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Separate state from proximity_info step1 

Bug: 6548943

Change-Id: I7b4fbe20615a28151a74875be43b9f4a20e0dce9
main
Satoshi Kataoka 2012-06-05 17:55:52 +09:00
parent 21b782cf22
commit 3e8c58f68d
9 changed files with 474 additions and 307 deletions
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2
java/src/com/android/inputmethod/keyboard/ProximityInfo.java
View File

@ -27,6 +27,8 @@ import java.util.Arrays;
import java.util.HashMap;
public class ProximityInfo {
/** MAX_PROXIMITY_CHARS_SIZE must be the same as MAX_PROXIMITY_CHARS_SIZE_INTERNAL
* in defines.h */
public static final int MAX_PROXIMITY_CHARS_SIZE = 16;
/** Number of key widths from current touch point to search for nearest keys. */
private static float SEARCH_DISTANCE = 1.2f;

1
native/jni/Android.mk
View File

@ -45,6 +45,7 @@ LATIN_IME_CORE_SRC_FILES := \
correction.cpp \
dictionary.cpp \
proximity_info.cpp \
proximity_info_state.cpp \
unigram_dictionary.cpp
LOCAL_SRC_FILES := \

37
native/jni/src/correction.cpp
View File

@ -27,6 +27,7 @@
#include "defines.h"
#include "dictionary.h"
#include "proximity_info.h"
#include "proximity_info_state.h"
namespace latinime {
@ -308,13 +309,12 @@ Correction::CorrectionType Correction::processUnrelatedCorrectionType() {
return UNRELATED;
}
inline bool isEquivalentChar(ProximityInfo::ProximityType type) {
return type == ProximityInfo::EQUIVALENT_CHAR;
inline bool isEquivalentChar(ProximityType type) {
return type == EQUIVALENT_CHAR;
}
inline bool isProximityCharOrEquivalentChar(ProximityInfo::ProximityType type) {
return type == ProximityInfo::EQUIVALENT_CHAR
|| type == ProximityInfo::NEAR_PROXIMITY_CHAR;
inline bool isProximityCharOrEquivalentChar(ProximityType type) {
return type == EQUIVALENT_CHAR || type == NEAR_PROXIMITY_CHAR;
}
Correction::CorrectionType Correction::processCharAndCalcState(
@ -335,14 +335,14 @@ Correction::CorrectionType Correction::processCharAndCalcState(
bool incremented = false;
if (mLastCharExceeded && mInputIndex == mInputLength - 1) {
// TODO: Do not check the proximity if EditDistance exceeds the threshold
const ProximityInfo::ProximityType matchId =
const ProximityType matchId =
mProximityInfo->getMatchedProximityId(mInputIndex, c, true, &proximityIndex);
if (isEquivalentChar(matchId)) {
mLastCharExceeded = false;
--mExcessiveCount;
mDistances[mOutputIndex] =
mProximityInfo->getNormalizedSquaredDistance(mInputIndex, 0);
} else if (matchId == ProximityInfo::NEAR_PROXIMITY_CHAR) {
} else if (matchId == NEAR_PROXIMITY_CHAR) {
mLastCharExceeded = false;
--mExcessiveCount;
++mProximityCount;
@ -417,13 +417,13 @@ Correction::CorrectionType Correction::processCharAndCalcState(
? (noCorrectionsHappenedSoFar || mProximityCount == 0)
: (noCorrectionsHappenedSoFar && mProximityCount == 0);
ProximityInfo::ProximityType matchedProximityCharId = secondTransposing
? ProximityInfo::EQUIVALENT_CHAR
ProximityType matchedProximityCharId = secondTransposing
? EQUIVALENT_CHAR
: mProximityInfo->getMatchedProximityId(
mInputIndex, c, checkProximityChars, &proximityIndex);
if (ProximityInfo::UNRELATED_CHAR == matchedProximityCharId
|| ProximityInfo::ADDITIONAL_PROXIMITY_CHAR == matchedProximityCharId) {
if (UNRELATED_CHAR == matchedProximityCharId
|| ADDITIONAL_PROXIMITY_CHAR == matchedProximityCharId) {
if (canTryCorrection && mOutputIndex > 0
&& mCorrectionStates[mOutputIndex].mProximityMatching
&& mCorrectionStates[mOutputIndex].mExceeding
@ -451,9 +451,9 @@ Correction::CorrectionType Correction::processCharAndCalcState(
}
}
if (ProximityInfo::UNRELATED_CHAR == matchedProximityCharId
|| ProximityInfo::ADDITIONAL_PROXIMITY_CHAR == matchedProximityCharId) {
if (ProximityInfo::ADDITIONAL_PROXIMITY_CHAR == matchedProximityCharId) {
if (UNRELATED_CHAR == matchedProximityCharId
|| ADDITIONAL_PROXIMITY_CHAR == matchedProximityCharId) {
if (ADDITIONAL_PROXIMITY_CHAR == matchedProximityCharId) {
mAdditionalProximityMatching = true;
}
// TODO: Optimize
@ -543,7 +543,7 @@ Correction::CorrectionType Correction::processCharAndCalcState(
mTransposedCount, mExcessiveCount, c);
}
return processSkipChar(c, isTerminal, false);
} else if (ProximityInfo::ADDITIONAL_PROXIMITY_CHAR == matchedProximityCharId) {
} else if (ADDITIONAL_PROXIMITY_CHAR == matchedProximityCharId) {
// As a last resort, use additional proximity characters
mProximityMatching = true;
++mProximityCount;
@ -574,7 +574,7 @@ Correction::CorrectionType Correction::processCharAndCalcState(
mMatching = true;
++mEquivalentCharCount;
mDistances[mOutputIndex] = mProximityInfo->getNormalizedSquaredDistance(mInputIndex, 0);
} else if (ProximityInfo::NEAR_PROXIMITY_CHAR == matchedProximityCharId) {
} else if (NEAR_PROXIMITY_CHAR == matchedProximityCharId) {
mProximityMatching = true;
++mProximityCount;
mDistances[mOutputIndex] =
@ -737,8 +737,7 @@ int Correction::RankingAlgorithm::calculateFinalProbability(const int inputIndex
multiplyIntCapped(matchWeight, &finalFreq);
}
if (proximityInfo->getMatchedProximityId(0, word[0], true)
== ProximityInfo::UNRELATED_CHAR) {
if (proximityInfo->getMatchedProximityId(0, word[0], true) == UNRELATED_CHAR) {
multiplyRate(FIRST_CHAR_DIFFERENT_DEMOTION_RATE, &finalFreq);
}
@ -796,7 +795,7 @@ int Correction::RankingAlgorithm::calculateFinalProbability(const int inputIndex
static const float R1 = NEUTRAL_SCORE_SQUARED_RADIUS;
static const float R2 = HALF_SCORE_SQUARED_RADIUS;
const float x = (float)squaredDistance
/ ProximityInfo::NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR;
/ ProximityInfoState::NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR;
const float factor = max((x < R1)
? (A * (R1 - x) + B * x) / R1
: (B * (R2 - x) + C * (x - R1)) / (R2 - R1), MIN);

