detect_ffmpeg.cmake
4.85 KB
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# --- FFMPEG ---
if(NOT HAVE_FFMPEG AND OPENCV_FFMPEG_USE_FIND_PACKAGE)
if(OPENCV_FFMPEG_USE_FIND_PACKAGE STREQUAL "1" OR OPENCV_FFMPEG_USE_FIND_PACKAGE STREQUAL "ON")
set(OPENCV_FFMPEG_USE_FIND_PACKAGE "FFMPEG")
endif()
find_package(${OPENCV_FFMPEG_USE_FIND_PACKAGE}) # Required components: AVCODEC AVFORMAT AVUTIL SWSCALE
if(FFMPEG_FOUND OR FFmpeg_FOUND)
set(HAVE_FFMPEG TRUE)
endif()
endif()
if(NOT HAVE_FFMPEG AND WIN32 AND NOT ARM AND NOT OPENCV_FFMPEG_SKIP_DOWNLOAD)
include("${OpenCV_SOURCE_DIR}/3rdparty/ffmpeg/ffmpeg.cmake")
download_win_ffmpeg(FFMPEG_CMAKE_SCRIPT)
if(FFMPEG_CMAKE_SCRIPT)
include("${FFMPEG_CMAKE_SCRIPT}")
set(HAVE_FFMPEG TRUE)
set(HAVE_FFMPEG_WRAPPER TRUE)
endif()
endif()
set(_required_ffmpeg_libraries libavcodec libavformat libavutil libswscale)
set(_used_ffmpeg_libraries ${_required_ffmpeg_libraries})
if(NOT HAVE_FFMPEG AND PKG_CONFIG_FOUND)
ocv_check_modules(FFMPEG libavcodec libavformat libavutil libswscale)
if(FFMPEG_FOUND)
ocv_check_modules(FFMPEG_libavresample libavresample) # optional
if(FFMPEG_libavresample_FOUND)
list(APPEND FFMPEG_LIBRARIES ${FFMPEG_libavresample_LIBRARIES})
list(APPEND _used_ffmpeg_libraries libavresample)
endif()
set(HAVE_FFMPEG TRUE)
else()
set(_missing_ffmpeg_libraries "")
foreach (ffmpeg_lib ${_required_ffmpeg_libraries})
if (NOT FFMPEG_${ffmpeg_lib}_FOUND)
list(APPEND _missing_ffmpeg_libraries ${ffmpeg_lib})
endif()
endforeach ()
message(STATUS "FFMPEG is disabled. Required libraries: ${_required_ffmpeg_libraries}."
" Missing libraries: ${_missing_ffmpeg_libraries}")
unset(_missing_ffmpeg_libraries)
endif()
endif()
#=================================
# Versions check.
if(HAVE_FFMPEG AND NOT HAVE_FFMPEG_WRAPPER)
set(_min_libavcodec_version 54.35.0)
set(_min_libavformat_version 54.20.4)
set(_min_libavutil_version 52.3.0)
set(_min_libswscale_version 2.1.1)
set(_min_libavresample_version 1.0.1)
foreach(ffmpeg_lib ${_used_ffmpeg_libraries})
if(FFMPEG_${ffmpeg_lib}_VERSION VERSION_LESS _min_${ffmpeg_lib}_version)
message(STATUS "FFMPEG is disabled. Can't find suitable ${ffmpeg_lib} library"
" (minimal ${_min_${ffmpeg_lib}_version}, found ${FFMPEG_${ffmpeg_lib}_VERSION}).")
set(HAVE_FFMPEG FALSE)
endif()
endforeach()
if(NOT HAVE_FFMPEG)
message(STATUS "FFMPEG libraries version check failed "
"(minimal libav release 9.20, minimal FFMPEG release 1.1.16).")
endif()
unset(_min_libavcodec_version)
unset(_min_libavformat_version)
unset(_min_libavutil_version)
unset(_min_libswscale_version)
unset(_min_libavresample_version)
endif()
#==================================
if(HAVE_FFMPEG AND NOT HAVE_FFMPEG_WRAPPER AND NOT OPENCV_FFMPEG_SKIP_BUILD_CHECK)
try_compile(__VALID_FFMPEG
"${OpenCV_BINARY_DIR}"
"${OpenCV_SOURCE_DIR}/cmake/checks/ffmpeg_test.cpp"
CMAKE_FLAGS "-DINCLUDE_DIRECTORIES:STRING=${FFMPEG_INCLUDE_DIRS}"
"-DLINK_LIBRARIES:STRING=${FFMPEG_LIBRARIES}"
OUTPUT_VARIABLE TRY_OUT
)
if(NOT __VALID_FFMPEG)
# message(FATAL_ERROR "FFMPEG: test check build log:\n${TRY_OUT}")
message(STATUS "WARNING: Can't build ffmpeg test code")
set(HAVE_FFMPEG FALSE)
endif()
endif()
#==================================
unset(_required_ffmpeg_libraries)
unset(_used_ffmpeg_libraries)
if(HAVE_FFMPEG_WRAPPER)
ocv_add_external_target(ffmpeg "" "" "HAVE_FFMPEG_WRAPPER")
elseif(HAVE_FFMPEG)
ocv_add_external_target(ffmpeg "${FFMPEG_INCLUDE_DIRS}" "${FFMPEG_LIBRARIES}" "HAVE_FFMPEG")
set(__builtin_defines "")
set(__builtin_include_dirs "")
set(__builtin_libs "")
set(__plugin_defines "")
set(__plugin_include_dirs "")
set(__plugin_libs "")
if(HAVE_OPENCL)
set(__opencl_dirs "")
if(OPENCL_INCLUDE_DIRS)
set(__opencl_dirs "${OPENCL_INCLUDE_DIRS}")
elseif(OPENCL_INCLUDE_DIR)
set(__opencl_dirs "${OPENCL_INCLUDE_DIR}")
else()
set(__opencl_dirs "${OpenCV_SOURCE_DIR}/3rdparty/include/opencl/1.2")
endif()
# extra dependencies for buildin code (OpenCL dir is required for extensions like cl_d3d11.h)
# buildin HAVE_OPENCL is already defined through cvconfig.h
list(APPEND __builtin_include_dirs "${__opencl_dirs}")
# extra dependencies for
list(APPEND __plugin_defines "HAVE_OPENCL")
list(APPEND __plugin_include_dirs "${__opencl_dirs}")
endif()
# TODO: libva, d3d11
if(__builtin_include_dirs OR __builtin_include_defines OR __builtin_include_libs)
ocv_add_external_target(ffmpeg.builtin_deps "${__builtin_include_dirs}" "${__builtin_include_libs}" "${__builtin_defines}")
endif()
if(VIDEOIO_ENABLE_PLUGINS AND __plugin_include_dirs OR __plugin_include_defines OR __plugin_include_libs)
ocv_add_external_target(ffmpeg.plugin_deps "${__plugin_include_dirs}" "${__plugin_include_libs}" "${__plugin_defines}")
endif()
endif()