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/* -*- Mode: C++; tab-width: 2; 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 "GMPContentParent.h"
#include "GMPLog.h"
#include "GMPParent.h"
#include "GMPServiceChild.h"
#include "GMPVideoDecoderParent.h"
#include "GMPVideoEncoderParent.h"
#include "ChromiumCDMParent.h"
#include "mozIGeckoMediaPluginService.h"
#include "mozilla/Logging.h"
#include "mozilla/Unused.h"
#include "base/task.h"
namespace mozilla::gmp {
static const char* GetBoolString(bool aBool) {
return aBool ? "true" : "false";
}
GMPContentParent::GMPContentParent(GMPParent* aParent)
: mParent(aParent), mPluginId(0) {
GMP_LOG_DEBUG("GMPContentParent::GMPContentParent(this=%p), aParent=%p", this,
aParent);
if (mParent) {
SetDisplayName(mParent->GetDisplayName());
SetPluginId(mParent->GetPluginId());
SetPluginType(mParent->GetPluginType());
}
}
GMPContentParent::~GMPContentParent() {
GMP_LOG_DEBUG(
"GMPContentParent::~GMPContentParent(this=%p) mVideoDecoders.IsEmpty=%s, "
"mVideoEncoders.IsEmpty=%s, mChromiumCDMs.IsEmpty=%s, "
"mCloseBlockerCount=%" PRIu32,
this, GetBoolString(mVideoDecoders.IsEmpty()),
GetBoolString(mVideoEncoders.IsEmpty()),
GetBoolString(mChromiumCDMs.IsEmpty()), mCloseBlockerCount);
}
void GMPContentParent::ActorDestroy(ActorDestroyReason aWhy) {
GMP_LOG_DEBUG("GMPContentParent::ActorDestroy(this=%p, aWhy=%d)", this,
static_cast<int>(aWhy));
MOZ_ASSERT(mVideoDecoders.IsEmpty() && mVideoEncoders.IsEmpty() &&
mChromiumCDMs.IsEmpty());
}
void GMPContentParent::CheckThread() {
MOZ_ASSERT(GMPEventTarget()->IsOnCurrentThread());
}
void GMPContentParent::ChromiumCDMDestroyed(ChromiumCDMParent* aCDM) {
GMP_LOG_DEBUG("GMPContentParent::ChromiumCDMDestroyed(this=%p, aCDM=%p)",
this, aCDM);
MOZ_ASSERT(GMPEventTarget()->IsOnCurrentThread());
MOZ_ALWAYS_TRUE(mChromiumCDMs.RemoveElement(aCDM));
CloseIfUnused();
}
void GMPContentParent::VideoDecoderDestroyed(GMPVideoDecoderParent* aDecoder) {
GMP_LOG_DEBUG("GMPContentParent::VideoDecoderDestroyed(this=%p, aDecoder=%p)",
this, aDecoder);
MOZ_ASSERT(GMPEventTarget()->IsOnCurrentThread());
// If the constructor fails, we'll get called before it's added
Unused << NS_WARN_IF(!mVideoDecoders.RemoveElement(aDecoder));
CloseIfUnused();
}
void GMPContentParent::VideoEncoderDestroyed(GMPVideoEncoderParent* aEncoder) {
GMP_LOG_DEBUG("GMPContentParent::VideoEncoderDestroyed(this=%p, aEncoder=%p)",
this, aEncoder);
MOZ_ASSERT(GMPEventTarget()->IsOnCurrentThread());
// If the constructor fails, we'll get called before it's added
Unused << NS_WARN_IF(!mVideoEncoders.RemoveElement(aEncoder));
CloseIfUnused();
}
void GMPContentParent::AddCloseBlocker() {
MOZ_ASSERT(GMPEventTarget()->IsOnCurrentThread());
++mCloseBlockerCount;
GMP_LOG_DEBUG(
"GMPContentParent::AddCloseBlocker(this=%p) mCloseBlockerCount=%" PRIu32,
this, mCloseBlockerCount);
}
void GMPContentParent::RemoveCloseBlocker() {
MOZ_ASSERT(GMPEventTarget()->IsOnCurrentThread());
--mCloseBlockerCount;
GMP_LOG_DEBUG(
"GMPContentParent::RemoveCloseBlocker(this=%p) "
"mCloseBlockerCount=%" PRIu32,
this, mCloseBlockerCount);
CloseIfUnused();
}
void GMPContentParent::CloseIfUnused() {
MOZ_ASSERT(GMPEventTarget()->IsOnCurrentThread());
GMP_LOG_DEBUG(
"GMPContentParent::CloseIfUnused(this=%p) mVideoDecoders.IsEmpty=%s, "
"mVideoEncoders.IsEmpty=%s, mChromiumCDMs.IsEmpty=%s, "
"mCloseBlockerCount=%" PRIu32,
this, GetBoolString(mVideoDecoders.IsEmpty()),
