if (STRING_VALID(_src->exposure_time)) {
_dst->exposure_time = strdup(_src->exposure_time);
media_content_retv_free_image_if(_dst->exposure_time == NULL, MEDIA_CONTENT_ERROR_OUT_OF_MEMORY, (image_meta_h)_dst);
if (STRING_VALID(_src->exposure_time)) {
_dst->exposure_time = strdup(_src->exposure_time);
media_content_retv_free_image_if(_dst->exposure_time == NULL, MEDIA_CONTENT_ERROR_OUT_OF_MEMORY, (image_meta_h)_dst);