gecko/gfx/layers/ipc/ShadowLayerUtilsGralloc.cpp

438 lines
13 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 "mozilla/DebugOnly.h"
#include "mozilla/layers/PGrallocBufferChild.h"
#include "mozilla/layers/PGrallocBufferParent.h"
#include "mozilla/layers/PLayersChild.h"
#include "mozilla/layers/ShadowLayers.h"
#include "mozilla/unused.h"
#include "nsXULAppAPI.h"
#include "ShadowLayerUtilsGralloc.h"
#include "nsIMemoryReporter.h"
#include "gfxImageSurface.h"
#include "gfxPlatform.h"
#include "sampler.h"
using namespace android;
using namespace base;
using namespace mozilla::layers;
using namespace mozilla::gl;
namespace IPC {
void
ParamTraits<MagicGrallocBufferHandle>::Write(Message* aMsg,
const paramType& aParam)
{
Flattenable *flattenable = aParam.mGraphicBuffer.get();
size_t nbytes = flattenable->getFlattenedSize();
size_t nfds = flattenable->getFdCount();
char data[nbytes];
int fds[nfds];
flattenable->flatten(data, nbytes, fds, nfds);
aMsg->WriteSize(nbytes);
aMsg->WriteSize(nfds);
aMsg->WriteBytes(data, nbytes);
for (size_t n = 0; n < nfds; ++n) {
// These buffers can't die in transit because they're created
// synchonously and the parent-side buffer can only be dropped if
// there's a crash.
aMsg->WriteFileDescriptor(FileDescriptor(fds[n], false));
}
}
bool
ParamTraits<MagicGrallocBufferHandle>::Read(const Message* aMsg,
void** aIter, paramType* aResult)
{
size_t nbytes;
size_t nfds;
const char* data;
if (!aMsg->ReadSize(aIter, &nbytes) ||
!aMsg->ReadSize(aIter, &nfds) ||
!aMsg->ReadBytes(aIter, &data, nbytes)) {
return false;
}
int fds[nfds];
for (size_t n = 0; n < nfds; ++n) {
FileDescriptor fd;
if (!aMsg->ReadFileDescriptor(aIter, &fd)) {
return false;
}
// If the GraphicBuffer was shared cross-process, SCM_RIGHTS does
// the right thing and dup's the fd. If it's shared cross-thread,
// SCM_RIGHTS doesn't dup the fd. That's surprising, but we just
// deal with it here. NB: only the "default" (master) process can
// alloc gralloc buffers.
bool sameProcess = (XRE_GetProcessType() == GeckoProcessType_Default);
int dupFd = sameProcess ? dup(fd.fd) : fd.fd;
fds[n] = dupFd;
}
sp<GraphicBuffer> buffer(new GraphicBuffer());
Flattenable *flattenable = buffer.get();
if (NO_ERROR == flattenable->unflatten(data, nbytes, fds, nfds)) {
aResult->mGraphicBuffer = buffer;
return true;
}
return false;
}
} // namespace IPC
namespace mozilla {
namespace layers {
MagicGrallocBufferHandle::MagicGrallocBufferHandle(const sp<GraphicBuffer>& aGraphicBuffer)
: mGraphicBuffer(aGraphicBuffer)
{
}
//-----------------------------------------------------------------------------
// Parent process
static gfxASurface::gfxImageFormat
ImageFormatForPixelFormat(android::PixelFormat aFormat)
{
switch (aFormat) {
case PIXEL_FORMAT_RGBA_8888:
return gfxASurface::ImageFormatARGB32;
case PIXEL_FORMAT_RGBX_8888:
return gfxASurface::ImageFormatRGB24;
case PIXEL_FORMAT_RGB_565:
return gfxASurface::ImageFormatRGB16_565;
case PIXEL_FORMAT_A_8:
return gfxASurface::ImageFormatA8;
default:
MOZ_NOT_REACHED("Unknown gralloc pixel format");
}
return gfxASurface::ImageFormatARGB32;
}
static android::PixelFormat
PixelFormatForImageFormat(gfxASurface::gfxImageFormat aFormat)
{
switch (aFormat) {
