ngx_http_image_filter_sharpen 112 src/http/modules/ngx_http_image_filter_module.c static char *ngx_http_image_filter_sharpen(ngx_conf_t *cf, ngx_command_t *cmd, ngx_http_image_filter_sharpen 135 src/http/modules/ngx_http_image_filter_module.c ngx_http_image_filter_sharpen,