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文章目录前言1实现http连接2 获取设备编码参数3.设置摄像头相关参数总结
前言
因为工作上的原因，需要接入IPC摄像头，实现监控功能，因而开始了对于IPC摄像头的学习之路。因为要做到通用，所以目光直接锁定了onvif协议，因为这是一个通用的协议，各大摄像头厂家都适配于这个协议。在网上搜索后，发现有关onvif协议的实现大部分博主都是通过gsoap这个工具来实现的，但经过查看后，发现gsoap的框架在编译后生成的可执行文件动不动就是10几M，而我工作所用到的板子flash才16M，实际可用的也就12 13M，因而走这条路肯定是行不通了，于是开始研究其他方向，最终找到可以利用http协议实现onvif协议，因为onvif协议在与以IPC摄像头为服务器，自身终端为客户端，在两者进行通信时，使用的是http协议，只不过其命令比较复杂，不像gsoap工具已经集成好了，但为了节省内存空间，只能使用这种方式来实现一些控制。
1实现http连接
因为我实现监控功能的前提是能获得该IPC摄像头的IP地址，因而设备查找这一块就省略了（其实是比较简单的）。首先我们基于已经知道的IPC摄像头的ip地址来实现http连接，以下是连接时的关键函数：
int SendHttpCmdAndReceiveMessage(char*IpAdress,char*sndBuf,int sndLen,char*recvBuf,int recvLen)
{
int sock;
struct sockaddr_in remote;
if((sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))<0){
perror("Can't create TCP socket!\n");
}
bzero(&remote,sizeof(remote));
remote.sin_family = AF_INET;
if(inet_aton(IpAdress,&remote.sin_addr) == 0) //服务器的IP地址来自程序的参数
{
printf("Server IP Address Error!\n");
return 0;
}
remote.sin_port = htons(80);
int addr_len = sizeof(remote);
//向服务器发起连接,连接成功后client_socket代表了客户机和服务器的一个socket连接
if(connect(sock,(struct sockaddr*)&remote, addr_len) < 0)
{
printf("Can Not Connect To %s!\n",IpAdress);
return 0;
}
send(sock,sndBuf,sndLen,0);
usleep(500);
recvLen = recv(sock,recvBuf,recvLen,0);
close(sock);
return 1;
}该函数就实现了与IPC的http连接，IP地址是摄像头的地址，端口默认是80，并且该函数是发送与接收同步的。有这个基础，我们就能通过这个函数，发出一些指令，从而控制摄像头。
2 获取设备编码参数
在这里，我们需要获取摄像头的一些参数，因为我们最终是要将视频播放出来，因而我们要知道摄像头的分辨率，帧率等信息，下面是发送获取编码命令的相关代码片段：
/*获取设备编码*/
int ONVIF_IPC_GetVideoEnc_API()
{
int DataStrlen = 0;
int ReturnData = 0;
char cfgStr[2048] = { 0 };
//char * rcvData = (char *)malloc(RCV_BUFF_SIZE);
char rcvData[20480];
assert(rcvData);
DataStrlen = sprintf(cfgStr,"%s","POST /onvif/Media HTTP/1.1\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s", "Host: ",gHttpMessage.IPAdress,"\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s", "Content-Type: application/soap+xml; charset=utf-8\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%d%s", "Content-Length: ",289,"\r\n\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<?xml version=\"1.0\" encoding=\"utf-8\"?>");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s", "<s:Envelope xmlns:s=\"http://www.w3.org/2003/05/soap-envelope\"><s:Body xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"><GetProfiles xmlns=\"http://www.onvif.org/ver10/media/wsdl\"/></s:Body></s:Envelope>\r\n");
SendHttpCmdAndReceiveMessage(gHttpMessage.IPAdress,cfgStr,strlen(cfgStr),rcvData,RCV_BUFF_SIZE);
ReturnData = GetRealm(rcvData);
GetNonce(rcvData);
ProduceResponceHttp();
DataStrlen = 0;
DataStrlen = sprintf(cfgStr,"%s", "POST /onvif/Media HTTP/1.1\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s", "Host:",gHttpMessage.IPAdress,"\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s", "Content-Type: application/soap+xml; charset=utf-8\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\",","Authorization: Digest username=","admin");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," realm=",gHttpMessage.realm);
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," qop=","auth");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," algorithm=","MD5");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," uri=","/onvif/Media");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," nonce=",gHttpMessage.nonce);
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s"," nc=","00000001",",");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," cnonce=","9C6FD4D2CE6E99424E1DDD37312C0A24");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\"\r\n"," response=",gHttpMessage.responce);
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%d%s","Content-Length: ",289,"\r\n\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<?xml version=\"1.0\" encoding=\"utf-8\"?>");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s", "<s:Envelope xmlns:s=\"http://www.w3.org/2003/05/soap-envelope\"><s:Body xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"><GetProfiles xmlns=\"http://www.onvif.org/ver10/media/wsdl\"/></s:Body></s:Envelope>\r\n");
SendHttpCmdAndReceiveMessage(gHttpMessage.IPAdress,cfgStr,strlen(cfgStr),rcvData,RCV_BUFF_SIZE);
printf("The rcv data =%s\r\n",rcvData);
GetResolution(rcvData);
