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/*
* 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.
*/
#include <functional>
#include <stdint.h>
#include <sys/types.h>
#include <unordered_map>
#include <vector>
#define LOG_TAG "InputDriver"
#define LOG_NDEBUG 0
#include "InputDriver.h"
#include "InputHost.h"
#include <hardware/input.h>
#include <input/InputDevice.h>
#include <input/PropertyMap.h>
#include <utils/Log.h>
#include <utils/String8.h>
#define INDENT2 " "
struct input_property_map {
std::unique_ptr<android::PropertyMap> propertyMap;
};
struct input_property {
android::String8 key;
android::String8 value;
};
struct input_device_identifier {
const char* name;
const char* uniqueId;
input_bus_t bus;
int32_t vendorId;
int32_t productId;
int32_t version;
};
struct input_device_definition {
std::vector<input_report_definition*> reportDefs;
};
struct input_device_handle {
input_device_identifier_t* id;
input_device_definition_t* def;
};
struct input_int_usage {
input_usage_t usage;
int32_t min;
int32_t max;
float resolution;
};
struct input_collection {
int32_t arity;
std::vector<input_int_usage> intUsages;
std::vector<input_usage_t> boolUsages;
};
struct InputCollectionIdHasher {
std::size_t operator()(const input_collection_id& id) const {
return std::hash<int>()(static_cast<int>(id));
}
};
struct input_report_definition {
std::unordered_map<input_collection_id_t, input_collection, InputCollectionIdHasher> collections;
};
namespace android {
static input_host_callbacks_t kCallbacks = {
.create_device_identifier = create_device_identifier,
.create_device_definition = create_device_definition,
.create_input_report_definition = create_input_report_definition,
.create_output_report_definition = create_output_report_definition,
.free_report_definition = free_report_definition,
.input_device_definition_add_report = input_device_definition_add_report,
.input_report_definition_add_collection = input_report_definition_add_collection,
.input_report_definition_declare_usage_int = input_report_definition_declare_usage_int,
.input_report_definition_declare_usages_bool = input_report_definition_declare_usages_bool,
.register_device = register_device,
.input_allocate_report = input_allocate_report,
.input_report_set_usage_int = input_report_set_usage_int,
.input_report_set_usage_bool = input_report_set_usage_bool,
.report_event = report_event,
.input_get_device_property_map = input_get_device_property_map,
.input_get_device_property = input_get_device_property,
.input_get_property_key = input_get_property_key,
.input_get_property_value = input_get_property_value,
.input_free_device_property = input_free_device_property,
.input_free_device_property_map = input_free_device_property_map,
};
InputDriver::InputDriver(const char* name) : mName(String8(name)) {
const hw_module_t* module;
int err = input_open(&module, name);
LOG_ALWAYS_FATAL_IF(err != 0, "Input module %s not found", name);
mHal = reinterpret_cast<const input_module_t*>(module);
}
void InputDriver::init() {
mHal->init(mHal, static_cast<input_host_t*>(this), kCallbacks);
}
input_device_identifier_t* InputDriver::createDeviceIdentifier(
const char* name, int32_t productId, int32_t vendorId,
input_bus_t bus, const char* uniqueId) {
auto identifier = new ::input_device_identifier {
.name = name,
.uniqueId = uniqueId,
.bus = bus,
.vendorId = vendorId,
.productId = productId,
};
// TODO: store this identifier somewhere
return identifier;
}
input_device_definition_t* InputDriver::createDeviceDefinition() {
return new ::input_device_definition;
}
input_report_definition_t* InputDriver::createInputReportDefinition() {
return new ::input_report_definition;
}
input_report_definition_t* InputDriver::createOutputReportDefinition() {
return new ::input_report_definition;
}
void InputDriver::freeReportDefinition(input_report_definition_t* reportDef) {
delete reportDef;
}
void InputDriver::inputDeviceDefinitionAddReport(input_device_definition_t* d,
input_report_definition_t* r) {
d->reportDefs.push_back(r);
}
void InputDriver::inputReportDefinitionAddCollection(input_report_definition_t* report,
input_collection_id_t id, int32_t arity) {
report->collections[id] = {.arity = arity};
}
