89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "GMPLog.h"
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#include "GMPStorage.h"
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#include "nsClassHashtable.h"
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namespace mozilla::gmp {
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#define LOG(msg, ...) \
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MOZ_LOG(GetGMPLog(), LogLevel::Debug, \
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("GMPMemoryStorage=%p, " msg, this, ##__VA_ARGS__))
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class GMPMemoryStorage : public GMPStorage {
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public:
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GMPMemoryStorage(const nsACString& aNodeId, const nsAString& aGMPName) {
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LOG("Created GMPMemoryStorage, nodeId=%s, gmpName=%s",
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aNodeId.BeginReading(), NS_ConvertUTF16toUTF8(aGMPName).get());
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}
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~GMPMemoryStorage() { LOG("Destroyed GMPMemoryStorage"); }
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GMPErr Open(const nsACString& aRecordName) override {
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MOZ_ASSERT(!IsOpen(aRecordName));
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Record* record = mRecords.GetOrInsertNew(aRecordName);
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record->mIsOpen = true;
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return GMPNoErr;
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}
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bool IsOpen(const nsACString& aRecordName) const override {
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const Record* record = mRecords.Get(aRecordName);
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if (!record) {
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return false;
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}
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return record->mIsOpen;
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}
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GMPErr Read(const nsACString& aRecordName,
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nsTArray<uint8_t>& aOutBytes) override {
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const Record* record = mRecords.Get(aRecordName);
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if (!record) {
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return GMPGenericErr;
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}
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aOutBytes = record->mData.Clone();
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return GMPNoErr;
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}
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GMPErr Write(const nsACString& aRecordName,
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const nsTArray<uint8_t>& aBytes) override {
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Record* record = nullptr;
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if (!mRecords.Get(aRecordName, &record)) {
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return GMPClosedErr;
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}
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record->mData = aBytes.Clone();
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return GMPNoErr;
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}
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void Close(const nsACString& aRecordName) override {
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Record* record = nullptr;
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if (!mRecords.Get(aRecordName, &record)) {
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return;
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}
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if (!record->mData.Length()) {
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// Record is empty, delete.
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mRecords.Remove(aRecordName);
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} else {
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record->mIsOpen = false;
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}
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}
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private:
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struct Record {
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nsTArray<uint8_t> mData;
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bool mIsOpen = false;
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};
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nsClassHashtable<nsCStringHashKey, Record> mRecords;
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};
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already_AddRefed<GMPStorage> CreateGMPMemoryStorage(const nsACString& aNodeId,
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const nsAString& aGMPName) {
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return RefPtr<GMPStorage>(new GMPMemoryStorage(aNodeId, aGMPName)).forget();
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}
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#undef LOG
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} // namespace mozilla::gmp
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