static void saveAttributes(JNIEnv *env, jobject jobj, jstring jfilename, jstring jattributes) { LOGI("******************************** saveAttributes"); // format of attributes string passed from java: // "attrCnt attr1=valueLen value1attr2=value2Len value2..." // example input: "4 ImageLength=4 1024Model=6 FooImageWidth=4 1280Make=3 FOO" ExifElement_t* exifElementTable = NULL; const char* filename = NULL; uchar* thumbnailData = NULL; int attrCnt = 0; const char* attributes = (*env)->GetStringUTFChars(env, jattributes, NULL); if (attributes == NULL) { goto exit; } // Get the number of attributes - it's the first number in the string. attrCnt = atoi(attributes); char* attrPtr = strchr(attributes, ' ') + 1; LOGD("attribute count %d attrPtr %s\n", attrCnt, attrPtr); // Load all the hash exif elements into a more c-like structure exifElementTable = malloc(sizeof(ExifElement_t) * attrCnt); if (exifElementTable == NULL) { goto exit; } int i; char tag[100]; int hasDateTimeTag = FALSE; int gpsTagCount = 0; int exifTagCount = 0; int tagValue; int tagFound; ExifElement_t* item; for (i = 0; i < attrCnt; i++) { // get an element from the attribute string and add it to the c structure // first, extract the attribute name tagFound = 0; char* tagEnd = strchr(attrPtr, '='); if (tagEnd == 0) { LOGE("saveAttributes: couldn't find end of tag"); goto exit; } if (tagEnd - attrPtr > 99) { LOGE("saveAttributes: attribute tag way too long"); goto exit; } memcpy(tag, attrPtr, tagEnd - attrPtr); tag[tagEnd - attrPtr] = 0; exifElementTable[i].Format = 0; exifElementTable[i].Tag = 0; exifElementTable[i].GpsTag = FALSE; if (IsGpsTag(tag)) { tagValue = GpsTagNameToValue(tag); if( tagValue > -1 ) { LOGV("Tag '%s' with value: X%x", tag, tagValue); exifElementTable[i].GpsTag = TRUE; exifElementTable[i].Tag = GpsTagNameToValue(tag); ++gpsTagCount; tagFound = 1; } else { LOGE("(GPS) Skipping gps tag: %s = %i", tag, tagValue); } } else { tagValue = TagNameToValue(tag); if( tagValue > -1 ) { LOGV("Tag '%s' with value: X%x", tag, tagValue); exifElementTable[i].GpsTag = FALSE; exifElementTable[i].Tag = tagValue; ++exifTagCount; tagFound = 1; } else { LOGE("(EXIF) Skipping tag %s = %i", tag, tagValue); } } LOGV("tagFound: %i", tagFound); attrPtr = tagEnd + 1; // next get the length of the attribute value int valueLen = atoi(attrPtr); if (IsDateTimeTag(exifElementTable[i].Tag)) { hasDateTimeTag = TRUE; } attrPtr = strchr(attrPtr, ' ') + 1; if (attrPtr == 0) { LOGE("saveAttributes: couldn't find end of value len"); goto exit; } exifElementTable[i].Value = malloc(valueLen + 1); if (exifElementTable[i].Value == NULL) { goto exit; } memcpy(exifElementTable[i].Value, attrPtr, valueLen); exifElementTable[i].Value[valueLen] = 0; exifElementTable[i].DataLength = valueLen; attrPtr += valueLen; LOGD("tag %s id %d value %s data length=%d isGps=%d", tag, exifElementTable[i].Tag, exifElementTable[i].Value, exifElementTable[i].DataLength, exifElementTable[i].GpsTag); } LOGD("Total tags: %i - %i ( total was: %i )", exifTagCount, gpsTagCount, attrCnt); filename = (*env)->GetStringUTFChars(env, jfilename, NULL); LOGD("Call loadAttributes() with filename is %s. Loading exif info\n", filename); loadExifInfo(filename, TRUE); // DEBUG ONLY ---------- // ShowTags = TRUE; // ShowImageInfo(TRUE); // LOGD("create exif 2"); // --------------------- // If the jpg file has a thumbnail, preserve