case gfxASurface::ImageFormatARGB32:
return android::PIXEL_FORMAT_RGBA_8888;
case gfxASurface::ImageFormatRGB24:
return android::PIXEL_FORMAT_RGBX_8888;
case gfxASurface::ImageFormatRGB16_565:
return android::PIXEL_FORMAT_RGB_565;
case gfxASurface::ImageFormatA8:
return android::PIXEL_FORMAT_A_8;
default:
MOZ_NOT_REACHED("Unknown gralloc pixel format");
}
return gfxASurface::ImageFormatARGB32;
}
static android::PixelFormat
PixelFormatForContentType(gfxASurface::gfxContentType aContentType)
{
return PixelFormatForImageFormat(
gfxPlatform::GetPlatform()->OptimalFormatForContent(aContentType));
}
static gfxASurface::gfxContentType
ContentTypeFromPixelFormat(android::PixelFormat aFormat)
{
return gfxASurface::ContentFromFormat(ImageFormatForPixelFormat(aFormat));
}
static size_t sCurrentAlloc;
static int64_t GetGrallocSize() { return sCurrentAlloc; }
NS_MEMORY_REPORTER_IMPLEMENT(GrallocBufferActor,
"gralloc",
KIND_OTHER,
UNITS_BYTES,
GetGrallocSize,
"Special RAM that can be shared between processes and directly "
"accessed by both the CPU and GPU. Gralloc memory is usually a "
"relatively precious resource, with much less available than generic "
"RAM. When it's exhausted, graphics performance can suffer. "
"This value can be incorrect because of race conditions.");
GrallocBufferActor::GrallocBufferActor()
: mAllocBytes(0)
{
static bool registered;
if (!registered) {
// We want to be sure that the first call here will always run on
// the main thread.
NS_ASSERTION(NS_IsMainThread(), "Should be on main thread.");
NS_RegisterMemoryReporter(new NS_MEMORY_REPORTER_NAME(GrallocBufferActor));
registered = true;
}
}
GrallocBufferActor::~GrallocBufferActor()
{
if (mAllocBytes > 0) {
sCurrentAlloc -= mAllocBytes;
}
}
/*static*/ PGrallocBufferParent*
GrallocBufferActor::Create(const gfxIntSize& aSize,
const gfxContentType& aContent,
MaybeMagicGrallocBufferHandle* aOutHandle)
{
SAMPLE_LABEL("GrallocBufferActor", "Create");
GrallocBufferActor* actor = new GrallocBufferActor();
*aOutHandle = null_t();
android::PixelFormat format = PixelFormatForContentType(aContent);
sp<GraphicBuffer> buffer(
new GraphicBuffer(aSize.width, aSize.height, format,
GraphicBuffer::USAGE_SW_READ_OFTEN |
GraphicBuffer::USAGE_SW_WRITE_OFTEN |
GraphicBuffer::USAGE_HW_TEXTURE));
if (buffer->initCheck() != OK)
return actor;
size_t bpp = gfxASurface::BytePerPixelFromFormat(
gfxPlatform::GetPlatform()->OptimalFormatForContent(aContent));
actor->mAllocBytes = aSize.width * aSize.height * bpp;
sCurrentAlloc += actor->mAllocBytes;
actor->mGraphicBuffer = buffer;
*aOutHandle = MagicGrallocBufferHandle(buffer);
return actor;
}
/*static*/ already_AddRefed<TextureImage>
ShadowLayerManager::OpenDescriptorForDirectTexturing(GLContext* aGL,
const SurfaceDescriptor& aDescriptor,
GLenum aWrapMode)
{
SAMPLE_LABEL("ShadowLayerManager", "OpenDescriptorForDirectTexturing");
if (SurfaceDescriptor::TSurfaceDescriptorGralloc != aDescriptor.type()) {
return nullptr;
}
sp<GraphicBuffer> buffer = GrallocBufferActor::GetFrom(aDescriptor);
return aGL->CreateDirectTextureImage(buffer.get(), aWrapMode);
}
/*static*/ void
ShadowLayerManager::PlatformSyncBeforeReplyUpdate()
{
// Nothing to be done for gralloc.
