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Merge "Refactor proximity info state"

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This commit is contained in:
Satoshi Kataoka 2013-01-23 07:05:40 +00:00 committed by Android (Google) Code Review
commit 19d68ce200
5 changed files with 58 additions and 35 deletions
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2
native/jni/src/proximity_info_params.cpp
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@ -25,4 +25,6 @@ const int ProximityInfoParams::NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR_LOG_2
const int ProximityInfoParams::NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR =
1 << NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR_LOG_2;
const float ProximityInfoParams::NOT_A_DISTANCE_FLOAT = -1.0f;
// TODO: Investigate if this is required
const float ProximityInfoParams::SEARCH_KEY_RADIUS_RATIO = 0.95f;
} // namespace latinime

1
native/jni/src/proximity_info_params.h
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@ -29,6 +29,7 @@ class ProximityInfoParams {
static const int MIN_DOUBLE_LETTER_BEELINE_SPEED_PERCENTILE;
static const int NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR;
static const float NOT_A_DISTANCE_FLOAT;
static const float SEARCH_KEY_RADIUS_RATIO;
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(ProximityInfoParams);
static const int NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR_LOG_2;

20
native/jni/src/proximity_info_state.cpp
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@ -116,28 +116,14 @@ void ProximityInfoState::initInputParams(const int pointerId, const float maxPoi
mProximityInfo->getKeyCount(), lastSavedInputSize, mSampledInputSize,
&mSampledInputXs, &mSampledInputYs, &mSpeedRates, &mSampledLengthCache,
&mDistanceCache_G, &mNearKeysVector, &mCharProbabilities);
static const float READ_FORWORD_LENGTH_SCALE = 0.95f;
const int readForwordLength = static_cast<int>(
hypotf(mProximityInfo->getKeyboardWidth(), mProximityInfo->getKeyboardHeight())
* READ_FORWORD_LENGTH_SCALE);
for (int i = 0; i < mSampledInputSize; ++i) {
if (i >= lastSavedInputSize) {
mSearchKeysVector[i].reset();
}
for (int j = max(i, lastSavedInputSize); j < mSampledInputSize; ++j) {
if (mSampledLengthCache[j] - mSampledLengthCache[i] >= readForwordLength) {
break;
}
mSearchKeysVector[i] |= mNearKeysVector[j];
}
}
ProximityInfoStateUtils::updateSearchKeysVector(mProximityInfo, mSampledInputSize,
lastSavedInputSize, &mSampledLengthCache, &mNearKeysVector, &mSearchKeysVector);
}
}
if (DEBUG_SAMPLING_POINTS) {
ProximityInfoStateUtils::dump(isGeometric, inputSize, xCoordinates, yCoordinates,
mSampledInputSize, &mSampledInputXs, &mSampledInputYs, &mSpeedRates,
mSampledInputSize, &mSampledInputXs, &mSampledInputYs, &mSampledTimes, &mSpeedRates,
&mBeelineSpeedPercentiles);
}
// end

