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415 lines
14 KiB
415 lines
14 KiB
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <functional>
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#include <stdint.h>
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#include <sys/types.h>
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#include <unordered_map>
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#include <vector>
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#define LOG_TAG "InputDriver"
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#define LOG_NDEBUG 0
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#include "InputDriver.h"
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#include "InputHost.h"
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#include <hardware/input.h>
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#include <input/InputDevice.h>
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#include <input/PropertyMap.h>
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#include <utils/Log.h>
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#include <utils/String8.h>
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#define INDENT2 " "
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struct input_property_map {
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std::unique_ptr<android::PropertyMap> propertyMap;
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};
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struct input_property {
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android::String8 key;
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android::String8 value;
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};
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struct input_device_identifier {
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const char* name;
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const char* uniqueId;
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input_bus_t bus;
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int32_t vendorId;
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int32_t productId;
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int32_t version;
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};
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struct input_device_definition {
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std::vector<input_report_definition*> reportDefs;
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};
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struct input_device_handle {
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input_device_identifier_t* id;
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input_device_definition_t* def;
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};
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struct input_int_usage {
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input_usage_t usage;
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int32_t min;
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int32_t max;
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float resolution;
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};
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struct input_collection {
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int32_t arity;
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std::vector<input_int_usage> intUsages;
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std::vector<input_usage_t> boolUsages;
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};
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struct InputCollectionIdHasher {
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std::size_t operator()(const input_collection_id& id) const {
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return std::hash<int>()(static_cast<int>(id));
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}
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};
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struct input_report_definition {
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std::unordered_map<input_collection_id_t, input_collection, InputCollectionIdHasher> collections;
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};
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namespace android {
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static input_host_callbacks_t kCallbacks = {
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.create_device_identifier = create_device_identifier,
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.create_device_definition = create_device_definition,
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.create_input_report_definition = create_input_report_definition,
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.create_output_report_definition = create_output_report_definition,
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.free_report_definition = free_report_definition,
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.input_device_definition_add_report = input_device_definition_add_report,
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.input_report_definition_add_collection = input_report_definition_add_collection,
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.input_report_definition_declare_usage_int = input_report_definition_declare_usage_int,
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.input_report_definition_declare_usages_bool = input_report_definition_declare_usages_bool,
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.register_device = register_device,
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.input_allocate_report = input_allocate_report,
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.input_report_set_usage_int = input_report_set_usage_int,
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.input_report_set_usage_bool = input_report_set_usage_bool,
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.report_event = report_event,
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.input_get_device_property_map = input_get_device_property_map,
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.input_get_device_property = input_get_device_property,
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.input_get_property_key = input_get_property_key,
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.input_get_property_value = input_get_property_value,
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.input_free_device_property = input_free_device_property,
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.input_free_device_property_map = input_free_device_property_map,
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};
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InputDriver::InputDriver(const char* name) : mName(String8(name)) {
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const hw_module_t* module;
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int err = input_open(&module, name);
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LOG_ALWAYS_FATAL_IF(err != 0, "Input module %s not found", name);
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mHal = reinterpret_cast<const input_module_t*>(module);
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}
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void InputDriver::init() {
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mHal->init(mHal, static_cast<input_host_t*>(this), kCallbacks);
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}
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input_device_identifier_t* InputDriver::createDeviceIdentifier(
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const char* name, int32_t productId, int32_t vendorId,
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input_bus_t bus, const char* uniqueId) {
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auto identifier = new ::input_device_identifier {
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.name = name,
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.uniqueId = uniqueId,
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.bus = bus,
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.vendorId = vendorId,
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.productId = productId,
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};
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// TODO: store this identifier somewhere
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return identifier;
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}
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input_device_definition_t* InputDriver::createDeviceDefinition() {
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return new ::input_device_definition;
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}
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input_report_definition_t* InputDriver::createInputReportDefinition() {
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return new ::input_report_definition;
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}
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input_report_definition_t* InputDriver::createOutputReportDefinition() {
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return new ::input_report_definition;
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}
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void InputDriver::freeReportDefinition(input_report_definition_t* reportDef) {
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delete reportDef;
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}
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void InputDriver::inputDeviceDefinitionAddReport(input_device_definition_t* d,
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input_report_definition_t* r) {
