static void CameraMetadata_writeValues(JNIEnv *env, jobject thiz, jint tag, jbyteArray src) {
ALOGV("%s (tag = %d)", __FUNCTION__, tag);
CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz);
if (metadata == NULL) return;
int tagType = get_camera_metadata_tag_type(tag);
if (tagType == -1) {
jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
"Tag (%d) did not have a type", tag);
return;
}
status_t res;
if (src == NULL) {
// If array is NULL, delete the entry
if (metadata->exists(tag)) {
res = metadata->erase(tag);
ALOGV("%s: Erase values (res = %d)", __FUNCTION__, res);
} else {
res = OK;
ALOGV("%s: Don't need to erase", __FUNCTION__);
}
} else {
// Copy from java array into native array
ScopedByteArrayRO arrayReader(env, src);
if (arrayReader.get() == NULL) return;
res = Helpers::updateAny(metadata, static_cast<uint32_t>(tag),
tagType, arrayReader.get(), arrayReader.size());
ALOGV("%s: Update values (res = %d)", __FUNCTION__, res);
}
if (res == OK) {
return;
} else if (res == BAD_VALUE) {
jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
"Src byte array was poorly formed");
} else if (res == INVALID_OPERATION) {
jniThrowExceptionFmt(env, "java/lang/IllegalStateException",
"Internal error while trying to update metadata");
} else {
jniThrowExceptionFmt(env, "java/lang/IllegalStateException",
"Unknown error (%d) while trying to update "
"metadata", res);
}
}
static jbyteArray CameraMetadata_readValues(JNIEnv *env, jobject thiz, jint tag) {
ALOGV("%s (tag = %d)", __FUNCTION__, tag);
CameraMetadata* metadata = CameraMetadata_getPointerThrow(env, thiz);
if (metadata == NULL) return NULL;
int tagType = get_camera_metadata_tag_type(tag);
if (tagType == -1) {
jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
"Tag (%d) did not have a type", tag);
return NULL;
}
size_t tagSize = Helpers::getTypeSize(tagType);
camera_metadata_entry entry = metadata->find(tag);
if (entry.count == 0) {
if (!metadata->exists(tag)) {
ALOGV("%s: Tag %d does not have any entries", __FUNCTION__, tag);
return NULL;
} else {
// OK: we will return a 0-sized array.
ALOGV("%s: Tag %d had an entry, but it had 0 data", __FUNCTION__,
tag);
}
}
jsize byteCount = entry.count * tagSize;
jbyteArray byteArray = env->NewByteArray(byteCount);
if (env->ExceptionCheck()) return NULL;
// Copy into java array from native array
ScopedByteArrayRW arrayWriter(env, byteArray);
memcpy(arrayWriter.get(), entry.data.u8, byteCount);
return byteArray;
}