63
native/jni/src/proximity_info_state_utils.cpp
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@ -14,6 +14,7 @@
* limitations under the License.
*/
#include <cmath>
#include <sstream> // for debug prints
#include <vector>
@ -37,7 +38,7 @@ namespace latinime {
if (times) {
for (int i = 0; i < inputSize; ++i) {
AKLOGI("(%d) x %d, y %d, time %d",
i, xCoordinates[i], yCoordinates[i], times[i]);
i, inputXCoordinates[i], inputYCoordinates[i], times[i]);
}
}
}
@ -45,7 +46,10 @@ namespace latinime {
if (times) {
for (int i = 0; i < inputSize; ++i) {
if (i > 0) {
ASSERT(times[i] >= times[i - 1]);
if (times[i] < times[i - 1]) {
AKLOGI("Invalid time sequence. %d, %d", times[i], times[i - 1]);
ASSERT(false);
}
}
}
}
@ -469,11 +473,10 @@ namespace latinime {
// 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, mSampledInputXs.back(),
mSampledInputYs.back(), ProximityInfoUtils::getDistanceInt(
x, y, mSampledInputXs.back(), mSampledInputYs.back()),
mProximityInfo->getMostCommonKeyWidth()
/ LAST_POINT_SKIP_DISTANCE_SCALE);
"width = %d", size, x, y, sampledInputXs->back(),
sampledInputYs->back(), getDistanceInt(
x, y, sampledInputXs->back(), sampledInputYs->back()),
mostCommonKeyWidth / LAST_POINT_SKIP_DISTANCE_SCALE);
}
return popped;
}
@ -511,11 +514,12 @@ namespace latinime {
const float averageSpeed, const int id, const int inputSize, const int *const xCoordinates,
const int *const yCoordinates, const int *times, const int sampledInputSize,
const std::vector<int> *const sampledInputXs,
const std::vector<int> *const sampledInputYs, const std::vector<int> *const inputIndice) {
const std::vector<int> *const sampledInputYs,
const std::vector<int> *const sampledInputIndices) {
if (sampledInputSize <= 0 || averageSpeed < 0.001f) {
if (DEBUG_SAMPLING_POINTS) {
AKLOGI("--- invalid state: cancel. size = %d, ave = %f",
mSampledInputSize, mAverageSpeed);
sampledInputSize, averageSpeed);
}
return 1.0f;
}
@ -523,7 +527,7 @@ namespace latinime {
* ProximityInfoParams::LOOKUP_RADIUS_PERCENTILE / MAX_PERCENTILE;
const int x0 = (*sampledInputXs)[id];
const int y0 = (*sampledInputYs)[id];
const int actualInputIndex = (*inputIndice)[id];
const int actualInputIndex = (*sampledInputIndices)[id];
int tempTime = 0;
int tempBeelineDistance = 0;
int start = actualInputIndex;
@ -582,10 +586,10 @@ namespace latinime {
if (DEBUG_DOUBLE_LETTER) {
AKLOGI("--- (%d, %d) double letter: start = %d, end = %d, dist = %d, time = %d,"
" speed = %f, ave = %f, val = %f, start time = %d, end time = %d",
id, mSampledInputIndice[id], start, end, beelineDistance, time,
(static_cast<float>(beelineDistance) / static_cast<float>(time)), mAverageSpeed,
id, (*sampledInputIndices)[id], start, end, beelineDistance, time,
(static_cast<float>(beelineDistance) / static_cast<float>(time)), averageSpeed,
((static_cast<float>(beelineDistance) / static_cast<float>(time))
/ mAverageSpeed), adjustedStartTime, adjustedEndTime);
/ averageSpeed), adjustedStartTime, adjustedEndTime);
}
// Offset 1%
// TODO: Detect double letter more smartly
@ -850,7 +854,6 @@ namespace latinime {
}
}
if (DEBUG_POINTS_PROBABILITY) {
for (int i = 0; i < sampledInputSize; ++i) {
std::stringstream sstream;
@ -916,6 +919,29 @@ namespace latinime {
}
}
/* static */ void ProximityInfoStateUtils::updateSearchKeysVector(
const ProximityInfo *const proximityInfo, const int sampledInputSize,
const int lastSavedInputSize,
const std::vector<int> *const sampledLengthCache,
const std::vector<NearKeycodesSet> *const nearKeysVector,
std::vector<NearKeycodesSet> *searchKeysVector) {
const int readForwordLength = static_cast<int>(
hypotf(proximityInfo->getKeyboardWidth(), proximityInfo->getKeyboardHeight())
* ProximityInfoParams::SEARCH_KEY_RADIUS_RATIO);
for (int i = 0; i < sampledInputSize; ++i) {
if (i >= lastSavedInputSize) {
(*searchKeysVector)[i].reset();
}
for (int j = max(i, lastSavedInputSize); j < sampledInputSize; ++j) {
// TODO: Investigate if this is required. This may not fail.
if ((*sampledLengthCache)[j] - (*sampledLengthCache)[i] >= readForwordLength) {
break;
}
(*searchKeysVector)[i] |= (*nearKeysVector)[j];
}
}
}
// Decreases char probabilities of index0 by checking probabilities of a near point (index1) and
// increases char probabilities of index1 by checking probabilities of index0.
/* static */ bool ProximityInfoStateUtils::suppressCharProbabilities(const int mostCommonKeyWidth,
@ -963,12 +989,13 @@ namespace latinime {
const int *const inputXCoordinates, const int *const inputYCoordinates,
const int sampledInputSize, const std::vector<int> *const sampledInputXs,
const std::vector<int> *const sampledInputYs,
const std::vector<int> *const sampledTimes,
const std::vector<float> *const sampledSpeedRates,
const std::vector<int> *const sampledBeelineSpeedPercentiles) {
if (DEBUG_GEO_FULL) {
for (int i = 0; i < sampledInputSize; ++i) {
AKLOGI("Sampled(%d): x = %d, y = %d, time = %d", i, mSampledInputXs[i],
mSampledInputYs[i], mSampledTimes ? mSampledTimes[i], -1);
AKLOGI("Sampled(%d): x = %d, y = %d, time = %d", i, (*sampledInputXs)[i],
(*sampledInputYs)[i], sampledTimes ? (*sampledTimes)[i] : -1);
}
}
@ -985,8 +1012,8 @@ namespace latinime {
for (int i = 0; i < sampledInputSize; ++i) {
if (isGeometric) {
AKLOGI("%d: x = %d, y = %d, time = %d, relative speed = %.4f, beeline speed = %d",
i, mSampledInputXs[i], mSampledInputYs[i], mSampledTimes[i], mSpeedRates[i],
getBeelineSpeedPercentile(i));
i, (*sampledInputXs)[i], (*sampledInputYs)[i], (*sampledTimes)[i],
(*sampledSpeedRates)[i], (*sampledBeelineSpeedPercentiles)[i]);
}
sampledX << (*sampledInputXs)[i];
sampledY << (*sampledInputYs)[i];

7
native/jni/src/proximity_info_state_utils.h
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@ -72,6 +72,12 @@ class ProximityInfoStateUtils {
const std::vector<float> *const distanceCache_G,
std::vector<NearKeycodesSet> *nearKeysVector,
std::vector<hash_map_compat<int, float> > *charProbabilities);
static void updateSearchKeysVector(
const ProximityInfo *const proximityInfo, const int sampledInputSize,
const int lastSavedInputSize,
const std::vector<int> *const sampledLengthCache,
const std::vector<NearKeycodesSet> *const nearKeysVector,
std::vector<NearKeycodesSet> *searchKeysVector);
static float getPointToKeyByIdLength(const float maxPointToKeyLength,
const std::vector<float> *const distanceCache_G, const int keyCount,
const int inputIndex, const int keyId, const float scale);
@ -99,6 +105,7 @@ class ProximityInfoStateUtils {
const int *const inputXCoordinates, const int *const inputYCoordinates,
const int sampledInputSize, const std::vector<int> *const sampledInputXs,
const std::vector<int> *const sampledInputYs,
const std::vector<int> *const sampledTimes,
const std::vector<float> *const sampledSpeedRates,
const std::vector<int> *const sampledBeelineSpeedPercentiles);
private: