diff --git a/native/jni/src/proximity_info_state.cpp b/native/jni/src/proximity_info_state.cpp index 1e69dac6c..e64d46d01 100644 --- a/native/jni/src/proximity_info_state.cpp +++ b/native/jni/src/proximity_info_state.cpp @@ -95,11 +95,11 @@ void ProximityInfoState::initInputParams(const int pointerId, const float maxPoi pushTouchPointStartIndex = mInputIndice[mInputIndice.size() - 2]; popInputData(); popInputData(); - lastSavedInputSize = mInputXs.size(); + lastSavedInputSize = mSampledInputXs.size(); } else { // Clear all data. - mInputXs.clear(); - mInputYs.clear(); + mSampledInputXs.clear(); + mSampledInputYs.clear(); mTimes.clear(); mInputIndice.clear(); mLengthCache.clear(); @@ -114,7 +114,7 @@ void ProximityInfoState::initInputParams(const int pointerId, const float maxPoi AKLOGI("Init ProximityInfoState: reused points = %d, last input size = %d", pushTouchPointStartIndex, lastSavedInputSize); } - mInputSize = 0; + mSampledInputSize = 0; if (xCoordinates && yCoordinates) { const bool proximityOnly = !isGeometric && (xCoordinates[0] < 0 || yCoordinates[0] < 0); @@ -175,77 +175,33 @@ void ProximityInfoState::initInputParams(const int pointerId, const float maxPoi } } } - mInputSize = mInputXs.size(); + mSampledInputSize = mSampledInputXs.size(); } - if (mInputSize > 0 && isGeometric) { - // Relative speed calculation. - const int sumDuration = mTimes.back() - mTimes.front(); - const int sumLength = mLengthCache.back() - mLengthCache.front(); - const float averageSpeed = static_cast(sumLength) / static_cast(sumDuration); - mRelativeSpeeds.resize(mInputSize); - for (int i = lastSavedInputSize; i < mInputSize; ++i) { - const int index = mInputIndice[i]; - int length = 0; - int duration = 0; - - // Calculate velocity by using distances and durations of - // NUM_POINTS_FOR_SPEED_CALCULATION points for both forward and backward. - static const int NUM_POINTS_FOR_SPEED_CALCULATION = 2; - for (int j = index; j < min(inputSize - 1, index + NUM_POINTS_FOR_SPEED_CALCULATION); - ++j) { - if (i < mInputSize - 1 && j >= mInputIndice[i + 1]) { - break; - } - length += getDistanceInt(xCoordinates[j], yCoordinates[j], - xCoordinates[j + 1], yCoordinates[j + 1]); - duration += times[j + 1] - times[j]; - } - for (int j = index - 1; j >= max(0, index - NUM_POINTS_FOR_SPEED_CALCULATION); --j) { - if (i > 0 && j < mInputIndice[i - 1]) { - break; - } - length += getDistanceInt(xCoordinates[j], yCoordinates[j], - xCoordinates[j + 1], yCoordinates[j + 1]); - duration += times[j + 1] - times[j]; - } - if (duration == 0 || sumDuration == 0) { - // Cannot calculate speed; thus, it gives an average value (1.0); - mRelativeSpeeds[i] = 1.0f; - } else { - const float speed = static_cast(length) / static_cast(duration); - mRelativeSpeeds[i] = speed / averageSpeed; - } - } - - // Direction calculation. - mDirections.resize(mInputSize - 1); - for (int i = max(0, lastSavedInputSize - 1); i < mInputSize - 1; ++i) { - mDirections[i] = getDirection(i, i + 1); - } - + if (mSampledInputSize > 0 && isGeometric) { + refreshRelativeSpeed(inputSize, xCoordinates, yCoordinates, times, lastSavedInputSize); } if (DEBUG_GEO_FULL) { - for (int i = 0; i < mInputSize; ++i) { - AKLOGI("Sampled(%d): x = %d, y = %d, time = %d", i, mInputXs[i], mInputYs[i], - mTimes[i]); + for (int i = 0; i < mSampledInputSize; ++i) { + AKLOGI("Sampled(%d): x = %d, y = %d, time = %d", i, mSampledInputXs[i], + mSampledInputYs[i], mTimes[i]); } } - if (mInputSize > 0) { + if (mSampledInputSize > 0) { const int keyCount = mProximityInfo->getKeyCount(); - mNearKeysVector.resize(mInputSize); - mSearchKeysVector.resize(mInputSize); - mDistanceCache.resize(mInputSize * keyCount); - for (int i = lastSavedInputSize; i < mInputSize; ++i) { + mNearKeysVector.resize(mSampledInputSize); + mSearchKeysVector.resize(mSampledInputSize); + mDistanceCache.resize(mSampledInputSize * keyCount); + for (int i = lastSavedInputSize; i < mSampledInputSize; ++i) { mNearKeysVector[i].reset(); mSearchKeysVector[i].reset(); static const float NEAR_KEY_NORMALIZED_SQUARED_THRESHOLD = 4.0f; for (int k = 0; k < keyCount; ++k) { const int index = i * keyCount + k; - const int x = mInputXs[i]; - const int y = mInputYs[i]; + const int x = mSampledInputXs[i]; + const int y = mSampledInputYs[i]; const float normalizedSquaredDistance = mProximityInfo->getNormalizedSquaredDistanceFromCenterFloatG(k, x, y); mDistanceCache[index] = normalizedSquaredDistance; @@ -262,11 +218,11 @@ void ProximityInfoState::initInputParams(const int pointerId, const float maxPoi const int readForwordLength = static_cast( hypotf(mProximityInfo->getKeyboardWidth(), mProximityInfo->getKeyboardHeight()) * READ_FORWORD_LENGTH_SCALE); - for (int i = 0; i < mInputSize; ++i) { + for (int i = 0; i < mSampledInputSize; ++i) { if (i >= lastSavedInputSize) { mSearchKeysVector[i].reset(); } - for (int j = max(i, lastSavedInputSize); j < mInputSize; ++j) { + for (int j = max(i, lastSavedInputSize); j < mSampledInputSize; ++j) { if (mLengthCache[j] - mLengthCache[i] >= readForwordLength) { break; } @@ -286,10 +242,10 @@ void ProximityInfoState::initInputParams(const int pointerId, const float maxPoi originalY << ";"; } } - for (int i = 0; i < mInputSize; ++i) { - sampledX << mInputXs[i]; - sampledY << mInputYs[i]; - if (i != mInputSize - 1) { + for (int i = 0; i < mSampledInputSize; ++i) { + sampledX << mSampledInputXs[i]; + sampledY << mSampledInputYs[i]; + if (i != mSampledInputSize - 1) { sampledX << ";"; sampledY << ";"; } @@ -303,14 +259,14 @@ void ProximityInfoState::initInputParams(const int pointerId, const float maxPoi memset(mNormalizedSquaredDistances, NOT_A_DISTANCE, sizeof(mNormalizedSquaredDistances)); memset(mPrimaryInputWord, 0, sizeof(mPrimaryInputWord)); - mTouchPositionCorrectionEnabled = mInputSize > 0 && mHasTouchPositionCorrectionData + mTouchPositionCorrectionEnabled = mSampledInputSize > 0 && mHasTouchPositionCorrectionData && xCoordinates && yCoordinates; if (!isGeometric && pointerId == 0) { for (int i = 0; i < inputSize; ++i) { mPrimaryInputWord[i] = getPrimaryCodePointAt(i); } - for (int i = 0; i < mInputSize && mTouchPositionCorrectionEnabled; ++i) { + for (int i = 0; i < mSampledInputSize && mTouchPositionCorrectionEnabled; ++i) { const int *proximityCodePoints = getProximityCodePointsAt(i); const int primaryKey = proximityCodePoints[0]; const int x = xCoordinates[i]; @@ -343,16 +299,64 @@ void ProximityInfoState::initInputParams(const int pointerId, const float maxPoi } if (DEBUG_GEO_FULL) { - AKLOGI("ProximityState init finished: %d points out of %d", mInputSize, inputSize); + AKLOGI("ProximityState init finished: %d points out of %d", mSampledInputSize, inputSize); + } +} + +void ProximityInfoState::refreshRelativeSpeed(const int inputSize, const int *const xCoordinates, + const int *const yCoordinates, const int *const times, const int lastSavedInputSize) { + // Relative speed