1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef LATINIME_PROXIMITY_INFO_STATE_UTILS_H 18 #define LATINIME_PROXIMITY_INFO_STATE_UTILS_H 19 20 #include <bitset> 21 #include <unordered_map> 22 #include <vector> 23 24 #include "defines.h" 25 26 namespace latinime { 27 class ProximityInfo; 28 class ProximityInfoParams; 29 30 class ProximityInfoStateUtils { 31 public: 32 typedef std::unordered_map<int, float> NearKeysDistanceMap; 33 typedef std::bitset<MAX_KEY_COUNT_IN_A_KEYBOARD> NearKeycodesSet; 34 35 static int trimLastTwoTouchPoints(std::vector<int> *sampledInputXs, 36 std::vector<int> *sampledInputYs, std::vector<int> *sampledInputTimes, 37 std::vector<int> *sampledLengthCache, std::vector<int> *sampledInputIndice); 38 static int updateTouchPoints(const ProximityInfo *const proximityInfo, 39 const int maxPointToKeyLength, const int *const inputProximities, 40 const int *const inputXCoordinates, const int *const inputYCoordinates, 41 const int *const times, const int *const pointerIds, const int inputSize, 42 const bool isGeometric, const int pointerId, const int pushTouchPointStartIndex, 43 std::vector<int> *sampledInputXs, std::vector<int> *sampledInputYs, 44 std::vector<int> *sampledInputTimes, std::vector<int> *sampledLengthCache, 45 std::vector<int> *sampledInputIndice); 46 static const int *getProximityCodePointsAt(const int *const inputProximities, const int index); 47 static int getPrimaryCodePointAt(const int *const inputProximities, const int index); 48 static void popInputData(std::vector<int> *sampledInputXs, std::vector<int> *sampledInputYs, 49 std::vector<int> *sampledInputTimes, std::vector<int> *sampledLengthCache, 50 std::vector<int> *sampledInputIndice); 51 static float refreshSpeedRates(const int inputSize, const int *const xCoordinates, 52 const int *const yCoordinates, const int *const times, const int lastSavedInputSize, 53 const int sampledInputSize, const std::vector<int> *const sampledInputXs, 54 const std::vector<int> *const sampledInputYs, 55 const std::vector<int> *const sampledInputTimes, 56 const std::vector<int> *const sampledLengthCache, 57 const std::vector<int> *const sampledInputIndice, 58 std::vector<float> *sampledSpeedRates, std::vector<float> *sampledDirections); 59 static void refreshBeelineSpeedRates(const int mostCommonKeyWidth, const float averageSpeed, 60 const int inputSize, const int *const xCoordinates, const int *const yCoordinates, 61 const int *times, const int sampledInputSize, 62 const std::vector<int> *const sampledInputXs, 63 const std::vector<int> *const sampledInputYs, const std::vector<int> *const inputIndice, 64 std::vector<int> *beelineSpeedPercentiles); 65 static float getDirection(const std::vector<int> *const sampledInputXs, 66 const std::vector<int> *const sampledInputYs, const int index0, const int index1); 67 static void updateAlignPointProbabilities(const float maxPointToKeyLength, 68 const int mostCommonKeyWidth, const int keyCount, const int start, 69 const int sampledInputSize, const std::vector<int> *const sampledInputXs, 70 const std::vector<int> *const sampledInputYs, 71 const std::vector<float> *const sampledSpeedRates, 72 const std::vector<int> *const sampledLengthCache, 73 const std::vector<float> *const sampledNormalizedSquaredLengthCache, 74 const ProximityInfo *const proximityInfo, 75 std::vector<std::unordered_map<int, float>> *charProbabilities); 76 static void updateSampledSearchKeySets(const ProximityInfo *const proximityInfo, 77 const int sampledInputSize, const int lastSavedInputSize, 78 const std::vector<int> *const sampledLengthCache, 79 const std::vector<std::unordered_map<int, float>> *const charProbabilities, 80 std::vector<NearKeycodesSet> *sampledSearchKeySets, 81 std::vector<std::vector<int>> *sampledSearchKeyVectors); 82 static float getPointToKeyByIdLength(const float maxPointToKeyLength, 83 const std::vector<float> *const sampledNormalizedSquaredLengthCache, const int keyCount, 84 const int inputIndex, const int keyId); 85 static void initGeometricDistanceInfos(const ProximityInfo *const proximityInfo, 86 const int sampledInputSize, const int lastSavedInputSize, const bool isGeometric, 87 const std::vector<int> *const sampledInputXs, 88 const std::vector<int> *const sampledInputYs, 89 std::vector<float> *sampledNormalizedSquaredLengthCache); 90 static void initPrimaryInputWord(const int