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d->reportDefs.push_back(r);
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}
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void InputDriver::inputReportDefinitionAddCollection(input_report_definition_t* report,
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input_collection_id_t id, int32_t arity) {
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report->collections[id] = {.arity = arity};
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}
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void InputDriver::inputReportDefinitionDeclareUsageInt(input_report_definition_t* report,
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input_collection_id_t id, input_usage_t usage, int32_t min, int32_t max,
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float resolution) {
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if (report->collections.find(id) != report->collections.end()) {
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report->collections[id].intUsages.push_back({
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.usage = usage, .min = min, .max = max, .resolution = resolution});
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}
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}
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void InputDriver::inputReportDefinitionDeclareUsagesBool(input_report_definition_t* report,
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input_collection_id_t id, input_usage_t* usage, size_t usageCount) {
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if (report->collections.find(id) != report->collections.end()) {
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for (size_t i = 0; i < usageCount; ++i) {
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report->collections[id].boolUsages.push_back(usage[i]);
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}
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}
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}
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input_device_handle_t* InputDriver::registerDevice(input_device_identifier_t* id,
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input_device_definition_t* d) {
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ALOGD("Registering device %s with %zu input reports", id->name, d->reportDefs.size());
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// TODO: save this device handle
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return new input_device_handle{ .id = id, .def = d };
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}
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void InputDriver::unregisterDevice(input_device_handle_t* handle) {
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delete handle;
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}
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input_report_t* InputDriver::inputAllocateReport(input_report_definition_t* r) {
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ALOGD("Allocating input report for definition %p", r);
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return nullptr;
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}
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void InputDriver::inputReportSetUsageInt(input_report_t* r, input_collection_id_t id,
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input_usage_t usage, int32_t value, int32_t arity_index) {
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}
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void InputDriver::inputReportSetUsageBool(input_report_t* r, input_collection_id_t id,
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input_usage_t usage, bool value, int32_t arity_index) {
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}
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void InputDriver::reportEvent(input_device_handle_t* d, input_report_t* report) {
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ALOGD("report_event %p for handle %p", report, d);
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}
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input_property_map_t* InputDriver::inputGetDevicePropertyMap(input_device_identifier_t* id) {
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InputDeviceIdentifier idi;
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idi.name = id->name;
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idi.uniqueId = id->uniqueId;
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idi.bus = id->bus;
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idi.vendor = id->vendorId;
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idi.product = id->productId;
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idi.version = id->version;
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std::string configFile =
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getInputDeviceConfigurationFilePathByDeviceIdentifier(idi,
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InputDeviceConfigurationFileType::
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CONFIGURATION);
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if (configFile.empty()) {
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ALOGD("No input device configuration file found for device '%s'.",
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idi.name.c_str());
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} else {
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std::unique_ptr<input_property_map_t> propMap = std::make_unique<input_property_map_t>();
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android::base::Result<std::unique_ptr<PropertyMap>> result =
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PropertyMap::load(configFile.c_str());
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if (!result.ok()) {
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ALOGE("Error loading input device configuration file for device '%s'. "
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"Using default configuration.",
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idi.name.c_str());
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return nullptr;
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}
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propMap->propertyMap = std::move(*result);
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return propMap.release();
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}
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return nullptr;
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}
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input_property_t* InputDriver::inputGetDeviceProperty(input_property_map_t* map,
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const char* key) {
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String8 keyString(key);
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if (map != nullptr) {
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if (map->propertyMap->hasProperty(keyString)) {
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auto prop = new input_property_t();
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if (!map->propertyMap->tryGetProperty(keyString, prop->value)) {
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delete prop;
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return nullptr;
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}
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prop->key = keyString;
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return prop;
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}
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}
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return nullptr;
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}
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const char* InputDriver::inputGetPropertyKey(input_property_t* property) {
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if (property != nullptr) {
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return property->key.string();
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}
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return nullptr;
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}
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const char* InputDriver::inputGetPropertyValue(input_property_t* property) {
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if (property != nullptr) {
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return property->value.string();
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}
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return nullptr;
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}
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void InputDriver::inputFreeDeviceProperty(input_property_t* property) {
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if (property != nullptr) {
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delete property;
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}
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}
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void InputDriver::inputFreeDevicePropertyMap(input_property_map_t* map) {
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if (map != nullptr) {
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delete map;
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}
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}
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void InputDriver::dump(String8& result) {
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result.appendFormat(INDENT2 "HAL Input Driver (%s)\n", mName.string());
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}
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} // namespace android
