project(${JPEG_LIBRARY} C)

ocv_warnings_disable(CMAKE_C_FLAGS -Wunused-parameter -Wsign-compare -Wshorten-64-to-32 -Wimplicit-fallthrough)

set(VERSION_MAJOR 2)
set(VERSION_MINOR 0)
set(VERSION_REVISION 2)
set(VERSION ${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_REVISION})
set(LIBJPEG_TURBO_VERSION_NUMBER 2000002)

string(TIMESTAMP BUILD "opencv-${OPENCV_VERSION}-libjpeg-turbo")
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
  set(BUILD "${BUILD}-debug")
endif()

message(STATUS "libjpeg-turbo: VERSION = ${VERSION}, BUILD = ${BUILD}")

option(WITH_ARITH_ENC "Include arithmetic encoding support when emulating the libjpeg v6b API/ABI" TRUE)
option(WITH_ARITH_DEC "Include arithmetic decoding support when emulating the libjpeg v6b API/ABI" TRUE)

include(CheckCSourceCompiles)
include(CheckIncludeFiles)
include(CheckTypeSize)

check_type_size("size_t" SIZEOF_SIZE_T)
check_type_size("unsigned long" SIZEOF_UNSIGNED_LONG)

if(SIZEOF_SIZE_T EQUAL SIZEOF_UNSIGNED_LONG)
  check_c_source_compiles("int main(int argc, char **argv) { unsigned long a = argc;  return __builtin_ctzl(a); }"
    HAVE_BUILTIN_CTZL)
endif()
if(MSVC)
  check_include_files("intrin.h" HAVE_INTRIN_H)
endif()

if(UNIX)
  # Check for headers
  check_include_files(locale.h HAVE_LOCALE_H)
  check_include_files(stddef.h HAVE_STDDEF_H)
  check_include_files(stdlib.h HAVE_STDLIB_H)
  check_include_files(sys/types.h NEED_SYS_TYPES_H)

  # Other predefines
  # undef NEED_BSD_STRINGS
  ocv_update(HAVE_UNSIGNED_CHAR 1)
  ocv_update(HAVE_UNSIGNED_SHORT 1)
  # undef INCOMPLETE_TYPES_BROKEN
  ocv_update(RIGHT_SHIFT_IS_UNSIGNED 0)
  ocv_update(__CHAR_UNSIGNED__ 0)
endif()


set(BITS_IN_JSAMPLE 8)

if(WITH_ARITH_ENC)
  set(C_ARITH_CODING_SUPPORTED 1)
endif()

if(WITH_ARITH_DEC)
  set(D_ARITH_CODING_SUPPORTED 1)
endif()

set(JPEG_LIB_VERSION 62)

# OpenCV
set(JPEG_LIB_VERSION "${VERSION}-${JPEG_LIB_VERSION}" PARENT_SCOPE)

if(MSVC)
  add_definitions(-W3 -wd4996 -wd4018)
endif()

if(WIN32)
  configure_file(jconfig.h.win.in jconfig.h)
else()
  configure_file(jconfig.h.in jconfig.h)
endif()
configure_file(jconfigint.h.in jconfigint.h)

include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/src)

set(JPEG_SOURCES jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c
  jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c jcphuff.c
  jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c jdatadst.c jdatasrc.c
  jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c
  jdmaster.c jdmerge.c jdphuff.c jdpostct.c jdsample.c jdtrans.c jerror.c
  jfdctflt.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c
  jquant1.c jquant2.c jutils.c jmemmgr.c jmemnobs.c)

if(WITH_ARITH_ENC OR WITH_ARITH_DEC)
  set(JPEG_SOURCES ${JPEG_SOURCES} jaricom.c)
endif()

if(WITH_ARITH_ENC)
  set(JPEG_SOURCES ${JPEG_SOURCES} jcarith.c)
endif()

if(WITH_ARITH_DEC)
  set(JPEG_SOURCES ${JPEG_SOURCES} jdarith.c)
endif()

# No SIMD
set(JPEG_SOURCES ${JPEG_SOURCES} jsimd_none.c)

ocv_list_add_prefix(JPEG_SOURCES src/)

add_library(${JPEG_LIBRARY} STATIC ${JPEG_SOURCES} ${SIMD_OBJS})

set_target_properties(${JPEG_LIBRARY}
  PROPERTIES OUTPUT_NAME ${JPEG_LIBRARY}
  DEBUG_POSTFIX "${OPENCV_DEBUG_POSTFIX}"
  COMPILE_PDB_NAME ${JPEG_LIBRARY}
  COMPILE_PDB_NAME_DEBUG "${JPEG_LIBRARY}${OPENCV_DEBUG_POSTFIX}"
  ARCHIVE_OUTPUT_DIRECTORY ${3P_LIBRARY_OUTPUT_PATH}
  )

if(ENABLE_SOLUTION_FOLDERS)
  set_target_properties(${JPEG_LIBRARY} PROPERTIES FOLDER "3rdparty")
endif()

if(NOT BUILD_SHARED_LIBS)
  ocv_install_target(${JPEG_LIBRARY} EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev)
endif()

ocv_install_3rdparty_licenses(libjpeg-turbo README.md LICENSE.md README.ijg)