onvif 开发之video streamer---onvif实现功能和经验
目錄(?)[-]
有了前幾篇的基礎，現在可以正式開始onvif的實現工作，其中一項非常重要的部分就是視頻流的對接，即能夠在符合onvif標準的監控客戶端軟件里接收到設備端NVT發來的RTSP視頻流。這里，我所用的客戶端軟件是Onvif Device Manager v2.2。【來自http://blog.csdn.net/ghostyu】
ONVIF?Profile S Specification文檔描述了Device或者說DVT和Client可以使用的一種Profile，Profile這個詞在計算機領域非常常見，我們可以理解成一種方案、配置、框架等。
文檔里描述了如果實現VideoStream，device和client應該具備的條件，當然如果實現文檔的所有條件，就可以說該設備符合Profile S
如果單純實現VideoStream，只需完成下列命令。
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1、GetProfiles
2、GetStreamUri
填充rtsp路徑，例如：rtsp://192.168.1.201/petrov.m4e
3、Media Streaming using RTSP
這里使用開源的live555，完成rtsp功能
4、GetVideoEncoderConfiguration
5、GetVideoEncoderConfigurationOptions
6、GetCapabilities
NVC為了獲取DVT所支持的功能的命令
參考文檔：
1、ONVIF Profile S Specification
描述ProfileS是什么樣的一個東西，如何實現
2、Reference_of_ONVIF_Development_v1.01.02
Onvif DVT設計參考，指明了一條道路，但沒有具體內容
3、ONVIF-Media-Service-Spec-v220
Onvif Media的說明介紹
4、http://www.onvif.org/onvif/ver20/util/operationIndex.html
onvif幾乎全部命令的詳細說明，非常重要。該文檔告訴我們結構體成員的意義和如何填充。Onvif開發其實就是各種結構體的填充。
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一、產生onvif源碼框架
1、從wsdl生成C頭文件
wsdl2h -o onvif.h -c -s -t .\typemap.dat http://www.onvif.org/onvif/ver10/device/wsdl/devicemgmt.wsdl http://www.onvif.org/onvif/ver10/event/wsdl/event.wsdl http://www.onvif.org/onvif/ver10/display.wsdl http://www.onvif.org/onvif/ver10/deviceio.wsdl http://www.onvif.org/onvif/ver20/imaging/wsdl/imaging.wsdl http://www.onvif.org/onvif/ver10/media/wsdl/media.wsdl http://www.onvif.org/onvif/ver20/ptz/wsdl/ptz.wsdl http://www.onvif.org/onvif/ver10/receiver.wsdl http://www.onvif.org/onvif/ver10/recording.wsdl http://www.onvif.org/onvif/ver10/search.wsdl http://www.onvif.org/onvif/ver10/network/wsdl/remotediscovery.wsdl http://www.onvif.org/onvif/ver10/replay.wsdl http://www.onvif.org/onvif/ver20/analytics/wsdl/analytics.wsdl http://www.onvif.org/onvif/ver10/analyticsdevice.wsdl http://www.onvif.org/onvif/ver10/schema/onvif.xsd http://www.onvif.org/ver10/actionengine.wsdl
跟前一篇discovery唯一不同的是，這里多了很多wsdl文件，這次創建完整的onvif代碼框架
2、從頭文件生成源碼框架
soapcpp2 -c onvif.h -x -I /root/onvif/gsoap-2.8/gsoap/import -I /root/onvif/gsoap-2.8/gsoap/
產生的C文件比較龐大，最大的有十幾兆，大部分的內容沒有復用導致。
二、創建soap運行環境
int main(int argc, char **argv)
{
int m, s;
struct soap add_soap;
int server_udp;
server_udp = create_server_socket_udp();
//bind_server_udp1(server_udp);
pthread_t thrHello;
pthread_t thrProbe;
//pthread_create(&thrHello,NULL,main_Hello,server_udp);
//sleep(2);
pthread_create(&thrProbe,NULL,main_Probe,server_udp);
soap_init(&add_soap);
soap_set_namespaces(&add_soap, namespaces);
if (argc < 0) {
printf("usage: %s <server_port> \n", argv[0]);
exit(1);
} else {
m = soap_bind(&add_soap, NULL, 80, 100);
if (m < 0) {
soap_print_fault(&add_soap, stderr);
exit(-1);
}
fprintf(stderr, "Socket connection successful: master socket = %d\n", m);
for (;;) {
s = soap_accept(&add_soap);
if (s < 0) {
soap_print_fault(&add_soap, stderr);
exit(-1);
}
fprintf(stderr, "Socket connection successful: slave socket = %d\n", s);
soap_serve(&add_soap);
soap_end(&add_soap);
}
}
return 0;
}
注意，這里綁定了80端口，onvif使用的是http請求，然后附帶xml，其實正常的是將onvif集成到web服務器中，普通的http請求有web服務器處理，onvif的http請求則有soap處理。我們這里的做法也可行，只不過onvif的訪問web服務器的功能是無法使用的。
三、RTSP視頻對接
1、實現GetCapabilities命令
客戶端發送GetCapabilities命令來得到設備端的能力，然后依據GetCapabilities返回的結果再來進行下一步操作
在__tds__GetCapabilities函數中我們只需要填充Media部分和一些必要的即可
//想要對接RTSP視頻，必須設置Media
