PreProcessing : Add libeffect pre-processing effects implementation
Bug: 258124419
Test: atest VtsHalAECTargetTest
Test: atest VtsHalAGC1TargetTest
Test: atest VtsHalAGC2TargetTest
Test: atest VtsHalNSTargetTest
Change-Id: Idfecf978b87419f54f1c930434821ba2a348d9dd
diff --git a/media/libeffects/preprocessing/aidl/PreProcessingSession.h b/media/libeffects/preprocessing/aidl/PreProcessingSession.h
new file mode 100644
index 0000000..877292f
--- /dev/null
+++ b/media/libeffects/preprocessing/aidl/PreProcessingSession.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <algorithm>
+#include <memory>
+#include <unordered_map>
+
+#include <android-base/logging.h>
+#include <android-base/thread_annotations.h>
+
+#include "PreProcessingContext.h"
+#include "PreProcessingTypes.h"
+
+namespace aidl::android::hardware::audio::effect {
+
+/**
+ * @brief Maintain all effect pre-processing sessions.
+ *
+ * Sessions are identified with the session ID, maximum of MAX_BUNDLE_SESSIONS is supported by the
+ * pre-processing implementation.
+ */
+class PreProcessingSession {
+ public:
+ static PreProcessingSession& getPreProcessingSession() {
+ static PreProcessingSession instance;
+ return instance;
+ }
+
+ static bool findPreProcessingTypeInList(
+ std::vector<std::shared_ptr<PreProcessingContext>>& list,
+ const PreProcessingEffectType& type, bool remove = false) {
+ auto itor = std::find_if(list.begin(), list.end(),
+ [type](const std::shared_ptr<PreProcessingContext>& bundle) {
+ return bundle->getPreProcessingType() == type;
+ });
+ if (itor == list.end()) {
+ return false;
+ }
+ if (remove) {
+ (*itor)->deInit();
+ list.erase(itor);
+ }
+ return true;
+ }
+
+ /**
+ * Create a certain type of PreProcessingContext in shared_ptr container, each session must not
+ * have more than one session for each type.
+ */
+ std::shared_ptr<PreProcessingContext> createSession(const PreProcessingEffectType& type,
+ int statusDepth,
+ const Parameter::Common& common) {
+ int sessionId = common.session;
+ LOG(DEBUG) << __func__ << type << " with sessionId " << sessionId;
+ std::lock_guard lg(mMutex);
+ if (mSessionMap.count(sessionId) == 0 && mSessionMap.size() >= MAX_PRE_PROC_SESSIONS) {
+ LOG(ERROR) << __func__ << " exceed max bundle session";
+ return nullptr;
+ }
+
+ if (mSessionMap.count(sessionId)) {
+ if (findPreProcessingTypeInList(mSessionMap[sessionId], type)) {
+ LOG(ERROR) << __func__ << type << " already exist in session " << sessionId;
+ return nullptr;
+ }
+ }
+
+ auto& list = mSessionMap[sessionId];
+ auto context = std::make_shared<PreProcessingContext>(statusDepth, common, type);
+ RETURN_VALUE_IF(!context, nullptr, "failedToCreateContext");
+
+ RetCode ret = context->init(common);
+ if (RetCode::SUCCESS != ret) {
+ LOG(ERROR) << __func__ << " context init ret " << ret;
+ return nullptr;
+ }
+ list.push_back(context);
+ return context;
+ }
+
+ void releaseSession(const PreProcessingEffectType& type, int sessionId) {
+ LOG(DEBUG) << __func__ << type << " sessionId " << sessionId;
+ std::lock_guard lg(mMutex);
+ if (mSessionMap.count(sessionId)) {
+ auto& list = mSessionMap[sessionId];
+ if (!findPreProcessingTypeInList(list, type, true /* remove */)) {
+ LOG(ERROR) << __func__ << " can't find " << type << "in session " << sessionId;
+ return;
+ }
+ if (list.empty()) {
+ mSessionMap.erase(sessionId);
+ }
+ }
+ }
+
+ private:
+ // Lock for mSessionMap access.
+ std::mutex mMutex;
+ // Max session number supported.
+ static constexpr int MAX_PRE_PROC_SESSIONS = 8;
+ std::unordered_map<int /* session ID */, std::vector<std::shared_ptr<PreProcessingContext>>>
+ mSessionMap GUARDED_BY(mMutex);
+};
+} // namespace aidl::android::hardware::audio::effect