feat: camera via webrtc

deps/CMakeLists.txt

@@ -389,6 +389,8 @@ if(NOT OPENSSL_FOUND)
     set(OPENSSL_PKG dep_OpenSSL)
 endif()
 
+include(DataChannel/DataChannel.cmake)
+
 # we don't want to load a "wrong" openssl when loading curl
 # so, just don't even bother
 # ...i think this is how it works? change if wrong
@@ -461,6 +463,7 @@ set(_dep_list
     dep_wxInspector
     dep_FFMPEG
     dep_Assimp
+    dep_DataChannel
     )
 
 if (MSVC)

deps/DataChannel/DataChannel.cmake

@@ -0,0 +1,20 @@
+# libdatachannel is the native ICE/DTLS/SCTP/SRTP implementation used by the
+# GUI WebRTC camera controller. Keep the source revision fixed: the signaling
+# protocol is evolving independently of this transport dependency.
+orcaslicer_add_cmake_project(DataChannel
+    CMAKE_ARGS
+        -DNO_EXAMPLES=ON
+        -DNO_TESTS=ON
+        -DNO_WEBSOCKET=ON
+        -DNO_MEDIA=OFF
+        -DUSE_NICE=OFF
+        -DUSE_SYSTEM_SRTP=OFF
+        -DUSE_SYSTEM_JUICE=OFF
+        -DUSE_SYSTEM_USRSCTP=OFF
+        -DOPENSSL_ROOT_DIR:PATH=${DESTDIR}
+        -DOPENSSL_USE_STATIC_LIBS=ON
+    GIT_REPOSITORY https://github.com/paullouisageneau/libdatachannel.git
+    GIT_TAG v0.22.2
+    GIT_SHALLOW ON
+    GIT_SUBMODULES_RECURSE ON
+)