GetToken(rcvData);
GetVideoCoderName(rcvData);
GetTtlAndUserConutAndPort(rcvData);
GetH264ProfileAndSessionTimeout(rcvData);
GetVideoCoderToken(rcvData);
// if(rcvData != NULL)
// {
// free(rcvData);
// }
printf("This is test 2\r\n");
return 0;
}在这里就可以看出，用http协议的不方便了，因为我们需要发送非常多的东西，而且摄像头需要鉴权，也就等同于我们在网页上登录。因为用的是摘要认证方式，所以同样的命令我们要发送两次，第二次才能获得摄像头真正的设备信息。并且我们得到的消息也是一堆复杂的xml文本内容，还需要在这里面去获得我们想要的东西。
HTTP/1.1 200 OK
Date: Thu, 28 Jul 2022 17:54:42 GMT
Server: webserver
X-Frame-Options: SAMEORIGIN
Content-Length: 3319
Connection: close
Content-Type: application/soap+xml; charset=utf-8
<?xml version="1.0" encoding="UTF-8"?>
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope" xmlns:soapenc="http://www.w3.org/2003/05/soap-encoding" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:tt="http://www.onvif.org/ver10/schema" xmlns:tds="http://www.onvif.org/ver10/device/wsdl" xmlns:trt="http://www.onvif.org/ver10/media/wsdl" xmlns:timg="http://www.onvif.org/ver20/imaging/wsdl" xmlns:tev="http://www.onvif.org/ver10/events/wsdl" xmlns:tptz="http://www.onvif.org/ver20/ptz/wsdl" xmlns:tan="http://www.onvif.org/ver20/analytics/wsdl" xmlns:tst="http://www.onvif.org/ver10/storage/wsdl" xmlns:ter="http://www.onvif.org/ver10/error" xmlns:dn="http://www.onvif.org/ver10/network/wsdl" xmlns:tns1="http://www.onvif.org/ver10/topics" xmlns:tmd="http://www.onvif.org/ver10/deviceIO/wsdl" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl" xmlns:wsoap12="http://schemas.xmlsoap.org/wsdl/soap12" xmlns:http="http://schemas.xmlsoap.org/wsdl/http" xmlns:d="http://schemas.xmlsoap.org/ws/2005/04/discovery" xmlns:wsadis="http://schemas.xmlsoap.org/ws/2004/08/addressing" xmlns:wsnt="http://docs.oasis-open.org/wsn/b-2" xmlns:wsa="http://www.w3.org/2005/08/addressing" xmlns:wstop="http://docs.oasis-open.org/wsn/t-1" xmlns:wsrf-bf="http://docs.oasis-open.org/wsrf/bf-2" xmlns:wsntw="http://docs.oasis-open.org/wsn/bw-2" xmlns:wsrf-rw="http://docs.oasis-open.org/wsrf/rw-2" xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl" xmlns:wsrf-r="http://docs.oasis-open.org/wsrf/r-2" xmlns:trc="http://www.onvif.org/ver10/recording/wsdl" xmlns:tse="http://www.onvif.org/ver10/search/wsdl" xmlns:trp="http://www.onvif.org/ver10/replay/wsdl" xmlns:tnshik="http://www.hikvision.com/2011/event/topics" xmlns:hikwsd="http://www.onvifext.com/onvif/ext/ver10/wsdl" xmlns:hikxsd="http://www.onvifext.com/onvif/ext/ver10/schema" xmlns:tas="http://www.onvif.org/ver10/advancedsecurity/wsdl"><env:Body><trt:GetVideoEncoderConfigurationOptionsResponse><trt:Options><tt:QualityRange><tt:Min>0</tt:Min>
<tt:Max>5</tt:Max>
</tt:QualityRange>
<tt:H264><tt:ResolutionsAvailable><tt:Width>1280</tt:Width>
<tt:Height>720</tt:Height>
</tt:ResolutionsAvailable>
<tt:GovLengthRange><tt:Min>1</tt:Min>
<tt:Max>400</tt:Max>
</tt:GovLengthRange>
<tt:FrameRateRange><tt:Min>1</tt:Min>
<tt:Max>25</tt:Max>
</tt:FrameRateRange>
<tt:EncodingIntervalRange><tt:Min>1</tt:Min>
<tt:Max>1</tt:Max>
</tt:EncodingIntervalRange>
<tt:H264ProfilesSupported>Baseline</tt:H264ProfilesSupported>
<tt:H264ProfilesSupported>Main</tt:H264ProfilesSupported>
</tt:H264>
<tt:Extension><tt:H264><tt:ResolutionsAvailable><tt:Width>1280</tt:Width>
<tt:Height>720</tt:Height>
</tt:ResolutionsAvailable>
<tt:GovLengthRange><tt:Min>1</tt:Min>
<tt:Max>400</tt:Max>
</tt:GovLengthRange>
<tt:FrameRateRange><tt:Min>1</tt:Min>
<tt:Max>25</tt:Max>
</tt:FrameRateRange>
<tt:EncodingIntervalRange><tt:Min>1</tt:Min>
<tt:Max>1</tt:Max>
</tt:EncodingIntervalRange>
<tt:H264ProfilesSupported>Baseline</tt:H264ProfilesSupported>
<tt:H264ProfilesSupported>Main</tt:H264ProfilesSupported>
<tt:BitrateRange><tt:Min>32</tt:Min>
<tt:Max>2048</tt:Max>
</tt:BitrateRange>
</tt:H264>
</tt:Extension>
</trt:Options>
</trt:GetVideoEncoderConfigurationOptionsResponse>
</env:Body>
</env:Envelope>上面就是我们得到的编码信息，通过字符串相关操作函数我们可以得到该摄像头的编码方式为h264，分辨率为1280x720，帧率为25帧。
3.设置摄像头相关参数
当我们能获得摄像头相关信息后，并不意味之就能实现显示了，有时候受解码器的限制，我们还需要去修改摄像头的参数，这样才能满足我们某个时刻的需求：
void ONVIF_IPC_SetVideoEnc_API()
{
int DataStrlen = 0;
char cfgStr[2048] = { 0 };
char * rcvData = (char *)malloc(RCV_BUFF_SIZE);
DataStrlen = 0;
