C++ (Cpp) gp_port_get_timeout示例

示例#1

文件： ultrapocket.c 项目： AleksKolkov/libgphoto2

static int
ultrapocket_skip(GPPort *port, int npackets)
{
   int old_timeout = 200;
   unsigned char retbuf[0x1000];

   gp_port_get_timeout(port, &old_timeout);
   gp_port_set_timeout(port, 100);
   for (; (npackets > 0) && gp_port_read(port, (char *)retbuf, 0x1000); npackets--);
   gp_port_set_timeout(port, old_timeout);
   return GP_OK;
}

示例#2

文件： usb.c 项目： mejedi/Gphoto2.framework

static inline uint16_t
ptp_usb_event (PTPParams* params, PTPContainer* event, int wait)
{
	int			result, timeout, fasttimeout;
	unsigned long		rlen;
	PTPUSBEventContainer	usbevent;
	Camera			*camera = ((PTPData *)params->data)->camera;

	if (params->deviceinfo.VendorExtensionID == PTP_VENDOR_CANON)
		fasttimeout = PTP2_FAST_TIMEOUT*2;
	else
		fasttimeout = PTP2_FAST_TIMEOUT;

	PTP_CNT_INIT(usbevent);

	if (event==NULL)
		return PTP_ERROR_BADPARAM;

	switch(wait) {
	case PTP_EVENT_CHECK:
		result = gp_port_check_int (camera->port, (char*)&usbevent, sizeof(usbevent));
		if (result <= 0) result = gp_port_check_int (camera->port, (char*)&usbevent, sizeof(usbevent));
		break;
	case PTP_EVENT_CHECK_FAST:
		gp_port_get_timeout (camera->port, &timeout);
		gp_port_set_timeout (camera->port, fasttimeout);
		result = gp_port_check_int (camera->port, (char*)&usbevent, sizeof(usbevent));
		if (result <= 0) result = gp_port_check_int (camera->port, (char*)&usbevent, sizeof(usbevent));
		gp_port_set_timeout (camera->port, timeout);
		break;
	default:
		return PTP_ERROR_BADPARAM;
	}
	if (result < 0) {
		gp_log (GP_LOG_DEBUG, "ptp2/usb_event", "reading event an error %d occurred", result);
		if (result == GP_ERROR_TIMEOUT)
			return PTP_ERROR_TIMEOUT;
		return PTP_ERROR_IO;
	}
	if (result == 0) {
		gp_log (GP_LOG_DEBUG, "ptp2/usb_event", "reading event an 0 read occurred, assuming timeout.");
		return PTP_ERROR_TIMEOUT;
	}
	rlen = result;
	if (rlen < 8) {
		gp_log (GP_LOG_ERROR, "ptp2/usb_event",
			"reading event an short read of %ld bytes occurred", rlen);
		return PTP_ERROR_IO;
	}

	/* Only do the additional reads for "events". Canon IXUS 2 likes to
	 * send unrelated data.
	 */
	if (	(dtoh16(usbevent.type) == PTP_USB_CONTAINER_EVENT) &&
		(dtoh32(usbevent.length) > rlen)
	) {
		gp_log (GP_LOG_DEBUG, "ptp2/usb_event","Canon incremental read (done: %ld, todo: %d)", rlen, dtoh32(usbevent.length));
		gp_port_get_timeout (camera->port, &timeout);
		gp_port_set_timeout (camera->port, PTP2_FAST_TIMEOUT);
		while (dtoh32(usbevent.length) > rlen) {
			result = gp_port_check_int (camera->port, ((char*)&usbevent)+rlen, sizeof(usbevent)-rlen);
			if (result <= 0)
				break;
			rlen += result;
		}
		gp_port_set_timeout (camera->port, timeout);
	}
	/* if we read anything over interrupt endpoint it must be an event */
	/* build an appropriate PTPContainer */
	event->Nparam  = (rlen-12)/4;
	event->Code   = dtoh16(usbevent.code);
	event->SessionID=params->session_id;
	event->Transaction_ID=dtoh32(usbevent.trans_id);
	event->Param1 = dtoh32(usbevent.param1);
	event->Param2 = dtoh32(usbevent.param2);
	event->Param3 = dtoh32(usbevent.param3);
	return PTP_RC_OK;
}

示例#3

文件： gphoto2-port.c 项目： Dvizhenka/libgphoto2

int gp_port_timeout_get (GPPort *port, int *timeout)
{
	return (gp_port_get_timeout (port, timeout));
}