calculation. + const int sumDuration = mTimes.back() - mTimes.front(); + const int sumLength = mLengthCache.back() - mLengthCache.front(); + const float averageSpeed = static_cast(sumLength) / static_cast(sumDuration); + mRelativeSpeeds.resize(mSampledInputSize); + for (int i = lastSavedInputSize; i < mSampledInputSize; ++i) { + const int index = mInputIndice[i]; + int length = 0; + int duration = 0; + + // Calculate velocity by using distances and durations of + // NUM_POINTS_FOR_SPEED_CALCULATION points for both forward and backward. + static const int NUM_POINTS_FOR_SPEED_CALCULATION = 2; + for (int j = index; j < min(inputSize - 1, index + NUM_POINTS_FOR_SPEED_CALCULATION); + ++j) { + if (i < mSampledInputSize - 1 && j >= mInputIndice[i + 1]) { + break; + } + length += getDistanceInt(xCoordinates[j], yCoordinates[j], + xCoordinates[j + 1], yCoordinates[j + 1]); + duration += times[j + 1] - times[j]; + } + for (int j = index - 1; j >= max(0, index - NUM_POINTS_FOR_SPEED_CALCULATION); --j) { + if (i > 0 && j < mInputIndice[i - 1]) { + break; + } + length += getDistanceInt(xCoordinates[j], yCoordinates[j], + xCoordinates[j + 1], yCoordinates[j + 1]); + duration += times[j + 1] - times[j]; + } + if (duration == 0 || sumDuration == 0) { + // Cannot calculate speed; thus, it gives an average value (1.0); + mRelativeSpeeds[i] = 1.0f; + } else { + const float speed = static_cast(length) / static_cast(duration); + mRelativeSpeeds[i] = speed / averageSpeed; + } + } + + // Direction calculation. + mDirections.resize(mSampledInputSize - 1); + for (int i = max(0, lastSavedInputSize - 1); i < mSampledInputSize - 1; ++i) { + mDirections[i] = getDirection(i, i + 1); } } bool ProximityInfoState::checkAndReturnIsContinuationPossible(const int inputSize, const int *const xCoordinates, const int *const yCoordinates, const int *const times) { - for (int i = 0; i < mInputSize; ++i) { + for (int i = 0; i < mSampledInputSize; ++i) { const int index = mInputIndice[i]; - if (index > inputSize || xCoordinates[index] != mInputXs[i] || - yCoordinates[index] != mInputYs[i] || times[index] != mTimes[i]) { + if (index > inputSize || xCoordinates[index] != mSampledInputXs[i] || + yCoordinates[index] != mSampledInputYs[i] || times[index] != mTimes[i]) { return false; } } @@ -413,7 +417,7 @@ float ProximityInfoState::getPointScore( static const float CORNER_SUM_ANGLE_THRESHOLD = M_PI_F / 4.0f; static const float CORNER_SCORE = 1.0f; - const size_t size = mInputXs.size(); + const size_t size = mSampledInputXs.size(); // If there is only one point, add this point. Besides, if the previous point's distance map // is empty, we re-compute nearby keys distances from the current point. // Note that the current point is the first point in the incremental input that needs to @@ -423,8 +427,8 @@ float ProximityInfoState::getPointScore( } const int baseSampleRate = mProximityInfo->getMostCommonKeyWidth(); - const int distPrev = getDistanceInt(mInputXs.back(), mInputYs.back(), - mInputXs[size - 2], mInputYs[size - 2]) * DISTANCE_BASE_SCALE; + const int distPrev = getDistanceInt(mSampledInputXs.back(), mSampledInputYs.back(), + mSampledInputXs[size - 2], mSampledInputYs[size - 2]) * DISTANCE_BASE_SCALE; float score = 0.0f; // Location @@ -436,9 +440,9 @@ float ProximityInfoState::getPointScore( score += LOCALMIN_DISTANCE_AND_NEAR_TO_KEY_SCORE; } // Angle - const float angle1 = getAngle(x, y, mInputXs.back(), mInputYs.back()); - const float