Input event hub for evdev input HAL module.
InputHub monitors paths for device changes and input events.
InputDeviceManager creates InputDevices and routes input events to
them. InputDevices currently just log these events during development.
InputHost represents a wrapper around the HAL interface.
Change-Id: Ic47d574498eb07bcdcd17812a648539fdf1c69d6
diff --git a/modules/input/evdev/InputHost.h b/modules/input/evdev/InputHost.h
new file mode 100644
index 0000000..129443e
--- /dev/null
+++ b/modules/input/evdev/InputHost.h
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#ifndef ANDROID_INPUT_HOST_H_
+#define ANDROID_INPUT_HOST_H_
+
+#include <hardware/input.h>
+
+namespace android {
+
+/**
+ * Classes in this file wrap the corresponding interfaces in the Input HAL. They
+ * are intended to be lightweight and passed by value. It is still important not
+ * to use an object after a HAL-specific method has freed the underlying
+ * representation.
+ *
+ * See hardware/input.h for details about each of these methods.
+ */
+
+using InputBus = input_bus_t;
+using InputCollectionId = input_collection_id_t;
+using InputDeviceHandle = input_device_handle_t*;
+using InputDeviceIdentifier = input_device_identifier_t*;
+using InputUsage = input_usage_t;
+
+class InputHostBase {
+protected:
+ InputHostBase(input_host_t* host, input_host_callbacks_t cb) : mHost(host), mCallbacks(cb) {}
+ virtual ~InputHostBase() = default;
+
+ input_host_t* mHost;
+ input_host_callbacks_t mCallbacks;
+};
+
+class InputReport : private InputHostBase {
+public:
+ virtual ~InputReport() = default;
+
+ InputReport(const InputReport& rhs) = default;
+ InputReport& operator=(const InputReport& rhs) = default;
+ operator input_report_t*() const { return mReport; }
+
+ void reportEvent(InputDeviceHandle d);
+
+private:
+ friend class InputReportDefinition;
+
+ InputReport(input_host_t* host, input_host_callbacks_t cb, input_report_t* r) :
+ InputHostBase(host, cb), mReport(r) {}
+
+ input_report_t* mReport;
+};
+
+class InputReportDefinition : private InputHostBase {
+public:
+ virtual ~InputReportDefinition() = default;
+
+ InputReportDefinition(const InputReportDefinition& rhs) = default;
+ InputReportDefinition& operator=(const InputReportDefinition& rhs) = default;
+ operator input_report_definition_t*() { return mReportDefinition; }
+
+ void addCollection(InputCollectionId id, int32_t arity);
+ void declareUsage(InputCollectionId id, InputUsage usage, int32_t min, int32_t max,
+ float resolution);
+ void declareUsage(InputCollectionId id, InputUsage* usage, size_t usageCount);
+
+ InputReport allocateReport();
+
+private:
+ friend class InputHost;
+
+ InputReportDefinition(
+ input_host_t* host, input_host_callbacks_t cb, input_report_definition_t* r) :
+ InputHostBase(host, cb), mReportDefinition(r) {}
+
+ input_report_definition_t* mReportDefinition;
+};
+
+class InputDeviceDefinition : private InputHostBase {
+public:
+ virtual ~InputDeviceDefinition() = default;
+
+ InputDeviceDefinition(const InputDeviceDefinition& rhs) = default;
+ InputDeviceDefinition& operator=(const InputDeviceDefinition& rhs) = default;
+ operator input_device_definition_t*() { return mDeviceDefinition; }
+
+ void addReport(InputReportDefinition r);
+
+private:
+ friend class InputHost;
+
+ InputDeviceDefinition(
+ input_host_t* host, input_host_callbacks_t cb, input_device_definition_t* d) :
+ InputHostBase(host, cb), mDeviceDefinition(d) {}
+
+ input_device_definition_t* mDeviceDefinition;
+};
+
+class InputHost : private InputHostBase {
+public:
+ InputHost(input_host_t* host, input_host_callbacks_t cb) : InputHostBase(host, cb) {}
+ virtual ~InputHost() = default;
+
+ InputHost(const InputHost& rhs) = default;
+ InputHost& operator=(const InputHost& rhs) = default;
+
+ InputDeviceIdentifier createDeviceIdentifier(const char* name, int32_t productId,
+ int32_t vendorId, InputBus bus, const char* uniqueId);
+
+ InputDeviceDefinition createDeviceDefinition();
+ InputReportDefinition createInputReportDefinition();
+ InputReportDefinition createOutputReportDefinition();
+
+ InputDeviceHandle registerDevice(InputDeviceIdentifier id, InputDeviceDefinition d);
+ void unregisterDevice(InputDeviceHandle handle);
+};
+
+} // namespace android
+
+#endif // ANDROID_INPUT_HOST_H_