text: #ifndef NGX_HTTP_GM_UNSHARP_H
  #define NGX_HTTP_GM_UNSHARP_H
  
  #include "ngx_http_gm_common.h"
  
  ngx_int_t gm_unsharp_image(ngx_http_request_t *r, void *option, Image **image, ImageInfo *image_info);
  
  #endif
  