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-rw-r--r--dom/media/gmp/GMPStorageChild.cpp380
1 files changed, 380 insertions, 0 deletions
diff --git a/dom/media/gmp/GMPStorageChild.cpp b/dom/media/gmp/GMPStorageChild.cpp
new file mode 100644
index 000000000..052b56d1b
--- /dev/null
+++ b/dom/media/gmp/GMPStorageChild.cpp
@@ -0,0 +1,380 @@
+/* -*- 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 "GMPStorageChild.h"
+#include "GMPChild.h"
+#include "gmp-storage.h"
+#include "base/task.h"
+
+#define ON_GMP_THREAD() (mPlugin->GMPMessageLoop() == MessageLoop::current())
+
+#define CALL_ON_GMP_THREAD(_func, ...) \
+ do { \
+ if (ON_GMP_THREAD()) { \
+ _func(__VA_ARGS__); \
+ } else { \
+ mPlugin->GMPMessageLoop()->PostTask( \
+ dont_add_new_uses_of_this::NewRunnableMethod(this, &GMPStorageChild::_func, ##__VA_ARGS__) \
+ ); \
+ } \
+ } while(false)
+
+static nsTArray<uint8_t>
+ToArray(const uint8_t* aData, uint32_t aDataSize)
+{
+ nsTArray<uint8_t> data;
+ data.AppendElements(aData, aDataSize);
+ return mozilla::Move(data);
+}
+
+namespace mozilla {
+namespace gmp {
+
+GMPRecordImpl::GMPRecordImpl(GMPStorageChild* aOwner,
+ const nsCString& aName,
+ GMPRecordClient* aClient)
+ : mName(aName)
+ , mClient(aClient)
+ , mOwner(aOwner)
+{
+}
+
+GMPErr
+GMPRecordImpl::Open()
+{
+ return mOwner->Open(this);
+}
+
+void
+GMPRecordImpl::OpenComplete(GMPErr aStatus)
+{
+ mClient->OpenComplete(aStatus);
+}
+
+GMPErr
+GMPRecordImpl::Read()
+{
+ return mOwner->Read(this);
+}
+
+void
+GMPRecordImpl::ReadComplete(GMPErr aStatus,
+ const uint8_t* aBytes,
+ uint32_t aLength)
+{
+ mClient->ReadComplete(aStatus, aBytes, aLength);
+}
+
+GMPErr
+GMPRecordImpl::Write(const uint8_t* aData, uint32_t aDataSize)
+{
+ return mOwner->Write(this, aData, aDataSize);
+}
+
+void
+GMPRecordImpl::WriteComplete(GMPErr aStatus)
+{
+ mClient->WriteComplete(aStatus);
+}
+
+GMPErr
+GMPRecordImpl::Close()
+{
+ RefPtr<GMPRecordImpl> kungfuDeathGrip(this);
+ // Delete our self reference.
+ Release();
+ mOwner->Close(this->Name());
+ return GMPNoErr;
+}
+
+GMPStorageChild::GMPStorageChild(GMPChild* aPlugin)
+ : mMonitor("GMPStorageChild")
+ , mPlugin(aPlugin)
+ , mShutdown(false)
+{
+ MOZ_ASSERT(ON_GMP_THREAD());
+}
+
+GMPErr
+GMPStorageChild::CreateRecord(const nsCString& aRecordName,
+ GMPRecord** aOutRecord,
+ GMPRecordClient* aClient)
+{
+ MonitorAutoLock lock(mMonitor);
+
+ if (mShutdown) {
+ NS_WARNING("GMPStorage used after it's been shutdown!");
+ return GMPClosedErr;
+ }
+
+ MOZ_ASSERT(aRecordName.Length() && aOutRecord);
+
+ if (HasRecord(aRecordName)) {
+ return GMPRecordInUse;
+ }
+
+ RefPtr<GMPRecordImpl> record(new GMPRecordImpl(this, aRecordName, aClient));
+ mRecords.Put(aRecordName, record); // Addrefs
+
+ // The GMPRecord holds a self reference until the GMP calls Close() on
+ // it. This means the object is always valid (even if neutered) while
+ // the GMP expects it to be.
