Snapshot delay

[baudev]

This is not really a bug but an annoying behavior.

When executing the request {IP}:{port}/{camid}/action/snapshot and the response is returned we expect the image to be saved in /var/lib/motioneye/Camera1/lastsnap.jpg.

However, there is a slight time lag... It is necessary to wait 500ms after the response to the request for the file to be updated.

Couldn't we just return the response to this request when the image has been updated? (Make the image recording synchronous and not asynchronous in other words).

motion/src/webu_text.c

Lines 522 to 542 in e855dbe

	static void webu_text_action_snapshot(struct webui_ctx *webui) {
	/* trigger a snapshot*/
	char response[WEBUI_LEN_RESP];
	webu_process_action(webui);
	webu_text_header(webui);
	webu_text_back(webui,"/action");
	snprintf(response,sizeof(response)
	,"Snapshot for camera %d %s\nDone%s\n"
	,webui->cnt->camera_id
	,webui->text_eol,webui->text_eol
	);
	webu_write(webui, response);
	webu_text_trailer(webui);
	}

Thanks again for this awesome project!