GetBoolString(mVideoEncoders.IsEmpty()),
GetBoolString(mChromiumCDMs.IsEmpty()), mCloseBlockerCount);
if (mVideoDecoders.IsEmpty() && mVideoEncoders.IsEmpty() &&
mChromiumCDMs.IsEmpty() && mCloseBlockerCount == 0) {
RefPtr<GMPContentParent> toClose;
if (mParent) {
toClose = mParent->ForgetGMPContentParent();
} else {
toClose = this;
RefPtr<GeckoMediaPluginServiceChild> gmp(
GeckoMediaPluginServiceChild::GetSingleton());
if (gmp) {
gmp->RemoveGMPContentParent(toClose);
}
}
NS_DispatchToCurrentThread(NewRunnableMethod(
"gmp::GMPContentParent::Close", toClose, &GMPContentParent::Close));
}
}
nsCOMPtr<nsISerialEventTarget> GMPContentParent::GMPEventTarget() {
if (!mGMPEventTarget) {
GMP_LOG_DEBUG("GMPContentParent::GMPEventTarget(this=%p)", this);
nsCOMPtr<mozIGeckoMediaPluginService> mps =
do_GetService("@mozilla.org/gecko-media-plugin-service;1");
MOZ_ASSERT(mps);
if (!mps) {
return nullptr;
}
// Not really safe if we just grab to the mGMPEventTarget, as we don't know
// what thread we're running on and other threads may be trying to
// access this without locks! However, debug only, and primary failure
// mode outside of compiler-helped TSAN is a leak. But better would be
// to use swap() under a lock.
nsCOMPtr<nsIThread> gmpThread;
mps->GetThread(getter_AddRefs(gmpThread));
MOZ_ASSERT(gmpThread);
mGMPEventTarget = gmpThread;
}
return mGMPEventTarget;
}
already_AddRefed<ChromiumCDMParent> GMPContentParent::GetChromiumCDM(
const nsCString& aKeySystem) {
GMP_LOG_DEBUG("GMPContentParent::GetChromiumCDM(this=%p aKeySystem=%s)", this,
aKeySystem.get());
RefPtr<ChromiumCDMParent> parent = new ChromiumCDMParent(this, GetPluginId());
// TODO: Remove parent from mChromiumCDMs in ChromiumCDMParent::Destroy().
mChromiumCDMs.AppendElement(parent);
if (!SendPChromiumCDMConstructor(parent, aKeySystem)) {
MOZ_ASSERT(!mChromiumCDMs.Contains(parent));
return nullptr;
}
return parent.forget();
}
nsresult GMPContentParent::GetGMPVideoDecoder(GMPVideoDecoderParent** aGMPVD) {
GMP_LOG_DEBUG("GMPContentParent::GetGMPVideoDecoder(this=%p)", this);
RefPtr<GMPVideoDecoderParent> vdp = new GMPVideoDecoderParent(this);
if (!SendPGMPVideoDecoderConstructor(vdp)) {
return NS_ERROR_FAILURE;
}
// This addref corresponds to the Proxy pointer the consumer is returned.
// It's dropped by calling Close() on the interface.
vdp.get()->AddRef();
*aGMPVD = vdp;
mVideoDecoders.AppendElement(vdp);
return NS_OK;
}
nsresult GMPContentParent::GetGMPVideoEncoder(GMPVideoEncoderParent** aGMPVE) {
GMP_LOG_DEBUG("GMPContentParent::GetGMPVideoEncoder(this=%p)", this);
RefPtr<GMPVideoEncoderParent> vep = new GMPVideoEncoderParent(this);
if (!SendPGMPVideoEncoderConstructor(vep)) {
return NS_ERROR_FAILURE;
}
// This addref corresponds to the Proxy pointer the consumer is returned.
// It's dropped by calling Close() on the interface.
vep.get()->AddRef();
*aGMPVE = vep;
mVideoEncoders.AppendElement(vep);
return NS_OK;
}
void GMPContentParentCloseBlocker::Destroy() {
MOZ_ASSERT(mParent);
MOZ_ASSERT(mEventTarget);
if (!mEventTarget->IsOnCurrentThread()) {
mEventTarget->Dispatch(NS_NewRunnableFunction(
__func__, [parent = std::move(mParent), eventTarget = mEventTarget]() {
parent->RemoveCloseBlocker();
}));
mEventTarget = nullptr;
return;
}
mParent->RemoveCloseBlocker();
mParent = nullptr;
mEventTarget = nullptr;
}
} // namespace mozilla::gmp
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