15
native/jni/src/defines.h
View File

@ -225,6 +225,9 @@ static inline void prof_out(void) {
// This is only used for the size of array. Not to be used in c functions.
#define MAX_WORD_LENGTH_INTERNAL 48
// This must be the same as ProximityInfo#MAX_PROXIMITY_CHARS_SIZE, currently it's 16.
#define MAX_PROXIMITY_CHARS_SIZE_INTERNAL 16
// This must be equal to ADDITIONAL_PROXIMITY_CHAR_DELIMITER_CODE in KeyDetector.java
#define ADDITIONAL_PROXIMITY_CHAR_DELIMITER_CODE 2
@ -289,4 +292,16 @@ template<typename T> inline T max(T a, T b) { return a > b ? a : b; }
#define INPUTLENGTH_FOR_DEBUG -1
#define MIN_OUTPUT_INDEX_FOR_DEBUG -1
// Used as a return value for character comparison
typedef enum {
// Same char, possibly with different case or accent
EQUIVALENT_CHAR,
// It is a char located nearby on the keyboard
NEAR_PROXIMITY_CHAR,
// It is an unrelated char
UNRELATED_CHAR,
// Additional proximity char which can differ by language.
ADDITIONAL_PROXIMITY_CHAR
} ProximityType;
#endif // LATINIME_DEFINES_H

