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");
}