angle2 = getAngle(mInputXs.back(), mInputYs.back(), - mInputXs[size - 2], mInputYs[size - 2]); + const float angle1 = getAngle(x, y, mSampledInputXs.back(), mSampledInputYs.back()); + const float angle2 = getAngle(mSampledInputXs.back(), mSampledInputYs.back(), + mSampledInputXs[size - 2], mSampledInputYs[size - 2]); const float angleDiff = getAngleDiff(angle1, angle2); // Save corner @@ -458,7 +462,7 @@ bool ProximityInfoState::pushTouchPoint(const int inputIndex, const int nodeCode const NearKeysDistanceMap *const prevPrevNearKeysDistances) { static const int LAST_POINT_SKIP_DISTANCE_SCALE = 4; - size_t size = mInputXs.size(); + size_t size = mSampledInputXs.size(); bool popped = false; if (nodeCodePoint < 0 && sample) { const float nearest = updateNearKeysDistances(x, y, currentNearKeysDistances); @@ -467,20 +471,20 @@ bool ProximityInfoState::pushTouchPoint(const int inputIndex, const int nodeCode if (score < 0) { // Pop previous point because it would be useless. popInputData(); - size = mInputXs.size(); + size = mSampledInputXs.size(); popped = true; } else { popped = false; } // Check if the last point should be skipped. if (isLastPoint && size > 0) { - if (getDistanceInt(x, y, mInputXs.back(), mInputYs.back()) + if (getDistanceInt(x, y, mSampledInputXs.back(), mSampledInputYs.back()) * LAST_POINT_SKIP_DISTANCE_SCALE < mProximityInfo->getMostCommonKeyWidth()) { // This point is not used because it's too close to the previous point. if (DEBUG_GEO_FULL) { AKLOGI("p0: size = %zd, x = %d, y = %d, lx = %d, ly = %d, dist = %d, " - "width = %d", size, x, y, mInputXs.back(), mInputYs.back(), - getDistanceInt(x, y, mInputXs.back(), mInputYs.back()), + "width = %d", size, x, y, mSampledInputXs.back(), mSampledInputYs.back(), + getDistanceInt(x, y, mSampledInputXs.back(), mSampledInputYs.back()), mProximityInfo->getMostCommonKeyWidth() / LAST_POINT_SKIP_DISTANCE_SCALE); } @@ -500,12 +504,13 @@ bool ProximityInfoState::pushTouchPoint(const int inputIndex, const int nodeCode // Pushing point information. if (size > 0) { mLengthCache.push_back( - mLengthCache.back() + getDistanceInt(x, y, mInputXs.back(), mInputYs.back())); + mLengthCache.back() + getDistanceInt( + x, y, mSampledInputXs.back(), mSampledInputYs.back())); } else { mLengthCache.push_back(0); } - mInputXs.push_back(x); - mInputYs.push_back(y); + mSampledInputXs.push_back(x); + mSampledInputYs.push_back(y); mTimes.push_back(time); mInputIndice.push_back(inputIndex); if (DEBUG_GEO_FULL) { @@ -523,7 +528,7 @@ float ProximityInfoState::calculateNormalizedSquaredDistance( if (!mProximityInfo->hasSweetSpotData(keyIndex)) { return NOT_A_DISTANCE_FLOAT; } - if (NOT_A_COORDINATE == mInputXs[inputIndex]) { + if (NOT_A_COORDINATE == mSampledInputXs[inputIndex]) { return NOT_A_DISTANCE_FLOAT; } const float squaredDistance = calculateSquaredDistanceFromSweetSpotCenter( @@ -533,7 +538,7 @@ float ProximityInfoState::calculateNormalizedSquaredDistance( } int ProximityInfoState::getDuration(const int index) const { - if (index >= 0 && index < mInputSize - 1) { + if (index >= 0 && index < mSampledInputSize - 1) { return mTimes[index + 1] - mTimes[index]; } return 0; @@ -632,15 +637,15 @@ float ProximityInfoState::calculateSquaredDistanceFromSweetSpotCenter( const int keyIndex, const int inputIndex) const { const float sweetSpotCenterX = mProximityInfo->getSweetSpotCenterXAt(keyIndex); const float sweetSpotCenterY = mProximityInfo->getSweetSpotCenterYAt(keyIndex); - const