Ich versuche, die HappyTime ONVIF-Bibliothek von Swift aufrufen.Calling Objective C und C von Swift Passing Callback-Funktion
Ich habe die Bibliothek in meinem Projekt verknüpft und ich bin in der Lage, einige einfache Funktionen aufzurufen, aber ich habe Probleme beim Abrufen der Syntax in meinem Anruf, die meine Callback-Funktion übergibt. Hier
ist der Swift Code:
func discoverCameras()
{
HappyInterface.sharedInstance().startProb()
//this line gives syntax error
HappyInterface.sharedInstance().setProbeCB(cameraDiscovered)
}
func cameraDiscovered(cameraFound:UnsafeMutablePointer<DEVICE_BINFO>)
{
table.reloadData()
}
mein setProbeCB
Anruf diesen Fehler gibt:
Cannot convert value of type '(UnsafeMutablePointer) ->()' to expected argument type 'UnsafeMutablePointer' (aka 'UnsafeMutablePointer, UnsafeMutablePointer<()>) ->()>>')
Hier ist die Obj C Umsetzung:
- (void) setProbeCB:(onvif_probe_cb *)cb {
set_probe_cb(*cb, 0);
}
Dies ist Obj C Überschrift:
- (void) setProbeCB:(onvif_probe_cb *)cb;
Dies ist der C-Header:
#ifndef __H_ONVIF_PROBE_H__
#define __H_ONVIF_PROBE_H__
#include "onvif.h"
typedef void (* onvif_probe_cb)(DEVICE_BINFO * p_res, void * pdata);
#ifdef __cplusplus
extern "C" {
#endif
ONVIF_API void set_probe_cb(onvif_probe_cb cb, void * pdata);
ONVIF_API void set_probe_interval(int interval);
ONVIF_API int start_probe(int interval);
ONVIF_API void stop_probe();
ONVIF_API void send_probe_req();
#ifdef __cplusplus
}
#endif
#endif // __H_ONVIF_PROBE_H__
Dies ist der Code C:
/***************************************************************************************/
#define MAX_PROBE_FD 8
/***************************************************************************************/
onvif_probe_cb g_probe_cb = 0;
void * g_probe_cb_data = 0;
pthread_t g_probe_thread = 0;
int g_probe_fd[MAX_PROBE_FD];
int g_probe_interval = 30;
BOOL g_probe_running = FALSE;
/***************************************************************************************/
int onvif_probe_init(unsigned int ip)
{
int opt = 1;
SOCKET fd;
struct sockaddr_in addr;
struct ip_mreq mcast;
fd = socket(AF_INET, SOCK_DGRAM, 0);
if(fd < 0)
{
log_print(LOG_ERR, "socket SOCK_DGRAM error!\n");
return -1;
}
addr.sin_family = AF_INET;
addr.sin_port = htons(3702);
addr.sin_addr.s_addr = ip;
if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) == -1)
{
// if port 3702 already occupied, only receive unicast message
addr.sin_port = 0;
if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) == -1)
{
closesocket(fd);
log_print(LOG_ERR, "bind error! %s\n", sys_os_get_socket_error());
return -1;
}
}
/* reuse socket addr */
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&opt, sizeof(opt)))
{
log_print(LOG_WARN, "setsockopt SO_REUSEADDR error!\n");
}
memset(&mcast, 0, sizeof(mcast));
mcast.imr_multiaddr.s_addr = inet_addr("239.255.255.250");
mcast.imr_interface.s_addr = ip;
if (setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char*)&mcast, sizeof(mcast)) < 0)
{
#if __WIN32_OS__
if(setsockopt(fd, IPPROTO_IP, 5, (char*)&mcast, sizeof(mcast)) < 0)
#endif
{
closesocket(fd);
log_print(LOG_ERR, "setsockopt IP_ADD_MEMBERSHIP error! %s\n", sys_os_get_socket_error());
return -1;
}
}
return fd;
}
char probe_req1[] =
"<?xml version=\"1.0\" encoding=\"utf-8\"?>"
"<Envelope xmlns:tds=\"http://www.onvif.org/ver10/device/wsdl\" xmlns=\"http://www.w3.org/2003/05/soap-envelope\">"
"<Header>"
"<wsa:MessageID xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">uuid:%s</wsa:MessageID>"
