ngx_http_image_filter_jpeg_quality  106 http/modules/ngx_http_image_filter_module.c static char *ngx_http_image_filter_jpeg_quality(ngx_conf_t *cf,
ngx_http_image_filter_jpeg_quality  122 http/modules/ngx_http_image_filter_module.c       ngx_http_image_filter_jpeg_quality,