DataStrlen = sprintf(cfgStr,"%s","POST /onvif/Media HTTP/1.1\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s", "Host: ",gHttpMessage.IPAdress,"\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s", "Content-Type: application/soap+xml; charset=utf-8\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%d%s", "Content-Length: ",1180,"\r\n\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<?xml version=\"1.0\" encoding=\"utf-8\"?>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<soap:Envelope xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\">\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<soap:Body xmlns:trt=\"http://www.onvif.org/ver10/media/wsdl\" xmlns:tt=\"http://www.onvif.org/ver10/schema\">\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<trt:SetVideoEncoderConfiguration>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\"%s","<trt:Configuration token=",gHttpMessage.VideoEncoderToken,">\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s","<tt:Name>",gHttpMessage.VideoEncoderName,"</tt:Name>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%d%s","<tt:UseCount>",gHttpMessage.UserConut,"</tt:UseCount>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Encoding>H264</tt:Encoding>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Resolution>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Width>1280</tt:Width>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Height>720</tt:Height>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</tt:Resolution>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Quality>2</tt:Quality>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:RateControl>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:FrameRateLimit>20</tt:FrameRateLimit>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:EncodingInterval>1</tt:EncodingInterval>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:BitrateLimit>1024</tt:BitrateLimit>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</tt:RateControl>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:H264>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:GovLength>30</tt:GovLength>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s","<tt:H264Profile>",gHttpMessage.H264Profile,"</tt:H264Profile>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s"," </tt:H264>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Multicast>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Address>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Type>IPv4</tt:Type>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:IPv4Address>0.0.0.0</tt:IPv4Address>\r\n");;
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</tt:Address>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%d%s","<tt:Port>",gHttpMessage.port,"</tt:Port>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%d%s","<tt:TTL>",gHttpMessage.TTL,"</tt:TTL>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:AutoStart>false</tt:AutoStart>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s"," </tt:Multicast>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s","<tt:SessionTimeout>",gHttpMessage.SessionTimeout,"</tt:SessionTimeout>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</trt:Configuration>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<trt:ForcePersistence>true</trt:ForcePersistence>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</trt:SetVideoEncoderConfiguration>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</soap:Body>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</soap:Envelope>\r\n");
//printf("The digest send data =%s\r\n",cfgStr);
SendHttpCmdAndReceiveMessage(gHttpMessage.IPAdress,cfgStr,strlen(cfgStr),rcvData,RCV_BUFF_SIZE);
//printf("The digest recv data =%s\r\n",rcvData);
GetRealm(rcvData);
GetNonce(rcvData);
ProduceResponceHttp();
DataStrlen = 0;
DataStrlen = sprintf(cfgStr,"%s", "POST /onvif/Media HTTP/1.1\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s", "Host:",gHttpMessage.IPAdress,"\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s", "Content-Type: application/soap+xml; charset=utf-8\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\",","Authorization: Digest username=","admin");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," realm=",gHttpMessage.realm);