283
native/jni/src/proximity_info.cpp
View File

@ -24,6 +24,7 @@
#include "defines.h"
#include "dictionary.h"
#include "proximity_info.h"
#include "proximity_info_state.h"
namespace latinime {
@ -51,23 +52,14 @@ ProximityInfo::ProximityInfo(const std::string localeStr, const int maxProximity
HAS_TOUCH_POSITION_CORRECTION_DATA(keyCount > 0 && keyXCoordinates && keyYCoordinates
&& keyWidths && keyHeights && keyCharCodes && sweetSpotCenterXs
&& sweetSpotCenterYs && sweetSpotRadii),
mLocaleStr(localeStr),
mInputXCoordinates(0), mInputYCoordinates(0),
mTouchPositionCorrectionEnabled(false) {
const int proximityGridLength = GRID_WIDTH * GRID_HEIGHT * MAX_PROXIMITY_CHARS_SIZE;
mProximityCharsArray = new int32_t[proximityGridLength];
mInputCodes = new int32_t[MAX_PROXIMITY_CHARS_SIZE * MAX_WORD_LENGTH_INTERNAL];
mLocaleStr(localeStr) {
if (DEBUG_PROXIMITY_INFO) {
AKLOGI("Create proximity info array %d", proximityGridLength);
}
const int proximityGridLength = GRID_WIDTH * GRID_HEIGHT * MAX_PROXIMITY_CHARS_SIZE;
mProximityCharsArray = new int32_t[proximityGridLength];
memcpy(mProximityCharsArray, proximityCharsArray,
proximityGridLength * sizeof(mProximityCharsArray[0]));
const int normalizedSquaredDistancesLength =
MAX_PROXIMITY_CHARS_SIZE * MAX_WORD_LENGTH_INTERNAL;
mNormalizedSquaredDistances = new int[normalizedSquaredDistancesLength];
for (int i = 0; i < normalizedSquaredDistancesLength; ++i) {
mNormalizedSquaredDistances[i] = NOT_A_DISTANCE;
}
copyOrFillZero(mKeyXCoordinates, keyXCoordinates, KEY_COUNT * sizeof(mKeyXCoordinates[0]));
copyOrFillZero(mKeyYCoordinates, keyYCoordinates, KEY_COUNT * sizeof(mKeyYCoordinates[0]));
@ -81,6 +73,9 @@ ProximityInfo::ProximityInfo(const std::string localeStr, const int maxProximity
copyOrFillZero(mSweetSpotRadii, sweetSpotRadii, KEY_COUNT * sizeof(mSweetSpotRadii[0]));
initializeCodeToKeyIndex();
mProximityInfoState = new ProximityInfoState(this, MAX_PROXIMITY_CHARS_SIZE,
HAS_TOUCH_POSITION_CORRECTION_DATA, MOST_COMMON_KEY_WIDTH_SQUARE, mLocaleStr,
KEY_COUNT, CELL_HEIGHT, CELL_WIDTH, GRID_WIDTH, GRID_HEIGHT);
}
// Build the reversed look up table from the char code to the index in mKeyXCoordinates,
@ -96,9 +91,8 @@ void ProximityInfo::initializeCodeToKeyIndex() {
}
ProximityInfo::~ProximityInfo() {
delete[] mNormalizedSquaredDistances;
delete[] mProximityCharsArray;
delete[] mInputCodes;
delete mProximityInfoState;
}
inline int ProximityInfo::getStartIndexFromCoordinates(const int x, const int y) const {
@ -119,26 +113,18 @@ bool ProximityInfo::hasSpaceProximity(const int x, const int y) const {
if (DEBUG_PROXIMITY_INFO) {
AKLOGI("hasSpaceProximity: index %d, %d, %d", startIndex, x, y);
}
int32_t* proximityCharsArray = mProximityCharsArray;
for (int i = 0; i < MAX_PROXIMITY_CHARS_SIZE; ++i) {
if (DEBUG_PROXIMITY_INFO) {
AKLOGI("Index: %d", mProximityCharsArray[startIndex + i]);
}
if (mProximityCharsArray[startIndex + i] == KEYCODE_SPACE) {
if (proximityCharsArray[startIndex + i] == KEYCODE_SPACE) {
return true;
}
}
return false;
}
bool ProximityInfo::isOnKey(const int keyId, const int x, const int y) const {
if (keyId < 0) return true; // NOT_A_ID is -1, but return whenever < 0 just in case
const int left = mKeyXCoordinates[keyId];
const int top = mKeyYCoordinates[keyId];
const int right = left + mKeyWidths[keyId] + 1;
const int bottom = top + mKeyHeights[keyId];
return left < right && top < bottom && x >= left && x < right && y >= top && y < bottom;
}
int ProximityInfo::squaredDistanceToEdge(const int keyId, const int x, const int y) const {
if (keyId < 0) return true; // NOT_A_ID is -1, but return whenever < 0 just in case
const int left = mKeyXCoordinates[keyId];
@ -154,12 +140,13 @@ int ProximityInfo::squaredDistanceToEdge(const int keyId, const int x, const int
void ProximityInfo::calculateNearbyKeyCodes(
const int x, const int y, const int32_t primaryKey, int *inputCodes) const {
int32_t *proximityCharsArray = mProximityCharsArray;
int insertPos = 0;
inputCodes[insertPos++] = primaryKey;
const int startIndex = getStartIndexFromCoordinates(x, y);
if (startIndex >= 0) {
for (int i = 0; i < MAX_PROXIMITY_CHARS_SIZE; ++i) {
const int32_t c = mProximityCharsArray[startIndex + i];
const int32_t c = proximityCharsArray[startIndex + i];
if (c < KEYCODE_SPACE || c == primaryKey) {
continue;
}
@ -216,113 +203,10 @@ void ProximityInfo::calculateNearbyKeyCodes(
}
}
void ProximityInfo::setInputParams(const int32_t* inputCodes, const int inputLength,
const int* xCoordinates, const int* yCoordinates) {
memset(mInputCodes, 0,
MAX_WORD_LENGTH_INTERNAL * MAX_PROXIMITY_CHARS_SIZE * sizeof(mInputCodes[0]));
