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Cleanup speed related code 

Change-Id: Id6ea99a9e28f20f3ac34b9bfdac1bf62fd7a9a5d
main
Satoshi Kataoka 2012-11-16 19:03:36 +09:00
parent f25cc4405e
commit feec20a692
2 changed files with 149 additions and 141 deletions
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259
native/jni/src/proximity_info_state.cpp
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@ -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<float>(sumLength) / static_cast<float>(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<float>(length) / static_cast<float>(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<int>(
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<float>(sumLength) / static_cast<float>(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<float>(length) / static_cast<float>(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<float>(mInputXs[inputIndex]);
const float inputY = static_cast<float>(mInputYs[inputIndex]);
const float inputX = static_cast<float>(mSampledInputXs[inputIndex]);
const float inputY = static_cast<float>(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<int, float>::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<float>(MAX_POINT_TO_KEY_LENGTH);
int character = NOT_AN_INDEX;
for (hash_map_compat<int, float>::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<int, float>::const_iterator it = mCharProbabilities[index].find(keyIndex);
if (it != mCharProbabilities[index].end()) {
return it->second;

31
native/jni/src/proximity_info_state.h
View File

@ -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<int> mInputXs;
std::vector<int> mInputYs;
std::vector<int> mSampledInputXs;
std::vector<int> mSampledInputYs;
std::vector<int> mTimes;
std::vector<int> mInputIndice;
std::vector<float> 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