it. int thumbnailLength = ImageInfo.ThumbnailSize; if (ImageInfo.ThumbnailOffset) { Section_t* ExifSection = FindSection(M_EXIF); if (ExifSection) { uchar* thumbnailPointer = ExifSection->Data + ImageInfo.ThumbnailOffset + 8; thumbnailData = (uchar*)malloc(ImageInfo.ThumbnailSize); // if the malloc fails, we just won't copy the thumbnail if (thumbnailData) { memcpy(thumbnailData, thumbnailPointer, thumbnailLength); } } } create_EXIF_Elements(exifElementTable, exifTagCount, gpsTagCount, attrCnt, hasDateTimeTag); if (thumbnailData) { copyThumbnailData(thumbnailData, thumbnailLength); } exit: LOGE("cleaning up now in saveAttributes"); // try to clean up resources if (attributes) { (*env)->ReleaseStringUTFChars(env, jattributes, attributes); } if (filename) { (*env)->ReleaseStringUTFChars(env, jfilename, filename); } if (exifElementTable) { // free the table for (i = 0; i < attrCnt; i++) { free(exifElementTable[i].Value); } free(exifElementTable); } if (thumbnailData) { free(thumbnailData); } LOGD("returning from saveAttributes"); }
static void saveAttributes(JNIEnv *env, jobject jobj, jstring jfilename, jstring jattributes) { #ifdef SUPERDEBUG LOGE("******************************** saveAttributes\n"); #endif // format of attributes string passed from java: // "attrCnt attr1=valueLen value1attr2=value2Len value2..." // example input: "4 ImageLength=4 1024Model=6 FooImageWidth=4 1280Make=3 FOO" ExifElement_t* exifElementTable = NULL; const char* filename = NULL; uchar* thumbnailData = NULL; int attrCnt = 0; const char* attributes = (*env)->GetStringUTFChars(env, jattributes, NULL); if (attributes == NULL) { goto exit; } #ifdef SUPERDEBUG LOGE("attributes %s\n", attributes); #endif // Get the number of attributes - it's the first number in the string. attrCnt = atoi(attributes); char* attrPtr = strchr(attributes, ' ') + 1; #ifdef SUPERDEBUG LOGE("attribute count %d attrPtr %s\n", attrCnt, attrPtr); #endif // Load all the hash exif elements into a more c-like structure exifElementTable = malloc(sizeof(ExifElement_t) * attrCnt); if (exifElementTable == NULL) { goto exit; } #ifdef OUTOFMEMORYTEST1 goto exit; #endif int i; char tag[100]; int gpsTagCount = 0; int exifTagCount = 0; for (i = 0; i < attrCnt; i++) { // get an element from the attribute string and add it to the c structure // first, extract the attribute name char* tagEnd = strchr(attrPtr, '='); if (tagEnd == 0) { #ifdef SUPERDEBUG LOGE("saveAttributes: couldn't find end of tag"); #endif goto exit; } if (tagEnd - attrPtr > 99) { #ifdef SUPERDEBUG LOGE("saveAttributes: attribute tag way too long"); #endif goto exit; } memcpy(tag, attrPtr, tagEnd - attrPtr); tag[tagEnd - attrPtr] = 0; if (IsGpsTag(tag)) { exifElementTable[i].GpsTag = TRUE; exifElementTable[i].Tag = GpsTagNameToValue(tag); ++gpsTagCount; } else { exifElementTable[i].GpsTag = FALSE; exifElementTable[i].Tag = TagNameToValue(tag); ++exifTagCount; } attrPtr = tagEnd + 1; // next get the length of the attribute value int valueLen = atoi(attrPtr); attrPtr = strchr(attrPtr, ' ') + 1; if (attrPtr == 0) { #ifdef SUPERDEBUG LOGE("saveAttributes: couldn't find end of value len"); #endif goto exit; } exifElementTable[i].Value = malloc(valueLen + 1); if (exifElementTable[i].Value == NULL) { goto exit; } memcpy(exifElementTable[i].Value, attrPtr, valueLen); exifElementTable[i].Value[valueLen] = 0; exifElementTable[i].DataLength = valueLen; attrPtr += valueLen; #ifdef SUPERDEBUG LOGE("tag %s id %d value %s data length=%d isGps=%d", tag, exifElementTable[i].Tag, exifElementTable[i].Value, exifElementTable[i].DataLength, exifElementTable[i].GpsTag); #endif } filename = (*env)->GetStringUTFChars(env, jfilename, NULL); #ifdef SUPERDEBUG LOGE("Call loadAttributes() with filename is %s. Loading exif info\n", filename); #endif loadExifInfo(filename, TRUE); #ifdef SUPERDEBUG // DumpExifMap = TRUE; ShowTags = TRUE; ShowImageInfo(TRUE); LOGE("create exif 2"); #endif // If the jpg file has a thumbnail, preserve it. int thumbnailLength = ImageInfo.ThumbnailSize; if (ImageInfo.ThumbnailOffset) { Section_t* ExifSection = FindSection(M_EXIF); if (ExifSection) { uchar* thumbnailPointer = ExifSection->Data + ImageInfo.ThumbnailOffset + 8; thumbnailData = (uchar*)malloc(ImageInfo.ThumbnailSize); // if the malloc fails, we just won't copy the thumbnail if (thumbnailData) { memcpy(thumbnailData, thumbnailPointer, thumbnailLength); } } } create_EXIF(exifElementTable, exifTagCount, gpsTagCount); if (thumbnailData) { copyThumbnailData(thumbnailData, thumbnailLength); } exit: #ifdef SUPERDEBUG LOGE("cleaning up now in saveAttributes"); #endif // try to clean up resources if (attributes) { (*env)->ReleaseStringUTFChars(env, jattributes, attributes); } if (filename) { (*env)->ReleaseStringUTFChars(env, jfilename, filename); } if (exifElementTable) { // free the table for (i = 0; i < attrCnt; i++) { free(exifElementTable[i].Value); } free(exifElementTable); } if (thumbnailData) { free(thumbnailData); } #ifdef SUPERDEBUG LOGE("returning from saveAttributes"); #endif // Temporarily saving these commented out lines because they represent a lot of figuring out // patterns for JNI. // // Get link to Method "entrySet" // jmethodID entrySetMethod = (*env)->GetMethodID(env, jclass_of_hashmap, "entrySet", "()Ljava/util/Set;"); // // // Invoke the "entrySet" method on the HashMap object // jobject jobject_of_entryset = (*env)->CallObjectMethod(env, hashMap, entrySetMethod); // // // Get the Set Class // jclass jclass_of_set = (*env)->FindClass(env, "java/util/Set"); // // if (jclass_of_set == 0) { // printf("java/util/Set lookup failed\n"); // return; // } // // // Get link to Method "iterator" // jmethodID iteratorMethod = (*env)->GetMethodID(env, jclass_of_set, "iterator", "()Ljava/util/Iterator;"); // // // Invoke the "iterator" method on the jobject_of_entryset variable of type Set // jobject jobject_of_iterator = (*env)->CallObjectMethod(env, jobject_of_entryset, iteratorMethod); // // // Get the "Iterator" class // jclass jclass_of_iterator = (*env)->FindClass(env, "java/util/Iterator"); // // // Get link to Method "hasNext" // jmethodID hasNextMethod = (*env)->GetMethodID(env, jclass_of_iterator, "hasNext", "()Z"); // // // Invoke - Get the value hasNextMethod // jboolean bHasNext = (*env)->CallBooleanMethod(env, jobject_of_iterator, hasNextMethod); // // Get link to Method "hasNext" // jmethodID nextMethod = (*env)->GetMethodID(env, jclass_of_iterator, "next", "()Ljava/util/Map/Entry;"); // // jclass jclass_of_mapentry = (*env)->FindClass(env, "java/util/Map/Entry"); // // jmethodID getKeyMethod = (*env)->GetMethodID(env, jclass_of_mapentry, "getKey", "()Ljava/lang/Object"); // // jmethodID getValueMethod = (*env)->GetMethodID(env, jclass_of_mapentry, "getValue", "()Ljava/lang/Object"); }