Revert "libaudiohal@aidl: Make IHalAdapterVendorExtension mandatory"

Revert submission 2929484-fix-b-321651892-ihaladapter

Reason for revert: possible cause of b/323385784

Reverted changes: /q/submissionid:2929484-fix-b-321651892-ihaladapter

Change-Id: Ifaafeec27bee08648a3ced6d507b99454c317692
diff --git a/media/libaudiohal/impl/ConversionHelperAidl.cpp b/media/libaudiohal/impl/ConversionHelperAidl.cpp
index 7a32811..46abfda 100644
--- a/media/libaudiohal/impl/ConversionHelperAidl.cpp
+++ b/media/libaudiohal/impl/ConversionHelperAidl.cpp
@@ -37,6 +37,10 @@
     using ParameterScope = IHalAdapterVendorExtension::ParameterScope;
     if (parameterKeys.size() == 0) return OK;
     const String8 rawKeys = parameterKeys.keysToString();
+    if (vendorExt == nullptr) {
+        ALOGW("%s: unknown parameters, ignored: \"%s\"", __func__, rawKeys.c_str());
+        return OK;
+    }
 
     std::vector<std::string> parameterIds;
     RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(vendorExt->parseVendorParameterIds(
@@ -81,6 +85,10 @@
     using ParameterScope = IHalAdapterVendorExtension::ParameterScope;
     if (parameters.size() == 0) return OK;
     const String8 rawKeysAndValues = parameters.toString();
+    if (vendorExt == nullptr) {
+        ALOGW("%s: unknown parameters, ignored: \"%s\"", __func__, rawKeysAndValues.c_str());
+        return OK;
+    }
 
     std::vector<VendorParameter> syncParameters, asyncParameters;
     RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(vendorExt->parseVendorParameters(
diff --git a/media/libaudiohal/impl/DeviceHalAidl.cpp b/media/libaudiohal/impl/DeviceHalAidl.cpp
index fe44ecd..2af18cc 100644
--- a/media/libaudiohal/impl/DeviceHalAidl.cpp
+++ b/media/libaudiohal/impl/DeviceHalAidl.cpp
@@ -1024,11 +1024,15 @@
     (void)VALUE_OR_RETURN_STATUS(filterOutAndProcessParameter<String8>(
                     parameters, String8(AudioParameter::keyReconfigA2dp),
                     [&](const String8& value) -> status_t {
-                        std::vector<VendorParameter> result;
-                        RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(
-                                mVendorExt->parseBluetoothA2dpReconfigureOffload(
-                                        std::string(value.c_str()), &result)));
-                        reconfigureOffload = std::move(result);
+                        if (mVendorExt != nullptr) {
+                            std::vector<VendorParameter> result;
+                            RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(
+                                    mVendorExt->parseBluetoothA2dpReconfigureOffload(
+                                            std::string(value.c_str()), &result)));
+                            reconfigureOffload = std::move(result);
+                        } else {
+                            reconfigureOffload = std::vector<VendorParameter>();
+                        }
                         return OK;
                     }));
     if (mBluetoothA2dp != nullptr && a2dpEnabled.has_value()) {
diff --git a/media/libaudiohal/impl/DevicesFactoryHalAidl.cpp b/media/libaudiohal/impl/DevicesFactoryHalAidl.cpp
index 24df32d..3dbc14a 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalAidl.cpp
+++ b/media/libaudiohal/impl/DevicesFactoryHalAidl.cpp
@@ -23,7 +23,6 @@
 //#define LOG_NDEBUG 0
 
 #include <aidl/android/hardware/audio/core/IModule.h>
-#include <aidl/android/media/audio/BnHalAdapterVendorExtension.h>
 #include <android/binder_manager.h>
 #include <media/AidlConversionNdkCpp.h>
 #include <media/AidlConversionUtil.h>
@@ -36,7 +35,6 @@
 using aidl::android::hardware::audio::core::IConfig;
 using aidl::android::hardware::audio::core::IModule;
 using aidl::android::hardware::audio::core::SurroundSoundConfig;
-using aidl::android::hardware::audio::core::VendorParameter;
 using aidl::android::media::audio::common::AudioHalEngineConfig;
 using aidl::android::media::audio::IHalAdapterVendorExtension;
 using android::detail::AudioHalVersionInfo;
@@ -64,86 +62,10 @@
     return cpp;
 }
 
