status_t CameraMetadata::append(const camera_metadata_t* other) {
if (mLocked) {
ALOGE("%s: CameraMetadata is locked", __FUNCTION__);
return INVALID_OPERATION;
}
size_t extraEntries = get_camera_metadata_entry_count(other);
size_t extraData = get_camera_metadata_data_count(other);
resizeIfNeeded(extraEntries, extraData);
return append_camera_metadata(mBuffer, other);
}
status_t CameraMetadata::resizeIfNeeded(size_t extraEntries, size_t extraData) {
if (mBuffer == NULL) {
mBuffer = allocate_camera_metadata(extraEntries * 2, extraData * 2);
if (mBuffer == NULL) {
ALOGE("%s: Can't allocate larger metadata buffer", __FUNCTION__);
return NO_MEMORY;
}
} else {
size_t currentEntryCount = get_camera_metadata_entry_count(mBuffer);
size_t currentEntryCap = get_camera_metadata_entry_capacity(mBuffer);
size_t newEntryCount = currentEntryCount +
extraEntries;
newEntryCount = (newEntryCount > currentEntryCap) ?
newEntryCount * 2 : currentEntryCap;
size_t currentDataCount = get_camera_metadata_data_count(mBuffer);
size_t currentDataCap = get_camera_metadata_data_capacity(mBuffer);
size_t newDataCount = currentDataCount +
extraData;
newDataCount = (newDataCount > currentDataCap) ?
newDataCount * 2 : currentDataCap;
if (newEntryCount > currentEntryCap ||
newDataCount > currentDataCap) {
camera_metadata_t *oldBuffer = mBuffer;
mBuffer = allocate_camera_metadata(newEntryCount,
newDataCount);
if (mBuffer == NULL) {
ALOGE("%s: Can't allocate larger metadata buffer", __FUNCTION__);
return NO_MEMORY;
}
append_camera_metadata(mBuffer, oldBuffer);
free_camera_metadata(oldBuffer);
}
}
return OK;
}
status_t CameraMetadata::append(const CameraMetadata &other) {
return append_camera_metadata(mBuffer, other.mBuffer);
}