for (int i = 0; i < inputLength; ++i) {
const int32_t primaryKey = inputCodes[i];
const int x = xCoordinates[i];
const int y = yCoordinates[i];
int *proximities = &mInputCodes[i * MAX_PROXIMITY_CHARS_SIZE];
calculateNearbyKeyCodes(x, y, primaryKey, proximities);
}
if (DEBUG_PROXIMITY_CHARS) {
for (int i = 0; i < inputLength; ++i) {
AKLOGI("---");
for (int j = 0; j < MAX_PROXIMITY_CHARS_SIZE; ++j) {
int icc = mInputCodes[i * MAX_PROXIMITY_CHARS_SIZE + j];
int icfjc = inputCodes[i * MAX_PROXIMITY_CHARS_SIZE + j];
icc+= 0;
icfjc += 0;
AKLOGI("--- (%d)%c,%c", i, icc, icfjc);
AKLOGI("--- A<%d>,B<%d>", icc, icfjc);
}
}
}
//Keep for debug, sorry
//for (int i = 0; i < MAX_WORD_LENGTH_INTERNAL * MAX_PROXIMITY_CHARS_SIZE; ++i) {
//if (i < inputLength * MAX_PROXIMITY_CHARS_SIZE) {
//mInputCodes[i] = mInputCodesFromJava[i];
//} else {
// mInputCodes[i] = 0;
// }
//}
mInputXCoordinates = xCoordinates;
mInputYCoordinates = yCoordinates;
mTouchPositionCorrectionEnabled =
HAS_TOUCH_POSITION_CORRECTION_DATA && xCoordinates && yCoordinates;
mInputLength = inputLength;
for (int i = 0; i < inputLength; ++i) {
mPrimaryInputWord[i] = getPrimaryCharAt(i);
}
mPrimaryInputWord[inputLength] = 0;
if (DEBUG_PROXIMITY_CHARS) {
AKLOGI("--- setInputParams");
}
for (int i = 0; i < mInputLength; ++i) {
const int *proximityChars = getProximityCharsAt(i);
const int primaryKey = proximityChars[0];
const int x = xCoordinates[i];
const int y = yCoordinates[i];
if (DEBUG_PROXIMITY_CHARS) {
int a = x + y + primaryKey;
a += 0;
AKLOGI("--- Primary = %c, x = %d, y = %d", primaryKey, x, y);
// Keep debug code just in case
//int proximities[50];
//for (int m = 0; m < 50; ++m) {
//proximities[m] = 0;
//}
//calculateNearbyKeyCodes(x, y, primaryKey, proximities);
//for (int l = 0; l < 50 && proximities[l] > 0; ++l) {
//if (DEBUG_PROXIMITY_CHARS) {
//AKLOGI("--- native Proximity (%d) = %c", l, proximities[l]);
//}
//}
}
for (int j = 0; j < MAX_PROXIMITY_CHARS_SIZE && proximityChars[j] > 0; ++j) {
const int currentChar = proximityChars[j];
const float squaredDistance = hasInputCoordinates()
? calculateNormalizedSquaredDistance(getKeyIndex(currentChar), i)
: NOT_A_DISTANCE_FLOAT;
if (squaredDistance >= 0.0f) {
mNormalizedSquaredDistances[i * MAX_PROXIMITY_CHARS_SIZE + j] =
(int)(squaredDistance * NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR);
} else {
mNormalizedSquaredDistances[i * MAX_PROXIMITY_CHARS_SIZE + j] = (j == 0)
? EQUIVALENT_CHAR_WITHOUT_DISTANCE_INFO
: PROXIMITY_CHAR_WITHOUT_DISTANCE_INFO;
}
if (DEBUG_PROXIMITY_CHARS) {
AKLOGI("--- Proximity (%d) = %c", j, currentChar);
}
}
}
}
inline float square(const float x) { return x * x; }
float ProximityInfo::calculateNormalizedSquaredDistance(
const int keyIndex, const int inputIndex) const {
if (keyIndex == NOT_AN_INDEX) {
return NOT_A_DISTANCE_FLOAT;
}
if (!hasSweetSpotData(keyIndex)) {
return NOT_A_DISTANCE_FLOAT;
}
if (NOT_A_COORDINATE == mInputXCoordinates[inputIndex]) {
return NOT_A_DISTANCE_FLOAT;
}
const float squaredDistance = calculateSquaredDistanceFromSweetSpotCenter(keyIndex, inputIndex);
const float squaredRadius = square(mSweetSpotRadii[keyIndex]);
return squaredDistance / squaredRadius;
}
bool ProximityInfo::hasInputCoordinates() const {
return mInputXCoordinates && mInputYCoordinates;
// TODO: remove
void ProximityInfo::initInputParams(const int32_t *inputCodes, const int inputLength,
const int *xCoordinates, const int *yCoordinates) {
mProximityInfoState->initInputParams(inputCodes, inputLength, xCoordinates, yCoordinates);
}
int ProximityInfo::getKeyIndex(const int c) const {
@ -337,131 +221,46 @@ int ProximityInfo::getKeyIndex(const int c) const {
return mCodeToKeyIndex[baseLowerC];
}
float ProximityInfo::calculateSquaredDistanceFromSweetSpotCenter(
const int keyIndex, const int inputIndex) const {
const float sweetSpotCenterX = mSweetSpotCenterXs[keyIndex];
const float sweetSpotCenterY = mSweetSpotCenterYs[keyIndex];
const float inputX = (float)mInputXCoordinates[inputIndex];
const float inputY = (float)mInputYCoordinates[inputIndex];
return square(inputX - sweetSpotCenterX) + square(inputY - sweetSpotCenterY);
}
// TODO: remove
inline const int* ProximityInfo::getProximityCharsAt(const int index) const {
return mInputCodes + (index * MAX_PROXIMITY_CHARS_SIZE);
return mProximityInfoState->getProximityCharsAt(index);
}
// TODO: remove
unsigned short ProximityInfo::getPrimaryCharAt(const int index) const {
return getProximityCharsAt(index)[0];
return mProximityInfoState->getPrimaryCharAt(index);
}
inline bool ProximityInfo::existsCharInProximityAt(const int index, const int c) const {
const int *chars = getProximityCharsAt(index);
int i = 0;
while (chars[i] > 0 && i < MAX_PROXIMITY_CHARS_SIZE) {
if (chars[i++] == c) {
return true;
}
}
return false;
// TODO: remove
bool ProximityInfo::existsCharInProximityAt(const int index, const int c) const {
return mProximityInfoState->existsCharInProximityAt(index, c);
}
// TODO: remove
bool ProximityInfo::existsAdjacentProximityChars(const int index) const {
if (index < 0 || index >= mInputLength) return false;
const int currentChar = getPrimaryCharAt(index);
const int leftIndex = index - 1;
if (leftIndex >= 0 && existsCharInProximityAt(leftIndex, currentChar)) {
return true;
}
const int rightIndex = index + 1;
if (rightIndex < mInputLength && existsCharInProximityAt(rightIndex, currentChar)) {
return true;
}
return false;
return mProximityInfoState->existsAdjacentProximityChars(index);
}
// In the following function, c is the current character of the dictionary word
// currently examined.
// currentChars is an array containing the keys close to the character the
// user actually typed at the same position. We want to see if c is in it: if so,
// then the word contains at that position a character close to what the user
// typed.
// What the user typed is actually the first character of the array.
// proximityIndex is a pointer to the variable where getMatchedProximityId returns
// the index of c in the proximity chars of the input index.
// Notice : accented characters do not have a proximity list, so they are alone
// in their list. The non-accented version of the character should be considered
// "close", but not the other keys close to the non-accented version.
ProximityInfo::ProximityType ProximityInfo::getMatchedProximityId(const int index,
// TODO: remove
ProximityType ProximityInfo::getMatchedProximityId(const int index,
const unsigned short c, const bool checkProximityChars, int *proximityIndex) const {
const int *currentChars = getProximityCharsAt(index);
const int firstChar = currentChars[0];
const unsigned short baseLowerC = toBaseLowerCase(c);
// The first char in the array is what user typed. If it matches right away,
// that means the user typed that same char for this pos.
if (firstChar == baseLowerC || firstChar == c) {
return EQUIVALENT_CHAR;
}
if (!checkProximityChars) return UNRELATED_CHAR;
// If the non-accented, lowercased version of that first character matches c,
// then we have a non-accented version of the accented character the user
// typed. Treat it as a close char.
if (toBaseLowerCase(firstChar) == baseLowerC)
return NEAR_PROXIMITY_CHAR;
// Not an exact nor an accent-alike match: search the list of close keys
int j = 1;
while (j < MAX_PROXIMITY_CHARS_SIZE
&& currentChars[j] > ADDITIONAL_PROXIMITY_CHAR_DELIMITER_CODE) {
const bool matched = (currentChars[j] == baseLowerC || currentChars[j] == c);
if (matched) {
if (proximityIndex) {
*proximityIndex = j;
}
return NEAR_PROXIMITY_CHAR;
}
++j;
}
if (j < MAX_PROXIMITY_CHARS_SIZE
&& currentChars[j] == ADDITIONAL_PROXIMITY_CHAR_DELIMITER_CODE) {
++j;
while (j < MAX_PROXIMITY_CHARS_SIZE
&& currentChars[j] > ADDITIONAL_PROXIMITY_CHAR_DELIMITER_CODE) {
const bool matched = (currentChars[j] == baseLowerC || currentChars[j] == c);
if (matched) {
if (proximityIndex) {
*proximityIndex = j;
}
return ADDITIONAL_PROXIMITY_CHAR;
}
++j;
}
}
// Was not included, signal this as an unrelated character.
return UNRELATED_CHAR;
return mProximityInfoState->getMatchedProximityId(
index, c, checkProximityChars, proximityIndex);
}
bool ProximityInfo::sameAsTyped(const unsigned short *word, int length) const {
if (length != mInputLength) {
return false;
}
const int *inputCodes = mInputCodes;
while (length--) {
if ((unsigned int) *inputCodes != (unsigned int) *word) {
return false;
}
inputCodes += MAX_PROXIMITY_CHARS_SIZE;
word++;
}
return true;
// TODO: remove
int ProximityInfo::getNormalizedSquaredDistance(
const int inputIndex, const int proximityIndex) const {
return mProximityInfoState->getNormalizedSquaredDistance(inputIndex, proximityIndex);
}
const int ProximityInfo::NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR_LOG_2;
const int ProximityInfo::NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR;
const int ProximityInfo::MAX_KEY_COUNT_IN_A_KEYBOARD;
const int ProximityInfo::MAX_CHAR_CODE;
// TODO: remove
const unsigned short* ProximityInfo::getPrimaryInputWord() const {
return mProximityInfoState->getPrimaryInputWord();
}
// TODO: remove
bool ProximityInfo::touchPositionCorrectionEnabled() const {
return mProximityInfoState->touchPositionCorrectionEnabled();
}
} // namespace latinime

