feat: Implement subprocess streaming architecture for separated control/data planes

.gitignore

@@ -57,4 +57,7 @@ package-lock.json
 venv/
 
 # Generated files
-src_assets/common/assets/web/welcome.html
+src_assets/common/assets/web/welcome.html
+
+# CodeQL
+_codeql_detected_source_root

cmake/compile_definitions/common.cmake

@@ -130,6 +130,15 @@ set(SUNSHINE_TARGET_FILES
         "${CMAKE_SOURCE_DIR}/src/stat_trackers.cpp"
         "${CMAKE_SOURCE_DIR}/src/rswrapper.h"
         "${CMAKE_SOURCE_DIR}/src/rswrapper.c"
+        "${CMAKE_SOURCE_DIR}/src/subprocess/ipc_protocol.h"
+        "${CMAKE_SOURCE_DIR}/src/subprocess/ipc_pipe.h"
+        "${CMAKE_SOURCE_DIR}/src/subprocess/ipc_pipe.cpp"
+        "${CMAKE_SOURCE_DIR}/src/subprocess/subprocess_config.h"
+        "${CMAKE_SOURCE_DIR}/src/subprocess/subprocess_config.cpp"
+        "${CMAKE_SOURCE_DIR}/src/subprocess/subprocess_manager.h"
+        "${CMAKE_SOURCE_DIR}/src/subprocess/subprocess_manager.cpp"
+        "${CMAKE_SOURCE_DIR}/src/subprocess/subprocess.h"
+        "${CMAKE_SOURCE_DIR}/src/subprocess/subprocess.cpp"
         ${PLATFORM_TARGET_FILES})
 
 if(NOT SUNSHINE_ASSETS_DIR_DEF)

cmake/targets/linux.cmake

@@ -1 +1,4 @@
 # linux specific target definitions
+
+# Build subprocess sender executable
+add_subdirectory(src/sender)

cmake/targets/windows.cmake

@@ -1,5 +1,8 @@
 # windows specific target definitions
 set_target_properties(sunshine PROPERTIES LINK_SEARCH_START_STATIC 1)
+
+# Build subprocess sender executable
+add_subdirectory(src/sender)
 set(CMAKE_FIND_LIBRARY_SUFFIXES ".dll")
 find_library(ZLIB ZLIB1)
 list(APPEND SUNSHINE_EXTERNAL_LIBRARIES

src/sender/CMakeLists.txt

@@ -0,0 +1,41 @@
+# CMakeLists.txt for sunshine-sender subprocess
+# This builds the sender executable that handles the data plane
+
+set(SENDER_TARGET_FILES
+    "${CMAKE_SOURCE_DIR}/src/sender/sender_main.cpp"
+    "${CMAKE_SOURCE_DIR}/src/subprocess/ipc_pipe.cpp"
+    "${CMAKE_SOURCE_DIR}/src/subprocess/ipc_protocol.h"
+)
+
+add_executable(sunshine-sender ${SENDER_TARGET_FILES})
+
+target_include_directories(sunshine-sender PRIVATE
+    "${CMAKE_SOURCE_DIR}"
+)
+
+target_compile_definitions(sunshine-sender PRIVATE
+    SUBPROCESS_STANDALONE=1
+    $<$<PLATFORM_ID:Windows>:WIN32_LEAN_AND_MEAN>
+    $<$<PLATFORM_ID:Windows>:NOMINMAX>
+)
+
+set_target_properties(sunshine-sender PROPERTIES
+    CXX_STANDARD 23
+)
+
+# Platform-specific libraries
+if(WIN32)
+    target_link_libraries(sunshine-sender PRIVATE
+        ws2_32
+    )
+else()
+    target_link_libraries(sunshine-sender PRIVATE
+        pthread
+    )
+endif()
+
+# Install sender alongside main executable
+install(TARGETS sunshine-sender
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    COMPONENT Runtime
+)