}
/*static*/ PGrallocBufferParent*
GrallocBufferActor::Create(const gfxIntSize& aSize,
const uint32_t& aFormat,
const uint32_t& aUsage,
MaybeMagicGrallocBufferHandle* aOutHandle)
{
GrallocBufferActor* actor = new GrallocBufferActor();
*aOutHandle = null_t();
sp<GraphicBuffer> buffer(
new GraphicBuffer(aSize.width, aSize.height, aFormat, aUsage));
if (buffer->initCheck() != OK)
return actor;
actor->mGraphicBuffer = buffer;
*aOutHandle = MagicGrallocBufferHandle(buffer);
return actor;
}
bool
ShadowLayerManager::PlatformDestroySharedSurface(SurfaceDescriptor* aSurface)
{
if (SurfaceDescriptor::TSurfaceDescriptorGralloc != aSurface->type()) {
return false;
}
PGrallocBufferParent* gbp =
aSurface->get_SurfaceDescriptorGralloc().bufferParent();
unused << PGrallocBufferParent::Send__delete__(gbp);
*aSurface = SurfaceDescriptor();
return true;
}
//-----------------------------------------------------------------------------
// Child process
/*static*/ PGrallocBufferChild*
GrallocBufferActor::Create()
{
return new GrallocBufferActor();
}
void
GrallocBufferActor::InitFromHandle(const MagicGrallocBufferHandle& aHandle)
{
MOZ_ASSERT(!mGraphicBuffer.get());
MOZ_ASSERT(aHandle.mGraphicBuffer.get());
mGraphicBuffer = aHandle.mGraphicBuffer;
}
bool
ShadowLayerForwarder::PlatformAllocBuffer(const gfxIntSize& aSize,
gfxASurface::gfxContentType aContent,
uint32_t aCaps,
SurfaceDescriptor* aBuffer)
{
// Some GL implementations fail to render gralloc textures with
// width < 64. There's not much point in gralloc'ing buffers that
// small anyway, so fall back on shared memory plus a texture
// upload.
if (aSize.width < 64) {
return false;
}
SAMPLE_LABEL("ShadowLayerForwarder", "PlatformAllocBuffer");
// Gralloc buffers are efficiently mappable as gfxImageSurface, so
// no need to check |aCaps & MAP_AS_IMAGE_SURFACE|.
MaybeMagicGrallocBufferHandle handle;
PGrallocBufferChild* gc =
mShadowManager->SendPGrallocBufferConstructor(aSize, aContent, &handle);
if (handle.Tnull_t == handle.type()) {
PGrallocBufferChild::Send__delete__(gc);
return false;
}
GrallocBufferActor* gba = static_cast<GrallocBufferActor*>(gc);
gba->InitFromHandle(handle.get_MagicGrallocBufferHandle());
*aBuffer = SurfaceDescriptorGralloc(nullptr, gc, /* external */ false);
return true;
}
//-----------------------------------------------------------------------------
// Both processes
/*static*/ sp<GraphicBuffer>
GrallocBufferActor::GetFrom(const SurfaceDescriptorGralloc& aDescriptor)
{
GrallocBufferActor* gba = nullptr;
if (PGrallocBufferChild* child = aDescriptor.bufferChild()) {
gba = static_cast<GrallocBufferActor*>(child);
} else if (PGrallocBufferParent* parent = aDescriptor.bufferParent()) {
gba = static_cast<GrallocBufferActor*>(parent);
}
return gba->mGraphicBuffer;
}
/*static*/ already_AddRefed<gfxASurface>
ShadowLayerForwarder::PlatformOpenDescriptor(OpenMode aMode,
const SurfaceDescriptor& aSurface)
{
SAMPLE_LABEL("ShadowLayerForwarder", "PlatformOpenDescriptor");
if (SurfaceDescriptor::TSurfaceDescriptorGralloc != aSurface.type()) {
return nullptr;
}
sp<GraphicBuffer> buffer =
GrallocBufferActor::GetFrom(aSurface.get_SurfaceDescriptorGralloc());
uint32_t usage = GRALLOC_USAGE_SW_READ_OFTEN;
if (OPEN_READ_WRITE == aMode) {
usage |= GRALLOC_USAGE_SW_WRITE_OFTEN;
}
void *vaddr;
DebugOnly<status_t> status = buffer->lock(usage, &vaddr);
// If we fail to lock, we'll just end up aborting anyway.
