vibrator: Add Composition APIs

Bug: 139762802
Test: Manual Invocation
Change-Id: Ie81ee486a3aa7db3d74a69826288c3df96cac6f9
Signed-off-by: Harpreet \"Eli\" Sangha <eliptus@google.com>
diff --git a/cmds/idlcli/vibrator/CommandCompose.cpp b/cmds/idlcli/vibrator/CommandCompose.cpp
new file mode 100644
index 0000000..705e40b
--- /dev/null
+++ b/cmds/idlcli/vibrator/CommandCompose.cpp
@@ -0,0 +1,101 @@
+/*
+ * 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.toString8();
+            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