float inputX = static_cast(mInputXs[inputIndex]); - const float inputY = static_cast(mInputYs[inputIndex]); + const float inputX = static_cast(mSampledInputXs[inputIndex]); + const float inputY = static_cast(mSampledInputYs[inputIndex]); return square(inputX - sweetSpotCenterX) + square(inputY - sweetSpotCenterY); } // Puts possible characters into filter and returns new filter size. int32_t ProximityInfoState::getAllPossibleChars( const size_t index, int32_t *const filter, const int32_t filterSize) const { - if (index >= mInputXs.size()) { + if (index >= mSampledInputXs.size()) { return filterSize; } int newFilterSize = filterSize; @@ -666,34 +671,34 @@ int32_t ProximityInfoState::getAllPossibleChars( bool ProximityInfoState::isKeyInSerchKeysAfterIndex(const int index, const int keyId) const { ASSERT(keyId >= 0); - ASSERT(index >= 0 && index < mInputSize); + ASSERT(index >= 0 && index < mSampledInputSize); return mSearchKeysVector[index].test(keyId); } void ProximityInfoState::popInputData() { - mInputXs.pop_back(); - mInputYs.pop_back(); + mSampledInputXs.pop_back(); + mSampledInputYs.pop_back(); mTimes.pop_back(); mLengthCache.pop_back(); mInputIndice.pop_back(); } float ProximityInfoState::getDirection(const int index0, const int index1) const { - if (index0 < 0 || index0 > mInputSize - 1) { + if (index0 < 0 || index0 > mSampledInputSize - 1) { return 0.0f; } - if (index1 < 0 || index1 > mInputSize - 1) { + if (index1 < 0 || index1 > mSampledInputSize - 1) { return 0.0f; } - const int x1 = mInputXs[index0]; - const int y1 = mInputYs[index0]; - const int x2 = mInputXs[index1]; - const int y2 = mInputYs[index1]; + const int x1 = mSampledInputXs[index0]; + const int y1 = mSampledInputYs[index0]; + const int x2 = mSampledInputXs[index1]; + const int y2 = mSampledInputYs[index1]; return getAngle(x1, y1, x2, y2); } float ProximityInfoState::getPointAngle(const int index) const { - if (index <= 0 || index >= mInputSize - 1) { + if (index <= 0 || index >= mSampledInputSize - 1) { return 0.0f; } const float previousDirection = getDirection(index - 1, index); @@ -704,13 +709,13 @@ float ProximityInfoState::getPointAngle(const int index) const { float ProximityInfoState::getPointsAngle( const int index0, const int index1, const int index2) const { - if (index0 < 0 || index0 > mInputSize - 1) { + if (index0 < 0 || index0 > mSampledInputSize - 1) { return 0.0f; } - if (index1 < 0 || index1 > mInputSize - 1) { + if (index1 < 0 || index1 > mSampledInputSize - 1) { return 0.0f; } - if (index2 < 0 || index2 > mInputSize - 1) { + if (index2 < 0 || index2 > mSampledInputSize - 1) { return 0.0f; } const float previousDirection = getDirection(index0, index1); @@ -720,16 +725,16 @@ float ProximityInfoState::getPointsAngle( float ProximityInfoState::getLineToKeyDistance( const int from, const int to, const int keyId, const bool extend) const { - if (from < 0 || from > mInputSize - 1) { + if (from < 0 || from > mSampledInputSize - 1) { return 0.0f; } - if (to < 0 || to > mInputSize - 1) { + if (to < 0 || to > mSampledInputSize - 1) { return 0.0f; } - const int x0 = mInputXs[from]; - const int y0 = mInputYs[from]; - const int x1 = mInputXs[to]; - const int y1 = mInputYs[to]; + const int x0 = mSampledInputXs[from]; + const int y0 = mSampledInputYs[from]; + const int x1 = mSampledInputXs[to]; + const int y1 = mSampledInputYs[to]; const int keyX = mProximityInfo->getKeyCenterXOfKeyIdG(keyId); const