merge back from libmtp for their async handling

1 files changed, 4 insertions, 0 deletions

diff --git a/camlibs/ptp2/ptp.h b/camlibs/ptp2/ptp.h
index f54d957b8..eda3e1b0d 100644
--- a/camlibs/ptp2/ptp.h
+++ b/camlibs/ptp2/ptp.h
@@ -2549,6 +2549,9 @@ struct _PTPParams {
 	uint16_t	response_packet_size;
 };
 
+/* Asynchronous event callback */
+typedef void (*PTPEventCbFn)(PTPParams *params, uint16_t code, PTPContainer *event, void *user_data);
+
 /* last, but not least - ptp functions */
 uint16_t ptp_usb_sendreq	(PTPParams* params, PTPContainer* req, int dataphase);
 uint16_t ptp_usb_senddata	(PTPParams* params, PTPContainer* ptp,
@@ -2556,6 +2559,7 @@ uint16_t ptp_usb_senddata	(PTPParams* params, PTPContainer* ptp,
 uint16_t ptp_usb_getresp	(PTPParams* params, PTPContainer* resp);
 uint16_t ptp_usb_getdata	(PTPParams* params, PTPContainer* ptp, 
 	                         PTPDataHandler *handler);
+uint16_t ptp_usb_event_async	(PTPParams *params, PTPEventCbFn cb, void *user_data);
 uint16_t ptp_usb_event_wait	(PTPParams* params, PTPContainer* event);
 uint16_t ptp_usb_event_check	(PTPParams* params, PTPContainer* event);
 uint16_t ptp_usb_event_check_queue	(PTPParams* params, PTPContainer* event);