Changes between Version 2 and Version 3 of Docs/825gen2/Dev/Networking/IPCameras

Timestamp:

02/16/24 09:53:47 (9 months ago)

Author:

Don Wilson

Comment:

--

Docs/825gen2/Dev/Networking/IPCameras

@@ -8 +8 @@
 wget 10.1.3.25:/cgi-bin/viewer/video.jpg?resolution=640x480 -O /tmp/img.jpg
 }}}
+
+This could be performed from a system call in an app. A better approach is to use the curl library.
+
+{{{
+
+#include "cardinal825.h"
+#include <curl/curl.h>
+
+
+size_t write_data(void *ptr, size_t size, size_t nmemb, FILE *stream)
+{
+        size_t written = fwrite(ptr, size, nmemb, stream);
+        return written;
+}
+
+void CaptureImage(int tktNum, const char* code)
+{
+        char imgfilepath[120];
+        CURL *curl;
+        FILE *fp;
+        CURLcode res;
+
+        DEBUG_MSG("%s tktNum %d code [%s]\n", __FUNCTION__, tktNum, code);
+
+        curl = curl_easy_init();
+        if(curl) {
+                sprintf_s(imgfilepath, _imgfilefmt, tktNum, code);
+                fp = fopen(imgfilepath, "wb");
+                curl_easy_setopt(curl, CURLOPT_URL, /*CAMERA_SNAP_URL*/ _cameraSnapURL);
+                curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
+                curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);
+                res = curl_easy_perform(curl);
+                if(res != CURLE_OK) {
+                        DEBUG_MSG("curl_easy_perform error %d\n", res);
+                }
+
+                curl_easy_cleanup(curl);
+                fclose(fp);
+
+        } else {
+                DEBUG_MSG("curl_easy_init returned NULL\n");
+        }
+}
+
+}}}