294 lines
12 KiB
C++
294 lines
12 KiB
C++
/*
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* Copyright (C) 2009, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <cstring> // for memset()
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#define LOG_TAG "LatinIME: jni: BinaryDictionary"
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#include "defines.h" // for macros below
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#ifdef USE_MMAP_FOR_DICTIONARY
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#include <cerrno>
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#include <fcntl.h>
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#include <sys/mman.h>
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#else // USE_MMAP_FOR_DICTIONARY
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#include <cstdlib>
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#include <cstdio> // for fopen() etc.
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#endif // USE_MMAP_FOR_DICTIONARY
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#include "binary_format.h"
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#include "com_android_inputmethod_latin_BinaryDictionary.h"
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#include "correction.h"
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#include "dictionary.h"
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#include "jni.h"
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#include "jni_common.h"
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namespace latinime {
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class ProximityInfo;
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static void releaseDictBuf(const void *dictBuf, const size_t length, const int fd);
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static jlong latinime_BinaryDictionary_open(JNIEnv *env, jobject object,
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jstring sourceDir, jlong dictOffset, jlong dictSize, jint fullWordMultiplier,
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jint maxWordLength, jint maxWords, jint maxPredictions) {
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PROF_OPEN;
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PROF_START(66);
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const jsize sourceDirUtf8Length = env->GetStringUTFLength(sourceDir);
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if (sourceDirUtf8Length <= 0) {
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AKLOGE("DICT: Can't get sourceDir string");
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return 0;
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}
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char sourceDirChars[sourceDirUtf8Length + 1];
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env->GetStringUTFRegion(sourceDir, 0, env->GetStringLength(sourceDir), sourceDirChars);
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sourceDirChars[sourceDirUtf8Length] = '\0';
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int fd = 0;
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void *dictBuf = 0;
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int adjust = 0;
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#ifdef USE_MMAP_FOR_DICTIONARY
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/* mmap version */
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fd = open(sourceDirChars, O_RDONLY);
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if (fd < 0) {
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AKLOGE("DICT: Can't open sourceDir. sourceDirChars=%s errno=%d", sourceDirChars, errno);
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return 0;
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}
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int pagesize = getpagesize();
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adjust = static_cast<int>(dictOffset) % pagesize;
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int adjDictOffset = static_cast<int>(dictOffset) - adjust;
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int adjDictSize = static_cast<int>(dictSize) + adjust;
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dictBuf = mmap(0, adjDictSize, PROT_READ, MAP_PRIVATE, fd, adjDictOffset);
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if (dictBuf == MAP_FAILED) {
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AKLOGE("DICT: Can't mmap dictionary. errno=%d", errno);
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return 0;
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}
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dictBuf = static_cast<char *>(dictBuf) + adjust;
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#else // USE_MMAP_FOR_DICTIONARY
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/* malloc version */
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FILE *file = 0;
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file = fopen(sourceDirChars, "rb");
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if (file == 0) {
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AKLOGE("DICT: Can't fopen sourceDir. sourceDirChars=%s errno=%d", sourceDirChars, errno);
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return 0;
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}
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dictBuf = malloc(dictSize);
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if (!dictBuf) {
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AKLOGE("DICT: Can't allocate memory region for dictionary. errno=%d", errno);
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return 0;
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}
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int ret = fseek(file, (long)dictOffset, SEEK_SET);
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if (ret != 0) {
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AKLOGE("DICT: Failure in fseek. ret=%d errno=%d", ret, errno);
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return 0;
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}
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ret = fread(dictBuf, dictSize, 1, file);
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if (ret != 1) {
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AKLOGE("DICT: Failure in fread. ret=%d errno=%d", ret, errno);
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return 0;
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}
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ret = fclose(file);
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if (ret != 0) {
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AKLOGE("DICT: Failure in fclose. ret=%d errno=%d", ret, errno);
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return 0;
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}
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#endif // USE_MMAP_FOR_DICTIONARY
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if (!dictBuf) {
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AKLOGE("DICT: dictBuf is null");
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return 0;
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}
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Dictionary *dictionary = 0;
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if (BinaryFormat::UNKNOWN_FORMAT
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== BinaryFormat::detectFormat(static_cast<uint8_t *>(dictBuf))) {
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AKLOGE("DICT: dictionary format is unknown, bad magic number");
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#ifdef USE_MMAP_FOR_DICTIONARY
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releaseDictBuf(static_cast<const char *>(dictBuf) - adjust, adjDictSize, fd);
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#else // USE_MMAP_FOR_DICTIONARY
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releaseDictBuf(dictBuf, 0, 0);