-class HalAdapterVendorExtensionWrapper :
-            public ::aidl::android::media::audio::BnHalAdapterVendorExtension {
-  private:
-    ndk::ScopedAStatus parseVendorParameterIds(ParameterScope in_scope,
-                                               const std::string& in_rawKeys,
-                                               std::vector<std::string>* _aidl_return) override {
-        ndk::ScopedAStatus status;
-        while (true) {
-            status = get()->parseVendorParameterIds(in_scope, in_rawKeys, _aidl_return);
-            if (status.getStatus() != STATUS_DEAD_OBJECT) break;
-            mVendorExt.reset();
-        }
-        return status;
-    }
-
-    ndk::ScopedAStatus parseVendorParameters(
-            ParameterScope in_scope, const std::string& in_rawKeysAndValues,
-            std::vector<VendorParameter>* out_syncParameters,
-            std::vector<VendorParameter>* out_asyncParameters) override {
-        ndk::ScopedAStatus status;
-        while (true) {
-            status = get()->parseVendorParameters(in_scope, in_rawKeysAndValues,
-                    out_syncParameters, out_asyncParameters);
-            if (status.getStatus() != STATUS_DEAD_OBJECT) break;
-            mVendorExt.reset();
-        }
-        return status;
-    }
-
-    ndk::ScopedAStatus parseBluetoothA2dpReconfigureOffload(
-            const std::string& in_rawValue, std::vector<VendorParameter>* _aidl_return) override {
-        ndk::ScopedAStatus status;
-        while (true) {
-            status = get()->parseBluetoothA2dpReconfigureOffload(in_rawValue, _aidl_return);
-            if (status.getStatus() != STATUS_DEAD_OBJECT) break;
-            mVendorExt.reset();
-        }
-        return status;
-    }
-
-    ndk::ScopedAStatus parseBluetoothLeReconfigureOffload(const std::string& in_rawValue,
-            std::vector<VendorParameter>* _aidl_return) override {
-        ndk::ScopedAStatus status;
-        while (true) {
-            status = get()->parseBluetoothLeReconfigureOffload(in_rawValue, _aidl_return);
-            if (status.getStatus() != STATUS_DEAD_OBJECT) break;
-            mVendorExt.reset();
-        }
-        return status;
-    }
-
-    ndk::ScopedAStatus processVendorParameters(ParameterScope in_scope,
-                                               const std::vector<VendorParameter>& in_parameters,
-                                               std::string* _aidl_return) override {
-        ndk::ScopedAStatus status;
-        while (true) {
-            status = get()->processVendorParameters(in_scope, in_parameters, _aidl_return);
-            if (status.getStatus() != STATUS_DEAD_OBJECT) break;
-            mVendorExt.reset();
-        }
-        return status;
-    }
-
-    std::shared_ptr<IHalAdapterVendorExtension> get() {
-        if (!mVendorExt) {
-            auto serviceName = std::string(IHalAdapterVendorExtension::descriptor) + "/default";
-            mVendorExt = IHalAdapterVendorExtension::fromBinder(ndk::SpAIBinder(
-                            AServiceManager_waitForService(serviceName.c_str())));
-        }
-        return mVendorExt;
-    }
-
-    std::shared_ptr<::aidl::android::media::audio::IHalAdapterVendorExtension> mVendorExt;
-};
-
 }  // namespace
 
 DevicesFactoryHalAidl::DevicesFactoryHalAidl(std::shared_ptr<IConfig> config)
-        : mConfig(std::move(config)),
-          mVendorExt(ndk::SharedRefBase::make<HalAdapterVendorExtensionWrapper>()) {
+    : mConfig(std::move(config)) {
 }
 
 status_t DevicesFactoryHalAidl::getDeviceNames(std::vector<std::string> *names) {
@@ -188,7 +110,7 @@
         ALOGE("%s fromBinder %s failed", __func__, serviceName.c_str());
         return NO_INIT;
     }
-    *device = sp<DeviceHalAidl>::make(name, service, mVendorExt);
+    *device = sp<DeviceHalAidl>::make(name, service, getVendorExtension());
     return OK;
 }
 
