st-2110-20 pipeline API MTL node in

CMakeLists.txt

@@ -76,6 +76,35 @@ FetchContent_MakeAvailable(json)
 # ── FFmpeg ──────────────────────────────────────────────────────────────────
 find_package(PkgConfig REQUIRED)
 
+# ── Media Transport Library (SMPTE ST 2110) ─────────────────────────────────
+# MTL is Meson-based, so consume an installed Meson build instead of adding the
+# source tree as a CMake subdirectory.
+set(MTL_SDK_DIR "" CACHE PATH "Path to installed Media Transport Library prefix")
+if(MTL_SDK_DIR)
+    find_library(MTL_LIBRARY
+        NAMES mtl
+        PATHS "${MTL_SDK_DIR}/lib" "${MTL_SDK_DIR}/lib64"
+        NO_DEFAULT_PATH
+        REQUIRED
+    )
+
+    add_library(mtl::mtl SHARED IMPORTED GLOBAL)
+    set_target_properties(mtl::mtl PROPERTIES
+        IMPORTED_LOCATION "${MTL_LIBRARY}"
+        INTERFACE_INCLUDE_DIRECTORIES "${MTL_SDK_DIR}/include"
+    )
+else()
+    pkg_check_modules(MTL IMPORTED_TARGET mtl)
+    if(MTL_FOUND)
+        add_library(mtl::mtl INTERFACE IMPORTED GLOBAL)
+        target_link_libraries(mtl::mtl INTERFACE PkgConfig::MTL)
+        target_include_directories(mtl::mtl INTERFACE ${MTL_INCLUDE_DIRS})
+        target_link_directories(mtl::mtl INTERFACE ${MTL_LIBRARY_DIRS})
+        target_compile_options(mtl::mtl INTERFACE ${MTL_CFLAGS_OTHER})
+        target_link_options(mtl::mtl INTERFACE ${MTL_LDFLAGS_OTHER})
+    endif()
+endif()
+
 # Check for FFmpeg components
 pkg_check_modules(FFMPEG REQUIRED IMPORTED_TARGET
     libavformat
@@ -112,6 +141,14 @@ if(DECKLINK_SDK_DIR)
     add_subdirectory(nodes/decklinkout)
 endif()
 
+# ── SMPTE-2110 (Media Transport Library) nodes ──────────────────────────────
+if(TARGET mtl::mtl)
+    add_subdirectory(nodes/st2110in)
+else()
+    message(STATUS "Media Transport Library not found; skipping SMPTE ST 2110 nodes")
+endif()
+
+
 add_subdirectory(nodes/videoin)
 add_subdirectory(nodes/pip)
 add_subdirectory(nodes/gaindb)