+ record.forget(aOutRecord);
+
+ return GMPNoErr;
+}
+
+bool
+GMPStorageChild::HasRecord(const nsCString& aRecordName)
+{
+ mMonitor.AssertCurrentThreadOwns();
+ return mRecords.Contains(aRecordName);
+}
+
+already_AddRefed<GMPRecordImpl>
+GMPStorageChild::GetRecord(const nsCString& aRecordName)
+{
+ MonitorAutoLock lock(mMonitor);
+ RefPtr<GMPRecordImpl> record;
+ mRecords.Get(aRecordName, getter_AddRefs(record));
+ return record.forget();
+}
+
+GMPErr
+GMPStorageChild::Open(GMPRecordImpl* aRecord)
+{
+ MonitorAutoLock lock(mMonitor);
+
+ if (mShutdown) {
+ NS_WARNING("GMPStorage used after it's been shutdown!");
+ return GMPClosedErr;
+ }
+
+ if (!HasRecord(aRecord->Name())) {
+ // Trying to re-open a record that has already been closed.
+ return GMPClosedErr;
+ }
+
+ CALL_ON_GMP_THREAD(SendOpen, aRecord->Name());
+
+ return GMPNoErr;
+}
+
+GMPErr
+GMPStorageChild::Read(GMPRecordImpl* aRecord)
+{
+ MonitorAutoLock lock(mMonitor);
+
+ if (mShutdown) {
+ NS_WARNING("GMPStorage used after it's been shutdown!");
+ return GMPClosedErr;
+ }
+
+ if (!HasRecord(aRecord->Name())) {
+ // Record not opened.
+ return GMPClosedErr;
+ }
+
+ CALL_ON_GMP_THREAD(SendRead, aRecord->Name());
+
+ return GMPNoErr;
+}
+
+GMPErr
+GMPStorageChild::Write(GMPRecordImpl* aRecord,
+ const uint8_t* aData,
+ uint32_t aDataSize)
+{
+ if (aDataSize > GMP_MAX_RECORD_SIZE) {
+ return GMPQuotaExceededErr;
+ }
+
+ MonitorAutoLock lock(mMonitor);
+
+ if (mShutdown) {
+ NS_WARNING("GMPStorage used after it's been shutdown!");
+ return GMPClosedErr;
+ }
+
+ if (!HasRecord(aRecord->Name())) {
+ // Record not opened.
+ return GMPClosedErr;
+ }
+
+ CALL_ON_GMP_THREAD(SendWrite, aRecord->Name(), ToArray(aData, aDataSize));
+
+ return GMPNoErr;
+}
+
+GMPErr
+GMPStorageChild::Close(const nsCString& aRecordName)
+{
+ MonitorAutoLock lock(mMonitor);
+
+ if (!HasRecord(aRecordName)) {
+ // Already closed.
+ return GMPClosedErr;
+ }
+
+ mRecords.Remove(aRecordName);
+
+ if (!mShutdown) {
+ CALL_ON_GMP_THREAD(SendClose, aRecordName);
+ }
+
+ return GMPNoErr;
+}
+
+bool
+GMPStorageChild::RecvOpenComplete(const nsCString& aRecordName,
+ const GMPErr& aStatus)
+{
+ // We don't need a lock to read |mShutdown| since it is only changed in
+ // the GMP thread.
+ if (mShutdown) {
+ return true;
+ }
+ RefPtr<GMPRecordImpl> record = GetRecord(aRecordName);
+ if (!record) {
+ // Not fatal.
+ return true;
+ }
+ record->OpenComplete(aStatus);
+ return true;
+}
+
+bool
+GMPStorageChild::RecvReadComplete(const nsCString& aRecordName,
+ const GMPErr& aStatus,
+ InfallibleTArray<uint8_t>&& aBytes)
+{
+ if (mShutdown) {
+ return true;
+ }
+ RefPtr<GMPRecordImpl> record = GetRecord(aRecordName);
+ if (!record) {
+ // Not fatal.