MOZ_ASSERT(status == OK);
gfxIntSize size = gfxIntSize(buffer->getWidth(), buffer->getHeight());
gfxImageFormat format = ImageFormatForPixelFormat(buffer->getPixelFormat());
long pixelStride = buffer->getStride();
long byteStride = pixelStride * gfxASurface::BytePerPixelFromFormat(format);
nsRefPtr<gfxASurface> surf =
new gfxImageSurface((unsigned char*)vaddr, size, byteStride, format);
return surf->CairoStatus() ? nullptr : surf.forget();
}
/*static*/ bool
ShadowLayerForwarder::PlatformGetDescriptorSurfaceContentType(
const SurfaceDescriptor& aDescriptor, OpenMode aMode,
gfxContentType* aContent,
gfxASurface** aSurface)
{
if (SurfaceDescriptor::TSurfaceDescriptorGralloc != aDescriptor.type()) {
return false;
}
sp<GraphicBuffer> buffer =
GrallocBufferActor::GetFrom(aDescriptor.get_SurfaceDescriptorGralloc());
*aContent = ContentTypeFromPixelFormat(buffer->getPixelFormat());
return true;
}
/*static*/ bool
ShadowLayerForwarder::PlatformGetDescriptorSurfaceSize(
const SurfaceDescriptor& aDescriptor, OpenMode aMode,
gfxIntSize* aSize,
gfxASurface** aSurface)
{
if (SurfaceDescriptor::TSurfaceDescriptorGralloc != aDescriptor.type()) {
return false;
}
sp<GraphicBuffer> buffer =
GrallocBufferActor::GetFrom(aDescriptor.get_SurfaceDescriptorGralloc());
*aSize = gfxIntSize(buffer->getWidth(), buffer->getHeight());
return true;
}
/*static*/ bool
ShadowLayerForwarder::PlatformDestroySharedSurface(SurfaceDescriptor* aSurface)
{
if (SurfaceDescriptor::TSurfaceDescriptorGralloc != aSurface->type()) {
return false;
}
PGrallocBufferChild* gbp =
aSurface->get_SurfaceDescriptorGralloc().bufferChild();
PGrallocBufferChild::Send__delete__(gbp);
*aSurface = SurfaceDescriptor();
return true;
}
/*static*/ bool
ShadowLayerForwarder::PlatformCloseDescriptor(const SurfaceDescriptor& aDescriptor)
{
SAMPLE_LABEL("ShadowLayerForwarder", "PlatformCloseDescriptor");
if (SurfaceDescriptor::TSurfaceDescriptorGralloc != aDescriptor.type()) {
return false;
}
sp<GraphicBuffer> buffer = GrallocBufferActor::GetFrom(aDescriptor);
// If the buffer wasn't lock()d, this probably blows up. But since
// PlatformCloseDescriptor() is private and only used by
// AutoOpenSurface, we want to know if the logic is wrong there.
buffer->unlock();
return true;
}
/*static*/ void
ShadowLayerForwarder::PlatformSyncBeforeUpdate()
{
// Nothing to be done for gralloc.
}
} // namespace layers
} // namespace mozilla