AIDL effect: Minimal example implementation

    ],

    ],

    srcs: ["main.cpp"],

    srcs: ["main.cpp"],

}

}

cc_library_static {

    name: "libaudioeffectserviceexampleimpl",

    vendor: true,

    shared_libs: [

        "libbase",

        "libbinder_ndk",

        "android.media.audio.common.types-V1-ndk",

        "android.hardware.audio.effect-V1-ndk",

    ],

    export_include_dirs: ["include"],

    srcs: [

        "EffectFactory.cpp",

    ],

    visibility: [

        ":__subpackages__",

    ],

}

cc_binary {

    name: "android.hardware.audio.effect.service-aidl.example",

    relative_install_path: "hw",

    init_rc: ["android.hardware.audio.effect.service-aidl.example.rc"],

    vintf_fragments: ["android.hardware.audio.effect.service-aidl.xml"],

    vendor: true,

    shared_libs: [

        "libbase",

        "libbinder_ndk",

        "android.media.audio.common.types-V1-ndk",

        "android.hardware.audio.effect-V1-ndk",

    ],

    static_libs: [

        "libaudioeffectserviceexampleimpl",

    ],

    cflags: [

        "-Wall",

        "-Wextra",

        "-Werror",

        "-Wthread-safety",

    ],

    srcs: ["EffectMain.cpp"],

}

/*

 * Copyright (C) 2022 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 "AHAL_EffectFactory"

#include <android-base/logging.h>

#include "effectFactory-impl/EffectFactory.h"

#include "equalizer-impl/Equalizer.h"

#include "visualizer-impl/Visualizer.h"

using aidl::android::media::audio::common::AudioUuid;

namespace aidl::android::hardware::audio::effect {

Factory::Factory() {

    // TODO: implement this with xml parser on audio_effect.xml, and filter with optional

    // parameters.

    Descriptor::Identity id;

    id.type = {static_cast<int32_t>(0x0bed4300),

               0xddd6,

               0x11db,

               0x8f34,

               {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}};

    id.uuid = EqualizerUUID;

    mIdentityList.push_back(id);

    id.type = {static_cast<int32_t>(0xd3467faa),

               0xacc7,

               0x4d34,

               0xacaf,

               {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}};

    id.uuid = VisualizerUUID;

    mIdentityList.push_back(id);

}

ndk::ScopedAStatus Factory::queryEffects(const std::optional<AudioUuid>& in_type,

                                         const std::optional<AudioUuid>& in_instance,

                                         std::vector<Descriptor::Identity>* _aidl_return) {

    std::copy_if(mIdentityList.begin(), mIdentityList.end(), std::back_inserter(*_aidl_return),

                 [&](auto& desc) {

                     return (!in_type.has_value() || in_type.value() == desc.type) &&

                            (!in_instance.has_value() || in_instance.value() == desc.uuid);

                 });

    return ndk::ScopedAStatus::ok();

}

}  // namespace aidl::android::hardware::audio::effect

/*

 * Copyright (C) 2022 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 "effectFactory-impl/EffectFactory.h"

#include <android-base/logging.h>

#include <android/binder_manager.h>

#include <android/binder_process.h>

int main() {

    // This is a debug implementation, always enable debug logging.

    android::base::SetMinimumLogSeverity(::android::base::DEBUG);

    ABinderProcess_setThreadPoolMaxThreadCount(16);

    auto effectFactory =

            ndk::SharedRefBase::make<aidl::android::hardware::audio::effect::Factory>();

    std::string serviceName = std::string() + effectFactory->descriptor + "/default";

    binder_status_t status =

            AServiceManager_addService(effectFactory->asBinder().get(), serviceName.c_str());

    CHECK_EQ(STATUS_OK, status);

    LOG(DEBUG) << __func__ << ": effectFactoryName:" << serviceName;

    ABinderProcess_joinThreadPool();

    return EXIT_FAILURE;  // should not reach

}

service vendor.audio-effect-hal-aidl /vendor/bin/hw/android.hardware.audio.effect.service-aidl.example

    class hal

    user audioserver

    # media gid needed for /dev/fm (radio) and for /data/misc/media (tee)

    group audio camera drmrpc inet media mediadrm net_bt net_bt_admin net_bw_acct wakelock context_hub

    capabilities BLOCK_SUSPEND

    ioprio rt 4

    task_profiles ProcessCapacityHigh HighPerformance

    onrestart restart audioserver

<manifest version="1.0" type="device">

  <hal format="aidl">

    <name>android.hardware.audio.effect</name>

    <version>1</version>

    <fqname>IFactory/default</fqname>

  </hal>

</manifest>