+ return true;
+ }
+ record->ReadComplete(aStatus, aBytes.Elements(), aBytes.Length());
+ return true;
+}
+
+bool
+GMPStorageChild::RecvWriteComplete(const nsCString& aRecordName,
+ const GMPErr& aStatus)
+{
+ if (mShutdown) {
+ return true;
+ }
+ RefPtr<GMPRecordImpl> record = GetRecord(aRecordName);
+ if (!record) {
+ // Not fatal.
+ return true;
+ }
+ record->WriteComplete(aStatus);
+ return true;
+}
+
+GMPErr
+GMPStorageChild::EnumerateRecords(RecvGMPRecordIteratorPtr aRecvIteratorFunc,
+ void* aUserArg)
+{
+ MonitorAutoLock lock(mMonitor);
+
+ if (mShutdown) {
+ NS_WARNING("GMPStorage used after it's been shutdown!");
+ return GMPClosedErr;
+ }
+
+ MOZ_ASSERT(aRecvIteratorFunc);
+ mPendingRecordIterators.push(RecordIteratorContext(aRecvIteratorFunc, aUserArg));
+
+ CALL_ON_GMP_THREAD(SendGetRecordNames);
+
+ return GMPNoErr;
+}
+
+class GMPRecordIteratorImpl : public GMPRecordIterator {
+public:
+ explicit GMPRecordIteratorImpl(const InfallibleTArray<nsCString>& aRecordNames)
+ : mRecordNames(aRecordNames)
+ , mIndex(0)
+ {
+ mRecordNames.Sort();
+ }
+
+ GMPErr GetName(const char** aOutName, uint32_t* aOutNameLength) override {
+ if (!aOutName || !aOutNameLength) {
+ return GMPInvalidArgErr;
+ }
+ if (mIndex == mRecordNames.Length()) {
+ return GMPEndOfEnumeration;
+ }
+ *aOutName = mRecordNames[mIndex].get();
+ *aOutNameLength = mRecordNames[mIndex].Length();
+ return GMPNoErr;
+ }
+
+ GMPErr NextRecord() override {
+ if (mIndex < mRecordNames.Length()) {
+ mIndex++;
+ }
+ return (mIndex < mRecordNames.Length()) ? GMPNoErr
+ : GMPEndOfEnumeration;
+ }
+
+ void Close() override {
+ delete this;
+ }
+
+private:
+ nsTArray<nsCString> mRecordNames;
+ size_t mIndex;
+};
+
+bool
+GMPStorageChild::RecvRecordNames(InfallibleTArray<nsCString>&& aRecordNames,
+ const GMPErr& aStatus)
+{
+ RecordIteratorContext ctx;
+ {
+ MonitorAutoLock lock(mMonitor);
+ if (mShutdown || mPendingRecordIterators.empty()) {
+ return true;
+ }
+ ctx = mPendingRecordIterators.front();
+ mPendingRecordIterators.pop();
+ }
+
+ if (GMP_FAILED(aStatus)) {
+ ctx.mFunc(nullptr, ctx.mUserArg, aStatus);
+ } else {
+ ctx.mFunc(new GMPRecordIteratorImpl(aRecordNames), ctx.mUserArg, GMPNoErr);
+ }
+
+ return true;
+}
+
+bool
+GMPStorageChild::RecvShutdown()
+{
+ // Block any new storage requests, and thus any messages back to the
+ // parent. We don't delete any objects here, as that may invalidate
+ // GMPRecord pointers held by the GMP.
+ MonitorAutoLock lock(mMonitor);
+ mShutdown = true;
+ while (!mPendingRecordIterators.empty()) {
+ mPendingRecordIterators.pop();
+ }
+ return true;
+}
+
+} // namespace gmp
+} // namespace mozilla
+
+// avoid redefined macro in unified build
+#undef ON_GMP_THREAD
+#undef CALL_ON_GMP_THREAD