:
GfxMemoryImageReporter::WillFree((uint8_t*)aSurface->get_MemoryImage().data());
delete [] (uint8_t*)aSurface->get_MemoryImage().data();
break;
case SurfaceDescriptor::Tnull_t:
case SurfaceDescriptor::T__None:
break;
default:
NS_RUNTIMEABORT("surface type not implemented!");
}
*aSurface = SurfaceDescriptor();
}
#if !defined(MOZ_HAVE_PLATFORM_SPECIFIC_LAYER_BUFFERS)
bool
ISurfaceAllocator::PlatformAllocSurfaceDescriptor(const gfx::IntSize&,
gfxContentType,
uint32_t,
SurfaceDescriptor*)
{
return false;
}
#endif
} // namespace
} // namespace