michael@0: /*
michael@0:  * Copyright (C) 2012 The Android Open Source Project
michael@0:  *
michael@0:  * Licensed under the Apache License, Version 2.0 (the "License");
michael@0:  * you may not use this file except in compliance with the License.
michael@0:  * You may obtain a copy of the License at
michael@0:  *
michael@0:  *      http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing, software
michael@0:  * distributed under the License is distributed on an "AS IS" BASIS,
michael@0:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
michael@0:  * See the License for the specific language governing permissions and
michael@0:  * limitations under the License.
michael@0:  */
michael@0: 
michael@0: #define LOG_TAG "InputDevice"
michael@0: 
michael@0: #include <stdlib.h>
michael@0: #include <unistd.h>
michael@0: #include <ctype.h>
michael@0: 
michael@0: #include "InputDevice.h"
michael@0: 
michael@0: namespace android {
michael@0: 
michael@0: static const char* CONFIGURATION_FILE_DIR[] = {
michael@0:         "idc/",
michael@0:         "keylayout/",
michael@0:         "keychars/",
michael@0: };
michael@0: 
michael@0: static const char* CONFIGURATION_FILE_EXTENSION[] = {
michael@0:         ".idc",
michael@0:         ".kl",
michael@0:         ".kcm",
michael@0: };
michael@0: 
michael@0: static bool isValidNameChar(char ch) {
michael@0:     return isascii(ch) && (isdigit(ch) || isalpha(ch) || ch == '-' || ch == '_');
michael@0: }
michael@0: 
michael@0: static void appendInputDeviceConfigurationFileRelativePath(String8& path,
michael@0:         const String8& name, InputDeviceConfigurationFileType type) {
michael@0:     path.append(CONFIGURATION_FILE_DIR[type]);
michael@0:     for (size_t i = 0; i < name.length(); i++) {
michael@0:         char ch = name[i];
michael@0:         if (!isValidNameChar(ch)) {
michael@0:             ch = '_';
michael@0:         }
michael@0:         path.append(&ch, 1);
michael@0:     }
michael@0:     path.append(CONFIGURATION_FILE_EXTENSION[type]);
michael@0: }
michael@0: 
michael@0: String8 getInputDeviceConfigurationFilePathByDeviceIdentifier(
michael@0:         const InputDeviceIdentifier& deviceIdentifier,
michael@0:         InputDeviceConfigurationFileType type) {
michael@0:     if (deviceIdentifier.vendor !=0 && deviceIdentifier.product != 0) {
michael@0:         if (deviceIdentifier.version != 0) {
michael@0:             // Try vendor product version.
michael@0:             String8 versionPath(getInputDeviceConfigurationFilePathByName(
michael@0:                     String8::format("Vendor_%04x_Product_%04x_Version_%04x",
michael@0:                             deviceIdentifier.vendor, deviceIdentifier.product,
michael@0:                             deviceIdentifier.version),
michael@0:                     type));
michael@0:             if (!versionPath.isEmpty()) {
michael@0:                 return versionPath;
michael@0:             }
michael@0:         }
michael@0: 
michael@0:         // Try vendor product.
michael@0:         String8 productPath(getInputDeviceConfigurationFilePathByName(
michael@0:                 String8::format("Vendor_%04x_Product_%04x",
michael@0:                         deviceIdentifier.vendor, deviceIdentifier.product),
michael@0:                 type));
michael@0:         if (!productPath.isEmpty()) {
michael@0:             return productPath;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     // Try device name.
michael@0:     return getInputDeviceConfigurationFilePathByName(deviceIdentifier.name, type);
michael@0: }
michael@0: 
michael@0: String8 getInputDeviceConfigurationFilePathByName(
michael@0:         const String8& name, InputDeviceConfigurationFileType type) {
michael@0:     // Search system repository.