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#endif // USE_MMAP_FOR_DICTIONARY
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} else {
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dictionary = new Dictionary(dictBuf, static_cast<int>(dictSize), fd, adjust,
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fullWordMultiplier, maxWordLength, maxWords, maxPredictions);
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}
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PROF_END(66);
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PROF_CLOSE;
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return (jlong)dictionary;
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}
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static int latinime_BinaryDictionary_getSuggestions(JNIEnv *env, jobject object, jlong dict,
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jlong proximityInfo, jlong dicTraverseSession, jintArray xCoordinatesArray,
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jintArray yCoordinatesArray, jintArray timesArray, jintArray pointerIdsArray,
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jintArray inputCodePointsArray, jint arraySize, jint commitPoint, jboolean isGesture,
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jintArray prevWordCodePointsForBigrams, jboolean useFullEditDistance,
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jintArray outputCodePointsArray, jintArray scoresArray, jintArray spaceIndicesArray,
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jintArray outputTypesArray) {
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Dictionary *dictionary = reinterpret_cast<Dictionary *>(dict);
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if (!dictionary) return 0;
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ProximityInfo *pInfo = reinterpret_cast<ProximityInfo *>(proximityInfo);
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void *traverseSession = reinterpret_cast<void *>(dicTraverseSession);
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// Input values
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int xCoordinates[arraySize];
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int yCoordinates[arraySize];
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int times[arraySize];
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int pointerIds[arraySize];
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const jsize inputCodePointsLength = env->GetArrayLength(inputCodePointsArray);
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int inputCodePoints[inputCodePointsLength];
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const jsize prevWordCodePointsLength =
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prevWordCodePointsForBigrams ? env->GetArrayLength(prevWordCodePointsForBigrams) : 0;
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int prevWordCodePointsInternal[prevWordCodePointsLength];
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int *prevWordCodePoints = 0;
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env->GetIntArrayRegion(xCoordinatesArray, 0, arraySize, xCoordinates);
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env->GetIntArrayRegion(yCoordinatesArray, 0, arraySize, yCoordinates);
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env->GetIntArrayRegion(timesArray, 0, arraySize, times);
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env->GetIntArrayRegion(pointerIdsArray, 0, arraySize, pointerIds);
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env->GetIntArrayRegion(inputCodePointsArray, 0, inputCodePointsLength, inputCodePoints);
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if (prevWordCodePointsForBigrams) {
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env->GetIntArrayRegion(prevWordCodePointsForBigrams, 0, prevWordCodePointsLength,
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prevWordCodePointsInternal);
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prevWordCodePoints = prevWordCodePointsInternal;
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}
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// Output values
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const jsize outputCodePointsLength = env->GetArrayLength(outputCodePointsArray);
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int outputCodePoints[outputCodePointsLength];
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const jsize scoresLength = env->GetArrayLength(scoresArray);
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int scores[scoresLength];
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const jsize spaceIndicesLength = env->GetArrayLength(spaceIndicesArray);
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int spaceIndices[spaceIndicesLength];
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const jsize outputTypesLength = env->GetArrayLength(outputTypesArray);
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int outputTypes[outputTypesLength];
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memset(outputCodePoints, 0, sizeof(outputCodePoints));
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memset(scores, 0, sizeof(scores));
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memset(spaceIndices, 0, sizeof(spaceIndices));
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memset(outputTypes, 0, sizeof(outputTypes));
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int count;
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if (isGesture || arraySize > 0) {
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count = dictionary->getSuggestions(pInfo, traverseSession, xCoordinates, yCoordinates,
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times, pointerIds, inputCodePoints, arraySize, prevWordCodePoints,
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prevWordCodePointsLength, commitPoint, isGesture, useFullEditDistance,
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outputCodePoints, scores, spaceIndices, outputTypes);
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} else {
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count = dictionary->getBigrams(prevWordCodePoints, prevWordCodePointsLength,
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inputCodePoints, arraySize, outputCodePoints, scores, outputTypes);
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}
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// Copy back the output values
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env->SetIntArrayRegion(outputCodePointsArray, 0, outputCodePointsLength, outputCodePoints);
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env->SetIntArrayRegion(scoresArray, 0, scoresLength, scores);
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env->SetIntArrayRegion(spaceIndicesArray, 0, spaceIndicesLength, spaceIndices);
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env->SetIntArrayRegion(outputTypesArray, 0, outputTypesLength, outputTypes);
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return count;
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}
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static jint latinime_BinaryDictionary_getFrequency(JNIEnv *env, jobject object, jlong dict,
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jintArray wordArray) {
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Dictionary *dictionary = reinterpret_cast<Dictionary *>(dict);
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if (!dictionary) return 0;
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const jsize codePointLength = env->GetArrayLength(wordArray);
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int codePoints[codePointLength];
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env->GetIntArrayRegion(wordArray, 0, codePointLength, codePoints);
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return dictionary->getFrequency(codePoints, codePointLength);
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}
