audio: import aidl hal

* hardware/interfaces/audio/aidl/default/ at android-16.0.0_r1.

audio/include/effectFactory-impl/EffectConfig.h

@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2017 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 <functional>
+#include <map>
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include <cutils/properties.h>
+#include <tinyxml2.h>
+
+#include <aidl/android/hardware/audio/effect/Processing.h>
+#include "effect-impl/EffectTypes.h"
+
+namespace aidl::android::hardware::audio::effect {
+
+/**
+ *  Library contains a mapping from library name to path.
+ *  Effect contains a mapping from effect name to Libraries and implementation UUID.
+ *  Pre/post processor contains a mapping from processing name to effect names.
+ */
+class EffectConfig {
+  public:
+    explicit EffectConfig(const std::string& file);
+
+    struct Library {
+        std::string name;  // library name
+        ::aidl::android::media::audio::common::AudioUuid uuid;  // implementation UUID
+        std::optional<::aidl::android::media::audio::common::AudioUuid> type;  // optional type UUID
+    };
+    // <effects>
+    struct EffectLibraries {
+        std::optional<struct Library> proxyLibrary;
+        std::vector<struct Library> libraries;
+    };
+
+    int getSkippedElements() const { return mSkippedElements; }
+    const std::unordered_map<std::string, std::string> getLibraryMap() const { return mLibraryMap; }
+    const std::unordered_map<std::string, struct EffectLibraries> getEffectsMap() const {
+        return mEffectsMap;
+    }
+
+    static bool findUuid(const std::pair<std::string, struct EffectLibraries>& effectElem,
+                         ::aidl::android::media::audio::common::AudioUuid* uuid);
+
+    using ProcessingLibrariesMap = std::map<Processing::Type, std::vector<struct EffectLibraries>>;
+    const ProcessingLibrariesMap& getProcessingMap() const;
+
+  private:
+#ifdef __LP64__
+#define SOUND_FX_PATH "/lib64/soundfx/"
+#else
+#define SOUND_FX_PATH "/lib/soundfx/"
+#endif
+    static constexpr const char* kEffectLibPath[] =
+      { "/odm" SOUND_FX_PATH, "/vendor" SOUND_FX_PATH, "/system" SOUND_FX_PATH };
+
+    static constexpr const char* kEffectLibApexPath = SOUND_FX_PATH;
+#undef SOUND_FX_PATH
+
+    int mSkippedElements;
+    /* Parsed Libraries result */
+    std::unordered_map<std::string, std::string> mLibraryMap;
+    /* Parsed Effects result */
+    std::unordered_map<std::string, struct EffectLibraries> mEffectsMap;
+    /**
+     * For parsed pre/post processing result: {key: AudioStreamType/AudioSource/AudioDevice, value:
+     * EffectLibraries}
+     */
+    ProcessingLibrariesMap mProcessingMap;
+
+    /** @return all `node`s children that are elements and match the tag if provided. */
+    std::vector<std::reference_wrapper<const tinyxml2::XMLElement>> getChildren(
+            const tinyxml2::XMLNode& node, const char* childTag = nullptr);
+
+    /** Parse a library xml note and push the result in mLibraryMap or return false on failure. */
+    bool parseLibrary(const tinyxml2::XMLElement& xml);
+
+    /** Parse an effect from an xml element describing it.
+     * @return true and pushes the effect in mEffectsMap on success, false on failure.
+     */
+    bool parseEffect(const tinyxml2::XMLElement& xml);
+
+    bool parseProcessing(Processing::Type::Tag typeTag, const tinyxml2::XMLElement& xml);
+
+    // Function to parse effect.library name and effect.uuid from xml
+    bool parseLibrary(const tinyxml2::XMLElement& xml, struct Library& library,
+                      bool isProxy = false);
+
+    const char* dump(const tinyxml2::XMLElement& element,
+                     tinyxml2::XMLPrinter&& printer = {}) const;
+
+    bool resolveLibrary(const std::string& path, std::string* resolvedPath);
+
+    std::optional<Processing::Type> stringToProcessingType(Processing::Type::Tag typeTag,
+                                                           const std::string& type,
+                                                           const std::string& address);
+};
+
+}  // namespace aidl::android::hardware::audio::effect