michael@0:     String8 path;
michael@0:     path.setTo(getenv("ANDROID_ROOT"));
michael@0:     path.append("/usr/");
michael@0:     appendInputDeviceConfigurationFileRelativePath(path, name, type);
michael@0: #if DEBUG_PROBE
michael@0:     ALOGD("Probing for system provided input device configuration file: path='%s'", path.string());
michael@0: #endif
michael@0:     if (!access(path.string(), R_OK)) {
michael@0: #if DEBUG_PROBE
michael@0:         ALOGD("Found");
michael@0: #endif
michael@0:         return path;
michael@0:     }
michael@0: 
michael@0:     // Search user repository.
michael@0:     // TODO Should only look here if not in safe mode.
michael@0:     path.setTo(getenv("ANDROID_DATA"));
michael@0:     path.append("/system/devices/");
michael@0:     appendInputDeviceConfigurationFileRelativePath(path, name, type);
michael@0: #if DEBUG_PROBE
michael@0:     ALOGD("Probing for system user input device configuration file: path='%s'", path.string());
michael@0: #endif
michael@0:     if (!access(path.string(), R_OK)) {
michael@0: #if DEBUG_PROBE
michael@0:         ALOGD("Found");
michael@0: #endif
michael@0:         return path;
michael@0:     }
michael@0: 
michael@0:     // Not found.
michael@0: #if DEBUG_PROBE
michael@0:     ALOGD("Probe failed to find input device configuration file: name='%s', type=%d",
michael@0:             name.string(), type);
michael@0: #endif
michael@0:     return String8();
michael@0: }
michael@0: 
michael@0: 
michael@0: // --- InputDeviceInfo ---
michael@0: 
michael@0: InputDeviceInfo::InputDeviceInfo() {
michael@0:     initialize(-1, -1, InputDeviceIdentifier(), String8(), false);
michael@0: }
michael@0: 
michael@0: InputDeviceInfo::InputDeviceInfo(const InputDeviceInfo& other) :
michael@0:         mId(other.mId), mGeneration(other.mGeneration), mIdentifier(other.mIdentifier),
michael@0:         mAlias(other.mAlias), mIsExternal(other.mIsExternal), mSources(other.mSources),
michael@0:         mKeyboardType(other.mKeyboardType),
michael@0:         mKeyCharacterMap(other.mKeyCharacterMap),
michael@0:         mHasVibrator(other.mHasVibrator),
michael@0:         mMotionRanges(other.mMotionRanges) {
michael@0: }
michael@0: 
michael@0: InputDeviceInfo::~InputDeviceInfo() {
michael@0: }
michael@0: 
michael@0: void InputDeviceInfo::initialize(int32_t id, int32_t generation,
michael@0:         const InputDeviceIdentifier& identifier, const String8& alias, bool isExternal) {
michael@0:     mId = id;
michael@0:     mGeneration = generation;
michael@0:     mIdentifier = identifier;
michael@0:     mAlias = alias;
michael@0:     mIsExternal = isExternal;
michael@0:     mSources = 0;
michael@0:     mKeyboardType = AINPUT_KEYBOARD_TYPE_NONE;
michael@0:     mHasVibrator = false;
michael@0:     mMotionRanges.clear();
michael@0: }
michael@0: 
michael@0: const InputDeviceInfo::MotionRange* InputDeviceInfo::getMotionRange(
michael@0:         int32_t axis, uint32_t source) const {
michael@0:     size_t numRanges = mMotionRanges.size();
michael@0:     for (size_t i = 0; i < numRanges; i++) {
michael@0:         const MotionRange& range = mMotionRanges.itemAt(i);
michael@0:         if (range.axis == axis && range.source == source) {
michael@0:             return &range;
michael@0:         }
michael@0:     }
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: void InputDeviceInfo::addSource(uint32_t source) {
michael@0:     mSources |= source;
michael@0: }
michael@0: 
michael@0: void InputDeviceInfo::addMotionRange(int32_t axis, uint32_t source, float min, float max,
michael@0:         float flat, float fuzz, float resolution) {
michael@0:     MotionRange range = { axis, source, min, max, flat, fuzz, resolution };
michael@0:     mMotionRanges.add(range);
michael@0: }
michael@0: 
michael@0: void InputDeviceInfo::addMotionRange(const MotionRange& range) {
michael@0:     mMotionRanges.add(range);
michael@0: }
michael@0: 
michael@0: } // namespace android