void InputDriver::inputReportDefinitionDeclareUsageInt(input_report_definition_t* report,
input_collection_id_t id, input_usage_t usage, int32_t min, int32_t max,
float resolution) {
if (report->collections.find(id) != report->collections.end()) {
report->collections[id].intUsages.push_back({
.usage = usage, .min = min, .max = max, .resolution = resolution});
}
}
void InputDriver::inputReportDefinitionDeclareUsagesBool(input_report_definition_t* report,
input_collection_id_t id, input_usage_t* usage, size_t usageCount) {
if (report->collections.find(id) != report->collections.end()) {
for (size_t i = 0; i < usageCount; ++i) {
report->collections[id].boolUsages.push_back(usage[i]);
}
}
}
input_device_handle_t* InputDriver::registerDevice(input_device_identifier_t* id,
input_device_definition_t* d) {
ALOGD("Registering device %s with %zu input reports", id->name, d->reportDefs.size());
// TODO: save this device handle
return new input_device_handle{ .id = id, .def = d };
}
void InputDriver::unregisterDevice(input_device_handle_t* handle) {
delete handle;
}
input_report_t* InputDriver::inputAllocateReport(input_report_definition_t* r) {
ALOGD("Allocating input report for definition %p", r);
return nullptr;
}
void InputDriver::inputReportSetUsageInt(input_report_t* r, input_collection_id_t id,
input_usage_t usage, int32_t value, int32_t arity_index) {
}
void InputDriver::inputReportSetUsageBool(input_report_t* r, input_collection_id_t id,
input_usage_t usage, bool value, int32_t arity_index) {
}
void InputDriver::reportEvent(input_device_handle_t* d, input_report_t* report) {
ALOGD("report_event %p for handle %p", report, d);
}
input_property_map_t* InputDriver::inputGetDevicePropertyMap(input_device_identifier_t* id) {
InputDeviceIdentifier idi;
idi.name = id->name;
idi.uniqueId = id->uniqueId;
idi.bus = id->bus;
idi.vendor = id->vendorId;
idi.product = id->productId;
idi.version = id->version;
std::string configFile =
getInputDeviceConfigurationFilePathByDeviceIdentifier(idi,
InputDeviceConfigurationFileType::
CONFIGURATION);
if (configFile.empty()) {
ALOGD("No input device configuration file found for device '%s'.",
idi.name.c_str());
} else {
std::unique_ptr<input_property_map_t> propMap = std::make_unique<input_property_map_t>();
android::base::Result<std::unique_ptr<PropertyMap>> result =
PropertyMap::load(configFile.c_str());
if (!result.ok()) {
ALOGE("Error loading input device configuration file for device '%s'. "
"Using default configuration.",
idi.name.c_str());
return nullptr;
}
propMap->propertyMap = std::move(*result);
return propMap.release();
}
return nullptr;
}
input_property_t* InputDriver::inputGetDeviceProperty(input_property_map_t* map,
const char* key) {
String8 keyString(key);
if (map != nullptr) {
if (map->propertyMap->hasProperty(keyString)) {
auto prop = new input_property_t();
if (!map->propertyMap->tryGetProperty(keyString, prop->value)) {
delete prop;
return nullptr;
}
prop->key = keyString;
return prop;
}
}
return nullptr;
}
const char* InputDriver::inputGetPropertyKey(input_property_t* property) {
if (property != nullptr) {
return property->key.string();
}
return nullptr;
}
const char* InputDriver::inputGetPropertyValue(input_property_t* property) {
if (property != nullptr) {
return property->value.string();
}
return nullptr;
}
void InputDriver::inputFreeDeviceProperty(input_property_t* property) {
if (property != nullptr) {
delete property;
}
}
void InputDriver::inputFreeDevicePropertyMap(input_property_map_t* map) {
if (map != nullptr) {
delete map;
}
}
void InputDriver::dump(String8& result) {
result.appendFormat(INDENT2 "HAL Input Driver (%s)\n", mName.string());
}
} // namespace android
// HAL wrapper functions
namespace android {
::input_device_identifier_t* create_device_identifier(input_host_t* host,
const char* name, int32_t product_id, int32_t vendor_id,
input_bus_t bus, const char* unique_id) {
auto driver = static_cast<InputDriverInterface*>(host);
return driver->createDeviceIdentifier(name, product_id, vendor_id, bus, unique_id);
}
input_device_definition_t* create_device_definition(input_host_t* host) {
auto driver = static_cast<InputDriverInterface*>(host);
return driver->createDeviceDefinition();