85
native/jni/src/proximity_info.h
View File

@ -25,24 +25,10 @@
namespace latinime {
class Correction;
class ProximityInfoState;
class ProximityInfo {
public:
static const int NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR_LOG_2 = 10;
static const int NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR =
1 << NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR_LOG_2;
// Used as a return value for character comparison
typedef enum {
// Same char, possibly with different case or accent
EQUIVALENT_CHAR,
// It is a char located nearby on the keyboard
NEAR_PROXIMITY_CHAR,
// It is an unrelated char
UNRELATED_CHAR,
// Additional proximity char which can differ by language.
ADDITIONAL_PROXIMITY_CHAR
} ProximityType;
ProximityInfo(const std::string localeStr, const int maxProximityCharsSize,
const int keyboardWidth, const int keyboardHeight, const int gridWidth,
@ -53,7 +39,40 @@ class ProximityInfo {
const float *sweetSpotCenterYs, const float *sweetSpotRadii);
~ProximityInfo();
bool hasSpaceProximity(const int x, const int y) const;
void setInputParams(const int32_t *inputCodes, const int inputLength,
int getNormalizedSquaredDistance(const int inputIndex, const int proximityIndex) const;
bool sameAsTyped(const unsigned short *word, int length) const;
int squaredDistanceToEdge(const int keyId, const int x, const int y) const;
bool isOnKey(const int keyId, const int x, const int y) const {
if (keyId < 0) return true; // NOT_A_ID is -1, but return whenever < 0 just in case
const int left = mKeyXCoordinates[keyId];
const int top = mKeyYCoordinates[keyId];
const int right = left + mKeyWidths[keyId] + 1;
const int bottom = top + mKeyHeights[keyId];
return left < right && top < bottom && x >= left && x < right && y >= top && y < bottom;
}
int getKeyIndex(const int c) const;
bool hasSweetSpotData(const int keyIndex) const {
// When there are no calibration data for a key,
// the radius of the key is assigned to zero.
return mSweetSpotRadii[keyIndex] > 0.0;
}
float getSweetSpotRadiiAt(int keyIndex) const {
return mSweetSpotRadii[keyIndex];
}
float getSweetSpotCenterXAt(int keyIndex) const {
return mSweetSpotCenterXs[keyIndex];
}
float getSweetSpotCenterYAt(int keyIndex) const {
return mSweetSpotCenterYs[keyIndex];
}
void calculateNearbyKeyCodes(
const int x, const int y, const int32_t primaryKey, int *inputCodes) const;
////////////////////////////////////
// Access to proximity info state //
// TODO: remove //
////////////////////////////////////
void initInputParams(const int32_t *inputCodes, const int inputLength,
const int *xCoordinates, const int *yCoordinates);
const int* getProximityCharsAt(const int index) const;
unsigned short getPrimaryCharAt(const int index) const;
@ -61,16 +80,9 @@ class ProximityInfo {
bool existsAdjacentProximityChars(const int index) const;
ProximityType getMatchedProximityId(const int index, const unsigned short c,
const bool checkProximityChars, int *proximityIndex = 0) const;
int getNormalizedSquaredDistance(const int inputIndex, const int proximityIndex) const {
return mNormalizedSquaredDistances[inputIndex * MAX_PROXIMITY_CHARS_SIZE + proximityIndex];
}
bool sameAsTyped(const unsigned short *word, int length) const;
const unsigned short* getPrimaryInputWord() const {
return mPrimaryInputWord;
}
bool touchPositionCorrectionEnabled() const {
return mTouchPositionCorrectionEnabled;
}
const unsigned short* getPrimaryInputWord() const;
bool touchPositionCorrectionEnabled() const;
////////////////////////////////////
private:
// The max number of the keys in one keyboard layout
@ -86,16 +98,6 @@ class ProximityInfo {
float calculateSquaredDistanceFromSweetSpotCenter(
const int keyIndex, const int inputIndex) const;
bool hasInputCoordinates() const;
int getKeyIndex(const int c) const;
bool hasSweetSpotData(const int keyIndex) const {
// When there are no calibration data for a key,
// the radius of the key is assigned to zero.
return mSweetSpotRadii[keyIndex] > 0.0;
}
bool isOnKey(const int keyId, const int x, const int y) const;
int squaredDistanceToEdge(const int keyId, const int x, const int y) const;
void calculateNearbyKeyCodes(
const int x, const int y, const int32_t primaryKey, int *inputCodes) const;
const int MAX_PROXIMITY_CHARS_SIZE;
const int KEYBOARD_WIDTH;
@ -108,14 +110,7 @@ class ProximityInfo {
const int KEY_COUNT;
const bool HAS_TOUCH_POSITION_CORRECTION_DATA;
const std::string mLocaleStr;
// TODO: remove this
const int *mInputCodesFromJava;
int32_t *mInputCodes;
const int *mInputXCoordinates;
const int *mInputYCoordinates;
bool mTouchPositionCorrectionEnabled;
int32_t *mProximityCharsArray;
int *mNormalizedSquaredDistances;
int32_t mKeyXCoordinates[MAX_KEY_COUNT_IN_A_KEYBOARD];
int32_t mKeyYCoordinates[MAX_KEY_COUNT_IN_A_KEYBOARD];
int32_t mKeyWidths[MAX_KEY_COUNT_IN_A_KEYBOARD];
@ -124,9 +119,9 @@ class ProximityInfo {
float mSweetSpotCenterXs[MAX_KEY_COUNT_IN_A_KEYBOARD];
float mSweetSpotCenterYs[MAX_KEY_COUNT_IN_A_KEYBOARD];
float mSweetSpotRadii[MAX_KEY_COUNT_IN_A_KEYBOARD];
int mInputLength;
unsigned short mPrimaryInputWord[MAX_WORD_LENGTH_INTERNAL];
int mCodeToKeyIndex[MAX_CHAR_CODE + 1];
// TODO: move to correction.h
ProximityInfoState *mProximityInfoState;
};
} // namespace latinime

97
native/jni/src/proximity_info_state.cpp Normal file
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@ -0,0 +1,97 @@
/*
* 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.
*/
#include <assert.h>
#include <stdint.h>
#include <string>
#define LOG_TAG "LatinIME: proximity_info_state.cpp"
#include "additional_proximity_chars.h"
#include "defines.h"
#include "dictionary.h"
#include "proximity_info.h"
#include "proximity_info_state.h"
namespace latinime {
void ProximityInfoState::initInputParams(const int32_t* inputCodes, const int inputLength,
const int* xCoordinates, const int* yCoordinates) {
memset(mInputCodes, 0,
MAX_WORD_LENGTH_INTERNAL * MAX_PROXIMITY_CHARS_SIZE * sizeof(mInputCodes[0]));
for (int i = 0; i < inputLength; ++i) {
const int32_t primaryKey = inputCodes[i];
const int x = xCoordinates[i];
const int y = yCoordinates[i];
int *proximities = &mInputCodes[i * MAX_PROXIMITY_CHARS_SIZE];
mProximityInfo->calculateNearbyKeyCodes(x, y, primaryKey, proximities);
}
if (DEBUG_PROXIMITY_CHARS) {
for (int i = 0; i < inputLength; ++i) {
AKLOGI("---");
for (int j = 0; j < MAX_PROXIMITY_CHARS_SIZE; ++j) {
int icc = mInputCodes[i * MAX_PROXIMITY_CHARS_SIZE + j];
int icfjc = inputCodes[i * MAX_PROXIMITY_CHARS_SIZE + j];
icc += 0;
icfjc += 0;
AKLOGI("--- (%d)%c,%c", i, icc, icfjc); AKLOGI("--- A<%d>,B<%d>", icc, icfjc);
}
}
}
mInputXCoordinates = xCoordinates;
mInputYCoordinates = yCoordinates;
mTouchPositionCorrectionEnabled = HAS_TOUCH_POSITION_CORRECTION_DATA && xCoordinates
&& yCoordinates;
mInputLength = inputLength;
for (int i = 0; i < inputLength; ++i) {
mPrimaryInputWord[i] = getPrimaryCharAt(i);
}
mPrimaryInputWord[inputLength] = 0;
if (DEBUG_PROXIMITY_CHARS) {
AKLOGI("--- initInputParams");
}
for (int i = 0; i < mInputLength; ++i) {
const int *proximityChars = getProximityCharsAt(i);
const int primaryKey = proximityChars[0];
const int x = xCoordinates[i];
const int y = yCoordinates[i];
if (DEBUG_PROXIMITY_CHARS) {
int a = x + y + primaryKey;
a += 0;
AKLOGI("--- Primary = %c, x = %d, y = %d", primaryKey, x, y);
}
for (int j = 0; j < MAX_PROXIMITY_CHARS_SIZE && proximityChars[j] > 0; ++j) {
const int currentChar = proximityChars[j];
const float squaredDistance =
hasInputCoordinates() ? calculateNormalizedSquaredDistance(
mProximityInfo->getKeyIndex(currentChar), i) :
NOT_A_DISTANCE_FLOAT;
if (squaredDistance >= 0.0f) {
mNormalizedSquaredDistances[i * MAX_PROXIMITY_CHARS_SIZE + j] =
(int) (squaredDistance * NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR);
} else {
mNormalizedSquaredDistances[i * MAX_PROXIMITY_CHARS_SIZE + j] =
(j == 0) ? EQUIVALENT_CHAR_WITHOUT_DISTANCE_INFO :
PROXIMITY_CHAR_WITHOUT_DISTANCE_INFO;
}
if (DEBUG_PROXIMITY_CHARS) {
AKLOGI("--- Proximity (%d) = %c", j, currentChar);
}
}
}
}
} // namespace latinime