int keyY = mProximityInfo->getKeyCenterYOfKeyIdG(keyId); @@ -762,10 +767,10 @@ void ProximityInfoState::updateAlignPointProbabilities(const int start) { static const float CENTER_VALUE_OF_NORMALIZED_DISTRIBUTION = 0.0f; const int keyCount = mProximityInfo->getKeyCount(); - mCharProbabilities.resize(mInputSize); + mCharProbabilities.resize(mSampledInputSize); // Calculates probabilities of using a point as a correlated point with the character // for each point. - for (int i = start; i < mInputSize; ++i) { + for (int i = start; i < mSampledInputSize; ++i) { mCharProbabilities[i].clear(); // First, calculates skip probability. Starts form MIN_SKIP_PROBABILITY. // Note that all values that are multiplied to this probability should be in [0.0, 1.0]; @@ -789,7 +794,7 @@ void ProximityInfoState::updateAlignPointProbabilities(const int start) { + NEAREST_DISTANCE_BIAS); // Promote the first point skipProbability *= SKIP_FIRST_POINT_PROBABILITY; - } else if (i == mInputSize - 1) { + } else if (i == mSampledInputSize - 1) { skipProbability *= min(1.0f, nearestKeyDistance * NEAREST_DISTANCE_WEIGHT_FOR_LAST + NEAREST_DISTANCE_BIAS_FOR_LAST); // Promote the last point @@ -861,7 +866,7 @@ void ProximityInfoState::updateAlignPointProbabilities(const int start) { for (int j = 0; j < keyCount; ++j) { if (mNearKeysVector[i].test(j)) { float distance = sqrtf(getPointToKeyByIdLength(i, j)); - if (i == 0 && i != mInputSize - 1) { + if (i == 0 && i != mSampledInputSize - 1) { // For the first point, weighted average of distances from first point and the // next point to the key is used as a point to key distance. const float nextDistance = sqrtf(getPointToKeyByIdLength(i + 1, j)); @@ -873,7 +878,7 @@ void ProximityInfoState::updateAlignPointProbabilities(const int start) { distance = (distance + nextDistance * NEXT_DISTANCE_WEIGHT) / (1.0f + NEXT_DISTANCE_WEIGHT); } - } else if (i != 0 && i == mInputSize - 1) { + } else if (i != 0 && i == mSampledInputSize - 1) { // For the first point, weighted average of distances from last point and // the previous point to the key is used as a point to key distance. const float previousDistance = sqrtf(getPointToKeyByIdLength(i - 1, j)); @@ -896,7 +901,7 @@ void ProximityInfoState::updateAlignPointProbabilities(const int start) { for (int j = 0; j < keyCount; ++j) { if (mNearKeysVector[i].test(j)) { float distance = sqrtf(getPointToKeyByIdLength(i, j)); - if (i == 0 && i != mInputSize - 1) { + if (i == 0 && i != mSampledInputSize - 1) { // For the first point, weighted average of distances from the first point and // the next point to the key is used as a point to key distance. const float prevDistance = sqrtf(getPointToKeyByIdLength(i + 1, j)); @@ -904,7 +909,7 @@ void ProximityInfoState::updateAlignPointProbabilities(const int start) { distance = (distance + prevDistance * NEXT_DISTANCE_WEIGHT) / (1.0f + NEXT_DISTANCE_WEIGHT); } - } else if (i != 0 && i == mInputSize - 1) { + } else if (i != 0 && i == mSampledInputSize - 1) { // For the first point, weighted average of distances from last point and // the previous point to the key is used as a point to key distance. const float prevDistance = sqrtf(getPointToKeyByIdLength(i - 1, j)); @@ -923,10 +928,10 @@ void ProximityInfoState::updateAlignPointProbabilities(const int start) { if (DEBUG_POINTS_PROBABILITY) { - for (int i = 0; i < mInputSize; ++i) { + for (int i = 0; i < mSampledInputSize; ++i) { std::stringstream