@@ -227,6 +149,20 @@
     return OK;
 }
 
+std::shared_ptr<IHalAdapterVendorExtension> DevicesFactoryHalAidl::getVendorExtension() {
+    if (!mVendorExt.has_value()) {
+        auto serviceName = std::string(IHalAdapterVendorExtension::descriptor) + "/default";
+        if (AServiceManager_isDeclared(serviceName.c_str())) {
+            mVendorExt = std::shared_ptr<IHalAdapterVendorExtension>(
+                    IHalAdapterVendorExtension::fromBinder(ndk::SpAIBinder(
+                                    AServiceManager_waitForService(serviceName.c_str()))));
+        } else {
+            mVendorExt = nullptr;
+        }
+    }
+    return mVendorExt.value();
+}
+
 // Main entry-point to the shared library.
 extern "C" __attribute__((visibility("default"))) void* createIDevicesFactoryImpl() {
     auto serviceName = std::string(IConfig::descriptor) + "/default";
diff --git a/media/libaudiohal/impl/DevicesFactoryHalAidl.h b/media/libaudiohal/impl/DevicesFactoryHalAidl.h
index 2a3a9e7..17bfe43 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalAidl.h
+++ b/media/libaudiohal/impl/DevicesFactoryHalAidl.h
@@ -45,7 +45,10 @@
 
   private:
     const std::shared_ptr<::aidl::android::hardware::audio::core::IConfig> mConfig;
-    const std::shared_ptr<::aidl::android::media::audio::IHalAdapterVendorExtension> mVendorExt;
+    std::optional<std::shared_ptr<::aidl::android::media::audio::IHalAdapterVendorExtension>>
+            mVendorExt;
+
+    std::shared_ptr<::aidl::android::media::audio::IHalAdapterVendorExtension> getVendorExtension();
 
     ~DevicesFactoryHalAidl() = default;
 };
diff --git a/media/libaudiohal/tests/CoreAudioHalAidl_test.cpp b/media/libaudiohal/tests/CoreAudioHalAidl_test.cpp
index 3541078..1204a3b 100644
--- a/media/libaudiohal/tests/CoreAudioHalAidl_test.cpp
+++ b/media/libaudiohal/tests/CoreAudioHalAidl_test.cpp
@@ -443,6 +443,21 @@
     EXPECT_EQ(ScreenRotation::DEG_0, mModule->getScreenRotation());
 }
 
+// Without a vendor extension, any unrecognized parameters must be ignored.
+TEST_F(DeviceHalAidlTest, VendorParameterIgnored) {
+    EXPECT_EQ(0UL, mModule->getAsyncParameters().size());
+    EXPECT_EQ(0UL, mModule->getSyncParameters().size());
+    EXPECT_EQ(OK, mDevice->setParameters(createParameterString("random_name", "random_value")));
+    EXPECT_EQ(0UL, mModule->getAsyncParameters().size());
+    EXPECT_EQ(0UL, mModule->getSyncParameters().size());
+
+    EXPECT_EQ(0UL, mModule->getRetrievedParameterIds().size());
+    String8 values;
+    EXPECT_EQ(OK, mDevice->getParameters(String8("random_name"), &values));
+    EXPECT_EQ(0UL, mModule->getRetrievedParameterIds().size());
+    EXPECT_EQ(0UL, values.length());
+}
+
 class DeviceHalAidlVendorParametersTest : public testing::Test {
   public:
     void SetUp() override {
diff --git a/services/audioparameterparser/Android.bp b/services/audioparameterparser/Android.bp
deleted file mode 100644
index a7bfa4b..0000000
--- a/services/audioparameterparser/Android.bp
+++ /dev/null
@@ -1,69 +0,0 @@
-// Copyright (C) 2024 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.
-
-package {
-    default_applicable_licenses: [
-        "frameworks_av_services_audioparameterparser_license",
-    ],
-}
-
-// Added automatically by a large-scale-change
-// See: http://go/android-license-faq
-license {
-    name: "frameworks_av_services_audioparameterparser_license",
-    visibility: [":__subpackages__"],
-    license_kinds: [
-        "SPDX-license-identifier-Apache-2.0",
-    ],
-    license_text: [
-        "NOTICE",
-    ],
-}
-
-cc_defaults {
-    name: "android.hardware.audio.parameter_parser.example_defaults",
-    defaults: [
-        "latest_android_hardware_audio_core_ndk_shared",
-    ],
-
-    shared_libs: [
-        "av-audio-types-aidl-ndk",
-        "libbase",
-        "libbinder_ndk",
-    ],
-
-    cflags: [
-        "-Wall",
-        "-Wextra",
-        "-Werror",
-        "-Wthread-safety",
-    ],
-}
-
-cc_binary {
-    name: "android.hardware.audio.parameter_parser.example_service",
-    system_ext_specific: true,
-    relative_install_path: "hw",
-
-    init_rc: ["android.hardware.audio.parameter_parser.example_service.rc"],
-
-    defaults: [
-        "android.hardware.audio.parameter_parser.example_defaults",
-    ],
-
-    srcs: [
-        "ParameterParser.cpp",
-        "main.cpp",
-    ],
-}
diff --git a/services/audioparameterparser/NOTICE b/services/audioparameterparser/NOTICE
deleted file mode 100644
index 44158cb..0000000
--- a/services/audioparameterparser/NOTICE
+++ /dev/null
@@ -1,190 +0,0 @@
-
-   Copyright (c) 2005-2024, 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.
-
-   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.
-
-
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
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-
-      "License" shall mean the terms and conditions for use, reproduction,
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-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
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diff --git a/services/audioparameterparser/ParameterParser.cpp b/services/audioparameterparser/ParameterParser.cpp
deleted file mode 100644
index 8d6a64f..0000000
--- a/services/audioparameterparser/ParameterParser.cpp
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (C) 2024 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.
- */
-
-#include "ParameterParser.h"
-
-#define LOG_TAG "Audio_ParameterParser"
-#include <android-base/logging.h>
-
-namespace vendor::audio::parserservice {
-
-using ::aidl::android::hardware::audio::core::VendorParameter;
-using ParameterScope = ::aidl::android::media::audio::IHalAdapterVendorExtension::ParameterScope;
-
-::ndk::ScopedAStatus ParameterParser::parseVendorParameterIds(ParameterScope in_scope,
-                                                              const std::string& in_rawKeys,
-                                                              std::vector<std::string>*) {
-    LOG(DEBUG) << __func__ << ": scope: " << toString(in_scope) << ", keys: " << in_rawKeys;
-    return ::ndk::ScopedAStatus::ok();
-}
-
-::ndk::ScopedAStatus ParameterParser::parseVendorParameters(ParameterScope in_scope,
-                                                            const std::string& in_rawKeysAndValues,
-                                                            std::vector<VendorParameter>*,
-                                                            std::vector<VendorParameter>*) {
-    LOG(DEBUG) << __func__ << ": scope: " << toString(in_scope)
-               << ", keys/values: " << in_rawKeysAndValues;
-    return ::ndk::ScopedAStatus::ok();
-}
-
-::ndk::ScopedAStatus ParameterParser::parseBluetoothA2dpReconfigureOffload(
-        const std::string& in_rawValue, std::vector<VendorParameter>*) {
-    LOG(DEBUG) << __func__ << ": value: " << in_rawValue;
-    return ::ndk::ScopedAStatus::ok();
-}
-
-::ndk::ScopedAStatus ParameterParser::parseBluetoothLeReconfigureOffload(
-        const std::string& in_rawValue, std::vector<VendorParameter>*) {
-    LOG(DEBUG) << __func__ << ": value: " << in_rawValue;
-    return ::ndk::ScopedAStatus::ok();
-}
-
-::ndk::ScopedAStatus ParameterParser::processVendorParameters(
-        ParameterScope in_scope, const std::vector<VendorParameter>& in_parameters, std::string*) {
-    LOG(DEBUG) << __func__ << ": scope: " << toString(in_scope)
-               << ", parameters: " << ::android::internal::ToString(in_parameters);
-    return ::ndk::ScopedAStatus::ok();
-}
-
-}  // namespace vendor::audio::parserservice
diff --git a/services/audioparameterparser/ParameterParser.h b/services/audioparameterparser/ParameterParser.h
deleted file mode 100644
index 1e0e333..0000000
--- a/services/audioparameterparser/ParameterParser.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2024 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 <aidl/android/media/audio/BnHalAdapterVendorExtension.h>
-
-namespace vendor::audio::parserservice {
-
-class ParameterParser : public ::aidl::android::media::audio::BnHalAdapterVendorExtension {
-  public:
-    ParameterParser() = default;
-
-  private:
-    ::ndk::ScopedAStatus parseVendorParameterIds(
-            ::aidl::android::media::audio::IHalAdapterVendorExtension::ParameterScope in_scope,
-            const std::string& in_rawKeys, std::vector<std::string>* _aidl_return) override;
-
-    ::ndk::ScopedAStatus parseVendorParameters(
-            ::aidl::android::media::audio::IHalAdapterVendorExtension::ParameterScope in_scope,
-            const std::string& in_rawKeysAndValues,
-            std::vector<::aidl::android::hardware::audio::core::VendorParameter>*
-                    out_syncParameters,
-            std::vector<::aidl::android::hardware::audio::core::VendorParameter>*
-                    out_asyncParameters) override;
-
-    ::ndk::ScopedAStatus parseBluetoothA2dpReconfigureOffload(
-            const std::string& in_rawValue,
-            std::vector<::aidl::android::hardware::audio::core::VendorParameter>* _aidl_return)
-            override;
-
-    ::ndk::ScopedAStatus parseBluetoothLeReconfigureOffload(
-            const std::string& in_rawValue,
-            std::vector<::aidl::android::hardware::audio::core::VendorParameter>* _aidl_return)
-            override;
-
-    ::ndk::ScopedAStatus processVendorParameters(
-            ::aidl::android::media::audio::IHalAdapterVendorExtension::ParameterScope in_scope,
-            const std::vector<::aidl::android::hardware::audio::core::VendorParameter>&
-                    in_parameters,
-            std::string* _aidl_return) override;
-};
-
-}  // namespace vendor::audio::parserservice
diff --git a/services/audioparameterparser/android.hardware.audio.parameter_parser.example_service.rc b/services/audioparameterparser/android.hardware.audio.parameter_parser.example_service.rc
deleted file mode 100644
index b6aca5c..0000000
--- a/services/audioparameterparser/android.hardware.audio.parameter_parser.example_service.rc
+++ /dev/null
@@ -1,6 +0,0 @@
-service audio_parameter_parser_service /system_ext/bin/hw/android.hardware.audio.parameter_parser.example_service
-    class core
-    user audioserver
-    group media
-    ioprio rt 4
-    task_profiles ProcessCapacityHigh HighPerformance
diff --git a/services/audioparameterparser/main.cpp b/services/audioparameterparser/main.cpp
deleted file mode 100644
index d22eb55..0000000
--- a/services/audioparameterparser/main.cpp
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (C) 2024 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.
- */
-
-#define LOG_TAG "Audio_ParameterParser"
-#include <android-base/logging.h>
-#include <android/binder_manager.h>
-#include <android/binder_process.h>
-
-#include "ParameterParser.h"
-
-using vendor::audio::parserservice::ParameterParser;
-
-int main() {
-    // This is a debug implementation, always enable debug logging.
-    android::base::SetMinimumLogSeverity(::android::base::DEBUG);
-
-    auto parser = ndk::SharedRefBase::make<ParameterParser>();
-    const std::string parserFqn =
-            std::string().append(ParameterParser::descriptor).append("/default");
-    binder_status_t status =
-            AServiceManager_addService(parser->asBinder().get(), parserFqn.c_str());
-    if (status != STATUS_OK) {
-        LOG(ERROR) << "failed to register service for \"" << parserFqn << "\"";
-    }
-
-    ABinderProcess_joinThreadPool();
-    return EXIT_FAILURE;  // should not reach
-}