cmds/idlcli/vibrator/CommandCompose.cpp

/*
 * Copyright (C) 2019 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 "utils.h"
#include "vibrator.h"

namespace android {
namespace idlcli {

class CommandVibrator;

namespace vibrator {

using aidl::CompositeEffect;

class CommandCompose : public Command {
    std::string getDescription() const override { return "Compose vibration."; }

    std::string getUsageSummary() const override { return "<delay> <primitive> <scale> ..."; }

    UsageDetails getUsageDetails() const override {
        UsageDetails details{
                {"<delay>", {"In milliseconds"}},
                {"<primitive>", {"Primitive ID."}},
                {"<scale>", {"0.0 (exclusive) - 1.0 (inclusive)."}},
                {"...", {"May repeat multiple times."}},
        };
        return details;
    }

    Status doArgs(Args &args) override {
        while (!args.empty()) {
            CompositeEffect effect;
            if (auto delay = args.pop<decltype(effect.delayMs)>()) {
                effect.delayMs = *delay;
                std::cout << "Delay: " << effect.delayMs << std::endl;
            } else {
                std::cerr << "Missing or Invalid Delay!" << std::endl;
                return USAGE;
            }
            // TODO: Use range validation when supported by AIDL
            if (auto primitive = args.pop<std::underlying_type_t<decltype(effect.primitive)>>()) {
                effect.primitive = static_cast<decltype(effect.primitive)>(*primitive);
                std::cout << "Primitive: " << toString(effect.primitive) << std::endl;
            } else {
                std::cerr << "Missing or Invalid Primitive!" << std::endl;
                return USAGE;
            }
            if (auto scale = args.pop<decltype(effect.scale)>();
                scale && *scale > 0.0 && scale <= 1.0) {
                effect.scale = *scale;
                std::cout << "Scale: " << effect.scale << std::endl;
            } else {
                std::cerr << "Missing or Invalid Scale!" << std::endl;
                return USAGE;
            }
            mComposite.emplace_back(std::move(effect));
        }
        if (!args.empty()) {
            std::cerr << "Unexpected Arguments!" << std::endl;
            return USAGE;
        }
        return OK;
    }

    Status doMain(Args && /*args*/) override {
        std::string statusStr;
        Status ret;
        if (auto hal = getHal<aidl::IVibrator>()) {
            auto status = hal->call(&aidl::IVibrator::compose, mComposite, nullptr);
            statusStr = status.getDescription();
            ret = status.isOk() ? OK : ERROR;
        } else {
            return UNAVAILABLE;
        }

        std::cout << "Status: " << statusStr << std::endl;

        return ret;
    }

    std::vector<CompositeEffect> mComposite;
};

static const auto Command = CommandRegistry<CommandVibrator>::Register<CommandCompose>("compose");

} // namespace vibrator
} // namespace idlcli
} // namespace android