cmake_minimum_required(VERSION 3.18)
set(PROJECT_NAME RTSPDecoder)
project(${PROJECT_NAME})

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

if(POLICY CMP0146)
    cmake_policy(SET CMP0146 OLD)
endif()

# 设置项目生成目录
set(EXECUTABLE_OUTPUT_PATH  ${CMAKE_CURRENT_SOURCE_DIR}/app/lib)

set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})

# 如果使用CUDA
option(USE_CUDA "Enable CUDA support" ON)
if(USE_CUDA)
    find_package(CUDA REQUIRED)
endif()

# 查找依赖库
find_package(OpenCV REQUIRED)
find_package(FFmpeg REQUIRED)


# 添加动态库
add_library(${PROJECT_NAME} SHARED
        RTSPDecoder.cpp
        RTSPDecoder.h
)

target_include_directories(${PROJECT_NAME} PRIVATE
        ${OpenCV_INCLUDE_DIRS}
        ${FFmpeg_INCLUDE_DIRS}
)

target_link_libraries(${PROJECT_NAME} PRIVATE
        ${OpenCV_LIBS}
#        ${FFmpeg_LIBRARIES}
        avutil avcodec avformat avdevice avfilter swscale swresample
)

if(USE_CUDA AND CUDA_FOUND)
    target_include_directories(${PROJECT_NAME} PRIVATE ${CUDA_INCLUDE_DIRS})
    target_link_libraries(${PROJECT_NAME} PRIVATE ${CUDA_LIBRARIES})
    target_compile_definitions(${PROJECT_NAME} PRIVATE USE_CUDA_ACCEL)
endif()

# 安装规则
install(TARGETS ${PROJECT_NAME}
        LIBRARY DESTINATION lib
        ARCHIVE DESTINATION lib
)

install(FILES RTSPDecoder.h
        DESTINATION include
)