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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 "VideoDecoderManagerParent.h"
#include "VideoDecoderParent.h"
#include "base/thread.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/Services.h"
#include "mozilla/Observer.h"
#include "nsIObserverService.h"
#include "nsIObserver.h"
#include "nsIEventTarget.h"
#include "nsThreadUtils.h"
#include "ImageContainer.h"
#include "mozilla/layers/VideoBridgeChild.h"
#include "mozilla/SharedThreadPool.h"
#include "mozilla/layers/ImageDataSerializer.h"
#include "mozilla/SyncRunnable.h"
#if XP_WIN
#include <objbase.h>
#endif
namespace mozilla {
namespace dom {
using base::Thread;
using namespace ipc;
using namespace layers;
using namespace gfx;
SurfaceDescriptorGPUVideo
VideoDecoderManagerParent::StoreImage(Image* aImage, TextureClient* aTexture)
{
mImageMap[aTexture->GetSerial()] = aImage;
mTextureMap[aTexture->GetSerial()] = aTexture;
return SurfaceDescriptorGPUVideo(aTexture->GetSerial());
}
StaticRefPtr<nsIThread> sVideoDecoderManagerThread;
StaticRefPtr<TaskQueue> sManagerTaskQueue;
class ManagerThreadShutdownObserver : public nsIObserver
{
virtual ~ManagerThreadShutdownObserver() {}
public:
ManagerThreadShutdownObserver() {}
NS_DECL_ISUPPORTS
NS_IMETHOD Observe(nsISupports* aSubject, const char* aTopic,
const char16_t* aData) override
{
MOZ_ASSERT(strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0);
VideoDecoderManagerParent::ShutdownThreads();
return NS_OK;
}
};
NS_IMPL_ISUPPORTS(ManagerThreadShutdownObserver, nsIObserver);
void
VideoDecoderManagerParent::StartupThreads()
{
MOZ_ASSERT(NS_IsMainThread());
if (sVideoDecoderManagerThread) {
return;
}
nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
if (!observerService) {
return;
}
RefPtr<nsIThread> managerThread;
nsresult rv = NS_NewNamedThread("VideoParent", getter_AddRefs(managerThread));
if (NS_FAILED(rv)) {
return;
}
sVideoDecoderManagerThread = managerThread;
#if XP_WIN
sVideoDecoderManagerThread->Dispatch(NS_NewRunnableFunction([]() {
HRESULT hr = CoInitializeEx(0, COINIT_MULTITHREADED);
MOZ_ASSERT(hr == S_OK);
}), NS_DISPATCH_NORMAL);
#endif
sVideoDecoderManagerThread->Dispatch(NS_NewRunnableFunction([]() {
layers::VideoBridgeChild::Startup();
}), NS_DISPATCH_NORMAL);
sManagerTaskQueue = new TaskQueue(managerThread.forget());
ManagerThreadShutdownObserver* obs = new ManagerThreadShutdownObserver();
observerService->AddObserver(obs, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false);
}
void
VideoDecoderManagerParent::ShutdownThreads()
{
sManagerTaskQueue->BeginShutdown();
sManagerTaskQueue->AwaitShutdownAndIdle();
sManagerTaskQueue = nullptr;
sVideoDecoderManagerThread->Shutdown();
sVideoDecoderManagerThread = nullptr;
}
void
VideoDecoderManagerParent::ShutdownVideoBridge()
{
if (sVideoDecoderManagerThread) {
RefPtr<Runnable> task = NS_NewRunnableFunction([]() {
VideoBridgeChild::Shutdown();
});
SyncRunnable::DispatchToThread(sVideoDecoderManagerThread, task);
}
}
bool
VideoDecoderManagerParent::OnManagerThread()
{
return NS_GetCurrentThread() == sVideoDecoderManagerThread;
}
bool
VideoDecoderManagerParent::CreateForContent(Endpoint<PVideoDecoderManagerParent>&& aEndpoint)
{
MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_GPU);
MOZ_ASSERT(NS_IsMainThread());
StartupThreads();
if (!sVideoDecoderManagerThread) {
return false;
}
RefPtr<VideoDecoderManagerParent> parent = new VideoDecoderManagerParent();
RefPtr<Runnable> task = NewRunnableMethod<Endpoint<PVideoDecoderManagerParent>&&>(
parent, &VideoDecoderManagerParent::Open, Move(aEndpoint));
sVideoDecoderManagerThread->Dispatch(task.forget(), NS_DISPATCH_NORMAL);
return true;
}
VideoDecoderManagerParent::VideoDecoderManagerParent()
{
MOZ_COUNT_CTOR(VideoDecoderManagerParent);
}
VideoDecoderManagerParent::~VideoDecoderManagerParent()
{
MOZ_COUNT_DTOR(VideoDecoderManagerParent);
}
PVideoDecoderParent*
VideoDecoderManagerParent::AllocPVideoDecoderParent()
{
return new VideoDecoderParent(this, sManagerTaskQueue, new TaskQueue(SharedThreadPool::Get(NS_LITERAL_CSTRING("VideoDecoderParent"), 4)));
}
bool
VideoDecoderManagerParent::DeallocPVideoDecoderParent(PVideoDecoderParent* actor)
{
VideoDecoderParent* parent = static_cast<VideoDecoderParent*>(actor);
parent->Destroy();
return true;
}
void
VideoDecoderManagerParent::Open(Endpoint<PVideoDecoderManagerParent>&& aEndpoint)
{
if (!aEndpoint.Bind(this)) {
// We can't recover from this.
MOZ_CRASH("Failed to bind VideoDecoderManagerParent to endpoint");
}
AddRef();
}
void
VideoDecoderManagerParent::DeallocPVideoDecoderManagerParent()
{
Release();
}
bool
VideoDecoderManagerParent::RecvReadback(const SurfaceDescriptorGPUVideo& aSD, SurfaceDescriptor* aResult)
{
RefPtr<Image> image = mImageMap[aSD.handle()];
if (!image) {
*aResult = null_t();
return true;
}
RefPtr<SourceSurface> source = image->GetAsSourceSurface();
if (!source) {
*aResult = null_t();
return true;
}
SurfaceFormat format = source->GetFormat();
IntSize size = source->GetSize();
size_t length = ImageDataSerializer::ComputeRGBBufferSize(size, format);
Shmem buffer;
if (!length || !AllocShmem(length, Shmem::SharedMemory::TYPE_BASIC, &buffer)) {
*aResult = null_t();
return true;
}
RefPtr<DrawTarget> dt = Factory::CreateDrawTargetForData(gfx::BackendType::CAIRO,
buffer.get<uint8_t>(), size,
ImageDataSerializer::ComputeRGBStride(format, size.width),
format);
if (!dt) {
DeallocShmem(buffer);
*aResult = null_t();
return true;
}
dt->CopySurface(source, IntRect(0, 0, size.width, size.height), IntPoint());
dt->Flush();
*aResult = SurfaceDescriptorBuffer(RGBDescriptor(size, format, true), MemoryOrShmem(buffer));
return true;
}
bool
VideoDecoderManagerParent::RecvDeallocateSurfaceDescriptorGPUVideo(const SurfaceDescriptorGPUVideo& aSD)
{
mImageMap.erase(aSD.handle());
mTextureMap.erase(aSD.handle());
return true;
}
} // namespace dom
} // namespace mozilla
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