inputSize, const int *const inputProximities, 91 int *primaryInputWord); 92 static void dump(const bool isGeometric, const int inputSize, 93 const int *const inputXCoordinates, const int *const inputYCoordinates, 94 const int sampledInputSize, const std::vector<int> *const sampledInputXs, 95 const std::vector<int> *const sampledInputYs, 96 const std::vector<int> *const sampledTimes, 97 const std::vector<float> *const sampledSpeedRates, 98 const std::vector<int> *const sampledBeelineSpeedPercentiles); 99 static bool checkAndReturnIsContinuousSuggestionPossible(const int inputSize, 100 const int *const xCoordinates, const int *const yCoordinates, const int *const times, 101 const int sampledInputSize, const std::vector<int> *const sampledInputXs, 102 const std::vector<int> *const sampledInputYs, 103 const std::vector<int> *const sampledTimes, 104 const std::vector<int> *const sampledInputIndices); 105 // TODO: Move to most_probable_string_utils.h 106 static float getMostProbableString(const ProximityInfo *const proximityInfo, 107 const int sampledInputSize, 108 const std::vector<std::unordered_map<int, float>> *const charProbabilities, 109 int *const codePointBuf); 110 111 private: 112 DISALLOW_IMPLICIT_CONSTRUCTORS(ProximityInfoStateUtils); 113 114 static float updateNearKeysDistances(const ProximityInfo *const proximityInfo, 115 const float maxPointToKeyLength, const int x, const int y, 116 const bool isGeometric, 117 NearKeysDistanceMap *const currentNearKeysDistances); 118 static bool isPrevLocalMin(const NearKeysDistanceMap *const currentNearKeysDistances, 119 const NearKeysDistanceMap *const prevNearKeysDistances, 120 const NearKeysDistanceMap *const prevPrevNearKeysDistances); 121 static float getPointScore(const int mostCommonKeyWidth, const int x, const int y, 122 const int time, const bool lastPoint, const float nearest, const float sumAngle, 123 const NearKeysDistanceMap *const currentNearKeysDistances, 124 const NearKeysDistanceMap *const prevNearKeysDistances, 125 const NearKeysDistanceMap *const prevPrevNearKeysDistances, 126 std::vector<int> *sampledInputXs, std::vector<int> *sampledInputYs); 127 static bool pushTouchPoint(const ProximityInfo *const proximityInfo, 128 const int maxPointToKeyLength, const int inputIndex, const int nodeCodePoint, int x, 129 int y, const int time, const bool isGeometric, 130 const bool doSampling, const bool isLastPoint, 131 const float sumAngle, NearKeysDistanceMap *const currentNearKeysDistances, 132 const NearKeysDistanceMap *const prevNearKeysDistances, 133 const NearKeysDistanceMap *const prevPrevNearKeysDistances, 134 std::vector<int> *sampledInputXs, std::vector<int> *sampledInputYs, 135 std::vector<int> *sampledInputTimes, std::vector<int> *sampledLengthCache, 136 std::vector<int> *sampledInputIndice); 137 static float calculateBeelineSpeedRate(const int mostCommonKeyWidth, const float averageSpeed, 138 const int id, const int inputSize, const int *const xCoordinates, 139 const int *const yCoordinates, const int *times, const int sampledInputSize, 140 const std::vector<int> *const sampledInputXs, 141 const std::vector<int> *const sampledInputYs, 142 const std::vector<int> *const inputIndice); 143 static float getPointAngle(const std::vector<int> *const sampledInputXs, 144 const std::vector<int> *const sampledInputYs, const int index); 145 static float getPointsAngle(const std::vector<int> *const sampledInputXs, 146 const std::vector<int> *const sampledInputYs, const int index0, const int index1, 147 const int index2); 148 static bool suppressCharProbabilities(const int mostCommonKeyWidth, 149 const int sampledInputSize, const std::vector<int> *const lengthCache, const int index0, 150 const int index1, std::vector<std::unordered_map<int, float>> *charProbabilities); 151 static float calculateSquaredDistanceFromSweetSpotCenter( 152 const ProximityInfo *const proximityInfo, const std::vector<int> *const sampledInputXs, 153 const std::vector<int> *const sampledInputYs, const int keyIndex, 154 const int inputIndex); 155 static float calculateNormalizedSquaredDistance(const ProximityInfo *const proximityInfo, 156 const std::vector<int> *const sampledInputXs, 157 const std::vector<int> *const sampledInputYs, const int keyIndex, const int inputIndex); 158 }; 159 } // namespace latinime 160 #endif // LATINIME_PROXIMITY_INFO_STATE_UTILS_H 161