tds__GetCapabilitiesResponse->Capabilities->Media = (struct tt__MediaCapabilities*)soap_malloc(soap, sizeof(struct tt__MediaCapabilities));
tds__GetCapabilitiesResponse->Capabilities->Media->XAddr = (char *) soap_malloc(soap, sizeof(char) * LARGE_INFO_LENGTH);
strcpy(tds__GetCapabilitiesResponse->Capabilities->Media->XAddr, _IPv4Address);
tds__GetCapabilitiesResponse->Capabilities->Media->StreamingCapabilities = (struct tt__RealTimeStreamingCapabilities*)soap_malloc(soap, sizeof(struct tt__RealTimeStreamingCapabilities));
tds__GetCapabilitiesResponse->Capabilities->Media->StreamingCapabilities->RTPMulticast = (int *)soap_malloc(soap, sizeof(int));
*tds__GetCapabilitiesResponse->Capabilities->Media->StreamingCapabilities->RTPMulticast = _false;
tds__GetCapabilitiesResponse->Capabilities->Media->StreamingCapabilities->RTP_USCORETCP = (int *)soap_malloc(soap, sizeof(int));
*tds__GetCapabilitiesResponse->Capabilities->Media->StreamingCapabilities->RTP_USCORETCP = _true;
tds__GetCapabilitiesResponse->Capabilities->Media->StreamingCapabilities->RTP_USCORERTSP_USCORETCP = (int *)soap_malloc(soap, sizeof(int));
*tds__GetCapabilitiesResponse->Capabilities->Media->StreamingCapabilities->RTP_USCORERTSP_USCORETCP = _true;
tds__GetCapabilitiesResponse->Capabilities->Media->StreamingCapabilities->Extension = NULL;
tds__GetCapabilitiesResponse->Capabilities->Media->Extension = NULL;
tds__GetCapabilitiesResponse->Capabilities->Media->__size = 0;
tds__GetCapabilitiesResponse->Capabilities->Media->__any = 0;
另外必要填充的還有
//下面的重要，這里只實現視頻流，需要設置VideoSources
tds__GetCapabilitiesResponse->Capabilities->Extension->DeviceIO->VideoSources = TRUE;
tds__GetCapabilitiesResponse->Capabilities->Extension->DeviceIO->VideoOutputs = FALSE;
tds__GetCapabilitiesResponse->Capabilities->Extension->DeviceIO->AudioSources = FALSE;
tds__GetCapabilitiesResponse->Capabilities->Extension->DeviceIO->AudioOutputs = FALSE;
tds__GetCapabilitiesResponse->Capabilities->Extension->DeviceIO->RelayOutputs = FALSE;
tds__GetCapabilitiesResponse->Capabilities->Extension->DeviceIO->__size = 0;
tds__GetCapabilitiesResponse->Capabilities->Extension->DeviceIO->__any = NULL;
tds__GetCapabilitiesResponse->Capabilities->Extension->Display = NULL;
tds__GetCapabilitiesResponse->Capabilities->Extension->Recording = NULL;
tds__GetCapabilitiesResponse->Capabilities->Extension->Search = NULL;
tds__GetCapabilitiesResponse->Capabilities->Extension->Replay = NULL;
tds__GetCapabilitiesResponse->Capabilities->Extension->Receiver = NULL;
tds__GetCapabilitiesResponse->Capabilities->Extension->AnalyticsDevice = NULL;
tds__GetCapabilitiesResponse->Capabilities->Extension->Extensions = NULL;
tds__GetCapabilitiesResponse->Capabilities->Extension->__size = 0;
tds__GetCapabilitiesResponse->Capabilities->Extension->__any = NULL;
2、實現GetServices命令
int __tds__GetServices(struct soap* soap, struct _tds__GetServices *tds__GetServices, struct _tds__GetServicesResponse *tds__GetServicesResponse)
{
DBG("__tds__GetServices\n");
/*該函數很必要*/
char _IPAddr[INFO_LENGTH];
int i = 0;
sprintf(_IPAddr, "http://%03d.%03d.%03d.%03d/onvif/services", 192, 168, 1, 233);
tds__GetServicesResponse->__sizeService = 1;
tds__GetServicesResponse->Service = (struct tds__Service *)soap_malloc(soap, sizeof(struct tds__Service));
tds__GetServicesResponse->Service[0].XAddr = (char *)soap_malloc(soap, sizeof(char) * INFO_LENGTH);
tds__GetServicesResponse->Service[0].Namespace = (char *)soap_malloc(soap, sizeof(char) * INFO_LENGTH);