}
input_report_definition_t* create_input_report_definition(input_host_t* host) {
auto driver = static_cast<InputDriverInterface*>(host);
return driver->createInputReportDefinition();
}
input_report_definition_t* create_output_report_definition(input_host_t* host) {
auto driver = static_cast<InputDriverInterface*>(host);
return driver->createOutputReportDefinition();
}
void free_report_definition(input_host_t* host, input_report_definition_t* report_def) {
auto driver = static_cast<InputDriverInterface*>(host);
driver->freeReportDefinition(report_def);
}
void input_device_definition_add_report(input_host_t* host,
input_device_definition_t* d, input_report_definition_t* r) {
auto driver = static_cast<InputDriverInterface*>(host);
driver->inputDeviceDefinitionAddReport(d, r);
}
void input_report_definition_add_collection(input_host_t* host,
input_report_definition_t* report, input_collection_id_t id, int32_t arity) {
auto driver = static_cast<InputDriverInterface*>(host);
driver->inputReportDefinitionAddCollection(report, id, arity);
}
void input_report_definition_declare_usage_int(input_host_t* host,
input_report_definition_t* report, input_collection_id_t id,
input_usage_t usage, int32_t min, int32_t max, float resolution) {
auto driver = static_cast<InputDriverInterface*>(host);
driver->inputReportDefinitionDeclareUsageInt(report, id, usage, min, max, resolution);
}
void input_report_definition_declare_usages_bool(input_host_t* host,
input_report_definition_t* report, input_collection_id_t id,
input_usage_t* usage, size_t usage_count) {
auto driver = static_cast<InputDriverInterface*>(host);
driver->inputReportDefinitionDeclareUsagesBool(report, id, usage, usage_count);
}
input_device_handle_t* register_device(input_host_t* host,
input_device_identifier_t* id, input_device_definition_t* d) {
auto driver = static_cast<InputDriverInterface*>(host);
return driver->registerDevice(id, d);
}
void unregister_device(input_host_t* host, input_device_handle_t* handle) {
auto driver = static_cast<InputDriverInterface*>(host);
driver->unregisterDevice(handle);
}
input_report_t* input_allocate_report(input_host_t* host, input_report_definition_t* r) {
auto driver = static_cast<InputDriverInterface*>(host);
return driver->inputAllocateReport(r);
}
void input_report_set_usage_int(input_host_t* host, input_report_t* r,
input_collection_id_t id, input_usage_t usage, int32_t value, int32_t arity_index) {
auto driver = static_cast<InputDriverInterface*>(host);
driver->inputReportSetUsageInt(r, id, usage, value, arity_index);
}
void input_report_set_usage_bool(input_host_t* host, input_report_t* r,
input_collection_id_t id, input_usage_t usage, bool value, int32_t arity_index) {
auto driver = static_cast<InputDriverInterface*>(host);
driver->inputReportSetUsageBool(r, id, usage, value, arity_index);
}
void report_event(input_host_t* host, input_device_handle_t* d, input_report_t* report) {
auto driver = static_cast<InputDriverInterface*>(host);
driver->reportEvent(d, report);
}
input_property_map_t* input_get_device_property_map(input_host_t* host,
input_device_identifier_t* id) {
auto driver = static_cast<InputDriverInterface*>(host);
return driver->inputGetDevicePropertyMap(id);
}
input_property_t* input_get_device_property(input_host_t* host, input_property_map_t* map,
const char* key) {
auto driver = static_cast<InputDriverInterface*>(host);
return driver->inputGetDeviceProperty(map, key);
}
const char* input_get_property_key(input_host_t* host, input_property_t* property) {
auto driver = static_cast<InputDriverInterface*>(host);
return driver->inputGetPropertyKey(property);
}
const char* input_get_property_value(input_host_t* host, input_property_t* property) {
auto driver = static_cast<InputDriverInterface*>(host);
return driver->inputGetPropertyValue(property);
}
void input_free_device_property(input_host_t* host, input_property_t* property) {
auto driver = static_cast<InputDriverInterface*>(host);
driver->inputFreeDeviceProperty(property);
}
void input_free_device_property_map(input_host_t* host, input_property_map_t* map) {
auto driver = static_cast<InputDriverInterface*>(host);
driver->inputFreeDevicePropertyMap(map);
}
} // namespace android