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," qop=","auth");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," algorithm=","MD5");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," uri=","/onvif/Media");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," nonce=",gHttpMessage.nonce);
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s"," nc=","00000001",",");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\","," cnonce=","9C6FD4D2CE6E99424E1DDD37312C0A24");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\"\r\n"," response=",gHttpMessage.responce);
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%d%s", "Content-Length: ",1180,"\r\n\r\n");
printf("len1=%d\r\n",DataStrlen);
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<?xml version=\"1.0\" encoding=\"utf-8\"?>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<soap:Envelope xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\">\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<soap:Body xmlns:trt=\"http://www.onvif.org/ver10/media/wsdl\" xmlns:tt=\"http://www.onvif.org/ver10/schema\">\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<trt:SetVideoEncoderConfiguration>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s\"%s\"%s","<trt:Configuration token=",gHttpMessage.VideoEncoderToken,">\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s","<tt:Name>",gHttpMessage.VideoEncoderName,"</tt:Name>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%d%s","<tt:UseCount>",gHttpMessage.UserConut,"</tt:UseCount>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Encoding>H264</tt:Encoding>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Resolution>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Width>1280</tt:Width>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Height>720</tt:Height>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</tt:Resolution>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Quality>2</tt:Quality>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:RateControl>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:FrameRateLimit>15</tt:FrameRateLimit>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:EncodingInterval>1</tt:EncodingInterval>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:BitrateLimit>1024</tt:BitrateLimit>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</tt:RateControl>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:H264>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:GovLength>30</tt:GovLength>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s","<tt:H264Profile>",gHttpMessage.H264Profile,"</tt:H264Profile>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s"," </tt:H264>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Multicast>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Address>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:Type>IPv4</tt:Type>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:IPv4Address>0.0.0.0</tt:IPv4Address>\r\n");;
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</tt:Address>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%d%s","<tt:Port>",gHttpMessage.port,"</tt:Port>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%d%s","<tt:TTL>",gHttpMessage.TTL,"</tt:TTL>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<tt:AutoStart>false</tt:AutoStart>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s"," </tt:Multicast>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s%s%s","<tt:SessionTimeout>",gHttpMessage.SessionTimeout,"</tt:SessionTimeout>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</trt:Configuration>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","<trt:ForcePersistence>true</trt:ForcePersistence>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</trt:SetVideoEncoderConfiguration>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</soap:Body>\r\n");
DataStrlen += sprintf(cfgStr+DataStrlen,"%s","</soap:Envelope>\r\n");
//printf("len2=%d\r\n",DataStrlen);
//printf("The digest send data =%s\r\n",cfgStr);
SendHttpCmdAndReceiveMessage(gHttpMessage.IPAdress,cfgStr,strlen(cfgStr),rcvData,RCV_BUFF_SIZE);
//printf("The recv data =%s\r\n",rcvData);
free(rcvData);
}通过该函数我们能设置摄像头的参数。
总结
这期就写到这里了，后面再更新如何通过rtsp接收IPC摄像头的视频数据，将其写入文件，或者播放到屏幕上。
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