strcpy(tds__GetServicesResponse->Service[0].Namespace, "http://www.onvif.org/ver10/events/wsdl");
strcpy(tds__GetServicesResponse[0].Service->XAddr, _IPAddr);
tds__GetServicesResponse->Service[0].Capabilities = NULL;
tds__GetServicesResponse->Service[0].Version = (struct tt__OnvifVersion *)soap_malloc(soap, sizeof(struct tt__OnvifVersion));
tds__GetServicesResponse->Service[0].Version->Major = 0;
tds__GetServicesResponse->Service[0].Version->Minor = 3;
tds__GetServicesResponse->Service[0].__any = (char **)soap_malloc(soap, sizeof(char *));
tds__GetServicesResponse->Service[0].__any[0] = (char *)soap_malloc(soap, sizeof(char) * INFO_LENGTH);
strcpy(tds__GetServicesResponse->Service[0].__any[0],"why1");
tds__GetServicesResponse->Service[0].__any[1] = (char *)soap_malloc(soap,sizeof(char) * INFO_LENGTH);
strcpy(tds__GetServicesResponse->Service[0].__any[1],"why2");
tds__GetServicesResponse->Service[0].__size = NULL;
tds__GetServicesResponse->Service[0].__anyAttribute = NULL;
return SOAP_OK;
}
3、實現GetVideoSources命令
int __tmd__GetVideoSources(struct soap* soap, struct _trt__GetVideoSources *trt__GetVideoSources, struct _trt__GetVideoSourcesResponse *trt__GetVideoSourcesResponse)
{
DBG("__tmd__GetVideoSources\n");
int size1;
size1 = 1;
trt__GetVideoSourcesResponse->__sizeVideoSources = size1;
trt__GetVideoSourcesResponse->VideoSources = (struct tt__VideoSource *)soap_malloc(soap, sizeof(struct tt__VideoSource) * size1);
trt__GetVideoSourcesResponse->VideoSources[0].Framerate = 30;
trt__GetVideoSourcesResponse->VideoSources[0].Resolution = (struct tt__VideoResolution *)soap_malloc(soap, sizeof(struct tt__VideoResolution));
trt__GetVideoSourcesResponse->VideoSources[0].Resolution->Height = 720;
trt__GetVideoSourcesResponse->VideoSources[0].Resolution->Width = 1280;
trt__GetVideoSourcesResponse->VideoSources[0].token = (char *)soap_malloc(soap, sizeof(char)*INFO_LENGTH);
strcpy(trt__GetVideoSourcesResponse->VideoSources[0].token,"GhostyuSource_token"); //注意這里需要和GetProfile中的sourcetoken相同
trt__GetVideoSourcesResponse->VideoSources[0].Imaging =(struct tt__ImagingSettings*)soap_malloc(soap, sizeof(struct tt__ImagingSettings));
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->Brightness = (float*)soap_malloc(soap,sizeof(float));
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->Brightness[0] = 128;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->ColorSaturation = (float*)soap_malloc(soap,sizeof(float));
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->ColorSaturation[0] = 128;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->Contrast = (float*)soap_malloc(soap,sizeof(float));
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->Contrast[0] = 128;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->IrCutFilter = (int *)soap_malloc(soap,sizeof(int));
*trt__GetVideoSourcesResponse->VideoSources[0].Imaging->IrCutFilter = 0;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->Sharpness = (float*)soap_malloc(soap,sizeof(float));
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->Sharpness[0] = 128;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->BacklightCompensation = (struct tt__BacklightCompensation*)soap_malloc(soap, sizeof(struct tt__BacklightCompensation));