"<wsa:To xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">urn:schemas-xmlsoap-org:ws:2005:04:discovery</wsa:To>"
"<wsa:Action xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe</wsa:Action>"
"</Header>"
"<Body>"
"<Probe xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns=\"http://schemas.xmlsoap.org/ws/2005/04/discovery\">"
"<Types>tds:Device</Types>"
"<Scopes />"
"</Probe>"
"</Body>"
"</Envelope>";
char probe_req2[] =
"<?xml version=\"1.0\" encoding=\"utf-8\"?>"
"<Envelope xmlns:dn=\"http://www.onvif.org/ver10/network/wsdl\" xmlns=\"http://www.w3.org/2003/05/soap-envelope\">"
"<Header>"
"<wsa:MessageID xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">uuid:%s</wsa:MessageID>"
"<wsa:To xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">urn:schemas-xmlsoap-org:ws:2005:04:discovery</wsa:To>"
"<wsa:Action xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe</wsa:Action>"
"</Header>"
"<Body>"
"<Probe xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns=\"http://schemas.xmlsoap.org/ws/2005/04/discovery\">"
"<Types>dn:NetworkVideoTransmitter</Types>"
"<Scopes />"
"</Probe>"
"</Body>"
"</Envelope>";
int onvif_probe_req_tx(int fd)
{
int len;
int rlen;
char * p_bufs = NULL;
struct sockaddr_in addr;
int buflen = 10*1024;
p_bufs = (char *)malloc(buflen);
if (NULL == p_bufs)
{
return -1;
}
memset(p_bufs, 0, buflen);
sprintf(p_bufs, probe_req1, onvif_uuid_create());
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr("239.255.255.250");
addr.sin_port = htons(3702);
len = strlen(p_bufs);
rlen = sendto(fd, p_bufs, len, 0, (struct sockaddr *)&addr, sizeof(struct sockaddr_in));
if (rlen != len)
{
log_print(LOG_ERR, "onvif_probe_req_tx::rlen = %d,slen = %d\r\n", rlen, len);
}
usleep(1000);
memset(p_bufs, 0, buflen);
sprintf(p_bufs, probe_req2, onvif_uuid_create());
len = strlen(p_bufs);
rlen = sendto(fd, p_bufs, len, 0, (struct sockaddr *)&addr, sizeof(struct sockaddr_in));
if (rlen != len)
{
log_print(LOG_ERR, "onvif_probe_req_tx::rlen = %d,slen = %d\r\n", rlen, len);
}
free(p_bufs);
return rlen;
}
BOOL onvif_parse_device_binfo(XMLN * p_node, DEVICE_BINFO * p_res)
{
XMLN * p_EndpointReference;
XMLN * p_Types;
XMLN * p_XAddrs;
p_EndpointReference = xml_node_soap_get(p_node, "EndpointReference");
if (p_EndpointReference)
{
XMLN * p_Address = xml_node_soap_get(p_EndpointReference, "Address");
if (p_Address && p_Address->data)
{
strncpy(p_res->EndpointReference, p_Address->data, sizeof(p_res->EndpointReference)-1);
}
}
p_Types = xml_node_soap_get(p_node, "Types");
if (p_Types && p_Types->data)
{
p_res->type = parse_DeviceType(p_Types->data);
}
p_XAddrs = xml_node_soap_get(p_node, "XAddrs");
if (p_XAddrs && p_XAddrs->data)
{
parse_XAddr(p_XAddrs->data, &p_res->XAddr);
if (p_res->XAddr.host[0] == '\0' || p_res->XAddr.port == 0)
{
return FALSE;
}
}
else
{
return FALSE;
}
return TRUE;
}
BOOL onvif_probe_res(XMLN * p_node, DEVICE_BINFO * p_res)
{
XMLN * p_body = xml_node_soap_get(p_node, "Body");
if (p_body)
{
XMLN * p_ProbeMatches = xml_node_soap_get(p_body, "ProbeMatches");
if (p_ProbeMatches)
{
XMLN * p_ProbeMatch = xml_node_soap_get(p_ProbeMatches, "ProbeMatch");
while (p_ProbeMatch && soap_strcmp(p_ProbeMatch->name, "ProbeMatch") == 0)
{
if (onvif_parse_device_binfo(p_ProbeMatch, p_res))
{
if (g_probe_cb)
{
g_probe_cb(p_res, g_probe_cb_data);
}
}
p_ProbeMatch = p_ProbeMatch->next;
}
}
else
{
XMLN * p_Hello = xml_node_soap_get(p_body, "Hello");
if (p_Hello)
{
if (onvif_parse_device_binfo(p_Hello, p_res))
{
if (g_probe_cb)
{
g_probe_cb(p_res, g_probe_cb_data);