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static jboolean latinime_BinaryDictionary_isValidBigram(JNIEnv *env, jobject object, jlong dict,
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jintArray wordArray1, jintArray wordArray2) {
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Dictionary *dictionary = reinterpret_cast<Dictionary *>(dict);
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if (!dictionary) return (jboolean) false;
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const jsize codePointLength1 = env->GetArrayLength(wordArray1);
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const jsize codePointLength2 = env->GetArrayLength(wordArray2);
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int codePoints1[codePointLength1];
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int codePoints2[codePointLength2];
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env->GetIntArrayRegion(wordArray1, 0, codePointLength1, codePoints1);
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env->GetIntArrayRegion(wordArray2, 0, codePointLength2, codePoints2);
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return dictionary->isValidBigram(codePoints1, codePointLength1, codePoints2, codePointLength2);
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}
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static jfloat latinime_BinaryDictionary_calcNormalizedScore(JNIEnv *env, jobject object,
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jintArray before, jintArray after, jint score) {
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jsize beforeLength = env->GetArrayLength(before);
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jsize afterLength = env->GetArrayLength(after);
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int beforeCodePoints[beforeLength];
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int afterCodePoints[afterLength];
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env->GetIntArrayRegion(before, 0, beforeLength, beforeCodePoints);
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env->GetIntArrayRegion(after, 0, afterLength, afterCodePoints);
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return Correction::RankingAlgorithm::calcNormalizedScore(beforeCodePoints, beforeLength,
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afterCodePoints, afterLength, score);
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}
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static jint latinime_BinaryDictionary_editDistance(JNIEnv *env, jobject object, jintArray before,
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jintArray after) {
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jsize beforeLength = env->GetArrayLength(before);
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jsize afterLength = env->GetArrayLength(after);
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int beforeCodePoints[beforeLength];
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int afterCodePoints[afterLength];
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env->GetIntArrayRegion(before, 0, beforeLength, beforeCodePoints);
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env->GetIntArrayRegion(after, 0, afterLength, afterCodePoints);
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return Correction::RankingAlgorithm::editDistance(beforeCodePoints, beforeLength,
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afterCodePoints, afterLength);
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}
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static void latinime_BinaryDictionary_close(JNIEnv *env, jobject object, jlong dict) {
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Dictionary *dictionary = reinterpret_cast<Dictionary *>(dict);
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if (!dictionary) return;
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const void *dictBuf = dictionary->getDict();
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if (!dictBuf) return;
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#ifdef USE_MMAP_FOR_DICTIONARY
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releaseDictBuf(static_cast<const char *>(dictBuf) - dictionary->getDictBufAdjust(),
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dictionary->getDictSize() + dictionary->getDictBufAdjust(), dictionary->getMmapFd());
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#else // USE_MMAP_FOR_DICTIONARY
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releaseDictBuf(dictBuf, 0, 0);
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#endif // USE_MMAP_FOR_DICTIONARY
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delete dictionary;
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}
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static void releaseDictBuf(const void *dictBuf, const size_t length, const int fd) {
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#ifdef USE_MMAP_FOR_DICTIONARY
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int ret = munmap(const_cast<void *>(dictBuf), length);
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if (ret != 0) {
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AKLOGE("DICT: Failure in munmap. ret=%d errno=%d", ret, errno);
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}
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ret = close(fd);
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if (ret != 0) {
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AKLOGE("DICT: Failure in close. ret=%d errno=%d", ret, errno);
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}
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#else // USE_MMAP_FOR_DICTIONARY
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free(const_cast<void *>(dictBuf));
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#endif // USE_MMAP_FOR_DICTIONARY
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}
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static JNINativeMethod sMethods[] = {
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{"openNative", "(Ljava/lang/String;JJIIII)J",
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reinterpret_cast<void *>(latinime_BinaryDictionary_open)},
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{"closeNative", "(J)V", reinterpret_cast<void *>(latinime_BinaryDictionary_close)},
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{"getSuggestionsNative", "(JJJ[I[I[I[I[IIIZ[IZ[I[I[I[I)I",
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reinterpret_cast<void *>(latinime_BinaryDictionary_getSuggestions)},
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{"getFrequencyNative", "(J[I)I",
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reinterpret_cast<void *>(latinime_BinaryDictionary_getFrequency)},
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{"isValidBigramNative", "(J[I[I)Z",
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reinterpret_cast<void *>(latinime_BinaryDictionary_isValidBigram)},
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{"calcNormalizedScoreNative", "([I[II)F",
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reinterpret_cast<void *>(latinime_BinaryDictionary_calcNormalizedScore)},
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{"editDistanceNative", "([I[I)I",
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reinterpret_cast<void *>(latinime_BinaryDictionary_editDistance)}
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};
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int register_BinaryDictionary(JNIEnv *env) {
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const char *const kClassPathName = "com/android/inputmethod/latin/BinaryDictionary";
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return registerNativeMethods(env, kClassPathName, sMethods, NELEMS(sMethods));
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}
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} // namespace latinime
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