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->BacklightCompensation->Mode = 0;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->BacklightCompensation->Level = 20;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->Exposure = NULL;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->Focus = NULL;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->WideDynamicRange = (struct tt__WideDynamicRange*)soap_malloc(soap, sizeof(struct tt__WideDynamicRange));
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->WideDynamicRange->Mode = 0;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->WideDynamicRange->Level = 20;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->WhiteBalance = (struct tt__WhiteBalance*)soap_malloc(soap, sizeof(struct tt__WhiteBalance));
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->WhiteBalance->Mode = 0;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->WhiteBalance->CrGain = 0;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->WhiteBalance->CbGain = 0;
trt__GetVideoSourcesResponse->VideoSources[0].Imaging->Extension = NULL;
trt__GetVideoSourcesResponse->VideoSources[0].Extension = NULL;
return SOAP_OK;
}
__tmd__GetVideoSources最重要的是token的填充，必須要和下面profile中的sourcetoken相同，需要匹配到這個視頻源
4、實現GetProfiles命令
size = 1;
trt__GetProfilesResponse->Profiles =(struct tt__Profile *)soap_malloc(soap, sizeof(struct tt__Profile) * size);
trt__GetProfilesResponse->__sizeProfiles = size;
i=0;
trt__GetProfilesResponse->Profiles[i].Name = (char *)soap_malloc(soap,sizeof(char)*MAX_PROF_TOKEN);
strcpy(trt__GetProfilesResponse->Profiles[i].Name,"my_profile");
trt__GetProfilesResponse->Profiles[i].token= (char *)soap_malloc(soap,sizeof(char)*MAX_PROF_TOKEN);
strcpy(trt__GetProfilesResponse->Profiles[i].token,"token_profile");
trt__GetProfilesResponse->Profiles[i].fixed = _false;
trt__GetProfilesResponse->Profiles[i].__anyAttribute = NULL;
除了上面的基本信息，還需要填充兩大項：VideoSourceConfiguration和VideoEncoderConfiguration，一個用于描述視頻源的信息，另外一個描述視頻的編碼信息
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先給VideoSourceConfiguration分配空間
trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration = (struct tt__VideoSourceConfiguration *)soap_malloc(soap,sizeof(struct tt__VideoSourceConfiguration ));
trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->Name = (char *)soap_malloc(soap,sizeof(char)*MAX_PROF_TOKEN);
trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->token = (char *)soap_malloc(soap,sizeof(char)*MAX_PROF_TOKEN);
trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->SourceToken = (char *)soap_malloc(soap,sizeof(char)*MAX_PROF_TOKEN);
trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->Bounds = (struct tt__IntRectangle *)soap_malloc(soap,sizeof(struct tt__IntRectangle));
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然后在填充它
/*注意SourceToken*/
strcpy(trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->Name,"VS_Name");
strcpy(trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->token,"VS_Token");
strcpy(trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->SourceToken,"GhostyuSource_token"); /*必須與__tmd__GetVideoSources中的token相同*/
trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->UseCount = 1;
trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->Bounds->x = 1;
trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->Bounds->y = 1;
trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->Bounds->height = 720;
trt__GetProfilesResponse->Profiles[i].VideoSourceConfiguration->Bounds->width = 1280;
如果是指針必須先用soap_malloc分配內存，然后才能賦值
