[android/platform-hardware-interfaces.git] / audio / common / all-versions / default / EffectMap.cpp
1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
17 #include <atomic>
19 #include "common/all-versions/default/EffectMap.h"
21 namespace android {
23 ANDROID_SINGLETON_STATIC_INSTANCE(EffectMap);
25 // static
26 const uint64_t EffectMap::INVALID_ID = 0;
28 // static
29 uint64_t EffectMap::makeUniqueId() {
30 static std::atomic<uint64_t> counter{INVALID_ID + 1};
31 return counter++;
32 }
34 uint64_t EffectMap::add(effect_handle_t handle) {
35 uint64_t newId = makeUniqueId();
36 std::lock_guard<std::mutex> lock(mLock);
37 mEffects.add(newId, handle);
38 return newId;
39 }
41 effect_handle_t EffectMap::get(const uint64_t& id) {
42 std::lock_guard<std::mutex> lock(mLock);
43 ssize_t idx = mEffects.indexOfKey(id);
44 return idx >= 0 ? mEffects[idx] : NULL;
45 }
47 void EffectMap::remove(effect_handle_t handle) {
48 std::lock_guard<std::mutex> lock(mLock);
49 for (size_t i = 0; i < mEffects.size(); ++i) {
50 if (mEffects[i] == handle) {
51 mEffects.removeItemsAt(i);
52 break;
53 }
54 }
55 }
57 } // namespace android