Fix CXX version dependency and add licence details

modules/videoio/CMakeLists.txt

@@ -1,4 +1,3 @@
-set(CMAKE_CXX_STANDARD 17)
 set(VIDEOIO_ENABLE_PLUGINS_DEFAULT ON)
 if(EMSCRIPTEN OR IOS OR WINRT)
   set(VIDEOIO_ENABLE_PLUGINS_DEFAULT OFF)
@@ -141,6 +140,7 @@ if(TARGET ocv.3rdparty.v4l)
 endif()
 
 if(TARGET ocv.3rdparty.libcamera)
+  set(CMAKE_CXX_STANDARD 17)
   list(APPEND videoio_srcs ${CMAKE_CURRENT_LIST_DIR}/src/cap_libcamera.cpp)
   list(APPEND tgts ocv.3rdparty.libcamera)
 endif()

modules/videoio/src/cap_libcamera.cpp

@@ -1,3 +1,34 @@
+/*
+ *  cap_libcamera.cpp
+ *  For Video I/O
+ *  by Advait Dhamorikar on 27/08/23
+ *  advaitdhamorikar[at]gmail[dot]com
+ *  Copyright 2023. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
 #include "precomp.hpp"
 
 #include <iostream>
@@ -341,16 +372,6 @@ bool CvCapture_libcamera_proxy::retrieveFrame(int, OutputArray outputFrame)
     buf.copyTo(outputFrame);
 
     completedRequests_.pop();
-
-
-/*
-    V4L2 comments for reference
-    start = (unsigned char*)buffers[MAX_V4L_BUFFERS].memories[MEMORY_ORIG].start; 
-    frame.imageData = (char *)buffers[MAX_V4L_BUFFERS].memories[MEMORY_ORIG].start;
-    var stores the first value of the queue
-    Mat handling to be done here
-*/
-
     std::cout<<"Reusing buffer in processRequest"<<std::endl;
     nextProcessedRequest->reuse(Request::ReuseBuffers);
     std::cout<<"retrieveFrame Request Queued"<<std::endl;