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下面是VideoEncoderConfiguration
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration = (struct tt__VideoEncoderConfiguration *)soap_malloc(soap,sizeof(struct tt__VideoEncoderConfiguration));
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->Name = (char *)soap_malloc(soap,sizeof(char)*MAX_PROF_TOKEN);
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->token= (char *)soap_malloc(soap,sizeof(char)*MAX_PROF_TOKEN);
strcpy(trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->Name,"VE_Name1");
strcpy(trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->token,"VE_token1");
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->UseCount = 1;
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->Quality = 10;
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->Encoding = 1;//JPEG = 0, MPEG4 = 1, H264 = 2;
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->Resolution = (struct tt__VideoResolution *)soap_malloc(soap, sizeof(struct tt__VideoResolution));
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->Resolution->Height = 720;
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->Resolution->Width = 1280;
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->RateControl = (struct tt__VideoRateControl *)soap_malloc(soap, sizeof(struct tt__VideoRateControl));
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->RateControl->FrameRateLimit = 30;
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->RateControl->EncodingInterval = 1;
trt__GetProfilesResponse->Profiles[i].VideoEncoderConfiguration->RateControl->BitrateLimit = 500;
5、GetVideoSourceConfiguration和GetVideoEncoderConfiguration
int __trt__GetVideoSourceConfiguration(struct soap* soap, struct _trt__GetVideoSourceConfiguration *trt__GetVideoSourceConfiguration, struct _trt__GetVideoSourceConfigurationResponse *trt__GetVideoSourceConfigurationResponse)
{
DBG("__trt__GetVideoSourceConfiguration\n");
//該函數必要，live video需要
return SOAP_OK;
}
int __trt__GetVideoEncoderConfiguration(struct soap* soap, struct _trt__GetVideoEncoderConfiguration *trt__GetVideoEncoderConfiguration, struct _trt__GetVideoEncoderConfigurationResponse *trt__GetVideoEncoderConfigurationResponse)
{
DBG("__trt__GetVideoEncoderConfiguration\n");
return SOAP_OK;
}
6、GetVideoEncoderConfigurationOptions
int __trt__GetVideoEncoderConfigurationOptions(struct soap* soap, struct _trt__GetVideoEncoderConfigurationOptions *trt__GetVideoEncoderConfigurationOptions, struct _trt__GetVideoEncoderConfigurationOptionsResponse *trt__GetVideoEncoderConfigurationOptionsResponse)
{
DBG("__trt__GetVideoEncoderConfigurationOptions\n");
//該函數必要，video streaming需要
return SOAP_OK;
}
以上5、6不分的代碼直接返回SOAP_OK即可，正常來說是應該填充的，這里不影響RTSP Video Stream，暫時就不去動它
四、運行live555MediaServer服務器
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live555官網有很多測試文件，我這里用的是MPEG4的測試文件路勁為rtsp://192.168.1.201/petrov.m4e
五、啟動Onvif Device Manager測試
有一個問題，OnvifDeviceManager的并不能自動發現設備（OnvifTestTool可以），還好它提供了手動添加功能
單擊add，添加如下內容：http://192.168.1.233/onvif/device_service
注意，我在程序中固定了兩個IP：linux192.168.1.233，windows：192.168.1.201，這里需看情況修改
測試截圖：
1、Live video
2、Video streaming
3、Profiles
最后是運行的live555 rtsp服務器
終端打印的DEBUG信息
源代碼下載地址：http://download.csdn.net/detail/ghostyu/4796093
http://blog.csdn.net/ghostyu/article/details/8208428
http://blog.chinaunix.net/uid-23381466-id-3799058.html
總結
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