}
}
}
}
}
return TRUE;
}
int onvif_probe_net_rx()
{
int i;
int ret;
int maxfd = 0;
int fd = 0;
char rbuf[10*1024];
fd_set fdread;
struct timeval tv = {1, 0};
FD_ZERO(&fdread);
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0)
{
FD_SET(g_probe_fd[i], &fdread);
if (g_probe_fd[i] > maxfd)
{
maxfd = g_probe_fd[i];
}
}
}
ret = select(maxfd+1, &fdread, NULL, NULL, &tv);
if (ret == 0) // Time expired
{
return 0;
}
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0 && FD_ISSET(g_probe_fd[i], &fdread))
{
int rlen;
int addr_len;
struct sockaddr_in addr;
unsigned int src_ip;
unsigned int src_port;
XMLN * p_node;
fd = g_probe_fd[i];
addr_len = sizeof(struct sockaddr_in);
rlen = recvfrom(fd, rbuf, sizeof(rbuf), 0, (struct sockaddr *)&addr, (socklen_t*)&addr_len);
if (rlen <= 0)
{
log_print(LOG_ERR, "onvif_probe_net_rx::rlen = %d, fd = %d\r\n", rlen, fd);
continue;
}
src_ip = addr.sin_addr.s_addr;
src_port = addr.sin_port;
p_node = xxx_hxml_parse(rbuf, rlen);
if (p_node == NULL)
{
log_print(LOG_ERR, "onvif_probe_net_rx::hxml parse err!!!\r\n");
}
else
{
DEVICE_BINFO res;
memset(&res, 0, sizeof(DEVICE_BINFO));
onvif_probe_res(p_node, &res);
}
xml_node_del(p_node);
}
}
return 1;
}
void * onvif_probe_thread(void * argv)
{
int count = 0;
int i = 0;
int j = 0;
for (; i < get_if_nums() && j < MAX_PROBE_FD; i++, j++)
{
unsigned int ip = get_if_ip(i);
if (ip != 0 && ip != inet_addr("127.0.0.1"))
{
g_probe_fd[j] = onvif_probe_init(ip);
}
}
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0)
{
onvif_probe_req_tx(g_probe_fd[i]);
}
}
while (g_probe_running)
{
if (onvif_probe_net_rx() == 0)
{
count++;
}
if (count >= g_probe_interval)
{
count = 0;
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0)
{
onvif_probe_req_tx(g_probe_fd[i]);
}
}
}
usleep(1000);
}
g_probe_thread = 0;
return NULL;
}
ONVIF_API void set_probe_cb(onvif_probe_cb cb, void * pdata)
{
g_probe_cb = cb;
g_probe_cb_data = pdata;
}
ONVIF_API void send_probe_req()
{
int i;
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0)
{
onvif_probe_req_tx(g_probe_fd[i]);
}
}
}
ONVIF_API void set_probe_interval(int interval)
{
g_probe_interval = interval;
if (g_probe_interval < 10)
{
g_probe_interval = 30;
}
}
ONVIF_API int start_probe(int interval)
{
g_probe_running = TRUE;
set_probe_interval(interval);
g_probe_thread = sys_os_create_thread((void *)onvif_probe_thread, NULL);
if (g_probe_thread)
{
return 0;
}
return -1;
}
ONVIF_API void stop_probe()
{
int i;
g_probe_running = FALSE;
while (g_probe_thread)
{
usleep(1000);
}
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0)
{
closesocket(g_probe_fd[i]);
g_probe_fd[i] = 0;
}
}
}
Hier ist, was die DEVICE_BINFO
Struktur wie folgt aussieht:
typedef struct
{
int type; // device type
char EndpointReference[100];
onvif_XAddr XAddr; // xaddr, include port host, url
} DEVICE_BINFO;
Ich denke, die Essenz meines Problems ist, dass ich nicht weiß, wie man Objective C. eine Funktion von Swift passieren Ist das überhaupt möglich? Einfacheres Beispiel ohne Argumente. Swift Code: objectivecfunction (swiftfunction) func swiftfunction() { } – user3561494
Für diesen einfacheren Fall, legen Sie die folgenden in der Objective-C-Header: 'typedef void (* cb_t)(); void ocfunction (cb_t); 'In der Objective-C-Implementierung:' void ocfunction (cb_t cb) {cb(); } 'Stellen Sie sicher, dass der Obj C-Header in den Bridging-Header importiert wird. Dann in Swift: 'func swiftfunction() {print (" Hi from Swift callback! ")}; ocfunction (Schnellfunktion) ' – OmniProg