sstream; sstream << i << ", "; - sstream << "(" << mInputXs[i] << ", " << mInputYs[i] << "), "; + sstream << "(" << mSampledInputXs[i] << ", " << mSampledInputYs[i] << "), "; sstream << "Speed: "<< getRelativeSpeed(i) << ", "; sstream << "Angle: "<< getPointAngle(i) << ", \n"; @@ -952,8 +957,8 @@ void ProximityInfoState::updateAlignPointProbabilities(const int start) { // Decrease key probabilities of points which don't have the highest probability of that key // among nearby points. Probabilities of the first point and the last point are not suppressed. - for (int i = max(start, 1); i < mInputSize; ++i) { - for (int j = i + 1; j < mInputSize; ++j) { + for (int i = max(start, 1); i < mSampledInputSize; ++i) { + for (int j = i + 1; j < mSampledInputSize; ++j) { if (!suppressCharProbabilities(i, j)) { break; } @@ -966,7 +971,7 @@ void ProximityInfoState::updateAlignPointProbabilities(const int start) { } // Converting from raw probabilities to log probabilities to calculate spatial distance. - for (int i = start; i < mInputSize; ++i) { + for (int i = start; i < mSampledInputSize; ++i) { for (int j = 0; j < keyCount; ++j) { hash_map_compat::iterator it = mCharProbabilities[i].find(j); if (it == mCharProbabilities[i].end()){ @@ -986,8 +991,8 @@ void ProximityInfoState::updateAlignPointProbabilities(const int start) { // Decreases char probabilities of index0 by checking probabilities of a near point (index1) and // increases char probabilities of index1 by checking probabilities of index0. bool ProximityInfoState::suppressCharProbabilities(const int index0, const int index1) { - ASSERT(0 <= index0 && index0 < mInputSize); - ASSERT(0 <= index1 && index1 < mInputSize); + ASSERT(0 <= index0 && index0 < mSampledInputSize); + ASSERT(0 <= index1 && index1 < mSampledInputSize); static const float SUPPRESSION_LENGTH_WEIGHT = 1.5f; static const float MIN_SUPPRESSION_RATE = 0.1f; @@ -1030,7 +1035,7 @@ float ProximityInfoState::getHighestProbabilitySequence(int *const codePointBuf) int index = 0; float sumLogProbability = 0.0f; // TODO: Current implementation is greedy algorithm. DP would be efficient for many cases. - for (int i = 0; i < mInputSize && index < MAX_WORD_LENGTH_INTERNAL - 1; ++i) { + for (int i = 0; i < mSampledInputSize && index < MAX_WORD_LENGTH_INTERNAL - 1; ++i) { float minLogProbability = static_cast(MAX_POINT_TO_KEY_LENGTH); int character = NOT_AN_INDEX; for (hash_map_compat::const_iterator it = mCharProbabilities[i].begin(); @@ -1054,7 +1059,7 @@ float ProximityInfoState::getHighestProbabilitySequence(int *const codePointBuf) // Returns a probability of mapping index to keyIndex. float ProximityInfoState::getProbability(const int index, const int keyIndex) const { - ASSERT(0 <= index && index < mInputSize); + ASSERT(0 <= index && index < mSampledInputSize); hash_map_compat::const_iterator it = mCharProbabilities[index].find(keyIndex); if (it != mCharProbabilities[index].end()) { return it->second; diff --git a/native/jni/src/proximity_info_state.h b/native/jni/src/proximity_info_state.h index 39a238889..79dd5be53 100644 --- a/native/jni/src/proximity_info_state.h +++ b/native/jni/src/proximity_info_state.h @@ -54,10 +54,10 @@ class ProximityInfoState { : mProximityInfo(0), mMaxPointToKeyLength(0), mHasTouchPositionCorrectionData(false), mMostCommonKeyWidthSquare(0), mLocaleStr(), mKeyCount(0), mCellHeight(0), mCellWidth(0), mGridHeight(0), mGridWidth(0), - mIsContinuationPossible(false), mInputXs(), mInputYs(), mTimes(), mInputIndice(), - mDistanceCache(), mLengthCache(), mRelativeSpeeds(), mDirections(), + mIsContinuationPossible(false), mSampledInputXs(), mSampledInputYs(), mTimes(), + mInputIndice(), mDistanceCache(), mLengthCache(), mRelativeSpeeds(), mDirections(), mCharProbabilities(), mNearKeysVector(), mSearchKeysVector(), - mTouchPositionCorrectionEnabled(false), mInputSize(0) { + mTouchPositionCorrectionEnabled(false), mSampledInputSize(0) { memset(mInputCodes, 0, sizeof(mInputCodes)); memset(mNormalizedSquaredDistances, 0, sizeof(mNormalizedSquaredDistances)); memset(mPrimaryInputWord, 0, sizeof(mPrimaryInputWord)); @@ -82,14 +82,15 @@ class ProximityInfoState { } inline bool existsAdjacentProximityChars(const int index) const { - if (index < 0 || index >= mInputSize) return false; + if (index < 0 || index >= mSampledInputSize) return false; const int currentCodePoint = getPrimaryCodePointAt(index); const int leftIndex = index - 1; if (leftIndex >= 0 && existsCodePointInProximityAt(leftIndex, currentCodePoint)) { return true; } const int rightIndex = index + 1; - if (rightIndex < mInputSize && existsCodePointInProximityAt(rightIndex, currentCodePoint)) { + if (rightIndex < mSampledInputSize + && existsCodePointInProximityAt(rightIndex, currentCodePoint)) { return true; } return false; @@ -110,7 +111,7 @@ class ProximityInfoState { } inline bool sameAsTyped(const int *word, int length) const { - if (length != mInputSize) { + if (length != mSampledInputSize) { return false; } const int *inputCodes = mInputCodes; @@ -127,19 +128,19 @@ class ProximityInfoState { int getDuration(const int index) const; bool isUsed() const { - return mInputSize > 0; + return mSampledInputSize > 0; } uint32_t size() const { - return mInputSize; + return mSampledInputSize; } int getInputX(const int index) const { - return mInputXs[index]; + return mSampledInputXs[index]; } int getInputY(const int index) const { - return mInputYs[index]; + return mSampledInputYs[index]; } int getLengthCache(const int index) const { @@ -205,7 +206,7 @@ class ProximityInfoState { inline float square(const float x) const { return x * x; } bool hasInputCoordinates() const { - return mInputXs.size() > 0 && mInputYs.size() > 0; + return mSampledInputXs.size() > 0 && mSampledInputYs.size() > 0; } inline const int *getProximityCodePointsAt(const int index) const { @@ -227,6 +228,8 @@ class ProximityInfoState { void popInputData(); void updateAlignPointProbabilities(const int start); bool suppressCharProbabilities(const int index1, const int index2); + void refreshRelativeSpeed(const int inputSize, const int *const xCoordinates, + const int *const yCoordinates, const int *const times, const int lastSavedInputSize); // const const ProximityInfo *mProximityInfo; @@ -241,8 +244,8 @@ class ProximityInfoState { int mGridWidth; bool mIsContinuationPossible; - std::vector mInputXs; - std::vector mInputYs; + std::vector mSampledInputXs; + std::vector mSampledInputYs; std::vector mTimes; std::vector mInputIndice; std::vector mDistanceCache; @@ -263,7 +266,7 @@ class ProximityInfoState { bool mTouchPositionCorrectionEnabled; int mInputCodes[MAX_PROXIMITY_CHARS_SIZE_INTERNAL * MAX_WORD_LENGTH_INTERNAL]; int mNormalizedSquaredDistances[MAX_PROXIMITY_CHARS_SIZE_INTERNAL * MAX_WORD_LENGTH_INTERNAL]; - int mInputSize; + int mSampledInputSize; int mPrimaryInputWord[MAX_WORD_LENGTH_INTERNAL]; }; } // namespace latinime