259
native/jni/src/proximity_info_state.h Normal file
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@ -0,0 +1,259 @@
/*
* 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.
*/
#ifndef LATINIME_PROXIMITY_INFO_STATE_H
#define LATINIME_PROXIMITY_INFO_STATE_H
#include <assert.h>
#include <stdint.h>
#include <string>
#include "additional_proximity_chars.h"
#include "defines.h"
namespace latinime {
class ProximityInfo;
class ProximityInfoState {
public:
static const int NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR_LOG_2 = 10;
static const int NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR =
1 << NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR_LOG_2;
// The max number of the keys in one keyboard layout
static const int MAX_KEY_COUNT_IN_A_KEYBOARD = 64;
// The upper limit of the char code in mCodeToKeyIndex
static const int MAX_CHAR_CODE = 127;
static const float NOT_A_DISTANCE_FLOAT = -1.0f;
static const int NOT_A_CODE = -1;
/////////////////////////////////////////
// Defined in proximity_info_state.cpp //
/////////////////////////////////////////
void initInputParams(const int32_t* inputCodes, const int inputLength,
const int* xCoordinates, const int* yCoordinates);
/////////////////////////////////////////
// Defined here //
/////////////////////////////////////////
// TODO: Move the constructor to initInputParams
ProximityInfoState(ProximityInfo* proximityInfo, const int maxProximityCharsSize,
const bool hasTouchPositionCorrectionData, const int mostCommonKeyWidthSquare,
const std::string localeStr, const int keyCount, const int cellHeight,
const int cellWidth, const int gridHeight, const int gridWidth)
: mProximityInfo(proximityInfo),
MAX_PROXIMITY_CHARS_SIZE(maxProximityCharsSize),
HAS_TOUCH_POSITION_CORRECTION_DATA(hasTouchPositionCorrectionData),
MOST_COMMON_KEY_WIDTH_SQUARE(mostCommonKeyWidthSquare),
LOCALE_STR(localeStr),
KEY_COUNT(keyCount),
CELL_HEIGHT(cellHeight),
CELL_WIDTH(cellWidth),
GRID_HEIGHT(gridHeight),
GRID_WIDTH(gridWidth),
mInputXCoordinates(0),
mInputYCoordinates(0),
mTouchPositionCorrectionEnabled(false) {
const int normalizedSquaredDistancesLength =
MAX_PROXIMITY_CHARS_SIZE_INTERNAL * MAX_WORD_LENGTH_INTERNAL;
for (int i = 0; i < normalizedSquaredDistancesLength; ++i) {
mNormalizedSquaredDistances[i] = NOT_A_DISTANCE;
}
}
inline const int* getProximityCharsAt(const int index) const {
return mInputCodes + (index * MAX_PROXIMITY_CHARS_SIZE);
}
inline unsigned short getPrimaryCharAt(const int index) const {
return getProximityCharsAt(index)[0];
}
inline bool existsCharInProximityAt(const int index, const int c) const {
const int *chars = getProximityCharsAt(index);
int i = 0;
while (chars[i] > 0 && i < MAX_PROXIMITY_CHARS_SIZE) {
if (chars[i++] == c) {
return true;
}
}
return false;
}
inline bool existsAdjacentProximityChars(const int index) const {
if (index < 0 || index >= mInputLength) return false;
const int currentChar = getPrimaryCharAt(index);
const int leftIndex = index - 1;
if (leftIndex >= 0 && existsCharInProximityAt(leftIndex, currentChar)) {
return true;
}
const int rightIndex = index + 1;
if (rightIndex < mInputLength && existsCharInProximityAt(rightIndex, currentChar)) {
return true;
}
return false;
}
// In the following function, c is the current character of the dictionary word
// currently examined.
// currentChars is an array containing the keys close to the character the
// user actually typed at the same position. We want to see if c is in it: if so,
// then the word contains at that position a character close to what the user
// typed.
// What the user typed is actually the first character of the array.
// proximityIndex is a pointer to the variable where getMatchedProximityId returns
// the index of c in the proximity chars of the input index.
// Notice : accented characters do not have a proximity list, so they are alone
// in their list. The non-accented version of the character should be considered
// "close", but not the other keys close to the non-accented version.
inline ProximityType getMatchedProximityId(const int index,
const unsigned short c, const bool checkProximityChars, int *proximityIndex) const {
const int *currentChars = getProximityCharsAt(index);
const int firstChar = currentChars[0];
const unsigned short baseLowerC = toBaseLowerCase(c);
// The first char in the array is what user typed. If it matches right away,
