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 <vector> 22 23 #include "defines.h" 24 #include "hash_map_compat.h" 25 26 namespace latinime { 27 class ProximityInfo; 28 class ProximityInfoParams; 29 30 class ProximityInfoStateUtils { 31 public: 32 typedef hash_map_compat<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, 42 const float verticalSweetSpotScale, const int inputSize, 43 const bool isGeometric, const int pointerId, const int pushTouchPointStartIndex, 44 std::vector<int> *sampledInputXs, std::vector<int> *sampledInputYs, 45 std::vector<int> *sampledInputTimes, std::vector<int> *sampledLengthCache, 46 std::vector<int> *sampledInputIndice); 47 static const int *getProximityCodePointsAt(const int *const inputProximities, const int index); 48 static int getPrimaryCodePointAt(const int *const inputProximities, const int index); 49 static void popInputData(std::vector<int> *sampledInputXs, std::vector<int> *sampledInputYs, 50 std::vector<int> *sampledInputTimes, std::vector<int> *sampledLengthCache, 51 std::vector<int> *sampledInputIndice); 52 static float refreshSpeedRates(const int inputSize, const int *const xCoordinates, 53 const int *const yCoordinates, const int *const times, const int lastSavedInputSize, 54 const int sampledInputSize, const std::vector<int> *const sampledInputXs, 55 const std::vector<int> *const sampledInputYs, 56 const std::vector<int> *const sampledInputTimes, 57 const std::vector<int> *const sampledLengthCache, 58 const std::vector<int> *const sampledInputIndice, 59 std::vector<float> *sampledSpeedRates, std::vector<float> *sampledDirections); 60 static void refreshBeelineSpeedRates(const int mostCommonKeyWidth, const float averageSpeed, 61 const int inputSize, const int *const xCoordinates, const int *const yCoordinates, 62 const int *times, const int sampledInputSize, 63 const std::vector<int> *const sampledInputXs, 64 const std::vector<int> *const sampledInputYs, const std::vector<int> *const inputIndice, 65 std::vector<int> *beelineSpeedPercentiles); 66 static float getDirection(const std::vector<int> *const sampledInputXs, 67 const std::vector<int> *const sampledInputYs, const int index0, const int index1); 68 static void updateAlignPointProbabilities(const float maxPointToKeyLength, 69 const int mostCommonKeyWidth, const int keyCount, const int start, 70 const int sampledInputSize, const std::vector<int> *const sampledInputXs, 71 const std::vector<int> *const sampledInputYs, 72 const std::vector<float> *const sampledSpeedRates, 73 const std::vector<int> *const sampledLengthCache, 74 const std::vector<float> *const sampledNormalizedSquaredLengthCache, 75 std::vector<NearKeycodesSet> *sampledNearKeySets, 76 std::vector<hash_map_compat<int, float> > *charProbabilities); 77 static void updateSampledSearchKeySets(const ProximityInfo *const proximityInfo, 78 const int sampledInputSize, const int lastSavedInputSize, 79 const std::vector<int> *const sampledLengthCache, 80 const std::vector<NearKeycodesSet> *const sampledNearKeySets, 81 std::vector<NearKeycodesSet> *sampledSearchKeySets, 82 std::vector<std::vector<int> > *sampledSearchKeyVectors); 83 static float getPointToKeyByIdLength(const float maxPointToKeyLength, 84 const std::vector<float> *const sampledNormalizedSquaredLengthCache, const int keyCount, 85 const int inputIndex, const int keyId); 86 static void initGeometricDistanceInfos(const ProximityInfo *const proximityInfo, 87 const int sampledInputSize, const int lastSavedInputSize, 88 const float verticalSweetSpotScale, 89 const std::vector<int> *const sampledInputXs, 90 const std::vector<int> *const sampledInputYs, 91 std::vector<NearKeycodesSet> *sampledNearKeySets, 92 std::vector<float> *sampledNormalizedSquaredLengthCache); 93 static void initPrimaryInputWord(const int inputSize, const int *const inputProximities, 94 int *primaryInputWord); 95 static void initNormalizedSquaredDistances(const ProximityInfo *const proximityInfo, 96 const int inputSize, const int *inputXCoordinates, const int *inputYCoordinates, 97 const int *const inputProximities, const std::vector<int> *const sampledInputXs, 98 const std::vector<int> *const sampledInputYs, int *normalizedSquaredDistances); 99 static void dump(const bool isGeometric, const int inputSize, 100 const int *const inputXCoordinates, const int *const inputYCoordinates, 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<float> *const sampledSpeedRates, 105 const std::vector<int> *const sampledBeelineSpeedPercentiles); 106 static bool checkAndReturnIsContinuousSuggestionPossible(const int inputSize, 107 const int *const xCoordinates, const int *const yCoordinates, const int *const times, 108 const int sampledInputSize, const std::vector<int> *const sampledInputXs, 109 const std::vector<int> *const sampledInputYs, 110 const std::vector<int> *const sampledTimes, 111 const std::vector<int> *const sampledInputIndices); 112 // TODO: Move to most_probable_string_utils.h 113 static float getMostProbableString(const ProximityInfo *const proximityInfo, 114 const int sampledInputSize, 115 const std::vector<hash_map_compat<int, float> > *const charProbabilities, 116 int *const codePointBuf); 117 118 private: 119 DISALLOW_IMPLICIT_CONSTRUCTORS(ProximityInfoStateUtils); 120 121 static float updateNearKeysDistances(const ProximityInfo *const proximityInfo, 122 const float maxPointToKeyLength, const int x, const int y, 123 const float verticalSweetSpotScale, 124 NearKeysDistanceMap *const currentNearKeysDistances); 125 static bool isPrevLocalMin(const NearKeysDistanceMap *const currentNearKeysDistances, 126 const NearKeysDistanceMap *const prevNearKeysDistances, 127 const NearKeysDistanceMap *const prevPrevNearKeysDistances); 128 static float getPointScore(const int mostCommonKeyWidth, const int x, const int y, 129 const int time, const bool lastPoint, const float nearest, const float sumAngle, 130 const NearKeysDistanceMap *const currentNearKeysDistances, 131 const NearKeysDistanceMap *const prevNearKeysDistances, 132 const NearKeysDistanceMap *const prevPrevNearKeysDistances, 133 std::vector<int> *sampledInputXs, std::vector<int> *sampledInputYs); 134 static bool pushTouchPoint(const ProximityInfo *const proximityInfo, 135 const int maxPointToKeyLength, const int inputIndex, const int nodeCodePoint, int x, 136 int y, const int time, const float verticalSweetSpotScale, 137 const bool doSampling, const bool isLastPoint, 138 const float sumAngle, NearKeysDistanceMap *const currentNearKeysDistances, 139 const NearKeysDistanceMap *const prevNearKeysDistances, 140 const NearKeysDistanceMap *const prevPrevNearKeysDistances, 141 std::vector<int> *sampledInputXs, std::vector<int> *sampledInputYs, 142 std::vector<int> *sampledInputTimes, std::vector<int> *sampledLengthCache, 143 std::vector<int> *sampledInputIndice); 144 static float calculateBeelineSpeedRate(const int mostCommonKeyWidth, const float averageSpeed, 145 const int id, const int inputSize, const int *const xCoordinates, 146 const int *const yCoordinates, const int *times, const int sampledInputSize, 147 const std::vector<int> *const sampledInputXs, 148 const std::vector<int> *const sampledInputYs, 149 const std::vector<int> *const inputIndice); 150 static float getPointAngle(const std::vector<int> *const sampledInputXs, 151 const std::vector<int> *const sampledInputYs, const int index); 152 static float getPointsAngle(const std::vector<int> *const sampledInputXs, 153 const std::vector<int> *const sampledInputYs, const int index0, const int index1, 154 const int index2); 155 static bool suppressCharProbabilities(const int mostCommonKeyWidth, 156 const int sampledInputSize, const std::vector<int> *const lengthCache, const int index0, 157 const int index1, std::vector<hash_map_compat<int, float> > *charProbabilities); 158 static float calculateSquaredDistanceFromSweetSpotCenter( 159 const ProximityInfo *const proximityInfo, const std::vector<int> *const sampledInputXs, 160 const std::vector<int> *const sampledInputYs, const int keyIndex, 161 const int inputIndex); 162 static float calculateNormalizedSquaredDistance(const ProximityInfo *const proximityInfo, 163 const std::vector<int> *const sampledInputXs, 164 const std::vector<int> *const sampledInputYs, const int keyIndex, const int inputIndex); 165 }; 166 } // namespace latinime 167 #endif // LATINIME_PROXIMITY_INFO_STATE_UTILS_H 168