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// HAL wrapper functions
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namespace android {
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::input_device_identifier_t* create_device_identifier(input_host_t* host,
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const char* name, int32_t product_id, int32_t vendor_id,
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input_bus_t bus, const char* unique_id) {
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auto driver = static_cast<InputDriverInterface*>(host);
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return driver->createDeviceIdentifier(name, product_id, vendor_id, bus, unique_id);
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}
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input_device_definition_t* create_device_definition(input_host_t* host) {
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auto driver = static_cast<InputDriverInterface*>(host);
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return driver->createDeviceDefinition();
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}
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input_report_definition_t* create_input_report_definition(input_host_t* host) {
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auto driver = static_cast<InputDriverInterface*>(host);
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return driver->createInputReportDefinition();
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}
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input_report_definition_t* create_output_report_definition(input_host_t* host) {
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auto driver = static_cast<InputDriverInterface*>(host);
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return driver->createOutputReportDefinition();
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}
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void free_report_definition(input_host_t* host, input_report_definition_t* report_def) {
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auto driver = static_cast<InputDriverInterface*>(host);
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driver->freeReportDefinition(report_def);
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}
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void input_device_definition_add_report(input_host_t* host,
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input_device_definition_t* d, input_report_definition_t* r) {
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auto driver = static_cast<InputDriverInterface*>(host);
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driver->inputDeviceDefinitionAddReport(d, r);
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}
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void input_report_definition_add_collection(input_host_t* host,
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input_report_definition_t* report, input_collection_id_t id, int32_t arity) {
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auto driver = static_cast<InputDriverInterface*>(host);
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driver->inputReportDefinitionAddCollection(report, id, arity);
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}
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void input_report_definition_declare_usage_int(input_host_t* host,
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input_report_definition_t* report, input_collection_id_t id,
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input_usage_t usage, int32_t min, int32_t max, float resolution) {
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auto driver = static_cast<InputDriverInterface*>(host);
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driver->inputReportDefinitionDeclareUsageInt(report, id, usage, min, max, resolution);
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}
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void input_report_definition_declare_usages_bool(input_host_t* host,
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input_report_definition_t* report, input_collection_id_t id,
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input_usage_t* usage, size_t usage_count) {
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auto driver = static_cast<InputDriverInterface*>(host);
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driver->inputReportDefinitionDeclareUsagesBool(report, id, usage, usage_count);
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}
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input_device_handle_t* register_device(input_host_t* host,
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input_device_identifier_t* id, input_device_definition_t* d) {
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auto driver = static_cast<InputDriverInterface*>(host);
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return driver->registerDevice(id, d);
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}
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void unregister_device(input_host_t* host, input_device_handle_t* handle) {
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auto driver = static_cast<InputDriverInterface*>(host);
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driver->unregisterDevice(handle);
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}
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input_report_t* input_allocate_report(input_host_t* host, input_report_definition_t* r) {
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auto driver = static_cast<InputDriverInterface*>(host);
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return driver->inputAllocateReport(r);
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}
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void input_report_set_usage_int(input_host_t* host, input_report_t* r,
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input_collection_id_t id, input_usage_t usage, int32_t value, int32_t arity_index) {
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auto driver = static_cast<InputDriverInterface*>(host);
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driver->inputReportSetUsageInt(r, id, usage, value, arity_index);
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}
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void input_report_set_usage_bool(input_host_t* host, input_report_t* r,
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input_collection_id_t id, input_usage_t usage, bool value, int32_t arity_index) {
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auto driver = static_cast<InputDriverInterface*>(host);
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driver->inputReportSetUsageBool(r, id, usage, value, arity_index);
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}
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void report_event(input_host_t* host, input_device_handle_t* d, input_report_t* report) {
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auto driver = static_cast<InputDriverInterface*>(host);
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driver->reportEvent(d, report);
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}
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input_property_map_t* input_get_device_property_map(input_host_t* host,
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input_device_identifier_t* id) {
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auto driver = static_cast<InputDriverInterface*>(host);
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return driver->inputGetDevicePropertyMap(id);
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}
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input_property_t* input_get_device_property(input_host_t* host, input_property_map_t* map,
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const char* key) {
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auto driver = static_cast<InputDriverInterface*>(host);
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return driver->inputGetDeviceProperty(map, key);
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}
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const char* input_get_property_key(input_host_t* host, input_property_t* property) {
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auto driver = static_cast<InputDriverInterface*>(host);
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return driver->inputGetPropertyKey(property);
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}
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const char* input_get_property_value(input_host_t* host, input_property_t* property) {
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auto driver = static_cast<InputDriverInterface*>(host);
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return driver->inputGetPropertyValue(property);
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}
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void input_free_device_property(input_host_t* host, input_property_t* property) {
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auto driver = static_cast<InputDriverInterface*>(host);
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driver->inputFreeDeviceProperty(property);
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}
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void input_free_device_property_map(input_host_t* host, input_property_map_t* map) {
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auto driver = static_cast<InputDriverInterface*>(host);
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driver->inputFreeDevicePropertyMap(map);
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}
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} // namespace android
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