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/*
* Copyright (C) 2012 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.
*/
#define LOG_TAG "InputDevice"
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <input/InputDevice.h>
namespace android {
static const char* CONFIGURATION_FILE_DIR[] = {
"idc/",
"keylayout/",
"keychars/",
};
static const char* CONFIGURATION_FILE_EXTENSION[] = {
".idc",
".kl",
".kcm",
};
static bool isValidNameChar(char ch) {
return isascii(ch) && (isdigit(ch) || isalpha(ch) || ch == '-' || ch == '_');
}
static void appendInputDeviceConfigurationFileRelativePath(String8& path,
const String8& name, InputDeviceConfigurationFileType type) {
path.append(CONFIGURATION_FILE_DIR[type]);
for (size_t i = 0; i < name.length(); i++) {
char ch = name[i];
if (!isValidNameChar(ch)) {
ch = '_';
}
path.append(&ch, 1);
}
path.append(CONFIGURATION_FILE_EXTENSION[type]);
}
String8 getInputDeviceConfigurationFilePathByDeviceIdentifier(
const InputDeviceIdentifier& deviceIdentifier,
InputDeviceConfigurationFileType type) {
if (deviceIdentifier.vendor !=0 && deviceIdentifier.product != 0) {
if (deviceIdentifier.version != 0) {
// Try vendor product version.
String8 versionPath(getInputDeviceConfigurationFilePathByName(
String8::format("Vendor_%04x_Product_%04x_Version_%04x",
deviceIdentifier.vendor, deviceIdentifier.product,
deviceIdentifier.version),
type));
if (!versionPath.isEmpty()) {
return versionPath;
}
}
// Try vendor product.
String8 productPath(getInputDeviceConfigurationFilePathByName(
String8::format("Vendor_%04x_Product_%04x",
deviceIdentifier.vendor, deviceIdentifier.product),
type));
if (!productPath.isEmpty()) {
return productPath;
}
}
// Try device name.
return getInputDeviceConfigurationFilePathByName(deviceIdentifier.name, type);
}
String8 getInputDeviceConfigurationFilePathByName(
const String8& name, InputDeviceConfigurationFileType type) {
// Search system repository.
String8 path;
path.setTo(getenv("ANDROID_ROOT"));
path.append("/usr/");
appendInputDeviceConfigurationFileRelativePath(path, name, type);
#if DEBUG_PROBE
ALOGD("Probing for system provided input device configuration file: path='%s'", path.string());
#endif
if (!access(path.string(), R_OK)) {
#if DEBUG_PROBE
ALOGD("Found");
#endif
return path;
}
// Search user repository.
// TODO Should only look here if not in safe mode.
path.setTo(getenv("ANDROID_DATA"));
path.append("/system/devices/");
appendInputDeviceConfigurationFileRelativePath(path, name, type);
#if DEBUG_PROBE
ALOGD("Probing for system user input device configuration file: path='%s'", path.string());
#endif
if (!access(path.string(), R_OK)) {
#if DEBUG_PROBE
ALOGD("Found");
#endif
return path;
}
// Not found.
#if DEBUG_PROBE
ALOGD("Probe failed to find input device configuration file: name='%s', type=%d",
name.string(), type);
#endif
return String8();
}
// --- InputDeviceInfo ---
InputDeviceInfo::InputDeviceInfo() {
initialize(-1, 0, -1, InputDeviceIdentifier(), String8(), false);
}
InputDeviceInfo::InputDeviceInfo(const InputDeviceInfo& other) :
mId(other.mId), mGeneration(other.mGeneration), mControllerNumber(other.mControllerNumber),
mIdentifier(other.mIdentifier), mAlias(other.mAlias), mIsExternal(other.mIsExternal),
mSources(other.mSources), mKeyboardType(other.mKeyboardType),
mKeyCharacterMap(other.mKeyCharacterMap), mHasVibrator(other.mHasVibrator),
mHasButtonUnderPad(other.mHasButtonUnderPad), mMotionRanges(other.mMotionRanges) {
}
InputDeviceInfo::~InputDeviceInfo() {
}
void InputDeviceInfo::initialize(int32_t id, int32_t generation, int32_t controllerNumber,
const InputDeviceIdentifier& identifier, const String8& alias, bool isExternal) {
mId = id;
mGeneration = generation;
mControllerNumber = controllerNumber;
mIdentifier = identifier;
mAlias = alias;
mIsExternal = isExternal;
mSources = 0;
mKeyboardType = AINPUT_KEYBOARD_TYPE_NONE;
mHasVibrator = false;
mHasButtonUnderPad = false;
mMotionRanges.clear();
}
const InputDeviceInfo::MotionRange* InputDeviceInfo::getMotionRange(
int32_t axis, uint32_t source) const {
size_t numRanges = mMotionRanges.size();
for (size_t i = 0; i < numRanges; i++) {
const MotionRange& range = mMotionRanges.itemAt(i);
if (range.axis == axis && range.source == source) {
return ⦥
}
}
return NULL;
}
void InputDeviceInfo::addSource(uint32_t source) {
mSources |= source;
}
void InputDeviceInfo::addMotionRange(int32_t axis, uint32_t source, float min, float max,
float flat, float fuzz, float resolution) {
MotionRange range = { axis, source, min, max, flat, fuzz, resolution };
mMotionRanges.add(range);
}
void InputDeviceInfo::addMotionRange(const MotionRange& range) {
mMotionRanges.add(range);
}
} // namespace android
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