// that means the user typed that same char for this pos.
if (firstChar == baseLowerC || firstChar == c) {
return EQUIVALENT_CHAR;
}
if (!checkProximityChars) return UNRELATED_CHAR;
// If the non-accented, lowercased version of that first character matches c,
// then we have a non-accented version of the accented character the user
// typed. Treat it as a close char.
if (toBaseLowerCase(firstChar) == baseLowerC)
return NEAR_PROXIMITY_CHAR;
// Not an exact nor an accent-alike match: search the list of close keys
int j = 1;
while (j < MAX_PROXIMITY_CHARS_SIZE
&& currentChars[j] > ADDITIONAL_PROXIMITY_CHAR_DELIMITER_CODE) {
const bool matched = (currentChars[j] == baseLowerC || currentChars[j] == c);
if (matched) {
if (proximityIndex) {
*proximityIndex = j;
}
return NEAR_PROXIMITY_CHAR;
}
++j;
}
if (j < MAX_PROXIMITY_CHARS_SIZE
&& currentChars[j] == ADDITIONAL_PROXIMITY_CHAR_DELIMITER_CODE) {
++j;
while (j < MAX_PROXIMITY_CHARS_SIZE
&& currentChars[j] > ADDITIONAL_PROXIMITY_CHAR_DELIMITER_CODE) {
const bool matched = (currentChars[j] == baseLowerC || currentChars[j] == c);
if (matched) {
if (proximityIndex) {
*proximityIndex = j;
}
return ADDITIONAL_PROXIMITY_CHAR;
}
++j;
}
}
// Was not included, signal this as an unrelated character.
return UNRELATED_CHAR;
}
inline int getNormalizedSquaredDistance(
const int inputIndex, const int proximityIndex) const {
return mNormalizedSquaredDistances[inputIndex * MAX_PROXIMITY_CHARS_SIZE + proximityIndex];
}
inline const unsigned short* getPrimaryInputWord() const {
return mPrimaryInputWord;
}
inline bool touchPositionCorrectionEnabled() const {
return mTouchPositionCorrectionEnabled;
}
private:
inline float square(const float x) const { return x * x; }
float calculateNormalizedSquaredDistance(
const int keyIndex, const int inputIndex) const {
if (keyIndex == NOT_AN_INDEX) {
return NOT_A_DISTANCE_FLOAT;
}
if (!mProximityInfo->hasSweetSpotData(keyIndex)) {
return NOT_A_DISTANCE_FLOAT;
}
if (NOT_A_COORDINATE == mInputXCoordinates[inputIndex]) {
return NOT_A_DISTANCE_FLOAT;
}
const float squaredDistance = calculateSquaredDistanceFromSweetSpotCenter(
keyIndex, inputIndex);
const float squaredRadius = square(mProximityInfo->getSweetSpotRadiiAt(keyIndex));
return squaredDistance / squaredRadius;
}
bool hasInputCoordinates() const {
return mInputXCoordinates && mInputYCoordinates;
}
float calculateSquaredDistanceFromSweetSpotCenter(
const int keyIndex, const int inputIndex) const {
const float sweetSpotCenterX = mProximityInfo->getSweetSpotCenterXAt(keyIndex);
const float sweetSpotCenterY = mProximityInfo->getSweetSpotCenterYAt(keyIndex);
const float inputX = (float)mInputXCoordinates[inputIndex];
const float inputY = (float)mInputYCoordinates[inputIndex];
return square(inputX - sweetSpotCenterX) + square(inputY - sweetSpotCenterY);
}
bool sameAsTyped(const unsigned short *word, int length) const {
if (length != mInputLength) {
return false;
}
const int *inputCodes = mInputCodes;
while (length--) {
if ((unsigned int) *inputCodes != (unsigned int) *word) {
return false;
}
inputCodes += MAX_PROXIMITY_CHARS_SIZE;
word++;
}
return true;
}
// TODO: const
ProximityInfo *mProximityInfo;
const int MAX_PROXIMITY_CHARS_SIZE;
const bool HAS_TOUCH_POSITION_CORRECTION_DATA;
const int MOST_COMMON_KEY_WIDTH_SQUARE;
const std::string LOCALE_STR;
const int KEY_COUNT;
const int CELL_HEIGHT;
const int CELL_WIDTH;
const int GRID_HEIGHT;
const int GRID_WIDTH;
const int *mInputXCoordinates;
const int *mInputYCoordinates;
bool mTouchPositionCorrectionEnabled;
int32_t mInputCodes[MAX_PROXIMITY_CHARS_SIZE_INTERNAL * MAX_WORD_LENGTH_INTERNAL];
int mNormalizedSquaredDistances[MAX_PROXIMITY_CHARS_SIZE_INTERNAL * MAX_WORD_LENGTH_INTERNAL];
int mInputLength;
unsigned short mPrimaryInputWord[MAX_WORD_LENGTH_INTERNAL];
};
} // namespace latinime
#endif // LATINIME_PROXIMITY_INFO_STATE_H

2
native/jni/src/unigram_dictionary.cpp
View File

@ -305,7 +305,7 @@ void UnigramDictionary::initSuggestions(ProximityInfo *proximityInfo, const int
AKLOGI("initSuggest");
DUMP_WORD_INT(codes, inputLength);
}
proximityInfo->setInputParams(codes, inputLength, xCoordinates, yCoordinates);
proximityInfo->initInputParams(codes, inputLength, xCoordinates, yCoordinates);
const int maxDepth = min(inputLength * MAX_DEPTH_MULTIPLIER, MAX_WORD_LENGTH);
correction->initCorrection(proximityInfo, inputLength, maxDepth);
}